Magnetic assembly

Abstract

The present application provides a magnetic assembly. The magnetic assembly has at least one first air gap, at least part of each first air gap is located between a first projection line and a second projection line, and another at least part of each first air gap exceeds the third projection line and the fourth projection line from at least one of the third projection line and the fourth projection line between the third projection line and the fourth projection line, that is, there is an air gap between the end of the winding and the magnetic column and in the radial direction of the magnetic column. The dielectric constant between the first end and the second end of the winding of the magnetic assembly of the present application and the magnetic column is low, so that the electric field distribution of the first end and the second end can be improved and the partial discharge extinction voltage is improved, while achieving the effect of reducing the volume and cost of the magnetic assembly. Also, there is no need to additionally set a voltage equalizing ring, so the assembly and process of the magnetic assembly of the present application are relatively simple.

Description

Technical Field

[0001] This invention relates to a magnetic component, and more particularly to a magnetic component with uniform electric field distribution at the ends of the winding, high partial discharge extinction voltage, small size, low cost, and simple assembly and manufacturing process. Background Technology

[0002] Currently, magnetic components such as dry-type impregnated reactors or transformers have many advantages, such as no need for mold making, flexible design, strong overload capacity, short production cycle and low cost, and are therefore widely used.

[0003] Traditional dry-type impregnated reactors or transformers and other magnetic components have a magnetic core, windings, and support bars. The windings are arranged around a magnetic column, and the support bars are located between the magnetic column and the windings to support the windings on the magnetic column. The length of the support bars in the axial direction parallel to the magnetic column is greater than the line connecting the two ends of the winding, which is the longest distance of the winding in the axial direction parallel to the magnetic column. There is no air gap between the winding ends and the magnetic column in the radial direction of the magnetic column. The windings are open to the air, exposing the ends of the windings to the air. Due to the low breakdown field strength of air and the high electric field strength of the ends themselves, partial discharge is prone to occur at the ends of the windings. This can cause the insulation material covering the windings or the insulation layer in contact with the windings to crack or even break down, thus leading to an accident.

[0004] Currently, traditional dry-type impregnated reactors or transformers primarily address partial discharge issues at the winding ends by increasing the partial discharge extinction voltage using three main methods. The first method involves increasing the thickness of the support bars to increase the distance between the winding and the core. However, this increases the size and cost of the dry-type impregnated reactor or transformer, thus affecting its cost and power density. The second method uses support bars with low dielectric constants, such as PTFE and polypropylene. However, PTFE is expensive, and polypropylene has poor mechanical strength, so suitable low dielectric constant materials are currently unavailable. The third method involves adding an equalizing ring to the winding ends, but this complicates the winding welding and assembly process.

[0005] In view of this, how to develop a magnetic component that can improve the shortcomings of the existing technology is a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0006] The purpose of this invention is to provide a magnetic component that has advantages such as improving the electric field distribution at the ends of the winding, increasing the partial discharge extinction voltage, smaller size, lower cost, and simpler assembly and manufacturing process.

[0007] To achieve the above objectives, a preferred embodiment of the present invention provides a magnetic component comprising a magnetic core, at least one support bar assembly, a winding, and at least one first air gap. The magnetic core has a magnetic column. At least one support bar assembly is disposed on the magnetic column. The winding is sleeved on the at least one support bar assembly and has a first end, a second end, and a first connecting portion. The first end and the second end are connected to opposite sides of the first connecting portion. The first end has a first endpoint and a second endpoint, which are connected to each other. The second endpoint is connected to the first connecting portion, and a first projection line is formed between the projection point of the second endpoint on the magnetic column and the second endpoint. The second end has a third endpoint and a fourth endpoint, which are connected to each other. The fourth endpoint is connected to the first connecting portion, and a second projection line is formed between the projection point of the fourth endpoint on the magnetic column and the fourth endpoint. The length of the line connecting the first endpoint and the third endpoint is the longest distance of the winding parallel to the axial direction of the magnetic column. A third projection line is formed between the projection point of the first endpoint on the magnetic column and the first endpoint. A fourth projection line is formed between the projection point of the third endpoint on the magnetic column and the third endpoint. At least one first air gap is defined by at least one support assembly and is located between the winding and the magnetic column. At least a portion of the at least one first air gap is located between the first projection line and the second projection line, and at least another portion of the at least one first air gap extends beyond the third projection line and the fourth projection line from at least one of the third projection line and the fourth projection line.

[0008] To achieve the above objectives, another preferred embodiment of the present invention provides a magnetic component comprising a magnetic core, at least one first support bar assembly, a first winding, at least one second support bar assembly, a second winding, and at least one first air gap. The magnetic core has magnetic pillars. At least one first support bar assembly is disposed on the magnetic pillars. The first winding is sleeved on the at least one first support bar assembly. At least one second support bar assembly is disposed on the first winding. The second winding is sleeved on at least one second support assembly and has a first end, a second end, and a first connecting portion. The first end and the second end are connected to opposite sides of the first connecting portion. The first end has a first endpoint and a second endpoint, which are connected to each other. The second endpoint is connected to the first connecting portion, and the projection of the second endpoint onto the projection point of the magnetic post forms a first projection line between the second endpoint and the second endpoint. The second end has a third endpoint and a fourth endpoint, which are connected to each other. The fourth endpoint is connected to the first connecting portion, and the projection of the fourth endpoint onto the projection point of the magnetic post forms a second projection line between the fourth endpoint and the fourth endpoint. The length of the line connecting the first endpoint and the third endpoint is the longest distance of the winding parallel to the axial direction of the magnetic post. The projection of the first endpoint onto the projection point of the magnetic post forms a third projection line between the first endpoint and the first endpoint. The projection of the third endpoint onto the projection point of the magnetic post forms a fourth projection line between the third endpoint and the third endpoint. The at least one first air gap is defined by at least one second support assembly and is located between the second winding and the first winding, wherein at least a portion of the at least one first air gap is located between the first projection line and the second projection line, and at least another portion of the at least one first air gap extends beyond the third projection line and the fourth projection line from at least one of the third projection line and the fourth projection line.

[0009] The beneficial effects of the present invention are that the magnetic component of the present invention has at least one first air gap, at least a portion of each first air gap is located between the first projection line and the second projection line, and at least another portion of each first air gap extends beyond the third projection line and the fourth projection line from at least one of the third projection line and the fourth projection line, which means that there is an air gap between the end of the winding and the magnetic post. Therefore, the dielectric constant between the first end and the second end of the winding of the magnetic component of the present invention and the magnetic post is low, which improves the electric field distribution of the first end and the second end, increases the partial discharge extinction voltage, and achieves the effect of reducing the size and cost of the magnetic component. It also eliminates the need for an additional voltage equalization ring. Therefore, the assembly and process of the magnetic component of the present invention are relatively simple. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of the magnetic component according to the first preferred embodiment of the present invention.

[0011] Figure 2 This is a schematic diagram of the structure of the magnetic component according to the second preferred embodiment of the present invention.

[0012] Figure 3This is a schematic diagram of the structure of the magnetic component according to the third preferred embodiment of the present invention.

[0013] Figure 4 This is a schematic diagram of the structure of the magnetic component according to the fourth preferred embodiment of the present invention.

[0014] Figure 5 This is a schematic diagram of the structure of the magnetic component according to the fifth preferred embodiment of the present invention.

[0015] Figure 6 This is a schematic diagram of the structure of the magnetic component according to the sixth preferred embodiment of the present invention.

[0016] Figure 7 This is a schematic diagram of the structure of the magnetic component in the seventh preferred embodiment of the present invention.

[0017] Figure 8 This is a schematic diagram of the structure of the magnetic component in the eighth preferred embodiment of the present invention.

[0018] Figure 9 This is a schematic diagram of the structure of the magnetic component in the ninth preferred embodiment of the present invention.

