New energy vehicles are "fire"!On average, 7 fire accidents per day, how should the owners prevent it?

Daily Economic News news, recently, several fires have made the safety of new energy vehicles ascended to the "cusp."

A few days ago, some netizens said that Tesla's sheet spray center in Suzhou was fired. The on -site pictures passed on the Internet show that there are a large number of burnt traces inside the sheet spray center. Several windows glass on the wall have been completely ruptured, and multiple vehicles parked in the sheet spray center are burned. Body skeleton.

In response, the relevant person in charge of Tesla China replied to the "Daily Economic News" reporter: "Suzhou sheet spray center has indeed caught fire, but the reason for the fire is still under investigation."

In fact, this year's fire -related fire -related incidents have been far more than this. Recently, the data released by the Fire Rescue Bureau of the Emergency Management Department in the first quarter of 2022 showed that the fires reported from various types of transportation from 19,000, of which 640 new energy vehicles, a year -on -year increase of 32%, which means that the average of more than 7 a day has more than 7 a day from more than 7 a day. New energy vehicle fire.

Once the news was released, it caused a public discussion on the safety of new energy vehicles. Compared with fuel vehicles, is the probability of fire in new energy vehicles higher? How should new energy car owners prevent problems before they occur?

The probability of fire is lower than that of fuel vehicles

Compared with fuel vehicles, the fire incident of new energy vehicles is more likely to cause public concerns.

On June 11, two new energy cars in Heyuan City, Guangdong Province spontaneously ignited during the charging process, and one of them was burned into a skeleton; on June 12, a new energy vehicle for two years in Zhuhai, Guangdong Province was in Shortly after charging, smoke fired; in late June, a new energy vehicle in Hefei, Anhui Province suddenly smoked spontaneously.

Wang Meng, an expert on the expert committee of the China Automobile Circulation Association, introduced to the reporter of "Daily Economic News" that the cause of the starting fire of new energy vehicles can be attributed to 5 points: aging battery components, external collisions, high temperature, battery heat out of control and high load use. Among them, more than half of the fire caused by electricity factors, and another major cause is an external collision fire.

"Many car owners will inevitably be bumped during driving during driving, and the power battery is generally installed in the chassis position. After bumping, it may be deformation but it is not easy to be detected, and the hidden safety hazards are buried." Wang Meng said.

However, many industry experts also told reporters that from the perspective of data, the current fire probability of new energy vehicles is actually lower than that of fuel vehicles. According to statistics from the Ministry of Public Security, as of the end of March 2022, my country's new energy vehicle ownership was 8.915 million. Based on this calculation, the probability of new energy vehicles in the first quarter of this year was about 0.72. Earlier, Sun Fengchun, an academician of the Chinese Academy of Engineering, quoted a set of data: In 2019, the probability of fire in China's new energy vehicle was 0.49) 0.26 in 2019, which is much lower than the fire probability of the fire vehicle by 10,000 %.

Not only that, according to a survey of AutoInsunge EZ, the proportion of cars was 15%in the 1.4 million fire accidents in the United States in 2020, about 200,000. Among them, there are more than 100,000 fuel vehicles, 16,000 hybrid vehicles, and only 52 pure electric vehicles. The agency calculates that the amount of fires in every 100,000 cars in combination with the amount of American cars is: 3,475 hybrid vehicles, 1529 fuel vehicles, and only 25 pure electric vehicles. Both.

Table: Every reporter Li Shuo (data source: AutoInsurance EZ)

“任何车辆自燃都存在一定的偶发性，并不能说哪种更危险。新能源产业发展备受关注，使得一些安全事故也被放大化。经过多年沉淀，动力电池技术持续更新，像比亚迪推出' The blade battery that can't be stabbed ', the 811 battery of the "Never Fire" in the Ningde Times ... The continuous launch of new technologies is committed to solving the safety pain points of new energy vehicles. With the cooperation, the new energy vehicle industry will move towards high safety and high -quality development tracks. "Yu Qingjiao, Secretary -General of Zhongguancun New Battery Technology Innovation Alliance, told reporters.

Zhang Xiang, Dean of the New Energy Vehicle Technology Research Institute of Jiangxi New Energy Technology Vocational College, also believes that the sales volume of new energy vehicles has increased rapidly in the past two years, the amount of preservation has increased accordingly, and the number of fire incidents has increased. As a new thing, it is easier to get attention, so the impression of the public has a higher risk of fire.

Expert suggestions: regular inspections to avoid long -term loss or overcharge

In the face of possible risks, what should new energy car owners pay attention to in daily use?

"In terms of car use, the first thing to do is to regularly check the" physical examination ", and periodic inspections and maintenance of vehicle lines, power batteries and motors to ensure that the vehicle lines are normal. Second Charging or long -term loss or long -term fast charging will affect the battery status and service life. Also, it is recommended to go to a regular 4S store after the vehicle has an external collision to ensure that the battery and other components may cause spontaneous combustion accidents. " In the Qing religion suggestion.

Picture source: Visual China

It is worth noting that excessive charging is the details that the owner is easy to ignore when using the car. "During the long -term cycle, lithium batteries will generate lithium branches crystals, and part of the falling off forming a 'dead lithium', and the other part is growing. Pingling the septum causes a short circuit of the battery. This process is very slow. But under special circumstances, for example, if the battery is over -charged, it will accelerate this process and induce spontaneous combustion. "Zhang Xiang told reporters. Because of this, some car companies are currently used to avoid over -charging vehicles by restricting the upper limit of charging. Zhang Xiang suggested that the owner should try to avoid excessive charging as much as possible to cause "dark injury" to the battery.

However, Zhang Xiang also said that the technical upgrade of new energy vehicles has been replaced rapidly. Previously, car companies still faced the dilemma of raw materials. In order to deliver new cars on time, some car companies may frequently change parts suppliers or change the corresponding technical solutions. Among them, there are some of them. There may be hidden technical safety hazards that have not been fully verified. To this end, he suggested that new energy vehicle companies attach importance to verification work when R & D technology or replacement of components to improve the reliability of products.

"After consumers buy a car, auto companies should use the after -sales service consultant or manufacturer customer service staff to inform consumers to charging and use the correct way to use them to cultivate the correct concept of car use. As a vehicle producer, automobile companies should fulfill their corresponding reminder obligations. "Sun Liqing, an associate professor at the School of Vehicle and Transportation Engineering of Beijing Institute of Technology, believes that the manufacturer should be informed by the manufacturer for detailed car attention.

Original title: New energy vehicle "fire"! On average, 7 fire accidents per day, how should the owners prevent it?

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