Transformer structure

Abstract

The utility model discloses a transformer structure. The transformer structure contains a transformer and an inductance structure connected with the transformer. The transformer contains a first magnetic core group and a first winding. The first magnetic core group has a first magnetic core column. The first winding is wound on the first magnetic core column. The inductance structure contains a second magnetic core group and a second winding. The second magnetic core group has a second magnetic core column. The second winding is wound on the second magnetic core column. A winding of the first winding can extend to the second winding to integrate a choke coil in the transformer, thereby reducing the space of the circuit board, further saving the volume of the circuit board, and reducing the cost because no additional choke coil is needed.

Description

Technical Field

[0001] This utility model relates to a structure, and more particularly to a transformer structure. Background Technology

[0002] Existing LLC circuits typically require a main transformer and a choke, with the choke usually connected in series on the primary side of the transformer. Because the choke and transformer are relatively large compared to other electronic components, the circuit board design needs to consider ample space for them, increasing the board size and cost due to the additional choke.

[0003] In addition, another existing form of the transformer integrates the choke. In this form, the transformer increases leakage inductance (i.e., the choke) by separately winding the primary and secondary coils, replacing the external choke. However, this form results in a larger number of windings and thus greater copper losses. Utility Model Content

[0004] The present invention provides a transformer structure that can effectively improve the defects that may occur in existing transformers.

[0005] One embodiment of this utility model discloses a transformer structure, which includes: a transformer comprising: a first magnetic core assembly having a first magnetic core post; a first winding wound on the first magnetic core post; and an inductor structure connected to the transformer, the inductor structure comprising: a second magnetic core assembly having a second magnetic core post; and a second winding wound on the second magnetic core post; wherein a winding of the first winding can extend and be wound on the second winding.

[0006] Optionally, the first winding includes a first winding frame, and the second winding includes a second winding frame; wherein the winding can be wound around the first winding frame and the second winding frame.

[0007] Optionally, the winding includes a primary winding and a secondary winding. The primary winding has a first end and a second end located on opposite sides. The primary winding is wound around a first winding frame and a second winding frame. The primary winding extends from the first winding frame and wraps around the second winding frame, and extends from the second winding frame and wraps around the first winding frame. The first end and the second end of the primary winding are disposed on the first winding frame. The secondary winding is wound around the first winding frame.

[0008] Optionally, the winding includes a primary winding and a secondary winding. The primary winding has a first end and a second end located on opposite sides. The primary winding is wound around a first winding frame and a second winding frame. The primary winding extends from the first winding frame and wraps around the second winding frame, and extends from the second winding frame and wraps around the first winding frame. The first end and the second end of the primary winding are disposed on the second winding frame. The secondary winding is wound around the first winding frame.

[0009] Optionally, the primary winding of the second winding frame can be connected to a first circuit board to electrically couple the circuit of the first circuit board, and the secondary winding of the first winding frame can be connected to a second circuit board to electrically couple the circuit of the second circuit board; wherein the first circuit board is located on the primary side of the transformer, and the second circuit board is located on the secondary side of the transformer.

[0010] Optionally, the first magnetic core assembly includes a first upper magnetic cover and a first lower magnetic cover disposed on one side opposite to the first upper magnetic cover, and the first magnetic core post includes a first upper middle post and a first lower middle post disposed opposite to the first upper middle post; wherein the first upper middle post is disposed at the middle position of the first upper magnetic cover, the first lower middle post is disposed at the middle position of the first lower magnetic cover, and the first winding is wound around the first upper middle post and the first lower middle post; wherein, the second magnetic core assembly includes a second upper magnetic cover disposed on the other side opposite to the first upper magnetic cover, and the second magnetic core post includes a second upper middle post disposed at the middle position of the second upper magnetic cover; wherein, the second winding is wound around the second upper middle post.

[0011] Optionally, the winding includes a primary winding, which has at least one first winding segment, multiple extension segments, and at least one second winding segment. The at least one first winding segment is wound on a first winding, the at least one second winding segment is wound on a second winding, and the multiple extension segments are connected between the at least one first winding segment and the at least one second winding segment; wherein the length of the extension segment is greater than the thickness of the first upper magnetic cover.

[0012] Optionally, the first magnetic core assembly includes a first upper magnetic cover and a first lower magnetic cover, and the first magnetic core post includes a first upper middle post and a first lower middle post, the first upper middle post being located at the middle position of the first upper magnetic cover, the first lower middle post being located at the middle position of the first lower magnetic cover, and a first winding being wound around the first upper middle post and the first lower middle post; wherein, the second magnetic core assembly includes a second upper magnetic cover and a second lower magnetic cover opposite to the second upper magnetic cover, the second lower magnetic cover being opposite to the first upper magnetic cover, and the second magnetic core post includes a second upper middle post and a second lower middle post opposite to the second upper middle post, the second upper middle post being located at the middle position of the second upper magnetic cover, and the second lower middle post being located at the middle position of the second lower magnetic cover; wherein, a second winding is wound around the second upper middle post and the second lower middle post.