[0019] The attached figures are labeled as follows:

[0020] 1, 1a, 1b, 1c, 1d, 1e, 1f, 1g, 1h: Magnetic components

[0021] 2: Magnetic column

[0022] Y: Axial direction

[0023] 21: Top surface

[0024] 22: Bottom surface

[0025] 23: Sidewall

[0026] 3: Support bar assembly, second support bar assembly

[0027] 31: First support bar

[0028] 31a: Top surface

[0029] 31b: Bottom surface

[0030] 32: Second support bar

[0031] 32a: Top surface

[0032] 32b: Bottom surface

[0033] 331: Inner side

[0034] 332: Outer side

[0035] 333: Top surface

[0036] 334: Bottom surface

[0037] 34: Third support bar

[0038] 34a: Top surface

[0039] 34b: Bottom surface

[0040] 4: Winding, Second Winding

[0041] 41: First end

[0042] 411: First endpoint

[0043] 412: Second endpoint

[0044] 42: Second end

[0045] 421: Third endpoint

[0046] 422: Fourth endpoint

[0047] 43: First connecting part

[0048] m: First projection line

[0049] n: Second projection line

[0050] o: Third projection line

[0051] p: Fourth projection line

[0052] 5: First air gap

[0053] 51: First upper air gap

[0054] 52: First lower air gap

[0055] 61: First insulating layer

[0056] 62: Second insulating layer

[0057] 63: Third insulation layer

[0058] 64: Fourth Insulation Layer

[0059] h1: First depth

[0060] h2: Second depth

[0061] 7: First support bar assembly

[0062] 71: Fourth support bar

[0063] 71a: Top surface

[0064] 71b: Bottom surface

[0065] 72: Fifth support bar

[0066] 72a: Top surface

[0067] 72b: Bottom surface

[0068] 73: Sixth support bar

[0069] 73a: Top surface

[0070] 73b: Bottom surface

[0071] 8: First winding

[0072] 81: Third end

[0073] 811: Fifth endpoint

[0074] 812: Sixth endpoint

[0075] 82: Fourth end

[0076] 821: The Seventh Endpoint

[0077] 822: Eighth endpoint

[0078] 83: Second connecting part

[0079] 9: Second air gap

[0080] 91: Second upper air gap

[0081] 92: Second lower air gap

[0082] q: Fifth projection line

[0083] r: Sixth projection line

[0084] s: Seventh projection line

[0085] t: Eighth projection line Detailed Implementation

[0086] Some typical embodiments embodying the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention can be varied in different ways without departing from the scope of the invention, and the description and drawings herein are for illustrative purposes only and not for limiting the invention.

[0087] Please see Figure 1 This is a schematic diagram of the structure of the magnetic component in the first preferred embodiment of the present invention. Figure 1As shown, the magnetic component 1 of this embodiment is suitable for dry-type impregnated reactors or transformers, and includes a magnetic core, at least one support bar assembly 3, a winding 4, at least one first air gap 5, a first insulating layer 61, and a second insulating layer 62. The magnetic core can be an EI core, a UI core, an EE core, or a UU core, etc. The magnetic core has at least one magnetic post 2, wherein the shape of the magnetic post 2 can be, but is not limited to, a cuboid. The magnetic post 2 has sidewalls 23, and the sidewalls 23 are sequentially arranged around the magnetic post 2 in the axial direction Y. The support bar assembly 3 is used for mounting the winding 4 to support the winding 4. Multiple support bar assemblies 3 can be arranged to surround the corresponding sidewalls 23 of the magnetic post 2, or a single support bar assembly 3 can be arranged to completely surround the sidewalls 23 of the magnetic post 2. In this embodiment, when the magnetic post 2 is a cuboid, it includes four sidewalls. The magnetic assembly 1 includes four support bar assemblies 3 arranged to surround the four sidewalls 23 of the magnetic post 2, or four support bar assemblies 3 arranged to surround the four edges of the sidewalls 23 of the magnetic post 2. However, for ease of explanation... Figure 1 The diagram only illustrates two of the four support bar assemblies 3 symmetrically arranged. In other embodiments, when the magnetic column 2 is a cuboid, the magnetic assembly 1 includes two or more support bar assemblies 3 respectively arranged around the side wall 23 or at the edge of the magnetic column 2. In other embodiments, the magnetic column 2 can be a cylinder, and the magnetic assembly 3 includes two or more support bar assemblies 3 respectively arranged around the side wall 23 of the magnetic column 2.

[0088] In this embodiment, the winding 4 has a first end 41, a second end 42, and a first connecting portion 43. The connecting portion 43 has a top, a bottom, an outer peripheral side, and an inner peripheral side. The first end 41 and the second end 42 of the winding 4 are respectively connected to the top and bottom of the first connecting portion 43. A first insulating layer 61 is disposed around the inner peripheral side of the winding 4, wherein the first end 41 and the second end 42 are not in contact with the first insulating layer 61, and at least a portion of the inner peripheral side of the first connecting portion 43 is in contact with the first insulating layer 61. The first end 41 has a first endpoint 411 and a second endpoint 412. The first endpoint 411 is the endpoint of the first end 41 furthest from the top of the first connecting portion 43, and the first endpoint 411 and the second endpoint 412 are connected to each other. The line connecting the first endpoint 411 and the second endpoint 412 is an inclined segment or a curved segment, such that the first end 41 forms a chamfer through the inclined segment or the curved segment. The second endpoint 412 is connected to the top of the first connecting portion 43, and a first projection line m is formed between the projection point of the second endpoint 412 onto the magnetic column 2 and the second endpoint 412. The second end portion 42 has a third endpoint 421 and a fourth endpoint 422. The third endpoint 421 is the endpoint of the second end portion 42 furthest from the bottom of the first connecting portion 43, and the third endpoint 421 and the fourth endpoint 422 are connected to each other. The line connecting the third endpoint 421 and the fourth endpoint 422 is an inclined segment or a curved segment, such that the second end portion 42 forms a chamfer through the inclined segment or curved segment. The fourth endpoint 422 is connected to the bottom of the first connecting portion 43, and a second projection line n is formed between the projection point of the fourth endpoint 422 onto the magnetic column 2 and the fourth endpoint 422. In some embodiments, the chamfers formed by the first end portion 41 and the chamfers formed by the second end portion 42 can be triangular, trapezoidal, semi-circular, or fan-shaped, respectively.

[0089] The length of the line connecting the first endpoint 411 of the first end 41 and the third endpoint 421 of the second end 42 of the winding 4 is the longest distance of the winding 4 in the axial direction Y parallel to the magnetic column 2. The projection point of the first endpoint 411 onto the magnetic column 2 forms a third projection line o between the first endpoint 411 and the first endpoint 411. The projection point of the third endpoint 421 onto the magnetic column 2 forms a fourth projection line p between the third endpoint 421 and the third endpoint 421. The vertical distance between the third projection line o and the fourth projection line p is greater than the vertical distance between the first projection line m and the second projection line n. The direction of the vertical distance referred to here is parallel to the axial direction Y of the magnetic column 2. The vertical distance mentioned later has the same meaning and will not be repeated here. The second insulating layer 62 is disposed around the outer periphery of the winding 4 to isolate the electrical connection between the winding 4 and external components. The first end 41 and the second end 42 of the winding 4 do not contact the second insulating layer 62, while at least a portion of the outer periphery of the first connecting portion 43 is in contact with the second insulating layer 62. In this embodiment, the first insulating layer 61 and the second insulating layer 62 are NOMEX paper or composite insulating paper, etc. It should be noted that in various possible embodiments of the magnetic component of the present invention, the inner circumferential side of the winding 4 may be provided with the first insulating layer 61 and / or the outer circumferential side of the winding 4 may be provided with the second insulating layer 62; or the inner circumferential side of the winding 4 may not be provided with the first insulating layer 61 and / or the outer circumferential side of the winding 4 may not be provided with the second insulating layer 62, so that the winding 4 can be directly wrapped around the support bar assembly 3, which will not be described in detail below.

