METHOD AND APPARATUS FOR DETERMINING A THERMAL STATE OF A BATTERY TAKING INTO ACCOUNT BATTERY AGING
First Claim
1. A method for determining a thermal state of a battery used in an electronic system, the battery including one or more cells, the method comprising:
- sensing, within the electronic system, temperature at a position proximate at least one cell of the battery during operation of the electronic system to produce a sensed temperature value;
determining a temperature offset value based on an aging factor for the battery; and
adjusting the sensed temperature value based on the temperature offset value to produce an adjusted temperature value representative of the thermal state of the battery.
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Accused Products
Abstract
An electronic system, or its battery thermal management system, determines a thermal state of a battery used in the electronic system. A temperature at a position proximate the battery'"'"'s cell is sensed during operation of the electronic system to produce a sensed value. Additionally, a temperature offset value is determined based on an aging factor for the battery. The sensed value is then adjusted based on the offset value to produce an adjusted value representative of the thermal state of the battery. According to one embodiment, a relationship between temperature offset value and battery aging factor is prestored in a memory of the electronic system. In such a case, the offset value may be retrieved from memory periodically or in response to a trigger event based on a determined aging factor. According to another embodiment, the offset value may be computed in real time based on a determined aging factor.
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Citations
29 Claims
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1. A method for determining a thermal state of a battery used in an electronic system, the battery including one or more cells, the method comprising:
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sensing, within the electronic system, temperature at a position proximate at least one cell of the battery during operation of the electronic system to produce a sensed temperature value; determining a temperature offset value based on an aging factor for the battery; and adjusting the sensed temperature value based on the temperature offset value to produce an adjusted temperature value representative of the thermal state of the battery. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A thermal management system for use with a battery that supplies electrical power for an electronic system, the thermal management system comprising:
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a temperature sensing circuit positioned proximate at least one cell of the battery, the temperature sensing circuit outputting a value representative of a sensed temperature; a processor operably coupled to the temperature sensing circuit and operable in accordance with stored operating instructions to; determine a temperature offset value based on an aging factor for the battery; and adjust the value representative of the sensed temperature based on the temperature offset value to produce an adjusted temperature value representative of the thermal state of the battery. - View Dependent Claims (21, 22, 23, 24, 25)
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26. An electronic system comprising:
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a battery including at least one cell; a temperature sensing circuit positioned proximate the at least one cell of the battery, the temperature sensing circuit outputting a value representative of a sensed temperature; and a processor operably coupled to the temperature sensing circuit and operable in accordance with stored operating instructions to; determine a temperature offset value based on an aging factor for the battery; and adjust the value representative of the sensed temperature based on the temperature offset value to produce an adjusted temperature value representative of the thermal state of the battery. - View Dependent Claims (27, 28, 29)
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Specification