CN211654875U - Button cell - Google Patents
Button cell Download PDFInfo
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- CN211654875U CN211654875U CN202020117855.3U CN202020117855U CN211654875U CN 211654875 U CN211654875 U CN 211654875U CN 202020117855 U CN202020117855 U CN 202020117855U CN 211654875 U CN211654875 U CN 211654875U
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- steel shell
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- sealing ring
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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
Abstract
A button cell, comprising: seal assembly and electric core subassembly, the electric core subassembly sets up in seal assembly. The sealing assembly comprises a first steel shell, a second steel shell and a sealing ring, the sealing ring is arranged between the first steel shell and the second steel shell, a first sealing adhesive layer is arranged on the inner side wall of the sealing ring, a second sealing adhesive layer is arranged on the outer side wall of the sealing ring, the first sealing adhesive layer is connected with the second steel shell, the second sealing adhesive layer is connected with the first steel shell, and the first steel shell and the second steel shell are sealed to form a containing cavity. The electric core component is arranged in the accommodating cavity. Through set up first sealing glue layer and second sealing glue layer respectively at the inside and outside lateral wall of sealing washer, can greatly increased button cell's sealing performance, moreover, first sealing glue layer and second sealing glue layer itself have good sealing performance, so button cell's leakproofness obtains fine improvement to make button cell's life longer, the security performance is better.
Description
Technical Field
The utility model relates to a battery technology field especially relates to a button cell.
Background
The button cell is also called button cell, which refers to a cell with the external dimension like a small button, generally speaking, the diameter is larger, the thickness is thinner, the button cell is in a flat structure, the button cell has the advantages of small volume, wide application in various micro electronic products, high practicability, stable discharge voltage, wide working temperature range, long storage life and the like, the button cell is widely applied to various products such as computer mainboard, calculator, electronic watch, remote controller and electronic toy, and is generally used as a backup power source of various electronic products such as computer mainboard, electronic watch, electronic dictionary, electronic scale, remote controller, electric toy, cardiac pacemaker, electronic hearing aid, counter and camera, the button cell generally comprises a positive electrode, a negative electrode, an electric core, electrolyte and the like, the external surface of the button cell is made of stainless steel materials including a positive electrode stainless steel shell and a negative electrode stainless steel shell, the battery is characterized in that a sealing ring is arranged between the positive stainless steel shell and the negative stainless steel shell for insulation, the sealing ring can prevent electrolyte from leaking and has a sealing effect, a battery cell is accommodated in the battery, the battery cell generally comprises a positive plate, a negative plate and a diaphragm, the battery cell packaged in the positive stainless steel shell and the negative stainless steel shell is soaked or soaked by the electrolyte, the types of button batteries are more, and most of the button batteries are named by the used materials, such as silver oxide batteries, lithium batteries, alkaline manganese batteries and the like.
However, the conventional button cell generally achieves a sealing effect by disposing a sealing ring between a positive stainless steel case and a negative stainless steel case, but the conventional button cell has a problem of poor sealing performance, the sealing operation of the button cell generally includes first installing the sealing ring on the positive stainless steel case or the negative stainless steel case, and then matching the positive stainless steel case and the negative stainless steel case to seal the button cell, and gaps are easily formed between the sealing ring and the positive stainless steel case and between the sealing ring and the negative stainless steel case, the sealing operation precision of the conventional button cell is high, which is not favorable for industrial production, and the sealing ring is easily worn during the matching process of the positive stainless steel case and the negative stainless steel case, thereby affecting the sealing performance of the button cell and affecting the service life of the button cell, meanwhile, the poor sealing performance of the button cell can also cause electrolyte to leak, so that danger is caused and the health of people is harmed.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the weak point among the prior art, providing a button cell that the leakproofness is better, the structure is firm and the security performance is better, sealing performance and the life that can greatly increased button cell improve button cell finished product quality.
