CN112670512A - Alkaline button cell and positive plate of button cell - Google Patents
Alkaline button cell and positive plate of button cell Download PDFInfo
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- CN112670512A CN112670512A CN202011549189.1A CN202011549189A CN112670512A CN 112670512 A CN112670512 A CN 112670512A CN 202011549189 A CN202011549189 A CN 202011549189A CN 112670512 A CN112670512 A CN 112670512A
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- positive plate
- button cell
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Abstract
The invention discloses an alkaline button battery, which comprises a cover-type negative electrode cover, a positive electrode shell covering the negative electrode cover, negative electrode zinc paste arranged in the negative electrode cover, a positive electrode plate containing manganese or silver and stacked with the negative electrode zinc paste, a diaphragm positioned between the positive electrode plate and the negative electrode zinc paste, and a sealing ring positioned between the negative electrode cover and the positive electrode shell in a surrounding way, wherein the positive electrode plate is provided with a steel mesh which is tiled. The metal screen mesh is added into the positive plate, so that the compression resistance, bending resistance and crack resistance of the positive plate are greatly improved, the positive plate can bear larger sealing force and still keep the shape of the positive plate not to deform or to deform less, the sealing strength is further improved, and therefore the liquid leakage resistance of the button battery is improved, and the storage period and the quality guarantee period of the battery are prolonged. The invention also discloses a button cell positive plate for manufacturing the alkaline button cell.
Description
Technical Field
The invention relates to a positive plate for a button cell and an alkaline button cell comprising the positive plate.
Background
The alkaline button cell has been developed and widely used in various small electronic devices, and the small zinc-manganese and zinc-silver-manganese button cell has been widely used in human life, such as quartz watches, calculators, medical instruments such as small thermometers, various toys with sounding and lighting lamps, music shengdan cards, birthday cards, children teaching articles, remote controllers, and the like. The technical progress of the button cell in the last 10 years is improved from mercury-containing to mercury-free, safety and explosion prevention, but most manufacturers for producing the button cell only promise to store and guarantee the shelf life for one year, and the shelf life is required to be more than 12 months including IEC international standard and national standard.
The reason is that the sealing of the button cell with small size is realized by pressing a sealing ring and a negative cover on a positive shell through a sealing mould, and the bearing capacity of the base of the sealing ring and the negative cover is supported on a positive plate pressed by mixed powder or fine particles which take manganese powder, silver oxide powder and graphite as main materials. The hardness, compression resistance, bending resistance and crack resistance of the positive plate are not enough, which is shown in that when the pressure is transmitted to the positive plate when the positive shell of the button cell is sealed, if the pressure is too large and the pressure is extruded, the pressed part at the periphery of the positive plate can generate a larger proportion of settlement, and the uncompressed part in the middle of the positive plate can correspondingly generate a larger proportion of swelling. Therefore, the sealing force of the battery cannot be too high during production and assembly so as to avoid leakage and short circuit caused by too much deformation of the positive plate. Due to the limited sealing force and low sealing pressure during packaging, leakage with different sizes can occur in the storage and quality guarantee period of the button cell in the spring, summer, autumn and winter seasons during different temperatures, humidity, thermal expansion and cold contraction processes, and the quality guarantee period of the cell of most manufacturers is only 12 months.
Therefore, the market urgently needs an alkaline zinc-manganese and zinc-silver battery which can improve the liquid leakage resistance and prolong the storage shelf life.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide an alkaline button cell which can improve the liquid leakage resistance and prolong the storage and quality guarantee period, and a cell positive plate for producing the alkaline button cell.
In order to overcome the defects of the prior art, the invention adopts the technical scheme that: the utility model provides an alkaline button cell, its includes cover type negative pole lid, covers the positive pole shell of negative pole lid, locate negative pole calamine cream in the negative pole lid, with the negative pole calamine cream stacks the positive plate that contains manganese or silver that sets up, is located the diaphragm between positive plate and the negative pole calamine cream, is located and encircles the sealing washer that sets up between negative pole lid and the positive pole shell, the positive plate is equipped with the metal mesh that the tiling set up.
As an improvement of the technical scheme of the alkaline button cell, the metal mesh is embedded in the upper end part of the positive plate.
As an improvement of the technical proposal of the alkaline button cell, the metal mesh is laid on the upper surface of the positive plate and embedded into the positive plate to form a whole.