[0090] The number and position of the first air gaps 5 correspond one-to-one with the number and position of the support bar assemblies 3. For example, in this embodiment, the magnetic assembly 1 includes four support bar assemblies 3 and four first air gaps 5. For ease of explanation, Figure 1 The diagram only illustrates two support bar assemblies 3 and two corresponding first air gaps 5. Each first air gap 5 is defined by at least one adjacent support bar assembly 3, and each first air gap 5 is located between the winding 4 and the magnetic post 2. At least a portion of each first air gap 5 is located between the first projection line m and the second projection line n, and at least another portion of each first air gap 5 extends beyond the third projection line o and the fourth projection line p from at least one of the third projection line o and the fourth projection line p.

[0091] As can be seen from the above, the magnetic component 1 of the present invention has at least one first air gap 5. At least a portion of each first air gap 5 is located between the first projection line m and the second projection line n, and at least another portion of each first air gap 5 extends beyond the third projection line o and the fourth projection line p from at least one of the third projection line o and the fourth projection line p. This means that there is an air gap between the end of the winding 4 and the magnetic column 2 in the radial direction of the magnetic column 2, which reduces the dielectric constant of the end of the winding 4. Therefore, compared with the conventional magnetic component where the end of the winding has a support bar and no air gap, the dielectric constant between the first end 41 and the second end 42 of the winding 4 and the magnetic column 2 of the magnetic component 1 of the present invention is lower, and the electric field distribution of the first end 41 and the second end 42 is improved, the partial discharge extinction voltage is increased, and the volume and cost of the magnetic component 1 are reduced. There is also no need to set an equalizing ring. Therefore, the assembly and process of the magnetic component 1 of the present invention are relatively simple.

[0092] Please continue reading. Figure 1 In this embodiment, each first air gap 5 of the magnetic component 1 includes a first upper air gap 51 and a first lower air gap 52. The first upper air gap 51 is adjacent to the first end 41 of the winding 4 relative to the first lower air gap 52, and the first lower air gap 52 is adjacent to the second end 42 of the winding 4 relative to the first upper air gap 51. Each support bar assembly 3 of the magnetic component 1 in this embodiment includes a first support bar 31 and a second support bar 32, wherein the cross-section of the first support bar and / or the second support bar 32 along the radial direction of the magnetic post 2 can be L-shaped, rectangular, or square, etc. The first support bar 31 is disposed on the magnetic post 2 and located between the magnetic post 2 and the second support bar 32. Furthermore, the first support bar 31 has a top surface 31a and a bottom surface 31b disposed opposite to each other. The second support bar 32 is disposed on the first support bar 31 and located between the first support bar 31 and the winding 4. The second support bar 32 is used for mounting the winding 4. Furthermore, the second support bar 32 has a top surface 32a and a bottom surface 32b disposed opposite to each other. The top surface 32a of the second support bar 32 is more adjacent to the top surface 31a of the first support bar 31 relative to the bottom surface 32b, and the bottom surface 32b of the second support bar 32 is more adjacent to the bottom surface 31b of the first support bar 31 relative to the top surface 32a. In some embodiments, the first support bar 31 and the second support bar 32 can be two independent support bars. In other embodiments, the first support bar 31 and the second support bar 32 can be integrally formed.

[0093] The top surface 32a of the second support bar 32 protrudes beyond the top surface 31a of the first support bar 31, such that the magnetic column 2, the top surface 31a of the first support bar 31, and the second support bar 32 together define the first upper air gap 51, wherein at least a portion of the first upper air gap 51 is located between the first projection line m and the top surface 31a of the first support bar 31 and between the first projection line m and the second projection line n, and at least another portion of the first upper air gap 51 extends beyond the third projection line o and between the third projection line o and the fourth projection line p. The bottom surface 32b of the second support bar 32 protrudes beyond the bottom surface 31b of the first support bar 31, such that the magnetic column 2, the bottom surface 31b of the first support bar 31, and the second support bar 32 together define the first lower air gap 52, wherein at least a portion of the first lower air gap 52 is located between the second projection line n and the bottom surface 31b of the first support bar 31 and between the first projection line m and the second projection line n, and at least another portion of the first lower air gap 52 extends beyond the third projection line o and the fourth projection line p from below the fourth projection line p.

[0094] In this embodiment, the distance between the projection point of the first endpoint 411 of the first end of the winding 4 onto the magnetic column 2 and the projection point of the second endpoint 412 onto the magnetic column 2 is less than the depth of the first upper air gap 51. That is, the vertical distance between the first projection line m and the third projection line o is less than the depth of the first upper air gap 51, and the depth of the first upper air gap 51 is parallel to the axial direction Y of the magnetic column 2. The distance between the projection point of the third endpoint 421 of the second end of the winding 4 onto the magnetic column 2 and the projection point of the fourth endpoint 422 onto the magnetic column 2 is less than the depth of the first lower air gap 52. That is, the vertical distance between the fourth projection line p and the second projection line n is less than the depth of the first lower air gap 52, and the depth of the first lower air gap 52 is parallel to the axial direction Y of the magnetic column 2.

[0095] The following will further illustrate various possible embodiments of the magnetic component of the present invention. Since the magnetic components of the following embodiments also have the technical features of the magnetic component 1 of the first embodiment (at least a portion of each first air gap 5 is located between the first projection line m and the second projection line n, and at least another portion of each first air gap 5 extends beyond the third projection line o and the fourth projection line p from at least one of the third projection line o and the fourth projection line p), they all have the effects of the magnetic component 1 of the first embodiment, and will not be repeated below.

[0096] Please see Figure 2 This is a schematic diagram of the structure of the magnetic component in the second preferred embodiment of the present invention. Figure 2 As shown, the magnetic component 1a in this embodiment includes a magnetic core, at least one support bar assembly 3, a winding 4, and at least one first air gap 5, wherein the structure and function of the magnetic core's magnetic pillar 2 and the winding 4 are similar to those of [other components]. Figure 1The magnetic core 2 and winding 4 shown are represented by the same reference numerals, and their structures and functions are similar, so they will not be described again. In this embodiment, the support bar assembly 3 includes only a single support bar. The cross-section of the support bar along the radial direction of the magnetic core 2 can be L-shaped, rectangular, or square, etc. The support bar has an inner side 331, an outer side 332, a top surface 333, and a bottom surface 334. The inner side 331 and outer side 332 of the support bar are arranged opposite each other, and the top surface 333 and bottom surface 334 of the support bar are arranged opposite each other and located between the inner side 331 and outer side 332. The top surface 333 of the support bar is adjacent to the first end 41 of the winding 4 relative to the bottom surface 334 to form the top surface of the support bar, and the bottom surface 334 is adjacent to the second end 42 of the winding 4 relative to the top surface 333 to form the bottom surface of the support bar. The inner side 331 of the support bar is disposed on the magnetic core 2, and the winding 4 is disposed on the outer side 332 of the support bar. The first air gap 5 in this embodiment also includes a first upper air gap 51 and a first lower air gap 52, compared to Figure 1 The first upper air gap 51 and the first lower air gap 52 are defined in this embodiment by at least the magnetic column 2, the top surface 333 of the support bar, and the winding 4. In other words, the first upper air gap 51 in this embodiment is formed by at least the magnetic column 2, the top surface of the support bar, and the winding 4. The first lower air gap 52 is defined by at least the magnetic column 2, the bottom surface 334 of the support bar, and the winding 4. In other words, the first lower air gap 52 in this embodiment is formed by at least the magnetic column 2, the bottom surface of the support bar, and the winding 4. In this embodiment, at least a portion of the first upper air gap 51 is located between the first projection line m and the top surface 333 of the support bar, and further between the first projection line m and the second projection line n. At least another portion of the first upper air gap 51 extends beyond the third projection line o and between the third projection line o and the fourth projection line p. Furthermore, at least a portion of the first lower air gap 52 is located between the second projection line n and the bottom surface 334 of the support bar, and further between the first projection line m and the second projection line n. At least another portion of the first lower air gap 52 extends beyond the third projection line o and the fourth projection line p from below the fourth projection line p.

