Core structure

Abstract

The present application discloses a magnetic core structure including: a bottom plate, two magnetic columns, a side wall and a cover plate. The two magnetic columns are arranged on the bottom plate. The side wall includes a first side wall portion, a second side wall portion and a third side wall portion, the first side wall portion and the second side wall portion are arranged on both sides of the bottom plate along the arrangement direction of the two magnetic columns, the third side wall portion is located between the two magnetic columns, and the third side wall portion is respectively connected to the first side wall portion and the second side wall portion. The cover plate is arranged on the side wall, and the cover plate covers the two magnetic columns. In addition, a magnetic core structure is provided, the difference of which includes: the side wall includes a first side wall portion and a second side wall portion, the first side wall portion is arranged on the side edge of the bottom plate along the arrangement direction of the two magnetic columns, the first side wall portion extends along the outer side of the two magnetic columns and turns to the adjacent side edge, and one end of the second side edge extends from the first side wall portion to between the two magnetic columns.

Description

Technical Field

[0001] The present application relates to the technical field of magnetic cores, and in particular to a magnetic core structure. Background Art

[0002] Currently on the market, a magnetic core is a piece of magnetic material with high magnetic permeability, which can be used to limit and guide the magnetic field in electromechanical and magnetic devices. It is made of ferromagnetic metal or ferrimagnetic compounds. Among them, although the magnetic core can increase the magnetic field strength of the electromagnetic coil, the magnetic core also has the disadvantage of causing energy loss (core loss). Furthermore, the magnetic core and the coil will generate heat during the interaction process, and the heat dissipation effect of the magnetic core is poor, which will make the core loss situation more serious. Summary of the invention

[0003] An embodiment of the present application provides a magnetic core structure, which solves the problem of severe core loss of the magnetic core structure through the structural design of the magnetic core structure.

[0004] In order to solve the above technical problems, this application is implemented as follows:

[0005] The first aspect provides a magnetic core structure, comprising: a bottom plate, two magnetic columns, a side wall and a cover plate. The two magnetic columns are arranged on the bottom plate; the side wall comprises a first side wall portion, a second side wall portion and a third side wall portion, the first side wall portion and the second side wall portion are arranged on both sides of the bottom plate along the arrangement direction of the two magnetic columns, the third side wall portion is located between the two magnetic columns, and the third side wall portion is respectively connected to the first side wall portion and the second side wall portion; and the cover plate is arranged on the side wall, and the cover plate covers the two magnetic columns.

[0006] In one embodiment, the base plate has a first long side, a second long side, a first short side and a second short side, the first long side and the second long side correspond to each other, the first short side and the second short side are arranged between the first long side and the second long side, the first side wall portion is arranged on the first long side, and the second side wall portion is arranged on the second long side.

[0007] In one embodiment, two ends of the first side wall portion extend along the first long side, and two ends of the first side wall portion extend to the first short side and the second short side, respectively, and two ends of the second side wall portion extend along the second long side.

[0008] In one embodiment, the extension length of the two ends of the first side wall portion is within the range of the vertical projection of adjacent magnetic columns to the first short side and the second short side.

[0009] In one embodiment, the extension lengths of the two ends of the second side wall portion are within the range of the vertical projection of the two magnetic columns to the second long side.

[0010] In one embodiment, two first openings are respectively provided between the two ends of the first side wall portion and the two ends of the second side wall portion, and the two first openings are respectively located at the corners of the second long side and the first short side and the corners of the second long side and the second short side.

[0011] In one embodiment, two ends of the first side wall portion extend beyond the range of the vertical projection of the two magnetic columns to the first long side, and two ends of the second side wall portion extend beyond the range of the vertical projection of the two magnetic columns to the second long side.

[0012] In one embodiment, the extending lengths of both ends of the first side wall portion are the same as the extending lengths of both ends of the second side wall portion.

[0013] In one embodiment, two second openings are respectively provided between two ends of the first side wall portion and two ends of the second side wall portion, and the two second openings are respectively located at the first short side and the second short side.

