Title:
REACTION ESTIMATION METHOD FOR SECONDARY BATTERY AND SECONDARY BATTERY COMPRISING BATTERY CELL USED FOR SAME
Document Type and Number:
WIPO Patent Application WO/2018/084675
Kind Code:
A1
Abstract:
The present invention provides a reaction estimation method for a secondary battery and a battery cell used for the same for designing a secondary battery in which a rapid charging performance is improved by estimating a reaction of a electrode in a thickness direction, the method comprising: (a) a step of preparing a battery cell which has a structure of a first electrode/a separating film/a reference electrode/a separating film/a second electrode, wherein the second electrode has a structure of an upper layer portion/a porous film/a lower layer portion; (b) a step of setting a state-of-charge to estimate a reaction of the battery cell; (c) a step of measuring a voltage and a current respectively of the upper layer portion, the lower layer portion, and the battery cell while reaching the set state-of-charge; (d) a step of measuring an open circuit voltage of the upper layer portion, the lower layer portion, and the battery cell after the state-of-charge; and (e) a step of comparing and analyzing a capacitance, obtained using the measured current, and the measured open circuit voltage.
Inventors:
CHO HYUNG-MAN (KR)
LEE SOL-NIP (KR)
OH SONG-TAEK (KR)
LEE HYEOK-MOO (KR)
LEE SOL-NIP (KR)
OH SONG-TAEK (KR)
LEE HYEOK-MOO (KR)
Application Number:
PCT/KR2017/012495
Publication Date:
May 11, 2018
Filing Date:
November 06, 2017
Export Citation:
Assignee:
LG CHEMICAL LTD (KR)
International Classes:
G01R31/36; H01M10/42; H01M10/48
Foreign References:
| KR20160059688A | 2016-05-27 | |||
| KR20150066464A | 2015-06-16 | |||
| KR20130122543A | 2013-11-07 | |||
| JP2015108579A | 2015-06-11 | |||
| JP2013061337A | 2013-04-04 |
Other References:
See also references of EP 3425412A4
Attorney, Agent or Firm:
PHIL & ONZI INT'L PATENT & LAW FIRM (KR)
Download PDF: