Pole piece and rolling device
By setting up a continuous embossing structure in the pole ear region and the pole sheet main area, the problem of easy discounting of the pole ear region during the rolling process is solved, and the uniformity and smoothness of the pole ear region and the pole sheet main area are achieved. .
Patent Information
- Application Number
- CN202420437650.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-06
- Publication Date
- 2025-02-25
- Estimated Expiration
- 2034-03-06
AI Technical Summary
In the prior art, the polar ear zone is prone to discount or crescents during die-cutting and rolling, and the embossing structure of the existing design is limited in effect, which cannot effectively solve the problem of discounted polar ear zone caused by waves.
A pole piece is designed, and the pole ear is divided into the first area and the second area, and an embossed structure is provided in the third area of the pole ear area and the pole body area. The embossed structures of the second area and the third area are the same. This achieves the continuity of the embossed structure and unifies the rolling state of the pole ear region and the pole sheet main region.
By setting up a continuous embossing structure, preventing the pole ear region from being discounted or crescent during the rolling process, ensuring the flatness of the pole ear region, releasing stress at the root of the pole ear region, reducing the degree of waves between the pole plate main region and reducing the degree of waves between the pole plate main region , realize a smooth rolling process.
Smart Images
Figure CN222530450U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of pole pieces, and in particular to a pole piece and a rolling device. Background Art
[0002] The pole piece is divided into the pole piece main body area and the pole ear area. During the die-cutting and rolling process, the pole ear area is prone to folding or crescents appearing in the pole ear area. In view of this situation, there is a design in the prior art that embosses are set on the pole ear area to avoid folding of the pole ear or the appearance of crescents, but this design has a relatively small effect because the pole piece material will produce waves after rolling. This wave will intermittently approach or move away from the roller during the rolling process, so the pole ear area may also be folded. Utility Model Content
[0003] The main purpose of the utility model is to provide a pole piece and a rolling device to solve the problem that the pole ear area is easily folded in the prior art.
[0004] In order to achieve the above-mentioned purpose, according to one aspect of the utility model, a pole piece is provided, including a pole piece main body area and a pole lug area, the pole lug area is located on at least one side of the pole piece main body area, the pole lug area includes a first area and a second area, the second area is connected to the pole piece main body area, the first area has a first embossing structure, the pole piece main body area includes a third area adjacent to the second area, the second area and the third area have a second embossing structure, and the first embossing structure and the second embossing structure are the same or different.
[0005] Furthermore, along the protruding direction of the pole lug region, the first region and the second region are arranged in sequence, and a boundary line between the first region and the second region is parallel to a boundary line between the second region and the pole piece main body region.
[0006] Furthermore, the pole ear region is a trapezoidal structure, the short top side of the trapezoidal structure is located in the first region, and the long bottom side of the trapezoidal structure is located in the second region and connected to the pole piece main body region.
[0007] Furthermore, along the protruding direction of the tab region, the protruding distance of the second region is 1 / 3 to 1 / 2 of the overall protruding distance of the tab region.
[0008] Further, along the protruding direction of the pole lug region, a projection of the third region on the boundary line between the pole lug region and the pole piece main body region is located within the boundary line, and / or a projection of the second region on the boundary line is located within the boundary line.
[0009] Furthermore, along the length direction of the pole piece main area, the width of the third region is equal to the width of the boundary line.
[0010] Furthermore, the first embossing structure and / or the second embossing structure is continuous embossing or discontinuous embossing.
[0011] Furthermore, the continuous embossing includes at least one of a curved strip shape, a straight strip shape, and a broken line shape, and the discontinuous embossing includes at least one of a round dot shape, an elliptical dot shape, and a square dot shape.
[0012] According to another aspect of the utility model, a rolling device is provided, which is used to process the above-mentioned pole piece, and the rolling device includes a first cylindrical body portion and a second cylindrical body portion axially connected, the first cylindrical body portion has a first embossing model matching the first embossing structure, and the second cylindrical body portion has a second embossing model matching the second embossing structure.
[0013] Further, the first barrel portion of the rolling device is eccentrically arranged relative to the axis of the second barrel portion, and a portion of the circumferential side surface of the first barrel portion is axially aligned with the circumferential side surface of the second barrel portion.
[0014] By applying the technical solution of the utility model, an embossing structure is arranged in the pole lug area and at least a part of the pole piece main body area (i.e., the third area), wherein the pole lug area is divided into a first area and a second area, the first area and the second area can be provided with the same or different embossing structures, and the second area and the third area of the pole lug area are provided with the same embossing structure. In this way, since the third area is adjacent to the second area, the second embossing structure can extend directly from the second area to the third area, thereby ensuring the continuity of the second embossing structure in the second area and the third area, and can better achieve the unification of the rolling state of the pole lug area and the pole piece main body area, thereby preventing the generation of folds or crescents in the rolling process of the pole lug area, and ensuring the flatness of the processing of the pole lug area; and can release the stress at the root of the pole lug area, reduce the degree of wave between the pole lug area and the pole piece main body area, and better make the state of the pole lug area consistent with the state of the pole piece main body area, thereby achieving smooth rolling without folds in the pole lug area and crescents in the pole lug area. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:
[0016] Figure 1 The schematic diagram of the structure of the pole piece of the utility model is shown;
[0017] Figure 2 A schematic diagram of the structure during pole piece processing is shown.
[0018] The above drawings include the following reference numerals:
[0019] 10. Pole piece main body area; 11. Third area; 20. Pole ear area; 21. First area; 22. Second area; 31. First cylindrical part; 32. Second cylindrical part. DETAILED DESCRIPTION
[0020] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.
[0021] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.
[0022] In the present invention, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directional words are not used to limit the present invention.
[0023] In order to solve the problem in the prior art that the pole ear area is easily folded, the utility model provides a pole piece and a rolling device.
[0024] like Figure 1 and Figure 2 A pole piece shown includes a pole piece main body area 10 and a pole lug area 20; the pole lug area 20 is located on at least one side of the pole piece main body area 10, the pole lug area 20 includes a first area 21 and a second area 22, the second area 22 is connected to the pole piece main body area 10, the first area 21 has a first embossed structure, the pole piece main body area 10 includes a third area 11 adjacent to the second area 22, the second area 22 and the third area 11 have a second embossed structure, and the first embossed structure and the second embossed structure are the same or different. In this embodiment, the third area 11 can be a partial area of the pole piece main body area 10, or the entire pole piece main body area; the pole lug area 20 can be located on one side or both sides of the pole piece main body area 10, and the number of pole lug areas 20 on each side can be one or more.
[0025] In this embodiment, an embossing structure is provided in the tab area 20 and at least a part of the pole sheet main body area 10 (i.e., the third area 11), wherein the tab area 20 is divided into a first area 21 and a second area 22, the first area 21 and the second area 22 can be provided with the same or different embossing structures, and the second area 22 of the tab area 20 and the third area 11 are provided with the same embossing structure. In this way, since the third area 11 is adjacent to the second area 22, the second embossing structure can be directly extended from the second area 22 to the third area 11, thereby ensuring the second The continuity of the second embossing structure in region 22 and the third region 11 can better achieve the unification of the rolling states of the pole lug area 20 and the pole piece main body area 10, thereby preventing the pole lug area from being folded or crescent-shaped during the rolling process, and ensuring the smoothness of the pole lug area processing; and it can release the stress at the root of the pole lug area, reduce the degree of wave between the pole lug area 20 and the pole piece main body area 10, and better make the state of the pole lug area 20 consistent with the state of the pole piece main body area 10, thereby achieving smooth rolling without folds in the pole lug area and crescent-shaped in the pole lug area.
[0026] like Figure 1 As shown, in this embodiment, along the protruding direction of the pole ear region 20 (that is, the direction extending from the side of the pole ear region 20 close to the pole piece main body region 10 to the side of the pole ear region 20 away from the pole piece main body region 10, that is, Figure 1 In the direction from bottom to top in the figure), the first area 21 and the second area 22 are arranged in sequence, that is, the first area 21 mentioned in this embodiment is essentially the head of the pole ear area 20, that is, the part of the pole ear area 20 away from the pole piece main body area 10, and the second area 22 is the root of the pole ear area 20, that is, the part of the pole ear area 20 close to the pole piece main body area 10 and connected to the pole piece main body area 10. In this way, the second area 22 at the root of the pole ear area 20 and the third area 11 of the pole piece main body area 10 adopt the same second embossing structure, so as to ensure the consistency of the embossing of the two, and then ensure the consistency of the force of the two, and avoid the pole ear area 20 from bending at the position connected to the pole piece main body area 10. At the same time, in this embodiment, the boundary line between the first area 21 and the second area 22 is set parallel to the boundary line between the second area 22 and the pole piece main body area 10. On the one hand, the overall structure is simpler and more beautiful. On the other hand, the parallel setting can make the embossing of all areas completed at one time by using a roller pressing device during the embossing process, without the need for secondary rework, simplifying the processing difficulty and process. The boundary line between the second region 22 and the pole piece main region 10 is a line segment where the second region 22 and the pole piece main region 10 intersect.