[0013] Optionally, the winding includes a primary winding, which has at least one first winding segment, multiple extension segments, and at least one second winding segment. The at least one first winding segment is wound on a first winding, the at least one second winding segment is wound on a second winding, and the multiple extension segments connect the at least one first winding segment and the at least one second winding segment. The length of the extension segment is greater than the thickness of the first upper magnetic cover plus the thickness of the second lower magnetic cover.

[0014] Optionally, the transformer is a vertical transformer; wherein, the first magnetic core group includes a first upper magnetic cover and a first lower magnetic cover disposed on one side opposite to the first upper magnetic cover, the first upper magnetic cover being arranged longitudinally next to the first lower magnetic cover, and the second magnetic core group includes a second upper magnetic cover and a second lower magnetic cover disposed opposite to the second upper magnetic cover, the second upper magnetic cover being arranged laterally next to the second lower magnetic cover; wherein, the first magnetic core group is arranged vertically next to the second magnetic core group.

[0015] Optionally, the transformer is a horizontal transformer; wherein, the first magnetic core group includes a first upper magnetic cover and a first lower magnetic cover disposed on one side opposite to the first upper magnetic cover, the first upper magnetic cover being arranged laterally next to the first lower magnetic cover, and the second magnetic core group includes a second upper magnetic cover and a second lower magnetic cover disposed opposite to the second upper magnetic cover, the second upper magnetic cover being arranged laterally next to the second lower magnetic cover; wherein, the first magnetic core group is arranged vertically next to the second magnetic core group.

[0016] In summary, the transformer structure disclosed in this utility model embodiment integrates a choke coil into the transformer through a design scheme in which "a winding of the first winding can be extended and wound on the second winding", thereby reducing the space of the circuit board, saving the volume of the circuit board, and reducing costs because no additional choke coil is required.

[0017] To further understand the features and technical content of this utility model, please refer to the following detailed description and drawings of this utility model. However, these descriptions and drawings are only used to illustrate this utility model and are not intended to limit the scope of protection of this utility model in any way. Attached Figure Description

[0018] Figure 1 This is a front view schematic diagram of the transformer structure according to Embodiment 1 of this utility model.

[0019] Figure 2 for Figure 1 A schematic diagram of its breakdown.

[0020] Figure 3 This is a flowchart illustrating the manufacturing method of the transformer structure according to Embodiment 1 of this utility model.

[0021] Figure 4 This is a schematic diagram of the transformer structure according to Embodiment 1 of this utility model.

[0022] Figure 5 for Figure 4 A schematic diagram of the subsequent production.

[0023] Figure 6 for Figure 5 A schematic diagram of the subsequent production.

[0024] Figure 7 for Figure 6 A schematic diagram of the subsequent production.

[0025] Figure 8 This is a front view schematic diagram of the transformer structure according to Embodiment 2 of this utility model.

[0026] Figure 9 for Figure 8 A schematic diagram of its breakdown.

[0027] Figure 10 This is a schematic diagram of the transformer structure according to Embodiment 2 of this utility model.

[0028] Figure 11 This is a side view schematic diagram of the transformer structure according to Embodiment 3 of this utility model.

[0029] Figure 12 for Figure 11 A schematic diagram of a transformer structure applied to a circuit board.

[0030] Figure 13 This is a schematic diagram of the transformer structure according to Embodiment 4 of this utility model.

[0031] Figure 14 for Figure 13 A schematic diagram of a transformer structure applied to a circuit board.

[0032] Figure 15 This is a side view of the transformer structure according to Embodiment 5 of this utility model.

[0033] Figure 16 This is a circuit diagram of the transformer structure in Embodiment Six of this utility model.

[0034] Figure 17 for Figure 16 A schematic diagram of the winding method for a transformer structure.

[0035] Figure 18 This is a circuit diagram of the transformer structure in Embodiment 7 of this utility model.

[0036] Figure 19 for Figure 18 A schematic diagram of the winding method for a transformer structure.

[0037] Figure 20 This is a schematic diagram of the transformer structure of Embodiment 8 of this utility model applied to a circuit board.

[0038] Figure 21 This is a schematic diagram of the transformer structure of Embodiment 9 of this utility model applied to a circuit board. Detailed Implementation

[0039] The following specific embodiments illustrate the implementation of the "transformer structure" disclosed in this utility model. Those skilled in the art can understand the advantages and effects of this utility model from the content disclosed in this specification. This utility model can be implemented or applied through other different specific embodiments, and various details in this specification can also be modified and changed based on different viewpoints and applications without departing from the concept of this utility model. Furthermore, the accompanying drawings of this utility model are for simple illustrative purposes only and are not depictions of actual dimensions, as stated in advance. The following embodiments will further describe the relevant technical content of this utility model in detail, but the disclosed content is not intended to limit the scope of protection of this utility model.

[0040] It should be understood that while terms such as "first," "second," and "third" may be used in this document to describe various components or signals, these components or signals should not be limited by these terms. These terms are primarily used to distinguish one component from another, or one signal from another. Furthermore, the term "or" as used herein should, as appropriate, include any combination of one or more of the associated listed items.

