CN218896712U

CN218896712U - Cover plate assembly and battery thereof

Info

Publication number: CN218896712U
Application number: CN202223550432.9U
Authority: CN
Inventors: 刘友健
Original assignee: Svolt Energy Technology Co Ltd
Current assignee: Svolt Energy Technology Co Ltd
Priority date: 2022-12-28
Filing date: 2022-12-28
Publication date: 2023-04-21
Anticipated expiration: 2032-12-28

Abstract

The utility model discloses a cover plate component and a battery thereof, wherein the cover plate component comprises: the cover plate body is provided with a first through hole; the upper plastic part comprises a body part and a skirt edge part, the body part is arranged on the cover plate body, a second through hole is formed in the body part, the skirt edge part is arranged around the circumferential side surface of the body part and connected with the body part, and the skirt edge part is stopped against the cover plate body; the riveting block is arranged on the body part and is provided with a third through hole; the pole is arranged on the first through hole, the second through hole and the third through hole in a penetrating mode. The cover plate component can reduce the risk that metal scraps on the riveting block are lapped on the surface of the cover plate body, and improve the safety of the battery.

Description

Cover plate assembly and battery thereof

Technical Field

The utility model belongs to the technical field of batteries, and particularly relates to a cover plate assembly and a battery thereof.

Background

With the increasing maturity of lithium ion battery technology, the lithium ion battery is widely applied to the electric automobile and the energy storage field as a power battery, and the requirements on the usability and the safety of the lithium ion battery are increasing.

The lithium battery top cover is a core component of safety and sealing performance, and the performance stability of the lithium battery top cover is crucial to the cover plate assembly. The existing riveting block processing mode comprises continuous stamping forming, blanking, polishing, cleaning, metal scraps removing and the like.

The riveting block adopts a stamping process, and metal scraps risk exists at the edge of the broken material, so that the upper surface of the cover plate body is in lap joint short circuit. Although the existing scrap removing process is improved (such as a vibration polishing process, a cleaning process and the like), the risk of scraps of the riveting block is still present. The side of the riveting block is polluted by external metal scraps, so that the lap joint short circuit of the upper surface of the cover plate body can be caused.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems in the related art to some extent. Therefore, an objective of the present utility model is to provide a cover assembly to solve the technical problem of overlap short circuit on the upper surface of the cover body in the prior art.

The utility model also aims to provide a battery for applying the cover plate assembly.

A cover plate assembly according to an embodiment of the present utility model includes: the cover plate body is provided with a first through hole; the upper plastic part comprises a body part and a skirt edge part, the body part is arranged on the cover plate body, a second through hole is formed in the body part, the skirt edge part is arranged around the circumferential side surface of the body part and connected with the body part, and the skirt edge part is stopped against the cover plate body; the riveting block is arranged on the body part and is provided with a third through hole; the pole is penetrated on the first through hole, the second through hole and the third through hole.

According to the cover plate assembly provided by the embodiment of the utility model, the skirt edge part is arranged on the upper plastic part and is arranged and connected around the circumferential side surface of the body part, so that the risk that metal scraps on the riveting block are lapped on the surface of the cover plate body is reduced, and the safety of a battery is improved.

In some embodiments, the cover plate body is provided with a mounting groove, and the body part is arranged in the mounting groove.

In some embodiments, the body portion includes a flat plate portion and a protruding portion, the protruding portion is disposed at an upper end of the flat plate portion and is disposed around a circumferential edge of the flat plate portion, a groove is disposed on the riveting block, and the protruding portion is disposed in the groove.

In some embodiments, the skirt portion is provided on a side of the boss.

In some embodiments, the skirt portion has a width dimension A, wherein 0mm < A < 10mm.

In some embodiments, the cover plate assembly further comprises: the top cover patch is arranged on the cover plate body, a fourth through hole is formed in the top cover patch, and the skirt edge part is located in the fourth through hole and in clearance fit with the fourth through hole.

In some embodiments, the gap dimension of the skirt portion and the fourth through hole is B, wherein 0mm < B < 5mm.

In some embodiments, the width of the protrusion is less than or equal to the groove width of the groove.

In some embodiments, the cover plate further comprises a lower plastic part arranged on one side of the cover plate body away from the upper plastic part.

The battery comprises the cover plate assembly. Thereby, the safety performance of the battery is improved.

