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Patent Searching and Data


Title:
DEVICE AND METHOD FOR TESTING SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2019/212148
Kind Code:
A1
Abstract:
A device and a method for testing a secondary battery are provided. The device comprises: a test path; test terminals provided at both ends of the test path and configured to be electrically connected respectively to anode and cathode terminals of a secondary battery; a sensor unit provided on the test path and configured to measure discharge current of the secondary battery; a constant voltage generating unit provided on the test path and configured to maintain a constant voltage between the secondary battery and the sensor unit; and a control unit configured to measure an inflection point on a profile of the discharge current by receiving data of the discharge current from the sensor unit, to measure the magnitude of the discharge current on the basis of the inflection point, and to test the magnitude of self-discharge on the basis of the magnitude of the discharge current.

Inventors:
YOON, Dong-Sik (LG Chem Research Park, 188 Munji-ro,,Yuseong-Gu, Daejeon, 34122, KR)
LEE, Jin-Kyu (LG Chem Research Park, 188 Munji-ro,,Yuseong-Gu, Daejeon, 34122, KR)
Application Number:
KR2019/003523
Publication Date:
November 07, 2019
Filing Date:
March 26, 2019
Export Citation:
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Assignee:
LG CHEM, LTD. (128 Yeoui-daero, Yeongdeungpo-Gu, Seoul, 07336, KR)
International Classes:
H01M10/42; G01R31/36; G01R31/364; G01R31/3835; G01R31/392
Foreign References:
JP2017009465A2017-01-12
JP2008078256A2008-04-03
JP2017009422A2017-01-12
KR20140071261A2014-06-11
KR101372157B12014-03-07
Attorney, Agent or Firm:
PHIL & ONZI INT'L PATENT & LAW FIRM (3F. 36, Seochojungang-ro,Seocho-Gu, Seoul, 06643, KR)
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