Magnetic integrated structure

Abstract

The utility model discloses a magnetic integration structure which comprises a magnetic core, a magnetic core magnetic cover comprises a first side edge and a second side edge which are oppositely arranged in the first direction, a magnetic core side column is arranged on the first side edge, and a magnetic core transformer wrapping post and an inductor wrapping post are arranged on the magnetic cover in the second direction different from the first direction; the winding is wound on the transformer wrapping post, the winding comprises multiple turns, part of the multiple turns of the winding are wound on the transformer wrapping post and the inductor wrapping post at the same time, the inductor wrapping post is arranged close to the through channel of the side post, and the length of the through channel is larger than that of the inductor wrapping post in the second direction. According to the magnetic integrated structure, the transformer wrapping post and the inductor wrapping post are arranged on the magnetic cover, and part of turns in the multi-turn winding are wound on the transformer wrapping post and the inductor wrapping post at the same time, so that part of areas of part of windings are adjusted under the condition that the size of an original structure is not increased, and the needed induction value is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of switch power supply, and more specifically, to a magnetic integrated structure. Background Art

[0002] In switching power supply applications, especially resonant circuits such as LLC and CLL circuits, core integration or leakage inductance integration is often used to provide the resonant inductance or leakage inductance required by the circuit, so as to reduce the volume and weight of magnetic components, core loss, and improve power efficiency and power density.

[0003] Existing solutions usually require additional volume to provide the required inductance. For example, the entire winding is passed through two winding posts to achieve the required inductance. Or the resonant inductor winding post is set at an extension of the magnetic core body or outside the magnetic core body, so additional volume is required to provide the required inductance.

[0004] In view of this, there is an urgent need to provide a technical solution for a magnetic integrated structure so as to obtain the required inductance by adjusting part of the winding without increasing the volume. Utility Model Content

[0005] In order to at least solve one or more of the technical problems mentioned above, the utility model proposes a technical solution of a magnetic integrated structure in multiple aspects.

[0006] In the first aspect, the utility model provides a magnetic integrated structure, which includes a magnetic core and a winding. The magnetic core includes a first magnetic cover, a second magnetic cover, a side column, a transformer winding column and an inductor winding column, wherein the first magnetic cover and the second magnetic cover include a first side edge and a second side edge that are relatively arranged along a first direction, and a third side edge and a fourth side edge that are relatively arranged along a second direction, the side column is arranged on the first side edge of the first magnetic cover and / or the second magnetic cover, along the second direction, the side column includes a first end and a second end that are relatively arranged, the transformer winding column and the inductor winding column are both arranged on the first magnetic cover and / or the second magnetic cover, and the side column, the transformer winding column and the inductor winding column are connected between the first magnetic cover and the second magnetic cover. The first direction is different from the second direction, and along the cross-section of the plane formed by parallel to the first direction and the second direction, the cross-sectional area of ​​the transformer winding post is at least five times the cross-sectional area of ​​the inductor winding post; the side post is provided with a through channel, the inductor winding post is arranged close to the through channel, at least part of the winding wound on the inductor winding post is arranged in the through channel, and along the second direction, the length of the through channel is greater than the length of the inductor winding post; the winding is wound on the transformer winding post, wherein the winding comprises a plurality of turns, and some of the turns of the plurality of turns of the winding are simultaneously wound on the transformer winding post and the inductor winding post.

[0007] In some embodiments, along the first direction, the area directly opposite to the first side constitutes a main body area, and along the second direction, the main body area does not exceed the first end and the second end, and the transformer winding post and the inductor winding post are both arranged in the main body area.

[0008] In some embodiments, the inductor winding column is arranged between the side column and the transformer winding column, and the through channel is arranged between the first end and the second end of the side column.

[0009] In some embodiments, the side column is provided with a through channel, and the through channel is provided at the first end and / or the second end of the side column.

[0010] In some embodiments, the side column includes a first side column and a second side column, and the first side column and the second side column are respectively arranged on the first side edge and the second side edge.

[0011] In some embodiments, the first side column is provided with a first through channel, the second side column is provided with a second through channel, the inductor winding column includes a first inductor winding column and a second inductor winding column, at least a portion of the winding wound around the first inductor winding column is provided in the first through channel, and at least a portion of the winding wound around the second inductor winding column is provided in the second through channel.

[0012] In some embodiments, a first gap and a second gap are formed between the first side column and the second side column, and the inductor winding column is arranged in the first gap and / or the second gap.

[0013] In some embodiments, the winding includes a primary winding and a secondary winding, the primary winding and the secondary winding are wound on the transformer winding post to form a transformer, the primary winding includes multiple turns, some of the turns of the primary winding are simultaneously wound on the transformer winding post and the inductor winding post, or the secondary winding includes multiple turns, some of the turns of the secondary winding are simultaneously wound on the transformer winding post and the inductor winding post.

[0014] In some embodiments, the winding is a PCB winding, wherein the PCB winding includes multiple layers along the axial direction of the transformer winding post, wherein at least one layer of the PCB winding includes multiple turns along the radial direction of the transformer winding post, and some of the multiple turns of at least one layer of the PCB winding are simultaneously wound around the transformer winding post and the inductor winding post.

