A battery and cover assembly with the same cover assembly.

Abstract

DEPCT67 This patent application provides for a battery assembly including a housing and battery pack. Similarly, the cover plate assembly kit includes: the cover plate frame which is provided with holes. Through; a polar structure, at least part of which is moving through a through hole; a component used as... The insulation, at least part of which is sandwiched between the cover plate and the terminal structure; where The pole structure is provided with the first pole section positioned on the outside of the frame. The cover plate and the first part of the terminal are provided with the surrounding polarized surface; the insulating part is... It is supplied with an insulating flange section that surrounds the first terminal section and the second flange section. Used as insulation; the surrounding surface is used as insulation; the surrounding surface used as insulation is positioned on the surface. The curve is positioned on the outside of the curved surface on which the polar circumferential surface is positioned. (Request) This patent solves a problem in the art and science of previous designs where the cover plate assembly was easily damaged. Insulation failure

Description

Cover plate assembly and battery having the same

[0001] This application claims priority to the patent application submitted to the State Intellectual Property Office of China on November 30, 2021, with application number 202122981505.9 and application name "Cover assembly and battery having the same". Technical Field

[0002] The present application relates to the field of batteries, and in particular, to a cover plate assembly and a battery having the same. Background Art

[0003] Energy and environmental issues are becoming increasingly prominent. To alleviate these pressures, developing new energy sources has become a strategic strategy. In the automotive sector, the development of new energy electric vehicles has become a major trend. The core power source of electric vehicles is the power battery, making its performance particularly important. A battery cell, the storage unit of a common power battery, primarily consists of a cover plate, an aluminum shell, and a pole group. The cover plate structure is the most complex, primarily consisting of a bare aluminum sheet and poles. The poles are insulated by insulating plastic, separating the bare aluminum sheet from the riveted aluminum block.

[0004] The existing insulating plastic on the pole cover is sandwiched between the riveted aluminum block and the plain aluminum sheet. This structure provides insulation. However, during the actual processing of the riveted aluminum block and the plain aluminum sheet, aluminum wires can form at the edges. These wires can connect the riveted aluminum block and the plain aluminum sheet, causing insulation failure.

[0005] Utility Model Content

[0006] The main purpose of the present application is to provide a cover plate assembly and a battery having the same, so as to solve the problem in the prior art that the cover plate assembly is prone to insulation failure.

[0007] In order to achieve the above-mentioned purpose, according to one aspect of the present application, a cover assembly is provided, including: a cover body, a through hole is provided on the cover body; a pole structure, at least a portion of the pole structure is passed through the through hole; an insulating component, at least a portion of the insulating component is sandwiched between the cover body and the pole structure; wherein the pole structure has a first pole portion located outside the cover body, the first pole portion has a pole outer peripheral surface; the insulating component has an insulating flange portion arranged around the first pole portion, the insulating flange portion has an insulating outer peripheral surface; the curved surface where the insulating outer peripheral surface is located is located outside the curved surface where the pole outer peripheral surface is located.

[0008] Furthermore, the insulating outer peripheral surface and the pole outer peripheral surface are both annular.

[0009] Furthermore, the first pole portion has a pole outer end surface located outside the cover body, the end of the insulating component away from the cover body has an insulating end surface, and the pole outer end surface is located on the side of the insulating end surface away from the cover body.

[0010] Furthermore, along the extension direction of the pole structure, the distance between the outer end surface of the pole and the insulating end surface is 0.1 mm to 0.3 mm.

[0011] Furthermore, along the extension direction of the pole structure, the distance between the outer end face of the pole and the insulating end face is 0.2 mm.

[0012] Furthermore, along the extension direction of the pole structure, the insulating end surface is located at one-half to two-thirds of the height of the outer peripheral surface of the pole.

[0013] Furthermore, the insulating component further includes an insulating body, which is sandwiched between the first pole portion and the cover plate body; and the insulating body is connected to the insulating flange portion.

[0014] Furthermore, the thickness of the insulating flange portion is greater than or equal to the thickness of the insulating body; or, the insulating flange portion and the insulating body are integrally formed; or, the thickness of the insulating flange portion is greater than or equal to the thickness of the insulating body, and the insulating flange portion and the insulating body are integrally formed.

[0015] Furthermore, a pole recess is provided on one side of the cover plate body close to the first pole portion, and at least a portion of the insulating component is provided in the pole recess.

[0016] According to another aspect of the present application, a battery is provided, comprising a battery cell and a cover plate assembly covering the battery cell, wherein the cover plate assembly is the above-mentioned cover plate assembly.

[0017] Applying the technical solution of the present application, the cover plate assembly of the present application includes a cover plate body, a pole structure, and an insulating component. The cover plate body is provided with a through hole, at least a portion of the pole structure is passed through the through hole, and at least a portion of the insulating component is sandwiched between the cover plate body and the pole structure. The pole structure has a first pole portion located outside the cover plate body, the first pole portion having a pole outer peripheral surface. The insulating component has an insulating flange portion arranged around the first pole portion, the insulating flange portion having an insulating outer peripheral surface. The curved surface on which the insulating outer peripheral surface is located is located outside the curved surface on which the pole outer peripheral surface is located. In this way, the insulating component wraps around the pole structure, which can effectively avoid the problem of short circuit during the battery manufacturing process and prevent insulation failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings that constitute part of this application are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an improper limitation on this application. In the drawings:

[0019] FIG1 shows a schematic diagram of the overall structure of an embodiment of a cover plate assembly according to the present application;

[0020] FIG2 shows a top view of the cover plate assembly according to FIG1 ;

[0021] FIG3 shows a schematic structural diagram of the AA section of the cover plate assembly in FIG2 ;

[0022] FIG4 shows an enlarged schematic diagram of region B of the cover plate assembly in FIG3 ;

[0023] FIG5 shows a schematic structural diagram of a second pole component of an embodiment of a cover plate assembly according to the present application; and

[0024] FIG6 shows a schematic structural diagram of an insulating component of an embodiment of a cover plate assembly according to the present application.

[0025] The above drawings include the following reference numerals:

[0026] 10. Cover plate body; 101. Through hole; 11. Pole sink; 20. Pole structure; 21. First pole portion; 210. Pole outer peripheral surface; 211. Pole outer end surface; 212. Pole through hole; 2120. Riveted hole; 2121. Connecting hole; 22. Second pole portion; 30. Insulating component; 300. Insulating end surface; 31. Insulating flange; 310. Insulating outer peripheral surface; 32. Insulating body. DETAILED DESCRIPTION

[0027] It should be noted that, in the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are only part of the embodiments of this application, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present application and its application or use. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0028] Please refer to Figures 1 to 6. The present application provides a cover assembly, including: a cover body 10, a through hole 101 is provided on the cover body 10; a pole structure 20, at least a portion of the pole structure 20 is passed through the through hole 101; an insulating component 30, at least a portion of the insulating component 30 is sandwiched between the cover body 10 and the pole structure 20; wherein the pole structure 20 has a first pole portion 21 located outside the cover body 10, and the first pole portion 21 has a pole outer peripheral surface 210; the insulating component 30 has an insulating flange portion 31 arranged around the first pole portion 21, and the insulating flange portion 31 has an insulating outer peripheral surface 310; the curved surface where the insulating outer peripheral surface 310 is located is located outside the curved surface where the pole outer peripheral surface 210 is located.

[0029] The cover assembly of the present application includes a cover body 10, a pole structure 20, and an insulating component 30. The cover body 10 is provided with a through hole 101, at least a portion of the pole structure 20 is passed through the through hole 101, and at least a portion of the insulating component 30 is sandwiched between the cover body 10 and the pole structure 20. The pole structure 20 has a first pole portion 21 located outside the cover body 10, and the first pole portion 21 has a pole outer peripheral surface 210. The insulating component 30 has an insulating flange portion 31 arranged around the first pole portion 21, and the insulating flange portion 31 has an insulating outer peripheral surface 310. The curved surface where the insulating outer peripheral surface 310 is located is located outside the curved surface where the pole outer peripheral surface 210 is located. In this way, the insulating component 30 wraps around the pole structure 20, which can effectively avoid the problem of short circuit in the battery during the manufacturing process and avoid insulation failure.

