CN216213734U - Steel shell button cell and anti-creeping liquid structure thereof - Google Patents
Steel shell button cell and anti-creeping liquid structure thereof Download PDFInfo
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- CN216213734U CN216213734U CN202122374457.7U CN202122374457U CN216213734U CN 216213734 U CN216213734 U CN 216213734U CN 202122374457 U CN202122374457 U CN 202122374457U CN 216213734 U CN216213734 U CN 216213734U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The application provides a steel-shell button cell and anti-creeping liquid structure thereof. The anti-creeping liquid structure of the steel shell button cell comprises a shell and a sealing cover plate, wherein the shell comprises a sealing shell and an inward-turning shell, the inward-turning shell is connected with the sealing shell, the inward-turning shell is provided with an automatic backflow step and a liquid injection part, the liquid injection part is connected with the automatic backflow step, the automatic backflow step is connected with the sealing shell, and the liquid injection part is provided with a liquid injection port; the sealing cover plate is covered on the liquid injection part and is connected with the automatic backflow step. The anti-creeping liquid structure of the steel shell button cell can effectively prevent electrolyte from creeping and overflowing during the assembly of the steel shell button cell.
Description
Technical Field
The utility model relates to the technical field of batteries, in particular to a steel shell button battery and an anti-creeping liquid structure thereof.
Background
Button cells are widely used in various miniature electronic products due to their small size, for example:
computer mainboard, electronic watch, electronic dictionary, electronic scale, remote controller, electronic toy, cardiac pacemaker, counter etc.. The button cell is also called a button cell, and refers to a cell with the overall dimension like a small button, generally speaking, the diameter is larger, and the thickness is thinner; the steel shell button cell comprises a positive plate, a negative plate, a diaphragm, electrolyte and the like, the shell is made of stainless steel, the steel shell of the button cell comprises a bottom shell and a top cover, after the electrolyte is injected into a cell roll core in the bottom shell, the top cover is covered at the opening of the bottom shell in a closed mode, and then sealing welding is carried out, so that the complete steel shell button cell is obtained.
However, when the traditional steel-shell button cell is covered, the immersion liquid electric core is easily stressed by the pressure of the top cover, so that the electrolyte in the bottom shell has a liquid climbing phenomenon, the wall surface of the steel shell can form a fog frost surface after being climbed by the electrolyte, and the fog frost layer can be heated and evaporated to generate bubbles during laser high-temperature welding, so that the welding seam is poor in rosin joint and air holes. In addition, the top cover is easy to slide into the shell when the cover is closed, so that electrolyte is taken out, and the shell of the steel-shell button cell is polluted.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art and provides a steel shell button cell and a liquid climbing prevention structure thereof, wherein the steel shell button cell can effectively prevent electrolyte from climbing and overflowing.
The purpose of the utility model is realized by the following technical scheme:
an anti-creeping liquid structure of a steel-shell button cell, comprising:
the shell comprises a sealing shell and an inverted shell, the inverted shell is connected with the sealing shell, the inverted shell is provided with an automatic backflow step and a liquid injection part, the liquid injection part is connected with the automatic backflow step, the automatic backflow step is connected with the sealing shell, and the liquid injection part is provided with a liquid injection port;
and the sealing cover plate is covered on the liquid injection part and is connected with the automatic backflow step.
In one embodiment, the liquid-creepage preventing structure of the steel-shell button cell further comprises a sealing gasket, and the sealing gasket is attached to the automatic backflow step.
In one embodiment, the orthographic projection area of the sealing gasket is larger than that of the liquid injection part.
In one embodiment, the sealing cover plate is half-wrapped in the sealing gasket.
In one embodiment, the liquid-climbing prevention structure of the steel-shell button cell further comprises a sealing hot melt adhesive ring, and the sealing hot melt adhesive ring is sleeved between the sealing cover plate and the automatic backflow step.
In one embodiment, the height of the automatic backflow step is equal to the sum of the heights of the sealing cover plate and the sealing gasket.
In one embodiment, the inclination angle of the automatic backflow step is 20-80 degrees.
In one embodiment, the diameter of the sealing cover plate is 3 mm-4 mm.
