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Patent Searching and Data


Title:
DEVICE AND METHOD FOR DIAGNOSING DEGREE OF BATTERY DETERIORATION
Document Type and Number:
WIPO Patent Application WO/2021/080219
Kind Code:
A1
Abstract:
A device for diagnosing a degree of battery deterioration according to one embodiment comprises: a measuring unit configured to measure voltages of each of a plurality of battery cells and output a plurality of pieces of voltage information for the plurality of measured voltages in each of a plurality of cycles in which discharging and charging are performed; and a control unit configured to receive the plurality of pieces of voltage information, calculate a voltage deviation for each cycle of each battery cell on the basis of a reference voltage measured in an initial cycle of each of the plurality of battery cells, and diagnose a relative degree of deterioration of the plurality of battery cells on the basis of a voltage sum value according to a plurality of calculated voltage deviations for each of the plurality of battery cells.

Inventors:
KIM JI-YEON (KR)
KIM DAE-SOO (KR)
BAE YOON-JUNG (KR)
Application Number:
PCT/KR2020/013690
Publication Date:
April 29, 2021
Filing Date:
October 07, 2020
Export Citation:
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Assignee:
LG CHEMICAL LTD (KR)
International Classes:
G01R31/392; G01R19/10; G01R31/36; G01R31/3835; G01R31/396; H01M10/48
Foreign References:
KR20120076068A2012-07-09
KR20150084354A2015-07-22
JPH07183049A1995-07-21
US20030030442A12003-02-13
KR20100019256A2010-02-18
KR20190132946A2019-11-29
KR101882287B12018-07-26
Other References:
See also references of EP 3998489A4
Attorney, Agent or Firm:
PHIL & ONZI INT'L PATENT & LAW FIRM (KR)
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