Details of automotive high-voltage wiring harness test standards

At present, with the development of technology and R&D capabilities, automobile automation control has become the mainstream of the times. Among them, automobile wiring harness is the "soul" part of the whole car body, and its quality has a great influence on the performance of the car. The following introduces the key of automobile wiring harness in the whole vehicle electrical system.

Summary of automobile wiring harness: Automobile wiring harness is mainly used to connect the charging port and battery, the inside of the battery, the battery and the engine and other components, as well as battery energy storage equipment, as a carrier of power transmission inside the car. It is the key to the whole vehicle electrical system, which enables various electronic instruments on the car to operate normally and realize a variety of intelligent functions;

Secondly, it can provide power for new energy vehicles and hybrid vehicles for energy conversion and transmission. Therefore, automobile wiring harnesses should be fully tested for quality control during factory processing and production.

The items for wiring harness detection are different in different industries, but under normal circumstances, the items of wiring harness testing include the following four contents: conductivity test, wiring harness impedance test, connection resistance of wiring harness connecting wires and connectors, and connection firmness test of connectors on wires.

Test details: Wire harness conductivity and impedance test are the most basic inspection items to ensure the quality and reliability of wiring harnesses. Through this inspection project, early failure products such as short circuit, open circuit, and miswiring can be eliminated. Not only the wiring harness conductivity is tested, but also the low-temperature winding test is required. It is used to test the performance of round cables or round insulated core wires under low temperature conditions and requires use with a low-temperature box.

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