Electromagnetic pulse welding device

Abstract

The embodiment of the present application provides an electromagnetic pulse welding device, which comprises a substrate, a power supply assembly installed on the substrate, and a coil assembly connected with the power supply assembly, wherein the coil assembly comprises a coil body, the coil body comprises a bus plate, a return plate and a welding plate, the bus plate and the return plate are oppositely arranged along a first direction, the welding plate is arranged at one end of the bus plate and the return plate along a second direction and is connected with the bus plate and the return plate; the welding plate comprises a working section extending along a third direction, a bus section formed by being bent and extended from one end of the working section along the first direction, and a return section formed by being bent and extended from the other end of the working section along the first direction, the bus section is connected with the bus plate, the return section is connected with the return plate, and the first direction, the second direction and the third direction are perpendicular to each other. The electromagnetic pulse welding device provided by the embodiment of the present application aims to reduce the volume and weight of the electromagnetic pulse welding device and improve the accessibility of welding.

Description

Technical Field

[0001] This application belongs to the technical field of welding equipment, and specifically relates to an electromagnetic pulse welding device. Background Technology

[0002] Because dissimilar materials have significant differences in melting point, crystal structure, etc., ordinary fusion welding technology is difficult to weld them together well. This can lead to the formation of intermetallic compounds in the joint, resulting in reduced joint performance. Electromagnetic pulse welding is a type of solid-state welding. Since it does not require melting the materials to be welded during the welding process, it has a huge advantage when welding dissimilar materials.

[0003] However, electromagnetic pulse welding of related technologies has some problems. For example, the welding coil is too large to be used in conjunction with robots for automation. At the same time, the large and bulky welding coil makes it difficult to perform fine welding on complex features. Therefore, how to improve the welding accessibility of electromagnetic pulse welding devices has become an urgent problem to be solved in production. Summary of the Invention

[0004] The technical problem to be solved by this application is to provide an electromagnetic pulse welding device with higher welding accessibility.

[0005] In a first aspect, embodiments of this application provide an electromagnetic pulse welding apparatus, including a substrate, a power supply component mounted on the substrate, and a coil assembly connected to the power supply component. The coil assembly includes a coil body, which includes a busbar, a return plate, and a welding plate. The busbar and the return plate are disposed opposite each other along a first direction. The welding plate is disposed at one end of the busbar and the return plate along a second direction and connects the busbar and the return plate. The welding plate includes a working section extending along a third direction, a busbar section formed by bending and extending from one end of the working section along the first direction, and a return plate formed by bending and extending from the other end of the working section along the first direction. The busbar section is connected to the busbar, and the return plate is connected to the return plate. The first direction, the second direction, and the third direction are perpendicular to each other.

[0006] According to one embodiment of the first aspect of this application, the busbar and the return plate are centrally symmetrical about a first axis, which is parallel to a second direction and passes through the midpoint of the working section.

[0007] According to an embodiment of the first aspect of this application, the busbar includes a first surface and a second surface disposed opposite to each other along a third direction, and a busbar groove formed by recessing from the first surface near the busbar segment toward the second surface, wherein the first surface is connected to the busbar segment.

[0008] According to an embodiment of the first aspect of this application, the busbar further includes a third surface and a fourth surface that are disposed opposite to each other along a first direction. The connection surface between the third surface and the busbar segment, and the connection surface between the fourth surface and the first surface are both arc surfaces, and the arc surfaces do not intersect with the second direction.

[0009] According to an embodiment of the first aspect of this application, the projection of the working segment along the first direction at least partially overlaps with the busbar and forms a first gap between the working segment and the busbar; the projection of the working segment along the first direction at least partially overlaps with the return plate and forms a second gap between the working segment and the return plate; the coil assembly further includes a support member connected to the substrate and having at least a partial structure that fills the first gap and the second gap.

[0010] According to an embodiment of the first aspect of this application, the coil assembly further includes an insulating member, the insulating member having an annular cross-sectional shape perpendicular to the second direction, and being sleeved on the coil body.

[0011] According to an embodiment of the first aspect of this application, the coil assembly further includes a fastening member, the fastening member having an annular cross-sectional shape perpendicular to the second direction, and the fastening member being sleeved on the insulating member.

