Preparation method of conductive part
By using flexible electrodes in the thin-line patterned electroplating process, the problem of incomplete contact between the electrode and the battery cell is solved, the uniformity of the plating thickness and the protection of the substrate are achieved, and the plating quality is improved.
Patent Information
- Application Number
- CN202510021177.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-03
- Publication Date
- 2025-04-11
AI Technical Summary
In the thin-line patterned electroplating process, the contact between the electrode and the battery cell is incomplete, resulting in uneven plating thickness, uneven surface reflection appearance, and easy to scratch or crush thin and brittle base.
Using flexible electrodes, by printing conductive glue on the lid and constructing conductive microstructures, a flexible electrode with conductive microstructure is formed, and coated or pasted on a conductive roller, the contact area and viscosity are enhanced by using hole grooves and annular groove structures.
The complete contact between the flexible electrode and the substrate is achieved, ensuring uniform plating thickness, avoiding scratches or crushing of the substrate, and improving the plating quality.
Smart Images
Figure CN119800473A_ABST
Abstract
Description
Technical Field
[0001] The present application belongs to the technical field of metal electroplating deposition manufacturing, and in particular, relates to a method for preparing a conductive part. Background Art
[0002] The electroplating process is a process that has been developed and existed for a long time. Its basic design is to place the anode in the plating solution in a space equipped with the plating solution, and the battery cell and the cathode are connected and conductive. In this way, a closed electrical circuit is formed to deposit metal ions on the battery cell, which is the basic principle of electroplating.
[0003] However, when performing fine-line patterning electroplating, how to make the electrodes for power transmission have complete contact with the battery cell is another stringent requirement for the electroplating process. In addition, the fineness of the corresponding product or the thinness and brittleness of the product itself is a challenge for how to perform electroplating deposition. This is because the opening size of fine-line patterning is challenging when it is less than 15um or even smaller. The manufacturing of the electrodes is very difficult, whether it is the selection of materials or the design and processing of physical dimensions. The reason is that the incomplete contact between the electrode and the battery cell easily forms a small local discontinuous electroplating, resulting in uneven electroplating thickness, and indirectly causing uneven surface reflection appearance caused by inconsistent deposition thickness.
[0004] There are cases where conductive fabrics are used as the contact layer between the electrode and the object to be processed. However, due to thickness limitations, the conductive roller must be wrapped or pasted with dozens of layers. For thin and brittle substrates (i.e., the object to be processed), the substrate is easily crushed when pressure is applied for electroplating. Alternatively, conductive fabrics are often bundled with fiber filaments and conductive metal wires. Although the exposed metal wires can conduct electricity, there is also the problem of scratching the surface of the substrate. There are also cases where thin metal sheets are used as electrodes to contact the substrate for electroplating, but this method is easy to scratch the surface of the substrate, or because of the inability to apply pressure, effective contact is not possible, and sparking caused by poor contact is likely to occur. Alternatively, when fine-line patterned electroplating is required, the electrode size is too large to contact the substrate surface for electroplating, etc. Summary of the invention
[0005] The present application provides a method for preparing a conductive part, which solves the technical problems of poor contact between the existing conductive part and the substrate, or easy scratching of the workpiece to be processed.
[0006] In order to solve at least one of the above technical problems, the technical solution adopted in this application is:
[0007] A method for preparing a conductive member, comprising:
[0008] obtaining a flexible electrode;
[0009] Based on the flexible electrode and the conductive roller, a conductive member is manufactured;
[0010] Wherein, preparing the flexible electrode comprises:
[0011] Obtaining a lining;
[0012] Printing conductive glue on one side of the liner;
[0013] A conductive microstructure is obtained on the other side of the substrate.
[0014] Furthermore, the flexible electrode may be coated on the conductive roller or adhered to the conductive roller; wherein the conductive roller is a rigid structural member, which is a solid cylinder or a hollow cylinder.
[0015] Furthermore, a plurality of holes and grooves are constructed on the wall surface of the conductive roller; the holes and grooves are all arranged perpendicular to the wall surface, and the flexible electrodes are arranged to cover all the holes and grooves.
[0016] Furthermore, a plurality of annular grooves are arranged on the wall surface of the conductive roller, and all the grooves are evenly spaced; and the flexible electrodes are arranged in the grooves;
[0017] Preferably, the length of the grooves is greater than the length of the non-groove structure, and the depths of all the grooves perpendicular to the wall surface of the structural component are the same.
[0018] Furthermore, the lining is made of a conductive material or a non-conductive material and is provided with a plurality of gap holes. For a lining made of cloth, the mesh interwoven with warp and weft can be used as the gap holes. For a lining made of polymer plastic, holes can be made by laser, punching or injection molding to provide a plurality of evenly arranged gap holes on the lining.
