CN219717049U - Top cap subassembly and have its battery - Google Patents
Top cap subassembly and have its battery Download PDFInfo
- Publication number
- CN219717049U CN219717049U CN202320296928.3U CN202320296928U CN219717049U CN 219717049 U CN219717049 U CN 219717049U CN 202320296928 U CN202320296928 U CN 202320296928U CN 219717049 U CN219717049 U CN 219717049U
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- China
- Prior art keywords
- sealing
- connecting section
- battery
- top cover
- cover body
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- 238000007789 sealing Methods 0.000 claims abstract description 146
- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000009413 insulation Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000013011 mating 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
- 238000006467 substitution reaction Methods 0.000 description 1
Abstract
The utility model discloses a top cap assembly and a battery with the same, wherein the top cap assembly comprises: the top cover body is provided with a mounting hole penetrating through the top cover body; the pole edge comprises a first connecting section, a fixing section and a second connecting section, the fixing section is arranged in the mounting hole in a penetrating mode, and the first connecting section and the second connecting section are respectively positioned on two sides of the top cover body; the sealing ring surrounds the pole and comprises a first sealing part, a first groove is formed in the first sealing part, and a first protrusion matched with the first groove is arranged on the first connecting section. According to the top cover assembly, the pole is arranged in the mounting hole, the sealing ring is arranged between the pole and the top cover body, the first sealing part of the sealing ring can separate the first connecting section from the top cover body to play an insulating role, in addition, the first protrusion on the first connecting section is matched with the first groove on the first sealing part, the sealing area between the first connecting section and the first sealing part can be increased, and the sealing performance of the sealing ring is improved.
Description
Technical Field
The utility model relates to the field of power batteries, in particular to a top cover assembly and a battery with the top cover assembly.
Background
With the increasing maturity of battery technology, power batteries are widely used as novel batteries, and the requirements on the usability and safety of the power batteries are increasing. The sealing ring is used as an important structural member of the power battery, the sealing ring in the current market adopts a surface contact sealing mode, the sealing effect is not ideal, external foreign matters or internal electrolyte often enter between the shell and the pole, the quality is abnormal, and the specific insulating effect is not born.
Disclosure of Invention
The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides the top cover assembly, which has larger sealing area and better sealing performance.
The utility model also provides a battery, which comprises the top cover assembly.
The top cover assembly comprises a top cover body, a pole and a sealing ring, wherein the top cover body is provided with a mounting hole penetrating through the top cover body in the thickness direction of the top cover body; the pole column sequentially comprises a first connecting section, a fixing section and a second connecting section along the axial direction of the pole column, wherein the cross sectional area of the first connecting section and the second connecting section in the direction vertical to the thickness direction of the top cover body is larger than the cross sectional area of the fixing section in the direction vertical to the thickness direction of the top cover body, the fixing section penetrates through the mounting hole, and the first connecting section and the second connecting section are respectively positioned at two sides of the thickness direction of the top cover body; the sealing ring surrounds the pole and comprises a first sealing part, the first sealing part is located between the first connecting section and the top cover body, a first groove extending along the circumferential direction of the first sealing part is formed in the surface of the first connecting section, a first protrusion matched with the first groove is formed in the surface of the first connecting section, and the first protrusion extends along the circumferential direction of the first connecting section.
According to the top cover assembly provided by the embodiment of the utility model, the pole is arranged in the mounting hole, the sealing ring is arranged between the pole and the top cover body, the sealing ring surrounds the pole and comprises the first sealing part, and the first sealing part is positioned between the first connecting section of the pole and the top cover body, so that the first connecting section and the top cover body can be separated from each other to play an insulating role. In addition, the first bulge on the first connecting section is matched with the first groove on the first sealing part, so that the sealing area between the first connecting section and the first sealing part can be increased, the sealing effect can be improved, and the sealing performance of the first sealing part is improved, thereby improving the sealing performance of the sealing ring.
In some embodiments of the utility model, the seal ring further comprises: and one end of the first insulating part is connected with the radial inner end of the first sealing part, and the first insulating part is positioned between the inner wall of the mounting hole and the outer peripheral wall of the fixed section.
