To improve the performance of existing safety control technology, we must first improve the safety performance of lithium-ion battery cells, which is especially important for large-capacity batteries. The separator with good thermal shutdown performance is selected. The function of the separator is to allow the passage of lithium ions while isolating the positive and negative electrodes of the battery. When the temperature rises, it is closed before the separator melts, so that the internal resistance rises to 2000 ohms, and the internal reaction is stopped.
When the internal pressure or temperature reaches the preset standard, the explosion-proof valve will open and begin to relieve pressure to prevent excessive accumulation of internal gas, deformation, and eventually the housing burst.