CN216773369U - Battery cover plate, battery and battery pack - Google Patents
Battery cover plate, battery and battery pack Download PDFInfo
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- CN216773369U CN216773369U CN202220388421.6U CN202220388421U CN216773369U CN 216773369 U CN216773369 U CN 216773369U CN 202220388421 U CN202220388421 U CN 202220388421U CN 216773369 U CN216773369 U CN 216773369U
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- plate body
- battery cover
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Abstract
The utility model relates to the technical field of batteries, and provides a battery cover plate, a battery and a battery pack. The battery cover plate includes: a first plate body; the second plate body is arranged on the periphery of the first plate body; wherein, the maximum thickness value of the first plate body is smaller than the minimum thickness value of the second plate body. The battery cover plate comprises a first plate body and a second plate body, and the second plate body is arranged at the periphery of the first plate body, so that the second plate body can be connected with a shell body of a battery, the maximum thickness value of the first plate body is smaller than the minimum thickness value of the second plate body, namely, the thickness of the second plate body is relatively large, so that the assembly pressure of the battery can be borne, the second plate body is convenient to be connected with the shell body, the thickness of the first plate body is relatively small, the battery cover plate can be used for explosion prevention and other effects, and the performance of the battery cover plate is improved.
Description
Technical Field
The utility model relates to the technical field of batteries, in particular to a battery cover plate, a battery and a battery pack.
Background
In the related art, the battery case may include a cover plate and a case member, the cover plate and the case member are connected by welding, the cover plate and the case member are relatively difficult to weld due to structural limitations of the cover plate, and the cover plate is used only as a sealing member.
SUMMERY OF THE UTILITY MODEL
The utility model provides a battery cover plate, a battery and a battery pack, which are used for improving the performance of the battery cover plate.
According to a first aspect of the present invention, there is provided a battery cover plate comprising:
a first plate body;
the second plate body is arranged on the periphery of the first plate body;
wherein, the maximum thickness value of the first plate body is smaller than the minimum thickness value of the second plate body.
The battery cover plate comprises the first plate body and the second plate body, and the second plate body is arranged on the periphery of the first plate body, so that the second plate body can be used for being connected with the shell part of the battery, the maximum thickness value of the first plate body is smaller than the minimum thickness value of the second plate body, namely the thickness of the second plate body is relatively large, so that the assembly pressure of the battery can be borne, the connection between the second plate body and the shell part is convenient, the thickness of the first plate body is relatively small, the battery cover plate can be used for explosion prevention and the like, and the performance of the battery cover plate is improved.
According to a second aspect of the present invention, there is provided a battery comprising the above battery cover plate.
The battery comprises the battery cover plate, the battery cover plate comprises a first plate body and a second plate body, and the second plate body is arranged on the periphery of the first plate body, so that the second plate body can be connected with the shell body of the battery.
According to a third aspect of the present invention, there is provided a battery pack comprising the battery described above.
The battery pack comprises a battery, a battery cover plate of the battery comprises a first plate body and a second plate body, and the second plate body is arranged on the periphery of the first plate body, so that the second plate body can be connected with a shell body of the battery.
Drawings
For a better understanding of the present disclosure, reference may be made to the embodiments illustrated in the following drawings. The components in the drawings are not necessarily to scale, and related elements may be omitted in order to emphasize and clearly illustrate the technical features of the present disclosure. In addition, the relevant elements or components may be arranged differently as is known in the art. Further, in the drawings, like reference characters designate the same or similar parts throughout the several views. Wherein:
FIG. 1 is a schematic diagram of a battery shown in accordance with an exemplary embodiment;
FIG. 2 is a schematic diagram illustrating a partial cross-sectional configuration of a battery according to an exemplary embodiment;
FIG. 3 is a schematic diagram illustrating the construction of a battery cover plate for a battery according to one exemplary embodiment;
fig. 4 is a schematic cross-sectional view illustrating a battery cap plate of a battery according to an exemplary embodiment.
The reference numerals are explained below:
1. a battery cover plate; 10. a first plate body; 20. a second plate body; 21. a first plate section; 22. a second plate section; 23. recessing; 30. a housing member; 40. a seal member; 50. an electric core; 60. a collector plate.
Detailed Description
The technical solutions in the exemplary embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the exemplary embodiments of the present disclosure. The example embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the present disclosure, and it is, therefore, to be understood that various modifications and changes may be made to the example embodiments without departing from the scope of the present disclosure.
