CN218548740U - High-energy-density cylindrical battery - Google Patents
High-energy-density cylindrical battery Download PDFInfo
- Publication number
- CN218548740U CN218548740U CN202222374833.7U CN202222374833U CN218548740U CN 218548740 U CN218548740 U CN 218548740U CN 202222374833 U CN202222374833 U CN 202222374833U CN 218548740 U CN218548740 U CN 218548740U
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- Prior art keywords
- battery
- anodal
- annular
- utmost point
- steel casing
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 52
- 239000010959 steel Substances 0.000 claims abstract description 52
- 238000007789 sealing Methods 0.000 claims description 27
- 239000000758 substrate Substances 0.000 claims description 17
- 238000005452 bending Methods 0.000 claims description 10
- 125000006850 spacer group Chemical group 0.000 claims description 2
- 238000003466 welding Methods 0.000 abstract description 8
- 238000003825 pressing Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 1
- 238000004519 manufacturing process 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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- Sealing Battery Cases Or Jackets (AREA)
Abstract
The utility model discloses a cylindrical battery of high energy density, including the battery steel casing, the inside of battery steel casing is provided with the battery core, the bottom of battery steel casing is provided with negative pole cover plate assembly, the top of battery steel casing is provided with anodal cover plate assembly, anodal cover plate assembly includes anodal utmost point post, anodal utmost point post sets up battery steel casing top, anodal utmost point post with be provided with the sealing-in subassembly between the battery steel casing, anodal utmost point post with be connected with anodal connection piece between the battery core, be provided with the through-hole on the anodal utmost point post. The utility model discloses seted up the through-hole on the anodal utmost point post, made things convenient for welding equipment to weld anodal connection piece and anodal utmost point post from anodal utmost point post top, need not to bend and fold anodal connection piece many times, from battery internal weld, save the battery inner space, so under the same space size, conveniently improve the energy density of battery.
Description
Technical Field
The utility model relates to a battery manufacturing technical field, concretely relates to high energy density cylindrical battery.
Background
The battery is a power supply device, and the battery has various types, and the battery has different shapes according to application scenes and conditions, and the cylindrical battery is one of the batteries, and generally comprises a pole (positive pole and negative pole), a battery core, a shell and the like, and an electrode connecting sheet is connected between the pole and the battery core;
fig. 7 shows a conventional cylindrical battery, which has disadvantages in that: when an electrode connecting sheet in the existing cylindrical battery is connected with a pole, the connecting sheet and the pole are welded together from the lower part of the pole to form a passage.
SUMMERY OF THE UTILITY MODEL
In order to overcome the above technical problem, the present invention provides a cylindrical battery with high energy density.
The purpose of the utility model can be realized by the following technical proposal:
the utility model provides a high energy density cylindrical battery, includes the battery steel casing, the inside of battery steel casing is provided with the battery core, the bottom of battery steel casing is provided with negative pole cover plate assembly, the top of battery steel casing is provided with anodal cover plate assembly, anodal cover plate assembly includes anodal utmost point post, anodal utmost point post sets up battery steel casing top, anodal utmost point post with be provided with the sealing-in subassembly between the battery steel casing, anodal utmost point post with be connected with anodal connection piece between the battery core, be provided with the through-hole on the anodal utmost point post, the cooperation of top port department of through-hole is provided with the clamp plate.
As a further scheme of the invention: the top port of the through hole is provided with an annular supporting step, and the top port of the through hole is connected with the pressing plate in a matched mode through the annular supporting step.
As a further scheme of the invention: the sealing-in subassembly includes anodal locking annular frame, anodal locking annular frame cooperation cover is established the bottom of anodal utmost point post, battery steel casing's top is provided with the throat ring of laminating at anodal locking annular frame upside, anodal locking annular frame with be provided with anodal sealing washer between the anodal utmost point post, the top cover of anodal utmost point post is equipped with and is in the anodal insulating gasket of throat ring upside, the top border of anodal utmost point post is provided with spacing bulge loop.
