Magnetic device and transformer

Abstract

The invention relates to the field of electrical elements, and provides magnetic equipment and a transformer. The magnetic equipment comprises a magnetic core (1), wherein the magnetic core (1) comprises a middle column (9) and side columns (10); the first coil (2) is wound on the magnetic core (1); the second coil (3) is wound on the magnetic core (1), and the second coil (3) and the first coil (2) are arranged at an interval; the magnetic sheet (4) is arranged in the first coil (2) and / or the second coil (3); the gasket (5) is arranged between the magnetic sheet (4) and the magnetic core (1); and the heat conduction pieces (6) are arranged between the two adjacent magnetic cores (1). The magnetic equipment and the transformer at least can overcome the defects that traditional magnetic equipment and transformers are large in size and poor in ventilation and heat dissipation.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical components, and in particular to a magnetic device and a transformer comprising the magnetic device. Background Art

[0002] As electrical equipment has higher requirements for the performance of electrical components, electrical components are moving towards integration and miniaturization. Magnetic devices are the core devices of some electrical equipment (such as transformers, vehicle-mounted equipment, etc.). Magnetic devices are used to transmit electrical energy between different circuits and change the voltage at the same time.

[0003] Traditional magnetic equipment has independent transformer and resonance parts, is large in size, has poor ventilation and heat dissipation performance, and has a complex production process. Summary of the invention

[0004] The present invention aims to solve at least one of the defects in the related art. To this end, the present invention proposes a magnetic device that can integrate an independent transformer and a resonant inductor, reduce the volume of the magnetic device, and have good ventilation and heat dissipation effects.

[0005] The invention also provides a transformer.

[0006] According to the magnetic device of the first aspect of the embodiment of the present invention, the magnetic device includes a magnetic core, the magnetic core includes a middle column and a side column; a first coil, the first coil is wound around the magnetic core; a second coil is wound around the magnetic core, the second coil is spaced apart from the first coil; a magnetic sheet is arranged in the first coil and / or the second coil; a gasket is arranged between the magnetic sheet and the magnetic core; and a heat conductor is arranged between two adjacent magnetic cores.

[0007] According to an embodiment of the present invention, the center column is provided with a quarter-circular groove, and the surfaces of the four magnetic cores provided with the quarter-circular grooves are attached to each other to form a first structure, and the four quarter-circular grooves form a first hole.

[0008] According to an embodiment of the present invention, a first slot or a second slot is formed between two adjacent magnetic cores in the first structure, wherein the first slots in the first structure are arranged opposite to the first slots, and the second slots are arranged opposite to the second slots.

[0009] According to one embodiment of the present invention, the number of magnetic cores is eight, and four magnetic cores form a first structure; the side column includes a first surface and a second surface that are oppositely arranged, and the first surface of the side column in one first structure is in contact with the first surface of the side column in another first structure.

[0010] According to one embodiment of the present invention, the magnetic device includes two first coils and one second coil, and the two first coils are arranged on both sides of one second coil.

[0011] According to one embodiment of the present invention, the magnetic device further comprises: a spacer, wherein the spacer is arranged between the first coil and the second coil.

[0012] According to an embodiment of the present invention, the magnetic device further includes: a base connected to the magnetic core.

[0013] According to an embodiment of the present invention, the heat conducting member is disposed between the middle columns of two adjacent magnetic cores.

[0014] According to an embodiment of the present invention, the heat conducting member is provided with a second hole.

[0015] According to the transformer of the second aspect of the present invention, the transformer comprises the above-mentioned magnetic device.

