Title:
FLEXIBLE PRINTED CIRCUIT BOARD AND SECONDARY BATTERY MODULE COMPRISING SAME
Document Type and Number:
WIPO Patent Application WO/2023/163550
Kind Code:
A1
Abstract:
The objective of the present invention is to provide a flexible printed circuit board and a secondary battery module comprising same, wherein it is possible to sense and to continuously monitor whether the secondary battery module is immersed in water, through a simple structure change, or whether the electrolyte of a pouch cell has leaked inside the secondary battery module, thereby securing the quality and stability of the battery and maximizing the space utilization inside the module and the energy density thereof. A secondary battery module according to embodiment 1 of the present invention comprises: a pouch cell assembly formed by arranging multiple pouch cells in the thickness direction; busbar frame assemblies coupled to one side and the other side of the pouch cell assembly, respectively; and a flexible printed circuit board (FPCB) coupled to the busbar frame assemblies, a film layer being stacked on at least one surface of a metal layer of the FPCB. The FPCB comprises: a body portion provided between the busbar frame assemblies coupled to one side and the other side of the pouch cell assembly, respectively; and sensing portions extending from the body portion so as to extend from at least one of one side and the other side of the body portion with reference to the longitudinal direction, the sensing portion being provided on one side and the other side of the body portion with reference to the width direction so as to sense whether moisture or the electrolyte leaks.
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Inventors:
LEE WON TAE (KR)
LEE CHANG BOK (KR)
OH KYU HWAN (KR)
HWANG SUNG TACK (KR)
LEE CHANG BOK (KR)
OH KYU HWAN (KR)
HWANG SUNG TACK (KR)
Application Number:
PCT/KR2023/002679
Publication Date:
August 31, 2023
Filing Date:
February 24, 2023
Export Citation:
Assignee:
LG ENERGY SOLUTION LTD (KR)
International Classes:
H01M10/48; H01M10/42; H01M50/105; H01M50/519; H01M50/569; H05K1/14
Domestic Patent References:
| WO2020122404A1 | 2020-06-18 | |||
| WO2018124494A2 | 2018-07-05 |
Foreign References:
| KR20200080074A | 2020-07-06 | |||
| US11165107B2 | 2021-11-02 | |||
| CN102680191A | 2012-09-19 |
Attorney, Agent or Firm:
BAE, KIM & LEE IP (KR)
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