CN220106704U - Riveting type cylindrical battery - Google Patents
Riveting type cylindrical battery Download PDFInfo
- Publication number
- CN220106704U CN220106704U CN202321678379.2U CN202321678379U CN220106704U CN 220106704 U CN220106704 U CN 220106704U CN 202321678379 U CN202321678379 U CN 202321678379U CN 220106704 U CN220106704 U CN 220106704U
- Authority
- CN
- China
- Prior art keywords
- insulating gasket
- cover plate
- lower insulating
- upper insulating
- positive electrode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000007789 sealing Methods 0.000 claims abstract description 18
- 238000002347 injection Methods 0.000 claims description 7
- 239000007924 injection Substances 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 7
- 238000004880 explosion Methods 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000001746 injection moulding Methods 0.000 description 3
- 239000011344 liquid material Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The utility model discloses a riveting type cylindrical battery, which relates to the technical field of cylindrical battery structures, wherein a sealing nail and an explosion-proof sheet are arranged on a positive electrode cover plate, a mounting hole is formed in the positive electrode cover plate, the riveting type cylindrical battery further comprises a pole, an upper insulating gasket, a lower insulating gasket and a pressing plate, an upper insulating sleeve is integrally formed on the bottom surface of the upper insulating gasket along the circumferential direction of a central hole of the upper insulating gasket, the upper insulating gasket is supported on the top surface of the positive electrode cover plate, the upper insulating sleeve is embedded in the mounting hole, a lower insulating sleeve is integrally formed on the top surface of the lower insulating gasket along the circumferential direction of the central hole of the lower insulating gasket, the lower insulating gasket is supported on the bottom surface of the positive electrode cover plate, and the lower insulating sleeve is embedded in the mounting hole. The beneficial effects of the utility model are as follows: the use safety is high, and the sealing between the pole and the positive electrode cover plate is tight.
Description
Technical Field
The utility model relates to the technical field of cylindrical battery structures, in particular to a riveting type cylindrical battery.
Background
Cylindrical batteries are typically included in the new energy power section to power the power section and thereby drive the power section. The structure of the cylindrical battery used by a certain new energy power part is shown in fig. 1-2, the cylindrical battery comprises a cylindrical shell 1, a positive electrode cover plate 2 and a pole 5, wherein the bottom of the cylindrical shell 1 is closed, an opening is formed in the top of the cylindrical shell 1, the positive electrode cover plate 2 is welded at the opening of the cylindrical shell 1, a sealing nail 3 and an explosion-proof piece 4 are arranged on the positive electrode cover plate 2, a mounting hole communicated with the cylindrical shell 1 is further formed in the positive electrode cover plate 2, the pole 5 penetrates through the mounting hole, a plastic part 16 is arranged between the pole 5 and the mounting hole in an injection molding mode, and the plastic part 16 fixedly connects the pole 5 and the positive electrode cover plate 2.
However, the plastic member 16 can fix the pole 5 and the positive electrode cover plate 2 together, but the following technical drawbacks still occur in the art: the plastic part 16 is formed by injection molding, and holes are necessarily formed in the plastic part during injection molding, so that liquid material in the cylindrical shell 1 flows out from the holes, the technical defect of inaccurate sealing exists, and meanwhile, the use safety of the whole cylindrical battery is reduced due to the existence of the holes. Therefore, there is a need for a cylindrical battery with high safety in use, in which the electrode post and the positive electrode cap plate are tightly sealed.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provide the riveting type cylindrical battery which is compact in structure, high in use safety and tight in sealing between a pole and a positive electrode cover plate.
