What causes lithium battery life short

　　Author ：Iflowpower – Portable Power Station Supplier

1. Overcharge and excessive discharge will cause permanent damage to the lithium ion battery, from the molecular layer, it can be intuitively understood that excessive discharge will result in excessive lithium ions in the negative electrode carbon to make the sheet structure Collapse, excessive charging will put too much lithium ion hard plug into the negative electrode carbon structure, but some lithium ions can no longer be released. 2, the non-suitable temperature will initiate other chemical reactions in the lithium ion battery to generate the compound we do not want to see, so there is a protective temperature-controlled diaphragm or electrolyte additive between a lot of lithium-ion battery positive and negative poles.

In the case where the battery is warmed to a certain amount, the composite membrane film is closed or electrolyte degenerate, the battery internal resistance is increased until the circuit is broken, the battery is no longer warming, ensuring that the battery charging temperature is normal. 3, the memory effect of the lithium ion battery: It is important to change from the positive and negative material itself. From the molecular level, the hole structure that houses lithium ions on the positive and negative poles will gradually collapse, blockage; from the chemical angle, it is a positive and negative material activity Passivation, a sub-reaction to form a stable other compound.

There is also a gradual peeling of positive electrode materials, in summate the number of lithium ions that can be moved freely during the charge and discharge process.