CN219979671U - Practical lithium battery top cover - Google Patents
Practical lithium battery top cover Download PDFInfo
- Publication number
- CN219979671U CN219979671U CN202223418575.4U CN202223418575U CN219979671U CN 219979671 U CN219979671 U CN 219979671U CN 202223418575 U CN202223418575 U CN 202223418575U CN 219979671 U CN219979671 U CN 219979671U
- Authority
- CN
- China
- Prior art keywords
- ring
- top cover
- pole
- top surface
- lithium battery
- 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.)
- Active
Links
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 24
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 23
- 238000007789 sealing Methods 0.000 claims abstract description 55
- 125000006850 spacer group Chemical group 0.000 claims abstract description 38
- 230000006835 compression Effects 0.000 claims abstract description 14
- 238000007906 compression Methods 0.000 claims abstract description 14
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 230000003139 buffering effect Effects 0.000 abstract description 3
- 238000001125 extrusion Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 229910000733 Li alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000001989 lithium alloy Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 239000011255 nonaqueous electrolyte Substances 0.000 description 1
- 239000007774 positive electrode material 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 discloses a practical lithium battery top cover, which relates to the technical field of lithium batteries and comprises a top cover plate, wherein two mounting holes are formed in the top surface of the top cover plate, and a sealing ring is arranged on the top surface of each mounting hole; the pole is arranged on the top surface of the sealing ring, a space ring is nested outside the pole, a fixed compression ring is nested outside the space ring, and a gap exists between the bottom surface of the space ring and the top surface of the top cover sheet; the upper plastic is arranged on the top surface of the fixed compression ring, and the lower plastic is arranged on the bottom surface of the top cover plate; by reserving a gap between the bottom surface of the spacer ring and the top surface of the top cover sheet, the top cover sheet and the pole can extrude the sealing ring, and because the gap exists between the spacer ring and the top cover sheet, when the sealing ring is extruded by the top cover sheet and the pole, the gap between the spacer ring and the top cover sheet can play a role in buffering, so that the sealing ring is prevented from being over-pressed, the safety of the sealing ring is improved, and the sealing performance between the pole and the top cover sheet is ensured.
Description
Technical Field
The utility model relates to the technical field of lithium batteries, in particular to a practical lithium battery top cover.
Background
Lithium batteries are batteries using a nonaqueous electrolyte solution and using lithium metal or lithium alloy as a positive/negative electrode material, and along with development of science and technology, lithium batteries have become mainstream, and a lithium battery top cover is a sealing member arranged on the top surface of the lithium battery and mainly used for sealing the lithium battery;
at present, a sealing ring is arranged between a top cover sheet and a pole of a lithium battery, and is generally made of rubber, so that the sealing performance of the contact between the top cover sheet and the pole can be improved by the sealing ring, but in actual use, the sealing ring is subjected to larger extrusion force of the top cover sheet and the pole, so that the sealing ring is subjected to excessive pressure during working and is easy to crack, and the sealing performance between the top cover sheet and the pole is influenced.
Disclosure of Invention
In order to overcome the technical problems, the utility model aims to provide the practical lithium battery top cover, which is characterized in that a gap is reserved between the bottom surface of the spacer ring and the top surface of the top cover sheet, namely the bottom of the spacer ring is higher than the polar cylinder surface and is lower than the thickness of the sealing ring after compression, when the sealing ring is placed between the top cover sheet and the polar post, the top cover sheet and the polar post can squeeze the sealing ring, and because the gap exists between the spacer ring and the top cover sheet, when the sealing ring is squeezed by the top cover sheet and the polar post, the gap between the spacer ring and the top cover sheet can play a role of buffering, so that the overpressure of the sealing ring is prevented, the safety of the sealing ring is improved, and the sealing performance between the polar post and the top cover sheet is ensured.
The aim of the utility model can be achieved by the following technical scheme:
a utility lithium battery top cap, comprising:
the top surface of the top cover plate is provided with two mounting holes, and the top surface of each mounting hole is provided with a sealing ring;
the pole is arranged on the top surface of the sealing ring, a space ring is nested outside the pole, a fixed compression ring is nested outside the space ring, a gap exists between the bottom surface of the space ring and the top surface of the top cover sheet, namely the bottom of the space ring is higher than the pole cylindrical surface and is lower than the thickness of the compressed sealing ring, and the sealing ring is prevented from being over-pressed;
go up plastic and lower plastic, go up the plastic setting and fix the top surface of clamping ring, lower plastic sets up in the bottom surface of top cap piece.
As a further scheme of the utility model: the pole and the space ring are integrally injection molded, and the space ring can wrap the periphery of the pole to realize insulation or conduction of the pole.
As a further scheme of the utility model: the outer side and the inner wall of the space ring are provided with protruding blocks.