The aim of the utility model is achieved by the following technical scheme: the riveting type cylindrical battery comprises a cylindrical shell and a positive electrode cover plate, wherein the bottom of the cylindrical shell is closed, the top of the cylindrical shell is provided with an opening, the positive electrode cover plate is welded at the opening of the cylindrical shell to seal the opening, the positive electrode cover plate is provided with a sealing nail and an explosion-proof piece, the positive electrode cover plate is provided with a mounting hole, the riveting type cylindrical battery further comprises a pole column, an upper insulating gasket, a lower insulating gasket and a pressing plate, the bottom surface of the upper insulating gasket is integrally formed with an upper insulating sleeve along the circumferential direction of a central hole of the upper insulating gasket, the upper insulating sleeve is supported on the top surface of the positive electrode cover plate, the upper insulating sleeve is embedded in the mounting hole, the top surface of the lower insulating gasket is integrally formed with a lower insulating sleeve along the circumferential direction of the central hole of the lower insulating gasket, and the lower insulating sleeve is supported on the bottom surface of the positive electrode cover plate;
an annular plate integrally formed with the outer cylindrical surface of the top end part of the pole is fixedly arranged on the outer cylindrical surface of the extending end, the lower end part of the pole sequentially penetrates through the central hole of the upper insulating gasket, the central holes of the upper insulating sleeve, the central holes of the lower insulating sleeve and the central holes of the lower insulating gasket from top to bottom, and a pressing plate is fixedly arranged on the outer cylindrical surface of the extending end, and the upper insulating gasket, the positive electrode cover plate and the lower insulating gasket are propped against the annular plate and the pressing plate;
the annular convex hull I is fixedly arranged on the bottom surface of the annular plate and distributed around the circumference of the annular plate, the annular convex hull I is embedded in the upper insulating gasket, the annular convex hull II is fixedly arranged on the top surface of the pressing plate and distributed around the circumference of the pressing plate, and the annular convex hull II is embedded in the lower insulating gasket.
And the positive electrode cover plate is provided with a liquid injection hole, and the sealing nail is arranged in the liquid injection hole.
And the explosion-proof piece and the anode cover plate are integrally formed.
And the explosion-proof piece is welded on the anode cover plate.
And a central hole is formed in the pressing plate, and the central hole of the pressing plate is in interference fit with the lower end part of the pole.
The rear side of the cylindrical shell is fixedly provided with a switching piece which stretches into the cylindrical shell, and the extending end is contacted with the bottom surface of the pole.
The utility model has the following advantages: compact structure, high safety, tight sealing between the pole and the positive cover plate.
Drawings
FIG. 1 is a schematic view of a cylindrical battery used in a new energy power section;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
FIG. 3 is a schematic diagram of the structure of the present utility model;
FIG. 4 is a top view of FIG. 3;
FIG. 5 is a cross-sectional view B-B of FIG. 4;
FIG. 6 is an enlarged partial view of section I of FIG. 5;
FIG. 7 is a schematic view of a structure of a pole;
FIG. 8 is a bottom view of FIG. 7;
FIG. 9 is a schematic view of the structure of an upper insulating washer;
FIG. 10 is a schematic view of the structure of a lower insulating gasket;
FIG. 11 is a schematic structural view of a platen;
in the figure, a 1-cylindrical shell, a 2-positive electrode cover plate, a 3-sealing nail, a 4-explosion-proof sheet, a 5-polar column, a 6-upper insulating gasket, a 7-lower insulating gasket, a 9-upper insulating sleeve, a 10-lower insulating sleeve, an 11-annular plate, a 12-pressing plate, a 13-annular convex hull I, a 14-annular convex hull II, a 15-switching sheet and a 16-plastic part.
