CN214099734U - Top cover assembly and secondary battery - Google Patents
Top cover assembly and secondary battery Download PDFInfo
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- CN214099734U CN214099734U CN202022900327.8U CN202022900327U CN214099734U CN 214099734 U CN214099734 U CN 214099734U CN 202022900327 U CN202022900327 U CN 202022900327U CN 214099734 U CN214099734 U CN 214099734U
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- 230000006978 adaptation Effects 0.000 claims abstract description 6
- 238000007789 sealing Methods 0.000 claims description 22
- 230000009471 action Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 238000001746 injection moulding Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000002708 enhancing effect Effects 0.000 description 3
- 230000001965 increasing effect Effects 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/147—Lids or covers
- H01M50/148—Lids or covers characterised by their shape
- H01M50/15—Lids or covers characterised by their shape for prismatic or rectangular cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/543—Terminals
- H01M50/545—Terminals formed by the casing of the cells
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The application provides a top cap subassembly and secondary cell, the top cap subassembly includes: the cover plate is provided with a pole column hole; the annular convex part is arranged around the outer side edge of the pole column hole and is integrally formed with the cover plate; the polar column is positioned on the inner side of the annular convex part; the annular fixing piece, the annular fixing piece be equipped with the first holding tank of annular convex part looks adaptation, the inboard border butt of annular fixing piece in the border of utmost point post, the annular convex part is arranged in the first holding tank. This application improves assembly efficiency through with annular convex part and the reducible equipment part of apron integrated into one piece, and through inciting somebody to action the inboard border butt of annular mounting in the border of utmost point post, the annular convex part is arranged in the first holding tank, make annular mounting can install on the apron fast to compress tightly fixedly with the border of utmost point post, in order to improve assembly efficiency.
Description
Technical Field
The application relates to the technical field of energy storage devices, in particular to a top cover assembly and a secondary battery.
Background
As more and more driving power sources for electric vehicles and new energy vehicles are developed to have high capacity and high safety, secondary batteries are widely used in electric vehicles and new energy vehicles due to their excellent characteristics such as high capacity.
The top cover assembly of the secondary battery is used as an important component of the secondary battery, and during assembly, the problem caused by poor welding due to the welding process can be well avoided by fixing the pole on the top cover by adopting the riveting process, so that the top cover assembly is widely adopted in the assembly process of the secondary battery.
However, when the battery top cap is riveted, the inner ring body, the outer ring body and other structures are generally required to be arranged on the pole, the structure is complex, and positioning is also required during riveting, so that the assembly process is complex, and the assembly efficiency is not high.
Disclosure of Invention
The embodiment of the application provides a top cover assembly and a secondary battery to solve the problem that the existing top cover assembly is not high in assembly efficiency.
In one aspect, the present application provides a header assembly comprising:
the cover plate is provided with a pole column hole;
the annular convex part is arranged around the outer side edge of the pole column hole and is integrally formed with the cover plate;
the polar column is positioned on the inner side of the annular convex part;
the annular fixing piece, the annular fixing piece be equipped with the first holding tank of annular convex part looks adaptation, the inboard border butt of annular fixing piece in the border of utmost point post, the annular convex part is arranged in the first holding tank.
In this application, be equipped with joint portion in the first holding tank, the annular convex part is equipped with block portion, joint portion with block portion looks adaptation is connected.
In one possible implementation of the present application, the engaging portion includes at least one of a through hole or a groove.
In one possible implementation manner of the present application, when the engaging portion is a groove, the engaging portion is a trapezoidal groove.
In a possible implementation manner of the present application, the top cap assembly further includes a sealing ring, the sealing ring is disposed on the inner side of the annular convex portion, and the pole abuts against the sealing ring.
In this application a possible implementation, the outside border in utmost point post hole is equipped with the card portion of holding, the one end of sealing washer is equipped with trip portion, trip portion with the card portion looks adaptation of holding is connected, the other end of sealing washer is arranged in the utmost point post is downthehole.
In this application a possible implementation, the side of utmost point post is equipped with the ladder portion, the inboard of annular mounting is equipped with the second holding tank, the second holding tank with ladder portion looks adaptation is connected.
In a possible implementation manner of the present application, one of the step portion and the annular fixing member is provided with a limiting portion, and the other one of the step portion and the annular fixing member is provided with an accommodating portion, and the limiting portion is connected with the accommodating portion in a fitting manner.
In a possible implementation of the present application, the vertical projection of the step is located outside the vertical projection of the sealing ring.
In a possible implementation manner of the present application, the annular fixing member is an injection molding member, and/or the pole is a metal member, the cover plate is a metal member, and the sealing ring is made of rubber.
