CN219180646U - Button cell with high structural strength - Google Patents
Button cell with high structural strength Download PDFInfo
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- CN219180646U CN219180646U CN202320063361.5U CN202320063361U CN219180646U CN 219180646 U CN219180646 U CN 219180646U CN 202320063361 U CN202320063361 U CN 202320063361U CN 219180646 U CN219180646 U CN 219180646U
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- end piece
- button cell
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- 238000007789 sealing Methods 0.000 claims abstract description 102
- 238000000034 method Methods 0.000 claims description 9
- 238000005452 bending Methods 0.000 claims description 7
- 210000000988 bone and bone Anatomy 0.000 claims description 7
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 238000001746 injection moulding Methods 0.000 abstract description 7
- 239000000853 adhesive Substances 0.000 abstract description 5
- 230000001070 adhesive effect Effects 0.000 abstract description 5
- 238000003466 welding Methods 0.000 description 16
- 239000003292 glue Substances 0.000 description 14
- 238000002788 crimping Methods 0.000 description 6
- 239000000243 solution Substances 0.000 description 5
- 230000002159 abnormal effect Effects 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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 high structural strength, which comprises an inner shell, a sealing ring, an outer shell, an electric core, a first tab and a second tab. The inner shell comprises an inner end piece and an inner barrel, and a plurality of through holes are formed in the other end of the inner barrel along the circumferential direction of the inner barrel. The sealing ring is formed by integral injection molding with the other end of the inner cylinder, the sealing ring comprises an outer sealing cylinder, a convex ring and an inner sealing cylinder which are sequentially connected, and a plurality of clamping structures connected between the inner sealing cylinder and the outer sealing cylinder, wherein the outer sealing cylinder is fixedly connected with the outer wall of the inner cylinder, the inner sealing cylinder is fixedly connected with the inner wall of the inner cylinder, the plurality of clamping structures are correspondingly filled in the plurality of through holes one by one, and the convex ring is fixedly connected with the end face of the inner cylinder. The shell comprises an outer end piece and an outer barrel, the outer barrel is sleeved outside the outer sealing barrel in an interference mode, and the outer end piece is abutted with the convex ring. The button cell with high structural strength has stronger adhesive force between the sealing ring and the inner shell, and is not easy to separate from the inner shell when the sealing ring is subjected to a specified external force.
Description
Technical Field
The utility model relates to the technical field of button cells, in particular to a button cell with high structural strength.
Background
Button cells are widely used in various aspects of life, particularly in related products and fields such as computer motherboards, watches, calculators, bluetooth headsets, toy interphones, and the like.
Button cells in the prior art include an inner case, an outer case, and a gasket. When in assembly, the sealing ring is sleeved on the inner shell to form an assembly, then the assembly and the outer shell are assembled together, and finally the crimping packaging is carried out through the crimping jig. In the button cell in the prior art, the structural strength of the connection between the sealing ring and the inner shell is weaker, and when the sealing ring is subjected to larger external force, the sealing ring is easily separated from the inner shell, so that the quality of the button cell is poorer.
Therefore, a button cell with high structural strength is needed to solve the above technical problems.
Disclosure of Invention
The utility model provides a button cell with high structural strength, wherein a sealing ring and an inner shell have strong adhesive force, and the sealing ring is not easy to separate from the inner shell when the sealing ring is subjected to a specified external force.
The technical scheme of the utility model is as follows:
a button cell of great structural strength comprising:
the inner shell comprises an inner end piece and an inner barrel, wherein the inner end piece is fixedly connected with one end of the inner barrel, and a plurality of through holes are formed in the other end of the inner barrel along the circumferential direction of the inner barrel;
the sealing ring is integrally injection molded with the other end of the inner cylinder and comprises an outer sealing cylinder, a convex ring and an inner sealing cylinder which are sequentially connected, and a plurality of clamping structures connected between the inner sealing cylinder and the outer sealing cylinder, wherein the outer sealing cylinder is fixedly connected with the outer wall of the inner cylinder, the inner sealing cylinder is fixedly connected with the inner wall of the inner cylinder, the plurality of clamping structures are correspondingly filled in the plurality of through holes one by one, and the convex ring is fixedly connected with the end face of the inner cylinder;
the outer shell comprises an outer end piece and an outer barrel, the outer barrel is sleeved outside the outer sealing barrel in an interference mode, the outer end piece is fixedly connected with one end, far away from the inner end piece, of the outer barrel, and the outer end piece is abutted with the convex ring;
the battery cell is positioned in the inner cylinder and is coiled or laminated;
the first tab is welded with the battery cell and the inner end piece; the method comprises the steps of,
and the second lug is welded with the battery cell and the outer end piece.