In the description of the present disclosure, unless otherwise explicitly specified or limited, the terms "first", "second", and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more; the term "and/or" includes any and all combinations of one or more of the associated listed items. In particular, reference to "the" object or "an" object is also intended to mean one of many such objects possible.
The terms "connected," "secured," and the like are to be construed broadly and unless otherwise stated or indicated, and for example, "connected" may be a fixed connection, a removable connection, an integral connection, an electrical connection, or a signal connection; "connected" may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present disclosure can be understood by those skilled in the art as the case may be.
Further, in the description of the present disclosure, it is to be understood that the directional words "upper", "lower", "inner", "outer", etc., which are described in the exemplary embodiments of the present disclosure, are described at the angles shown in the drawings, and should not be construed as limiting the exemplary embodiments of the present disclosure. It will also be understood that, in this context, when an element or feature is referred to as being "on", "under", or "inner", "outer" with respect to another element(s), it can be directly on "," under ", or" inner "," outer "with respect to the other element(s), or indirectly on", "under", or "inner", "outer" with respect to the other element(s) via intervening elements.
Referring to fig. 1 to 4, an embodiment of the present invention provides a battery cover plate, including: a first plate body 10; a second plate body 20, the second plate body 20 being disposed at an outer periphery of the first plate body 10; wherein the maximum thickness value of the first plate body 10 is smaller than the minimum thickness value of the second plate body 20.
The battery cover plate according to an embodiment of the present invention includes a first plate 10 and a second plate 20, and the second plate 20 is disposed at the periphery of the first plate 10, so that the second plate 20 can be used for connecting with a housing member of a battery, and since the maximum thickness of the first plate 10 is smaller than the minimum thickness of the second plate 20, that is, the thickness of the second plate 20 is relatively large, the battery cover plate can bear the assembly pressure of the battery, thereby facilitating the connection between the second plate 20 and the housing member, and the thickness of the first plate 10 is relatively small, so that the battery cover plate can be used for explosion protection and the like, thereby improving the performance of the battery cover plate.
It should be noted that the second plate 20 is disposed at the periphery of the first plate 10, that is, the second plate 20 is disposed around the periphery of the first plate 10, so that when the battery cover is connected to the housing member of the battery, the housing member is connected to the second plate 20, and the second plate 20 serves as a load-bearing member to prevent the battery cover from deforming during the assembly process.
And because the first plate body 10 can not bear the assembly force, the thickness of the first plate body 10 can be relatively smaller, not only can reduce the weight of the battery cover plate, but also the first plate body 10 can be used as an explosion-proof structure of the battery, so that when the internal pressure of the battery is too high, at least part of the first plate body 10 can be separated from the second plate body 20 to be used for the pressure relief of the battery, and the safety performance of the battery is ensured. Alternatively, at least a portion of the first plate body 10 can be disposed apart from the second plate body 20 for heat dissipation of the battery when the internal temperature of the battery is excessively high.
In some embodiments, the first plate 10 may have an equal thickness structure, and the second plate 20 may also have an equal thickness structure, which is not only simple in structure, but also facilitates the molding of the first plate 10 and the second plate 20.
In some embodiments, it is not excluded that the first plate 10 may be a variable thickness structure, and the second plate 20 may also be a variable thickness structure, so as to adjust the thickness according to the structural requirement, thereby meeting the use requirement.
In one embodiment, the first plate 10 and the second plate 20 are integrally formed, which not only improves the forming efficiency of the battery cover plate, but also is simple to manufacture, and can ensure the structural strength of the battery cover plate.
In one embodiment, as shown in fig. 4, the second panel body 20 comprises a first panel section 21 and a second panel section 22, and the first panel section 21 is at least partially arranged in coincidence with the second panel section 22 in a projection along a plane in which the second panel section 22 is located, so that it is ensured that the minimum thickness value of the second panel body 20 is greater than the maximum thickness value of the first panel body 10.
The first plate section 21 is at least partially overlapped with the second plate section 22 along the plane projection of the second plate section 22, that is, the first plate section 21 and the second plate section 22 may be disposed in parallel, or the first plate section 21 and the second plate section 22 may be disposed in non-parallel, and the first plate section 21 and the second plate section 22 are substantially disposed in an up-down manner.
