Methods for determining the charge state and/or the power capacity of a charge store
First Claim
1. A method for determining the state of charge and/or the operability of a charge accumulator using estimates, wherein information obtained at at least two different operating points of the energy accumulator is taken into account in the estimates.
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Accused Products
Abstract
Methods are described for determining the state of charge and/or the operability of a charge accumulator using estimates, the information, which is obtained at at least two different operating points or operating conditions of the energy accumulator, being taken into account in the estimates. The estimates are carried out with regard to an instantaneous and/or future state of charge and/or an instantaneous and/or future operability of the charge accumulator. Different methods are executed, depending on the operating point or operating condition. The methods are usually run in a processor of a control unit.
144 Citations
24 Claims
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1. A method for determining the state of charge and/or the operability of a charge accumulator using estimates,
wherein information obtained at at least two different operating points of the energy accumulator is taken into account in the estimates.
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10. A method for determining the state of charge and/or the operability of a charge accumulator,
wherein state variables and parameters are determined from the following measured variables: - battery voltage, battery current, and battery temperature according to a first method A, in particular an open-circuit voltage method; and
additional state variables and parameters are determined according to a second, model-based method B and correction variables are obtained therefrom; and
the state variables are used for calculating the state of charge, and the state variables and the parameters are used for predicting the operability of the charge accumulator and for determining the predetermined battery voltage.
- battery voltage, battery current, and battery temperature according to a first method A, in particular an open-circuit voltage method; and
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13. (New) A method for determining at least one of a state of charge and an operability of a charge accumulator in accordance with an estimate, comprising:
taking into account in the estimate information obtained at at least two different operating points of the charge accumulator. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21)
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22. (New) A method for determining at least one of a state of charge and an operability of a charge accumulator in accordance with an estimate, comprising:
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determining a state variable and a state parameter from the following measured variables;
a battery voltage, a battery current, and a battery temperature according to a first operation;
determining an additional state variable and an additional sate parameter according to a second, model-based operation;
obtaining a correction variable from at least one of the state variable, the additional state variable, the state parameter, and the additional state parameter;
calculating the state of charge in accordance with at least one of the state variable and the additional state variable; and
predicting the operability of the charge accumulator and determining the battery voltage in accordance with at least one of the state variable and the additional state variable and at least one of the state parameter and the additional state parameter. - View Dependent Claims (23)
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24. (New) A device for determining at least one of a state of charge and an operability of a charge accumulator in accordance with an estimate, comprising:
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an arrangement for taking into account in the estimate information obtained at at least two different operating points of the charge accumulator; and
a control unit including at least one processor and to which required information is supplied.
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Specification