| 摘要 |
PROBLEM TO BE SOLVED: To provide a battery pack endowed with a function of inhibiting its use by itself in case of abnormal conditions, by reliably detecting the abnormal conditions in a charge and discharge channel of a secondary battery. SOLUTION: The battery pack includes a secondary battery, a connecting terminal for connecting the secondary battery to an external device, a charge and discharge channel shutoff means intercalated in series with the charge and the discharge channel formed between the connecting terminals and the secondary battery, and a control unit for managing charge and discharge of the secondary battery. The control unit detects at least a terminal voltage of the secondary battery itself and charge and discharge voltage charged and discharged through the connecting terminals (voltage detection means), and determines on the abnormal conditions of the charge and discharge channel from differences of voltage at each part (abnormal condition decision means). When the abnormal conditions are detected, the charge and discharge shutoff means is activated to inhibit use of the battery pack (use-inhibiting means). COPYRIGHT: (C)2011,JPO&INPIT |
