CN211742852U - Phase-shifted full-bridge circuit high-power high-frequency planar transformer - Google Patents

Abstract

The utility model discloses a phase-shifted full-bridge circuit high-power high-frequency flat transformer, which comprises a transformer main body, wherein the transformer main body consists of a first screw fixing hole, a bottom heat dissipation aluminum shell, a tap, a first screw through hole, a top heat dissipation aluminum shell and a second screw through hole, the utility model has the advantages of unique heat conduction mode, simple structure, small volume, special high heat conduction insulation sheets are adopted by the primary side and the secondary side, the epoxy plate is adopted by the primary side and the secondary side for safety regulation isolation, the volume is reduced, the heat dissipation effect is increased, the winding adopts a multilayer staggered overlapping mode, the critical effect and the skin effect are perfectly solved, the safe distance between the secondary side and a magnetic core is reduced by utilizing the working mode of outputting low-voltage large current by the secondary side, the output power more than four times of common products is achieved by utilizing the high-frequency design scheme, the transformer adopts the unique heat conduction mode, and the heat inside, the heat loss of the transformer is greatly reduced, and the output power and efficiency are greatly improved.

Description

Phase-shifted full-bridge circuit high-power high-frequency planar transformer

Technical Field

The utility model belongs to the technical field of phase-shift full-bridge transformer design is relevant, concretely relates to phase-shift full-bridge circuit high-power high frequency planar transformer.

Background

The transformer is a device for changing alternating voltage by utilizing the principle of electromagnetic induction, and the main components are a primary coil, a secondary coil and an iron core, and the main functions of the transformer comprise voltage transformation, current transformation, impedance transformation, isolation, voltage stabilization and the like.

The existing phase-shifted full-bridge high-power flat-plate transformer has the following problems: the existing phase-shifted full-bridge high-power flat-plate transformer has a complex product structure, so that the production progress is slow, meanwhile, the heat dissipation effect of the transformer is poor, and the device can be burnt out due to high heat after long-time use.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a high-power high frequency planar transformer of phase-shifting full-bridge circuit to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a high-power high frequency planar transformer of phase shift full-bridge circuit, includes the transformer main part, the transformer main part is by first screw fixed orifices, end heat dissipation aluminum hull, take a percentage, first screw through-hole, top heat dissipation aluminum hull and second screw through-hole are constituteed, end heat dissipation aluminum hull upper end is provided with top heat dissipation aluminum hull, both ends respectively are provided with a first screw fixed orifices about end heat dissipation aluminum hull, top heat dissipation aluminum hull right-hand member is provided with takes a percentage, top heat dissipation aluminum hull left end table side a week department evenly is provided with a plurality of second screw through-hole, take a percentage inside table end and evenly be provided with a plurality of first screw through-hole.

Preferably, the top heat dissipation aluminum shell and the bottom heat dissipation aluminum shell include a first connection screw, a first heat dissipation aluminum shell, an aluminum shell heat conduction plate, a secondary copper foil two, a secondary confluence copper pipe, a secondary confluence copper gasket, a secondary copper foil one, a secondary copper foil two, a secondary copper foil three, a secondary copper foil one, a second connection screw, a magnetic core EE one-zero-seven upper, a primary copper foil two-three, a primary copper foil one, a primary copper foil two-two, a high-temperature insulation sheet, an safety epoxy plate, a primary copper foil one, a primary copper foil two, a primary confluence copper foil gasket, a primary confluence copper foil one, a coil, a magnetic core heat conduction silica.

Preferably, the safety epoxy plates are provided with a plurality of safety epoxy plates, and the safety distance between the safety epoxy plates is three points and three millimeters.

Preferably, the first screw through hole and the second screw through hole are both round hole-shaped structures, the first screw through hole is a through hole with a diameter of M six, and the second screw through hole is a through hole with a diameter of M five.

Preferably, the first heat dissipation aluminum shell and the second heat dissipation aluminum shell have the same size and specification, and through holes are formed in the inner surface ends of the first heat dissipation aluminum shell and the second heat dissipation aluminum shell.

Preferably, the specifications of the first zero-seventh upper opening of the magnetic core EE and the first zero-seventh lower opening of the magnetic core EE are the same, and the directions of the first zero-seventh upper opening of the magnetic core EE and the first zero-seventh lower opening of the magnetic core EE correspond to each other.

