Inductor and electrical equipment

Abstract

The utility model relates to the technical field of inductors, and discloses an inductor and electrical equipment. The inductor comprises a first magnetic core, a second magnetic core, a first winding and a second winding. The first magnetic core is in butt joint with the second magnetic core, the first magnetic core is provided with a first wrapping post extending towards the direction of the second magnetic core, and the second magnetic core is provided with a second wrapping post extending towards the direction of the first magnetic core. The first winding is wound on the first wrapping post, and the second winding is wound on the second wrapping post. Wherein a first air gap is reserved between the first wrapping post and the second wrapping post, a second air gap is reserved between the first winding and the second winding, and the first air gap and the second air gap are communicated with each other and form a first heat dissipation channel. Therefore, the first winding and the second winding can avoid the first air gap, and the temperature of the first winding and the temperature of the second winding are reduced through convection formed by the first heat dissipation channel, so that the heat dissipation performance and the power density of the inductor are improved, and the alternating current loss of the inductor is reduced.

Description

Technical Field

[0001] The present application relates to the field of inductance technology, and in particular to an inductor and an electrical device. Background Art

[0002] In the related art, an inductor is usually composed of two magnetic cores and a winding, and the two magnetic cores have winding posts respectively, and the winding is wound on the two winding posts. However, due to the existence of a magnetic core gap between the two winding posts, the temperature of the winding near the magnetic core gap is higher, resulting in large AC loss of the inductor and poor heat dissipation effect, which limits the improvement of the inductor power density. Summary of the invention

[0003] In order to solve the problems existing in the prior art, the present application provides an inductor and an electrical device, wherein a first winding and a second winding are respectively wound around a first winding post and a second winding post, and a first heat dissipation channel is formed based on a first air gap and a second air gap, so that the first winding and the second winding can avoid the first air gap on the one hand, and convection can be formed through the first heat dissipation channel to reduce the temperature of the first winding and the second winding on the other hand. Thus, the heat dissipation and power density of the inductor can be improved, and the AC loss of the inductor can be reduced.

[0004] An embodiment of the present application provides an inductor, comprising:

[0005] A first magnetic core and a second magnetic core, wherein the first magnetic core is connected to the second magnetic core, the first magnetic core is configured with a first winding post extending toward the second magnetic core, and the second magnetic core is configured with a second winding post extending toward the first magnetic core;

[0006] A first winding, wound around the first winding post;

[0007] A second winding, wound around the second winding post;

[0008] A first air gap is provided between the first winding post and the second winding post, a second air gap is provided between the first winding and the second winding, and the first air gap and the second air gap are connected to each other to form a first heat dissipation channel.

[0009] In some embodiments, the first winding is glued to the first winding post, and the second winding is glued to the second winding post.

[0010] In some embodiments, the inductor further comprises:

[0011] The auxiliary winding is wound around the first winding post or the second winding post, and the auxiliary winding is arranged away from the first heat dissipation channel.

[0012] In some embodiments, along the axial direction of the first winding column, the width of the first air gap is D, and the width of the second air gap is d, wherein D≤d.

[0013] In some embodiments, the first winding includes a plurality of strands of twisted wire, and the second winding includes a plurality of strands of twisted wire.

[0014] In some embodiments, the first magnetic core includes a first cover plate, and the first cover plate is respectively constructed with a first side column and a second side column extending toward the second magnetic core on two opposite sides, and the first winding column is located between the first side column and the second side column. The second magnetic core includes a second cover plate, and the second cover plate is respectively constructed with a third side column and a fourth side column extending toward the first magnetic core on two opposite sides, wherein the first side column is docked with the third side column, and the second side column is docked with the fourth side column.

[0015] In some embodiments, the first side column and / or the second side column is configured with a first wire groove, and the first wire groove penetrates the first side column and / or the second side column along the radial direction of the first winding column, wherein the lead wire of the first winding is passed through the first wire groove;

[0016] The third side column and / or the fourth side column are configured with a second wire groove, and the second wire groove penetrates the third side column and / or the fourth side column along the radial direction of the second winding column, wherein the lead wire of the second winding is passed through the second wire groove.