The purpose of the utility model is realized through the following technical scheme:
a button cell, comprising: the battery cell assembly is arranged in the sealing assembly;
the sealing assembly comprises a first steel shell, a second steel shell and a sealing ring, the sealing ring is arranged between the first steel shell and the second steel shell, a first sealing adhesive layer is arranged on the inner side wall of the sealing ring, a second sealing adhesive layer is arranged on the outer side wall of the sealing ring, the first sealing adhesive layer is connected with the second steel shell, the second sealing adhesive layer is connected with the first steel shell, and the first steel shell and the second steel shell are sealed to form a containing cavity;
the electric core assembly is arranged in the accommodating cavity.
In one embodiment, the cell assembly comprises a cell main body, a positive electrode tab and a negative electrode tab, the cell main body is arranged in the accommodating cavity, the positive electrode tab is arranged at one end of the cell main body close to the first steel shell, the positive electrode tab is welded with the first steel shell, the negative electrode tab is arranged at one end of the cell main body close to the second steel shell, and the negative electrode tab is welded with the second steel shell.
In one embodiment, the cell main body comprises a positive plate, a negative plate and a diaphragm, and the diaphragm is arranged between the positive plate and the negative plate.
In one embodiment, the cell body is a winding cell body.
In one embodiment, the inner side wall of the sealing ring is provided with a first convex pattern, and the first convex pattern is connected with the first sealing glue layer.
In one embodiment, the outer side wall of the sealing ring is provided with a second raised pattern, and the second raised pattern is connected with the second sealing glue layer.
In one embodiment, the thickness of the first sealant layer is 0.11mm to 0.25 mm.
In one embodiment, the thickness of the second sealant layer is 0.11mm to 0.25 mm.
In one embodiment, the first sealant layer is an epoxy first sealant layer.
In one embodiment, the second sealant layer is an epoxy second sealant layer.
Compared with the prior art, the utility model discloses at least, following advantage has:
the utility model can greatly increase the sealing performance of the button cell by respectively arranging the first sealing adhesive layer and the second sealing adhesive layer on the inner side wall and the outer side wall of the sealing ring, on one hand, the first sealing adhesive layer and the second sealing adhesive layer can fill the possible gap when the sealing ring is overlapped with the first steel shell and the second steel shell, thereby avoiding the gap between the first steel shell, the second steel shell and the sealing ring, and improving the sealing performance of the button cell, on the other hand, the first sealing adhesive layer and the second sealing adhesive layer can also fill the damage, the holes and the cracks of the sealing ring due to the possible abrasion when the sealing ring is assembled with the first steel shell and the second steel shell, such as the easy breakage, the holes and the cracks of the sealing ring, thereby improving the sealing performance of the sealing ring, furthermore, the first sealing adhesive layer and the second sealing adhesive layer have good sealing performance, therefore, the tightness of the button battery is well improved, so that the button battery is longer in service life and better in safety performance.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required 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 view of an assembly structure of a button cell according to an embodiment of the present invention;
fig. 2 is a schematic view of an explosion structure of a button cell according to an embodiment of the present invention;
fig. 3 is a schematic view of an internal structure of a button cell according to an embodiment of the present invention;
fig. 4 is an enlarged schematic view at a of fig. 3.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The 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 invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1, 3 and 4, the button cell 10 includes a sealing assembly 100 and a battery cell assembly 200, wherein the battery cell assembly 200 is disposed in the sealing assembly 100. The sealing assembly 100 comprises a first steel shell 110, a second steel shell 120 and a sealing ring 130, the sealing ring 130 is arranged between the first steel shell 110 and the second steel shell 120, a first sealing adhesive layer 131 is arranged on the inner side wall of the sealing ring 130, a second sealing adhesive layer 132 is arranged on the outer side wall of the sealing ring 130, the first sealing adhesive layer 131 is connected with the second steel shell 120, the second sealing adhesive layer 132 is connected with the first steel shell 110, and the first steel shell 110 and the second steel shell 120 are sealed to form a containing cavity. The electric core assembly 200 is disposed in the receiving cavity.