As an improvement of the technical scheme of the alkaline button cell, the diameter of the metal mesh is smaller than that of the positive plate and larger than that of the negative cover.
The invention is an improvement of the technical proposal of the alkaline button cell, and the metal mesh is an iron mesh or a steel mesh or an alloy steel mesh or a copper alloy mesh.
The invention also provides the technical scheme as the component: the utility model provides a button cell positive plate for place in button cell's anodal shell, button cell positive plate includes the positive plate body, and the tiling is located the metal mesh of positive plate body.
As an improvement of the technical scheme of the button battery positive plate, the metal mesh is embedded in the upper end part of the positive plate body or laid on the upper surface of the positive plate body and embedded into the positive plate to form a whole.
As an improvement of the technical scheme of the button battery positive plate, the diameter of the metal net is smaller than that of the positive plate body and larger than that of the negative cover of the corresponding battery.
As an improvement of the technical scheme of the positive plate of the button battery, the metal mesh is an iron mesh or a steel mesh or an alloy steel mesh or a copper alloy mesh.
The invention has the beneficial effects that: in adding the positive plate with metal material's screen cloth, like the effect of adding the reinforcing bar in the cement concrete, promoted positive plate resistance to compression, bending resistance, crack resistance by a wide margin, can bear bigger dynamics of sealing and still can keep the positive plate shape indeformable or less deformation, and then promoted the sealed intensity of sealing to improve button cell's the leak resistance ability and prolonged the shelf life and the shelf life of battery. Meanwhile, the metal mesh is added into the positive plate, so that the conductivity is increased, the positive material can be fully utilized, and the discharge performance of the positive plate is more stable. The button cell manufactured by the button cell positive plate has the advantages of good sealing performance, long shelf life and good quality.
Drawings
Fig. 1 is a schematic structural view of an embodiment of an alkaline button cell of the present invention.
FIG. 2 is a schematic structural diagram of the metal mesh in the positive plate of the button cell in the example.
Detailed Description
The following describes embodiments of the present invention in detail.
Referring to fig. 1, there is shown an alkaline button cell according to the present invention, which comprises a cover-type negative electrode cover 12, a positive electrode casing 11 covering the negative electrode cover 12, a negative electrode zinc paste 16 disposed in the negative electrode cover, a positive electrode sheet 13 containing manganese or silver stacked on the negative electrode zinc paste 16, a separator 15 disposed between the positive electrode sheet 13 and the negative electrode zinc paste 16, and a sealing ring 19 disposed between the negative electrode cover 12 and the positive electrode casing 11, wherein the positive electrode sheet is provided with a metal mesh 18 disposed in a flat manner. The structure of metal mesh is as shown in fig. 2, the effect of adding the screen cloth of metal material into the positive plate 13 is like the effect that the concrete adds the reinforcing bar, thereby greatly improving the compression resistance, bending resistance and crack resistance of the positive plate, still keeping the shape of the positive plate not to deform or to deform less by bearing larger sealing force, further improving the sealing strength, thereby improving the liquid leakage resistance of the button cell and prolonging the storage period and quality guarantee period of the cell. Meanwhile, the metal mesh 18 is added into the positive plate 13, so that the conductivity is increased, the positive material can be fully utilized, and the discharge performance of the positive plate is more stable.
The metal mesh 18 is buried in the upper end of the positive plate 13, the upper end is the part of the positive plate with larger stress when the button cell is assembled, the metal mesh 18 is arranged to improve the local strength of the upper end of the positive plate 13, so that the positive plate can resist larger installation extrusion force without deformation, and therefore the button cell can be assembled by using larger pressure, the positive plate 13 cannot be deformed, and the defects of bending, cracking and the like cannot be caused. Therefore, the combination strength between the cathode cover 12 and the anode shell 11 is improved, the performance of preventing the leakage of the battery is improved, and the performance of preventing the leakage of the battery from being deformed even under the temperature change in four seasons is also improved, so that the quality of the button battery product is improved, and the storage period and the quality guarantee period of the button battery product are prolonged. The metal mesh is arranged at the stress position and the easy-deformation position, so that the stress strength is improved, the deformation resistance is enhanced, the periphery of the positive plate 13 can resist higher pressure, and the middle part has higher rigidity and is not easy to deform and bulge.