[0016] The above one or more technical solutions in the embodiments of the present invention have at least the following technical effects: The magnetic device and transformer provided by the embodiment of the present invention can provide sufficient winding space for the coil. The first coil and the second coil form a transformer through magnetic conversion, there is a gap between the first coil and the second coil, and the leakage inductance between the first coil and the second coil is used to form a resonant inductor, so as to realize a main-resonant integrated magnetic device integrating the main transformer and the resonant inductor, thereby reducing the volume of the device. At the same time, by setting a gasket, the heat conduction between different components in the magnetic device can be enhanced, which is convenient for heat dissipation.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 is a schematic diagram of the overall structure of a magnetic device provided by an embodiment of the present invention; Figure 2 is a structural schematic diagram of a magnetic core of a magnetic device provided by an embodiment of the present invention; Figure 3 is a schematic diagram of a first structure provided by an embodiment of the present invention; Figure 4 is an exploded schematic diagram of a heat conducting member and a magnetic core provided in an embodiment of the present invention; Figure 5 is a schematic diagram of a second structure provided by an embodiment of the present invention; Figure 6 is a combined schematic diagram of a first structure provided by an embodiment of the present invention; Figure 7 is a combined schematic diagram of a second structure provided by an embodiment of the present invention; Figure 8 It is a schematic diagram of some exploded parts of a magnetic device provided by an embodiment of the present invention; Fig. 9 is a schematic diagram of assembling a magnetic core and a base provided by an embodiment of the present invention; Fig.10 It is a structural schematic diagram of a base provided by an embodiment of the present invention.

[0020] Reference numerals: 1: magnetic core; 2: first coil; 3: second coil; 4: magnetic sheet; 5: gasket; 6: heat conductor; 7: spacer; 8: base; 9: middle column; 10: side column; 11: quarter-circular groove; 21: first hole; 22: second hole; 30: first structure; 40: second structure; 51: first groove; 52: second groove; 81: slot structure; 82: reinforcing rib; 83: isolation strip; 84: latch. DETAILED DESCRIPTION

[0021] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0022] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limitations on the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0023] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0024] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0025] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0026] Combine the following Figure 1-Figure 10 The magnetic device and transformer provided by the embodiments of the present invention are described in detail.

[0027] like Figure 1-Figure 8 As shown, the magnetic device provided by the present invention includes: a magnetic core 1, the magnetic core 1 includes a middle column 9 and a side column 10; a first coil 2, the first coil 2 is wound on the magnetic core 1; a second coil 3, the second coil 3 is wound on the magnetic core 1, and the second coil 3 is spaced apart from the first coil 2; a magnetic sheet 4, the magnetic sheet 4 is arranged in the first coil 2 and / or the second coil 3; a gasket 5, the gasket 5 is arranged between the magnetic sheet 4 and the magnetic core 1.

[0028] In some embodiments, the number of the magnetic core 1, the first winding package 2, the second winding package 3, the magnetic sheet 4 and the gasket 5 can be one or more, which is not specifically limited in the present invention. The first winding package 2 and the second winding package 3 are respectively wound around the middle column 9 of the magnetic core 1. A magnetic sheet 4 is arranged in the internal cavity of the first winding package 2 and the second winding package 3. A gasket 5 is arranged between the magnetic sheet 4 and the middle column 9 of the magnetic core 1. When the magnetic device has multiple magnetic sheets 4, gaskets 5 are arranged between the magnetic sheets 4. The shapes of the first winding package 2, the second winding package 3, the magnetic sheet 4 and the gasket 5 can be circular, elliptical, rectangular, etc., which is not specifically limited in the present invention. The shapes of the first winding package 2 and the second winding package 3 can be the same or different. When there are multiple magnetic sheets 4, the shapes of the multiple magnetic sheets 4 can be the same or different. When there are multiple gaskets 5, the shapes of the multiple gaskets 5 can be the same or different.

[0029] In some embodiments, in order to facilitate assembly and fixation and improve the magnetic flux effect, the shapes of the magnetic sheet 4 and the gasket 5 are adapted to the shapes of the first coil 2 and the second coil 3. For example, when the first coil 2 and the second coil 3 are in annular shape, it is preferred to set the magnetic sheet 4 and the gasket 5 in annular shape.

