How to prevent lithium battery explosion?

Basically, the explosion of lithium batteries is caused by the heating of the battery caused by the short circuit, and the reasons for the short circuit are overcharge, over discharge, direct connection of the positive and negative electrodes, and electrolyte leakage. Therefore, in the design of lithium batteries, the following points can be started:

1. It is forbidden to overcharge the battery above 4.2V;

2. It is forbidden to over-discharge the battery below 2.75V;

3. Install an explosion-proof valve on the metal shell;

4. Prevent short circuit during the process.

The best way is of course to have a battery protection circuit board design. Although this will increase the manufacturing cost of lithium batteries, it is necessary for the safe use of lithium batteries. This design is inevitable for all the products of formal lithium battery manufacturers.

Will the lithium iron phosphate battery explode?

Lithium iron phosphate battery is currently the safest cathode material for lithium ion batteries. Oxygen is difficult to precipitate in its olivine structure, which improves the stability of the material. The lithium iron phosphate battery pack has undergone strict safety tests and will not explode even in a traffic accident.

When the lithium iron phosphate battery is charged and discharged, because the iron ion has a weak oxidation ability and will not release oxygen, it is naturally difficult to undergo a redox reaction with the electrolyte, which makes the charging and discharging process of the lithium iron phosphate battery in a safe environment. The PO bond in the lithium iron phosphate crystal is stable and difficult to decompose. Even at high temperature or overcharge, it will not collapse and heat up like lithium cobalt oxide or form strong oxidizing substances. Therefore, the lithium iron phosphate battery has good safety. .