Battery characterization system
First Claim
1. A system for modeling a lead-acid battery in the form of a representative electrical circuit comprising:
- an electrical circuit comprising;
a charging circuit configured to simulate the initial charging of the battery and having a capacitor configured for charging to a first voltage;
an electrochemical reaction circuit comprising;
a plurality of capacitors configured to simulate the charging and discharging of the battery due to internal chemical reactions and configured for charging to a second voltage;
a plurality of resistors for simulating the resistance of the battery;
a voltage drop circuit including a resistor and a capacitor configured to simulate capacitive charging and discharging of the battery and configured for charging to a third voltage;
wherein the representative circuit is implemented through a computer-based simulation.
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Abstract
A system for modeling a lead-acid battery is disclosed. A system for modeling a lead-acid battery is also disclosed. An equivalent circuit model of a battery comprising an impedance circuit for simulating the electrochemical charging and discharging of the battery is also disclosed. A circuit (100) for modeling a lead-acid battery having an RC network for simulating the impedance of cells of the battery is also disclosed. A method of modeling a lead-acid battery with an electrical circuit (100) comprising a charging circuit (111), an electrochemical reaction circuit (113), and a voltage drop circuit (115) is also disclosed. A method for constructing an equivalent electrical circuit model of a lead-acid battery is also disclosed.
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Citations
39 Claims
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1. A system for modeling a lead-acid battery in the form of a representative electrical circuit comprising:
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an electrical circuit comprising;
a charging circuit configured to simulate the initial charging of the battery and having a capacitor configured for charging to a first voltage;
an electrochemical reaction circuit comprising;
a plurality of capacitors configured to simulate the charging and discharging of the battery due to internal chemical reactions and configured for charging to a second voltage;
a plurality of resistors for simulating the resistance of the battery;
a voltage drop circuit including a resistor and a capacitor configured to simulate capacitive charging and discharging of the battery and configured for charging to a third voltage;
wherein the representative circuit is implemented through a computer-based simulation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A system for modeling a lead-acid battery in the form of a representative electrical circuit comprising:
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an electrochemical reaction circuit configured to simulate the charging and discharging of the battery between a predetermined base voltage and a predetermined open circuit voltage;
a charging circuit configured to charge the electrochemical reaction circuit to the base voltage;
wherein the representative circuit is implemented through a software-based simulation. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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20. An equivalent circuit model of a battery comprising an impedance circuit model for simulating the electrochemical charging and discharging of the battery, an improvement comprising:
an initial charge circuit model for charging the equivalent circuit model to a predetermined voltage value. - View Dependent Claims (21, 22)
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23. A circuit for modeling a lead-acid battery having an RC network for simulating the impedance of the battery, an improvement comprising:
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a charge circuit comprising a capacitor, a resistor, and a diode each electrically coupled in parallel, the charge circuit being electrically coupled to the RC network for charging the circuit to a base voltage;
wherein the RC network charges the circuit between the base voltage and an open circuit voltage to simulate the electrochemical charging of the battery. - View Dependent Claims (24, 25, 26, 27, 28)
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29. A method of modeling a lead-acid battery with an electrical circuit comprising a charging circuit, an electrochemical reaction circuit, and a voltage drop circuit, comprising:
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charging a capacitor of the initial charging circuit at a predetermined rate to a predetermined voltage, thereby simulating the initial charging of the battery;
charging and discharging a plurality of capacitors of the electrochemical circuit, thereby simulating a slope of an open circuit voltage of the battery versus a relative state of charge of the battery;
charging and discharging a capacitor of the voltage drop circuit, thereby simulating a capacitive charging and discharging of the battery. - View Dependent Claims (30, 31)
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32. A battery characterization system implemented through a control program comprising a representative circuit, the battery characterization system comprising:
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a model of a representative electrical circuit comprising;
a model of a representative charging circuit configured to simulate the initial charging of the battery and having a capacitor model configured to simulate charging to a first voltage;
a model of a representative electrochemical reaction circuit comprising;
a plurality of capacitor models configured to simulate the charging and discharging of the battery due to internal chemical reactions and configured to simulate charging to a second voltage;
a plurality of resistor models for simulating the resistance of the battery;
a model of a representative voltage drop circuit including a resistor model and a capacitor model configured to simulate capacitive charging and discharging of the battery and configured for simulating charging to a third voltage;
wherein the battery characterization system is implemented through a computer-based simulation. - View Dependent Claims (33, 34, 35, 36, 37, 38)
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39. A method for making an equivalent electrical circuit model of a lead-acid battery comprising:
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determining Peukert'"'"'s slope for the battery;
determining the nominal capacitance of the battery;
selecting a plurality of capacitors for the electrical circuit model based on the Peukert'"'"'s slope and the nominal capacitance of the battery.
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Specification