Transformer magnetic core module and transformer

Abstract

The utility model relates to the field of transformers, and discloses a transformer magnetic core module and a transformer, the transformer magnetic core module comprises a base plate, a magnetic core piece and a coil, the base plate is provided with pin holes, the magnetic core piece comprises a magnetic core column and a magnetic core side column, the magnetic core side column is installed on the base plate, the magnetic core side column is provided with a containing cavity, and the magnetic core column is located in the containing cavity. One end of the magnetic core column is mounted on the magnetic core side column, and the other end of the magnetic core column faces a cavity opening of the accommodating cavity; the coil comprises a winding part and a pin part, the winding part is connected with the pin part, the winding part is wound on the magnetic core column, a receding gap is formed between the bottom, close to the bottom plate, of the magnetic core side column and the winding part, the receding gap is communicated with the containing cavity and the pin hole, and the pin hole is located between the magnetic core side column and the magnetic core column; and the pin part sequentially passes through the abdicating gap and the pin hole. The pin part does not need to be bent for multiple times to penetrate through the interior of the magnetic core side column, or the pin part penetrates through the magnetic core boss after being bent for multiple times, so that the bending times of the pin part are reduced, and the pin part is prevented from being broken in the coil assembling process.

Description

Technical Field

[0001] This utility model relates to the field of transformers, and in particular to a transformer core module and a transformer. Background Technology

[0002] Magnetic components typically consist of windings and a magnetic core. They are essential power electronic devices for energy storage, energy conversion, and electrical isolation, and mainly include two categories: transformers and inductors. In existing transformer core module structures, the core module includes a magnetic core and a coil. The magnetic core comprises a core post and core side posts. The coil is wound around the core post, using the core post as a support structure to form the winding portion of the coil. This winding portion rests against the core post and core side posts. The unwound coil needs to be bent downwards to form the coil leads, which are fixed to the base plate within the core module.

[0003] However, in the prior art, in order to fix the pin to the base plate, a magnetic core boss is provided between the magnetic core side post and the base plate. The pin needs to be bent multiple times and pass through the magnetic core boss and the base plate in sequence to complete the fixation. Since stress will be generated at the bending position of the pin, the pin is prone to breakage during the assembly process due to multiple bends. Utility Model Content

[0004] This utility model aims to provide a transformer core module to solve the technical problem that the coil pins are prone to breakage during assembly after being bent multiple times in the prior art.

[0005] To solve the above-mentioned technical problems, this utility model provides a transformer core module, comprising:

[0006] The base plate has pin holes;

[0007] A magnetic core component, comprising a core post and a side post, wherein the side post is mounted on the base plate, the side post has a receiving cavity, the core post is located within the receiving cavity, one end of the core post is mounted on the side post, and the other end of the core post faces the opening of the receiving cavity;

[0008] A coil, comprising a winding portion and a lead portion, wherein the winding portion is connected to the lead portion and is wound around the magnetic core post; a clearance gap exists between the bottom of the magnetic core post near the base plate and the winding portion, the clearance gap connecting the receiving cavity and the lead hole, the lead hole being located between the magnetic core post and the magnetic core post; the lead portion passes sequentially through the clearance gap and the lead hole.

[0009] In some embodiments, the pin portion includes a bent section and a pin section, the bent section being connected between the winding portion and the pin section, the bent section being inclined relative to the base plate, and the pin section passing through the pin hole.

[0010] In some embodiments, the bending segment is bent at least once, and the bending segment gradually moves away from the winding portion along the direction from the coil to the base plate, and the lead segment is arranged perpendicularly to the base plate.

[0011] In some embodiments, the magnetic core side post includes a side plate, a first post, and a second post. The first post and the second post are both connected to the side plate and located on the same side of the side plate. The side plate, the first post, and the second post enclose the receiving cavity. The side plate, the first post, and the second post are all mounted on the base plate and located on the same side of the base plate. The magnetic core post is connected to the side plate and is located between the first post and the second post. Two pin holes are provided, one pin hole is located between the first post and the magnetic core post, and the other pin hole is located between the second post and the magnetic core post.

[0012] In some embodiments, the first column and the second column are arranged opposite to each other, and the first column and the second column are symmetrically arranged along the centerline of the length direction of the side plate.