[0017] In some embodiments, the first side column includes at least two first common columns arranged at intervals, and the first wire groove is formed between every two adjacent first common columns;

[0018] And / or, the second side column includes at least two second common columns arranged at intervals, and the first wire groove is formed between every two adjacent second common columns;

[0019] And / or, the third side column comprises at least two third common columns arranged at intervals, and the second wire groove is formed between every two adjacent third common columns;

[0020] And / or, the fourth side column includes at least two fourth common columns arranged at intervals, and the second wire groove is formed between every two adjacent fourth common columns.

[0021] In some embodiments, the first wire slot is provided on the first side column, the second wire slot is provided on the third side column, and the inductor further comprises:

[0022] A base is connected to the first side column and the third side column, and a wire hole is configured on the base, and the wire hole is configured to pass the lead wire of the first winding and the lead wire of the second winding;

[0023] A first support block, disposed between the first side column and the base;

[0024] A second support block is disposed between the third side column and the base;

[0025] The first support block and the second support block are spaced apart from each other, so that a second heat dissipation channel is formed by the first support block, the first side column, the third side column, the second support block and the base.

[0026] An embodiment of the present application also provides an electrical device, comprising the aforementioned inductor.

[0027] The inductor and electrical equipment provided by the embodiments of the present application are characterized in that a first winding post and a second winding post extending toward each other are respectively provided on the first magnetic core and the second magnetic core, a first winding is wound on the first winding post, a second winding is wound on the second winding post, a first air gap is left between the first winding post and the second winding, and a second air gap is left between the first winding and the second winding, and finally a first heat dissipation channel is formed based on the first air gap and the second air gap. Thus, on the one hand, the first winding and the second winding can avoid the first air gap, and on the other hand, because the first heat dissipation channel is in direct contact with the external space of the inductor, the first heat dissipation channel can form convection with the external space of the inductor to reduce the temperature of the first winding and the second winding, thereby effectively improving the heat dissipation and power density of the inductor and reducing the AC loss of the inductor. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The technical solution and other beneficial effects of the present application will be made apparent by describing in detail the specific implementation methods of the present application in conjunction with the accompanying drawings.

[0029] Figure 1 This is one of the front views of the inductor provided in the embodiment of the present application.

[0030] Figure 2 for Figure 1 Schematic diagram of the exploded structure of the inductor provided.

[0031] Figure 3 This is the second front view of the inductor provided in the embodiment of the present application.

[0032] Figure 4 for Figure 3 Schematic diagram of the exploded structure of the inductor provided.

[0033] Figure 5 This is the third front view of the inductor provided in the embodiment of the present application.

[0034] Figure 6 for Figure 5Schematic diagram of the exploded structure of the inductor provided.

[0035] Figure 7 A circuit topology diagram of an inductor provided in an embodiment of the present application.

[0036] Reference numerals:

[0037] 10-first magnetic core, 110-first winding column, 120-first cover plate, 130-first side column, 140-second side column, 150-first wire slot, 160-first common column, 20-second magnetic core, 210-second winding column, 220-second cover plate, 230-third side column, 240-fourth side column, 30-first winding, 40-second winding, 50-first heat dissipation channel, 60-base, 610-wire hole, 710-first support block, 720-second support block, 80-second heat dissipation channel. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0039] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" 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 present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may 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 clearly and specifically defined.

[0040] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0041] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0042] The disclosure below provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the various specific processes and material examples provided by the present application, but those of ordinary skill in the art can appreciate the application of other processes and / or the use of other materials.

