Flat cell battery connector seal
First Claim
1. An alkaline cell comprising a sealed, flexible, sheet plastic, non-conductive evelope, having spaced, generally parallel, major walls;
- alkaline electrolyte within said evelope;
a rigid conductive plate within said envelope having a major face adjacent an inner face of one of said major walls of said envelope of a lateral extent generally conforming to and slightly less than said face of said one major wall;
a connector conductively joined to said conductive plate and extending from the central region of said major face through said one major wall of said envelope at a central region thereof, said one major wall engaging said connector portion passing therethrough;
an adhesive bond between said major face of said plate and said adjacent inner face of said one major wall of said envelope surrounding said extending connector and substantially coextensive with said major face of said plate;
a continuously compressed resilient pad on the exterior of said one major wall of said envelope, said pad being substantially coextensive with said adhesive bond and surrounding said extended connector; and
means to maintain said resilient pad compressed to apply generally uniform pressure through said resilient pad over the coextensive areas of said one major wall of said envelope, said adhesive bond and said conductive plate.
1 Assignment
0 Petitions
Accused Products
Abstract
A battery construction for primary cells of the type comprising a sealed flexible plastic envelope containing electrolyte and the active cell elements wherein an external electrical connection comprises a connector plate within the envelope and that connector pierces the envelope. A seal against the loss of electrolyte from the envelope through the connector aperture is achieved by locating the extension of the connector on the collector plate with portions of the face thereof surrounding it, by forming an adhesive bond between the adjacent inner face of the envelope and the collector plate surrounding the connector extenion, and by imposing external pressure on the adhesive bond by means of a pad which conforms to the envelope and imposes pressure over the bond. The pad is shown as a resilient, elastomeric, sponge sheet positioned between the cell envelope and battery casing.
-
Citations
10 Claims
-
1. An alkaline cell comprising a sealed, flexible, sheet plastic, non-conductive evelope, having spaced, generally parallel, major walls;
- alkaline electrolyte within said evelope;
a rigid conductive plate within said envelope having a major face adjacent an inner face of one of said major walls of said envelope of a lateral extent generally conforming to and slightly less than said face of said one major wall;
a connector conductively joined to said conductive plate and extending from the central region of said major face through said one major wall of said envelope at a central region thereof, said one major wall engaging said connector portion passing therethrough;
an adhesive bond between said major face of said plate and said adjacent inner face of said one major wall of said envelope surrounding said extending connector and substantially coextensive with said major face of said plate;
a continuously compressed resilient pad on the exterior of said one major wall of said envelope, said pad being substantially coextensive with said adhesive bond and surrounding said extended connector; and
means to maintain said resilient pad compressed to apply generally uniform pressure through said resilient pad over the coextensive areas of said one major wall of said envelope, said adhesive bond and said conductive plate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
- alkaline electrolyte within said evelope;
Specification