Electromagnetic welding head

Abstract

The application relates to an electromagnetic welding head, which comprises a mounting base, a plurality of mounting cavities formed by inward recessing, a plurality of magnetic core components, a copper strip component and a cover plate component; the plurality of magnetic cores are sequentially arranged in the mounting cavities; the copper strip component sequentially passes through the plurality of magnetic cores in an S shape from one end of the mounting cavities and returns to the starting point; and the cover plate component is arranged on the mounting base to seal the mounting cavities. Through the above arrangement, a continuous heating zone is formed in a welding area by a magnetic field, the S-shaped copper strip sequentially passes through each magnetic core, effective magnetic fields are generated at each magnetic core by electric currents, the welding area is continuously and uniformly heated, the temperature distribution of the electromagnetic welding head is uniform, the problems of local overheating or insufficient heating are avoided, and the welding quality is improved.

Description

Technical Field

[0001] This application relates to the field of photovoltaic manufacturing equipment technology, and in particular to an electromagnetic welding head. Background Technology

[0002] Welding technology plays a vital role in modern industrial production and is widely used in aerospace, automotive manufacturing, electronic equipment, photovoltaic industry, and many other fields. With continuous technological advancements, the requirements for welding quality and efficiency are becoming increasingly stringent.

[0003] Traditional welding methods, such as arc welding and laser welding, can meet welding requirements to a certain extent, but they still have some shortcomings. For example, arc welding may cause significant heat-affected zones on the welded workpiece, leading to deformation or performance degradation; while laser welding offers high precision, the equipment is expensive and requires highly skilled operators.

[0004] Electromagnetic induction welding technology, as an emerging welding method, has received increasing attention in recent years. It utilizes the principle of electromagnetic induction, generating an alternating magnetic field in the welding area to induce a current within the workpiece, thereby achieving rapid heating and welding. Compared with traditional welding methods, electromagnetic induction welding has the following advantages:

[0005] Non-contact heating: avoids mechanical damage to workpieces caused by traditional contact heating methods, and is particularly suitable for welding precision parts.

[0006] Small heat-affected zone: Due to the fast heating rate, the heat-affected zone of the workpiece is small, which can effectively reduce deformation and performance degradation during the welding process.

[0007] High welding quality: Electromagnetic induction welding can achieve uniform heating and uniform temperature distribution in the weld joint, thereby improving welding quality.

[0008] High production efficiency: The rapid heating and welding process can significantly shorten welding time and improve production efficiency.

[0009] Especially in the welding process of photovoltaic cells, the use of electromagnetic welding heads is increasing. However, existing electromagnetic welding heads still have some structural design problems. For example, the arrangement of the magnetic core and the layout of the copper strips may lead to uneven magnetic field distribution, affecting the welding effect. In addition, the stability and reliability of the welding heads need to be further improved.

[0010] Therefore, it is necessary to improve the existing technology to overcome the aforementioned defects. Summary of the Invention

[0011] Therefore, it is necessary to provide an electromagnetic welding head that can have a more uniform magnetic field distribution and a more efficient welding effect.

[0012] To solve the above-mentioned technical problems, this application provides the following technical solution:

[0013] An electromagnetic welding head, comprising:

[0014] The mounting base is recessed inward to form several mounting cavities;

[0015] The magnetic core component comprises several magnetic cores, which are sequentially installed within the mounting cavity.

[0016] A copper strip component, wherein the copper strip component passes through several magnetic cores in an S-shape from one end of the mounting cavity and returns to the starting point; and

[0017] A cover plate component is disposed on the mounting base to close the mounting cavity.

[0018] Furthermore, the magnetic core component includes a connecting portion and extension portions extending in the same direction from both ends of the connecting portion, with two extension portions formed at each end, and the copper strip component passing through the accommodating space formed between the two extension portions.

