CN115395148B - Button cell and electronic equipment - Google Patents
Button cell and electronic equipment Download PDFInfo
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- CN115395148B CN115395148B CN202210929158.1A CN202210929158A CN115395148B CN 115395148 B CN115395148 B CN 115395148B CN 202210929158 A CN202210929158 A CN 202210929158A CN 115395148 B CN115395148 B CN 115395148B
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- metal piece
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- adhesive
- button cell
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- 229910052751 metal Inorganic materials 0.000 claims abstract description 120
- 239000002184 metal Substances 0.000 claims abstract description 120
- 238000002844 melting Methods 0.000 claims abstract description 37
- 230000008018 melting Effects 0.000 claims abstract description 37
- 239000000463 material Substances 0.000 claims abstract description 9
- 238000002161 passivation Methods 0.000 claims abstract description 5
- 239000012790 adhesive layer Substances 0.000 claims description 59
- 239000000853 adhesive Substances 0.000 claims description 51
- 230000001070 adhesive effect Effects 0.000 claims description 51
- 239000010410 layer Substances 0.000 claims description 46
- 239000003292 glue Substances 0.000 claims description 31
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 12
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052759 nickel Inorganic materials 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 239000010949 copper Substances 0.000 claims description 5
- 238000004891 communication Methods 0.000 claims description 3
- 230000007423 decrease Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 abstract description 10
- 238000000034 method Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010309 melting process Methods 0.000 description 2
- 239000000565 sealant Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/147—Lids or covers
- H01M50/148—Lids or covers characterised by their shape
- H01M50/153—Lids or covers characterised by their shape for button or coin cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
- H01M10/0422—Cells or battery with cylindrical casing
- H01M10/0427—Button cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/147—Lids or covers
- H01M50/155—Lids or covers characterised by the material
- H01M50/157—Inorganic material
- H01M50/159—Metals
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/147—Lids or covers
- H01M50/155—Lids or covers characterised by the material
- H01M50/164—Lids or covers characterised by the material having a layered structure
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/183—Sealing members
- H01M50/186—Sealing members characterised by the disposition of the sealing members
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The invention discloses a button cell and an electronic device, wherein the button cell comprises: the shell is internally limited with a containing cavity, and one end of the shell is provided with an opening communicated with the containing cavity; the battery cell assembly is arranged in the accommodating cavity and comprises a first tab and a second tab; the lid subassembly is established on the opening to the lid subassembly is closed the casing, and wherein, the lid subassembly includes: the bonding piece is arranged between the first metal piece and the second metal piece, so that the first metal piece and the second metal piece are bonded into a whole, the first metal piece and the second metal piece are passivation material pieces, the first metal piece is connected with the shell, the first tab is connected with the first metal piece, the bonding piece is of a multi-layer structure, and the melting points of each layer of structure of the bonding piece are different. According to the button cell, good sealing can be formed between the first metal piece, the second metal piece and the bonding piece, and leakage of the button cell is effectively prevented.
Description
Technical Field
The invention relates to the technical field of battery manufacturing, in particular to a button battery and electronic equipment.
Background
The battery cap in the prior art is generally made of stainless steel materials, and the stainless steel is not easy to passivate and cannot form good combination with the sealant, so that the battery is easy to leak in the storage and aging processes. In addition, in the prior art, when the battery cap is attached, the materials of all layers are different, the temperature difference is large, and the leakage caused by poor attachment of sealant and metal is also easy to cause.
Disclosure of Invention
The invention aims to provide a novel technical scheme of a button battery and electronic equipment, which at least can solve the problem that the battery is easy to leak in the prior art.
In a first aspect of the present invention, there is provided a button cell comprising:
a housing defining a receiving cavity therein, one end of the housing having an opening in communication with the receiving cavity;
the battery cell assembly is arranged in the accommodating cavity and comprises a first tab and a second tab;
the lid subassembly, the lid subassembly is established on the opening, in order to cover the casing, wherein, the lid subassembly includes: the device comprises a shell, a first metal piece, a second metal piece and an adhesive piece, wherein the adhesive piece is arranged between the first metal piece and the second metal piece, the first metal piece and the second metal piece are adhered into a whole, the first metal piece is a passivation material piece, the first metal piece is connected with the shell, a first tab is connected with the first metal piece, the adhesive piece is of a multi-layer structure, and the melting point of each layer of structure of the adhesive piece is different.
Optionally, each layer of the adhesive has a melting point that gradually decreases in a direction away from the receiving cavity.
Optionally, the adhesive member includes: the first adhesive layer faces the accommodating cavity.
