Method and Device for Determining the Charge and/or Aging State of an Energy Store
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Accused Products
Abstract
In a method and a device for determining a charge/aging state of an energy store, the charge/aging state is able to be determined by a control unit on the basis of an open terminal voltage of the energy store, able to be measured with the aid of a voltage-measuring sensor, in a load-free state. It is provided that the control unit initiates a measurement of a first open terminal voltage at a first instant following the occurrence of the load-free state of the energy store and, based on the measured first open terminal voltage, the control unit, with the aid of a prediction model, specifies a future instant for at least one additional measurement of the open terminal voltage, and at least one additional open terminal voltage is measured at the future instant, and the charge/aging state of the energy store is determined with the aid of the at least one additional open terminal voltage.
18 Citations
34 Claims
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1-16. -16. (canceled)
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17. A method for determining a charge/aging state of an energy store based on a measurement of an open terminal voltage of the energy store in a load-free state, comprising:
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measuring a first open terminal voltage at a first instant; defining a future instant for at least one further measurement of the open terminal voltage based on the measured first open terminal voltage and in accordance with a prediction model; measuring at least one additional open terminal voltage at the future instant; and determining the charge/aging state of the energy store based on the at least one additional open terminal voltage. - View Dependent Claims (18, 19, 20, 21, 22, 23)
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24. A device for determining a charge/aging state of an energy store, comprising:
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a voltage-measurement sensor configured to measure an open terminal voltage of the energy store in a load-free state; and a control unit configured to determine the charge/aging state based on the open terminal voltage of the energy store in the load-free state; wherein the control unit is configured to initiate, at a first instant, a measurement of a first open terminal voltage after occurrence of the load-free state of the energy store and, based on the measured first open terminal voltage, the control unit, in accordance with a prediction model, is configured to specify a future instant for at least one additional measurement of the open terminal voltage, at least one additional open terminal voltage measurable at the future instant, the charge/aging state of the energy store determinable based on the at least one additional open terminal voltage. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
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Specification