[0019] Furthermore, when the conductive adhesive is printed on one side of the liner,
[0020] Laying the liner flat on a vacuum table;
[0021] Applying conductive glue on the upper end surface of the liner by a printing process;
[0022] Simultaneously, vacuum is drawn from below the vacuum table to allow the conductive glue to flow downward from the gap holes;
[0023] The conductive adhesive is dried and cured to obtain the liner having a conductive microstructure.
[0024] Furthermore, the method further includes printing the conductive adhesive for a second time at the location of the conductive adhesive to obtain a final conductive adhesive layer.
[0025] Furthermore, the matrix of the conductive glue includes a gelatin matrix, an adhesive, a dispersant, or a diluent, which is mixed with conductive particles to form a conductive silicone liquid.
[0026] Furthermore, during curing, the conductive adhesive may be dried by lamp irradiation, UV lamp irradiation or hot air drying.
[0027] Furthermore, after obtaining the liner with the conductive microstructure, it also includes adhering a layer of conductive foam on the side of the conductive glue away from the liner, and using the conductive foam to match the flexible electrode with the conductive microstructure with the conductive roller to obtain the conductive member.
[0028] By adopting a method for preparing a conductive part designed in the present application, a conductive part with a flexible electrode can be obtained, which is mainly suitable for electroplating processing of thin and brittle substrates. It can not only completely and effectively contact the substrate of the workpiece to be processed, so that the thickness after electroplating is more uniform; but also it will not scratch or crush the substrate, and can also effectively solve the technical problem of electroplating quality of narrow-mouth patterns. BRIEF DESCRIPTION OF THE DRAWINGS
[0029] Figure 1 It is a schematic diagram of the structure of one of the conductive members in this application;
[0030] Figure 2 yes Figure 1 Schematic diagram of the unfolded structure of the flexible electrode;
[0031] Figure 3 is a schematic structural diagram of another conductive member in the present application;
[0032] Figure 4 yes Figure 3 Schematic diagram of the unfolded structure of the flexible electrode;
[0033] Figure 5 is a three-dimensional diagram of a conductive member in the present application;
[0034] Figure 6 It is a schematic diagram of the structure of one of the conductive rollers in the present application;
[0035] Figure 7 It is a schematic diagram of the structure of one of the conductive rollers in the present application;
[0036] Figure 8 It is a schematic diagram of the structure of one of the conductive rollers in the present application;
[0037] Fig. 9 It is a schematic structural diagram of one of the conductive rollers in this application.
[0038] In the figure:
[0039] 10. Electrode 11. Lining 12. Conductive adhesive
[0040] 13. Conductive microstructure 14. Conductive foam 20. Conductive roller
[0041] 21. Hole 22. Groove DETAILED DESCRIPTION
[0042] The present application is described in detail below with reference to the accompanying drawings and specific embodiments.
[0043] This embodiment provides a method for preparing a conductive member, such as Figure 1 As shown, the steps include:
[0044] S1. First obtain a flexible electrode 10.
[0045] The flexible electrode 10 at least includes a liner 11, a conductive adhesive 12 and a conductive microstructure 13, wherein the conductive adhesive 12 and the conductive microstructure 13 are disposed on both sides of the liner 11, and the conductive microstructure 13 passes through the liner 11. Accordingly, the unfolded view of the flexible electrode 10 is as shown in FIG. Figure 2 As shown, the steps of preparing the flexible electrode 10 include the following:
[0046] Obtain the lining 11. Specifically, the lining 11 can be a conductive material or a non-conductive material. It can be a mesh structure made of cloth (warp and weft interwoven to form a mesh), polymer plastic (EVA, resin, PVC or rubber, etc.) material, or sponge and other elastic, chemical-resistant and temperature-resistant materials. A number of gap holes are constructed on the lining 11 through which the conductive microstructures 13 pass, and all the gap holes are evenly arranged on the lining 11. For the lining 11 made of cloth, the mesh interwoven with warp and weft itself can be used as the gap holes. For the lining 11 made of polymer plastic, the gap holes can be prepared by methods including but not limited to laser hole making, punching processing, or injection molding.
[0047] Conductive glue 12 is printed on one side of the liner 11. The liner 11 is first laid flat on the vacuum table, and then the conductive glue is coated on the upper end surface of the liner 11 through a printing process. The matrix of the conductive glue 12 includes but is not limited to a gelatin matrix, an adhesive, a dispersant, or a formulated diluent, which is mixed with conductive particles to form a liquid conductive silicone liquid material with antioxidant and high temperature resistance. Since the conductive glue has fluidity and is evacuated from under the vacuum table, the conductive glue can flow downward along the gap holes. After the conductive glue solidifies in the gap holes, the liner 11 with the conductive glue 12 is dried and cured to obtain a liner 11 with a conductive microstructure.
