CN220984667U - Cover plate sealing ring with extremely simple structure and lithium battery cover plate - Google Patents
Cover plate sealing ring with extremely simple structure and lithium battery cover plate Download PDFInfo
- Publication number
- CN220984667U CN220984667U CN202322184502.1U CN202322184502U CN220984667U CN 220984667 U CN220984667 U CN 220984667U CN 202322184502 U CN202322184502 U CN 202322184502U CN 220984667 U CN220984667 U CN 220984667U
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- Prior art keywords
- cover plate
- ring body
- sealing ring
- pole
- lithium battery
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Links
- 238000007789 sealing Methods 0.000 title claims abstract description 76
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 32
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 31
- 238000003466 welding Methods 0.000 claims description 26
- 230000000694 effects Effects 0.000 abstract description 5
- 238000001125 extrusion Methods 0.000 abstract description 3
- 230000008602 contraction Effects 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 210000004027 cell Anatomy 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 239000003792 electrolyte Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 238000010073 coating (rubber) Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 150000002641 lithium Chemical class 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000003446 memory effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- -1 specifically Substances 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 relates to a cover plate sealing ring with a very simple structure and a lithium battery cover plate, comprising a cover plate body and a sealing ring body, wherein the cover plate body is provided with a mounting groove, and two sides of the bottom wall of the mounting groove are provided with first buffer grooves; the sealing ring body is arranged in the mounting groove and comprises an inner ring body, a middle ring body and an outer ring body which are connected together; according to the utility model, the outer ring surface of the sealing ring body is designed to be wavy, the supporting part is formed between the adjacent grooves, the supporting part plays a role in positioning the appearance, the groove part serves as a sealing ring extrusion deformation abdication space, the middle ring body of the sealing ring body is designed to support the spherical shape, the convex joint of the middle ring body and the inner ring body forms a concave-convex clamping groove, so that after the sealing ring body is expanded, extruded and deformed, a part of the ring body is extruded to the abdication space, and the rest ring body is expanded into the first buffer groove, so that the inner diameter of the sealing ring is meshed, and the sealing ring is not easy to loosen after expansion and contraction, thereby achieving the effect of more stable sealing performance.
Description
Technical Field
The utility model relates to the technical field of lithium battery components, in particular to a cover plate sealing ring with a very simple structure and a lithium battery cover plate.
Background
As known in the art, a lithium battery is composed of a case, a lithium battery cell (composed of a plurality of positive and negative electrode sheets insulated and separated by a separator) provided in a case cavity of the case, and a cover plate. The lithium battery has the advantages of large capacity, light weight, long service period, high energy density, no memory effect, low self-discharge rate, environmental friendliness and the like, so that the lithium battery is widely applied to electric automobiles, electric bicycles, various hardware tools and the like.
The current lithium battery is characterized in that a shell and a cover plate are manufactured separately, then operations such as assembling and liquid injection are performed after a battery cell is assembled, and finally the complete lithium battery is formed. The lithium battery cover plate has a very important structural formula, the upper part of the lithium battery cover plate is provided with a pole column and other components, the liquid injection operation is carried out through the lithium battery cover plate, and in the later use process, a series of performances such as sealing performance, insulating performance and durability all reach corresponding standards.
The lithium battery cover plate is provided with a pole, the pole penetrates through the cover plate to be arranged, plastic parts used for insulating the pole are respectively arranged below and above the cover plate, and meanwhile, a corresponding sealing structure is arranged between the pole and the cover plate, and the sealing ring is generally adopted for sealing the pole. The existing sealing ring structure is of a flat ring structure, expansion can occur after electrolyte soaking, internal and external compression expansion forces of the sealing ring are uneven, an expansion space does not exist at the position of the outer diameter expansion part of the sealing ring, and an inner diameter expansion space is large, so that the sealing ring can expand towards one side of the inner diameter when expanding with heat and contracting with cold, the sealing ring cannot rebound to the original position after contracting with cold, the sealing ring is invalid, the sealing performance of a cover plate is affected, and the condition of liquid leakage occurs. In view of this, we propose a cover sealing ring and lithium battery cover of extremely simple structure.
