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Non-intrusive monitoring of the state-of-charge of sealed lead-acid batteries using wire-wound coils is described. Coils were attached to the plastic case of the batteries, adjacent to the negative end plate, and excited using ac current at 10kHz. As the batteries were cycled, the inductance of the coils tracked the change in metallic content of the end plates. Data is presented for different discharge...
Non-intrusive monitoring of the state-of-charge (SOC) of lead-acid batteries by the use of wire wound coils is described. Coils were attached to the outside case of the battery, adjacent to the negative end plate, and excited using ac current of frequency in the range of 1-40kHz. The change in inductance of the coils was monitored during battery cycling, as the metallic content of the electrode changed...
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