EV charging technology

As we strive to achieve our climate goals, the transportation sector has undergone significant transformations. Public charging stations, including DC fast chargers and regular EV charging stations, play a critical role in the sustainable development of green transportation, whether for private passenger vehicles or commercial fleets. According to past statistics, the number of global electric vehicle charging points increased by 65% in 2023, and this growth trend continues.   Workersbee, a global leading EV charging plug solution provider, is dedicated to developing cutting-edge charging technologies to meet the personalized charging needs of customers. In this article, we will explore the differences between Direct Current (DC) high-power fast chargers and regular electric vehicle (EV) charging stations, and how Workersbee's innovative products can meet your business needs. Regular EV charging stations refer to chargers that provide Alternating Current (AC) to electric vehicles, which is then converted to Direct Current (DC) by the vehicle's onboard charger. In North America, these are often referred to as Level 1 and Level 2 chargers, and they have a wide range of usage scenarios. Level 1 chargers use a standard 120V household outlet, providing very slow charging speeds. Level 2 chargers require a 240V power source, offering shorter charging times.   In workplaces, malls, and urban centers, Level 2 chargers are more common, providing faster and more cost-effective charging solutions.   Workersbee’s AC charging plugs are designed to be user-friendly, efficient, and reliable, compatible with over 99% of electric vehicles on the market, ensuring that EVs are always ready for use.   In the European market, the BYO chargers, which require drivers to carry an EV charging cable to connect to the chargers, are widely used. Workersbee's latest EV Charging Cable 2.3 is highly praised in Europe for its sleek appearance, dual protection features, and thoughtful design details.   DC fast charging stations feature high-power DC chargers that directly provide DC to the vehicle's battery, bypassing the onboard charger and requiring significantly less charging time. Popular examples include Tesla Superchargers, which can add 200 miles of range in just 15 minutes.   DC fast charging stations are typically located in large public charging areas and along highway corridors, making them ideal for EV drivers who need quick charging during long-distance travel. Workersbee’s high-power DC plugs boast robust natural or liquid cooling technologies, ensuring lightweight cables while continuously optimizing cable design and liquid cooling structures to achieve higher and more stable charging efficiency. These products undergo rigorous safety certifications and tests, ensuring reliability and service life.   Choosing Between Regular EV Charging Stations and DC Fast Charging Stations 1. Power Supply: Regular EV charging stations use AC from the grid, which the vehicle’s onboard charger converts to DC for the battery. DC fast chargers convert AC to high-power DC within the charger and directly provide it to the battery.   2. Charging Speed: Level 1 chargers provide only 1.9 kW of power, making them suitable for overnight home charging due to their slow speed. Level 2 chargers offer up to 19.2 kW of power, allowing for a full charge in a few hours. DC fast chargers can typically charge an EV to 80% in just 30 minutes, with newer models being even faster.   3. Application Scenarios: Residential Areas: Installing Level 2 chargers in apartments, streets, or private garages allows residents to charge overnight, ensuring full battery every morning. Workplaces: Level 2 chargers are cost-effective for employees to charge during office hours, promoting the shift to electric vehicles. Shopping Malls/Retail Stores: Mostly provide Level 2 chargers with a few DC fast chargers as a supplement, catering to both long-stay and quick-charge needs at the same time. Highways: Primarily equipped with DC fast chargers for quick and convenient charging for long-distance travelers. Commercial Fleets: Fleet operators install DC fast chargers at central hubs to keep fleets operational with minimal downtime.   4. Installation and Maintenance Costs Financial Cost: DC fast chargers are more expensive due to higher power requirements and complex technology. Installation Complexity: DC fast chargers require extensive power infrastructure and high site power requirements, often necessitating significant upgrades and advanced wiring. Maintenance Costs: The cables and plugs used in regular and DC charging stations differ greatly. Replacing worn components in DC chargers is more costly, with higher daily maintenance costs. Regulatory Approval: Low-power AC charging requires simple licensing, while DC fast charger installation needs specific approvals and regulatory permits, adding to the cost.   5.Charging Fees: Due to lower installation and maintenance costs and lower power requirements, the charging fees for regular chargers are much less compared to the higher investment required for DC fast chargers.   Workersbee's Business Advantages 1. Over a decade of experience in EV charging plug research and production, with solid production capabilities, extensive experience, and professional teams. 2. Leading-edge technology driven by substantial R&D investment, continuously expanding product range, and improving user experience. 3. Commitment to high-quality products. Each batch has been rigorously tested and is very reliable in terms of performance, safety, protection, and experience. 4. Products certified by industry authorities, ensuring compliance with stringent safety and performance standards, such as CE, UKCA, UL, TUV, etc. 5. Customized charging solutions with comprehensive after-sales service to support smooth business operations.   Conclusion Understanding the differences between regular EV charging stations and DC fast chargers is crucial for those looking to invest in the EV charging industry. While DC fast chargers require larger investments but offer faster charging speeds, regular chargers are less expensive and suitable for long-duration parking.   Workersbee is committed to providing high-quality, reliable chargers to meet the needs of individual drivers and commercial fleet operators.   We invite you to explore our extensive product offerings and unlock exclusive charging solutions to help your business STAY POWER.  

Since Tesla announced the global release of its charging connector design in 2022, charging standards have remained a hot topic in the electric vehicle industry. It has been over half a year since Tesla's North American Charging Standard (NACS) was officially defined by SAE as NACS J3400, yet the current charging standard landscape in Europe and America still exhibits a state of confusion.   Unlike the unified interface for fuel vehicles (meaning a shape standard form), there are multiple charging standards for electric vehicles globally. In North America alone, there are NACS and CCS (Combined Charging System). With the opening of Tesla's charging network, competition between the two has intensified.   Understanding and adhering to the correct charging standard that matches one's car is crucial for successful charging. As a global leading EV charging plug solution provider, Workersbee is dedicated to offering high-performance products that meet the ever-changing market demands. In this article, we will explore the main differences between these two charging standards, the technological advancements they bring, and how Workersbee's NACS plug is designed to meet the growing needs of the electric vehicle industry.   About NACS The North American Charging Standard (NACS) was originally a proprietary charging connector for Tesla, designed to meet the AC and fast DC charging needs of Tesla vehicles. However, following Tesla's announcement to open its design to the market and supercharger network to non-Tesla owners, NACS's market presence is gradually expanding. Tesla's charging connector design has also quickly permeated other electric vehicle manufacturers.   The design of the NACS charging plug is sleek and compact, making it stylish and lightweight, and its efficient charging performance is highly praised by car owners. A single connector can handle both AC and DC charging. It not only offers a user-friendly experience, simplifying the charging process, but for charger and EV manufacturers, it also means more streamlined designs for charging ports, facilitating an easier and more efficient connection between the car and charger.   Additionally, thanks to the widespread presence of Tesla's Supercharger network, NACS holds the highest market share in North America. This allows Tesla owners and non-Tesla owners with adapter connectors to efficiently charge anytime.   About CCS The Combined Charging System (CCS) is a widely adopted universal charging standard worldwide, especially supported by charging networks and electric vehicle manufacturers in Europe and America. It includes CCS1 mainly used in North America and CCS2 primarily used in Europe.   CCS requires different pins for AC and DC charging, so for charger and car manufacturers, AC and DC charging require different charging ports, offering greater flexibility. CCS is the standard in Europe and also has a significant user base in the United States. Its high compatibility across different brands and models meets diverse electric vehicle charging needs.   Comprehensive Comparison l Connector Design: The NACS connector features an integrated ultra-thin packaging design without any moving parts, supporting AC charging and DC charging up to one megawatt. The CCS connector, on the other hand, requires different pins for AC and DC charging, resulting in a larger size. The dimensions of the NACS connector are only half of that of the CCS connector, naturally making it much lighter. l Compatibility: For Tesla owners, the NACS plug provides a seamless charging experience, allowing them to fully enjoy the convenience and power of the Supercharger network. The CCS plug, due to its more flexible multifunctional design, is widely adopted by other electric vehicle manufacturers. l Charging Power: Both support high-power DC fast charging. Tesla's Supercharger network peaks at 250kW currently, but its connector can support DC charging up to one megawatt, offering strong scalability. Currently, many public fast chargers using CCS have reached 350kW. l User Experience: In North America, NACS significantly improves drivers' accessibility due to its far greater number of chargers compared to CCS. Moreover, thanks to excellent operational maintenance and high-performance charging equipment, its reliability surpasses that of CCS. Additionally, the lighter and more compact NACS plug is widely praised and loved. l Market Adoption: The NACS plug is primarily used in North America, while CCS dominates the European market. In Europe and China, Tesla cars adopt the local mainstream charging standards CCS and GB/T.   