Sealing material for electrochemical element and electrochemical element containing the same
OwnerTakao Uyama, Mitsugu Okahisa +6inventors
InventorsTakao Uyama, Mitsugu Okahisa, Toshihiko Ikehata, Susumu Yamanaka, Toshihide Okamoto, Shigenori Sato, Yoshinori Tanaka, Fukuji Tsubota
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Abstract
In order to give excellent hermeticity in a broad temperature range to an electrochemical device, a sealant comprising a rubber component and a tackifier is used, the rubber component comprising at least one of butyl rubber and polyisobutylene rubber, the tackifier comprising at least one selected from the group consisting of a terpene resin, an aliphatic petroleum resin and an alicyclic petroleum resin.
Claims12
A sealant for an electrochemical device comprising a rubber component and a tackifier,
- said rubber component comprising at least one of butyl rubber and polyisobutylene rubber,
- said tackifier comprising a terpene resin.
An electrochemical device comprising:
- a device unit comprising a positive electrode and a negative electrode disposed to face each other via a separator;
- an electrolyte in contact with said device unit;
- a metal case accommodating said device unit and said electrolyte;
- a sealing member sealing the opening of said metal case;
- and a sealant intervening between the open-end of said metal case and said sealing member,
- wherein said sealant comprises a rubber component and a tackifier, said rubber component comprising at least one of butyl rubber and polyisobutylene rubber, said tackifier comprising at least one selected from the group consisting of a terpene resin, an aliphatic petroleum resin and an alicyclic petroleum resin.
An electrochemical device comprising:
- a device unit comprising a positive electrode and a negative electrode disposed to face each other via a separator;
- an electrolyte in contact with said device unit;
- a metal case accommodating said device unit and said electrolyte;
- a sealing member sealing the opening of said metal case;
- a gasket intervening between said metal case and said sealing member;
- a sealant intervening at least between said gasket and the open-end of said metal case or between said gasket and said sealing member,
- wherein said sealant comprises a rubber component and a tackifier, said rubber component comprising at least one of butyl rubber and polyisobutylene rubber, said tackifier comprising at least one selected from the group consisting of a terpene resin, an aliphatic petroleum resin and an alicyclic petroleum resin.
Dependencies are inferred from the claim text.