It should be noted that, the electric core assembly 200 is placed in the first steel shell 110, and the electrolyte is injected, the sealant is firstly rolled and brushed on the inner side wall of the sealing ring 130, so that the inner side wall of the sealing ring 130 is provided with the first sealant layer 131, the sealing ring 130 is sleeved on the second steel shell 120, so that the first sealant layer 131 contacts with the second steel shell 120, the sealant is then rolled and brushed on the outer side wall of the sealing ring 130, so that the outer side wall of the sealing ring 130 is provided with the second sealant layer 132, the second steel shell 120 is covered and arranged in the first steel shell 110, so that the second sealant layer 132 contacts with the first steel shell 110, so as to complete the superposition of the first steel shell 110 and the second steel shell 120, it should be mentioned that the sealant can be rolled and brushed on the inner side wall of the sealing ring 130, so that the inner side wall of the sealing ring 130 is provided with the first sealant layer 131, the sealant is rolled and brushed on the outer side wall of the sealing ring 130, the sealing ring 130 is placed in the first steel shell 110, the second sealant layer 132 is in contact with the first steel shell 110, the second steel shell 120 is covered in the first steel shell 110, the first sealant layer 131 is in contact with the second steel shell 120, superposition is completed, the superposed region is heated and sealed, and sealing of the button cell 10 is completed, by respectively arranging the first sealant layer 131 and the second sealant layer 132 on the inner and outer side walls of the sealing ring 130, the sealing performance of the button cell 10 can be greatly improved, on one hand, the first sealant layer 131 and the second sealant layer 132 can fill up gaps possibly existing when the sealing ring 130 is superposed with the first steel shell 110 and the second steel shell 120, so as to avoid gaps existing between the first steel shell 110, the second steel shell 120 and the sealing ring 130, so as to improve the sealing performance of the button cell 10, on the other hand, due to possible abrasion existing when the sealing ring 130 is assembled with the first steel shell 110 and the second steel shell 120, for example, the sealing ring 130 is prone to breakage, holes, cracks and the like, the first sealing adhesive layer 131 and the second sealing adhesive layer 132 can also fill up the breakage, the holes and the cracks of the sealing ring 130, the sealing performance of the sealing ring 130 is improved, and therefore the sealing performance of the button cell 10 is further improved, and the sealant has good sealing performance, so that the sealing performance of the button cell 10 is well improved, the service life of the button cell 10 is longer, and the safety performance is better.
Specifically, referring to fig. 2 and fig. 3, the battery assembly 200 includes a battery cell main body 210, a positive tab 220 and a negative tab 230, the battery cell main body 210 is disposed in the accommodating cavity, the positive tab 220 is disposed at one end of the battery cell main body 210 close to the first steel shell 110, the positive tab 220 is welded to the first steel shell 110, the negative tab 230 is disposed at one end of the battery cell main body 210 close to the second steel shell 120, and the negative tab 230 is welded to the second steel shell 120. It should be noted that, the cell main body 210 is configured to store electric energy, the positive tab 220 and the negative tab 230 are used as electrodes of the button cell 10 and are configured to transmit electric energy in the cell main body 210 to an external electric device, the positive tab 220 is disposed at one end of the cell main body 210 close to the first steel shell 110, so that the positive tab 220 contacts with the first steel shell 110, and the positive tab 220 is conveniently welded with the first steel shell 110 subsequently, so that the first steel shell 110 is used as an output end of a positive pole of the button cell 10, the negative tab 230 is disposed at one end of the cell main body 210 close to the second steel shell 120, so that the negative tab 230 contacts with the second steel shell 120, and the negative tab 230 is conveniently welded with the second steel shell 120 subsequently, so that the second steel shell 120 is used as an output end of a negative pole of the button cell 10, specifically, the positive tab 220 and the negative tab 230 are respectively disposed at two ends of the cell main body 210, the installation and welding of the follow-up anode tab 220 and the cathode tab 230 are facilitated, meanwhile, the anode tab 220 is prevented from contacting the cathode tab 230, short circuit is avoided, and the safety performance of the button battery 10 in use is improved.
