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Patent Searching and Data


Title:
BATTERY PACK AND ELECTRIC APPARATUS USING BATTERY PACK
Document Type and Number:
WIPO Patent Application WO/2018/230337
Kind Code:
A1
Abstract:
Provided is a battery pack in which the connection state of a plurality of battery cells can be switched, the battery pack enabling stable operation of a control unit for controlling the discharge of the battery pack. In addition, in a battery pack in which the output voltage is switchable, voltage balance between a plurality of cell units is achieved. A battery pack 100 comprises cell units 146, 147 in which upper and lower battery cells are connected in series, wherein a series-connection output and a parallel-connection output can be switched. The cell units are respectively provided with protection circuit ICs 300, 320 for monitoring the state of the battery cells, and only the protection circuit 320 on the lower cell unit side is provided with a control unit 350 including a microcomputer. To adjust the power consumption for the microcomputer only provided in the lower cell unit, the circuitry on the upper cell unit 146 side is provided with a current consumption control means 310 including dummy loads R31, R34. The current consumption control means 310 is operated in conjunction with the start-up of the microcomputer in the control unit 350 so as to equalize power consumption on the upper cell unit 146 side and the lower cell unit 147 side.

Inventors:
NAKANO YASUSHI (JP)
YAMAGUCHI SATOSHI (JP)
HANAWA HIROYUKI (JP)
FUNABASHI KAZUHIKO (JP)
HISHIKAWA TOMOMASA (JP)
KANNO SHOTA (JP)
MIZOGUCHI TOSHIO (JP)
TERANISHI TAKUYA (JP)
Application Number:
PCT/JP2018/020633
Publication Date:
December 20, 2018
Filing Date:
May 30, 2018
Export Citation:
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Assignee:
KOKI HOLDINGS CO LTD (JP)
International Classes:
H01M10/48; B25F5/00; H01M50/204; H02J7/00; H01M50/247; H01M50/278
Domestic Patent References:
WO2015166907A12015-11-05
Foreign References:
JP2007229827A2007-09-13
JP2011526217A2011-10-06
JP2011161602A2011-08-25
JP2014017954A2014-01-30
JP2014017954A2014-01-30
Other References:
See also references of EP 3641047A4
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