What cause lithium battery drum kit?
1. The safety valve opening pressure is too high, or safety valve block. When inside pressure increases to a certain extent, valve cannot open normally] and cause bulge.
2, the floating charge voltage is set too high, the charging current is large, causing the precipitation of O2 on the positive electrode plate to speed up, but it is too late to compound in the negative electrode, and the temperature inside the battery body rises very quickly. When the exhaust gas is not enough, the pressure reaches a certain level, so that VRLA the battery pack is deformed.
3, VRLA battery charging operation, especially in the series battery pack, if the battery pack is overcharged, if there are poor quality batteries, there will often be internal gas compounding and other phenomena, resulting in bulging.
4, because VRLA battery is a poor liquid design and leave a reserved way for gas combination, if there is a "rich liquid" phenomenon happened it will block O2 diffusion to negative electrode, reduce O2 recombination rate and increase inside pressure.
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