[0012] According to one embodiment of the first aspect of this application, the number of fastening members is two, and the two fastening members are spaced apart along the second direction.

[0013] According to an embodiment of the first aspect of this application, the power supply component includes a first component and a second component. The first component includes a first intermediate plate detachably connected to a busbar, a first conductive plate connected to the first intermediate plate, and a first busbar connected to the first conductive plate, the first busbar being used to connect to the positive terminal of an external power source. The second component includes a second intermediate plate detachably connected to a return plate, a second conductive plate connected to the second intermediate plate, and a second busbar connected to the second conductive plate, the second busbar being used to connect to the negative terminal of an external power source.

[0014] According to one embodiment of the first aspect of this application, the busbar, the return plate, and the welding plate are integrally formed.

[0015] The beneficial effects of this application are that by setting the busbar and return plate to be opposite each other along the first direction, and setting the welding plate at one end of the busbar and return plate along the second direction and connecting the busbar and return plate, as well as the letter "Z" design of the working section, busbar section and return section in the welding plate, the coil body forms a spatial coil structure, which minimizes the area occupied by the busbar and return plate of the non-working part in the coil body on the welding surface, increases the proportion of the welding plate on the welding surface, and thus reduces the overall area of ​​the welding surface, enabling the electromagnetic pulse welding device to weld more delicate and complex parts, and improving the welding accessibility of the electromagnetic pulse welding device. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a three-dimensional structural schematic diagram of the electromagnetic pulse welding apparatus provided in the first aspect embodiment of this application;

[0018] Figure 2 yes Figure 1 An enlarged view of part A of the electromagnetic pulse welding device shown;

[0019] Figure 3 This is a three-dimensional structural schematic diagram of the coil body in the electromagnetic pulse welding apparatus provided in the first aspect embodiment of this application;

[0020] Figure 4 This is a front view of the electromagnetic pulse welding apparatus provided in the first aspect embodiment of this application;

[0021] Figure 5 This is a left view of the electromagnetic pulse welding apparatus provided in the first aspect of this application.

[0022] In the figure, 100 is an electromagnetic pulse welding device; 10 is a substrate; 20 is a power supply component; 21 is a first component; 211 is a first intermediate plate; 212 is a first conductive plate; 213 is a first busbar; 22 is a second component; 221 is a second intermediate plate; 222 is a second conductive plate; 223 is a second busbar; 30 is a coil assembly; 31 is a coil body; 311 is a busbar; 3111 is a first surface; 3112 is a second surface; 3113 is a busbar groove; 3114 is a third surface; 3115 is a fourth surface; 312 is a return plate; 313 is a welding plate; 3131 is a working section; 3132 is a busbar section; 3133 is a return section; 32 is a supporting component; 33 is an insulating component; 34 is a fastening component; 101 is a first axis; 102 is a first gap; 103 is a second gap; X is a first direction; Y is a second direction; Z is a third direction. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0024] 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 pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.

[0025] In this application, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0026] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication 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.

[0027] In this application, the term "and / or" 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, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0028] In this application, "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0029] Figure 1 This is a three-dimensional structural schematic diagram of the electromagnetic pulse welding apparatus provided in the first aspect embodiment of this application; Figure 2 yes Figure 1 An enlarged view of part A of the electromagnetic pulse welding device shown; Figure 3 This is a three-dimensional structural schematic diagram of the coil body in the electromagnetic pulse welding apparatus provided in the first aspect embodiment of this application; Figure 4 This is a front view of the electromagnetic pulse welding apparatus provided in the first aspect embodiment of this application; Figure 5 This is a left view of the electromagnetic pulse welding apparatus provided in the first aspect of this application.

[0030] like Figures 1 to 5 As shown in the figure, this application provides an electromagnetic pulse welding device 100, including a substrate 10, a power supply assembly 20 mounted on the substrate 10, and a coil assembly 30 connected to the power supply assembly 20. The coil assembly 30 includes a coil body 31, which includes a busbar 311, a return plate 312, and a welding plate 313. The busbar 311 and the return plate 312 are disposed opposite each other along a first direction X, and the welding plate 313 is disposed between the busbar 311 and the return plate 312 along a second direction Y. One end is connected to the busbar 311 and the return plate 312; the welding plate 313 includes a working section 3131 extending along the third direction Z, a busbar section 3132 formed by bending and extending from one end of the working section 3131 along the first direction X, and a return section 3133 formed by bending and extending from the other end of the working section 3131 along the first direction X. The busbar section 3132 is connected to the busbar 311, and the return section 3133 is connected to the return plate 312. The first direction X, the second direction Y and the third direction Z are perpendicular to each other.