[0013] In some embodiments, the first column includes a first arcuate surface, the second column includes a second arcuate surface, the first arcuate surface and the second arcuate surface are disposed opposite to each other, and the distance between the first arcuate surface and the second arcuate surface gradually increases in the direction along the magnetic core to the base plate; the opposite sides of the winding portion abut against the first arcuate surface and the second arcuate surface respectively.

[0014] In some embodiments, each of the first arcuate surface and the second arcuate surface includes an upper arcuate segment and a lower arcuate segment, the upper arcuate segment connecting the lower arcuate segment, the lower arcuate segment being located between the upper arcuate segment and the base plate, the upper arcuate segment abutting against the edge of the winding portion, and the clearance gap being located between the lower arcuate segment and the winding portion.

[0015] In some embodiments, the magnetic core has a length of 80 mm, a height of 32.5 mm, and a distance of 63 mm between the two pin holes.

[0016] In some embodiments, the base plate has a receiving groove that communicates with the receiving cavity, and the winding portion is partially received in the receiving groove.

[0017] This utility model also provides a transformer, including the transformer core module described in any one of the above claims.

[0018] Compared with the prior art, in this embodiment of the utility model, the clearance gap is located between the bottom of the magnetic core side post near the base plate and the winding part, so that the lead part directly passes through the clearance gap and the lead hole in sequence. The lead part does not need to be bent multiple times to pass through the inside of the magnetic core side post and the base plate, or be bent multiple times to pass through the magnetic core boss and the base plate, thereby reducing the number of bends of the lead part and thus avoiding the breakage of the lead part during the coil assembly process. Attached Figure Description

[0019] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings do not constitute a limitation on scale.

[0020] Figure 1 This is a schematic diagram of the structure of a transformer core module provided in one embodiment of the present invention;

[0021] Figure 2 yes Figure 1 A front view of the structure of the middle magnetic core component;

[0022] Figure 3 yes Figure 1 Top view of the magnetic core component;

[0023] Figure 4 This is a schematic diagram of the structure of a transformer according to an embodiment of the present invention.

[0024] The attached figures are labeled as follows:

[0025] 100. Transformer core module; 10. Base plate; 11. Pin hole; 12. Mounting surface; 13. Receiving groove; 20. Core component; 21. Core post; 22. Core side post; 221. Receiving cavity; 222. Clearance gap; 223. Side plate; 224. First column; 2241. First arc surface; 22411. Upper arc segment; 22412. Lower arc segment; 225. Second column; 2251. Second arc surface; 30. Coil; 31. Winding part; 32. Pin part; 321. Bending section; 322. Pin section; 200. Transformer; 100a. First core module; 100b. Second core module. Detailed Implementation

[0026] To facilitate understanding of this utility model, the following section provides a more detailed description of it in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is described as "connected" to another element, it can be directly on the other element, or one or more intermediate elements can exist between them. The terms "upper," "lower," "left," "right," "upper end," "lower end," "top," and "bottom," etc., used in this specification indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention.

[0028] See Figure 1 , Figure 2 and Figure 3 , Figure 1 This is a schematic diagram of the structure of a transformer core module provided in one embodiment of the present invention; Figure 2 yes Figure 1 A front view of the structure of the middle magnetic core component; Figure 3 yes Figure 1 A top view of the structure of the magnetic core component.

[0029] An embodiment of this utility model provides a transformer core module 100, comprising: a base plate 10, a core component 20, and a coil 30. The base plate 10 has lead holes 11. The core component 20 includes a core post 21 and a side post 22. The side post 22 is mounted on the base plate 10 and has a receiving cavity 221. The core post 21 is located within the receiving cavity 221. One end of the core post 21 is mounted on the side post 22, and the other end of the core post 21 faces the receiving cavity 221. The cavity 221 has an opening; the coil 30 includes a winding portion 31 and a lead portion 32. The winding portion 31 is connected to the lead portion 32. The winding portion 31 is coiled on the magnetic core post 21. The magnetic core side post 22 has a clearance gap 222 between the bottom of the base plate 10 and the winding portion 31. The clearance gap 222 connects the receiving cavity 221 and the lead hole 11. The lead hole 11 is located between the magnetic core side post 22 and the magnetic core post 21. The lead portion 32 passes through the clearance gap 222 and the lead hole 11 in sequence.

[0030] It should be noted that in this embodiment, the coil 30 is a conduit structure. In some other embodiments, the coil 30 may also be flat or cylindrical, etc. It should also be explained that after the coil 30 is wound around the magnetic core post 21, its cross-section is a flat racetrack shape, and the cross-section of the coil 30 is the magnetic circuit area.

[0031] In this embodiment, the base plate 10 includes a mounting surface 12, and the magnetic core 20 is directly mounted on the mounting surface 12. It can be understood that the magnetic core side post 22 abuts against the mounting surface 12 to reduce the need for setting magnetic core bosses. Moreover, the clearance gap 222 is located between the bottom of the magnetic core side post 22 near the base plate 10 and the winding portion 31, so that the lead portion 32 directly passes through the clearance gap 222 and the lead hole 11 in sequence, and the lead portion 32 protrudes from the lead hole 11 for subsequent solder joint use; this arrangement means that the lead portion 32 does not need to pass through the magnetic core side post 22, nor does it need to set magnetic core bosses between the magnetic core side post 22 and the base plate 10 for the lead portion 32 to be mounted. In other words, while ensuring that the magnetic circuit area of ​​the original magnetic core 20 remains unchanged, the lead portion 32 does not need to be bent multiple times to pass through the inside of the magnetic core side post 22 and the base plate 10, or the lead portion 32 needs to be bent multiple times to pass through the magnetic core boss and the base plate 10; thereby reducing the number of bends of the lead portion 32 and thus avoiding breakage of the lead portion 32 during the assembly of the coil 30.

[0032] In one embodiment, the pin portion 32 includes a bent section 321 and a pin portion 322. The bent section 321 is connected between the winding portion 31 and the pin portion 322. The bent section 321 is inclined relative to the base plate 10, and the pin portion 322 passes through the pin hole 11.

[0033] Specifically, the pin portion 32 is bent in the bending section 321, and the clearance gap 222 provides space for the bending section 321 to be bent.

[0034] In one embodiment, the bending segment 321 is bent at least once, and the bending segment 321 gradually moves away from the winding portion 31 along the direction from the coil 30 to the base plate 10, while the lead segment 322 is arranged perpendicularly to the base plate 10.

[0035] In this embodiment, the bending segment 321 is preferably bent only once. This means that the lead portion 32 is bent at the connection between the bending segment 321 and the lead segment 322, and both the bending segment 321 and the lead segment 322 are straight structures. The purpose of this arrangement is that stress will be generated at the bending point of the lead portion 32, making it prone to breakage during assembly. Furthermore, the more times the lead portion 32 is bent, the greater the stress generated, meaning that the more bends, the greater the probability of breakage during assembly. Therefore, bending the bending segment 321 only once, compared to bending it multiple times, can ensure the strength of the lead portion 32.

[0036] Furthermore, the pin segment 322 is positioned perpendicular to the base plate 10, which facilitates the pin segment 322 passing through the pin hole 11. If the pin segment 322 passes through the pin hole 11 at an angle, the pin segment 322 is prone to collision with the hole wall of the pin hole 11, resulting in wear, and the angled pin segment 322 is not easy to pass through the pin hole 11.

[0037] In one embodiment, the magnetic core side post 22 includes a side plate 223, a first post 224, and a second post 225. The first post 224 and the second post 225 are both connected to the side plate 223 and located on the same side of the side plate 223. The side plate 223, the first post 224, and the second post 225 enclose a receiving cavity 221. The side plate 223, the first post 224, and the second post 225 are all mounted on the base plate 10 and located on the same side of the base plate 10. The magnetic core post 21 is connected to the side plate 223 and is located between the first post 224 and the second post 225. Two pin holes 11 are provided. One pin hole 11 is located between the first post 224 and the magnetic core post 21, and the other pin hole 11 is located between the second post 225 and the magnetic core post 21.

[0038] Specifically, the magnetic core post 21, side plate 223, first post 224, and second post 225 are integrated to ensure the structural stability of the magnetic core component 20. The first post 224 and second post 225 are located on the same side of the side plate 223, and are situated at opposite ends of the side plate 223. The coil 30 is housed within the receiving cavity 221. The winding portion 31 is wound along the outer wall of the magnetic core post 21 to fit onto it, and is located between the first post 224 and second post 225. Two pin portions 32 are provided, located on opposite sides of the magnetic core post 21. Each pin portion 32 passes through a corresponding pin hole 11 to ensure stable installation of the coil 30.

