Roller device and roll forming equipment
By using multiple pairs of forming rollers in a roll forming equipment and adjusting their spacing and fillet radius, a fine flow channel was formed, solving the problem that existing technologies cannot produce fine electrode plates, thereby improving the reaction area of the electrode plates and the efficiency of fuel cells.
Patent Information
- Application Number
- CN202423216778.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-24
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2034-12-24
AI Technical Summary
Existing electrode plate roll forming processes can only produce large-cycle electrode plates, and cannot produce fine-cycle electrode plates, resulting in insufficient reaction area.
At least two pairs of forming roller sets are used. The first forming roller and the second forming roller of each pair of forming roller sets are distributed along the direction perpendicular to the rolling direction, and the spacing between them decreases sequentially. By adjusting the spacing and rounded corners of the forming rollers, the longitudinal and transverse progressive forming of the metal substrate is achieved, thereby forming a fine flow channel.
This increased the reaction area of the electrode plates, improved the efficiency of the fuel cell, and enabled the large-scale continuous production of fine electrode plates.
Smart Images
Figure CN223616554U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of fuel cell technology, and in particular to a roller device and roll forming equipment. Background Technology
[0002] Existing electrode plate roll forming processes only include a pair of forming rollers, with the rest being pressure rollers or form-holding rollers. However, single forming roller roll forming can only stretch the metal material in a single pass, and this single stretching is only suitable for forming electrode plates with large cycles, making it impossible to produce electrode plates with finer cycles. Utility Model Content
[0003] This application provides a roller device and a roll forming equipment, which aim to prepare metal electrode plates with finer features and increase the reaction area of the electrode plates.
[0004] This application provides a roller device for rolling an electrode plate. The roller device includes at least two pairs of forming roller groups. Each pair of forming roller groups includes a first forming roller and a second forming roller. The first forming roller and the second forming roller are distributed along a rolling direction perpendicular to the roller device.
[0005] Along the rolling direction of the roller device, the distance between the first forming roller and the second forming roller of each pair of forming roller groups decreases sequentially.
[0006] In one possible design, the first forming roller is provided with a plurality of outwardly protruding first forming portions, and the second forming roller is provided with a plurality of outwardly protruding second forming portions. Along the rolling direction perpendicular to the roller assembly, the plurality of first forming portions and the plurality of second forming portions are arranged alternately in sequence.
[0007] Along the rolling direction of the roller device, the distance between the first forming part and the second forming part arranged adjacent to each pair of forming roller groups gradually decreases.
[0008] In one possible design, the cross section of each pair of forming roller groups along the rolling direction perpendicular to the roller assembly is defined as the first surface;
[0009] Along the rolling direction of the roller device, the distance between the first forming part and the second forming part arranged adjacent to each pair of forming rollers on the first surface decreases sequentially along the rolling direction perpendicular to the roller device.
[0010] In one possible design, the cross section of each pair of forming roller groups along the rolling direction perpendicular to the roller assembly is defined as the first surface;
[0011] Along the rolling direction of the roller device, the fillets of the first forming portion and the second forming portion on the first surface of each pair of forming roller groups decrease sequentially.
[0012] In one possible design, the cross section of each pair of forming roller groups along the rolling direction parallel to the roller assembly is defined as the second surface;
[0013] Along the rolling direction of the roller device, the fillets of the first forming portion and the second forming portion on the second surface of each pair of forming roller groups decrease sequentially.
[0014] In one possible design, along the rolling direction of the roller assembly, the height of the first forming portion and the height of the second forming portion of each pair of forming roller groups increase sequentially.
[0015] In one possible design, along the rolling direction of the roller assembly, the width of the first forming portion and the width of the second forming portion of each pair of forming roller groups increase sequentially; or...
[0016] Along the rolling direction of the roller device, the width of the first forming part and the width of the second forming part of each pair of forming roller groups remain unchanged.
[0017] This application also provides a roll forming apparatus, which includes the roller device described above.
[0018] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit this application. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the electrode plate structure;
[0020] Figure 2 This is a schematic diagram of the roller device provided in this application for rolling metal substrates;
[0021] Figure 3 A schematic diagram of the electrode plate provided in this application;
[0022] Figure 4 for Figure 2 A diagram from another perspective;
[0023] Figure 5 for Figure 4 A schematic diagram of the cross-section of each pair of roller assemblies along the direction perpendicular to the rolling pressure;
[0024] Figure 6 for Figure 2 A diagram from another perspective;
[0025] Figure 7for Figure 6 A schematic diagram of the cross-section of each pair of roller assemblies along the parallel rolling direction.
