Unlock instant, AI-driven research and patent intelligence for your innovation.

Alkaline dry cell

A dry battery, alkaline technology, applied in the direction of dry batteries, battery pack components, electrodes of primary batteries, etc., can solve the problems of easy processing, difficulty, deformation of packaging shell, etc.

Inactive Publication Date: 2009-07-22
HITACHI MAXELL ENERGY LTD
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the shell thickness of the package made of killed steel (aluminum-killed steel) generally used in alkaline dry batteries is reduced, it is easy to cause or difficult to process, or the package can be deformed during the transportation process of the package or the handling process during battery assembly. question

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Alkaline dry cell
  • Alkaline dry cell
  • Alkaline dry cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～4

[0111] The 0.25mm thick static steel plate is deep-drawn to form the packaging shell of the single-size alkaline dry battery. At this time, the shell thickness of the sealing part remains the original steel plate thickness, and the thickness of the cylinder part is processed to be thinner than the original steel plate. In Table 1, the shell thicknesses of the cylindrical portion and the sealing portion of the package used in Examples 1 to 4 of the present invention are combined with those of the package used in the comparative example described later.

[0112] Furthermore, in Examples 1 to 4, in order to prevent the positive terminal from being dented when the battery is dropped, the positive terminal part 1b of the package case is also processed to be thicker than the case thickness of the cylindrical part.

[0113] Next, pressurize 11.0 g of the positive electrode material obtained by mixing manganese dioxide, graphite and water obtained by the electrolysis method in a ratio...

Embodiment 5

[0124] 11.0 g of the positive electrode material obtained by mixing electrolytic manganese dioxide, graphite and water in a ratio (weight ratio) of 92:5:3 was processed into a cylindrical shape with an inner diameter of 9.1 mm, an outer diameter of 13.3 mm, and a height of 43.0 mm. Insert the positive electrode into the packaging case for single-size alkaline dry batteries. Next, a groove was applied at a position of 3.7 mm in the height direction from the opening end of the package case. This is to support the sealing body at the groove position when the sealing body is inserted later, so that it cannot be squeezed into the groove position. Furthermore, asphalt was applied to the inner side of the package case from the opening end to a portion of 3.7 mm in the height direction in order to improve the adhesion between the package case and the sealing body.

[0125]Secondly, a non-woven fabric composed of vinylon and rayon with a thickness of 100 μm, and three layers of overla...

Embodiment 6

[0129] A single-size alkaline dry battery was produced in the same manner as in Example 5 except that the average radius of curvature of the curved portion of the outer peripheral portion of the metal plate (negative terminal plate) was set to 0.8 mm.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
heightaaaaaaaaaa
Login to View More

Abstract

An alkaline dry cell, wherein a cathode and an anode, a separator placed between these electrodes, and electrolyte are housed in a external can with a cylindrical shape, which having a bottom lid. A resin sealing member and a supporting member for supporting it from the inner circumferential portion are mounted in the external can, and the opening of the external can is sealed by tightening the resin sealing member with the external can and the supporting member. In such a configuration, a metal plate also servers as anode terminal plate is used as the supporting member; the entire outer circumferential portion of the metal plate serves as holding portion of resin sealing member, and a curved portion is formed into a curved shape with an average curvature radius of not more than 1 mm and shows an arc shape over an angle range greater than 90 degrees is installed on the cross section formed by cutting the metal plate in the thickness direction through the center thereof.

Description

technical field [0001] The invention relates to a sealing technology of a cylindrical alkaline dry battery. Background technique [0002] "Overall Structure of Cylindrical Alkaline Dry Battery" [0003] Existing cylindrical alkaline dry batteries are, for example, as Figure 15 As shown, inside a bottomed cylindrical packaging case 1 (unit chamber C) that also serves as a positive terminal, a positive electrode 2 and a negative electrode 4, a separator 3 disposed therebetween, a nail-shaped negative electrode collector rod 5 inserted into the negative electrode 4, and dipped The separator 3 and the electrolytic solution (not shown) of the positive electrode 2 seal the opening end 1 a of the package case 1 so that the electrolytic solution in the cell C does not leak out. [0004] "Shell Thickness of Encapsulation Shell" [0005] As a cylindrical alkaline dry battery, the outer diameter of the single-size alkaline dry battery is 13.5 to 14.5mm according to the JIS standard,...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H01M2/08H01M2/00H01M4/06H01M6/02H01M6/06H01M6/08H01M50/184H01M50/186
Inventor 浦出诚立石昭一郎小出浩二岩本真一牛岛三七十郎
Owner HITACHI MAXELL ENERGY LTD