Title:
SHUTDOWN THREE-LAYER BATTERY SEPARATOR
Document Type and Number:
Japanese Patent JP3960437
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a battery separator to exhibit characteristics excellent in a thickness, rupture strength and peel strength besides a shutdown characteristic, in its turn, a cutoff characteristic of a passing ion.
SOLUTION: A three-layer battery separator is formed by sandwiching a first microporous membrane a third microporous membrane and a second microporous membrane in a sandwich shape. A shutdown three-layer battery separator 10, on which the first microporous membrane and the third microporous membrane have rupture strength stronger than the second microporous membrane, and the second microporous membrane has a melting temperature lower than the first and the third membrane, is excellent in a cutoff effect of a passing ion when a short circuit is caused, and shows characteristics excellent in a thickness, rupture strength and peel strength.
Inventors:
Way-Ching You
Application Number:
JP32855495A
Publication Date:
August 15, 2007
Filing Date:
December 18, 1995
Export Citation:
Assignee:
Celgard, Inc.
International Classes:
B32B5/22; B01D67/00; B01D69/12; B01D71/26; B29C55/02; B29D7/00; B32B5/18; B32B27/32; H01M50/417; H01M50/457; H01M50/489; H01M6/50; (IPC1-7): H01M2/16; B32B5/22
Domestic Patent References:
| JP7307146A | ||||
| JP6208849A | ||||
| JP7029563A |
Attorney, Agent or Firm:
Takehiko Saito
Yasuyuki Hata
Yasuyuki Hata
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