Transformer

Abstract

The embodiment of the utility model provides a transformer, which belongs to the technical field of power supplies and comprises at least one first winding, at least one second winding and a magnetic core. The first windings and the second windings are wound on the magnetic core in the axis direction of the magnetic core. In the same second winding, each second winding comprises a plurality of conductive parts, an insulating part is arranged between every two adjacent conductive parts, and the conductive parts and the insulating parts are of an integrated structure. The plurality of conductive parts and the insulating parts of the same second winding are arranged into the integrated structure, so that the position relation of the plurality of conductive parts and the insulating parts is fixed, the distance between two adjacent conductive parts is always small, the opposite area between the two adjacent conductive parts can be always large, and the winding stability is improved. The coupling effect between two adjacent conductive parts is improved, so that the loss of the second winding, the transformer and the electronic equipment is reduced. Therefore, according to the transformer provided by the embodiment of the invention, the loss of the transformer can be reduced.

Description

Technical Field

[0001] The present application relates to the technical field of power supply, and in particular to a transformer. Background Art

[0002] With the continuous development of power supply technology, power supply devices are gradually moving towards miniaturization and high power density. LLC resonant converters have been widely used in industrial power supplies, server / communication power supplies, medical power supplies, and other civilian power supplies due to their soft switching characteristics.

[0003] In the related art, the power supply device may include a primary circuit, a transformer and a secondary circuit, the transformer includes a primary winding, a secondary winding and a magnetic core, the primary winding and the secondary winding are both arranged around the outer periphery of the winding column of at least part of the magnetic core. The primary winding is electrically connected to the primary circuit, and the secondary winding is electrically connected to the secondary circuit.

[0004] However, in conventional transformer designs, the losses of the windings on the secondary side or the primary side with low voltage and high current are likely to be high, resulting in higher overall losses of the transformer. Utility Model Content

[0005] In view of at least one of the above technical problems, an embodiment of the present application provides a transformer that can reduce transformer loss.

[0006] The embodiments of the present application provide the following technical solutions:

[0007] A first aspect of an embodiment of the present application provides a transformer including a first winding, two second windings and a magnetic core. The first winding and the two second windings are both wound on the winding pole of the magnetic core along the axial direction of the magnetic core, and the two second windings are respectively located on both sides of the first winding. The two second windings each include a plurality of conductive parts. In the same second winding, an insulating part is provided between each two adjacent conductive parts, and the plurality of conductive parts and the insulating part are an integrated structure.

[0008] The transformer provided in the embodiment of the present application sets a plurality of conductive parts of the same second winding and an insulating part located between the plurality of conductive parts as an integral structure. The plurality of conductive parts and the insulating part can be assembled to form an integral structure, thereby fixing the positional relationship between the plurality of conductive parts and the insulating part, so that two adjacent conductive parts can always be in a good fitting state, so that the distance between the two adjacent conductive parts is always small. In addition, since the positions of the two adjacent conductive parts are fixed, there will be no misalignment, so that the facing area between the two adjacent conductive parts can always be large, thereby improving the coupling effect between the two adjacent conductive parts, improving the energy transmission between the two adjacent conductive parts, thereby reducing the loss of the second winding, so as to reduce the loss of the transformer and the electronic equipment.

[0009] In a possible embodiment, in the same second winding, each conductive member includes two pins, the vertical projections of the two pins of a part of the conductive members overlap on the plane where the conductive members are located, and an insulating member is provided between two adjacent pins along the axial direction of the conductive member, and the multiple pins and the insulating member along the axial direction of the conductive member form an integrated structure.

[0010] In a possible implementation, the two pins of each conductive element are used to realize series connection or parallel connection between different conductive elements.

[0011] In a possible implementation manner, the insulating member is adhesive, and in the same second winding, two adjacent conductive members are bonded and connected via the insulating member.

[0012] In a possible implementation manner, a packaging component is sleeved on the outer side of the same second winding.

[0013] In a possible implementation, the manufacturing process of the second winding includes printed circuit board (PCB) wiring or copper wire pressing.

[0014] In a possible embodiment, the transformer also includes a winding bobbin located at the outer periphery of the winding column of the magnetic core, and a winding groove is provided on the winding bobbin along the axial direction of the winding bobbin. The first winding is wound in the winding groove, and the two second windings are respectively located on the winding bobbin on both sides of the winding groove.

[0015] In a possible implementation manner, a gap is provided between the winding slot and the two second windings.

[0016] In a possible implementation, the manufacturing process of the first winding includes a winding with a bobbin or a bobbin or an air-core coil.

[0017] A second aspect of an embodiment of the present application provides a transformer including two first windings, a second winding and a magnetic core. The two first windings and the second winding are both wound on the magnetic core along the axial direction of the magnetic core, and the two first windings are respectively located on both sides of the second winding. The second winding includes a plurality of conductive parts, an insulating part is provided between each two adjacent conductive parts, and the plurality of conductive parts and the insulating part are an integrated structure.

