Requirements for layered and side-by-side arrangement of high-voltage wire bundles

In the layout design of automotive high-voltage wiring harness, the selection of high-voltage cable materials should be minimized to reduce the cost and weight pressure of the wiring harness. According to the general layout and requirements of high-voltage electrical equipment, layered layout and parallel layout are generally adopted. Here is a brief introduction to the requirements of layered layout and parallel layout of high-voltage wiring harness. 1. Requirements for Layered Arrangement High voltage and low voltage wiring harnesses can be divided into upper and lower levels. In order to prevent the electromagnetic interference generated by the high-voltage wiring harness during the transmission of strong current, which causes the low-voltage wiring harness to supply power to the control unit and the signal transmission to be subject to electromagnetic interference, the layered design of the high-voltage wiring harness and the low-voltage wiring harness is generally adopted. Due to the different current sizes of different models, the distance between high and low voltage lines is generally guaranteed to be within 200-300 mm, which can effectively avoid interference during strong current operation through real vehicle verification. Hierarchical cabling can effectively prevent the EMC interference caused by the operation of high voltage lines. II. The required direction of parallel arrangement is the same, but the auxiliary body mechanism is arranged in parallel. Arrange side by side to ensure that the high and low voltage harnesses are parallel and not crossed. When the high-voltage wiring harness works, the EMC interference of the controller is effectively protected. The parallel wiring mode is suitable for hybrid vehicles, and is provided with a high-voltage wiring harness connecting unit wiring area and an engine electronic injection wiring harness arrangement area, thereby effectively avoiding electromagnetic interference generated by the high-voltage wiring harness during power supply.

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