CN219917355U - Cylindrical battery cover plate assembly and cylindrical battery - Google Patents
Cylindrical battery cover plate assembly and cylindrical battery Download PDFInfo
- Publication number
- CN219917355U CN219917355U CN202321192543.9U CN202321192543U CN219917355U CN 219917355 U CN219917355 U CN 219917355U CN 202321192543 U CN202321192543 U CN 202321192543U CN 219917355 U CN219917355 U CN 219917355U
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- Prior art keywords
- ring
- cylindrical battery
- insulating ring
- base plate
- rivet
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- 238000007789 sealing Methods 0.000 claims abstract description 48
- 238000003466 welding Methods 0.000 claims abstract description 16
- 239000000758 substrate Substances 0.000 claims abstract description 9
- 230000000149 penetrating effect Effects 0.000 claims abstract description 5
- 238000004804 winding Methods 0.000 claims description 7
- 239000004020 conductor Substances 0.000 claims description 4
- 239000011810 insulating material Substances 0.000 claims description 4
- 238000009413 insulation Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 7
- 238000003754 machining Methods 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 229910000838 Al alloy Inorganic materials 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 238000005266 casting Methods 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000004663 powder metallurgy Methods 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- -1 polypropylene Polymers 0.000 description 3
- 229910000975 Carbon steel Inorganic materials 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 239000010962 carbon steel Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000001723 curing Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 229920002379 silicone rubber Polymers 0.000 description 2
- 239000004945 silicone rubber Substances 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 229910000570 Cupronickel Inorganic materials 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 238000003848 UV Light-Curing Methods 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012671 ceramic insulating material Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 229920001973 fluoroelastomer Polymers 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- 238000013007 heat curing Methods 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000013008 moisture curing Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000012811 non-conductive material Substances 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000012812 sealant material Substances 0.000 description 1
- 238000010187 selection method Methods 0.000 description 1
- 238000007569 slipcasting Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Landscapes
- Connection Of Batteries Or Terminals (AREA)
Abstract
A cylindrical battery cover plate component is used for being matched with a base plate of a cylindrical battery shell and comprises rivets, an upper insulating ring, a sealing ring, a lower insulating ring, an insulating cover and a current collecting disc; the rivet comprises a cylinder body, an upper riveting part and a lower riveting part which are formed at two ends of the cylinder body after riveting, and a first through hole for the rivet to pass through is formed on the substrate; the upper insulating ring and the sealing ring are concentrically sleeved and overlapped on the outer side surface of the base plate, the upper insulating ring and the sealing ring are tightly pressed on the outer side surface of the base plate through the upper riveting part, and the lower insulating ring is provided with an annular boss which extends into the first through hole and is contacted with the sealing ring; the current collecting disc is overlapped on the inner side surface of the base plate through an insulating cover, the insulating cover is provided with a second through hole penetrating through the thickness direction of the insulating cover and used for being in connection with the lower insulating ring, a connecting shaft is formed on the current collecting disc in an extending mode in the direction close to the rivet, and the connecting shaft is inserted into the cylinder body to be fixedly connected with the rivet. The utility model not only reduces the requirement of assembly on concentricity, but also improves the manufacturability and reliability of the welding process.
Description
Technical Field
The utility model relates to the field of cylindrical lithium ion battery design, in particular to a cylindrical battery cover plate assembly and a cylindrical battery.
Background
One of the main trends of automobile power batteries is high energy density, high structural reliability, high safety and high cost performance. The cylindrical structure of the battery has the inherent advantages, particularly the large cylindrical structure, and the greatest advantages are achieved in terms of manufacturability and cost of manufacture. In the cylindrical battery structure, the sealing structure of the cover plate and the design of the connection structure between the cover plate and the winding core are key to the structural design and the manufacture of the cylindrical battery.
At present, the following typical design schemes are adopted for the sealing structure of the battery cover plate:
scheme one: the current collecting disc and the cover plate are electrically connected in the battery, generally, a welding rod passes through the central shaft of the winding core from the bottom of the winding core, the welding space is small, metal foreign matters are necessarily generated during welding, the welding is left in the battery, and the safety risks such as fire explosion and the like can be caused when the battery is used for a long time;
scheme II: the current collecting disc and the cover plate are electrically connected through laser penetration welding, requirements on thickness, machining precision and the like of a welding part are high, welding consistency is poor, and effective connection area is not easy to check.