Preferably, the outer side surface ends of the first connecting screw and the second connecting screw are both provided with thread grooves, the specifications of the first connecting screw and the second connecting screw are different, and the specification of the first connecting screw is larger than that of the second connecting screw.

Preferably, the secondary copper foils are provided with three layers in total, and the first secondary copper foil of the three layers is respectively a first secondary copper foil, a second secondary copper foil and a third secondary copper foil.

Preferably, the second secondary copper foil is provided with three layers, and the three layers of the second secondary copper foil are respectively a second secondary copper foil I, a second secondary copper foil II and a second secondary copper foil III.

Preferably, the output power of the transformer main body is two kilowatts, the operating frequency of the transformer main body is two hundred kilohertz, the input voltage of the transformer main body is between two hundred thirty volts and three hundred fifty volts, the output voltage of the transformer main body is sixty volts, and the output current of the transformer main body is three hundred fifty amperes.

Compared with the prior art, the utility model provides a phase-shift full-bridge circuit high-power high frequency planar transformer possesses following beneficial effect:

(1) the utility model discloses well product heat conduction mode is unique, moreover, the structure is simple, and whole small, it is more convenient in production, comparatively meticulous operating procedure has been avoided, monomer output power reaches more than two kilowatts simultaneously, and former, the secondary side adopts special high heat conduction insulating piece, heat conduction aluminum hull adopts unique flat fixed mode, perfect indispensible exports transformer inside heat, the very big degree reduces transformer heat loss, one, the secondary side adopts the epoxy board to make safety regulation isolation, reduce the volume, increase the radiating effect, the winding adopts the crisscross overlapping mode of multilayer, perfect solution critical effect, skin effect, the leakage inductance almost need not consider, the leakage inductance is two figures behind the decimal point;

(2) the utility model discloses in utilize the working method of vice limit output low-voltage heavy current to reduce the safe distance of vice limit and magnetic core and utilize the high-frequency design to reach output more than the quadruple of ordinary product to reach the miniaturization, high-power, efficient design theory, the transformer adopts unique heat conduction mode, the perfect nothing is derived the inside heat of transformer, very big degree reduces transformer heat loss, very big amplitude promotion output and efficiency.

Drawings

Fig. 1 is a schematic view of the overall assembly structure of the present invention;

FIG. 2 is a schematic view of the part display explosion structure of the present invention;

FIG. 3 is a schematic diagram of the phase-shifted full-bridge circuit and the design parameters of the present invention;

