CN219419238U - Secondary battery cover plate assembly and secondary battery - Google Patents
Secondary battery cover plate assembly and secondary battery Download PDFInfo
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- CN219419238U CN219419238U CN202223597894.6U CN202223597894U CN219419238U CN 219419238 U CN219419238 U CN 219419238U CN 202223597894 U CN202223597894 U CN 202223597894U CN 219419238 U CN219419238 U CN 219419238U
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- Prior art keywords
- secondary battery
- reinforcement
- pressure relief
- cover plate
- hole
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- 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
Abstract
The utility model belongs to the field of new energy, and in particular relates to a secondary battery cover plate assembly and a secondary battery, wherein the secondary battery cover plate assembly comprises a plate-shaped body, and the plate-shaped body is provided with: a post hole; a liquid injection hole; a pressure relief hole; and a reinforcing portion configured to be capable of improving bending strength of a region of the plate-like body where the reinforcing portion is located, the reinforcing portion being distributed at least in a surrounding region of the pressure relief hole. The strengthening parts are mainly distributed around the pressure relief holes, so that the structural strength around the pressure relief holes can be effectively improved, the problem of sealing failure of a battery caused by deformation of the cover plate is avoided, the strengthening ribs are interwoven into a net structure, the bending strength in any direction around the pressure relief holes can be effectively improved, the stress is effectively dispersed, and the structural strength of the plate surfaces around the pressure relief holes is further improved.
Description
Technical Field
The utility model belongs to the field of new energy, and particularly relates to a secondary battery cover plate assembly and a secondary battery.
Background
The upper cover of square shell battery has generally seted up the pressure release hole, and attached one deck foil on the pressure release hole, and this foil constitutes the explosion-proof valve of battery, and when abnormal phenomena such as deflagration appear in the battery, the explosion-proof valve can be broken through to the inside gas that produces of battery to carry out the pressure release to the battery, avoid appearing the potential safety hazard. However, the upper cover of the battery is generally plastic or a thin metal plate, and the structural strength of the upper cover is limited, and because the battery is generally provided with a certain pretightening force around the battery in an assembled state, the battery can also generate a certain expansion in the normal use process, and therefore, the upper cover of the battery is extremely easy to generate distortion due to the existence of the explosion-proof valve.
Disclosure of Invention
In view of the above-described drawbacks of the prior art, an object of the present utility model is to provide a secondary battery cover plate assembly and a secondary battery capable of improving the strength of a battery upper cover and avoiding deformation of the upper cover.
To achieve the above and other related objects, the present utility model provides a secondary battery cap assembly comprising a plate-shaped body provided with:
a post hole;
a liquid injection hole;
a pressure relief hole; and
and a reinforcing portion configured to be capable of improving bending strength of a region of the plate-like body where the reinforcing portion is located, the reinforcing portion being distributed at least in a surrounding region of the pressure relief hole.
In an alternative embodiment of the utility model, the width of the pressure relief hole in the first direction is greater than 2/5 of the width of the plate-like body in the first direction, the first direction being a direction perpendicular to the length direction of the plate-like body and parallel to the plate surface of the plate-like body.
In an optional embodiment of the present utility model, the reinforcement portion includes first reinforcement units distributed in a surrounding area of the pressure relief hole, the first reinforcement units include first reinforcement ribs and second reinforcement ribs, the first reinforcement ribs are disposed around the pressure relief hole, and the second reinforcement ribs are disposed radially around the pressure relief hole.
In an alternative embodiment of the present utility model, the second reinforcing rib is located in a region surrounded by the first reinforcing rib.
In an alternative embodiment of the present utility model, the first end of the second reinforcing rib is connected to the first reinforcing rib, and the second end of the second reinforcing rib is spaced from the pressure release hole by a distance.
In an alternative embodiment of the utility model, the first reinforcement unit further comprises an annular thickened region disposed along an edge of the pressure relief aperture.
In an alternative embodiment of the utility model, the second end of the second reinforcing rib is connected to the annular thickened region.
In an optional embodiment of the present utility model, the reinforcing portion includes second reinforcing units distributed in a surrounding area of the liquid injection hole, the second reinforcing units include third reinforcing ribs and fourth reinforcing ribs, the third reinforcing ribs are disposed around the liquid injection hole, and the fourth reinforcing ribs are radially disposed around the liquid injection hole.
In an alternative embodiment of the utility model, the reinforcement comprises a third reinforcement unit arranged around the pole bore.
In an alternative embodiment of the present utility model, the first reinforcement unit, the second reinforcement unit, and the third reinforcement unit are integrally connected.
To achieve the above and other related objects, the present utility model also provides a secondary battery including the secondary battery cap assembly.