[0039] In one embodiment, the first column 224 and the second column 225 are arranged opposite to each other, and the first column 224 and the second column 225 are symmetrically arranged along the centerline of the length direction of the side plate 223.

[0040] Specifically, the first column 224 and the second column 225 are symmetrically arranged to simplify the structure of the magnetic core 20 and reduce production costs. Furthermore, this avoids asymmetry between the two sides of the coil 30 relative to the centerline of the side plate 223 along its length, further preventing different performance characteristics on both sides of the coil 30 during application.

[0041] In one embodiment, the first column 224 includes a first arcuate surface 2241, and the second column 225 includes a second arcuate surface 2251. The first arcuate surface 2241 and the second arcuate surface 2251 are disposed opposite to each other. In the direction from the magnetic core 20 to the base plate 10, the distance between the first arcuate surface 2241 and the second arcuate surface 2251 gradually increases. The opposite sides of the winding portion 31 abut against the first arcuate surface 2241 and the second arcuate surface 2251, respectively.

[0042] Specifically, the opposite sides of the winding portion 31 abut against the first arc-shaped surface 2241 and the second arc-shaped surface 2251, respectively. It can be understood that if the size of the winding portion 31 is increased, the coil 30 cannot be accommodated within the receiving cavity 221, and the opposite sides of the coil 30 cannot abut against the first arc-shaped surface 2241 and the second arc-shaped surface 2251. If the size of the winding portion 31 is decreased, there will be gaps between the opposite sides of the winding portion 31 and the first arc-shaped surface 2241 and the second arc-shaped surface 2251. This arrangement ensures that the size of the coil 30 is the maximum size that the receiving cavity 221 can accommodate, meaning that the cross-sectional area of ​​the coil 30 is at its maximum, thus ensuring that the magnetic circuit area of ​​the coil 30 is the maximum magnetic circuit area that can be accommodated.

[0043] The first column 224 and the second column 225 are symmetrical along the centerline of the side plate 223, and the core column 21 is located on the centerline of the side plate 223 to ensure that the two sides of the winding part 31 are symmetrical, thereby ensuring that the performance of the two sides of the coil 30 is consistent.

[0044] In one embodiment, each of the first arcuate surface 2241 and the second arcuate surface 2251 includes an upper arcuate segment 22411 and a lower arcuate segment 22412. The upper arcuate segment 22411 is connected to the lower arcuate segment 22412. The lower arcuate segment 22412 is located between the upper arcuate segment 22411 and the base plate 10. The upper arcuate segment 22411 abuts against the edge of the winding portion 31. The clearance gap 222 is located between the lower arcuate segment 22412 and the winding portion 31.

[0045] Specifically, both the first arc-shaped surface 2241 and the second arc-shaped surface 2251 are arc-shaped structures. The upper arc segment 22411 is set to fit the edge of the winding portion 31 to reduce the wear caused by friction between the winding portion 31 and the upper arc segment 22411 during installation. The lower arc segment 22412 has a clearance gap 222 between itself and the edge of the winding portion 31 to ensure that there is reserved space for bending the lead portion 32 for installation during production, and to ensure that the lead portion 32 passes through the lead hole 11 through the clearance gap 222.

[0046] In one embodiment, the length of the magnetic core 20 is 80 mm, the height of the magnetic core 20 is 32.5 mm, and the distance between the two pin holes 11 is 63 mm.

[0047] In the actual design process, the core boss was eliminated, reducing the overall height of the transformer core module 100. Simultaneously, the lower arc segment 22412 of either the first column 224 or the second column 225 was recessed relative to the upper arc segment 22411. To ensure that the cross-sectional area of ​​the first column 224 and the second column 225 remained unchanged, the length of the side plate 223 was increased to maintain the original cross-sectional area of ​​the core component 20. This arrangement aims to maintain the original size of the coil 30 and the original magnetic circuit area of ​​the transformer core module 100 while reducing the overall height of the transformer core module 100, thereby increasing the overall power density of the transformer core module 100.

[0048] Furthermore, the pin hole 11 has been changed from being located below the magnetic core side post 22 and the magnetic core boss to being located between the magnetic core side post 22 and the winding part 31, and the distance between the two pin holes 11 will also be shortened.

