As the main component of the cable, the EV cable is the carrier of power signal transmission, which plays a huge role in the charging process of electric vehicles. EV cables can be mainly divided into cable materials for charging pile stations and high-voltage cables in vehicles.
1. Background technology
As electric vehicles become more and more popular, customers of electric vehicles (EV) often want their EV to charge faster. Therefore, in the current market, there are various EV charging cables and EV charging sockets for charging EVs. Then we will understand their basic technical implementation elements.
2. Technology realization elements
An electric vehicle charging gun for an electric vehicle may often include: a handle including a handle cover; and an electric vehicle charger plug part, which is usually connected to the handle and configured to be attached to a vehicle charging socket, the socket is usually designed as a polymer-ceramic composite with at least one polymer and at least one ceramic. When designing an EV charging cable, at least one ceramic will be incorporated into the polymer to dissipate heat. At the same time, since ceramic has little or no effect on the electrical conductivity of the plug part, the plug part of the EV charging cable is usually kept as an electrical insulator.
When selecting the right components for your infrastructure, it is vital to match the EV charger manufacturing process with the specific requirements of the region, such as the widely adopted CCS2 charging standard or the emerging demand for V2L applications.
To help our clients choose the most efficient solution for thermal management and power stability, we have developed a specialized Polymer-Ceramic Composite. Below is a technical comparison showing how it outperforms standard XLPO/TPU materials in high-power environments:
| Technical Feature | Vehicle High-Voltage Cable (Internal) | Charging Station Cable (External) |
| Primary Material | Advanced Polymer-Ceramic Composite | High-Grade XLPO / TPU |
| Core Advantage | High thermal conductivity with zero electrical impact | Superior flexibility and weather resistance |
| Heat Dissipation | Exceptional (Ceramic-integrated for rapid cooling) | Standard (Passive air cooling) |
| Dielectric Strength | High Insulation (Ideal for 800V+ systems) | Standard Industrial Grade |
| Thermal Stability | Maintains integrity at continuous high temperatures | Optimized for outdoor ambient variations |
| Typical Application | In-vehicle Power Battery & Motor Systems | DC Fast Charging Piles & Public Stations |
At AG Electrical, our production method integrates cutting-edge material science with precision engineering to ensure every EV cable and socket meets rigorous international standards. Our specialized EV charger manufacturing process is divided into four critical stages:
Step 1: Precision Material Compounding
The process begins with the synthesis of our proprietary polymer-ceramic composite. Unlike standard insulation, we integrate micro-fine ceramic particles into high-grade polymer bases. This stage is crucial for creating a material that offers high thermal conductivity while maintaining total electrical insulation. The compounding is performed under controlled temperatures to ensure a uniform distribution of ceramic elements, preventing "hot spots" during high-speed charging.
Step 2: High-Voltage Cable Extrusion
Once the material is prepared, it enters the extrusion line. Here, the EV cable core is formed by coating high-conductivity copper conductors with our specialized insulation layers. For vehicle high-voltage applications, we utilize a multi-layer extrusion process to provide both mechanical durability and superior dielectric strength. This ensures the cable can handle sustained high-current loads without degrading the outer jacket.
Step 3: Precision Socket & Plug Molding
The EV charging socket and plug components are manufactured using high-pressure precision injection molding. We use heat-resistant composites that are specifically engineered to withstand thousands of insertion cycles. By utilizing the same polymer-ceramic technology in the socket housing, we facilitate rapid heat dissipation away from the contact pins, which is the most common point of thermal stress in EV charging systems.
Step 4: Rigorous Testing & Quality Verification
The final stage involves a comprehensive suite of safety and performance tests. Every batch undergoes:
Conductivity Testing: Ensuring zero power loss across the cable length.
Thermal Stability Verification: Testing the components under extreme temperature cycles to simulate fast-charging environments.
Dielectric Withstand Test: Validating the high-voltage insulation integrity to prevent electrical leakage.
Insertion Force Testing: Confirming the socket’s mechanical reliability for long-term use.
We use this composite because it offers exceptional thermal conductivity. It allows the cable to dissipate heat rapidly during high-current charging while remaining a total electrical insulator, ensuring both speed and safety.
Yes. By using precision injection molding and heat-resistant composites, we ensure the socket can withstand over 10,000 insertion cycles and maintain structural integrity even under continuous thermal stress.
Our production method follows strict international protocols. Every component undergoes rigorous testing, including dielectric withstand and thermal stability verification, to ensure compliance with global EV safety standards.
