发明名称 |
ENERGY STORAGE CELL IMPEDANCE MEASURING APPARATUS, METHODS AND RELATED SYSTEMS |
摘要 |
Energy storage cell impedance testing devices, circuits, and related methods are disclosed. An energy storage cell impedance measuring device includes a sum of sinusoids (SOS) current excitation circuit including differential current sources configured to isolate a ground terminal of the differential current sources from a positive terminal and a negative terminal of an energy storage cell. A method includes applying an SOS signal comprising a sum of sinusoidal current signals to the energy storage cell with the SOS current excitation circuit, each of the sinusoidal current signals oscillating at a different one of a plurality of different frequencies. The method also includes measuring an electrical signal at a positive terminal and a negative terminal of the energy storage cell, and computing an impedance of the energy storage cell at each of the plurality of different frequencies using the measured electrical signal. |
申请公布号 |
WO2017003917(A1) |
申请公布日期 |
2017.01.05 |
申请号 |
WO2016US39533 |
申请日期 |
2016.06.27 |
申请人 |
BATTELLE ENERGY ALLIANCE, LLC |
发明人 |
MORRISON, John L.;MORRISON, William H.;CHRISTOPHERSEN, Jon P. |
分类号 |
G01R31/36;G01R15/12;G01R27/00;G01R27/02;G01R27/08;H01M10/48 |
主分类号 |
G01R31/36 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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