[0097] In this embodiment, the distance between the top surface 333 and the bottom surface 334 of the support bar constitutes the length of the support bar. The length of the support bar is greater than 80% of the length of the line connecting the first end point 411 of the first end 41 of the winding 4 and the third end point 421 of the second end 42, and less than the distance between the projection point of the second end point 412 of the winding 4 onto the magnetic post 2 and the projection point of the fourth end point 422 onto the magnetic post 2. The length of the support bar is parallel to the axial direction Y of the magnetic post 2 to achieve basic support and prevent the winding 4 from slipping off the support bar. This results in a lower dielectric constant between the first end 41 and the second end 42 of the winding 4 and the magnetic post 2, improves the electric field distribution of the first end 41 and the second end 42 of the winding 4, increases the local extinction voltage, reduces the volume and cost of the magnetic component 1a, and simplifies the assembly and manufacturing process of the magnetic component 1a.

[0098] Please see Figure 3 This is a schematic diagram of the structure of the magnetic component in the third preferred embodiment of the present invention. Figure 3 As shown, the magnetic component 1b in this embodiment includes a magnetic core, at least one support bar assembly 3, a winding 4, and at least one first air gap 5, wherein the structure and function of the magnetic core's magnetic pillar 2 and the winding 4 are similar to those of [other components]. Figure 1 The magnetic core, including the magnetic post 2 and winding 4, is shown here. Since they share similar designations, their structures and functions are not described in detail here. In this embodiment, the support bar assembly 3 comprises only a single support bar. The support bar has an inner side 331, an outer side 332, a top surface 333, and a bottom surface 334. The inner side 331 and outer side 332 of the support bar are arranged opposite to each other, and the top surface 333 and bottom surface 334 are arranged opposite to each other and located between the inner side 331 and outer side 332. The top surface 333 of the support bar is adjacent to the first end 41 of the winding 4 relative to the bottom surface 334 to form the top surface of the support bar, and the bottom surface 334 is adjacent to the second end 42 of the winding 4 relative to the top surface 333 to form the bottom surface of the support bar. The support bar also includes a top region and a bottom region. The top region is formed by a portion of the support bar adjacent to the top surface, and the bottom region is formed by a portion of the support bar adjacent to the bottom surface. The inner side 331 of the support bar is disposed on the magnetic post 2, and the winding 4 is disposed on the outer side 332 of the support bar. In this embodiment, the first air gap 5 is formed by hollowing out a portion of the sidewall of the support bar, and each first air gap 5 includes a single first upper air gap 51 and a single first lower air gap 52, compared to... Figure 1The first upper air gap 51 and the first lower air gap 52 are provided. In this embodiment, the first upper air gap 51 is located in the top region of the corresponding support bar and adjacent to the top surface 333, and the first lower air gap 52 is located in the bottom region of the corresponding support bar and adjacent to the bottom surface 334. In this embodiment, at least a portion of the first upper air gap 51 is located between the first projection line m and the second projection line n, and at least another portion of the first upper air gap 51 extends above the third projection line o and beyond the third projection line o and the fourth projection line p. At least a portion of the first lower air gap 52 is located between the first projection line m and the second projection line n, and at least another portion of the first lower air gap 52 extends below the fourth projection line p and beyond the third projection line o and the fourth projection line p. In some embodiments, the inner side 331 of the support bar is hollowed out to form the first upper air gap 51 and the first lower air gap 52, such that the first upper air gap 51 is located in the top region of the corresponding support bar and adjacent to the top surface 333, and the first lower air gap 52 is located in the bottom region of the corresponding support bar and adjacent to the bottom surface 334.

[0099] Please see Figure 4 This is a schematic diagram of the structure of the magnetic component in the fourth preferred embodiment of the present invention. Figure 4 As shown, the magnetic component 1c of this embodiment includes a magnetic core, at least one support bar assembly 3, a winding 4, and at least one first air gap 5, wherein the structure and function of the magnetic core's magnetic pillar 2 and the winding 4 are similar to those of [other components]. Figure 1The magnetic core 2 and winding 4 shown are represented by the same reference numerals, and their structures and functions are similar, so they will not be described again. In this embodiment, the support bar assembly 3 contains only a single support bar. The length of the support bar in the axial direction Y parallel to the magnetic core 2 is greater than or equal to the length of the line connecting the first end point 411 and the third end point 421 of the winding 4. The support bar has an inner side 331, an outer side 332, a top surface 333, and a bottom surface 334. The inner side 331 and the outer side 332 of the support bar are arranged opposite to each other, and the top surface 333 and the bottom surface 334 of the support bar are arranged opposite to each other and located between the inner side 331 and the outer side 332. The top surface 333 of the support bar is adjacent to the first end point 41 of the winding 4 relative to the bottom surface 334 to form the top surface of the support bar. The bottom surface 334 of the support bar is adjacent to the second end point 42 of the winding 4 relative to the top surface 333 to form the bottom surface of the support bar. The inner side 331 of the support bar is disposed on the magnetic column 2, and the winding 4 is disposed on the outer side 332 of the support bar. In this embodiment, the first air gap 5 includes at least one first upper air gap 51 and at least one first lower air gap 52. At least one first upper air gap 51 is formed by hollowing out a portion of the support bar from its top surface toward its bottom surface. The shape of the hollowed-out portion in the support bar is not limited, and at least one first upper air gap 51 has a first depth h1 parallel to the axial direction Y of the magnetic column 2. The number of at least one first upper air gap 51 can be one or more. When the number of at least one first upper air gap 51 is one, the first upper air gap 51 has a first depth h1 parallel to the axial direction Y of the magnetic column 2. When the number of at least one first upper air gap 51 is multiple, each first upper air gap 51 may have a first depth h1 parallel to the axial direction Y of the magnetic column 2, or at least one of the multiple first upper air gaps 51 may have a first depth h1 parallel to the axial direction Y of the magnetic column 2. The distance between the projection point of the first end point 411 of the first end of the winding 4 onto the magnetic column 2 and the projection point of the second end point 412 of the first end of the winding 4 onto the magnetic column 2 is less than a first depth h1, that is, the vertical distance between the first projection line m and the third projection line o is less than the first depth h1. At least one lower air gap 52 is formed by hollowing out a portion of the support bar from the bottom surface to the top surface of the support bar, and at least one first lower air gap 52 has a second depth h2 parallel to the axial direction Y of the magnetic column 2, wherein the number of at least one first lower air gap 52 is one or more. When the number of at least one first lower air gap 52 is one, the first lower air gap 52 has a second depth h2 parallel to the axial direction Y of the magnetic column 2. When there are multiple first lower air gaps 52, each first lower air gap 52 may have a second depth h2 parallel to the axial direction Y of the magnetic column 2, or at least one of the multiple first lower air gaps 52 may have a second depth h2 parallel to the axial direction Y of the magnetic column 2.The distance between the projection point of the third endpoint 421 of the second end 42 of the winding 4 onto the magnetic column 2 and the projection point of the fourth endpoint 422 of the second end 42 onto the magnetic column 2 is less than the second depth h2, that is, the vertical distance between the fourth projection line p and the second projection line n is less than the second depth h2. In this embodiment, the sum of the first depth h1 of the first upper air gap 51 and the second depth h2 of the first lower air gap 52 is less than the length of the support assembly 3 in the axial direction Y parallel to the magnetic column 2. In this embodiment, each first upper air gap 51 is exposed to the top surface of the support, that is, each first upper air gap 51 is exposed to the top surface 333 of the support, while each first lower air gap 52 is exposed to the bottom surface of the support, that is, each first lower air gap 52 is exposed to the bottom surface 334 of the support.