[0014] In one embodiment, the first side wall portion has two openings, and the two openings correspond to the two magnetic pillars.

[0015] In one embodiment, the side wall has a corresponding arc wall surface adjacent to the cylindrical surfaces of the two magnetic columns, and a gap exists between the arc wall surface of the side wall and the cylindrical surfaces of the two magnetic columns.

[0016] In one embodiment, the device further includes two coils, which are sleeved on the two magnetic columns and are located in the gap.

[0017] The second aspect provides a magnetic core structure, including: a bottom plate, two magnetic columns, a side wall and a cover plate. The two magnetic columns are arranged on the bottom plate; the side wall includes a first side wall portion and a second side wall portion, the first side wall portion is arranged on the side of the bottom plate along the arrangement direction of the two magnetic columns, the first side wall portion extends along the outer side of the two magnetic columns and turns to the adjacent side, and one end of the second side edge extends from the first side wall portion to between the two magnetic columns; and the cover plate is arranged on the side wall, and the cover plate covers the two magnetic columns.

[0018] In one embodiment, the base plate has a first long side, a second long side, a first short side and a second short side, the first long side and the second long side correspond to each other, the first short side and the second short side are arranged between the first long side and the second long side, and the first side wall portion is arranged on the first long side, the first short side and the second short side.

[0019] In one embodiment, a third opening is provided between two ends of the first side wall portion, and the third opening is located at the second long side.

[0020] In one embodiment, the first side wall portion located on the first long side has two openings, and the two openings correspond to the two magnetic pillars.

[0021] In one embodiment, the first side wall portion and the second side wall portion have corresponding arc wall surfaces adjacent to the cylindrical surfaces of the two magnetic columns, and there is a gap between the arc wall surfaces of the first side wall portion and the second side wall portion and the cylindrical surfaces of the two magnetic columns.

[0022] In one embodiment, the device further includes two coils, which are sleeved on the two magnetic columns and are located in the gap.

[0023] The present application provides a magnetic core structure, which has a side wall structure relative to the structural design of two magnetic columns, two coils are wound around the two magnetic columns, and current flows through the two coils to generate a magnetic field. The side wall can improve the magnetic field of the coil, effectively reducing the overall loss of the coil caused by the magnetic core structure. Furthermore, the side wall design of the magnetic core structure is also conducive to air convection to dissipate heat from the magnetic column and the coil. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The exemplary implementation methods and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0025] Figure 1 is a three-dimensional diagram of a magnetic core structure of a first embodiment of the present application;

[0026] Figure 2 yes Figure 1 A cross-sectional view of the A-A' line;

[0027] Figure 3 is an exploded view of the magnetic core structure of the first embodiment of the present application;

[0028] Figure 4 is a three-dimensional diagram of a magnetic core structure of a second embodiment of the present application;

[0029] Figure 5 yes Figure 4 The cross-sectional view of the line B1-B1';

[0030] Figure 6 yes Figure 4 The cross-sectional view of the line B2-B2';

[0031] Figure 7 is an exploded view of a magnetic core structure of a third embodiment of the present application;

[0032] Figure 8 is an exploded view of a magnetic core structure of a fourth embodiment of the present application;

[0033] Fig. 9 is a three-dimensional diagram of a magnetic core structure of a fifth embodiment of the present application;

[0034] Fig.10 yes Fig. 9 A cross-sectional view of the C-C' line;

[0035] Fig.11 is an exploded view of a magnetic core structure of a fifth embodiment of the present application;

[0036] Fig.12 is a three-dimensional diagram of a magnetic core structure of a sixth embodiment of the present application;

[0037] Fig.13 yes Fig.12 The cross-sectional view of the D-D' line;

[0038] Fig.14 is an exploded view of a magnetic core structure of a seventh embodiment of the present application;

[0039] Fig.15 is an exploded view of a magnetic core structure of an eighth embodiment of the present application;

[0040] Fig.16 is a three-dimensional diagram of a magnetic core structure of a ninth embodiment of the present application;

[0041] Fig.17 yes Fig.16 A cross-sectional view of the line E-E';