Disclosure of Invention
Based on the structure, the utility model provides a cylindrical battery cover plate assembly and a cylindrical battery, so as to solve the technical problems that a connecting structure of a current collecting disc and a cover plate of the cylindrical battery in the prior art is not easy to operate, the process requirement is high, and potential safety hazards are easy to generate.
In order to achieve the above purpose, the utility model provides a cylindrical battery cover plate assembly, which is provided with a shell with a cylindrical structure, wherein the cylindrical battery cover plate assembly is used for being matched with a substrate at one end of the shell, the cylindrical battery cover plate assembly comprises a rivet, an upper insulating ring, a sealing ring, a lower insulating ring, an insulating cover and a current collecting disc, the upper insulating ring, the sealing ring, the lower insulating ring and the insulating cover are made of insulating materials, and the rivet, the substrate and the current collecting disc are made of conductive materials;
the rivet comprises a cylinder body, an upper riveting part and a lower riveting part which are formed at two ends of the cylinder body after riveting, and a first through hole which penetrates through the thickness direction of the substrate and is used for the rivet to penetrate through is formed in the substrate;
the upper insulating ring and the sealing ring are concentrically sleeved and overlapped on the outer side surface of the base plate, the sealing ring is positioned in the ring of the upper insulating ring and sleeved on the cylinder, the upper insulating ring and the sealing ring are tightly pressed on the outer side surface of the base plate through the upper riveting part, the lower insulating ring is overlapped on the inner side surface of the base plate and sleeved on the cylinder, the lower insulating ring is provided with an annular boss extending into the first through hole and contacted with the sealing ring, and the lower insulating ring is tightly pressed on the inner side surface of the base plate through the lower riveting part, so that insulation and sealing between the rivet and the base plate are realized through the combination of the upper insulating ring, the sealing ring and the lower insulating ring;
the current collecting disc is overlapped on the inner side surface of the base plate through the insulating cover, the insulating cover is provided with a second through hole penetrating through the thickness direction of the insulating cover and used for being in connection and matching with the lower insulating ring, a connecting shaft is formed on the current collecting disc in an extending mode towards the direction close to the rivet, and the connecting shaft is inserted into the cylinder body to be fixedly connected with the rivet and sealed.
As a further preferable technical scheme of the utility model, the connecting shaft further comprises a sealing plug, and the connecting shaft is inserted into the cylinder and seals the outer end of the cylinder through the sealing plug.
As a further preferable aspect of the present utility model, the connecting shaft is inserted into the cylinder body, fixed by welding, and sealed.
As a further preferable technical scheme of the utility model, the connecting shaft is a cylindrical boss provided with a step structure, and the inner hole structure of the cylinder body into which the connecting shaft is inserted is matched with the cylindrical boss.
As a further preferable technical scheme of the utility model, the lower insulating ring is connected with the insulating cover through lap joint.
As a further preferable technical scheme of the utility model, the surface of the base plate is provided with a groove for forming the explosion-proof valve.
According to another aspect of the present utility model, there is also provided a cylindrical battery including:
a housing, a cylindrical tubular structure;
the central shaft is in a cylindrical tubular structure and is coaxially arranged in the shell;
the winding core is arranged in a cavity between the central shaft and the shell; and
the cylindrical battery cover plate assembly is connected to one end of the shell and is in sealing connection with the shell, and the central shaft is connected with the current collecting disc.
As a further preferable aspect of the present utility model, the housing and the base plate are integrally formed, and the whole is in a cylindrical structure.
As a further preferable technical scheme of the utility model, a tubular connecting sleeve is formed on the collecting disc in an extending way towards the direction close to the rivet, and the collecting disc is in tight fit connection with the central shaft through the connecting sleeve.
The cylindrical battery cover plate assembly and the cylindrical battery provided by the utility model have the following beneficial effects that by adopting the technical scheme:
1) According to the cylindrical battery cover plate assembly, the central hole of the rivet is connected with the connecting shaft of the current collecting disc in an inserting mode and is in a semi-open mode (the connecting shaft is positioned in the central hole of the rivet), so that the requirement of assembly on concentricity is reduced, and the manufacturability and reliability of a welding process are improved;
2) According to the cylindrical battery pole cover plate component, the effective welding area (the overcurrent area, the maximum charge and discharge current of a battery is influenced) of the rivet and the current collecting disc can be adjusted by adjusting the diameter of a half-open area (the central hole of the rivet), and the welding area can be directly measured through an image system;
3) According to the cylindrical battery cover plate assembly, parts such as the upper insulating ring, the sealing ring, the base plate, the lower insulating ring and the insulating cover are extruded and assembled into a whole in a riveting mode, extrusion force required by axial compression is generated on the sealing ring, the inner part and the outer part of the sealed battery are compressed, and external water vapor/air can be prevented from entering the battery;
4) The cylindrical battery provided by the utility model has the advantages that the cylindrical battery cover plate component is adopted, the assembly process flow is simplified, the production efficiency is improved, and the reliability of the battery is also improved.