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 schematic structural view of a cover plate assembly according to one embodiment of the present utility model;

FIG. 2 is a top view of the utility model of FIG. 1;

FIG. 3 isbase:Sub>A cross-sectional view taken along the direction A-A in FIG. 2 in accordance with the present utility model;

fig. 4 is an enlarged view of section I of fig. 3 of the present utility model.

Reference numerals:

100. a cover plate assembly;

10. a cover plate body; 101. a first through hole;

20. applying a plastic part; 201. a body portion; 2011. a flat plate portion; 2012. a boss; 202. a skirt portion;

30. riveting blocks;

40. a pole;

50. a top cover patch; 501. a fourth through hole;

60. and (5) lower plastic parts.

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 and intended to explain the present utility model and should not 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, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

Referring now to fig. 1-4, a cover plate assembly 100 in accordance with an embodiment of the present utility model is described.

As shown in fig. 1 and 3, a cap plate assembly 100 according to an embodiment of the present utility model includes: the cover plate comprises a cover plate body 10, an upper plastic part 20, a riveting block 30 and a pole 40.

The cover plate body 10 is provided with a first through hole 101; the upper plastic part 20 comprises a body part 201 and a skirt part 202, wherein the body part 201 is arranged on the cover plate body 10, a second through hole (not shown in the figure) is arranged on the body part 201, the skirt part 202 is arranged around the circumferential side surface of the body part 201 and connected, and the skirt part 202 is abutted against the cover plate body 10; the riveting block 30 is arranged on the body part 201, and a third through hole (not shown in the figure) is arranged on the riveting block 30; the post 40 is penetrated on the first through hole 101, the second through hole, and the third through hole.

It can be understood that the upper plastic part 20 in the present application is provided with the skirt portion 202, the skirt portion 202 circumferentially surrounds the side surface of the body portion 201, that is, the coverage area of the upper plastic part 20 on the cover plate body 10 is increased, the riveting block 30 is arranged on the body portion 201, and the side surface of the circumferential edge of the riveting block 30 is located in the range of the skirt portion 202, so that the metal scraps on the riveting block 30 can fall on the skirt portion 202, the lap risk is reduced, and the safety of the battery is improved.

According to the cover plate assembly 100 of the embodiment of the utility model, the skirt edge part 202 is arranged on the upper plastic part 20, and the skirt edge part 202 is arranged around the circumferential side surface of the body part 201 and connected, so that the risk that metal scraps on the riveting block 30 overlap the surface of the cover plate body 10 is reduced, and the safety of a battery is improved.

In some embodiments, referring to fig. 3 and 4, the cover body 10 is provided with a mounting groove (not shown), and the body 201 is disposed in the mounting groove. It will be appreciated that by the above arrangement, the body portion 201 and the cover plate body 10 are combined more firmly and reliably.

In some embodiments, referring to fig. 3 and 4, the body 201 includes a flat plate 2011 and a protrusion 2012, the protrusion 2012 is disposed at an upper end of the flat plate 2011 and around a circumferential edge of the flat plate 2011, a groove (not shown in the drawings) is disposed on the riveting block 30, and the protrusion 2012 is disposed in the groove. It will be appreciated that by the above arrangement, the body portion 201 and the rivet block 30 are combined more firmly and reliably.

In some embodiments, referring to fig. 4, skirt portion 202 is provided on a side of boss 2012. It will be appreciated that by the above arrangement, the upper molding 20 is made to maximize the area on the cover plate body 10.

In some embodiments, referring to FIG. 4, the skirt portion 202 has a width dimension A, where 0mm < A < 10mm. It will be appreciated that by setting the width dimension of the skirt portion 202 to 0mm < A < 10mm, the skirt portion 202 can receive the metal chips falling from the rivet block 30 while saving the material of the skirt portion 202. The width dimension may be the dimension in the left-right direction in fig. 4. While A may be any value of 0mm < A < 10mm, for example, A may be 1mm, 2mm, 5mm, 9mm, or the like.

In some embodiments, referring to fig. 3 and 4, the cover assembly 100 further includes a cover patch 50, where the cover patch 50 is disposed on the cover body 10, a fourth through hole 501 is disposed on the cover patch 50, and the skirt portion 202 is located in the fourth through hole 501 and is in clearance fit with the fourth through hole 501. It will be appreciated that by having the cap patch 50 be in a clearance fit with the skirt portion 202, the cap patch 50 is readily mounted on the cover body 10. It should be noted that, the top cover patch 50 may be manufactured by a cutting process, and the process is simple and the processing precision is high.

