The high-energy density LiFePO4 battery is widely used in various types of electric vehicles, such as pure electric sedans, pure electric buses, pure electric specialized vehicles (logistics vehicles), hybrid buses, etc. it is also widely used in industrial machinery and equipment, mobile communication emergency power supply, and other fields. it has the following performance advantages: higher energy storage capacity, higher integration, more intelligent system management module, warning reminder function. equipped with safety protection measures such as short circuit protection, overcharge protection, over discharge protection, overcurrent protection, temperature protection, etc., to ensure the safety of the battery during use. the energy density is high, reaching around 200Wh/kg, effectively improving the range and driving ability of electric vehicles. high safety performance, with characteristics of over charging resistance and high temperature resistance, it can work normally even in high temperature environments. long cycle life, due to the characteristics of using positive electrode active substances as positive electrode materials, the service life can reach more than 10 years.