In one embodiment, the sealing cover plate comprises a cover plate body and an anti-adhesive liquid layer, wherein the anti-adhesive liquid layer is connected with the cover plate body.
A steel-shelled button cell comprising the anti-creep liquid structure of any one of the above embodiments.
Compared with the prior art, the utility model has at least the following advantages:
1. the anti-creeping liquid structure of the steel-shell button cell comprises a shell and a sealing cover plate, wherein an inverted shell is connected with the sealing shell, the inverted shell is provided with an automatic backflow step and a liquid injection part, the liquid injection part is connected with the automatic backflow step, the liquid injection part is provided with a liquid injection port, the liquid injection port is used for injecting electrolyte, and the electrolyte is required to pass through the automatic backflow step when being injected or discharged; further, the sealing cover plate is covered on the liquid injection part, and the sealing cover plate is connected with the automatic backflow step. Because the step-like structure of automatic backward flow step, there is the difference in height in the plane at automatic backward flow step and notes liquid mouth place promptly, even electrolyte spills over from annotating the liquid mouth, the electrolyte that automatic backward flow step also can make to spill over flows back to in the casing to prevent effectively that the electrolyte in the casing from appearing climbing the liquid phenomenon, make the electrolyte that spills over unable arrival sealed apron, and then improve the clean and tidy nature of sealed apron department, improve the stability of steel-shelled button cell seal welding.
2. In the liquid climbing prevention structure of the steel-shell button cell, the automatic backflow step can not only effectively prevent electrolyte in the shell from climbing and prevent the overflowed electrolyte from reaching the sealing cover plate, but also serve as a pressure bearing step of the sealing cover plate. Because sealed apron lid is located notes liquid portion, sealed apron is connected with automatic backward flow step, makes automatic backward flow step can prevent sealed apron when closing the lid with annotate the electrolyte contact of liquid mouth, can prevent promptly that sealed apron from sliding into in the casing and taking electrolyte out when the assembly to further improve the clean and tidy nature of sealed apron department, further improve the stability of steel-shelled button cell seal weld.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic structural diagram of an anti-creeping structure of a steel-casing button cell in one embodiment;
fig. 2 is a schematic cross-sectional structure view of the liquid-creep-preventing structure of the steel-shell button cell shown in fig. 1;
fig. 3 is a partially enlarged schematic view of the cross-sectional structure of the liquid-tight structure of the steel-shell button cell shown in fig. 1.
Detailed Description
To facilitate an understanding of the utility model, the utility model will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The application provides a liquid structure is prevented creeping by box-hat button cell. The anti-creeping liquid structure of the steel shell button cell comprises a shell and a sealing cover plate, wherein the shell comprises a sealing shell and an inwards-turned shell, the inwards-turned shell is connected with the sealing shell, the inwards-turned shell is provided with an automatic backflow step and a liquid injection part, the liquid injection part is connected with the automatic backflow step, the automatic backflow step is connected with the sealing shell, and the liquid injection part is provided with a liquid injection port; the sealing cover plate is arranged on the liquid injection part in a covering mode, and the sealing cover plate is connected with the automatic backflow step.
As shown in fig. 1 and fig. 2, an anti-creeping structure 10 of a steel-casing button cell of an embodiment includes a casing 100 and a sealing cover 200, the casing 100 includes a sealing casing 110 and an inverted casing 120, the inverted casing 120 is connected to the sealing casing 110, the inverted casing 120 is provided with an automatic backflow step 1220 and a liquid injection part 1240, the liquid injection part 1240 is connected to the automatic backflow step 1220, the automatic backflow step 1220 is connected to the sealing casing 110, and the liquid injection part 1240 is provided with a liquid injection port 1242; the sealing cover plate 200 is covered on the liquid injection part 1240, and the sealing cover plate 200 is connected with the automatic backflow step 1220.
