CN213150543U - Power supply device and transformer combined structure - Google Patents

Abstract

The utility model discloses a transformer composite structure, which comprises a transformer and a first conductive base, wherein the transformer is provided with a primary winding and a secondary winding; the first conductive base comprises a first fixing plate and at least one first conductive sheet connected with the first fixing plate, the first fixing plate is connected to one side of the transformer, at least one first clamping hole is formed in the first conductive sheet and used for being electrically connected with the secondary winding, and the first conductive sheet is connected with the main circuit board in an inserting mode to achieve electrical connection, so that a soldering tin process can be effectively simplified, and automatic assembly can be achieved. The utility model discloses still disclose a power supply device who has this transformer integrated configuration.

Description

Power supply device and transformer combined structure

Technical Field

The utility model relates to a power supply technical field especially relates to a power supply device and transformer integrated configuration.

Background

As shown in fig. 1, the power supply device generally includes a primary circuit 11 ', a secondary circuit 12 ', and a transformer 13 ', wherein the components of the primary circuit 11 ', the secondary circuit 12 ', and the transformer 13 ' are disposed on a main circuit board, and the components are electrically connected through a copper foil printed circuit on the main circuit board, generally, the connection between the transformer 13 ' and the primary circuit 11 ' is to connect the primary winding coil of the transformer 13 ' to the primary circuit 11 ' in a flying wire manner, and the electrical connection between the transformer 13 ' and the secondary circuit 12 ' is to directly solder the secondary winding coil of the transformer 13 ' to the main circuit board, so that the soldering process is complicated, and automatic assembly and automatic winding cannot be achieved.

Therefore, it is necessary to provide a power supply device and a transformer assembly structure that can effectively simplify the soldering process and achieve automatic winding, so as to solve the above-mentioned problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an effectively simplify soldering tin processing procedure to can realize automatic wire-wound transformer integrated configuration.

Another object of the present invention is to provide a power supply device that can simplify the soldering process and realize automatic winding.

In order to achieve the above purpose, the technical scheme of the utility model is that: a transformer combination structure is provided, which comprises a transformer and a first conductive base; wherein the transformer has a primary winding and a secondary winding; the first conductive base comprises a first fixing plate and at least one first conductive plate connected with the first fixing plate, the first fixing plate is connected to one side of the transformer, each first conductive plate is provided with at least one first clamping hole, and the first clamping holes are used for being electrically connected with the secondary winding.

Preferably, the transformer assembly structure further includes a second conductive base disposed on the other side of the transformer with respect to the first conductive base and having at least one second conductive plate, each second conductive plate has at least one second engaging hole formed therein, the second engaging hole is used for connecting with the transformer, and the second conductive plate is electrically connected with the primary winding.

Preferably, the first fixing plate is provided with a third engaging hole corresponding to the first engaging hole, and the secondary winding is inserted into the first engaging hole and the third engaging hole.

Preferably, a first protruding portion and a first recessed portion are disposed between the first fixing plate and the first conductive plate and are correspondingly and mutually clamped.

Preferably, the first fixing plate is further provided with a mounting groove corresponding to the shape of the first conductive sheet, and the first conductive sheet is embedded into the mounting groove.

Preferably, the secondary winding is a conductive sheet, and the conductive sheet is inserted into the first engaging hole and the third engaging hole.

Preferably, the second conductive base further includes a second fixing plate, the second fixing plate is provided with a fourth engaging hole corresponding to the second engaging hole, and the transformer is connected to the second engaging hole and the fourth engaging hole.

Preferably, the second conductive base further comprises at least one third conductive plate, and the third conductive plate is connected to the second fixing plate and electrically connected to the primary winding.

Preferably, a second protruding portion and a second recessed portion corresponding to each other and adapted to be clamped with each other are disposed between the second fixing plate and the third conductive plate.

Preferably, the primary winding is a coil which is wound and welded to the second conductive sheet and the third conductive sheet.

