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US 11,456,494 B2Granted
Method for early detection of an imminent overheating of at least one battery cell of a battery, detection device, and motor vehicle
AssigneeAudi AG
InventorsMarkus Goebel, Dominik Gottlieb
Life of this patent
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Abstract
A method for detecting an imminent overheating of at least one battery cell of a battery, preferably for a motor vehicle. The imminent overheating is detected as a function of at least one determined first variable relating to the at least one battery cell. A temperature gradient over time of a temperature sensed in a predetermined proximity to the at least one battery cell and/or a voltage of the at least one battery cell is determined as the at least one first variable.
Claims13
A method for detecting an imminent overheating of at least one battery cell of a battery, comprising:
- detecting a plurality of temperatures sensed in predetermined proximities to the at least one battery cell,
- calculating a temperature gradient over time for each of the plurality of temperatures,
- calculating a mean adjusted temperature gradient based on the plurality of temperature gradients, and
- normalizing the plurality of temperature gradients based on the mean adjusted temperature gradient,
- wherein the imminent overheating is detected when one or more of the plurality of temperature gradients so normalized exceed a predetermined gradient limit.
2 more elements
Dependencies are inferred from the claim text.