Title:
METHOD AND DEVICE FOR MANUFACTURING SAFETY VENT OF CAP PLATE FOR SECONDARY BATTERY, METHOD FOR MANUFACTURING CAP PLATE USING METHOD FOR MANUFACTURING SAFETY VENT, AND CAP PLATE FOR SECONDARY BATTERY MANUFACTURED BY METHOD FOR MANUFACTURING CAP PLATE
Document Type and Number:
WIPO Patent Application WO/2019/143098
Kind Code:
A1
Abstract:
The present invention provides a method and a device for manufacturing a safety vent of a cap plate for a secondary battery, a method for manufacturing a cap plate using the method for manufacturing a safety vent, and a cap plate for a secondary battery manufactured by the method for manufacturing a cap plate, which can prevent a molding defect in a safety vent of the strength of a vent plate becoming excessively great, by easily molding the safety vent with only one or two times of forging processing in order to prevent a phenomenon in which hardening by forging occurs, during forging, in the vent plate formed at the lower part of the safety vent.
Inventors:
GO SI JIN (KR)
Application Number:
PCT/KR2019/000586
Publication Date:
July 25, 2019
Filing Date:
January 15, 2019
Export Citation:
Assignee:
BUMCHUN PREC CO LTD (KR)
International Classes:
H01M2/12; B21J5/02; B21J13/14; B21K23/00; B23D15/06; H01M2/04; H01M2/34
Domestic Patent References:
| WO2014126408A1 | 2014-08-21 |
Foreign References:
| KR20150004747A | 2015-01-13 | |||
| KR20150113582A | 2015-10-08 | |||
| KR101370855B1 | 2014-03-12 | |||
| KR101471958B1 | 2014-12-11 | |||
| KR101043577B1 | 2011-06-22 |
Other References:
See also references of EP 3742518A4
Attorney, Agent or Firm:
GO, Hong Yeol (KR)
Download PDF:
Previous Patent: MANUFACTURING METHOD FOR MEMBRANE ELECTRODE ASSEMBLY, AND STACKED BODY
Next Patent: SANITARY PRODUCT COLLECTION BIN
Next Patent: SANITARY PRODUCT COLLECTION BIN