Manganese dry battery

A technology of manganese dry battery and negative electrode, which is applied in the field of manganese dry battery and can solve problems such as electrolyte leakage

Inactive Publication Date: 2006-12-06
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And there is also the problem of electrolyte leakage from the opening of the negative electrode zinc case 6 and the gap between the sealing body 7 in the part between the positive electrode carbon rod 1 and the sealing body 7

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0034] In this embodiment, the system has Figure 4 The manganese dry battery of the present invention of the structure shown. First of all, it is made of polyethylene by injection molding with image 3 The sealing body 7 of the structure shown.

[0035]Next, a base paper 4 made of kraft paper is placed on the bottom of the negative zinc shell 6, and then a separator 3 made by coating a paste with a starch with good liquid retention properties on the kraft paper is placed on the inner side. Then, a positive electrode mixture 2 composed of a mixture of manganese dioxide, a conductive agent, and an electrolyte is inserted inside the separator 3. The upper surface of the positive electrode mixture 2 is covered with a protective plate 5 made of kraft paper with a hole for inserting the positive electrode carbon rod 1 in the center.

[0036] On the other hand, the positive electrode carbon rod 1 is inserted into the sealing body 7 and the sealant pitch is applied to the groove 7f formed...

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PUM

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Abstract

A manganese dry battery with excellent leak-proof property is provided, in which electrolyte leakage does not occur even if the size of a positive electrode material mixture is increased to meet a demand for improvement in discharge property. In a sealing part, a first circular projection, a second circular projection and a third circular projection are arranged at the bottom in sequence from the center to the outside, and a positive electrode carbon rod supporting part is provided in an innermost periphery portion to have an interval from the first circular projection. A groove between the first projection and the carbon rod is formed to have a substantially rectangular vertical section, kraft board is pressed by flat bottom surfaces of the first and second projections and an opening of the zinc can is fitted between the second and third projections.

Description

Technical field [0001] The present invention relates to a manganese dry battery using a sealing body having an improved shape. Background technique [0002] figure 1 It is a cross-sectional front view of part of a conventional manganese dry battery. Such as figure 1 As shown, in the conventional manganese dry battery, the separator 3 is located inside the negative electrode zinc can 6, and the positive electrode mixture 2 is also inserted inside the separator. The upper surface of the positive electrode mixture 2 is covered by the protective plate 5, and the center of the protective plate 5 The part is equipped with a hole for inserting the positive carbon rod 1. A carbon rod 1 is inserted in the center. The manganese dry battery has a bottom paper 4, a negative terminal plate 8, a sealing ring 9, a heat-shrinkable inner tube 10, a positive terminal plate 11, an insulating ring 12 and a packaging shell 13. [0003] Insert the carbon rod 1 into the hole of the sealing body 7 ma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M2/08H01M6/08H01M2/04
CPCH01M2/0421H01M6/08H01M50/154H01M50/183
Inventor 猪口耕司芦原良平荻野桂治久保勋
Owner PANASONIC CORP
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