The anti-creeping liquid structure 10 of the steel-shell button cell comprises a shell 100 and a sealing cover plate 200, wherein an inverted shell 120 is connected with a sealing shell 110, the inverted shell 120 is provided with an automatic backflow step 1220 and a liquid injection part 1240, the liquid injection part 1240 is connected with the automatic backflow step 1220, the liquid injection part 1240 is provided with a liquid injection port 1242, the liquid injection port 1242 is used for injecting electrolyte, and the electrolyte is injected or flows out through the automatic backflow step 1220; further, the sealing cover 200 is covered on the liquid injection part 1240, and the sealing cover 200 is connected with the automatic backflow step 1220. Because the step-shaped structure of the automatic backflow step 1220, namely, the height difference exists between the plane where the automatic backflow step 1220 and the liquid injection port 1242 are located, even if the electrolyte overflows from the liquid injection port 1242, the automatic backflow step 1220 can also enable the overflowing electrolyte to flow back into the shell 100, so that the electrolyte in the shell 100 is effectively prevented from creeping, the overflowing electrolyte cannot reach the sealing cover plate 200, the neatness of the sealing cover plate 200 is further improved, and the stability of the sealing welding of the steel shell button cell is improved. Furthermore, the automatic backflow step 1220 not only can effectively prevent the electrolyte in the casing 100 from creeping, so that the overflowed electrolyte cannot reach the sealing cover plate 200, but also the automatic backflow step 1220 can be used as a pressure-bearing step of the sealing cover plate 200. Because the liquid portion 1240 is located to sealed apron 200 lid, sealed apron 200 is connected with automatic backward flow step 1220, makes automatic backward flow step 1220 can prevent sealed apron 200 when closing the lid with annotate the electrolyte contact of liquid mouth 1242, can prevent promptly that sealed apron 200 from sliding into in casing 100 and taking out electrolyte when the assembly to further improve the clean and tidy nature of sealed apron 200 department, further improve steel-shell button cell seal welding's stability.
As shown in fig. 2 and 3, in one embodiment, the liquid-tight structure 10 of the steel-shell button cell further includes a gasket 300, and the gasket 300 is attached to the automatic backflow step 1220. It can be understood that, although the overflowed electrolyte can flow back into the casing 100 when passing through the automatic backflow step 1220 due to the step-shaped structure of the automatic backflow step 1220, that is, the height difference exists between the automatic backflow step 1220 and the plane where the liquid injection port 1242 is located, a small amount of electrolyte is likely to remain on the surface of the automatic backflow step 1220 after the electrolyte flows back into the casing 100. In order to prevent that sealed apron 200 from being infected with remaining electrolyte when closing the lid, in this embodiment, steel-casing button cell's anti-creep liquid structure 10 still includes sealed pad 300, sealed pad 300 laminates in automatic backward flow step 1220, sealed pad 300 can play better isolated and sealed effect to electrolyte, thereby sealed apron 200 is infected with remaining electrolyte when closing the lid, guarantee the clean and tidy nature after sealed apron 200 closed the lid, and then improve steel-casing button cell seal welding's stability. In addition, the sealing gasket 300 can also play a better insulating role, thereby improving the performance stability of the steel-shell button cell.
Further, the forward projection area of the gasket 300 is larger than that of the liquid injection portion 1240. It can be understood that the sealing gasket 300 can play a better role in isolation and sealing for the electrolyte, so that the sealing cover plate 200 is contaminated by the residual electrolyte when the cover is closed, the neatness of the sealing cover plate 200 after the cover is closed is ensured, and the stability of the sealing welding of the steel shell button cell is improved. In addition, the gasket 300 can also perform a good insulating function. In order to further improve the adhesion tightness between the gasket 300 and the automatic backflow step 1220 and prevent the leakage of the electrolyte, in the present embodiment, the orthographic projection area of the gasket 300 is larger than the orthographic projection area of the liquid injection part 1240, so that the gasket 300 can completely seal the liquid injection port 1242 and the case 100 of the liquid injection part 1240 around the liquid injection port 1242, thereby further improving the sealing performance of the gasket 300 and further improving the anti-creeping effect of the anti-creeping liquid structure 10.
