| 摘要 |
PROBLEM TO BE SOLVED: To provide a lithium-ion battery, along with a heat-seal manufacturing method, capable of preventing entry of water into a battery, and being manufactured by a simple process.SOLUTION: The lithium-ion battery has a battery container to store an electrolytic solution and an electrode unit. The battery container sticks two laminate sheets having an outer layer comprising a metal foil and an inner layer comprising a thermally adhesive resin layer by heat-sealing and sticking the inner layers. Thickness in part of thermally adhesive resin layer in a heat seal portion is made thinner than that in another part of thermally adhesive resin layer in the heat seal portion. |
