CN109524219B - Transformer and power module with same - Google Patents
Transformer and power module with same Download PDFInfo
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- CN109524219B CN109524219B CN201910022777.0A CN201910022777A CN109524219B CN 109524219 B CN109524219 B CN 109524219B CN 201910022777 A CN201910022777 A CN 201910022777A CN 109524219 B CN109524219 B CN 109524219B
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- wire outlet
- secondary winding
- primary winding
- section part
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
- H01F27/306—Fastening or mounting coils or windings on core, casing or other support
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
- H01F27/16—Water cooling
Abstract
The invention discloses a transformer and a power module with the same, wherein the transformer comprises: two first iron cores, primary winding and the secondary winding of relative setting, secondary winding includes: the first section part is provided with a first wire outlet end, a second wire outlet end, a first connecting end and a first opening, the first wire outlet end and the second wire outlet end are arranged on one side of the first section part, and the first connecting end is arranged on the other side of the first section part; the second section part is provided with a third wire outlet end, a fourth wire outlet end, a second connecting end and a second opening, the third wire outlet end and the fourth wire outlet end are arranged on one side of the second section part, the second connecting end is arranged on the other side of the second section part, the second section part is parallel to the first section part, and at least part of the second connecting end is connected with at least part of the first connecting end to form a connecting part; at least a portion of the primary winding is located between the first segment and the second segment of the secondary winding.
Description
Technical Field
The present invention relates to a transformer and a power module having the same, and more particularly, to a transformer having enhanced heat dissipation function and a power module having the same.
Background
In the development of power supply modules, water cooling is a common method and is effective. However, water-cooling heat dissipation requires a series of heat conduction processes to transfer heat from the heating element to the water medium, for example, heat is transferred from the transformer to the heat dissipation glue, then to the glue filling cavity, then to the heat dissipation cold plate, then to the pipe wall of the water medium pipe, and finally to the water medium, and the heat is finally taken away by the water medium.
To enhance heat dissipation, heat sinks or other materials that readily conduct heat may be added to the heat-generating component, which would increase the size, weight, and cost of the device.
The transformer consists of an iron core, a winding framework, windings and the like, wherein the windings comprise a primary winding and a secondary winding, and the primary winding and the secondary winding are the most main heating components, so that the method for effectively reducing thermal resistance and improving heat dissipation capacity by increasing the contact area of the main heating components of the transformer and heat dissipation glue is realized except for reducing the loss of the transformer.
Disclosure of Invention
In order to overcome the problems of the prior art, the present invention provides a transformer, which includes:
two first iron cores which are oppositely arranged;
a primary winding; and
a secondary winding comprising:
the first section part is provided with a first wire outlet end, a second wire outlet end, a first connecting end and a first opening, wherein the first wire outlet end and the second wire outlet end are arranged on one side of the first section part, and the first connecting end is arranged on the other side of the first section part;
the second section part is provided with a third wire outlet end, a fourth wire outlet end, a second connecting end and a second opening, the third wire outlet end and the fourth wire outlet end are arranged on one side of the second section part, the second connecting end is arranged on the other side of the second section part, the second section part is parallel to the first section part, and at least part of the second connecting end is connected with at least part of the first connecting end to form a connecting part;
at least part of the primary winding is located in the first section of the secondary winding and the secondary winding
Between the second sections.
In the transformer, the first wire outlet end and the third wire outlet end are arranged oppositely, and the second wire outlet end and the fourth wire outlet end are arranged oppositely.
In the transformer, the first wire outlet end and the second wire outlet end form a first pair of external connection ports of the first coil, the third wire outlet end and the fourth wire outlet end form a second pair of external connection ports of the second coil, and the first pair of external connection ports and the second pair of external connection ports are respectively connected with an external circuit.
In the transformer, the first outgoing line end and the fourth outgoing line end form a third external connection port of the first coil, the second outgoing line end and the third outgoing line end form a fourth external connection port of the second coil, and the third external connection port and the fourth external connection port are respectively connected to an external circuit.