[0015] In some embodiments, the winding is a wire, wherein the wire comprises multiple layers along the radial direction of the transformer winding post, wherein at least one layer of the wire comprises multiple turns along the axial direction of the transformer winding post, and some of the multiple turns of at least one layer of the wire are simultaneously wound around the transformer winding post and the inductor winding post.

[0016] In some embodiments, the winding is a wire, wherein the wire comprises multiple layers along the axial direction of the transformer winding post, wherein at least one layer of the wire comprises multiple turns along the radial direction of the transformer winding post, and some of the multiple turns of at least one layer of the wire are simultaneously wound around the transformer winding post and the inductor winding post.

[0017] In some embodiments, the PCB winding includes common turns and adjacent turns, the common turns include partial turns that are simultaneously wound around the transformer winding post and the inductor winding post, the adjacent turns are adjacent to the common turns, wherein a first opening is formed between the adjacent turns and the common turns, and the inductor winding post passes through the first opening.

[0018] In some embodiments, the wire includes common turns and adjacent turns, the wire is wound on a skeleton, the common turns include partial turns simultaneously wound on the transformer winding post and the inductor winding post, the adjacent turns are adjacent to the common turns, wherein a second opening is formed between the adjacent turns and the common turns, and the inductor winding post passes through the second opening.

[0019] In some embodiments, the first opening includes a first part and a second part, the first part is formed by a part of the common turn, and the second part is formed by a part of the adjacent turn, wherein the winding width of the first part is smaller than the winding width when the common turn does not form the first part, and the winding width of the second part is smaller than the winding width when the adjacent turn does not form the second part.

[0020] In some embodiments, the inductor winding column is integrally formed with the first magnetic cover and / or the second magnetic cover, or the inductor winding column is separately formed with the first magnetic cover and / or the second magnetic cover and then assembled.

[0021] It can be seen from the above technical solution that the utility model has at least one of the following advantages and positive effects:

[0022] The magnetic integrated structure of the utility model arranges the transformer winding post and the inductor winding post on the magnetic cover, and winds part of the turns of the multi-turn winding on the transformer winding post and the inductor winding post at the same time, thereby adjusting part of the area of ​​part of the winding to achieve the required inductance without increasing the volume of the original structure.

[0023] At the same time, since the windings on the outside of each turn of the primary winding and the secondary winding are easier to dissipate heat, the width of the primary winding and the secondary winding can be partially sacrificed, and some turns of the multi-turn winding can be wound on the transformer winding post and the inductor winding post at the same time. The change in winding loss is very small, and the effect of the inductor winding post on the core loss is also very small, and the required inductance can be achieved without increasing the original structure and volume. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] By reading the detailed description below with reference to the accompanying drawings, the above and other purposes, features and advantages of the exemplary embodiments of the present invention will become easy to understand. In the accompanying drawings, several embodiments of the present invention are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0025] Figure 1 A schematic diagram of a magnetic core according to an embodiment of the utility model is shown;

[0026] Figure 2 The utility model embodiment is shown Figure 1 A top view of

[0027] Figure 3 A schematic diagram of a magnetic core according to an embodiment of the utility model is shown;

[0028] Figure 4 An exploded schematic diagram of a magnetic core and a winding according to an embodiment of the utility model is shown;

[0029] Figure 5 The utility model embodiment is shown Figure 4 A schematic diagram of a top view and a side view placed together;

[0030] Figure 6 An exploded schematic diagram of a magnetic core and a winding according to an embodiment of the utility model is shown;

[0031] Figure 7 An exploded schematic diagram of a magnetic core and a winding according to an embodiment of the utility model is shown;

[0032] Figure 8 The utility model embodiment is shown Figure 7 A schematic diagram of a top view and a side view placed together;

[0033] Fig. 9 A schematic diagram of a magnetic core according to an embodiment of the utility model is shown;

[0034] Fig.10 A schematic diagram of a magnetic core according to an embodiment of the utility model is shown.

[0035] Reference numerals:

[0036] 1. Magnetic core; 11. First magnetic cover; 111. First side; 112. Second side; 113. Third side; 114. Fourth side; 12. Second magnetic cover; 13. Side column; 13A. First end; 13B. Second end; 131. Through channel; 132. First side column; 1321. First through channel; 1322. First gap; 1323. Second gap; 133. Second side column; 1331. Second through channel; 14. Transformer winding column; 15. Inductor winding column; 151. First inductor winding column; 152. Second inductor winding column; S. Main area; X. First direction; Y. Second direction; D. Radial direction; Z. Axial direction;

[0037] 2. Winding; 21. Primary winding; 211. Common turns; 212. Adjacent turns; 22. Secondary winding; 23. First opening; 24. Second opening; 231. First part; 232. Second part. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0039] It should be understood that the terms "include" and "comprises" used in the description and claims of the present invention indicate the presence of described features, wholes, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or collections thereof.

