Are New Energy Vehicles Afraid of Water Immersion?
2 Answers
In the electrical circuit system of electric vehicles, the "low-voltage system," which is the same as in traditional fuel vehicles, does not have the capability for sustained water immersion. The waterproof rating is ≤IPX5. If wires or the ECU are submerged in water for a period of time, water ingress may occur, leading to short circuits in the low-voltage circuit. Taking the ECU (vehicle computer) water ingress as an example, although a short circuit in the low-voltage system due to water ingress will not cause electric shock injuries to personnel, it can render the vehicle undrivable. Below is relevant information: IP67 Protection Rating: Electric vehicles generally have an IP67 protection rating. The entire vehicle and Class B high-voltage components must undergo local experimental testing, with the most important test indicators being the vehicle's water immersion capability and the waterproof capability of Class B high-voltage components; IP Protection Rating: The two digits following the so-called IP protection rating are explained as follows: The first digit is the solid particle protection rating, ranging from 0 to 6, indicating protection against particles from large foreign objects to dust; The second digit is the liquid ingress protection rating, ranging from 0 to 8, indicating protection against everything from vertical water droplets to water pressure at the bottom. The higher the number, the stronger the protection capability.
I think new energy vehicles are actually more durable in wading than traditional gasoline cars. Based on my experience, driving an electric car in heavy rain or through shallow puddles isn't something to worry too much about. Their batteries and motors have excellent sealing, with waterproof ratings like IP67, meaning they can be submerged in water for half an hour without issues. Gasoline cars fear water entering the exhaust and stalling, but electric cars don't have this problem. However, you still shouldn't take too many risks—if the water depth exceeds the door sill or the center of the wheel hub, don't force your way through. In case of a short circuit in the high-voltage system, it could cause vehicle failure. When driving normally, pass through accumulated water slowly and avoid splashing. It's important to check the recommended wading depth in the vehicle manual—safety first. The good wading performance of electric vehicles also reduces pollution risks, which is quite eco-friendly.