The present invention also provides a transformer, comprising:
two first iron cores which are oppositely arranged;
at least one primary winding; and
at least one secondary winding comprising:
the first section part is provided with a first wire outlet end, a second wire outlet end, a first connecting end and a first opening, wherein the first wire outlet end and the second wire outlet end are arranged on one side of the first section part, and the first connecting end is arranged on the other side of the first section part;
a second section part having a third wire-out end, a fourth wire-out end, a second connection end and a second opening, the third wire-out end and the fourth wire-out end are arranged at one side of the second section part, the second connection end is arranged at the other side of the second section part, the second section part is parallel to the first section part, and at least part of the second connection side of the second section part is at least connected with the first connection side of the first section part
The parts are connected to form a connecting part;
at least a portion of at least one of the primary windings is located in the second of the at least one secondary winding
A segment and the second segment.
In the transformer, the first wire outlet end and the third wire outlet end are arranged oppositely, and the second wire outlet end and the fourth wire outlet end are arranged oppositely.
In the transformer, the first wire outlet end and the second wire outlet end form a first pair of external connection ports of the first coil, the third wire outlet end and the fourth wire outlet end form a second pair of external connection ports of the second coil, and the first pair of external connection ports and the second pair of external connection ports are respectively connected with an external circuit.
In the transformer, the first wire outlet end and the fourth wire outlet end form a third external connection port of the first coil, the second wire outlet end and the third wire outlet end form a fourth external connection port of the second coil, and the third external connection port and the fourth external connection port are respectively connected to an external circuit.
In the transformer, the secondary winding is formed by integrally stamping and bending a single metal conductive sheet.
In the transformer, the metal conductive sheet is a copper metal sheet.
In the transformer, the secondary winding further includes an insulating layer between the first segment and/or the second segment and the first core.
In the transformer, the secondary winding further includes at least one extension portion disposed and connected to at least one side of the connecting portion.
In the transformer, the connecting portion and the extending portion are integrally formed.
In the transformer, the first segment, the at least one primary winding, and the second segment are sequentially arranged.
In the transformer, the first secondary winding, the second secondary winding, the first primary winding, the second secondary winding, the third primary winding and the fourth primary winding are sequentially arranged, and the first section of the first secondary winding, the second primary winding, the first section of the second secondary winding, the third primary winding and the second section of the second secondary winding are sequentially arranged.
In the transformer, the transformer includes a first secondary winding, a second secondary winding, a first primary winding, a second primary winding and a third primary winding, wherein the first section of the first secondary winding, the first primary winding, the first section of the second secondary winding, the second primary winding, the second section of the first secondary winding, the third primary winding and the second section of the second secondary winding are sequentially arranged.
In the transformer, the first wire outlet end, the second wire outlet end, the third wire outlet end and the fourth wire outlet end have the protruding portions, and the protruding portions have a height.
In the transformer, the primary winding comprises a plurality of coils respectively wound in the slots of the bobbin, the bobbin is provided with a raised positioning portion, and the first opening and/or the second opening are/is correspondingly clamped on the positioning portion during assembly.
In the transformer, the coil of the primary winding is composed of three layers of insulated wires.
The transformer further comprises an inductor, wherein the inductor comprises:
the second iron core is arranged on one side of the at least one first iron core;
and the at least one inductance winding is arranged between the second iron core and the first iron core.
The invention also provides a power supply module, which comprises the transformer.
The power module further comprises a cavity, and the transformer is arranged in the cavity.
The power module further comprises a heat dissipation adhesive, wherein the heat dissipation adhesive is arranged in the cavity and at least partially covers the transformer.
The power module further comprises a heat dissipation plate, the heat dissipation plate is arranged at the bottom and/or the periphery of the cavity, and heat conducted to the cavity is conducted out through the heat dissipation plate.
In the above power module, the heat sink is a water-cooling heat sink.
Aiming at the prior art, the invention has the following effects:
1. under certain power (or loss), the heat dissipation is easier, the temperature rise is lower, the size and the weight of the transformer can be properly reduced, the size of the power module can be further reduced, and the light weight of the power module is convenient to realize;
2. on the premise of keeping the volume and the weight unchanged, the power processing capacity of the power supply can be effectively improved;
3. and a quasi-sandwich structure can be formed through proper external connection, so that the coupling between the original secondary side is enhanced, the loss is reduced, and the efficiency is improved.