[0100] Please see Figure 5 This is a schematic diagram of the structure of the magnetic component in the fifth preferred embodiment of the present invention. Figure 4 As shown, the magnetic component 1d in this embodiment includes a magnetic core, at least one support bar assembly 3, a winding 4, and at least one first air gap 5, wherein the structure and function of the magnetic core's magnetic pillar 2 and the winding 4 are similar to those of [other components]. Figure 1The magnetic core 2 and winding 4 shown are represented by the same reference numerals, and their structures and functions are similar, so they will not be described again. In this embodiment, the support bar assembly 3 contains only a single support bar. The length of the support bar in the axial direction Y parallel to the magnetic core 2 is greater than the length of the line connecting the first end point 411 and the third end point 421 of the winding 4. The support bar has an inner side 331, an outer side 332, a top surface 333, and a bottom surface 334. The inner side 331 and the outer side 332 of the support bar are arranged opposite to each other, and the top surface 333 and the bottom surface 334 of the support bar are arranged opposite to each other and located between the inner side 331 and the outer side 332. The top surface 333 of the support bar is adjacent to the first end point 41 of the winding 4 relative to the bottom surface 334 to form the top surface of the support bar, and the bottom surface 334 of the support bar is adjacent to the second end point 42 of the winding 4 relative to the top surface 333 to form the bottom surface of the support bar. The inner side 331 of the support bar is disposed on the magnetic column 2, and the winding 4 is disposed on the outer side 332 of the support bar. In this embodiment, at least one first upper air gap 51 and at least one first lower air gap 52 are formed by hollowing out part of the side wall of the support bar. At least one first upper air gap 51 has a first depth h1 parallel to the axial direction Y of the magnetic column 2, wherein the number of at least one first upper air gap 51 is single or multiple. When the number of at least one first upper air gap 51 is multiple, each first upper air gap 51 has a first depth h1 parallel to the axial direction Y of the magnetic column 2, or at least one of the multiple first upper air gaps 51 has a first depth h1 parallel to the axial direction Y of the magnetic column 2, and the distance between the projection point of the first end point 411 of the first end 41 of the winding 4 onto the magnetic column 2 and the projection point of the second end point 412 of the first end 41 onto the magnetic column 2 is less than the first depth h1, that is, the vertical distance between the first projection line m and the third projection line o is less than the first depth h1. At least one first lower air gap 52 has a second depth h2 parallel to the axial direction Y of the magnetic column 2, wherein the number of at least one first lower air gap 52 can be single or multiple. When the number of at least one first lower air gap 52 is multiple, each first lower air gap 52 has a second depth h2 parallel to the axial direction Y of the magnetic column 2, or at least one of the multiple first lower air gaps 52 has a second depth h2 parallel to the axial direction Y of the magnetic column 2. The distance between the projection point of the third end point 421 of the second end 42 of the winding 4 onto the magnetic column 2 and the projection point of the fourth end point 422 of the second end 42 onto the magnetic column 2 is less than the second depth h2, that is, the vertical distance between the fourth projection line p and the second projection line n is less than the second depth h2. In this embodiment, the sum of the first depth h1 of the first upper air gap 51 and the second depth h2 of the first lower air gap 52 is less than the length of the support assembly 3 parallel to the axial direction Y of the magnetic column 2. In this embodiment, each first upper air gap 51 is not exposed to the top surface of the support bar but is formed between the top and bottom surfaces of the support bar, and each first lower air gap 52 is not exposed to the bottom surface of the support bar but is formed between the top and bottom surfaces of the support bar.

[0101] Please see Figure 6 This is a schematic diagram of the structure of the magnetic component in the sixth preferred embodiment of the present invention. Figure 6 As shown, the magnetic component 1e in this embodiment includes a magnetic core, at least one support bar assembly 3, a winding 4, and at least one first air gap 5, wherein the structure and function of the magnetic core's magnetic post 2 and the winding 4 are similar to those of [other components]. Figure 1The magnetic core 2 and winding 4 shown are represented by the same reference numerals, and their structures and functions are similar, so they will not be described again. In this embodiment, the support bar assembly 3 contains only a single support bar. The length of the support bar in the axial direction Y parallel to the magnetic core 2 is greater than or equal to the length of the line connecting the first end point 411 and the third end point 421 of the winding 4. The support bar has an inner side 331, an outer side 332, a top surface 333, and a bottom surface 334. The inner side 331 and the outer side 332 of the support bar are arranged opposite to each other, and the top surface 333 and the bottom surface 334 of the support bar are arranged opposite to each other and located between the inner side 331 and the outer side 332. The top surface 333 of the support bar is adjacent to the first end point 41 of the winding 4 relative to the bottom surface 334 to form the top surface of the support bar, and the bottom surface 334 of the support bar is adjacent to the second end point 42 of the winding 4 relative to the top surface 333 to form the bottom surface of the support bar. The inner side 331 of the support bar is disposed on the magnetic post 2, and the winding 4 is disposed on the outer side 332 of the support bar. In this embodiment, at least one first air gap 5 is formed in the support bar of the magnetic component 1e, and the at least one first air gap 5 penetrates the top and bottom surfaces of the support bar. For example, at least one first air gap 5 is formed by hollowing out the top surface of the support bar towards the bottom surface of the support bar, wherein the number of at least one first air gap 5 can be single or multiple. When the number of at least one first air gap 5 is single, the first air gap 5 penetrates between the top and bottom surfaces of the support bar, such that at least a portion of the first air gap 5 is located between the first projection line m and the second projection line n, and at least another portion of the first air gap 5 extends beyond the third projection line o above the third projection line o between the third projection line o and the fourth projection line p, and extends beyond the third projection line o and the fourth projection line p below the fourth projection line p. When there are multiple first air gaps 5, the multiple first air gaps 5 are arranged sequentially between the inner side 331 and the outer side 332 of the support bar, such that each first air gap 5 penetrates between the top surface and the bottom surface of the support bar, or at least one of the multiple first air gaps 5 penetrates between the top surface and the bottom surface of the support bar. In other words, each first air gap 5 penetrates between the top surface 333 and the bottom surface 334 of the support bar, or at least one of the multiple first air gaps 5 penetrates between the top surface 333 and the bottom surface 334 of the support bar. In this embodiment, at least a portion of each first air gap 5 is located between the first projection line m and the second projection line n, and at least another portion of each first air gap 5 extends above the third projection line o and beyond the third projection line o and the fourth projection line p, and extends below the fourth projection line p; or at least a portion of at least one of the plurality of first air gaps 5 is located between the first projection line m and the second projection line n, and at least another portion extends above the third projection line o and beyond the third projection line o and the fourth projection line p, and extends below the fourth projection line p.

[0102] Please see Figure 7This is a schematic diagram of the structure of the magnetic component in the seventh preferred embodiment of the present invention. Figure 7 As shown, the magnetic component 1f in this embodiment includes a magnetic core, at least one support bar assembly 3, a winding 4, and at least one first air gap 5, wherein the structure and function of the magnetic core's magnetic column 2 and the winding 4 are similar to those of [other components]. Figure 1 The magnetic core shown has a magnetic column 2 and a winding 4, so they are simply referred to by the same reference numerals and their similar structures and functions will not be described again here. In this embodiment, the support bar assembly 3 includes two first support bars 31 and a second support bar 32. The two first support bars 31 are disposed at intervals between the magnetic column 2 and the second support bar 32. The two first support bars 31, the magnetic column 2, and the second support bar 32 together define the first air gap 5. The two first support bars 31 are located at the two ends of the second support bar 32. The two first support bars 31 and the second support bar 32 can be integrally formed, or one of the two first support bars 31 and the second support bar 32 can be integrally formed, or the two first support bars 31 and the second support bar 32 can be three independent support bars. The second support bar 32 is located on the two first support bars 31 and between the two first support bars 31 and the winding 4, and the second support bar 32 is provided for the winding 4. In this embodiment, at least a portion of the first air gap 5 is located between the first projection line m and the second projection line n, and at least another portion of the first air gap 5 extends above the third projection line o and between the third projection line o and the fourth projection line p, and extends below the fourth projection line p and between the third projection line o and the fourth projection line p.