As a further scheme of the invention: the positive electrode insulating gasket is provided with an annular embedding groove, an annular steel sheet is embedded in the annular embedding groove, and the annular steel sheet is located on the lower side of the limiting convex ring.
As a further scheme of the invention: the negative electrode cover plate assembly comprises a negative electrode substrate, the negative electrode substrate is arranged on the inner side of the bottom of the battery steel shell, a negative electrode connecting piece is connected between the negative electrode substrate and the battery core, and a negative electrode sealing ring is arranged between the negative electrode substrate and the battery steel shell.
As a further scheme of the invention: the side wall of the inner ring of the negative electrode sealing ring is provided with an annular clamping groove, and the edge of the negative electrode substrate is embedded in the annular clamping groove.
As a further scheme of the invention: the battery steel casing is close to the bottom position and is provided with the annular structure of buckling, the laminating of annular structure of buckling is in negative pole sealing washer upside, the bottom border of battery steel casing be provided with the limit of buckling behind the negative pole sealing washer bottom subsides.
The utility model has the advantages that:
1. the through hole is formed in the positive pole column, so that the welding equipment can conveniently weld the positive connecting sheet and the positive pole column from the upper part of the positive pole column, the positive connecting sheet does not need to be bent and folded for multiple times, the internal space of the battery is saved by welding the internal part of the battery, and the energy density of the battery is conveniently improved under the same space size;
2. the utility model discloses a positive plate cover subassembly passes through throat riveting process and handles, but the whole assembly is fixed on battery steel shell, avoids riveting many times or welding process and increases the impaired probability of part.
Drawings
The invention is further described below with reference to the accompanying drawings.
FIG. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a schematic view of the three-dimensional structure of the positive electrode terminal and the battery core in the present invention;
fig. 3 is a schematic view of the three-dimensional structure of the cathode connecting sheet and the battery core in the present invention;
FIG. 4 is a schematic view of the overall cross-sectional structure of the present invention;
FIG. 5 is an enlarged schematic view of the structure at A in FIG. 4;
FIG. 6 is an enlarged schematic view of the structure at B in FIG. 4;
fig. 7 is a schematic structural view of a conventional cylindrical battery.
In the figure: 1. a battery steel casing; 2. a positive cover plate assembly; 3. a negative electrode cover plate assembly; 4. a positive pole column; 5. a positive electrode connecting sheet; 6. a battery cell; 7. a negative electrode connecting sheet; 8. an annular support step; 9. pressing a plate; 10. an annular steel sheet; 11. a positive electrode insulating spacer; 12. an annular fitting groove; 13. a through hole; 14. a positive electrode seal ring; 15. a positive stop ring; 16. a negative electrode sealing ring; 17. an annular neck; 18. a negative electrode substrate; 19. an annular bending structure; 20. a positive post; 21. an electrode connecting sheet; 22. a deck member; 23. a battery case; 24. a negative electrode assembly; 25. a necking ring; 26. a limit convex ring.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 7, the existing cylindrical battery includes a battery case 23, a negative electrode assembly 24 is assembled at the bottom of the battery case 23, a cover plate 22 is connected to the top of the battery case 23, a positive electrode post 20 is arranged on the cover plate 22, and an electrode connecting sheet 21 is connected to the bottom of the positive electrode post 20 in a matching manner.