in the figure: 100. a transformer body; 1. a first screw fixing hole; 2. a bottom heat dissipating aluminum housing; 3. tapping; 4. a first screw through hole; 5. a top heat dissipating aluminum housing; 6. a second screw through hole; 7. a first connecting screw; 8. a first heat dissipating aluminum case; 9. an aluminum shell heat-conducting plate; 10. a second copper foil; 11. a secondary confluence copper pipe; 12. a secondary confluence copper gasket; 13. a first secondary copper foil; 14. secondary copper foil II I; 15. secondary copper foils are used one by one; 16. a second copper foil II; 17. secondary copper foil is one and two; 18. secondary copper foil II and III; 19. secondary copper foil I and II; 20. a second connecting screw; 21. one to seven of magnetic core EE; 22. primary copper foil II and copper foil III; 23. one copper foil and three copper foils are formed at a time; 24. a second primary copper foil; 25. a second copper foil is formed; 26. a high temperature insulating sheet; 27. an safety epoxy plate; 28. one copper foil is used for one time; 29. one copper foil for one time; 30. a second primary copper foil; 31. a primary bus copper pad; 32. a primary confluence copper pipe; 33. copper foil one time; 34. coil, magnetic core heat conduction silica gel sheet; 35. one to seven magnetic cores EE; 36. a heat-conducting silica gel sheet; 37. and a second heat dissipation aluminum shell.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Referring to fig. 1-3, the present invention provides a technical solution: a phase-shifted full-bridge circuit high-power high-frequency planar transformer comprises a transformer main body 100, wherein the transformer main body 100 is composed of a first screw fixing hole 1, a bottom heat dissipation aluminum shell 2, a tap 3, a first screw through hole 4, a top heat dissipation aluminum shell 5 and a second screw through hole 6, the top heat dissipation aluminum shell 5 is arranged at the upper end of the bottom heat dissipation aluminum shell 2, the first screw fixing hole 1 is respectively arranged at each of the left end and the right end of the bottom heat dissipation aluminum shell 2, the tap 3 is arranged at the right end of the top heat dissipation aluminum shell 5, a plurality of second screw through holes 6 are uniformly arranged at one circle of the left end surface side of the top heat dissipation aluminum shell 5, a plurality of first screw through holes 4 are uniformly arranged at the inner surface end of the tap 3, the first screw through holes 4 and the second screw through holes 6 are of circular hole structures, the first screw through holes 4 are through holes with the diameter of M six, the second screw through holes 6 are through holes with the diameter of M, A first heat dissipation aluminum shell 8, an aluminum shell heat conduction plate 9, a second copper foil 10, a second confluence copper pipe 11, a second confluence copper gasket 12, a first secondary copper foil 13, a second secondary copper foil 14, a first secondary copper foil 15, a second secondary copper foil 16, a second secondary copper foil 17, a second secondary copper foil 18, a first secondary copper foil 19, a second connection screw 20, a first-seventh-upper 21 of a magnetic core EE, a second-third 22 of a primary copper foil, a first-third 23 of a primary copper foil, a second-second 24 of a primary copper foil, a second-second 25 of a primary copper foil, a high-temperature insulation sheet 26, an safety epoxy plate 27, a first-first copper foil 28, a first-first copper foil 29, a second primary copper foil 30, a first confluence copper gasket 31, a first confluence copper pipe 32, a first-first copper foil 33, a coil, a magnetic core heat conduction silicon film 34, a first-seventh-lower 35 of a magnetic core EE, a heat conduction silicon film 36 and a second heat dissipation aluminum shell 37, the first connection screw 7 and the second connection screw 20 have different specifications so that the first connection screw 7 can be fixed more stably during connection, and the first connection screw 7 has a larger specification than the second connection screw 20.

The safety regulation epoxy boards 27 are provided with a plurality of safety regulation epoxy boards 27, the safety distance between the safety regulation epoxy boards 27 is three points and three millimeters, the safety regulation epoxy boards 27 with three points and three millimeters are used according to the safety regulation requirement of a magnetic component, the primary side and the magnetic core share the same potential, the safety distance is three points and three millimeters, the safety distance between the secondary side and the magnetic core is also three points and three millimeters, each layer of pad between the primary side and the secondary side is provided with a heat-conducting silicon film 36 with the thickness of zero point and six millimeters, the creepage distance between the primary side and the secondary side is seven points and one millimeter, the standards of the safety performance and the safety regulation requirement of the transformer are effectively achieved, the specifications of the magnetic core EE-zero-seven upper 21 and the magnetic core EE-zero-seven lower 35 are the same, the opening directions of the magnetic core EE-zero-seven upper 21 and the magnetic core EE-zero-seven lower 35 are mutually corresponding, the magnetic force can be generated by the magnetic core EE-zero-seven upper 21 and the magnetic core-zero-seven lower 35 for working, the, therefore, the heat generated inside can be dissipated through the first heat dissipation aluminum shell 8 and the second heat dissipation aluminum shell 37, the inner surface ends of the first heat dissipation aluminum shell 8 and the second heat dissipation aluminum shell 37 are respectively provided with a through hole, the first secondary copper foil 13 is provided with three layers, the first three layers of secondary copper foils are respectively secondary copper foils one-to-one 15, the second two secondary copper foils 17 and the first three secondary copper foils 19, the second two secondary copper foils 10 are respectively secondary copper foils one-to-one 14, the second two secondary copper foils 16 and the second two three secondary copper foils 18, the leakage of the design scheme can be almost not considered, the high-frequency critical effect and the skin effect are perfectly solved, the product volume is small, the installation is convenient, the heat dissipation effect is good, the appearance is more attractive, the output power of the transformer main body 100 is two kilowatts, the working frequency of the transformer main body 100 is two hundred kilohertz, the input voltage of the transformer main body 100 is between two thirty volts and three hundred volts, the output voltage of the transformer main body 100 is sixty volts, the output current of the transformer main body 100 is three hundred fifty amperes, so that the safe distance between the secondary side and the magnetic core can be reduced by utilizing the working mode that the secondary side outputs low-voltage large current, and the output power more than four times of a common product can be achieved by utilizing the high-frequency design scheme, so that the design concept of miniaturization, high power and high efficiency is achieved.