Disclosure of utility model
The utility model aims to overcome the defects of the prior art, and solve the technical problems that after the sealing ring of the existing lithium battery cover plate is expanded, the expansion position of the outer diameter expansion part of the sealing ring is not provided with an expansion space, and only the sealing ring is expanded sideways, so that the sealing ring cannot rebound to the original position after cold shrinkage, the sealing ring is invalid, the sealing performance of the cover plate is influenced, and liquid leakage occurs.
In order to achieve the purpose of the utility model, the technical scheme adopted by the utility model is as follows:
The cover plate sealing ring with the extremely simple structure comprises a cover plate body and a sealing ring body, wherein the cover plate body is provided with a mounting groove, and two sides of the bottom wall of the mounting groove are provided with first buffer grooves;
The sealing ring body is arranged in the mounting groove and comprises an inner ring body, a middle ring body and an outer ring body which are connected together; the inner ring surface of the middle ring body is integrally connected with the outer ring surface of the inner ring body, and the outer ring surface of the middle ring body is integrally connected with the inner ring surface of the outer ring body; the middle ring body is of a sphere structure protruding towards two sides; the outer ring surface of the outer ring body is provided with a plurality of grooves at equal intervals, so that the outer ring surface of the outer ring body is in a wave shape.
The outer ring surface of the sealing ring body is designed to be wavy, namely a plurality of grooves are formed in the outer ring surface of the outer ring body at equal intervals, a supporting part is formed between every two adjacent grooves, the supporting part plays a role in positioning the appearance, the groove part serves as a compression deformation abdication space of the sealing ring, the middle ring body of the sealing ring body is designed to support a sphere shape, riveting occlusion stress is uniformly distributed, a concave-convex clamping groove is formed at the joint of the convex middle ring body and the inner ring body, after the sealing ring body expands, the sealing ring body is extruded to the abdication space, and the rest ring body expands into the first buffer groove, so that the inner diameter occlusion of the sealing ring is formed, and the sealing ring is not easy to loosen after thermal expansion and cold shrinkage, thereby achieving the effect of more stable sealing performance.
The utility model also provides a lithium battery cover plate, which comprises the cover plate sealing ring with the simple structure, a bracket, a pole column and a connecting sheet;
a through hole is formed in the middle of the bottom wall of the mounting groove;
The bracket is oppositely arranged below the cover plate body, and a connecting hole corresponding to the mounting groove is formed in the bracket;
The pole is arranged in the mounting groove, and a second buffer groove is formed in the bottom of the lower ring of the pole;
The connecting piece is supported at the bottom of the bracket and is fixedly connected with the middle of the bottom of the pole.
According to the utility model, the second buffer groove is formed in the bottom of the lower ring of the pole column of the lithium battery cover plate, the sealing ring body expands after being soaked by electrolyte, after the sealing ring body expands and extrudes and deforms, a part of the ring body is extruded to the position of the abdication space, and the rest ring body expands into the first buffer groove and the second buffer groove, so that the inner diameter of the sealing ring is meshed, and the sealing ring is not easy to loosen after expansion and contraction, thereby achieving the effect of more stable sealing performance.
Preferably, the cell wall top of mounting groove be equipped with apron turn-ups of apron body coupling, the upper end of apron turn-ups turns over inwards and supports on the lower anchor ring of utmost point post, not only can fix the utmost point post in the mounting groove like this, and follow-up rubber coating just forms the draw-in groove interlock so that the plastic just is difficult for droing.
Preferably, the pole cover further comprises upper plastic, and the upper plastic is coated on the outer parts of the pole and the cover plate flanging.
