With the rapid development of the new energy electric vehicle industry, electric vehicle wiring harnesses have also obtained greater development opportunities. Electric vehicle wiring harness is the main network of the entire automobile circuit, but also the bridge and link of the vehicle electrical components, and the nervous system of vehicle power and signal transmission. Electric vehicle high-voltage wiring harness is usually used for high-voltage battery, inverter, transformer, low-voltage battery, air conditioning compressor and other parts of the connection, mainly used in the distribution box wiring harness signal distribution, responsible for high-quality and efficient transmission of electric energy, add shielding design, play a role in shielding external signal interference.

New energy vehicles need high voltage and strong electricity to drive, and high voltage harness is the carrier carrying high voltage and strong current. The internal environment of electric vehicles is harsh, and it is a confined space, high temperature, oil pollution and electromagnetic interference are serious, high voltage wiring harness in the car wiring, wiring harness wire selection requirements are at least 150 ° C heat resistance, and the high voltage connector terminal should match the cable line, and dust and waterproof test, high voltage wire size should be stable, good aging resistance.

New energy vehicle wiring harnesses have the characteristics of high voltage, high frequency, high current and high temperature, especially high voltage wiring harnesses. Compared with low-voltage wire harness, high-voltage wire harness terminals need to pass a larger current, and it is easier to generate heat, which will further affect the mechanical strength of the terminal and the insulation performance of the wire harness, plus the oxidation of the conductor will further aggravate the heating problem, which means that the production of high-voltage wire harness requires higher professional technology.