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A cylindrical alkaline storage battery has a cylindrical case which contains an electrode assembly and an alkaline electrolyte. The assembly is formed by spirally winding a negative plate, a positive plate and a separator. The negative plate has a substrate having through holes and an active materia

A cylindrical alkaline storage battery has a cylindrical case which contains an electrode assembly and an alkaline electrolyte. The assembly is formed by spirally winding a negative plate, a positive plate and a separator. The negative plate has a substrate having through holes and an active material layer which is disposed on the substrate and has an inner layer, an outer layer and a filler filled in the through holes. Each of the inner layer and outer layers has an overlapping portion which overlaps the adjacent positive plate via the separator. The filler has filling portions distributed in an area of the substrate that is covered by the overlapping portion of the inner and outer layers. The total amount of the active material contained in the overlapping portions and the filling portions ranges from 75% of the total amount of the active material in the negative plate to 100%.

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1. A cylindrical alkaline storage battery comprising: a cylindrical case having a conductivity and an outside diameter within a range from 13.5 mm to 14.5 mm; andan electrode assembly contained in said case together with an alkaline electrolyte, said electrode assembly including a negative plate and

1. A cylindrical alkaline storage battery comprising: a cylindrical case having a conductivity and an outside diameter within a range from 13.5 mm to 14.5 mm; andan electrode assembly contained in said case together with an alkaline electrolyte, said electrode assembly including a negative plate and a positive plate, said negative plate and positive plate being spirally wound with a separator intervened therebetween, said negative plate forming an outermost portion of said electrode assembly and being in contact with an inner wall of said case, whereinsaid positive plate has a thickness of 0.95 mm or greater,said negative plate includes:a negative substrate made of a metal conductive sheet and having a plurality of through holes, an inner surface and an outer surface in view of a radial direction of the electrode assembly, anda negative active material layer deposited on the negative substrate and containing a negative active material, the negative active material layer including,an inner layer covering the inner surface of the negative substrate and having an overlapping portion overlapping said positive plate adjacent thereto via said separator,an outer layer covering the outer surface of the negative substrate and having an overlapping portion, the overlapping portion overlapping said positive plate adjacent thereto via said separator, and a non-overlapping portion which does not overlap the positive plate via the separator and has a thin section, the thin section being thinner than the overlapping portion thereof and wound at an outermost part of the electrode assembly, anda filler filled in the through holes of the negative substrate, the filler having a filling portion distributed in an area of the negative substrate that is covered by one of the overlapping portions of the inner layer and the outer layer on at least one side thereofa total amount of the negative active material contained in the overlapping portions of the inner and outer layers and the filling portion of the filler ranges from 75% to 100% of a total amount of the negative active material contained in said negative plate; and,a ratio of the sum of the negative capacities of the overlapping portion and the filler distributed in the area of the negative substrate that is covered by the overlapping portion on at least one side thereof to the positive capacity is equal to 1.00 or greater. 2. The battery according to claim 1, wherein the inner layer has a non-overlapping portion which does not overlap said positive plate via said separator, and an area of 50% or more of the non-overlapping portions of the inner and outer layers has a thickness equal to or less than half a thickness of the overlapping portions of the inner and outer layers. 3. The battery according to claim 2, wherein a volume of the alkaline electrolyte is such that a capacity-electrolyte ratio obtained by dividing the volume of said alkaline electrolyte by a 0.2 C capacity is 0.85 ml/Ah or less. 4. The battery according to claim 3, wherein said electrode assembly has a cavity in a center thereof, the cavity having an inside diameter equal to or less than 30% of the outside diameter of said case. 5. The battery according to claim 4, wherein said case has an open end and a lid plate fixed to said open end; and said battery further comprises a positive lead laid out between said electrode assembly and said lid plate, the positive lead having an end portion welded to one side of said positive plate and a bent portion bent between said electrode assembly and said lid plate, whereina ratio between a first value and a second value is between 90:100 and 1:1, the first value being obtained by subtracting a lateral cross-sectional area of the cavity from a cross-sectional area of said electrode assembly, the second value being obtained by subtracting the cross-sectional area of said cavity from a cross-sectional area of inner space of said case. 6. The battery according to claim 1, wherein the inner layer has a non-overlapping portion which does not overlap said positive plate via said separator, and an area of 50% or more of the non-overlapping portions of the inner and outer layers contains an amount of the negative active material per unit area equal to or less than half an amount of the negative active material contained in the overlapping portions of the inner and outer layers per unit area. 7. The battery according to claim 1, wherein a volume of the alkaline electrolyte is such that a capacity-electrolyte ratio obtained by dividing the volume of said alkaline electrolyte by a 0.2 C capacity is 0.85 ml/Ah or less. 8. The battery according to claim 1, wherein said electrode assembly has a cavity in a center thereof, the cavity having an inside diameter equal to or less than 30% of the outside diameter of said case. 9. The battery according to claim 1, wherein said case has an open end and a lid plate fixed to said open end; and said battery further comprises a positive lead laid out between said electrode assembly and said lid plate, the positive lead having an end portion welded to one side of said positive plate and a bent portion bent between said electrode assembly and said lid plate, whereina ratio between a first value and a second value is between 90:100 and 1:1, the first value being obtained by subtracting a lateral cross-sectional area of the cavity from a cross-sectional area of said electrode assembly, the second value being obtained by subtracting the cross-sectional area of said cavity from a cross-sectional area of inner space of said case. 10. The battery according to claim 1, wherein said negative plate includes a hydrogen absorbing alloy as the negative active material, and said positive plate includes a metal substrate having a conductive three-dimensional frame and nickel hydroxide particles, as a positive active material, filled in the metal substrate. 11. The battery according to claim 6, wherein said negative plate includes a hydrogen absorbing alloy as the negative active material, and said positive plate includes a metal substrate having a conductive three-dimensional frame and nickel hydroxide particles, as a positive active material, filled in the metal substrate. 12. The battery according to claim 7, wherein said negative plate includes a hydrogen absorbing alloy as the negative active material, and said positive plate includes a metal substrate having a conductive three-dimensional frame and nickel hydroxide particles, as a positive active material, filled in the metal substrate. 13. The battery according to claim 8, wherein said negative plate includes a hydrogen absorbing alloy as the negative active material, and said positive plate includes a metal substrate having a conductive three-dimensional frame and nickel hydroxide particles, as a positive active material, filled in the metal substrate. 14. The battery according to claim 9, wherein said negative plate includes a hydrogen absorbing alloy as the negative active material, and said positive plate includes a metal substrate having a conductive three-dimensional frame and nickel hydroxide particles, as a positive active material, filled in the metal substrate.