Positioning lower die and die structure
The mechanical positioning of the lower die-cutting mold solves the problem of manual positioning error in semi-automatic electrode die-cutting machines, realizing a highly efficient and automated die-cutting process and improving the quality and efficiency of lithium-ion battery production.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGZHOU GREAT POWER ENERGY CO LTD
- Filing Date
- 2025-06-26
- Publication Date
- 2026-06-26
AI Technical Summary
In the current lithium-ion battery manufacturing process, semi-automatic electrode die-cutting machines rely on manual positioning, resulting in high electrode scrap rates, low production efficiency, and difficulty in ensuring sample consistency.
The die-cutting mechanism employs a positioning die structure, comprising a template body, mounting components, positioning components, and elastic components. Die-cutting is achieved through mechanical positioning, while the deformation and recovery of the elastic components prevent interference from the positioning components, thereby improving the degree of automation.
This improved production quality and efficiency, reduced electrode scrap rate, ensured sample consistency, and lowered preparation and installation costs.
Smart Images
Figure CN224407886U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of electrode processing, and more specifically, to a positioning die and die structure. Background Technology
[0002] In the manufacturing process of lithium-ion batteries, the rolling process typically employs two methods: continuous rolling and single-piece rolling. In research laboratories and some enterprise production environments, single-piece rolling is commonly used, or the electrode sheets after continuous rolling are cut into smaller pieces and then die-cut into shape.
[0003] Semi-automatic electrode die-cutting machines are key equipment in the lithium-ion battery manufacturing process, primarily used for electrode die-cutting. This equipment boasts advantages such as high operational flexibility, suitability for small-batch, multi-variety production, and relatively low cost. However, its die-cutting operation relies on manual positioning, which can easily lead to product scrap due to human error. Specifically, it has the following drawbacks:
[0004] 1. The manual visual ranging method results in a high rate of electrode scrapping;
[0005] 2. The die-cutting position of each electrode sheet needs to be manually determined, resulting in low production efficiency;
[0006] 3. It is difficult to guarantee the consistency of samples processed by manual visual inspection. Utility Model Content
[0007] The purpose of this application is to provide a positioning die and die structure that can achieve mechanical positioning, improve production quality and efficiency, and ensure sample consistency.
[0008] In a first aspect, this utility model provides a positioning lower die, which includes a template body, a mounting component, a positioning component, and an elastic component. The template body has a die-cutting position and a mounting groove. The mounting component is placed in the mounting groove and fixedly connected to the template body. The mounting component has a mounting hole. The positioning component has a positioning body and a positioning part. The positioning part is integrally formed with the positioning body. The shape of the positioning part is adapted to the mounting hole, and the positioning part passes through the mounting hole and extends to one side of the mounting component. The positioning body is located on the other side of the mounting component. On a projection plane perpendicular to the die-cutting direction, the projected area of the positioning part is smaller than the projected area of the positioning body. The elastic component is installed between the positioning component and the template body along the die-cutting direction. When the elastic component deforms, the height of the positioning part is equal to the height of the template body. When the elastic component recovers its deformation, the height of the positioning part is higher than the height of the template body.
[0009] In an optional implementation, the height of the mounting component is equal to or lower than the height of the template body.
[0010] In an optional embodiment, the mounting component is further provided with a connecting hole located at the bottom of the mounting hole, the connecting hole and the mounting hole forming a stepped hole, and the positioning body abutting against the stepped surface of the stepped hole.
[0011] In an optional embodiment, the positioning die further includes two fasteners, and the mounting component is also provided with two through holes. The two through holes are located at both ends of the mounting component, and the stepped hole is located between the two through holes. One fastener passes through one through hole to lock the mounting component and the template body.
[0012] In an optional embodiment, the template body is further provided with two strip holes, one strip hole and one through hole are provided correspondingly, and the length direction of each strip hole is parallel to the width direction of the template body.
[0013] In an optional embodiment, the number of die-cutting positions is multiple, and the multiple die-cutting positions are spaced apart along the length direction of the template body, and the length of the positioning member is adapted to the total length of the multiple die-cutting positions.
[0014] In an optional embodiment, each of the die-cutting positions includes a body die-cutting position and an electrode die-cutting position. The body die-cutting position and the electrode die-cutting position are connected. The body die-cutting position and the electrode die-cutting position are arranged along the width direction of the template body, and the electrode die-cutting position is located between the body die-cutting position and the positioning member.
[0015] In an optional embodiment, the template body is provided with a positioning post, the positioning post is located at the bottom of the mounting groove, and the elastic element is sleeved on the positioning post.
