Solar battery is now very important our lives. We need solar batteries to store the solar power energy. And Lithium iron acid battery is one kind of solar batteries
Lithium iron acid battery refers to the lithium ion battery with lithium iron phosphate as the positive electrode material. The cathode materials of lithium ion battery mainly include lithium cobalt, lithium manganese, lithium nickel, ternary material, lithium iron phosphate and so on. Lithium cobaltate is the anode material used in most lithium-ion batteries. The P-O bond in lithium iron phosphate crystal is stable and difficult to decompose. Even at high temperature or overcharge, it will not collapse and heat or form strong oxidizing substances like lithium cobalt acid, so it has good safety. It has been reported that a small number of samples were found burning in the actual operation of acupuncture or short-circuit experiments, but no explosion occurred. In the overcharge experiment, high voltage charging was used which was several times higher than the self-discharge voltage, and explosion was still found. However, its overcharge safety is much improved compared with that of ordinary liquid electrolyte lithium cobalt acid batteries. The peak value of lithium iron phosphate can reach 350℃-500℃, while lithium manganese and lithium cobalt are only about 200℃. The operating temperature range is wide (-20C--+75C), with high temperature resistance characteristics of lithium iron phosphate peak electric heat up to 350℃-500℃ and lithium manganese and lithium cobalt acid only about 200℃.
