Lower insulating part, battery cell cover plate and battery cell
By designing two parts of the pluggable lower insulator, the problems of easy swing and curling of the existing lower insulator are solved, and a more stable battery cell assembly process is achieved.
Patent Information
- Application Number
- CN202421635377.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-10
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-07-10
AI Technical Summary
The existing split-type lower insulating member easily swings and falls along the axis of the pole column, resulting in difficulty in assembling the battery cell.
A lower insulating member is designed, including a first part and a second part, respectively provided with a socket and a plug plate adapted to the socket. Through the plug-in of the plug plate and the socket, the two parts are connected into an integral part, increasing the limit and improving stability.
It effectively avoids the lower insulating member swinging and falling along the axis of the pole column, reducing the difficulty of assembling the battery cell and improving the assembly stability of the lower insulating member.
Smart Images
Figure CN223039097U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of battery cell structures, and in particular to a lower insulating member, a battery cell cover plate, and a battery cell. Background Art
[0002] The lower insulating member is one of the essential parts in a battery cell. It usually adopts a split structure (the lower insulating member includes at least two independent components and there is no connection relationship between the two components). That is, the existing lower insulating member has insufficient limitation. Thus, during the production and transportation of the cover plate, the existing split lower insulating member is prone to swing along the axis of the pole column and drop and warp, etc., resulting in difficult assembly of the battery cell. In addition, with the increasing requirement for the utilization rate of the integrated space of the battery cell, the length of the battery cell gradually increases. Correspondingly, the overall length of the lower insulating member also needs to increase accordingly, which will further highlight the above problems. Summary of the Utility Model
[0003] In view of this, the purpose of the present application is to provide a lower insulating member, a battery cell cover plate, and a battery cell to solve the problem that the existing split lower insulating member is prone to swing along the axis of the pole column and drop and warp, etc., which in turn leads to difficult assembly of the battery cell.
[0004] According to the above purpose, the present utility model provides a lower insulating member, wherein the lower insulating member includes a first part and a second part. The first part is provided with a socket, and the second part is provided with a plug board adapted to the socket. The plug board is correspondingly inserted into the socket so that the first part and the second part can be connected to form a whole.
[0005] Preferably, the connection direction of the first part and the second part forms the length direction of the lower insulating member; the socket is located at the second end of the first part close to the second part, and the plug board is located at the first end of the second part close to the first part.
[0006] Preferably, a first sunk groove is formed at the second end of the first part. The inner cavity of the first sunk groove penetrates through the top and the second end of the first part. A convex plate is provided at the bottom of the inner cavity of the first sunk groove, and the convex plate forms the socket.
[0007] Preferably, a second sunk groove is formed at the first end of the second part. The inner cavity of the second sunk groove penetrates through the top and the first end of the second part. The plug board is provided at the bottom of the inner cavity of the second sunk groove.
[0008] Preferably, the plug board includes a plugging section and a supporting section connected to each other. The plugging section is correspondingly adapted to the socket, and both ends of the supporting section in the extending direction are respectively connected to the plugging section and the second sunk groove.
[0009] Preferably, along the height direction of the lower insulating member, the thickness of the insertion section is formed as a, where a ≥ 0.5 mm; along the width direction of the lower insulating member, the width of the insertion section is formed as b, where b ≥ 5 mm;
[0010] When the plug board is correspondingly inserted into the socket, along the length direction of the lower insulating member, the distance between the end face of the convex plate close to the second part and the end face of the insertion section far from the second part is formed as c, where c ≥ 2 mm.
[0011] Preferably, along the length direction of the lower insulating member, the thickness of the support section is formed as d, where d ≥ 1 mm;
[0012] The joint area between the support section and the second part is not less than 3 mm 2 。
[0013] Preferably, along the length direction of the lower insulating member, the thickness of the convex plate is e, where e ≥ 0.5 mm;
[0014] The fitting clearance between the insertion section and the socket is formed as f, where 0.05 mm ≤ f ≤ 0.5 mm.
[0015] According to a second aspect of the present invention, a cell cover plate is provided, wherein the cell cover plate includes the lower insulating member as described above.
[0016] According to a third aspect of the present invention, a cell is provided, wherein the cell is provided with the cell cover plate as described above.