[0040] It should also be understood that the terms used in this utility model specification are only for the purpose of describing specific embodiments, and are not intended to limit the utility model. As used in the utility model specification and claims, the singular forms of "a", "an" and "the" are intended to include plural forms unless the context clearly indicates otherwise. It should also be further understood that the term "and / or" used in the utility model specification and claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes these combinations.

[0041] As used in this specification and claims, the term "if" may be interpreted as "when" or "upon" or "in response to determining" or "in response to detecting," depending on the context. Similarly, the phrase "if it is determined" or "if [described condition or event] is detected" may be interpreted as meaning "upon determination" or "in response to determining" or "upon detection of [described condition or event]" or "in response to detecting [described condition or event]," depending on the context.

[0042] It should be noted that the terms "first", "second", "third", "fourth", etc. referred to in this application are only used as reference terms to distinguish different features, and do not constitute limitations on specific structures or specific names. For example, in different embodiments of this application, "first", "second", "third", and "fourth" may refer to different features.

[0043] The specific implementation of the utility model is described in detail below with reference to the accompanying drawings.

[0044] like Figures 1 to 10As shown, the embodiment of the utility model provides a magnetic integration structure. The magnetic integration structure includes a magnetic core 1 and a winding 2. The magnetic core 1 includes a first magnetic cover 11, a second magnetic cover 12, a side column 13, a transformer winding column 14 and an inductor winding column 15, wherein the first magnetic cover 11 and / or the second magnetic cover 12 include a first side 111 and a second side 112 arranged oppositely along a first direction X, and a third side 113 and a fourth side 114 arranged oppositely along a second direction Y, and the side column 13 is arranged on at least one side of the first side 111, the second side 112, the third side 113 and the fourth side 114 of the first magnetic cover 11 and / or the second magnetic cover 12. In some embodiments of the present application, the side column 13 is arranged on the first side 111 of the first magnetic cover 11 and / or the second magnetic cover 12, that is, the side column 13 can be arranged alone on the first side 111 of the first magnetic cover 11 or the first side 111 of the second magnetic cover 12, or can be arranged on the first side 111 of the first magnetic cover 11 and the first side 111 of the second magnetic cover 12 at the same time. For example Figures 1 to 3 As shown, the side pillars 13 are only arranged on the side edges of the second magnetic cover 12, such as the first side edge 111 and the second side edge 112. As in other embodiments of the present case, the side pillars 13 can be arranged on the side edges of the first magnetic cover 11 and the second magnetic cover 12 at the same time. In this case, the side pillars 13 on one side of the magnetic core 1 are composed of the side pillars 13 on the first magnetic cover 11 and the second magnetic cover 12 at the same side.

[0045] It should be noted that the first direction X is different from the second direction Y. In some embodiments of the present application, the first direction X is perpendicular to the second direction Y.

[0046] Please refer to Figures 1 to 10 , along the second direction Y, the side column 13 includes a first end 13A and a second end 13B that are oppositely disposed, along the first direction X, the area directly opposite the first side edge 111 constitutes a main body area S, and along the second direction Y, the main body area S does not exceed the first end 13A and the second end 13B. Figure 2 As shown, the main area S is the area shown in the dotted box. It should be noted that Figure 2In the illustrated embodiment, the main body region S is actually the region enclosed by the first side 111, the second side 112, the third side 113 and the fourth side 114. To prevent overlapping of lines, the dotted frame is drawn outside the first side 111, the second side 112, the third side 113 and the fourth side 114. The transformer winding post 14 and the inductor winding post 15 are both arranged in the main body region S of the first magnetic cover 11 and / or the second magnetic cover 12. The side post 13, the transformer winding post 14 and the inductor winding post 15 are connected between the first magnetic cover 11 and the second magnetic cover 12. The winding 2 is wound on the transformer winding post 14, wherein the winding 2 includes multiple turns, and some of the turns of the multiple turns of the winding 2 are simultaneously wound on the transformer winding post 14 and the inductor winding post 15. It should be noted that the number of turns of the winding refers to the number of turns of the winding around the magnetic core. When the winding 2 is a single-layer winding, some of the turns of the winding 2 are simultaneously wound on the transformer winding pole 14 and the inductor winding pole 15. When the winding 2 is a multi-layer winding, some of the turns of the single-layer winding in the multi-winding can be simultaneously wound on the transformer winding pole 14 and the inductor winding pole 15, or some of the turns of the multiple turns of each layer of the multi-layer winding can be simultaneously wound on the transformer winding pole 14 and the inductor winding pole 15.

[0047] Specifically, a transformer winding post 14 is fixed on the first magnetic cover 11 and / or the second magnetic cover 12. Preferably, the transformer winding post 14 is located in the middle of the first magnetic cover 11 and / or the second magnetic cover 12. Similar to the arrangement of the side post 13, the transformer winding post 14 can be arranged on the first magnetic cover 11 or the second magnetic cover 12 alone, or on both the first magnetic cover 11 and the second magnetic cover 12. For example Figures 1 to 3 As shown, the transformer winding post 14 is only disposed on the second magnetic cover 12. In other embodiments of the present case, the transformer winding post 14 can be disposed on the first magnetic cover 11 and the second magnetic cover 12 at the same time. In this case, the transformer winding post 14 on one side of the magnetic core 1 is composed of the transformer winding posts 14 on the first magnetic cover 11 and the second magnetic cover 12 on the same side.