[0043] For details, please refer to Figures 1 to 7 The embodiment of the present application provides an inductor, which includes a first magnetic core 10, a second magnetic core 20, a first winding 30 and a second winding 40. The first magnetic core 10 is connected to the second magnetic core 20, and the first magnetic core 10 is configured with a first winding post 110 extending toward the second magnetic core 20, and the second magnetic core 20 is configured with a second winding post 210 extending toward the first magnetic core 10. The first winding 30 is wound on the first winding post 110, and the second winding 40 is wound on the second winding post 210. A first air gap is left between the first winding post 110 and the second winding post 210, and a second air gap is left between the first winding 30 and the second winding 40. The first air gap and the second air gap are mutually conductive and form a first heat dissipation channel 50.

[0044] In this embodiment, a first winding post 110 and a second winding post 210 extending toward each other are respectively provided on the first magnetic core 10 and the second magnetic core 20, a first winding 30 is wound on the first winding post 110, a second winding 40 is wound on the second winding post 210, a first air gap is left between the first winding post 110 and the second winding post 210, and a second air gap is left between the first winding 30 and the second winding 40, and finally a first heat dissipation channel 50 is formed based on the first air gap and the second air gap. Therefore, on the one hand, the first winding 30 and the second winding 40 can avoid the first air gap, and on the other hand, because the first heat dissipation channel 50 is in direct contact with the external space of the inductor, the first heat dissipation channel 50 can form convection with the external space of the inductor to reduce the temperature of the first winding 30 and the second winding 40, thereby effectively improving the heat dissipation and power density of the inductor and reducing the AC loss of the inductor.

[0045] The first air gap between the first winding post 110 and the second winding post 210 is the magnetic core air gap. Since the first winding 30 is wound on the first winding post 110 and the second winding 40 is wound on the second winding post 210, the first winding 30 and the second winding 40 can avoid the magnetic core air gap. Thus, the first winding 30 and the second winding 40 can be exposed to the ambient space, and the temperature of the first winding 30 and the second winding 40 can be reduced based on the heat convection of the first heat dissipation channel 50.

[0046] The first winding post 110 and the second winding post 210 are usually set to be cylindrical, and the first air gap is a cylindrical air gap. The first winding 30 and the second winding 40 are usually set to be annular cylinder, and the second air gap is annular cylinder air gap. The inner ring of the second air gap is mutually conductive with the first air gap, thereby forming a first heat dissipation channel 50.

[0047] In some embodiments, the first winding 30 includes a plurality of strands of twisted wire, and the second winding 40 also includes a plurality of strands of twisted wire. The plurality of strands of twisted wire may be a plurality of strands of twisted wire not covered with an insulating layer, or the plurality of strands of twisted wire may be a plurality of strands of twisted wire covered with an insulating layer. For example, the first winding 30 and the second winding 40 may be formed by using a plurality of strands of film-wrapped wire, a three-layer insulated wire, or the like to form windings.

[0048] In some embodiments, the inductor may be an LLC resonant inductor, and the first winding 30 and the second winding 40 are respectively connected in series to the electrical signal input terminal and the electrical signal output terminal of the transformer. Figure 7 The topological diagram shown is an inductor applied to a resonant circuit. Based on the characteristics of the inductor in the embodiment of the present application, the power density of the resonant circuit can also be improved.

[0049] In some embodiments, the first winding 30 is glued to the first winding post 110 , and the second winding 40 is glued to the second winding post 210 .

[0050] Specifically, after the first winding 30 is wound on the first winding post 110, it is also fixed to the first winding post 110 by glue dispensing. After the second winding 40 is wound on the first winding post 110, it is also fixed to the second winding post 210 by glue dispensing. As a result, the first winding 30 can be reliably fixed to the first winding post 110 and the second winding 40 can be reliably fixed to the second winding post 210 in both the horizontal and vertical placement states of the inductor, so that there is a second air gap between the first winding 30 and the second winding 40 regardless of the placement state. It can be understood that the fixing method of glue dispensing can ensure the reliability of the fixing of the first winding 30 and the second winding 40, so that the first winding 30 and the second winding 40 will not be close to each other under the action of gravity or other external forces.