In the button cell with high structural strength, the through hole is round.
In the button cell with high structural strength, 4-6 through holes are uniformly distributed along the circumferential direction of the inner cylinder.
In the button cell with high structural strength, the inner cylinder comprises a narrow section, a clamping section and a wide section which are sequentially connected along the axial direction of the inner cylinder, the diameter of the wide section is larger than that of the narrow section, the clamping section is obliquely connected between the narrow section and the wide section, the through hole is positioned on the wide section, the inner end piece is fixedly connected with one end of the narrow section, the outer sealing cylinder covers the wide section, the clamping section and a part of the narrow section, and the outer sealing cylinder forms an oblique step structure at the clamping section;
one end of the outer barrel, which is far away from the outer end piece, is bent towards the axial direction of the outer barrel to form an inclined bending edge, and the bending edge is in limiting clamping connection with the step structure.
In the button cell with high structural strength, the inner wall of the inner sealing cylinder is flush with the inner wall of the narrow section.
In the button cell with high structural strength, the outer wall of the outer sealing cylinder is provided with the convex bone position along the circumferential direction of the outer wall, and the bone position is in interference connection with the outer cylinder.
In the button cell with high structural strength, the inner surface of the inner end piece is a concave surface.
In the button cell with high structural strength, the inner surface of the outer end piece is a concave surface.
In the button cell with high structural strength, the outer surface of the outer end piece is a convex surface.
In the button cell with high structural strength, the protruding height of the outer surface of the outer end piece is 0.05mm-0.1mm.
Compared with the prior art, the utility model has the beneficial effects that: the button battery with high structural strength is characterized in that the sealing ring is positioned between the inner shell and the outer shell to play a role in isolation and sealing, the inner shell is placed in the mould to be injection-molded to form the sealing ring, so that the inner shell and the sealing ring are of an integrated structure, glue liquid flows into the through hole to form a clamping structure during injection molding, the clamping structure and the through hole form a buckling structure, the clamping structure is connected with the inner sealing cylinder and the outer sealing cylinder, the structure enables the sealing ring and the inner shell to have stronger adhesive force, and the sealing ring is not easy to separate from the inner shell when the sealing ring is subjected to a specified external force; the inner shell and the sealing ring are of an integrated structure, so that the tightness of the battery is enhanced, the subsequent process of assembling the sealing ring is reduced, and the assembly efficiency is improved; when glue is injected into the die, the through holes can enhance the fluidity of the glue solution, and the phenomenon of glue shortage of the sealing ring is avoided; when the internal temperature or the internal pressure of the battery is abnormal, the through hole can become a rapid pressure relief channel, so that the safety of the battery is improved.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the embodiments are briefly described below, and the drawings in the following description are only drawings corresponding to some embodiments of the present utility model.
Fig. 1 is a schematic diagram of the overall structure of a button cell according to a preferred embodiment of the present utility model.
Fig. 2 is an exploded view of a button cell according to a preferred embodiment of the present utility model.
Fig. 3 is a schematic cross-sectional front view of a button cell according to a preferred embodiment of the present utility model.
Fig. 4 is a schematic perspective sectional structure of a button cell according to a preferred embodiment of the present utility model.
Fig. 5 is a schematic perspective sectional structure of an integrated structure of an inner case and a seal ring of a button cell according to a preferred embodiment of the present utility model.
Fig. 6 is an enlarged schematic view of the portion a in fig. 5.
Fig. 7 is a schematic structural view of an inner case of a button cell according to a preferred embodiment of the present utility model.
Fig. 8 is another embodiment of the through hole of the button cell according to the preferred embodiment of the present utility model.