[0019] Furthermore, the extension faces the cover plate component, and the middle part of the cover plate component is recessed outward to form a receiving groove, and the extension is at least partially placed in the receiving groove.

[0020] Furthermore, the magnetic core component is made of one of the following materials: ferrite, silicon steel sheet, iron-nickel alloy, and iron-silicon-aluminum.

[0021] Furthermore, the sidewall of each adjacent mounting cavity is formed with a break, through which the copper strip enters the next mounting cavity.

[0022] Furthermore, the cover plate component has a first mounting hole, the mounting base has a corresponding second mounting hole, and the electromagnetic welding head further includes a connector that passes through the first mounting hole and the second mounting hole to connect the cover plate component and the mounting base.

[0023] Furthermore, the cover plate component is made of ceramic.

[0024] Furthermore, the mounting base is provided with two adjacent openings, the positions of which correspond to the two ends of the copper strip component.

[0025] Compared with the prior art, the electromagnetic welding head of this application is provided with a mounting base, a magnetic core component, a copper strip component, and a cover plate component. Several mounting cavities are formed by inward recesses. The cover plate component covers the mounting base to seal the mounting cavities. Several magnetic core components are arranged sequentially within the mounting cavities. The copper strip component passes through the magnetic cores in an S-shape from one end of the mounting cavity and returns to the starting point. When current passes through the S-shaped copper strip component, a magnetic field is generated around it. The arrangement of multiple magnetic cores in a straight line creates a continuous heating band in the welding area. The S-shaped copper strip passes through each magnetic core sequentially, ensuring that the current generates an effective magnetic field at each core. This results in continuous and uniform heating of the welding area, ensuring uniform temperature distribution of the electromagnetic welding head, avoiding localized overheating or underheating, and improving welding quality.

[0026] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, the preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the structure of the electromagnetic welding head provided in this application;

[0029] Figure 2 for Figure 1 Partial structural diagram;

[0030] Figure 3 for Figure 1 Another part of the structural diagram. Detailed Implementation

[0031] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0032] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application's specification are for illustrative purposes only and do not represent the only possible implementation.

[0033] 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 at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[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 and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates 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 indicates that the first feature is at a lower horizontal level than the second feature.

[0035] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used in this application includes any and all combinations of one or more of the associated listed items.

[0036] Please see Figures 1 to 3 This application provides an electromagnetic welding head, including a mounting base 1, a magnetic core component 2, a copper strip component 3, and a cover plate component 4.

[0037] The mounting base 1 has several recessed mounting cavities 11. Several magnetic core components 2 are sequentially installed in the mounting cavities 11. A cover plate component 4 covers the mounting base 1 to seal the mounting cavities 11. A copper strip component 3 passes through several magnetic core components 2 in an S-shape from one end of the mounting cavity 11 and returns to the starting point. When current passes through the S-shaped copper strip component, a magnetic field is generated around the copper strip component. With multiple magnetic cores arranged in a straight line, the magnetic field forms a continuous heating band in the welding area. The S-shaped copper strip passes through each magnetic core in sequence, ensuring that the current generates an effective magnetic field at each magnetic core. This results in continuous and uniform heating of the welding area, ensuring uniform temperature distribution of the electromagnetic welding joint, avoiding local overheating or underheating, and improving welding quality.

[0038] Specifically, the magnetic core component 2 includes a connecting portion 21 and extension portions 22 extending in the same direction from both ends of the connecting portion 21. Two extension portions 22 are formed at each end. The copper strip component 3 passes through the accommodating space 23 formed between the two extension portions 22. Therefore, when the copper strip component 3 is energized, a changing magnetic field can be generated through the magnetic core component 2. When the workpiece is placed in this magnetic field, induced currents (eddy currents) are generated inside the workpiece. These eddy currents flow inside the workpiece, and due to the resistance, heat is generated, thereby heating the metal material to its melting point.