[0041] [Example 1]

[0042] Please see Figures 1 to 7 As shown, this is one embodiment of the present invention. This embodiment provides a transformer structure 100 that integrates a choke coil into the transformer, thereby reducing the space required for the circuit board, saving circuit board volume, and reducing costs because no additional choke coil is needed.

[0043] It should be noted that, for ease of understanding of this embodiment, the accompanying drawings show a partial structure of the transformer structure 100 to clearly illustrate the various structures and connections of the transformer structure 100. However, this utility model is not limited to the accompanying drawings. The following will describe the various structures of the transformer structure 100 and their connections.

[0044] like Figure 1 and Figure 2As shown, the transformer structure 100 includes a transformer 1 and an inductor structure 2 connected to the transformer 1. In this embodiment, the transformer 1 may have a structure with a single primary winding (not shown) and a single secondary winding (not shown), but this invention is not limited to this. For example, in other embodiments not shown in this invention, the transformer 1 may be a transformer 1 with multiple primary windings or a transformer 1 with multiple secondary windings. Furthermore, the number of primary and secondary windings of the transformer 1 can be adjusted and varied according to actual design requirements.

[0045] The transformer 1 includes a first magnetic core assembly 11 and a first winding 12 wound around the first magnetic core assembly 11. The first magnetic core assembly 11 has a first magnetic core post 11a. The first magnetic core assembly 11 includes a first upper magnetic cover 111 and a first lower magnetic cover 112 disposed opposite to one side of the first upper magnetic cover 111. The first magnetic core post 11a includes a first upper middle post 111a and a first lower middle post 112a disposed opposite to the first upper middle post. The first upper middle post 111a is located at the middle position of the first upper magnetic cover 111, and the first lower middle post 112a is located at the middle position of the first lower magnetic cover 112, but this invention is not limited to this. For example, in other embodiments not shown in this invention, the positions of the first upper middle post 111a and the first lower middle post 112a can be adjusted and changed according to actual design requirements.

[0046] The first winding 12 is wound around the first magnetic core post 11a. Specifically, the first winding 12 is wound around the first upper middle post 111a and the first lower middle post 112a. More specifically, the first winding 12 includes a first winding frame 121 and a winding wire 122. The first winding frame 121 has a first through hole TH1 for the first upper middle post 111a and the first lower middle post 112a to pass through. The winding wire 122 can be wound around the first winding frame 121.

[0047] The inductor structure 2 includes a second magnetic core assembly 21 and a second winding 22 wound around the second magnetic core assembly 21. The second magnetic core assembly 21 has a second magnetic core post 21a, and in this embodiment, the second magnetic core assembly 21 includes a second upper magnetic cover 211. The second upper magnetic cover 211 is disposed opposite to the first upper magnetic cover 111, and the second magnetic core post 21a includes a second upper middle post 211a. In this embodiment, the second upper middle post 211a is disposed at the middle position of the second upper magnetic cover 211, but the present invention is not limited thereto. For example, the position of the second upper middle post 211a can be adjusted and changed according to actual design requirements.

[0048] The second winding 22 is wound around the second upper center post 211a. The second winding 22 includes a second winding frame 221 and the winding 122. The second winding frame 221 has a second through hole TH2. The second through hole TH2 allows the second upper center post 211a to pass through. The winding 122 extends from the first winding 12 and is wound around the second winding 22. In other words, the winding of the first winding 12 can extend and be wound around the second winding 22.

[0049] In this embodiment, the winding 122 includes a primary side winding PW (such as...). Figure 17 (As shown). The primary winding PW has at least one first winding segment 1221, a plurality of extension segments 1222, and at least one second winding segment 1223. The at least one first winding segment 1221 is wound on the first winding 12, the at least one second winding segment 1223 is wound on the second winding 22, and the plurality of extension segments 1222 are connected between the at least one first winding segment 1221 and the at least one second winding segment 1223.

[0050] For example, when the primary winding PW starts winding from the first winding 12, the primary winding PW will have two first winding segments 1221 wound on the first winding 12, one second winding segment 1223 wound on the second winding 22, and two extension segments 1222 connecting the first winding segment 1221 and the second winding segment 1223; when the primary winding PW starts winding from the second winding 22, the primary winding PW will have one first winding segment 1221 wound on the first winding 12, two second winding segments 1223 wound on the second winding 22, and two extension segments 1222 connecting the first winding segment 1221 and the second winding segment 1223, but this utility model is not limited to this. The number of the first winding segment 1221, the extension segments 1222, and the second winding segments 1223 can be adjusted and varied according to actual design requirements.

[0051] It should be noted that the length of the extension segment 1222 in this embodiment is greater than the thickness of the first upper magnetic cover 111, so that the second winding frame 221 can be connected to the first winding frame 121 through the winding 122, and can be stacked on the first upper magnetic cover 111.

