Vehicle-mounted high-power transformer framework

Abstract

The utility model relates to the technical field of transformers, in particular to a vehicle-mounted high-power transformer framework which comprises a wrapping post, a first insulating plate, a second insulating plate and a third insulating plate. The first insulating plate, the second insulating plate and the third insulating plate are arranged from top to bottom in the vertical direction. The first insulating plate, the second insulating plate and the third insulating plate are arranged in parallel, the wrapping post is fixedly connected among the second insulating plate, the first insulating plate and the third insulating plate, the plurality of copper wires are wrapped by the insulating material to form a single-stranded wire, and the single-stranded wire is wound around the wrapping post to form a primary coil or a secondary coil. According to the transformer framework structure, the multiple copper wires are wrapped to form the single-strand wire, the single-strand wire does not need to be welded to the metal pins after being wound and can be directly connected to the PCB, the difficulty coefficient of the manufacturing process is reduced, meanwhile, the single-strand wire is easier to operate, and the winding efficiency is further improved.

Description

Technical Field

[0001] The present application relates to the technical field of transformers, and in particular to a vehicle-mounted high-power transformer skeleton. Background Art

[0002] A transformer is a device that uses the principle of electromagnetic induction to change AC voltage. Its main functions include voltage conversion, current conversion, impedance conversion, isolation, voltage stabilization, etc. The transformer skeleton is a component of the main structure of the transformer. It provides space for the copper wire in the transformer to wind and fix the magnetic core in the transformer. With the widespread use of transformers in today's society, the corresponding main body is also indispensable.

[0003] At present, the existing transformer skeleton has the following problems: the metal pins of the transformer skeleton are connected to the PCB board after soldering, but the vehicle-mounted transformer has high power and many thick copper wires. It is difficult to connect the copper wire interface with the metal pins through soldering, which is difficult; when winding the transformer, due to the conductivity of the copper wire, an insulating sleeve needs to be installed around the transformer skeleton, which is a complicated process and costly; when the wire is wound around the winding column, a part of the wire at the wire inlet is outside, resulting in an uneven bottom, a large space occupied, and a low utilization rate; the vehicle-mounted transformer has high power and is large in size compared to other transformers, so it occupies a large space during installation.

[0004] Therefore, there is an urgent need for a small-volume vehicle-mounted high-power transformer skeleton to solve the above problems. Utility Model Content

[0005] The purpose of the present application is to provide a small-volume vehicle-mounted high-power transformer skeleton.

[0006] The embodiments of the present application can be implemented through the following technical solutions:

[0007] A vehicle-mounted high-power transformer skeleton is provided with a central through hole extending vertically therethrough, comprising a winding post and a first insulating plate, a second insulating plate, and a third insulating plate arranged from top to bottom along the vertical direction, wherein the first insulating plate, the second insulating plate, and the third insulating plate are arranged parallel to each other, and the winding post is fixedly connected between the second insulating plate and the first insulating plate and the third insulating plate; a plurality of copper wires are wrapped with insulating material to form a single-strand conductor, and the single-strand conductor is wound around the winding post to form a primary coil or a secondary coil.

[0008] Furthermore, it also includes a fixing unit, which includes a first clip and a second clip, the first clip and the second clip are clip structures with the same structure and symmetrically arranged, and the first clip and the second clip are snap-connected to the two ends of the third insulating plate in the horizontal direction.

[0009] Furthermore, the snap-on structure includes a T-shaped protrusion and a first L-shaped protrusion and a second L-shaped protrusion symmetrically arranged at both ends of the snap-on structure, and the third insulating plate is provided with a slot structure corresponding to the snap-on structure at both ends along the horizontal direction, and the slot structure includes a first L-shaped slot, a second L-shaped slot and a T-shaped slot, and the first L-shaped slot, the second L-shaped slot and the T-shaped slot can be respectively engaged and connected with the first L-shaped protrusion, the second L-shaped protrusion and the T-shaped protrusion.

