A highly-integrated and efficient commercial distributed EV battery balancing system

作者：Chen, Feng; Yuan, Jun; Zheng, Chaojun; Wang, Canbo; Li, Zhan^*

来源：IEICE Electronics Express, 2018, 15(8): 20180005.

DOI：10.1587/elex.15.20180005

• battery balancing system
• commercial
• EV
• highly-integrated
• specific IC

This paper focuses on the imbalance problem of serial cells in lithium-ion batteries applied in electric vehicles (EVs). In order to meet more strict requirements of size, efficiency, cost, and reliability in commercial application, a highly-integrated and efficient distributed battery balancing system is developed. In the system, each balancing node (BN) and its controller, a designed specific integrated circuit (IC), are independent, distributed and integrated in an IC-packaged module. Besides, a 50% state-of-charge (SOC)-aligned balancing strategy is proposed and applied. The experiment and commercial application results show the designed balancing system performs excellently in improving battery capacity and extending cycle life.

• 出版日期2018-4-25
• 单位浙江大学