[0052] It should be noted that, in this embodiment, the transformer structure 100 is disposed opposite to the first upper magnetic cover 111 via the second upper magnetic cover 211, so that the inductor structure 2 is stacked on the transformer 1, thereby saving the height of the transformer structure 100. Furthermore, in this embodiment, the transformer structure 100 extends and winds the winding 122 of the first winding 12 onto the second winding 22, thereby integrating the choke (i.e., the inductor structure 2) into the transformer 1, thus reducing the space of the circuit board, thereby saving the volume of the circuit board, and reducing costs because no additional choke is required.

[0053] The above describes the components and their connections of the transformer structure 100 in this embodiment. Next, the manufacturing method of the transformer structure 100 in this embodiment, specifically method S100, is described. This method S100 is an application of the transformer structure 100 described above, but the present invention is not limited thereto. Figure 3 As shown, the method S100 for manufacturing the transformer structure includes a preparatory step S101, a winding step S103, a first magnetic core installation step S105, a second magnetic core installation step S107, and a fixing step S109. Any one of the above steps can be omitted or replaced with a reasonable variation according to the designer's needs.

[0054] The preceding step S101: Please refer to the following: Figure 3 and Figure 4 A first winding frame 121 and a second winding frame 221 are provided. The first winding frame 121 and the second winding frame 221 respectively have a first through hole TH1 and a second through hole TH2. The first through hole TH1 of the first winding frame 121 and the second through hole TH2 of the second winding frame 221 are sleeved on a winding shaft WS of a winding device WD.

[0055] It should be noted that in the preceding step S101, when the first winding frame 121 and the second winding frame 221 are sleeved on the winding shaft WS, a gap GAP is provided between the first winding frame 121 and the second winding frame 221. The thickness of the gap GAP is greater than that of the first upper magnetic cover 111 (e.g., Figure 1 The thickness (as shown) is such that after the winding step S103, the length of the extension 1222 of the winding 122 is greater than the thickness of the first upper magnetic cover 111, thereby facilitating the installation of the first magnetic core assembly 11 and the second magnetic core assembly 21. However, this invention is not limited to this. For example, in other embodiments not shown in this invention, the gap GAP can be adjusted or omitted according to actual design requirements.

[0056] The winding step S103: Please refer to the following: Figure 3 and Figure 5 The winding device WD drives the winding shaft WS to rotate, so that a winding 122 surrounds the first winding frame 121 and the second winding frame 221 to form a first winding 12 and a second winding 22. The winding 122 extends from the first winding frame 121 and surrounds the second winding frame 221, and also extends from the second winding frame 221 and surrounds the first winding frame 121.

[0057] First magnetic core installation step S105: Please refer to the following: Figure 3 and Figure 6 The first magnetic core assembly 11 is installed on the first winding frame 121 to form the transformer 1. The first magnetic core assembly 11 has a first magnetic core post 11a, which is disposed in the first through hole TH1 of the first winding frame 121.

[0058] In this embodiment, the first magnetic core assembly 11 includes a first upper magnetic cover 111 and a first lower magnetic cover 112 disposed opposite to one side of the first upper magnetic cover 111. The first magnetic core post 11a includes a first upper middle post 111a and a first lower middle post 112a disposed opposite to the first upper middle post 111a. The first upper magnetic cover 111 and the first lower magnetic cover 112 are mounted on both sides of the first winding frame 121, and the first upper middle post 111a and the first lower middle post 112a are disposed in the first through hole TH1 of the first winding frame 121.

[0059] Second magnetic core installation step S107: Please refer to the following: Figure 3 and Figure 7 The second magnetic core assembly 21 is mounted on the second winding frame 221 to form the inductor structure 2. The second magnetic core assembly 21 has a second magnetic core post 21a, which is disposed in the second through hole TH2 of the second winding frame 221.

[0060] In this embodiment, the second magnetic core assembly 21 includes a second upper magnetic cover 211. The second upper magnetic cover 211 is disposed opposite to the first upper magnetic cover 111 on the other side. The second magnetic core post 21a includes a second upper central post 211a. The second upper magnetic cover 211 is mounted on the second winding frame 221, and the second upper central post 211a is disposed in the second through hole TH2. Specifically, the second winding frame 221 is first placed on the other side of the first upper magnetic cover 111, and then the second upper magnetic cover 211 is mounted on the second winding frame 221, so that the second upper central post 211a is disposed in the second through hole TH2.

[0061] The fixed step S109: Please refer to the following: Figure 1 and Figure 3 The inductor structure 2 is fixed to the transformer 1. In this embodiment, the second upper magnetic cover 211 can be fixed to the other side of the first upper magnetic cover 111 by dispensing adhesive, so that the second winding frame 221 is also fixed to the other side of the first upper magnetic cover 111, thereby completing the stacking of the inductor structure 2 on the transformer 1. However, this utility model is not limited to this. For example, in other embodiments not shown in this utility model, the second upper magnetic cover 211 can be fixed to the first upper magnetic cover 111 and the first lower magnetic cover 112 by tape, thereby completing the stacking of the inductor structure 2 on the transformer 1.

