EVCOME EV charging stations for better life---Top EV charging stations manufacturers & suppliers in China.
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EVCOME EV charging stations for better life---Top EV charging stations manufacturers & suppliers in China.
According to the structure, new energy cables are divided into single-core and multi-core. New energy automotive cables are different from ordinary automotive cables, mainly because the use environment has undergone great changes: 1. The current of high-voltage and high-current (vehicle) new energy cables can reach 600/300A, while the battery voltage of traditional fuel vehicles is generally 12V. Corresponding wire withstand voltage rating is less than 60V. 2. Large wire diameter. Large number of cables (vehicle) High-voltage battery inverter transformer/Low-voltage battery/Air conditioner compressor/Electric heating/Power distribution unit.. Many electrical structures are connected by cables, resulting in a large number of cables being discharged in a limited space. 3. The cable in the exposed space (non-vehicle) charging gun is exposed for a long time, and its weather resistance, abrasion resistance, bending resistance, and tear resistance are strictly required. Due to the characteristics of large voltage/high current and large number of large-diameter wires in the high-voltage wiring harness in the vehicle, the design of the wiring harness faces challenges such as wiring, safety, shielding, weight and cost. 1. Wiring The layout of the high-voltage wiring harness in the vehicle has the following requirements. (1) Under static load, the minimum turning radius of the outer diameter of the wire is 4 times. (2) Under dynamic load, the minimum turning radius of the wire outer diameter is 8 times. (3) The distance between high and low voltage wires should not be less than 100mm. (4) The distance from the outlet end of the high-voltage connector to the first fixed point shall not exceed 100mm. The distance between adjacent fixed points of new energy cables generally does not exceed 150~200mm. (5) The high-voltage wire harness is arranged at the bottom of the high-voltage wire harness. (6) Select flexible wires such as silicone rubber wires and flexible cross-linked polyolefin wires. 2. Safe high voltage and high current, in addition to its own high voltage has strict requirements on insulation performance, the high temperature caused by high current must also be considered. (1) Wire material selection: 600V900V (AC) uses high-voltage wires (refer to |SO19). The high wall thickness line is adopted, and the wall thickness is 0.6mm-1.1mm. Heat-resistant wire, heat resistance above 150 degrees: optional silicone rubber wire, cross-linked polyethylene cross-linked polyolefin material, excellent flame retardant effect. (2) Sealed new energy cables are matched with high-voltage connectors. To achieve waterproof and dustproof sealing (IP67, IP69K), the wires must have good roundness, dimensional stability and aging performance. 3. The reason why electromagnetic shielding is required for shielding high-voltage wiring harnesses is. High voltage and large AC currents generate electromagnetic field disturbances. The rapid power failure of the electrical components of the new energy cable will cause electromagnetic interference. (1) Select the shielded wire. (2) BundleShielding- overall shielding, mostly Japanese OEM. (3) The aluminum tube shield is directly inserted into the aluminum tube, which is mostly used for Japanese and American OEMs. 4. Weight and cost. (1) For new energy vehicles, light weight is very important to improve the cruising range, so the weight of the wiring harness can start with the selection of materials, the conductor material can choose a new conductor, such as a new aluminum conductor: the insulating material can choose a low-density material and thin wall machining. (2) In the near future, high-voltage wires in vehicles are mainly imported, and the threshold for wires is high. The output of mass-produced models in the early stage is small, and new energy vehicles are facing greater cost pressures, and more domestic resources need to be developed. 5. The high-voltage wiring harness in the environmentally friendly new energy cable car must use low-volatile, low-VOC, and low-odor materials. .
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