[0048] In some embodiments of the present invention, the transformer winding column 14 may be a cylindrical structure. The first magnetic cover 11 and the second magnetic cover 12 may both be plate-like structures. The inductor winding column 15 is preferably a vertical rectangular parallelepiped structure to save space. In order to increase the volume of the magnetic core 1, a plane section is formed along the plane parallel to the first direction X and the second direction Y, that is, Figure 2In the cross section parallel to the main body area S, the cross-sectional area of ​​the transformer winding post 14 is at least twice the cross-sectional area of ​​the inductor winding post 15, so that the inductor winding post 15 can be arranged in the original space of the magnetic core 1 without increasing the volume of the magnetic core 1, thereby achieving a higher degree of integration. In order to further improve the degree of integration, in some embodiments of the present case, the cross-sectional area of ​​the transformer winding post 14 is at least five times the cross-sectional area of ​​the inductor winding post 15. In some other embodiments of the present case, the cross-sectional area of ​​the transformer winding post 14 is at least ten times the cross-sectional area of ​​the inductor winding post 15.

[0049] In some embodiments of the present case, the number of the side pole 13 is at least one, so that the side pole 13 can form a magnetic circuit with the magnetic flux generated by the winding 2. The winding 2 is a multi-turn winding, and all of its turns are wound on the transformer winding pole 14. Among them, some turns of the winding 2 are also wound on the inductor winding pole 15 at the same time, so as to make full use of the space of the winding 2 itself, and the required inductance is obtained by adjusting part of the winding 2 to be wound on the inductor winding pole 15. Figures 4 to 6 As shown, in some embodiments of the present case, the outermost turn of the multiple turns of the primary winding 21 is simultaneously wound on the transformer winding post 14 and the inductor winding post 15. It can be understood that, according to the inductance requirements and design needs, two or more turns can be simultaneously wound on the transformer winding post 14 and the inductor winding post 15, or one or more turns of the secondary winding 22 can be simultaneously wound on the transformer winding post 14 and the inductor winding post 15. Among them, considering not increasing the volume of the original structure, the number of turns of the winding 2 that are simultaneously wound on the transformer winding post 14 and the inductor winding post 15 is not all the turns of the winding 2, but a part of them.

[0050] like Figures 1 to 8 As shown, in a preferred embodiment, the inductor winding post 15 is disposed between the side post 13 and the transformer winding post 14 , and the through channel 131 is disposed between the first end 13A and the second end 13B of the side post 13 .

[0051] Specifically, the size of the inductor winding post 15 is adapted to the space between the side post 13 and the transformer winding post 14, so as to make full use of the original space of the magnetic integrated structure without adding additional space to place the inductor winding post 15. The inductor winding post 15 can be integrally formed with the first magnetic cover 11 and / or the second magnetic cover 12. In some other embodiments of the present case, the inductor winding post 15 can be separately formed from the first magnetic cover 11 and / or the second magnetic cover 12, that is, the inductor winding post 15 can also be made separately and then assembled onto the first magnetic cover 11 and / or the second magnetic cover 12.

[0052] like Figure 1 and Figure 2As shown, in a preferred embodiment, the side column 13 is provided with a through channel 131, the inductor winding column 15 is arranged close to the through channel 131, at least a portion of the winding 2 wound around the inductor winding column 15 is arranged in the through channel 131, and along the second direction Y, the length d1 of the through channel 131 is greater than the length d2 of the inductor winding column 15.

[0053] Specifically, in order to further improve the integration level, when the size of the inductor winding post 15 is relatively large, the area of ​​the side post 13 can be appropriately reduced to provide space for the winding 2 wound on the inductor winding post 15. A through channel 131 is preferably formed in the middle of the side post 13. The inductor winding post 15 is close to the through channel 131, and part of the winding 2 wound on the inductor winding post 15 is located in the through channel 131. The volume of the part of the winding 2 placed in the through channel 131 is offset, that is, it is still arranged in the original structural space, which reduces the increase in the space occupied by the inductor winding post 15 due to the volume of the winding 2 wound on the inductor winding post 15, thereby improving the space utilization rate of the magnetic integrated structure. Figure 1-8 As shown, the through channel 131 is disposed in the middle of the side column 13. In some other embodiments of the present application, such as Fig. 9 and Fig.10 As shown, the through channel 131 can also be disposed at the first end 13A or the second end 13B of the side column 13. The inductor winding post 15 is disposed close to the through channel 131, and at least a portion of the winding 2 wound around the inductor winding post 15 is disposed in the through channel 131. Along the second direction Y, the length d1 of the through channel 131 is greater than the length d2 of the inductor winding post 15.

[0054] In contrast, if the through channel 131 is not provided, the volume of the inductor winding post 15 will increase, and the space between the side post 13 and the transformer winding post 14 will increase accordingly.

