METHOD FOR DETERMINING THE CHARGE STATE OF A SECONDARY INTERCALATION CELL OF A RECHARGEABLE BATTERY
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Abstract
A method is described for determining the charge state of a secondary intercalation cell having an anode, a cathode, a separator, and an electrolyte phase, which saturates the anode, the cathode, and the separator, in which the charge state is back-calculated on the basis of measured variables, which are measured on the intercalation cell, with the aid of an electrochemical simulation model. In the fundamental simulation model, physical-chemical properties in the anode and the cathode are each considered in simplified form as being homogeneously distributed in the anode and in the cathode and Butler-Volmer reaction kinetics are calculated in each case for the anode and for the cathode. The Butler-Volmer reaction kinetics are expanded on the anode side by a potential component (Φ2) in the electrolyte phase of the anode.
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Citations
24 Claims
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1-12. -12. (canceled)
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13. A method for determining a charge state of a secondary intercalation cell having an anode, a cathode, a separator, and an electrolyte phase which saturates the anode, the cathode, and the separator, the method comprising:
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determining the charge state by back-calculating base on measured variables, which are measured on the intercalation cell, with an electrochemical simulation model, in which simulation model physical-chemical properties in the anode and the cathode are considered in simplified form as being homogeneously distributed in the anode and in the cathode in each case; determining simulation model Butler-Volmer reaction kinetics in each case for the anode and the cathode; and expanding the Butler-Volmer reaction kinetics on the anode side by a potential component in the an electrolyte phase of the anode. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification