CN216671782U

CN216671782U - Cover plate assembly and battery with same

Info

Publication number: CN216671782U
Application number: CN202122981505.9U
Authority: CN
Inventors: 娄佳训; 杨红新; 高顺航
Original assignee: Svolt Energy Technology Co Ltd
Current assignee: Svolt Energy Technology Co Ltd
Priority date: 2021-11-30
Filing date: 2021-11-30
Publication date: 2022-06-03
Anticipated expiration: 2031-11-30
Also published as: WO2023098096A1; DE212022000179U1

Abstract

The utility model provides a cover plate assembly and a battery with the same, wherein the cover plate assembly comprises: the cover plate main body is provided with a through hole; the pole structure is at least partially arranged in the through hole in a penetrating way; the insulating component is at least partially clamped between the cover plate main body and the pole structure; the pole structure is provided with a first pole part positioned on the outer side of the cover plate main body, and the first pole part is provided with a pole peripheral surface; the insulating member has an insulating flange portion disposed around the first pole portion, the insulating flange portion having an insulating outer peripheral surface; the curved surface of the insulating peripheral surface is positioned on the outer side of the curved surface of the peripheral surface of the pole. The problem that the cover plate assembly in the prior art is prone to insulation failure is solved.

Description

Cover plate assembly and battery with same

Technical Field

The utility model relates to the field of batteries, in particular to a cover plate assembly and a battery with the same.

Background

Nowadays, energy and environmental problems are increasingly highlighted, and in order to relieve energy and environmental stress, the development of new energy becomes a strategy. In the field of automobiles, new energy electric automobiles are developed to be a great development trend. The core power source of the electric automobile is a power battery, so the performance of the power battery is particularly important. The battery core is used as a storage unit of a common power battery and mainly comprises a cover plate, an aluminum shell and a pole group. Wherein, the cover plate structure is the most complicated, and the cover plate structure mainly includes aluminium sheet and utmost point post. The pole column part is insulated by separating the smooth aluminum sheet and the riveting aluminum block through insulating upper plastic.

The plastic card is gone up in the insulation at present apron utmost point post position between riveting aluminium pig and the smooth aluminum sheet, and this structure can play insulating effect. However, in the actual process of manufacturing the riveted aluminum block and the polished aluminum sheet, aluminum wires are generated at the edge. The aluminum wire can conduct the riveting aluminum block and the polished aluminum sheet, so that insulation failure is caused.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a cover plate assembly and a battery with the same, so as to solve the problem that insulation of the cover plate assembly in the prior art is easy to lose efficacy.

In order to achieve the above object, according to one aspect of the present invention, there is provided a cap plate assembly including: the cover plate main body is provided with a through hole; the pole structure is at least partially arranged in the through hole in a penetrating way; the insulating component is at least partially clamped between the cover plate main body and the pole structure; the pole structure is provided with a first pole part positioned on the outer side of the cover plate main body, and the first pole part is provided with a pole peripheral surface; the insulating member has an insulating flange portion disposed around the first pole portion, the insulating flange portion having an insulating outer peripheral surface; the curved surface of the insulating peripheral surface is positioned on the outer side of the curved surface of the peripheral surface of the pole.

Furthermore, the insulating outer peripheral surface and the pole outer peripheral surface are both annular.

Further, the first pole part is provided with an outer end face of the pole located on the outer side of the cover plate body, one end, away from the cover plate body, of the insulating part is provided with an insulating end face, and the outer end face of the pole is located on one side, away from the cover plate body, of the insulating end face.

Further, along the extending direction of the pole structure, the distance between the outer end face of the pole and the insulating end face is 0.1mm to 0.3 mm.

Further, along the extending direction of the pole structure, the distance between the outer end face of the pole and the insulating end face is 0.2 mm.

Further, along the extending direction of the pole column structure, the insulating end face is located at one half to two thirds of the height of the peripheral surface of the pole column.

Furthermore, the insulating component also comprises an insulating main body which is clamped between the first pole part and the cover plate main body; the insulating body is connected to the insulating flange portion.

Further, the thickness of the insulating flange portion is greater than or equal to the thickness of the insulating main body; and/or the insulating flange portion is integrally formed with the insulating body.

Furthermore, one side of the cover plate main body, which is close to the first pole part, is provided with a pole sinking groove, and at least part of the insulating component is arranged in the pole sinking groove.

According to another aspect of the present invention, a battery is provided, which includes a battery cell and a cover plate assembly covering the battery cell, wherein the cover plate assembly is the above-mentioned cover plate assembly.

By applying the technical scheme, the cover plate assembly comprises a cover plate main body, a pole post structure and an insulating part, wherein a through hole is formed in the cover plate main body, at least part of the pole post structure is arranged in the through hole in a penetrating mode, and at least part of the insulating part is clamped between the cover plate main body and the pole post structure; the pole structure is provided with a first pole part positioned on the outer side of the cover plate main body, and the first pole part is provided with a pole peripheral surface; the insulating component is provided with an insulating flange part arranged around the first pole part, and the insulating flange part is provided with an insulating outer peripheral surface; the curved surface of the insulating outer peripheral surface is positioned on the outer side of the curved surface of the outer peripheral surface of the pole. Like this for insulating part parcel live utmost point post structure can effectively avoid the problem of battery short circuit in the manufacture process, avoids insulating inefficacy.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:

FIG. 1 shows an overall structural schematic of an embodiment of a cover plate assembly according to the present invention;

FIG. 2 shows a top view of the cover plate assembly according to FIG. 1;

FIG. 3 shows a schematic structural view according to section A-A of the cover plate assembly in FIG. 2;

FIG. 4 shows an enlarged schematic view of the region B of the cover plate assembly according to FIG. 3;

figure 5 shows a schematic structural view of a second pole part of an embodiment of a cover plate assembly according to the utility model; and

fig. 6 shows a schematic structural view of an insulating member of an embodiment of a cap plate assembly according to the present invention.

Wherein the figures include the following reference numerals:

10. a cover plate main body; 101. perforating holes; 11. sinking a pole into a groove; 20. a pole structure; 21. a first pole section; 210. the peripheral surface of the pole; 211. the outer end face of the pole; 212. the pole is penetrated through the hole; 2120. riveting holes; 2121. connecting holes; 22. a second pole section; 30. an insulating member; 300. an insulated end face; 31. an insulating flange portion; 310. an insulating peripheral surface; 32. an insulating body.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the utility model, its application, or uses. 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 invention.

Referring to fig. 1 to 6, the present invention provides a cover plate assembly, including: the cover plate comprises a cover plate main body 10, wherein a through hole 101 is formed in the cover plate main body 10; the pole structure 20, at least part of the pole structure 20 is arranged in the through hole 101 in a penetrating way; the insulating component 30, at least part of the insulating component 30 is clamped between the cover plate main body 10 and the pole structure 20; the pole structure 20 has a first pole part 21 located outside the cover plate body 10, and the first pole part 21 has a pole outer peripheral surface 210; the insulating member 30 has an insulating flange portion 31 provided around the first pole portion 21, the insulating flange portion 31 having an insulating outer peripheral surface 310; the curved surface of the insulating outer peripheral surface 310 is located outside the curved surface of the pole outer peripheral surface 210.

The cover plate assembly comprises a cover plate main body 10, a pole structure 20 and an insulating part 30, wherein the cover plate main body 10 is provided with a through hole 101, at least part of the pole structure 20 is arranged in the through hole 101 in a penetrating way, and at least part of the insulating part 30 is clamped between the cover plate main body 10 and the pole structure 20; the pole structure 20 has a first pole part 21 located outside the cover plate body 10, and the first pole part 21 has a pole outer peripheral surface 210; the insulating member 30 has an insulating flange portion 31 provided around the first pole portion 21, the insulating flange portion 31 having an insulating outer peripheral surface 310; the curved surface of the insulating outer peripheral surface 310 is located outside the curved surface of the pole outer peripheral surface 210. Therefore, the insulating component 30 wraps the pole structure 20, the problem of short circuit of the battery in the manufacturing process can be effectively avoided, and insulation failure is avoided.

Specifically, the insulating outer circumferential surface 310 and the pole outer circumferential surface 210 are both annular.

As shown in fig. 4, the first pole part 21 has an outer end surface 211 of the pole located outside the cover main body 10, one end of the insulating member 30 away from the cover main body 10 has an insulating end surface 300, and the outer end surface 211 of the pole is located on one side of the insulating end surface 300 away from the cover main body 10.

Specifically, the distance between the terminal outer end surface 211 and the insulating end surface 300 is 0.1mm to 0.3mm in the extending direction of the terminal structure 20.

In the embodiment of the present invention, the distance between the outer end surface 211 of the terminal and the insulating end surface 300 is 0.2mm, and the distance between the insulating end surface 300 and the cover plate main body 10 is smaller than the distance between the outer end surface 211 of the terminal and the cover plate main body 10, so that the welding between the terminal structure 20 and the bus bar is facilitated. Meanwhile, the redundant part around the riveting aluminum block (the first pole part 21) is milled away to reduce the weight of the cover plate assembly.

Specifically, the insulating end face 300 is located at one-half to two-thirds of the height of the pole outer peripheral surface 210 in the extending direction of the pole structure 20.

In the embodiment of the present invention, the first pole part 21 is a welded aluminum block, the cover plate body 10 is a smooth aluminum plate, and the first pole part 21 and the second pole part 22 are connected by riveting.

Specifically, the first pole part 21 has a pole penetrating hole 212 for the second pole part 22 to pass through, at least a portion of the second pole part 22 penetrates through the pole penetrating hole 212, the pole penetrating hole 212 includes a riveting hole 2120 for riveting with the second pole part 22 and a connection hole 2121 for the second pole part 22 to pass through, wherein the diameter of the riveting hole 2120 is larger than that of the connection hole 2121.

The connecting hole 2121 is a counter bore, and the connecting hole 2121 is butted with the through hole 101 of the cover plate main body 10.

Specifically, second pole portion 22 is including setting up the first pole post section outside the through hole 101 and the second pole post section of wearing to establish in the through hole 101, first pole post section and second pole post section interconnect, and first pole post section sets up in the inboard of apron main part 10, and the one end and the riveting of first pole post portion 21 of first pole post section are kept away from to the second pole post section.

Specifically, the insulating member 30 further includes an insulating main body 32, and the insulating main body 32 is interposed between the first pole portion 21 and the cap main body 10; the insulating main body 32 is connected to the insulating flange 31.

In the embodiment of the present invention, the thickness of the insulating flange portion 31 is greater than or equal to the thickness of the insulating main body 32; and/or the insulating flange portion 31 is integrally formed with the insulating main body 32.

Specifically, the cover main body 10 is provided with a pole sinking groove 11 on a side close to the first pole part 21, and at least a part of the insulating member 30 is disposed in the pole sinking groove 11.

The utility model also provides a battery, which comprises a battery core and a cover plate assembly covered on the battery core, wherein the cover plate assembly is the cover plate assembly.

From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects:

the cover plate assembly comprises a cover plate main body 10, a pole structure 20 and an insulating part 30, wherein the cover plate main body 10 is provided with a through hole 101, at least part of the pole structure 20 is arranged in the through hole 101 in a penetrating way, and at least part of the insulating part 30 is clamped between the cover plate main body 10 and the pole structure 20; the pole structure 20 has a first pole part 21 located outside the cover plate body 10, and the first pole part 21 has a pole outer peripheral surface 210; the insulating member 30 has an insulating flange portion 31 provided around the first pole portion 21, the insulating flange portion 31 having an insulating outer peripheral surface 310; the curved surface of the insulating outer peripheral surface 310 is located outside the curved surface of the pole outer peripheral surface 210. Like this for insulating part 30 parcel lives utmost point post structure 20, and insulating part 30 card separates riveting aluminium pig and the material of two kinds of metal material of light aluminum sheet between first utmost point post portion 21 (welding aluminium pig) and apron main part 10 (light aluminum plate), can play insulating effect, can effectively avoid the problem of battery short circuit in the manufacture process, avoids insulating inefficacy. The structure can avoid the problem of insulation failure caused by the fact that a riveting aluminum block and a plain aluminum sheet generate short circuit at the edge part in the actual processing process and aluminum wires are conducted.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … … surface," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and unless otherwise stated, the terms have no special meaning, and therefore, the scope of the present invention should not be construed as being limited.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A cover plate assembly, comprising:

the cover plate comprises a cover plate main body (10), wherein a through hole (101) is formed in the cover plate main body (10);

the pole structure (20), at least part of the pole structure (20) is arranged in the through hole (101) in a penetrating way;

an insulating member (30), at least part of the insulating member (30) being interposed between the cover plate body (10) and the pole structure (20);

the pole structure (20) is provided with a first pole part (21) positioned outside the cover plate main body (10), and the first pole part (21) is provided with a pole outer peripheral surface (210); the insulating member (30) has an insulating flange portion (31) provided around the first pole portion (21), the insulating flange portion (31) having an insulating outer peripheral surface (310); the curved surface where the insulating outer peripheral surface (310) is located on the outer side of the curved surface where the pole outer peripheral surface (210) is located.

2. The cover plate assembly according to claim 1, wherein the insulating peripheral surface (310) and the pole peripheral surface (210) are both annular.

3. The cover plate assembly according to claim 1, wherein the first pole section (21) has an outer pole end face (211) located outside the cover plate body (10), wherein an end of the insulating member (30) remote from the cover plate body (10) has an insulating end face (300), and wherein the outer pole end face (211) is located on a side of the insulating end face (300) remote from the cover plate body (10).

4. The cover plate assembly according to claim 3, wherein the distance between the pole outer end face (211) and the insulating end face (300) in the extension direction of the pole structure (20) is 0.1mm to 0.3 mm.

5. The cover plate assembly according to claim 3, wherein the distance between the pole outer end face (211) and the insulating end face (300) in the extension direction of the pole structure (20) is 0.2 mm.

6. The cover plate assembly according to claim 3, characterized in that the insulating end surface (300) is located one half to two thirds of the height of the pole peripheral surface (210) in the extension direction of the pole structure (20).

7. The cover plate assembly according to any one of claims 1 to 6, wherein the insulating member (30) further comprises an insulating body (32), the insulating body (32) being sandwiched between the first pole part (21) and the cover plate body (10); the insulating main body (32) is connected to the insulating flange section (31).

8. The cover plate assembly according to claim 7, wherein the thickness of the insulating flange portion (31) is greater than or equal to the thickness of the insulating body (32); and/or the insulating flange portion (31) is integrally formed with the insulating main body (32).

9. The cover plate assembly according to any one of claims 1 to 6, characterized in that a side of the cover plate body (10) close to the first pole part (21) is provided with a pole countersink (11), and at least a part of the insulating member (30) is arranged within the pole countersink (11).

10. A battery comprising a cell and a cover assembly for covering the cell, wherein the cover assembly is as claimed in any one of claims 1 to 9.