More specifically, referring to fig. 3, in order to improve the production efficiency of the cell main body 210 and the production efficiency of the button cell 10, the cell main body 210 includes a positive plate 211, a negative plate 212, and a diaphragm 213, and the diaphragm 213 is disposed between the positive plate 211 and the negative plate 212. The cell body 210 is a winding-type cell body. It should be noted that, the cell main body 210 adopts a winding-type cell main body, that is, the diaphragm 213 is disposed between the positive plate 211 and the negative plate 212, and then the positive plate 211, the negative plate 212, and the diaphragm 213 are rolled into the cell main body 210, so as to obtain the winding-type cell main body, the cell main body of the button battery 10 mainly includes two preparation processes of winding and lamination, the lamination process has a higher complexity, more production time needs to be invested, which is not beneficial to improving the production efficiency of the button battery 10, the winding process is simpler and more convenient to operate, can be completed quickly, industrial automation is easily realized, the production efficiency of the winding-type cell main body is high, and the winding-type cell main body is more suitable.
Further, in order to glue the sealing ring 130 better and further improve the sealing performance of the finished button cell 10, a first convex pattern is arranged on the inner side wall of the sealing ring 130 and connected with the first sealant layer 131. The outer side wall of the sealing ring 130 is provided with a second convex pattern, and the second convex pattern is connected with the second sealant layer 132. It should be noted that, the first convex pattern is arranged on the inner side wall of the sealing ring 130, so that the contact area between the inner side wall of the sealing ring 130 and the first sealant layer 131 is increased, the amount of the sealant adhered to the inner side wall can be increased, similarly, the second convex pattern is arranged on the outer side wall of the sealing ring 130, so that the contact area between the outer side wall of the sealing ring 130 and the second sealant layer 132 is increased, the amount of the sealant adhered to the outer side wall can be increased, it is ensured that enough sealant is filled into gaps, and the possible damage and the filling of the holes and the cracks of the sealing ring 130 can be realized, meanwhile, the bonding firmness can be improved, and the stability and the sealing performance of the finished structure of the button cell 10 are further.
Further, in order to avoid the shortage or excessive use of the sealant, the thickness of the first sealant layer 131 is 0.11mm to 0.25 mm. The thickness of the second sealant layer 132 is 0.11mm to 0.25 mm. It should be noted that, the thickness of the first sealant layer 131 and the thickness of the second sealant layer 132 respectively determine the amount of the sealant used on the inner side wall and the outer side wall of the sealing ring 130, when the thickness of the first sealant layer 131 is smaller than 0.11mm and the thickness of the second sealant layer 132 is smaller than 0.11mm, the amount of the sealant used is too small to ensure that sufficient sealant is filled in the gaps between the first steel shell 110, the second steel shell 120 and the sealing ring 130, and possible damages, holes and cracks of the sealing ring 130 are filled, which affects the sealing performance of the finished product, when the thickness of the first sealant layer 131 is larger than 0.25mm and the thickness of the second sealant layer 132 is larger than 0.25mm, the amount of the sealant is too large, which, on one hand, causes sealant resource waste and is not beneficial for improving the production benefit, and on the other hand, excessive sealant may cause sealant overflow and easily causes poor appearance of the finished product, in general, the thickness of the first sealant layer 131 is controlled to be 0.11mm to 0.25mm, and the thickness of the second sealant layer 132 is controlled to be 0.11mm to 0.25 mm.
Further, the first sealant layer 131 is an epoxy first sealant layer. The second sealant layer 132 is an epoxy second sealant layer. That is to say, the first sealant layer 131 and the second sealant layer 132 both adopt epoxy resin sealant materials, the epoxy resin sealant is a sealant using epoxy resin as a base body, and has excellent sealability and higher bonding strength, and meanwhile, the epoxy resin sealant also has the advantages of small shrinkage and good stability, the liquid sealant using epoxy resin as a sealant base material is widely applied to various production fields, and the first sealant layer 131 and the second sealant layer 132 both adopt epoxy resin sealant materials, which is beneficial to ensuring the sealability of the prepared button cell 10 and improving the quality of finished products.
