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 LTDTOKYO

International Classification(s)

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  • 2012 Application Filing Year
  • H02J Class
  • 3166 Applications Filed
  • 2735 Patents Issued To-Date
  • 86.39 % Issued To-Date
Click to zoom InYear of Issuance% of Matters IssuedCumulative IssuancesYearly Issuances20122013201420152016201720182019202020212022202320240255075100

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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Patent Citation Ranking

  • 3 Citation Count
  • H02J Class
  • 8.76 % this patent is cited more than
  • 10 Age
Citation count rangeNumber of patents cited in rangeNumber of patents cited in various citation count ranges4632889281564331201 - 1011 - 2021 - 3031 - 4041 - 5051 - 6061 - 7081 - 9091 - 100100 +020406080100120140160180200220240260280300320340360

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