Method for determining a potential of an anode and/or a potential of a cathode in a battery cell

    公开(公告)号:US10444291B2

    公开(公告)日:2019-10-15

    申请号:US15577646

    申请日:2016-05-13

    Abstract: A method determines a potential of an anode and/or a potential of a cathode in a battery cell. The method measures a current flowing through the battery cell, determines a charge transfer resistance of the battery cell, ascertains a charge transfer resistance of the anode and a charge transfer resistance of the cathode, ascertains a depth of discharge, ascertains an anode residual voltage and a cathode residual voltage from the depth of discharge from an idle voltage, ascertains an anode excess potential from the charge transfer resistance of the anode and the current and ascertains a cathode excess potential from the charge transfer resistance of the cathode and the current. The method ascertains the potential of the anode from the anode residual voltage and the anode excess potential and ascertains the potential of the cathode from the cathode residual potential and the cathode excess potential.

    METHOD FOR DETERMINING A POTENTIAL OF AN ANODE AND/OR A POTENTIAL OF A CATHODE IN A BATTERY CELL

    公开(公告)号:US20180136286A1

    公开(公告)日:2018-05-17

    申请号:US15577646

    申请日:2016-05-13

    CPC classification number: G01R31/367 G01R31/389 G01R31/392

    Abstract: The invention relates to a method for determining a potential (P1) of an anode (21) and/or a potential (P2) of a cathode (22) in a battery cell (2) which has a negative terminal (11) and a positive terminal (12), having the following steps:—measuring a current (I) flowing through the battery cell (2),—determining a charge transfer resistance of the battery cell (2),—ascertaining a charge transfer resistance (Rct1) of the anode (21) and/or a charge transfer resistance (Rct2) of the cathode (22) from the charge transfer resistance,—ascertaining an idle voltage of the battery cell (2),—ascertaining a depth of discharge of the battery cell (2) from the idle voltage,—ascertaining an anode residual voltage (U1) and/or a cathode residual voltage (U2) from the depth of discharge of the battery cell (2),—ascertaining an anode excess potential (N1) from the charge transfer resistance (Rct1) of the anode (21) and the current (I) and/or ascertaining a cathode excess potential (N2) from the charge Rct2 transfer resistance (Rct2) of the cathode (22) and the current (I), and—ascertaining the potential (P1) of the anode (21) from the anode residual voltage (U1) and the anode excess potential (N1) and/or ascertaining the potential (P2) of the cathode (22) from the cathode residual potential (U2) and the cathode excess potential (N2).

Patent Agency Ranking