Detailed Description
The utility model is further described below with reference to the accompanying drawings, the scope of the utility model not being limited to the following:
as shown in fig. 3 to 11, a rivet-press type cylindrical battery comprises a cylindrical shell 1 and a positive electrode cover plate 2, wherein the bottom of the cylindrical shell 1 is closed, an opening is formed in the top of the cylindrical shell 1, the positive electrode cover plate 2 is welded at the opening of the cylindrical shell 1 so as to seal the opening, a sealing nail 3 and an explosion-proof piece 4 are arranged on the positive electrode cover plate 2, a mounting hole is formed in the positive electrode cover plate 2, the rivet-press type cylindrical battery further comprises a pole 5, an upper insulating gasket 6, a lower insulating gasket 7 and a pressing plate 12, an upper insulating sleeve 9 is integrally formed on the bottom surface of the upper insulating gasket 6 along the circumferential direction of the central hole, the upper insulating sleeve 9 is embedded in the mounting hole, a lower insulating sleeve 10 is integrally formed on the top surface of the lower insulating gasket 7 along the circumferential direction of the central hole, the lower insulating sleeve 10 is supported on the bottom surface of the positive electrode cover plate 2, and the lower insulating sleeve 10 is embedded in the mounting hole;
as shown in fig. 3-11, an annular plate 11 integrally formed with the outer cylindrical surface of the top end of the pole 5 is fixedly arranged on the outer cylindrical surface of the top end of the pole 5, the lower end of the pole 5 sequentially penetrates through the central hole of the upper insulating gasket 6, the central holes of the upper insulating sleeve 9, the central holes of the lower insulating sleeve 10 and the central holes of the lower insulating gasket 7 from top to bottom, a pressing plate 12 is fixedly arranged on the outer cylindrical surface of the extending end, the central holes of the pressing plate 12 are formed in the pressing plate 12, the central holes of the pressing plate 12 are in interference fit with the lower end of the pole 5, and the upper insulating gasket 6, the positive electrode cover plate 2 and the lower insulating gasket 7 are all propped against between the annular plate 11 and the pressing plate 12; the bottom surface of the annular plate 11 is fixedly provided with a plurality of circles of annular convex hulls I13 distributed around the circumference of the annular convex hulls I13 embedded in the upper insulating gasket 6, the top surface of the pressing plate 12 is fixedly provided with a plurality of circles of annular convex hulls II14 distributed around the circumference of the annular convex hulls II14 embedded in the lower insulating gasket 7.
The positive electrode cover plate 2 is provided with a liquid injection hole, and the sealing nail 3 is arranged in the liquid injection hole. The explosion-proof piece 4 and the positive electrode cover plate 2 are integrally formed. The explosion-proof sheet 4 is welded on the positive electrode cover plate 2. The rear side of the cylindrical shell 1 is fixedly provided with a switching piece 15, the switching piece 15 stretches into the cylindrical shell 1, and the extending end is contacted with the bottom surface of the pole 5.
The assembly method of the cylindrical battery comprises the following steps:
s1, a worker embeds an upper insulating sleeve 9 of an upper insulating gasket 6 into a mounting hole of the positive electrode cover plate 2 from top to bottom, and supports the upper insulating gasket 6 on the top surface of the positive electrode cover plate 2;
s2, a worker embeds a lower insulating sleeve 10 of a lower insulating gasket 7 into a mounting hole of the positive electrode cover plate 2 from bottom to top, and supports the lower insulating gasket 7 on the bottom surface of the positive electrode cover plate 2;
s3, taking out one pole 5, sequentially penetrating the lower end part of the pole 5 through the central hole of the upper insulating gasket 6, the upper insulating sleeve 9, the lower insulating sleeve 10 and the central hole of the lower insulating gasket 7 from top to bottom, embedding the central hole of the pressing plate 12 into the lower end part of the pole 5, pressing the pressing plate 12 upwards along the axial direction of the pole 5, and pressing the upper insulating gasket 6, the positive electrode cover plate 2 and the lower insulating gasket 7 between the annular plate 11 and the pressing plate 12, so as to realize the fixation of the pole 5 and the positive electrode cover plate 2, wherein the annular convex hull I13 is embedded in the upper insulating gasket 6, and the annular convex hull II14 is embedded in the lower insulating gasket 7;
and S4, finally, welding the positive electrode cover plate 2 into the opening of the cylindrical shell 1, opening the sealing nail 3, and injecting liquid material into the cylindrical shell 1 through the liquid injection hole.