Wherein,,
11. an inner shell is arranged on the inner side of the inner shell,
111. an inner end piece, a connecting piece and a connecting piece,
112. an inner cylinder is arranged on the inner side of the inner cylinder,
1121a, a through hole 1121b, a through hole 1122, a narrow section 1123, a clamping section 1124, a wide section,
12. a sealing ring, a sealing ring and a sealing ring,
121. an outer sealing cylinder 1211, a step structure 1212, a bone site,
122. the clamping structure is provided with a clamping structure,
123. the convex ring is provided with a convex ring,
124. an inner sealing cylinder is arranged on the inner side of the cylinder,
13. the outer shell of the shell is provided with a plurality of grooves,
131. the outer end piece is provided with a plurality of grooves,
132. an outer cylinder, 1321, a bending edge,
14. the electric core is arranged on the electric shell,
15. the first electrode tab is arranged on the first electrode,
16. and a second lug.
In the drawings, like structural elements are denoted by like reference numerals.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The terms of directions used in the present utility model, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "side", "top" and "bottom", are used for explaining and understanding the present utility model only with reference to the orientation of the drawings, and are not intended to limit the present utility model.
The words "first," "second," and the like in the terminology of the present utility model are used for descriptive purposes only and are not to be construed as indicating or implying relative importance and not as limiting the order of precedence.
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
Button cells in the prior art include an inner case, an outer case, and a gasket. When in assembly, the sealing ring is sleeved on the inner shell to form an assembly, then the assembly and the outer shell are assembled together, and finally the crimping packaging is carried out through the crimping jig. In the button cell in the prior art, the structural strength of the connection between the sealing ring and the inner shell is weaker, and when the sealing ring is subjected to larger external force, the sealing ring is easily separated from the inner shell, so that the quality of the button cell is poorer.
The following is a preferred embodiment of a button cell with high structural strength, which can solve the above technical problems.
Referring to fig. 1-7, a button cell with high structural strength is provided in a preferred embodiment of the present utility model, which includes an inner case 11, a sealing ring 12, an outer case 13, an electric core 14, a first tab 15 and a second tab 16. The inner shell 11 comprises an inner end sheet 111 and an inner barrel 112, the inner end sheet 111 is fixedly connected with one end of the inner barrel 112, the inner barrel 112 is perpendicular to the inner end sheet 111, the cross section of the inner shell 11 is U-shaped, and the other end of the inner barrel 112 is provided with a plurality of through holes 1121a along the circumference thereof. The seal ring 12 is integrally injection molded with the other end of the inner cylinder 112, and the seal ring 12 comprises an outer seal cylinder 121, a convex ring 123, an inner seal cylinder 124 and a plurality of clamping structures 122 connected between the inner seal cylinder 124 and the outer seal cylinder 121. The outer sealing cylinder 121 is fixedly connected with the outer wall of the inner cylinder 112, the inner sealing cylinder 124 is fixedly connected with the inner wall of the inner cylinder 112, the plurality of clamping structures 122 are correspondingly filled in the plurality of through holes 1121a one by one, and the convex ring 123 is fixedly connected with the end surface of the inner cylinder 112. The cross section of the sealing ring 12 is U-shaped. The sealing ring 12 can be made of plastic materials such as PP, PI, PS and the like, and the melting point of the sealing ring 12 is preferably 100-500 ℃. The shell 13 comprises an outer end piece 131 and an outer barrel 132, the outer barrel 132 is sleeved outside the outer sealing barrel 121 in an interference mode, the outer end piece 131 is fixedly connected with one end, far away from the inner end piece 111, of the outer barrel 132, the outer barrel 132 is perpendicular to the outer end piece 131, the cross section of the shell 13 is U-shaped, and the outer end piece 131 is abutted with the convex ring 123. The inner end piece 111 and the outer end piece 131 are parallel to each other, and the inner shell 11 and the outer shell 13 are preferably made of stainless steel or other hardware materials. The cells 14 are positioned in the inner barrel 112, and the cells 14 are wound or laminated, schematically shown in fig. 2. The first tab 15 is welded to both the cell 14 and the inner terminal 111. The second tab 16 is welded to both the cell 14 and the outer terminal 131.