[0010] Furthermore, the top end of the buckle structure may abut against the top of the third insulating plate.

[0011] Furthermore, the third insulating plate is provided with a third groove and a fourth groove near the first buckle end, the third groove and the fourth groove have the same shape, size and structure, and the third groove and the fourth groove are engaged with the first buckle to limit the single-strand wire.

[0012] Furthermore, the width of the third groove and the fourth groove is smaller than the maximum width of the single-strand conductor.

[0013] Furthermore, the slopes of the third groove and the fourth groove are arranged toward the outer side of the third insulating plate.

[0014] Furthermore, the second insulating plate is provided with a first groove and a second groove near the first buckle end, and the widths of the first groove and the second groove are both smaller than the maximum width of the single-strand wire. The beginning section of the single-strand wire is located in the first groove, and the end section of the single-strand wire extends out of the second groove after winding.

[0015] Furthermore, the third insulating plate is provided with a fifth groove and a sixth groove near the second buckle end, the beginning section of the single-strand wire is located in the fifth groove, and the end section of the single-strand wire extends out of the sixth groove after winding.

[0016] Furthermore, the width of the fifth groove and the sixth groove is smaller than the maximum width of the single-strand conductor.

[0017] Furthermore, the slopes of the fifth groove and the sixth groove are arranged toward the outer side of the third insulating plate.

[0018] The vehicle-mounted high-power transformer skeleton provided in the embodiment of the present application has at least the following beneficial effects:

[0019] 1. The transformer skeleton structure in this application wraps several copper wires to form a single-strand conductor. After winding, it does not need to be welded with metal pins and can be directly connected to the PCB board, which reduces the difficulty coefficient of the manufacturing process. At the same time, the single-strand conductor is easier to operate, further improving the winding efficiency;

[0020] 2. The transformer frame in the present application fixes the beginning and the end of the wound single-strand wire on the transformer frame by means of a buckle structure and a slot structure, thereby enhancing the winding stability of the single-strand wire and effectively preventing the single-strand wire from loosening;

[0021] 3. The thickness of the transformer skeleton in this application is smaller than that of the traditional vehicle-mounted high-power transformer skeleton, which is easy to install and has high space utilization;

[0022] 4. The single-strand wire in the present application is wrapped with insulating material and has insulation properties, so there is no need to install an insulating sleeve around the transformer frame for protection, which saves materials and has low costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 An exploded view of a vehicle-mounted high-power transformer skeleton in this application;

[0024] Figure 2 A front view of a vehicle-mounted high-power transformer skeleton in the present application;

[0025] Figure 3 This is an exploded view from another angle of a vehicle-mounted high-power transformer skeleton in this application;

[0026] Figure 4 An exploded diagram of the vehicle-mounted high-power transformer in this application;

[0027] Figure 5 This is the overall structure diagram of the vehicle-mounted high-power transformer in this application.

[0028] The numbers in the figure are: 1-first magnetic core, 11-first protrusion, 21-first buckle, 22-second buckle, 100-first L-shaped protrusion, 200-T-shaped protrusion, 300-second L-shaped protrusion, 400-first L-shaped groove, 500-T-shaped groove, 600-second L-shaped groove, 23-first insulating plate, 24-second insulating plate, 241-first groove, 242-second groove, 25-third insulating plate, 251-third groove, 252-fourth groove, 253-fifth groove, 254-sixth groove, 26-winding column, 261-center through hole, 3-second magnetic core, 31-second protrusion. DETAILED DESCRIPTION

[0029] Hereinafter, the present application will be further described based on preferred embodiments with reference to the accompanying drawings.

[0030] In addition, various components on the drawings are enlarged (thickened) or reduced (thinned) for ease of understanding, but this practice is not intended to limit the scope of protection of the present application.

[0031] Words importing the singular also include the plural and vice versa.

