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Title:
SCREENING METHOD, SCREENING DEVICE, AND METHOD FOR MANUFACTURING SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2018/101114
Kind Code:
A1
Abstract:
This screening method is a screening method for screening a sheet-like battery (21), the screening method being provided with: a charge-and-discharge waveform acquiring step (S11) of acquiring a charge-and-discharge waveform of the sheet-like battery (21) by charging and discharging the sheet-like battery (21); a step (S12) of evaluating, on the basis of the charge-and-discharge waveform, time variation of a discharge voltage during the discharging of the sheet-like battery; a step (S13) of evaluating, on the basis of the charge-and-discharge waveform, time variation of a charge voltage during the charging of the sheet-like battery; a step (S14) of evaluating, on the basis of the charge-and-discharge waveform, charging efficiency of the sheet-like battery; a step (S15) of evaluating, on the basis of the charge-and-discharge waveform, a current value at the time when the charging of the sheet-like battery is finished; and a screening step (S16) of screening the sheet-like battery (21), on the basis of the evaluation results in step (S12) to step (S15).

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Inventors:
SANO MASAMI (JP)
UEKI ISAO (JP)
IGARASHI MASAYUKI (JP)
Application Number:
PCT/JP2017/041744
Publication Date:
June 07, 2018
Filing Date:
November 21, 2017
Export Citation:
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Assignee:
NIHON MICRONICS KK (JP)
International Classes:
G01R31/36; H01M10/44; H01M10/48; H02J7/00
Domestic Patent References:
WO2013065093A12013-05-10
WO2013161926A12013-10-31
WO2013161927A12013-10-31
Foreign References:
JP2003217683A2003-07-31
JP2014025858A2014-02-06
JP2011028931A2011-02-10
JP2001325988A2001-11-22
JP2010193629A2010-09-02
JP2000329834A2000-11-30
US20070252600A12007-11-01
Other References:
See also references of EP 3550316A4
Attorney, Agent or Firm:
IEIRI Takeshi (JP)
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