[0018] The transformer provided in the embodiment of the present application sets a plurality of conductive parts of the same second winding and an insulating part located between the plurality of conductive parts as an integral structure. The plurality of conductive parts and the insulating part can be assembled to form an integral structure, thereby fixing the positional relationship between the plurality of conductive parts and the insulating part, so that two adjacent conductive parts can always be in a good fitting state, so that the distance between the two adjacent conductive parts is always small. In addition, since the positions of the two adjacent conductive parts are fixed, there will be no misalignment, so that the facing area between the two adjacent conductive parts can always be large, thereby improving the coupling effect between the two adjacent conductive parts, improving the energy transmission between the two adjacent conductive parts, thereby reducing the loss of the second winding, so as to reduce the loss of the transformer and the electronic equipment.

[0019] In a possible embodiment, in the second winding, each conductive member includes two pins, the vertical projections of the two pins of a part of the conductive members overlap on the plane where the conductive members are located, and an insulating member is provided between two adjacent pins along the axial direction of the conductive member, and the multiple pins and the insulating member along the axial direction of the conductive member form an integrated structure.

[0020] In a possible implementation, the two pins of each conductive element are used to realize series connection or parallel connection between different conductive elements.

[0021] In a possible embodiment, the transformer also includes a winding bobbin located at the outer periphery of the winding column of the magnetic core, and two winding grooves are provided on the winding bobbin along the axial direction of the winding bobbin. The two first windings are respectively wound in the two winding grooves, and the second winding is arranged on the winding bobbin between the two winding grooves.

[0022] In a possible implementation manner, a gap is provided between the two winding slots and the second winding.

[0023] In a possible implementation, the manufacturing process of the first winding includes a winding with a bobbin or a bobbin or an air-core coil.

[0024] A third aspect of an embodiment of the present application provides a transformer including a first winding, a second winding and a magnetic core. The first winding and the second winding are both wound on the magnetic core along the axial direction of the magnetic core. One of the first winding or the second winding includes a plurality of conductive parts, and an insulating part is provided between each two adjacent conductive parts, and the plurality of conductive parts and the insulating part are an integrated structure.

[0025] The transformer provided in the embodiment of the present application sets a plurality of conductive parts of the same second winding and an insulating part located between the plurality of conductive parts as an integral structure. The plurality of conductive parts and the insulating part can be assembled to form an integral structure, thereby fixing the positional relationship between the plurality of conductive parts and the insulating part, so that two adjacent conductive parts can always be in a good fitting state, so that the distance between the two adjacent conductive parts is always small. In addition, since the positions of the two adjacent conductive parts are fixed, there will be no misalignment, so that the facing area between the two adjacent conductive parts can always be large, thereby improving the coupling effect between the two adjacent conductive parts, improving the energy transmission between the two adjacent conductive parts, thereby reducing the loss of the second winding, so as to reduce the loss of the transformer and the electronic equipment.

[0026] In a possible embodiment, each conductive part includes two pins, the vertical projections of the two pins of a part of the conductive parts overlap on the plane where the conductive parts are located, and an insulating part is provided between two adjacent pins along the axial direction of the conductive part, and the multiple pins and the insulating part along the axial direction of the conductive part form an integrated structure.

[0027] In a possible implementation, the two pins of each conductive element are used to realize series connection or parallel connection between different conductive elements.

[0028] In a possible embodiment, the transformer also includes a winding bobbin located on the outer periphery of the winding column of the magnetic core, and a winding groove is provided on the winding bobbin along the axial direction of the winding bobbin. One of the first winding and the second winding is wound in the winding groove, and the other winding is located on the winding bobbin on one side of the winding groove.

[0029] In a possible implementation manner, a gap is provided between the winding slot and another winding.

[0030] In a possible implementation, the manufacturing process of the first winding includes a winding with a bobbin or a bobbin or an air-core coil.

[0031] The construction of the present application as well as its other objects and beneficial effects will be more clearly understood through the description of the preferred embodiments in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0033] Figure 1 A circuit topology diagram of a first circuit, a second circuit and a transformer provided in an embodiment of the present application;

[0034] Figure 2 A schematic diagram of the split structure of the transformer provided in an embodiment of the present application;

[0035] Figure 3 A cross-sectional view of a transformer provided in an embodiment of the present application;

[0036] Figure 4 Another cross-sectional view of the transformer provided in an embodiment of the present application;

[0037] Figure 5 Another cross-sectional view of the transformer provided in an embodiment of the present application;

[0038] Figure 6 A schematic diagram of the structure of the second winding provided in an embodiment of the present application;

[0039] Figure 7 A schematic diagram of the structure of the conductive member and the insulating member provided in the embodiment of the present application;

[0040] Figure 8 A schematic diagram of a split structure of a second winding provided in an embodiment of the present application;

[0041] Fig. 9 A schematic diagram of the structure of a second winding and a packaging component provided in an embodiment of the present application;

[0042] Fig.10 A schematic diagram of the structure of a winding skeleton provided in an embodiment of the present application.

