Lithium battery manufacturers to analyze the Tesla power lithium battery explosion is how powerful? Following the progress of society, lithium batteries are widely used in our lives, bringing us convenience, but also brought some trouble. Tesla lithium battery explosion problem, to avoid the lithium battery to become our side of the "bomb" is particularly necessary. Lithium battery manufacturers to analyze the Tesla power lithium battery explosion is how powerful.
Lithium battery manufacturers to analyze the Tesla power lithium battery explosion power how big?
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As for the power lithium battery fire or explosion Tesla has been more than once, but the explosion after the impact of the car that is just a movie inside the show. Under normal circumstances, even if it is a serious car accident, the car was hit to the ground, even if the car happens to be leaking oil, as long as it does not touch the open flame, it will not burst into flames or explode. Unless the car would have been flammable and explosive materials, otherwise it will not explode.
Tesla just listed, fire for a lot of time, fast acceleration cruise time, etc., have attracted a lot of fans to Tesla, this and its lithium battery structure characteristics are inseparable, using cylindrical lithium batteries, although in the speed and range can reflect the advantages, but the space inside the car sacrificed a lot, and extremely unstable, the collision fire has appeared many times.
In the early hours of November 3, 2016 EST, a Tesla ModelS electric car was involved in a serious accident that caused the entire vehicle to burn. At the time, the ModelS car slammed into a large tree, quickly generating sparks that triggered an explosion of the lithium battery inside the car, which in turn caused the entire vehicle to burn into a huge fireball.
The Tesla Model S crashed into a lamppost and disintegrated in half while driving at high speed in Los Angeles, and then the lithium battery caught fire and destroyed the car. Tesla's battery supplier is Japan's Panasonic Group, which uses an array of thousands of lithium cobalt-acid batteries to power its electric vehicles. However, such a design makes the vehicle in a collision, increasing the possibility of impact on the lithium battery array, which in turn causes the battery cells or modules easily displaced, resulting in parallel and series connection with the wire off and short circuit caused by fire.
The high-density lithium battery used in Tesla is very likely to catch fire and even explode when the vehicle is in an accident. Focus on the safety of lithium batteries do not let Tesla and other "bombs".
Causes of lithium battery explosion are the following
1. Temperature. There are many factors affecting the safety of lithium batteries, including battery materials have an important impact on the safety of lithium batteries, because battery materials are generally thermally active, when the battery temperature continues to rise, its internal thermal reaction will be many, when the heat can not be dissipated in a timely manner, it is easy to cause battery safety accidents, so the choice of lithium battery anode material has an important impact on the safety performance of the battery.
2. Manufacturing process. Battery manufacturing process is also an important factor affecting the safety performance of the battery, of which there are three main factors, respectively, the positive and negative capacity ratio, paste uniformity control, coating quality control.
In the process of use, high current (external short circuit, internal short circuit) resulting in overheating caused by the explosion; rupture may also make the unstable negative electrode after charging (deposited with lithium) contact with air resulting in a large amount of exothermic / or negative capacity deficiency; overcharge / over discharge can also cause the explosion of lithium batteries.
Summary: Tesla's battery pursues energy density, ignoring the safety factor. Over the years on the Tesla spontaneous combustion, collision fires and even explosions have been common news, if you want to further enhance the energy density, will pose a greater challenge to battery safety management.
Translated with www.DeepL.com/Translator (free version)