Drawings
FIGS. 1 and 2 are schematic structural diagrams of a secondary winding according to a first embodiment of the present invention;
FIG. 3 is an exploded view of a first embodiment of the transformer of the present invention;
FIG. 4 is a schematic diagram of the winding assembly of FIG. 3;
FIG. 5 is an exploded view of a second embodiment of the transformer of the present invention;
FIG. 6 is a schematic diagram of the winding assembly of FIG. 5;
FIGS. 7 to 8 are schematic structural views of a secondary winding according to a second embodiment of the present invention;
FIG. 9 is an exploded view of a third embodiment of the transformer of the present invention;
FIG. 10 is a schematic diagram of the winding assembly of FIG. 9;
FIG. 11 is an exploded view of a fourth embodiment of the transformer of the present invention;
FIG. 12 is a schematic view of a magnetic member of the power module according to the present invention;
fig. 13 is a sectional view a-a' of fig. 12.
Wherein the reference numerals are:
Primary winding 12
Secondary winding 13
Second connecting end 1323
Connecting portion 133
Positioning part 141
Insulating layer 134
First secondary winding 13A
Second secondary winding 13B
First primary winding 12A
Second primary winding 12B
Third primary winding 12C
Convex part T
Convex part T1
Transformer TX
Heat radiation plate B
Cavity Q
Detailed Description
The invention is described in further detail below with reference to specific embodiments and with reference to the following figures: the embodiment is implemented on the premise of the technical scheme of the invention, and the implementation mode and the operation process are given, but the protection scope of the invention is not limited by the following embodiments.
Referring to fig. 1 to 4, fig. 1 and 2 are schematic structural diagrams of a secondary winding according to a first embodiment of the present invention; FIG. 3 is an exploded view of a first embodiment of the transformer of the present invention; fig. 4 is a schematic diagram of the winding assembly of fig. 3. As shown in fig. 1 to 4, the transformer TX of the present invention includes: two first iron cores 11 and two windings which are oppositely arranged, wherein the windings comprise a primary winding 12 and a secondary winding 13. The secondary winding 13 includes a first section 131 and a second section 132, the first section 131 has a first outgoing line 1311, a second outgoing line 1312, a first connection 1313 and a first opening 1314, the first outgoing line 1311 and the second outgoing line 1312 are on one side of the first section 131, and the first connection 1313 is on the other side of the first section 131; the second section 132 has a third wire outlet 1321, a fourth wire outlet 1322, a second connecting end 1323 and a second opening 1324, the third wire outlet 1321 and the fourth wire outlet 1322 are on one side of the second section 132, the second connecting end 1323 is on the other side of the second section 132, the second section 132 is parallel to the first section 131, and at least a portion of the second connecting end 1323 is connected with at least a portion of the first connecting end 1312 to form the connecting portion 133; the primary winding 12 is located between the first segment 131 and the second segment 132 of the secondary winding 13.
The primary heat conduction mode of the transformer during operation is that most of the heat of the primary winding 12 is transferred to the secondary winding 13, and the secondary winding 13 conducts the heat to the outside through the connection portion 133 thereof.
Further, the first segment 131 and the second segment 132 have the same or similar profile.
Furthermore, the first wire outlet 1311 is disposed opposite to the third wire outlet 1321, and the second wire outlet 1312 is disposed opposite to the fourth wire outlet 1322.
Still further, in an embodiment, the first wire outlet terminal 1311 and the second wire outlet terminal 1312 constitute a first pair of external connection ports of the first coil, and the third wire outlet terminal 1321 and the fourth wire outlet terminal 1322 constitute a second pair of external connection ports of the second coil. The first pair of external connection ports and the second pair of external connection ports are respectively connected with an external circuit which is not shown in the figure. Specifically, in the present embodiment, a circulation path from the first wire outlet 1311 to the second wire outlet 1312 is formed, and a current flows in from the first wire outlet 1311 and flows out from the second wire outlet 1312, and the structure and the function after the third wire outlet 1321 and the fourth wire outlet 1322 are electrically connected are the same as those of the first wire outlet 1311 to the second wire outlet 1312, and therefore, the description thereof is omitted.
