Electrical connection structure and method for manufacturing same
By directly printing the electrical contact surface on the conductive support structure and avoiding the coating in the non-contact area, the problem of difficulty in electrical contact on the special geometric design components is solved, and a low-cost and efficient electrical connection structure design is achieved.
Patent Information
- Application Number
- CN202380078276.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2023-01-25
- Filing Date
- 2023-08-24
- Publication Date
- 2025-06-20
AI Technical Summary
The existing electrical connection structures are difficult to achieve effective electrical contact on components with special geometric designs, and are costly.
Selective finishing and low transition resistance are achieved by direct printing process printing electrical contact surfaces on the conductive support structure and avoiding coatings in non-printed areas.
It ensures low transition resistance of the electrical contact surface, reduces material usage and manufacturing costs, and optimizes the design of the electrical connection structure.
Smart Images
Figure CN120188355A_ABST
Abstract
Description
[0001] Specification:
[0002] The present invention relates to an electrical connection structure, comprising a conductive support structure and at least one electrical contact surface. The present invention also relates to a manufacturing method of an electrical connection structure.
[0003] For the electrical contact part of an electrical connection structure, local coatings are a major challenge for a large number of components with special geometric designs. The electrical connection structure is, for example, a bus bar or a similar current-carrying component. The contact surfaces are usually difficult to access, and it is costly to mask the remaining components.
[0004] Currently, such contact surfaces are implemented using costly coating techniques, such as PVD processes, electroplating processes, or dipping processes. In this case, the corresponding areas are usually masked.
[0005] Therefore, the object of the present invention is to provide an improved electrical connection structure and an optimized manufacturing method of an electrical connection structure.
[0006] This object is solved by the combination of features according to claim 1.
[0007] According to the present invention, an electrical connection structure, in particular a bus bar or a similar current-carrying component, is proposed, which consists of a conductive support structure and at least one electrical contact surface. Here, the at least one electrical contact surface is mounted in a protruding manner at a predetermined position on the surface of the support structure, preferably by directly printing a conductive metal on the corresponding surface of the support structure by means of a direct printing process. Furthermore, in the non-printed surface area of the support structure, the support structure is configured without a coating and / or covering.
[0008] Here, it is advantageous that the electrical contact surface is directly printed on the support structure, and subsequent finishing of the contact surface is used for the electrical contact of the electrical connection structure, which is in particular a bus bar or a similar current-carrying component. Thus, it can be ensured that during the entire service life of the device, the contact surface always maintains a low transition resistance. Furthermore, it is advantageous that the contact material is only printed on the area of the finished component for contact. Here, the use of a printing process enables selective finishing of the subsequent contact surface. Therefore, the electrical connection structure can be optimally adjusted or designed according to the application. For example, this can also reduce the manufacturing cost and the amount of material used.
[0009] In an advantageous embodiment of the present electrical connection structure, it is further provided that the support structure is a metal plate, a metal strip, or a flat steel with an electrical contact surface or consists of them.
[0010] In a further aspect of the present invention, the electrical contact surface is arranged on the support structure at least in sections, within the area for contacting the contact element, especially within the edge area of the support structure. Thus, the support structure is only printed within the area provided for contact. As a result, the material cost of the electrical connection structure is optimized.
[0011] In a preferred embodiment, the second electrical contact surface is mounted in a protruding manner at a second predetermined position on the surface of the support structure, preferably by directly printing a conductive metal on the corresponding support structure surface using a direct printing process. In a further aspect of the present invention, a plurality of corresponding contact surfaces are mounted in a protruding manner at the corresponding predetermined positions on the surface of the support structure. This is advantageous in that more contact surfaces can be provided on the electrical connection structure, and thus the electrical connection structure can contact any number of predetermined contact surfaces.
[0012] In an advantageous embodiment variant, it is provided that the support structure is made of aluminum and / or copper, and / or made of an alloy of copper or aluminum. In this way, good electrical conductivity is ensured and contact is optimized. The printable material can particularly be a typical conductor material, which increases the transition resistance of the mechanical contact during use by forming an insulating oxide layer.
[0013] Furthermore, it is advantageous that the electrical contact surface is made of silver, gold, nickel, platinum and / or made of an alloy of silver, gold, nickel and / or platinum. In particular, the printed material is a metal that does not form an insulating oxide layer during use. Although silver forms oxides, these oxides have good electrical conductivity.
[0014] Based on the above disclosure, the present invention also provides a method for manufacturing an electrical connection structure, in which a conductive support structure is first provided. Then, at least one electrical contact surface is printed on the support structure by a printing device. In this case, the electrical contact surface is printed at a predetermined position on the support structure.
[0015] Since the electrical contact surface is directly printed on the support structure, the electrical contact surface can be directly arranged on the support structure according to a predetermined topology or a predetermined contact position. Therefore, the electrical connection structure can be optimally adjusted or designed according to the application situation. For example, this can also reduce the manufacturing cost and the amount of material used.