Optionally, in the case that the first tab is an anode tab, the melting point of the first adhesive layer is smaller than the melting point of the second adhesive layer; and under the condition that the first tab is a negative tab, the melting point of the first adhesive layer is greater than that of the second adhesive layer.
Optionally, the first adhesive layer and the second adhesive layer are arranged in a staggered manner in the thickness direction, so that a gap is formed between the adhesive piece and the first metal piece and between the adhesive piece and the second metal piece.
Optionally, the first adhesive layer is an insulating layer.
Optionally, the adhesive member includes: the first glue film, second glue film and the third glue film that stack gradually and set up, first glue film orientation hold the chamber, the fusing point of third glue film is greater than first glue film with the fusing point of second glue film.
Optionally, the first metal piece is an aluminum sheet, and the first tab is an anode tab; or the first metal piece is a nickel sheet or a copper sheet, and the first tab is a negative tab.
Optionally, the first metal piece is welded with the housing.
In a second aspect of the present invention, an electronic device is provided, including the button cell described in the above embodiment.
According to the button battery, the cover body component adopts the first metal piece and the second metal piece which are easy to passivate, so that good sealing is formed between the first metal piece and the bonding piece and between the second metal piece and the bonding piece. Meanwhile, the bonding piece is designed into a multi-layer structure, and the melting point of each layer of structure of the bonding piece is different, so that the bonding piece is matched with the temperature difference of the first metal piece and the second metal piece, the sealing connection between the bonding piece and the first metal piece and the second metal piece is further ensured, and the leakage of the button cell is effectively prevented.
Other features of the present invention and its advantages will become apparent from the following detailed description of exemplary embodiments of the invention, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a schematic structural view of a button cell according to an embodiment of the present invention;
fig. 2 is a cross-sectional view of a button cell according to an embodiment of the present invention;
FIG. 3 is a diagram showing a process of bonding an adhesive member to a first metal member and a second metal member of a button cell according to an embodiment of the present invention;
fig. 4 is another bonding process diagram of the bonding member of the button cell and the first and second metal members according to an embodiment of the present invention;
reference numerals:
a button cell 100;
a housing 10; a housing chamber 11;
a cover assembly 20; a first metal piece 21; a second metal piece 22; an adhesive member 23; a first adhesive layer 231; a second glue layer 232; a gap 24;
and a cell assembly 30.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise.
The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of exemplary embodiments may have different values.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
In the description and claims of the present invention, the terms "first," "second," and the like, if any, may include one or more of those features, either explicitly or implicitly. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.
In the description of the present invention, it should be understood that, if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are referred to, the positional relationship indicated based on the drawings is merely for convenience of description and simplification of the description, and does not indicate or imply that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the invention.
In the description of the present invention, it should be noted that the terms "mounted," "connected," and "connected" are to be construed broadly, unless otherwise specifically defined and limited. For example, the connection can be fixed connection, detachable connection or integrated connection; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
A button cell 100 according to an embodiment of the present invention is specifically described below with reference to the accompanying drawings.
As shown in fig. 1 and 2, a button cell 100 according to an embodiment of the present invention includes a case 10, a cell assembly 30, and a cap assembly 20.
Specifically, the housing 10 defines a housing chamber 11 therein, and one end of the housing 10 is provided with an opening communicating with the housing chamber 11. The battery cell assembly 30 is disposed in the accommodating cavity 11, and the battery cell assembly 30 includes a first tab and a second tab. The cover assembly 20 is disposed on the opening to cover the housing 10. Wherein, lid assembly 20 includes: the first metal piece 21, the second metal piece 22 and the adhesive piece 23, the adhesive piece 23 is provided between the first metal piece 21 and the second metal piece 22 to adhere the first metal piece 21 and the second metal piece 22 into one body. The first metal piece 21 and the second metal piece 22 are passivation material pieces, the first metal piece 21 is connected with the shell 10, and the first tab is connected with the first metal piece 21. The adhesive member 23 has a multi-layered structure, and each layer of the adhesive member 23 has a different melting point.
In other words, referring to fig. 1 and 2, the button cell 100 according to the embodiment of the present invention is mainly composed of a case 10, a battery cell assembly 30, and a cap assembly 20. Wherein, a containing cavity 11 is formed in the shell 10, one end of the shell 10 is provided with an opening, and the opening is communicated with the containing cavity 11. The battery cell assembly 30 is mounted in the accommodating cavity 11, and the battery cell assembly 30 has a first tab and a second tab. The cover assembly 20 is disposed over the opening for covering the housing 10. The cover assembly 20 mainly comprises a first metal piece 21, a second metal piece 22 and an adhesive piece 23, wherein the adhesive piece 23 is arranged between the first metal piece 21 and the second metal piece 22, and the first metal piece 21 and the second metal piece 22 can be adhered into a whole through the adhesive piece 23 to form a cover cap structure of the button cell 100. The first metal piece 21 and the second metal piece 22 can be passivation material pieces, so that the tightness of connection between the first metal piece 21 and the second metal piece 22 and the bonding piece 23 is improved, and leakage of the cover body assembly 20 in the storage and aging processes of the button cell 100 is prevented.
