CN217641568U - Button cell with flange structure - Google Patents
Button cell with flange structure Download PDFInfo
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- CN217641568U CN217641568U CN202220750050.1U CN202220750050U CN217641568U CN 217641568 U CN217641568 U CN 217641568U CN 202220750050 U CN202220750050 U CN 202220750050U CN 217641568 U CN217641568 U CN 217641568U
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- cover body
- flange edge
- flange
- button cell
- upper cover
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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 utility model provides a button cell with a flange structure, which comprises a positive cover, a negative cover and a cell body; the positive cover comprises an upper cover body and a lower cover body; the upper middle part of the upper cover body is provided with a relief hole, and the outer side end of the upper cover body is provided with a first flange edge extending outwards; the outer side end of the lower cover body is provided with a second flange edge which extends outwards and is matched with the first flange edge; the upper cover body is covered on the lower cover body, an accommodating cavity is formed between the upper cover body and the lower cover body, and the first flange edge and the second flange edge are welded with each other; the negative pole lid sets up the lower extreme of upper cover body, the upper end of negative pole lid with the upper end of the hole of stepping down flushes or follows the hole of stepping down stretches out in. The utility model discloses a structure to button cell improves for increase button cell's yields, improve button cell life simultaneously, and increase button cell's security.
Description
Technical Field
The utility model belongs to the technical field of the battery, concretely relates to button cell of flanged structure.
Background
The button cell is a button cell frequently used in the market, the shape, appearance and size of the button cell are similar to those of a button cell, the button cell has the characteristics of large diameter and small thickness, and can be often used as a backup power supply of various electronic products, the button cell can be divided into a silver oxide cell, a lithium cell, an alkaline manganese cell and the like according to the used materials, the advantages and the disadvantages of the button cells prepared from different materials have certain differences, the button cell which is more applicable can be selected according to different using equipment, the advantages of the button cell are maximally utilized, the button cell is used as a chemical cell of one category of the button cells, the button cell comprises an anode, a cathode, an electrolyte and the like, the appearance is made of stainless steel materials and is used as the anode, the cathode is a circular cover, a sealing ring is arranged between the anode and the cathode for insulation, the sealing ring is made of nylon, the sealing ring can prevent the electrolyte from leaking besides the insulation effect, and the button cell is the most common button cell.
The existing button cell still has defects in the production and use processes, and because the button cell generally adopts a top peripheral welding mode, the heat effect generated in the welding process can cause failure and badness on the hot melt adhesive of the upper cover, thus affecting the yield of the button cell and the service life of the button cell, and affecting the use safety of the button cell.
SUMMERY OF THE UTILITY MODEL
To the defect of prior art, the utility model provides a button cell of flanged structure improves through button cell's structure for increase button cell's yields improves button cell life simultaneously, and increases button cell's security.
The utility model provides a button cell with a flange structure, which comprises a positive cover, a negative cover and a cell body;
the positive cover comprises an upper cover body and a lower cover body;
the upper middle part of the upper cover body is provided with a relief hole, and the outer side end of the upper cover body is provided with a first flange edge extending outwards;
the outer side end of the lower cover body is provided with a second flange edge which extends outwards and is matched with the first flange edge;
the upper cover body is covered on the lower cover body, an accommodating cavity is formed between the upper cover body and the lower cover body, and the first flange edge and the second flange edge are welded with each other;
the negative electrode cover is arranged at the lower end of the upper cover body, and the upper end of the negative electrode cover is flush with the upper end of the abdicating hole or extends out of the abdicating hole;
the battery cell body is arranged in the containing cavity and is electrically connected with the lower cover body and the negative cover respectively.
In the above technical solution, the utility model discloses can also do following improvement.
The preferable technical scheme is characterized in that: the lower cover body is provided with a first accommodating groove along the vertical direction of the lower cover body.
The preferable technical scheme is characterized in that: the upper cover body is provided with a second accommodating groove matched with the first accommodating groove along the vertical direction of the upper cover body.
The preferable technical scheme is characterized in that: the size of the first flange edge and/or the second flange edge is 0.1-1mm, and the distance between the welding position of the first flange edge and the second flange edge and the upper cover body or the lower cover body is 0.1-0.9mm.
The preferable technical scheme is characterized in that: the battery cell body comprises a plurality of positive electrode plates, a plurality of negative electrode plates and diaphragms, the positive electrode plates and the negative electrode plates are sequentially and alternately arranged along the horizontal direction or the vertical direction, the diaphragms are arranged between the adjacent positive electrode plates and the adjacent negative electrode plates, the single positive electrode plate is electrically connected with the lower cover body, and the single negative electrode plate is electrically connected with the negative cover body.