The button cell with high structural strength has the advantages that the sealing ring 12 is positioned between the inner shell 11 and the outer shell 13 to play a role in isolation and sealing, the inner shell 11 is placed in a mould to be subjected to injection molding to form the sealing ring 12, so that the inner shell 11 and the sealing ring 12 are of an integrated structure, glue liquid flows into the through hole 1121a to form the clamping structure 122 during injection molding, the clamping structure 122 and the through hole 1121a form a buckling structure, the clamping structure 122 is connected with the inner sealing cylinder 124 and the outer sealing cylinder 121, and the structure ensures that the sealing ring 12 has stronger adhesive force with the inner shell 11, and is not easy to separate from the inner shell 11 when the sealing ring 12 is subjected to a specified external force; the inner shell 11 and the sealing ring 12 are of an integrated structure, so that the tightness of the battery is enhanced, the subsequent process of assembling the sealing ring 12 is reduced, and the assembly efficiency is improved; when glue is injected into the die, the through hole 1121a can enhance the fluidity of the glue solution, and avoid the phenomenon of lack of the glue of the sealing ring 12; when the internal temperature or internal pressure of the battery is abnormal, the through hole 1121a may become a rapid pressure release passage, improving the safety of the battery.
Referring to fig. 7, the through hole 1121a is circular. This structure is easy to process, and the glue solution easily fills the through hole 1121a, so that the adhesion between the seal ring 12 and the inner case 11 is stronger. In another embodiment, as shown in fig. 8, the through hole 1121b is square. The through-hole 1121a may be provided in a triangle, a polygon, a star, or an ellipse.
With continued reference to fig. 7, the number of through holes 1121a is 4-6, which are uniformly distributed along the circumferential direction of the inner cylinder 112. The 4-6 through holes 1121a can meet the requirements of button cells with most sizes, not only can ensure the structural stability, but also can simplify the process as much as possible. When the diameter of the button cell is small, 4 through holes 1121a which are uniformly distributed can be selected; when the diameter of the button cell is the middle size, 5 through holes 1121a uniformly distributed may be selected, and when the diameter of the button cell is large, 6 through holes 1121a uniformly distributed may be selected.
Referring to fig. 3, the inner cylinder 112 includes a narrow section 1122, a clamping section 1123 and a wide section 1124 connected in sequence along an axial direction thereof, the diameter of the wide section 1124 is larger than that of the narrow section 1122, the clamping section 1123 is connected between the narrow section 1122 and the wide section 1124 in an inclined manner, the through hole 1121a is located on the wide section 1124, the inner end piece 111 is fixedly connected with one end of the narrow section 1122, the outer sealing cylinder 121 covers the wide section 1124, the clamping section 1123 and a part of the narrow section 1122, and the outer sealing cylinder 121 forms an inclined step structure 1211 at the clamping section 1123. One end of the outer cylinder 132, which is far away from the outer end piece 131, is bent towards the axial direction of the outer cylinder 132 to form a bent edge 1321, and the bent edge 1321 is in limit clamping connection with the step structure 1211. With this structure, the step 1211 and the clamping section 1123 form a fastening structure, so that the sealing ring 12 is not easy to separate from the inner shell 11, meanwhile, the structure is convenient to process and form the step 1211, the clamping section 1123 is supported on the inner side of the step 1211, so that the fastening structure formed by the step 1211 and the bending edge 1321 is firmer, and the outer shell 13 is not easy to separate from the sealing ring 12. The clamping section 1123 is inclined, so that the step structure 1211 is inclined, the inclined bending edge 1321 is easier to form through the crimping jig, the clamping is firm, and the sealing performance is better.
With continued reference to FIG. 3, the inner wall of the inner seal cartridge 124 is flush with the inner wall of the narrow section 1122. The thicker the inner seal cartridge 124, the stronger its adhesion to the inner housing 11. But if the inner seal cartridge 124 is too thick it can affect the capacity of the cell 14. This structure can effectively utilize the inner space of the clamping section 1123 and the wide section 1124.
