A battery assembly device is disclosed. The battery assembly device includes a first frame and a plurality of battery units. The first frame has an inner surface. The plurality of battery units are disposed in the first frame, wherein any one battery unit ...

A laminate battery is provided with a tab, an electric power generating element connected to the tab, and a laminate sheet allowing the electric power generating element to be accommodated. The laminate sheet includes a metallic layer and a thermally weldi...