Preferably, a fifth engaging hole is further formed in the first fixing plate, and the fifth engaging hole is used for being engaged with the transformer.

Preferably, two opposite sides of the transformer are respectively provided with a first convex column and a second convex column, the first fixing plate is connected to the first convex column, and the second conductive base is connected to the second convex column.

Preferably, the transformer further comprises a magnetic core assembly and at least one winding base arranged in the magnetic core assembly, the primary winding is arranged on the winding base, and the secondary winding is provided with at least two windings which are respectively arranged on two sides of the winding base.

Preferably, each winding base includes a winding base, and an upper cover and a base connected to two opposite sides of the winding base, the winding base is used for winding the primary winding, and the base or/and the upper cover is used for connecting the first fixing plate.

Preferably, a bump and a engaging portion are disposed between the winding seat and the upper cover and between the winding seat and the seat body.

Preferably, the magnetic core assembly includes a first magnetic core body and a second magnetic core body which are oppositely disposed, and the first magnetic core body and the second magnetic core body are respectively disposed through the winding base and the secondary winding.

Correspondingly, the utility model also provides a power supply unit, its including locate main circuit board once side circuit, secondary side circuit and as above transformer integrated configuration, wherein, first conducting strip peg graft in main circuit board and with the secondary side circuit electricity is connected.

Preferably, in the power supply apparatus, the transformer assembly further includes a second conductive base, which is disposed on the other side of the transformer with respect to the first conductive base and has at least one second conductive sheet, and the second conductive sheet is inserted into the main circuit board and is electrically connected to the primary side circuit and the primary winding, respectively.

Compared with the prior art, because the utility model discloses a transformer integrated configuration sets up first electrically conductive base in one side of transformer, this first electrically conductive base includes first fixed plate and at least one first conducting strip that is connected with it, at least one first block hole has been seted up on the first conducting strip, first block hole is used for being connected with secondary winding electricity to come to peg graft mutually and realize the electricity through this first conducting strip with the main circuit board and be connected, effectively simplify the soldering tin processing procedure that transformer integrated configuration and main circuit board are connected from this, and can realize automatic equipment. Correspondingly, the power supply device with the transformer assembly structure of the present invention also has the same technical effects.

Drawings

Fig. 1 is a schematic diagram of a conventional power supply apparatus.

Fig. 2 is a schematic structural diagram of a first embodiment of the transformer assembly structure of the present invention.

Fig. 3 is an exploded view of fig. 2.

Fig. 4 is another exploded view of fig. 2.

Fig. 5 is a schematic structural diagram of a second embodiment of the transformer assembly structure of the present invention.

Fig. 6 is a schematic view of the structure of fig. 5 from another angle.

Fig. 7 is an exploded view of fig. 5.

Fig. 8 is a schematic view of the structure of fig. 7 from another angle.

Fig. 9 is another exploded view of fig. 5.

Fig. 10 is an exploded view of a bobbin base of the transformer of fig. 7.

Fig. 11 is a schematic view of the structure of fig. 10 from another angle.

Fig. 12 is a schematic structural diagram of a third embodiment of the transformer assembly structure of the present invention.

Fig. 13 is a schematic view of the structure of fig. 12 from another angle.

Fig. 14 is an exploded view of fig. 12.

Detailed Description

Embodiments of the present invention will now be described with reference to the drawings, wherein like element numerals represent like elements throughout.

Referring to fig. 2 to 14, the transformer assembly 1 of the present invention includes a transformer 10 and a first conductive base 20. The transformer 10 includes a magnetic core assembly 11, a winding base 12 disposed in the magnetic core assembly 11, a primary winding (not shown), and a secondary winding 13, wherein the primary winding is disposed on the winding base 12; the first conductive base 20 is disposed at one side of the transformer 10 and has at least one first conductive plate 21, the first conductive plate 21 is electrically connected to the secondary winding 13, and the first conductive plate 21 is inserted into the main circuit board, so that a soldering process between the transformer assembly 1 and the main circuit board can be simplified, and automatic assembly can be achieved.

