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Cylindrical battery and gasket for use in same

A battery and cylindrical technology, which is applied in the field of cylindrical batteries, can solve problems such as hindering battery discharge performance, and achieve high discharge performance

Active Publication Date: 2014-12-24
FDK ENERGY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this time, it is necessary to use a positive electrode mixture having a small size so as not to be in contact with the stress buffer portion 47, which hinders an increase in the volume of the positive electrode active material, thus hindering the improvement of the discharge performance of the battery as a result.

Method used

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  • Cylindrical battery and gasket for use in same
  • Cylindrical battery and gasket for use in same
  • Cylindrical battery and gasket for use in same

Examples

Experimental program
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Embodiment Construction

[0033] One embodiment of the present invention will be described in detail below with reference to the drawings.

[0034] figure 1 It is a cross-sectional view showing a schematic configuration of the alkaline battery 10 (cylindrical battery) in this embodiment. In addition, the alkaline battery 10 of this embodiment is an LR6 type (No. 5) battery.

[0035] Such as figure 1 As shown, the alkaline battery 10 has a bottomed cylindrical positive electrode can 11 (battery can), an annular positive electrode mixture 12 embedded along the inner surface of the positive electrode can 11, and a bottomed positive electrode mixture inserted into the inside of the positive electrode mixture 12. A cylindrical separator 13 , a gel-like negative electrode mixture 14 disposed in the hollow portion of the separator 13 serving as the center of the positive electrode can 11 , and a current collector 16 attached to the opening 11 a of the positive electrode can 11 .

[0036] The positive ele...

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PUM

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Abstract

Provided is a cylindrical battery gasket that will not functionally deteriorate in absorbing stress caused by the gasket extending radially upon the battery being sealed, thus performing higher in discharging electricity by the contents of the battery being secured. The gasket 23 is provided with a boss part (32) that comprises a central hole 31 through which a negative electrode collector 22 is inserted, and with a canister contact part 33 that is affixed in place and in contact with a cathode canister 11, and with a disk-shaped part 34 that is provided to connect the boss part 32 to the canister contact part 33, and with a stress buffering part 37 that is provided on the way to the disk-shaped part 34. The stress buffering part 37 has a first bent part 37a and a second bent part 37b, both of an acute angle, and is set nearer the center of the cathode canister 11 than to the positive electrode mixture 12, upon the gasket being installed in the cathode canister 11.

Description

technical field [0001] The present invention relates to a cylindrical battery gasket for sealing an opening of a battery can, and a cylindrical battery including the cylindrical battery gasket. Background technique [0002] Generally, a cylindrical alkaline battery includes a bottomed cylindrical positive electrode tank, an annular positive electrode mixture accommodated in the positive electrode tank, a gel-like negative electrode mixture arranged in the center of the positive electrode tank, and a gel-like negative electrode mixture between the positive electrode mixture and the gel. A bottomed cylindrical separator between the gel-like negative electrode mixture and a current collector mounted on the opening of the positive electrode tank. The structure of the current collector includes a negative terminal plate, a negative current collecting element, and a sealing gasket. The negative electrode terminal plate seals the opening of the positive electrode can with a sealin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M2/08H01M2/12H01M50/184H01M50/186H01M50/193
CPCH01M2/08H01M2/1229H01M2/0413H01M2/022Y02E60/10H01M50/107H01M50/171H01M50/325H01M50/184H01M50/186H01M50/193
Inventor 山崎龙也村上秀二都筑秀典
Owner FDK ENERGY CORP