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Method and apparatus for estimating parameter of battery equivalent circuit model, and recording medium
Method and apparatus for estimating parameter of battery equivalent circuit model, and recording medium
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摘要
A method and apparatus for estimating parameters of a battery equivalent circuit model are disclosed.The battery equivalent circuit model includes a first resistor, a second resistor and a capacitor.A method according to one embodiment of the present inventionIs a step of reading a pulse discharge profile corresponding to parameter estimation conditions from a plurality of previously stored pulse discharge profiles;The pulsed discharge profile isWhile the battery having a particular charge state is discharged at a particular temperature from the open voltage corresponding to a particular charge state to the discharge lower limit voltage at a particular constant currentIncludes a first number of terminal voltages sequentially measured at predetermined cycles in the batteryAndExtracting the second number of terminal voltages between the open voltage and the critical voltage among the first number of terminal voltages, andOpen circuit voltageBased on the constant current and the second number of terminal voltagesThe method includes a resistance value of the first resistor and a stage of estimating the resistance value of the second resistor.
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