The preferable technical scheme is characterized in that: the lower end of the first flange edge is provided with a positioning groove along the circumferential direction of the first flange edge, and the second flange edge is provided with a positioning bulge matched with the positioning groove along the circumferential direction of the second flange edge.
The preferable technical scheme is characterized in that: the outer side end of the middle ring is provided with a third flange edge which extends outwards, the third flange edge is matched with the first flange edge or the second flange edge, the middle ring is arranged between the upper cover body and the lower cover body, and the first flange edge, the third flange edge and the second flange edge are welded in sequence.
The preferable technical scheme is characterized in that: the negative cover comprises a contact end and a support end, the contact end is arranged in the middle of the support end, the contact end is matched with the abdication hole and extends upwards from the part of the abdication hole, the support end is positioned under the upper cover body, the upper end of the support end is bonded with the lower end of the upper cover body through an adhesive film, a first adhesive dispensing area is formed between the upper end face of the support end, which is close to the contact end, and the corresponding area between the abdication hole and the contact end, a first adhesive layer is arranged in the first adhesive dispensing area, and the first adhesive layer is bonded with the contact end, the support end and the adhesive film around the first adhesive layer.
The preferable technical scheme is characterized in that: and a second dispensing area is formed by the side end face of the support end far away from the contact end and the lower end of the corresponding upper cover body, a second adhesive layer is arranged in the second dispensing area, and the second adhesive layer is bonded with the contact end, the support end and the adhesive film around the second adhesive layer.
The utility model also provides a button cell's of flanged structure preparation method, including following step:
s1, placing a battery cell body in a lower cover body, mounting a negative cover on an upper cover body, and electrically connecting the positive and negative electrodes of the battery cell body with the lower cover body and the negative cover respectively;
s2, removing moisture from the assembled battery cell body, the positive electrode cover and the negative electrode cover through the processes of vacuumizing and baking;
s3, injecting liquid into the lower cover body in a glove box or a workshop which meets the dew point;
s4, covering the upper cover body and the lower cover body, and welding the first flange and the second flange in a laser welding or ultrasonic welding mode;
and S5, performing annular cutting and polishing on the welded first flange edge and the welded second flange edge at the outer part of the non-welding area.
The utility model has the advantages that: the utility model discloses an adopt flange welding to go up lid and lower lid, lid and lower lid are kept away from to flange limit welding position, and the heat is to last lid hot melt adhesive and the thermal contraction harmful effects of diaphragm when effectively having improved the welding, and button cell's yields is improved simultaneously to increase button cell's security.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
Fig. 1 is a schematic structural diagram of a button cell with a flange structure according to embodiment 1 of the present invention.
Fig. 2 is a schematic structural diagram of another button cell with a flange structure according to embodiment 1 of the present invention.
Fig. 3 is a schematic structural diagram of a button cell with a flange structure according to embodiment 2 of the present invention.
Fig. 4 is a schematic structural diagram of a button cell with a flange structure according to embodiment 3 of the present invention.
Fig. 5 is a schematic enlarged view of a part a of embodiment 3 of the present invention.
Fig. 6 is a schematic structural diagram of a button cell with a flange structure according to embodiment 4 of the present invention.
Fig. 7 is a schematic view of the connection between the upper lid and the negative lid according to embodiment 5 of the present invention.
Fig. 8 is a flowchart of a method for manufacturing a button cell with a flange structure according to embodiment 6 of the present invention.
In the figure, the respective symbols have the following meanings:
1. a positive electrode cover; 11. an upper cover body; 111. a hole for abdication; 112. a first flange edge; 113. a second accommodating groove; 114. positioning a groove; 12. a lower cover body; 121. a second flanged edge; 122. a first accommodating groove; 123. positioning the projection; 2. a negative electrode cover; 21. a contact end; 22. a support end; 23. a first dispensing area; 231. a first glue layer; 24. a second dispensing area; 241. a second adhesive layer; 3. a cell body; 31. a positive electrode plate; 32. a negative electrode plate; 4. an intermediate ring; 41. a third flange edge; 5. and (5) bonding the film.