[0051] In some embodiments, the inductor further includes an auxiliary winding, which is wound around the first winding post 110 or the second winding post 210 , and is disposed away from the first heat dissipation channel 50 .

[0052] Based on the setting of the auxiliary winding, the inductor can have three windings at the same time to meet the use requirements of specific situations. Since the auxiliary winding is set away from the first heat dissipation channel 50, the auxiliary winding will not occupy the space of the first heat dissipation channel 50, and will not close the first heat dissipation channel 50.

[0053] In some embodiments, the auxiliary winding may be a circle of thin wire, so that the auxiliary winding occupies less space and does not interfere with the heat dissipation of the first winding 30 and the second winding 40 .

[0054] The auxiliary winding may be wound on the first winding post 110 and located at a side away from the second winding 40 . Alternatively, the auxiliary winding may be wound on the first winding post 110 and located at a side close to the second winding 40 .

[0055] The auxiliary winding may also be wound on the second winding post 210 and located at a side away from the first winding 30 . Alternatively, the auxiliary winding may be wound on the second winding post 210 and located at a side close to the first winding 30 .

[0056] In some embodiments, along the axial direction of the first winding column 110 , the width of the first air gap is D, and the width of the second air gap is d, wherein D≤d. Further, to ensure the heat dissipation effect of the inductor, D≥1 mm.

[0057] It can be understood that, along the axial direction of the first winding post 110, when the width of the first winding 30 is equal to the width of the first winding post 110, and the width of the second winding 40 is equal to the width of the second winding post 210, D = d. When the first winding 30 does not completely cover the first winding post 110 in the width direction and / or the second winding 40 does not completely cover the second winding post 120 in the width direction, D < d.

[0058] When D=1 mm, and the first winding 30 is wound around the entire area of ​​the first winding post 110 and the second winding post 210 is wound around the entire area of ​​the second winding post 210, that is, D=d, the width of the formed first heat dissipation channel 50 is the smallest, and at this time the width of the first heat dissipation channel 50 is also 1 mm.

[0059] The widths of the first air gap and the second air gap may be reasonably set based on the size of the inductor so as to satisfy the heat convection heat dissipation effect of the first winding 30 and the second winding 40 .

[0060] like Figure 1 and Figure 2 As shown, in some embodiments, the first magnetic core 10 includes a first cover plate 120, and the first cover plate 120 is respectively constructed on two opposite sides with a first side column 130 and a second side column 140 extending toward the second magnetic core 20, and the first winding column 110 is located between the first side column 130 and the second side column 140, and the second magnetic core 20 includes a second cover plate 220, and the second cover plate 220 is respectively constructed on two opposite sides with a third side column 230 and a fourth side column 240 extending toward the first magnetic core 10, wherein the first side column 130 is connected to the third side column 230, and the second side column 140 is connected to the fourth side column 240.

[0061] The first cover plate 120, the first side column 130, the second side column 140 and the first winding column 110 can be formed in one piece. The first side column 130 and the second side column 140 can be located at the upper and lower sides of the first cover plate 120, respectively. The first winding column 110 is located in the middle of the height direction of the first cover plate 120, and the first side column 130, the second side column 140 and the first winding column 110 all extend in the direction of the second cover plate 220. The second cover plate 220, the third side column 230, the fourth side column 240 and the second winding column 210 can be formed in one piece. The third side column 230 and the fourth side column 240 can be located at the upper and lower sides of the second cover plate 220, respectively. The second winding column 210 is located in the middle of the height direction of the second cover plate 220, and the third side column 230, the fourth side column 240 and the second winding column 210 all extend in the direction of the first cover plate 120.

[0062] In some embodiments, the first side column 130 and the second side column 140 both extend along the width direction of the first cover plate 120, and the first side column 130 and the second side column 140 are respectively located at the upper position and the lower position of the first cover plate 120 facing the second cover plate 220. The third side column 230 and the fourth side column 240 both extend along the width direction of the second cover plate 220, and the third side column 230 and the fourth side column 240 are respectively located at the upper position and the lower position of the second cover plate 220 facing the first cover plate 120.

[0063] For example, the first side column 130 may be located at the lower side of the first cover plate 120, and the second side column 140 may be located at the upper side of the first cover plate 120. The third side column 230 may be located at the lower side of the second cover plate 220, and the fourth side column 240 may be located at the upper side of the second cover plate 220. Based on the docking of the first side column 130 with the third side column 230, and the docking of the second side column 140 with the fourth side column 240, the first magnetic core 10 and the second magnetic core 20 form a closed loop.

[0064] In some embodiments, the first side column 130 and the third side column 230 may be bonded to each other to ensure the stability of the connection between the first side column 130 and the third side column 230. The second side column 140 and the fourth side column 240 may be bonded to each other to ensure the stability of the connection between the second side column 140 and the fourth side column 240.

[0065] In some embodiments, after the first side column 130 is connected to the third side column 230 and the second side column 140 is connected to the fourth side column 240, multiple turns of tape can be wrapped from the outside to achieve a reliable connection between the first magnetic core 10 and the second magnetic core 20.

[0066] See also Figure 2 In some embodiments, the first side column 130 and / or the second side column 140 are configured with a first wire groove 150 , and the first wire groove 150 penetrates the first side column 130 and / or the second side column 140 along the radial direction of the first winding column 110 , wherein the lead wire of the first winding 30 is passed through the first wire groove 150 .

[0067] It can be understood that, based on the fact that the first winding 30 is wound around the first winding post 110, and the first winding post 110 is located between the first side post 130 and the second side post 140, in order to ensure that the lead wire of the first winding 30 can pass through the first magnetic core 10, a first wire groove 150 can be constructed in the first side post 130 and / or the second side post 140. The first wire groove 150 is a through groove, and penetrates the first side post 130 and / or the second side post 140 in the radial direction of the first winding post 110, so that the lead wire of the first winding 30 can pass through the first wire groove 150 and pass through the first magnetic core 10.

[0068] The width of the first wire slot 150 is greater than the diameter of the lead wire of the first winding 30 , so as to ensure that the lead wire of the first winding 30 can be inserted into the first wire slot 150 .

[0069] The lead wires of the first winding 30 are usually passed through the lower portion of the first magnetic core 10 , and thus the first wire slot 150 can be constructed on the first side column 130 .

[0070] In some embodiments, the third side column 230 and / or the fourth side column 240 are configured with a second wire groove, and the second wire groove penetrates the third side column 230 and / or the fourth side column 240 along the radial direction of the second winding column 210, wherein the lead wire of the second winding 40 is passed through the second wire groove.

[0071] It can be understood that, based on the second winding 40 being wound around the second winding post 210, the second winding post 210 is located between the third side post 230 and the fourth side post 240, in order to ensure that the lead wire of the second winding 40 can pass through the second magnetic core 20, a second wire groove can be constructed in the third side post 230 and / or the fourth side post 240. The second wire groove is a through groove, and penetrates the third side post 230 and / or the fourth side post 240 in the radial direction of the second winding post 210, so that the lead wire of the second winding 40 can pass through the second wire groove and pass through the second magnetic core 20.

[0072] The width of the second wire slot is greater than the diameter of the lead wire of the second winding 40 to ensure that the lead wire of the second winding 40 can be inserted into the second wire slot.

[0073] The lead wires of the second winding 40 usually pass through the lower portion of the second magnetic core 20 , and thus, the second wire slots can be constructed on the third side column 230 .

[0074] like Figure 2 As shown, in some embodiments, the first side column 130 includes at least two first common columns 160 disposed at intervals, and a first wire groove 150 is formed between every two adjacent first common columns 160 .

[0075] At least two first common columns 160 disposed at intervals are integrally formed on the first cover plate 120 , so that a first wire slot 150 is formed between every two adjacent first common columns 160 , thereby allowing the lead wires of the first winding 30 to pass through the lower portion of the first magnetic core 10 .

[0076] In some embodiments, the second side column 140 includes at least two second common columns that are spaced apart from each other, and a first wire groove 150 is formed between every two adjacent second common columns.

[0077] At least two second common columns disposed at intervals are integrally formed on the first cover plate 120 , so that a first wire slot 150 is formed between every two adjacent second common columns, so that the lead wire of the first winding 30 is passed through the upper part of the first magnetic core 10 .

[0078] In some embodiments, the third side column 230 includes at least two third common columns that are spaced apart from each other, and a second wire groove is formed between every two adjacent third common columns.

[0079] At least two third common columns disposed at intervals are integrally formed on the second cover plate 220 , so that a second wire slot is formed between every two adjacent third common columns, so that the lead wire of the second winding 40 is passed through the lower part of the second magnetic core 20 .

[0080] In some embodiments, the fourth side column 240 includes at least two fourth common columns that are spaced apart from each other, and a second wire groove is formed between every two adjacent fourth common columns.

[0081] At least two fourth common columns disposed at intervals are integrally formed on the second cover plate 220 , so that a second wire slot is formed between every two adjacent fourth common columns, so that the lead wire of the second winding 40 is passed through the upper part of the second magnetic core 20 .

[0082] See also Figure 3 and Figure 4 In some embodiments, the inductor further includes a base 60. The first wire slot 150 is provided on the first side column 130, and the second wire slot is provided on the third side column 230. The base 60 is connected to the first side column 130 and the third side column 230, and a wire hole 610 is configured on the base 60. The wire hole 610 is configured to pass the lead wires of the first winding 30 and the lead wires of the second winding 40.

[0083] The base 60 can be used as a bottom plate of the inductor to support the first magnetic core 10 and the second magnetic core 20 as a whole.

[0084] A plurality of wire holes 610 may be provided on the base 60, so that the lead wires of the first winding 30 and the lead wires of the second winding 40 can pass through the base 60 through the corresponding wire holes 610. It is understandable that the positions of the plurality of wire holes 610 correspond to the positions of the first wire slot 150 and the second wire slot, respectively.

[0085] See also Figure 5 and Figure 6 In some embodiments, the inductor further includes a first support block 710 and a second support block 720. The first support block 710 is disposed between the first side column 130 and the base 60. The second support block 720 is disposed between the third side column 230 and the base 60. The first support block 710 and the second support block 720 are spaced apart from each other, so that the first support block 710, the first side column 130, the third side column 230, the second support block 720 and the base 60 enclose a second heat dissipation channel 80.

[0086] The first support block 710 can be integrally formed on the lower side of the first side column 130, and the second support block 720 can be integrally formed on the lower side of the third side column 230. Based on the spacing between the first support block 710 and the second support block 720, the area between the first support block 710 and the second support block 720 can cooperate with the first side column 130 and the second side column 140 to basically form the second heat dissipation channel 80. Based on the convection heat dissipation of the second heat dissipation channel 80, the heat dissipation performance of the inductor can be further improved.

[0087] The first support block 710, the second support block 720 and the base 60 can all be made of flame-resistant materials. For example, the first support block 710, the second support block 720 and the base 60 are made of epoxy board. The embodiment of the present application does not limit the materials of the first support block 710, the second support block 720 and the base 60, as long as they have insulation properties and are resistant to high temperatures.

[0088] The embodiment of the present application further provides an electrical device, which includes the inductor in the above embodiment.