[0048] The conductive adhesive can be dried by lamp irradiation, UV lamp irradiation or in hot air atmosphere. The conductive microstructure formed by the conductive adhesive passing through the gap holes of the liner after drying and curing forms an electrode with a flexible structure, that is, a flexible electrode 10, together with the liner and the conductive adhesive.
[0049] Since the thickness of the conductive adhesive 12 printed for the first time is relatively thin after drying and curing, in order to ensure the overall conductivity of the liner 11 , a second conductive adhesive may be printed on the conductive adhesive 12 to form a final conductive adhesive layer.
[0050] like Figure 3 As shown, this embodiment is similar to Figure 1 The biggest difference compared to the embodiment in the embodiment is that a layer of conductive foam 14 is attached to the side of the conductive adhesive 12 away from the liner 11, and its unfolded structural schematic diagram is shown in FIG. Figure 4 The preparation process of the liner 11, the conductive adhesive 12 and the conductive microstructure 13 is similar to that of Figure 1 The preparation process is the same as in. No further details are given here.
[0051] In this embodiment, the flexible electrode 10 equipped with the conductive foam 14 is easier to bond with the conductive roller 20 and has a better elastic conductive member. When the substrate to be processed directly contacts the surface of the flexible electrode 10, the thin and brittle substrate can be avoided from being crushed, thereby ensuring the integrity and safety of the processing quality.
[0052] Regardless of whether there is a conductive foam 14 in the flexible electrode 10, the flexible electrode of this structure is suitable for the electroplating process of thin and brittle substrates, so that the flexible electrode 10 can effectively and completely contact the substrate, making the thickness after electroplating more uniform and consistent, thereby avoiding damage to the substrate; it can also prevent the problem of the substrate being crushed or scratched during electroplating, thereby improving the electroplating effect.
[0053] In addition, for the two flexible electrodes 10 with different structures, the lengths of the conductive microstructure 13 and the conductive glue 12 thereon are the same and are both smaller than the length of the liner 11, in order to facilitate the production of the conductive microstructure 13; and the length of the conductive foam 14 is also the same as the length of the conductive glue 12.
[0054] S2. A conductive member is manufactured based on the flexible electrode 10 and the conductive roller 20.
[0055] like Figure 5 As shown, the flexible electrode 10 as described above is used and is placed around the conductive roller 20, so that the flexible electrode 10 is coated on the outer wall of the conductive roller 20, or is adhered to the conductive roller 20. The conductive roller 20 is a rigid structural member, which is a solid cylinder or a hollow cylinder.
[0056] like Figure 1-2 As shown, for the flexible electrode 10 without the conductive foam 14, the conductive glue 12 itself has viscosity and can be directly adhered to the outer wall surface of the conductive roller 20, thereby forming a conductive member with transmittable properties.
[0057] like Figure 3-4 As shown, of course, for the flexible electrode 10 with the conductive foam 14, it has stronger viscosity and can be more effectively wrapped on the outer wall surface of the conductive roller 20. For all the embodiments described below, they are suitable for Figure 4 The structure of the flexible electrode 10 and the Figure 5 The structure of the flexible electrode 10 in FIG.
[0058] In this embodiment, the rigid structural member such as the conductive roller 20 can be Figure 6 The solid cylindrical structure shown can also be Figure 7 The hollow cylindrical structure shown can be used as the main body structure of the conductive roller 20 and cooperate with the flexible electrode 10 .
[0059] like Figure 8 As shown, whether it is a solid cylindrical structure or a hollow cylindrical structure, a number of holes and grooves 21 with smaller diameters can be constructed on the wall surface of the structural member. All holes and grooves 21 are arranged perpendicular to the wall surface, and the depth of the holes and grooves 21 can be set through the thickness of the body wall of the hollow cylinder, or can be arranged on the wall surface of the cylinder only as a blind hole, which can not only reduce the overall weight of the conductive roller 20, but also increase the friction force and conductivity of the matching area between the conductive roller 20 and the flexible electrode 10. The flexible electrode is covered in all holes and grooves. There is no specific restriction on the diameter size of the holes and grooves 21, which can be determined based on actual conditions. When the flexible electrode 10 is matched with the conductive roller 20, the length of the flexible electrode 10 needs to cover all these holes and grooves 21.