Drawings
The utility model will be described in further detail with reference to the drawings and the detailed description.
FIG. 1 is a perspective view of a cylindrical battery;
FIG. 2 is a cross-sectional view A-A of a cylindrical battery;
FIG. 3 is a schematic view of the structure of a cylindrical battery cover plate assembly in a cylindrical battery;
fig. 4 is an exploded view of a cylindrical battery;
FIG. 5 is a schematic view of the structure of the lower insulating ring;
fig. 6 is a schematic structural view of the collecting tray.
In the figure: 1. the cylindrical battery comprises a cylindrical battery body, 11, a shell, 12, a central shaft, 13, a winding core, 2, a cylindrical battery cover plate assembly, 21, a sealing plug, 22, rivets, 23, sealing rings, 24, an upper insulating ring, 25, a lower insulating ring, 251, an annular boss, 26, an insulating cover, 27, a current collecting disc, 271, a connecting shaft, 272, a connecting sleeve, 28, a base plate, 3 and a cylindrical battery lower cover plate.
The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The utility model will be further described with reference to the drawings and detailed description. The terms such as "upper", "lower", "left", "right", "middle" and "a" in the preferred embodiments are merely descriptive, but are not intended to limit the scope of the utility model, as the relative relationship changes or modifications may be otherwise deemed to be within the scope of the utility model without substantial modification to the technical context.
As shown in fig. 1 to 6, the present utility model provides a cylindrical battery cover assembly 2 having a housing 11 of cylindrical tubular structure, the cylindrical battery cover assembly 2 being adapted to mate with a base plate 28 at one end of the housing 11.
The cylindrical battery cover plate assembly 2 comprises a sealing plug 21, a rivet 22, a sealing ring 23, an upper insulating ring 24, a lower insulating ring 25, an insulating cover 26 and a current collecting disc 27, wherein the upper insulating ring 24, the sealing ring 23, the lower insulating ring 25 and the insulating cover 26 are made of insulating materials, the rivet 22, a base plate 28 and the current collecting disc 27 are made of conductive materials, and the sealing plug 21 can be made of conductive materials or non-conductive materials according to requirements.
The rivet 22 comprises a cylinder, an upper riveting part and a lower riveting part which are formed at two ends of the cylinder after being riveted, and the base plate 28 is provided with a first through hole penetrating through the thickness direction of the base plate for the rivet 22 to pass through.
The upper insulating ring 24 and the sealing ring 23 are concentrically sleeved and overlapped on the outer side surface of the base plate 28, the sealing ring 23 is positioned in the ring of the upper insulating ring 24 and sleeved on the cylinder, the upper insulating ring 24 and the sealing ring 23 are tightly pressed on the outer side surface of the base plate 28 through the upper riveting part, the lower insulating ring 25 is overlapped on the inner side surface of the base plate 28 and sleeved on the cylinder, the lower insulating ring 25 is provided with an annular boss 251 extending into the first through hole and contacted with the sealing ring 23, and the lower insulating ring 25 is tightly pressed on the inner side surface of the base plate 28 through the lower riveting part, so that insulation and sealing between the rivet 22 and the base plate 28 are realized through the combination of the upper insulating ring 24, the sealing ring 23 and the lower insulating ring 25.
The current collecting plate 27 is overlapped on the inner side surface of the base plate 28 through the insulating cover 26, the insulating cover 26 is provided with a second through hole penetrating through the thickness direction of the insulating cover for being in sleeve connection with the lower insulating ring 25, the current collecting plate 27 extends to the direction close to the rivet 22 to form a connecting shaft 271, and the connecting shaft 271 is inserted into the cylinder to be fixedly connected with the rivet 22. The connecting shaft 271 is inserted into the cylinder and seals the outer end of the cylinder through the sealing plug 21, the connecting shaft 271 is inserted into the cylinder and is fixed and sealed through welding, the collecting disc 27 and the connecting shaft 271 are of an integrated structure, and the connecting shaft 271 can be fixedly connected with the rivet 22 more conveniently, so that the assembly process flow is simplified, and the production efficiency is improved.