Compared with the prior art, the utility model discloses at least, following advantage has:
the utility model can greatly increase the sealing performance of the button cell by respectively arranging the first sealing adhesive layer and the second sealing adhesive layer on the inner side wall and the outer side wall of the sealing ring, on one hand, the first sealing adhesive layer and the second sealing adhesive layer can fill the possible gap when the sealing ring is overlapped with the first steel shell and the second steel shell, thereby avoiding the gap between the first steel shell, the second steel shell and the sealing ring, and improving the sealing performance of the button cell, on the other hand, the first sealing adhesive layer and the second sealing adhesive layer can also fill the damage, the holes and the cracks of the sealing ring due to the possible abrasion when the sealing ring is assembled with the first steel shell and the second steel shell, such as the easy breakage, the holes and the cracks of the sealing ring, thereby improving the sealing performance of the sealing ring, furthermore, the first sealing adhesive layer and the second sealing adhesive layer have good sealing performance, therefore, the tightness of the button battery is well improved, so that the button battery is longer in service life and better in safety performance.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. A button cell, comprising: the battery cell assembly is arranged in the sealing assembly;
the sealing assembly comprises a first steel shell, a second steel shell and a sealing ring, the sealing ring is arranged between the first steel shell and the second steel shell, a first sealing adhesive layer is arranged on the inner side wall of the sealing ring, a second sealing adhesive layer is arranged on the outer side wall of the sealing ring, the first sealing adhesive layer is connected with the second steel shell, the second sealing adhesive layer is connected with the first steel shell, and the first steel shell and the second steel shell are sealed to form a containing cavity;
the electric core assembly is arranged in the accommodating cavity.
2. The button battery according to claim 1, wherein the cell assembly comprises a cell main body, a positive tab and a negative tab, the cell main body is disposed in the accommodating cavity, the positive tab is disposed at one end of the cell main body close to the first steel shell, the positive tab is welded to the first steel shell, the negative tab is disposed at one end of the cell main body close to the second steel shell, and the negative tab is welded to the second steel shell.
3. The button cell of claim 2, wherein the cell body comprises a positive plate, a negative plate and a diaphragm, and the diaphragm is arranged between the positive plate and the negative plate.
4. The button cell of claim 3, wherein the cell body is a wound cell body.
5. The button cell as claimed in claim 1, wherein the inner sidewall of the sealing ring is provided with a first raised pattern, and the first raised pattern is connected with the first sealing adhesive layer.
6. The button cell as claimed in claim 1, wherein the outer side wall of the sealing ring is provided with a second raised pattern, and the second raised pattern is connected with the second sealing glue layer.
7. The button cell as claimed in claim 1, wherein the thickness of the first sealant layer is 0.11mm to 0.25 mm.
8. The button cell as claimed in claim 1, wherein the thickness of the second sealant layer is 0.11mm to 0.25 mm.
9. The button cell according to claim 1, wherein the first sealant layer is an epoxy first sealant layer.
10. The button cell as defined in claim 1, wherein the second sealant layer is an epoxy second sealant layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020117855.3U CN211654875U (en) | 2020-01-19 | 2020-01-19 | Button cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020117855.3U CN211654875U (en) | 2020-01-19 | 2020-01-19 | Button cell |
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| Publication Number | Publication Date |
|---|---|
| CN211654875U true CN211654875U (en) | 2020-10-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020117855.3U Active CN211654875U (en) | 2020-01-19 | 2020-01-19 | Button cell |
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| CN (1) | CN211654875U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111180616A (en) * | 2020-01-19 | 2020-05-19 | 惠州市恒泰科技股份有限公司 | Button battery and preparation process thereof |
| CN113131050A (en) * | 2021-04-30 | 2021-07-16 | 国研新能(深圳)技术有限公司 | Stainless steel composite plate and battery |
| CN114730947A (en) * | 2021-03-26 | 2022-07-08 | 宁德新能源科技有限公司 | Electrochemical device and electric equipment |
-
2020
- 2020-01-19 CN CN202020117855.3U patent/CN211654875U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111180616A (en) * | 2020-01-19 | 2020-05-19 | 惠州市恒泰科技股份有限公司 | Button battery and preparation process thereof |
| CN114730947A (en) * | 2021-03-26 | 2022-07-08 | 宁德新能源科技有限公司 | Electrochemical device and electric equipment |
| CN113131050A (en) * | 2021-04-30 | 2021-07-16 | 国研新能(深圳)技术有限公司 | Stainless steel composite plate and battery |
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