Furthermore, in another embodiment, the first wire outlet 1311 and the fourth wire outlet 1322 form a third pair of external connection ports of the first coil, and the second wire outlet 1312 and the third wire outlet 1321 form a fourth pair of external connection ports of the second coil. The third pair of external connection ports and the fourth pair of external connection ports are respectively connected with an external circuit which is not shown in the figure. The primary winding 12 and the first coil or/and the second coil of the secondary winding form a quasi-sandwich structure, so that the coupling condition of the primary winding and the secondary winding is effectively improved, the loss is reduced, and the power supply efficiency is improved. Specifically, in this embodiment, a structure is formed in which a circulation path from the first wire outlet 1311 to the fourth wire outlet 1322 is formed, and current flows in from the first wire outlet 1311 and flows out from the fourth wire outlet 1322, so that a quasi-trimmings structure is formed together with the primary winding 12 sandwiched therebetween, which effectively enhances the coupling of the primary and secondary windings, and compared with a single-stack structure, the power efficiency can be further improved, and the structure and function of the fourth pair of external connection ports formed by the second wire outlet 1312 and the third wire outlet 1321 are the same as those of the first wire outlet 1311 to the fourth wire outlet 1322, and therefore, no further description is given here.
In this embodiment, the secondary winding 13 is formed by integrally stamping and forming a single metal conductive sheet, which is a copper metal sheet, and then bending along the dotted line in fig. 2, but the invention is not limited thereto.
Referring to fig. 1 to 2 and fig. 5 to 6, fig. 5 is an exploded view of a transformer according to a second embodiment of the present invention; fig. 6 is a schematic diagram of the winding assembly of fig. 5. As shown in fig. 1 to 2 and fig. 5 to 6, the transformer TX of the present invention includes: two first iron cores 11 and windings are oppositely arranged, and the windings comprise at least one primary winding 12 and at least one secondary winding 13. Each secondary winding 13 includes a first section 131 and a second section 132, the first section 131 has a first outgoing line 1311, a second outgoing line 1312, a first connection end 1313 and a first opening 1314, the first outgoing line 1311 and the second outgoing line 1312 are on one side of the first section 131, and the first connection end 1313 is on the other side of the first section 131; the second section 132 has a third wire outlet end 1321, a fourth wire outlet end 1322, a second connecting end 1323 and a second opening 1324, the third wire outlet end 1321 and the fourth wire outlet end 1322 are on one side of the second section 132, the second connecting end 1323 is on the other side of the second section 132, the second section 132 is parallel to the first section 131, and at least a part of the second connecting end 1323 is connected with at least a part of the first connecting end 1313 to form the connecting portion 133; the at least one primary winding 12 is located between the first segment 131 and the second segment 132 of the at least one secondary winding 13. The heat conduction manner in this embodiment is the same as that in the previous embodiment, and is not described herein again.
The transformer TX further includes at least one bobbin 14, each primary winding 12 includes a plurality of coils wound in the slots of the bobbin 14, a protruding positioning portion 141 is disposed on the bobbin 14, and the first opening 1314 and/or the second opening 1324 are/is correspondingly engaged with the positioning portion 141 during assembly. In this embodiment, the coil of the primary winding is formed by three layers of insulation wires, which is a preferred embodiment, but the invention is not limited thereto.
In this embodiment, the first section 131 and the second section 132 may have the same or similar profile.
In the present embodiment, the first wire outlet terminal 1311 is disposed opposite to the third wire outlet terminal 1321, and the second wire outlet terminal 1312 is disposed opposite to the fourth wire outlet terminal 1322.
In the present embodiment, the secondary winding 13 is formed by integrally stamping and forming a single metal conductive sheet, which is a copper metal sheet, and then bending the metal conductive sheet along the dotted line in fig. 2, but the invention is not limited thereto.
Further, in a preferred embodiment, the transformer TX further includes an insulating layer 134, and the insulating layer 134 is disposed between the first segment 131 and/or the second segment 132 and the first core 11, but the position and the number of the insulating layers are not limited in the present invention.
Still further, each secondary winding 13 further includes at least one extension portion 135 disposed and connected to at least one side of the connection portion 133; in the embodiment, the connecting portion 133 and the extending portion 135 are integrally formed, but the invention is not limited thereto.
Further, as shown in fig. 1 to 3, the first segment 131, the at least one primary winding 12, and the second segment 132 are sequentially arranged, and in another embodiment, as shown in fig. 5 and 6, the transformer TX includes a first secondary winding 13A, a second secondary winding 13B, a first primary winding 12A, a second primary winding 12B, and a third primary winding 12C, and the first segment 131 of the first secondary winding 13A, the first primary winding 12A, the second segment 132 of the first secondary winding 13A, the second primary winding 12B, the first segment 131 of the second secondary winding 13B, the third primary winding 13C, and the second segment 132 of the second secondary winding 13B are sequentially arranged, but the present invention does not limit the arrangement order of the windings.
In another embodiment of the present invention, the transformer TX includes a first secondary winding 13A, a second secondary winding 13B, a first primary winding 12A, a second primary winding 12B and a third primary winding 12C, and a first section 131 of the first secondary winding 13A, a first section 131 of the first primary winding 12A and the second secondary winding 13B, a second primary winding 12B, a second section 132 of the first secondary winding 13A, a third primary winding 13C and a second section 132 of the second secondary winding 13B are sequentially arranged.
It should be noted that, in this embodiment, the first wire outlet 1311, the second wire outlet 1312, the third wire outlet 1321 and the fourth wire outlet 1321 respectively have a protrusion T and a protrusion T1, the protrusion T and the protrusion T1 have a height, and the protrusion T1 are used to be inserted into the printed circuit board, so that the PCB board can be adapted to different PCB board thicknesses by adjusting the size of the protrusion, or the distance between the connecting portion 133 and an external heat sink can be controlled.
Referring to fig. 7 to 8, fig. 7 and 8 are schematic structural diagrams of a secondary winding according to a second embodiment of the present invention. The structure of the secondary winding shown in fig. 7 and 8 is substantially the same as that of the secondary winding shown in fig. 1 and 2, and therefore, the same parts are not described again, and different parts will be described below. In this embodiment, a portion of the second connection end 1323 is connected to a portion of the first connection end 1312 to form the connection portion 133, and the extension portion 135 is disposed and connected to one side of the connection portion 133. Referring to fig. 9 and 10, fig. 9 is an exploded view of a transformer TX according to a third embodiment of the present invention; fig. 10 is a schematic diagram of the winding assembly of fig. 9. The structure of the transformer shown in fig. 9 and 10 is substantially the same as that of the transformer shown in fig. 5 and 6, and therefore, the same parts are not described again, and different parts will be described below. In this embodiment, the transformer TX includes a first secondary winding 13A, a second secondary winding 13B, a first primary winding 12A, a second primary winding 12B, and a third primary winding 12C, wherein a first section 131 of the first secondary winding 13A, a first section 131 of the first primary winding 12A, a first section 131 of the second secondary winding 13B, a second primary winding 12B, a second section 132 of the first secondary winding 13A, a third primary winding 12C, and a second section 132 of the second secondary winding 13B are sequentially arranged.
In the present embodiment, the structure of the secondary winding shown in fig. 7 and 8 is used as a preferred embodiment, but the present invention is not limited thereto.
Referring to fig. 11, fig. 11 is an exploded view of a transformer according to a fourth embodiment of the present invention. The structure of the transformer shown in fig. 11 is substantially the same as the structure of the transformer shown in fig. 5 and 6, and the structure of the transformer shown in fig. 11 may also be the structure of the transformer shown in fig. 9 and 10, so that the same parts are not described again here, and different parts will now be described below. In this embodiment, the transformer TX further includes an inductor 15, where the inductor 15 includes a second core 151 and at least one inductor winding 152; the second core 151 is disposed at one side of at least one first core 11; at least one inductance winding 152 is disposed between the second core 151 and the first core 11.
Referring to fig. 12 and 13, fig. 12 is a partial structural schematic view of a magnetic member of a power module according to the present invention; fig. 13 is a sectional view a-a' of fig. 12. As shown in fig. 12 and 13, the magnetic member portion of the power module includes: a cavity Q and the transformer TX of any of the previous embodiments, the transformer TX being disposed in the cavity Q.
Furthermore, the magnetic part of the power module further comprises heat dissipation glue, and the heat dissipation glue is arranged in the cavity Q and at least partially covers the transformer TX.