Further, the first plate 21 and the second plate 22 of the second plate 20 may be stacked, that is, the first plate 21 is located at one side of the second plate 22, there may be no gap between the first plate 21 and the second plate 22, that is, the first plate 21 and the second plate 22 are of a unitary structure, and the stacked structure of the first plate 21 and the second plate 22 is formed in one step, for example, by machining the first plate 10 and the second plate 20, similarly forming a groove between the first plate 10 and the second plate 20, specifically, a plate may be provided, and material is removed at the middle portion of the plate, so as to form the first plate 10 and the second plate 20, and the maximum thickness value of the first plate 10 is smaller than the minimum thickness value of the second plate 20.
In one embodiment, as shown in fig. 3 and 4, the first plate body 10 is a plate body with an equal thickness, and at least a portion of the second plate body 20 has a thickness value 2 times that of the first plate body 10; the first plate 10 and the second plate 20 are bent to form the first plate 21 and the second plate 22, which are stacked, that is, the first plate 10 and the second plate 20 can be formed by bending a plate structure, so that the forming efficiency of the structure is improved, and the structural strength can be ensured.
For example, a plate body is provided, the circumferentially outer structure of which is bent so as to form a first plate section 21 and a second plate section 22 which are stacked, i.e. to form the first plate body 10 and the second plate body 20, and the thickness value of at least a portion of the second plate body 20 may be 2 times the thickness value of the first plate body 10.
In one embodiment, the first plate 10 and the second plate 20 are formed as separate bodies, and the first plate 10 and the second plate 20 are fixedly connected to each other, so as to ensure structural stability, and the first plate 10 and the second plate 20 can be designed according to structural requirements, thereby meeting different requirements.
The first plate body 10 and the second plate body 20 may be welded, or the first plate body 10 and the second plate body 20 may be clamped, or the first plate body 10 and the second plate body 20 may be bonded.
In some embodiments, the second plate body 20 may be attached to the circumferential outer edge of the first plate body 10 such that the second plate body 20 is disposed around the outer periphery of the first plate body 10.
In some embodiments, the second plate 20 and the first plate 10 may be stacked, that is, the second plate 20 is connected to the end surface of the first plate 10, in which case, a portion of the second plate 20 is stacked with the first plate 10, and another portion of the second plate 20 is disposed around the outer circumference of the first plate 10.
The first plate body 10 is coupled to the upper end of the second plate body 20, so that the second plate body 20 can serve as a support for the first plate body 10, thereby improving the structural strength of the first plate body 10.
Or, the first plate 10 is connected to the lower end of the second plate 20, and the joint of the first plate 10 and the second plate 20 may serve as a weak area, which serves as an explosion-proof valve, so that gas is blown out therefrom, and the safety performance of the battery is ensured.
It should be noted that the upper end and the lower end of the second plate 20 can be regarded as the upper surface and the lower surface of the second plate 20, and when the battery cover plate is used for a battery, the lower surface of the second plate 20 faces the battery cell, and the upper surface of the second plate 20 faces away from the battery cell.
In some embodiments, the first plate 10 may be directly disposed on the surface of the second plate 20, i.e., the first plate 10 may integrally protrude from the surface of the second plate 20.
In some embodiments, as shown in fig. 2, the second plate 20 is provided with a recess 23, and a portion of the first plate 10 is located in the recess 23, so as to improve the connection stability between the first plate 10 and the second plate 20.
The depth of the recess 23 may be equal to the thickness of the first plate body 10, so that the first plate body 10 may not protrude from the surface of the second plate body 20. The depth of the recess 23 may be greater than the thickness of the first plate body 10 so that the first plate body 10 does not protrude from the surface of the second plate body 20. The depth of the recess 23 may be less than the thickness of the first plate body 10, such that a portion of the first plate body 10 protrudes above the surface of the second plate body 20.
In one embodiment, the first plate 10 and the second plate 20 are welded, so as to ensure the connection stability of the first plate 10 and the second plate 20. The first plate body 10 and the second plate body 20 may be laser welded, the first plate body 10 and the second plate body 20 may be ultrasonic welded, or the first plate body 10 and the second plate body 20 may be resistance welded.
In one embodiment, the first plate 10 and the second plate 20 may be snap-fit, for example, the first plate 10 and the second plate 20 may be interference fit.
As shown in fig. 3, the battery cover plate 1 formed by the first plate 10 and the second plate 20 may have a substantially circular structure. The first plate 10 may be a cylindrical structure and the second plate 20 may be a circular ring structure.
An embodiment of the utility model also provides a battery, which comprises the battery cover plate.
