| 摘要 |
PROBLEM TO BE SOLVED: To miniaturize and lighten a battery which secures safety in the case of overcurrent. SOLUTION: This battery device is formed by a secondary battery body 20 and a lead wire 31 which is electrically connected with the body 20. At least a part of the lead wire 31 is a fusible electric wire which is irreversibly fused by a current value of 10-200 CA. Since the lead wire 31 itself connected with an outside circuit fuses and breaks the overcurrent, special elements, such as PTC elements or fuses are required to be mounted; thereby securing a space for mounting these special elements is not needed for miniaturizing and lightening the battery device. |
