Dish-shaped large-current inductor

Abstract

The utility model discloses a dish-shaped large-current inductor, which belongs to the technical field of electromagnetic elements and comprises a magnetic core, a middle column is fixedly connected to the outer side wall of the magnetic core, a heat dissipation groove is formed in the outer side wall of the middle column, an insulating plate is sleeved on the outer side wall of the middle column, a coil is sleeved at the center of the outer side wall of the middle column, and a bottom plate is adhered to the bottom of the magnetic core. A fixing plate is fixedly connected to the top of the bottom plate, a connecting plate is fixedly connected to the outer side wall of the fixing plate, a spring is fixedly connected to the side, close to the magnetic core, of the connecting plate, and an extrusion plate is fixedly connected to the end, away from the connecting plate, of the spring. According to the disc-shaped large-current inductor, the outer side wall of the middle column is sleeved with the coil, the insulating plates are insulated on the two sides of the coil, so that the magnetic cores are installed at the two ends of the middle column, the heat dissipation capacity of the middle column is effectively improved through the heat dissipation grooves formed in the outer side wall of the middle column, the limited packaging space of a client is fully utilized by the coil, product packaging is small, and the current is large; the power is high, and the service power of the product is effectively improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of electromagnetic components, and in particular relates to a disc-shaped high-current inductor. Background Art

[0002] With the rapid development of power electronics technology, high current inductors are important components in key areas such as power systems, industrial automation, new energy and electric vehicles. Their performance directly affects the operating efficiency and stability of the entire system.

[0003] Traditional PFC inductors use PQ cores and film-wrapped wire structures. Due to the packaging and structure, it is difficult to achieve high power and high current structures. The magnetic flux density is also difficult to increase, and the heat dissipation is poor. Therefore, when traditional inductors handle large currents, due to the high current density, heat dissipation is difficult, which easily causes the inductor temperature to rise too high, thereby affecting the product's power usage;

[0004] In order to solve the above problems, a disc-shaped high-current inductor is proposed in the present application. Utility Model Content

[0005] In view of the problems in the related art, the utility model proposes a disc-shaped high-current inductor to overcome the above technical problems existing in the existing related art.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A disc-shaped high-current inductor comprises a magnetic core, the outer wall of the magnetic core is fixedly connected to a middle column, the outer wall of the middle column is provided with a heat dissipation groove, the outer wall of the middle column is sleeved with an insulating plate, the center of the outer wall of the middle column is sleeved with a coil, and the bottom of the magnetic core is adhered to a bottom plate.

[0008] Preferably, a fixing plate is fixedly connected to the top of the base plate, a connecting plate is fixedly connected to the outer wall of the fixing plate, a spring is fixedly connected to the side of the connecting plate close to the magnetic core, and an extrusion plate is fixedly connected to the end of the spring away from the connecting plate.

[0009] By setting a fixing plate, a connecting plate, a spring and an extrusion plate, the connecting plate is installed on both sides of the fixing plate. The spring installed inside the connecting plate drives the extrusion plate to extrude and fix the magnetic core, thereby preventing the magnetic core from falling off or scattering during operation.

[0010] Preferably, a sliding groove is provided on the outer side wall of the connecting plate, and the connecting plate is slidably connected to the limiting block via the sliding groove.

[0011] By providing the slide groove and the limit block, the limit block can be moved inside the slide groove, and the extrusion plate can be limited to avoid shaking of the extrusion plate when moving.

[0012] Preferably, a limiting groove is provided on the outer side wall of the extrusion plate, and a limiting strip is fixedly connected to a side of the magnetic core close to the extrusion plate.

[0013] By providing the limiting groove and the limiting strip, the inner side wall of the limiting groove is adapted to the outer side wall of the limiting strip, so that the extrusion plate can be effectively engaged with the magnetic core.

[0014] Preferably, an outer side wall of the fixing plate is fixedly connected with a fixing seat, and a fixing hole is opened at the center of the fixing seat.