Workersbee's NACS Plug   Workersbee always stays at the forefront of industry innovation. Since Tesla announced the opening of its connector design, our market strategy experts quickly sensed market demand, prompting our R&D team to start the NACS project.   Our NACS plug comes in both AC and DC versions, strictly developed and produced according to SAEJ3400 and IATF16949, meeting UL certification standards.   The AC plug ranges from 16A to 80A, and the DC plug has a rated current of up to 350A. To ensure charging safety and stability, intelligent temperature control is used to monitor contact temperature in real-time to prevent overheating. Additionally, ultrasonic terminal welding technology is employed to reduce contact resistance close to zero.   Furthermore, to manage high-power fast charging of the NACS DC plug, natural cooling technology is applied to effectively control temperature rise. This ensures a safe, continuous, stable output of high current and extends the lifespan of the plug.   Why Choose Workersbee NACS Plug 1. Innovative Products: We continuously develop new products to meet the ever-changing demands of the EV charging market, ensuring your business stays ahead of competitors with more flexible market responses. 2. Reliable Performance: Quality is the core of all products; Workersbee's strict production processes guarantee high product consistency, further tested through multiple professional and safety rounds to ensure high performance, durability, and reliability. 3. Strong Production Capabilities: With 17 years of professional production experience, our new factory boasts more advanced automated production lines and larger manufacturing space. 4. Peace of Mind After-Sales Service: Collaborating with us is not just about product procurement but also access to nearly a hundred professional technicians. We provide customized solutions for your business and professional assistance when needed.   Market Insight Recent news suggests that Tesla may not have fulfilled its promise to open its Supercharger network to non-Tesla users. Hence, the widespread adoption of NACS seems not as smooth as expected.   For a considerable time in North America, both major plugs might coexist, while in Europe, CCS's high compatibility will likely remain the dominant standard.   As for the competition between the two charging standards, it continues, and market differentiation has not become very clear. Amidst the pursuit of interests by various stakeholders, the future landscape of the EV charging market still seems shrouded in mist.   Conclusion As the market penetration rate of EVs gradually increases, competition among future electric vehicle charging plug standards will intensify. Both NACS and CCS have significant advantages, and the wise choice depends on the market region, electric vehicle brand, type, and charging requirements.   We sincerely invite your team to explore our innovative products and understand how we provide reliable power for future transportation. Whether you need NACS or CCS plugs, Workersbee will be your trustworthy partner.

The continuous rise in global temperatures has made reducing carbon emissions an urgent priority. As the second-largest source of carbon emissions, the green electrification wave has swept through the global transportation industry. Beyond the daily passenger cars of residents, light-duty fleets and heavy-duty fleets account for a larger proportion of carbon emissions.   Currently, the market penetration of EV Fleets faces significant challenges. However, from a long-term sustainable development perspective, transitioning to electric commercial fleets is a strategic necessity.   Due to their profitability, mission attributes, and organizational operations, the primary reason is that EV fleets face more significant concerns than private passenger cars. At the forefront is range anxiety. Factors such as the timeliness of transportation tasks, long-distance transport, and the large capacity batteries of electric commercial vehicles make range anxiety a major obstacle in the shift to electric vehicles for commercial fleets.   Having cost-effective and efficient solutions and EV charging infrastructure to address this concern is a tremendous encouragement for fleet managers and operators. In the long run, it benefits the environment and effectively controls fleet operating costs, which is highly attractive for fleet development.   Where does range anxiety come from? Because batteries power electric vehicles and the battery power entirely determines their range. Therefore, the anxiety and pressure caused by when trying to adopt or use EVs due to the worry or fear that the electric vehicle does not have enough power to support it to reach its destination or a reliable charging station is called range anxiety. It is particularly obvious when long-distance travel is required.   However, unlike the flexibility of private passenger cars in route planning, for commercial fleets, fleet managers must ensure delivery time and efficient operation of the entire fleet. Therefore, the challenges brought by commercial fleets' range anxiety will be more, mainly reflected in the following aspects: · Ensuring the scheduled delivery times and reducing the risk of financial compensation. · Optimizing transportation route planning before executing tasks. · Ensuring fleet operational efficiency, reducing the possibility of operational interruptions, lowering operating costs, and increasing profits. · Reducing the risk of running out of power during service to avoid missing deliveries and lowering customer satisfaction. Portable EV chargers are flexible, compact, and convenient mobile electric vehicle chargers that do not require installation. Unlike fixed chargers or charging stations, portable EV chargers can be simply plugged into a power outlet to transfer energy to the electric vehicle. In other words, as long as there is a compliant power source, charging can be done anytime and anywhere. They typically include a power plug, control box, charging cable, and a charging connector compatible with them.   How can portable EV chargers support commercial fleets? · Flexibility and Convenience:  Portable EV chargers usually have a user-friendly interface or can connect to mobile apps, and some can even achieve Plug&Charge functionality. For commercial fleets that may face complex situations, they are very easy to operate and can charge vehicles promptly. · In emergencies: Such as unexpected power depletion or unplanned route changes, portable EV chargers can serve as a backup charging method. · In remote areas lacking charging facilities: Portable EV chargers can increase range timely, ensuring the fleet meets scheduled delivery times. · Providing solutions anytime, anywhere: Portable EV chargers provide the necessary conditions for vehicles to charge during temporary stops. The flexible solution increases the possibilities for route planning, improving operational efficiency. · Benefits for fleet operations: With charging capability always available, driver range anxiety is reduced, enhancing service responsiveness and smoother fleet management.   As a professional R&D and manufacturing technology company with over ten years of experience in EVSE manufacturing, Workersbee offers a variety of portable EV chargers designed to meet the different needs of commercial fleets. From product design and development to manufacturing and production, from testing and certification to global localized services, we adhere to innovation, breakthrough, efficiency, and reliability to ensure that we provide customers with the best charging solutions.   Workersbee's range of portable EV chargers includes the FLEX CHARGER series, ePort series, Soapbox series, and the newly launched DuraCharger series. We are very confident that we can provide the following benefits to commercial fleets: 1. High-Efficiency Charging: Various high-power options are available, enabling fast energy transfer, effectively increasing fleet vehicle service time, and reducing downtime. 2. Enhanced Safety: Adherence to safety standards, with chargers featuring multiple safety measures such as real-time monitoring, overheating protection, and overvoltage and overcurrent protection, reducing accident risks. 3. Flexible Operation: With a portable EV charger in the vehicle, the fleet can charge vehicles anytime, anywhere, maintaining high operational efficiency. 4. Cost-Effectiveness: Eliminates excessive investment in charging infrastructure, significantly reducing installation and maintenance costs without sacrificing operational efficiency. 5. Customized Professional Charging Solutions: Our charging experts can provide targeted, efficient, and sustainable charging solutions based on your business characteristics (e.g., daily mileage tasks, service area characteristics, existing charging infrastructure) and other needs.   Conclusion Portable EV chargers play a crucial role in alleviating range anxiety for commercial fleets. They allow for more flexible and convenient fleet operations, reducing dependence on fixed chargers and enabling vehicles to charge in different situations and locations. This effectively enhances fleet reliability and operational efficiency, leading to smoother, more efficient operations, higher customer satisfaction, and greater profits.   Workersbee is committed to providing cutting-edge charging solutions that meet the evolving needs of commercial fleets. We sincerely invite fleet operators and managers to explore the advantages of our portable EV chargers and look forward to integrating them into your fleet operations, helping you experience efficient and flexible fleet management while eliminating range anxiety.   Contact us immediately at info@workersbee.com to learn how our portable EV chargers can transform your fleet operations and enhance overall efficiency.