The utility model has the technical effects that: the area occupied by the pressure relief holes on the cover plate is largest, so that the influence on the strength of the cover plate is also largest, the structural strength of the area around the pressure relief holes is weakest and the pressure relief holes are easy to deform, the reinforcing part is mainly distributed around the pressure relief holes, the structural strength around the pressure relief holes can be effectively improved, the problem of sealing failure of a battery caused by deformation of the cover plate is avoided, the reinforcing ribs are interwoven into a net structure, the bending strength in any direction around the pressure relief holes can be effectively improved, the stress is effectively dispersed, and the structural strength of the plate surface around the pressure relief holes is further improved.
Drawings
Fig. 1 is a perspective view of a secondary battery cap assembly provided by an embodiment of the present utility model;
fig. 2 is a perspective view of another view of a secondary battery cap assembly provided by an embodiment of the present utility model;
fig. 3 is a perspective view of a secondary battery cover plate assembly and its accessories provided by an embodiment of the present utility model;
reference numerals: 10. a plate-like body; 11. a first post hole; 111. a positive electrode post cap; 12. a second post hole; 121. a negative electrode post cap; 13. a liquid injection hole; 14. a pressure relief hole; 141. a blocking member; 15. a first reinforcement unit; 151. a first reinforcing rib; 152. a second reinforcing rib; 153. an annular thickened region; 16. a second reinforcement unit; 161. a third reinforcing rib; 162. fourth reinforcing ribs; 163. seventh reinforcing ribs; 17. fifth reinforcing ribs; 18. sixth reinforcing ribs.
Detailed Description
Other advantages and effects of the present utility model will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present utility model with reference to specific examples. The utility model may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present utility model. It should be noted that the following embodiments and features in the embodiments may be combined with each other without conflict.
It should be noted that the illustrations provided in the following embodiments merely illustrate the basic concept of the present utility model by way of illustration, and only the components related to the present utility model are shown in the illustrations, not according to the number, shape and size of the components in actual implementation, and the form, number and proportion of each component in actual implementation may be arbitrarily changed, and the layout of the components may be more complex.
Referring to fig. 1-3, the secondary battery cover plate assembly and the secondary battery provided by the utility model optimize the cover plate structure, effectively improve the structural strength of the secondary battery cover plate under the condition of not increasing materials, especially improve the structural strength around the pressure relief hole, and understand that the pressure relief hole is the part of the cover plate which is most easy to deform.
Referring to fig. 1-3, a secondary battery cover plate assembly includes a plate-shaped body 10, wherein a post hole is formed in the plate-shaped body 10, in this embodiment, two post holes of a battery are all formed in the same cover plate, that is, a first post hole 11 and a second post hole 12 are formed in the plate-shaped body 10, it should be understood that in other embodiments, two post holes may be formed in two different cover plates, for example, only one post hole is formed in each cover plate; the plate-shaped body 10 is also provided with a liquid injection hole 13, a pressure relief hole 14 and a strengthening part; it will be appreciated that the positive and negative poles of the battery pass through the first and second pole bores 11, 12, respectively, and that there should be a reliable seal between the poles; after the battery is assembled, the first pole hole 11 and the second pole hole 12 may be provided with a positive pole cover 111 and a negative pole cover 121, respectively, so as to protect the poles, and the liquid injection hole 13 is mainly used for injecting electrolyte into the battery during the production or later maintenance of the battery, and after the battery is manufactured or maintained, the liquid injection hole 13 should be ensured to be sealed, for example, a rubber plug may be used for sealing, and a cover plate is installed outside the rubber plug to avoid the falling of the rubber plug.
Referring to fig. 1 and 2, in an embodiment, a layer of plugging member 141 is further applied to the pressure relief hole 14, and the plugging member 141 may be, for example, a metal sheet, so that the plugging member 141 may be made into a structure that is easy to tear, for example, a score is provided on the plugging member 141 for facilitating gas discharge; the reinforcing portion is arranged to increase the bending strength of the plate-like body 10 in the region where the reinforcing portion is located, and the reinforcing portion is distributed at least in the surrounding region of the relief hole 14. It should be understood that the reinforcement part of the utility model is mainly distributed around the pressure relief hole 14, so that the structural strength around the pressure relief hole 14 can be effectively improved, and the problem of sealing failure of the battery caused by deformation of the cover plate can be avoided.
Referring to fig. 1-3, in an embodiment, the reinforcement portion includes first reinforcement units 15 distributed around the pressure relief hole 14, the first reinforcement units 15 include first reinforcement ribs 151 and second reinforcement ribs 152, the first reinforcement ribs 151 are disposed around the pressure relief hole 14, and the second reinforcement ribs 152 are disposed radially around the pressure relief hole 14. Specifically, the first reinforcing ribs 151 are of a rectangular frame structure, the second reinforcing ribs 152 are respectively located at four corners of the first reinforcing ribs 151, and the first reinforcing ribs 151 and the second reinforcing ribs 152 are interwoven into a net structure, so that the bending strength of the pressure relief holes 14 in any direction can be effectively improved; it should be appreciated that in other embodiments, the first stiffener 151 may be replaced with other shapes, for example, the first stiffener 151 may be circular or other regular polygon.