The battery of one embodiment of the present invention includes a battery cover plate, the battery cover plate includes a first plate 10 and a second plate 20, and the second plate 20 is disposed at the periphery of the first plate 10, so that the second plate 20 can be used for connecting with a housing member of the battery, since the maximum thickness of the first plate 10 is smaller than the minimum thickness of the second plate 20, that is, the thickness of the second plate 20 is relatively large, the battery cover plate can bear the assembly pressure of the battery, thereby facilitating the connection between the second plate 20 and the housing member, and the thickness of the first plate 10 is relatively small, so that the battery cover plate can be used for explosion protection and the like, thereby improving the performance of the battery.
It is to be understood that the battery includes a cell and an electrolyte, and a minimum unit capable of performing an electrochemical reaction such as charge/discharge. The battery cell refers to a unit formed by winding or laminating a stack including a first electrode, a separator, and a second electrode. When the first electrode is a positive electrode, the second electrode is a negative electrode. Wherein the polarities of the first electrode and the second electrode can be interchanged.
In one embodiment, as shown in fig. 3, the battery further includes: the housing part 30, the battery cover plate and the housing part 30 are connected in a sealing manner, so that the battery cell 50 is sealed.
The battery cover plate and the shell member 30 can be welded, or the battery cover plate and the shell member 30 can be riveted, in some embodiments, the battery cover plate and the shell member 30 can be connected in a binding sealing mode, not only is the connection mode simple, but also the reliable sealing connection of the battery cover plate and the shell member 30 can be ensured, in the specific connection process, the shell member 30 can be deformed and bent, so that the battery cover plate is pressed, and therefore the connection of the battery cover plate and the shell member 30 is realized, or the battery cover plate can be deformed and bent, so that the shell member 30 is pressed, and therefore the connection of the battery cover plate and the shell member 30 is realized. A seal 40 may be disposed between the battery cover and the housing member 30.
In one embodiment, as shown in fig. 2, the second plate 20 of the battery cover plate 1 is connected with the housing member 30, and at least a portion of the first plate 10 can be disposed apart from the second plate 20 for venting the battery, thereby ensuring the safety of the battery.
The junction of the second plate body 20 and the first plate body 10 may burst open when the internal pressure of the battery is high. Alternatively, the first plate body 10 may be provided with a weakened portion, for example, the weakened portion may be a score, so that the burst can be performed when the internal pressure of the battery is high.
The first plate body 10 may be an aluminum plate, a steel plate, a copper plate, or a nickel plate. The second plate body 20 may be an aluminum plate, a steel plate, a copper plate, or a nickel plate.
In some embodiments, the housing member 30 may include a main body portion and a cover body portion, which may be separate structures, the cover body portion may be configured like a battery cover plate, and the cover body portion may be disposed opposite the battery cover plate. The body portion and the cover portion may be welded or otherwise connected.
In some embodiments, the housing member 30 is an integrally formed structure, which is not only simple to manufacture, but also relatively efficient to manufacture, and can ensure reliable sealing performance.
In one embodiment, at least one of the battery cover plate 1 and the housing member 30 may be directly electrically connected to a tab of the battery cell 50. Alternatively, at least one of the battery cover plate 1 and the housing member 30 may be electrically connected to tabs of the battery cells 50 via a current collecting plate 60, as shown in fig. 2, the housing member 30 may be connected to the current collecting plate 60, and the current collecting plate 60 is connected to the tabs of the battery cells 50. The housing part 30 may be welded to the current collecting plate 60, and the current collecting plate 60 is welded to a tab of the battery cell 50. In some embodiments, it is not excluded that the battery cover plate 1 may be provided with a pole, and the pole is used to electrically connect with a pole ear of the battery cell 50.
It should be noted that the electrical core 50 may include two tabs, one tab is a positive tab, and the other tab is a negative tab, the present invention focuses on the tab corresponding to one side of the battery cover plate 1, for example, one side of the battery cover plate 1 may correspond to the positive tab, while the connection manner of the negative tab on the other side is not limited, for example, the negative tab may be electrically connected to the post on the case member 30, at this time, the post and the case member 30 may serve as an electrode leading-out end of the battery, or the post and the battery cover plate 1 may serve as the electrode leading-out end of the battery. Alternatively, one side of the battery cover plate 1 may correspond to the negative electrode tab, and the connection manner of the positive electrode tab on the other side is not limited, for example, the positive electrode tab may be electrically connected to the electrode post on the housing member 30, at this time, the electrode post and the housing member 30 may be used as the electrode leading-out terminal of the battery, or the electrode post and the battery cover plate 1 may be used as the electrode leading-out terminal of the battery.
