As the most common chemical energy storage power source in our lives, the safety of lithium batteries is our eternal concern.

　　Even if we do a lot of safety designs for lithium batteries, it is still difficult to avoid thermal runaway caused by abuse.

　　Thermal runaway means that the heat production rate is much higher than the heat dissipation rate. A large amount of heat accumulates inside the lithium battery, causing a rapid rise in temperature, causing the diaphragm to shrink and melt, and the positive and negative active materials decompose and other spontaneous exothermic reactions, which eventually cause lithium The battery catches fire and explodes.

　　Small lithium battery packs have only a few cell units, so the chance of thermal runaway spreading from the problematic cell to other normal cells is relatively low.

　　Electric vehicle battery packs are much more serious: the cells are housed in a sealed metal box and cannot emit waste heat. When one cell is hot enough to ignite the electrolyte, the remaining cells will quickly follow up.

　　A complete thermal management system for lithium batteries is of great benefit to lithium batteries.

　　Lithium-ion battery (LIB) has become the main energy storage solution in modern social life. Among them, lithium iron phosphate batteries are a perfect replacement for lead-acid batteries, and they are the first choice for grid-connected peak shaving, off-grid energy storage, photovoltaic energy storage, UPS, data center and other industries.