[0055] like Figures 1 to 3 As shown, in a preferred embodiment, the side column 13 includes a first side column 132 and a second side column 133, and the first side column 132 and the second side column 133 are respectively arranged on the first side 111 and the second side 112, or the first side column 132 and the second side column 133 are respectively arranged on the third side 113 and the fourth side 114.

[0056] Specifically, there are preferably two side columns 13, and the first side column 132 and the second side column 133 are symmetrically arranged on both sides of the first magnetic cover 11 and / or the second magnetic cover 12 relative to the transformer winding column 14. The two side columns 13 are used to generate two magnetic circuits, which is conducive to reducing the thickness of the first magnetic cover 11 and / or the second magnetic cover 12.

[0057] like Figure 3-Figure 8As shown, in a preferred embodiment, the first side column 132 is provided with a first through channel 1321, the second side column 133 is provided with a second through channel 1331, the inductor winding column 15 includes a first inductor winding column 151 and a second inductor winding column 152, at least a portion of the winding 2 wound on the first inductor winding column 151 is provided in the first through channel 1321, and at least a portion of the winding 2 wound on the second inductor winding column 152 is provided in the second through channel 1331.

[0058] Specifically, two inductor winding posts 15 are arranged on the magnetic cover, and the volume of the inductor winding posts 15 themselves has a more obvious effect on the integration. Two side posts 13 are arranged on both sides of the magnetic cover, namely a first side post 132 and a second side post 133. The first side post 132 has a first through channel 1321 so that a portion of the winding 2 wound on the first inductor winding post 151 is arranged therein, and the second side post 133 has a second through channel 1331 so that a portion of the winding 2 wound on the second inductor winding post 152 is arranged therein. Such an arrangement can make the offsetting effect of the first through channel 1321 and the second through channel 1331 more obvious, thereby better improving the space utilization rate of the magnetic integrated structure.

[0059] In a preferred embodiment, a first gap 1322 and a second gap 1323 are formed between the first side column 132 and the second side column 133, and the inductor winding column 15 is disposed in the first gap 1322 and / or the second gap 1323. Fig. 9 As shown, when the through channel 131 is disposed at the first end 13A of the first side column 132, because the inductor winding column 15 is disposed close to the through channel 131, the inductor winding column 15 is disposed in the first gap 1322 formed between the first side column 132 and the second side column 133. In other embodiments, the inductor winding column 15 is disposed in the second gap 1323 formed between the first side column 132 and the second side column 133.

[0060] Specifically, according to the above introduction, the inductor winding post 15 can be arranged in the space between the side post 13 and the transformer winding post 14. In addition, the inductor winding post 15 can also be arranged between the first side post 132 and the second side post 133, that is, the first gap 1322 and / or the second gap 1323. The first gap 1322 and / or the second gap 1323 have the same function as the previous through channel 131, so it can also improve the integration and improve the space utilization of the magnetic integrated structure.

[0061] like Figures 4 to 8 As shown, in a preferred embodiment, the winding 2 includes a primary winding 21 and a secondary winding 22, and the primary winding 21 and the secondary winding 22 are wound on the transformer winding pole 14 to form a transformer.

[0062] Specifically, the primary winding 21 may be one layer or multiple layers, and each layer may be one turn or multiple turns. The secondary winding 22 may also be one layer or multiple layers, and each layer may be one turn or multiple turns.

[0063] like Figures 4 to 8 As shown, in a preferred embodiment, the primary winding 21 includes multiple turns, and some of the multiple turns of the primary winding 21 are simultaneously wound around the transformer winding post 14 and the inductor winding post 15 .

[0064] Specifically, the primary winding 21 is a multi-turn winding. All turns are wound on the transformer winding post 14. Some turns are also wound on the inductor winding post 15, so that the space of the primary winding 21 itself can be fully utilized, and the required inductance can be obtained by adjusting part of the primary winding 21 to be wound on the inductor winding post 15.

[0065] like Figures 4 to 8 As shown, in a preferred embodiment, the secondary winding 22 includes multiple turns, and some of the multiple turns of the secondary winding 22 are wound around the transformer winding post 14 and the inductor winding post 15 at the same time.

[0066] Specifically, the secondary winding 22 is a multi-turn winding. All turns are wound on the transformer winding post 14. Some turns are also wound on the inductor winding post 15, so that the space of the secondary winding 22 itself can be fully utilized, and the required inductance can be obtained by adjusting part of the secondary winding 22 to be wound on the inductor winding post 15.

[0067] like Figures 4 to 6 As shown, in a preferred embodiment, the winding 2 is a PCB winding, wherein the PCB winding includes multiple layers along the axial direction Z of the transformer winding post 14, that is, multiple PCB windings are stacked and arranged along the axial direction Z of the transformer winding post 14. Among them, at least one layer of PCB winding includes multiple turns along the radial direction D of the transformer winding post 14, and some of the multiple turns of the PCB winding are simultaneously wound around the transformer winding post 14 and the inductor winding post 15.