[0030] In some embodiments, the material of the magnetic core 1 can be ferrite material, iron-based nanocrystalline alloy, silicon steel, Permalloy, amorphous alloy, nickel-iron magnetic core material, etc., and the present invention preferably uses ferrite material. The material of the gasket 5 can be graphite, carbon fiber, ceramic, silica gel, etc., and the present invention preferably uses a ceramic gasket to further improve the insulation and thermal conductivity. The material of the magnetic sheet 4 can refer to the material of the above-mentioned magnetic core 1, that is, the material of the magnetic sheet 4 can also be ferrite material, iron-based nanocrystalline alloy, silicon steel, Permalloy, amorphous alloy, nickel-iron magnetic core material, etc.

[0031] In some embodiments, a gap is provided between the middle column 9 and the side column 10 of the magnetic core 1, so that the first coil 2 and the second coil 3 are wound around the middle column 9. The gap can also form an air gap to facilitate controlling the inductance of the magnetic device.

[0032] The magnetic device provided by the embodiment of the present invention is provided with a magnetic core 1, which includes a middle column 9 and a side column 10; a first coil 2, which is wound on the magnetic core 1; a second coil 3, which is wound on the magnetic core 1, and the second coil 3 is spaced apart from the first coil 2; a magnetic sheet 4, which is arranged in the first coil 2 and / or the second coil 3; a gasket 5, which is arranged between the magnetic sheet 4 and the magnetic core 1, to provide sufficient winding space for the coil. The first coil 2 and the second coil 3 form a transformer through magnetic conversion, and there is a gap between the first coil 2 and the second coil 3, and the leakage inductance between the first coil 2 and the second coil 3 is used to form a resonant inductor, so as to realize a main-resonant integrated magnetic device integrating a main transformer and a resonant inductor, thereby reducing the volume of the device. At the same time, by providing a gasket 5, the heat conduction between different components in the magnetic device can be enhanced, which is convenient for heat dissipation.

[0033] In one embodiment of the present invention, Figure 1 , Figure 3 and Figure 6 As shown, the magnetic device may include eight magnetic cores 1. When the magnetic device includes eight magnetic cores 1, the central column 9 of the magnetic core 1 is provided with a quarter-circular groove 11, wherein the surfaces of four magnetic cores 1 provided with the quarter-circular groove 11 are attached to each other to form a first structure 30, and the four quarter-circular grooves 11 form a first hole 21; the surfaces of the other four magnetic cores 1 provided with the quarter-circular groove 11 are attached to each other to form another first structure 30.

[0034] In some embodiments, when the magnetic device includes eight magnetic cores 1, four magnetic cores 1 can be combined with each other to form a first structure 30. In the first structure 30, the quarter-circular grooves provided in the middle columns 9 of the four magnetic cores 1 form the first holes 21. The first hole 21 is a through hole, that is, the first hole 21 passes through the middle column 9 of the magnetic core 1. The present invention does not limit the shape of the first hole 21. For example, the shape of the first hole 21 can be a regular shape such as a circle, an ellipse, a rectangle, a triangle, or other irregular shapes, as long as the first hole 21 can form an air channel to facilitate airflow.

[0035] The magnetic device provided by the embodiment of the present invention is provided with eight magnetic cores 1, the central column 9 of the magnetic core 1 is provided with a quarter-circular groove 11, the surfaces of the four magnetic cores 1 provided with the quarter-circular groove 11 are attached to each other to form a first structure 30, and the four quarter-circular grooves 11 form a first hole 21, providing sufficient winding space for the coil. The first hole 21 forms an air circulation channel inside the magnetic core 1, which is convenient for heat exchange of the magnetic device and achieves a good ventilation and heat dissipation effect.

[0036] In one embodiment of the present invention, Figure 5 As shown, the magnetic device includes two magnetic cores 1. The difference between this embodiment and the previous embodiment is that when the magnetic device includes two magnetic cores 1, the middle column 9 of each magnetic core 1 is provided with a first hole 21, and each magnetic core 1 forms a second structure 40.

[0037] In some embodiments, when the magnetic device includes two magnetic cores 1, a single magnetic core can be used as a second structure 40. At this time, the middle column 9 of the magnetic core 1 is provided with a first hole 21. The first hole 21 is a through hole, that is, the first hole 21 passes through the middle column 9 of the magnetic core 1. The present invention does not limit the shape of the first hole 21. For example, the shape of the first hole 21 can be a regular shape such as a circle, an ellipse, a rectangle, a triangle, or other irregular shapes, as long as the first hole 21 can form an air channel to facilitate airflow.

[0038] The magnetic device provided by the embodiment of the present invention is provided with two magnetic cores 1, and the middle column 9 of each magnetic core 1 is provided with a first hole 21, and each magnetic core 1 forms a second structure 40, which provides sufficient winding space for the coil. The first hole 21 forms an air circulation channel inside the magnetic core 1, which is convenient for heat exchange of the magnetic device and achieves a good ventilation and heat dissipation effect. At the same time, the number of magnetic cores 1 is reduced, which simplifies the structure of the magnetic device and facilitates production and assembly.

[0039] In one embodiment of the present invention, Figure 4 As shown, the magnetic device further includes a heat conducting member 6 , which is disposed between two adjacent magnetic cores 1 .

[0040] In some embodiments, the heat conductive member 6 may be a heat conductive sheet, a heat conductive block, etc., and the material of the heat conductive member 6 may be copper and its alloys, graphite, carbon fiber, ceramic, silicone, etc. The heat conductive member 6 is directly attached to the magnetic core 1, and the heat conductive member 6 may also be bonded to the magnetic core 1 by glue. As long as the heat conductive member 6 can have a certain heat conductive effect and is in stable contact with the magnetic core 1, the shape of the heat conductive sheet 6 may be a regular shape or an irregular shape such as a rectangle, a circle, a triangle, etc. One or more heat conductive members 6 may be provided, and the present invention does not make specific limitations.

[0041] The magnetic device provided by the embodiment of the present invention facilitates the conduction of heat of the magnetic cores, balances the temperatures of different magnetic cores, and improves the efficiency of heat exchange and heat dissipation of the magnetic device by arranging a heat conductor 6 between two adjacent magnetic cores 1.

[0042] In one embodiment of the present invention, Figure 3 As shown, a first slot 51 or a second slot 52 is formed between two adjacent magnetic cores 1 in the first structure 30 , wherein the first slots 51 in the first structure 30 are arranged opposite to the first slots 51 , and the second slots 52 are arranged opposite to the second slots 52 .

[0043] In some embodiments, the shapes of the first slot 51 and the second slot 52 can be semicircular, elliptical, rectangular, rounded rectangular, triangular, rounded triangle, and combinations of the above shapes. The first slot 51 and the second slot 52 are slots arranged on different surfaces of the magnetic core 1. The number of the first slot 51 and the second slot 52 in the first structure 30 can be two or more, two or more first slots 51 are arranged opposite to each other, and two or more second slots 52 are also arranged opposite to each other. The number of the first slot 51 and the second slot 52 can be the same or different.

[0044] In the magnetic device provided by the embodiment of the present invention, a first slot 51 or a second slot 52 is formed between two adjacent magnetic cores 1 in the first structure 30, wherein the first slot 51 in the first structure 30 is arranged opposite to the first slot 51, and the second slot 52 is arranged opposite to the second slot 52, and the magnetic device achieves heat dissipation by exchanging heat with the air around it. In practical applications, the first slot 51 and the second slot 52 constitute ventilation slots that facilitate air flow, and combined with the first hole 21, a good passage is provided for air circulation, which can improve ventilation and heat dissipation effects.

[0045] In one embodiment of the present invention, Figure 5 As shown, the second structure 40 may also form a first slot 51 or a second slot 52 . The difference between this embodiment and the previous embodiment is that in this embodiment, the first slot 51 or the second slot 52 is formed in the second structure 40 formed by one magnetic core 1 .