[0042] Fig.18 is an exploded view of a magnetic core structure of a ninth embodiment of the present application;

[0043] Fig.19 is a three-dimensional diagram of a magnetic core structure of a tenth embodiment of the present application;

[0044] Fig. 20 yes Fig.19 The cross-sectional view of the F-F' line;

[0045] Fig.21 is an exploded view of the magnetic core structure of the eleventh embodiment of the present application; and

[0046] Fig. 22 It is an exploded view of the magnetic core structure of the twelfth embodiment of the present application. DETAILED DESCRIPTION

[0047] The following will disclose multiple embodiments of the present invention with drawings. For the purpose of clear description, many implementation details will be described together in the following description. However, it should be understood that these implementation details should not be used to limit the present invention. That is, in some embodiments of the present invention, these implementation details are not necessary. In addition, in order to simplify the drawings, some conventional structures and components will be illustrated in a simple schematic manner in the drawings. In the following embodiments, the same reference numerals will be used to represent the same or similar components.

[0048] See also Figures 1 to 3 , Figure 1 is a three-dimensional diagram of the magnetic core structure of the first embodiment of the present application, Figure 2 yes Figure 1 The cross-sectional view of the A-A' line is Figure 3 It is an exploded view of a magnetic core structure. As shown in the figure, the present application provides a magnetic core structure 1, which includes: a bottom plate 11, two magnetic columns 12, a side wall 13 and a cover plate 14. The two magnetic columns 12 are arranged on the bottom plate 11. The side wall 13 includes a first side wall portion 131, a second side wall portion 132 and a third side wall portion 133. The first side wall portion 131 and the second side wall portion 132 are arranged on both sides of the bottom plate 11 along the arrangement direction of the two magnetic columns 12. The third side wall portion 133 is located between the two magnetic columns 12, and the third side wall portion 133 is respectively connected to the first side wall portion 131 and the second side wall portion 132. The cover plate 14 is arranged on the side wall 13, and the cover plate 14 covers the two magnetic columns 12. The bottom plate 11, the two magnetic columns 12 and the side wall 13 can be an integrally formed structure, and the bottom plate 11 and the cover plate 14 have the same size.

[0049] In this embodiment, the bottom plate 11 has a first long side 111, a second long side 112, a first short side 113 and a second short side 114, the first long side 111 and the second long side 112 correspond to each other, the first short side 113 and the second short side 114 are arranged between the first long side 111 and the second long side 112, and the bottom plate 11 is a rectangular plate. The first side wall portion 131 is arranged on the first long side 111, and the second side wall portion 132 is arranged on the second long side 112. The two ends of the first side wall portion 131 extend along the first long side 111 respectively, and the two ends of the first side wall portion 131 extend and turn to the first short side 113 and the second short side 114 respectively, and the two ends of the second side wall portion 132 extend along the second long side 112 respectively. The two ends of the third side wall portion 133 extend and connect between the two magnetic columns 12 toward the first side wall portion 131 and the second side wall portion 132. The first side wall portion 131 , the second side wall portion 132 and the third side wall portion 133 are an integrally formed structure.

[0050] Furthermore, the extension length of the two ends of the first side wall portion 131 is within the range of the vertical projection of the adjacent magnetic columns 12 to the first short side 113 and the second short side 114. The extension length of the two ends of the second side wall portion 132 is within the range of the vertical projection of the two magnetic columns 12 to the second long side 112. From the structure of the magnetic core structure 1 of this embodiment, there are two first openings 101 between the two ends of the first side wall portion 131 and the two ends of the second side wall portion 132, and the two first openings 101 are respectively located at the corners where the second long side 112 and the first short side 113 are connected to each other and the corners where the second long side 112 and the second short side 114 are connected to each other. The first opening 101 exposes the corresponding positions of the two magnetic columns 12 to the outside.

