Is Lithium ion Battery Safe?
Recently, you must hear a lot of new energy car fire accident in variouse channels.
According to incomplete statistics, there have been more than a dozen electric vehicle fire accidents recently, involving passenger cars, passenger cars and other fields.
Since the beginning of this year, there have been 30 BMW spontaneous combustion incidents in South Korea, especially since the beginning of summer, related fire incidents have become more frequent, only since July occurred more than 10 spontaneous combustion. In South Korea alone, BMW has recalled 100,000 vehicles for the "engine self-ignition" incident, and since last year, BMW has recalled more than a million vehicles in Europe and the United States, in large part because of the hidden danger of engine fire.
Electric vehicles are safer than fuel cars when fire occurs.
First of all, there is a certain gap between the two detonation time, fuel vehicles will explode instantaneously, and electric vehicles have a reaction process, from fire to explosion has a certain time, can be reserved for the owner of a certain escape time, such as Tesla is 8 minutes, Wima car is 10 minutes.
In addition, electric vehicles through advanced sensor technology and mobile communication technology, in the beginning of a chemical reaction in the battery, the danger of early warning to the owner, the owner can have enough time to stay away from the electric vehicle is about to start.
Tracing the cause of electric vehicle ignition:
Speaking back to the electric vehicle fire accident, it is generally divided into several scenarios, such as charging burning, battery running or placing burning, collision burning or wading burning, the first of which is the most common. Battery safety can be boiled down to thermal runaway, in other words, beyond a certain critical point, the temperature rises uncontrollably in a straight line until the final combustion and explosion. Overcharge, overheating, short circuit, collision and other factors are the key factors leading to the thermal runaway of batteries.