The overlap between the shielding layer and the inner core terminal is because the shielding layer is not completely insulated, resulting in the leakage of the shielding wire to the terminal. The copper wire and the wiring harness were tested on the road after loading, and the copper wire leaked out and overlapped with the terminal, resulting in the failure. As shown in the figure below, the shielding wire pierces the wire sheath but does not pierce it. After long-term vibration of the vehicle, the shielding wire pierces the wire sheath, resulting in a short circuit and ablation.
Correct processing technology and reasonable selection of raw materials are the prerequisites for the realization of the function of the wire harness. Only by reasonably selecting the raw materials in the early process design stage and formulating a reasonable processing technology can the wire harness be normal, stable and reliable. Circuit transmission task; the author proposes a reliable processing plan based on the long-term experience in the processing of heavy-duty new energy high-voltage wire harness products, and selects them according to the recommendations. claim damages.