[0062] [Example 2]

[0063] Please see Figures 8 to 10 As shown, this is Embodiment Two of the present invention. Since this embodiment is similar to Embodiment One described above, the similarities between the two embodiments will not be repeated. The main differences between this embodiment and Embodiment One are explained below:

[0064] In this embodiment, the second magnetic core assembly 21 includes a second upper magnetic cover 211 and a second lower magnetic cover 212 opposite to the second upper magnetic cover 211. The second lower magnetic cover 212 is opposite to the first upper magnetic cover 111 on the other side, and the second magnetic core post 21a includes a second upper middle post 211a and a second lower middle post 212a opposite to the second upper middle post 211a. The second upper middle post 211a is located at the middle position of the second upper magnetic cover 211, and the second lower middle post 212a is located at the middle position of the second lower magnetic cover 212, but the present invention is not limited thereto. The second winding 22 is wound around the second upper middle post 211a and the second lower middle post 212a.

[0065] It should be noted that, since the first winding frame 121 of the transformer 1 and the second winding frame 221 of the inductor structure 2 are spaced apart by the first upper magnetic cover 111 and the second lower magnetic cover 212, the length of the extension section 1222 of the winding 122 is greater than the thickness of the first upper magnetic cover 111 plus the thickness of the second lower magnetic cover 212, so that the second winding frame 221 can be connected to the first winding frame 121 through the winding 122, and the inductor structure 2 can be stacked on the transformer 1.

[0066] like Figure 8 and Figure 10As shown, the difference between the transformer structure manufacturing method S100 of this embodiment and the first embodiment described above is that, in this embodiment, a second magnetic core installation step S107 is included: the second magnetic core assembly 21 includes a second upper magnetic cover 211 and a second lower magnetic cover 212 opposite to the second upper magnetic cover 211, the second lower magnetic cover 212 being opposite to the first upper magnetic cover 111, and the second magnetic core post 21a includes a second upper middle post 211a and a second lower middle post 212a opposite to the second upper middle post 211a. The second upper magnetic cover 211 and the second lower magnetic cover 212 are respectively installed on both sides of the second winding frame 221, and the second upper middle post 211a and the second lower middle post 212a are disposed in the second through hole TH2.

[0067] [Example 3]

[0068] Please see Figure 11 and Figure 12 As shown, this is Embodiment Three of the present invention. Since this embodiment is similar to Embodiments One and Two described above, the similarities between this embodiment and the two embodiments will not be repeated. The main differences between this embodiment and the two embodiments are explained below:

[0069] In this embodiment, the transformer 1 is a vertical transformer. The inductor structure 2 is arranged perpendicularly to the transformer 1 to form a P-shape. Specifically, the first magnetic core group 11 of the transformer 1 is arranged perpendicularly to the second magnetic core group 21 of the inductor structure 2. The first upper magnetic cover 111 is arranged longitudinally to the first lower magnetic cover 112, and the second upper magnetic cover 211 is arranged laterally to the second lower magnetic cover 212.

[0070] like Figure 12 As shown, when the inductor structure 2 is arranged perpendicularly to the transformer 1 to form a P-shape, and the transformer structure 100 is electrically coupled to a circuit board PCB, multiple electronic components EC can be designed and laid out below the inductor structure 2 to increase power density applications.

[0071] [Example 4]

[0072] Please see Figure 13 and Figure 14 As shown, this is Embodiment 4 of the present invention. Since this embodiment is similar to Embodiment 3 described above, the similarities between this embodiment and Embodiment 3 will not be repeated. The main differences between this embodiment and Embodiment 3 are explained below:

[0073] In this embodiment, the transformer 1 is a horizontal transformer. The inductor structure 2 is arranged perpendicularly to the transformer 1 to form an inverted P-shape. Specifically, the first magnetic core group 11 of the transformer 1 is arranged perpendicularly to the second magnetic core group 21 of the inductor structure 2. The first upper magnetic cover 111 is arranged laterally to the first lower magnetic cover 112, and the second upper magnetic cover 211 is arranged laterally to the second lower magnetic cover 212.

[0074] like Figure 14 As shown, when the inductor structure 2 and the transformer 1 are arranged perpendicularly to form an inverted P-shape, the transformer structure 100 can be electrically connected to a first circuit board PB1 and a second circuit board PB2. In other words, the inductor structure 2 is electrically coupled to the first circuit board PB1, and the transformer 1 is electrically coupled to the second circuit board PB2. However, this invention is not limited to this. For example, in other embodiments not shown in this invention, the inductor structure 2 and the transformer 1 can also be electrically coupled to the second circuit board PB2 and the first circuit board PB1, respectively.

[0075] At this time, multiple electronic components EC can be electrically coupled to the first circuit board PB1, and the multiple electronic components EC can be designed to be arranged next to the inductor structure 2 and opposite the transformer 1 to increase power density application.