[0068] Specifically, Figure 5 As shown, the D direction in the figure represents the radial direction, and the Z direction represents the axial direction. It can be understood that the first direction X and the second direction Y are both radial directions of the transformer winding post 14. The winding 2 can be a PCB winding, but the present application is not limited to this. Each layer of PCB winding is wound around the transformer winding post 14 along the axial direction Z. All turns in at least one layer of the PCB winding are wound around the transformer winding post 14, and some turns are also wound around the inductor winding post 15 at the same time. In this way, the space of the PCB winding itself can be fully utilized, and the required inductance can be achieved by adjusting part of the area of ​​part of the PCB winding to be wound around the inductor winding post 15.

[0069] like Figures 7 and 8As shown, in a preferred embodiment, the winding 2 is a wire, wherein the wire includes multiple layers along the radial direction D of the transformer winding post 14, that is, multiple wires are wrapped and arranged along the radial direction D of the transformer winding post 14. Among them, at least one layer of wire includes multiple turns along the axial direction Z of the transformer winding post 14, and some of the turns of the wire are simultaneously wound on the transformer winding post 14 and the inductor winding post 15. The winding 2 is a wire, wherein the wire includes multiple layers along the axial direction Z of the transformer winding post 14, wherein at least one layer of wire includes multiple turns along the radial direction D of the transformer winding post 14, and some of the turns of the wire are simultaneously wound on the transformer winding post 14 and the inductor winding post 15.

[0070] Specifically, Figure 8 As shown in the figure, the D direction represents the radial direction, and the Z direction represents the axial direction. The winding 2 can be a wire, and the wire is preferably a copper wire, but the present application is not limited thereto. Each layer of wire is wound around the transformer winding post 14 along the axial direction Z. All turns in at least one layer of the wire are wound around the transformer winding post 14, and some turns are wound around the inductor winding post 15 at the same time. In this way, the space of the wire itself can be fully utilized, and the required inductance can be obtained by adjusting some areas of some wires to be wound around the inductor winding post 15.

[0071] like Figures 4 to 6 As shown, in a preferred embodiment, a first opening 23 is formed between partial turns of the PCB winding, and the inductor winding post 15 passes through the first opening 23 .

[0072] Specifically, in addition to being wound on the inductor winding post 15 as described above, the PCB winding may also open a first opening 23 in a portion of turns of at least one layer of the PCB winding, and then be sleeved on the inductor winding post 15 through the first opening 23 to obtain the required inductance. The PCB winding includes a common turn 211 and an adjacent turn 212, the common turn 211 includes the partial turns wound on the transformer winding post 14 and the inductor winding post 15 at the same time, the adjacent turn 212 is adjacent to the common turn 211, wherein a first opening 23 is formed between the adjacent turn 212 and the common turn 211, and the inductor winding post 15 passes through the first opening 23. The first opening 23 includes a first portion 231 and a second portion 232, wherein the first portion 231 is formed by a portion of the common turn 211, and the second portion 232 is formed by a portion of the adjacent turn 212, wherein the winding width of the first portion 231 is smaller than the winding width of the common turn 211 not forming the first portion 231, and the winding width of the second portion 232 is smaller than the winding width of the adjacent turn 212 not forming the second portion 232. Figure 6As shown, the portion of the outermost turn of the primary winding 21 that forms the first opening 23 is the first portion 231, and the width of this portion of the winding along the radial direction D is narrower than other portions of the turn winding. The adjacent turn 212 is a winding adjacent to the common turn 211 that forms the first portion 231, and the portion of the adjacent turn 212 that forms the first opening 23 is the second portion 232, and the width of this portion of the winding along the radial direction D is narrower than other portions of the turn winding.

[0073] In a specific embodiment, the magnetic integrated structure includes a magnetic core 1 and a PCB winding. Each layer of the PCB winding is wound in the winding area along the radial direction D of the transformer winding column 14 located in the middle of the magnetic cover. Among them, the primary winding 21 has n layers, and n>=1, n is a natural number, and at least one layer has a number of turns greater than or equal to 2. The number of layers of the secondary winding 22 is m layers, and m>=1, m is a natural number, and the first opening 23 is formed between the partial turns of at least one layer of the number of layers of which the number of turns of the primary winding 21 is greater than or equal to 2. Alternatively, the primary winding 21 has n layers, and n>=1, n is a natural number. The number of layers of the secondary winding 22 is m layers, and m>=1, m is a natural number, and at least one layer has a number of turns greater than or equal to 2, and the first opening 23 is formed between the partial turns of at least one layer of the number of layers of which the number of turns of the secondary winding 22 is greater than or equal to 2. The inductor winding column 15 is passed through the first opening 23 to form the required inductance.

[0074] like Figure 6 The first part 231 and the second part 232 shown in the figure utilize the primary winding 21 and / or the secondary winding 22 to partially sacrifice the winding width to form the first opening 23. The loss of the primary winding 21 and / or the secondary winding 22 changes very little, and the added inductor winding column 15 also has little effect on the core loss.