Preferably, the connecting piece comprises a main body portion and a protruding portion;
The main body part is flat and distributed on two sides of the bottom of the connecting hole;
the convex part is provided with a top wall and a side wall, the bottom of the side wall is integrally connected with one side, close to the middle part, of the main body part, and the edge of the top wall is integrally connected with the top end of the side wall to form a hollow cylindrical convex cavity structure; the protruding portion sequentially penetrates through the connecting hole, the through hole and the inner hole of the inner ring body, and the top wall of the protruding portion is welded and fixed with the middle of the bottom of the pole.
Preferably, a positioning hole communicated with the welding hole of the pole is formed in the center of the welding surface of the top wall, and the center of the pole can be found through laser scanning during welding, so that the welding cannot be eccentric, and the stability of welding can be improved.
Preferably, the welding surface of roof is equipped with the dull polish, can effectively reduce laser welding reflection of light problem for welded intensity is more stable.
Preferably, the connecting piece further comprises a protection piece, and the protection piece is welded at the bottom of the main body part of the connecting piece.
Compared with the prior art, the utility model has the beneficial effects that:
1. the outer ring surface of the sealing ring body is designed to be wavy, namely a plurality of grooves are formed in the outer ring surface of the outer ring body at equal intervals, a supporting part is formed between every two adjacent grooves, the supporting part plays a role in positioning the appearance, the groove part serves as a compression deformation abdication space of the sealing ring, the middle ring body of the sealing ring body is designed to support a sphere shape, riveting occlusion stress is uniformly distributed, a concave-convex clamping groove is formed at the joint of the convex middle ring body and the inner ring body, after the sealing ring body expands, the sealing ring body is extruded to the abdication space, and the rest ring body expands into the first buffer groove, so that the inner diameter occlusion of the sealing ring is formed, and the sealing ring is not easy to loosen after thermal expansion and cold shrinkage, thereby achieving the effect of more stable sealing performance.
2. Through having seted up the second dashpot in the lower ring bottom of the utmost point post of lithium cell apron, the sealing washer body can take place to expand after soaking through the electrolyte, and after the sealing washer body expansion extrusion deformation, some circle body extrudees to space department of stepping down, has remaining circle body expansion to first dashpot and second dashpot in.
3. The center of the welding surface of the top wall of the connecting sheet is provided with the positioning hole communicated with the welding hole of the pole, and the center of the pole can be found out through laser scanning during welding, so that the welding is not eccentric, and the stability of the welding can be improved; meanwhile, the welding surface of the top wall is provided with frosted surfaces, so that the problem of reflection of light in laser welding can be effectively reduced, and the welding strength is more stable.
4. According to the utility model, the cover plate flanging integrally connected with the cover plate body is arranged at the top of the groove wall of the mounting groove, and the upper end of the cover plate flanging is turned inwards and abutted against the lower annular surface of the pole, so that the pole can be fixed in the mounting groove, and the clamping groove is formed for engagement after the subsequent encapsulation, so that the plastic is not easy to fall off.
Drawings
FIG. 1 is a schematic view of a lithium battery cover plate with a cover plate seal ring with a very simple structure according to an embodiment of the utility model;
Fig. 2 is a schematic diagram of an explosion structure of a lithium battery cover plate with a cover plate sealing ring with a very simple structure according to an embodiment of the utility model;
FIG. 3 is a schematic top view of a seal ring according to an embodiment of the present utility model;
FIG. 4 is a schematic side view of a seal ring according to an embodiment of the present utility model;
FIG. 5 is a schematic side view of a pole according to an embodiment of the present utility model;
Fig. 6 is a schematic bottom view of a lithium battery cover plate with a cover plate sealing ring with a very simple structure according to an embodiment of the utility model;
FIG. 7 is a schematic top view of a connecting piece according to an embodiment of the present utility model;
fig. 8 is a schematic side view of a connecting piece according to an embodiment of the utility model.
The reference numerals in the figures illustrate:
1. A cover plate body; 11. a mounting groove; 111. a first buffer tank; 112. a through hole; 12. flanging the cover plate; 2. a seal ring body; 21. an inner ring body; 22. a middle ring body; 23. an outer ring body; 3. a bracket; 31. a connection hole; 4. a pole; 41. a second buffer tank; 5. a connecting sheet; 51. a main body portion; 52. a protruding portion; 521. a top wall; 5211. positioning holes; 522. a sidewall; 6. applying plastic; 7. and a protective sheet.