Furthermore, the magnetic part of the power module further comprises a heat dissipation plate B, the heat dissipation plate B is arranged at the bottom and/or the periphery of the cavity Q, and heat conducted to the cavity Q is conducted out through the heat dissipation plate B. In the embodiment, the heat dissipation plate B is a water-cooling heat dissipation plate, but the invention is not limited thereto.
The connecting part 133 is in full contact with the heat-dissipating glue, so that the thermal resistance between the heating body and the refrigerant is greatly reduced, and meanwhile, the heat generated by the secondary winding and the heat generated by part of the primary winding are easily conducted to the connecting part 133 and the extending part 135, thereby being greatly beneficial to heat dissipation and reduction of the internal temperature of the transformer coil. In this embodiment, the heat conduction mainly includes two paths, the first path is that the primary winding is sequentially conducted from the inner ring to the outer ring until the primary winding contacts with the heat dissipation glue, the second path is that the heat of the inner layer of the primary winding is transferred to the secondary conductive copper sheet through the winding frame, or the heat of the inner layer of the primary winding is transferred to the secondary conductive copper sheet, the secondary conductive copper sheet then conducts the heat to the connection portion 133 and the extension portion 135 through itself and contacts with the heat dissipation glue, and the second heat conduction path becomes the main path. Therefore, the heat generated by the primary winding or the secondary winding can be transferred to the connection portion 133 and the extension portion 135 through a certain heat transfer path, and then the heat is transferred to the heat dissipation rubber body and then the heat dissipation rubber body.
In summary, the transformer and the power module of the invention can dissipate heat more easily and increase temperature lower under a certain power (or loss), and can appropriately reduce the volume and weight of the transformer, thereby reducing the volume of the power module and facilitating the lightening of the power module; or on the premise of keeping the volume and the weight unchanged, the power processing capacity of the power supply can be effectively improved; and a quasi-sandwich structure can be formed through proper external connection, so that the coupling of an original secondary side is enhanced, the loss is reduced, and the power supply efficiency is improved.
It should be noted that: the above embodiments are merely illustrative of the present invention, and do not limit the technical solutions described in the present invention; meanwhile, although the present invention has been described in detail with reference to the above embodiments, it will be understood by those skilled in the art that the present invention may be modified and equivalents may be substituted; therefore, all technical solutions and modifications which do not depart from the spirit and scope of the present invention should be construed as being included in the scope of the appended claims.
Claims (25)
1. A transformer, comprising:
two first iron cores which are oppositely arranged;
a primary winding; and
a secondary winding comprising:
the first section part is provided with a first wire outlet end, a second wire outlet end, a first connecting end and a first opening, wherein the first wire outlet end and the second wire outlet end are arranged on one side of the first section part, and the first connecting end is arranged on the other side of the first section part;
the second section part is provided with a third wire outlet end, a fourth wire outlet end, a second connecting end and a second opening, the third wire outlet end and the fourth wire outlet end are arranged on one side of the second section part, the second connecting end is arranged on the other side of the second section part, the second section part is parallel to the first section part, and at least part of the second connecting end and at least part of the first connecting end are oppositely bent and connected to form a connecting part;
at least a portion of the primary winding is positioned between the first segment and the second segment of the secondary winding.
2. The transformer of claim 1, wherein the first outlet terminal is disposed opposite the third outlet terminal, and the second outlet terminal is disposed opposite the fourth outlet terminal.
3. The transformer of claim 2, wherein the first and second wire outlet terminals form a first pair of external connection ports for a first coil, the third and fourth wire outlet terminals form a second pair of external connection ports for a second coil, and the first and second external connection ports are respectively connected to an external circuit.
4. The transformer of claim 2, wherein the first and fourth outlet terminals form a third external connection port of the first coil, the second and third outlet terminals form a fourth external connection port of the second coil, and the third and fourth external connection ports are respectively connected to an external circuit.
