Wound cell and battery using the same

A battery comprising:

• a packaging shell;
• and
• a wound cell arranged in the packaging shell and comprising:
• a first electrode plate comprising a first surface provided with a first active material area and a first current collector area, the first current collector area being located on an inner side of an outermost circle of the wound cell;
• and
• a second surface comprising a second active material area, a second current collector area, and a third current collector area connected to the first current collector area, the third current collector area being located on an outer side of the outermost circle of the wound cell;
• wherein, in the first electrode plate, the second current collector area and the first current collector area are adjacent to and opposite to each other, the first current collector area and the second current collector area are bonded together by a first bonding member, and the third current collector area and the packaging shell are bonded together by a second bonding member.