[0043] Description of reference numerals:

[0044] 10: first circuit; 11: switch element;

[0045] 12: resonant inductor; 20: second circuit;

[0046] 21: Rectification element; 22: Filter element;

[0047] 100: transformer; 110: first winding;

[0048] 120a: second winding assembly; 120: second winding;

[0049] 121: conductive member; 122: conductive body;

[0050] 123: pin; 1231: first pin;

[0051] 1231a: first pin group; 1232: second pin group;

[0052] 1232a: second pin group; 131: insulating member;

[0053] 132: packaging; 140: winding column;

[0054] 141: first sub-winding column; 142: second sub-winding column;

[0055] 150: side post; 151: first sub-side post;

[0056] 152: second sub-side column; 160: winding frame;

[0057] 161: winding groove; 162: receiving hole;

[0058] 163: interval; 164: groove. DETAILED DESCRIPTION

[0059] In the related art, a power supply device may include a primary winding, a transformer and a secondary circuit. The transformer may include a primary winding, a secondary winding and a magnetic core. The primary winding and the secondary winding are both arranged around the outer periphery of the winding column of at least part of the magnetic core. The primary winding is electrically connected to the primary circuit, and the secondary winding is electrically connected to the secondary circuit. Among them, the secondary winding may include a plurality of copper sheets, and the plurality of copper sheets are stacked in the thickness direction. Each copper sheet is provided with a pin, and the pin can be electrically connected to the secondary circuit. Two adjacent copper sheets include a first copper sheet and a second copper sheet. The outer side of the first copper sheet is wrapped with a first insulating layer, and the first copper sheet and the first insulating layer together form a first composite structure. The outer side of the second copper sheet is wrapped with a second insulating layer, and the second copper sheet and the second insulating layer together form a second composite structure.

[0060] However, during the assembly process of the transformer, since the first composite structure and the second composite structure are two independent structures, the first composite structure and the second composite structure cannot fit well together, and an uncertain spacing is likely to exist between the first composite structure and the second composite structure, so that the two adjacent copper sheets cannot fit well together, and there is a large variable spacing between the two adjacent copper sheets. In addition, the first composite structure and the second composite structure are prone to misalignment, which makes it easy for the two adjacent copper sheets to be misaligned, thereby reducing the facing area between the two adjacent copper sheets, resulting in poor coupling between the two adjacent copper sheets, thereby reducing the energy transmission between the two adjacent copper sheets, resulting in higher losses in the secondary winding, and thus higher losses in the transformer and electronic equipment.

[0061] Based on at least one of the above technical problems, an embodiment of the present application provides a transformer, which may include at least one first winding, at least one second winding and a magnetic core. Each first winding and each second winding are wound on the magnetic core along the axial direction of the magnetic core. In the same second winding, the second winding may include a plurality of conductive parts, an insulating part may be provided between each two adjacent conductive parts, and the plurality of conductive parts and the insulating part are an integral structure. In this way, since the plurality of conductive parts of the same second winding and the insulating part located between the plurality of conductive parts are provided as an integral structure, the plurality of conductive parts and the insulating part can be assembled to form an integral structure, so that the positional relationship between the plurality of conductive parts and the insulating part is fixed, so that the adjacent two conductive parts can always be in a good fit state, so that the spacing between the adjacent two conductive parts is always small, and in addition, the adjacent two conductive parts will not be misaligned due to the fixed position, so that the area facing the adjacent two conductive parts can always be large, so that the coupling effect between the adjacent two conductive parts can be improved, and the energy transmission between the adjacent two conductive parts can be improved, so as to reduce the loss of the second winding, so as to reduce the loss of the transformer and the electronic device.

[0062] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0063] The present application embodiment provides an electronic device, which may include a power supply device or other electronic devices. Figure 1 The electronic device may include a transformer 100 (eg, an LLC transformer), a first circuit 10 , and a second circuit 20 . The first winding 110 of the transformer 100 may be electrically connected to the first circuit 10 , and the second winding 120 of the transformer 100 may be electrically connected to the second circuit 20 .

[0064] In some embodiments, one of the first winding 110 and the second winding 120 may be a primary winding, and the other of the first winding 110 and the second winding 120 may be a secondary winding.

[0065] The embodiment of the present application is described by taking the first winding 110 as the primary winding and the second winding 120 as the secondary winding as an example. In this case, the first circuit 10 can be the primary circuit and the second circuit 20 can be the secondary circuit.

[0066] In some embodiments, the first circuit 10 may be electrically connected to the input terminal. The input terminal may be electrically connected to the first winding 110 through the first circuit 10. For example, the input terminal may be used to input alternating current. When the alternating current input from the input terminal passes through the first winding 110, an alternating magnetic field is generated. The alternating magnetic field is transmitted through the magnetic core (the magnetic core may include Figure 3 The second circuit 20 is electrically connected to the load. The second circuit 20 can process the current of the second winding 120 (for example, rectifying and filtering) to generate a desired output voltage, and the second circuit 20 transmits the output voltage to the load.

