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Title:
BATTERY PACK
Document Type and Number:
WIPO Patent Application WO/2022/139149
Kind Code:
A1
Abstract:
The present invention provides a battery pack comprising: a battery housing having an inside filled with oil; at least one battery cell provided inside the battery housing; a circulation line connected in a loop shape to the outside of the battery housing to circulate oil; and an expansion tank connected to one side of the battery housing through a connection pipe, wherein oil which is thermally expanded inside the battery housing flows into the expansion tank through the connection pipe, and when the internal pressure of the battery housing is released, the oil that has flown into the expansion tank is returned to the battery housing.

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Inventors:
YI CHEOL SANG (KR)
Application Number:
PCT/KR2021/015016
Publication Date:
June 30, 2022
Filing Date:
October 25, 2021
Export Citation:
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Assignee:
JJ MOTORS CO LTD (KR)
TERA FACTORY CO LTD (KR)
International Classes:
H01M10/659; H01M10/613; H01M10/63; H01M10/653; H01M10/6568; H01M50/30
Foreign References:
JP2008016346A2008-01-24
KR20200021654A2020-03-02
KR20200060755A2020-06-01
KR20160058674A2016-05-25
KR102009221B12019-08-09
KR102308159B12021-10-01
Attorney, Agent or Firm:
BANG, Chan Woong et al. (KR)
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