[0031] The substrate 10 is a component that plays a supporting and connecting role in the electromagnetic pulse welding device 100. That is, the substrate 10 is used to support the power supply component 20, the coil component 30 and other components used to support the coil component 30, and is used to connect with external welding equipment so that the electromagnetic pulse welding device 100 can function as a welding joint.

[0032] The power supply component 20 is mounted on the substrate 10, meaning that the power supply component 20 is connected to the substrate 10 and fixed by the substrate 10. Exemplarily, in some embodiments, the power supply component 20 and the substrate 10 may be detachably connected by connectors such as screws, bolts or studs.

[0033] In these embodiments of the present application, the power supply component 20 is used to connect an external power source to the coil component 30 to supply current to the coil component 30, thereby enabling the welding operation.

[0034] The coil assembly 30 includes a coil body 31, which in turn includes a busbar 311, a return plate 312, and a soldering plate 313. The busbar 311 and return plate 312 conduct current to form a complete current loop with the power supply assembly 20 and an external power source. The busbar 311 is connected to the positive terminal of the power supply assembly 20, serving as the current inflow end, while the return plate 312 is connected to the negative terminal of the power supply assembly 20, serving as the current outflow end.

[0035] The welding plate 313 is the component in the coil body 31 that actually performs the welding function. When welding is required using the electromagnetic pulse welding device 100, the external power supply can be turned on so that the current passes sequentially through the positive terminal of the external power supply, the positive terminal of the power supply component 20, the busbar 311, the welding plate 313, the return plate 312, the negative terminal of the power supply component 20, and the negative terminal of the external power supply. During this process, when the current flows into the welding plate 313 through the busbar 311, the cross-sectional area through which the current passes will be greatly reduced, so that the current density when the current flows into the welding plate 313 from the busbar 311 will suddenly increase, so as to generate a large instantaneous current (first-order current) at the welding plate 313. At the same time, since the distance between the flyer plate and the welding plate 313 is close, the flyer plate will generate a corresponding induced current (second-order current). Since this induced current is opposite to the instantaneous current, the flyer plate will be subjected to a large Lorentz force and hit the substrate to perform welding.

[0036] In summary, compared with the electromagnetic pulse welding device with a magnet collector in the related technology, the coil body 31 of this application can directly generate a secondary current on the fly plate during welding, so that the coil body 31 can directly act on the fly plate. Under the same current input, the energy utilization rate generated by the coil body 31 in this application is higher, the welding speed is faster, and the welding efficiency is also higher.

[0037] The busbar 311 and the return plate 312 are arranged opposite each other along the first direction X. The welding plate 313 is arranged at one end of the busbar 311 and the return plate 312 along the second direction Y. The first direction X is the direction where the positive and negative poles of the power supply component 20 are located. The end of the busbar 311 and the return plate 312 away from the welding plate 313 along the second direction Y is used to connect the power supply component 20. The end of the busbar 311 and the return plate 312 with the welding plate 313 along the second direction Y is the welding end of the electromagnetic pulse welding device 100.

[0038] The welding plate 313 connects the busbar 311 and the return plate 312. In some embodiments, one end of the welding plate 313 is welded to the busbar 311 and the other end is welded to the return plate 312. Alternatively, in some embodiments, both ends of the welding plate 313 may be detachably connected to the busbar 311 and the return plate 312 respectively. Alternatively, in some embodiments, both ends of the welding plate 313 may be integrally formed with the busbar 311 and the return plate 312.

[0039] The welding plate 313 includes a working section 3131 extending along a third direction Z, a confluence section 3132 formed by bending and extending from one end of the working section 3131 along a first direction X, and a return section 3133 formed by bending and extending from the other end of the working section 3131 along the first direction X. The confluence section 3132 is connected to the confluence plate 311, and the return section 3133 is connected to the return plate 312. The first direction X, the second direction Y, and the third direction Z are perpendicular to each other.