In this application a possible implementation, be equipped with the third holding tank on the apron, the utmost point post hole is located the diapire of third holding tank, the annular convex part encloses to be located the outside border of third holding tank, annular mounting part is arranged in the third holding tank.
In another aspect, the present application also provides a secondary battery including the cap assembly described above.
The application provides a pair of top cap subassembly and secondary battery improves assembly efficiency through with annular convex part and the reducible equipment part of apron integrated into one piece, and through inciting somebody to action the inboard border butt of annular mounting in the border of utmost point post, the annular convex part is arranged in the first holding tank, make annular mounting can install on the apron fast to compress tightly fixedly with the border of utmost point post, in order to improve assembly efficiency.
Drawings
The technical solution and other advantages of the present application will become apparent from the detailed description of the embodiments of the present application with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a top cover assembly provided in an embodiment of the present application.
Fig. 2 is an exploded schematic view of a top cover assembly according to an embodiment of the present application.
Fig. 3 is a schematic cross-sectional structure diagram of a cap assembly according to an embodiment of the present application.
Fig. 4 is an enlarged schematic view of a portion a of fig. 3.
Fig. 5 is a schematic structural diagram of an embodiment of the cover plate and the annular protrusion of fig. 1.
Fig. 6 is a schematic structural view of another embodiment of the cover plate and the annular protrusion of fig. 1.
Fig. 7 is an exploded schematic view of a secondary battery according to an embodiment of the present disclosure.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it is to 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," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.
Referring to fig. 1 to 3, a cap assembly according to an embodiment of the present invention includes a cap plate 10, an annular protrusion 20, a post 30, and an annular fixing element 40.
The cover plate 10 is provided with a pole column hole 11; the annular convex part 20 is arranged around the outer side edge of the pole column hole 11 and is integrally formed with the cover plate 10. The pole 30 is positioned inside the annular projection 20; the annular fixing member 40 is provided with a first accommodating groove 41 matched with the annular convex part 20, the inner side edge of the annular fixing member 40 abuts against the edge of the pole 30, and the annular convex part 20 is arranged in the first accommodating groove 41. The pole 30 is a metal member, and the cover plate 10 may be a metal member.
This application embodiment improves assembly efficiency through with the reducible equipment part of annular convex part 20 with apron 10 integrated into one piece, and through inciting somebody to action the inboard border butt of annular fixed part 40 in utmost point post 30's border, annular convex part 20 is arranged in the first holding tank 41, make annular fixed part 40 install fast on apron 10 to compress tightly fixedly with utmost point post 30's border, with improvement assembly efficiency.
Wherein, the annular protrusion 20 can be in clearance fit or transition fit with the first receiving groove 41. Further, the ring fixing member 40 may be an injection molded member, so that the ring fixing member 40 can be quickly assembled to the cover plate 10 without separately processing the ring fixing member 40, thereby reducing the processing cost, improving the processing efficiency, and enhancing the sealing performance of the connection between the ring fixing member 40 and the cover plate 10, the ring-shaped protrusion 20, and the pole 30. During the injection molding process, a portion of the plastic fills the engaging portion 21 of the annular protrusion 20, and the plastic entering the engaging portion 21 is solidified to form the engaging portion 42. Thus, the annular protrusion 20 and the annular fixing member 40 form a whole, and the annular protrusion 20 and the annular fixing member 40 have high connection strength and good connection stability, thereby enhancing the stability of the pole 30 on the cover plate 10.
In some embodiments, a clamping portion 42 is disposed in the first receiving groove 41, the annular protrusion 20 is provided with a clamping portion 21, and the clamping portion 42 is fittingly connected with the clamping portion 21, so that the annular fixing member 40 can be more tightly connected with the annular protrusion 20. Specifically, the engaging portion 21 may be a through hole or a groove. As shown in fig. 2, the through hole 211 penetrates through the sidewall of the annular protrusion 20, for example, a portion of plastic may fill the through hole 211 by injection molding, so that the annular protrusion 20 and the annular fixing member 40 form a whole, and the through hole may play a role of well engaging with the annular fixing member 40, thereby further enhancing the stability of the pole 30 on the cover plate 10.
