BATTERY EQUALIZATION CIRCUIT, METHOD FOR CONTROLLING BATTERY EQUALIZATION CIRCUIT, AND UNINTERRUPTIBLE POWER SYSTEM

摘要

This application provides a battery equalization circuit to resolve a problem of insufficient charging or discharging of some batteries due to differences between a plurality of batteries in a battery group. Equalization sub-circuits of the battery equalization circuit each include a battery cell, a first bidirectional switch, and a second bidirectional switch. Battery cells of the plurality of equalization sub-circuits are connected in series. When a strobe terminal of the first bidirectional switch receives a turning-on signal, the first bidirectional switch is turned on and couples the positive electrode of the battery cell to a first terminal of an energy storage device. When a strobe terminal of the second bidirectional switch receives a turning-on signal, the second bidirectional switch is turned on and couples the negative electrode of the battery cell to the second terminal of the energy storage device.