CN2303391Y - Column like zinc and air cell with internal oxygen having flat air electrode - Google Patents
Column like zinc and air cell with internal oxygen having flat air electrode Download PDFInfo
- Publication number
- CN2303391Y CN2303391Y CN 97241295 CN97241295U CN2303391Y CN 2303391 Y CN2303391 Y CN 2303391Y CN 97241295 CN97241295 CN 97241295 CN 97241295 U CN97241295 U CN 97241295U CN 2303391 Y CN2303391 Y CN 2303391Y
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- electrode
- air
- air electrode
- zinc
- flat
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- Expired - Fee Related
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- Y02E60/128—
Abstract
The utility model relates to a column like zinc and air cell with internal oxygen having a flat air electrode. The anode of the utility model is an air electrode, and the cathode of the utility model is a zinc cell. The utility model is characterized in that the air electrode is flat internal oxygen-type air electrode, the relatively two larger side surfaces of the air electrode are composed of two plate electrodes, a metal rod is installed on an anode cap, and the metal rod is tightly connected with the electrode sheet of the inner wall of the air chamber of the air electrode. The utility model has the advantages of high cell capacity, large specific energy and simple production process.
Description
The utility model relates to a battery, especially an oxygen formula cylinder zinc-air battery in flat air electrode.
The electrochemical principle of the reaction of the zinc-air battery can be expressed as follows:
and (3) positive electrode:
negative electrode:
and (3) battery reaction:
from the reaction it can be seen that: the oxygen consumed by the positive plate in the reaction is derived from air, which is inexhaustible, as long as the air electrode is kept normal, the battery capacity is only determined by the quantity of zinc of the negative electrode, which determines that the zinc-air battery has the characteristics of high capacity and high specific energy, and in addition, the advantages of balanced working voltage, abundant raw materials, low price and the like are always the key points for the power supply industry to produce products. But the structure design is difficult to implement due to the complexity of the process technology. At present, the commercialization is limited to square and small button types, and the application is limited. Although some researchers at home and abroad are on the land and sky in the power technology 2<5>1980; h.r.espig and d.f.porter "8 th International Power source-espymplosis" p.535-552 (1972): the preparation method of the cylindrical zinc-air battery is reported, but the preparation method adopts an external oxygen type air electrode, has complex process, does not completely solve the problem of alkali liquor leakage, is difficult to implement industrial production, and cannot form commercial production so far.
An object of the utility model is to provide a rational in infrastructure, simple process, sealed effectual, be applicable to the standardized overall dimension that has of scale industrial production. The flat air electrode internal oxygen type cylindrical zinc-air battery which can be exchanged with the battery with the same type sold in the market has high capacity and large specific energy.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a flat air electrode internal oxygen type cylindrical zinc-air battery. The positive electrode is air electrode, the negative electrode is zinc electrode, the air electrode is arranged in the center of the battery shell, the zinc electrode is pasty zinc paste, the zinc paste is filled between the outer side of the air electrode and the battery shell, the zinc paste and the air electrode are separated by a diaphragm, the battery shell is a negative current collector, the top of the air electrode is provided with a sealing ring and a positive electrode cap, and the positive electrode cap is provided with an air inlet hole. The utility model is characterized in that the air electrode is a flat square internal oxygen type air electrode, two relative big sides of the air electrode are composed of two flat plate electrode slices, a metal bar is connected on the positive cap cover, and the metal bar is closely connected with the electrode slice of the air chamber inner wall of the air electrode.
The utility model has the characteristics of as follows: (1) the positive electrode adopts two flat plate pole pieces and a sealing ring to be connected and injected into an integral flat square air electrode, so that the processing and the equipment are convenient; (2) the negative electrode is in contact with the copper shell, so that the current collecting area is increased, the utilization rate of the negative electrode is improved, and the high-capacity advantage of the zinc-air battery is exerted; (3) the positive cap is covered with the welding drainage needle, and the cap and the positive electrode are connected by splicing, so that the production process is simplified, and the industrialized continuous operation is facilitated; (4) the air inlet holes are formed in the two sides of the end of the anode cap, so that the packaging is facilitated; (5) the mature nickel-cadmium battery packaging technology is adopted, the battery sealing performance is guaranteed, and the phenomenon of alkali leakage is avoided.
The present invention will be described in detail with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view of the structure of the air electrode.