[0017] According to the lower insulating member, the cell cover plate and the cell of the present invention, the first part and the second part in the lower insulating member are respectively provided with a socket and a plug board adapted to the socket. Thus, by correspondingly inserting the plug board and the socket, the mutually independent first part and second part can be connected to form a whole, which can increase the limit on the lower insulating member. Furthermore, through the fixation of the pole column and the lower insulating member, the stability of the lower insulating member after assembly can be effectively improved, effectively avoiding the occurrence of situations such as the lower insulating member swinging along the axis of the pole column and falling and warping, and reducing the assembly difficulty of the cell.
[0018] To make the above objects, features and advantages of the present application more obvious and understandable, the following specific preferred embodiments are given in conjunction with the accompanying drawings and are described in detail as follows. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] To more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other relevant drawings can also be obtained based on these drawings.
[0020] Figure 1 is a schematic diagram of the lower insulating part according to an embodiment of the present utility model;
[0021] Figure 2 is an enlarged schematic diagram of part A according to an embodiment of the present utility model;
[0022] Figure 3 is a top view of the lower insulating part according to an embodiment of the present utility model;
[0023] Figure 4 is an enlarged schematic diagram of part B according to an embodiment of the present utility model;
[0024] Figure 5 is a sectional view of the lower insulating part in the Z direction according to an embodiment of the present utility model;
[0025] Figure 6 is an enlarged schematic diagram of part C according to an embodiment of the present utility model.
[0026] Icon: 10 - First part; 100 - First sinking groove; 101 - Convex plate; 11 - Second part; 110 - Insertion plate; 1100 - Insertion section; 1101 - Support section; 111 - Second sinking groove; 12 - Through hole; 13 - Reinforcing rib; 14 - Pole hole. Detailed implementation manners
[0027] The following detailed implementation manners are provided to help readers obtain a comprehensive understanding of the methods, devices, and / or systems described herein. However, after understanding the disclosure of the present application, various changes, modifications, and equivalents of the methods, devices, and / or systems described herein will be obvious. For example, the order of operations described herein is merely an example and is not limited to the order set forth herein. Rather, changes that will be obvious after understanding the disclosure of the present application can be made, except for operations that must occur in a specific order. In addition, descriptions of features known in the art may be omitted for the sake of clarity and conciseness.
[0028] The features described herein can be implemented in different forms and should not be construed as limited to the examples described herein. Rather, the examples described herein are provided only to illustrate some of the many possible ways of implementing the methods, devices, and / or systems described herein that will be obvious after understanding the disclosure of the present application.
[0029] Throughout the specification, when an element (such as, a layer, region, or substrate) is described as being "on" another element, "connected to" another element, "coupled to" another element, "above" another element, or "covering" another element, it can be directly "on" another element, "connected to" another element, "coupled to" another element, "above" another element, or "covering" another element, or there can be one or more other elements intervening therebetween. In contrast, when an element is described as being "directly on" another element, "directly connected to" another element, "directly coupled to" another element, "directly above" another element, or "directly covering" another element, there can be no other elements intervening therebetween.
[0030] As used herein, the term "and / or" includes any one of the listed related items and any combination of any two or more of them.
[0031] Although terms such as "first", "second", and "third" may be used herein to describe various components, elements, regions, layers, or parts, these components, elements, regions, layers, or parts are not limited by these terms. Rather, these terms are only used to distinguish one component, element, region, layer, or part from another. Thus, a first component, element, region, layer, or part described in an example herein may also be referred to as a second component, element, region, layer, or part without departing from the teachings of the example.
[0032] For ease of description, spatial relationship terms such as "above", "upper", "below", and "lower" may be used herein to describe the relationship of one element to another as shown in the figures. Such spatial relationship terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is flipped, an element described as "above" or "upper" relative to another element will then be "below" or "lower" relative to the other element. Thus, the term "above" includes both the orientations of "above" and "below" depending on the spatial orientation of the device. The device may also be positioned in other ways (e.g., rotated 90 degrees or in other orientations), and the spatial relationship terms used herein will be interpreted accordingly.
[0033] The terms used herein are for describing various examples only and are not intended to limit the present disclosure. Unless the context clearly indicates otherwise, the singular forms are also intended to include the plural forms. The terms "comprising", "including" and "having" enumerate the stated features, quantities, operations, components, elements and / or combinations thereof that exist, but do not preclude the existence or addition of one or more other features, quantities, operations, components, elements and / or combinations thereof.
[0034] Due to manufacturing techniques and / or tolerances, variations in the shapes shown in the drawings may occur. Accordingly, the examples described herein are not limited to the specific shapes shown in the drawings, but include changes in shape that occur during manufacturing.