In the evolving electric vehicle (EV) industry, advancements in charging technology are crucial to support faster, more efficient, and safer charging experiences. Liquid-cooled EV charging cables and connectors represent a vital leap forward, especially for high-power applications where traditional air-cooling methods cannot manage the heat generated. This article explores the technical principles, classifications, benefits, and testing requirements of liquid-cooled EV charging solutions, with insights from Workersbee’s expertise.   1. Understanding Liquid-Cooled EV Charging Technology   The primary advantage of liquid-cooled EV charging cables lies in their ability to maintain a stable temperature. A coolant circulates within the cable, dissipating the heat generated during high-power charging sessions. This approach enables the EV connectors and cables to handle greater current loads, crucial for modern fast-charging demands.   Key Coolants: Liquid-cooled cables typically use two main types of coolants:    - **Water-Glycol Solutions:** These have a high specific heat capacity and a limited operational range (-30°C to 50°C). The solution circulates through the cable, transferring heat away from the conductors via thermally conductive materials.    - **Degradable Oil Options:** Options like Shell E4 and FUCHS 8025 provide good electrical insulation and interact directly with conductors without degrading rapidly, ensuring a long service life.   2. Classifications of Liquid-Cooled EV Connectors   Workersbee's product line includes liquid-cooled solutions for different standards to meet the demands of various global markets:    - **GB/T Standard**: Commonly used in China, with a focus on DC-only charging and electronic lock mechanisms.    - **CCS2 Standard**: Widely adopted in Europe, this standard incorporates both AC and DC charging interfaces, catering to the diverse charging needs of European users.    - **NACS (Tesla)**: Tesla's proprietary standard that combines AC and DC functionality in a single connector design, optimizing charging for Tesla vehicles.   Each standard is engineered to handle the unique demands and regulatory requirements of its respective regions, ensuring compatibility and safety across diverse EV infrastructures.   3. Types of Liquid-Cooled Cable Structures   The design and effectiveness of a liquid-cooled EV charging cable hinge on its internal structure, which influences heat dissipation and mechanical resilience:   - **Immersed Structure**: In this design, the coolant directly contacts the copper conductor, enhancing cooling efficiency. However, the low-pressure requirements and larger tube sizes can limit flexibility. - **Non-Immersed Structure**: Workersbee has opted for this structure, where the cooling tube is surrounded by copper wires. This design balances flexibility with safety, as coolant leaks are minimized and insulation is improved.   The non-immersed structure is especially advantageous for high-frequency use, as it provides robust mechanical resilience while maintaining optimal cooling efficiency.   4. Workersbee’s Innovations and Advantages   Workersbee’s liquid-cooled EV cables stand out due to several key engineering improvements:      - **Enhanced Cooling Tube Design**: The cables incorporate smaller 4.5/6mm cooling tubes, achieving a lower overall cable diameter and making the cables lighter and more flexible for easier handling.    - **Durability and Flexibility**: The cables have been tested to withstand significant physical stress, including a vehicle running over the cable, without compromising performance.    - **Advanced Coolants**: Workersbee's use of degradable oils ensures compatibility with regulatory standards, addressing environmental concerns and extending the lifespan of the cables.    - **High Safety Standards**: Workersbee minimizes risks associated with coolant leaks or conductivity issues by employing non-immersed structures and careful material selection.   5. Key Components of Liquid-Cooled EV Charging Cables   Liquid-Cooling Tubes Workersbee’s cables use durable, high-performance materials like PTFE and FEP for cooling tubes. These materials withstand high temperatures and provide strong insulation, ensuring consistent cooling performance across various environmental conditions.   Connectors The connectors used in liquid-cooled EV charging cables are crucial for a seamless charging experience. Workersbee utilizes quick-twist, quick-plug, and pagoda connectors that facilitate efficient coolant flow and self-sealing to prevent leaks during charging.   Sealing Systems To prevent coolant leakage, the cables include high-performance sealing systems, ensuring that components like the plug, socket, and internal tubing remain airtight under high pressure. These systems are tested rigorously tomeet IP67 standards, which guarantee robust protection against environmental elements and operational wear.   6. Rigorous Testing for Reliability and Safety   For any liquid-cooled EV charging product, quality testing is crucial to ensure long-term reliability and safety. Workersbee conducts several tests to meet high-performance standards:   - **Temperature Rise Test**: This test measures how effectively the cable dissipates heat during charging. Workersbee’s cables consistently maintain a temperature rise below 50K, even during high-current charging. - **Sealing Performance Tests**: Leakage can compromise cable safety, so Workersbee conducts multiple sealing tests, including airtightness and high-temperature operation tests, to ensure no coolant escapes during operation. - **Short-Term Failure Simulation**: In this test, the coolant flow is temporarily stopped to simulate system failure. This ensures the cable assembly’s safety features are robust enough to prevent overheating in case of sudden coolant loss. - **Mechanical Durability Tests**: Bending and compression tests are performed to assess the cable’s resilience to physical stress, simulating real-world scenarios where cables may be frequently bent or run over by vehicles.     7. Benefits of Liquid-Cooled Charging Technology   Adopting liquid-cooled charging technology brings significant advantages for both charging station operators and end-users:        - **Higher Charging Power**: Liquid-cooled cables support charging currents up to 600A, enabling faster charging sessions without overheating.    - **Cost-Effective Design**: The efficient heat dissipation allows for smaller conductor size, reducing material costs and making the cables easier to handle.    - **Enhanced User Experience**: The compact design and lightweight materials improve maneuverability, allowing users to plug and unplug with minimal effort.    - **Long-Term Durability**: With degradable coolant options and resilient material choices, liquid-cooled cables offer an extended operational lifespan, reducing replacement costs for station operators.   8. Workersbee’s Commitment to Future-Proof Solutions   Workersbee is dedicated to driving innovation in EV charging solutions. By offering liquid-cooled cables that meet or exceed global standards like GB/T and CCS2, Workersbee ensures that its products are compatible with current and future EV models. As the EV industry continues to grow, the demand for rapid, high-power charging solutions will rise, and liquid-cooled technology is set to be a cornerstone of next-generation EV infrastructure.   Conclusion: A Transformative Approach to EV Charging   Liquid-cooled EV charging cables are essential in enabling the transition to high-power charging solutions that meet the needs of today’s EV users. Workersbee's dedication to quality, safety, and performance in liquid-cooled technology ensures reliable, high-efficiency charging that benefits operators and users alike. By investing in liquid-cooled solutions, charging networks can support faster, more powerful charging, ensuring a seamless transition to the future of sustainable mobility.  