More preferably, the transformer assembly 1 may further include a second conductive base 30, the second conductive base 30 is disposed on the other side of the transformer 10 relative to the first conductive base 20, and the second conductive base 30 has at least one second conductive sheet 31, the second conductive sheet 31 is electrically connected to the primary winding, and the second conductive sheet 31 is used for being plugged into the main circuit board, so that the soldering process is further simplified.

In the present invention, the primary winding is a coil, the coil is welded to the main circuit board or the second conductive sheet 31, the secondary winding 13 is a conductive sheet, and the conductive sheet is directly inserted into the first conductive sheet 21. Of course, the primary winding and the secondary winding 13 are not limited thereto.

Referring to fig. 2-14, different embodiments of the transformer assembly 1 of the present invention will be described.

Referring first to fig. 2-4, in a first embodiment of the transformer assembly 1 of the present invention, only the first conductive base 20 is provided.

Specifically, the first conductive base 20 includes three first conductive sheets 21 and a first fixing plate 22, and each first conductive sheet 21 is connected to one side of the transformer 10 through the first fixing plate 22, wherein each first conductive sheet 21 is provided with at least one first engaging hole 211, the size and shape of the first engaging hole 211 correspond to the conductive sheet as the secondary winding 13, and when the conductive sheet as the secondary winding 13 is directly inserted into the first engaging hole 211, the stability of insertion between the two is ensured. In the present embodiment, the first engaging hole 211 is preferably a long hole, but is not limited thereto, and the three first conductive sheets 21 may have the same or different structures, which can be flexibly selected by those skilled in the art according to specific needs.

Referring to fig. 2-4, in the present embodiment, the first fixing plate 22 is provided with a third engaging hole 221 corresponding to the first engaging hole 211, and when connecting, the conducting strip serving as the secondary winding 13 sequentially passes through the third engaging hole 221 of the first fixing plate 22 and the first engaging hole 211 of the first conducting strip 21, so as to implement the installation of the first fixing plate 22 and the first conducting strip 21, and the first fixing plate 22 is disposed to make the connection between the first conducting base 20 and the transformer 10 more stable, thereby effectively avoiding the problem that the first conducting base 20 and the secondary winding 13 cannot be electrically connected due to impact or shaking.

More specifically, a first protrusion and a first recess are disposed between the first fixing plate 22 and the first conductive plate 21, respectively, so as to connect the first conductive plate 21 to the first fixing plate 22. In this embodiment, the first fixing plate 22 is provided with a plurality of first protruding portions 222, the first protruding portions 222 may be columns, bumps or other protruding structures with any shapes, the first conductive sheet 21 is concavely provided with first concave portions 212 corresponding to the first protruding portions 222, the first concave portions 212 may be holes, grooves or other concave structures with any shapes, and the first conductive sheet 21 is connected to the first fixing plate 22 by the engagement of the first protruding portions 222 and the first concave portions 212. Of course, in other embodiments, the positions of the first protrusion 222 and the first recess 212 may be interchanged.

Furthermore, the first fixing plate 22 is further provided with a mounting groove 223 corresponding to the shape of the first conductive sheet 21, the first protrusion 222 is convexly disposed in the mounting groove 223, the first conductive sheet 21 is embedded into the mounting groove 223, and the first recess 212 is connected to the first protrusion 222 in a clamping manner, so as to further enhance the connection strength between the first fixing plate 22 and the first conductive sheet 21.

Referring to fig. 3 again, one side of the transformer 10 is provided with a plurality of first protruding columns 14, the first fixing plate 22 is further provided with fifth engaging holes 224 opposite to the first protruding columns 14, the first fixing plate 22 is connected to the transformer 10 by engaging the fifth engaging holes 224 with the first protruding columns 14, and the secondary winding 13 sequentially penetrates through the third engaging holes 221 of the first fixing plate 22 and the first engaging holes 211 of the first conductive sheet 21, so that the connection among the transformer 10, the first fixing plate 22, and the first conductive sheet 21 is more stable.

