A thermal composite laminated cell and a battery are disclosed. The thermal composite laminated cell is formed by folding a composite unit, and the composite unit includes a first separator, a second separator, first electrode plates and second electrode plates. Portions of the first separator and the second separator are fixedly connected to form pouch-like structures each with an opening. The first electrode plates are placed inside the respective pouch-like structures, and the second electrode plates are alternately arranged at a side of the first separator away from the first electrode plates and at a side of the second separator away from the first electrode plates along the length direction of the composite unit.

A secondary battery includes an electrode assembly, an electrolyte solution, a seal tape, and a can. The electrode assembly has a structure in which a positive electrode, a negative electrode, and a separator are in a wound state. The seal tape includes a base and an adhesive layer provided on one surface of the base. The can accommodates the electrode assembly and the electrolyte solution. The negative electrode is disposed along an outer circumferential surface of the electrode assembly and the seal tape is provided on the outer circumferential surface. The adhesive layer is configured to expand when in contact with the electrolyte solution.

A button-type secondary battery includes an electrode assembly in which a negative electrode, a separator, and a positive electrode are layered wound in a state of being layered; a lower can in which the electrode assembly is mounted, and a space portion is defined as a surplus space in addition to a space in which the electrode assembly is mounted; an upper can coupled to the lower can to close the lower can in a state in which the electrode assembly is mounted in the lower can, and an electrolyte is injected; and a swelling member mounted in the lower can in a state of being coupled to an outer surface of the electrode assembly. When the electrolyte is injected, the swelling member absorbs the electrolyte to be expanded in volume within the space portion.