[0046] In some embodiments, the shapes of the first slot 51 and the second slot 52 can be semicircular, elliptical, rectangular, rounded rectangular, triangular, rounded triangle, and combinations of the above shapes. The first slot 51 and the second slot 52 are slots arranged on different surfaces of the magnetic core 1. The number of the first slot 51 and the second slot 52 in the first structure 30 can be two or more, two or more first slots 51 are arranged opposite to each other, and two or more second slots 52 are also arranged opposite to each other. The number of the first slot 51 and the second slot 52 can be the same or different.

[0047] In the magnetic device provided by the embodiment of the present invention, a first slot 51 or a second slot 52 is formed between two adjacent magnetic cores 1 in the second structure 40, wherein the first slot 51 in the second structure 40 is arranged opposite to the first slot 51, and the second slot 52 is arranged opposite to the second slot 52, and the magnetic device achieves heat dissipation by exchanging heat with the air around it. In practical applications, the first slot 51 and the second slot 52 constitute ventilation slots that facilitate air flow, and combined with the first hole 21, a good passage is provided for air circulation, which can improve ventilation and heat dissipation effects.

[0048] In one embodiment of the present invention, Figure 6 As shown, there are eight magnetic cores 1, and four magnetic cores 1 form a first structure 30; the side column 10 includes a first surface and a second surface that are oppositely arranged, and the first surface of the side column 10 in one first structure 30 is in contact with the first surface of the side column 10 in another first structure 30.

[0049] In some embodiments, the two first structures 30 adopt a double-half pasting structure. That is, the first surfaces of the side columns 10 of the two first structures 30 are attached to each other and fixed with glue. After the two first structures 30 are attached, a certain enclosed space is formed, which provides space for setting other structures of the magnetic equipment and plays a role in protecting other structures. After the two first structures 30 are attached, the two middle columns 9 are not attached, providing space for installing other structures such as magnetic sheets 4, gaskets 5, etc. After the two first structures 30 are attached, the distance between the two middle columns 9 can be set according to actual needs, and the present invention does not make specific limitations.

[0050] The magnetic device provided by the embodiment of the present invention is provided with eight magnetic cores 1, and four magnetic cores 1 form a first structure 30; the side column 10 includes a first surface and a second surface that are arranged oppositely, and the first surface of the side column 10 in one first structure 30 is mutually attached to the first surface of the side column 10 in another first structure 30, which provides sufficient winding space for the coil, and is also convenient for setting the magnetic sheet 4 and the gasket 5 in the magnetic device, while providing certain protection for other structures in the magnetic device. Each magnetic core 1 forms a magnetic circuit, reduces the shared magnetic loss, and thus reduces the power consumption of the magnetic device.

[0051] In one embodiment of the present invention, Figure 7As shown, the side columns 10 of the two second structures 40 may also fit together. The difference between this embodiment and the previous embodiment is that in this embodiment, the two second structures 40 fit together.

[0052] In some embodiments, the two second structures 40 adopt a double-half pasting structure. That is, the first surfaces of the side columns 10 of the two second structures 4 are attached to each other and fixed with glue. After the two second structures 40 are attached, a certain enclosed space is formed, which provides space for setting other structures of the magnetic equipment and plays a role in protecting other structures. After the two second structures 40 are attached, the two middle columns 9 are not attached, providing space for installing other structures such as magnetic sheets 4, gaskets 5, etc. After the two second structures 40 are attached, the distance between the two middle columns 9 can be set according to actual needs, and the present invention does not make specific limitations.

[0053] The magnetic device provided by the embodiment of the present invention forms a second structure 40; the side column 10 includes a first surface and a second surface that are arranged oppositely, and the first surface of the side column 10 in one second structure 40 is attached to the first surface of the side column 10 in another second structure 40, which provides sufficient winding space for the coil, and is also convenient for setting the magnetic sheet 4 and the gasket 5 in the magnetic device, while providing certain protection for other structures in the magnetic device. Each magnetic core 1 forms a magnetic circuit, reducing the shared magnetic loss, thereby reducing the power consumption of the magnetic device.