The utility model discloses a theory of operation and use flow: the radiating aluminum shell is divided into four parts, the upper part is a plane plate which is a top radiating aluminum shell 5, the plate is provided with two cuboid radiating aluminum strips which are provided with eight M2 countersunk screw holes, the left and right radiating aluminum shells have the same structure and are both plane plates which are respectively a first radiating aluminum shell 8 and a second radiating aluminum shell 37 and are respectively provided with four M2.5 countersunk screw holes, the lower part is also a plane plate which is provided with two cuboid radiating aluminum strips, the transformer body is arranged between the top radiating aluminum shell 5, the first radiating aluminum shell 8, the second radiating aluminum shell 37 and the bottom radiating aluminum shell 2, and when the top radiating aluminum shell 5 and the bottom radiating aluminum shell 2 lock the first radiating aluminum shell 8 and the second radiating aluminum shell 37 on the left and right sides, the four cuboid radiating aluminum strips on the upper and lower two side plates are just pressed on a first radiating aluminum piece and a second radiating aluminum piece as isolating insulators through coils and heat conducting silica gel pieces 36 of a magnetic core; when the first heat-dissipation aluminum shell 8 and the second heat-dissipation aluminum shell 37 lock the top heat-dissipation aluminum shell 5 and the bottom heat-dissipation aluminum shell 2, the first heat-dissipation aluminum shell 8 and the second heat-dissipation aluminum shell 37 can be flatly attached to the magnetic core without gaps, the tolerance range of the magnetic core and the heat-dissipation aluminum shell is not considered in the heat dissipation mode, the transformer is well protected, the primary side of the transformer is divided into four layers, the secondary side of the transformer is divided into four layers, each layer is divided into N small layers for reducing the skin effect, the number of the first and second layers of the transformer is large, in order to fully guide out the heat of the coil part, a layer of heat-conducting silicon rubber sheet 36 is padded between the first and second layers, and a copper sheet and the number of layers are selected according to the current size of a power supply and; the primary side is provided with three copper sheets as pins, the middle pin position is a tap 3, a first screw through hole 4 is reserved, the diameter of the through hole is M5, a confluence copper pipe with the outer diameter of five and the inner diameter of four points of three is inserted into the through hole and is used as a screw hole, in order to control the skin effect, every two layers of the copper sheets are isolated by a high-temperature insulation sheet 26, the tap 3 forms the required number of turns in a soldering tin mode, and

the transformer has the advantages that each layer is connected in parallel to play a role of resisting DC heavy current, pins of copper sheets on two sides are in-out pin positions, two M5 through holes are reserved on the in-out pin positions respectively, the secondary side is also provided with three copper sheets as pins, the middle pin position is a public pin, two M6 through holes are reserved on each pin respectively, six outer diameters are inserted into the through holes, a confluence copper pipe with five points in the inner diameter serves as a screw hole, the secondary side is divided into two windings, each layer of copper sheets is an independent winding, each layer of copper sheets is padded with a high-temperature gasket, each layer is connected in parallel after being connected through soldering tin, the role of resisting DC heavy current is played, the screw through holes on the pins of the copper sheets on the primary side and the secondary side can be directly and electrically connected to a power supply board through screws, the installation is convenient, and the transformer.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (10)

1. The utility model provides a high-power high frequency planar transformer of phase-shifting full-bridge circuit, includes transformer main part (100), its characterized in that: transformer main part (100) comprises first screw fixed orifices (1), end heat dissipation aluminum hull (2), take a percentage (3), first screw through-hole (4), top heat dissipation aluminum hull (5) and second screw through-hole (6), end heat dissipation aluminum hull (2) upper end is provided with top heat dissipation aluminum hull (5), both ends respectively are provided with one first screw fixed orifices (1) about end heat dissipation aluminum hull (2), top heat dissipation aluminum hull (5) right-hand member is provided with takes a percentage (3), top heat dissipation aluminum hull (5) left end table side a week department evenly is provided with a plurality of second screw through-hole (6), take a percentage (3) inside table end evenly is provided with a plurality of first screw through-hole (4).