Detailed Description
The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:
Example 1
As shown in fig. 1, the present embodiment provides a lithium battery cover plate with a cover plate sealing ring having a very simple structure, which comprises a cover plate body 1, a sealing ring body 2, a bracket 3, a pole 4, a connecting sheet 5, an upper plastic 6 and a protecting sheet 7.
As shown in fig. 1 and 2, and referring specifically to the orientation of fig. 1, the cover plate body 1 of the present embodiment is made of aluminum or an aluminum alloy material, and one mounting groove 11 is respectively formed on the left and right sides of the cover plate body 1, and the two mounting grooves 11 have the same structure, so that description will be made by taking one of the mounting grooves 11 as an example: a through hole 112 is formed in the middle of the bottom wall of the mounting groove 11, and first buffer grooves 111 are formed in the bottom wall of the mounting groove 11 at two sides of the through hole 112; the top of the groove wall of the mounting groove 11 is provided with a cover plate flanging 12 which is integrally connected with the cover plate body 1.
As shown in fig. 1-4, and specifically referring to the azimuth of fig. 1, two mounting grooves 11 in this embodiment are respectively provided with a sealing ring body 2, specifically, as shown in fig. 3 and 4, the sealing ring body 2 includes an inner ring body 21, a middle ring body 22 and an outer ring body 23 which are connected together, the inner ring surface of the middle ring body 22 is integrally connected with the outer ring surface of the inner ring body 21, and the outer ring surface of the middle ring body 22 is integrally connected with the inner ring surface of the outer ring body 23; the middle ring body 22 is of a sphere structure protruding towards two sides; a plurality of grooves are formed in the outer ring surface of the outer ring body 23 at equal intervals, so that the outer ring surface of the outer ring body 23 is in a wave shape.
As shown in fig. 1 and fig. 2, and referring specifically to the orientation of fig. 1, the bracket 3 in this embodiment is made of an insulating material, specifically, PP material commonly used in the market may be adopted, the bracket 3 is mounted on the bottom of the cover plate body 1 by rivets, and two connection holes 31 are respectively formed on the bracket 3 and at positions opposite to the two mounting slots 11.
As shown in fig. 1, 2 and 4, and specifically referring to the azimuth of fig. 1, the two poles 4 in this embodiment are positive poles 4, one is negative pole 4, and the two poles 4 are respectively and correspondingly installed in two installation grooves 11, and taking the positive pole 4 as an example, the outer appearance structure of the pole 4 in this embodiment is in an inverted T shape, and the bottom of the lower ring of the pole 4 is provided with a second buffer groove 41.
As shown in fig. 1, fig. 2, and fig. 5-8, and referring specifically to the orientation of fig. 2, the two connection pieces 5 in this embodiment are provided with two connection pieces 5, which are symmetrically disposed and are respectively used for connecting with the positive electrode post 4 and the negative electrode post 4, where the connection piece 5 connected with the positive electrode post 4 is made of aluminum, the connection piece 5 connected with the negative electrode post 4 is made of red copper, specifically, taking one connection piece 5 as an example for description, the connection piece 5 includes a main body portion 51 and a protruding portion 52, the main body portion 51 is in a flat plate shape and is distributed on two sides of the bottom of the connection hole 31 and is fixed with the bracket 3 by a rivet, the protruding portion 52 has a top wall 521 and a side wall 522, the bottom of the side wall 522 is integrally connected with one side of the main body portion 51 near the middle, the top wall 521 edge is integrally connected with the top end of the side wall 522 to form a hollow cylindrical protruding cavity structure, the protruding portion 52 sequentially passes through the connection hole 31, the through hole 112 and the inner hole 21, and the top wall 521 of the protruding portion 52 is welded and fixed with the middle of the bottom of the electrode post 4;
as shown in fig. 1, 2 and 6-8, the welding surface of the top wall 521 of the protruding portion 52 in this embodiment is provided with frosted surface, which can effectively reduce the reflection problem of laser welding, so that the welding strength is more stable, and the center of the welding surface of the top wall 521 is provided with a positioning hole 5211 communicated with the welding hole of the pole 4, so that the center of the pole 4 can be found by laser scanning during welding, and thus the welding is not eccentric, and the stability of the welding can be improved.