[0032] In the description of the embodiments of the present application, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. indicate an orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the products of the embodiments of the present application are usually placed when in use, it is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, in the description of the present application, in order to distinguish different units, the words first, second, etc. are used in this specification, but these are not limited by the order of manufacture, nor can they be understood as indicating or implying relative importance, and their names may be different in the detailed description and claims of the present application.

[0033] The vocabulary in this specification is used to illustrate the embodiments of the present application, but is not intended to limit the present application. It should also be noted that, unless otherwise clearly specified and limited, the terms "disposed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, an indirect connection through an intermediate medium, or a connection between the two elements. For those skilled in the art, the specific meanings of the above terms in this application can be specifically understood.

[0034] The present application provides a vehicle-mounted high-power transformer skeleton, Figure 1 and Figure 2 The exploded view and front view of the vehicle-mounted high-power transformer skeleton in this application are shown respectively. Figure 1 and Figure 2 As shown, the on-board high-power transformer skeleton is provided with a central through hole extending in the vertical direction, including a winding post 26 and a first insulating plate 23, a second insulating plate 24, and a third insulating plate 25 arranged from top to bottom in the vertical direction. The first insulating plate 23, the second insulating plate 24, and the third insulating plate 25 are arranged parallel to each other, and the winding post 26 is fixedly connected between the second insulating plate 24 and the first insulating plate 23 and the third insulating plate 25.

[0035] Furthermore, in the present application, winding is performed in the upper space between the second insulating plate 24 and the third insulating plate 25. In order to further reduce interference between the wires and improve winding efficiency, a number of copper wires are wrapped with insulating material to form a single-strand wire. The single-strand wire is wound around the winding column 26 to form a primary coil or a secondary coil. After winding, the single-strand wire can be directly connected to the PCB board, and no longer needs to be connected to the metal pin through soldering. At the same time, since the outer surface of the single-strand wire is coated with insulating material and has insulating properties, there is no need to install an insulating protective cover around the skeleton of the on-board high-power transformer in the present application, which further reduces production costs and improves production efficiency.

[0036] Furthermore, in order to effectively fix the single-strand wire, Figure 1 As shown, the on-board high-power transformer skeleton in the present application also includes a fixing unit, which includes a first clip 21 and a second clip 22. The first clip 21 and the second clip 22 are clip structures with the same structure and symmetrically arranged. The first clip 21 and the second clip 22 are snap-connected at both ends of the third insulating plate 25 in the horizontal direction.

[0037] Specifically, the third insulating plate 25 is a rectangular structure, and the first clip 21 and the second clip 22 are installed on the short sides of the third insulating plate 25 .

[0038] Specifically, the snap-fit ​​structure includes a T-shaped protrusion 200 and a symmetrically arranged first L-shaped protrusion 100 and a second L-shaped protrusion 300. The third insulating plate 25 is provided with a slot structure matching and corresponding to the snap-fit ​​structure at both ends in the horizontal direction. The slot structure includes a first L-shaped slot 400, a second L-shaped slot 600 and a T-shaped slot 500. The first L-shaped slot 400, the second L-shaped slot 600 and the T-shaped slot 500 can be respectively engaged with the first L-shaped protrusion 100, the second L-shaped protrusion 300 and the T-shaped protrusion 200. When the snap-fit ​​structure is in the installed state, its top abuts against the top of the third insulating plate 25 to prevent the snap-fit ​​structure from falling off.

[0039] Furthermore, if Figure 1As shown, the third insulating plate 25 is provided with a third groove 251 and a fourth groove 252 near the end of the first buckle 21, and the third groove 251 and the fourth groove 252 have the same shape, size and structure, the width of the third groove 251 and the fourth groove 252 is less than the maximum width of the single-strand wire, and the slopes of the third groove 251 and the fourth groove 252 are arranged toward the outside of the third insulating plate 25. When in use, the beginning and the end of the single-strand wire can be pulled in, and then the first buckle 21 is installed. The first buckle and the third groove 251 and the fourth groove 252 respectively form two through holes for accommodating and fixing the single-strand wire, thereby enhancing the winding stability of the single-strand wire and effectively preventing the single-strand wire from loosening.

