| 摘要 |
PROBLEM TO BE SOLVED: To provide a closed type battery in which protrusion of an insulating resin film at heat welding is suppressed, in which change in a protrusion amount of the insulating resin film before and after welding is small, and in which aggravation of capacity efficiency can be evaded by stabilizing the outer dimension of the battery. SOLUTION: In the closed type battery which is provided with a sheath material 4 composed of a metal laminate resin film to mold a battery housing part 6, and a power generating element 1 housed in the battery housing part 6 of this sheath material 4, and which has such a structure that terminals 2, 3 of which the one end is connected to the power generating element 1 are heat welded to the sheath material 4 via the insulating resin film 5 and taken out into the outside of the sheath material 4 as the outer terminals 2, 3, notches 7, 7 are formed at the end part of the sheath material 4 facing the heat welding part of the outer terminals 2, 3. COPYRIGHT: (C)2005,JPO&NCIPI
|