The first metal piece 21 is connected with the housing 10, and the first tab is connected with the first metal piece 21. When the first tab is a positive tab, the second tab is a negative tab, and when the first tab is a negative tab, the second tab is a positive tab. The bonding piece 23 can be designed into a multi-layer structure, and the melting points of each layer of the bonding piece 23 are different, so that the bonding piece 23 can be matched with the temperature difference of the first metal piece 21 and the second metal piece 22, the sealing connection between the bonding piece 23 and the first metal piece 21 and the second metal piece 22 is further ensured, and the leakage of the button cell 100 is effectively prevented.
It should be noted that, in the actual use process of the button cell 100, heat is generated during the charging and discharging process of the electrolyte, and when the heat is transferred to the cover assembly 20, the temperature difference of different materials of the cover assembly 20 is large. By arranging the adhesive member 23 in a multi-layer structure having different melting points, uneven flow of the multi-layer structure due to temperature difference during the hot melting process of the multi-layer structure of the adhesive member 23 is avoided.
Thus, according to the button cell 100 of the embodiment of the present invention, the cap assembly 20 employs the first metal piece 21 and the second metal piece 22 that are easily passivated, ensuring that a good seal is formed between the first metal piece 21 and the second metal piece 22 and the adhesive piece 23. Meanwhile, the bonding piece 23 is designed into a multi-layer structure, and the melting point of each layer of the bonding piece 23 is different, so that the bonding piece is matched with the temperature difference of the first metal piece 21 and the second metal piece 22, the sealing connection between the bonding piece 23 and the first metal piece 21 and the second metal piece 22 is further ensured, and the button cell 100 is effectively prevented from leaking.
According to one embodiment of the invention, the melting point of each layer of the adhesive 23 decreases gradually in the direction away from the receiving cavity 11. That is, as shown in fig. 2, the melting point of each layer structure of the adhesive member 23 may be gradually decreased outwardly in the thickness direction thereof, and the melting point of the adhesive member 23 may be decreased in a gradient manner, ensuring that the adhesive member 23 is more tightly adhered to the first and second metal members 21 and 22.
According to one embodiment of the invention, the adhesive 23 comprises: a first glue layer 231 and a second glue layer 232, the first glue layer 231 being directed towards the receiving cavity 11.
In other words, as shown in fig. 2 to 4, the adhesive member 23 may be designed as a two-layer structure, and the adhesive member 23 is mainly composed of a first adhesive layer 231 and a second adhesive layer 232, wherein the first adhesive layer 231 faces the accommodating cavity 11, the first adhesive layer 231 is connected with the first metal member 21, and the second adhesive layer 232 is connected with the second metal member 22.
In some embodiments of the present invention, in the case that the first tab is a positive tab, the melting point of the first adhesive layer 231 is less than the melting point of the second adhesive layer 232; in the case that the first tab is a negative tab, the melting point of the first adhesive layer 231 is greater than the melting point of the second adhesive layer 232.
That is, in the button cell 100 of the present invention, in the case that the first tab is the positive tab, since the heat generated at the positive tab of the button cell 100 is small, the melting point of the first adhesive layer 231 may be smaller than that of the second adhesive layer 232, preventing the first adhesive layer 231 from being thermally fused, and improving the good sealing between the adhesive member 23 and the first and second metal members 21 and 22. Under the condition that the first tab is the negative tab, because the heat generated at the negative tab of the button cell 100 is larger, the melting point of the first adhesive layer 231 can be larger than that of the second adhesive layer 232, the first adhesive layer 231 cannot be subjected to hot melting, and meanwhile, because the second adhesive layer 232 is far away from the first tab relative to the first adhesive layer 231, the second adhesive layer 232 is heated relatively less, and the melting point of the second adhesive layer 232 can be smaller than that of the first adhesive layer 231.
According to an embodiment of the present invention, the first adhesive layer 231 and the second adhesive layer 232 are offset in the thickness direction so that the adhesive member 23 forms a gap 24 with the first metal member 21 and the second metal member 22.