5. A transformer, comprising:
two first iron cores which are oppositely arranged;
at least one primary winding; and
at least one secondary winding comprising:
the first section part is provided with a first wire outlet end, a second wire outlet end, a first connecting end and a first opening, wherein the first wire outlet end and the second wire outlet end are arranged on one side of the first section part, and the first connecting end is arranged on the other side of the first section part;
the second section part is provided with a third wire outlet end, a fourth wire outlet end, a second connecting end and a second opening, the third wire outlet end and the fourth wire outlet end are arranged on one side of the second section part, the second connecting end is arranged on the other side of the second section part, the second section part is parallel to the first section part, and at least part of the second connecting side of the second section part is oppositely bent and connected with at least part of the first connecting side of the first section part to form a connecting part;
at least a portion of at least one of the primary windings is located between the first segment and the second segment of the at least one secondary winding.
6. The transformer of claim 5, wherein the first outlet terminal is disposed opposite the third outlet terminal, and the second outlet terminal is disposed opposite the fourth outlet terminal.
7. The transformer of claim 6, wherein the first and second wire outlet terminals form a first pair of external connection ports for a first coil, the third and fourth wire outlet terminals form a second pair of external connection ports for a second coil, and the first and second external connection ports are respectively connected to an external circuit.
8. The transformer of claim 6, wherein the first and fourth outlet terminals form a third external connection port of the first coil, the second and third outlet terminals form a fourth external connection port of the second coil, and the third and fourth external connection ports are respectively connected to an external circuit.
9. The transformer of claim 5, wherein the secondary winding is formed by integrally stamping and bending a single piece of conductive metal sheet.
10. The transformer of claim 9, wherein the metallic conductive sheet is a copper metal sheet.
11. The transformer of claim 5 or 8, wherein the secondary winding further comprises an insulating layer between the first and/or second segments and the first core.
12. The transformer of claim 5 or 8, wherein the secondary winding further comprises at least one extension disposed and connected to at least one side of the connection portion.
13. The transformer of claim 12, wherein the connecting portion and the extending portion are an integrally formed piece.
14. The transformer of claim 5, wherein the first segment, the at least one primary winding, and the second segment are arranged in series.
15. The transformer of claim 5, wherein the transformer comprises a first secondary winding, a second secondary winding, a first primary winding, a second primary winding, and a third primary winding, wherein the first segment of the first secondary winding, the first primary winding, the second segment of the first secondary winding, the second primary winding, the first segment of the second secondary winding, the third primary winding, and the second segment of the second secondary winding are arranged in sequence.
16. The transformer of claim 5, wherein the transformer comprises a first secondary winding, a second secondary winding, a first primary winding, a second primary winding, and a third primary winding, wherein the first segment of the first secondary winding, the first primary winding, the first segment of the second secondary winding, the second primary winding, the second segment of the first secondary winding, the third primary winding, and the second segment of the second secondary winding are arranged in sequence.
17. The transformer of claim 5, wherein the first, second, third and fourth wire outlet ends have a protrusion, the protrusion having a height.
18. The transformer of claim 5, further comprising at least one bobbin, wherein the primary winding comprises a plurality of coils respectively wound in slots of the bobbin, and the bobbin is provided with a protruding positioning portion, and the first opening and/or the second opening are/is correspondingly engaged with the positioning portion during assembly.
19. The transformer of claim 5, wherein the primary winding comprises a coil, the coil comprising a tri-layer of insulated wire.
20. The transformer of claim 5, further comprising an inductor, the inductor comprising:
the second iron core is arranged on one side of at least one first iron core;
and the at least one inductance winding is arranged between the second iron core and the first iron core.
21. A power supply module comprising a transformer according to any one of claims 1 to 20.
22. The power module of claim 21, further comprising a cavity, the transformer being disposed in the cavity.
23. The power module of claim 22, further comprising a heat sink gel disposed within the cavity and at least partially encasing the transformer.
24. The power module of claim 22, further comprising a heat dissipation plate disposed at the bottom and/or the periphery of the cavity, wherein heat conducted to the cavity is conducted out through the heat dissipation plate.
25. The power module of claim 24, wherein the heat sink is a water-cooled heat sink.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910022777.0A CN109524219B (en) | 2019-01-10 | 2019-01-10 | Transformer and power module with same |
| US16/729,513 US11581118B2 (en) | 2017-06-08 | 2019-12-30 | Transformer and power supply module with high thermal efficiency |
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| CN109524219A (en) | 2019-03-26 |
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