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Patent Searching and Data


Title:
APPARATUS AND METHOD FOR ESTIMATING CAPACITY RETENTION RATIO OF SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2019/009530
Kind Code:
A1
Abstract:
Disclosed are an apparatus and a method for estimating a capacity retention ratio of a secondary battery included in a battery pack from a degree of calendar aging and a degree of cycle aging of the secondary battery. The apparatus for estimating a capacity retention ratio comprises: a control unit configured to receive current information and temperature information of the secondary battery from a sensing unit installed in the battery pack at predetermined time intervals, and sequentially execute a first main process and a second main process; and a memory for storing a predetermined weighting factor and further storing a state of charge, the degree of cycle aging and the degree of calendar aging of the secondary battery which are updated by the execution of the first main process at the predetermined time intervals.

Inventors:
SEO SE-WOOK (KR)
Application Number:
PCT/KR2018/006717
Publication Date:
January 10, 2019
Filing Date:
June 14, 2018
Export Citation:
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Assignee:
LG CHEMICAL LTD (KR)
International Classes:
G01R31/36; H01M10/42; H01M10/48
Foreign References:
KR20170022746A2017-03-02
KR20130083220A2013-07-22
JP2000012098A2000-01-14
JP2002228730A2002-08-14
JP2015158416A2015-09-03
KR20170085996A2017-07-25
Other References:
See also references of EP 3531149A4
Attorney, Agent or Firm:
PHIL & ONZI INT'L PATENT & LAW FIRM (KR)
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