NON-AQUEOUS ELECTROLYTE CELL

摘要

The present invention provides a nonaqueous electrolyte battery 10 comprising a nonaqueous electrolytic solution 20; positive and negative plates 34 and 36 in contact with the nonaqueous electrolytic solution 20; a separator 38 disposed between the positive and negative plates 34 and 36; a first lead 18a having one end connected to the positive plate 34 and the other end extending to the outside; a second lead 18b having one end connected to the negative plate 36 and the other end extending to the outside; and a sealed bag 14 for sealing therein the positive and negative plates 34 and 36, the nonaqueous electrolytic solution 20, the separator 38 and parts of the first and second leads 18a and 18b; wherein the sealing bag 14 has a hot-melt resin layer 24, a metal layer 22 disposed outside the hot-melt resin layer 24, and an electrolytic-solution-barrier insulating layer 26 disposed between the hot-melt resin layer 24 and metal layer 22. The electrolytic-solution-barrier insulating layer 26 comprises nylon or ethylene/vinyl alcohol copolymer and exhibits a very low compatibility with nonaqueous electrolytic solution 20. Consequently, the heat-sealing portion 12 has an enhanced blocking property against the nonaqueous electrolytic solution 20, thus improving the hermetic property of the sealed bag 14.