[0054] In one embodiment of the present invention, Figure 8 As shown, the magnetic device includes two first winding packages 2 and one second winding package 3 , and the two first winding packages 2 are arranged on both sides of one second winding package 3 .

[0055] In some embodiments, two first coils 2 and one second coil 3 are both wound around the center column 9 of the magnetic core 1. The first coils 2 are arranged on both sides of the second coil 3. The number of the first coil 2 and the second coil 3 can also be one or more, which can be set according to actual needs, and the present invention does not make specific limitations.

[0056] The magnetic device provided by the embodiment of the present invention is provided with two first coils 2 and one second coil 3, the two first coils 2 are provided on both sides of one second coil 3, and the first coil 2 and the second coil 3 form a transformer structure through magnetic conversion. There is a gap between the first coil 2 and the second coil 3, and the leakage inductance between the first coil 2 and the second coil 3 is used to form a resonant inductance, thereby forming a main-resonant integrated magnetic device.

[0057] In one embodiment of the present invention, Figure 8 As shown, the magnetic device further includes a spacer 7 , which is disposed between the first coil 2 and the second coil 3 .

[0058] In some embodiments, a spacer 7 is provided between any first coil 2 and any second coil 3. The spacer 7 is a circular ring, an elliptical ring, a rectangular ring, or a spacer of other shapes. The spacer 7 is sleeved on the middle column 9 of the magnetic core 1 to separate the two first coils 2 and the second coil 3. The spacer 7 can be made of insulating paperboard, ceramic, cable paper, etc., and the present invention does not make specific limitations. The inner diameter of the spacer 7 is adapted to the outer diameter of the magnetic sheet 4, so that the spacer 7 is arranged on the outer periphery of the magnetic sheet 4.

[0059] The magnetic device provided by the embodiment of the present invention is provided with a spacer 7, which is provided between the first coil 2 and the second coil 3, so that the distance between the first coil 2 and the second coil 3 can be controlled, thereby controlling the leakage inductance between the first coil 2 and the second coil 3 and adjusting the magnitude of the resonant inductance value. At the same time, the spacer 7 also has the effect of conducting and balancing the heat of the first coil 2 and the second coil 3, thereby enhancing the heat dissipation effect of the magnetic core 1.

[0060] In one embodiment of the present invention, Fig. 9 and Fig.10 As shown, the magnetic device further includes a base 8 , which is connected to the magnetic core 1 .

[0061] In some embodiments, the base 8 is provided with a slot structure 81, a reinforcing rib 82, an isolation strip 83 and a latch 84. The base 8 is provided with a plurality of slots 81 to facilitate fixation with the magnetic core 1; the base 8 is provided with a plurality of reinforcing ribs 82 to enhance the structural strength of the base 8; the base 8 is provided with at least two isolation strips 83 for snap-fitting with the magnetic core 1; the base 8 is also provided with a plurality of latches 84 for fixing the base 8 and the magnetic core 1. The magnetic core 1 and the base 8 are snap-fitted with the above structure and fixed by glue. The magnetic core 1 and the base 8 can also be connected and fixed by other means, such as by bolts, pins, clamps, etc., as long as the connection between the magnetic core 1 and the base 8 is ensured to be stable, and the present invention does not make specific limitations.

[0062] It is worth noting that the number of magnetic cores 1 in this embodiment is not specifically limited, and two magnetic cores 1 can be connected to the base 8, or four magnetic cores 1 can be connected to the base 8, or any other number of magnetic cores 1 can be connected to the base 8.

[0063] The magnetic device provided in the embodiment of the present invention is connected to the magnetic core 1 by setting a base 8, and a slot structure 81, a reinforcing rib 82, an isolation strip 83 and a latch 84 are set on the base 8, so that the base 8 and the magnetic core 1 are connected and fixed. The base 8 has a high structural strength. In practical applications, it is easy to install, can effectively prevent the magnetic device from loosening, and is conducive to ventilation and heat dissipation.

