| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a battery module high in connection reliability of a current collecting plate and an electrode plate in the battery module in which a plurality of power generating elements are fixed and coupled by connection of the mutual current collecting plates. <P>SOLUTION: The secondary battery 100 is provided with six power generating elements 110, and the case main body member 171 to house the respective power generating elements 110 in six housing parts 173. The respective power generating elements 110 constitutes the secondary battery 100 by connecting a positive electrode coupling part 112 of its own positive electrode current collecting plate 111 to a negative electrode coupling part 132 of a negative electrode current collecting plate 131 of the neighboring power generating elements 110 through a coupling hole 174 of a barrier rib 172. Out of the positive electrode current collecting plates 111, regarding bending to an approaching direction B2 of the opposite direction to a separating direction B1, the positive electrode coupling part 112 becomes easier to be bent than a positive electrode plate first welding part 114a and a positive electrode plate neighboring distal portion 117 in which folding parts 120, 120 exist sideward. <P>COPYRIGHT: (C)2008,JPO&INPIT |