[0103] In some embodiments, the magnetic component may include not only a single support bar assembly and a single winding, but also two or more support bar assemblies and two or more windings. The following description uses an example of a magnetic component comprising two support bar assemblies and two windings. Please refer to... Figure 8 This is a schematic diagram of the structure of the magnetic component in the eighth preferred embodiment of the present invention. Figure 8 As shown, the magnetic component 1g in this embodiment includes a magnetic core, two support bar assemblies (hereinafter referred to as the first support bar assembly 7 and the second support bar assembly 3 for ease of explanation), two windings (hereinafter referred to as the first winding 8 and the second winding 4 for ease of explanation), and at least one first air gap 5. The magnetic core 2, the second support bar assembly 3 of the two support bar assemblies, the second winding 4 of the two windings, and the first air gap 5 are all similar in structure and function to [the following description is missing from the original text]. Figure 1The magnetic core shown includes the magnetic pillar 2, support bar assembly 3, winding 4, and first air gap 5. Since they are similar in structure and function, they will not be described again here. In this embodiment, the first support bar assembly 7 of the magnetic component 1g is composed of a single support bar or multiple support bars, and is disposed on the magnetic pillar 2 for mounting the first winding 8. The first winding 8 of the magnetic component 1g can be a low-voltage winding and is sleeved on the first support bar assembly 7. The second support bar assembly 3 is disposed on the first winding 8. The second winding 4 can be a high-voltage winding and is sleeved on the second support bar assembly 3. In other embodiments, the first winding 8 can be a high-voltage winding, and the second winding 4 can be a low-voltage winding.

[0104] In some embodiments, the number and position of the first air gaps 5 correspond one-to-one with the number and position of the second support assemblies 3. Each first air gap 5 is adjacent to a corresponding second support assembly 3, and at least a portion of each first air gap 5 is defined by the adjacent second support assembly 3, and the first air gap 5 is located between the second winding 4 and the first winding 8. Each first air gap 5 includes a first upper air gap 51 and a first lower air gap 52, the first upper air gap 51 being adjacent to the first end 41 of the second winding 4 relative to the first lower air gap 52, and the first lower air gap 52 being adjacent to the second end 42 of the second winding 4 relative to the first upper air gap 51.

[0105] In this embodiment, the second support bar assembly 3 of the magnetic component 1g includes a first support bar 31, a second support bar 32, and a third support bar 34. The third support bar 34 is disposed on the first winding 8 and located between the first winding 8 and the first support bar 31. The first support bar 31 is disposed on the third support bar 34 and located between the third support bar 34 and the second support bar 32. The second support bar 32 is disposed on the first support bar 31 and located between the first support bar 31 and the second winding 4, and the second support bar 32 is used for the second winding 4. In some embodiments, at least two of the first support bar 31, the second support bar 32, and the third support bar 34 are integrally formed. In other embodiments, the first support bar 31, the second support bar 32, and the third support bar 34 are three independent support bars.

[0106] Furthermore, the first support bar 31 has a top surface 31a and a bottom surface 31b disposed opposite to each other. The second support bar 32 has a top surface 32a and a bottom surface 32b disposed opposite to each other, and the top surface 32a of the second support bar 32 is more adjacent to the top surface 31a of the first support bar 31 relative to the bottom surface 32b, and the bottom surface 32b of the second support bar 32 is more adjacent to the bottom surface 31b of the first support bar 31 relative to the top surface 32a. The third support bar 34 has a top surface 34a and a bottom surface 34b disposed opposite to each other, and the top surface 34a of the third support bar 34 is more adjacent to the top surface 31a of the first support bar 31 and the top surface 32a of the second support bar 32 relative to the bottom surface 34b, and the bottom surface 34b of the third support bar 34 is more adjacent to the bottom surface 31b of the first support bar 31 and the bottom surface 32b of the second support bar 32 relative to the top surface 34a. The top surface 34a of the third support bar 34 and the top surface 32a of the second support bar 32 protrude from the top surface 31a of the first support bar 31, so that the top surface 31a of the third support bar 34, the top surface 31a of the first support bar 31, and the second support bar 32 together define the first upper air gap 51, wherein at least a portion of the first upper air gap 51 is located between the first projection line m and the top surface 31a of the first support bar 31 and between the first projection line m and the second projection line n, and at least another portion of the first upper air gap 51 extends beyond the third projection line o and between the third projection line o and the fourth projection line p. The bottom surface 34b of the third support bar 34 and the bottom surface 32b of the second support bar 32 protrude from the bottom surface 31b of the first support bar 31, so that the bottom surface 31b of the third support bar 34, the bottom surface 31b of the first support bar 31, and the second support bar 32 together define the first lower air gap 52, wherein at least a portion of the first lower air gap 52 is located between the second projection line n and the bottom surface 31b of the first support bar 31 and between the first projection line m and the second projection line n, and at least another portion of the first lower air gap 52 extends beyond the third projection line o and the fourth projection line p from below the fourth projection line p.

[0107] In some embodiments, the structure and function of the second support component 3 are similar to those of... Figure 2The support bar assembly 3 shown is simply referred to by the same reference numerals as having similar structure and function, and will not be described in detail here. In this embodiment, each first air gap 5 includes a first upper air gap 51 and a first lower air gap 52, and each second support bar assembly 3 includes a support bar. The first side of the support bar is disposed on the first winding 8, and the second winding 4 is disposed on the second side of the support bar opposite to the first side of the support bar. The first upper air gap 51 is defined by the first winding 8, the top surface of the support bar, and the second winding 4. At least a portion of the first upper air gap 51 is located between the first projection line m and the second projection line n, and at least another portion of the first upper air gap 51 extends from the third projection line o to the area between the third projection line o and the fourth projection line p. The first lower air gap 52 is defined by the first winding 8, a bottom surface of the support bar, and the second winding 4. At least a portion of the first lower air gap 52 is located between the first projection line m and the second projection line n, and at least another portion of the first lower air gap 52 extends from the fourth projection line p to the area between the third projection line o and the fourth projection line p. In this embodiment, the length of the support bar is greater than 80% of the length of the line connecting the first endpoint 411 and the third endpoint 421 of the second winding 4 and less than the distance between the projection point of the second endpoint 412 of the second winding 4 onto the magnetic post 2 and the projection point of the fourth endpoint 422 onto the magnetic post 2, and the length of the support bar is parallel to the axial direction Y of the magnetic post 2.

[0108] In some embodiments, the structure and function of the second support component 3 are similar to those of... Figure 3 , 4 The support assembly 3 shown in Figure 5 is used here, and since the same reference numerals are used to represent structures and functions similarly, it will not be described again. In this embodiment, each first air gap 5 includes at least one first upper air gap 51 and at least one first lower air gap 52, and each second support assembly 3 includes a support bar, and at least one first upper air gap 51 and at least one first lower air gap 52 are formed within the support bar, and at least one first upper air gap 51 and at least one first lower air gap 52 are respectively located in the top region and bottom region of the support bar, wherein at least a portion of at least one first upper air gap 51 is located between the first projection line m and the second projection line n, and at least another portion of at least one first upper air gap 51 extends from the third projection line o between the third projection line o and the fourth projection line p, and at least a portion of at least one first lower air gap 52 is located between the first projection line m and the second projection line n, and at least another portion of at least one first lower air gap 52 extends from the fourth projection line p between the third projection line o and the fourth projection line p.

[0109] In some embodiments, the structure and function of the second support component 3 are similar to those of... Figure 6The support bar assembly 3 shown is simply referred to by the same reference numerals as having similar structure and function, and will not be described in detail here. In this embodiment, each second support bar assembly 3 includes a support bar, wherein the length of the support bar is greater than or equal to the length of the line connecting the first end point 411 and the third end point 421 of the second winding 4, and the length of the support bar is parallel to the axial direction Y of the magnetic column 2; at least one first air gap 5 is formed in the support bar, and at least one first air gap 5 penetrates the top and bottom surfaces of the support bar.