[0016] In a further preferred variant according to the present invention, the support structure is stamped in a predetermined manner by a stamping device after printing. In addition, in one embodiment, a protective film is applied to the electrical contact surface after printing or stamping. Furthermore, in a preferred embodiment, after stamping or applying the protective film, that is, after the last implemented method step, the printed support structure is bent in a predetermined arrangement by a bending device. Alternatively, the protective film is removed after the electrical connection structure is manufactured.
[0017] In an advantageous embodiment variant, the printing device prints at least one electrical contact surface from the liquid phase of the metal to be printed by means of screen printing, flexographic printing, gravure printing or inkjet printing.
[0018] As long as technically feasible and not mutually contradictory, the features disclosed above can be combined as required.
[0019] Other advantageous embodiments of the present invention are described in the dependent claims or are explained in more detail below together with the description of the preferred embodiments of the present invention with reference to the drawings. Among them:
[0020] Figure 1 shows an electrical connection structure, including a support structure and at least one electrical contact surface;
[0021] Figure 2 shows a schematic flow of a method for manufacturing an electrical connection structure.
[0022] The drawings are schematic examples. The same reference numerals in the drawings represent the same functions and / or structural features.
[0023] Figure 1 shows an electrical connection structure 10, including a conductive support structure 1 and at least one electrical contact surface 8. The contact surface 8 is mounted in a protruding manner at a predetermined position on the surface of the support structure, that is, directly printed on the corresponding support structure surface by means of a direct printing process through a conductive metal. In addition, in the non-printed surface area of the support structure 1, the support structure 1 is configured without a coating and covering. In this case, the support structure 1 is a metal plate with or consisting of the electrical contact surface 8. In addition, the electrical contact surface 8 is arranged in a segmented manner in the edge area of the support structure 1 for contacting contact elements. The support structure 1 is made of aluminum and / or copper. In addition, the electrical contact surface 8 is made of silver, gold, nickel, platinum and / or an alloy of silver, gold, nickel and / or platinum.
[0024] Figure 2 shows a schematic flow of a method for manufacturing the electrical connection structure 10, in which first a conductive support structure 1 is provided, and then at least one electrical contact surface 8 is printed on the support structure 1 by a printing device. In this case, the printing device prints at least one electrical contact surface 8 from the liquid phase of the metal to be printed by means of screen printing, flexographic printing, gravure printing or inkjet printing.
[0025] In an embodiment of the method, the support structure 1 is stamped in a predefined manner by means of a stamping device after printing. After the previous method step, i.e., after printing or stamping, a protective film is applied to the electrical contact surface 8. After a method step, i.e., after stamping or applying the protective film or printing, the printed support structure 1 is bent in a predefined arrangement by means of a bending device.
[0026] The invention is not limited to the above preferred embodiments. On the contrary, many variations are conceivable and the solution shown can be used even in substantially different types of embodiments.
Claims
1. An electrical connection structure (10), which consists of a conductive support structure (1) and at least one electrical contact surface (8), wherein, The at least one electrical contact surface (8) is mounted in a protruding manner at a predetermined position on the surface of the support structure, preferably by directly printing a conductive metal on the corresponding support structure surface by means of a direct printing process, wherein, in the non-printed surface area of the support structure (1), the support structure (1) is configured without a coating and / or covering.
2. The electrical connection structure (10) according to claim 1, wherein, The support structure (1) is a metal plate, metal strip or flat steel with at least one electrical contact surface (8) or consists of them.
3. The electrical connection structure (10) according to claim 1 or 2, wherein, The electrical contact surface (8) is arranged at least in sections on the support structure (1), in the area for contacting contact elements, especially in the edge area of the support structure (1).
4. The electrical connection structure (10) according to any one of claims 1 to 3, wherein, A second electrical contact surface (8) is mounted in a protruding manner at a second predetermined position on the surface of the support structure, preferably by directly printing a conductive metal on the corresponding support structure surface by means of a direct printing process.
5. The electrical connection structure (10) according to any one of the preceding claims, wherein, The support structure (1) is made of aluminum and / or copper, and / or made of an alloy of copper or aluminum.
6. The electrical connection structure (10) according to any one of the preceding claims, wherein, The electrical contact surface (8) is made of silver, gold, nickel, platinum, and / or made of an alloy of silver, gold, nickel and / or platinum.
7. A manufacturing method of the electrical connection structure (10) according to any one of claims 1 to 6, comprising the following steps: a. Provide a conductive support structure (1); b. Print at least one electrical contact surface (8) on the support structure (1) by means of a printing device.
8. The manufacturing method according to claim 7, wherein, After printing, the support structure (1) is punched in a predetermined manner by means of a punching device.
9. The manufacturing method according to claim 7 or 8, wherein, After the previous method step, a protective film is applied to the electrical contact surface (8).
10. The manufacturing method according to any one of claims 7 to 9, wherein, After the previous method step, the printed support structure (1) is bent in a predetermined arrangement by means of a bending device.
11. The manufacturing method according to any one of claims 7 to 10, wherein, The printing device prints the at least one electrical contact surface (8) from the liquid phase of the metal to be printed by means of screen printing, flexographic printing, gravure printing or inkjet printing.