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Button cell negative electrode top and negative electrode combination, and alkali button cell

A button battery and negative electrode technology, which is applied to the electrodes of alkaline storage batteries, secondary batteries, alkaline storage batteries, etc., can solve the problems of zinc powder contamination, poor leakage prevention effect, and affecting the sealing effect of the negative electrode top and sealing ring, etc. Achieve improved leak-proof performance, good sealing effect, and good bonding effect

Inactive Publication Date: 2017-07-18
宁波必霸能源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the lower end of the negative pole top is arc-shaped, the amount of glue left on the arc portion of the negative pole top due to quick dipping is insufficient, which will affect the sealing effect between the negative pole top and the sealing ring, and the leak-proof effect is not good; at the same time, the negative pole top There is zinc powder inside, and a large amount of glue cannot be manually injected, otherwise it will contaminate the zinc powder and affect the electrical performance of the button battery

Method used

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  • Button cell negative electrode top and negative electrode combination, and alkali button cell
  • Button cell negative electrode top and negative electrode combination, and alkali button cell
  • Button cell negative electrode top and negative electrode combination, and alkali button cell

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Embodiment Construction

[0024] Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are only descriptive and exemplary, and should not be construed as limiting the protection scope of the present invention.

[0025] Alkaline button batteries are widely used in electronic toys, Bluetooth wireless products, electronic keys, digital products, electric tools, audio-visual equipment, electronic scales, radios, instruments, computer motherboards, ear thermometers and other electrical appliances.

[0026] The working principle of the alkaline button battery: Zinc is used as the negative electrode active material, manganese dioxide is used as the positive electrode active material, and an aqueous solution of sodium hydroxide or potassium hydroxide is used as the electrolyte. The negative electrode zinc loses the battery to form +2 valent zinc ions, and oxidation reaction o...

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Abstract

The invention discloses an alkali button cell and a negative electrode combination. The alkali button cell comprises a positive electrode cup, a negative electrode top, an annular sealing ring, a positive electrode cake, a diaphragm and zinc paste, wherein the positive electrode cup and the negative electrode top are insulated through the annular sealing ring; the positive electrode cake and the zinc plate are isolated through the diaphragm; the negative electrode top comprises an integrally-formed central region, and an annular bending part on the periphery of the central region; the annular bending part comprises an annular inner wall, an annular outer wall and an annular connecting part between the annular inner wall and the annular outer wall; the lower end plane of the annular connecting part is an annular plane which is 0.2-0.4mm in width; and the lower end plane of the annular connecting part is immersed with glue and then fixed with the annular sealing ring through gluing. The alkali button cell has the advantages as follows: the lower end plane of the annular connecting part of the negative electrode top is the annular plane which is 0.2-0.4mm in width; and by designing the circular-arc-shaped lower end of the negative electrode top into the planar shape, when the lower end plane of the negative electrode top is immersed with glue, the planar-shaped contact part can be glued with more glue, so that the gluing effect between the negative electrode top and the sealing ring can be better.

Description

technical field [0001] The invention relates to the field of button batteries, in particular to a button battery negative pole top and negative electrode combination and an alkaline button battery. Background technique [0002] In the era of mercury-containing primary zinc-manganese button batteries, the top and bottom of the negative electrode can play a good leak-proof performance without printing glue. Because mercury is a good corrosion inhibitor, it can effectively absorb the gas generated inside the battery, so that the battery will not produce gas swelling and leakage. However, mercury is a heavy metal that is harmful to the environment. The national environmental protection order prohibits domestic sales or production of mercury-containing batteries. Since then, the production of alkaline manganese batteries has entered a mercury-free era. [0003] The production of mercury-free batteries is a big test for the battery's leak-proof performance. The alkaline button b...

Claims

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Application Information

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IPC IPC(8): H01M4/24H01M10/28
CPCH01M4/24H01M10/285Y02E60/10Y02P70/50
Inventor 冯远强施龙
Owner 宁波必霸能源有限公司
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