As a further scheme of the utility model: the outside of utmost point post has been seted up outer draw-in groove, outer draw-in groove and the lug of spacer ring inner wall agree with each other, after spacer ring and utmost point post cooperation, the outer draw-in groove on the utmost point post can cooperate with the lug of spacer ring inner wall, the position of fixed utmost point post prevents that the utmost point post from rotating.
As a further scheme of the utility model: the inner clamping groove is formed in the inner wall of the fixed compression ring, the protruding blocks on the outer side of the spacer ring of the inner clamping groove are mutually matched, and after the fixed compression ring is clamped on the outer side of the spacer ring, the inner clamping groove on the fixed compression ring can be matched with the protruding blocks on the outer side of the spacer ring to fix the position of the spacer ring and prevent the spacer ring from rotating.
As a further scheme of the utility model: the inner wall of mounting hole is equipped with the step, the position that the top surface of lower plastic is close to the step is equipped with the back-off, after the top surface of plastic and the bottom surface contact of top cap piece will be down, the back-off of plastic top surface can cooperate the step on the top cap piece down, forms buckle structure, fixes the bottom surface at the top cap piece with lower plastic, and the back-off occupies around the mounting hole one third, convenient equipment.
As a further scheme of the utility model: the top surface of mounting hole is close to the position of sealing washer and establishes the ring arch, the bottom surface of sealing washer has seted up the ring recess that agrees with each other with the ring arch, and the ring arch can block in the ring recess, fixes the position of sealing washer, makes the sealing washer more firm.
The utility model has the beneficial effects that: through reserving the clearance between the bottom surface of spacer ring and the top surface of top cap piece, that is spacer ring bottom is higher than the utmost point cylinder, is less than the thickness after the sealing washer compresses simultaneously, when putting the sealing washer between top cap piece and utmost point post, top cap piece and utmost point post can extrude the sealing washer, because there is the clearance between spacer ring and the top cap piece, when the sealing washer receives the extrusion of top cap piece and utmost point post, the clearance between spacer ring and the top cap piece can play the cushioning effect, prevent that the sealing washer from excessive pressure, improved sealing washer security, guaranteed sealing performance between utmost point post and the top cap piece.
Drawings
The utility model is further described below with reference to the accompanying drawings.
FIG. 1 is an exploded view of the present utility model;
FIG. 2 is a top view of the present utility model;
FIG. 3 is a cross-sectional view at A-A in FIG. 2;
fig. 4 is a partial enlarged view at B in fig. 3.
In the figure: 1. a top cover sheet; 11. a step; 12. a mounting hole; 2. a pole; 21. an outer clamping groove; 3. a spacer ring; 31. a bump; 4. fixing the compression ring; 41. an inner clamping groove; 5. a seal ring; 6. applying plastic; 7. lower plastic; 71. and (5) reversely buckling.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
As shown in fig. 1-4, a practical lithium battery top cover comprises a top cover sheet 1, two mounting holes 12 are formed in the top surface of the top cover sheet 1, a sealing ring 5 is arranged on the top surface of the mounting holes 12, a pole post 2 is arranged on the top surface of the sealing ring 5, a spacer ring 3 is nested outside the pole post 2, a fixing compression ring 4 is nested outside the spacer ring 3, a gap exists between the bottom surface of the spacer ring 3 and the top surface of the top cover sheet 1, and as a gap exists between the spacer ring 3 and the top cover sheet 1, after the sealing ring 5 is extruded by the top cover sheet 1 and the pole post 2, the gap between the spacer ring 3 and the top cover sheet 1 can play a buffering role, so that the sealing ring 5 is prevented from being over-pressed, and the sealing ring 5 arranged between the top cover sheet 1 and the pole post 2 can ensure the sealing performance between the pole post 2 and the top cover sheet 1;
as shown in fig. 3, the upper plastic 6 and the lower plastic 7, the upper plastic 6 is disposed on the top surface of the fixed compression ring 4, the lower plastic 7 is disposed on the bottom surface of the top cover 1, and the upper plastic 6 covers the fixed compression ring 4 to isolate the fixed compression ring 4 and the pole 2 from the outside.
The pole 2 and the space ring 3 are integrally injection molded, and the space ring 3 is coated on the outer side of the pole 2 to realize insulation or conduction of the pole 2.
As shown in fig. 1, the outer side and the inner wall of the spacer ring 3 are both provided with a bump 31, the outer side of the pole post 2 is provided with an outer clamping groove 21, the outer clamping groove 21 is mutually engaged with the bump 31 on the inner wall of the spacer ring 3, the inner wall of the fixed pressing ring 4 is provided with an inner clamping groove 41, the bump 31 on the outer side of the spacer ring 3 is mutually engaged, after the spacer ring 3 is engaged with the pole post 2, the outer clamping groove 21 on the pole post 2 can be engaged with the bump 31 on the inner wall of the spacer ring 3, the position of the pole post 2 is fixed, the pole post 2 is prevented from rotating, after the fixed pressing ring 4 is clamped on the outer side of the spacer ring 3, the inner clamping groove 41 on the fixed pressing ring 4 can be engaged with the bump 31 on the outer side of the spacer ring 3, and the position of the spacer ring 3 is prevented from rotating.
