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US 8,263,245 B2Granted
Cap assembly and secondary battery using the same
AssigneeSamsung SDI Co., Ltd.
InventorDae-Kyu Kim
Life of this patent
Estimating the term…
Abstract
A cap assembly to prevent the leakage of an electrolyte and a secondary battery including the cap assembly. The cap assembly comprises a cap plate having an electrolyte inlet is formed, and an electrolyte inlet switch board to selectively cover the electrolyte inlet. The electrolyte inlet switch board can be shaped as a rectangular prism, can have a corrugated surface, or can have corrugations formed on two opposing surfaces.
Claims18
A cap assembly comprising:
- a cap plate comprising:
- a lower surface facing an electrode assembly,
- an upper surface facing away from the lower surface, and
- an electrolyte inlet opening formed through the cap plate;
- a leaf spring attached to the lower surface to cover the electrolyte inlet opening from below the lower surface, the leaf spring being configured to block or unblock the electrolyte inlet opening from below the lower surface in response to pressure;
- and
- a plug configured to cover the electrolyte inlet opening from above the upper surface.
4 more elements
A secondary battery comprising:
- a cap assembly comprising,
- a cap plate comprising:
- a lower surface facing an electrode assembly,
- an upper surface facing away from the lower surface, and
- an electrolyte inlet opening formed through the cap plate;
- a leaf spring attached to the lower surface to cover the electrolyte inlet opening from below the lower surface, the leaf spring being configured to block or unblock the electrolyte inlet opening from below the lower surface in response to pressure;
- and
- a plug configured to cover the opening from above the upper surface.
5 more elements
Dependencies are inferred from the claim text.