[0035] The features of the examples described herein can be combined in various ways that will be apparent after understanding the disclosure of the present application. Moreover, although the examples described herein have various configurations, other configurations are possible, as will be apparent after understanding the disclosure of the present application.
[0036] According to the present utility model, a lower insulating member is provided, as Figures 1 to 6 shown, the lower insulating member in this embodiment includes a first part 10 and a second part 11 (independent of each other), and each of them is provided with a socket and a plug board 110 corresponding to and adapted to the socket. Thus, through the corresponding insertion of the plug board 110 into the socket, the first part 10 and the second part 11 that are independent of each other can be connected into a whole. It should be noted that the lower insulating member in this embodiment only includes the first part 10 and the second part 11, but is not limited thereto. For example, the lower insulating member may also be composed of three parts or four parts. As long as the parts of the lower insulating member can be connected through the following socket and plug board 110 to ensure the integrity of the lower insulating member. In the following, the structures and positional relationships of the above-mentioned parts will be described in detail.
[0037] In addition, as Figure 1 shown, in order to more clearly describe the structures and positional relationships of the parts, the length direction of the lower insulating member is set as the X direction (the length directions of the first part 10 and the second part 11 and their connection direction are all the X direction), the width direction of the lower insulating member is set as the Y direction (the width directions of the first part 10 and the second part 11 are also the Y direction), and the cover direction of the lower insulating member is set as the Z direction.
[0038] In this embodiment, as Figures 1 to 6As shown, along the X direction, the socket is located at the second end of the first part 10 close to the second part 11. Specifically, a first sunk groove 100 is formed at the second end of the first part 10. The first sunk groove 100 extends along the Z direction and protrudes from the bottom of the first part 10. Thus, when the lower insulating part is assembled at the corresponding position of the battery cell, the first sunk groove 100 can abut against the pole group, that is, play a role in limiting the pole group. In addition, the inner cavity of the first sunk groove 100 penetrates through the top and the second end of the first part 10. Multiple through holes 12 and reinforcing ribs 13 are formed at the bottom of its inner cavity. Through the through holes 12, it is convenient to discharge the high-pressure gas inside the housing. Through the reinforcing ribs 13, the structural strength of the lower insulating part can be improved.
[0039] Furthermore, in order to improve the rationality of the spatial layout, a convex plate 101 is arranged at the bottom of the inner cavity of the first sunk groove 100. In this embodiment, the convex plate 101 is flush with the end face of the second end of the first part 10. In this way, it is convenient for the insertion of the insertion plate 110, and at the same time, it is beneficial to the arrangement of the above-mentioned through holes 12 and reinforcing ribs 13. The convex plate 101 is formed into a cuboid plate structure, and the socket is formed at its center. Preferably, along the Y direction, the convex plate 101 is located at the center of the first sunk groove 100. In addition, along the X direction, the thickness of the convex plate 101 is e, e≥0.5mm, so as to ensure the connection strength between the first part 10 and the second part 11.
[0040] In this embodiment, as Figures 1 to 6 shown, similar to the above-mentioned first part 10, along the X direction, the insertion plate 110 is located at the first end of the second part 11 close to the first part 10. Specifically, a second sunk groove 111 is formed at the first end of the second part 11. The inner cavity of the second sunk groove 111 penetrates through the top and the first end of the second part 11, and multiple through holes 12 and reinforcing ribs 13 are also formed at the bottom of the inner cavity of the second sunk groove 111. Further, the insertion plate 110 is arranged at the bottom of the inner cavity of the second sunk groove 111. The insertion plate 110 includes a plugging section 1100 and a supporting section 1101 connected to each other. The plugging section 1100 is correspondingly adapted to the above-mentioned socket. The two ends of the supporting section 1101 along the Z direction are respectively connected to the plugging section 1100 and the second sunk groove 111.
[0041] In order to ensure the insertion strength of the insertion plate 110 to achieve reliable insertion, along the Z direction, the thickness of the plugging section 1100 is formed as a, a≥0.5mm; along the Y direction, the width of the plugging section 1100 is formed as b, b≥5mm. In addition, when the insertion plate 110 is correspondingly inserted into the socket, along the X direction, the distance between the end face of the convex plate 101 close to the second part 11 and the end face of the plugging section 1100 away from the second part 11 is formed as c, c≥2mm, so as to effectively avoid the occurrence of situations such as the insertion plate 110 coming out.