As shown in fig. 4, the inner wall of the mounting hole 12 is provided with a step 11, the top surface of the lower plastic 7 is provided with a back-off 71 near the step 11, the back-off 71 on the top surface of the lower plastic 7 can be matched with the step 11 on the top cover 1 to form a buckle structure, the lower plastic 7 is fixed on the bottom surface of the top cover 1, and the back-off 71 occupies one third of the periphery of the mounting hole 12, so that the assembly is convenient.
As shown in fig. 4, the top surface of the mounting hole 12 is close to the position of the sealing ring 5, the bottom surface of the sealing ring 5 is provided with a circular groove which is mutually matched with the circular groove, and after the sealing ring 5 is arranged between the top cover plate 1 and the pole 2, the circular groove can be clamped by the circular groove, so that the position of the sealing ring 5 is fixed, and the sealing ring 5 is more stable.
The working principle of the utility model is as follows:
firstly, the top surface of the lower plastic 7 is contacted with the bottom surface of the top cover piece 1, the inverted buckles 71 on the top surface of the lower plastic 7 are in one-to-one correspondence with the steps 11 on the top cover piece 1, the inverted buckles 71 on the top surface of the lower plastic 7 can be matched with the steps 11 on the top cover piece 1 to form a buckle structure, the lower plastic 7 is fixed on the bottom surface of the top cover piece 1, then the annular groove on the bottom surface of the sealing ring 5 is aligned with the annular bulge on the top surface of the mounting hole 12, the sealing ring 5 is placed on the top surface of the mounting hole 12, the pole 2 and the spacer ring 3 are integrally injection molded, then the pole 2 is placed on the top surface of the sealing ring 5, after the convex blocks 31 on the outer side of the spacer ring 3 are aligned with the inner clamping grooves 41 on the inner side of the fixing pressing ring 4, the fixing pressing ring 4 is sleeved on the outer side of the spacer ring 3, and finally, the upper plastic 6 is covered on the outer side of the fixing pressing ring 4, so that the assembly of the top cover of the lithium battery is completed.
The foregoing describes one embodiment of the present utility model in detail, but the description is only a preferred embodiment of the present utility model and should not be construed as limiting the scope of the utility model. All equivalent changes and modifications within the scope of the present utility model are intended to be covered by the present utility model.
Claims (7)
1. Practical lithium cell top cap, its characterized in that includes:
the top cover comprises a top cover piece (1), wherein two mounting holes (12) are formed in the top surface of the top cover piece (1), and a sealing ring (5) is arranged on the top surface of each mounting hole (12);
the pole column (2), the pole column (2) is arranged on the top surface of the sealing ring (5), a space ring (3) is nested outside the pole column (2), a fixed compression ring (4) is nested outside the space ring (3), and a gap exists between the bottom surface of the space ring (3) and the top surface of the top cover sheet (1);
go up plastic (6) and lower plastic (7), go up plastic (6) and set up the top surface at fixed clamping ring (4), lower plastic (7) set up the bottom surface at top cap piece (1).
2. A practical lithium battery top cover according to claim 1, characterized in that the pole (2) is injection molded integrally with the spacer (3).
3. The practical lithium battery top cover according to claim 1, wherein the outer side and the inner wall of the space ring (3) are provided with protruding blocks (31).
4. A practical lithium battery top cover according to claim 3, characterized in that an outer clamping groove (21) is formed on the outer side of the pole (2), and the outer clamping groove (21) is mutually matched with a protruding block (31) on the inner wall of the space ring (3).
5. A practical lithium battery top cover according to claim 3, wherein the inner wall of the fixing compression ring (4) is provided with an inner clamping groove (41), and the protruding blocks (31) on the outer side of the spacer ring (3) of the inner clamping groove (41) are mutually engaged.
6. The practical lithium battery top cover according to claim 1, wherein the inner wall of the mounting hole (12) is provided with a step (11), and the top surface of the lower plastic (7) is provided with a back-off (71) at a position close to the step (11).
7. The practical lithium battery top cover according to claim 1, wherein the top surface of the mounting hole (12) is provided with a circular ring bulge near the sealing ring (5), and the bottom surface of the sealing ring (5) is provided with a circular ring groove mutually matched with the circular ring bulge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223418575.4U CN219979671U (en) | 2022-12-20 | 2022-12-20 | Practical lithium battery top cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223418575.4U CN219979671U (en) | 2022-12-20 | 2022-12-20 | Practical lithium battery top cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219979671U true CN219979671U (en) | 2023-11-07 |
Family
ID=88593716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223418575.4U Active CN219979671U (en) | 2022-12-20 | 2022-12-20 | Practical lithium battery top cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219979671U (en) |
-
2022
- 2022-12-20 CN CN202223418575.4U patent/CN219979671U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |