New energy vehicle fire prevention knowledge point

Release time:

2023/05/30

New energy vehicles as an environmentally friendly and energy-saving means of transportation
by more and more people's attention and favor
But the ensuing
It is a continuous fire incident of new energy vehicles.

Causes of fire of new energy vehicles
The main factor in the fire of new energy vehicles comes from the battery of the vehicle. Because the battery is affected by factors such as impact, extrusion, and overcharging, a fire may occur.

Battery thermal runaway
Compared with other batteries such as lead-acid batteries, lithium-ion batteries have higher energy density and higher voltage, but their electrolyte components and electrode materials are more likely to burn. Therefore, the probability of spontaneous combustion of lithium-ion batteries is greater.

New energy vehicle fire prevention knowledge point
The spontaneous combustion of the battery is mainly caused by the thermal runaway of the battery. The battery has phenomena such as internal short circuit, high current discharge, overcharge, etc., and a large amount of heat will be generated inside the battery, resulting in an increase in temperature. When the battery system reaches a higher temperature, it will stimulate the physical and chemical processes inside the battery, which will cause the battery to run out of control. In addition, the electrolyte is flammable, and spontaneous combustion of the car may occur.

How to prevent new energy vehicle fire?
When using the car daily, you should grasp the charging time and charging frequency, and charge the battery in accordance with the instructions to avoid overcharging, power loss, or long-term fast charging.

If the vehicle has an external collision, it is recommended to go to the 4S shop for safety inspection to ensure that the battery and other components are intact. If there is no bump, the vehicle line, power battery and motor should be checked and maintained regularly to ensure that the vehicle line is normal.

Under high temperature and sunshine, the temperature inside the car is high, and flammable and explosive materials placed in the car may become the culprit of the fire, so please do not place lighters, perfumes, sunscreen sprays and other items in the car. In addition, reading glasses and other items that can form a convex lens to focus light should not be placed in the center console of the car, instrument panel and other places that are easily exposed to the sun.

Try to choose a cool place for parking. The advantages and disadvantages of the parking lot are: underground parking lot> indoor parking lot> shade of high-rise buildings> tree shade> exposed position dirt floor> exposed position cement floor. If the parking position is selected, the sun protection work will get twice the result with half the effort. For cars with sunroofs, you can choose to slightly open the sunroof to achieve air circulation inside and outside the car to reduce the temperature inside the car.

New energy vehicle fire how to do?
01 Do not put out the fire by yourself
Once a new energy vehicle ignites spontaneously, the fire is very fierce, and most of the car fires occur in the rear battery part, which requires power outage treatment. It is too professional. It is not recommended that personnel put out the fire by themselves, and it is not recommended to follow the traditional fire extinguishing method of fuel vehicles. Control the vehicle to avoid casualties.

02 away from the vehicle timely alarm
After discovering that a new energy vehicle is on fire, car owners and pedestrians should stay away from the vehicle as soon as possible, call the fire alarm number 119 after arriving at a safe area, and explain the brand and model of the vehicle to the fire rescue personnel. The fire rescue personnel will handle it and do not put out the fire by themselves.

03 easy to reignite do not turn back
In actual fire fighting operations, new energy vehicle batteries are prone to re-ignition. Even after the fire is extinguished, it is still recommended that car owners do not return to the car to avoid small losses.

04 Battery combustion produces toxic smoke
In the process of fighting, to prevent the inhalation of toxic gases such as hydrogen fluoride and hydrogen cyanide emitted after the battery burns.