[0049] In one embodiment, the base plate 10 has a receiving groove 13, which is connected to the receiving cavity 221, and the winding portion 31 is partially received in the receiving groove 13.

[0050] Specifically, the receiving groove 13 is located between the two pin holes 11 and on one side of the magnetic core post 21 to accommodate the winding portion 31. It should be noted that the side of the magnetic core 20 facing away from the base plate 10 is connected to the outside. When the coil 30 is accommodated in the receiving cavity 221, one side of the coil 30 protrudes from the magnetic core 20, and the other side of the coil 30 is accommodated in the receiving groove 13. This arrangement increases the size of the largest coil 30 that can be accommodated, thereby improving the performance of the overall transformer core module 100.

[0051] This utility model also provides a transformer 200, including the transformer core module 100 described in any one of the above claims.

[0052] It should be noted that the transformer 200 includes at least one transformer core module 100.

[0053] See Figure 4 , Figure 4 This is a schematic diagram of the structure of a transformer according to an embodiment of the present invention.

[0054] In this embodiment, the transformer 200 includes a first magnetic core module 100a and a second magnetic core module 100b, which are connected to each other.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it; under the concept of this utility model, 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 the different aspects of this utility model as described above. For the sake of brevity, they are not provided in detail; although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A transformer core module, characterized in that, include: The base plate has pin holes; A magnetic core component, comprising a core post and a side post, wherein the side post is mounted on the base plate, the side post has a receiving cavity, the core post is located within the receiving cavity, one end of the core post is mounted on the side post, and the other end of the core post faces the opening of the receiving cavity; A coil, comprising a winding portion and a lead portion, wherein the winding portion is connected to the lead portion and is wound around the magnetic core post; a clearance gap exists between the bottom of the magnetic core post near the base plate and the winding portion, the clearance gap connecting the receiving cavity and the lead hole, the lead hole being located between the magnetic core post and the magnetic core post; the lead portion passes sequentially through the clearance gap and the lead hole.

2. The transformer core module according to claim 1, characterized in that, The pin portion includes a bent section and a pin section. The bent section is connected between the winding portion and the pin section. The bent section is inclined relative to the base plate, and the pin section passes through the pin hole.

3. The transformer core module according to claim 2, characterized in that, The bending segment is bent at least once, and the bending segment gradually moves away from the winding portion along the direction from the coil to the base plate, and the lead segment is arranged perpendicular to the base plate.

4. The transformer core module according to claim 1, characterized in that, The magnetic core side post includes a side plate, a first post, and a second post. The first post and the second post are both connected to the side plate and located on the same side of the side plate. The side plate, the first post, and the second post enclose the receiving cavity. The side plate, the first post, and the second post are all mounted on the base plate and located on the same side of the base plate. The magnetic core post is connected to the side plate and is located between the first post and the second post. There are two pin holes, one pin hole is located between the first post and the magnetic core post, and the other pin hole is located between the second post and the magnetic core post.

5. The transformer core module according to claim 4, characterized in that, The first column and the second column are arranged opposite to each other, and the first column and the second column are symmetrically arranged along the centerline of the length direction of the side plate.

6. The transformer core module according to claim 4, characterized in that, The first column includes a first arc-shaped surface, and the second column includes a second arc-shaped surface. The first arc-shaped surface and the second arc-shaped surface are arranged opposite to each other. In the direction from the magnetic core to the base plate, the distance between the first arc-shaped surface and the second arc-shaped surface gradually increases. The opposite sides of the winding portion abut against the first arc-shaped surface and the second arc-shaped surface, respectively.

7. The transformer core module according to claim 6, characterized in that, Each of the first arcuate surface and the second arcuate surface includes an upper arcuate segment and a lower arcuate segment, the upper arcuate segment connecting the lower arcuate segment, the lower arcuate segment being located between the upper arcuate segment and the base plate, the upper arcuate segment abutting against the edge of the winding portion, and the clearance gap being located between the lower arcuate segment and the winding portion.

8. The transformer core module according to claim 4, characterized in that, The magnetic core has a length of 80mm, a height of 32.5mm, and a distance of 63mm between the two pin holes.

9. The transformer core module according to claim 1, characterized in that, The base plate has a receiving groove, which is connected to the receiving cavity, and the winding portion is partially received in the receiving groove.

10. A transformer, characterized in that, Includes the transformer core module as described in any one of claims 1 to 9.

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