Detailed Description
For further understanding of the contents, features and functions of the present invention, the following examples are given in detail:
example 1
Referring to fig. 1 and fig. 2, the present embodiment provides a button cell with a flange structure, including a positive electrode cover 1, a negative electrode cover 2, and a cell body 3;
the positive electrode cover 1 comprises an upper cover body 11 and a lower cover body 12;
the upper middle part of the upper cover body 11 is provided with a relief hole 111, and the outer side end of the upper cover body 11 is provided with a first flange edge 112 extending outwards;
a second flange edge 121 which extends outwards and is matched with the first flange edge 112 is arranged at the outer side end of the lower cover body 12;
the upper cover body 11 is covered on the lower cover body 12, an accommodating cavity is formed between the upper cover body 11 and the lower cover body 12, and the first flange edge 112 and the second flange edge 121 are welded with each other;
the negative electrode cover 2 is arranged at the lower end of the upper cover body 11, and the upper end of the negative electrode cover 2 is flush with the upper end of the abdicating hole 111 or extends out of the abdicating hole 111;
the battery cell body 3 is arranged in the accommodating cavity, and the battery cell body 3 is electrically connected with the lower cover body 12 and the negative cover 2 respectively.
In the embodiment, by arranging the positive cover 1, the negative cover 2 and the cell body 3, since the flange welding is adopted between the upper cover body 11 and the lower cover body 12, the flange edge welding position is far away from the upper cover body 11 and the lower cover body 12, the adverse effects of heat fusion of the upper cover body 11 and the thermal contraction of the diaphragm during welding are effectively improved, the yield of the button cell can be increased, the service life of the button cell is prolonged, and the safety of the button cell is improved.
Referring to fig. 1, the lower cover 12 is provided with a first receiving groove 122 along a vertical direction of the lower cover 12.
The first accommodating groove 122 is used for accommodating the cell body 3, and facilitates subsequent installation of the upper cover 11 and the lower cover 12.
In this embodiment, the first flange 112 and the second flange 121 have a size of 0.1-1mm, and the distance from the welding point of the first flange 112 and the second flange 121 to the upper cover 11 or the lower cover 12 is 0.1-0.9mm.
By controlling the size of the first flange edge 112 and the second flange edge 121 and the distance between the welding position of the first flange edge 112 and the second flange edge 121 and the upper cover body 11 or the lower cover body 12 within the above parameters, the adverse effect of heat on the hot melt adhesive of the upper cover body 11 and the thermal shrinkage of the diaphragm during welding is further improved.
Referring to fig. 1, the battery cell body 3 includes a plurality of positive electrode sheets 31, negative electrode sheets 32 and diaphragms, the positive electrode sheets 31 and the negative electrode sheets 32 are sequentially and alternately arranged along a vertical direction, the diaphragms are disposed between the adjacent positive electrode sheets 31 and negative electrode sheets 32, a single positive electrode sheet 31 is electrically connected to the lower cover 12, and a single negative electrode sheet 32 is electrically connected to the negative cover 2.
By providing a plurality of positive electrode sheets 31, negative electrode sheets 32, and separators, the cell body 3 can have a longer endurance.
In the present embodiment, the position where the first flange 112 and the second flange 121 are welded is located at the upper part of the button cell; in addition, the upper cover body 11 is made into a containing groove, and the lower cover body 12 is made into a cover plate, so that the position where the first flange 112 and the second flange 121 are welded can be positioned at the lower part of the button cell.
Example 2
Referring to fig. 3, the difference between the present embodiment and embodiment 1 is: the upper cover 11 is provided with a second receiving groove 113 adapted to the first receiving groove 122 along a vertical direction of the upper cover 11.
In this embodiment, by providing the second receiving groove 113, the second receiving groove 113 is used to cooperate with the first receiving groove 122 to place the cell body 3, and meanwhile, the welding position of the first flange edge 112 and the second flange edge 121 is located in the middle of the button cell.
Example 3
Referring to fig. 4 and 5, the present embodiment is different from embodiment 1 in that: the lower end of the first flange 112 is provided with a positioning groove 114 along the circumferential direction of the first flange 112, and the second flange 121 is provided with a positioning protrusion 123 matching with the positioning groove 114 along the circumferential direction of the second flange 121.
When the first flange 112 is butted with the second flange 121, the positioning protrusion 123 is embedded into the positioning groove 114, so that the alignment of the first flange 112 and the second flange 121 is more accurate, and the appearance of the button cell is more attractive.
Example 4
Referring to fig. 6, the difference between the present embodiment and embodiment 2 is: the middle ring is characterized by further comprising a middle ring 4, a third flange edge 41 extending outwards is arranged at the outer side end of the middle ring 4, the third flange edge 41 is matched with the first flange edge 112 or the second flange edge 121, the middle ring 4 is arranged between the upper cover body 11 and the lower cover body 12, and the first flange edge 112, the third flange edge 41 and the second flange edge 121 are welded in sequence.