In other words, as shown in fig. 3 and 4, for the adhesive member 23 of the two-layer structure, the melting points of the first adhesive layer 231 and the second adhesive layer 232 are different, and the first adhesive layer 231 and the second adhesive layer 232 may also be offset in the thickness direction, so that the gap 24 (see fig. 4) is formed between the adhesive member 23 and the first metal member 21 and the second metal member 22. It should be noted that, during the hot melting process, the adhesive member 23 flows between the first adhesive layer 231 and the second adhesive layer 232, and under the condition of uneven temperature, local protrusions are easily formed, so that a short circuit is formed between the adhesive member 23 and the first metal member 21 and the second metal member 22. In addition, the upper side and the lower side are different in metal, the temperature and the pressure of the hot melting lamination have certain difference, and the glue layer is likely to be extruded away when the second hot melting temperature and the second hot melting pressure are reached, so that the sealing effect is reduced.
According to the invention, the melting points of the first adhesive layer 231 and the second adhesive layer 232 are set to be different, and the first adhesive layer 231 and the second adhesive layer 232 are arranged in a staggered manner, and optionally, one adhesive layer is an adhesive layer in the two layers of adhesive pieces 23, the other adhesive layer has the characteristic of high melting point, the second layer cannot be seriously softened in the hot bonding process, the gap 24 between metal pieces can be kept, in addition, the adhesive layer internal pressure in a closed space can be ensured, and the sealing pressure is ensured.
Optionally, the first adhesive layer 231 is an insulating layer, the first adhesive layer 231 has a higher melting point than the second adhesive layer 232, and the first adhesive layer 231 has an insulating property to prevent the button cell 100 from shorting.
According to one embodiment of the invention, the adhesive 23 comprises: the first glue layer 231, the second glue layer 232 and the third glue layer that stack gradually set up, and first glue layer 231 is towards holding chamber 11, and the fusing point of third glue layer is greater than the fusing point of first glue layer 231 and second glue layer 232.
In other words, the adhesive member 23 may be configured as a three-layer structure, and the adhesive member 23 includes a first adhesive layer 231, a second adhesive layer 232, and a third adhesive layer that are sequentially stacked, where the first adhesive layer 231 faces the accommodating cavity 11, and the melting point of the third adhesive layer may be greater than the melting points of the first adhesive layer 231 and the second adhesive layer 232, so as to ensure that the adhesive member 23 is more tightly adhered to the first metal member 21 and the second metal member 22.
In some embodiments of the present invention, the first metal piece 21 is an aluminum sheet and the first tab is a positive tab; alternatively, the first metal piece 21 is a nickel sheet or a copper sheet, and the first tab is a negative tab. The first metal piece 21 is welded to the housing 10.
In other words, the first metal member 21 may be an aluminum sheet and the first tab is a positive tab. The aluminum sheet is easily passivated, ensuring a good seal of the first metal piece 21 with the adhesive piece 23. Alternatively, the first metal piece 21 may be a nickel sheet or a copper sheet, and the first tab is a negative tab. The nickel or copper sheet is easily passivated, ensuring a good seal of the first metal piece 21 with the adhesive piece 23. The first metal piece 21 is welded to the housing 10, and the first metal piece 21 may be welded to the housing 10 by laser welding, cold welding, or the like. Of course, in the present application, the first metal piece 21 is not limited to the materials such as aluminum sheet and nickel sheet, other metal material pieces that are easy to be passivated are also within the protection scope of the present invention, so that the adhesion between the adhesive piece 23 and the first metal piece 21 and the second metal piece 22 is better, the adhesion strength is higher, the sealing performance is improved, and the leakage is prevented.
Of course, other structures of the button cell 100 and the working principle thereof are understood and can be implemented by those skilled in the art, and detailed descriptions thereof are omitted herein.
In summary, according to the button cell 100 of the embodiment of the present invention, the cap assembly 20 employs the first metal piece 21 and the second metal piece 22 that are easily passivated, ensuring that a good seal is formed between the first metal piece 21 and the second metal piece 22 and the adhesive piece 23. Meanwhile, the bonding piece 23 is designed into a multi-layer structure, and the melting point of each layer of the bonding piece 23 is different, so that the bonding piece is matched with the temperature difference of the first metal piece 21 and the second metal piece 22, the sealing connection between the bonding piece 23 and the first metal piece 21 and the second metal piece 22 is further ensured, and the button cell 100 is effectively prevented from leaking.
According to a second aspect of the present invention, there is provided an electronic device including the button cell 100 in the above-described embodiment. The electronic device includes, but is not limited to, headphones, cell phones, watches, AR devices, VR devices, smart speakers, bracelets, and the like.