Referring to fig. 1-3, in an embodiment, the second reinforcing rib 152 is located in an area surrounded by the first reinforcing rib 151; the first end of the second reinforcing rib 152 is connected with the first reinforcing rib 151, and the second end of the second reinforcing rib is spaced from the pressure release hole 14 by a distance; the first reinforcement unit 15 further includes an annular thickened region 153 disposed along the edge of the pressure relief hole 14; the second end of the second reinforcing rib 152 is connected to the annular thickened region 153. It should be appreciated that the annular thickened area 153 can strengthen the edge of the vent hole, and the annular thickened area 153 is connected with the first reinforcing rib 151 into a whole through the second reinforcing rib 152, so that the stress can be effectively dispersed, and the structural strength of the plate surface around the pressure relief hole 14 can be further improved.
Referring to fig. 1-3, in a specific embodiment, the reinforcing portion includes second reinforcing units 16 distributed in a surrounding area of the liquid injection hole 13, the second reinforcing units 16 include third reinforcing ribs 161 and fourth reinforcing ribs 162, the third reinforcing ribs 161 are disposed around the liquid injection hole 13, the fourth reinforcing ribs 162 are radially disposed around the liquid injection hole 13, an annular seventh reinforcing rib 163 is further disposed inside the third reinforcing ribs 161, and the seventh reinforcing rib 163 is integrally connected with the third reinforcing ribs 161 through the fourth reinforcing ribs 162, so as to effectively disperse stress around the liquid injection hole 13.
Referring to fig. 1-3, in one embodiment, the reinforcement portion includes a third reinforcement unit disposed around the pole hole, and in particular, the third reinforcement unit includes a fifth reinforcement rib 17 disposed around the first pole hole 11, and a sixth reinforcement rib 18 disposed around the second pole hole 12; the first reinforcing rib 151, the third reinforcing rib 161, the fifth reinforcing rib 17 and the sixth reinforcing rib 18 are integrally connected. In this embodiment, the reinforcing ribs are integrally connected to each other and cover most of the area of the plate-shaped body 10, so that local stress can be effectively dispersed to each area of the plate-shaped body 10; in a specific embodiment, each stiffener is integrally formed with the plate-like body 10.
Based on the secondary battery cover plate assembly, the utility model further provides a secondary battery, and the secondary battery cover plate assembly comprises the secondary battery cover plate assembly.
In summary, the reinforcement part of the present utility model is mainly distributed around the pressure relief hole 14, so that the structural strength around the pressure relief hole 14 can be effectively improved, the problem of sealing failure of the battery caused by deformation of the cover plate is avoided, each reinforcement rib is interwoven into a mesh structure, the bending strength in any direction around the pressure relief hole 14 can be effectively improved, the stress is effectively dispersed, and the structural strength of the plate surface around the pressure relief hole 14 is further improved.
The above embodiments are merely illustrative of the principles of the present utility model and its effectiveness, and are not intended to limit the utility model. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the utility model. Accordingly, it is intended that all equivalent modifications and variations of the utility model be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.
In the description herein, numerous specific details are provided, such as examples of components and/or methods, to provide a thorough understanding of embodiments of the utility model. One skilled in the relevant art will recognize, however, that an embodiment of the utility model can be practiced without one or more of the specific details, or with other apparatus, systems, components, methods, components, materials, parts, and so forth. In other instances, well-known structures, materials, or operations are not specifically shown or described in detail to avoid obscuring aspects of embodiments of the utility model.
Reference throughout this specification to "one embodiment," "an embodiment," or "a particular embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment, and not necessarily all embodiments, of the present utility model. Thus, the appearances of the phrases "in one embodiment," "in an embodiment," or "in a specific embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics of any specific embodiment of the present utility model may be combined in any suitable manner with one or more other embodiments. It will be appreciated that other variations and modifications of the embodiments of the utility model described and illustrated herein are possible in light of the teachings herein and are to be considered as part of the spirit and scope of the utility model.
It will also be appreciated that one or more of the elements shown in the figures may also be implemented in a more separated or integrated manner, or even removed because of inoperability in certain circumstances or provided because it may be useful depending on the particular application.
In addition, any labeled arrows in the drawings/figures should be considered only as exemplary, and not limiting, unless otherwise specifically indicated. Furthermore, the term "or" as used herein is generally intended to mean "and/or" unless specified otherwise. Combinations of parts or steps will also be considered as being noted where terminology is foreseen as rendering the ability to separate or combine is unclear.
