| 摘要 |
PROBLEM TO BE SOLVED: To provide a safety battery unit in which a secondary battery failed can be isolated from normal secondary batteries, normal secondary batteries can be protected, and such a case that the whole battery unit becomes unusable due to failure of a single secondary battery can be avoided.SOLUTION: A secondary battery group (10, 20) and a fuse group (40, 50) are connected by bridge connection, the positive electrode (111, 211) and negative electrode (112, 212) of each secondary battery are provided with fuses (41, 42, 51, 52), respectively, and when any secondary battery (11, 21) is short-circuited due to failure, a fuse corresponding to the secondary battery thus failed can be blown out by a bypass power path. |
