"New Energy Trend" public number report: With the occurrence of safety accidents caused by lithium batteries, all over the country has been stipulated in the form of legislation, prohibiting lithium batteries from entering high-rise buildings, and not allowing indoor charging, even in the cold north.
Human life is at stake, all for the safety of everyone's property and life, and there is nothing wrong with this. But there's a good chance that even greater dangers are brewing!
—— Lithium batteries are prohibited from entering the room for charging, which is likely to turn lithium batteries into bombs!
The following will be obscure, but please be sure to read it!
Do you know what harm lithium batteries will bring if they are charged below zero?
In principle, the process of charging a lithium battery is the process of lithium ions migrating from the positive electrode to the negative electrode. Under normal circumstances, lithium ions enter the graphite layer spacing of the negative electrode through the electrolyte to obtain electrons, but when the ambient temperature is lower than zero, the electrolyte inside the lithium battery becomes less active, the rate of lithium ions embedded in the graphite layer spacing structure becomes slower, and some lithium ions are not too late to be embedded on the surface of the negative electrode to get an electron, forming the base lithium, which is usually what we call lithium analysis.
This precipitated lithium is dead lithium, it will be irreversibly deposited on the surface of the negative electrode, this kind of dead lithium appearing on the negative electrode will not only greatly reduce the performance of lithium batteries, but also in the later use of lithium batteries in the process of slow growth into lithium dendrites, and eventually puncture the diaphragm, because the lithium dendrites are conductive, puncturing the diaphragm of lithium dendrites will lead to internal short circuits inside the battery, and the battery will explode and catch fire.
Seeing this, you should know what will happen to lithium battery electric bikes charged outdoors in the northern winter.
However, lithium batteries are not charged at low temperatures to fry, may be the whole winter you are to the lithium battery below zero degrees to charge it will not explode, because the growth of lithium dendrites is a certain amount of time, but it must be known that the lithium battery charged at low temperature is definitely an "untimed bomb" that does not know when it will explode!
With the implementation of regulations, in the north this winter, the vast majority of electric bicycle lithium batteries must be charged below zero in the cold, and perhaps these cars will become one "bomb" after another in the summer of next year, or autumn, or even winter.
It is likely that no one will mention how we banned the lithium battery of electric bicycles from charging indoors today, and there is no environment for lithium battery electric bicycles to be charged.
But is this the fault of lithium batteries?
Not always, the same use of lithium batteries as a power source of electric vehicles can spend one or two million yuan to the lithium battery pack to install a set of active heating system, first preheat, and then charge, and a lithium battery electric bicycle will spend on this how much budget? At least so far, many domestic electric bicycle lithium batteries do not even have low temperature detection and protection inside.
How helpless and ironic it is to know that the danger is approaching step by step, but there is no way to stop it from happening!
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