Under the riveting of the pressing plate 12 and the pole 5, the upper insulating gasket 6, the positive electrode cover plate 2 and the lower insulating gasket 7 are all propped between the annular plate 11 and the pressing plate 12, a first sealing surface is formed between the upper insulating gasket 6 and the top surface of the positive electrode cover plate 2 and between the lower insulating gasket 7 and the bottom surface of the positive electrode cover plate 2, meanwhile, the annular convex hull I13 is embedded in the upper insulating gasket 6, and meanwhile, the annular convex hull II14 is embedded in the lower insulating gasket 7, so that a second sealing surface is formed. Therefore, the cylindrical battery is provided with two sealing rings, liquid materials in the cylindrical shell 1 are effectively prevented from leaking out of the mounting holes, and compared with the cylindrical battery shown in fig. 1-2, the cylindrical battery has the technical characteristics of tighter sealing and higher use safety.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (6)
1. The utility model provides a cylindrical battery of riveting formula, it includes cylindricality casing (1) and positive pole apron (2), and wherein, the bottom of cylindricality casing (1) is sealed, and the opening has been seted up at the top of cylindricality casing (1), and positive pole apron (2) weld in the opening part of cylindricality casing (1) to seal the opening, be provided with sealing nail (3) and explosion proof piece (4) on positive pole apron (2), the mounting hole has been seted up on positive pole apron (2), its characterized in that: the cathode cover plate comprises a cathode column (5), an upper insulating gasket (6), a lower insulating gasket (7) and a pressing plate (12), wherein an upper insulating sleeve (9) is integrally formed on the bottom surface of the upper insulating gasket (6) along the circumferential direction of a central hole of the cathode cover plate, the upper insulating gasket (6) is supported on the top surface of the cathode cover plate (2), the upper insulating sleeve (9) is embedded in a mounting hole, a lower insulating sleeve (10) is integrally formed on the top surface of the lower insulating gasket (7) along the circumferential direction of the central hole of the lower insulating gasket, the lower insulating gasket (7) is supported on the bottom surface of the cathode cover plate (2), and the lower insulating sleeve (10) is embedded in the mounting hole;
an annular plate (11) integrally formed with the outer cylindrical surface of the top end part of the pole column (5) is fixedly arranged on the outer cylindrical surface of the top end part of the pole column (5), the lower end part of the pole column (5) sequentially penetrates through the central hole of the upper insulating gasket (6), the central hole of the upper insulating sleeve (9), the central holes of the lower insulating sleeve (10) and the central holes of the lower insulating gasket (7) from top to bottom, a pressing plate (12) is fixedly arranged on the outer cylindrical surface of the extending end, and the upper insulating gasket (6), the positive electrode cover plate (2) and the lower insulating gasket (7) are all propped against between the annular plate (11) and the pressing plate (12);
the annular convex hull I (13) which is distributed around the circumference of the annular plate (11) is fixedly arranged on the bottom surface of the annular plate (11), the annular convex hull I (13) is embedded into the upper insulating gasket (6), the annular convex hull II (14) which is distributed around the circumference of the annular plate is fixedly arranged on the top surface of the pressing plate (12), and the annular convex hull II (14) is embedded into the lower insulating gasket (7).
2. A rivet-press type cylindrical battery as set forth in claim 1, wherein: the positive electrode cover plate (2) is provided with a liquid injection hole, and the sealing nail (3) is arranged in the liquid injection hole.
3. A rivet-press type cylindrical battery as set forth in claim 1, wherein: the explosion-proof piece (4) and the anode cover plate (2) are integrally formed.
4. A rivet-press type cylindrical battery as set forth in claim 1, wherein: the explosion-proof sheet (4) is welded on the positive electrode cover plate (2).
5. A rivet-press type cylindrical battery as set forth in claim 1, wherein: a central hole is formed in the pressing plate (12), and the central hole of the pressing plate (12) is in interference fit with the lower end part of the pole (5).
6. A rivet-press type cylindrical battery as set forth in claim 1, wherein: the rear side of the cylindrical shell (1) is fixedly provided with a switching piece (15), the switching piece (15) stretches into the cylindrical shell (1), and the extending end is contacted with the bottom surface of the pole (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321678379.2U CN220106704U (en) | 2023-06-29 | 2023-06-29 | Riveting type cylindrical battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321678379.2U CN220106704U (en) | 2023-06-29 | 2023-06-29 | Riveting type cylindrical battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220106704U true CN220106704U (en) | 2023-11-28 |
Family
ID=88845857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321678379.2U Active CN220106704U (en) | 2023-06-29 | 2023-06-29 | Riveting type cylindrical battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220106704U (en) |
-
2023
- 2023-06-29 CN CN202321678379.2U patent/CN220106704U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |