The utility model relates to an AFE-based battery
management system, which comprises a battery
equalization driving circuit and an MCU unit, the battery
equalization driving circuit comprises an AFE
chip, a current balancing circuit, a charging control enabling circuit and a discharging control enabling circuit, the AFE
chip is responsible for converting analog signals such as
voltage, current and temperature of a battery into digital signals, and the MCU unit is responsible for outputting the digital signals. The MCU is connected with the AFE
chip through an I2C
bus, the MCU can conveniently read battery data collected by the AFE chip through the I2C
bus and issue a control instruction according to needs, and meanwhile, due to the design,
software deployment is also facilitated, and through coordinated control of the AFE chip and the current balancing circuit, the battery data can be further processed by the MCU, so that the service life of the battery can be prolonged, and the service life of the battery can be prolonged. And high-efficiency
equalization of each single battery in the
battery pack is realized through the internal current balancing circuit and the external current balancing circuit, so that each single battery can work in an optimal state, thereby improving the overall performance of the
battery pack and prolonging the service life of the
battery pack.