Title:
DEVICE AND METHOD FOR DIAGNOSING BATTERY DETERIORATION
Document Type and Number:
WIPO Patent Application WO/2019/088504
Kind Code:
A1
Abstract:
The present invention relates to a device and a method for diagnosing battery deterioration, the device comprising: a battery comprising at least one cell; a charging unit for charging the cell, and performing cut-off during a stabilization time in which the charged cell is stabilized; a sensing unit for measuring a current of the cell with respect to time; and a control unit for, by using the measured current, detecting an inflection point of the measured current, calculating a slope of the measured current in a first period after a time corresponding to the inflection point; and comparing the current slope of a reference cell, corresponding to the slope of the measured current, so as to diagnose whether the cell has deteriorated.
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Inventors:
KIM JI YEON (KR)
BAE YOON JUNG (KR)
BAE YOON JUNG (KR)
Application Number:
PCT/KR2018/012166
Publication Date:
May 09, 2019
Filing Date:
October 16, 2018
Export Citation:
Assignee:
LG CHEMICAL LTD (KR)
International Classes:
B60L3/00; G01R31/36
Foreign References:
| EP1598913A2 | 2005-11-23 | |||
| US20140019790A1 | 2014-01-16 | |||
| US20130253730A1 | 2013-09-26 | |||
| KR20170022417A | 2017-03-02 | |||
| KR20130136800A | 2013-12-13 | |||
| KR20170142607A | 2017-12-28 |
Other References:
See also references of EP 3604018A4
Attorney, Agent or Firm:
KIM, Hong Gyun (KR)
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