[0067] In some embodiments, see Figure 1 The first circuit 10 may include a switch element 11, a capacitor, a resonant inductor 12, and the like.

[0068] In some embodiments, see Figure 1 , the second circuit 20 may include a rectifying element 21 and a filtering element 22, etc. For example, the rectifying element 21 may include a metal-oxide-semiconductor field-effect transistor (Metal-Oxide-SemiconductorField-Effect Transistor, referred to as MOSFET), a bipolar junction transistor (bipolar junction transistor, BJT), an insulated gate bipolar transistor (insulated gate bipolar transistor, IGBT), a gallium nitride (GaN) field effect transistor or a silicon carbide (SiC) power tube, etc. For example, the filtering element 22 may include a filtering capacitor. For example, the second circuit 20 may be arranged on a circuit board or other structural parts.

[0069] The following will be combined Figure 1-Figure 10 The transformer 100 provided in the embodiment of the present application is described.

[0070] The present application embodiment provides a transformer 100, which can be applied to the electronic device in the above embodiment. Figure 2 and Figure 3 The transformer 100 may include at least one first winding 110 , at least one second winding 120 and a magnetic core, the magnetic core may include a winding post 140 , and each first winding 110 and each second winding 120 may be wound on the winding post 140 along the axial direction of the winding post 140 .

[0071] In some embodiments, a first winding 110 and a second winding 120 may be alternately arranged along the axial direction of the winding rod 140 to reduce winding losses caused by the cutting of magnetic lines of force generated by harmonics and the first winding 110 .

[0072] For example, the number of the first windings 110 may be 1, 2, or 3 or more. The number of the second windings 120 may be 1, 2, or 3 or more. The embodiment of the present application does not limit the number of the first windings 110 and the second windings 120.

[0073] The axial direction of the winding column 140 is Figure 2 In the direction A, the axial direction of the winding column 140 can also be the axial direction of the conductive member 121, the axial direction of the winding frame 160, the axial direction of the magnetic core, etc.

[0074] In some embodiments, see Figure 2 and Figure 3 The number of the first winding 110 can be one, and the number of the second winding 120 can be two. The first winding 110 and the two second windings 120 are both wound on the winding post 140 along the axis direction of the winding post 140, and the two second windings 120 are respectively located on both sides of the first winding 110 along the axis direction of the winding post 140.

[0075] In some embodiments, see Figure 4 The number of the first windings 110 may be two, and the number of the second windings 120 may be one. The two first windings 110 and the one second winding 120 may be wound on the winding post 140 along the axis direction of the winding post 140, and the two first windings 110 may be located on both sides of the second winding 120 along the axis direction of the winding post 140, respectively.

[0076] In some embodiments, see Figure 5 The number of the first winding 110 can be one, the number of the second winding 120 can be one, and both the first winding 110 and the second winding 120 can be wound on the winding post 140 along the axis direction of the winding post 140. The first winding 110 and the second winding 120 can be located on both sides of the axis direction of the winding post 140, respectively.

[0077] In some embodiments, the manufacturing process of the first winding 110 may include a winding with a winding frame or a bobbin or an air-core coil. The embodiment of the present application does not limit the manufacturing process of the first winding 110.

[0078] The following describes the same secondary winding (taking the second winding 120 as an example) provided in an embodiment of the present application.

[0079] See also Figure 6In the same second winding 120, the second winding 120 may include at least one conductive member 121. The embodiment of the present application is described by taking a plurality of conductive members 121 as an example. The number of conductive members 121 in the same second winding 120 may be 2, 3, 4 or any number greater than 4. The plurality of conductive members 121 may be arranged along the axial direction of the winding post 140, and each conductive member 121 is wound around at least a portion of the outer periphery of the winding post 140.

[0080] In some embodiments, see Figure 6 and Figure 7 An insulating member 131 may be disposed between each two adjacent conductive members 121, and the insulating member 131 may electrically isolate each two adjacent conductive members 121. The plurality of conductive members 121 and the insulating member 131 between each two adjacent conductive members 121 may be an integral structure. In this arrangement, since the plurality of conductive members 121 of the same second winding 120 and the insulating member 131 located between the plurality of conductive members 121 are assembled to form an integral structure, the positional relationship between the plurality of conductive members 121 and the insulating member 131 is fixed, the interlayer flatness can be high, the second winding 120 and the transformer 100 have high structural stability, and in addition, the two adjacent conductive members 121 can always be in a good fit state, so that the spacing between the two adjacent conductive members 121 is always small, and secondly, the two adjacent conductive members 121 will not be misaligned due to the fixed position, so that the facing area between the two adjacent conductive members 121 is always large, thereby improving the coupling effect between the two adjacent conductive members 121, thereby improving the energy transmission between the two adjacent conductive members 121, reducing the loss of the second winding 120, and thus reducing the loss of the transformer 100 and the electronic device. Since the fit between the two adjacent conductive members 121 is high, the total thickness of the second winding 120 is low, so that the total volume of the second winding 120 can be reduced. Since the position of the conductive member 121 in the second winding 120 is fixed, the conductive member 121 can be prevented from moving and scratching the insulating member 131, thereby ensuring the safety of the transformer 100. During the assembly process of the second winding 120 and the winding frame 160, since the multiple conductive members 121 and the insulating member 131 of the same second winding 120 are an integrated structure, the multiple conductive members 121 do not need to be assembled in batches, and the multiple conductive members 121 and the insulating member 131 can be assembled on the winding frame 160 at one time, which can reduce the number of components of the transformer 100 and simplify the assembly process of the transformer 100.