It should be noted that the cell may be of a cylindrical configuration. In some embodiments, it is not excluded that the battery may be a cuboid structure.
An embodiment of the utility model also provides a battery pack comprising the battery.
The battery pack according to an embodiment of the present invention includes a battery, a battery cover plate of the battery includes a first plate 10 and a second plate 20, and the second plate 20 is disposed at the periphery of the first plate 10, such that the second plate 20 is used to connect with a housing member of the battery, since the maximum thickness of the first plate 10 is smaller than the minimum thickness of the second plate 20, i.e., the thickness of the second plate 20 is relatively large, the battery cover plate can bear the assembly pressure of the battery, thereby facilitating the connection between the second plate 20 and the housing member, and the thickness of the first plate 10 is relatively small, which can be used for explosion protection and the like, thereby improving the performance of the battery pack.
In one embodiment, the battery pack is a battery module or a battery pack.
The battery module includes a plurality of batteries, and the battery can be square battery, and the battery module can also include end plate and curb plate, and end plate and curb plate are used for fixing a plurality of batteries. The battery can be a cylindrical battery, and the battery module can further comprise a bracket, and the battery can be fixed on the bracket.
The battery pack includes a plurality of batteries and a case for fixing the plurality of batteries.
It should be noted that, the battery pack includes a plurality of batteries, and a plurality of batteries are disposed in the box body. Wherein, a plurality of batteries can form and install in the box behind the battery module. Or, a plurality of batteries can directly set up in the box, need not to carry out the group to a plurality of batteries promptly, utilizes the box to fix a plurality of batteries.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the utility model disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the utility model following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and example embodiments be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (13)
1. A battery cover plate, comprising:
a first plate body (10);
the second plate body (20), the second plate body (20) is arranged on the periphery of the first plate body (10);
wherein the maximum thickness value of the first plate body (10) is smaller than the minimum thickness value of the second plate body (20).
2. The battery cover plate according to claim 1, wherein the first plate body (10) and the second plate body (20) are of an integrally molded structure.
3. The battery cover plate according to claim 2, characterized in that the second plate body (20) comprises a first plate section (21) and a second plate section (22), the first plate section (21) being arranged at least partially coinciding with the second plate section (22) along a projection of the plane in which the second plate section (22) lies.
4. The battery cover plate according to claim 3, wherein the first plate segment (21) is disposed in parallel with the second plate segment (22).
5. The battery cover plate according to claim 3, wherein the first plate body (10) is an equal-thickness plate body, and the thickness value of at least a portion of the second plate body (20) is 2 times the thickness value of the first plate body (10).
6. The battery cover plate according to claim 1, wherein the first plate body (10) and the second plate body (20) are of a split molded structure;
wherein the first plate body (10) is connected to the upper end of the second plate body (20);
or, the first plate body (10) is connected to the lower end of the second plate body (20).
7. The battery cover plate according to claim 6, wherein a recess (23) is provided on the second plate body (20), and a portion of the first plate body (10) is located in the recess (23).
8. The battery cover plate according to any one of claims 5 to 7, wherein the first plate body (10) and the second plate body (20) are welded.
9. A battery comprising the battery cover plate according to any one of claims 1 to 8.
10. The battery of claim 9, further comprising: a housing member (30), wherein the battery cover plate and the housing member (30) are connected in a sealing manner;
the second plate body (20) is connected with the housing part (30), and at least part of the first plate body (10) can be separated from the second plate body (20) and used for pressure relief of the battery.
11. The battery of claim 9, further comprising: and the housing piece (30) is in edge-rolling sealing connection with the battery cover plate and the housing piece (30).
12. The battery according to any one of claims 9 to 11, wherein the battery is a cylindrical battery.
13. A battery comprising the cell of any one of claims 9 to 12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220388421.6U CN216773369U (en) | 2022-02-24 | 2022-02-24 | Battery cover plate, battery and battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220388421.6U CN216773369U (en) | 2022-02-24 | 2022-02-24 | Battery cover plate, battery and battery pack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216773369U true CN216773369U (en) | 2022-06-17 |
Family
ID=81959170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220388421.6U Active CN216773369U (en) | 2022-02-24 | 2022-02-24 | Battery cover plate, battery and battery pack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216773369U (en) |
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2022
- 2022-02-24 CN CN202220388421.6U patent/CN216773369U/en active Active
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