Referring to fig. 6, the outer wall of the outer sealing cylinder 121 is provided with a protruding bone site 1212 along the circumferential direction thereof, and the bone site 1212 is in interference connection with the outer cylinder 132. This structure makes the connection of the seal ring 12 with the housing 13 tighter, enhancing the tightness.
Referring to fig. 3, the inner surface of the inner end piece 111 is concave (not shown). The concave surface shape can be selected from cylindrical concave surface, hemispherical concave surface, conical concave surface, triangular concave surface, square concave surface, elliptic concave surface, or other special-shaped concave surface. In this structure, the inner surface of the inner end piece 111 is concave, so that the contact between the first tab 15 and the inner surface of the inner end piece 111 is tighter, and no risk of false welding or false welding is ensured during welding. The welding mode can be spot bottom resistance welding, double-needle resistance welding, laser welding, and the like, and double-needle resistance welding is preferred.
With continued reference to fig. 3, the inner surface of the outer end piece 131 is concave. The concave surface shape can be selected from cylindrical concave surface, hemispherical concave surface, conical concave surface, triangular concave surface, square concave surface, elliptic concave surface, or other special-shaped concave surface. In this structure, the inner surface of the outer end piece 131 is concave, so that the contact between the second lug 16 and the inner surface of the outer end piece 131 is tighter, and no risk of false welding or false welding is ensured during welding. The welding mode can be spot bottom resistance welding, double-needle resistance welding, laser welding, and the like, and double-needle resistance welding is preferred.
With continued reference to fig. 3, the outer surface of the outer end piece 131 is convex. With this structure, when the edge of the outer tube 132 is curled to form the bent edge 1321, the outer end piece 131 is made less susceptible to the pressure of the outer tube 132, so that the outer end piece 131 is made less susceptible to deformation.
With continued reference to fig. 3, the outer surface of the outer end piece 131 protrudes by a height of 0.05mm to 0.1mm. The outer surface of the outer end piece 131 protrudes too little to play a role of resisting rolling pressure; if the protruding height of the outer surface of the outer end piece 131 is too large, the contact area between the outer cylinder 132 and the battery can is too small when the button cell is mounted in the battery can, resulting in unstable mounting. The above-mentioned structure may be sized to meet the needs of a general button cell, and when the diameter of the button cell is small, the protruding height of the outer surface of the outer end piece 131 may be sized to be small between 0.05mm and 0.1 mm; when the diameter of the button cell is large, the height of the protrusion of the outer surface of the outer end piece 131 may be large in size between 0.05mm and 0.1mm.
The button cell with high structural strength in the preferred embodiment of the utility model comprises the following processing steps:
1. placing the inner shell 11 into a mold for injection molding to form a sealing ring 12, thereby forming an assembly with the inner shell 11 and the sealing ring 12 as a whole, wherein glue flows into the through hole 1121a to form a clamping structure 122 during injection molding, the clamping structure 122 is connected between the inner sealing cylinder 124 and the outer sealing cylinder 121, the clamping structure 122 and the through hole 1121a form a buckling structure, and the step structure 1211 and the clamping section 1123 form a buckling structure;
2. the outer shell 13 is sleeved outside the assembly, the edge of the outer cylinder 132 is rolled and pressed through a crimping jig to form a bent edge 1321, and the bent edge 1321 is in limit clamping connection with the step structure 1211;
3. the first tab 15 is welded to the inner surface of the inner end piece 111 and the second tab 16 is welded to the inner surface of the outer end piece 131.
Thus, the fabrication process of the button cell with great structural strength according to the preferred embodiment of the present utility model is completed.
The button battery with high structural strength is characterized in that the sealing ring is positioned between the inner shell and the outer shell to play a role in isolation and sealing, the inner shell is placed in the mould to be injection-molded to form the sealing ring, so that the inner shell and the sealing ring are of an integrated structure, glue liquid flows into the through hole to form a clamping structure during injection molding, the clamping structure and the through hole form a buckling structure, the clamping structure is connected with the inner sealing cylinder and the outer sealing cylinder, the structure enables the sealing ring and the inner shell to have stronger adhesive force, and the sealing ring is not easy to separate from the inner shell when the sealing ring is subjected to a specified external force; the inner shell and the sealing ring are of an integrated structure, so that the tightness of the battery is enhanced, the subsequent process of assembling the sealing ring is reduced, and the assembly efficiency is improved; when glue is injected into the die, the through holes can enhance the fluidity of the glue solution, and the phenomenon of glue shortage of the sealing ring is avoided; when the internal temperature or the internal pressure of the battery is abnormal, the through hole can become a rapid pressure relief channel, so that the safety of the battery is improved.