Preferably, the connecting shaft 271 is a cylindrical boss with a step structure, so that the inner hole structure of the cylinder body into which the connecting shaft 271 is inserted is matched with the cylindrical boss, and the inner hole boss of the cylinder body is connected with the connecting shaft 271 in a semi-open stitch welding mode, so that the requirement of assembly on concentricity is reduced, and the manufacturability and reliability of a welding process are improved.
It is further preferable that the lower insulating ring 25 is connected to the insulating cover 26 by a lap joint, i.e., the connection portions of the two are formed in a stepped shape and then lap-connected, so that the insulating performance between the base plate 28 and the current collecting plate 27 is improved.
After the upper insulating ring 24, the sealing ring 23, the base plate 28, the lower insulating ring 25 and the insulating cover 26 are assembled, the rivet 22 is riveted and formed by a riveting process to form a connection, and the riveting mode can be axial press riveting or radial spin riveting. Parts such as the upper insulating ring 24, the sealing ring 23, the base plate 28, the lower insulating ring 25, the insulating cover 26 and the like are extruded and assembled into a whole in a riveting mode, and extrusion force required by axial compression is generated on the sealing ring 23 to compress and seal the inside and the outside of the battery, so that external water vapor/air is prevented from entering the inside of the battery.
The material selection and processing method of each component in the cylindrical battery cover plate assembly are as follows:
the sealing plug 21 may be made of metal, including stainless steel, carbon steel, aluminum alloy, etc., and is formed by stamping, cold heading, machining, casting, powder metallurgy, etc.; the material can also be the sealant material of acrylic esters, epoxy resins and silicone rubber, and adopts curing modes such as UV curing, heat curing, moisture curing, anaerobic curing and the like by dispensing, spraying and the like.
The rivet 22 may be made of conductive metal such as aluminum or aluminum alloy, iron or iron-based alloy, nickel or alloy thereof, and is formed by punching, cold heading, machining, casting, powder metallurgy, etc.
The upper insulating ring 24, the lower insulating ring 25 and the insulating cover 26 can be made of polypropylene PP, polytetrafluoroethylene PTFE or polyethylene terephthalate PET and other plastic insulating materials, and are formed by injection molding, extrusion and other processing modes; the ceramic insulating material such as aluminum oxide can also be prepared by dry press molding, slip casting molding and other processing molding modes.
The seal ring 23 may be made of elastic rubber such as fluororubber or silicone rubber, and is molded by injection molding, extrusion, or the like.
A base plate 28 made of metal, including stainless steel, carbon steel, aluminum alloy, etc., and formed by stamping, cold heading, machining, casting, powder metallurgy, etc.; the surface of the base plate is provided with a notch-shaped groove which has the function of an explosion-proof valve and is used for reducing the explosion hazard of the battery.
The collecting plate 27 may be made of conductive metal such as aluminum or aluminum alloy, copper or copper alloy, nickel or alloy thereof, and is formed by punching, cold heading, machining, casting, powder metallurgy, etc.
As shown in fig. 1 to 6, the present utility model also provides a cylindrical battery including:
a housing 11;
the central shaft 12 is of a cylindrical tubular structure and is coaxially arranged in the shell 11, and a channel for electrolyte circulation is arranged in the central shaft 12:
a winding core 13 disposed in a cavity between the central shaft 12 and the housing 11; and
the cylindrical battery cover plate assembly 2, the cylindrical battery cover plate assembly 2 is connected to one end of the shell 11 and is in sealing connection with the shell 11, the central shaft 12 is connected with the current collecting disc 27, and the other end of the shell 11 is a cylindrical battery lower cover plate 3 in sealing connection with the shell 11.
Preferably, the housing 11 and the base plate 28 are integrally formed, and the whole is in a cylindrical structure, and can be formed by press working.
Specifically, a tubular connecting sleeve 272 extends on the collecting disc 27 towards the direction approaching the rivet 22, and the collecting disc 27 is in tight fit connection with the central shaft 12 through the connecting sleeve 272. Preferably, the central shaft 12 is a concentric thin-walled tube, the diameter of the connecting sleeve 272 is smaller than the inner diameter of the central shaft 12, and the connecting sleeve 272 at the lower end of the collecting disc 27 is inserted into the central shaft 12.
