Wafer alkaline cell
First Claim
1. In an alkaline cell comprising a housing, a negative and a positive terminal, an anode and a cathode, and an anode current collector, wherein a first portion of said current collector is in contact with said anode, a second portion of said current collector is in contact with said negative terminal, and a third portion of said current collector abuts an electrically insulating member, the improvement comprising:
- at least a portion of the surface of said third portion of said current collector abutting said insulating member includes a sealing metal.
2 Assignments
0 Petitions
Accused Products
Abstract
A wafer alkaline cell of a laminar structure is disclosed. The cell has a pair of opposing sides comprising at least the majority of the boundary surface of said cell and defining a short cell dimension therebetween. The cell comprises an anode assembly and a cathode assembly bonded together to form a laminate structure. The cell comprises a single plastic frame or two separate plastic frames housing the anode and cathode material. The anode current collector may be precoated with a sealing metal forming an alkaline resistant metal oxide film to improve bonding to the frame. The anode assembly has an anode material therein typically comprising zinc and the cathode assembly has a cathode material therein typically comprising manganese dioxide. The cell is durable and preferably rigid, has elongated leak block paths, and resists electrolyte leakage.
57 Citations
105 Claims
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1. In an alkaline cell comprising a housing, a negative and a positive terminal, an anode and a cathode, and an anode current collector, wherein a first portion of said current collector is in contact with said anode, a second portion of said current collector is in contact with said negative terminal, and a third portion of said current collector abuts an electrically insulating member, the improvement comprising:
at least a portion of the surface of said third portion of said current collector abutting said insulating member includes a sealing metal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A wafer alkaline cell comprising a negative and a positive terminal, and a pair of opposing sides comprising at least the majority of the boundary surface of said cell, said opposing sides defining a short cell dimension therebetween, said short dimension being between about 0.5 and 6 mm, said cell comprising an anode assembly and a cathode assembly secured together forming a laminate structure, said anode assembly comprising an anode material and said cathode assembly comprising a cathode material therein, wherein said anode assembly comprises a housing for said anode, and said cathode assembly comprises a housing for said cathode, said anode and cathode assemblies being adhesively bonded together with a separator there-between to from a laminate structure,
wherein said anode housing comprises an anode frame having an inner peripheral edge defining the boundary of an anode cavity, an outer peripheral edge defining the outer boundary of the anode frame, said frame having a front side and opposing back side comprising said peripheral edges; - said anode housing further comprising an anode current collector sheet bonded by adhesive material to the back side of said anode frame so that said anode current collector sheet faces an outer surface boundary of the cell, and wherein the anode material is disposed in said anode cavity so that it is in contact with said anode current collector sheet,
wherein at least a portion of said anode current collector sheet is precoated with a sealing metal or comprises a sealing metal so that at least a portion of said adhesive material contacts at least a portion of said sealing metal when said anode current collector sheet is bonded to said anode frame. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49)
- said anode housing further comprising an anode current collector sheet bonded by adhesive material to the back side of said anode frame so that said anode current collector sheet faces an outer surface boundary of the cell, and wherein the anode material is disposed in said anode cavity so that it is in contact with said anode current collector sheet,
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50. A primary alkaline cell comprising a negative and a positive terminal, and a pair of opposing sides comprising at least the majority of the boundary surface of said cell, said opposing sides defining a short cell dimension therebetween, said cell forming a laminate structure comprising an anode assembly and a cathode assembly, said anode assembly comprising a housing for an anode material comprising zinc and said cathode assembly comprising a housing for cathode material comprising manganese dioxide;
- wherein each of said anode and cathode housings comprises a common unit frame, said common frame forming at least a portion of each of said anode and cathode housings, said anode housing further comprising an anode current collector sheet bonded by adhesive material to the back side of said common frame so that it faces an outer surface boundary of the cell, and wherein the anode material is disposed in said anode cavity so that it is in contact with said anode current collector sheet,
wherein said common frame has an inner peripheral edge defining an anode cavity on a first side of said frame and a cathode cavity on the opposing second side of said frame, wherein said anode material is disposed in said anode cavity on the first side of said frame and said cathode material is disposed in said cathode cavity in the opposing second side of said frame, wherein at least a portion of said anode current collector sheet comprises a metallic sheet precoated with a sealing metal or comprises a sealing metal so that at least a portion of said adhesive material contacts at least a portion of said sealing metal when said anode current collector sheet is bonded to said frame. - View Dependent Claims (51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71)
- wherein each of said anode and cathode housings comprises a common unit frame, said common frame forming at least a portion of each of said anode and cathode housings, said anode housing further comprising an anode current collector sheet bonded by adhesive material to the back side of said common frame so that it faces an outer surface boundary of the cell, and wherein the anode material is disposed in said anode cavity so that it is in contact with said anode current collector sheet,
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72. A primary alkaline cell comprising a negative and a positive terminal, and a pair of opposing sides comprising at least the majority of the boundary surface of said cell, said opposing sides defining a short cell dimension therebetween, said cell comprising an anode assembly and a cathode assembly bonded together forming a laminate structure, said anode assembly comprising an anode material comprising zinc and alkaline electrolyte and said cathode assembly comprising a cathode material comprising manganese dioxide and alkaline electrolyte;
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wherein said anode assembly comprises an anode frame having an inner peripheral edge defining the boundary of an anode cavity, an outer peripheral edge defining the outer boundary of the anode frame, said frame having a front side and opposing back side comprising said peripheral edges;
said anode assembly further comprising an anode current collector sheet bonded to the back side of said frame so that it faces an outer surface boundary of the cell; and
wherein the anode material inserted into said anode cavity so that it is in contact with said anode current collector sheet;
wherein said anode current collector sheet is bonded along the width of said anode frame by employing a first and a second adhesive being substantially different adhesives placed in a juxtaposed relationship to each other along the back side of said anode frame facing said anode current collector sheet;
wherein at least a portion of said anode current collector sheet comprises a metallic sheet precoated with a sealing metal or comprises a sealing metal so that said first and second adhesives contact at least a portion of said sealing metal when said anode current collector sheet is bonded to said anode frame. - View Dependent Claims (73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105)
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Specification