[0075] like Figures 7 and 8 As shown, in a preferred embodiment, the wire is wound on the frame, and a second opening 24 is formed between partial turns of the wire, and the inductor winding post 15 passes through the second opening 24 .

[0076] Specifically, in addition to being wound around the inductor winding post 15 as described above, the wire may also be provided with a second opening 24 in a portion of the turns of at least one layer of the wire, and then be sleeved on the inductor winding post 15 through the second opening 24 to obtain the required inductance. The wire includes common turns and adjacent turns, the wire is wound around the frame, the common turns include partial turns wound around the transformer winding post 14 and the inductor winding post 15 at the same time, the adjacent turns are adjacent to the common turns, wherein a second opening 24 is formed between the adjacent turns and the common turns, and the inductor winding post 15 passes through the second opening 24.

[0077] In a specific embodiment, the magnetic integrated structure includes a magnetic core 1 and a conductor. Each layer of the conductor coil is wound in the winding area along the axial direction Z of the transformer winding column 14 located in the middle of the magnetic cover. Among them, the primary winding 21 is n layers, and n>=1, wherein at least one layer has a number of turns greater than or equal to 2. The secondary winding 22 is m layers, and m>=1. A second opening 24 is formed between some turns of at least one layer of the primary winding 21 with a number of turns greater than or equal to 2. Alternatively, the primary winding 21 is n layers, and n>=1. The secondary winding 22 is m layers, and m>=1, wherein at least one layer has a number of turns greater than or equal to 2. A second opening 24 is formed between some turns of at least one layer of the secondary winding 22 with a number of turns greater than or equal to 2. The inductor winding column 15 is passed through the second opening 24 to form the required inductance. At this time, each layer of the conductor is an inner and outer sheathed structure along the radial direction D.

[0078] In other embodiments, the magnetic integrated structure includes a magnetic core 1 and a conductor. Each layer of the conductor coil is wound in the winding area along the radial direction D of the transformer winding column 14 located in the middle of the magnetic cover. Among them, the primary winding 21 is n layers, and n>=1, wherein at least one layer has a number of turns greater than or equal to 2. The secondary winding 22 is m layers, and m>=1. A second opening 24 is formed between some turns and turns of at least one layer of the primary winding 21 with a number of turns greater than or equal to 2. Alternatively, the primary winding 21 is n layers, and n>=1. The secondary winding 22 is m layers, and m>=1, wherein at least one layer has a number of turns greater than or equal to 2. A second opening 24 is formed between some turns and turns of at least one layer of the secondary winding 22 with a number of turns greater than or equal to 2. The inductor winding column 15 is passed through the second opening 24 to form the required inductance. At this time, each layer of the conductor is a stacked structure along the axial direction Z.

[0079] The number of the inductor winding posts 15 can be one or more to achieve the required inductance. The number, size and position of the inductor winding posts 15 are determined according to the required inductance and the available space for winding the winding wire in the body. Therefore, the shape, size and number of the inductor winding posts 15 are not fixed, and the available space can form a through hole to place the inductor winding posts 15 therein. At the same time, the size and shape of the inductor winding posts 15 can also be designed in combination with heat dissipation, current flow conditions, etc. to ensure the stable performance of the winding.

[0080] The magnetic integrated structure of the utility model arranges the transformer winding post 14 and the inductor winding post 15 on the magnetic cover, and winds part of the turns of the multi-turn winding on the transformer winding post 14 and the inductor winding post 15 at the same time, thereby adjusting part of the area of ​​part of the winding to achieve the required inductance without increasing the volume of the original structure.

[0081] Furthermore, in some embodiments, the width of the primary winding 21 and / or the secondary winding 22 can be partially sacrificed, and some turns of the multi-turn winding can be wound on the transformer winding post 14 and the inductor winding post 15 at the same time, so that the required inductance can be achieved with very little change in winding loss and very little effect of the inductor winding post 15 on the core loss, but without increasing the volume of the original structure.

[0082] Although multiple embodiments of the utility model have been shown and described herein, it is obvious to those skilled in the art that such embodiments are provided by way of example only. Those skilled in the art may think of many changes, modifications and alternatives without departing from the idea and spirit of the utility model. It should be understood that in the process of practicing the utility model, various alternatives to the embodiments of the utility model described herein may be adopted. The attached claims are intended to define the scope of protection of the utility model, and therefore cover equivalents or alternatives within the scope of these claims.

Claims

1. A magnetic integrated structure, characterized in that: include: Magnetic cores and windings; The magnetic core comprises a first magnetic cover, a second magnetic cover, a side column, a transformer winding column and an inductor winding column, wherein the first magnetic cover and the second magnetic cover comprise a first side edge and a second side edge which are arranged oppositely along a first direction, and a third side edge and a fourth side edge which are arranged oppositely along a second direction, the side column is arranged on the first side edge of the first magnetic cover and / or the second magnetic cover, and along the second direction, the side column comprises a first end and a second end which are arranged oppositely, the transformer winding column and the inductor winding column are both arranged on the first magnetic cover and / or the second magnetic cover, and the side column, the transformer winding column and the inductor winding column are ... The transformer winding post and the inductor winding post are connected between the first magnetic cover and the second magnetic cover, the first direction is different from the second direction, and the cross-section of the plane formed along the plane parallel to the first direction and the second direction, the cross-sectional area of ​​the transformer winding post is at least five times the cross-sectional area of ​​the inductor winding post, the side post is provided with a through channel, the inductor winding post is arranged close to the through channel, at least part of the winding wound on the inductor winding post is arranged in the through channel, and along the second direction, the length of the through channel is greater than the length of the inductor winding post; and The winding is wound on the transformer winding post, wherein the winding includes multiple turns, and some of the multiple turns of the winding are simultaneously wound on the transformer winding post and the inductor winding post.

