, it was a hot and scorching summer, and now the south, north China, and northeast regions are also experiencing or will soon usher in large-scale heavy rainfall. At this time, apart from the traffic jams caused by heavy rain, what car owners are most afraid of is the impact of vehicles being soaked in water.
Especially now that the popularity of electric vehicles is increasing, electric vehicles and traditional fuel vehicles have larger motors and battery packs, will they be more afraid of water? Are the consequences more serious after soaking in water?
Previously, during the heavy rain in Zhengzhou, Henan, we could see countless new energy vehicles soaked in the flood. Although the country has national standard documents that require the waterproof performance of the power battery of new energy vehicles, the severity of long-term immersion in the flood far exceeds laboratory test. Because GB30381-2020 "Safety Requirements for Traction Batteries for Electric Vehicles" tests the waterproof performance of power batteries, it is only soaked in water at a depth of 1 meter for 30 minutes.
New energy vehicles will cause irreversible damage to the battery after soaking in water. Usually, the water on the road has complex components and therefore has a certain degree of conductivity. When rainwater enters the battery, it will react with the external structure of the battery under the action of voltage and corrode the external structure of the battery. After the battery packaging structure is destroyed, the rainwater will enter the battery. The interior of the battery reacts with the battery material and electrolyte, leading to the complete failure of the power battery. At the same time, the battery pack in the battery also has Fule’s power line and BMS pipe buried system. Rainwater entering the interior will damage the internal lines of the battery pack and BMS. Damage to the system's circuit boards would create a huge safety hazard if it did not cause the battery to fail.
And after the battery is severely flooded, the insurance company will often not pay for the repair. The general situation is that the battery is seriously damaged after the test, and basically it can only be scrapped. The reason is that the cost of replacing the battery is relatively high.
Therefore, new energy vehicles should be extra cautious about soaking in water. When a new energy vehicle enters water, if there is a slight accumulation of water, you only need to clean the stains inside and outside the car. The exterior cleaning is very simple and can be treated with cleaning agents, but the cleaning of the interior requires professional treatment. At the same time, you can also drive the car to a ventilated place and observe whether there is residual water in the car. If there is, wipe it with a towel or blow it dry with a hot air blower to avoid damage to the interior of the car caused by residual water.
If there is serious water accumulation, do not start the car easily; you need to contact professionals to the scene to measure the temperature of the battery and high-voltage components to avoid internal short-circuits and fires that may cause serious losses.
*Statement: The above content and opinions only represent the author, and have nothing to do with the online auto market. If there is any wrong source or violation of your legal rights, please contact us by email. Email address: marong@cheshi.com
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