Fig. 3 is a top view of fig. 2.
Fig. 4 is a schematic diagram of the structure of the positive electrode cap.
1-positive electrode cap; 2-air inlet holes; 3-sealing ring; 4, a drainage needle; 5-electrode slice; 6-air electrode; 7-a separator; 8-zinc paste; 9-battery case.
Referring to fig. 1 to 4, the present invention adopts a flat square internal oxygen type air electrode, the two opposite large sides of the air electrode are composed of two flat electrode plates, the two flat electrode plates, an air electrode frame and a sealing ring are integrally formed by injection molding, and they are connected into a whole. The electrode plateThe catalyst consists of a current collector (comprising foamed nickel, a nickel net or a copper net), a waterproof breathable film (comprising acetylene black and polytetrafluoroethylene) and a catalytic film (comprising high specific surface active carbon, a catalyst and PVDF or polytetrafluoroethylene), and is prepared by spraying a 0.1 +/-0.05 mm thick catalytic layer (60-90% activity recovery, 40-10% manganese dioxide and 5-25% PVDF) on a 0.6-1.4 mm thick conductive waterproof breathable film (20-80% polytetrafluoroethylene and 80-20% acetylene black are mixed and rolled on a double-roller rolling machine) for drying, then pasting a 0.08-0.15 mm thick foamed nickel current collector on one side of the conductive waterproof breathable film, placing the nickel current collector on an oil press, and placing the nickel current collector on a 400 MP/cm2And (4) forming under pressure. Cutting the electrode plate into 42 × 10mm, injection molding in special mold to obtain flat air electrode core with sealing ring at upper end, sleeving diaphragm sleeve on the outer side of the electrode core, and sealing the electrode core with diaphragm sleeveEmbedding positive cap cover on the air electrode sealing ring, welding a metal bar as drainage needle on the positive cap cover, connecting the drainage needle with the inner wall of air chamber of air electrode tightly, having good electric contact, symmetrically opening one or two pairs of air inlet holes on the side of positive cap cover, injecting paste negative zinc paste into the battery shell, inserting the air electrode into the battery shell, and finally adopting mechanical sealing. The external dimension of the assembled battery is as follows: diameter of Height of The open voltage of the battery is more than or equal to 1.4V, the capacity of the battery is more than or equal to 4.0 Ah, and the working voltage is 1.2V. It is suitable for continuous low-power operation, especially for BP set, remote controller, quartz clock, calculator and other low-power electronic appliancesAnd (4) a product.
Claims (2)
1. A flat air electrode internal oxygen type cylindrical zinc-air battery is composed of air electrode as positive electrode, zinc electrode as negative electrode, air electrode in the center of battery shell, pasty zinc paste filled between the external surface of air electrode and battery shell, diaphragm separating zinc paste from air electrode, negative current collector in the battery shell, sealing ring on the top of air electrode, positive cap with air inlet, and air outlet. The utility model is characterized in that the air electrode is a flat square internal oxygen type air electrode, two relative big sides of the air electrode are composed of two flat plate electrode slices, a metal bar is connected on the positive cap cover, and the metal bar is closely connected with the electrode slice of the air chamber inner wall of the air electrode.
2. The flat air electrode internal oxygen type cylindrical zinc-air battery according to claim 1, wherein said seal ring is integrally connected to the air electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97241295 CN2303391Y (en) | 1997-09-19 | 1997-09-19 | Column like zinc and air cell with internal oxygen having flat air electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97241295 CN2303391Y (en) | 1997-09-19 | 1997-09-19 | Column like zinc and air cell with internal oxygen having flat air electrode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2303391Y true CN2303391Y (en) | 1999-01-06 |
Family
ID=33950800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97241295 Expired - Fee Related CN2303391Y (en) | 1997-09-19 | 1997-09-19 | Column like zinc and air cell with internal oxygen having flat air electrode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2303391Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102820472A (en) * | 2012-08-07 | 2012-12-12 | 河南科技大学 | Manganese-aluminum containing anode material and preparation method thereof, as well as air cell prepared by using anode material |
-
1997
- 1997-09-19 CN CN 97241295 patent/CN2303391Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102820472A (en) * | 2012-08-07 | 2012-12-12 | 河南科技大学 | Manganese-aluminum containing anode material and preparation method thereof, as well as air cell prepared by using anode material |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |