Magnetic device

Abstract

The utility model provides a magnetic device which comprises a magnetic core, a winding, a bottom plate and a baffle, the bottom plate is arranged on one side of the magnetic core, the winding wraps the magnetic core, and a pin is led out of the winding; the baffle is arranged on the side, facing the magnetic core, of the bottom plate and has a preset size, and the pins extend to the side, away from the magnetic core, of the bottom plate through the side, away from the magnetic core, of the baffle so as to be connected with the outside. Pins led out of the winding arranged on the magnetic core can pass through the baffle and then extend to the bottom plate to protrude out of the side, away from the magnetic core, of the bottom plate, and therefore the pins led out of the winding can be used for being connected with the outside. As the baffle plate has a preset size, namely, the baffle plate is higher than the bottom plate and has a certain height, the pins and the magnetic core can be well isolated, the insulation between the winding and the magnetic core is enhanced, and the reliability of the transformer is improved. And meanwhile, due to the existence of the baffle plate, an insulating tape does not need to be additionally arranged between the magnetic core and the pin for protection, so that the risk that the insulating property is reduced due to the damage of the insulating tape due to misoperation in the mounting process is avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of inductor, especially relates to a magnetic device. BACKGROUND

[0002] The magnetic device usually comprises a magnetic core, a winding, a skeleton and a bottom plate, wherein the winding has a pin led out. In the related art, in order to insulate the pin and the magnetic core, a magnetic core rubber band process is usually needed, so that insulation protection between the magnetic core and the pin can be realized by an insulating rubber band. However, the insulating rubber band is easy to break. Therefore, in the actual installation process, there is a risk that the insulating performance is reduced due to improper operation and breakage of the insulating rubber band. SUMMARY

[0003] The technical purpose of the utility model is to provide a magnetic device, aiming at solving the technical problem that the magnetic device in the related art has the risk that the insulating performance is reduced due to improper operation and breakage of the insulating rubber band.

[0004] To solve the above technical problem, the utility model is realized in this way, a magnetic device, comprising a magnetic core, a winding, a bottom plate and a baffle, the bottom plate is arranged on one side of the magnetic core, the winding is wrapped around the magnetic core, and the winding has a pin led out; the baffle is arranged on one side of the bottom plate facing the magnetic core, and the baffle has a preset size, the pin extends to one side of the bottom plate away from the magnetic core through one side of the baffle away from the magnetic core, so as to be connected to the outside.

[0005] Further, in some embodiments, the baffle and the bottom plate are integrally arranged.

[0006] Further, in some embodiments, the baffle and the bottom plate are connected in a split body.

[0007] Further, in some embodiments, the winding comprises a primary winding and a secondary winding, the magnetic device comprises two baffles, the two baffles are arranged along a first direction and are arranged on the bottom plate, and the magnetic core is arranged between the two baffles; two pins led out by the primary winding extend to one side of the bottom plate away from the magnetic core through one of the baffles; two pins led out by the secondary winding extend to one side of the bottom plate away from the magnetic core through the other baffle.

[0008] Further, in some embodiments, the bottom plate is provided with four through holes arranged at intervals, wherein two of the through holes are located on one side of one of the baffles away from the magnetic core, and the other two through holes are located on one side of the other baffle away from the magnetic core; the pins pass through the through holes to extend to one side of the bottom plate away from the magnetic core, and the pins and the through holes correspond one by one.

[0009] Further, in some embodiments, the bottom plate is provided with a communication heat dissipation groove, the heat dissipation groove is provided with a first opening and two second openings which are perpendicular to the first opening, the magnetic core is arranged at the first opening to form a heat dissipation channel, and the two second openings are used for communicating the heat dissipation channel with the outside.

[0010] Further, in some embodiments, the heat dissipation groove is further provided with a plurality of heat dissipation windows which are arranged at intervals and away from the side of the first opening, and the heat dissipation windows communicate the outside with the heat dissipation channel.

[0011] Further, in some embodiments, the magnetic core comprises a middle column and two side walls which are arranged at two sides of the middle column respectively, and the bottom plate is fixedly connected to one side of one of the side walls which is away from the middle column; the magnetic device further comprises a skeleton which is sleeved outside the middle column and located between the two side walls, and the winding is wound outside the skeleton and has a lead pin which extends to the bottom plate.

[0012] Further, in some embodiments, the outer periphery of the middle column is composed of an arc surface and a tangent surface, and the arc surface is adapted to the skeleton to adapt to the circular winding.

[0013] Further, in some embodiments, the magnetic core further comprises two magnetic yokes which are arranged perpendicularly to the middle column and the side walls, and the two magnetic yokes are connected to two ends of the middle column respectively, and the middle column is connected to the two side walls located at two sides through the magnetic yokes.

[0014] Further, in some embodiments, there is a heat dissipation space which communicates with the outside between the edges of the two side walls, a plurality of heat dissipation holes which are arranged at intervals are arranged at the position of the outside of the skeleton which faces the heat dissipation space, and the heat dissipation holes penetrate to communicate the middle column with the heat dissipation space.

[0015] Compared with the related art, the magnetic device has the beneficial effects that:

[0016] In the utility model, the bottom plate is arranged at one side of the magnetic core, and the baffle is arranged at one side of the bottom plate which faces the magnetic core, so that the lead pin which is led out by the winding arranged at the magnetic core can extend to the bottom plate through the baffle and protrude to one side of the bottom plate which is away from the magnetic core, so that the lead pin led out by the winding can be used for connecting the outside. Since the baffle has a preset size, that is, the baffle is higher than the bottom plate and has a certain height, so that the baffle can well isolate the lead pin and the magnetic core, strengthen the insulation of the winding and the magnetic core, and increase the reliability of the transformer. At the same time, because of the existence of the baffle, the insulation tape does not need to be additionally increased for protection between the magnetic core and the lead pin, the process of wrapping the magnetic core with the insulation tape is saved, and the risk of insulation performance reduction caused by improper operation and damage of the insulation tape during installation is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0018] Fig. 1 is a structural schematic diagram of a magnetic device in the embodiments of the present application;

[0019] Fig. 2 is a partial structural schematic diagram of a magnetic device in the embodiments of the present application;

[0020] Fig. 3 is a structural schematic diagram of a magnetic core in the embodiments of the present application.

[0021] In the drawings, the reference signs represent: 1, magnetic core; 11, middle column; 111, arc surface; 112, cutting surface; 12, side wall; 13, magnetic yoke; 2, winding; 21, pin; 3, bottom plate; 31, heat dissipation groove; 32, heat dissipation window; 33, through hole; 4, baffle; 5, framework; 51, heat dissipation hole. DETAILED DESCRIPTION

[0022] The embodiments of the present application will be described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0023] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "circumferential", "radial" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0024] In addition, the terms "first", "second", "third", etc. are used only for descriptive purposes and should not be construed as implying or suggesting relative importance or an indicated number of technical features. Thus, features defined with "first", "second", etc. can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise explicitly specified.

[0025] Please refer to Figs. 1 to 3 The magnetic device provided by the embodiment of the present application comprises a magnetic core 1, a winding 2, a bottom plate 3 and a baffle plate 4. The bottom plate 3 is arranged on one side of the magnetic core 1. The winding 2 is wrapped around the magnetic core 1, and the winding 2 has a pin 21 extending therefrom. The baffle plate 4 is arranged on the side of the bottom plate 3 facing the magnetic core 1, and the baffle plate 4 has a preset size. The pin 21 extends to the side of the bottom plate 3 away from the magnetic core 1 through the side of the baffle plate 4 away from the magnetic core 1, so as to be connected to the outside.

[0026] In the embodiment of the present application, the bottom plate 3 is arranged on one side of the magnetic core 1, and the baffle plate 4 is arranged on the side of the bottom plate 3 facing the magnetic core 1. In this way, the pin 21 extending from the winding 2 arranged on the magnetic core 1 can extend to the side of the bottom plate 3 away from the magnetic core 1 through the baffle plate 4, so that the pin 21 extending from the winding 2 can be used to connect to the outside. Since the baffle plate 4 has a preset size, that is, the baffle plate 4 is higher than the bottom plate 3 and has a certain height, the baffle plate 4 can well isolate the pin 21 and the magnetic core 1, strengthen the insulation of the winding 2 and the magnetic core 1, and increase the reliability of the transformer. At the same time, due to the presence of the baffle plate 4, no additional insulating tape is needed for protection between the magnetic core 1 and the pin 21, which saves the process of wrapping the magnetic core 1 with the insulating tape and avoids the risk of insulation performance degradation caused by improper operation during installation due to damage of the insulating tape.

[0027] Further, in some embodiments, the baffle plate 4 and the bottom plate 3 can be integrally formed, so that the baffle plate 4 protrudes from the surface of the bottom plate 3. In this way, the pin 21 can also extend to the side of the bottom plate 3 away from the magnetic core 1 through the baffle plate 4.

[0028] Further, in some embodiments, the baffle plate 4 and the bottom plate 3 are connected separately, and the baffle plate 4 and the bottom plate 3 can be formed respectively. The baffle plate 4 and the bottom plate 3 can be connected by welding, concave-convex fitting or other connection modes.

[0029] Further, in some embodiments, the winding 2 comprises a primary winding 2 and a secondary winding 2, and the magnetic device comprises two baffle plates 4. The two baffle plates 4 are arranged on the bottom plate 3 along a first direction, and the magnetic core 1 is arranged between the two baffle plates 4. The two pins 21 extending from the primary winding 2 extend to the side of the bottom plate 3 away from the magnetic core 1 through one of the baffle plates 4. The two pins 21 extending from the secondary winding 2 extend to the side of the bottom plate 3 away from the magnetic core 1 through the other baffle plate 4.

[0030] Specifically, the extension direction of the baffle 4 can be parallel to the extension direction of the winding 2. Two baffles 4 can be spaced apart on both sides of the base plate 3 along a first direction, which is orthogonal to the extension direction of the winding 2. On the one hand, one baffle 4 can be used to isolate the two pins 21 of the magnetic core 1 and the primary winding 2, and the other baffle 4 can be used to isolate the two pins 21 of the magnetic core 1 and the secondary winding 2, which can strengthen the insulation between the primary winding 2 and the magnetic core 1, and between the secondary winding 2 and the magnetic core 1, and increase the reliability of the transformer. On the other hand, the magnetic core 1 is placed between the two baffles 4, which can achieve a positioning function and center the magnetic core 1. During assembly, the position of the magnetic core 1 relative to the base plate 3 can be directly determined by the position of the two baffles 4, which is beneficial to the assembly of the magnetic core 1 and the base plate 3.

[0031] In some embodiments, the extension length of the baffle 4 can be reduced so that the two baffles 4 are separated into four baffles 4. The four baffles 4 are adapted to the positions of the four pins 21, which can also isolate the pins 21 of the magnetic core 1 and the winding 2, and can also achieve the positioning of the magnetic core 1. This will not be elaborated here.

[0032] Furthermore, in some embodiments, the base plate 3 has four perforations 33 arranged at intervals, two of which are located on the side of one of the baffles 4 away from the magnetic core 1, and the other two perforations 33 are located on the side of another baffle 4 away from the magnetic core 1; the pin 21 passes through the perforations 33 to extend to the side of the base plate 3 away from the magnetic core 1, and the pin 21 and the perforation 33 correspond one-to-one.

[0033] Specifically, the through hole 33 can be adapted to the position of the pin 21. The through hole 33 is located on the side of the baffle 4 away from the magnetic core 1, so that the pin 21, which is led out after the winding 2 is set on the magnetic core 1, can pass through the through hole 33 through the baffle 4. In this way, the pin 21 and the magnetic core 1 can be well isolated, the insulation between the winding 2 and the magnetic core 1 can be strengthened, and the reliability of the transformer can be increased. At the same time, the pin 21 can be positioned by passing through the through hole 33.

[0034] Furthermore, in some embodiments, the base plate 3 has a communicating heat dissipation groove 31, the heat dissipation groove 31 has a first opening and two second openings orthogonal to the first opening, the magnetic core 1 is disposed at the first opening to form a heat dissipation channel, and the two second openings are used to connect the heat dissipation channel to the outside.

[0035] Specifically, a heat dissipation groove 31 can be formed in the middle of the base plate 3. The heat dissipation groove 31 has a first opening and two second openings. The magnetic core 1 covers the first opening, so that the magnetic core 1 and the heat dissipation groove 31 can enclose and form a heat dissipation channel. The two second openings are located at both ends of the heat dissipation channel, allowing the heat dissipation channel to connect to the outside. Therefore, the heat generated by the magnetic core 1 can be dissipated to the outside through the heat dissipation channel, which can effectively reduce the temperature rise of the magnetic core 1 and improve the power density.

[0036] Further, in some embodiments, the heat dissipation groove 31 is further provided with a plurality of heat dissipation windows 32 arranged at intervals on the side away from the first opening, and the heat dissipation windows 32 are in communication with the outside and the heat dissipation channel.

[0037] Specifically, the middle of the bottom plate 3 can be a hollow structure, and support bars can be arranged at the hollow positions to connect the two sides of the bottom plate 3, and the two sides of the bottom plate 3 protrude from the support bars towards the surface of the magnetic core 1, so that the heat dissipation groove 31 can be formed above the support bars at the hollow positions. A plurality of support bars are arranged at intervals, so that a heat dissipation window 32 can be formed between two adjacent support bars. The heat dissipation window 32 is in communication with the heat dissipation groove 31 and the side of the bottom plate 3 away from the magnetic core 1, that is, the heat dissipation window 32 is in communication with the magnetic core 1 and the outside, so as to further improve the heat dissipation capacity of the magnetic core 1 and effectively reduce the temperature rise of the magnetic core 1.

[0038] Further, in some embodiments, the magnetic core 1 includes a middle column 11 and two side walls 12 respectively arranged on the two sides of the middle column 11, and the bottom plate 3 is fixedly connected to the side of one of the side walls 12 away from the middle column 11; the magnetic device further includes a skeleton 5, the skeleton 5 is sleeved outside the middle column 11 and located between the two side walls 12, and the winding 2 is wound outside the skeleton 5 and the lead pin 21 is extended to the bottom plate 3.

[0039] Specifically, the bottom plate 3 is arranged on one of the side walls 12, and the bottom plate 3 can be attached to the surface of the side wall 12, and the baffle 4 can be parallel to the thickness direction of the side wall 12. The skeleton 5 is sleeved outside the middle column 11 and located between the two side walls 12, and the winding 2 is wound on the skeleton 5, that is, the winding 2 is arranged on the side of the side wall 12 away from the bottom plate 3. Therefore, by arranging the baffle 4, the lead pin 21 extended to the bottom plate 3 after being wound on the skeleton 5 can be overlapped on the baffle 4, so as to well isolate the winding 2 and the magnetic core 1 and strengthen the insulation between the winding 2 and the magnetic core 1. In addition, by adopting the skeleton 5 winding structure, the winding can be more convenient, and the production cost can be reduced.

[0040] Further, in some embodiments, the outer periphery of the middle column 11 is composed of an arc surface 111 and a tangent surface 112, wherein the arc surface 111 is adapted to the skeleton 5 to adapt to the circular winding 2.

[0041] Specifically, the middle column 11 can be a cylinder with a part cut off, so that the outer circumferential surface of the middle column 11 has an arc surface 111 and a cut surface 112, wherein the arc surface 111 can be adapted to the skeleton 5, and the skeleton 5 is adapted to the circular winding 2, that is, the magnetic device of the embodiment of the utility model can be adapted to the circular winding 2, and the winding efficiency of the circular winding 2 is higher, and the damage degree of the winding 2 wire to the circular winding 2 is smaller. In addition, the cut surface 112 can form a ventilation channel between the middle column 11 and the winding 2, so as to improve the heat dissipation capacity of the middle column 11. In addition, compared with the cylinder, the cut surface 112 is arranged on the middle column 11, the heat dissipation area of the surface of the middle column 11 can be increased, and the heat dissipation efficiency of the middle column 11 can be further accelerated.

[0042] It can be understood that the embodiment of the utility model can be applied to other shapes of winding 2, for example, it can be applied to an oval winding 2 and the like. Similarly, the structure of the baffle 4 and the bottom plate 3 can be used to isolate the winding 2 and the magnetic core 1, and the insulation of the winding 2 and the magnetic core 1 can be strengthened, which will not be repeated here.

[0043] Further, in some embodiments, the magnetic core 1 further comprises two magnetic yokes 13 arranged orthogonally to the middle column 11 and the side wall 12, and the two magnetic yokes 13 are respectively connected to the two ends of the middle column 11, and the middle column 11 is connected to the two side walls 12 on both sides through the magnetic yokes 13.

[0044] Specifically, the middle column 11 can be connected through the magnetic yoke 13 and the side wall 12 on both sides, so as to form the magnetic core 1. The magnetic core 1 can include two parts arranged symmetrically, wherein one part includes a magnetic yoke 13, a part of the side wall 12 and a part of the middle column 11; the other part includes another magnetic yoke 13, another part of the side wall 12 and another part of the middle column 11. In this way, during assembly, the skeleton 5 can be first connected to one part of the magnetic core 1, and then the other part of the magnetic core 1 is connected, so that the skeleton 5 can be conveniently assembled on the middle column 11.