Referring again to fig. 2-4, the transformer 10 is provided with at least one winding base 12, the winding base 12 being used to mount a primary winding, and a secondary winding 13 being provided on both sides of the winding base 12. In the present embodiment, a winding base 12 and two secondary windings 13 are provided, and the secondary windings 13 are provided on two opposite sides of the winding base 12. Of course, the number of the winding base 12, the primary winding and the secondary winding 13 is not limited in this embodiment.

Referring to fig. 3-4, the winding base 12 includes a winding base 121, and an upper cover 122 and a base 123 connected to the upper and lower sides of the winding base, wherein a protrusion and a locking portion are respectively disposed between the winding base 121 and the upper cover 122, and the base 123, and the winding base 121 and the upper cover 122, and the base 123 are mounted and connected by the protrusion and the locking portion. The winding base 121 is used for winding a primary winding, and one end of the base 123 and one end of the upper cover 122 are respectively provided with the first protruding columns 14, the first protruding columns 14 may be linearly arranged or staggered, or of course, only one of the base 123 and the upper cover 122 may be provided with the first protruding columns 14.

More specifically, the upper side of the winding seat 121 is provided with at least one first projection 1211, the lower side of the winding seat 121 is provided with at least one second projection 1212, and the first projection 1211 and the second projection 1212 protrude in the radial direction of the winding seat 121, as shown in fig. 4. The upper cover 122 has a first engaging portion 1221 corresponding to the first bump 1211, the base 123 has a second engaging portion 1231 corresponding to the second bump 1212, and the first engaging portion 1221 and the second engaging portion 1231 penetrate through the upper and lower surfaces thereof. During connection, the upper cover 122 moves upward along the axial direction of the winding base 121, and the first protrusion 1211 slides to be engaged with the first engaging portion 1221, and correspondingly, the base 123 moves downward along the axial direction of the winding base 121, and the second protrusion 1212 slides to be engaged with the second engaging portion 1231. The first engaging portion 1221 and the second engaging portion 1231 can be grooves, holes, notches, etc. as long as they can be engaged with the first protrusion 1211 correspondingly. Of course, the positions of the first bump 1211 and the first engaging portion 1221 and the positions of the second bump 1212 and the second engaging portion 1231 can be interchanged.

As shown in fig. 2-4, the upper cover 122, the winding seat 121, and the seat body 123 are respectively provided with corresponding through holes, and after the three are installed, the through holes of the three are communicated to form a through channel. Meanwhile, the middle part of the conducting plate as the secondary winding 13 is hollow to form a hole, and the hole on the conducting plate is correspondingly communicated with the through channel.

More specifically, the magnetic core assembly 11 includes a first magnetic core body 111 and a second magnetic core body 112, the first magnetic core body 111 has a first axial core portion 1111, and the second magnetic core body 112 has a second axial core portion 1121. During assembly, the first axial center portion 1111 and the second axial center portion 1121 penetrate through the hole of the secondary winding 13 and the through channel of the winding base 12, so as to assemble the transformer 10, so as to generate an induced voltage between the primary winding and the secondary winding 13 by utilizing the electromagnetic induction, thereby achieving the purpose of voltage conversion.

Understandably, the transformer assembly 1 of the present invention may further be provided with a second conductive base 30 to facilitate connection between the primary winding and the main circuit board, and such an embodiment will be described with reference to fig. 5-13.

Referring to fig. 5-11, in a second embodiment of the transformer assembly 1 of the present invention, a second conductive base 30 is further disposed. The structure and arrangement of the first conductive base 20 are the same as those of the first embodiment, and therefore, the description thereof will not be repeated.

In the embodiment, the second conductive base 30 is disposed on the other side of the transformer 10 relative to the first conductive base 20, and includes two second conductive sheets 31, the two second conductive sheets 31 have the same structure and are symmetrically disposed, wherein each second conductive sheet 31 has at least one second engaging hole 311, the second conductive sheet 31 is engaged with the transformer 10 through the second engaging hole 311, and the second conductive sheet 31 is electrically connected to the primary winding.

