H - Electricity – 01 – M
Patent
H - Electricity
01
M
H01M 2/12 (2006.01) H01M 2/04 (2006.01)
Patent
CA 2322887
An integral seal/inner cover assembly is provided, for an electrochemical cell that has a can (12) for containing electrochemical materials including positive and negative electrodes and an electrolyte, the can having an open end and a closed end. The assembly is positioned in the open end of the can, and comprises a rigid inner cover (110) and a seal (130) preformed onto an inner-facing surface of the inner cover, the inner cover comprising at least one aperture (117) and the seal covering the aperture. The sealed aperture provides a pressure relief mechanism for relieving excessive internal pressure from the cell. Preferably, the seal is made of rubber and is moulded directly onto the inner cover. A method of constructing the assembly, as well as an electrochemical cell containing the assembly are also provided.
L'invention concerne un ensemble couvercle interne/joint intégré pour pile électrochimique constituée d'une cuve (12) destinée à contenir des matières électrochimiques, dont des électrodes positive et négative et un électrolyte, la cuve possédant une extrémité ouverte et une extrémité fermée. Ledit ensemble est positionné dans l'extrémité ouverte de la cuve et comprend un couvercle (110) interne rigide et un joint (130) préformé sur la surface tournée vers l'intérieur du couvercle interne, lequel comporte au moins une ouverture (117), et le joint couvrant l'ouverture. L'ouverture fermée par le joint constitue un mécanisme limiteur de pression, et permet l'évacuation de la pression interne excessive de la cellule. De préférence, le joint est en caoutchouc et est moulé directement sur le couvercle interne. Un procédé de construction dudit ensemble ainsi qu'une pile électrochimique contenant ledit ensemble sont également décrits.
Eveready Battery Company Inc.
Finlayson & Singlehurst
LandOfFree
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