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This paper proposes a novel equalization method with defective-battery-replacing for series-connected lithium battery strings. This method can not only provide good equalization for all the cells, more importantly, it can replace defective battery in the pack, so that the whole pack can still be used without being affected by the defective battery. In this way, the battery pack's service life can be much longer than other ordinary equalization methods do, and the pollution caused by scrap batteries can be greatly reduced. The stabilization and effects are both satisfying proved by simulation and experimental results.
Du et al. (Tue,) studied this question.