Preferably, since the primary winding is a coil, the coil is wound on the winding base 12 and then soldered to the second conductive sheet 31 to achieve electrical connection.

In this embodiment, the other side of the transformer 10 is further provided with a second protruding pillar 15, the second protruding pillar 15 and the first protruding pillar 14 protrude in the opposite direction relative to the transformer 10, the first fixing plate 22 of the first conductive base 20 is clamped to the first protruding pillar 14, and the second conductive sheet 31 of the second conductive base 30 is directly clamped to the second protruding pillar 15, as shown in fig. 5.

Referring to fig. 7-9, the structure of the transformer 10 in this embodiment is slightly different from that in the first embodiment, specifically, three winding bases 12 and four secondary windings 13 are provided, the three winding bases 12 are respectively provided between two adjacent secondary windings 13, and each winding base 12 is provided with one primary winding. Of course, the number of the winding base 12, the primary winding and the secondary winding 13 is not limited in this embodiment.

Referring to fig. 8-11, each winding base 12 includes a winding base 121, and an upper cover 122 and a base 123 connected to upper and lower sides of the winding base, the winding base 121 is used for winding a primary winding, and a first protruding pillar 14 (see fig. 8) and a second protruding pillar 15 are respectively disposed on two opposite sides of the base 123, of course, the first protruding pillar 14 and the second protruding pillar 15 may be disposed only on the upper cover 122, or the first protruding pillar 14 and the second protruding pillar 15 may be disposed on both the base 123 and the upper cover 122.

In this embodiment, a bump and a fastening portion are respectively disposed between the winding base 121 and the upper cover 122, and the base 123, and the winding base 121 is connected to the upper cover 122 and the base 123 by the fastening of the bump and the fastening portion. Specifically, the upper side of the winding base 121 is provided with at least one first projection 1211, the lower side of the winding base 121 is provided with at least one second projection 1212, and the first projection 1211 and the second projection 1212 respectively protrude along the axial direction of the winding base 121, that is, the first projection 1211 and the second projection 1212 are respectively protruded on the upper side and the lower side of the winding base 121. The top cover 122 has a first engaging portion 1221 corresponding to the first protrusion 1211, and the base 123 has a second engaging portion 1231 corresponding to the second protrusion 1212. During connection, the upper cover 122 moves upward along the axial direction of the winding base 121, and the first protrusion 1211 is engaged with the first engaging portion 1221, and correspondingly, the base 123 moves downward along the axial direction of the winding base 121, and the second protrusion 1212 is engaged with the second engaging portion 1231. The first engaging portion 1221 and the second engaging portion 1231 can be grooves, holes, notches, etc. as long as they can be engaged with the first protrusion 1211 correspondingly. In addition, the positions of the first bump 1211 and the first engaging portion 1221 and the positions of the second bump 1212 and the second engaging portion 1231 may be interchanged.

More specifically, the upper cover 122, the winding seat 121, and the seat body 123 are respectively provided with corresponding through holes, and after the three are installed, the through holes of the three are communicated to form a through channel. Meanwhile, the middle part of the conducting plate as the secondary winding 13 is hollow to form a hole, and the hole on the conducting plate is correspondingly communicated with the through channel.

Referring to fig. 9, in the present embodiment, the structure of the magnetic core assembly 11 is the same as that in the first embodiment, wherein the first axial core portion 1111 and the second axial core portion 1121 of the first magnetic core body 111 are disposed corresponding to the through channel formed on the winding base 12 and the hole formed on the secondary winding 13. During assembly, the first shaft core portion 1111 and the second shaft core portion 1121 are inserted into the hole of the secondary winding 13 and the through channel of the winding base 12 to form the transformer 10, so that the primary winding and the secondary winding 13 generate induced voltage by electromagnetic induction, thereby achieving the purpose of voltage conversion.