As used in the description herein and throughout the claims that follow, unless otherwise indicated, "a", "an", and "the" include plural references. Also, as used in the description herein and throughout the claims that follow, unless otherwise indicated, the meaning of "in …" includes "in …" and "on …".
The above description of illustrated embodiments of the utility model, including what is described in the abstract, is not intended to be exhaustive or to limit the utility model to the precise forms disclosed herein. Although specific embodiments of, and examples for, the utility model are described herein for illustrative purposes only, various equivalent modifications are possible within the spirit and scope of the present utility model, as those skilled in the relevant art will recognize and appreciate. As noted, these modifications can be made to the present utility model in light of the foregoing description of illustrated embodiments of the present utility model and are to be included within the spirit and scope of the present utility model.
The systems and methods have been described herein in general terms as being helpful in understanding the details of the present utility model. Furthermore, various specific details have been set forth in order to provide a thorough understanding of embodiments of the utility model. One skilled in the relevant art will recognize, however, that an embodiment of the utility model can be practiced without one or more of the specific details, or with other apparatus, systems, assemblies, methods, components, materials, parts, and/or the like. In other instances, well-known structures, materials, and/or operations are not specifically shown or described in detail to avoid obscuring aspects of embodiments of the utility model.
Thus, although the utility model has been described herein with reference to particular embodiments thereof, a latitude of modification, various changes and substitutions are intended in the foregoing disclosures, and it will be appreciated that in some instances some features of the utility model will be employed without a corresponding use of other features without departing from the scope and spirit of the utility model as set forth. Therefore, many modifications may be made to adapt a particular situation or material to the essential scope and spirit of the present utility model. It is intended that the utility model not be limited to the particular terms used in following claims and/or to the particular embodiment disclosed as the best mode contemplated for carrying out this utility model, but that the utility model will include any and all embodiments and equivalents falling within the scope of the appended claims. Accordingly, the scope of the utility model should be determined only by the following claims.
Claims (11)
1. A secondary battery cover plate assembly, comprising a plate-shaped body provided with:
a post hole;
a liquid injection hole;
a pressure relief hole; and
and a reinforcing portion configured to be capable of improving bending strength of a region of the plate-like body where the reinforcing portion is located, the reinforcing portion being distributed at least in a surrounding region of the pressure relief hole.
2. The secondary battery cover plate assembly according to claim 1, wherein the width of the pressure release hole in a first direction is greater than 2/5 of the width of the plate-shaped body in the first direction, the first direction being a direction perpendicular to a length direction of the plate-shaped body and parallel to a plate surface of the plate-shaped body.
3. The secondary battery cover plate assembly according to claim 1, wherein the reinforcement portion includes first reinforcement units distributed in a surrounding area of the pressure relief hole, the first reinforcement units including first reinforcement ribs and second reinforcement ribs, the first reinforcement ribs being disposed around the pressure relief hole, the second reinforcement ribs being disposed radially centering around the pressure relief hole.
4. The secondary battery cover plate assembly according to claim 3, wherein the second reinforcing rib is located in a region surrounded by the first reinforcing rib.
5. The secondary battery cover plate assembly according to claim 3, wherein the first end of the second reinforcing rib is connected to the first reinforcing rib, and the second end of the second reinforcing rib is spaced apart from the pressure release hole.
6. The secondary battery cover plate assembly of claim 5, wherein the first reinforcement unit further comprises an annular thickened region disposed along an edge of the pressure relief vent.
7. The secondary battery cover plate assembly of claim 6, wherein the second end of the second reinforcing bead is connected to the annular thickened region.
8. The secondary battery cap assembly of claim 3, wherein the reinforcement part comprises second reinforcement units distributed in a surrounding area of the liquid injection hole, the second reinforcement units comprise third reinforcement ribs and fourth reinforcement ribs, the third reinforcement ribs are arranged around the liquid injection hole, and the fourth reinforcement ribs are arranged radially centering around the liquid injection hole.
9. The secondary battery cap plate assembly of claim 8, wherein the reinforcement portion includes a third reinforcement unit disposed around the post hole.
10. The secondary battery cover plate assembly according to claim 9, wherein the first reinforcement unit, the second reinforcement unit, and the third reinforcement unit are integrally connected.
11. A secondary battery comprising the secondary battery cap assembly according to any one of claims 1 to 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223597894.6U CN219419238U (en) | 2022-12-29 | 2022-12-29 | Secondary battery cover plate assembly and secondary battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223597894.6U CN219419238U (en) | 2022-12-29 | 2022-12-29 | Secondary battery cover plate assembly and secondary battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219419238U true CN219419238U (en) | 2023-07-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223597894.6U Active CN219419238U (en) | 2022-12-29 | 2022-12-29 | Secondary battery cover plate assembly and secondary battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219419238U (en) |
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2022
- 2022-12-29 CN CN202223597894.6U patent/CN219419238U/en active Active
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