Refresh charging method for an assembled battery constituted from a plurality of lead-acid storage batteries and charging apparatus

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United States of America Patent

PATENT NO 9112371
APP PUB NO 20140340050A1
SERIAL NO

13824644

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Abstract

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Provided are a refresh charging method and a refresh charging apparatus for an assembled battery constituted from lead-acid storage batteries, by which a necessary charging rate may be performed while shortening a charging period. In a constant voltage charging mode, n intermediate threshold values S1 to Sn which decrease stepwisely are set between a predetermined threshold value S0 and a lower-limit current value, and n additional timer periods T1 to Tn are set where n is an integer equal to or larger than one. Counting of the n additional timer periods T1 to Tn is respectively started when the charging current reaches the n intermediate threshold values S1 to Sn. A maximum timer period Tm and the n additional timer periods T1 to Tn are set to satisfy a relationship of Tm>T1> . . . >Tn. Charging is stopped when the counting of one of the maximum timer period Tm and the n additional timer periods T1 to Tn is completed before the lower-limit current value is detected.

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Patent Owner(s)

Patent OwnerAddress
ENERGYWITH CO LTD3 KANDANERIBEICHO CHIYODA-KU TOKYO 101-0022

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Mitani, Katsura Nara, JP 5 10
Sano, Shinichi Mie, JP 24 362
Wakatabe, Hiroyuki Mie, JP 5 10

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