As shown in fig. 1 and fig. 2, and specifically referring to the direction of fig. 1, the surfaces of the positive electrode post 4 and the negative electrode post 4 in this embodiment are both coated with the upper plastic 6, specifically, the upper end of the flange 12 of the cover plate in this embodiment is turned inwards and abutted against the lower annular surface of the post 4, so that the post 4 can be fixed in the mounting groove 11, and the subsequent encapsulation forms a clamping groove for engagement, so that the plastic is not easy to fall off, and after the assembly is finished, the outsides of the post 4 and the flange 12 of the cover plate can be encapsulated, thereby forming the upper plastic 6.
As shown in fig. 1, 2 and 8, and referring specifically to the orientation of fig. 1, in this embodiment, a protection sheet 7 is mounted at the bottom of each of the two connection sheets 5, and the section of the protection sheet 7 is in an "i" shape and is welded to the bottom of the main body 51 of each of the two connection sheets 5; in this embodiment, the protection sheet 7 located at the opposite position of the positive electrode post 4 is made of aluminum, and the protection sheet 7 located at the opposite position of the negative electrode post 4 is made of red copper.
Working principle: the utility model provides a lithium battery cover plate with a cover plate sealing ring with a simple structure, wherein a bracket 3 is butted at the bottom of a cover plate body 1, a connecting hole 31 of the bracket 3 is opposite to the position of a mounting groove 11 of the cover plate body 1, then the bracket 3 is butted at the cover plate body 1 by rivets, positive and negative pole posts 4 are placed in the corresponding mounting grooves 11, the upper end of a cover plate flanging 12 is turned inwards to be abutted against the lower annular surface of the pole post 4, thus the positive and negative pole posts 4 can be fixed in the mounting groove 11, then a connecting piece 5 is supported at the bottom of the bracket 3, a protruding part 52 sequentially passes through the connecting hole 31, a through hole 112 and an inner hole of an inner ring body 21 to be abutted with the middle of the bottom of the pole post 4, the top wall 521 of the protruding part 52 is found out by laser scanning, the middle of the top wall 521 of the protruding part 52 and the bottom of the pole post 4 is welded and fixed, then a main body part 51 of the connecting piece 5 is fixed with the bracket 3 by rivets, and finally a protection piece 7 is welded at the bottom of the main body part 51 of the connecting piece 5.
The outer ring surface of the sealing ring body 2 is designed to be wavy, namely a plurality of grooves are formed in the outer ring surface of the outer ring body 23 at equal intervals, a supporting part is formed between every two adjacent grooves, the supporting part plays a role in positioning the appearance, the groove part serves as a sealing ring extrusion deformation abdication space, the middle ring body 22 of the sealing ring body 2 is designed to be supported in a spherical shape, riveting occlusion stress is uniformly distributed, a concave-convex clamping groove is formed at the joint of the convex middle ring body 22 and the inner ring body 21, after the sealing ring body 2 is expanded and extruded to deform, a part of the ring body is extruded to the abdication space, and the rest ring body is expanded into the first buffer groove 111 and the second buffer groove 41, so that the inner diameter occlusion of the sealing ring is formed, and is difficult to loose after thermal expansion and cold shrinkage, so that the effect of more stable sealing performance is achieved.
The embodiments of the present utility model are disclosed as preferred embodiments, but not limited thereto, and those skilled in the art will readily appreciate from the foregoing description that various modifications and variations can be made without departing from the spirit of the present utility model.
