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Patent Searching and Data


Title:
POUCH-TYPE BATTERY CASE, MANUFACTURING DEVICE FOR MANUFACTURING SAME, AND POUCH-TYPE SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2021/054722
Kind Code:
A1
Abstract:
A pouch-type battery case according to an embodiment of the present invention for solving the problem comprises a cup part which is formed to accommodate therein an electrode assembly formed by stacking an electrode and a separator, wherein the cup part includes: a bottom portion forming the bottom; outer walls forming side surfaces and converging with the bottom portion; punch edges connecting the bottom portion and each of the outer walls; thickness edges connecting the two neighboring outer walls to each other; and corners formed by connecting the two neighboring punch edges and the thickness edges. At least one of the punch edges is formed rounded, at least one of the thickness edges is formed rounded, and at least one of the corners is formed rounded, wherein the radii of curvature of the corners are different from the radii of curvature of the punch edges and the thickness edges.

Inventors:
KIM HYUN IL (KR)
KIM SUNG HYUN (KR)
LEE WOO YONG (KR)
PARK KI HYUN (KR)
Application Number:
PCT/KR2020/012502
Publication Date:
March 25, 2021
Filing Date:
September 16, 2020
Export Citation:
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Assignee:
LG CHEMICAL LTD (KR)
International Classes:
B29C51/08; B29L31/00
Foreign References:
JP2018085190A2018-05-31
JP2005294212A2005-10-20
KR20170091938A2017-08-10
KR20070109080A2007-11-15
US20070224499A12007-09-27
Attorney, Agent or Firm:
BAE, KIM & LEE IP (KR)
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