The engaging portion 21 may be a groove 212, which may be provided at an end of the annular protrusion 20, as shown in fig. 5, specifically, an opening of the groove is disposed toward a bottom wall of the annular fixing member 40; the groove 212 may also be a U-shaped groove or a groove with a narrow top and a wide bottom, such as a regular trapezoid groove, and the regular trapezoid groove has a groove structure with a narrow top and a wide bottom, so that the annular fixing member 40 is better fixed on the annular protrusion 20 without falling off easily, and the stability of the annular fixing member 40 can be better increased. Further, the opening depth of the groove may be set as needed, the deeper the opening depth of the groove, the larger the contact area of the ring fixture 40 with the engaging part 21, and when the ring fixture 40 is formed by injection molding, the larger the adhesive force between the ring fixture 40 and the engaging part 21 is, thereby increasing the degree of stability of the ring fixture 40, and when the depth of the groove is the same as the height of the annular protrusion 20, the groove may divide the engaging part 21 into a plurality of separate parts.
The groove 212 may also be disposed on the sidewall of the annular protrusion 20, as shown in fig. 6, wherein the groove may be disposed on the outer sidewall or the inner sidewall of the annular protrusion 20, specifically, the opening of the groove is disposed toward the outer sidewall of the annular protrusion 20, or the opening of the groove is disposed toward the inner sidewall of the annular protrusion 20.
The number of the engaging portions 21 may be plural, so that the ring fastener 40 can be more tightly coupled with the ring protrusion 20. For example, 2 or 4, etc. When there are a plurality of the engaging portions 21, the plurality of the engaging portions 21 are at least one of through holes or grooves, for example, the plurality of the engaging portions 21 may be all through holes or all grooves, or the plurality of engaging portions may also be composed of 2 through holes and 2 grooves, and the like, and is not limited specifically herein. Correspondingly, the clamping portion 42 can be a protrusion adapted to the engaging portion, and the shape of the engaging portion is not limited herein since the structure and shape of the engaging portion 21 can be various.
In some embodiments, the cap assembly further comprises a sealing ring 50, the sealing ring 50 is disposed inside the annular protrusion 20, and the pole 30 abuts against the sealing ring 50. The sealing ring 50 may be made of rubber, and the sealing ring 50 can enhance the sealing performance between the pole 30 and the cover plate 10, prevent water and prolong the service life of the pole.
In some embodiments, a retaining portion 111 is disposed at an outer edge of the pole column hole 11, a hook portion 51 is disposed at one end of the sealing ring 50, the hook portion 51 is fittingly connected to the retaining portion 111, and the other end of the sealing ring 50 is disposed in the pole column hole 11. The clamping portion 111 and the clamping hook portion 51 can be tightly buckled with each other, so that the sealing performance is further enhanced, and the service life of the pole 30 is prolonged.
In some embodiments, the side surface of the pole 30 is provided with a step portion 31, and the inner side of the annular fixing member 40 is provided with a second receiving groove 43, and the second receiving groove 43 is fittingly connected with the step portion 31. The annular fixing member 40 can tightly abut against the edge of the pole 30 through the step portion 31, so that the pole 30 is more stably installed and is not easy to fall off.
In some embodiments, one of the step portion 31 and the ring-shaped fixing member 40 is provided with a position-limiting portion (not shown), and the other is provided with a receiving portion 311, and the position-limiting portion is fittingly connected with the receiving portion 311. The limiting portion is a protrusion, the accommodating portion 311 can be a hole or a notch, and the limiting portion is arranged in the accommodating portion 311, so that torsion of the pole 30 can be prevented from being increased, and the pole 30 is more stable.
In some embodiments, the vertical projection of the step 31 is located outside the vertical projection of the sealing ring 50. Therefore, a gap is formed between the step portion 31 and the cover plate 10, so that the edge of the terminal 30 is completely placed in the second receiving groove 43 of the annular fixing member 40, and the annular fixing member 40 can fix the terminal 30 more tightly.
In some embodiments, as shown in fig. 4, the cover plate 10 is provided with a third receiving groove 12, the pole hole 11 is located at a bottom wall of the third receiving groove 12, the annular protrusion 20 is enclosed at an outer edge of the third receiving groove 12, and the annular fixing element 40 is partially disposed in the third receiving groove 12. The annular projection 20 and the third receiving groove 12 are easily press-formed, and the portion of the pole 30 protruding from the cover plate 10 is made smaller, so that the overall structure is more compact.
The present application further provides a secondary battery 200, as shown in fig. 7, where the secondary battery 200 includes a cap assembly 100, a casing 200, and a battery cell (not shown), the cap assembly 100 covers the casing, and the battery cell is disposed in the casing 200. The top cap assembly is the top cap assembly 100, and the secondary battery 200 has all the advantages of the top cap assembly 100 by using the top cap assembly 100, which will not be described herein again. In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
The foregoing detailed description is directed to a cap assembly and a secondary battery provided in the embodiments of the present application, and the principles and embodiments of the present application are described herein by using specific examples, and the description of the foregoing embodiments is only used to help understanding the technical solutions and their core ideas of the present application; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure as defined by the appended claims.