[0051] In this embodiment, the side wall 13 has a corresponding arc wall surface 130 adjacent to the cylindrical surfaces 120 of the two magnetic columns 12, and the arc wall surface 130 of the side wall 13 is arranged corresponding to the contour of the cylindrical surfaces 120 of the magnetic columns 12, that is, there is a gap 1201 between the arc wall surface 130 of the side wall 13 and the cylindrical surfaces 120 of the two magnetic columns 12. In addition, the magnetic core structure 1 further includes two coils 15, which are wound around the two magnetic columns 12, and the two coils 15 are located in the gap 1201.

[0052] In this embodiment, the two coils 15 have two winding methods relative to the two magnetic columns 12. When the two coils 15 are wound in the same direction, the current flows through the two coils 15 in the same direction, and the current passes through the two coils 15 to generate a magnetic field, which will generate magnetic flux relative to the bottom plate 11, the magnetic column 12, the side wall 13 and the cover plate 14. The direction of the magnetic flux in the bottom plate 11 or the cover plate 14 will be opposite, thereby generating a magnetic flux cancellation effect, so that the iron loss in the bottom plate 11 or the cover plate 14 will be reduced. In addition, the direction of the magnetic flux in the side wall 13 is the same, thereby generating a magnetic flux superposition effect, so that the iron loss in the side wall 13 will increase.

[0053] When the two coils 15 are wound in opposite directions, the current flows in opposite directions through the two coils 15, and the current passes through the two coils 15 to generate a magnetic field, which generates magnetic flux relative to the bottom plate 11, the magnetic column 12, the side wall 13 and the cover plate 14. The magnetic flux directions in the bottom plate 11 or the cover plate 14 are the same, thereby generating a magnetic flux superposition effect, so that the iron loss in the bottom plate 11 or the cover plate 14 will increase. In addition, the magnetic flux directions in the side wall 13 are opposite, thereby generating a magnetic flux cancellation effect, so that the iron loss in the side wall 13 will decrease.

[0054] Please also read Figures 4 to 6 , Figure 4 is a three-dimensional diagram of a magnetic core structure according to a second embodiment of the present application. Figure 5 yes Figure 4 The cross-sectional view of the line B1-B1' and Figure 6 yes Figure 4 The cross-sectional view of the line B2-B2'. As shown in the figure, the difference between this embodiment and the first embodiment lies in the opening 1310. In this embodiment, the first side wall portion 131 of the side wall 13 has two openings 1310, and the two openings 1310 correspond to the two magnetic columns 12 and the coil 15 sleeved on the magnetic column 12. This embodiment changes the structure of the side wall 13 through the opening 1310, thereby changing the influence of the side wall 13 on the magnetic field of the coil 15. In this way, the magnetic field environment is changed so that the magnetic field of the coil 15 is cut by the magnetic flux, and the copper wire loss of the coil 15 is further effectively reduced. In addition, the magnetic core structure 1 has the opening 1310 to enhance the structure of air circulation through the magnetic column 12 and the coil 15, so as to improve the heat dissipation effect of the magnetic column 12 and the coil 15 of the magnetic core structure 1.

[0055] In this embodiment, the hole length L, hole width W and hole height H of each opening 1310 have a specific comparative relationship with the structural dimensions of the magnetic core structure 1. The numerical ranges of the hole length L, hole width W and hole height H can be adjusted according to the needs of the user, and the table description is as follows:

[0056]

[0057] See also Figure 7 , is an exploded view of the magnetic core structure of the third embodiment of the present application. As shown in the figure, the difference between this embodiment and the first embodiment lies in the assembly method of the structure. Each magnetic column 12 of the magnetic core structure 1 of this embodiment includes a lower magnetic column 12A and an upper magnetic column 12B corresponding to the lower magnetic column 12A, and the upper magnetic column 12B is stacked on the lower magnetic column 12A to form a complete magnetic column 12. In addition, the side wall 13 of the magnetic core structure 1 includes a lower side wall 13A and an upper side wall 13B corresponding to the lower side wall 13A, and the upper side wall 13B is stacked on the lower side wall 13A to form a complete side wall 13.

