Automotive high-voltage wiring harness performance requirements

For new energy electric vehicles driving on the road, the equipment applied to the car has an important role in the operation of the vehicle work, as an important carrier to connect the equipment, the performance requirements of high-voltage cables need to meet the standards. This is the main point of the narrative.

(1) electrical performance: electric passenger car, high-voltage cables mainly play a role in the transmission of energy, the need to transfer the energy of the battery to each subsystem, so the designed electric passenger car high-voltage wiring harness must meet the high-voltage high current transmission.

(2) shielding: electric vehicle operation, repeated changes in electrical loads and a large number of frequency conversion technology used in the system, resulting in violent fluctuations in harness voltage, current and frequency, resulting in large electromagnetic interference. Usually high-voltage connectors are 360 ° shielded, high-voltage cables are selected shielded cable.

(3) mechanical performance: due to the large diameter of the electric passenger car high-voltage cable, the need for special wiring direction, that is, the layout of the electric passenger car high-voltage harness outside the car, so the electric passenger car high-voltage harness must be mechanical protection and dustproof waterproof design

(4) durability: high-voltage harness should have temperature, weather, corrosion, vibration and cable scratch resistance and other properties, and has a large safety margin and connection life, to ensure that the vehicle can be long-term reliable operation. 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 connector should adopt a locking structure, and the wiring scheme should be optimized, and the material of the high-voltage harness should be selected as wear-resistant material.
 

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