Title:
CAP PLATE FOR SECONDARY BATTERY HAVING VENT STRUCTURE, AND METHOD FOR MANUFACTURING CAP PLATE
Document Type and Number:
WIPO Patent Application WO/2023/022340
Kind Code:
A1
Abstract:
The present invention relates to a cap plate for a secondary battery having a vent structure that is being manufactured through simplified manufacturing processes by integrally forming a vent portion with the cap plate in a cap plate manufacturing process, a mold for manufacturing the cap plate, and a method for manufacturing the cap plate by using the mold. The cap plate of the present invention is for sealing a case accommodating an electrode assembly and comprises: a main body covering the electrode assembly; and a vent portion formed in the main body, wherein the vent portion and the main body are formed of an identical material through a single press process, the thickness of the vent portion corresponds to the main body, and the vent portion includes an interrupted support portion to be out of line with the plane direction of the main body and a weak structure portion which is formed through shear deformation at the boundary between the interrupted support portion and the main body.
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Inventors:
KIM JONG CHAN (KR)
Application Number:
PCT/KR2022/007981
Publication Date:
February 23, 2023
Filing Date:
June 07, 2022
Export Citation:
Assignee:
FINE DNC CO LTD (KR)
International Classes:
H01M50/342; B21D17/02; B21D22/04; H01M50/15
Foreign References:
| JP2007141518A | 2007-06-07 | |||
| KR20170109919A | 2017-10-10 | |||
| KR20180031374A | 2018-03-28 | |||
| KR101416520B1 | 2014-07-09 | |||
| KR20140135082A | 2014-11-25 |
Attorney, Agent or Firm:
SEWON PATENT LAW FIRM (KR)
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