Further, the sealing ring further comprises: the second sealing part is positioned between the top cover body and the second connecting section, and the radial inner end of the second sealing part is connected with one end, far away from the first sealing part, of the first insulating part.
Further, a second groove extending in the circumferential direction of the second sealing portion is provided on a surface of the second connecting section facing the second sealing portion, a second protrusion engaged with the second groove is provided on a surface of the second connecting section facing the second sealing portion, and the second protrusion extends in the circumferential direction of the second connecting section.
In addition, the sealing ring further comprises: and the second insulating part is positioned on the radial outer side of the second connecting section, and one end of the second insulating part is connected with the radial outer end of the second sealing part.
In some embodiments of the present utility model, the top cap assembly further comprises: and the upper plastic comprises a first plastic part, and the first plastic part is positioned between the first connecting section and the top cover body and surrounds the first sealing part.
Further, the upper plastic part further comprises a second plastic part, the second plastic part is connected with the radial outer end of the first plastic part, and the second plastic part is arranged around the first connecting section.
In some embodiments of the present utility model, the top cover body has a concave portion concave toward one side of the second connecting section, the mounting hole penetrates a bottom wall of the concave portion, and the first sealing portion is located in the concave portion.
The battery according to the embodiment of the utility model comprises the top cover assembly.
According to the battery provided by the embodiment of the utility model, the pole is arranged in the mounting hole, the sealing ring is arranged between the pole and the top cover body and surrounds the pole and comprises the first sealing part, and the first sealing part is positioned between the first connecting section of the pole and the top cover body, so that the first connecting section and the top cover body can be separated from each other to play an insulating role. In addition, the first bulge on the first connecting section is matched with the first groove on the first sealing part, so that the sealing area between the first connecting section and the first sealing part can be increased, the sealing effect can be improved, and the sealing performance of the first sealing part is improved, thereby improving the sealing performance of the sealing ring. At this time, the battery has a good sealing effect, and foreign matters such as external gas or water can be prevented from entering the battery, so that the working reliability of the battery is higher, and the safety of the battery is higher.
In some embodiments of the utility model, the battery is a cylindrical battery.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
fig. 1 is a cross-sectional view of a battery according to an embodiment of the present utility model;
FIG. 2 is an enlarged view at A in FIG. 1;
fig. 3 is a perspective view of a battery according to an embodiment of the present utility model;
FIG. 4 is a cross-sectional view of a post and seal ring of a cap assembly according to an embodiment of the present utility model;
fig. 5 is a cross-sectional view of a pole of the cap assembly according to an embodiment of the present utility model;
FIG. 6 is a cross-sectional view of a seal ring of a cap assembly according to an embodiment of the present utility model;
reference numerals:
100. a battery;
10. a top cover assembly;
1. a top cover body; 11. a mounting hole; 12. a concave portion;
2. a pole; 21. a first connection section; 211. a first protrusion; 22. a fixed section; 23. a second connection section; 231. a second protrusion;
3. a seal ring; 31. a first sealing part; 311. a first groove; 32. a first insulating portion; 33. a second sealing part; 331. a second groove; 34. a second insulating portion;
4. applying plastic; 41. a first plastic part; 42. a second plastic part.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
A top cap assembly 10 according to an embodiment of the present utility model is described below with reference to fig. 1 to 6.
Specifically, as shown in fig. 1, 2, 3 and 4, the cap assembly 10 according to the embodiment of the present utility model includes a cap body 1, a pole 2 and a seal ring 3.
The top cap body 1 has the mounting hole 11 that runs through top cap body 1 in top cap body 1 thickness direction, the utmost point post 2 is installed in mounting hole 11, utmost point post 2 includes first linkage segment 21 in proper order along the axial direction of utmost point post 2, fixed section 22 and second linkage segment 23, the cross-sectional area of first linkage segment 21 and second linkage segment 23 in the direction of being greater than the cross-sectional area of fixed section 22 in the direction of being perpendicular to top cap body 1 thickness in perpendicular to top cap body 1 thickness direction, fixed section 22 wears to locate in mounting hole 11, first linkage segment 21 and second linkage segment 23 are located top cap body 1 thickness direction's both sides respectively for utmost point post 2 all has spacingly in top cap body 1 thickness direction's both sides.
