| 摘要 |
PROBLEM TO BE SOLVED: To provide a charge and discharge system, which exhibits capability of each battery wholly even in serial arrangement, and with which there occurs no drop in the apparent capacity resulted from unbalance of batteries even if repetitive charge and discharge is executed. SOLUTION: The charge and discharge system for secondary battery comprises (A): a battery pack, which is composed of two pairs or more of the secondary batteries packed in a case, having external terminals of positive pole and negative pole corresponding to a pair of the secondary batteries, and each external terminal is electrically connected to the corresponding positive pole and the negative pole of the secondary battery, respectively; (B): a charger, which has connecting terminals corresponding to the external terminals of the battery pack, and the connecting terminals are wired so that two pairs or more of the secondary batteries are parallel connected; and (C): a device, which has connecting terminals corresponding to the external terminals of the battery pack, and the connecting terminals are wired, so that two pairs or more of the secondary batteries are serially connected, when the external terminals and the connecting terminals are connected. |