[0058] In this embodiment, the magnetic core structure 1 includes a bottom plate 11, two lower magnetic columns 12A, two upper magnetic columns 12B, a lower side wall 13A, an upper side wall 13B and a cover plate 14. The two lower magnetic columns 12A are arranged on the bottom plate 11, the lower side wall 13A is arranged on the bottom plate 11, and the side wall 13A is located on the circumference of the two lower magnetic columns 12A. The bottom plate 11, the two lower magnetic columns 12A and the lower side wall 13A are formed into a first magnetic core 1A in an integrated manner. The two upper magnetic columns 12B are arranged under the cover plate 14, the upper side wall 13B is arranged under the cover plate 14, and the upper side wall 13B is located on the circumference of the two upper magnetic columns 12B. The cover plate 14, the two upper magnetic columns 12B and the upper side wall 13B are formed into a second magnetic core 1B in an integrated manner. The first magnetic core 1A and the second magnetic core 1B have the same structure.

[0059] As mentioned above, after taking out the first magnetic core 1A, one end of the coil 15 of the magnetic core structure 1 is sleeved on the two lower magnetic columns 12A of the first magnetic core 1A, and then the two upper magnetic columns 12B and the upper side wall 13B of the second magnetic core 1B are stacked on the two lower magnetic columns 12A and the lower side wall 13A of the first magnetic core 1A, and at the same time, the other end of the coil 15 is also sleeved on the two upper magnetic columns 12B of the second magnetic core 1B, so as to form a complete magnetic core structure 1. In addition, the coil 15 can also be fixed to the stacked assembly of the first magnetic core 1A and the second magnetic core 1B.

[0060] See also Figure 8 , is an exploded view of the magnetic core structure of the fourth embodiment of the present application. As shown in the figure, the difference between this embodiment and the third embodiment lies in the opening 1310. In this embodiment, the first side wall portion 131A of the lower side wall 13A has a lower notch 1310A, and the first side wall portion 131B of the upper side wall 13B has an upper notch 1310B, the lower notch 1310A and the upper notch 1310B correspond to each other, and the opening 1310 is composed of the lower notch 1310A and the upper notch 1310B. The function of the opening 1310 of this embodiment is the same as that of the second embodiment, so it is not repeated.

[0061] See also Figures 9 to 11 , Fig. 9 is a three-dimensional diagram of a magnetic core structure according to a fifth embodiment of the present application. Fig.10 yes Fig. 9 The cross-sectional view of the C-C' line Fig.11 It is a decomposition diagram of the magnetic core structure. As shown in the figure, the difference between this embodiment and the first embodiment lies in the structure of the side wall 13. The two ends of the first side wall portion 131 extend respectively beyond the range of the vertical projection of the two magnetic columns 12 to the first long side 111, and the two ends of the second side wall portion 132 extend respectively beyond the range of the vertical projection of the two magnetic columns 12 to the second long side 112. The extension length of the two ends of the first side wall portion 131 is the same as the extension length of the two ends of the second side wall portion 132. In other words, there are two second openings 102 between the two ends of the first side wall portion 131 and the two ends of the second side wall portion 132, and the two second openings 102 are respectively located at the first short side 113 and the second short side 114, and the second openings 102 expose the corresponding positions of the two magnetic columns 12 to the outside.

[0062] See also Fig.12 and Fig.13 , Fig.12 is a three-dimensional diagram of a magnetic core structure of a sixth embodiment of the present application and Fig.13 yes Fig.12As shown in the figure, the difference between this embodiment and the fifth embodiment lies in the opening 1310. The first side wall portion 131 has two openings 1310, and the two openings 1310 correspond to the two magnetic columns 12 and the coils 15 wound around the two magnetic columns 12. The function of the opening 1310 of this embodiment is the same as that of the second embodiment, so it will not be repeated.

