Root causes of soft bag polymer lithium ion batteries combustion explosion

　　Author ：Iflowpower – Portable Power Station Supplier

The soft bag polymer lithium-ion battery is a lithium ion battery product made by recovering soft packaging and polymer electrolyte. The use of normal environment is not exploded unless the money is strongly pulverized. The current polymer lithium-ion battery is a soft bag battery, and the aluminum plastic film is recovered.

When the internal recovery of an organic electrolyte, the liquid is very hot, because the aluminum-plastic film polymer battery recovers solid or colloidal state without leakage Liquid, just natural cutting. However, any work is not absolute. If the instant current is large enough, short circuits, the battery spare or burst is not possible, and the emergence of mobile phone remote quiet board is more caused by this environment.

In order to eliminate the emergence of explosion, the polymer lithium-ion battery is increasingly available, and the lithium-ion battery is alternative to other example batteries, but in the example of lithium ion battery, the polymer lithium ion battery has begun. Instead of ordinary lithium ion batteries in the scale. Conditions of combustion of polymer lithium ion battery exploding combustion Strong oxidant, rendering gas with electrolytes (O2).

When the electrical core voltage reaches nearly 5V, the increase in temperature in the core and the gas pressure is used, and most of the electric cells will be burned or exploded due to internal short circuits. 2, the battery is heated with high temperature, when the battery cell is heated, the electrolyte will vaporize and also analyze, the internal pressure of the battery is increased, and the film inside the battery core is approximately melted to cause a short circuit inside the battery, and the cathode When the material is covered with the inevitable temperature, it will appear from catalytic resonance, showing burning. 3, the battery is shorted, the battery is overcharged, and it is short-circuited.

This is probably caused by the battery. Problems in the above aspects, this is an important adoption of care board, PTC, special charger, and fuses to receive the battery. The middle care board is the overchard of the battery.

After overplaying over-flow, the PTC is a second-level care for the electric core when the electric core is short-circuited when the battery is overheated. The special charger is The charging current and voltage of the battery are restricted, and the fuse is now useful. Its important use is to completely cut off the end and the external circuit when the battery voltage or current is abnormal, so that the battery is not used again.

, With guaranteed cells that will not present serious security messages. How to prevent polymer lithium ion battery explosions? All lithium-ion battery explosions are caused by fever caused by short-circuited batteries, and the cause of short circuits has passed, over-placed, positive and negative direct docking, electrolyte leaks, etc. Therefore, in the lithium ion battery design, you can start from the following points: 1, the restraint of the battery is over 4.

2V; 2, the restraint of the battery is over 2.75V; 3. Pack the explosion-proof valve on the metal housing;.