As the number of electric vehicles on the road continues to increase, the demand for EV Charging Infrastructure has also reached an unprecedented level. Low-power slow chargers take a long time to fully charge EVs, limiting the charging experience for vehicle owners, especially for drivers who need to travel long distances. High-power chargers significantly improve charging efficiency, reduce charging time, and enhance the market competitiveness of electric vehicles for long journeys. However, the high heat generated by high-power charging cannot be ignored, as it not only affects charging efficiency but also relates to Electrical Safety. Efficient Liquid Cooling technology has emerged as a solution.   This article will briefly discuss how liquid cooling technology serves high-power charging for EVs, the classification of liquid-cooled charging connectors, and the benefits for businesses.   What is Liquid Cooling? We know that conductors all have resistance and will generate heat due to the thermal effect of current. Under a 250A current, the temperature rise of an ordinary 80 square DC charging plug is about 40K.   As the charging current increases, the heat generated by the current also becomes more significant. To keep charging safe, we must ensure that the temperature of the charging connector terminals and cables is within an appropriate range.   Although increasing the conductor cross-sectional area can solve this problem, it will also increase the weight of the cable and make it more difficult to operate. However, using liquid-cooled high-power charging technology, the Cooling Efficiency is higher, and the weight of the charging cable is lighter.   Liquid-cooled charging uses a liquid cooling medium to circulate under the propulsion of a power pump, carrying away the heat generated by the cable and charging connector, and reducing the temperature at the hot components, allowing the charging plug to withstand a larger current.   The cooling medium is divided into oil cooling and water cooling. Oil cooling is usually immersion cooling, with the medium being dimethyl silicone oil or E4 CCF, which have very high heat exchange efficiency. The water cooling medium is water plus ethylene glycol solution, although the cooling effect is limited due to the physical properties of water, it is more environmentally friendly and degradable.   The commonly mentioned liquid cooling system consists of pumps, fans, oil tanks, and connecting pipes, a compact system with high cooling capacity. It can be divided into automatic control and non-automatic control liquid cooling systems, depending on whether the charger needs to control the operation power of the pump and fan.   Liquid Cooled Charging Connectors According to the standards they meet, liquid-cooled charging connectors can be divided into CCS2/CCS1/NACS (TESLA DC)/GB/T/CHAOJI liquid-cooled charging connectors, which are used in corresponding standard DC Fast Chargers. The CCS2 is a combined AC and DC charging interface, with the standard referring to IEC 62196. It applies to Europe and most regions. The upper part is the AC interface, the lower part is the DC charging interface, and there are no electronic locks or hooks.   The CCS1 is also a combined AC and DC charging interface, with the standard referring to SAE J1772. It applies to the United States and countries such as Japan and South Korea. The upper part is AC and the lower part is DC interface, without electronic locks and with hooks.   NACS is the new charging interface announced by Tesla, and its current standard is defined as SAE J3400. It uses a shared AC and DC interface, without electronic locks and hooks.   The GB/T charging connector is based on Version2015 of the DC charging plug to develop the liquid-cooled plug, with the electronic lock on the charging connector and with hooks.   CHAOJI is a new standard jointly developed by China, Japan, Germany, and other countries, without electronic locks and hooks.   As a leading global professional charging plug solution provider, Workersbee’s CCS1 and CCS2 charging plugs adopt an integrated design, simple generous, and easy to handle. At the same time, they are compatible with natural cooling and liquid cooling.   The charging peak of the CCS2 liquid-cooled charging plug can reach 700A, with a rated current of 500A. With its safe and reliable performance, it has passed CE and TUV certifications and has always been a trusted partner of customers. For high-frequency use plug terminals, from the perspective of maintenance costs of business partners, the terminal quick change design is applied to avoid the high cost of replacing the whole piece. This technology has also received positive feedback from the market.   How Does Liquid Cooling Help High Power Charging? Liquid cooling technology plays a crucial role in High-power Charging. Uses liquid to absorb and transfer heat, achieving efficient heat dissipation, ensuring that charging equipment can maintain an appropriate and stable temperature range during high power operation, thereby safety and reliability of the charging process.   The power pump promotes the circulation of the cooling liquid, which carries away a large amount of heat, significantly improving the current transmission efficiency of the charging cable and reducing the risk of cable damage due to overheating.   Since the liquid cooling technology can effectively reduce the temperature of the charging system, it allows for higher charging currents and voltages, achieving faster charging speeds and improving charging efficiency. It ensures the system's stable operation and extends the service life of the equipment.   Benefits of Liquid Cooling Technology for Businesses 1. Enhance heat dissipation efficiency and performance of equipment to ensure stable and efficient charging. 2. The efficient liquid cooling mechanism can further save energy and improve work efficiency. 3. Charging station design can be more flexible, and better adapted to specific environmental, space, and electrical needs. 4. Liquid cooling can significantly enhance the stability and service life of equipment, effectively reducing maintenance costs and providing cost benefits. 5. Compared to chargers that rely solely on high-power fans for heat dissipation, liquid cooling technology has lower noise, resulting in a better customer experience.   Advantages Provided by Workersbee for Businesses - Comprehensive customized liquid cooling charging solutions. - Experienced quick-change terminal technology to reduce operational and maintenance costs. - Over a decade of professional R&D and production experience, and years of brand reputation for overseas markets. A complete product testing system and multiple authoritative certifications.   Conclusion Supercharging has improved the practicality and market competitiveness of EVs, while liquid cooling technology ensures the safety and stability of high-power charging. In the future, as the electric vehicle market continues to expand and technology advances, high-power charging and liquid cooling technology will play an even more significant role, jointly promoting the healthy development of the EV industry. As a global leading charging plug solution provider fortunate to participate in the reform, Workersbee eagerly anticipates providing strong support to all business partners committed to creating a sustainable transportation future. This includes offering more reliable products, cutting-edge technology, and more attentive after-sales service, jointly promoting the healthy development of the electric vehicle industry.  

In the previous article, we discussed the importance of liquid cooling technology for DC Fast Charging, which enables electric vehicles to achieve excellent charging experiences. This includes enhancing the charging power limit of High-power charger (HPC), achieving more efficient, energy-saving, and reliable charging.     Why Liquid Cooling Matters in DC Fast Charging   As EV adoption accelerates, the demand for ultra-fast, efficient, and safe charging solutions grows rapidly. Liquid cooling technology has become a critical enabler in High Power Charging (HPC), allowing systems to safely deliver 500A and beyond without overheating.   Previously, we explored the role of liquid cooling in enhancing thermal management. In this article, we'll take a closer look at the core components of liquid-cooled EV charging systems, and how Workersbee's 500A liquid-cooled CCS2 charging cables offer a competitive edge for your EV charging infrastructure.   What Is a Liquid-Cooled EV Charging Plug?   A liquid-cooled EV charging plug is engineered to manage the extreme heat generated during high-current DC charging. It consists of several essential components:   ·Coupling Part ·Enclosure ·Liquid Cooling Assembly ·Terminal Pin ·Sealing System ·Cable Clip   Spotlight: The Liquid Cooling Assembly   The core of the plug’s thermal regulation lies in the liquid cooling module, which actively disperses heat from critical contact points during high-power charging. During high-current charging, the terminal pins heat up more than the cable conductors, due to contact resistance. To mitigate this, a cooling structure is built around the pins, enabling forced liquid cooling using a circulating coolant.   The assembly is designed for:   ·Simple and efficient structure ·Easy manufacturing ·Excellent temperature rise control   Its structure typically includes:   ·Dual-sided coolant inlets/outlets (using smooth “pagoda-style” joints) ·Thermal conductive material (for heat transfer without direct coolant-metal contact) ·Fixing nuts, seals, and mounting screws   This design ensures effective cooling while maintaining electrical insulation and operational safety.     Inside the Liquid-Cooled Cable: Structure & Design Highlights   Unlike standard DC charging cables, liquid-cooled EV charging cables integrate a coolant channel within the cable itself. Here's how it works:   ·A liquid cooling tube runs through the center, carrying coolant ·The conductor wraps around the tube ·An insulated outer layer protects the system   This integrated design determines the internal layout of the plug and the cooling performance of the system.   Key Design Requirements for Public Charging Infrastructure    To ensure long-term performance, the following are essential in cable design:   1. High flexibility – Prevents cable stiffness and enhances usability. 2. Proper outer diameter – Avoids weak thin jackets while staying compact. 3. Low sheath temperature rise – Improves safety and comfort for users. 4. Strong welding – Guarantees a stable electrical connection for the pin-conductor joint.       The Role of the Liquid Cooling Tube   The cooling tube is a critical component, affecting both thermal transfer and coolant flow efficiency. Here's what matters:   ·A narrower internal channel within the cooling tube increases resistance to coolant flow, which can significantly hinder the system’s ability to remove heat effectively.     ·Outer diameter: Must balance strength, flexibility, and lightness. ·Material: Requires good chemical resistance, elasticity, and toughness.   Longer cables may generate more heat and higher resistance, so it's essential to balance cable length vs cooling efficiency.       Liquid Cooling System: How It All Circulates   Beyond the cable and plug, a complete liquid-cooled EV charging system includes:   ·Coolant pump ·Radiator/heat exchanger ·Coolant reservoir (oil tank) ·Connecting pipes     Working Principle   1. Heat generated during charging is absorbed by the coolant. 2. Once the coolant absorbs excess heat from the charging components, it flows into a heat exchanger, where thermal energy is transferred out before the liquid recirculates. 3. The coolant is returned to the reservoir and pumped back into the plug.   Advanced systems include temperature, pressure, and level sensors, enabling automatic operation with smart controls. Chargers typically only need to supply power and start signals.       Why Choose Workersbee's 500A Liquid-Cooled Charging Cable?   Workersbee's 500A CCS2 Liquid-Cooled Charging Cable is designed to deliver reliable high-power charging for demanding public and fleet applications. It has passed CE certification and uses TPU-insulated, user-friendly cables.     Core Advantages   1. Outstanding Performance Tailored cooling tube and cable designs with excellent thermal, chemical, and mechanical properties.   2. Superior User Experience Flexible and easy-to-handle cable enhances usability in public environments.   3. Maximum Safety Temperature rise of the outer jacket is strictly controlled to avoid overheating.   4. Robust Manufacturing High-quality welding of pins and rigorous production control ensure durability and long-term performance.   5. Lower Maintenance Cost Modular terminal quick-change design eliminates full plug replacement, reducing service costs.   6. Flexible Customization Options for cable length, connector type, current rating, and branded logos.   7. Global Compatibility Complies with CCS2 and international standards, ensuring wide interoperability across charging networks.     Ready for the Future of Fast Charging   As the EV market shifts toward ultra-fast public charging, liquid-cooled technology will be the foundation of safe, stable, and scalable infrastructure.   Workersbee's liquid-cooled EV charging solutions are built for the future—with innovation, flexibility, and safety in mind.   Whether you're building a highway supercharging station or upgrading your fleet depot, our 500A liquid-cooled CCS2 cables deliver the power and performance your business needs.     Reach out to the Workersbee team today for product specs, samples, or custom solutions.