In summary, although the present utility model has been described with reference to the preferred embodiments, the scope of the utility model is not limited thereto, and any person skilled in the art who is skilled in the art should make equivalent substitutions or modifications according to the technical scheme of the present utility model within the scope of the present utility model.
Claims (10)
1. A button cell of great structural strength, comprising:
the inner shell comprises an inner end piece and an inner barrel, wherein the inner end piece is fixedly connected with one end of the inner barrel, and a plurality of through holes are formed in the other end of the inner barrel along the circumferential direction of the inner barrel;
the sealing ring is integrally injection molded with the other end of the inner cylinder and comprises an outer sealing cylinder, a convex ring and an inner sealing cylinder which are sequentially connected, and a plurality of clamping structures connected between the inner sealing cylinder and the outer sealing cylinder, wherein the outer sealing cylinder is fixedly connected with the outer wall of the inner cylinder, the inner sealing cylinder is fixedly connected with the inner wall of the inner cylinder, the plurality of clamping structures are correspondingly filled in the plurality of through holes one by one, and the convex ring is fixedly connected with the end face of the inner cylinder;
the outer shell comprises an outer end piece and an outer barrel, the outer barrel is sleeved outside the outer sealing barrel in an interference mode, the outer end piece is fixedly connected with one end, far away from the inner end piece, of the outer barrel, and the outer end piece is abutted with the convex ring;
the battery cell is positioned in the inner cylinder and is coiled or laminated;
the first tab is welded with the battery cell and the inner end piece; the method comprises the steps of,
and the second lug is welded with the battery cell and the outer end piece.
2. The structurally strong button cell defined in claim 1, wherein the through holes are circular.
3. The button cell of claim 1, wherein the number of through holes is 4-6 evenly distributed along the circumference of the inner barrel.
4. The button cell of claim 1, wherein the inner barrel comprises a narrow section, a clamping section and a wide section connected in sequence along an axial direction thereof, the diameter of the wide section is larger than that of the narrow section, the clamping section is connected between the narrow section and the wide section in an inclined manner, the through hole is positioned on the wide section, the inner end piece is fixedly connected with one end of the narrow section, the outer sealing barrel covers the wide section, the clamping section and a part of the narrow section, and the outer sealing barrel forms an inclined step structure at the clamping section;
one end of the outer barrel, which is far away from the outer end piece, is bent towards the axial direction of the outer barrel to form an inclined bending edge, and the bending edge is in limiting clamping connection with the step structure.
5. The structurally strong button cell defined in claim 4, wherein the inner wall of the inner seal cartridge is flush with the inner wall of the narrow section.
6. The button cell of claim 1, wherein the outer wall of the outer seal cartridge is provided with protruding bone sites along its circumference, the bone sites being in interference connection with the outer cartridge.
7. The structurally strong button cell defined in claim 1, wherein the inner surface of the inner end tab is concave.
8. The structurally strong button cell defined in claim 1, wherein the inner surface of the outer end piece is concave.
9. The structurally strong button cell defined in claim 1, wherein the outer surface of the outer end piece is convex.
10. The structurally strong button cell according to claim 9, wherein the outer surface of the outer end tab protrudes to a height of 0.05mm to 0.1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320063361.5U CN219180646U (en) | 2023-01-09 | 2023-01-09 | Button cell with high structural strength |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320063361.5U CN219180646U (en) | 2023-01-09 | 2023-01-09 | Button cell with high structural strength |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219180646U true CN219180646U (en) | 2023-06-13 |
Family
ID=86667856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320063361.5U Active CN219180646U (en) | 2023-01-09 | 2023-01-09 | Button cell with high structural strength |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219180646U (en) |
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2023
- 2023-01-09 CN CN202320063361.5U patent/CN219180646U/en active Active
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