[0026] Figure label:
[0027] 1-Roller assembly;
[0028] 11-Forming roller assembly;
[0029] 11a - First forming roller group;
[0030] 11b - Second forming roller set;
[0031] 11c - Third forming roller group;
[0032] 111 - First forming roller;
[0033] 111a - First molding section;
[0034] 112 - Second forming roller;
[0035] 112a - Second molding section;
[0036] 2-Electrode plates;
[0037] 21-Flow channel;
[0038] 3-Metallic substrate.
[0039] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. Detailed Implementation
[0040] To better understand the technical solution of this application, the embodiments of this application will be described in detail below with reference to the accompanying drawings.
[0041] It should be understood that the described embodiments are merely some, not all, of the embodiments in this application. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.
[0042] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The singular forms “a,” “the,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.
[0043] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.
[0044] It should be noted that the directional terms such as "upper," "lower," "left," and "right" described in the embodiments of this application are used to describe the angles shown in the accompanying drawings and should not be construed as limiting the embodiments of this application. Furthermore, in the context, it should be understood that when it is mentioned that an element is connected "upper" or "lower" to another element, it can be directly connected to the other element "upper" or "lower," or indirectly connected to the other element "upper" or "lower" through an intermediate element.
[0045] Hydrogen energy, as a green energy source, naturally possesses advantages in energy conservation and emission reduction. Proton exchange membrane hydrogen fuel cells (PEMFCs), due to their high energy density, have broad prospects for development in hydrogen-powered transportation applications. In PEMFCs, electrode plates are the main components. Electrode plates primarily include metal plates and graphite plates. Graphite plates, due to processing limitations, cannot be mass-produced quickly, while metal plates can be mass-produced rapidly through processes such as stamping and rolling.
[0046] During the rapid development of hydrogen fuel cell passenger and commercial vehicles, compared with stamping, rolling technology has great development prospects due to its high-speed production cycle and high stability.
[0047] However, due to limitations in the roll forming process, the current single-roll design can only produce electrode plates with relatively large feature dimensions (such as...). Figure 1 As shown, it is impossible to produce finely sized periodic electrode plates.
[0048] Therefore, this embodiment provides a roll forming device to solve the above-mentioned technical problems.
[0049] A roll forming machine (not shown in the figure) is used to roll a metal substrate 3 into an electrode plate 2. The metal substrate 3 can be stainless steel, titanium alloy, aluminum alloy, etc. The roll forming machine includes a base frame (not shown in the figure), a drive device (not shown in the figure), and a roller device 1. The roller device 1 and the drive device are mounted on the base frame, and the drive device can drive the roller device 1 to rotate relative to the base frame.
[0050] The drive device can adopt an existing drive structure, such as a drive motor and a matching transmission mechanism, and this embodiment does not limit it.
[0051] In some embodiments, the roll forming equipment may also include other components, such as an uncoiler (not shown in the figure) for uncoiling the metal substrate 3, a cutter (not shown in the figure) for cutting the metal substrate 3, etc., which are not limited in this embodiment.
[0052] Mainly, in this embodiment, by setting the roller device 1 in the roll forming equipment, it is possible to roll form a finely textured flow channel 21 on a metal substrate, thereby forming an electrode plate with the finely textured flow channel 21. The structure of the roller device 1 will be described in detail below with reference to the accompanying drawings.
[0053] like Figure 2 The diagram shows a roller device 1 rolling a metal substrate 3. The roller device 1 includes at least two pairs of forming roller sets 11. At least two forming roller sets 11 are used to roll the metal substrate 3 to form a flow channel 21. The at least two forming roller sets 11 are arranged sequentially along the rolling direction of the roller device 1, that is, the at least two forming roller sets 11 are distributed along the direction of transport of the metal substrate 3, so that each forming roller set 11 can roll the metal substrate 3.