In the previous articles, we have fully understood the important role of liquid cooling technology in DC fast charging and become familiar with some key components. Before the liquid-cooled charging cables are truly put into use in Electric vehicle infrastructure, strict and comprehensive testing is critical, as these tests are closely related to the safety and reliability of liquid-cooled charging. In this article, we will briefly introduce some key tests for liquid-cooled charging plugs/cables to help you face high-power EV charging solutions with more confidence. The following tests may be involved to ensure that the liquid-cooled charging equipment maintains stable performance and safety during high-power transmission and long-term operation.   1. Sealing Test This primarily includes Air Tightness Testing, Leakage Testing, and High-temperature Operation Testing, which are particularly important for Eco-friendly EV charging. Air tightness testing aims to detect the sealing performance of the liquid-cooled tubes and connectors and can be used as an equivalent test method to IP67. Compared to the IP67 submersion test, the air tightness test can be conducted without causing damage. Whether the air tightness meets the standard can be judged by the leakage rate. Leakage testing is a type test used to verify the long-term sealing performance of various components and the compatibility of the coolant. The high-temperature operation test is conducted to verify whether the sealing components remain effective at high temperatures.   2. Temperature Rise Test The Temperature Rise Test is a fundamental test for liquid-cooled charging equipment. In the power-on state, the temperature difference between the charging plug, cable, and other components and the ambient temperature is the temperature rise at each test point. This is an important indicator when using High-power chargers. The liquid-cooled plug test requires the collection of the temperature, flow rate, and pressure values of the inlet and outlet liquid cooling tubes. This includes tests when the liquid cooling system is turned on and off, meaning it has two rated current values. The temperature rise under each current is converted into a derating curve of the charging plug to determine the allowable rated current at different ambient temperatures. Additionally, a Short-term Failure Test of the Liquid Cooling System is necessary to simulate the safety performance of the liquid cooling plug when the system suddenly fails. It is required that after the test, there is no damage or leakage in the cable, liquid cooling tube, and other components of the charging plug. The temperature rise test is an important gatekeeper for achieving Efficient energy management.   3. Liquid Cooled Tube Strength Test As a key component of the liquid-cooled cable, the liquid-cooled tube may not only be frequently bent but also bear the pressure of the coolant. Therefore, it is common to measure the structural strength of the cable through a Bending Test to detect any bulges or breaks in the cable after repeated bending. This ensures that the continuity of the conduct wires and the air tightness of the plug and liquid-cooled tube meet the standard requirements. The Burst Pressure Test of the liquid-cooled tube is conducted to evaluate the pressure resistance of the liquid-cooled pipe under high-pressure conditions, ensuring that it does not rupture or leak during actual use, thus guaranteeing the safety and reliability of the charging process.   4. Mechanical Performance Test This may include the Plug Insertion and Extraction Test (insertion and extraction force, insertion and extraction life, etc.), Impact Resistance Test (side strength test, vibration resistance test, etc.), and Cable Tensile Test (tensile strength, etc.). These tests are used to evaluate the reliability of the charging plug in daily use, ensuring that the mechanical structure is sturdy and durable, and capable of adapting to various harsh operating environments.   5. Durability Test In actual use, charging plugs may undergo multiple insertions and extractions, high temperatures, low temperatures, or other harsh conditions. Therefore, it is necessary to test their performance under these conditions to evaluate their service life and reliability. For example, by simulating the wear of long-term use, the lifespan and aging of the charging plug can be detected to ensure that it has sufficient durability. Additionally, salt spray tests and internal corrosion tests can assess the charging plug’s resistance to harsh environments such as moisture and salt corrosion.   6. Compatibility Test Charging plugs need to have broad compatibility to adapt to different vehicle models’ charging inlets and communication protocol requirements. It is necessary to ensure that the charging connector can properly connect to the charger and the electric vehicle and establish communication according to the predetermined charging protocol to initiate charging, guaranteeing widespread applicability in practical use.   7. Electrical Safety Test This includes insulation performance testing, leakage protection testing, overtemperature protection testing, current-voltage load testing, overcurrent, and overvoltage protection testing, as well as tests for protection against water, dust, and moisture. It ensures that the liquid-cooled charging cables can supply power stably under various operating conditions and will not cause dangerous incidents in possible abnormal or extreme situations, thus safeguarding the safety of users and vehicles.   8. User-Friendliness Test This involves simulating the actual usage scenarios of drivers to assess the comfort of the charging process from the user’s perspective. It includes noise testing, insertion, and extraction force testing, as well as the weight, size, flexibility, and ease of operation of the charging connector. The goal is to ensure a barrier-free and pleasant experience for users during the charging process.   Satisfactory Workersbee CCS2 Liquid Cooled DC Cable Temperature Rise Test Performance As a global leading charging plug solution provider, Workersbee’s product development has always been at the forefront of Sustainable charging technology. Our CCS2 liquid-cooled charging plug 2.0 can deliver a stable continuous current output of 500A, with peak output reaching up to 700A. Testing engineers connected the sample to the liquid cooling system and series-connected it to a DC voltage-stabilized power source, testing the current at 500A, 600A, and 700A until the temperature stabilized. A temperature acquisition instrument was used to detect the cable （head, middle, tail）, plug breech DC+, plug breech DC-, temperature sensor DC+, and temperature sensor DC-. The following data was obtained: 1. Test current at 500A, the highest temperature rise after stabilization was at the plug breech DC-: 31K. 2. Test current at 600A, after 34 minutes of testing, the highest temperature rise was at the plug breech DC-: 50.7K. 3. Test current at 700A, after 7 minutes of testing, the highest temperature rise was at the plug breech DC-: 48K.   Choose Workersbee Liquid Cooled Charging Cables for Your Business · Rigorous and comprehensive product testing system · Outstanding charging performance and liquid cooling capabilities · Multiple international authoritative certifications · Customized charging solutions based on your business needs · Complete after-sales service system   Conclusion In addition to routine tests such as the critical sealing test and the basic temperature rise test, the charging plug must undergo many other professional tests related to hardware, software, and user experience before being incorporated into charging facilities. By conducting comprehensive and meticulous professional tests on the EV liquid-cooled charging plug, it is ensured that it maintains stable performance and reliability in high-power and high-current transmission and during prolonged operation. Workersbee is committed to research and development innovation and always adheres to high production quality standards. We look forward to working with you to connect our liquid-cooled charging cables, which have undergone rigorous testing, to your advanced charging network. We aim to provide electric vehicles with a safe, fast, and convenient charging experience, to empower sustainable transportation, and to add vitality to our beloved planet.

