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Zinc-silver accumulator capable of work at low temperature

A zinc-silver battery and working technology, applied in silver batteries, alkaline batteries and other directions, can solve problems such as poor working performance of zinc-silver batteries, and achieve the effects of improving electrochemical performance, improving viscosity, and reducing internal resistance

Active Publication Date: 2011-11-16
GUIZHOU MEILING POWER SUPPLY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a zinc-silver storage battery working at low temperature, so as to overcome the shortcomings of the zinc-silver storage battery in the environment of 5°C, such as poor working performance.

Method used

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  • Zinc-silver accumulator capable of work at low temperature
  • Zinc-silver accumulator capable of work at low temperature

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Embodiment Construction

[0013] Embodiments of the present invention: as figure 1 As shown, the zinc-silver battery is mainly composed of a negative current collector 1, a positive current collector 2, an insulating tape 3, a separator 4, a negative electrode 5, an electrolyte 6, a positive electrode 7, and a packaging bag 8.

[0014] The positive electrode 7 and the negative electrode 5 can be prepared by sintering silver electrode technology and pasted zinc electrode, and 3.4% mercury oxide is added to the negative electrode. The positive electrode 7 and the negative electrode 5 cannot be in direct contact, and must be separated by a separator 4, and the pole group is formed in the form of laminations. The positive terminal of the pole group is drawn out through the positive current collector bar 2, and the negative terminal is drawn out through the negative current collector bar 1, and the insulating tape 3 can be fixed on the positive current collector bar 2 and the negative current collector bar ...

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Abstract

The invention discloses a zinc-silver accumulator capable of work at a low temperature. A cell is formed by a positive electrode (7), a diaphragm (4) and a negative electrode (5); the cell and an electrolyte (6) are encapsulated in an encapsulation bag (8); the positive electrode (7) is welded with a positive busbar (2); the negative electrode (5) is welded with a negative busbar (1); the positive busbar (2) and the negative busbar (1) are fixedly provided with insulating tapes (3); the electrolyte (6) is a KOH (potassium hydroxide) aqueous solution of which the concentration is 25-45%; LiOH (lithium hydroxide) with the mass percent being 1.2-2.6% added to the electrolyte (6) solution is taken as an electrolyte additive; and mercuric oxide with the mass percent being 1.0-4.0% added to a negative active substance is taken as a zinc electrode additive. At the temperature of 5 DEG C, the zinc-silver accumulator can work reliably without heating before use.

Description

technical field [0001] The invention relates to a zinc-silver accumulator. Background technique [0002] Zinc-silver batteries have the advantages of stable discharge voltage, large specific energy, high specific power, safety and reliability, etc., and are used in some special applications that require relatively high battery performance. However, the performance of zinc-silver batteries is seriously affected by the working environment temperature. The optimum working temperature is above 25°C, and the performance of the battery deteriorates when the temperature decreases, especially when the temperature is lower than 20°C, the performance of the battery pack deteriorates seriously. In order to make it work reliably in an environment below 25°C, the battery pack needs to be heated by an external power supply through the heating system inside the battery pack before use, and the heating time generally reaches about 30 minutes. For some special application conditions, the wo...

Claims

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Application Information

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IPC IPC(8): H01M10/32H01M10/26
CPCY02E60/124Y02E60/10
Inventor 胥涛魏俊华石斌余波陈铤袁再芳袁晓文刘江涛何玉彬李萌
Owner GUIZHOU MEILING POWER SUPPLY CO LTD
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