[0042] In order to further improve the connection stability between the first part 10 and the second part 11, along the X direction, the thickness of the support section 1101 is formed as d, d≥1 mm, and the joint area between the support section 1101 and the second part 11 is not less than 3 mm 2 ; in addition, the fitting clearance between the insertion section 1100 and the socket is formed as f, 0.05 mm ≤ f ≤ 0.5 mm.
[0043] In this embodiment, in order to improve the smoothness when the plug board 110 is inserted into the socket, a guide bevel angle and a guide fillet are formed at the end of the plug board 110 away from the second part 11. In addition, after the first part 10 and the second part 11 are connected, the first sink 100 and the second sink 111 can jointly form the sink of the lower insulating part, so as to facilitate the limiting of the electrode group. Further, pole holes 14 corresponding to the pole posts are formed at the first end of the first part 10 and the second end of the second part 11. After the first part 10 and the second part 11 are connected, the stability of the assembly of the lower insulating part can be improved through the corresponding fit between the pole posts and the pole holes 14.
[0044] According to the lower insulating part of the present invention, a socket and a plug board 110 adapted to the socket are respectively provided on the first part 10 and the second part 11 of the lower insulating part. Thus, by correspondingly inserting the plug board 110 and the socket, the mutually independent first part 10 and the second part 11 can be connected to form an integral body, so that the limiting of the lower insulating part can be increased. Furthermore, through the fixation of the pole posts and the lower insulating part, the stability of the lower insulating part after assembly can be effectively improved, and situations such as the lower insulating part swinging along the axis of the pole post and dropping and warping can be effectively avoided, reducing the assembly difficulty of the battery cell.
[0045] According to the second aspect of the present invention, a battery cell cover plate is provided, wherein the battery cell cover plate includes the lower insulating part as described above.
[0046] According to the third aspect of the present invention, a battery cell is provided, wherein the battery cell is provided with the battery cell cover plate as described above.
[0047] Finally, it should be noted that the above-described embodiments are only specific implementation manners of the present application, used to illustrate the technical solutions of the present application, rather than limiting it. The protection scope of the present application is not limited thereto. Although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that any person skilled in the technical field of the present application can still modify the technical solutions recorded in the foregoing embodiments, or can easily think of changes, or perform equivalent replacements on some of the technical features; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.
Claims
1. A lower insulating member, characterized in that: The lower insulating member includes a first part and a second part, the first part is provided with a socket, the second part is provided with a plug board adapted to the socket, the plug board is plugged into the socket correspondingly, so that the first part and the second part can be connected to form a whole.
2. The lower insulator according to claim 1, characterized in that: The connection direction of the first part and the second part is formed as the length direction of the lower insulating member; the socket is located at the second end of the first part close to the second part, and the plug is located at the first end of the second part close to the first part.
3. The lower insulator according to claim 2, characterized in that: A first sink is formed at the second end of the first part, the inner cavity of the first sink runs through the top and the second end of the first part, a convex plate is provided at the bottom of the inner cavity of the first sink, and the socket is formed on the convex plate.
4. The lower insulator according to claim 3, characterized in that: A second sink is formed at the first end of the second part, the inner cavity of the second sink runs through the top and the first end of the second part, and the insert plate is arranged at the bottom of the inner cavity of the second sink.
5. The lower insulator according to claim 4, characterized in that: The plug board includes a plug-in section and a supporting section connected to each other, the plug-in section is adapted to correspond to the socket, and two ends of the supporting section in the extending direction are respectively connected to the plug-in section and the second sink.
6. The lower insulator according to claim 5, characterized in that: Along the height direction of the lower insulating member, the thickness of the plug-in section is formed to be a, a≥0.5 mm; along the width direction of the lower insulating member, the width of the plug-in section is formed to be b, b≥5 mm; When the plug board is plugged into the socket, along the length direction of the lower insulating member, the distance between the end surface of the protruding plate close to the second part and the end surface of the plug section away from the second part is formed to be c, c≥2mm.
7. The lower insulator according to claim 5, characterized in that: Along the length direction of the lower insulating member, the thickness of the support section is formed to be d, d≥1mm; The joint area between the support section and the second part is not less than 3mm 2 .
8. The lower insulator according to claim 5, characterized in that: Along the length direction of the lower insulating member, the thickness of the convex plate is e, e≥0.5mm; The matching clearance between the plug-in section and the socket is formed as f, 0.05mm≤f≤0.5mm.
9. A battery cell cover, characterized in that: The cell cover plate includes the lower insulating member according to any one of claims 1 to 8.
10. A battery cell, characterized in that: The battery cell is provided with the battery cell cover plate as claimed in claim 9.