The inconsistency between series-connected batteries is a key factor affecting the high performance and lifespan of lithium-ion battery packs. Therefore, a battery balancing system is needed to achieve effective energy balance. Traditional battery balancing is mainly divided into three methods: P2C (Pack to Cell), C2P (Cell to Pack), and C2C (Cell to Cell). The C2C structure is complex and hard to control, while the other two have the issue of repeated balancing. To address this issue, this paper proposes a battery balancing system coupled with battery reconfiguration based on flyback transformation. In order to enhance the controllability of the battery balancing system, the topology of the balancing system adopts the C2P/P2C method, and the balancing direction can be switched according to the current situation during the balancing process. To avoid the problem of repeated balancing, each battery is connected in parallel with a bypass circuit based on battery reconfiguration. Through a series of simulation, it can be concluded that this battery balancing system has good robustness, solves the problem of repeated balancing, and the balancing efficiency has improved.
A Novel Battery Balancing Topology Coupled with Battery Reconfiguration
2024-10-10
1540582 byte
Conference paper
Electronic Resource
English
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