Claims (11)
1. A header assembly, comprising:
the cover plate is provided with a pole column hole;
the annular convex part is arranged around the outer side edge of the pole column hole and is integrally formed with the cover plate;
the polar column is positioned on the inner side of the annular convex part;
the annular fixing piece, the annular fixing piece be equipped with the first holding tank of annular convex part looks adaptation, the inboard border butt of annular fixing piece in the border of utmost point post, the annular convex part is arranged in the first holding tank.
2. The top cover assembly according to claim 1, wherein a clamping portion is disposed in the first receiving groove, and a clamping portion is disposed on the annular protrusion, and the clamping portion is connected to the clamping portion.
3. The header assembly of claim 2, wherein the snap fit portion comprises at least one of a through hole or a groove.
4. The header assembly of claim 3, wherein when the engaging portion is a groove, the engaging portion is a trapezoidal groove.
5. The cap assembly of claim 1, further comprising a sealing ring disposed inside the annular protrusion, wherein the post abuts against the sealing ring.
6. The top cover assembly as claimed in claim 5, wherein a clamping portion is disposed at an outer edge of the pole hole, a clamping portion is disposed at one end of the sealing ring, the clamping portion is connected with the clamping portion in a matching manner, and the other end of the sealing ring is disposed in the pole hole.
7. The top cap assembly of claim 6, wherein the side surface of the pole post is provided with a step portion, and the inner side of the annular fixing member is provided with a second receiving groove, and the second receiving groove is fittingly connected with the step portion.
8. The cap assembly of claim 7, wherein one of the step portion and the annular securing member is provided with a retaining portion, and the other is provided with a receiving portion, the retaining portion being adapted to be coupled to the receiving portion.
9. The cap assembly of claim 7, wherein a vertical projection of the step is located outside of a vertical projection of the gasket.
10. The cap assembly of any one of claims 1-9, wherein the cover plate defines a third receiving groove, the post hole is located in a bottom wall of the third receiving groove, the annular protrusion is disposed around an outer edge of the third receiving groove, and the annular securing member is partially disposed in the third receiving groove.
11. A secondary battery comprising the cap assembly according to any one of claims 1 to 10.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022900327.8U CN214099734U (en) | 2020-12-04 | 2020-12-04 | Top cover assembly and secondary battery |
| PCT/CN2021/091771 WO2022116475A1 (en) | 2020-12-04 | 2021-04-30 | Top cover assembly and secondary battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022900327.8U CN214099734U (en) | 2020-12-04 | 2020-12-04 | Top cover assembly and secondary battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214099734U true CN214099734U (en) | 2021-08-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022900327.8U Active CN214099734U (en) | 2020-12-04 | 2020-12-04 | Top cover assembly and secondary battery |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN214099734U (en) |
| WO (1) | WO2022116475A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024012478A1 (en) * | 2022-07-14 | 2024-01-18 | 厦门海辰储能科技股份有限公司 | Cover plate, top cover, battery cell and battery module |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108039428A (en) * | 2018-01-11 | 2018-05-15 | 深圳市科达利实业股份有限公司 | A kind of cell sealing-structure and battery |
| CN208173638U (en) * | 2018-03-21 | 2018-11-30 | 深圳市瑞德丰精密制造有限公司 | A kind of cover board of Anti-fall pole |
| CN208315619U (en) * | 2018-04-23 | 2019-01-01 | 深圳市瑞德丰精密制造有限公司 | A kind of riveting battery cap of Anti-fall |
| CN211428205U (en) * | 2019-12-04 | 2020-09-04 | 武汉富航精密工业有限公司 | Novel simple structure of lithium battery cover plate |
| CN212967855U (en) * | 2020-10-13 | 2021-04-13 | 厦门海辰新能源科技有限公司 | Secondary cell's continuous type utmost point post assembly structure |
| CN212991173U (en) * | 2020-10-13 | 2021-04-16 | 厦门海辰新能源科技有限公司 | Independent pole assembling structure of secondary battery |
-
2020
- 2020-12-04 CN CN202022900327.8U patent/CN214099734U/en active Active
-
2021
- 2021-04-30 WO PCT/CN2021/091771 patent/WO2022116475A1/en active Application Filing
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024012478A1 (en) * | 2022-07-14 | 2024-01-18 | 厦门海辰储能科技股份有限公司 | Cover plate, top cover, battery cell and battery module |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022116475A1 (en) | 2022-06-09 |
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