Claims (8)
1. The utility model provides a cover plate sealing washer of extremely simple structure, includes apron body (1) and sealing washer body (2), its characterized in that: the cover plate comprises a cover plate body (1), wherein a mounting groove (11) is formed in the cover plate body, and first buffer grooves (111) are formed in two sides of the groove bottom wall of the mounting groove (11);
The sealing ring body (2) is arranged in the mounting groove (11), and the sealing ring body (2) comprises an inner ring body (21), a middle ring body (22) and an outer ring body (23) which are connected together; the inner ring surface of the middle ring body (22) is integrally connected with the outer ring surface of the inner ring body (21), and the outer ring surface of the middle ring body (22) is integrally connected with the inner ring surface of the outer ring body (23); the middle ring body (22) is of a sphere structure protruding towards two sides; a plurality of grooves are formed in the outer ring surface of the outer ring body (23) at equal intervals, so that the outer ring surface of the outer ring body (23) is in a wave shape.
2. A lithium battery cover plate, characterized in that: the cover plate sealing ring with the simple structure as claimed in claim 1, further comprising a bracket (3), a pole (4) and a connecting sheet (5);
A through hole (112) is formed in the middle of the bottom wall of the mounting groove (11);
The bracket (3) is oppositely arranged below the cover plate body (1), and the bracket (3) is provided with a connecting hole (31) corresponding to the mounting groove (11);
The pole (4) is arranged in the mounting groove (11), and a second buffer groove (41) is formed in the bottom of the lower ring of the pole (4);
The connecting sheet (5) is supported at the bottom of the bracket (3) and is fixedly connected with the middle of the bottom of the pole (4).
3. The lithium battery cover plate according to claim 2, wherein: the top of the groove wall of the mounting groove (11) is provided with a cover plate flanging (12) which is integrally connected with the cover plate body (1), and the upper end of the cover plate flanging (12) is inwards folded and propped against the lower annular surface of the pole (4).
4. The lithium battery cover plate of claim 3, wherein: the novel battery further comprises an upper plastic (6), wherein the upper plastic (6) is coated outside the pole (4) and the cover plate flanging (12).
5. The lithium battery cover plate according to claim 2, wherein: the connecting piece (5) comprises a main body part (51) and a protruding part (52);
the main body part (51) is flat and distributed on two sides of the bottom of the connecting hole (31);
The convex part (52) is provided with a top wall (521) and a side wall (522), the bottom of the side wall (522) is integrally connected with one side, close to the middle, of the main body part (51), and the edge of the top wall (521) is integrally connected with the top end of the side wall (522) to form a hollow cylindrical convex cavity structure; the protruding portion (52) sequentially penetrates through the connecting hole (31), the through hole (112) and the inner hole of the inner ring body (21), and the top wall (521) of the protruding portion (52) is welded and fixed with the middle of the bottom of the pole (4).
6. The lithium battery cover plate according to claim 5, wherein: a positioning hole (5211) communicated with the welding hole of the pole (4) is formed in the center of the welding surface of the top wall (521).
7. The lithium battery cover plate according to claim 6, wherein: the welding surface of the top wall (521) is provided with frosted surfaces.
8. The lithium battery cover plate according to claim 2, wherein: the connecting piece is characterized by further comprising a protection piece (7), wherein the protection piece (7) is welded at the bottom of the main body part (51) of the connecting piece (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322184502.1U CN220984667U (en) | 2023-08-15 | 2023-08-15 | Cover plate sealing ring with extremely simple structure and lithium battery cover plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322184502.1U CN220984667U (en) | 2023-08-15 | 2023-08-15 | Cover plate sealing ring with extremely simple structure and lithium battery cover plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220984667U true CN220984667U (en) | 2024-05-17 |
Family
ID=91059737
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322184502.1U Active CN220984667U (en) | 2023-08-15 | 2023-08-15 | Cover plate sealing ring with extremely simple structure and lithium battery cover plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220984667U (en) |
-
2023
- 2023-08-15 CN CN202322184502.1U patent/CN220984667U/en active Active
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