[0030] Specifically, both the insulating outer peripheral surface 310 and the pole outer peripheral surface 210 are annular.

[0031] As shown in Figure 4, the first pole portion 21 has a pole outer end surface 211 located outside the cover body 10, and the end of the insulating component 30 away from the cover body 10 has an insulating end surface 300, and the pole outer end surface 211 is located on the side of the insulating end surface 300 away from the cover body 10.

[0032] Specifically, along the extension direction of the pole structure 20 , the distance between the pole outer end surface 211 and the insulating end surface 300 is 0.1 mm to 0.3 mm.

[0033] In the embodiment of the present application, the spacing between the pole outer end face 211 and the insulating end face 300 is 0.2 mm. The distance between the insulating end face 300 and the cover plate body 10 is smaller than the distance between the pole outer end face 211 and the cover plate body 10. This facilitates welding of the pole structure 20 to the busbar. At the same time, the excess portion around the riveted aluminum block (first pole portion 21) is milled off to reduce the weight of the cover plate assembly.

[0034] Specifically, along the extension direction of the pole structure 20 , the insulating end surface 300 is located at one-half to two-thirds of the height of the pole outer peripheral surface 210 .

[0035] In the embodiment of the present application, the first pole portion 21 is a welded aluminum block, the cover plate body 10 is a plain aluminum plate, and the first pole portion 21 and the second pole portion 22 are connected by riveting.

[0036] Specifically, the first pole portion 21 has a pole penetration hole 212 for the second pole portion 22 to pass through, and at least a portion of the second pole portion 22 is penetrated in the pole penetration hole 212. The pole penetration hole 212 includes a rivet hole 2120 for riveting with the second pole portion 22 and a connection hole 2121 for the second pole portion 22 to pass through, wherein the diameter of the rivet hole 2120 is larger than the diameter of the connection hole 2121.

[0037] The connection hole 2121 is a countersunk hole, and the connection hole 2121 is connected to the through hole 101 of the cover body 10 .

[0038] Specifically, the second pole portion 22 includes a first pole segment arranged outside the penetration hole 101 and a second pole segment penetrated into the penetration hole 101. The first pole segment and the second pole segment are connected to each other. The first pole segment is arranged on the inner side of the cover body 10, and the second pole segment is riveted to the first pole portion 21 at one end away from the first pole segment.

[0039] Specifically, the insulating component 30 further includes an insulating body 32 , which is sandwiched between the first pole portion 21 and the cover plate body 10 ; and the insulating body 32 is connected to the insulating flange portion 31 .

[0040] In an embodiment of the present application, the thickness of the insulating flange portion 31 is greater than or equal to the thickness of the insulating body 32; or, the insulating flange portion 31 and the insulating body 32 are integrally formed; or, the thickness of the insulating flange portion 31 is greater than or equal to the thickness of the insulating body 32, and the insulating flange portion 31 and the insulating body 32 are integrally formed.

[0041] Specifically, a pole recess 11 is provided on one side of the cover body 10 close to the first pole portion 21 , and at least a portion of the insulating component 30 is disposed in the pole recess 11 .

[0042] The present application also provides a battery, comprising a battery cell and a cover plate assembly covering the battery cell, wherein the cover plate assembly is the above-mentioned cover plate assembly.