More preferably, the second conductive base 30 may further include a second fixing plate 32, and the second conductive sheet 31 is connected to the transformer 10 through the second fixing plate 32.

Referring now to fig. 12-14, a third embodiment of the transformer assembly 1 of the present invention differs from the second embodiment only in that: the second conductive base 30 also includes a second fixing plate 32.

Specifically, the second fixing plate 32 is provided with a plurality of fourth engaging holes 321, at least a portion of the fourth engaging holes 321 corresponds to the second engaging holes 311, when the mounting is performed, a portion of the second protruding columns 15 sequentially penetrate through the fourth engaging holes 321 and the second engaging holes 311, and another portion of the second protruding columns 15 only penetrate through the fourth engaging holes 321, as shown in fig. 12, the connection between the second fixing plate 32 and the second conductive plate 31 is realized. Of course, the fourth engaging holes 321 may correspond to the second engaging holes 311 of the second conductive plate 31 one by one, so that all the second bosses 15 sequentially penetrate through the fourth engaging holes 321 and the second engaging holes 311.

In this embodiment, the second conductive base 30 further includes at least one third conductive sheet 33, a second protrusion and a second recess are disposed between the third conductive sheet 33 and the second fixing plate 32, and the third conductive sheet 33 is electrically connected to the primary winding.

Specifically, in the present embodiment, two third conductive sheets 33 are provided, the two third conductive sheets 33 are identical in structure and symmetrically connected to the second fixing plate 32, wherein the second fixing plate 32 is provided with a second protrusion 322, the second protrusion 322 may be a cylinder, a bump or any other form, the third conductive sheet 33 is provided with a second recess 331 corresponding to the second protrusion 322, the second recess 331 may be a hole, a groove or other structure, and the third conductive sheet 33 is connected to the second fixing plate 32 by the engagement of the second protrusion 322 and the second recess 331.

In addition, the second fixing plate 32 is further concavely provided with a mounting groove 323, the shape of the mounting groove 323 corresponds to the shape of the upper end of the second conductive plate 31 and the upper end of the third conductive plate 33, the upper ends of the second conductive plate 32 and the third conductive plate 33 are correspondingly embedded into the mounting groove 323, and then the two are respectively connected to the second protruding column 15 or the second protruding part 322, so that the stability of connection between the two and the second fixing plate 32 is enhanced.

The structure of the other parts of the transformer assembly structure 1 of this embodiment is the same as that of the second embodiment, and therefore, the description thereof will not be repeated.

Referring to fig. 2-14 again, the present invention further provides a power supply device, which includes a main circuit board, and a primary side circuit, a secondary side circuit, and a transformer combination structure 1 disposed on the main circuit board, wherein the structure of the transformer combination structure 1 may be the structure in any of the above embodiments, and is not described again; the main circuit board, the primary side circuit, the secondary side circuit, etc. are all conventional arrangements well known to those skilled in the art, and will not be described in detail herein.

When the transformer combination structure 1 is connected to the main circuit board, the second conductive sheet 31 is inserted into the welding hole of the main circuit board, the primary winding of the transformer 10 is electrically connected with the primary side circuit arranged on the main circuit board after the soldering process, the first conductive sheet 21 is inserted into the welding hole of the main circuit board, and the secondary winding 13 of the transformer 10 is electrically connected with the secondary side circuit arranged on the main circuit board after the soldering process.

In summary, because the utility model discloses a transformer composite structure 1 sets up first conductive base 20 or/and second conductive base 30 respectively at the double-phase opposite side of transformer 10, wherein, first conductive base 20 is provided with a first fixed plate 22 and at least one first conducting strip 21 of being connected with secondary winding 13 electricity, second conductive base 30 sets up at least one second conducting strip 31 of being connected with primary winding electricity, come to peg graft with the main circuit board through first conducting strip 21, second conducting strip 31 and realize the electricity and be connected, thereby effectively simplify the soldering tin processing procedure that transformer composite structure 1 connects in the main circuit board, and can realize automatic equipment.