The market penetration of electric vehicles has grown so significantly that it can no longer be ignored, accompanied by a huge demand for charging. What troubles the electric vehicle charging industry is not a lack of market, but rather the lack of reliability, complex charging experiences, and unsatisfactory return on investment. To gain more control in the market, we need to start with Electric vehicle infrastructure. AC charging and DC charging are absolutely mainstream. A thorough understanding of their pros and cons and value realization can help us plan and configure the charging network more strategically and embrace electric vehicles more proactively.   First, let's briefly understand the basic concepts of AC and DC charging.  AC Charging uses an alternating current power source to charge an electric vehicle's battery. The AC from the grid is converted to DC by the vehicle’s onboard charger and stored in the battery. This setup means that the efficiency of AC charging is limited not only by the charger but also by the onboard charger（OBC）.    Therefore, AC charging is generally slower. Although some AC chargers are known as "Rapid Charging," they are not in the same league as DC Fast Charging. These faster AC chargers are usually referred to as Level 2 Chargers, while the lower ones are called Level 1 Chargers.    While the Charging Speed of AC charging is slower, the equipment costs are lower, they are easier to install, and the requirements for the surrounding environment and the grid are relatively low. They require minimal electrical upgrades and are easier to maintain and operate. For drivers, the charging cost is also lower. Therefore, AC chargers are well-suited for places where cars are parked for extended periods (more than an hour), such as homes, workplaces, public parking lots, or roadside parking. Since charging usually takes several hours, it is not suitable for long-distance travelers in a hurry.  Common power include 3.5kW, 7kW, 11kW, and 22kW. Some products now offer higher power, but they come with higher costs and electrical requirements.   As a renowned china charging plug manufacturer, Workersbee's AC charging products have always been popular. This includes charging connectors, charging cables, charging sockets, and portable EV chargers.   In particular, portable EV chargers come in a diverse range of products, including those with screens and without, single-phase and three-phase charging products. These products have been extensively validated in the market over the years, boasting very stable reliability, over 99.9% compatibility, user-friendly smart charging management, and outstanding outlook designs. The impressive market performance further confirms their high performance, high standards, and high reliability.    DC Charging uses a High-power charger (HPC) to draw alternating current (AC) from the grid, which is then converted into direct current (DC) by internal inverters and supplied to the EV's battery. Because the power modules handle substantial amounts of energy, DC chargers are typically larger and have higher procurement, installation, and maintenance costs, with greater electrical requirements.  Since DC power can directly supply large amounts of energy to the EV battery, reducing energy conversion losses within the vehicle, DC charging is highly efficient and fast, significantly reducing charging time. These features make DC charging ideal for public charging stations where vehicles have short stays and for highway corridors for long-distance travel, where there is ample space and convenient electrical distribution. Drivers need not worry about long charging times; a quick restroom break or a cup of coffee is usually enough to provide sufficient charge for their journey. But why doesn’t everyone always prefer fast charging? The charging cost is higher.  For charging station operators, the initial investment is substantial, including equipment, electrical upgrades, and site development, along with high ongoing maintenance costs, all of which are passed on to the drivers.  Additionally, frequent use of fast charging may potentially degrade the vehicle’s battery life time. Furthermore, some vehicles might not support fast charging despite the desire for high efficiency.   Consumers still look forward to safe and stable high-power fast charging in the future. Workersbee's STAR product, the CCS2 liquid-cooled charging plug, has achieved a peak current of up to 700A, while the CCS2 naturally cooled plug offers a continuous current output of 375A. Both products are CE certified, ensuring safety and reliability, with advanced cooling technology guaranteeing high performance and stable operation.   What Can Workersbee Offer Your Business? 1.Comprehensive AC/DC Charging Solutions: Our diverse product lineup includes AC charging solutions for residential and workplace settings, and DC charging solutions for public locations. We cater to your business's custom needs, ensuring equipment remains in optimal condition. 2.Portable AC Charging Solutions: Our EV charging cables and portable EV chargers are lightweight, making it convenient for users to charge anytime. They are designed for excellent compatibility and durability. 3.Reliable High-Power DC Charging Solutions: Our high-performance liquid cooling and natural cooling technologies ensure the safe and stable operation of equipment, enabling fast charging. 4.Cutting-Edge Technology: Our R&D team stays abreast of industry trends and technological developments, applying advanced technologies such as liquid-cooled ultra-fast charging, quick-change terminals, and ultrasonic welding. 5.Reduced Investment Costs: By adopting automated production and modular design, we ensure efficient product manufacturing and ease of maintenance, thus reducing costs from both procurement and operational perspectives. 6.High Standard International Certifications: Our products have passed CE, TUV, UKCA, UL, RoHS, and other certifications, earning trust and recognition from users worldwide. 7.Global Sales and Localized Service: Workersbee charging plugs are sold in many regions and countries globally. We offer localized services in different areas, ensuring your business receives timely, professional after-sales service and technical support.   Conclusion In the era of electrified transportation, Electric Vehicle Charging is becoming increasingly important. AC charging and DC charging each have their own advantages.  For consumers, understanding the differences between the two can help them choose the most suitable charging method based on their specific needs. For charging facility suppliers and operators, a deep understanding of these advantages and disadvantages can help optimize the configuration and layout of chargers, improving the efficiency of the charging network and driver satisfaction. Workersbee believes that we can offer your business more practical and efficient solutions. We remain committed to focusing on user needs, continuously innovating and optimizing our products, and providing robust support for your business.

The electric vehicle revolution has swept the world, and those who are the first to take advantage of it have gained an experience never before experienced in driving a fuel vehicle. Thanks to the instant torque of battery power, electric vehicles start and accelerate faster and are more responsive. Compared with traditional complex internal combustion engines, the electric motors of electric vehicles are simpler, so the control feeling is more stable and precise. In addition, EVs produce almost no noise when driving, making the driving experience more peaceful and comfortable. So, if anyone asks them about the driving experience, these drivers who have switched to EVs will tell you: It’s COOL! However, if you then ask about the unavoidable charging experience, many people may hesitate. That's it, even though electric cars have gained a large number of fans because of their driving experience, electric car charging has always struggled to gain high recognition. This can be sensed from the satisfaction surveys sponsored by many utilities or charger companies. In the final analysis, here are 5 main factors that consumers really consider regarding EV charging.  1.Charging Speed Consumers hope that the speed (time) of charging an EV is as fast as refueling a gasoline car - this is a direction that both charging technology and EV technology need to strive for. We need to understand one fact: charging speed is related to both the charging infrastructure and the charging capacity of vehicles. It's not enough to achieve fast charging with just one of them. High-power DC fast chargers are favored by EV owners because they can output large amounts of power in a short time. Especially during long-distance travel, less waiting time undoubtedly encourages them. As a pioneer China charging cable factory, Workersbee actively caters to market demand. The new generation CCS2 charging connector, utilizing Liquid Cooling technology, has reached a peak output of 700A. Charging for five minutes can increase the range by over 200 km. The stable and efficient charging performance has also earned it a high-standard CE certification. 2.Charging Convenience Drivers' dissatisfaction with Public Charging Infrastructure probably stems from the lack of available chargers when they need to charge. The number of chargers is far below people's needs, meaning coverage is not ideal. Surveys of electric vehicle charging habits show that charging may occur at High-power chargers (HPC) on highway corridors, curbside chargers in streets, chargers in public or workplaces, and a large portion at home. Workersbee's Portable Electric Vehicle Chargers, whether it's the screen-equipped FLEX CHARGER, ePORT, DuraCharger, or the screenless Soapbox series, have received high praise from car owners due to their high compatibility, lightweight, stylish appearance, and intelligent operation.   In addition to requiring available and accessible chargers, drivers need a platform that can quickly find available chargers when their battery levels are low. This may require the joint efforts of maps or various charging network providers. 3.Charging Safety The safety of the electric vehicle charging process involves multiple aspects. Consumers expect charging equipment to have high safety standards, with the charging system being safe, reliable, and stable. Ensuring that various safety issues such as leakage and fire do not occur during charging. At the same time, it is necessary to ensure communication between vehicles and chargers to monitor battery status at all times, prevent overcharging, and maintain battery health. This also requires regular maintenance checks of charging stations to ensure the normal operation of each charger. Finally, in the payment process, payment security is crucial. Whether it's through card payments or platform deductions, consumers want station operators to ensure the security of their funds. 4.Charging Cost Compared to the rising cost of gasoline, charging costs are a factor that consumers consider when transitioning to EVs. Owners hope to minimize charging costs while maintaining charging efficiency, thereby reducing the cost of daily driving. This cost includes electricity costs related to electricity prices, charger types, and regions, as well as installation costs for those who want more convenient private chargers. However, there are various ways to help consumers reduce costs. For example, at charging stations with a stable customer base, using store value or offering tiered pricing discounts. Or, using utility time-of-use rates to encourage drivers to charge during off-peak hours, avoiding overload pressure during peak periods. You can also provide bonuses to consumers more loyal to the brand, to increase long-term engagement. Shared Chargers can be installed in residential areas with concentrated residents to share installation costs. 5.Compatibility With the continuous growth of the electric vehicle market, various charging standards also have their supporters. Different brands and models of vehicles may require different standards and specifications for charging facilities. Therefore, consumers hope that charging stations can be compatible with various brands and models of EVs to improve the convenience of charging facilities. At least when they enthusiastically arrive at the charging station, they should find the correct connector and be able to charge successfully.   Workersbee's Business Advantages 1.Comprehensive Charging Solutions: Offering a full range of charging solutions, including charging sockets, charging connectors, charging cables, portable EV chargers, DC/AC charging cables, etc., to meet the customization needs of Commercial Charging Solutions and Residential Charging Solutions. 2.Strong R&D and Manufacturing Capabilities: With over 16 years of experience in manufacturing and supplying EV charging plugs, and over 500 professional talents in the field. 3.Customized Production: Intelligent factories equipped with automated production lines and leading modular designs for multiple products, ensuring high-quality products while optimizing costs. 4.Safety and Reliability: Multiple intelligent safety protection measures, dual temperature-controlled plug design, ensuring the safe operation of equipment. 5.International Certifications: Products have obtained CE, TUV, UKCA, UL, RoHS, and other certifications. Conclusion Overall, electric vehicle consumers consider charging speed, convenience, safety, cost, and compatibility when charging. These factors will directly affect consumers' purchasing decisions and usage experiences when transitioning to electric vehicles, further influencing the adoption rate of electric vehicles. Workersbee has always focused on these EV charging focal points, and we believe that with technological development and policy support, the charging environment will become brighter. Welcome to discuss with us the charging solutions that suit your business, and together promote the popularity of electric vehicles and improve the charging experience.  