As shown in fig. 1-6, a cylindrical battery with high energy density comprises a battery steel casing 1, a battery core 6 is assembled inside the battery steel casing 1, a negative cover plate assembly 3 is arranged at the bottom of the battery steel casing 1, the negative cover plate assembly 3 comprises a negative substrate 18, the negative substrate 18 is arranged at the inner side of the bottom of the battery steel casing 1, a negative connecting sheet 7 is welded between the negative substrate 18 and the battery core 6, a negative sealing ring 16 is arranged between the negative substrate 18 and the battery steel casing 1, an annular clamping groove 17 is formed in the inner ring side wall of the negative sealing ring 16, the edge of the negative substrate 18 is embedded in the annular clamping groove 17 so that the negative sealing ring 16 and the negative substrate 18 are assembled and connected together, an annular bending structure 19 is arranged at a position close to the bottom of the battery steel casing 1, the annular bending structure 19 is attached to the upper side of the negative sealing ring 16, a bending edge attached to the bottom of the battery steel casing 1 is arranged with the bottom of the negative sealing ring 16, and the annular bending structure 19 and the bending edge are used for limiting the negative sealing ring 16 so that the negative sealing ring is stably located at a corresponding position and the sealing effect is enhanced;
the top of the battery steel shell 1 is provided with a positive electrode cover plate component 2, the positive electrode cover plate component 2 comprises a positive electrode pole 4, the positive electrode pole 4 is arranged at the top of the battery steel shell 1, a sealing component is arranged between the positive electrode pole 4 and the battery steel shell 1, the sealing component comprises a positive electrode stopping annular frame 15, the positive electrode stopping annular frame 15 is sleeved at the bottom of the positive electrode pole 4 in a matching way, the positive electrode stopping annular frame 15 is positioned in the battery steel shell 1, the top of the battery steel shell 1 is provided with a necking ring 25 attached to the upper side of the positive electrode stopping annular frame 15, the necking ring 25 is obtained through necking process treatment, namely, the necking ring 25 and the battery steel shell 1 are of an integrated structure, a positive electrode sealing ring 14 is arranged between the positive electrode stopping annular frame 15 and the positive electrode pole 4, the outer ring side wall of the positive electrode sealing ring 14 is tightly attached to the inner ring side wall of the positive electrode stopping annular frame 15, the side wall of the inner ring of the positive electrode sealing ring 14 is tightly attached to the outer wall of the positive electrode post 4 to achieve a sealing effect, the top of the positive electrode post 4 is sleeved with a positive electrode insulating gasket 11 positioned on the upper side of a necking ring 25, the inner ring position of the top end face of the positive electrode insulating gasket 11 is provided with an annular embedding groove 12, an annular steel sheet 10 is embedded in the annular embedding groove 12, the top edge of the positive electrode post 4 is provided with a limiting convex ring 26 positioned on the upper side of the annular steel sheet 10, and the limiting convex ring 26 is formed by riveting after the positive electrode stopping annular frame 15, the positive electrode sealing ring 14, the positive electrode insulating gasket 11 and the annular steel sheet 10 are assembled, namely the limiting convex ring 26 and the positive electrode post 4 are of an integrated structure, so that the assembled components are conveniently limited and are combined and connected together;
the positive connecting sheet 5 is welded between the bottom of the positive pole 4 and the top of the battery core 6, the through hole 13 is formed in the middle of the positive pole 4, the through hole 13 facilitates welding of the positive connecting sheet 5 and the positive pole 4 by laser welding equipment from above the positive pole 4, an overlarge operation space is not required between the battery core 6 and the positive pole 4, and the overlarge space inside the battery is not occupied by bending and folding the positive connecting sheet 5; the top port of the through hole 13 is provided with an annular supporting step 8, the top port of the through hole 13 is provided with a pressing plate 9 in a matching way through the annular supporting step 8, and the pressing plate 9 is welded with the positive pole post 4 to form a complete positive pole cover plate component 2.
The utility model discloses positive seal ring 14, anodal stop ring shape frame 15, anodal utmost point post 4, anodal insulating pad 11 and annular steel sheet 10 among the positive cover plate subassembly 2 rely on the necking down riveting to assemble fixed connection once, have seted up through-hole 13 on anodal utmost point post 4 simultaneously, make things convenient for laser welding equipment to weld anodal connection piece 5 and anodal utmost point post 4 from anodal utmost point post 4 top.