Or, the metal mesh 18 is laid on the upper surface of the positive plate 13 and embedded into the positive plate 13 to form a whole, so that the effect of well increasing the strength of the positive plate 13 is achieved, higher assembly extrusion pressure can be resisted, the bulging deformation amount of the middle part of the positive plate 13 is smaller, the structural stability of the button cell is ensured, the cell quality is improved, and the storage shelf life is prolonged.
Preferably, the metal mesh 18 is smaller than the cross section of the positive plate 13 and larger than the outer contour of the lower end of the negative cover 12, so that the metal mesh can support the peripheral part to enhance the peripheral strength, and the metal mesh 18 is hidden in the positive plate, so that the positive plate is not layered, the overall structure is complete, and the overall strength is not affected.
Further, the diameter of the metal mesh 18 is equal to half of the sum of the diameter of the positive plate 13 and the outer diameter of the lower end of the negative cover 12, so that better overall strength can be ensured, and the effect of resisting extrusion force of the metal mesh is improved.
In particular, the metal mesh 18 is an iron mesh or a steel mesh or an alloy steel mesh or a copper alloy mesh. The metal mesh made of the steel material and the alloy material thereof can provide better rigidity, so that the metal mesh has enough strength to resist the extrusion force of other components to the positive plate during installation, the positive plate is ensured to bear larger sealing (packaging) pressure during the battery assembling process and is not easy to deform, and the deformation amount of the periphery collapse and the middle bulge is smaller. The use of copper or copper alloy mesh can also have substantially equivalent efficacy.
In the component embodiment, a button cell positive plate for place in button cell's anodal shell, button cell positive plate 13 includes the positive plate body, and the tiling is located the metal mesh 18 of positive plate body to promoted positive plate resistance to compression, bending resistance, anti-cracking strength by a wide margin, can bear bigger dynamics of sealing and still can keep the positive plate shape indeformable or less deformation, and then promoted the sealed intensity of sealing, thereby improved button cell's the leak resistance ability and prolonged the shelf life and the shelf life of battery. Meanwhile, the metal mesh is added into the positive plate, so that the conductivity is increased, the positive material can be fully utilized, and the discharge performance of the positive plate is more stable.
The metal mesh 18 is embedded in the upper end of the positive electrode sheet body. The upper end of the positive plate 13 is the part of the positive plate which is stressed more greatly when the button battery is sealed and packaged, and the metal mesh 18 is arranged to improve the local strength of the upper end of the positive plate 13, so that the positive plate can resist larger sealing extrusion force without deformation, and therefore the button battery can be assembled by using larger sealing pressure without causing excessive deformation, bending, cracking and other defects of the positive plate. Therefore, the combination strength between the negative electrode cover 12 and the positive electrode shell 11 is improved, the performance of preventing the leakage of the battery is improved, the performance of enduring the temperature change in four seasons and being not easy to deform and leak is also improved, thereby improving the quality of the button battery product and prolonging the storage period and the quality guarantee period of the button battery product. The metal net is arranged at the stress position and the easy-deformation position, so that the stress strength is improved, the deformation resistance is enhanced, the periphery of the positive plate can bear higher pressure, and the middle part has higher rigidity and is not easy to deform and bulge.
Preferably, the metal mesh 18 is smaller than the cross section of the positive plate body and larger than the outer contour of the lower end of the negative cover of the corresponding battery, so that the metal mesh can play a role in supporting peripheral parts to enhance the peripheral strength, and the metal mesh 18 is hidden in the positive plate, so that the positive plate is not layered, the overall structure is complete, and the overall strength is not affected.
In particular, the metal mesh 18 is an iron mesh or a steel mesh or an alloy steel mesh or a copper alloy mesh. The metal mesh 18 made of steel and alloy materials thereof or copper and alloy materials thereof can provide better rigidity, so that the metal mesh has enough strength to resist the extrusion force of other components to the positive plate 13 during sealing, and the positive plate 13 is guaranteed to bear larger sealing pressure and be not easy to deform, and the deformation of peripheral collapse and middle bulge is smaller in the battery sealing process.