[0045] Further, in some embodiments, the edges of the two side walls 12 have a heat dissipation space communicating with the outside, and the position of the outer side of the skeleton 5 towards the heat dissipation space is provided with a plurality of heat dissipation holes 51 arranged at intervals, and the heat dissipation holes 51 penetrate to communicate the middle column 11 and the heat dissipation space.

[0046] Specifically, the two side walls 12 are arranged at intervals, and the space between the two side walls 12 is used to arrange the middle column 11, and the two edges of the space form a heat dissipation space. The skeleton 5 is located between the two side walls 12, and a part of the skeleton 5 is towards the side wall 12 and another part is towards the heat dissipation space, and the part of the skeleton 5 towards the heat dissipation space is provided with a heat dissipation hole 51, so that the middle column 11 arranged in the skeleton 5 can be cooled through the heat dissipation hole 51.

[0047] It can be understood that although the winding 2 is wound outside the skeleton 5, the winding 2 can have a certain gap between the turns, so that the heat of the middle column 11 can flow to the winding 2 through the heat dissipation hole 51 and then flow to the heat dissipation space, so as to achieve heat dissipation.

[0048] In the above embodiments, the description of each embodiment has its own emphasis, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0049] The above is the description of the technical scheme provided by the utility model, for the technical personnel in the art, according to the idea of the embodiment of the utility model, there will be changes in specific implementation and application range, in conclusion, the content of the specification should not be understood as the limitation of the utility model.

Claims

1. A magnetic device, characterized by, The magnetic core, the winding, the bottom plate and the baffle plate, the bottom plate is arranged on one side of the magnetic core, the winding is wrapped around the magnetic core, and the winding has a pin; The baffle plate is arranged on one side of the bottom plate facing the magnetic core, and the baffle plate has a predetermined size, the pin extends to the side of the bottom plate away from the magnetic core through the side of the baffle plate away from the magnetic core, and is used for connecting the outside.

2. The magnetic device of claim 1, wherein, The baffle plate and the bottom plate are integrally arranged; or, the baffle plate and the bottom plate are connected in a split manner.

3. The magnetic device of claim 1, wherein, The winding includes a primary winding and a secondary winding, the magnetic device includes two baffle plates, the two baffle plates are arranged along a first direction and are spaced apart on the bottom plate, and the magnetic core is arranged between the two baffle plates; two pins of the primary winding extend to the side of the bottom plate away from the magnetic core through one of the baffle plates; two pins of the secondary winding extend to the side of the bottom plate away from the magnetic core through the other baffle plate.

4. The magnetic device of claim 3, wherein, The bottom plate is provided with four spaced-apart through holes, two of which are located on one side of the baffle plate away from the magnetic core, and the other two are located on the side of the other baffle plate away from the magnetic core; the pins pass through the through holes to extend to the side of the bottom plate away from the magnetic core, and the pins and the through holes correspond one by one.

5. The magnetic device of claim 1, wherein, The bottom plate is provided with a communication heat dissipation groove, the heat dissipation groove has a first opening and two second openings orthogonal to the first opening, the magnetic core is arranged at the first opening to form a heat dissipation channel, and the two second openings are used to communicate the heat dissipation channel with the outside.

6. The magnetic device of claim 5, wherein, The side of the heat dissipation groove away from the first opening is also provided with a plurality of spaced-apart heat dissipation windows, which communicate the outside and the heat dissipation channel.

7. The magnetic device of claim 1, wherein, The magnetic core includes a middle column and two side walls arranged on both sides of the middle column, and the bottom plate is fixedly connected to one side of one of the side walls away from the middle column; the magnetic device further includes a framework, the framework is sleeved outside the middle column and located between the two side walls, and the winding is wound outside the framework and has a pin extending to the bottom plate.

8. The magnetic device of claim 7, wherein, The outer periphery of the middle column is composed of an arc surface and a tangent surface, and the arc surface is adapted to the framework to adapt to a circular winding.

9. The magnetic device of claim 7, wherein, The magnetic core further includes two magnetic yokes arranged orthogonally to the middle column and the side walls, and the two magnetic yokes are respectively connected to both ends of the middle column, and the middle column is connected to the two side walls located on both sides through the magnetic yokes.

10. The magnetic device of claim 8, wherein, There is a heat dissipation space between the edges of the two side walls, which communicates with the outside, and a plurality of spaced-apart heat dissipation holes are arranged on the position of the outer side of the framework facing the heat dissipation space, and the heat dissipation holes penetrate to communicate the middle column and the heat dissipation space.

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