Recently
Cases of e-bikes catching fire are not uncommon
Let's take a look
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Cautionary Cases
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01
In the early morning of April 7, 2023, a fire broke out in a small area in Fengtai District, Beijing, resulting in two deaths and one injury.
02
On October 8, 2021, in a community in Haizhu District, Guangzhou City, Guangdong Province, a man carried the lithium battery of an electric bicycle into the elevator, and the battery suddenly deflagrated, resulting in 90% of the man's multiple flame burns all over his body, and the man unfortunately passed away on November 3, 2021.
One
「 What are the common causes of lithium battery fire and explosion 」
Overcharging and overdischarging
When overcharged, lithium ions accumulate in large quantities at the negative electrode, potentially forming lithium dendrites, which can puncture the diaphragm and cause internal short circuits. Over-discharge, on the other hand, will damage the internal structure of the battery and reduce the stability of the battery.
External force damage
The battery is squeezed, punctured, etc., which will directly damage the structure of the battery, resulting in a short circuit. Especially in some collision accidents, the lithium-ion battery is violently impacted, which can cause a fire instantly.
Manufacturing defects in the battery
During the production process, if impurities, uneven electrode coating, or damage to the separator are involved, it may lead to a short circuit inside the battery. A short circuit causes an instantaneous increase in the current, generating a large amount of heat, which can lead to danger.
Two
"What are the signs of a battery explosion?"
Three
「 How to extinguish lithium battery fire 」
Be careful
When a lithium battery catches fire
Dry chemical fire extinguishers can only extinguish peripheral flames
It is not effective in preventing the thermal runaway of lithium batteries
Extinguish the fire with water
It is the first choice for emergency treatment of lithium battery fire
Highlight the point
Methods of extinguishing fires with water
Because there is no risk of electric shock
If a lithium battery with AC plugged in catches fire
Otherwise, there is not only a risk of electric shock
And it will also be raised
Electrolysis of water due to 220V alternating current
and the resulting secondary fire
For your safety and the safety of others
Electric bicycles and batteries are not allowed in the building
Do not purchase substandard battery products
No illegal modifications to the battery
Waste lithium batteries must be
Scrap it in time and dispose of it properly
Do not store at home
Eliminating fire starts with you and me