[0016] In an optional implementation, there are two positioning posts, which are spaced apart.
[0017] Secondly, this utility model provides a die-cutting structure, which includes an upper die-cutting die and a positioning lower die-cutting die as described in the foregoing embodiments, wherein the upper die-cutting die and the positioning lower die-cutting die are adapted to each other.
[0018] Compared to existing technologies, the beneficial effects of this application are:
[0019] This application achieves mechanical positioning of die-cutting by installing mounting parts, positioning parts, and elastic parts onto the template body, thereby improving production quality and efficiency, ensuring sample consistency, and utilizing the deformation and recovery capabilities of the elastic parts to avoid interference from the positioning parts in the die-cutting process, resulting in a high degree of automation. Attached Figure Description
[0020] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0021] Figure 1 The following are schematic diagrams illustrating the die-cutting of the positioning die and the empty electrode foil in some embodiments;
[0022] Figure 2 A three-dimensional structural schematic diagram of the positioning lower die is shown in some embodiments;
[0023] Figure 3 A three-dimensional structural schematic diagram of the positioning die in some embodiments is shown (mounting and positioning components are omitted).
[0024] Figure 4 Partial planar schematic diagrams of the mounting components are shown in some embodiments;
[0025] Figure 5 It shows Figure 4 Schematic diagram of the AA section;
[0026] Figure 6 A planar schematic diagram of the positioning of the lower die-cutting mold is shown in some embodiments (mounting and positioning components are omitted);
[0027] Figure 7 A schematic diagram of the connection between the positioning element and the elastic element in some embodiments is shown.
[0028] Explanation of key component symbols:
[0029] 10-Locking lower die; 100-Template body; 110-Die-cutting position; 111-Body die-cutting position; 112-Electrode ear die-cutting position; 120-Mounting groove; 130-Strip hole; 140-Locking post; 200-Mounting component; 210-Mounting hole; 220-Connecting hole; 230-Through hole; 300-Locking component; 310-Locking body; 320-Locking part; 400-Elastic component; 20-Electrode blank foil. Detailed Implementation
[0030] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.
[0031] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.
[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.
[0033] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0034] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0035] Example 1
[0036] Please see Figure 1 This embodiment is applicable to placing the blank electrode foil 20 into a semi-automatic die-cutting machine for die-cutting to obtain an electrode. It can be understood that the blank electrode foil 20 is a roll material, and the blank electrode foil 20 has various sizes and specifications, with different sizes and specifications of blank electrode foil 20 having different widths.
[0037] Please see Figures 1 to 3 This embodiment provides a positioning lower die 10, which includes a template body 100, an mounting component 200, a positioning component 300, and an elastic component 400.
[0038] The template body 100 is a cuboid structure with length, width and height. During die cutting, the empty electrode foil 20 is unwound and placed on the template body 100. The length direction of the empty electrode foil 20 is the same as the length direction of the template body 100, and the width direction of the empty electrode foil 20 is the same as the width direction of the template body 100.
[0039] Understandably, after each die-cutting cycle, the roll can be unwound again to begin the next die-cutting process, reducing waiting time and increasing die-cutting efficiency.
[0040] The template body 100 is provided with die-cutting positions 110 and mounting grooves 120. There are multiple die-cutting positions 110, which are arranged at intervals along the length of the template body 100. This embodiment uses four die-cutting positions 110 as an example. Each die-cutting can produce four electrode sheets, which further improves the die-cutting efficiency of this embodiment.
[0041] Each die-cutting position 110 includes a body die-cutting position 111 and an electrode die-cutting position 112. The body die-cutting position 111 and the electrode die-cutting position 112 are connected. The body die-cutting position 111 and the electrode die-cutting position 112 are arranged along the width direction of the template body 100, and the electrode die-cutting position 112 is located between the body die-cutting position 111 and the positioning member 300.
[0042] In this embodiment, the wide side of the die-cutting position 111 of the body can be set to be parallel to the long side of the template body 100.
[0043] Please see Figure 4 and Figure 5 The image shows half of the mounting member 200, which is symmetrically arranged about a centerline. The mounting member 200 has mounting holes 210, and its height is equal to or lower than the height of the template body 100. During die-cutting, the height of the mounting member 200 is designed to prevent interference with the die-cutting process.
[0044] In this embodiment, the mounting component 200 is further provided with a connecting hole 220, which is located at the bottom of the mounting hole 210, and the connecting hole 220 and the mounting hole 210 form a stepped hole.
