Method and device for operating a battery, in particular a lithium ion battery, in a consumer
First Claim
1. A method for operating a battery in a consumer, the method comprising:
- determining (S10) at least one operating parameter which describes the state of the battery or the consumer;
comparing (S20) the at least one determined operating parameter with one reference value in each case in order to recognize whether a predefined state exists;
determining a specified critical charge state (SOCkrit), the specified critical charge state (SOCkrit) being an upper charge state limit below which a thermal runaway of the battery does not occur; and
discharging (S32) the battery until a charge state of the battery is below a specified critical charge state (SOCkrit) of the battery if the predefined state exists, wherein by discharging the battery, an energy store is charged by a discharge flow from the battery.
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Abstract
The present invention relates to a method and a device for operating a battery, in particular a lithium ion battery, in a load. For this purpose, a determination (S10) is carried out of at least one operating parameter which describes the state of the battery or the load, a comparison (S20) of the at least one determined operating parameter with one reference value in each case in order to recognize whether a predefined state exists, and a discharge (S32) of the battery until the charge state of the battery lies below a specified critical charge state of the battery if it has been identified that the predefined state exists, wherein by discharging the battery, an energy store is charged by a discharge flow from the battery.
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Citations
12 Claims
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1. A method for operating a battery in a consumer, the method comprising:
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determining (S10) at least one operating parameter which describes the state of the battery or the consumer; comparing (S20) the at least one determined operating parameter with one reference value in each case in order to recognize whether a predefined state exists; determining a specified critical charge state (SOCkrit), the specified critical charge state (SOCkrit) being an upper charge state limit below which a thermal runaway of the battery does not occur; and discharging (S32) the battery until a charge state of the battery is below a specified critical charge state (SOCkrit) of the battery if the predefined state exists, wherein by discharging the battery, an energy store is charged by a discharge flow from the battery. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 12)
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10. A device for operating a battery in a consumer, the device comprising:
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a detection unit (2) which is configured to detect at least one operating parameter which describes the state of the battery or of the consumer, an evaluation unit (3) which is configured to compare the at least one operating parameter with one reference value in each case in order to recognize whether a predefined state exists, and a discharge unit (4) which is configured to discharge the battery, when the predefined state exists, until the charge state of the battery lies below a specified critical charge state SOCkrit of the battery, wherein an energy store (9) is charged by a discharge flow of the battery when the battery is being discharged; wherein the specified critical charge state (SOCkrit) is an upper charge state limit below which a thermal runaway of the battery does not occur. - View Dependent Claims (11)
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Specification