[0060] like Fig. 9 As shown, a plurality of annular grooves 22 are arranged on the wall surface of the structural member, and all the grooves 22 are evenly spaced and arranged in the length direction of the conductive roller 20. The arrangement of the grooves 22 can not only completely fix the flexible electrode 10 therein, but also reduce the overall weight of the conductive roller 20, and improve the reliability and safety of the conductive member formed by the combination of the conductive roller 20 and the flexible electrode 10. The flexible electrode 10 must be placed in the groove 22 and be adapted to the length of the groove 22; at the same time, the depth of the groove 22 should not be too high, and it should be less than the thickness of the flexible electrode 10, so as to improve the integrity and reliability of the surface contact between the flexible electrode 10 and the workpiece, i.e., the substrate. In this embodiment, the length of the grooves 22 is greater than the length of the non-groove structure, and the depth of all the grooves perpendicular to the wall surface of the structural member is the same.
[0061] The flexible electrode is used together with the conductive roller to form a conductive member. The conductive roller is then controlled to connect to an external power source or a rotating transmission device, so that the conductive member has a conductive mechanism that can transmit power or can transmit power or can transmit substrates.
[0062] By adopting a method for preparing a conductive part designed in the present application, a conductive part with a flexible electrode can be obtained, which is mainly suitable for electroplating processing of thin and brittle substrates. It can not only completely and effectively contact the substrate of the workpiece to be processed, so that the thickness after electroplating is more uniform; but also it will not scratch or crush the substrate, and can also effectively solve the technical problem of electroplating quality of narrow-mouth patterns.
[0063] The above detailed description of the embodiments of the present application is only a preferred embodiment of the present application and cannot be considered to limit the scope of implementation of the present application. All equivalent changes and improvements made within the scope of the present application should still fall within the scope of the patent coverage of the present application.
Claims
1. A method for preparing a conductive member, characterized in that: include: obtaining a flexible electrode; Based on the flexible electrode and the conductive roller, a conductive member is manufactured; Wherein, preparing the flexible electrode comprises: Obtaining a lining; Printing conductive glue on one side of the liner; A conductive microstructure is obtained on the other side of the substrate.
2. The method for preparing a conductive member according to claim 1, characterized in that: The flexible electrode can be coated on the conductive roller or adhered to the conductive roller; wherein the conductive roller is a rigid structural member, which is a solid cylinder or a hollow cylinder.
3. A conductive member according to claim 2, characterized in that: A plurality of holes and grooves are constructed on the wall surface of the conductive roller; the holes and grooves are all arranged perpendicular to the wall surface, and the flexible electrodes are arranged to cover all the holes and grooves.
4. A conductive member according to claim 2, characterized in that: A plurality of annular grooves are arranged on the wall surface of the conductive roller, and all the grooves are evenly spaced; and the flexible electrodes are arranged in the grooves; Preferably, the length of the grooves is greater than the length of the non-groove structure, and the depths of all the grooves perpendicular to the wall surface of the structural component are the same.
5. A conductive member according to any one of claims 1 to 4, characterized in that: The lining is made of a conductive material or a non-conductive material and is provided with a plurality of gap holes. For a lining made of cloth, the mesh interwoven with warp and weft on the lining can be used as the gap holes. For a lining made of polymer plastic, holes can be made by laser, punching or injection molding to provide a plurality of evenly arranged gap holes on the lining.
6. The method for preparing a conductive member according to claim 5, characterized in that: When the conductive glue is printed on one side of the liner, Laying the liner flat on a vacuum table; Applying conductive glue on the upper end surface of the liner by a printing process; Simultaneously, vacuum is drawn from below the vacuum table to allow the conductive glue to flow downward from the gap holes; The conductive adhesive is dried and cured to obtain the liner having a conductive microstructure.
7. The method for preparing a conductive member according to claim 6, characterized in that: The method also includes printing the conductive adhesive for a second time at the location of the conductive adhesive to obtain a final conductive adhesive layer.
8. A method for preparing a conductive member according to claim 6 or 7, characterized in that: The matrix of the conductive glue includes a gelatin matrix, an adhesive, a dispersant, or a diluent, which is mixed with conductive particles to form a conductive silicone liquid.
9. The method for preparing a conductive member according to claim 8, characterized in that: During curing, the conductive adhesive may be dried by lamp irradiation, UV lamp irradiation or hot air drying.
10. A method for preparing a conductive member according to any one of claims 1-4, 6-7, and 9, characterized in that: After obtaining the liner with the conductive microstructure, the method further includes adhering a layer of conductive foam to the side of the conductive adhesive away from the liner, and using the conductive foam to match the flexible electrode with the conductive microstructure with the conductive roller to obtain the conductive member.