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1October 28th 10, a BYD Qin Pro in the special call charging station in Changning Road, Yantai? EV spontaneously ignited after charging, and the vehicles on the scene have ignited a fire, which hardly penetrated the whole body. As of press time, BYD officials have not issued an official response to this matter.

Recently, there have been many accidents about the spontaneous combustion of pure electric vehicles, but comparatively speaking, BYD's fire is the most controversial. Because BYD has always claimed that it was a "battery accident in 15", and it is also the only manufacturer that can produce its own batteries and be self-sufficient. Consumers will also think that BYD cars can be well controlled in terms of battery safety. But it turns out that both traditional manufacturers and new power enterprises are equally worried about battery safety.

According to the screenshot of the network transmission, this BYD Qin Pro? EV means that the vehicle spontaneously ignites when it is started after the charging is completed, and there is no abnormality during the charging process. When the owner started the vehicle after charging, he found that the chassis of the vehicle had abnormal noise and spontaneously smoked. The owner immediately got off the bus and called the fire alarm number 1 19. Firefighters also quickly rushed to the scene to control the fire.

In fact, isn't this BYD Qin PRO? The first spontaneous combustion accident of electric vehicle. At the end of May this year, at a charging station in Shenzhen, a BYD Qin Pro? EV spontaneously ignited, and the video shows that the car was finally burned into the only remaining frame. According to the description of the owner at that time, the accident happened around 6 o'clock and the vehicle was charged around 4 o'clock in the morning.

It can be found that the two accidents are similar, both of which are spontaneous combustion of vehicles after charging is completed. So I think BYD should investigate this as soon as possible to see what the reason is.

At present, the spontaneous combustion of pure electric vehicles is related to batteries in nine cases out of ten. There are also several types of battery spontaneous combustion, which can be roughly divided into five types, namely, charging spontaneous combustion, driving spontaneous combustion, collision spontaneous combustion, soaking spontaneous combustion and parking spontaneous combustion, among which charging spontaneous combustion accounts for the highest proportion, even exceeding 40%. ?

Why is the spontaneous combustion of charging high? This is because there are many uncertainties in charging, such as using non-standard charging wires and using non-compliant charging piles. It will bring security risks to the charging of pure electric vehicles. Moreover, all pure electric vehicles now have the function of fast charging, which shortens the original charging time from 7-8 hours to 3-4 hours, and also increases the safety hidden danger of automobile spontaneous combustion to some extent.

Secondly, it is spontaneous combustion during driving. When the battery is in the process of discharging, the cooling system of the battery fails and cannot dissipate heat. If too much heat is stored, it will cause spontaneous combustion. In addition, there is a problem with the related electronic control system of the battery, which will also cause spontaneous combustion.

There are also many battery collisions and spontaneous combustion. Now the batteries of pure electric vehicles are all on the chassis, so the batteries are more likely to bump. Sometimes, pure electric vehicle drivers will bump the chassis, but there is no problem when bumping. However, after the battery was damaged and deformed, it took some time for the problem to appear. So many consumers are confused.

Sometimes, when the car is parked there, it will spontaneously ignite. This may be because the cooling system does not work when the car is parked. Due to the high internal temperature and high external temperature of the battery in summer, it is easy to spontaneously ignite.

In the development stage of pure electric vehicles, the battery is definitely immature, otherwise so many accidents will not happen, just like the problems often occur in the early stage of development of fuel vehicles. We need to explore experience and improve the safety of pure electric vehicles.

BYD, as the head enterprise of its own brand of new energy vehicles, we do not deny its success in battery research and development and pure electric vehicle research and development. However, in terms of promotion and publicity, we shouldn't talk too much, such as the 15 battery accident, so we can't talk too much, otherwise we can only slap ourselves in the face.

This article comes from car home, the author of the car manufacturer, and does not represent car home's position.