[0039] During the specific welding process of photovoltaic cells, an alternating magnetic field is generated around the solder ribbon and the cell grid lines, causing eddy currents to be generated in the solder ribbon and the cell grid lines within the magnetic field. This causes the solder ribbon and the cell grid lines to heat up, melt the solder, and achieve welding.

[0040] As described above, the extension 22 faces the cover plate component 4, and the middle part of the cover plate component 4 is recessed outward to form a receiving groove 41. The extension 22 is at least partially placed in the receiving groove 41, thereby confining the magnetic core component 2 and the copper strip component 3 together.

[0041] In this embodiment, the magnetic core component 2 is made of one of the following materials: ferrite, silicon steel sheet, iron-nickel alloy, and iron-silicon-aluminum. These materials have the characteristics of high magnetic permeability and low loss, which can effectively improve welding efficiency and quality.

[0042] It is worth noting that the sidewall of each adjacent mounting cavity 11 is formed by a break 12, through which the copper strip component 3 enters the next mounting cavity 11. Furthermore, the mounting base 1 is provided with two adjacent openings 13, the positions of which correspond to the two ends of the copper strip component 3, facilitating current input and output.

[0043] The cover plate component 4 has a first mounting hole 42, and the mounting base 1 has a corresponding second mounting hole 14. The electromagnetic welding head also includes a connector that passes through the first mounting hole 42 and the second mounting hole 14 to connect the cover plate component 4 and the mounting base 1. In this embodiment, the cover plate component 4 is made of ceramic, which has good insulation and high temperature resistance, and can effectively protect the internal structure and components of the welding head.

[0044] In summary, when current passes through the S-shaped copper strip component 3, a magnetic field is generated around it. Through the arrangement of multiple magnetic core components 2 in a straight line, this magnetic field forms a continuous heating band in the welding area. The S-shaped copper strip component 3 passes sequentially through each magnetic core component 2, ensuring that the current generates an effective magnetic field at each core component 2. This results in continuous and uniform heating of the welding area, ensuring a uniform temperature distribution in the electromagnetic welding joint, avoiding localized overheating or underheating, and improving welding quality.

[0045] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0046] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. Therefore, the patent protection scope of this application should be determined by the appended claims.

Claims

1. An electromagnetic welding head, characterized in that, include: The mounting base is recessed inward to form several mounting cavities; A plurality of magnetic core components are provided, and the plurality of magnetic core components are sequentially installed in the mounting cavity; A copper strip component, which passes through several magnetic core components in an S-shape from one end of the mounting cavity and returns to the starting point; and A cover plate component is disposed on the mounting base to close the mounting cavity; The magnetic core component includes a connecting portion and extension portions extending in the same direction from both ends of the connecting portion. Two extension portions are formed at each end, and the copper strip component passes through the accommodating space formed between the two extension portions.

2. The electromagnetic welding head according to claim 1, characterized in that, The extension faces the cover plate component, and the middle part of the cover plate component is recessed outward to form a receiving groove, and the extension is at least partially placed in the receiving groove.

3. The electromagnetic welding head according to claim 2, characterized in that, The magnetic core component is made of one of the following materials: ferrite, silicon steel sheet, iron-nickel alloy, and iron-silicon-aluminum.

4. The electromagnetic welding head according to claim 3, characterized in that, Each adjacent mounting cavity has a sidewall formed by a break, through which the copper strip enters the next mounting cavity.

5. The electromagnetic welding head according to claim 4, characterized in that, The cover plate component has a first mounting hole, the mounting base has a corresponding second mounting hole, and the electromagnetic welding head further includes a connector that passes through the first mounting hole and the second mounting hole to connect the cover plate component and the mounting base.

6. The electromagnetic welding head according to claim 5, characterized in that, The cover plate component is made of ceramic.

7. The electromagnetic welding head according to claim 6, characterized in that, The mounting base has two adjacent openings, the positions of which correspond to the two ends of the copper strip component.

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