Li Ion Battery Pack 7.4 V Fire Retardant material

- Apr 04, 2017 -

Let's take a look at what gas is released from the inside of the lithium ion battery after it is out of control. Of course, due to the composition of each battery, the results of the chemical state are different, the release of the gas are different. Usually, these gases are flammable, when the heat out of control caused by the rapid rise in the temperature of the battery to a certain extent, it is possible to trigger combustion. Here with a 40Ah NCM/C soft package battery as an example, the electrolyte is LiPF6/EMC/DEC/EC. In the case of full power, through the acupuncture out of control, so as to collect and analyze the release of gas composition. The results show that the released gas components mainly include:          

EMC: methyl ethyl carbonate          

DEC: two ethyl carbonate          

EC: ethylene carbonate          

Benzene: benzene          

Toluene: toluene          

Styrene: Styrene          

Biphenyl: biphenyl          

Acrolein: acrolein          

CO: carbon monoxide          

COS: carbonyl sulfide          

Hydrogen fluoride: This is hydrogen fluoride          

Some of these substances are gases, some of which are volatile liquids. The first three kinds of substances are the evaporation of the electrolyte itself, the latter is a new material in the process of thermal runaway. All of the above substances have a certain degree of toxicity, at a certain temperature are flammable.

battery crush up will release evaporational and flammable gas, how to control and minimized to the lowest level is safe for people to use