US Patent 7129675 System and method for battery charging

Patent 7129675 was granted and assigned to Trojan Battery Company on October, 2006 by the United States Patent and Trademark Office.

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Patent Inventor Names

William B. Brecht0

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Patent abstract

A method for charging a lead acid storage battery to advantageously extend its life is described. The termination of a charging process is based upon an evaluation of the first derivative (dv/dt) and second derivative (d2v/dt2) of the applied charging voltage. By utilizing the first derivative (dv/dt) and second derivative (d2v/dt2) as charging criteria, an amount of overcharge is applied to the battery that takes into account the precise amount of amp-hours previously removed from the battery. A charger arrangement for performing a charging process of the invention also is described.

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https://pdfpiw.uspto.gov/.piw?Docid=07129675

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