| 摘要 |
PROBLEM TO BE SOLVED: To ensure safety in overcharge, increase air tightness, reduce production cost, and to make lightweight by installing a reinforcing member which does not elastically deform under specified stress or less in a unit cell case. SOLUTION: A reinforcing member 3 is installed within a metal laminate resin film case 1 which is a unit cell case. The shape of the reinforcing member 3 is not specifically limited, and for example, a plate shape, a flame shape, and an H type are listed. The material of the reinforcing member 3 is not specifically limited, and for example, metal such as Ni and polyethylene are used. In other words, any material can be used as the reinforcing member 3, which does not elastically deform under stress of 5 kgf/cm2 or less so as not to deform an power generating element 2 when the inner pressure of a battery is increased by generation of gas in overcharge. The reinforcing member 3 can be fixed in any position on the either side of the inside and the outside of the power generating element 2. |
