Title:
BATTERY PACK HAVING IMPROVED SWELLING MEASUREMENT ACCURACY
Document Type and Number:
WIPO Patent Application WO/2022/014955
Kind Code:
A1
Abstract:
Disclosed is a battery pack capable of accurately detecting swelling of a battery cell according to the situation. A battery pack according to one aspect of the present invention comprises: a battery cell having an electrode assembly, an electrolyte, a battery case, and an electrode terminal; a deformation measuring unit, at least a portion of which is attached to the outer surface of the battery case of the battery cell, and configured to measure whether the battery case is deformed; an impedance measurement unit connected to the electrode terminal of the battery cell and configured to measure the impedance inside the battery cell; and a control unit configured to determine whether the battery cell has swollen by using a deformation measurement result by means of a deformation measurement unit and an impedance measurement result by means of the impedance measurement unit.
Inventors:
SONG HYEON-JIN (KR)
Application Number:
PCT/KR2021/008750
Publication Date:
January 20, 2022
Filing Date:
July 08, 2021
Export Citation:
Assignee:
LG ENERGY SOLUTION LTD (KR)
International Classes:
H01M10/48; G01B5/30; G01N27/04; H01M10/42
Domestic Patent References:
| WO1996035253A1 | 1996-11-07 |
Foreign References:
| US6664000B1 | 2003-12-16 | |||
| KR20180045374A | 2018-05-04 | |||
| KR101406104B1 | 2014-06-13 | |||
| JP2009252644A | 2009-10-29 | |||
| KR20200087035A | 2020-07-20 |
Other References:
See also references of EP 4075570A4
Attorney, Agent or Firm:
PHIL & ONZI INT'L PATENT & LAW FIRM (KR)
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