| 摘要 |
A battery pack for an electric device is disclosed which includes: a group of battery cells interconnected in series; discharge control circuitry for converting DC voltage of the group into AC voltage; an AC-output terminal through which an output of the discharge control circuitry is supplied to the device; charge control circuitry for converting AC voltage of a commercial power source into DC voltage, to thereby charge the group; and a charging terminal through which electric power of the source is supplied into the group, wherein the AC-output terminal is connectable with a power-input connector of the device, and the charging terminal is connectable with a charging connector of the source, the pack further comprising a detector for detecting insertion of the power-input connector into the AC-output terminal, wherein the discharge control circuitry initiates a discharge control sequence for the group, if the insertion is detected, and does not initiate the discharge control sequence, in response to non-detection of the insertion. |