[0040] In these embodiments of the present application, the bus section 3132 and the return section 3133 are respectively formed by bending and extending from the working section 3131 at both ends along the third direction Z, and the bending directions of the bus section 3132 and the return section 3133 are opposite, so that the welding plate 313 is formed in a shape similar to the letter "Z". In this way, the part that actually performs the welding function in the entire coil body 31 is only the working section 3131 of the welding plate 313. At the same time, since the welding plate 313 is located at one end of the busbar 311 and the return plate 312 along the second direction Y, the busbar 311, the return plate 312 and the welding plate 313 together form a "space coil" structure, forming a more three-dimensional electromagnetic pulse welding device structure. This minimizes the area of ​​the welding surface (the plane where the welding plate 313 is located) occupied by the conductive components such as the busbar 311 and the return plate 312 in the coil body 31, so that the welding surface is more concentrated and can be used to weld more complex parts. Compared with the welding coil structure of planar coils in related technologies, it has the effect of a smaller welding surface and higher accessibility.

[0041] According to the embodiment of this application, the electromagnetic pulse welding device 100 is configured by setting a busbar 311 and a return plate 312 opposite to each other along a first direction X, and a welding plate 313 set at one end of the busbar 311 and the return plate 312 along a second direction Y, and connecting the busbar 311 and the return plate 312. The welding plate 313 has a letter "Z" design of the working section 3131, the busbar section 3132 and the return section 3133, so that the coil body 31 forms a spatial coil structure. This minimizes the area occupied by the busbar 311 and the return plate 312 in the non-working part of the coil body 31 on the welding surface, increases the proportion of the welding plate 313 on the welding surface, and thus reduces the overall area of ​​the welding surface. This enables the electromagnetic pulse welding device 100 to weld more delicate and complex parts, and improves the welding accessibility of the electromagnetic pulse welding device 100.

[0042] According to an embodiment of the first aspect of this application, the busbar 311 and the return plate 312 are centrally symmetrical about a first axis 101, which is parallel to the second direction Y and passes through the midpoint of the working section.

[0043] In these embodiments of this application, the first axis 101 is a virtual axis, and the busbar 311 and the return plate 312 are symmetrical about the first axis 101. This is to adapt to the aforementioned letter "Z" shaped arrangement of the coil body 31, so that the current can transition naturally when flowing from the busbar 311 into the busbar section 3132 and when flowing from the return section 3133 into the return plate 312, reducing the possibility of electric field lines concentrating at a certain point in the coil body 31, and making the current pass through the coil body 31 more smoothly.

[0044] According to an embodiment of the first aspect of this application, the busbar 311 includes a first surface 3111 and a second surface 3112 disposed opposite each other in the third direction Z, and a busbar groove 3113 formed by recessing from the first surface 3111 toward the second surface 3112 near the busbar segment 3132, wherein the first surface 3111 is connected to the busbar segment 3132.

[0045] The first surface 3111 and the second surface 3112 are arranged opposite each other along the third direction Z. That is, the first surface 3111 is the surface of the busbar 311 corresponding to the end of the working section 3131 that connects to the busbar section 3132. The connection between the first surface 3111 and the busbar section 3132 means that one end of the busbar section 3132 is connected to the end of the working section 3131 along the third direction Z, and the other end is connected to the end face of the busbar 311, which is the aforementioned first surface 3111. In the embodiment where the busbar 311, the return plate 312, and the welding plate 313 are integrally formed, it can be regarded as the busbar section 3132 being formed by bending and extending perpendicularly along the first direction X from the first surface 3111 of the busbar 311. In this way, the current is collected from the busbar 311, which has a larger cross-sectional area, and flows into the busbar section 3132.

[0046] The function of the manifold 3113 is to gradually reduce the cross-sectional area of ​​the current path and gradually change the direction of current flow. For example, in these embodiments of this application, the cross-sectional shape of the manifold 3113 perpendicular to the first direction X can be set to be semi-circular, that is, the bottom of the manifold 3113 after being recessed from the first surface 3111 to the second surface 3112 is semi-circular. In this way, when the current is transmitted from the busbar 311 to the welding plate 313, the aforementioned semi-circular manifold 3113 can be used to reduce the current flow area. At the same time, the direction of current flow can be gradually changed from being transmitted along the second direction Y to being transmitted along the third direction Z.