[0040] In some preferred embodiments of the present application, Figure 1 As shown, the second insulating plate 24 is provided with a second groove 242 and a first groove 241 near the end of the first buckle 21 , the beginning section of the single-strand wire is located in the first groove 241 , and the end section of the single-strand wire extends out of the second groove 242 after winding.

[0041] Furthermore, the positions of the first groove 241 and the second groove 242 correspond one-to-one to the positions of the third groove 251 and the fourth groove 252, respectively, and the widths of the first groove 241 and the second groove 242 are both smaller than the maximum width of the single-strand conductor, which can better limit the single-strand conductor and prevent it from loosening.

[0042] Specifically, the single-strand wire enters the third groove 251 and is wound around the winding rod 26, and then extends out of the fourth groove 252. The beginning and the end of the single-strand wire are pulled so that they are respectively inserted into the third groove 251 and the fourth groove 252 one by one, and then the first buckle 21 is installed in the slot structure of the third insulating plate 25 to fix the single-strand wire to enhance stability.

[0043] Furthermore, if Figure 3 As shown, the third insulating plate 25 is provided with a fifth groove 253 and a sixth groove 254 near the end of the second buckle 22 , the beginning section of the single-strand wire is located in the fifth groove 253 , and the end section of the single-strand wire extends out of the sixth groove 254 after winding.

[0044] In some preferred embodiments of the present application, the width of the fifth groove 253 and the sixth groove 254 is smaller than the maximum width of the single-strand wire, and the slopes of the fifth groove 253 and the sixth groove 254 are arranged toward the outside of the third insulating plate 25. The single-strand wire is inserted into the fifth groove 253 and the sixth groove 254 to limit the position of the single-strand wire, which can further improve the fixing effect of the single-strand wire.

[0045] Specifically, the starting section of the single-strand conductor passes through the fifth groove 253 and the routing is smooth. During the winding process, the starting section of the single-strand conductor is located in the fifth groove 253, then winds around the winding column 26, and finally extends out of the sixth groove 254. The second buckle 22 is matched with the slot structure of the third insulating plate 25 to achieve a snap connection. The second buckle 22 and the fifth groove 253 and the sixth groove 254 respectively form two through holes for accommodating the single-strand conductor, thereby fixing the single-strand conductor and effectively preventing the single-strand conductor from loosening.

[0046] In some preferred embodiments of the present application, an arc surface is provided at the connection between the winding post 26 and the first insulating plate 23, the second insulating plate 24 and the third insulating plate 25, so that the single-strand wire can be wound on the winding post 26 more closely, and the tightness between the single-strand wire and the winding post 26 is better and not easy to loosen, which can effectively improve the reliability of the transformer.

[0047] Specifically, in order to better reduce or avoid electromagnetic interference, the skeleton of the on-board high-power transformer in the present application is made of insulating material.

[0048] Furthermore, if Figure 4 , Figure 5 As shown, the on-board high-power transformer skeleton in the present application is applied to the on-board high-power transformer, wherein the first magnetic core 1 and the second magnetic core 3 are respectively engaged on the top of the first insulating plate 23 and the bottom of the third insulating plate 25 in the vertical direction, and the first magnetic core 1 and the second magnetic core 3 are respectively provided with a first protrusion 11 and a second protrusion 31, and the size and shape of the first protrusion 11 and the second protrusion 31 match the center through hole 261. When connected, the first protrusion 11 and the second protrusion 31 are respectively extended into the center through hole 261, and the first magnetic core 1, the second magnetic core 3 and the periphery of the on-board high-power transformer skeleton in this application are connected together to form a closed magnetic circuit.

