Hitachi Maxell, Limited

Minajuro Ushijima

Shinichi Iwamoto

Shoichiro Tateishi

Koji Koide

Makoto Urade

Noriyuki Ito

Tetsuo Izu

There is provided an alkaline battery produced by sealing in an outer package body: a positive mixture containing at least one selected from manganese dioxide and a nickel oxide, a conducting agent, and an alkaline electrolytic solution (A) containing potassium hydroxide; a separator; and a negative mixture containing zinc alloy powder, a gelling agent, and an alkaline electrolytic solution (B) containing potassium hydroxide where a concentration of potassium hydroxide of the alkaline electrolytic solution (A) is 45 wt % or more, and a concentration of potassium hydroxide of the alkaline electrolytic solution (B) is 35 wt % or less. Because of this, an alkaline battery can be provided, which has desirable load characteristics, prevents the generation of gas, prevents a decrease in a storage property due to the reaction with an electrolytic solution, and has heat generation behavior suppressed at a time of occurrence of a short-circuit.

Alkaline battery and method for producing the same

The present invention discloses an alkaline dry cell with a high capacity having a superior liquid leak resistant property. In this alkaline dry cell, the thickness of the trunk portion of an external can is made thinner than 0.18 mm, and the thickness of the sealing edge portion of the external can is set to not less than 1.4 times the thickness of trunk portion. An anode terminal plate is used as a supporting member for a sealing member. Over the entire outer circumferential portion of the anode terminal plate is placed a curved portion having an average curvature radius of not more than 1 mm, which shows a virtually C-letter shape or an arc shape in its cross-section obtained by cutting the anode terminal plate through its center in the thickness direction.

Alkaline dry cell

The present invention discloses an alkaline dry cell containing a cathode and an anode, a separator and an electrolyte solution that are housed inside an external can, and a resin sealing member and a supporting member for supporting the sealing member with an inner circumferential side that are attached to an opening edge of the external can, wherein the opening edge of the external can is sealed by tightening the resin sealing member with the external can and the supporting member.

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Nishinomiya, Japan

Minajuro Ushijima