Method for determining the operating state of an energy-storage battery
First Claim
1. A method for determining the operating state of an energy-storage battery in assumed temperature and state of charge conditions comprising:
- a) measuring a temperature variable (TACT) which is correlated with a battery temperature (TBAT);
b) determining a state of charge (SOCACT) of the energy-storage battery;
c) determining a further state of variable (AACT) of the energy-storage battery;
d) forming a reference value (BV) from a reference between the further state variable (AACT) and a corresponding state variable (ANEW) of a substantially identical, new energy-storage battery with the same temperature variable (TACT) and the same state of charge (SOCACT); and
e) determining a predicted state variable (AP) as a measure of operating state for an assumed temperature variable (TP) and an assumed state of charge (SOCP) from known comparison reference values (BT), which have been recorded as a function of temperature variables (T), states of charge (SOC) and the aging state of identical energy-storage batteries.
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Abstract
A method for determining the operating state of an energy-storage battery in assumed temperature and state of charge conditions, which has the following steps: a) measurement of a temperature variable (TACT) which is correlated with the battery temperature (TBAT), b) determination of the state of charge (SOCACT) of the energy-storage battery, c) determination of a further state variable (AACT) of the energy-storage battery, d) formation of a reference value (BV) from the reference between the determined state variable (AACT) and a corresponding state variable (ANEW) of an identical, new energy-storage battery with the same temperature variable (TACT) and the same state of charge (SOCACT), and e) determination of a predicted state variable (AP) as a measure of the operating state for an assumed temperature variable (TP) and an assumed state of charge (SOCP) from known comparison reference values (BT), which have been recorded as a function of temperature variables (T), states of charge (SOC) and the aging state of identical energy-storage batteries.
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Citations
12 Claims
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1. A method for determining the operating state of an energy-storage battery in assumed temperature and state of charge conditions comprising:
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a) measuring a temperature variable (TACT) which is correlated with a battery temperature (TBAT);
b) determining a state of charge (SOCACT) of the energy-storage battery;
c) determining a further state of variable (AACT) of the energy-storage battery;
d) forming a reference value (BV) from a reference between the further state variable (AACT) and a corresponding state variable (ANEW) of a substantially identical, new energy-storage battery with the same temperature variable (TACT) and the same state of charge (SOCACT); and
e) determining a predicted state variable (AP) as a measure of operating state for an assumed temperature variable (TP) and an assumed state of charge (SOCP) from known comparison reference values (BT), which have been recorded as a function of temperature variables (T), states of charge (SOC) and the aging state of identical energy-storage batteries. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
determining an aging state of the storage battery from reference values (BV) and from comparison reference values (BT) for a defined temperature variable (T) and a defined state of charge (SOC).
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12. The method of claim 1, further comprising:
determining a reference value (BV) by the assumed temperature variable (TP) and the assumed state of charge (SOCP) by transformation of a functional relationship between the comparison reference values (BT) and the state variable (AACT) determined for the measured temperature variable (TACT) and the determined state of charge (SOCACT), and calculating a predicted state variable (AP) from the reference between the reference value (BV) and the state variable (ANEW) of a substantially identical new storage battery.
Specification