The power group uses lithium-ion batteries. The charged lithium-ion batteries need voltage, discharge voltage, over-current, and short-circuit protection. In order to achieve the problem of the entire battery balancing charging and charging process, a section introduces any number of lithium-ion battery protection chips. The level array includes a battery protection function designed for a balanced charging lithium-ion battery protection board. Simulation results and industrial applications show that the protection board has the advantages of complete protection functions, stable operation, high cost performance, and charging error balance less than 50mV.

　　Commonly used equalization charging techniques include: constant shunt resistance equalization charging, switching shunt resistance equalization charging, average battery voltage equalization charging, switched capacitor equalization charging, buck converter equalization charging, inductance equalization charging, etc. When lithium-ion batteries are charged in series, each battery must be charged evenly, otherwise the performance and life of the entire battery will be affected during use. However, the existing single-chip lithium-ion battery protection chip does not have a balance charge control function, and the multi-chip lithium-ion battery protection chip balance charge control function requires an external CPU. Through serial communication with the protection chip (such as the I2C bus), the complexity and design difficulty of the protection circuit are added, the efficiency and reliability of the system are reduced, and the power consumption is increased.

　　The power group uses lithium-ion batteries. The charged lithium-ion batteries need voltage, discharge voltage, over-current, and short-circuit protection. In order to achieve the problem of the entire battery balancing charging and charging process, a section introduces any number of lithium-ion battery protection chips. The level array includes a battery protection function designed for a balanced charging lithium-ion battery protection board. Simulation results and industrial applications show that the protection board has the advantages of complete protection functions, stable operation, high cost performance, and charging error balance less than 50mV.