[0081] In some embodiments, see Figure 8In the same second winding 120, each conductive member 121 may include a conductive body 122 and two pins 123. The conductive body 122 may be wound around at least a portion of the outer periphery of the winding post 140, and the two pins 123 may be located at both ends of the extension direction of the conductive body 122. An insulating member 131 may be provided between each two adjacent conductive bodies 122 ( Figure 7 ), the plurality of conductive bodies 122 and the insulating member 131 located between the plurality of conductive bodies 122 may be an integral structure, thereby facilitating the reduction of the loss of the second winding 120, thereby reducing the loss of the transformer 100 and the electronic device. The principle has been described and will not be repeated here.

[0082] In some embodiments, see Figure 8 , the two pins 123 of the same conductive member 121 may include a first pin 1231 and a second pin 1232. The vertical projections of the two pins 123 of a part of the conductive member 121 on the plane where the conductive member 121 is located overlap. Equivalently, the two pins 123 of at least two conductive members 121 can be arranged along the axial direction of the winding post 140, and the first pins 1231 of the at least two conductive members 121 are arranged along the axial direction of the winding post 140 to form a first pin group 1231a. The second pins 1232 of the at least two conductive members 121 are arranged along the axial direction of the winding post 140 to form a second pin group 1232a. In the first pin group 1231a, the vertical projections of each first pin 1231 on a preset plane can overlap. In the second pin group 1232a, the vertical projections of each second pin 1232 on a preset plane can overlap. Wherein, the preset plane can be parallel to the conductive member 121.

[0083] In some embodiments, see Figure 8 In the same first pin group 1231a, an insulating member 131 may be provided between two adjacent first pins 1231 along the axial direction of the conductive member 121 (ie, direction A). Figure 7 ), the plurality of first pins 1231 and the insulating member 131 disposed between the plurality of first pins 1231 may be an integral structure, so that the plurality of first pin groups 1231a and the insulating member 131 are assembled to form an integral structure, thereby the positional relationship between the plurality of first pins 1231 and the insulating member 131 may be fixed, which is beneficial to reducing the loss of the second winding 120, thereby reducing the loss of the transformer 100 and the electronic device. The principle has been explained and will not be repeated.

[0084] In some embodiments, see Figure 8 In the same second pin group 1232a, an insulating member 131 may be provided between two adjacent second pins 1232 along the axial direction of the conductive member 121 ( Figure 7), the plurality of second pins 1232 and the insulating member 131 disposed between the plurality of second pins 1232 may be an integral structure, so that the plurality of second pin groups 1232a and the insulating member 131 are assembled to form an integral structure, thereby the positional relationship between the plurality of second pins 1232 and the insulating member 131 may be fixed, which is beneficial to reducing the loss of the second winding 120, thereby reducing the loss of the transformer 100 and the electronic device. The principle has been explained and will not be repeated.

[0085] In two adjacent conductive members 121 , the insulating member 131 between two adjacent conductive bodies 122 and the insulating member 131 between two adjacent pins 123 may be the same insulating member 131 , or may be different insulating members 131 .

[0086] In some embodiments, see Figure 8 In the same second winding 120, the number of the first pin group 1231a can be at least one. When the number of the first pin group 1231a is multiple, the multiple first pin groups 1231a can be arranged along the axial direction of the winding post 140. In the same second winding 120, the number of the second pin group 1232a can be at least one. When the number of the second pin group 1232a is multiple, the multiple second pin groups 1232a can be arranged along the axial direction of the winding post 140. For example, see Figure 8 , the number of the first pin groups 1231a may be two, and the number of the second pin groups 1232a may be two.

[0087] In some embodiments, see Figure 8 , the two pins 123 of each conductive member 121 can be used to realize the series connection or parallel connection between different conductive members 121. In other words, any two conductive members 121 can be electrically connected through the pins 123, and any two conductive members 121 can be connected in series or in parallel. Among any two conductive members 121, at least one of the two pins 123 of one conductive member 121 can be directly connected, connected by punching, or connected by wire.

[0088] In some embodiments, any two conductive members 121 may include a first conductive member and a second conductive member, one of the two pins 123 of the first conductive member and one of the two pins 123 of the second conductive member may be electrically connected, and the other of the two pins 123 of the first conductive member and the other of the two pins 123 of the second conductive member may be electrically connected, thereby achieving parallel connection between the first conductive member 121 and the second conductive member 121.

