Performance requirements and specifications of automobile high voltage harness

(1) Electrical performance: in terms of electric passenger vehicles, high-voltage cables mainly play the role of transmitting energy, which needs to transmit the energy of the battery to each subsystem. Therefore, the high-voltage harness of electric passenger vehicles designed must meet the high-voltage and large current transmission.

(2) Shielding: during the operation of electric vehicles, the repeated changes of electrical loads and the frequency conversion technology widely used in the system cause sharp fluctuations in harness voltage, current and frequency, resulting in large electromagnetic interference. Generally, high-voltage connectors are 360 ° shielded, and high-voltage cables are shielded cables.

(3) Mechanical performance: due to the large diameter of the high-voltage cable of the electric passenger vehicle, special routing is required, that is, the high-voltage harness of the electric passenger vehicle is arranged outside the vehicle. Therefore, the high-voltage harness of the electric passenger vehicle must be designed for mechanical protection, dust prevention and waterproof

(4) Durability: the high-voltage harness shall have the properties of temperature resistance, weather resistance, corrosion resistance, vibration resistance, cable abrasion resistance, etc., and shall have large safety margin and connection life to ensure long-term reliable operation of the vehicle. In order to improve the service life and quality of the high-voltage harness, the connection between the high-voltage cable and the high-voltage connector should be reinforced, the connection between the high-voltage connectors should be locked, and the wiring scheme should be optimized. The high-voltage harness material should be wear-resistant

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