[0045] Please see Figures 3 to 5 The mounting component 200 is placed in the mounting groove 120 and fixedly connected to the template body 100. The fixed connection between the mounting component 200 and the template body 100 includes, but is not limited to, fastening with fasteners or fixing by cylinder, etc. Here, the fastening method is used as an example.
[0046] The positioning die 10 also includes two fasteners (not shown in the figure), and the mounting part 200 is also provided with two through holes 230. The two through holes 230 are located at both ends of the mounting part 200, and the stepped hole is located between the two through holes 230. A fastener is inserted through one through hole 230 to lock the mounting part 200 and the template body 100.
[0047] Fasteners are configured as bolts and nuts.
[0048] Please see Figure 5 and Figure 6 To improve the applicability of this embodiment, the template body 100 is also provided with two strip holes 130, one strip hole 130 and one through hole 230 are correspondingly provided, and the length direction of each strip hole 130 is parallel to the width direction of the template body 100.
[0049] Please see Figure 1 , Figure 2 and Figure 6 Based on the size of the blank electrode foil 20, in this embodiment, by moving the position of the mounting component 200, the fastener can be installed at any position of the strip hole 130 to control the die-cutting position 110, thereby meeting the die-cutting requirements of blank electrode foil 20 of different widths, making it more applicable and more compatible.
[0050] The length of the positioning component 300 is adapted to the total length of the multiple die-cutting positions 110, ensuring that the multiple die-cutting positions 110 can be well positioned and reducing die-cutting errors.
[0051] Of course, the length of the positioning element 300 can be longer than the total length of the multiple die-cutting positions 110, or the length of the positioning element 300 can be shorter than the total length of the multiple die-cutting positions 110. The positioning element 300 only needs to ensure that after the electrode blank foil 20 is placed on the template body 100, the long side of the electrode blank foil 20 is parallel to the wide side of the body die-cutting position 111.
[0052] from Figure 2 As can be seen, the height of the positioning component 300 is higher than the height of the template body 100 [Lin Baoxi 1], at which point the positioning and placement work can be carried out.
[0053] Please see Figures 5 to 7 The positioning component 300 is provided with a positioning body 310 and a positioning part 320. The positioning part 320 is integrally formed with the positioning body 310. The shape of the positioning part 320 is adapted to the mounting hole 210. The positioning part 320 passes through the mounting hole 210 and extends to one side of the mounting component 200. The positioning body 310 is located on the other side of the mounting component 200.
[0054] The positioning body 310 abuts against the stepped surface of the stepped hole, that is, the positioning body 310 and the positioning part 320 are set in a stepped manner. In some other embodiments, the mounting member 200 may not have the connecting hole 220, and the positioning body 310 abuts directly against the lower surface of the mounting member 200.
[0055] Specifically, on the projection plane perpendicular to the die-cutting direction, the projected area of the positioning part 320 is smaller than the projected area of the positioning body 310. This embodiment utilizes the area difference between the positioning part 320 and the positioning body 310. When the positioning part 320 passes through the mounting hole 210, the positioning body 310 is blocked on the lower surface of the mounting component 200, thus achieving the assembly of the positioning component 300 and the mounting component 200. The structure is simple, requires no additional fixing measures, and reduces assembly difficulty.
[0056] The elastic element 400 is installed between the positioning element 300 and the template body 100 along the die-cutting direction. In this embodiment, the elastic element 400 can be configured as a compression spring.
[0057] The template body 100 is provided with a positioning post 140, which is located at the bottom of the mounting groove 120. The elastic element 400 is sleeved on the positioning post 140. The positioning post 140 provides a good positioning function for the elastic element 400. On the one hand, during assembly, the positioning post 140 provides a positioning mark for the elastic element 400. On the other hand, the positioning post 140 can prevent the elastic element 400 from shifting during long-term use.
[0058] In this embodiment, two positioning posts 140 can be set, with the two positioning posts 140 spaced apart. The setting of two positioning posts 140 can improve the installation stability and reliability of the positioning component 300.
[0059] When the elastic element 400 deforms, the height of the positioning part 320 is equal to the height of the template body 100. When the elastic element 400 returns to its original shape, the height of the positioning part 320 is higher than the height of the template body 100. This embodiment utilizes the ability of the elastic element 400 to deform and return to its original shape, avoiding interference between the positioning part 300 and the die-cutting process, resulting in a high degree of automation.
