Knowledge of the use of cables in automobiles

The following explains the difference between new energy electric vehicle charging cables and high-voltage cables

Let's talk about the application first. In the car, the high-voltage electrical system is mainly responsible for starting, driving, charging and discharging, and air conditioning power.

Mainly include: battery system, powertrain, high-voltage electronic control system, charging system, high-voltage equipment, and its wiring harness system. Electric vehicle high-voltage lines are used to connect the charging port and the battery, the interior of the battery, the battery and the engine and other components, and battery energy storage equipment.

as a carrier of power transmission. Due to too many changes in the application environment in the car, high performance requirements are required for the high-voltage cables of the car. It must go through strict testing and use of power cables, and meet high standards for production requirements. it is necessary.

For electric vehicle charging cables: The charging cables are used to connect the electric vehicle charging device and the charging infrastructure, so as to transmit power to the electric vehicle. The following introduces the distinction between the cable characteristics of the two products from the outside to the inside, and then the distinction from the certification standards. From cable protection measures, physical performance requirements to cable cores, the differences between the two types of cables are introduced in turn. These include more below.

Protection measures: The internal environment of the car is complex and harsh, and necessary protection measures should be taken around the high-voltage cable of the car; the charging cable has no protection measures and must withstand various shocks and UV exposure.

Physical performance requirements: Automobile high-voltage cables need to meet the wear-resistant requirements of automobiles; charging cables must meet the rolling resistance requirements of mobile cables.

Chemical resistance: Automobile high-voltage cables must withstand various liquids that can be contacted on the car; charging cables must withstand various liquids in the living environment outside the car.

Size requirements: Due to space constraints, automotive high-voltage cables have strict size requirements. The smaller the size is, the better; the charging cable has no size limit, and can be made thicker and larger.

Color requirements: Internationally, the color of automotive high-voltage cables is orange; however, there is no requirement for the color of charging cables. The number of cable cores is different: for the convenience of laying, automobile high-voltage cables are usually single-core; the charging cable is usually a multi-core integrated cable, which includes high-voltage main lines, ground lines, low-voltage signal lines, and even communication. Double Active Line (CAN).

The international standards are different: the international standards for automobile cables are formulated by the ISO organization; the international standards for charging cables are formulated by the IEC organization.

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