[0043] From the above description, it can be seen that the above embodiments of the present application achieve the following technical effects:

[0044] The cover assembly of the present application includes a cover body 10, a pole structure 20 and an insulating component 30. The cover body 10 is provided with a through hole 101, at least a portion of the pole structure 20 is passed through the through hole 101, and at least a portion of the insulating component 30 is sandwiched between the cover body 10 and the pole structure 20; wherein, the pole structure 20 has a first pole portion 21 located outside the cover body 10, and the first pole portion 21 has a pole outer peripheral surface 210; the insulating component 30 has an insulating flange portion 31 arranged around the first pole portion 21, and the insulating flange portion 31 has an insulating outer peripheral surface 310; the curved surface where the insulating outer peripheral surface 310 is located is located outside the curved surface where the pole outer peripheral surface 210 is located. In this way, the insulating component 30 wraps around the pole structure 20 and is stuck between the first pole portion 21 (welded aluminum block) and the cover body 10 (plain aluminum plate), separating the riveted aluminum block and the plain aluminum sheet. This provides insulation and effectively prevents short circuits and insulation failure during battery manufacturing. This structure prevents short circuits caused by aluminum wire conduction at the edges of the riveted aluminum block and the plain aluminum sheet during actual processing, which can lead to insulation failure.

[0045] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0046] Unless otherwise specifically stated, the relative arrangement of the parts and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to actual proportional relationships. The techniques, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values ​​should be interpreted as being merely exemplary and not as limitations. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0047] In the description of this application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of this application; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0048] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0049] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0050] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

DEPCT67 1. A custom-designed cover plate assembly consisting of: The frame of the cover plate (10) is provided with through holes (101); Polar structure (20), at least part of which is moving through the through hole (101); Insulating components (30), at least some of which are sandwiched between the frame. Cover plate (10) and terminal structure (20); where the polar structure (20) is arranged with the first polar part (21) positioned on The outer side of the cover plate (10) and the first terminal section (21) are provided with a circular surface. It is a terminal (210); the insulating part (30) is supplied together with the insulating flange part (31). Surrounding the first terminal section (21) and the insulating flange section (31) is a circular surface that is used as The insulator (310), the circular surface used as an insulator (310), is positioned on the curved surface located on the outside. of the curved surface on which the polar circumferential surface (210) is positioned 2. The cover plate assembly as per claim 1 is characterized in terms of its surface. The insulating ring (310) and the polarizing ring (210) are both ring-shaped.

3. The cover plate assembly as per claim 1 is characterized in terms of the terminals. Part one (21) has an outer terminal face (211) that is mounted on the outside of the cover plate body (10), One end of the insulating component (30) away from the cover plate body (10) has a surface. The insulating end (300) and the outer terminal face (211) are positioned on one side of the face. The insulating end (300) is 10 cm away from the cover plate body.

4. The cover plate assembly as per claim 3 is characterized in the following manner: The direction of expansion of the polar structure (20), the distance between the outer polar end surfaces (211) and The end surface used as insulation (300) is 0.1 mm to 0.3 mm.

5. The cover plate assembly as per claim 3 is characterized in the following manner: The direction of expansion of the polar structure (20), the distance between the outer polar end surfaces (211) and The insulating end surface (300) is 0.2 mm.

6. The cover plate assembly as per claim 3 is characterized in the following manner: The extended direction of the terminal structure (20), the insulating end surface (300) is set at position Equal to half to two-thirds of the height of the polar circumferential surface (210).

7. A set of cover plates pursuant to any one of claims 1-6, which has been made to have a specific design. In that the insulating component (30) is further incorporated with the insulating frame (32), It is sandwiched between the first terminal section (21) and the housing (10); the housing is used as an insulator. (32) is connected to the flange section which is used as insulation (31).

8. The cover plate assembly as per claim number 7 is unique in that: The thickness of the flange section used as insulation (31) is greater than or equal to the thickness of the frame used. Is it an insulator (32) or The flange used as insulation (31) is constructed completely with the insulating frame (32). or The thickness of the flange section used as insulation (31) is greater than or equal to the thickness of the body. The insulating frame (32) and the insulating flange (31) are constructed completely with the body. Insulating frame (32) 9. A set of cover plates pursuant to any one of claims 1-6, which has been made to have a specific design. In that one side of the cover plate (10) near the first pole section (21) is provided with a pole. The sink groove (11) and at least part of the insulating components (30) are arranged in the pole. Ngking Groove (11) 10. Battery, which consists of battery cells and a housing assembly that covers them. On battery cells that are uniquely designed in that the cover plate assembly is a plate assembly. Covers any one of claims 1 through 9.

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