[0054] Please continue to refer to this. Figure 2 Each pair of forming roller sets 11 includes a first forming roller 111 and a second forming roller 112, and the first forming roller 111 and the second forming roller 112 are distributed along the rolling direction perpendicular to the roller assembly 1. That is, the first forming roller 111 and the second forming roller 112 are distributed on both sides of the metal substrate 3. Parts of the structure of the first forming roller 111 and the second forming roller 112 mesh with each other, and along the rolling direction of the roller assembly 1, the distance between the first forming roller 111 and the second forming roller 112 of each pair of forming roller sets 11 decreases sequentially, so that the metal substrate passing through the roller assembly 1 forms Figure 3 The flow channel 21 structure is shown.
[0055] For example, the forming roller group 11 has three pairs: a first forming roller group 11a, a second forming roller group 11b, and a third forming roller group 11c. When the metal substrate 3 is conveyed through the first forming roller group 11a, a flow channel 21 shape with initial morphological characteristics is formed on the metal substrate 3. When the metal substrate 3 is conveyed through the second forming roller group 11b, a flow channel 21 shape with transitional morphological characteristics is formed on the metal substrate 3. When the metal substrate 3 is conveyed through the third forming roller group 11c, a flow channel 21 shape with forming morphological characteristics (such as...) is formed on the metal substrate 3. Figure 3 ).
[0056] It should be noted that the number of forming roller groups 11 is not limited in this embodiment. The forming roller groups 11 can be set to two pairs, three pairs, four pairs, five pairs, six pairs, etc., and can be set according to the actual situation.
[0057] In this embodiment, along the rolling direction of the roller device 1, the spacing between the first forming roller 111 and the second forming roller 112 of each pair of forming roller groups 11 is gradually reduced, so that multiple pairs of forming roller groups 11 roll the metal substrate 3 in sequence and stretch and form the metal substrate 3 in multiple steps, so that the metal substrate 3 is progressively formed, making full use of the stretchability of the metal substrate 3 to form an electrode plate 2 with fine flow channels 21, thereby increasing the number of flow channels 21 formed on the electrode plate 2, increasing the reaction area of the electrode plate 2, and improving the efficiency of the fuel cell.
[0058] like Figure 4 The diagram shown is a schematic of the roller device 1 rolling the metal substrate 3. Figure 5 for Figure 4 Please refer to the schematic diagram of the cross-section of each pair of forming rollers 11 perpendicular to the rolling direction. Figure 4 and Figure 5 The first forming roller 111 is provided with a plurality of outwardly protruding first forming portions 111a. Each first forming portion 111a is an annular protrusion structure that protrudes outward along the outer circumferential surface of the first forming roller 111, and the plurality of first forming portions 111a are evenly distributed along the axial direction of the first forming roller 111. The second forming roller 112 is provided with a plurality of outwardly protruding second forming portions 112a. Each second forming portion 112a is an annular protrusion structure that protrudes outward along the outer circumferential surface of the second forming roller 112, and the plurality of second forming portions 112a are evenly distributed along the axial direction of the second forming roller 112.
[0059] Along the rolling direction perpendicular to the roller assembly 1, a plurality of first forming portions 111a and a plurality of second forming portions 112a are arranged alternately in sequence, such that the plurality of first forming portions 111a and the plurality of second forming portions 112a can mesh with each other. Furthermore, along the rolling direction of the roller assembly 1, the distance D between adjacent first forming portions 111a and second forming portions 112a in each pair of forming roller groups 11 gradually decreases.
[0060] Specifically, the cross section of each pair of forming roller sets 11 along the rolling direction perpendicular to the roller device 1 is defined as the first surface (e.g., Figure 5 (See cross sections A1-A1, B1-B1, and N1-N1). Along the rolling direction of the roller device 1, the distance between the first forming part 111a and the second forming part 112a, which are adjacent to each other on the first surface of each pair of forming roller groups 11, decreases sequentially along the rolling direction perpendicular to the roller device 1. That is, along the rolling direction of the roller device 1, the width of the first forming part 111a and the width of the second forming part 112a of each pair of forming roller groups 11 increase sequentially.
[0061] For example, in the first forming roller group 11a, the distance D between the first forming part 111a and the second forming part 112a arranged adjacent to each other on the first surface along the rolling direction perpendicular to the roller device 1 can be 0.3 mm; in the second forming roller group 11b, the distance D between the first forming part 111a and the second forming part 112a arranged adjacent to each other on the first surface along the rolling direction perpendicular to the roller device 1 can be 0.2 mm; and in the third forming roller group 11c, the distance D between the first forming part 111a and the second forming part 112a arranged adjacent to each other on the first surface along the rolling direction perpendicular to the roller device 1 can be 0.1 mm.
