| 摘要 |
PROBLEM TO BE SOLVED: To provide a battery pack capable of suppressing characteristic fluctuations of a safety element even when swelling of an element battery occurs at the time of charging, while attaining downsizing and weight reduction. SOLUTION: The battery pack comprises a core pack 5 including in its structure an element battery 10, a safety element 10, and a protection circuit 40 or the like. The safety element 50 is arranged on a sealing lid 10a of the element battery 10 and is composed of an element body 51 and two leads 51, 52 extended from this. Then, one of the leads 52 is electrically connected to a negative electrode terminal 10b of the element battery 10. In the core pack 5 of the battery pack 1, the safety element 50 is arranged on the sealing lid 10a with an element holder 60 as a buffer member against the bending stress from the sealing lid 10a interposed between the element body 51 and the sealing lid 10a. COPYRIGHT: (C)2010,JPO&INPIT |
