"Splashing water on the roof to cool down" and "wearing sunscreen clothes for the car"... Recently, the continuous high temperature weather has made some new energy vehicle owners "worried", and they have come up with many ways to cool down their cars.

　　Since July 20, the Central Meteorological Observatory has issued a high temperature warning for 29 consecutive days.

In the next few days, the temperature in some parts of my country will still exceed 40 ℃.

　　Will high temperature weather affect the batteries of new energy vehicles and increase the probability of safety accidents such as spontaneous combustion and explosion?

Regarding this question of many car owners, Lin Cheng, chief scientist of the National Engineering Research Center for Electric Vehicles of Beijing Institute of Technology, told People's Net Finance that most of the vehicles that have spontaneous combustion are caused by serious collision damage; the spontaneous combustion caused by battery quality or battery defects rare.

Owners should not be overly alarmed.

　　Lin Cheng explained that most of the lithium-ion power batteries currently used by automobile companies have an operating temperature range of about 15-35 °C. When the ambient temperature is high, forced heat dissipation is required.

Electric vehicles are equipped with air-cooled or liquid-cooled forced fan heating systems, which can work normally when the ambient temperature reaches 45 °C.

　　Regarding the concerns raised by new energy vehicle owners about potential safety hazards caused by high temperature weather, Zhang Hong, secretary general of the New Energy Vehicle Branch of China Automobile Dealers Association, said that the following measures can be taken to prevent them from happening: First, try to choose non-exposure parking lots when parking new energy vehicles. Avoid prolonged exposure of the vehicle to the sun; secondly, after getting in the car, the car owner first opens the window to release the hot air in the car, and then closes the window and turns on the air conditioner to prevent the hot air from igniting combustible items in the car; thirdly, check the coolant and other parts through the instrument Whether the equipment is sufficient and normal, the air conditioner in the car for a long time in summer, and the serious lack of coolant is one of the reasons for spontaneous combustion; the fourth is to check the tires, long-distance travel in summer or prolonged exposure to the sun may cause tire blowouts or even fire; fifth is charging Pay attention to the interface, do not blindly plug it in, it is best to observe the charging status first, and do not leave the charging site immediately.

　　Automobile manufacturers should assume the main responsibility for ensuring the safety of automobiles from the source.

　　Lin Cheng said that car manufacturers should first strictly follow the electric vehicle development process and various national mandatory standards, and conduct mass production and sales after full testing and verification.

The second is to optimize the battery system with better quality, and strengthen the monitoring and maintenance of the battery during use, especially for vehicles that have had an accident, it is necessary to focus on the battery detection.

　　"Automotive companies should focus on improving the after-sales service and technical specifications of electric vehicles." Lin Cheng believes that after consumers buy cars, auto companies should inform consumers about the correct charging and use methods through after-sales service consultants or manufacturer customer service personnel, and strengthen the support for new vehicles. Use training for energy vehicle owners to avoid abuse.