The manufacturing method of the positive plate 13 is as follows: manganese powder and graphite or mixed powder or particles of manganese powder, silver oxide powder and graphite serving as main raw materials fall into a die forming hole of a tablet press according to a fixed quantity; then putting the metal net with the diameter smaller than the forming hole on the powder or particle surface in the forming hole of the die; the lower male core and the upper male core which can be lifted out of the die hole are arranged in the die forming hole, the tablet press is started, and the upper male core presses the steel mesh and the powder or the fine particles in the die forming hole into an integrated positive plate, so that the zinc-manganese and zinc-silver-manganese button battery can be manufactured.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the present invention, therefore, the present invention is not limited by the appended claims.
Claims (9)
1. An alkaline button cell, characterized by: including cover type negative pole lid, cover the positive pole shell of negative pole lid, locate negative pole calamine cream in the negative pole lid, with the negative pole calamine cream stacks the positive plate that contains manganese or silver that sets up, is located the diaphragm between positive plate and the negative pole calamine cream, is located to encircle the sealing washer that sets up between negative pole lid and the positive pole shell, the positive plate is equipped with the metal mesh that the tiling set up.
2. The alkaline button cell of claim 1 wherein: the metal mesh is buried in the upper end part of the positive plate.
3. The alkaline button cell of claim 1 wherein: the metal mesh is laid on the upper surface of the positive plate and embedded into the positive plate to form a whole.
4. The alkaline button cell of claim 1, 2 or 3 wherein: the diameter of the metal net is smaller than that of the positive plate and larger than that of the negative cover.
5. The alkaline button cell of claim 1 wherein: the metal net is an iron net or a steel net or an alloy steel net or a copper alloy net.
6. The utility model provides a button cell positive plate for place in button cell's positive pole shell, its characterized in that: the button cell positive plate comprises a positive plate body, and the metal mesh of the positive plate body is tiled and arranged.
7. The positive plate of a button cell according to claim 6, wherein: the metal mesh is embedded in the upper end part of the positive plate body or laid on the upper surface of the positive plate body and embedded into the positive plate to form a whole.
8. The positive plate of the button cell as defined in claim 6 or 7, wherein: the diameter of the metal net is smaller than that of the positive plate body and larger than that of the negative cover of the corresponding battery.
9. The positive plate of a button cell according to claim 6, wherein: the metal net is an iron net or a steel net or an alloy steel net or a copper alloy net.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011549189.1A CN112670512B (en) | 2020-12-24 | 2020-12-24 | Alkaline button cell and positive plate of button cell |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011549189.1A CN112670512B (en) | 2020-12-24 | 2020-12-24 | Alkaline button cell and positive plate of button cell |
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| CN112670512A true CN112670512A (en) | 2021-04-16 |
| CN112670512B CN112670512B (en) | 2021-08-31 |
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| CN203218351U (en) * | 2013-03-28 | 2013-09-25 | 深圳市力电电池有限公司 | Button lithium battery with metal supporting ring |
| CN104201401A (en) * | 2014-08-14 | 2014-12-10 | 谢长晴 | Lithium-manganese button battery and button battery positive plate |
| CN107342395A (en) * | 2017-08-06 | 2017-11-10 | 朱程显 | Lithium coin cells with multilayer steel loop or steel mesh |
| CN108232282A (en) * | 2017-12-25 | 2018-06-29 | 惠州Tcl金能电池有限公司 | Button cell and preparation method thereof |
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| CN110048137A (en) * | 2019-05-21 | 2019-07-23 | 宜昌力佳科技有限公司 | The preparation method of button cell and button cell |
| CN209981365U (en) * | 2019-07-29 | 2020-01-21 | 常州宇峰电池有限公司 | Novel positive plate structure |
| CN210224080U (en) * | 2019-07-31 | 2020-03-31 | 常州宇峰电池有限公司 | Positive pole shell point net structure |
| CN211879460U (en) * | 2020-05-09 | 2020-11-06 | 常州纽捷电池科技有限公司 | Button lithium cell with new structure |
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2020
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| US4054726A (en) * | 1975-08-07 | 1977-10-18 | Varta Batterie Aktiengesellschaft | Galvanic primary element with air electrode |
| JPS5550580A (en) * | 1978-10-11 | 1980-04-12 | Seiko Instr & Electronics Ltd | Thin button battery |
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| CN209981365U (en) * | 2019-07-29 | 2020-01-21 | 常州宇峰电池有限公司 | Novel positive plate structure |
| CN210224080U (en) * | 2019-07-31 | 2020-03-31 | 常州宇峰电池有限公司 | Positive pole shell point net structure |
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| CN112670512B (en) | 2021-08-31 |
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