2. The phase-shifted full-bridge high-power high-frequency planar transformer of claim 1, wherein: the top heat dissipation aluminum shell (5) and the bottom heat dissipation aluminum shell (2) are internally provided with a first connecting screw (7), a first heat dissipation aluminum shell (8), an aluminum shell heat conduction plate (9), a secondary copper foil II (10), a secondary confluence copper pipe (11), a secondary confluence copper gasket (12), a secondary copper foil I (13), a secondary copper foil II I (14), a secondary copper foil one-to-one (15), a secondary copper foil II (16), a secondary copper foil II (17), a secondary copper foil II-III (18), a secondary copper foil I-III (19), a second connecting screw (20), a magnetic core EE I-seven upper part (21), a primary copper foil II-III (22), a primary copper foil I-III (23), a primary copper foil II (24), a primary copper foil II-II (25), a high-temperature insulation sheet (26), an safety epoxy plate (27), a primary copper foil II-I (28), a primary copper foil one-to-one (29), a, The transformer comprises a primary confluence copper gasket (31), a primary confluence copper pipe (32), a primary copper foil I (33), a coil, a magnetic core heat conduction silica gel sheet (34), a magnetic core EE I-VII lower part (35), a heat conduction silica gel sheet (36) and a second heat dissipation aluminum shell (37).

3. The phase-shifted full-bridge high-power high-frequency planar transformer of claim 2, wherein: the safety-regulation epoxy plates (27) are provided with a plurality of safety-regulation epoxy plates, and the safety distance between the safety-regulation epoxy plates (27) is three points and three millimeters.

4. The phase-shifted full-bridge high-power high-frequency planar transformer of claim 1, wherein: the first screw through hole (4) and the second screw through hole (6) are both of round hole-shaped structures, the first screw through hole (4) is a diameter M six-through hole, and the second screw through hole (6) is a diameter M five-through hole.

5. The phase-shifted full-bridge high-power high-frequency planar transformer of claim 2, wherein: the first heat dissipation aluminum shell (8) and the second heat dissipation aluminum shell (37) are identical in size and specification, and through holes are formed in the inner surface ends of the first heat dissipation aluminum shell (8) and the second heat dissipation aluminum shell (37).

6. The phase-shifted full-bridge high-power high-frequency planar transformer of claim 2, wherein: the specifications of the magnetic core EE-top-zero-seven (21) and the magnetic core EE-bottom-zero-seven (35) are the same, and the opening directions of the magnetic core EE-top-zero-seven (21) and the magnetic core EE-bottom-zero-seven (35) are mutually corresponding.

7. The phase-shifted full-bridge high-power high-frequency planar transformer of claim 2, wherein: the outer side surface ends of the first connecting screw (7) and the second connecting screw (20) are respectively provided with a thread groove, the specifications of the first connecting screw (7) and the second connecting screw (20) are different, and the specification of the first connecting screw (7) is larger than that of the second connecting screw (20).

8. The phase-shifted full-bridge high-power high-frequency planar transformer of claim 2, wherein: the first secondary copper foil (13) is provided with three layers, and the three layers of the first secondary copper foil (13) are respectively a first secondary copper foil (15), a second secondary copper foil (17) and a third secondary copper foil (19).

9. The phase-shifted full-bridge high-power high-frequency planar transformer of claim 2, wherein: the second secondary copper foil (10) is provided with three layers, and the three layers of the second secondary copper foil (10) are respectively a second secondary copper foil (14), a second secondary copper foil (16) and a second secondary copper foil (18).

10. The phase-shifted full-bridge high-power high-frequency planar transformer of claim 1, wherein: the output power of the transformer main body (100) is two kilowatts, the working frequency of the transformer main body (100) is two hundred kilohertz, the input voltage of the transformer main body (100) is between two hundred thirty volts and three hundred fifty volts, the output voltage of the transformer main body (100) is sixty volts, and the output current of the transformer main body (100) is three hundred fifty amperes.

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