The sealing ring 3 surrounds the pole 2 and comprises a first sealing part 31, the first sealing part 31 is located between the first connecting section 21 of the pole 2 and the top cover body 1, an insulating effect can be achieved on the first connecting section 21 and the top cover body 1, a first groove 311 extending along the circumferential direction of the first sealing part 31 is formed in the surface of the first sealing part 31 facing the first connecting section 21, a first protrusion 211 matched with the first groove 311 is formed in the surface of the first connecting section 21 facing the first sealing part 31, the first protrusion 211 extends along the circumferential direction of the first connecting section 21, and the first groove 311 extends along the circumferential direction of the first connecting section 21. For example, in the example shown in fig. 1, the first protrusion 211 and the first groove 311 each extend in a ring shape in the circumferential direction of the first connection section 21.
Wherein, the first protrusion 211 on the first connection section 21 is matched with the first groove 311 on the first sealing portion 31, so that the sealing area between the first connection section 21 and the first sealing portion 31 can be increased, the sealing effect can be improved, and the sealing performance of the first sealing portion 31 is improved, thereby improving the sealing performance of the sealing ring 3. In addition, by providing the first protrusion 211 and the first groove 311, foreign matters such as gas or water in the working environment of the battery 100 can be blocked by the first protrusion 211 when entering from the contact surface between the first connection section 21 and the first sealing part 31, and foreign matters such as external gas or water can be prevented from entering the battery 100, so that the sealing performance of the first sealing part 31 is improved, and the sealing performance of the sealing ring 3 is improved.
According to the top cap assembly 10 of the embodiment of the present utility model, by installing the pole 2 in the installation hole 11 and disposing the seal ring 3 between the pole 2 and the top cap body 1, the seal ring 3 surrounds the pole 2 and includes the first seal portion 31, and the first seal portion 31 is located between the first connection section 21 of the pole 2 and the top cap body 1, the first connection section 21 and the top cap body 1 can be spaced apart to perform an insulating function. In addition, the first protrusion 211 on the first connection section 21 is matched with the first groove 311 on the first sealing part 31, so that the sealing area between the first connection section 21 and the first sealing part 31 can be increased, the sealing effect can be improved, and the sealing performance of the first sealing part 31 is improved, thereby improving the sealing performance of the sealing ring 3.
In some embodiments of the present utility model, as shown in fig. 2 and 6, the seal ring 3 further includes a first insulating portion 32, one end of the first insulating portion 32 is connected to a radially inner end of the first sealing portion 31, and the first insulating portion 32 is located between an inner wall of the mounting hole 11 and an outer circumferential wall of the fixing segment 22. The first insulating part 32 surrounds the fixed section 22 of the pole 2, and the first sealing part 31 is located at one side of the thickness direction of the top cover body 1, so that the fixed section 22 of the pole 2 can be spaced from the inner wall of the mounting hole 11 of the top cover body 1 to play an insulating role, and the contact conduction between the mounting hole 11 of the top cover body 1 and the pole 2 is prevented.
Further, as shown in fig. 2 and 6, the seal ring 3 further includes a second sealing portion 33, the second sealing portion 33 is located between the cap body 1 and the second connection section 23, and the second sealing portion 33 is located at the other side of the cap body 1 in the thickness direction, and a radially inner end of the second sealing portion 33 is connected to one end of the first insulating portion 32 away from the first sealing portion 31, so that an insulating effect can be exerted on the second connection section 21 and the cap body 1.
Further, as shown in fig. 2, 5 and 6, the surface of the second sealing portion 33 facing the second connecting section 23 is provided with a second groove 331 extending in the circumferential direction of the second sealing portion 33, the surface of the second connecting section 23 facing the second sealing portion 33 is provided with a second protrusion 231 mating with the second groove 331, the second protrusion 231 extends in the circumferential direction of the second connecting section 23, and the second groove 331 extends in the circumferential direction of the second connecting section 23. For example, in the example shown in fig. 1, the second projection 231 and the second groove 331 each extend in an annular shape in the circumferential direction of the second connecting section 23.