[0089] In some embodiments, any two conductive members 121 may include a first conductive member and a second conductive member, one of the two pins 123 of the first conductive member and one of the two pins 123 of the second conductive member may be electrically connected, and the other of the two pins 123 of the first conductive member and the other of the two pins 123 of the second conductive member may not be connected, thereby achieving series connection between the first conductive member 121 and the second conductive member 121.

[0090] In the same second winding 120, the more conductive elements 121 are connected in parallel, the greater the current output by the second winding 120 can be, and the more conductive elements 121 are connected in series, the greater the voltage output by the second winding 120 can be. For example, while keeping the same number of conductive elements 121 in the second winding 120, the output of different currents and different voltage levels (for example, 12V, 24V, 36V, 48V, etc.) can be achieved through series and parallel connection (including center tap connection) between multiple conductive elements 121.

[0091] In an embodiment where there are multiple second windings 120 and the second circuit 20 is arranged on a circuit board, the number of conductive members 121 in each second winding 120 can be the same, the thickness of each second winding 120 can be consistent, and each second winding 120 can output a different voltage respectively, so that the docking of the multiple second windings 120 with the circuit board is consistent, which facilitates the electrical connection of the multiple second windings 120 with the same circuit board on which the second circuit 20 is arranged.

[0092] In some embodiments, the vertical projections of the first pins 1231 of at least two conductive members 121 on the preset plane do not overlap. Or, the vertical projections of the second pins 1232 of at least two conductive members 121 on the preset plane do not overlap. Or, the vertical projections of the first pins 1231 of at least two conductive members 121 on the preset plane do not overlap, and the vertical projections of the second pins 1232 of the at least two conductive members 121 on the preset plane do not overlap.

[0093] For example, the thickness and cross-sectional area of ​​the conductive member 121 can be adjusted according to the current carrying capacity. The thickness of the conductive member 121 can range from 0.1Oz (Oz means ounce, the same below will not be repeated) to 5Oz. For example, the thickness of the conductive member 121 can be 1Oz, 2Oz, 2.5Oz, 3Oz or other values. Among them, 1Oz is about 35um.

[0094] In some embodiments, see Figure 7, the insulating member 131 may be viscous, and in the same second winding 120, two adjacent conductive members 121 may be bonded together by the insulating member 131, so that a plurality of conductive members 121 and the insulating member 131 located between the plurality of conductive members 121 may form an integral structure, thereby reducing the loss of the second winding 120, and reducing the loss of the transformer 100 and the electronic device. In addition, the bonding connection is relatively simple to implement, thereby reducing the cost and difficulty of manufacturing the transformer 100.

[0095] In an embodiment where the insulating member 131 is sticky and the conductive member 121 includes a conductive body 122, in the same second winding 120, two adjacent conductive bodies 122 can be bonded together by the insulating member 131, so that a plurality of conductive bodies 122 and the insulating member 131 located between the plurality of conductive bodies 122 can form an integral structure, thereby reducing the loss of the second winding 120 and reducing the loss of the transformer 100 and the electronic device.

[0096] In an embodiment where the insulating member 131 is sticky and a first pin group 1231a is provided, in the same first pin group 1231a, two adjacent first pins 1231 along the axial direction of the conductive member 121 can be bonded together by the insulating member 131, so that the multiple first pins 1231 and the insulating member 131 located between the multiple first pins 1231 can be an integrated structure, which is beneficial to reducing the loss of the second winding 120, thereby reducing the loss of the transformer 100 and the electronic device.

[0097] In an embodiment where the insulating member 131 is sticky and a second pin group 1232a is provided, in the same second pin group 1232a, two adjacent second pins 1232 along the axial direction of the conductive member 121 can be bonded together by the insulating member 131, so that the multiple second pins 1232 and the insulating member 131 provided between the multiple second pins 1232 can be an integrated structure, which is beneficial to reducing the loss of the second winding 120, thereby reducing the loss of the transformer 100 and the electronic device.

[0098] In some embodiments, see Figure 6 and Fig. 9 In the same second winding 120, the outer side of the second winding 120 may be provided with a packaging member 132. For example, the plurality of conductive bodies 122 of the same second winding 120 and the insulating member 131 ( Figure 7) is sleeved on the outside thereof, and the multiple conductive bodies 122 and the insulating member 131 are connected into an integral structure through the packaging member 132, so that the multiple conductive members 121 of the same second winding 120 and the insulating member 131 located between the multiple conductive members 121 are connected into an integral structure, which is beneficial to reducing the loss of the second winding 120, thereby reducing the loss of the transformer 100 and the electronic device. In addition, the packaging member 132 can protect the conductive body 122 and the insulating member 131 located in the packaging member 132. At this time, the insulating member 131 can be sticky or non-sticky. Among them, the multiple conductive members 121 of the same second winding 120, the insulating member 131 corresponding to the multiple conductive members 121, and the packaging member 132 can jointly form a second winding assembly 120a.