[0076] [Example 5]

[0077] Please see Figure 15 As shown, this is Embodiment Five of the present invention. Since this embodiment is similar to the embodiments described above, the similarities between this embodiment and the embodiments described above will not be repeated. The main differences between this embodiment and the embodiments described above are explained as follows:

[0078] In this embodiment, the transformer 1 and the inductor structure 2 can be a separate transformer structure 100 connected only by the winding 122. For example... Figure 15 As shown, this embodiment can make the transformer 1 and the inductor structure 2 electrically coupled to the circuit board PCB by designing the length of the extension section 1222 of the winding 122, so as to meet the needs of different circuit designs.

[0079] [Example 6]

[0080] Please see Figure 16 and Figure 17 As shown, this is Embodiment Six of the present invention. Since this embodiment is similar to the embodiments described above, the similarities between this embodiment and the embodiments described above will not be repeated. The main differences between this embodiment and the embodiments described above are explained as follows:

[0081] The winding 122 includes the primary winding PW and the secondary winding SW. The primary winding PW has a first end PWT1 and a second end PWT2 located on opposite sides, and the primary winding PW is wound around the first winding frame 121 of the transformer 1 and the second winding frame 221 of the inductor structure 2 (e.g., Figure 5 (As shown). The primary winding PW extends from the first winding frame 121 and wraps around the second winding frame 221, and extends from the second winding frame 221 and wraps around the first winding frame 121. The first end PWT1 and the second end PWT2 of the primary winding PW are disposed on the first winding frame 121. The secondary winding SW wraps around the first winding frame 121.

[0082] In this embodiment, the first winding 12 of the transformer 1 includes a first primary winding NP1, an inductor structure 2 connected in series with the first primary winding NP1, a second primary winding NP2 connected in series with the inductor structure 2, a first secondary winding NS1, and a second secondary winding NS2 connected in series with the first secondary winding NS1.

[0083] In this embodiment, the winding 122 is wound using a push-over winding method to wind the first winding frame 121 of the transformer 1 and the second winding frame 221 of the inductor structure 2. Specifically, the first end PWT1 of the primary winding PW is placed on the transformer 1. Then, the primary winding PW begins to wind the first primary winding NP1 on the first winding frame 121. After the primary winding PW extends to the second winding frame 221 to wind the inductor Lr, the primary winding PW extends back to the first winding frame 121 to wind the second primary winding NP2, and the second end PWT2 of the primary winding PW is placed on the first winding frame 121 to complete the primary winding. However, this invention is not limited to this. For example, in other embodiments not shown in this invention, the primary winding PW may also sequentially wind the second primary winding NP2, the inductor Lr, and the first primary winding NP1.

[0084] Furthermore, the secondary winding SW has a first end SWT1 and a second end SWT2 located on opposite sides. First, the first end SWT1 of the secondary winding SW is placed on the first winding frame 121. Then, the first secondary winding NS1 and the second secondary winding NS2 are sequentially wound on the first winding frame 121 of the transformer 1. Afterward, the second end SWT2 of the secondary winding SW is also placed on the secondary winding SW of the first winding frame 121 to complete the winding of the secondary coil.

[0085] It should be noted that the first end PWT1 and the second end PWT2 of the primary winding PW and the first end SWT1 and the second end SWT2 of the secondary winding SW are all disposed on the first winding frame 121 of the transformer 1, so as to integrate the endpoints of the primary winding PW and the endpoints of the secondary winding SW on the same side, which is beneficial to the circuit design layout.

[0086] [Example 7]

[0087] Please see Figure 18 and Figure 19 As shown, this is Embodiment Seven of the present invention. Since this embodiment is similar to the embodiments described above, the similarities between this embodiment and the embodiments described above will not be repeated. The main differences between this embodiment and the embodiments described above are explained as follows:

[0088] The primary winding PW originates from the first winding frame 121 (e.g.) Figure 5 As shown) extends around the second winding frame 221 (as shown) Figure 5 As shown), the primary winding PW extends from the second winding frame 221 and surrounds the first winding frame 121, with the first end PWT1 and the second end PWT2 of the primary winding PW disposed on the second winding frame 221. The secondary winding SW surrounds the first winding frame 121.

[0089] In this embodiment, the first winding 12 of the transformer 1 includes a first inductor Lr1, a first primary winding NP1 connected in series with the first inductor Lr1, a second primary winding NP2 connected in series with the first primary winding NP1, a second inductor Lr2 connected in series with the second primary winding NP2, a first secondary winding NS1, and a second secondary winding NS2 connected in series with the first secondary winding NS1.

[0090] In this embodiment, the winding 122 is wound using a push-over winding method to wind the first winding frame 121 of the transformer 1 and the second winding frame 221 of the inductor structure 2. Specifically, the first end PWT1 of the primary winding PW is placed on the second winding frame 221 of the inductor structure 2. Then, the primary winding PW begins to wind the first inductor Lr1 on the second winding frame 221. After the primary winding PW extends to the first winding frame 121 and winds the first primary winding NP1, the first end SWT1 of the secondary winding SW is placed on the first winding frame 121. After the secondary winding SW winds the first secondary winding NS1 and the second secondary winding NS2 in sequence, the second end SWT2 of the secondary winding SW is also placed on the first winding frame 121.