Further, the sealing cap plate 200 is half-wrapped in the sealing gasket 300. It is understood that the sealing cover plate 200 is covered with the injection part 1240, the sealing cover plate 200 is connected to the automatic reflow step 1220, and if the sealing cover plate 200 directly contacts the automatic reflow step 1220, the edge of the sealing cover plate 200 is easily contaminated by the overflowing electrolyte. In order to further prevent the sealing cover plate 200 from contacting with the electrolyte, in the embodiment, the sealing cover plate 200 is half-wrapped in the sealing gasket 300, so that the sealing cover plate 200 is prevented from directly contacting with the dynamic return step, the sealing cover plate 200 is effectively prevented from contacting with the electrolyte, and meanwhile, the sealing gasket 300 can better prevent the sealing cover plate 200 from sliding into the electrolyte injection port 1242 and taking out the electrolyte when the sealing cover plate is closed, thereby improving the safety of the sealing cover plate 200 when the sealing cover plate is closed. In addition, the sealing cover plate 200 is half-wrapped in the sealing gasket 300, and the sealing gasket 300 can also play a good buffering role on the sealing cover plate 200, so that the stability of the liquid-climbing prevention structure 10 is improved.
As shown in fig. 2 and 3, in one embodiment, the liquid-creepage preventing structure 10 of the steel-shell button cell further includes a sealing hot-melt rubber ring 400, and the sealing hot-melt rubber ring 400 is sleeved between the sealing cover plate 200 and the automatic backflow step 1220. It is understood that, after the sealing cover 200 is covered on the liquid injection portion 1240, a groove exists between the circumference of the sealing cover 200 and the sealing housing 110. In order to improve the sealing performance and the insulating performance at the sealing cover plate 200, in this embodiment, the liquid-climbing prevention structure 10 of the steel-shell button cell further includes a sealing hot-melt rubber ring 400, the sealing hot-melt rubber ring 400 is sleeved between the sealing cover plate 200 and the automatic backflow step 1220, the automatic backflow step 1220 is connected with the sealing shell 110, and the sealing hot-melt rubber ring 400 can improve the sealing performance between the sealing cover plate 200 and the automatic backflow step 1220 and improve the sealing performance between the sealing cover plate 200 and the sealing shell 110. In addition, the sealing hot-melt rubber ring 400 has good insulation, and the sealing hot-melt rubber ring 400 is sleeved between the sealing cover plate 200 and the automatic backflow step 1220, so that the insulation of the anti-creeping liquid structure 10 can be effectively improved.
In one embodiment, the height of the automatic reflow step 1220 is equal to the sum of the heights of the sealing cover plate 200 and the sealing gasket 300. It can be understood that the automatic backflow step 1220 not only can effectively prevent the electrolyte in the casing 100 from creeping, so that the overflowed electrolyte cannot reach the sealing cover plate 200, but also the automatic backflow step 1220 can be used as a pressure-bearing step of the sealing cover plate 200. Because the liquid portion 1240 is located to sealed apron 200 lid, sealed apron 200 is connected with automatic backward flow step 1220, makes automatic backward flow step 1220 can prevent sealed apron 200 when closing the lid with annotate the electrolyte contact of liquid mouth 1242, can prevent promptly that sealed apron 200 from sliding into in casing 100 and taking out electrolyte when the assembly to further improve the clean and tidy nature of sealed apron 200 department, further improve steel-shell button cell seal welding's stability. However, if the sealing cover 200 is covered on the liquid injection part 1240, the sealing cover 200 is higher than the sealing case 110 or lower than the sealing case 110, which causes the problem of the unevenness of the steel-case button cell case 100. In order to improve the flatness of the steel can button cell casing 100, in this embodiment, the height of the automatic reflow step 1220 is the same as the sum of the heights of the sealing cover plate 200 and the gasket 300, so that the sealing cover plate 200 is covered on the liquid injection part 1240, i.e., the sealing cover plate 200 and the sealing casing 110 are in the same plane after the sealing cover plate is covered, thereby effectively improving the flatness of the steel can button cell casing 100.