[0099] For example, at least a portion of the pins 123 of the conductive member 121 may be exposed outside the package 132 to achieve electrical connection with the second circuit 20 .

[0100] For example, the material of the package 132 may be an insulating material.

[0101] For example, the material of the conductive member 121 may include metal materials such as copper, silver, nickel, tungsten, and tin.

[0102] In some embodiments, the manufacturing process of the conductive member 121 of the second winding 120 may include printed circuit board (PCB) wiring, copper wire pressing or copper bar pressing. The above manufacturing process is relatively mature, the process is relatively simple, and the prepared conductive member 121 has a high flatness, which is conducive to better fitting between two adjacent conductive members 121 and reducing the spacing tolerance between two adjacent conductive members 121. In the embodiment where the conductive member 121 of the second winding 120 is wired using a printed circuit board (PCB), multiple conductive members 121 of the same second winding 120 and the corresponding insulating members 131 can form a circuit board together.

[0103] The winding skeleton 160 provided in the embodiment of the present application is described below.

[0104] In some embodiments, see Figure 5 and Fig.10 The transformer 100 may further include a winding skeleton 160 located at the periphery of the winding post 140. Along the axial direction of the winding skeleton 160, the first winding 110 and the second winding 120 are both wound around the periphery of the winding skeleton 160. The first winding 110 and the second winding 120 can be wound around the periphery of the winding post 140 through the winding skeleton 160.

[0105] In some embodiments, see Figure 5 and Fig.10The winding frame 160 may be provided with winding grooves 161, and the winding grooves 161 may be arranged around the outer circumference of the winding frame 160. The number of the winding grooves 161 may be the same as the number of the primary windings (taking the first winding 110 as an example), that is, the number of the winding grooves 161 may be the same as the number of the first windings 110, and one first winding 110 may be wound in one winding groove 161.

[0106] In some embodiments, see Fig.10 The winding frame 160 may also be provided with a latching structure for fixing the second winding 120 on the winding frame 160, thereby providing convenience and accuracy in fixing the second winding 120. The latching structure may be in the form of a groove 164, a buckle, etc., and the present application does not limit the latching structure. As long as the structure can fix the second winding 120 on the winding frame 160, it is considered to be within the scope of protection of the present application.

[0107] See also Figure 3 In an embodiment where there is one first winding 110 and two second windings 120, the two second windings 120 may be located on both sides of the winding slot 161, respectively. The winding slot 161 may be located in the middle section of the winding frame 160, and the two second windings 120 may be located on the winding frame 160 on both sides of the winding slot 161, respectively. For example, a gap 163 may be provided between the winding slot 161 and the two second windings 120, and the gap 163 may be used to store leakage inductance energy to form a resonant inductor 12, thereby simplifying the first circuit 10 and reducing the preparation cost of the transformer 100. Therefore, the magnetic element in the LLC resonant cavity, namely the resonant inductor and the transformer, may be integrated.

[0108] See also Figure 4 In an embodiment where there are two first windings 110 and one second winding 120, two winding slots 161 may be provided on the winding frame 160, and the two first windings 110 may be wound in the two winding slots 161 respectively, and the second winding 120 may be provided on the winding frame 160 between the two winding slots 161. For example, a gap 163 may be provided between the two winding slots 161 and the second winding 120, and the gap 163 may be used to store leakage inductance energy to form a resonant inductor 12, thereby simplifying the first circuit 10 and reducing the preparation cost of the transformer 100.

[0109] See also Figure 5In an embodiment where there is one first winding 110 and one second winding 120, the first winding 110 may be wound in a winding groove 161, and the second winding 120 may be located on one side of the winding groove 161. For example, the winding groove 161 and the second winding 120 may be located on both sides of the winding frame 160, respectively. For example, a gap 163 may be provided between the winding groove 161 and the second winding 120, and the gap 163 may be used to store leakage inductance energy to form a resonant inductor 12, thereby simplifying the first circuit 10 and reducing the preparation cost of the transformer 100.

[0110] The side column 150 of the magnetic core provided in the embodiment of the present application is described below.

[0111] In some embodiments, see Figure 2 and Figure 3 The magnetic core may include a side column 150, the side column 150 may be connected to the winding column 140, and the side column 150 may be located outside the first winding 110, the second winding 120, and part of the winding frame 160. The side column 150 may include a first sub-side column 151 and a second sub-side column 152 arranged along the axial direction of the winding column 140, and the winding column 140 may include a first sub-winding column 141 and a second sub-winding column 142 arranged along the axial direction of the winding column 140, the first sub-winding column 141 and the first sub-side column 151 may be connected, and the second sub-winding column 142 and the second sub-side column 152 may be connected. The winding frame 160 may have a receiving hole 162, the first sub-winding column 141 may be inserted into one end of the receiving hole 162, and the second sub-winding column 142 may be inserted into the other end of the receiving hole 162. For example, the first sub-winding column 141 and the first sub-side column 151 can form an "E" shape together, and the second sub-winding column 142 and the second sub-side column 152 can form an "E" shape together.