Local line contact is generated between the second protrusion 231 and the second groove 331, so that the sealing area between the second connection section 23 and the second sealing part 33 can be increased, and by arranging the second protrusion 231 and the second groove 331, foreign matters such as gas or water in the working environment of the battery 100 can be blocked by the second protrusion 231 when entering from the contact surface between the second connection section 23 and the second sealing part 33, and foreign matters such as external gas or water can be prevented from entering the battery 100, and the sealing performance of the second sealing part 33 is improved, so that the sealing performance of the sealing ring 3 is improved. In addition, by arranging the second sealing part 33, the arrangement of the lower plastic can be omitted, which is beneficial to reducing the cost and simplifying the assembly process.
In addition, as shown in fig. 4 and 6, the seal ring 3 further includes a second insulating portion 34, the second insulating portion 34 being located radially outward of the second connecting section 23, one end of the second insulating portion 34 being connected to a radially outer end of the second sealing portion 33. At this time, the second insulating portion 34 surrounds the second connection section 23 of the pole 2, and the second sealing portion 33 is located at the other side of the thickness direction of the top cover body 1, so that the second connection section 23 of the pole 2 can be spaced apart from the top cover body 1, and an insulating effect is achieved, so that the top cover body 1 and the pole 2 are prevented from contacting and conducting. The second insulating part 34 is connected with the second sealing part 33, and the sealing ring 3 can insulate the second connecting section 23 of the pole 2 from the top cover body 1 by utilizing the second insulating part 34 of the sealing ring 3 while sealing the pole 2 from the top cover body 1, so that the sealing and insulating effects of the second connecting section 23 and the top cover body 1 are integrated on the sealing ring 3, the assembly efficiency is improved, and the cost is greatly saved.
In some embodiments of the present utility model, as shown in fig. 1 and 2, the top cap assembly 10 further includes an upper plastic 4, wherein the upper plastic 4 includes a first plastic portion 41, and the first plastic portion 41 is located between the first connection section 21 and the top cap body 1 and surrounds the first sealing portion 31, so that the first connection section 21 may be spaced apart from the top cap body 1, and may perform an insulating function on the first connection section 21 and the top cap body 1, preventing the top cap body 1 and the first connection section 21 from contacting and conducting, and preventing the top cap body 1 and the pole 2 from contacting and conducting.
Further, as shown in fig. 1 and 2, the upper plastic part 4 further includes a second plastic part 42, the second plastic part 42 is connected to the radially outer end of the first plastic part 41, and the second plastic part 42 is disposed around the first connecting section 21. At this time, the second plastic part 42 wraps the first connection section 21 of the pole 2, the second plastic part 42 can effectively cover the first connection section 21 of the pole 2, and has insulation protection function, and the second plastic part 42 is connected with the radial outer end of the first plastic part 41, the second plastic part 42 and the first plastic part 41 are integrated, the upper plastic 4 can integrate the insulation effect of the first connection section 21 and the top cover body 1 on the upper plastic 4, and the assembly efficiency of the top cover assembly 10 can be improved.
In some embodiments of the present utility model, as shown in fig. 2, the cap body 1 has a concave portion 12 recessed toward the side of the second connection section 23, the mounting hole 11 penetrates the bottom wall of the concave portion 12, and the first sealing portion 31 is located in the concave portion 12. By providing the concave portion 12, the first sealing portion 31 can be limited, so that the position of the first sealing portion 31 is relatively fixed, the position of the sealing ring 3 is relatively fixed, the risk of shifting the sealing ring 3 is small, the position of the sealing ring 3 is relatively reliable, and the sealing performance of the sealing ring 3 is relatively good.
The battery 100 according to the present utility model is described below.
The battery 100 according to the present utility model, as shown in fig. 1 and 3, includes the above-described top cap assembly 10.
