| 摘要 |
A battery management system comprises a plurality of battery management units (U1-Un) connected in series and a host controller (101). Each battery management unit (U1-Un) comprises a battery cell (A1-An), an isolation element (B1-Bn) and at least one bypass element (P11-P1n, P21-P2n). The isolation element (B1-Bn) is connected with the battery cell (A1-An) in series and the battery cell (A1-An) is isolated by turning off the isolation element (B1-Bn). The bypass elements (P11-P1n, P21-P2n) are in parallel connection with the battery cell (A1-An) and the isolation element (B1-Bn) and the battery cell (A1-An) is bypassed by turning on the bypass element (P11-P1n, P21-P2n). A battery management method comprises: activating the battery cell (A1-An) of the battery management unit (U1-Un) by turning on the isolation element (B1-Bn) and turning off the bypass elements (P11-P1n, P21-P2n) of the battery management unit (U1-Un); and deactivating the battery cell (A1-An) of the battery management unit (U1-Un) by turning off the isolation element (B1-Bn) and turning on the bypass elements (P11-P1n, P21-P2n) of the battery management unit (U1-Un). |