Correspondingly, the power supply device with the transformer assembly structure 1 of the present invention also has the same technical effects.

The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the invention, therefore, the invention is not limited thereto.

Claims (18)

1. A transformer assembly, comprising:

a transformer having a primary winding and a secondary winding;

the first conductive base comprises a first fixing plate and at least one first conductive plate connected with the first fixing plate, the first fixing plate is connected to one side of the transformer, each first conductive plate is provided with at least one first clamping hole, and the first clamping holes are used for being electrically connected with the secondary winding.

2. The transformer assembly structure of claim 1, further comprising a second conductive base disposed on the other side of the transformer with respect to the first conductive base and having at least one second conductive plate, wherein each second conductive plate has at least one second engaging hole for connecting with the transformer, and the second conductive plate is electrically connected with the primary winding.

3. The transformer assembly structure of claim 1, wherein the first fixing plate is provided with a third engaging hole corresponding to the first engaging hole, and the secondary winding is inserted into the first engaging hole and the third engaging hole.

4. The transformer combination structure of claim 1, wherein a first protrusion and a first recess are disposed between the first fixing plate and the first conductive plate and are correspondingly engaged with each other.

5. The transformer assembly structure of claim 1, wherein the first fixing plate further has a mounting groove corresponding to the shape of the first conductive sheet, and the first conductive sheet is inserted into the mounting groove.

6. The transformer composite structure of claim 3, wherein the secondary winding is a conductive sheet, and the conductive sheet is inserted into the first engaging hole and the third engaging hole.

7. The transformer assembly structure of claim 2, wherein the second conductive base further comprises a second fixing plate, the second fixing plate is formed with a fourth engaging hole corresponding to the second engaging hole, and the transformer is connected to the second engaging hole and the fourth engaging hole.

8. The transformer assembly of claim 7, wherein the second conductive base further comprises at least one third conductive tab connected to the second mounting plate and electrically connected to the primary winding.

9. The transformer combination structure of claim 8, wherein a second protrusion and a second recess are correspondingly formed between the second fixing plate and the third conductive plate and are engaged with each other.

10. The transformer assembly of claim 8, wherein the primary winding is a coil that is wire-wound to the second and third conductive sheets.

11. The transformer composite structure of claim 1, wherein the first fixing plate is further provided with a fifth engaging hole, and the fifth engaging hole is adapted to be engaged with the transformer.

12. The transformer assembly of claim 2, wherein the transformer has a first protrusion and a second protrusion on opposite sides thereof, the first fixing plate is connected to the first protrusion, and the second conductive base is connected to the second protrusion.

13. The transformer assembly of claim 1, wherein the transformer further comprises a core assembly and at least one winding base disposed within the core assembly, the primary winding is disposed on the winding base, and the secondary winding has at least two windings disposed on opposite sides of the winding base.

14. The transformer assembly according to claim 13, wherein each of the winding bases comprises a winding base and an upper cover and a base connected to opposite sides of the winding base, the winding base is used for winding the primary winding, and the base and/or the upper cover is used for connecting the first fixing plate.

15. The transformer assembly structure of claim 14, wherein a protrusion and a locking portion are disposed between the winding base and the top cover and the base respectively.

16. The transformer assembly of claim 13, wherein the core assembly comprises a first core body and a second core body disposed opposite to each other, and the first core body and the second core body are respectively disposed through the winding base and the secondary winding.

17. A power supply device, comprising a primary circuit and a secondary circuit disposed on a main circuit board, and the transformer assembly structure of any one of claims 1-16, wherein the first conductive sheet is inserted into the main circuit board and electrically connected to the secondary circuit.

18. The power supply of claim 17 wherein the transformer assembly further comprises a second conductive base having a second conductive tab that is plugged into the main circuit board and electrically connected to the primary side circuit and the primary winding, respectively.

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