Degradation-determination system and method for determining degradation of secondary battery
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United States of America Patent
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Sep 17, 2024
Grant Date -
Dec 29, 2022
app pub date -
Sep 6, 2022
filing date -
Sep 6, 2022
priority date (Note) -
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Abstract
A degradation-determination system includes at least four strain gauges that are installed on a principal surface of a lithium-ion battery and each of which is configured to detect pressure of a battery surface at a corresponding installation position, and a degradation determining unit configured to determine degradation of the lithium-ion battery based on measured values at the strain gauges. The degradation determining unit is configured to estimate a maximum expansion position where volume expansion is maximal in a region defined by the strain gauges, of the surface of the lithium-ion battery.
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