[0089] In this embodiment, a first winding post 110 and a second winding post 210 extending toward each other are respectively provided on the first magnetic core 10 and the second magnetic core 20, a first winding 30 is wound on the first winding post 110, a second winding 40 is wound on the second winding post 210, a first air gap is left between the first winding post 110 and the second winding post 210, and a second air gap is left between the first winding 30 and the second winding 40, and finally a first heat dissipation channel 50 is formed based on the first air gap and the second air gap. Thus, on the one hand, the first winding 30 and the second winding 40 can avoid the first air gap, and on the other hand, because the first heat dissipation channel 50 is in direct contact with the external space of the inductor, the first heat dissipation channel 50 can form convection with the external space of the inductor to reduce the temperature of the first winding 30 and the second winding 40, thereby effectively improving the heat dissipation and power density of the inductor and reducing the AC loss of the inductor.

[0090] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0091] The above is a detailed introduction to an inductor and an electrical device provided in the embodiments of the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the technical solutions and core ideas of the present application. Ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An inductor, characterized in that: include: A first magnetic core and a second magnetic core, wherein the first magnetic core is connected to the second magnetic core, the first magnetic core is configured with a first winding post extending toward the second magnetic core, and the second magnetic core is configured with a second winding post extending toward the first magnetic core; A first winding, wound around the first winding post; A second winding, wound around the second winding post; A first air gap is provided between the first winding post and the second winding post, a second air gap is provided between the first winding and the second winding, and the first air gap and the second air gap are connected to each other to form a first heat dissipation channel.

2. The inductor according to claim 1, wherein: The first winding is glued to the first winding post, and the second winding is glued to the second winding post.

3. The inductor according to claim 2, wherein: The inductor further comprises: The auxiliary winding is wound around the first winding post or the second winding post, and the auxiliary winding is arranged away from the first heat dissipation channel.

4. The inductor according to claim 1, wherein: Along the axial direction of the first winding column, the width of the first air gap is D, and the width of the second air gap is d, wherein D≤d.

5. The inductor according to claim 1, wherein: The first winding includes a plurality of strands of twisted wires, and the second winding includes a plurality of strands of twisted wires.

6. The inductor according to any one of claims 1 to 5, characterized in that: The first magnetic core includes a first cover plate, and the first cover plate is respectively constructed on two opposite sides with a first side column and a second side column extending toward the second magnetic core, and the first winding column is located between the first side column and the second side column. The second magnetic core includes a second cover plate, and the second cover plate is respectively constructed on two opposite sides with a third side column and a fourth side column extending toward the first magnetic core, wherein the first side column is connected to the third side column, and the second side column is connected to the fourth side column.

7. The inductor according to claim 6, wherein: The first side column and / or the second side column are configured with a first wire groove, the first wire groove penetrates the first side column and / or the second side column along the radial direction of the first winding column, wherein the lead wire of the first winding is passed through the first wire groove; The third side column and / or the fourth side column are configured with a second wire groove, and the second wire groove penetrates the third side column and / or the fourth side column along the radial direction of the second winding column, wherein the lead wire of the second winding is passed through the second wire groove.

8. The inductor according to claim 7, wherein: The first side column comprises at least two first common columns arranged at intervals, and the first wire groove is formed between every two adjacent first common columns; And / or, the second side column includes at least two second common columns arranged at intervals, and the first wire groove is formed between every two adjacent second common columns; And / or, the third side column comprises at least two third common columns arranged at intervals, and the second wire groove is formed between every two adjacent third common columns; And / or, the fourth side column includes at least two fourth common columns arranged at intervals, and the second wire groove is formed between every two adjacent fourth common columns.

9. The inductor according to claim 7, wherein: The first wire slot is provided at the first side column, and the second wire slot is provided at the third side column, wherein the inductor further comprises: A base is connected to the first side column and the third side column, and a wire hole is configured on the base, and the wire hole is configured to pass the lead wire of the first winding and the lead wire of the second winding; A first support block, disposed between the first side column and the base; A second support block is disposed between the third side column and the base; The first support block and the second support block are spaced apart from each other, so that a second heat dissipation channel is formed by the first support block, the first side column, the third side column, the second support block and the base.

10. An electrical device, characterized in that: The invention comprises an inductor as claimed in any one of claims 1 to 9.

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