In one embodiment, the angle of inclination of the auto-reflow step 1220 is 20 degrees to 80 degrees. It can be understood that, because of the step-like structure of the automatic backflow step 1220, namely, there is a height difference between the plane where the automatic backflow step 1220 and the liquid injection port 1242 are located, even if the electrolyte overflows from the liquid injection port 1242, the automatic backflow step 1220 can also make the overflowing electrolyte flow back into the casing 100, thereby effectively preventing the electrolyte in the casing 100 from creeping, making the overflowing electrolyte unable to reach the sealing cover plate 200, further improving the tidiness of the sealing cover plate 200, and improving the stability of the sealing welding of the steel shell button cell. However, if the angle of inclination of the automatic return step 1220 is too small, the anti-creeping effect is likely to be not achieved; if the inclination angle of the automatic backflow step 1220 is too large, the area of the automatic backflow step 1220 is easily small, the pressure-bearing effect is also poor, and the closing of the sealing cover plate 200 is not facilitated. In order to improve the anti-creeping effect of the automatic backflow step 1220, in this embodiment, the inclination angle of the automatic backflow step 1220 is 20-80 degrees, so that the automatic backflow step 1220 has a good anti-creeping effect, and meanwhile, the inclination angle of 20-80 degrees can make the opening direction area of the automatic backflow step 1220 larger than the area of the sealing cover plate 200, thereby facilitating the cover closing of the sealing cover plate 200 and being beneficial to improving the pressure bearing effect of the automatic backflow step 1220 on the sealing cover plate 200.
In one embodiment, the diameter of the sealing cap 200 is 3mm to 4 mm. It can be understood that the sealing cover plate 200 of the injection port 1242 of the conventional steel can button cell has a diameter of 12mm, the length of the sealing bead after injection is 38mm, the sealing bead is long, which easily prolongs the process time, and the welding heating time of the case 100 is long, which easily heats the electrolyte to generate bubbles, thereby affecting the performance of the steel can button cell. In order to optimize the sealing weld path length after liquid injection of the anti-creeping liquid structure 10, shorten the heating time and reduce bubbles generated by heating the electrolyte, in the embodiment, the diameter of the sealing cover plate 200 is 3 mm-4 mm, compared with the sealing weld path length after liquid injection of the existing steel shell button cell, the sealing weld path length after liquid injection is shortened from 37.8mm to 11mm, and the sealing weld path length is reduced by 26.8 mm; the welding heating time is shortened from 8.5S/PCS to 3.5S/PCS, and the welding time is shortened by 5S, so that the length of a sealing weld bead is effectively reduced, the heating time is shortened, the electrolyte is prevented from being heated to generate bubbles, and the stability of the anti-creeping liquid structure 10 during sealing is further improved.
In one embodiment, the sealing cap 200 includes a cap body and an anti-adhesive liquid layer coupled to the cap body. It is understood that the sealing cap 200 is provided to the priming portion 1240 such that the sealing cap 200 is coupled to the automatic reverse flow step 1220. Due to the stepped structure of the automatic return step 1220, i.e., the height difference between the automatic return step 1220 and the liquid injection port 1242, even if the electrolyte overflows from the liquid injection port 1242, the automatic return step 1220 can cause the overflowing electrolyte to flow back into the case 100. However, after the electrolyte flows back into the case 100, a residual part of the electrolyte is easily adhered to the sealing cover plate 200, so that a small amount of electrolyte is easily overflowed, and the welding of the steel-shell button cell is affected. In order to prevent the electrolyte from flowing back into the casing 100 and then remaining a small amount of electrolyte to adhere to the sealing cover plate 200, in the present embodiment, the sealing cover plate 200 includes a cover plate main body and an anti-sticking liquid layer connected to the cover plate main body, and the anti-sticking liquid layer can effectively prevent the electrolyte from adhering to the sealing cover plate 200, so as to further improve the anti-creeping effect of the anti-creeping structure 10.
The application also provides a steel-shell button cell which comprises the anti-creeping liquid structure 10 in any embodiment.
