Dry cell seal closure

Details Dry cell seal closure Dry cell seal closure

H - Electricity

01

M

319/109

H01M 2/08 (2006.01)

Patent

CA 2032892

ABSTRACT An improved dry cell seal closure is disclosed which will substantially prevent moisture loss from and/or oxygen ingress into a battery cell while maximizing the volume available within the cell for the cathode mix core. The seal closure comprises a seal member, such as a plastic washer, placed on top of the cell, covering all of the edge of the domed lip; sealing means, such as an adhesive coated plastic tape, adhesive coated shrink film wrap or shrink film tube, positioned to cover all of the edge and at least part of the upper surface of the seal member and to extend over at least a portion of the side of the cell, thus holding the seal member in place; and a compression member placed over the seal member to partially cover the sealing means, further securing the seal member and creating a seal between the seal member and the domed lip of the cell and between the seal member and the top metal terminal of the battery. - 17 -

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