Recently, a fire broke out in front of a residential building in Wuxi, Jiangsu Province. The smoke in the building once caused a death and an injury, and several electric cars that were being charged were burned. The reason was that the electric car was overloaded and the electric box caught fire!

When does electric vehicle fire generally occur?

According to past cases, electric vehicle fire accidents generally occur when charging at night. Many people are recharged in corridors. This time period is often when people are asleep. Even if they are found, there is often no time to escape.

The electric car was placed inside the corridor and cut off the escape route directly. The experiment of burning electric vehicles proves that as soon as electric vehicles are burned, poisonous smoke will quickly spread upwards, which will soon lead to a state of poisonous smoke in the entire building, which can easily result in casualties and even group deaths and injuries.

Reasons for frequent fires in electric vehicles

Internal reason

Line aging

Electric vehicles have been used for a long time, and the connection routes in cars are prone to aging and short circuits. If there is a short circuit in the wires inside the car and the external temperature is too high, combustion can easily occur.

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The use of long-term vehicle lines is prone to ageing. It is recommended that users should regularly check the service points at half-year to one-year intervals. In addition, after riding in hot weather, you should put the car in a cool place, wait for the temperature of the car and battery to come down before charging.

Battery short circuit

General electric cars spontaneously ignite, people can easily attribute the reason to the battery.

Take lead-acid batteries, even if the battery internal temperature is high, produce a lot of gas, it will be released through the exhaust hole, so it will not easily explode. Unless the battery has a long service life, the internal circuit is easily short-circuited, causing spontaneous combustion.

Another reason is that the battery installation is not regulated. After long-term use of friction, it will cause short-circuit heat and cause the battery to burn.

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According to technical standards, ordinary electric car battery life of 1.5 years -2.5 years, it is recommended that users regularly replace the battery, and be sure to go to regular stores to buy matching the battery, do not choose inferior battery.

Charger does not match

Using an unmatched charger may also cause the electric car to catch fire. Nowadays, many households have more than one electric vehicle, and chargers of different brands of electric vehicles must not be mixed. This will not only damage the electric vehicle battery, but also bury potential safety hazards.

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Different brands of chargers do not mix, if the charger is damaged, please go to a regular shop to purchase.

External causes

Too much charge

Excessive charging is also the main cause of spontaneous combustion of electric vehicles.

In general, an electric vehicle can supply eight hours of electricity to meet the needs of users. In actual situations, many users simply charge the electric car overnight to save time, charge for 12 hours, or even longer, which will reduce the battery life.

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To ensure the charging time of the electric vehicle, when the battery discharges 70%-80% , it is charged in time. It is generally 6-8 hours for charging in the summer and 8-10 hours for charging in the winter . The battery should not be over-discharged.

Voltage instability

When multiple electric vehicles are charged at the same time, it will lead to unstable voltage and cause safety accidents. In addition, some people like private cable charging, but also lay potential safety problems.

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Do not pull the cable privately, charging at the regular electric vehicle charging station.

Charging environment

Many users do not have a dedicated electric vehicle charging station at their residences, so they can only store electric vehicles in stairwells, walkways, or push electric vehicles into rooms for charging. Once a fire occurs in an electric vehicle, flames and heavy smoke will block the building’s safe exits and escape routes, causing casualties and even group deaths.

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Charge in stairwells, aisles, or room interiors to eliminate potential safety hazards.

The information in this article is from the Internet and is edited by the editor.