Title:
DEVICE AND METHOD FOR DETECTING INTERNAL DEFECT OF BATTERY CELL BY USING TDR
Document Type and Number:
WIPO Patent Application WO/2023/033522
Kind Code:
A1
Abstract:
The present invention relates to a device for detecting an internal defect of a battery cell, the device comprising: a time domain reflectometry (TDR) module which applies an electric pulse into the battery cell and compares a measured waveform, generated by sensing a reflection of the electric pulse, with a reference waveform to detect whether a defect exists; and a signal line which electrically connects the TDR module to an electrode lead of the battery cell, wherein the electric pulse is propagated in the longitudinal direction of the battery cell. In addition, the present invention relates to a method for detecting an internal defect of a battery cell.
Inventors:
CHO IN HWAN (KR)
PARK SANG DAE (KR)
LEE JU MI (KR)
KIM JU YOUNG (KR)
PARK SANG DAE (KR)
LEE JU MI (KR)
KIM JU YOUNG (KR)
Application Number:
PCT/KR2022/012971
Publication Date:
March 09, 2023
Filing Date:
August 30, 2022
Export Citation:
Assignee:
LG ENERGY SOLUTION LTD (KR)
International Classes:
G01N27/20; G01R31/389; H01M10/42; H01M50/178
Foreign References:
| KR102094539B1 | 2020-03-27 | |||
| US20140111220A1 | 2014-04-24 | |||
| KR20180063927A | 2018-06-14 | |||
| KR102265423B1 | 2021-06-15 | |||
| KR20200035594A | 2020-04-06 | |||
| KR20210115841A | 2021-09-27 | |||
| JP2020165859A | 2020-10-08 |
Other References:
See also references of EP 4249904A4
Attorney, Agent or Firm:
KIM, Hong Gyun (KR)
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