The utility model discloses a 13 positions of through-hole offered on the anodal utmost point post 4 accomplish anodal connection piece 5 welding assembly back, detect the data that obtain as follows through the conventionality:
while one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention, and should not be considered as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.
Claims (7)
1. The utility model provides a cylindrical battery of high energy density, includes battery steel casing (1), the inside of battery steel casing (1) is provided with battery core (6), the bottom of battery steel casing (1) is provided with negative pole cover plate subassembly (3), the top of battery steel casing (1) is provided with anodal cover plate subassembly (2), its characterized in that, anodal cover plate subassembly (2) are including anodal utmost point post (4), anodal utmost point post (4) set up battery steel casing (1) top, anodal utmost point post (4) with be provided with the sealing-in subassembly between battery steel casing (1), anodal utmost point post (4) with be connected with anodal connection piece (5) between battery core (6), be provided with through-hole (13) on anodal utmost point post (4), the cooperation of top port department of through-hole (13) is provided with clamp plate (9).
2. A high energy density cylindrical battery according to claim 1, wherein the top port of the through hole (13) is provided with an annular support step (8), and the top port of the through hole (13) is fittingly connected with the pressure plate (9) through the annular support step (8).
3. The cylindrical battery with high energy density according to claim 1, wherein the sealing component comprises an anode locking annular frame (15), the anode locking annular frame (15) is matched with the anode pole (4) in a sleeved mode, a necking ring (25) attached to the upper side of the anode locking annular frame (15) is arranged at the top of the battery steel shell (1), an anode sealing ring (14) is arranged between the anode locking annular frame (15) and the anode pole (4), the top of the anode pole (4) is sleeved with an anode insulating gasket (11) located on the upper side of the necking ring (25), and a limiting convex ring (26) is arranged at the top edge of the anode pole (4).
4. A high energy density cylindrical battery as defined in claim 3, wherein the positive insulating spacer (11) is provided with an annular fitting groove (12), the annular fitting groove (12) is fitted with an annular steel sheet (10), and the annular steel sheet (10) is located at the lower side of the limit convex ring (26).
5. The cylindrical battery with high energy density according to claim 1, wherein the negative electrode cover plate component (3) comprises a negative electrode substrate (18), the negative electrode substrate (18) is arranged at the inner side of the bottom of the battery steel shell (1), a negative electrode connecting sheet (7) is connected between the negative electrode substrate (18) and the battery core (6), and a negative electrode sealing ring (16) is arranged between the negative electrode substrate (18) and the battery steel shell (1).
6. The cylindrical battery with high energy density according to claim 5, wherein the inner ring side wall of the negative electrode sealing ring (16) is provided with an annular clamping groove (17), and the edge of the negative electrode substrate (18) is embedded in the annular clamping groove (17).
7. The cylindrical battery with high energy density according to claim 5, wherein an annular bending structure (19) is arranged at a position close to the bottom of the battery steel casing (1), the annular bending structure (19) is attached to the upper side of the negative electrode sealing ring (16), and a bending edge attached to the bottom of the negative electrode sealing ring (16) is arranged at the bottom edge of the battery steel casing (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222374833.7U CN218548740U (en) | 2022-09-07 | 2022-09-07 | High-energy-density cylindrical battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222374833.7U CN218548740U (en) | 2022-09-07 | 2022-09-07 | High-energy-density cylindrical battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218548740U true CN218548740U (en) | 2023-02-28 |
Family
ID=85273449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222374833.7U Active CN218548740U (en) | 2022-09-07 | 2022-09-07 | High-energy-density cylindrical battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218548740U (en) |
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2022
- 2022-09-07 CN CN202222374833.7U patent/CN218548740U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A High Energy Density Cylindrical Battery Granted publication date: 20230228 Pledgee: China Postal Savings Bank Co.,Ltd. Ma'anshan Branch Pledgor: Ma'anshan Shengshi Technology Co.,Ltd. Registration number: Y2024980003752 |