Since the button cell 100 according to the embodiment of the present invention has the above technical effects, the electronic device according to the embodiment of the present invention should also have the corresponding technical effects, that is, the electronic device according to the present invention adopts the button cell 100, which can prevent leakage of liquid and improve the service life of the electronic device.
Of course, other structures of the electronic device and the working principle thereof are understood and can be implemented by those skilled in the art, and detailed description thereof is omitted herein.
While certain specific embodiments of the invention have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (10)
1. A button cell, comprising:
a housing defining a receiving cavity therein, one end of the housing having an opening in communication with the receiving cavity;
the battery cell assembly is arranged in the accommodating cavity and comprises a first tab and a second tab;
the lid subassembly, the lid subassembly is established on the opening, in order to cover the casing, wherein, the lid subassembly includes: the device comprises a shell, a first metal piece, a second metal piece and an adhesive piece, wherein the adhesive piece is arranged between the first metal piece and the second metal piece, the first metal piece and the second metal piece are adhered into a whole, the first metal piece is a passivation material piece, the first metal piece is connected with the shell, a first tab is connected with the first metal piece, the adhesive piece is of a multi-layer structure, and the melting point of each layer of structure of the adhesive piece is different.
2. The button cell of claim 1, wherein each layer of the adhesive has a melting point that decreases progressively in a direction away from the receiving cavity.
3. The button cell of claim 1 wherein the adhesive comprises: the first adhesive layer faces the accommodating cavity.
4. The button cell of claim 3, wherein in the case where the first tab is a positive tab, the melting point of the first glue layer is less than the melting point of the second glue layer; and under the condition that the first tab is a negative tab, the melting point of the first adhesive layer is greater than that of the second adhesive layer.
5. The button cell of claim 3, wherein the first glue layer and the second glue layer are offset in a thickness direction so that a gap is formed between the adhesive member and the first metal member and the second metal member.
6. The button cell of claim 5, wherein the first glue layer is an insulating layer.
7. The button cell of claim 1 wherein the adhesive comprises: the first glue film, second glue film and the third glue film that stack gradually and set up, first glue film orientation hold the chamber, the fusing point of third glue film is greater than first glue film with the fusing point of second glue film.
8. The button cell of claim 1, wherein the first metal piece is an aluminum sheet and the first tab is a positive tab; or the first metal piece is a nickel sheet or a copper sheet, and the first tab is a negative tab.
9. The button cell of claim 1 wherein the first metal piece is welded to the housing.
10. An electronic device comprising the button cell of any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210929158.1A CN115395148B (en) | 2022-08-03 | 2022-08-03 | Button cell and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210929158.1A CN115395148B (en) | 2022-08-03 | 2022-08-03 | Button cell and electronic equipment |
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| Publication Number | Publication Date |
|---|---|
| CN115395148A CN115395148A (en) | 2022-11-25 |
| CN115395148B true CN115395148B (en) | 2023-06-30 |
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| CN202210929158.1A Active CN115395148B (en) | 2022-08-03 | 2022-08-03 | Button cell and electronic equipment |
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| CN (1) | CN115395148B (en) |
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| CN110323368A (en) * | 2019-07-05 | 2019-10-11 | 东莞胜力电池实业有限公司 | A kind of zinc air button cell and preparation method thereof |
| JPWO2021230206A1 (en) * | 2020-05-14 | 2021-11-18 | ||
| CN114597602A (en) * | 2020-12-04 | 2022-06-07 | 比亚迪股份有限公司 | Laminated tab for soft package battery and preparation method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130209878A1 (en) * | 2010-09-03 | 2013-08-15 | Nec Corporation | Nonaqueous secondary cell and method of manufacturing the same |
| FR3044659B1 (en) * | 2015-12-07 | 2020-02-28 | Commissariat A L'energie Atomique Et Aux Energies Alternatives | WATERPROOF GLASS-METAL THROUGH, USE AS A TERMINAL FOR LITHIUM ELECTROCHEMICAL ACCUMULATOR, ASSOCIATED PROCESS |
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| CN206849932U (en) * | 2017-07-06 | 2018-01-05 | 浙江东尼电子股份有限公司 | A kind of lithium ion cell polar ear |
| CN110323368A (en) * | 2019-07-05 | 2019-10-11 | 东莞胜力电池实业有限公司 | A kind of zinc air button cell and preparation method thereof |
| JPWO2021230206A1 (en) * | 2020-05-14 | 2021-11-18 | ||
| CN114597602A (en) * | 2020-12-04 | 2022-06-07 | 比亚迪股份有限公司 | Laminated tab for soft package battery and preparation method thereof |
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