The high-voltage wiring harness and the low-voltage wiring harness are divided into upper and lower levels.
In order to avoid the electromagnetic interference generated when the high-voltage wire harness transmits strong current, resulting in the risk of electromagnetic interference for the power supply of the control unit and the signal transmission of the low-voltage wire harness, the layered design of the high-voltage wire harness and the low-voltage wire harness is generally adopted;
Due to the different current levels of different models, the distance between the layers of high and low voltage lines is generally guaranteed to be within 200-300mm.
Considering the different current levels of different models, the distance between high and low voltage parallel wiring for commercial vehicles must be greater than 400mm, and the distance between high and low voltage parallel wiring for passenger vehicles must be greater than 200mm; if the actual situation does not meet this distance, you can consider perpendicular wiring.
Verified by real vehicles, this scheme effectively avoids the interference generated when working with strong electricity. Layered wiring can effectively protect against EMC interference generated when high-voltage lines work.