[0091] Afterwards, the primary winding PW is wound around the second secondary winding NS2 on the first winding frame 121, and then the primary winding PW is extended back onto the second winding frame 221 to wind the second inductor Lr2, so as to complete the winding of the primary and secondary coils, but the present invention is not limited thereto.

[0092] It should be noted that the winding method of the winding 122 in this embodiment is a split sandwich winding method, so that the first end PWT1 and the second end PWT2 of the primary winding PW are disposed on the primary side of the transformer 1, while the first end SWT1 and the second end SWT2 of the secondary winding SW are disposed on the secondary side of the transformer 1. In other words, the first end PWT1 and the second end PWT2 of the primary winding PW are disposed on the second winding frame 221 of the inductor structure 2, while the first end SWT1 and the second end SWT2 of the secondary winding SW are disposed on the first winding frame 121, so that one side of the transformer structure 100 can be electrically coupled to the primary side circuit, and the other side of the transformer structure 100 can be electrically coupled to the secondary side circuit, thereby facilitating circuit design and layout.

[0093] [Example 8]

[0094] Please see Figure 20 As shown, this is Embodiment Eight of the present invention. Since this embodiment is similar to the embodiments described above, the similarities between this embodiment and the embodiments described above will not be repeated. The main differences between this embodiment and the embodiments described above are explained as follows:

[0095] In this embodiment, the inductor structure 2 and the transformer 1 are separate transformer structures 100. The primary winding PW (e.g., on the second winding frame 221 of the inductor structure 2) is... Figure 5 and Figure 19 (As shown) Connects to a circuit board PCB to electrically couple the electronic component EC on the primary side circuit NPC of the transformer 1, and is positioned in the left-side region of the circuit board PCB (e.g.: Figure 19 (The winding method shown). Furthermore, the secondary-side winding SW on the first winding frame 121 of the transformer 1 is connected to the circuit board PCB to electrically couple to the electronic component EC on the secondary-side circuit NSC of the transformer 1, and is located in the right-side area of ​​the circuit board PCB (e.g.: Figure 19 (The winding method shown). Therefore, the transformer structure 100 of this embodiment can configure the primary side circuit NPC and the secondary side circuit NSC on both sides of the circuit board PCB through the design of the inductor structure 2 and the transformer 1, thereby increasing the convenience of circuit design.

[0096] [Example 9]

[0097] Please see Figure 21 As shown, this is Embodiment Nine of the present invention. Since this embodiment is similar to the embodiments described above, the similarities between this embodiment and the embodiments described above will not be repeated. The main differences between this embodiment and the embodiments described above are explained as follows:

[0098] The primary winding PW (e.g., on the second winding frame 221 of the inductor structure 2) on the second winding frame 221 Figure 5 and Figure 19 The transformer 1 (as shown) can be connected to a first circuit board PB1 to electrically couple the circuit on the first circuit board PB1. The secondary winding SW on the first winding frame 121 of the transformer 1 can be connected to a second circuit board PB2 to electrically couple the circuit on the second circuit board PB2 (e.g., ...). Figure 19 (The winding method is shown). The first circuit board PB1 is located on the primary side of the transformer 1, and the second circuit board PB2 is located on the secondary side of the transformer 1. In other words, the circuit composed of electronic components EC on the first circuit board PB1 is the primary side circuit NPC of the transformer 1, and the circuit composed of electronic components EC on the second circuit board PB2 is the secondary side circuit NSC of the transformer 1. Therefore, the transformer structure 100 of this embodiment can configure the primary side circuit NPC and the secondary side circuit NSC on the first circuit board PB1 and the second circuit board PB2 through the design of the inductor structure 2 and the transformer 1, thereby increasing the convenience of circuit design.

[0099] [Technical Effects of the Embodiments of this Utility Model]

[0100] In summary, the transformer structure disclosed in this utility model embodiment integrates a choke coil into the transformer through a design scheme in which "a winding of the first winding can be extended and wound on the second winding", thereby reducing the space of the circuit board, saving the volume of the circuit board, and reducing costs because no additional choke coil is required.

[0101] The above-disclosed content is only a preferred and feasible embodiment of the present utility model, and is not intended to limit the patent scope of the present utility model. Therefore, all equivalent technical changes made based on the contents of the present utility model specification and drawings are included in the patent scope of the present utility model.

Claims

1. A transformer structure, characterized in that, include: A transformer, comprising: A first magnetic core assembly, having a first magnetic core post; and A first winding is wound around the first magnetic core post; and An inductor structure is connected to the transformer, the inductor structure comprising: A second magnetic core assembly, having a second magnetic core post; and A second winding is wound around the second magnetic core post; In this configuration, one winding of the first winding can be extended and wound around the second winding.

2. The transformer structure according to claim 1, characterized in that, The first winding includes a first winding frame, and the second winding includes a second winding frame; wherein the winding can be wound around the first winding frame and the second winding frame.