[0063] See also Fig.14 , is an exploded view of the magnetic core structure of the seventh embodiment of the present application. As shown in the figure, the difference between this embodiment and the fifth embodiment lies in the assembly method of the structure. Each magnetic column 12 of the magnetic core structure 1 of this embodiment includes a lower magnetic column 12A and an upper magnetic column (not shown) corresponding to the lower magnetic column 12A, and the upper magnetic column is stacked on the lower magnetic column 12A to form a complete magnetic column 12. In addition, the side wall 13 of the magnetic core structure 1 includes a lower side wall 13A and an upper side wall 13B corresponding to the lower side wall 13A, and the upper side wall 13B is stacked on the lower side wall 13A to form a complete side wall 13. The bottom plate 11, the two lower magnetic columns 12A and the lower side wall 13A are formed into a first magnetic core 1A in an integral manner. The cover plate 14, the two upper magnetic columns and the upper side wall 13B are formed into a second magnetic core 1B in an integral manner. The first magnetic core 1A and the second magnetic core 1B have the same structure. Then the first magnetic core 1A and the second magnetic core 1B are combined with the coil. The effect of this embodiment is the same as that of the third embodiment, so it will not be described in detail.

[0064] See also Fig.15 , is an exploded view of the magnetic core structure of the eighth embodiment of the present application. As shown in the figure, the difference between this embodiment and the third embodiment lies in the opening 1310. In this embodiment, the first side wall portion 131A of the lower side wall 13A has a lower notch 1310A, and the first side wall portion 131B of the upper side wall 13B has an upper notch 1310B, the lower notch 1310A and the upper notch 1310B correspond to each other, and the opening 1310 is composed of the lower notch 1310A and the upper notch 1310B. The function of the opening 1310 of this embodiment is the same as that of the second embodiment, so it is not repeated.

[0065] See also Figure 16 to Figure 18 , Fig.16 is a three-dimensional diagram of a magnetic core structure according to a ninth embodiment of the present application. Fig.17 yes Fig.16 The cross-sectional view of the E-E' line is Fig.18It is an exploded view of a magnetic core structure. As shown in the figure, the present application provides a magnetic core structure 1, which includes: a bottom plate 11, two magnetic columns 12, a side wall 13 and a cover plate 14. The two magnetic columns 12 are arranged on the bottom plate 11. The side wall 13 includes a first side wall portion 134 and a second side wall portion 135. The first side wall portion 134 is arranged on the side of the bottom plate 11 along the arrangement direction of the two magnetic columns 12. The first side wall portion 134 extends along the outer side of the two magnetic columns 12 and turns to the adjacent side. One end of the second side wall portion 135 extends from the first side wall portion 134 to between the two magnetic columns 12. The cover plate 14 is arranged on the side wall 13, and the cover plate 14 covers the two magnetic columns 12.

[0066] In this embodiment, the bottom plate 11 has a first long side 111, a second long side 112, a first short side 113 and a second short side 114. The first long side 111 and the second long side 112 correspond to each other, the first short side 113 and the second short side 114 are disposed between the first long side 111 and the second long side 112, and the first side wall portion 134 is disposed between the first long side 111, the first short side 113 and the second short side 114. In other words, a third opening 103 is provided between the two ends of the first side wall portion 134, the third opening 103 is located at the second long side, and the third opening 103 simultaneously exposes the corresponding positions of the two magnetic columns 12 to the outside.

[0067] See also Fig.19 and Fig. 20 , Fig.19 is a three-dimensional diagram of a magnetic core structure of the tenth embodiment of the present application and Fig. 20 yes Fig.19 As shown in the figure, the difference between this embodiment and the ninth embodiment lies in the opening 1310. In this embodiment, the first side wall portion 134 has two openings 1310, and the two openings 1310 are located on the first long side 111. The two openings 1310 correspond to the two magnetic columns 12 and the coil 15 wound on the magnetic column 12. The function of the opening 1310 in this embodiment is the same as that in the second embodiment, so it is not repeated.

[0068] Furthermore, in this embodiment, with respect to the cross-sectional area of ​​the magnetic column 12 in the horizontal direction (ie Fig.21 Compared with the cross-sectional area of ​​the side wall 13 in the horizontal direction (i.e. Fig.21 and the cross-sectional area of ​​the magnetic column 12 in the horizontal direction compared to the cross-sectional area of ​​the bottom plate 11 or the cover plate 14 in the vertical direction (ie Fig. 20 ) have specific ratios, which are described as follows:

[0069] The first cross-sectional area A1 of the side wall 13 is equal to the second cross-sectional area A2 of the side wall 13. The ratio of the first cross-sectional area A1 of the side wall 13 (or the second cross-sectional area A2 of the side wall 13) to the cross-sectional area A0 of the magnetic column 12 ranges from 0.2 to 4.

