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US 9,005,807 B2Granted
Current collector for bipolar secondary battery
AssigneeNissan Motor Co., Ltd.
InventorTakashi Honda
Life of this patent
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Abstract
A bipolar secondary battery current collector is a bipolar secondary battery current collector having electrical conductivity. The current collector has an expansion section that expands in a thickness direction of the current collector at a temperature equal to or higher than a prescribed temperature.
Claims9
A bipolar secondary battery current collector for a bipolar secondary battery comprising:
- an electrically conductive section;
- and
- an expansion section that expands in a thickness direction of the bipolar secondary battery current collector and increases an internal resistance of the battery during a period when heated within a range from 25° C. to 130° C., wherein
- the expansion section includes a thermally expandable microcapsule comprising an expansion material enclosed in a gel containing a thermoplastic macromolecular material.
1 more element
Dependencies are inferred from the claim text.