Early detection of cell vent rupture with battery cell identification
AssigneeGM Global Technology Operations LLC
InventorsMichelle H. WIEBENGA, Rashmi Prasad, Vamakshi Yadav, Lei Wang, Chandra S. Namuduri
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Abstract
A system for detecting bulging or rupturing of a vent cap includes a battery cell including a rigid enclosure, first and second terminals, and a vent cap. A first sensor is arranged adjacent to the vent cap and configured to sense a parameter affected by rupturing of the vent cap. A controller is configured to compare the parameter to a predetermined parameter and to detect rupturing of the vent cap in response to the comparison.
Claims20
A system for detecting bulging or rupturing of a vent cap, comprising:
- a battery cell including a rigid enclosure, first and second terminals, and a vent cap;
- a first sensor arranged adjacent to the vent cap and configured to sense a parameter affected by rupturing of the vent cap;
- and
- a controller configured to compare the parameter to a predetermined parameter and to detect rupturing of the vent cap in response to the comparison.
A battery system for detecting bulging or rupturing of a vent cap, comprising:
- C battery cells, where C is an integer greater than or equal to one, wherein each of the C battery cells includes:
- a rigid enclosure,
- first and second terminals,
- a vent cap, and
- a first sensor arranged adjacent to the vent cap and configured to sense a parameter affected by rupturing of the vent cap;
- and
- a controller configured to compare the parameter generated by the first sensor for the C battery cells to predetermined thresholds, respectively, and detect rupturing of the vent cap for a respective one of the C battery cells in response to the comparisons.
Dependencies are inferred from the claim text.