When the manufactured cell body 3 is larger than the accommodating cavity formed by covering the upper cover body 11 and the lower cover body 12, the accommodating cavity volume can be increased by the intermediate ring 4 by additionally arranging the intermediate ring 4 between the upper cover body 11 and the lower cover body 12 so as to match with a larger cell body 3.
Example 5
Referring to fig. 7, the difference between the present embodiment and embodiment 1 is: the negative electrode cover 2 comprises a contact end 21 and a support end 22, the contact end 21 is arranged in the middle of the support end 22, the contact end 21 is matched with the abdicating hole 111 and extends upwards from the abdicating hole 111, the support end 22 is positioned under the upper cover body 11, the upper end of the support end 22 is bonded with the lower end of the upper cover body 11 through an adhesive film 5, a first adhesive region 23 is formed in an area between the upper end face of the support end 22 close to the contact end 21 and the corresponding abdicating hole 111 and contact end 21, a first adhesive layer 231 is arranged in the first adhesive region 23, and the first adhesive layer 231 is bonded with the contact end 21, the support end 22 and the adhesive film 5 around the first adhesive layer 231.
In the embodiment, the first adhesive layer 231 is arranged in the first dispensing area 23, after the first adhesive layer 231 is filled in the first dispensing area 23, the first adhesive layer 231 is fully contacted with the contact end 21, the support end 22 and the adhesive film 5 around the first adhesive layer 231, after the first adhesive layer 231 is solidified, the contact end 21, the support end 22 and the adhesive film 5 around the first adhesive layer 231 are bonded together, because the upper cover body 111 and the negative cover 2 are bonded through the adhesive film 5 at the beginning, the bonding effect is further enhanced by the arrangement of the first adhesive layer 231, and meanwhile, the gap at the first dispensing area 23 is completely blocked by the first adhesive layer 231, so that the packaging effect is further enhanced, the occurrence of a liquid leakage situation is avoided, the durability and reliability of the button cell are improved, and the service life of the button cell is prolonged.
Referring to fig. 7, a second dispensing area 24 is formed on the side end surface of the support end 22 away from the contact end 21 and the lower end of the upper cover 11, a second glue layer 241 is disposed in the second dispensing area 24, and the second glue layer 241 is bonded to the contact end 21, the support end 22 and the adhesive sheet 5 around the second glue layer 241.
By arranging the second adhesive layer 241 in the second dispensing area 24, after the second adhesive layer 241 is filled in the second dispensing area 24, the second adhesive layer 241 is fully contacted with the contact end 21, the support end 22 and the adhesive film 5 around the second adhesive layer 241, after the second adhesive layer 241 is solidified, the contact end 21, the support end 22 and the adhesive film 5 around the second adhesive layer 241 are bonded together, because the upper cover body 111 and the negative cover 2 are bonded through the adhesive film 5 at first, the bonding effect is further enhanced by the arrangement of the second adhesive layer 241, and meanwhile, the gap at the second dispensing area 24 is completely blocked by the second adhesive layer 241, so that the packaging effect is further enhanced, and the occurrence of liquid leakage is avoided.
Example 6
Referring to fig. 8, the embodiment further provides a method for manufacturing a button cell with a flange structure, including the following steps:
s1, placing a cell body 3 in a lower cover body 12, installing a negative cover 2 on an upper cover body 11, and electrically connecting the positive and negative electrodes of the cell body 3 with the lower cover body 12 and the negative cover 2 respectively;
s2, removing moisture from the assembled battery cell body 3, the positive electrode cover 1 and the negative electrode cover 2 through the processes of vacuumizing and baking;
s3, injecting liquid into the lower cover body 12 in a glove box or a workshop which meets the dew point;
s4, covering the upper cover body 11 and the lower cover body 12, and welding the first flange edge 112 and the second flange edge 121 in a laser welding or ultrasonic welding mode;
and S5, performing annular cutting and polishing on the welded first flange edge 112 and second flange edge 121 outside the non-welding area.
According to the method, the upper cover body and the lower cover body are welded through the flange, and the welding position of the flange edge is far away from the upper cover body and the lower cover body, so that the adverse effect of heat on hot melt glue of the upper cover body and thermal contraction of the diaphragm during welding is effectively improved, the yield of the button cell can be increased, the service life of the button cell is prolonged, and the safety of the button cell is improved.
