Lithium-ion batteries because the safety of lead-acid batteries to be slightly worse, the critical performance of flammable and explosive, resulting inflammable and explosive essential for the following four reasons.
1, lithium-ion batteries internal short circuit.
Lithium-ion battery itself structure or production process defects lead to the pole lug insertion, external puncture, extrusion, positive and negative diaphragm package surplus too slight, burr, diaphragm folding and other causes. This situation, primarily due to the quality of the battery manufacturer’s products and the use of car users on the lithium-ion battery caused by physical damage.
2, lithium-ion battery external short circuit.
Necessary due to improper use or unscientific assemblies, such as retrofitting the outer metal box of the battery pack did not consider the pole ear insulation, lithium-ion battery fixing measures are not reasonable, the shaking of the battery pack during the use of the enthusiast is also likely to cause the battery external insulation protective film breakage or broken connection wire skin, eventually leading to short-circuit burning or explosion.
3, the fire and explosion caused by overcharging.
This is the most dangerous factor, generally due to enthusiasts do not use the current and voltage matching charger as required, thus destroying the protection circuit, resulting in the protection circuit does not work overcharge protection purposes, because most enthusiasts charging is often not limited to charge, this situation is not fried are difficult.
4, the battery production process using raw materials is not qualified.
Raw materials are not qualified, maybe overheated under the calibrated voltage and current, which can lead to accidents, which are generally due to the poor quality of lithium-ion batteries produced in small workshops, due to enthusiasts buying lithium-ion batteries, ignore the brand and regular manufacturers, such accidents occur in the RV.
What happens if the lithium-ion battery overheats?
If the lithium-ion battery overheats, hisses or bulges, immediately remove the device from flammable materials and place it on a non-flammable surface. If possible, remove the battery and leave it outside to burn out. You can also leave the device outside for at least six hours.
Small lithium-ion fires can be treated like any other explosive fire. Use a foam extinguisher, carbon dioxide, ABC dry powder, graphite powder, copper powder, or baking soda (sodium carbonate) for best results. Halon is also used as an extinguishing agent.