In some embodiments, referring to FIG. 4, the gap size between the skirt portion 202 and the fourth through hole 501 is B, where 0mm < B < 5mm. The gap dimension B may be any value of 0mm < B < 5mm, and for example, B may be 1mm, 2mm, 3mm, 4mm, or the like. While the gap dimension B may be the dimension in the left-right direction in fig. 4.

In some embodiments, referring to fig. 4, the width of the boss 2012 is less than or equal to the groove width of the groove, thereby making the bonding of the boss 2012 and the rivet block 30 stronger.

In some embodiments, referring to fig. 1, a lower molding 60 is further included, the lower molding 60 being disposed on a side of the cover body 10 remote from the upper molding 20.

A battery according to an embodiment of the present utility model includes the above-described cap plate assembly 100. Thereby, the safety performance of the battery is improved.

One specific embodiment of the cover plate assembly 100 of the present utility model is described below with reference to the accompanying drawings.

As shown in fig. 1-4, the cover plate assembly 100 includes: the cover plate comprises a cover plate body 10, an upper plastic part 20, a riveting block 30, a pole 40, a top cover patch 50 and a lower plastic part 60.

The cover plate body 10 is provided with a first through hole 101; the upper plastic part 20 comprises a body part 201 and a skirt part 202, the body part 201 is arranged on the cover plate body 10, a second through hole is arranged on the body part 201, the skirt part 202 is arranged around the circumferential side surface of the body part 201 and connected, and the skirt part 202 is abutted against the cover plate body 10; the riveting block 30 is arranged on the body part 201, and a third through hole is arranged on the riveting block 30; the post 40 is penetrated on the first through hole 101, the second through hole, and the third through hole. The top cover patch 50 is disposed on the cover body 10, a fourth through hole 501 is disposed on the top cover patch 50, and the skirt portion 202 is disposed in the fourth through hole 501 and is in clearance fit with the fourth through hole 501. The lower molding 60 is provided on a side of the cover body 10 remote from the upper molding 20.

The cover body 10 is provided with a mounting groove, and the body 201 is provided in the mounting groove. The body 201 includes a flat plate 2011 and a protrusion 2012, the protrusion 2012 is disposed at an upper end of the flat plate 2011 and around a circumferential edge of the flat plate 2011, the riveting block 30 is provided with a groove, and the protrusion 2012 is disposed in the groove. Skirt portion 202 is provided on the side of boss 2012. The width dimension of the skirt portion 202 is a, where a=5 mm. The gap size of the skirt portion 202 and the fourth through hole 501 is B, where b=2 mm. The width of the boss 2012 is equal to the groove width of the groove.

In the description of the present specification, a description referring to terms "one embodiment," "some 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 present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Claims

1. A cover plate assembly, comprising:

the cover plate body is provided with a first through hole;

the upper plastic part comprises a body part and a skirt edge part, the body part is arranged on the cover plate body, a second through hole is formed in the body part, the skirt edge part is arranged around the circumferential side surface of the body part and connected with the body part, and the skirt edge part is stopped against the cover plate body;

the riveting block is arranged on the body part and is provided with a third through hole;

the pole is penetrated on the first through hole, the second through hole and the third through hole.

2. The cover plate assembly of claim 1, wherein the cover plate body is provided with a mounting slot, and the body portion is disposed within the mounting slot.

3. The cover plate assembly of claim 1, wherein the body portion includes a flat plate portion and a protrusion portion, the protrusion portion is disposed at an upper end of the flat plate portion and disposed around a circumferential edge of the flat plate portion, the rivet block is provided with a groove, and the protrusion portion is disposed in the groove.

4. A cover plate assembly according to claim 3, wherein the skirt portion is provided on a side of the boss.

5. The cover plate assembly of claim 4 wherein the skirt portion has a width dimension a, wherein 0mm < a < 10mm.

6. The cover plate assembly of claim 5, further comprising:

the top cover patch is arranged on the cover plate body, a fourth through hole is formed in the top cover patch, and the skirt edge part is located in the fourth through hole and in clearance fit with the fourth through hole.

7. The cover plate assembly of claim 6, wherein a gap dimension of the skirt portion and the fourth through hole is B, wherein 0mm < B < 5mm.

8. The cover plate assembly of claim 3, wherein the width of the boss is less than or equal to the groove width of the groove.

9. The cover assembly of claim 1, further comprising a lower molding disposed on a side of the cover body remote from the upper molding.

10. A battery comprising the cap plate assembly of any one of claims 1-9.