High Voltage Electromagnetic Compatibility Design
Since there is a high-voltage AC system on a pure electric vehicle, which has strong electromagnetic interference, the power line and signal line should be isolated or separately wired as much as possible when designing the high-voltage wiring harness; the two ends of the power line should be considered to be isolated and grounded to prevent the grounding loop from forming a common Impedance coupling couples noise to the signal line; input and output signal lines should avoid being arranged together to cause interference; input and output signal lines should be avoided on the same connector as much as possible, if it cannot be avoided, the input and output signal lines should be staggered.
Protection and identification design of high-voltage components and high-voltage wiring harnesses
The protection of high-voltage components mainly includes waterproof, mechanical protection and high-voltage warning signs. Especially the components arranged in the cabin, such as motors and their control systems, electric air-conditioning systems, DC/DC voltage converters, on-board chargers, etc., and the connection interfaces between them, all need to achieve a certain level of waterproof and protection. And high-voltage components should have high-voltage danger warning signs to warn users and maintenance personnel to pay attention to these high-voltage components during maintenance and repair.