[0060] During assembly, the positioning part 300 is first inserted into the stepped hole of the mounting part 200, the positioning part 320 protrudes from the mounting part 200, and the positioning body 310 abuts against the stepped surface to realize the assembly of the positioning part 300 and the mounting part 200. Then, the elastic part 400 is fitted onto the positioning post 140, and then the mounting part 200 with the positioning part 300 is placed into the mounting groove 120. Finally, the mounting part 200 is locked onto the template body 100 using fasteners.
[0061] Please see Figures 1 to 3Based on the above, this embodiment further explains the working principle of the positioning die 10 as follows:
[0062] S100. Place the unwound electrode foil 20 on the template body 100, and bring the long side of the electrode foil 20 close to the positioning member 300.
[0063] S200. Start the semi-automatic die-cutting machine. Positioning part 300 moves downward under pressure, and elastic part 400 deforms to store energy.
[0064] S300. Die-cut to obtain the electrode sheet, end die-cutting;
[0065] S400. The elastic element 400 recovers its deformation, causing the positioning element 300 to move upward, ready for the next die-cutting.
[0066] This embodiment achieves mechanical positioning of die-cutting by installing the mounting component 200, positioning component 300, and elastic component 400 onto the template body 100, thereby improving production quality and efficiency, ensuring sample consistency, and reducing scrap rate.
[0067] In addition, the structure of this embodiment is simple, which reduces manufacturing and installation costs.
[0068] Example 2
[0069] Please see Figure 1 Based on the above embodiments, this embodiment provides a die-cutting structure, which includes an upper die-cutting die and a positioning lower die-cutting die 10 as described in the above embodiments, wherein the upper die-cutting die and the positioning lower die-cutting die 10 are adapted to each other.
[0070] The upper die and the positioning lower die 10 work together to perform die cutting to obtain the electrode sheet.
[0071] This embodiment has all the advantages described in Embodiment 1, improving die-cutting quality and die-cutting efficiency.
[0072] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0073] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.
Claims
1. A positioning die, characterized in that, The device includes a template body, an mounting component, a positioning component, and an elastic component. The template body has a die-cutting position and a mounting groove. The mounting component is placed in the mounting groove and fixedly connected to the template body. The mounting component has a mounting hole. The positioning component has a positioning body and a positioning part. The positioning part is integrally formed with the positioning body. The shape of the positioning part is adapted to the mounting hole, and the positioning part passes through the mounting hole and extends to one side of the mounting component. The positioning body is located on the other side of the mounting component. On a projection plane perpendicular to the die-cutting direction, the projected area of the positioning part is smaller than the projected area of the positioning body. The elastic component is installed between the positioning component and the template body along the die-cutting direction. When the elastic component deforms, the height of the positioning part is equal to the height of the template body. When the elastic component returns to its original shape, the height of the positioning part is higher than the height of the template body.
2. The positioning lower die as described in claim 1, characterized in that, The height of the mounting component is equal to or lower than the height of the template body.
3. The positioning lower die as described in claim 1, characterized in that, The mounting component is further provided with a connecting hole, which is located at the bottom of the mounting hole. The connecting hole and the mounting hole form a stepped hole, and the positioning body abuts against the stepped surface of the stepped hole.
4. The positioning die as described in claim 3, characterized in that, It also includes two fasteners, and the mounting component is further provided with two through holes. The two through holes are located at both ends of the mounting component, and the stepped hole is located between the two through holes. One fastener passes through one through hole to lock the mounting component and the template body.
5. The positioning lower die as described in claim 4, characterized in that, The template body is also provided with two strip holes, one strip hole and one through hole are provided respectively, and the length direction of each strip hole is parallel to the width direction of the template body.
6. The positioning die-cutting mold as described in any one of claims 1 to 5, characterized in that, The number of die-cutting positions is multiple, and the multiple die-cutting positions are arranged at intervals along the length direction of the template body. The length of the positioning member is adapted to the total length of the multiple die-cutting positions.
7. The positioning lower die as described in claim 6, characterized in that, Each of the die-cutting positions includes a body die-cutting position and an electrode die-cutting position. The body die-cutting position and the electrode die-cutting position are connected. The body die-cutting position and the electrode die-cutting position are arranged along the width direction of the template body, and the electrode die-cutting position is located between the body die-cutting position and the positioning member.
8. The positioning die-cutting mold as described in any one of claims 1 to 5, characterized in that, The template body is provided with a positioning post, which is located at the bottom of the mounting groove, and the elastic element is sleeved on the positioning post.
9. The positioning lower die as described in claim 8, characterized in that, There are two positioning posts, which are spaced apart.
10. A die-cutting structure, characterized in that, It includes an upper die and a lower positioning die as described in any one of claims 1 to 9, wherein the upper die is adapted to the lower positioning die.