A Novel Space Active Balance System for Lithium-ion Battery Packs

In regard to the balance management for high capacity Lithium-ion battery packs in space, an active balance circuit based on the topology of multi-winding transformer is proposed in the article. The circuit can control the magnitude of the balance current by fixed duty cycle control, to achieve charge balance function. The circuit can effectively improve the balance speed of the high-capacity battery packs, meeting the requirement of balance function and reducing the energy loss of the battery packs, Meanwhile, increasing the service life of the battery packs. The novel balance system can realize modular and scalable. A Simulink model was built for the program. The simulation results prove the correctness and effectiveness of the circuit. (paper)