[0047] In these embodiments of this application, the manifold 3113 is recessed from the first surface 3111 near the manifold section 3132 toward the second surface 3112. This means that the wall of the manifold 3113 near the manifold section 3132 in the second direction Y is on the same plane as the side wall of the manifold section 3132 near the manifold plate 311 in the second direction Y. Through the transition between the manifold section 3132 and the manifold plate 311, the current direction is changed from being transported along the third direction Z to being transported along the first direction X.

[0048] Accordingly, the structures of the reflux plate 312 and the busbar 311 are symmetrical about the first axis 101. The arrangement of the reflux plate 312 and the reflux section 3133 will not be described in detail here.

[0049] According to an embodiment of the first aspect of this application, the busbar 311 further includes a third surface 3114 and a fourth surface 3115 that are disposed opposite to each other along the first direction X. The connection surface between the third surface 3114 and the busbar segment 3132, and the connection surface between the fourth surface 3115 and the first surface 3111 are both arc surfaces, and the arc surfaces do not intersect with the second direction Y.

[0050] In these embodiments of this application, by setting the connection surfaces of the third surface 3114 and the busbar 3132, and the connection surfaces of the fourth surface 3115 and the first surface 3111 to be arc surfaces, since the current needs to change direction during the process of flowing from the busbar 311 into the welding plate 313, that is, changing from the original transmission along the third direction Z to the transmission along the first direction X, the phenomenon of electric field concentration can be alleviated, the phenomenon of air breakdown caused by excessive stress due to electric field concentration can be reduced, and the welding reliability can be further improved.

[0051] The arc surface does not intersect the second direction Y, meaning that the arc surface is perpendicular to the plane formed by the first direction X and the third direction Z. Any line segment parallel to the second direction Y can be parallel to a line segment in the arc surface, or fall within the arc surface.

[0052] Exemplary, in some embodiments of this application, in order to alleviate the electric field concentration phenomenon that may occur at the connection between the second surface 3112 and the top surface when the current in the busbar 311 changes from being transported along the second direction Y to being transported along the third direction Z, the connection surface between the second surface 3112 and the top surface can also be set as an arc surface. Here, the aforementioned top surface refers to... Figure 3 The surface of the middle busbar 311 is close to one end of the welding plate 313 along the second direction Y.

[0053] Accordingly, the return plate 312 and the return section 3133 may also include the aforementioned third and fourth surfaces, and the structure is symmetrical about the first axis 101 with the structure of the busbar 311 and the busbar 3132. This will not be described in detail here.

[0054] According to an embodiment of the first aspect of this application, the projection of the working segment 3131 along the first direction X at least partially overlaps with the busbar 311, and a first gap 102 is formed between the working segment 3131 and the busbar 311; the projection of the working segment 3131 along the first direction X at least partially overlaps with the return plate 312, and a second gap 103 is formed between the working segment 3131 and the return plate 312; the coil assembly 30 further includes a support member 32, which is connected to the substrate 10 and has at least a partial structure that fills the first gap 102 and the second gap 103.

[0055] The projections of the two ends of the working section 3131 in the first direction X fall on the busbar 311 and the return plate 312 respectively, forming a first gap 102 between the working section 3131 and the busbar 311, and a second gap 103 between the working section 3131 and the return plate 312, which is the letter "Z" shaped arrangement of the aforementioned working section 3131.

[0056] The function of the support member 32 is to provide support for the coil body 31 and improve the stability of the coil body 31 structure. In these embodiments of this application, the support member 32 is connected to the substrate 10 and at least partially fills the first gap 102 and the second gap 103. A possible implementation is that one end of the support member 32 is connected to the substrate 10, while the other end extends into the first gap 102 and the second gap 103, so that the support member 32 can abut against the working section 3131, the busbar section 3132, and the busbar plate 311 within the first gap 102, reducing the probability of deformation of any part of the working section 3131, the busbar section 3132, and the busbar plate 311 during the operation of the electromagnetic pulse welding device 100; and that the support member 32 can abut against the working section 3131, the return section 3133, and the return plate 312 within the second gap 103, further reducing the probability of deformation of any part of the working section 3131, the return section 3133, and the return plate 312 during the operation of the electromagnetic pulse welding device 100.