[0070] The ratio of the third cross-sectional area A3 of the side wall 13 to the cross-sectional area A0 of the magnetic column 12 is in a range of 0.05 to 1.

[0071] The cross-sectional area A4 of the bottom plate 11 is equal to the cross-sectional area A5 of the cover plate 14. The ratio of the cross-sectional area A4 of the bottom plate 11 (or the cross-sectional area A5 of the cover plate 14) to the cross-sectional area A0 of the magnetic column 12 is between 0.2 and 0.8. The numerical range of the above structure can be adjusted according to the needs of the user.

[0072] Please also read Fig.21 , is an exploded view of the magnetic core structure of the eleventh embodiment of the present application. As shown in the figure, the difference between this embodiment and the tenth embodiment lies in the assembly method of the structure. Each magnetic column 12 of the magnetic core structure 1 of this embodiment includes a lower magnetic column 12A and an upper magnetic column 12B corresponding to the lower magnetic column 12A, and the upper magnetic column 12B is stacked on the lower magnetic column 12A to form a complete magnetic column 12. In addition, the side wall 13 of the magnetic core structure 1 includes a lower side wall 13A and an upper side wall 13B corresponding to the lower side wall 13A, and the upper side wall 13B is stacked on the lower side wall 13A to form a complete side wall 13. In this embodiment, the bottom plate 11, the two lower magnetic columns 12A and the lower side wall 13A are formed into a first magnetic core 1A in an integral manner. The cover plate 14, the two upper magnetic columns 12B and the upper side wall 13B are formed into a second magnetic core 1B in an integral manner. The first magnetic core 1A and the second magnetic core 1B have the same structure. Then the first magnetic core 1A and the second magnetic core 1B are combined with the coil. The effect of this embodiment is the same as that of the third embodiment, so it will not be described in detail.

[0073] See also Fig. 22 , is an exploded view of the magnetic core structure of the twelfth embodiment of the present application. As shown in the figure, the difference between this embodiment and the eleventh embodiment lies in the opening 1310. In this embodiment, the first side wall portion 131A of the lower side wall 13A has a lower notch 1310A, and the first side wall portion 131B of the upper side wall 13B has an upper notch 1310B, the lower notch 1310A and the upper notch 1310B correspond to each other, and the opening 1310 is composed of the lower notch 1310A and the upper notch 1310B. The function of the opening 1310 of this embodiment is the same as that of the second embodiment, so it is not repeated.

[0074] In summary, the present application provides a magnetic core structure, which has a side wall structure relative to the structural design of two magnetic columns, two coils are wound around the two magnetic columns, and current flows through the two coils to generate a magnetic field. The side wall can improve the magnetic field of the coil, effectively reducing the overall loss of the coil caused by the magnetic core structure. Furthermore, the side wall design of the magnetic core structure is also conducive to air convection to dissipate heat from the magnetic column and the coil.

[0075] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0076] The above description shows and describes several preferred embodiments of the present invention, but as mentioned above, it should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the invention concept of the present invention through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art shall not depart from the spirit and scope of the present invention, and shall be within the scope of protection of the claims attached to the present invention.

Claims

1. A magnetic core structure, characterized in that: It includes: Base plate; Two magnetic columns, which are arranged on the bottom plate; A side wall, comprising a first side wall portion, a second side wall portion and a third side wall portion, wherein the first side wall portion and the second side wall portion are arranged on both sides of the bottom plate along the arrangement direction of the two magnetic columns, the third side wall portion is located between the two magnetic columns, and the third side wall portion is connected to the first side wall portion and the second side wall portion respectively; and A cover plate is arranged on the side wall, and the cover plate covers the two magnetic columns.