[0027] More specifically, the tab area 20 is a trapezoidal structure, the short top side of the trapezoidal structure is located in the first area 21, the long bottom side of the trapezoidal structure is located in the second area 22 and connected to the pole piece main area 10. The trapezoidal tab area 20 can meet the use requirements of the pole piece, and the connection length between the tab area 20 and the pole piece main area 10 can be increased by connecting the long bottom side with the pole piece main area 10, thereby increasing the connection strength and reducing the possibility of buckling.
[0028] Preferably, along the protruding direction of the tab area 20, the protruding distance of the second area 22 is 1 / 3 to 1 / 2 of the overall protruding distance of the tab area 20, thereby ensuring that the second area 22 has a certain width. After the second area 22 and the third area 11 are embossed together, they have a certain strength to prevent the tab from being folded.
[0029] In this embodiment, the pole piece main body area 10 is not entirely provided with the second embossing structure, but only a part of the area is provided with the second embossing structure. Specifically, the third area 11 is only a part of the pole piece main body area 10, so that the cost and difficulty of processing can be reduced, and at the same time, the effect of preventing the pole ear area 20 from being folded can be ensured. Further, along the protruding direction of the pole ear area 20, the projection of the third area 11 on the boundary line between the pole ear area 20 and the pole piece main body area 10 is located within the boundary line, and / or, the projection of the second area 22 on the boundary line is located within the boundary line, that is, the projections of the third area 11 and the second area 22 are both located within the range of the connection between the pole ear area 20 and the pole piece main body area 10, so that the anti-folding effect of the second embossing structure can act more accurately on the connection where folding is prone to occur, thereby improving the anti-folding effect. Which of the above two settings is specifically selected or both can be selected according to needs.
[0030] Preferably, along the length direction of the pole piece main area 10 (that is, perpendicular to the protruding direction of the pole ear area 20, i.e. Figure 1 The width of the third region 11 is equal to the width of the dividing line, so that the third region 11 is completely aligned with the dividing line, and the third region 11 can cover the entire connection without any redundant parts, thereby ensuring the anti-folding effect of the second embossing structure and reducing the size of the embossed area, which is conducive to reducing costs. The length of the third region 11 along the protruding direction of the tab area 20 can be set accordingly as needed, without special requirements, as long as a certain length can be guaranteed to ensure the anti-folding effect.
[0031] Of course, in addition to the second embossing structure being provided only in the third area 11 as mentioned above, the second embossing structure may also be provided in all areas of the pole piece main body area 10 .
[0032] Optionally, the specific embossing types of the first embossing structure and the second embossing structure can be selected accordingly as needed, and the first embossing structure and / or the second embossing structure can be selected as continuous embossing or discontinuous embossing as needed. Among them, the continuous embossing can include at least one of curved strips, straight strips, and broken lines, and the discontinuous embossing includes at least one of round dots, elliptical dots, and square dots. In addition to the above-mentioned shapes, other shapes and types of embossing can also be selected, such as alternating dot and line shapes.
[0033] like Figure 2 As shown, this embodiment also provides a rolling device, which is used to process the above-mentioned pole piece. The rolling device includes an axially connected first barrel portion 31 and a second barrel portion 32, the first barrel portion 31 has a first embossing model that matches the first embossing structure, and the second barrel portion 32 has a second embossing model that matches the second embossing structure. The first embossing structure and the second embossing structure can be processed simultaneously by rolling the rolling device over the surface of the pole piece. When the first embossing structure is the same as the second embossing structure, the first barrel portion 31 and the second barrel portion 32 can have the same embossing model respectively; when the first embossing structure is different from the second embossing structure, the first barrel portion 31 and the second barrel portion 32 can have different embossing models respectively, and different embossing can be completed at the same time without changing the mold and secondary embossing, making embossing more convenient and quick.
