Summer hot weather how to prevent battery car spontaneous combustion

At 4:27 a.m. yesterday morning, an electric car on the first floor of the 30th floor of Zuojiabang Community, Wangjiawan, Yuelu District caught fire and spread to residential buildings. After the fire broke out, Yueshan District Fire Brigade squadron Shanshanmen immediately dispatched two water tank fire trucks, 14 commanders rushed to the fire site, rescued 14 people surrounded by fire.

At 4:27, the squadron of Shanshanmen squadron immediately rushed to the place of fire to get rescue after receiving the fire. At 4:35, the fire brigade arrived at the scene. At this time, the low-rise corridors and corridors of the residential buildings were filled with fire and smoke, and some residents were unable to evacuate. As the fire is getting bigger and bigger, the smoke is getting thicker and the trapped people may be at risk of being at any time. According to reports, the fire was caused by the charging of electric vehicles. The residential building had a total of 5 floors, and the residents most affected were the residents on the first and second floors. On the second floor, a resident had 5 people in his family. Because he could not withdraw, a man was shirtless and called for help after the security net. Fire officers and soldiers immediately divided into several groups, a group quickly took out water guns to extinguish fire, a group was equipped with relevant equipment to enter the building to search for and rescue trapped persons, and one group used a ladder to rescue trapped persons. At the same time, fire fighters are still on the scene to raise the cordon, prohibiting unrelated personnel from entering the scene.

Ten minutes later, the open fire in the residential building was successfully extinguished. Subsequently, several trapped people were successfully rescued. According to statistics, during the fire fighting and rescue mission, fire fighters rescued a total of 14 trapped people, including several elderly people and children. Due to the timely arrival of firefighters, the fire did not cause casualties.

At 5:25, the fire was completely extinguished. A firefighter said that in the process of saving people, they found that many citizens prepared wet towels, wet quilts to save themselves, and some even used wet towels to plug the door. “This shows that the residents' awareness of fire and self-help The level has improved significantly."

Why do hot summer weather easily cause the battery car to ignite?

“A lot of dealers don’t pack the battery, because the battery box is installed too tightly and the cables are crossed or even pressed. After long-term use of friction, it will cause short-circuit heating and burning. In high-temperature weather, the battery car will easily appear. Spontaneous combustion." Zhang engineer said.

There are two types of batteries for electric vehicles in the market. One type is a lithium battery. A lithium battery will explode when it encounters an open flame. However, the cost of a lithium battery is high and the safety is unstable. Therefore, the market share of lithium battery electric vehicles is low. The second type is a lead-acid battery. A lead-acid battery is a valve-controlled battery, and the interior is not completely sealed. Even if the internal temperature of the battery is high and a large amount of gas is generated, the internal pressure of the battery is increased, but after these gases are accumulated to a certain extent, Will be released through the vent hole, no explosion.

So, how to prevent spontaneous combustion of electric vehicles in hot weather , Zhang engineers have two suggestions:

First of all, after riding in hot weather, you should put the car in a cool place, wait for the car and battery temperature down, and then charge the battery;

Secondly, the use of long-term vehicle lines is prone to ageing. It is recommended that users should regularly check the maintenance points within half a year to one year.