[0062] Of course, the above spacing values are only for illustrative purposes. The spacing values and the specific number of forming roller groups 11 need to be set according to the actual situation.
[0063] Please continue to refer to the reference. Figure 4 and Figure 5 Along the rolling direction of the roller device 1, the fillet R of the first forming part 111a and the fillet R of the second forming part 112a on the first surface of each pair of forming roller groups 11 decreases sequentially.
[0064] For example, in the first forming roller group 11a, the fillet R of the first forming part 111a and the second forming part 112a on the first surface along the rolling direction perpendicular to the roller device 1 can be 0.3mm; in the second forming roller group 11b, the fillet R of the first forming part 111a and the second forming part 112a on the first surface along the rolling direction perpendicular to the roller device 1 can be 0.2mm; and in the third forming roller group 11c, the fillet R of the first forming part 111a and the second forming part 112a on the second surface along the rolling direction perpendicular to the roller device 1 can be 0.1mm.
[0065] Of course, the above values for fillet radius are only for illustrative purposes. The values for fillet radius and the specific number of forming roller groups 11 need to be set according to the actual situation.
[0066] In this embodiment, by adjusting the spacing and radius of the forming rollers in different forming roller groups 11 along the direction perpendicular to the rolling direction, the metal substrate 3 is formed longitudinally and progressively, so that the flow channel 21 on the metal substrate 3 is formed gradually, reducing the risk of deformation and damage to the flow channel 21 structure.
[0067] like Figure 6 The diagram shown is a schematic of the roller device 1 rolling the metal substrate 3. Figure 7 for Figure 6 Please refer to the schematic diagram of the cross-section of each pair of forming rollers 11 parallel to the rolling direction. Figure 6 and Figure 7 The cross section of each pair of forming roller groups 11 along the rolling direction parallel to the roller device 1 is defined as the second surface (e.g., Figure 7(A2-A2 section, B2-B2 section, N2-N2 section) Along the rolling direction of the roller device 1, the fillets of the first forming part 111a and the second forming part 112a on the second surface of each pair of forming roller groups 11 decrease sequentially.
[0068] For example, in the first forming roller group 11a, the fillet R of the first forming part 111a and the second forming part 112a on the second surface along the rolling direction perpendicular to the roller device 1 can be 0.3mm; in the second forming roller group 11b, the fillet R of the first forming part 111a and the second forming part 112a on the second surface along the rolling direction perpendicular to the roller device 1 can be 0.2mm; and in the third forming roller group 11c, the fillet R of the first forming part 111a and the second forming part 112a on the second surface along the rolling direction perpendicular to the roller device 1 can be 0.1mm.
[0069] Of course, the above values for fillet radius are only for illustrative purposes. The values for fillet radius and the specific number of forming roller groups 11 need to be set according to the actual situation.
[0070] Please continue to refer to the reference. Figure 6 and Figure 7 Along the rolling direction of the roller device 1, the distance between the first forming part 111a and the second forming part 112a arranged adjacent to each other on the second surface of each pair of forming roller groups 11 decreases sequentially along the rolling direction perpendicular to the roller device 1.
[0071] For example, in the first forming roller group 11a, the distance D between the first forming part 111a and the second forming part 112a arranged adjacent to each other on the second surface along the rolling direction perpendicular to the roller device 1 can be 0.3 mm; in the second forming roller group 11b, the distance D between the first forming part 111a and the second forming part 112a arranged adjacent to each other on the second surface along the rolling direction perpendicular to the roller device 1 can be 0.2 mm; and in the third forming roller group 11c, the distance D between the first forming part 111a and the second forming part 112a arranged adjacent to each other on the second surface along the rolling direction perpendicular to the roller device 1 can be 0.1 mm.
[0072] Of course, the above spacing values are only for illustrative purposes. The spacing values and the specific number of forming roller groups 11 need to be set according to the actual situation.
[0073] In this embodiment, by adjusting the spacing and radius of the forming rollers in different forming roller groups 11 parallel to the rolling direction, a transverse progressive forming of the metal substrate 3 is achieved, so that the flow channel 21 on the metal substrate 3 is gradually formed, reducing the risk of deformation and damage to the flow channel 21 structure.