3. The transformer structure according to claim 2, characterized in that, The winding includes a primary winding and a secondary winding. The primary winding has a first end and a second end located on opposite sides. The primary winding is wound around a first winding frame and a second winding frame. The primary winding extends from the first winding frame and wraps around the second winding frame, and extends from the second winding frame and wraps around the first winding frame. The first end and the second end of the primary winding are disposed on the first winding frame. The secondary winding is wound around the first winding frame.

4. The transformer structure according to claim 2, characterized in that, The winding includes a primary winding and a secondary winding. The primary winding has a first end and a second end located on opposite sides. The primary winding is wound around a first winding frame and a second winding frame. The primary winding extends from the first winding frame and wraps around the second winding frame, and extends from the second winding frame and wraps around the first winding frame. The first end and the second end of the primary winding are disposed on the second winding frame. The secondary winding is wound around the first winding frame.

5. The transformer structure according to claim 4, characterized in that, The primary winding of the second winding frame can be connected to a first circuit board to electrically couple the circuit of the first circuit board, and the secondary winding of the first winding frame can be connected to a second circuit board to electrically couple the circuit of the second circuit board; wherein, the first circuit board is located on the primary side of the transformer, and the second circuit board is located on the secondary side of the transformer.

6. The transformer structure according to claim 1, characterized in that, The first magnetic core assembly includes a first upper magnetic cover and a first lower magnetic cover disposed on one side opposite to the first upper magnetic cover, and the first magnetic core post includes a first upper central post and a first lower central post disposed opposite to the first upper central post; wherein, the first upper central post is disposed at the middle position of the first upper magnetic cover, the first lower central post is disposed at the middle position of the first lower magnetic cover, and the first winding is wound around the first upper central post and the first lower central post; wherein, the second magnetic core assembly includes a second upper magnetic cover disposed on the other side opposite to the first upper magnetic cover, and the second magnetic core post includes a second upper central post disposed at the middle position of the second upper magnetic cover; wherein, the second winding is wound around the second upper central post.

7. The transformer structure according to claim 6, characterized in that, The winding includes a primary winding, which has at least one first winding segment, multiple extension segments, and at least one second winding segment. The at least one first winding segment is wound around the first winding, the at least one second winding segment is wound around the second winding, and the multiple extension segments are connected between the at least one first winding segment and the at least one second winding segment; wherein the length of the extension segment is greater than the thickness of the first upper magnetic cover.

8. The transformer structure according to claim 1, characterized in that, The first magnetic core assembly includes a first upper magnetic cover and a first lower magnetic cover, and the first magnetic core post includes a first upper middle post and a first lower middle post. The first upper middle post is located at the middle position of the first upper magnetic cover, and the first lower middle post is located at the middle position of the first lower magnetic cover. The first winding is wound around the first upper middle post and the first lower middle post. The second magnetic core assembly includes a second upper magnetic cover and a second lower magnetic cover opposite to the second upper magnetic cover. The second lower magnetic cover is opposite to the first upper magnetic cover on the other side. The second magnetic core post includes a second upper middle post and a second lower middle post opposite to the second upper middle post. The second upper middle post is located at the middle position of the second upper magnetic cover, and the second lower middle post is located at the middle position of the second lower magnetic cover. The second winding is wound around the second upper middle post and the second lower middle post.

9. The transformer structure according to claim 8, characterized in that, The winding includes a primary winding, which has at least one first winding segment, multiple extension segments, and at least one second winding segment. The at least one first winding segment is wound around the first winding, the at least one second winding segment is wound around the second winding, and the multiple extension segments are connected between the at least one first winding segment and the at least one second winding segment. The length of each extension segment is greater than the thickness of the first upper magnetic cover plus the thickness of the second lower magnetic cover.

10. The transformer structure according to claim 1, characterized in that, The transformer is a vertical transformer; wherein, the first magnetic core assembly includes a first upper magnetic cover and a first lower magnetic cover disposed on one side opposite to the first upper magnetic cover, the first upper magnetic cover being arranged longitudinally next to the first lower magnetic cover, and the second magnetic core assembly includes a second upper magnetic cover and a second lower magnetic cover disposed opposite to the second upper magnetic cover, the second upper magnetic cover being arranged laterally next to the second lower magnetic cover; wherein, the first magnetic core assembly is arranged vertically next to the second magnetic core assembly.

11. The transformer structure according to claim 1, characterized in that, The transformer is a horizontal transformer; wherein, the first magnetic core assembly includes a first upper magnetic cover and a first lower magnetic cover disposed on one side opposite to the first upper magnetic cover, the first upper magnetic cover being arranged laterally next to the first lower magnetic cover, and the second magnetic core assembly includes a second upper magnetic cover and a second lower magnetic cover disposed opposite to the second upper magnetic cover, the second upper magnetic cover being arranged laterally next to the second lower magnetic cover; wherein, the first magnetic core assembly is arranged vertically next to the second magnetic core assembly.

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