With the rapid expansion of electric vehicles in the auto market share, electric vehicle charging cables as a market segment are also showing booming demand.   The global electric vehicle charging cable market size has reached US$1.3 billion in 2023. According to market analyst forecasts, this value will rise to US$3.9 billion in 2030. In this dynamic market landscape, various innovative technologies are consistently shaping the EV charging market structure, and the demand for Efficient charging cables has never been so strong. Promote the EV charging cable market to flourish in an innovative, efficient, and user-friendly direction. Fully understanding the needs is critical to winning in the EV charging market.   Classification of EV charging cables   By power sources, it can be divided into charging cables for transmitting DC power and charging cables for transmitting AC power. By the charging speed, it can be divided into Fast charging cables and slow charging cables. The fast charging cable here mainly refers to the high-power DC charging cable. The cooling Technology technology can be further divided into high-power DC natural cooling and high-power DC liquid cooling. By shape, they can be divided into straight charging cables and Coiled charging cables. Different cables serve different charging occasions. According to the current market, AC charging cables dominate the market. This mainly stems from the market share of home and workplace charging. Straight cables currently occupy a larger market, but due to the need for flexibility, the future demand for coiled cables will be equally strong.   Coiled charging cables EV coiled charging cable is a flexible, efficient, and safe charging cable specially designed for electric vehicles. Unlike traditional straight cables, coiled cables have a spring-like design, allowing a high degree of freedom in stretching and retracting, making it easy to cope with charging needs in different situations. Improving user charging experience, mainly reflected in: · More Flexible Charging Experience: The flexible nature of the coiled charging cable makes it easy to handle and operate during the charging process. EV owners can quickly extend the cable to their vehicle's charging inlet and retract it when they're done charging, minimizing hassle and saving time. In addition, the excellent elasticity prevents the cable from dragging on the ground during charging, causing the cable dirty and worn. · Easier Cable Management: The compact cable design prevents cable clutter caused by the accumulation of long, tangled cables during charging, as well as potential damage and tripping risks. Expand and contract freely to minimize storage space. · Longer Service Life: It can withstand high-intensity stretching and retraction while ensuring structural stability. It is more reliable and wear-resistant, extending the service life of the cable.     The charging cables from Workersbee, a top EV charging cable supplier, have optional coiled, with reliable power transmission capabilities. They are well-made, have excellent elasticity and toughness, and are recognized by customers as Durable charging cables. The color can also be customized. Ideal for compact charging stations, private garages, or other small spaces.   Fast charging cables Fast charging cables are specially designed for rapid charging of EVs at DC fast charging stations, adding hundreds of miles of range in minutes. The realization of Rapid charging technology is inseparable from temperature control. Currently, natural and liquid cooling technologies are used to maintain plugs, terminals, and cables in a suitable temperature rise range, thereby achieving continuous and stable transmission of high currents. Natural cooling mainly relies on the conductor arrangement design of the cable to form an air channel that is easy to dissipate heat and ensures efficient cold and heat exchange inside and outside the cable. In addition to a more complex structural design, liquid cooling also relies on efficient heat exchange of the cooling medium. It can be divided into oil-cooling and water-cooling media. High-speed charging cables are generally thicker and heavier than AC slow-speed charging cables because they have to carry greater current. They also require stronger durability and a higher level of protection. More stringent high-standard certification is needed to ensure safe, reliable, and stable use in changing outdoor environments.     Workersbee's natural cooling High-powered charging cables can achieve a sustained and stable output of 375A. The cable OD is also lower than the industry average. It has passed CE, UL, and TUV certifications and has been unanimously recognized by EV charger manufacturers.   Market Insights The acceleration of the construction of EV charging stations will further accelerate the demand for EV charging cables. Fast charging cables for significantly reducing charging time for high-speed charging, and coiled cables for greater flexibility. These cables provide strong support for the growth of EV charging infrastructure, the spread of EVs, and the acceleration of the transition to electrified and sustainable transportation. The growing demand for EV charging will surely promote the technological development of charging cables. The first is charging cables that can carry higher power and larger currents. In addition to passenger cars, fast charging can also be targeted at commercial electric heavy-duty fleets. Secondly, there are technical challenges in cable materials and cooling technology, while ensuring stable high current, and lightweight handling. Finally, there may be new ideas for cable shape, such as retractable designs or foldable designs that are more conducive to cable management. Or we can consider adding more functional designs to the cable, such as lighting or display functions. Advantages Workersbee can offer Business · Reliable high-standard products, complete certification, and high-quality service system · Product application of advanced technology by the elite R&D team · Complete supply chain system, modular design, and automated production to effectively control costs · Keen market sense, keep up with cutting-edge technology, and provide more innovative and efficient solutions for your business   Conclusion High-efficiency fast charging cables and highly flexible coiled cables play a huge role in promoting the development of the EV charging market, providing car owners with more convenient, efficient, and reliable charging solutions. Workersbee's diversified product lineup can provide you with more cutting-edge technical practices, complete solutions, and comprehensive after-sales services. Welcome to contact us to order samples or obtain more information.