[0110] In some embodiments, the structure and function of the second support component 3 are similar to those of... Figure 7 The support bar assembly 3 shown is simply referred to by the same reference numerals and has similar structure and function, so it will not be described in detail here. In this embodiment, each second support bar assembly 3 includes two first support bars 31 and one second support bar 32. The two first support bars 31 are disposed at intervals between the first winding 8 and the second support bar 32, and are respectively located at both ends of the second support bar 32. The second support bar 32 is disposed on the two first support bars 31 and is located between the two first support bars 31 and the second winding 4. The second support bar 32 is provided for the second winding 4. The first winding 8, the two first support bars 31 and the second support bar 32 together define at least one first air gap 5. At least a portion of the other part of the at least one first air gap 5 extends from the third projection line o between the third projection line o and the fourth projection line p, and extends from the fourth projection line p between the third projection line o and the fourth projection line p.

[0111] In this embodiment, the magnetic component 1g includes a first insulating layer 61, a second insulating layer 62, a third insulating layer 63, and a fourth insulating layer 64. The first insulating layer 61 is disposed around the inner periphery of the second winding 4 to isolate the electrical connection between the second support assembly 3 and the second winding 4. The second insulating layer 62 is disposed around the outer periphery of the second winding 4 to isolate the electrical connection between the second winding 4 and external components. The third insulating layer 63 is disposed around the inner periphery of the first winding 8 to isolate the electrical connection between the first support assembly 7 and the first winding 8. The fourth insulating layer 64 is disposed around the outer periphery of the first winding 8. The first insulating layer 61, the second insulating layer 62, the third insulating layer 63, and the fourth insulating layer 64 are NOMEX paper or composite insulating paper, etc.

[0112] Please see Figure 9 This is a schematic diagram of the structure of the magnetic component in the ninth preferred embodiment of the present invention. Figure 8 As shown, the magnetic component 1h in this embodiment includes a magnetic core, two support bar assemblies (hereinafter referred to as the first support bar assembly 7 and the second support bar assembly 3 for ease of explanation), two windings (hereinafter referred to as the first winding 8 and the second winding 4 for ease of explanation), and at least one first air gap 5. The structure and function of the magnetic core's magnetic pillar 2, the two support bar assemblies, the two windings, and the first air gap 5 are all similar to those of [other components]. Figure 8 The magnetic core shown includes the magnetic pillar 2, two support bar assemblies, two windings, and the first air gap 5. Therefore, they are simply represented by the same reference numerals and their structures and functions are similar, so further details will not be provided. Compared to... Figure 8 The magnetic component 1g shown in this embodiment has a first winding 8 with a third end 81, a fourth end 82, and a second connecting portion 83. The third end 81 and the fourth end 82 of the first winding 8 are connected to opposite sides of the second connecting portion 83. The third end 81 has a fifth endpoint 811 and a sixth endpoint 812. The fifth endpoint 811 is the endpoint of the third end 81 furthest from the second connecting portion 83, and the fifth endpoint 811 and the sixth endpoint 812 are connected to each other. The line connecting the fifth endpoint 811 and the sixth endpoint 812 is an inclined segment or a curved segment, so that the third end 81 forms a chamfer through the inclined segment or curved segment. The sixth endpoint 812 is connected to the second connecting portion 83, and a fifth projection line q is formed between the projection point of the sixth endpoint 812 onto the magnetic post 2 and the sixth endpoint 812. The fourth end 82 has a seventh endpoint 821 and an eighth endpoint 822. The seventh endpoint 821 is the endpoint of the fourth end 82 furthest from the second connecting part 83, and the seventh endpoint 821 and the eighth endpoint 822 are connected to each other. The line connecting the seventh endpoint 821 and the eighth endpoint 822 is an inclined segment or a curved segment, so that the fourth end 82 forms a chamfer through the inclined segment or curved segment. The eighth endpoint 822 is connected to the second connecting part 83, and the projection point of the eighth endpoint 822 onto the magnetic post 2 forms a sixth projection line r between the eighth endpoint 822 and the eighth endpoint 822. The length of the line connecting the fifth endpoint 811 of the third end 81 of the first winding 8 and the seventh endpoint 821 of the fourth end 82 is the longest distance of the first winding 8 in the axial direction Y parallel to the magnetic post 2. The projection point of the fifth endpoint 811 onto the magnetic post forms a seventh projection line s between the fifth endpoint 811 and the fifth endpoint 811, and the projection point of the seventh endpoint 821 onto the magnetic post 2 forms an eighth projection line t between the seventh endpoint 821 and the seventh endpoint 821.

[0113] In this embodiment, the magnetic component 1h further includes at least one second air gap 9. The number and position of the second air gaps 9 correspond one-to-one with the number and position of the first support bar components 7. Each second air gap 9 is defined by at least one adjacent first support bar component 7, and each second air gap 9 is located between the first winding 8 and the magnetic column 2. At least a portion of each second air gap 9 is located between the fifth projection line q and the sixth projection line r, and at least another portion of each second air gap 9 extends beyond the seventh projection line s and the eighth projection line t from at least one of the seventh projection line s and the eighth projection line t. In this embodiment, each second air gap 9 includes a second upper air gap 91 and a second lower air gap 92. The second upper air gap 91 is more adjacent to the third end 81 of the first winding 8 relative to the second lower air gap 92, and the second lower air gap 92 is more adjacent to the fourth end 82 of the first winding 8 relative to the second upper air gap 91.

[0114] And compared to Figure 8 The first support bar assembly of the magnetic component 1g shown can be composed of a single support bar or multiple support bars. In this embodiment, the first support bar assembly 7 of the magnetic component 1h includes a fourth support bar 71, a fifth support bar 72, and a sixth support bar 73. The fourth support bar 71 is disposed on the magnetic post 2 and located between the magnetic post 2 and the fifth support bar 72. The fifth support bar 72 is disposed on the fourth support bar 71 and located between the fourth support bar 71 and the sixth support bar 73. The sixth support bar 73 is disposed on the fifth support bar 72 and located between the first winding 8 and the fifth support bar 72, and the sixth support bar 73 is provided for the first winding 8. In addition, the fourth support bar 71 has a top surface 71a and a bottom surface 71b disposed opposite to each other. The fifth support bar 72 has a top surface 72a and a bottom surface 72b disposed opposite to each other, and the top surface 72a of the fifth support bar 72 is more adjacent to the top surface 71a of the fourth support bar 71 relative to the bottom surface 72b, and the bottom surface 72b of the fifth support bar 72 is more adjacent to the bottom surface 71b of the fourth support bar 71 relative to the top surface 72a. The sixth support bar 73 has a top surface 73a and a bottom surface 73b disposed opposite to each other, and the top surface 73a of the sixth support bar 73 is more adjacent to the top surface 71a of the fourth support bar 71 and the top surface 72a of the fifth support bar 72 relative to the bottom surface 73b, and the bottom surface 73b of the sixth support bar 73 is more adjacent to the bottom surface 71b of the fourth support bar 71 and the bottom surface 72b of the fifth support bar 72 relative to the top surface 73a.

[0115] The top surface 71a of the fourth support 71 and the top surface 73a of the sixth support 73 protrude from the top surface 72a of the fifth support 72, so that the top surfaces 72a of the fourth support 71, the fifth support 72 and the sixth support 73 together define the second upper air gap 91, wherein at least a portion of the second upper air gap 91 is located between the fifth projection line q and the top surface 72a of the fifth support 72 and between the fifth projection line q and the sixth projection line r, and at least another portion of the second upper air gap 91 extends beyond the seventh projection line s and between the seventh projection line s and the eighth projection line t. The bottom surface 71b of the fourth support bar 71 and the bottom surface 73b of the sixth support bar 73 protrude from the bottom surface 72b of the fifth support bar 72, so that the bottom surfaces 72b of the fourth support bar 71, the fifth support bar 72 and the sixth support bar 73 together define the second lower air gap 92, wherein at least a portion of the second lower air gap 92 is located between the sixth projection line r and the bottom surface 72b of the fifth support bar 72 and between the fifth projection line q and the sixth projection line r, and at least another portion of the second lower air gap 92 extends beyond the eighth projection line t from below the seventh projection line s and the eighth projection line t.

[0116] In summary, the magnetic component of the present invention has at least one first air gap, at least a portion of each first air gap being located between the first projection line and the second projection line, and at least another portion of each first air gap extending beyond the third projection line and the fourth projection line from at least one of the third projection line and the fourth projection line. This indicates that there is an air gap between the end of the winding and the magnetic post. Therefore, the dielectric constant between the first end and the second end of the winding and the magnetic post of the magnetic component of the present invention is low, which improves the electric field distribution at the first end and the second end, increases the partial discharge extinction voltage, and simultaneously reduces the size and cost of the magnetic component. Furthermore, no additional voltage equalization ring is required. Therefore, the assembly and manufacturing process of the magnetic component of the present invention are relatively simple.

Claims

1. A magnetic component comprising: A magnetic core, having a magnetic column; At least one support bar assembly is disposed on the magnetic post; A winding, sleeved on the at least one support assembly, has a first end, a second end, and a first connecting portion. The first end and the second end are connected to opposite sides of the first connecting portion. The first end has a first endpoint and a second endpoint, which are connected to each other. The second endpoint is connected to the first connecting portion, and the projection of the second endpoint onto the projection point of the magnetic post forms a first projection line. The second end has a third endpoint and a fourth endpoint, which are connected to each other. The fourth endpoint is connected to the first connecting portion, and the projection of the fourth endpoint onto the projection point of the magnetic post forms a second projection line. The length of a line connecting the first endpoint and the third endpoint is the longest distance of the winding parallel to an axial direction of the magnetic post. The projection of the first endpoint onto the projection point of the magnetic post forms a third projection line, and the projection of the third endpoint onto the projection point of the magnetic post forms a fourth projection line. At least one first air gap is defined by at least one support assembly and located between the winding and the magnetic post. At least a portion of the at least one first air gap is located between the first projection line and the second projection line, and at least another portion of the at least one first air gap extends beyond the third projection line and the fourth projection line. Each of the at least one first air gap includes a first upper air gap and a first lower air gap. The support assembly includes a support bar, a first side of which is disposed on the magnetic post, and the winding is disposed opposite to the first side of the support bar. On a second side of the support bar, the magnetic post and a top surface of the support bar together define the first upper air gap, wherein at least a portion of the first upper air gap is located between the first projection line and the second projection line, and at least another portion of the first upper air gap extends from the third projection line beyond the third projection line and between the fourth projection line. The magnetic post and a bottom surface of the support bar together define the first lower air gap, wherein at least a portion of the first lower air gap is located between the first projection line and the second projection line, and at least another portion of the first lower air gap extends from the fourth projection line beyond the third projection line and between the fourth projection line.

2. The magnetic component of claim 1, wherein the distance between the projection point of the first endpoint onto the magnetic post and the projection point of the second endpoint onto the magnetic post is less than a depth of the at least one first air gap, the distance between the projection point of the third endpoint onto the magnetic post and the projection point of the fourth endpoint onto the magnetic post is less than the depth of the at least one first air gap, and the depth of the at least one first air gap is parallel to the axial direction of the magnetic post.

3. The magnetic component of claim 1, wherein the length of the support bar is greater than 80% of the length of the line connecting the first end point and the third end point of the winding and less than the distance between the projection point of the second end point of the winding onto the magnetic post and the projection point of the fourth end point onto the magnetic post, and the length of the support bar is parallel to the axial direction of the magnetic post.

4. A magnetic component comprising: A magnetic core, having a magnetic column; At least one first support bar assembly is disposed on the magnetic post; A first winding is sleeved on the at least one first support bar assembly; At least one second support bar assembly is disposed on the first winding; A second winding, sleeved on the at least one second support assembly, has a first end, a second end, and a first connecting portion. The first end and the second end are connected to opposite sides of the first connecting portion. The first end has a first endpoint and a second endpoint, which are connected to each other. The second endpoint is connected to the first connecting portion, and its projection onto the projection point of the magnetic post forms a first projection line. The second end has a third endpoint and a fourth endpoint, which are connected to each other. The fourth endpoint is connected to the first connecting portion, and its projection onto the projection point of the magnetic post forms a second projection line. The length of the line connecting the first endpoint and the third endpoint is the longest distance of the winding parallel to an axial direction of the magnetic post. The projection of the first endpoint onto the projection point of the magnetic post forms a third projection line, and the projection of the third endpoint onto the projection point of the magnetic post forms a fourth projection line. At least one first air gap is defined by at least one second support assembly and located between the second winding and the first winding. At least a portion of the at least one first air gap lies between the first projection line and the second projection line, and at least another portion of the at least one first air gap extends beyond the third projection line and the fourth projection line. Each of the at least one first air gap includes a first upper air gap and a first lower air gap. Each second support assembly includes a support bar, a first side of which is disposed on the first winding, and the second winding is disposed opposite to the first side of the support bar. On a second side of the support bar, the first winding, a top surface of the support bar, and the second winding together define the first upper air gap, wherein at least a portion of the first upper air gap is located between the first projection line and the second projection line, and at least another portion of the first upper air gap extends from the third projection line beyond the third projection line between the third projection line and the fourth projection line. The first winding, a bottom surface of the support bar, and the second winding together define the first lower air gap, wherein at least a portion of the first lower air gap is located between the first projection line and the second projection line, and at least another portion of the first lower air gap extends from the fourth projection line beyond the third projection line between the third projection line and the fourth projection line.

5. The magnetic component as claimed in claim 4, wherein the first winding is a low-voltage winding and the second winding is a high-voltage winding.

6. The magnetic component as claimed in claim 4, wherein the first winding has a third end, a fourth end, and a second connecting portion, the third end and the fourth end being connected to opposite sides of the second connecting portion, wherein the third end has a fifth endpoint and a sixth endpoint, the fifth endpoint and the sixth endpoint being connected to each other, the sixth endpoint being connected to the second connecting portion, and the sixth endpoint being projected onto the projection point of the magnetic post and forming a fifth projection line between the sixth endpoint and the sixth endpoint; the fourth end has a seventh endpoint and an eighth endpoint, the seventh endpoint and the eighth endpoint being connected to each other, the eighth endpoint being connected to the second connecting portion, and the eighth endpoint being projected onto the projection point of the magnetic post and forming a sixth projection line between the eighth endpoint and the eighth endpoint; and the... The length of the line connecting the fifth endpoint and the seventh endpoint is the longest distance of the winding parallel to the axial direction of the magnetic column. The projection of the fifth endpoint onto the magnetic column between the projection point and the fifth endpoint forms a seventh projection line. The projection of the seventh endpoint onto the magnetic column between the projection point and the seventh endpoint forms an eighth projection line. The magnetic component also includes at least one second air gap, defined at least by the at least one first support component and located between the first winding and the magnetic column. At least a portion of the at least one second air gap is located between the fifth projection line and the sixth projection line. At least another portion of the at least one second air gap extends beyond the seventh projection line and the eighth projection line from at least one of the seventh projection line and the eighth projection line.

7. The magnetic component of claim 4, wherein the length of the support bar is greater than 80% of the length of the line connecting the first end and the third end of the winding and less than the distance between the projection point of the second end of the winding onto the magnetic post and the projection point of the fourth end of the winding onto the magnetic post, and the length of the support bar is parallel to the axial direction of the magnetic post.

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