According to the battery 100 of the present utility model, by installing the pole 2 in the installation hole 11 and disposing the seal ring 3 between the pole 2 and the top cap body 1, the seal ring 3 surrounds the pole 2 and includes the first seal portion 31, and the first seal portion 31 is located between the first connection section 21 of the pole 2 and the top cap body 1, the first connection section 21 and the top cap body 1 can be spaced apart for insulation. In addition, the first protrusion 211 on the first connection section 21 is matched with the first groove 311 on the first sealing part 31, so that the sealing area between the first connection section 21 and the first sealing part 31 can be increased, the sealing effect can be improved, and the sealing performance of the first sealing part 31 is improved, thereby improving the sealing performance of the sealing ring 3. At this time, the battery 100 has a good sealing effect, and foreign matters such as external gas or water can be prevented from entering the battery 100, so that the operation reliability of the battery 100 is higher, and the safety of the battery 100 is higher.
In some embodiments of the present utility model, as shown in fig. 3, battery 100 is a cylindrical battery. Of course, the battery 100 may be a square battery, a pentagonal battery, an elliptic cylinder battery, or the like, without being limited to this.
Other constructions and operations of the header assembly 10 according to embodiments of the present utility model are known to those of ordinary skill in the art and will not be described in detail herein.
In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A top cap assembly of a battery, comprising:
the top cover body is provided with a mounting hole penetrating through the top cover body in the thickness direction of the top cover body;
the pole comprises a first connecting section, a fixing section and a second connecting section in sequence along the axial direction of the pole, the cross sectional area of the first connecting section and the second connecting section in the direction vertical to the thickness direction of the top cover body is larger than the cross sectional area of the fixing section in the direction vertical to the thickness direction of the top cover body, the fixing section penetrates through the mounting hole, and the first connecting section and the second connecting section are respectively positioned at two sides of the thickness direction of the top cover body;
the sealing ring surrounds the pole and comprises a first sealing part, the first sealing part is located between the first connecting section and the top cover body, a first groove extending along the circumferential direction of the first sealing part is formed in the surface of the first sealing part, a first protrusion matched with the first groove is formed in the surface of the first connecting section, and the first protrusion extends along the circumferential direction of the first connecting section.
2. The battery top cap assembly of claim 1, wherein the seal ring further comprises:
and one end of the first insulating part is connected with the radial inner end of the first sealing part, and the first insulating part is positioned between the inner wall of the mounting hole and the outer peripheral wall of the fixed section.
3. The battery top cap assembly of claim 2, wherein the seal ring further comprises:
the second sealing part is positioned between the top cover body and the second connecting section, and the radial inner end of the second sealing part is connected with one end, far away from the first sealing part, of the first insulating part.
4. The battery top cap assembly according to claim 3, wherein a second groove extending in a circumferential direction of the second sealing part is provided on a surface of the second sealing part facing the second connection section, and a second protrusion engaged with the second groove is provided on a surface of the second connection section facing the second sealing part, the second protrusion extending in the circumferential direction of the second connection section.
5. The battery top cap assembly of claim 3, wherein the seal ring further comprises:
and the second insulating part is positioned on the radial outer side of the second connecting section, and one end of the second insulating part is connected with the radial outer end of the second sealing part.
6. The top cap assembly of a battery according to claim 1, further comprising:
and the upper plastic comprises a first plastic part, and the first plastic part is positioned between the first connecting section and the top cover body and surrounds the first sealing part.
7. The battery top cap assembly of claim 6, wherein the upper plastic further comprises a second plastic portion connected to a radially outer end of the first plastic portion, the second plastic portion disposed about the first connection section.
8. The battery top cap assembly according to claim 1, wherein the top cap body has a concave portion concave toward the second connection section side, the mounting hole penetrates a bottom wall of the concave portion, and the first sealing portion is located in the concave portion.
9. A battery comprising the top cap assembly of the battery according to any one of claims 1 to 8.
10. The battery of claim 9, wherein the battery is a cylindrical battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320296928.3U CN219717049U (en) | 2023-02-23 | 2023-02-23 | Top cap subassembly and have its battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320296928.3U CN219717049U (en) | 2023-02-23 | 2023-02-23 | Top cap subassembly and have its battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219717049U true CN219717049U (en) | 2023-09-19 |
Family
ID=88005093
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320296928.3U Active CN219717049U (en) | 2023-02-23 | 2023-02-23 | Top cap subassembly and have its battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219717049U (en) |
-
2023
- 2023-02-23 CN CN202320296928.3U patent/CN219717049U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |