New Energy Vehicle Wiring Harness Characteristics

The high-voltage wiring harness of new energy vehicles is a key component of the high-voltage electrical system, which provides a guarantee for the reliable operation and safety of new energy vehicles. It carries the internal and external wiring harness connection of electric and hybrid vehicles, distributes power through distribution boxes, transmits power efficiently and high-quality, shields external signal interference and other functions, and is the neural network of high-voltage system of new energy vehicles. Wiring harness characteristics of new energy vehicles; The performance of the voltage and temperature resistance of the low-voltage wiring harness is much higher than that of the low-voltage wiring harness. Domestic main engine factories usually use shielded high-voltage wires. In recent years, Japanese main engine factories mainly use the process of wrapping the shielding net outside the non-shielded high-voltage wires. Shielding high-voltage lines can reduce the impact of EMI (electromagnetic interference) and RFI (radio interference) on the vehicle system. The whole high-voltage wiring harness loop realizes shielding connection, and the high-voltage wiring harness shielding layer of the interfaces of the motor, the controller and the battery is connected to the shell of the battery motor controller through the crimping structure of the plug-in and the like, and then connected with the vehicle body grounding. Shielding of the high voltage line is not necessary for the cable to conduct data, but radiation from the high voltage line can be reduced or avoided. (Necessity of high voltage harness shielding) Withstand voltage performance: the rated high voltage resistance of conventional vehicles is 600 V, and the voltage of commercial vehicles and buses can be up to 1000 V; Withstand current performance: according to the current of high voltage system components, it can be up to 250 ~ 400 A; Temperature resistance: high temperature resistance grades are 125 ° C, 150 ° C and 200 ° C, and 150 ° C conductor is selected for high temperature; Low temperature conventional -40 ° C.

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