Battery including thermal-expandable layer between pair of current collectors, and battery stack
AssigneePanasonic Intellectual Property Management Co., Ltd.
InventorEiichi Koga
Life of this patent
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Abstract
A battery includes a first current collector, a laminate disposed on a first region of a surface of the first current collector, a thermal-expandable layer disposed on a second region of the surface of the first current collector, and a second current collector disposed on both of the laminate and the thermal-expandable layer. The laminate includes a first active material layer disposed on the first region, an electrolyte layer disposed on the first active material layer, and a second active material layer disposed on the electrolyte layer. A thermal expansion ratio of the thermal-expandable layer is greater than a thermal expansion ratio of the laminate.
Claims15
A battery comprising:
- a first current collector having a surface;
- a laminate disposed on a first region of the surface of the first current collector, the laminate including
- a first active material layer disposed on the first region,
- an electrolyte layer disposed on the first active material layer, and
- a second active material layer disposed on the electrolyte layer;
- a thermal-expandable layer disposed on a second region of the surface of the first current collector, a thermal expansion ratio of the thermal-expandable layer being greater than a thermal expansion ratio of the laminate, wherein the thermal-expandable layer is configured to expand in response to excessive heat;
- and
- a second current collector disposed on both of the laminate and the thermal-expandable layer.
Dependencies are inferred from the claim text.