China has a large number of electric vehicles, and the social ownership is also very high. Take Quzhou, Zhejiang Province as an example, the per capita number of electric vehicles is close to 2: 1. Fires often occur in the charging process of electric vehicles, which are mainly caused by short circuit of their own electrical lines, overload of charging lines, battery failure of electric vehicles and so on. Although the new safety technical standards for electric vehicles have been officially implemented in China, it will take some time to promote product upgrading. At present, there are still a large number of electric vehicles made of flammable and combustible materials such as plastic and polyurethane. In addition, in order to maximize profits, individual production and sales enterprises cut corners in production and sales, or even replace unqualified parts or manufacture inferior brand electric vehicles, which seriously affects the safety of electric vehicles.

Through daily fire supervision and inspection and fire case analysis, it is very common for many car owners to park their electric cars in stairwells, hallways, aisles or near safety exits for temporary convenience, and some even drive them from home? Flying line? Go to the parking place to charge the electric car. Once the electric car catches fire, toxic gas will flood the entire evacuation passage and nearby residents' homes in a very short time. If electric vehicles are illegally parked in public gathering places or group rental houses, it will easily cause heavy casualties. In recent years, there have been many major fire accidents in a rented house in Sancun, Nanjie, Daxing District, Beijing, resulting in 18 deaths and 24 injuries. The cause of the fire was that the power cord of the electric vehicle was short-circuited, and the surrounding combustibles caught fire and stopped in the lobby on the first floor.

The fire accidents of electric vehicles in recent years are analyzed. Most of the owners are urban-rural fringe, urban village residents or migrant workers, and some are even students. This group of people have a strong demand for the daily use of electric vehicles, but at the same time, they don't know enough about their fire risks, and they don't really grasp the requirements of relevant laws and regulations, and they also lack the knowledge and skills of electric vehicle fire prevention, fire extinguishing and self-help in fire. For example, on May 5, 20 19, an electric bicycle broke down and caught fire in a self-built house in Xilong Village, Yanshan District, Guilin City, Guangxi Zhuang Autonomous Region, killing 5 people and injuring 38 others, including 5 students from Lijiang College of Guangxi Normal University and 24 others.

The fire safety supervision of electric vehicles is a whole chain work involving production, sales and use. Although the fire safety problem of electric vehicles is directly reflected in the form of fire, it is difficult to rely on one or two departments such as fire rescue agencies? Radical cure? The role needs the departments of industry and information, public security, housing construction, market supervision, fire rescue, emergency management, planning, comprehensive law enforcement and so on to carry out comprehensive management of the whole chain. As far as the current situation is concerned, many departments still only pay attention to the daily supervision of electric vehicles within their respective responsibilities, without exchanging information and establishing a normal linkage mechanism, resulting in low efficiency and frequent comprehensive supervision of electric vehicle fire prevention. Solve the problem with half the effort.