[0074] In summary, in this embodiment, the roller device 1 includes at least two pairs of forming roller groups 11. By adjusting the spacing and radius of the forming rollers in different forming roller groups 11 perpendicular to the rolling direction, the metal substrate 3 is formed longitudinally in a progressive manner. By adjusting the spacing and radius of the forming rollers in different forming roller groups 11 parallel to the rolling direction, the metal substrate 3 is formed laterally in a progressive manner. This solves the problem of material stretching in both parallel and perpendicular directions when forming the flow channel 21 of the electrode plate 2 by rolling, and realizes the mass continuous production of metal electrode plates 2 with fine flow channel 21 features.
[0075] In some embodiments, along the rolling direction of the roller device 1, the height H of the first forming part 111a and the height H of the second forming part 112a of each pair of forming roller groups 11 increase sequentially, so that the depth of the flow channel 21 is gradually formed, reducing the risk of deformation and damage to the flow channel 21.
[0076] For example, the height H of the first forming part 111a and the second forming part 112a in the first forming roller group 11a can be 0.2mm, the height H of the first forming part 111a and the second forming part 112a in the second forming roller group 11b can be 0.3mm, and the height H of the first forming part 111a and the second forming part 112a in the third forming roller group 11c can be 0.4mm.
[0077] Of course, the height values mentioned above are only for illustrative purposes. The actual height values and the specific number of forming roller sets 11 need to be set according to the actual situation.
[0078] Alternatively, along the rolling direction of the roller device 1, the width H of the first forming part 111a and the width H of the second forming part 112a of each pair of forming roller groups 11 remain unchanged. The specific settings can be determined according to actual conditions, and are not limited in this embodiment.
[0079] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. A roller device, characterized in that, The roller device (1) includes at least two pairs of forming roller groups (11), each pair of forming roller groups (11) includes a first forming roller (111) and a second forming roller (112), and the first forming roller (111) and the second forming roller (112) are distributed along the rolling direction perpendicular to the roller device (1); Along the rolling direction of the roller device (1), the distance between the first forming roller (111) and the second forming roller (112) of each pair of forming roller groups (11) decreases sequentially.
2. The roller device according to claim 1, characterized in that, The first forming roller (111) is provided with a plurality of outwardly protruding first forming parts (111a), and the second forming roller (112) is provided with a plurality of outwardly protruding second forming parts (112a). Along the rolling direction perpendicular to the roller device (1), the plurality of first forming parts (111a) and the plurality of second forming parts (112a) are arranged alternately in sequence. Along the rolling direction of the roller device (1), the distance between the first forming part (111a) and the second forming part (112a) of each pair of forming roller groups (11) gradually decreases.
3. The roller device according to claim 2, characterized in that, The first surface is defined as the cross section of each pair of forming roller groups (11) along the rolling direction perpendicular to the roller device (1); Along the rolling direction of the roller device (1), the distance between the first forming part (111a) and the second forming part (112a) of each pair of forming roller groups (11) arranged adjacent to each other on the first surface decreases sequentially along the rolling direction perpendicular to the roller device (1).
4. The roller device according to claim 2, characterized in that, The first surface is defined as the cross section of each pair of forming roller groups (11) along the rolling direction perpendicular to the roller device (1); Along the rolling direction of the roller device (1), the fillets of the first forming part (111a) and the second forming part (112a) on the first surface of each pair of forming roller groups (11) decrease sequentially.
5. The roller device according to claim 2, characterized in that, The cross section of each pair of forming roller groups (11) along the rolling direction parallel to the roller device (1) is defined as the second surface; Along the rolling direction of the roller device (1), the fillets of the first forming part (111a) and the second forming part (112a) on the second surface of each pair of forming roller groups (11) decrease sequentially.
6. The roller device according to claim 2, characterized in that, Along the rolling direction of the roller device (1), the height of the first forming part (111a) and the height of the second forming part (112a) of each pair of forming roller groups (11) increase sequentially.
7. The roller device according to claim 2, characterized in that, Along the rolling direction of the roller device (1), the width of the first forming portion (111a) and the width of the second forming portion (112a) of each pair of forming roller groups (11) increase sequentially; or, Along the rolling direction of the roller device (1), the width of the first forming part (111a) and the width of the second forming part (112a) of each pair of forming roller groups (11) remain unchanged.
8. A roll forming equipment, characterized in that, The roll forming equipment includes the roller device (1) as described in any one of claims 1 to 7.