[0057] It should be noted that in these embodiments of this application, the material of the support member 32 needs to be an insulating material. In some embodiments, epoxy resin or ceramic molded support member 32 can be selected.

[0058] According to an embodiment of the first aspect of this application, the coil assembly 30 further includes an insulating member 33, the insulating member 33 having an annular cross-sectional shape perpendicular to the second direction Y, and being sleeved on the coil body 31.

[0059] In these embodiments of this application, the insulating member 33 serves to isolate the coil body 31 from the outside world, and can also be made of epoxy resin or ceramic materials.

[0060] In these embodiments of this application, the insulating member 33 may be configured with a ring-shaped cross-section perpendicular to the second direction Y, and may be fitted onto the coil body 31. This means that the cross-sectional shape of the insulating member 33 perpendicular to the second direction Y may be the same as the cross-sectional shape of the coil body 31 perpendicular to the second direction Y; that is, the inner contour shape of the insulating member 33 may be the same as the outer contour shape of the coil body 31. The insulating member 33 is fitted onto the coil body 31 along the second direction Y to further improve the insulation performance of the coil assembly 30.

[0061] According to an embodiment of the first aspect of this application, the coil assembly 30 further includes a fastening member 34, the fastening member 34 having an annular cross-sectional shape perpendicular to the second direction Y, and the fastening member 34 being sleeved on the insulating member 33.

[0062] In these embodiments of the present application, the fastening member 34 is a member that cooperates with the aforementioned support member 32. The two cooperate to provide support and fastening for the coil body 31 in the plane formed by the first direction X and the third direction Z, reducing the possibility of deformation of the coil body 31 along the first direction X or along the third direction Z, and further improving the structural reliability of the coil assembly 30.

[0063] For example, in these embodiments of this application, the material of the fastening member 34 can be set to quenched 45 steel to obtain suitable strength and better reliability.

[0064] According to one embodiment of the first aspect of this application, the number of fastening members 34 is two, and the two fastening members 34 are spaced apart along the second direction Y.

[0065] For example, in some embodiments of this application, the number of fastening members 34 may be three or four, which can be selected according to the dimensions of the coil body 31 in the second direction Y.

[0066] According to an embodiment of the first aspect of this application, the power supply component 20 includes a first component 21 and a second component 22. The first component 21 includes a first intermediate plate 211 detachably connected to the busbar 311, a first conductive plate 212 connected to the first intermediate plate 211, and a first busbar 213 connected to the first conductive plate 212. The first busbar 213 is used to connect to the positive terminal of an external power source. The second component 22 includes a second intermediate plate 221 detachably connected to the return plate 312, a second conductive plate 222 connected to the second intermediate plate 221, and a second busbar 223 connected to the second conductive plate 222. The second busbar 223 is used to connect to the negative terminal of an external power source.

[0067] In these embodiments of the present application, the first component 21 and the second component 22 are respectively used to connect the busbar 311 and the return plate 312. Their structures are similar to those of the busbar 311 and the return plate 312, and are symmetrical about the first axis 101.

[0068] It should be noted that in these embodiments of this application, the first intermediate plate 211 is detachably connected to the busbar 311, and the second intermediate plate 221 is detachably connected to the return plate 312. This means that the integrated coil structure in related technologies is divided into the aforementioned coil body 31 and the subsequent power supply assembly 20, so that the coil portion used for soldering is independently formed as the aforementioned coil body 31, and the coil body 31 is detachably connected to the power supply assembly 20. In this way, since the coil body 31 used for soldering is a vulnerable component, this arrangement can reduce the waste of coil material and improve the efficiency of maintenance and replacement of the coil body 31.

[0069] For example, in these embodiments of this application, the first conductive plate 212 and the first intermediate plate 211, the first busbar 213 and the first conductive plate 212, the second conductive plate 222 and the second intermediate plate 221, and the second busbar 223 and the second conductive plate 222 can all be connected in a detachable manner, that is, any two of the above can be connected by screws or bolts or other connectors.

[0070] In these embodiments of this application, the current flow through the electromagnetic pulse welding device 100 is as follows: external power supply -- first busbar 213 -- first conductive plate 212 -- first intermediate plate 211 -- busbar 311 -- welding plate 313 -- return plate 312 -- second intermediate plate 221 -- second conductive plate 222 -- second busbar 223 -- external power supply. This forms a current loop, and the aforementioned working section 3131 is used to weld more delicate components, resulting in better reliability.

