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US 2025/0385299 A1Published application
Pressure Regulation System For Silicon Dominant Anode Lithium-Ion Cell
AssigneeEnevate Corporation
InventorsBenjamin Yong Park, Sung Won Choi, Rahul R. Kamath
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Abstract
The disclosure herein pertains to a pressure regulation system for use in a silicon dominate anode lithium-ion cell. The pressure regulation system regulates a lifetime pressure on the lithium-ion cell in order to correct for capacity loss and mechanical failure due the expansion of silicon during operation. The pressure regulation system along with a housing maintains a certain pressure range on the lithium-ion cells during the cycling and the operational life of the energy storage device.
Claims20
A battery comprising:
- a plurality of lithium-ion cells each comprising a silicon-dominant anode;
- a housing surrounding the plurality of lithium-ion cells;
- and
- a spring layer between pairs of the lithium-ion cells, wherein the spring layer has a density of 30 pounds per cubic foot or less.
1 more element
A method of energy storage, the method comprising:
- providing a plurality of lithium-ion cells each comprising a silicon-dominant anode;
- providing a housing surrounding the plurality of lithium-ion cells;
- and
- providing a silicone spring layer between pairs of the lithium-ion cells, wherein the silicone spring layer has spring back behavior with a compression of less than 15% of its original thickness after lithiation/delithiation cycling.
1 more element
A battery comprising:
- a plurality of lithium-ion cells each comprising a silicon-dominant anode;
- a housing surrounding the plurality of lithium-ion cells;
- and
- a silicone spring layer between pairs of the lithium-ion cells, wherein the silicone spring layer has spring back behavior with a compression of less than 8% of its original thickness after lithiation/delithiation cycling.
1 more element
Dependencies are inferred from the claim text.