Active balancing charging module with continuous and controllable isolation for battery management system

摘要

The battery balancing management is important since it has a crucial role in the operation of power battery management system. The objective of battery balancing management is to make the battery capacity of each single cells consistency, extend battery cycle life and improve battery usage efficiency. However, how to choose balanced approach and design balancing module that optimize the performance of the battery pack is the vital issue of the battery management system. This paper proposes an active balancing charging module with continuous and controllable isolation on the basis of related research work. The structure and principle of active balancing charging module are analyzed and explained in details. Battery testing system and Li-ion power battery are used for testing. The experimental results show that the active balancing module performs well in charging process compared with the battery pack without balancing and the efficiency of the module is high. There is both theoretical and practical value of the research.