Electric vehicles (EVs) promise a cleaner, smarter future—but only if charging is fast, reliable, and user-friendly. Different charger types offer hugely different speeds, from mere miles per hour to a full refill in under 30 minutes. Knowing how each charger type performs empowers EV owners to pick the right solution for their needs, ultimately making the transition to electric vehicles more seamless.     What Determines EV Charging Speed? Several factors influence how quickly your EV charges:   Charger type & power output – AC Level 1 and 2 are slower; DC fast charging delivers power directly into the battery.   Battery size and State of Charge (SoC) – Larger batteries take longer; charging is fastest between 20–80 % SoC.   Vehicle’s onboard charger & BMS – These set limits on voltage and current.   Temperature & thermal management – Extreme temperatures slow charging.   Battery age & load during charging – Aged batteries or additional electrical loads can reduce speed.     Level 1 AC (120 V): The Slow but Simple Option   Power: ~1–1.9 kW   Speed: +3–5 miles of range per hour   Best use: Overnight home charging, low daily mileage   Why it works: No installation needed—just plug into a standard outlet   Drawback: Multiple nights for full charge—ideal for light commuting only       Level 2 AC (240 V): Home & Public Sweet Spot   Power: Up to 19.2 kW  Speed: +10–50 miles range per hour  Best use: Home garages, workplaces, public lots  Benefits: Faster charging with time-of-use electricity, cost-effective, battery-friendly  Bonus: Portable Level 2 chargers (like Workersbee’s) combine convenience and top-tier safety       DC Fast Charging: Speed for Every Journey   Power: 25–400 kW  Speed: 0→80 % in 20–45 minutes  Best use: Highway + urban public stations; urgent charging needs  Example: Tesla Superchargers add ~200 miles in 15 minutes—enabled by Tesla’s power and efficiency standards  Industry trend: Adoption of NACS by EVSE makers led Workersbee to invest in fastcharging connectors based on this standard      Wireless Charging: Emerging Innovation with Caveats   Method: Inductive charging through pads—cable-free  Speed: Highly variable, generally slower than Level 2  Best use: Convenient short stops, specialized use cases  Challenges: Infrastructure cost, alignment, still in early adoption stage      Comparing Charger Types at a Glance Charger Type Power Output Range per Hour Full Charge Time Ideal Scenario Level 1 AC 1–1.9 kW 3–5 miles 30–50 h Light commuter, no charger install Level 2 AC 3.7–19.2 kW 10–50 miles 4–8 h Daily charging at home/work DC Fast Charger 25–400 kW 100–300+ miles/hr 20–45 min (0–80 %) Road trips, time-critical refueling Wireless (inductive) Varies Low–medium Slow – medium Niche, convenience-focused use       Choosing the Right Charger for You   Home commuter? → Level 2 charging strikes a practical middle ground—it’s fast enough for daily use without the high costs of rapid charging systems.  Need quick on the go? → DCFC is unbeatable for fast top-ups  Looking for plug-free convenience? → Wireless is promising, but still evolving   Own a plug & cable manufacturer or EVSE operator?Consider reliable, thermalmanaged connectors like Workersbee’s LiquidCooled CCS2 or NACS-compatible options—designed for efficiency and long-term uptime      Technical Hurdles & Workersbee’s Innovative Approach Fast charging pushes the limits of batteries, connectors, and grids. Your charger must handle:  Heat buildup in cables and plugs   Battery wear from repeated high-current use  Peak loads on the electrical grid   At Workersbee, we’re tackling these with:  Advanced cooling systems for high-current connectors  Smart thermal management in cables and plugs  BMS-integrated solutions that balance speed and battery longevity  These innovations form the backbone of our new product lines—built to support sustainable, reliable charging at scale.     Fit the Charger to the Journey There’s no universal “best” charger—it depends on your needs:  Slow & steady (overnight commuters) → Level 1 is cheap and simple  Everyday drivers → Level 2 hits the sweet spot  Frequent travelers → DC fast charging is crucial     Advanced fleets/EVSE providers → Choose scalable, durable solutions like Workersbee’s liquid-cooled CCS2 and NACS connectors   If you’re exploring solutions across varied charging scenarios—or need reliable, high-performance EV connectors—Workersbee is here to help. Let’s innovate charging together.

As EV sales surge， public charging facilities are still in short supply, and the cost and difficulty of installing home chargers are high. The market for portable EV chargers is boosting. Early last year, Allied Market Research released the Portable EV Charger Market, which estimated that the global market size will reach US$388.9 million by 2035.   The new portable charger Flex Charger 2 from Workersbee, a top-tier charging equipment manufacturer, stands out in the fierce market competition.   Next, let’s explore what benefits this portable charger, which combines good looks, excellent charging capabilities, reliability, intelligence, and safety, can bring to your business and your customers. 1. Efficient and flexible charging experience FLEX CHARGER 2 can be adapted to almost 99.9% of electric vehicles. Plug-in, reliable connectivity provides your customers with foolproof power. As a portable electric car charger, it can provide up to 7kw of power, more than three times that of the ordinary charger that comes with the car. This means car owners can easily recharge at home overnight or at the workplace in the daytime, without range anxiety.   In addition to 7kw, there is also a 3.5kw power available. Stable trickle charging better protects the health of the car battery. Car owners can set the charging current according to the power environment and needs—— 6-16A (3.5kW)/10-32A (7kW) current is optional, which is very flexible. You can also reserve a charging time to take full advantage of the time-of-use electricity price discount. All of the above can be easily achieved through the powerful control box.   Flex Charger 2 has a bigger LCD screen, and key charging information is visible. Even under strong light outdoors, it will not affect reading at all.     The responsive touch button design is simple and easy to understand, with almost no learning cost for car owners. Control charging, power on/off, and scheduled charging with just one touch. The charging process is visible and controllable through this small but powerful control box, no less the performance of fixed installation home and public chargers.   Unlike the high-standard electrical requirements of household and public charger installations, the Flex Charger 2 is very low. It charges on any standard 230V wall outlet, requiring no hard wiring and no need for an electrician to install it. One end is equipped with a Schuko or CEE plug, you only need to ensure the socket current matches the charging current. Whether as a backup charger for long trips or a daily charger for home use, it performs very well. Whether charging outdoors or in the garage, it is reliable, safe, and trustworthy.   2. EYE-CATCHING look In contrast to the common public model designs on the market, Flex Charger 2 boasts a futuristic and stylish design, attracting significant attention upon its launch. The minimalist white space design of the casing, the oversized display screen, and the indicator light allow car owners to control the real-time charging status at any time. It's both lightweight and sturdy and can easily placed in the trunk. The robust structural design also allows it to withstand extreme pressure.   3. Multi-scenario-friendly portability We can provide Handbags. The soft, premium cable easily stows away in the bag and then places in the trunk without taking up much space. As the car owner’s travel companion, it is always ready to provide power. In addition, optional wall brackets are available, for easy installation on the garage wall. Better cable management, taking care of both cables and the connector. The standard cable length is 5m, which can meet the needs of most charging scenarios, and the length can also be customized according to your requirements.   4. High-level multiple security protections Workersbee always puts charging safety first. Flex Charger 2 uses dual temperature control protection of the plug and control box to monitor the charging temperature in real time to ensure safe current transmission throughout the entire path. Excellent waterproof and dustproof performance, providing IP 67 protection level. Whether it is raining or snowing, the key parts of the charging connection can receive strong protection. Your customers don’t have to worry about charging safety and reliability in bad weather.   5. User-centered intelligence Besides setting charging through the control box screen, car owners can also connect the device to their mobile phone via Bluetooth. OTA remote upgrades can be performed, charging can be configured and checked at any time through the APP.   6. Trustable durability Workersbee always implements high-standard and high-quality production requirements. Each batch of products will undergo several rigorous tests before shipment to ensure the product's durability and service life. Considering the product is mainly used outdoors, Flex Charger2 is anti-ultraviolet, anti-drop, and anti-crush. Pliable TPU cable is flexible even for cold weather use. The product has passed CE/TUV/UKCA/ETL certification and meets online and offline sales requirements.     Market Insights As more and more consumers flock to the electric car market, drivers’ demand for charging convenience will also increase. The current deployment of public chargers is limited, while the wiring of household chargers is difficult and the electrical requirements are high, causing high installation costs. Therefore, with the widespread adoption of EVs, sales of portable EV chargers are bound to skyrocket. What benefits can Workersbee Flex Charger2 bring to B-side customers? · Reliable charging solutions: We can provide your customers with more reliable, convenient, and safe personal charging products. Ensure stable charging performance, integrate intelligent adjustable current and scheduled charging to meet the needs of different customers. · Enhance the brand-added value of your business: Use technological design and excellent product performance to add competitive advantages to your brand and attract more consumer attention. · Improve customer loyalty: The high-standard certification system and strong production strength have brought years of word-of-mouth accumulation to meet customers' quality requirements for charging products. · Increase profits: Develop pricing strategies to increase business profit margins as additional services to your business. We can help you improve production efficiency through our cooperation, thereby controlling costs and increasing profits. · Thoughtful after-sales service support: Workersbee has a complete after-sales service system. Respond to customer needs promptly, provide solutions, and continuously track usage to ensure customer satisfaction.   Workersbee always insists on product-centered, user-centered, technological innovation, and iterative optimization in the wave of electrified transportation. We keep enriching our product line to provide your business with more responsive solutions to market changes.   Conclusion Flex Charger 2 boasts a charging capacity of up to 3.5kw/7kw, making it ideal for charging EVs anytime and anywhere. Its sleek, portable, and lightweight design ensures convenient usage. Built in a highly readable LCD screen, users can easily adjust the current, schedule charging, and monitor the charging status effectively. Additionally, it supports Bluetooth remote upgrade and mobile APP control, offering enhanced flexibility and convenience. With dual temperature control protection and an IP67 dustproof and waterproof rating, Flex Charger 2 ensures safe and stable charging. It has also obtained TUV/CE/ETL/UKCA certification.   For further information about our products or to order samples, please don't hesitate to contact us. We are glad to provide you with a detailed quotation and customized solutions to meet your given needs.