2. The magnetic integrated structure according to claim 1, characterized in that: Along the first direction, the area directly opposite to the first side constitutes a main body area, and along the second direction, the main body area does not exceed the first end and the second end, and the transformer winding post and the inductor winding post are both arranged in the main body area.

3. The magnetic integrated structure according to claim 2, characterized in that: The inductor winding column is arranged between the side column and the transformer winding column, and the through channel is arranged between the first end and the second end of the side column.

4. The magnetic integrated structure according to claim 1, characterized in that: The through passage is arranged at the first end and / or the second end of the side column.

5. The magnetic integrated structure according to claim 1, characterized in that: The side columns include a first side column and a second side column, and the first side column and the second side column are respectively arranged on the first side edge and the second side edge.

6. The magnetic integrated structure according to claim 5, characterized in that: The first side column is provided with a first through channel, the second side column is provided with a second through channel, the inductor winding column includes a first inductor winding column and a second inductor winding column, at least a portion of the winding wound around the first inductor winding column is provided in the first through channel, and at least a portion of the winding wound around the second inductor winding column is provided in the second through channel.

7. The magnetic integrated structure according to claim 5, characterized in that: A first gap and a second gap are formed between the first side column and the second side column, and the inductor winding column is arranged in the first gap and / or the second gap.

8. The magnetic integrated structure according to claim 1, characterized in that: The winding includes a primary winding and a secondary winding, the primary winding and the secondary winding are wound on the transformer winding post to form a transformer, the primary winding includes multiple turns, and some of the multiple turns of the primary winding are simultaneously wound on the transformer winding post and the inductor winding post.

9. The magnetic integrated structure according to claim 1, characterized in that: The winding includes a primary winding and a secondary winding, the primary winding and the secondary winding are wound on the transformer winding post to form a transformer, the secondary winding includes multiple turns, and some of the multiple turns of the secondary winding are simultaneously wound on the transformer winding post and the inductor winding post.

10. The magnetic integrated structure according to claim 1, characterized in that: The winding is a PCB winding, wherein the PCB winding includes multiple layers along the axial direction of the transformer winding post, wherein at least one layer of the PCB winding includes multiple turns along the radial direction of the transformer winding post, and some of the multiple turns of at least one layer of the PCB winding are simultaneously wound around the transformer winding post and the inductor winding post.

11. The magnetic integrated structure according to claim 1, characterized in that: The winding is a conductive wire, wherein the conductive wire comprises multiple layers along the radial direction of the transformer winding post, wherein at least one layer of the conductive wire comprises multiple turns along the axial direction of the transformer winding post, and some of the multiple turns of at least one layer of the conductive wire are simultaneously wound around the transformer winding post and the inductor winding post.

12. The magnetic integrated structure according to claim 1, characterized in that: The winding is a conductive wire, wherein the conductive wire comprises multiple layers along the axial direction of the transformer winding post, wherein at least one layer of the conductive wire comprises multiple turns along the radial direction of the transformer winding post, and some of the multiple turns of at least one layer of the conductive wire are simultaneously wound around the transformer winding post and the inductor winding post.

13. The magnetic integrated structure according to claim 10, characterized in that: The PCB winding includes common turns and adjacent turns, the common turns include partial turns that are simultaneously wound around the transformer winding post and the inductor winding post, the adjacent turns are adjacent to the common turns, wherein a first opening is formed between the adjacent turns and the common turns, and the inductor winding post passes through the first opening.

14. The magnetic integrated structure according to claim 11 or 12, characterized in that: The conductor includes common turns and adjacent turns, and the conductor is wound on a frame. The common turns include partial turns that are simultaneously wound on the transformer winding post and the inductor winding post, and the adjacent turns are adjacent to the common turns, wherein a second opening is formed between the adjacent turns and the common turns, and the inductor winding post passes through the second opening.

15. The magnetic integrated structure according to claim 13, characterized in that: The first opening includes a first part and a second part, the first part is formed by a part of the common turn, and the second part is formed by a part of the adjacent turn, wherein the winding width of the first part is smaller than the winding width when the common turn does not form the first part, and the winding width of the second part is smaller than the winding width when the adjacent turn does not form the second part.

16. The magnetic integrated structure according to claim 1, characterized in that: The inductor winding column is integrally formed with the first magnetic cover and / or the second magnetic cover, or the inductor winding column is separately formed with the first magnetic cover and / or the second magnetic cover and then assembled.

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