[0049] The above is a detailed introduction to the specific implementation methods of the present application. For those skilled in the art, several improvements and modifications may be made to the present application without departing from the principles of the present application. These improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. A vehicle-mounted high-power transformer skeleton, which has a central through hole extending vertically, characterized in that: The invention comprises a winding post (26) and a first insulating plate (23), a second insulating plate (24), and a third insulating plate (25) which are arranged from top to bottom in a vertical direction, wherein the first insulating plate (23), the second insulating plate (24), and the third insulating plate (25) are arranged parallel to each other, and the winding post (26) is fixedly connected between the second insulating plate (24) and the first insulating plate (23), and the third insulating plate (25); A plurality of copper wires are wrapped with insulating materials to form a single-strand conductor, and the single-strand conductor is wound around the winding rod (26) to form a primary coil or a secondary coil.

2. The vehicle-mounted high-power transformer skeleton according to claim 1 is characterized in that: The invention also comprises a fixing unit, wherein the fixing unit comprises a first buckle (21) and a second buckle (22), wherein the first buckle (21) and the second buckle (22) are buckle structures with the same structure and symmetrically arranged, and the first buckle (21) and the second buckle (22) are snap-connected to two ends of the third insulating plate (25) in a horizontal direction.

3. The vehicle-mounted high-power transformer skeleton according to claim 2 is characterized in that: The buckle structure comprises a T-shaped protrusion (200) and a first L-shaped protrusion (100) and a second L-shaped protrusion (300) symmetrically arranged at two ends of the buckle structure; two ends of the third insulating plate (25) in a horizontal direction are provided with a slot structure corresponding to the buckle structure one by one; the slot structure comprises a first L-shaped slot (400), a second L-shaped slot (600) and a T-shaped slot (500); the first L-shaped slot (400), the second L-shaped slot (600) and the T-shaped slot (500) can be respectively engaged with the first L-shaped protrusion (100), the second L-shaped protrusion (300) and the T-shaped protrusion (200); The top end of the buckle structure can abut against the top of the third insulating plate (25).

4. The vehicle-mounted high-power transformer skeleton according to claim 2 is characterized in that: The third insulating plate (25) is provided with a third groove (251) and a fourth groove (252) near the end of the first buckle (21); the third groove (251) and the fourth groove (252) have the same shape, size and structure; the third groove (251) and the fourth groove (252) are engaged with the first buckle (21) to limit the position of the single-strand wire.

5. The vehicle-mounted high-power transformer skeleton according to claim 4 is characterized in that: The widths of the third groove (251) and the fourth groove (252) are smaller than the maximum width of the single-strand conductor.

6. The vehicle-mounted high-power transformer skeleton according to claim 4 is characterized in that: The slopes of the third groove (251) and the fourth groove (252) are arranged toward the outside of the third insulating plate (25).

7. The vehicle-mounted high-power transformer skeleton according to claim 2, characterized in that: The second insulating plate (24) is provided with a first groove (241) and a second groove (242) near the end of the first buckle (21); the widths of the first groove (241) and the second groove (242) are both smaller than the maximum width of the single-strand wire; the beginning section of the single-strand wire is located in the first groove (241); and the end section of the single-strand wire extends out of the second groove (242) after winding.

8. The vehicle-mounted high-power transformer skeleton according to claim 2 is characterized in that: The third insulating plate (25) is provided with a fifth groove (253) and a sixth groove (254) near the end of the second buckle (22); the beginning section of the single-strand wire is located in the fifth groove (253); and the end section of the single-strand wire extends out of the sixth groove (254) after winding.

9. The vehicle-mounted high-power transformer skeleton according to claim 8, characterized in that: The widths of the fifth groove (253) and the sixth groove (254) are smaller than the maximum width of the single-strand conductor.

10. The vehicle-mounted high-power transformer skeleton according to claim 8, characterized in that: The slopes of the fifth groove (253) and the sixth groove (254) are arranged toward the outside of the third insulating plate (25).

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