Many electric vehicle fire accidents are generally caused when charging, there are many reasons for the fire. Internal reasons: line aging: electric vehicles have been used for a long time, and the connection route in the car is easy to age and short circuit. If the wires in the car are short-circuited and the external temperature is too high, some things such as plastic materials are easy to burn. Once the gas produced by the fire is inhaled by the human body, it is highly likely to cause suffocation. Battery short circuit: Even if the internal temperature of the battery is high and a lot of gas is generated, the lead-acid battery will be released through the exhaust hole, so it will not easily explode. Unless the battery has been used for a long time, the internal circuit short circuit causes spontaneous combustion. Charger mismatch: Many families now have more than one electric car, and the mixed use of different brands of electric car chargers will bring damage to the electric car battery, and there will be safety risks. External causes:
1. Overcharging: In general, electric vehicles can be charged for about 8 hours to meet the needs of users. However, many users charge before going to bed in order to save trouble, charging for 12 hours or even longer, which will reduce the battery life.
2. Voltage instability: multiple electric vehicles charging at the same time, private wire charging, will lead to voltage instability, easy to cause safety accidents.
3. Charging environment: Many users often push electric vehicles into stairwells, walkways or push electric vehicles into the room to charge. Once a fire occurs in an electric vehicle, the smoke will block the safety exit and escape channel, which is easy to cause casualties. These reasons will cause the occurrence of electric vehicle fire, so we must pay more attention to: 1. When buying a battery car, pay attention to whether the electric vehicle has undervoltage, overcurrent protection and short circuit protection. 2. The charging time of the battery car should not be too long, it is best not to exceed 8 hours, so as not to overheat the charger due to too long charging time and cause a fire. 3. The battery car should not be parked in the stairwell, aisle or room indoor charging, will block the escape channel.
4. When going out, try not to put the battery car charger on the car to avoid damaging the internal line of the charger due to road turbulence and causing a fire when charging again.
5. Users try to avoid driving in rainy days and waterlogged sections to prevent water from entering the battery and motor, and short-circuit fire during charging.
6. Different brands of chargers are not mixed, and users should regularly go to the maintenance point for maintenance, and do a comprehensive inspection of the battery car to eliminate hidden dangers. Replace the battery must go to the regular shop to buy a matching battery. Safety must always bear in mind, safety first!