[0034] The pole lug area 20 of the present embodiment is arranged on the side of the pole piece main body area 10, and there are generally multiple pole lug areas 20, and each pole lug area 20 is arranged at intervals along the side of the pole piece main body area 10. Therefore, considering the intervals formed between the pole lugs, the first barrel portion 31 of the rolling device of the embodiment is eccentrically arranged relative to the axis of the second barrel portion 32, and part of the circumferential side surface of the first barrel portion 31 is axially aligned with the circumferential side surface of the second barrel portion 32. In this way, when the rolling device performs embossing operation, when the pole lug area 20 is conveyed to the first barrel portion 31, the first barrel portion 31 contacts the first area 21 of the pole lug area 20, thereby realizing the processing of the first embossing structure, and when the pole lug area 20 is conveyed out of the processing position of the first barrel portion 31, the first barrel portion 31 rotates to a position away from the pole lug area 20, thereby forming a gap between the first barrel portion 31 and the pressing roller, so that the processed pole lug area 20 can be smoothly conveyed to avoid being affected and causing folding. Of course, the first barrel portion 31 and the second barrel portion 32 may also be coaxial and have the same diameter.
[0035] It should be noted that, the multiple in the above embodiments refers to at least two.
[0036] From the above description, it can be seen that the above embodiments of the utility model achieve the following technical effects:
[0037] 1. Solve the problem that the tab area is easily folded in the prior art;
[0038] 2. Realize the unification of the rolling state of the pole ear area and the pole body area, so as to prevent the pole ear area from being folded or crescent-shaped during the rolling process, and ensure the flatness of the pole ear area processing;
[0039] 3. The second area and the main area of the pole piece are embossed at the same time, which can release the stress at the root of the pole ear area, reduce the degree of wave between the pole ear area and the main area of the pole piece, and better make the state of the pole ear area consistent with the state of the pole piece main area, thereby achieving smooth rolling without folding of the pole ear area and crescent of the pole ear area.
[0040] Obviously, the embodiments described above are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.
[0041] 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, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.
[0042] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.
[0043] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A pole piece, characterized in that: include: A pole piece main body region (10); A pole lug region (20), the pole lug region (20) being located on at least one side of the pole piece main body region (10), the pole lug region (20) comprising a first region (21) and a second region (22), the second region (22) being connected to the pole piece main body region (10), the first region (21) having a first embossing structure, the pole piece main body region (10) comprising a third region (11) adjacent to the second region (22), the second region (22) and the third region (11) having a second embossing structure, and the first embossing structure and the second embossing structure being the same or different.
2. The pole piece according to claim 1, characterized in that: Along the protruding direction of the pole lug region (20), the first region (21) and the second region (22) are arranged in sequence, and the boundary between the first region (21) and the second region (22) is parallel to the boundary between the second region (22) and the pole piece main body region (10).
3. The pole piece according to claim 2, characterized in that: The pole lug region (20) is in a trapezoidal structure, the short top side of the trapezoidal structure is located in the first region (21), and the long bottom side of the trapezoidal structure is located in the second region (22) and connected to the pole piece main body region (10).
4. The pole piece according to claim 1, characterized in that: Along the protruding direction of the tab region (20), the protruding distance of the second region (22) is 1 / 3 to 1 / 2 of the overall protruding distance of the tab region (20).
5. The pole piece according to claim 1, characterized in that: Along the protruding direction of the pole lug area (20), the projection of the third area (11) on the boundary line between the pole lug area (20) and the pole piece main body area (10) is located within the boundary line, and / or the projection of the second area (22) on the boundary line is located within the boundary line.
6. The pole piece according to claim 5, characterized in that: Along the length direction of the pole piece main body region (10), the width of the third region (11) is equal to the width of the dividing line.
7. The pole piece according to claim 1, characterized in that: The first embossed structure and / or the second embossed structure is / are continuous embossing or discontinuous embossing.
8. The pole piece according to claim 7, characterized in that: The continuous embossing includes at least one of a curved strip shape, a straight strip shape, and a broken line shape, and the discontinuous embossing includes at least one of a round dot shape, an elliptical dot shape, and a square dot shape.
9. A rolling device, characterized in that: The rolling device is used for processing the pole piece according to any one of claims 1 to 8, and the rolling device comprises an axially connected first cylindrical portion (31) and a second cylindrical portion (32), wherein the first cylindrical portion (31) has a first embossing model matching the first embossing structure, and the second cylindrical portion (32) has a second embossing model matching the second embossing structure.
10. The rolling device according to claim 9, characterized in that: The first cylindrical portion (31) is eccentrically arranged relative to the axis of the second cylindrical portion (32), and a portion of the circumferential side surface of the first cylindrical portion (31) is axially aligned with the circumferential side surface of the second cylindrical portion (32).