A fuzzy-controlled active state-of-charge controller (FC-ASCC) is presented to adaptively program the charging behavior of the Li-ion battery. The proposed FC-ASCC can provide two charging modes (SM and CM) instead of the usual CV mode for improving the charging trajectory of the Li-ion battery. A fuzzy-controlled strategy is built with a set of membership functions to prescribe the charging process in a safe charging region. A design example is conducted with simulation and experiment for accessing the predicted charging performance of the Li-ion battery. The FC-ASCC can actually increase the charging speed over 23% comparing with the traditional charging system.
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