[0064] In one embodiment of the present invention, Figure 4 As shown, the heat conducting member 6 of the magnetic device is provided with a second hole 22 .

[0065] In some embodiments, the second hole 22 is a through hole, that is, the second hole 22 passes through the heat conducting member 6. The number of the second holes 22 can be one or more. The shape of the second hole 22 can be circular, elliptical, rectangular, etc., which is not specifically limited in the present invention.

[0066] In the magnetic device provided by the embodiment of the present invention, the heat conductive member 6 is provided with the second hole 22 , so that the mass of the heat conductive member 6 is reduced and it is convenient to fix the heat conductive member 6 with the magnetic core 1 by glue.

[0067] An embodiment of the present invention further provides a transformer, which includes the magnetic device mentioned above.

[0068] The transformer provided by the embodiment of the present invention includes the above-mentioned magnetic device, which can integrate the originally independent transformer and resonant inductor, reduce the volume of the transformer, and at the same time, the magnetic flux is more evenly distributed in the magnetic circuit, thereby reducing local concentration of magnetic flux and magnetic saturation, improving the efficiency and stability of the transformer, and having good ventilation and heat dissipation effects.

[0069] Finally, it should be noted that the above embodiments are only used to illustrate the present invention, rather than to limit the present invention. Although the present invention is described in detail with reference to the embodiments, it should be understood by those skilled in the art that various combinations, modifications or equivalent substitutions of the technical solutions of the present invention do not depart from the spirit and scope of the technical solutions of the present invention, and should be included in the scope of the claims of the present invention.

Claims

1. A magnetic device, characterized in that: include: A magnetic core (1), the magnetic core (1) comprising a middle column (9) and side columns (10); A first winding package (2), the first winding package (2) being wound around the magnetic core (1); a second winding package (3), the second winding package (3) being wound around the magnetic core (1), the second winding package (3) being spaced apart from the first winding package (2); A magnetic sheet (4), the magnetic sheet (4) being arranged in the first winding package (2) and / or the second winding package (3); A gasket (5), the gasket (5) being arranged between the magnetic sheet (4) and the magnetic core (1); A heat conducting member (6), wherein the heat conducting member (6) is arranged between two adjacent magnetic cores (1).

2. The magnetic device according to claim 1, characterized in that The center column (9) is provided with a quarter-circular groove (11), the surfaces of the four magnetic cores (1) provided with the quarter-circular groove (11) are fitted together to form a first structure (30), and the four quarter-circular grooves (11) form a first hole (21).

3. The magnetic device according to claim 2, characterized in that A first slot (51) or a second slot (52) is formed between two adjacent magnetic cores (1) in the first structure (30), wherein the first slots (51) in the first structure 30 are arranged opposite to the first slots (51), and the second slots (52) are arranged opposite to the second slots (52).

4. The magnetic device according to claim 2 or 3, characterized in that The number of the magnetic cores (1) is eight, and four of the magnetic cores (1) form one first structure (30); The side column (10) comprises a first surface and a second surface which are arranged opposite to each other, and the first surface of the side column (10) in one of the first structures (30) and the first surface of the side column (10) in another of the first structures (30) are mutually fitted.

5. The magnetic device according to claim 4, characterized in that The magnetic device comprises two first winding packages (2) and one second winding package (3), wherein the two first winding packages (2) are arranged on both sides of one second winding package (3).

6. The magnetic device according to claim 5, characterized in that Also includes: A spacer (7), wherein the spacer (7) is arranged between the first winding package (2) and the second winding package (3).

7. The magnetic device according to claim 1, characterized in that Also includes: A base (8), the base (8) being connected to the magnetic core (1).

8. The magnetic device according to claim 1, characterized in that The heat conducting member (6) is arranged between the middle columns (9) of two adjacent magnetic cores (1).

9. The magnetic device according to claim 1, characterized in that The heat conducting member (6) is provided with a second hole (22).

10. A transformer, characterized in that: The transformer comprises a magnetic device as claimed in any one of claims 1-9.

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