The reason for the spontaneous combustion of electric vehicles is...

The weather is getting hotter and hotter, and the maintenance of electric bicycles has become particularly important. A few days ago, the author saw news about the spontaneous combustion of electric vehicles. Why do electric vehicles spontaneously ignite? How to prevent spontaneous combustion of electric vehicles? 　　 1. Spontaneous combustion accidents of electric vehicles are caused by short circuits in electric vehicles. According to a maintenance worker with many years of maintenance experience, the electric car itself is made of iron sheet. Although the wires are covered with rubber, they rub against each other during the driving process. After the rubber is worn out, the inner wire leaks out and the iron sheet Contact is equivalent to touching the positive and negative poles together, causing the inner line to short-circuit and catch fire. Not only that, when there are metal objects in the seat of the electric car, the metal objects will bump and rub during the driving, and they will hit the battery connection line without any protection. It can also cause spontaneous combustion.　　Preventive measures: It is forbidden to put metal objects in the car seat.　　 2. It is caused by overloading of electric vehicles.　　Electric vehicles use electric energy to provide power, mainly running on current circuits. Once overloaded, the tires will wear out and the friction will increase. If the motor gets hot, it may 'seduce' the circuit overload and heat, the circuit will soften, and the short circuit will cause spontaneous combustion.　　Prevention measures: It is forbidden to overload electric vehicles.　　 3. The line quality is not up to standard, due to aging, and virtual connection. In order to reduce production costs, some manufacturers cut corners and cut corners of the line core, the wire diameter is small, the quality is poor, the copper quality is inferior, and the connector quality is low. Increase the heat generation and cause a fire. In addition, the motor cable and power cable must be connected firmly when installing. It is necessary to use a soldering iron to solder, and avoid virtual connections as much as possible.　　Preventive measures: usually check whether the line is burnt and broken, and deal with the problem in advance. When the line has many connections and the core is black, it is recommended to change the line instead of letting the line become a 'fuse'.　　 4. The battery connection line is thin or caused by a virtual connection. Especially for closed cars and semi-closed cars, in order to pursue speed and strength, the motor power increases and the discharge current increases. When the battery connection wire is thin and cannot withstand its large current, it will 'self-immolate'. When the wire is ignited, the battery casing is made of plastic. It will also cause the battery to 'kill' together, causing a fire and causing danger.　　Preventive measures: When connecting the battery, try to use thicker copper wire and tighten the screws. Do not let the virtual connection spark. If the copper wire is not pressed firmly, please add a spring washer or a flat cushion to compress it.　　Don't let your electric car 'fire'. The temperature is getting higher and higher in summer. Be sure to maintain and check frequently to avoid spontaneous combustion accidents. The fire is merciless, and it is impossible to prevent it. Previous: How to charge an electric car is the most harmful electric car?