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Title:
CHARGER FOR CELL PACK FOR TOOLS, CHARGING METHOD, AND PROGRAM
Document Type and Number:
WIPO Patent Application WO/2021/075471
Kind Code:
A1
Abstract:
A charger 1 is for a cell pack 2 that includes a plurality of group cells 2a-2c. The charger 1 comprises measurement units 12, 13 for measuring at least one of the voltage and the current of each of the plurality of group cells 2a-2c, and a charging control unit 11 for controlling the charging of each of the plurality of group cells. The charging control unit 11 repeats a cycle that includes a charging control of each of the plurality of group cells 2a-2c a plurality of times, and controls the charging amounts of the group cells 2a-2c in each cycle on the basis of at least one of the current and the voltage so that the states of charge (SOC) of the plurality of group cells approach uniformity.

Inventors:
OTA KOJI (JP)
ISHIKURA HIDEAKI (JP)
HATTORI NAOKI (JP)
KOCHIYAMA KATSUTOSHI (JP)
Application Number:
PCT/JP2020/038813
Publication Date:
April 22, 2021
Filing Date:
October 14, 2020
Export Citation:
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Assignee:
MAXELL HOLDINGS LTD (JP)
MAXELL IZUMI CO LTD (JP)
International Classes:
H01M10/44; H01M10/48; H02J7/02
Attorney, Agent or Firm:
UEBA, Hidetoshi et al. (JP)
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