Compared with the prior art, the utility model has at least the following advantages:
1. the anti-creeping liquid structure 10 of the steel-shell button cell comprises a shell 100 and a sealing cover plate 200, wherein an inverted shell 120 is connected with a sealing shell 110, the inverted shell 120 is provided with an automatic backflow step 1220 and a liquid injection part 1240, the liquid injection part 1240 is connected with the automatic backflow step 1220, the liquid injection part 1240 is provided with a liquid injection port 1242, the liquid injection port 1242 is used for injecting electrolyte, and the electrolyte is injected or flows out through the automatic backflow step 1220; further, the sealing cover 200 is covered on the liquid injection part 1240, and the sealing cover 200 is connected with the automatic backflow step 1220. Because the step-shaped structure of the automatic backflow step 1220, namely, the height difference exists between the plane where the automatic backflow step 1220 and the liquid injection port 1242 are located, even if the electrolyte overflows from the liquid injection port 1242, the automatic backflow step 1220 can also enable the overflowing electrolyte to flow back into the shell 100, so that the electrolyte in the shell 100 is effectively prevented from creeping, the overflowing electrolyte cannot reach the sealing cover plate 200, the neatness of the sealing cover plate 200 is further improved, and the stability of the sealing welding of the steel shell button cell is improved.
2. In the anti-creeping liquid structure 10 of the steel-shell button cell of the present invention, the automatic backflow step 1220 not only can effectively prevent the electrolyte in the case 100 from creeping, so that the overflowing electrolyte cannot reach the sealing cover plate 200, but also the automatic backflow step 1220 can be used as a pressure-bearing step of the sealing cover plate 200. Because the liquid portion 1240 is located to sealed apron 200 lid, sealed apron 200 is connected with automatic backward flow step 1220, makes automatic backward flow step 1220 can prevent sealed apron 200 when closing the lid with annotate the electrolyte contact of liquid mouth 1242, can prevent promptly that sealed apron 200 from sliding into in casing 100 and taking out electrolyte when the assembly to further improve the clean and tidy nature of sealed apron 200 department, further improve steel-shell button cell seal welding's stability.
The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. The utility model provides a liquid structure is prevented creeping by steel-shelled button cell which characterized in that includes:
the shell comprises a sealing shell and an inverted shell, the inverted shell is connected with the sealing shell, the inverted shell is provided with an automatic backflow step and a liquid injection part, the liquid injection part is connected with the automatic backflow step, the automatic backflow step is connected with the sealing shell, and the liquid injection part is provided with a liquid injection port;
and the sealing cover plate is covered on the liquid injection part and is connected with the automatic backflow step.
2. The liquid-creepage preventing structure for steel-shelled button cells according to claim 1, further comprising a gasket, wherein the gasket is fitted to the automatic backflow step.
3. The liquid-climbing prevention structure of the steel-shell button cell according to claim 2, wherein the sealing gasket has an orthographic projection area larger than that of the liquid injection part.
4. The liquid creepage preventing structure for steel-shelled button cells according to claim 2, wherein the sealing cover plate is half-wrapped in the sealing gasket.
5. The liquid climbing prevention structure of the steel-shell button cell according to claim 1, further comprising a sealing hot melt adhesive ring, wherein the sealing hot melt adhesive ring is sleeved between the sealing cover plate and the automatic backflow step.
6. The liquid-creepage preventing structure for steel-shelled button cells according to claim 2, wherein the height of the automatic backflow step is equal to the sum of the heights of the sealing cover plate and the sealing gasket.
7. The liquid-climbing prevention structure of the steel-shell button cell according to claim 1, wherein the inclination angle of the automatic backflow step is 20-80 degrees.
8. The liquid-climbing preventing structure for the steel-shell button cell according to claim 1, wherein the diameter of the sealing cover plate is 3mm to 4 mm.
9. The liquid creepage preventing structure of steel-shelled button cells according to claim 1, wherein the sealing cover plate comprises a cover plate body and an anti-sticking liquid layer, the anti-sticking liquid layer being connected to the cover plate body.
10. A steel-shell button cell, characterized in that it comprises the anti-creeping liquid structure as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122374457.7U CN216213734U (en) | 2021-09-28 | 2021-09-28 | Steel shell button cell and anti-creeping liquid structure thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122374457.7U CN216213734U (en) | 2021-09-28 | 2021-09-28 | Steel shell button cell and anti-creeping liquid structure thereof |
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| CN216213734U true CN216213734U (en) | 2022-04-05 |
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| CN202122374457.7U Active CN216213734U (en) | 2021-09-28 | 2021-09-28 | Steel shell button cell and anti-creeping liquid structure thereof |
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