The power battery is generally placed at the bottom of the vehicle. When the waterlogged road surface is serious, the battery pack may encounter the problem of water immersion or impact. The waterproof problem of the battery pack and its external equipment (high-voltage charging harness, etc.) is particularly critical. .
After the water wading test is completed, check whether the high-voltage system of the whole vehicle is working normally, remove the high-voltage wiring harness parts assembly from the test vehicle, conduct a destructive test after the insulation resistance and withstand voltage test, and use the test paper to wipe the connector. / splitter / rubber parts, no water traces / vapors are allowed in any high-voltage components, and patina and other corrosion phenomena are not allowed at the terminals and wire crimping.