[0112] It should be noted here that the numerical values ​​and numerical ranges involved in the embodiments of the present application are approximate values. Due to the influence of the manufacturing process, there may be a certain range of errors, which can be considered negligible by those skilled in the art.

[0113] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A transformer, characterized in that: include: a first winding, two second windings and a magnetic core; The first winding and the two second windings are both wound on the magnetic core along the axial direction of the magnetic core, and the two second windings are respectively located on both sides of the first winding; The two second windings each include a plurality of conductive members; In the same second winding, an insulating member is provided between every two adjacent conductive members, and the plurality of conductive members and the insulating member are an integral structure.

2. The transformer according to claim 1, characterized in that: In the same second winding, each of the conductive parts includes two pins, and the vertical projections of the two pins of a part of the conductive parts on the plane where the conductive parts are located overlap, and the insulating part is provided between two adjacent pins along the axial direction of the conductive part, and the multiple pins and the insulating part along the axial direction of the conductive part form an integrated structure.

3. The transformer according to claim 2, characterized in that: The two pins of each conductive element are used to realize series connection or parallel connection between different conductive elements.

4. The transformer according to claim 1, characterized in that: The insulating member is adhesive, and in the same second winding, two adjacent conductive members are bonded and connected via the insulating member.

5. The transformer according to claim 1, characterized in that: A packaging member is sleeved on the outer side of the second winding.

6. The transformer according to claim 1, characterized in that: The manufacturing process of the second winding includes printed circuit board wiring or copper wire pressing.

7. The transformer according to claim 1, characterized in that: The transformer also includes a winding frame located at the outer periphery of the winding column of the magnetic core. A winding groove is provided on the winding frame along the axial direction of the winding frame. The first winding is wound in the winding groove, and the two second windings are respectively located on the winding frame on both sides of the winding groove.

8. The transformer according to claim 7, characterized in that: A gap is provided between the winding groove and the two second windings.

9. The transformer according to claim 1, characterized in that: The manufacturing process of the first winding includes a winding with a winding frame or a bobbin or an air-core coil.

10. A transformer, characterized in that: include: two first windings, a second winding and a magnetic core; The two first windings and the second winding are both wound on the magnetic core along the axial direction of the magnetic core, and the two first windings are respectively located on both sides of the second winding; The second winding includes a plurality of conductive members, an insulating member is provided between every two adjacent conductive members, and the plurality of conductive members and the insulating member are an integral structure.

11. The transformer according to claim 10, characterized in that: In the second winding, each of the conductive parts includes two pins, and the vertical projections of the two pins of a part of the conductive parts on the plane where the conductive part is located overlap, and the insulating part is provided between two adjacent pins along the axial direction of the conductive part, and the multiple pins and the insulating part along the axial direction of the conductive part form an integrated structure.

12. The transformer according to claim 11, characterized in that The two pins of each conductive element are used to realize series connection or parallel connection between different conductive elements.

13. The transformer according to claim 10, characterized in that: The transformer also includes a winding skeleton located at the outer periphery of the winding column of the magnetic core. Along the axial direction of the winding skeleton, two winding grooves are provided on the winding skeleton. The two first windings are respectively wound in the two winding grooves, and the second winding is arranged on the winding skeleton between the two winding grooves.

14. The transformer according to claim 13, characterized in that: A gap is provided between the two winding slots and the second winding.

15. The transformer according to claim 10, characterized in that: The manufacturing process of the first winding includes a winding with a winding frame or a bobbin or an air-core coil.

16. A transformer, characterized in that: include: a first winding, a second winding and a magnetic core; The first winding and the second winding are both wound on the magnetic core along the axial direction of the magnetic core; One of the first winding or the second winding includes a plurality of conductive members, and an insulating member is provided between every two adjacent conductive members, and the plurality of conductive members and the insulating member are an integral structure.

17. The transformer according to claim 16, characterized in that Each of the conductive parts includes two pins, and the vertical projections of the two pins of a part of the conductive parts on the plane where the conductive parts are located overlap, and the insulating part is provided between two adjacent pins along the axial direction of the conductive part, and the multiple pins and the insulating part along the axial direction of the conductive part are an integrated structure.

18. The transformer according to claim 17, characterized in that The two pins of each conductive element are used to realize series connection or parallel connection between different conductive elements.

19. The transformer according to claim 16, characterized in that The transformer also includes a winding skeleton located on the outer periphery of the winding column of the magnetic core. A winding groove is provided on the winding skeleton along the axial direction of the winding skeleton. One of the first winding and the second winding is wound in the winding groove, and the other winding is located on the winding skeleton on one side of the winding groove.

20. The transformer according to claim 19, characterized in that A gap is provided between the winding groove and the other winding.

21. The transformer according to claim 16, characterized in that The manufacturing process of the first winding includes a winding with a winding frame or a bobbin or an air-core coil.

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