[0071] According to an embodiment of the first aspect of this application, the busbar 311, the return plate 312, and the welding plate 313 are integrally formed.

[0072] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of protection of this application is limited to these examples; under the concept of this application, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of one or more embodiments of this application as described above, which are not provided in detail for the sake of brevity.

[0073] One or more embodiments in this application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of this application. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of one or more embodiments in this application should be included within the protection scope of this application.

Claims

1. An electromagnetic pulse welding device (100), characterized in that, The device includes a substrate (10), a power supply assembly (20) mounted on the substrate (10), and a coil assembly (30) connected to the power supply assembly (20). The coil assembly (30) includes a coil body (31), which includes a busbar (311), a return plate (312), and a solder plate (313). The busbar (311) and the return plate (312) are disposed opposite to each other along a first direction (X). The solder plate (313) is disposed at one end of the busbar (311) and the return plate (312) along a second direction (Y) and connects the busbar (311) and the return plate (312). The welding plate (313) includes a working section (3131) extending along a third direction (Z), a confluence section (3132) formed by bending and extending from one end of the working section (3131) along the first direction (X), and a return section (3133) formed by bending and extending from the other end of the working section (3131) along the first direction (X). The confluence section (3132) is connected to the confluence plate (311), and the return section (3133) is connected to the return plate (312). The first direction (X), the second direction (Y), and the third direction (Z) are perpendicular to each other.

2. The electromagnetic pulse welding device (100) according to claim 1, characterized in that, The busbar (311) and the return plate (312) are centrally symmetrical about the first axis (101), which is parallel to the second direction (Y) and passes through the midpoint of the working section (3131).

3. The electromagnetic pulse welding device (100) according to claim 2, characterized in that, The busbar (311) includes a first surface (3111) and a second surface (3112) disposed opposite each other along the third direction (Z), and a busbar groove (3113) formed by recessing from the first surface (3111) toward the second surface (3112) near the busbar segment (3132), wherein the first surface (3111) is connected to the busbar segment (3132).

4. The electromagnetic pulse welding apparatus (100) according to claim 1, characterized in that, The projection of the working segment (3131) along the first direction (X) at least partially overlaps with the busbar (311), forming a first gap (102) between the working segment (3131) and the busbar (311); the projection of the working segment (3131) along the first direction (X) at least partially overlaps with the return plate (312), forming a second gap (103) between the working segment (3131) and the return plate (312). The coil assembly (30) further includes a support member (32) connected to the substrate (10) and having at least a portion of its structure filling the first gap (102) and the second gap (103).

5. The electromagnetic pulse welding apparatus (100) according to claim 4, characterized in that, The coil assembly (30) further includes an insulating member (33), which has a ring-shaped cross-section perpendicular to the second direction (Y) and is fitted onto the coil body (31).

6. The electromagnetic pulse welding apparatus (100) according to claim 5, characterized in that, The coil assembly (30) further includes a fastening member (34), which has an annular cross-sectional shape perpendicular to the second direction (Y) and is sleeved on the insulating member (33).

7. The electromagnetic pulse welding apparatus (100) according to claim 6, characterized in that, The number of fastening members (34) is two, and the two fastening members (34) are spaced apart along the second direction (Y).

8. The electromagnetic pulse welding apparatus (100) according to claim 1, characterized in that, The power supply component (20) includes a first component (21) and a second component (22). The first component (21) includes a first intermediate plate (211) detachably connected to the busbar (311), a first conductive plate (212) connected to the first intermediate plate (211), and a first busbar (213) connected to the first conductive plate (212). The first busbar (213) is used to connect to the positive terminal of an external power source. The second component (22) includes a second intermediate plate (221) detachably connected to the return plate (312), a second conductive plate (222) connected to the second intermediate plate (221), and a second busbar (223) connected to the second conductive plate (222), the second busbar (223) being used to connect to the negative terminal of an external power source.

9. The electromagnetic pulse welding apparatus (100) according to any one of claims 1 to 8, characterized in that, The busbar (311), the return plate (312), and the welding plate (313) are integrally formed.

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