Lithium battery safety is always plagued the industrialization of lithium battery is an important issue in recent years, exposure of the battery explosion, without exception, are caused by the use of lithium batteries, compared with other types of batteries, which is made of lithium battery materials and technology The special nature of the decision. To this end, we should understand the knowledge of lithium battery explosion, we try to explain from the following three aspects.

What is a battery explosion?

GB standard, the battery within any part of the solid material instantaneous discharge, pushed to the lithium battery 25cm above the distance known as the explosion. The method of identification in the experiment is to cover the experimental cell with a circular mesh so that the battery is in the center of the circle, that is, 25cm from any side of the grid, and if the solid part of the experiment is not covered by the screen, the battery is not exploded. Here on the "network" has a specific indication: the line with a diameter of 0.25mm soft aluminum wire, the network density of 6 to 7 root / cm.

Second, how to prevent lithium battery explosion?

All the lithium battery explosion is caused by the short circuit caused by the heat caused by the battery, and cause short circuit and there are overcharge, over discharge, positive and negative direct docking, electrolyte leakage and so on. Therefore, in the lithium battery design, you can proceed from the following:

1, prohibit the battery overcharge to 4.2V or more;

2, prohibit the battery over discharge to 2.75V or less;

3, in the metal shell fitted with explosion-proof valve;

4, the process of short circuit prevention.

The best way is of course to have a battery-protected circuit board design. Although this will increase the manufacturing cost of lithium batteries, but the safe use of lithium batteries is necessary, all the regular lithium battery manufacturers products are inevitably the design.

Third, the polymer lithium battery will explode?

Polymer lithium battery is a flexible packaging and polymer electrolyte made of a lithium battery products, under normal circumstances, the use of storage will not explode, unless the strong destruction of human lead to short circuit.

In order to reduce the occurrence of explosion, polymer lithium batteries are more and more occasions to get the application, although the lithium battery to replace other types of batteries are still in progress, but in the lithium battery type, the polymer lithium battery has begun to replace in some areas Ordinary lithium battery.

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