Techniques for determining energy storage device state of health
US11604229B2 · kind B2 · utility
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13References
20Claims
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Key dates
| Filing date | Aug 13, 2021 |
| Grant date | Mar 14, 2023 |
| Priority date | — |
| Expiry date | Aug 13, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J7/0013
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Techniques for determining a state of health of an energy storage device that utilize a capacitor gain amplifier to provide an AC gain and block the DC voltage. An input capacitor can couple between an input excitation signal generator circuit and the amplifier's inverting input terminal, and a feedback capacitor can couple between the amplifier's inverting input terminal and the amplifier's output. A switch can be used to reset the feedback capacitor periodically to prevent the amplifier's output from becoming saturated from a leakage current at the inverting input terminal of the amplifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.