In the description of the present invention, it is to be understood that 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", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "a" or "a second" can explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
In the present application, unless expressly stated or limited otherwise, a feature "on" or "under" a second feature may be in direct contact with the second feature or in indirect contact with the second feature through intervening media. Also, a feature "on," "over," and "on" a second feature may be directly on or obliquely over the second feature, or may simply mean that the feature is at a higher level than the second feature. A feature "under", "below" and "beneath" a second feature may be directly or obliquely under the second feature or may simply mean that the feature is at a lesser elevation than the second feature.
In the description of the present specification, references to the description of "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Moreover, various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without being mutually inconsistent. While embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations of the above embodiments may be made by those of ordinary skill in the art without departing from the scope of the present invention.
Claims (9)
1. The utility model provides a button cell of flanged structure which characterized in that: the battery comprises a positive electrode cover, a negative electrode cover and a battery cell body;
the positive cover comprises an upper cover body and a lower cover body;
the upper middle part of the upper cover body is provided with a relief hole, and the outer side end of the upper cover body is provided with a first flange edge extending outwards;
the outer side end of the lower cover body is provided with a second flange edge which extends outwards and is matched with the first flange edge;
the upper cover body is covered on the lower cover body, an accommodating cavity is formed between the upper cover body and the lower cover body, and the first flange edge and the second flange edge are welded with each other;
the negative electrode cover is arranged at the lower end of the upper cover body, and the upper end of the negative electrode cover is flush with the upper end of the abdicating hole or extends out of the abdicating hole;
the battery cell body is arranged in the containing cavity and is electrically connected with the lower cover body and the negative cover respectively.
2. The button cell with flange structure as claimed in claim 1, wherein: the lower cover body is provided with a first accommodating groove along the vertical direction of the lower cover body.
3. The button cell with the flange structure as claimed in claim 2, wherein: the upper cover body is provided with a second accommodating groove matched with the first accommodating groove along the vertical direction of the upper cover body.
4. The button cell with flange structure as claimed in claim 1, wherein: the size of the first flange edge and/or the second flange edge is 0.1-1mm, and the distance between the welding position of the first flange edge and the second flange edge and the upper cover body or the lower cover body is 0.1-0.9mm.
5. The button cell with flange structure as claimed in claim 1, wherein: the battery cell body comprises a plurality of positive electrode plates, a plurality of negative electrode plates and diaphragms, wherein the positive electrode plates and the negative electrode plates are sequentially and alternately arranged along the horizontal direction or the vertical direction, and the diaphragms are arranged between the positive electrode plates and the negative electrode plates and are single, and the positive electrode plates are electrically connected with the lower cover body and are single.
6. The button cell with flange structure as claimed in claim 1, wherein: the lower end of the first flange edge is provided with a positioning groove along the circumferential direction of the first flange edge, and the second flange edge is provided with a positioning bulge matched with the positioning groove along the circumferential direction of the second flange edge.
7. The button cell with the flange structure according to claim 1, wherein: the outer side end of the middle ring is provided with a third flange edge which extends outwards, the third flange edge is matched with the first flange edge or the second flange edge, the middle ring is arranged between the upper cover body and the lower cover body, and the first flange edge, the third flange edge and the second flange edge are welded in sequence.
8. The button cell with flange structure as claimed in claim 1, wherein: the negative pole cover comprises a contact end and a support end, the contact end is arranged in the middle of the support end, the contact end is matched with the abdicating hole and extends upwards from the part of the abdicating hole, the support end is positioned under the upper cover body, the upper end of the support end is bonded with the lower end of the upper cover body through an adhesive film, a first dispensing area is formed between the upper end face of the support end, which is close to the contact end, and the corresponding area between the abdicating hole and the contact end, a first adhesive layer is arranged in the first dispensing area, and the first adhesive layer is bonded with the contact end, the support end and the adhesive film around the first adhesive layer.
9. The button cell with flange structure as claimed in claim 8, wherein: and a second dispensing area is formed by the side end face of the support end far away from the contact end and the lower end of the corresponding upper cover body, a second adhesive layer is arranged in the second dispensing area, and the second adhesive layer is bonded with the contact end, the support end and the adhesive film around the second adhesive layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220750050.1U CN217641568U (en) | 2022-04-02 | 2022-04-02 | Button cell with flange structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220750050.1U CN217641568U (en) | 2022-04-02 | 2022-04-02 | Button cell with flange structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217641568U true CN217641568U (en) | 2022-10-21 |
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ID=83645976
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220750050.1U Active CN217641568U (en) | 2022-04-02 | 2022-04-02 | Button cell with flange structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217641568U (en) |
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2022
- 2022-04-02 CN CN202220750050.1U patent/CN217641568U/en active Active
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