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Title:
BATTERY MODULE WITH IMPROVED SAFETY, BATTERY PACK COMPRISING BATTERY MODULE, AND VEHICLE COMPRISING BATTERY PACK
Document Type and Number:
WIPO Patent Application WO/2020/116799
Kind Code:
A1
Abstract:
Provided are a battery module with improved safety by being capable of blocking current during a temperature increase, a battery pack comprising the battery module, and a vehicle comprising the battery pack. The battery module according to the present invention is characterized in that the battery module comprises two or more battery cells, wherein the battery cells are pouch-type secondary batteries having a structure in which an electrode assembly having one end of an electrode lead of opposite polarity connected to both ends thereof is accommodated and sealed with an electrolyte in a pouch case, wherein the other end of the electrode lead is exposed to the outside of the pouch case. The electrode lead and a bus bar are connected to electrically connect a first battery cell and a second battery cell among the battery cells. The bus bar is made of a metal layer and a material layer, wherein the material layer can operate with resistance when the temperature rises but is normally conductive. The material layer includes a gas-generating material that decomposes at a certain temperature or higher to increase resistance by generating gas.

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WO/2014/104841DEVICE AND METHOD FOR SEALING POUCH CASE OF SECONDARY BATTERY
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Inventors:
LEE HAN-YOUNG (KR)
LEE KYUNG-MIN (KR)
JUNG BUM-YOUNG (KR)
HA JEONG-HO (KR)
Application Number:
PCT/KR2019/015085
Publication Date:
June 11, 2020
Filing Date:
November 07, 2019
Export Citation:
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Assignee:
LG CHEMICAL LTD (KR)
International Classes:
H01M50/105; H01M50/211; H01M50/50; H01M50/574
Domestic Patent References:
WO2018155281A12018-08-30
Foreign References:
KR20130064031A2013-06-17
KR20120070851A2012-07-02
KR101310423B12013-09-24
US20170237060A12017-08-17
KR20180157556A2018-12-07
Other References:
See also references of EP 3843178A4
Attorney, Agent or Firm:
PHIL & ONZI INT'L PATENT & LAW FIRM (KR)
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