2. The magnetic core structure according to claim 1, characterized in that: The bottom plate has a first long side, a second long side, a first short side and a second short side, the first long side and the second long side correspond to each other, the first short side and the second short side are arranged between the first long side and the second long side, the first side wall portion is arranged on the first long side, and the second side wall portion is arranged on the second long side.

3. The magnetic core structure according to claim 2, characterized in that: Two ends of the first side wall portion extend along the first long side, and two ends of the first side wall portion extend to the first short side and the second short side, respectively. Two ends of the second side wall portion extend along the second long side.

4. The magnetic core structure according to claim 3, characterized in that: The extending length of the two ends of the first side wall portion is located within the range of the vertical projection of the adjacent magnetic columns to the first short side and the second short side.

5. The magnetic core structure according to claim 3, characterized in that: The extension lengths of the two ends of the second side wall portion are within the range of the vertical projection of the two magnetic columns to the second long side.

6. The magnetic core structure according to claim 3, characterized in that: Two first openings are respectively provided between the two ends of the first side wall portion and the two ends of the second side wall portion, and the two first openings are respectively located at corners between the second long side and the first short side and corners between the second long side and the second short side.

7. The magnetic core structure according to claim 2, characterized in that: Both ends of the first side wall portion extend beyond the range of the vertical projection of the two magnetic columns to the first long side, and both ends of the second side wall portion extend beyond the range of the vertical projection of the two magnetic columns to the second long side.

8. The magnetic core structure according to claim 7, characterized in that: The extending lengths of both ends of the first side wall portion are the same as the extending lengths of both ends of the second side wall portion.

9. The magnetic core structure according to claim 7, characterized in that: Two second openings are respectively provided between the two ends of the first side wall portion and the two ends of the second side wall portion, and the two second openings are respectively located at the first short side and the second short side.

10. The magnetic core structure according to claim 1, characterized in that: The first side wall portion has two openings, and the two openings correspond to the two magnetic columns.

11. The magnetic core structure according to claim 1, characterized in that: The side wall has a corresponding arc wall surface adjacent to the cylindrical surfaces of the two magnetic pillars, and a gap exists between the arc wall surface of the side wall and the cylindrical surfaces of the two magnetic pillars.

12. The magnetic core structure according to claim 11, characterized in that: It further includes two coils, the two coils are sleeved on the two magnetic columns, and the two coils are located in the gap.

13. A magnetic core structure, characterized in that: It includes: Base plate; Two magnetic columns, which are arranged on the bottom plate; A side wall, comprising a first side wall portion and a second side wall portion, wherein the first side wall portion is arranged on a side edge of the bottom plate along the arrangement direction of the two magnetic columns, the first side wall portion extends along the outer sides of the two magnetic columns and turns to an adjacent side edge, and one end of the second side wall portion extends from the first side wall portion to between the two magnetic columns; as well as A cover plate is arranged on the side wall, and the cover plate covers the two magnetic columns.

14. The magnetic core structure according to claim 13, characterized in that: The bottom plate has a first long side, a second long side, a first short side and a second short side, the first long side and the second long side correspond to each other, the first short side and the second short side are arranged between the first long side and the second long side, and the first side wall portion is arranged on the first long side, the first short side and the second short side.

15. The magnetic core structure according to claim 14, characterized in that: A third opening is defined between two ends of the first side wall portion, and the third opening is located at the second long side.

16. The magnetic core structure according to claim 14, characterized in that: The first side wall portion located on the first long side has two openings, and the two openings correspond to the two magnetic columns.

17. The magnetic core structure according to claim 13, characterized in that: The first side wall portion and the second side wall portion have corresponding arc wall surfaces adjacent to the cylindrical surfaces of the two magnetic columns, and there is a gap between the arc wall surfaces of the first side wall portion and the second side wall portion and the cylindrical surfaces of the two magnetic columns.

18. The magnetic core structure according to claim 17, characterized in that: It further includes two coils, the two coils are sleeved on the two magnetic columns, and the two coils are located in the gap.

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