While particular embodiments of the present utility model have been described above, it will be appreciated by those skilled in the art that these are merely illustrative, and that many variations or modifications may be made to the embodiments without departing from the principles and spirit of the utility model, the scope of which is defined only by the appended claims.
Claims (9)
1. The cylindrical battery cover plate assembly is used for being matched with a substrate at one end of the shell, and is characterized by comprising rivets, an upper insulating ring, a sealing ring, a lower insulating ring, an insulating cover and a current collecting disc, wherein the upper insulating ring, the sealing ring, the lower insulating ring and the insulating cover are all made of insulating materials, and the rivets, the substrate and the current collecting disc are made of conductive materials;
the rivet comprises a cylinder body, an upper riveting part and a lower riveting part which are formed at two ends of the cylinder body after riveting, and a first through hole which penetrates through the thickness direction of the substrate and is used for the rivet to penetrate through is formed in the substrate;
the upper insulating ring and the sealing ring are concentrically sleeved and overlapped on the outer side surface of the base plate, the sealing ring is positioned in the ring of the upper insulating ring and sleeved on the cylinder, the upper insulating ring and the sealing ring are tightly pressed on the outer side surface of the base plate through the upper riveting part, the lower insulating ring is overlapped on the inner side surface of the base plate and sleeved on the cylinder, the lower insulating ring is provided with an annular boss extending into the first through hole and contacted with the sealing ring, and the lower insulating ring is tightly pressed on the inner side surface of the base plate through the lower riveting part, so that insulation and sealing between the rivet and the base plate are realized through the combination of the upper insulating ring, the sealing ring and the lower insulating ring;
the current collecting disc is overlapped on the inner side surface of the base plate through the insulating cover, the insulating cover is provided with a second through hole penetrating through the thickness direction of the insulating cover and used for being in connection and matching with the lower insulating ring, a connecting shaft is formed on the current collecting disc in an extending mode towards the direction close to the rivet, and the connecting shaft is inserted into the cylinder body to be fixedly connected with the rivet and sealed.
2. The cylindrical battery cover assembly of claim 1, further comprising a sealing plug, wherein the connecting shaft is inserted into the barrel and seals the outer end of the barrel with the sealing plug.
3. The cylindrical battery cover assembly of claim 1, wherein the connecting shaft is inserted into the cylinder and fixed and sealed by welding.
4. The cylindrical battery cover plate assembly according to claim 1, wherein the connecting shaft is a cylindrical boss provided with a step structure, and an inner hole structure of the cylinder body into which the connecting shaft is inserted is matched with the cylindrical boss.
5. The cylindrical battery cover assembly of claim 1, wherein the lower insulating ring is connected to the insulating cover by a lap joint.
6. The cylindrical battery cover plate assembly of claim 1, wherein the surface of the base plate is provided with grooves forming explosion-proof valves.
7. A cylindrical battery, comprising:
a housing;
the central shaft is in a cylindrical tubular structure and is coaxially arranged in the shell;
the winding core is arranged in a cavity between the central shaft and the shell; and
the cylindrical battery cover assembly of any one of claims 1-6, connected at one end to the housing and sealingly connected to the housing, the central shaft being connected to the current collecting tray.
8. The cylindrical battery according to claim 7, wherein the case is integrally formed with the base plate, and has a cylindrical shape as a whole.
9. The cylindrical battery according to claim 7, wherein a tubular connecting sleeve is formed on the current collecting disc in a manner of extending towards the direction close to the rivet, and the current collecting disc is connected with the central shaft in a plugging manner through the connecting sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321192543.9U CN219917355U (en) | 2023-05-16 | 2023-05-16 | Cylindrical battery cover plate assembly and cylindrical battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321192543.9U CN219917355U (en) | 2023-05-16 | 2023-05-16 | Cylindrical battery cover plate assembly and cylindrical battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219917355U true CN219917355U (en) | 2023-10-27 |
Family
ID=88440836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321192543.9U Active CN219917355U (en) | 2023-05-16 | 2023-05-16 | Cylindrical battery cover plate assembly and cylindrical battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219917355U (en) |
-
2023
- 2023-05-16 CN CN202321192543.9U patent/CN219917355U/en active Active
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