[0015] By setting the fixing seat, the fixing seat installed at both ends of the fixing plate is realized, which makes it easy to fix the fixing plate, so that the magnetic core can operate stably.

[0016] To sum up, the technical effects and advantages of the utility model are as follows: the disc-shaped high-current inductor, by sleeve-mounting the coil on the outer wall of the middle column, insulates the insulating plate on both sides of the coil, so that the magnetic core is installed at both ends of the middle column, and the heat dissipation grooves opened on the outer wall of the middle column effectively improve the heat dissipation capacity of the middle column. The coil makes full use of the customer's limited packaging space, so that the product package is small, the current is large, the power is high, and the product's power consumption is effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the coil of the utility model and its related structures;

[0019] Figure 3 This is a schematic diagram of the extruded plate of the utility model and its related structures;

[0020] Figure 4 This is a schematic diagram of the fixing seat of the utility model and its related structures.

[0021] In the figure: 1. magnetic core; 2. middle column; 3. heat dissipation groove; 4. insulation plate; 5. coil; 6. bottom plate; 7. fixing plate; 8. connecting plate; 9. slide groove; 10. spring; 11. extrusion plate; 12. limit groove; 13. limit strip; 14. limit block; 15. fixing seat. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] Reference Figure 1-2A disc-shaped high-current inductor comprises a magnetic core 1, which adopts a semicircular EQ-shaped structure to save space. A middle column 2 is fixedly connected to the outer wall of the magnetic core 1. A heat dissipation groove 3 is provided on the outer wall of the middle column 2. The heat dissipation groove 3 adopts a segmented air gap to make the cross-sectional area of ​​the middle column 2 large, and fully utilizes the performance of the magnetic core 1 to better dissipate heat. An insulating plate 4 is sleeved on the outer wall of the middle column 2. The insulating plate 4 is made of epoxy resin as an insulating material. A coil 5 is sleeved at the center of the outer wall of the middle column 2. The coil 5 is flat, so that the coil 5 has enough cross-sectional area to meet the needs of large current. By arranging insulating plates 4 on both sides of the coil 5, the magnetic core 1 is completely isolated from the coil 5 to achieve insulation. A bottom plate 6 is bonded to the bottom of the magnetic core 1. The bottom plate 6 is made of epoxy resin material. The bottom plate 6 is fixed to the pin points of the magnetic core 1 and the coil 5 with epoxy glue, so that the bonding is firm and reliability vibration can be met.

[0024] Reference Figure 1 , Figure 3 and Figure 4 A fixing plate 7 is fixedly connected to the top of the bottom plate 6, a connecting plate 8 is fixedly connected to the outer wall of the fixing plate 7, a spring 10 is fixedly connected to the side of the connecting plate 8 close to the magnetic core 1, and an extrusion plate 11 is fixedly connected to the end of the spring 10 away from the connecting plate 8. The fixing plate 7 is installed on the top of the bottom plate 6, and one side of the fixing plate 7 is in contact with the magnetic core 1, and connecting plates 8 are installed on both sides of the fixing plate 7. The spring 10 is installed inside the connecting plate 8 to drive the extrusion plate 11 to clamp and fix the magnetic core 1, so that the magnetic core 1 is effectively fixed to the top of the bottom plate 6. The fixing plate 7, the connecting plate 8 and the extrusion plate 11 are all made of epoxy resin materials.

[0025] Reference Figure 3-4 A slide groove 9 is provided on the outer wall of the connecting plate 8, and the connecting plate 8 is slidably connected to the limiting block 14 through the slide groove 9. The limiting block 14 can move inside the slide groove 9 through the slide groove 9 provided on the outer wall of the connecting plate 8, so that the extrusion plate 11 drives the limiting block 14 to move when it moves, and then the extrusion plate 11 can be limited by the limiting block 14 to prevent the extrusion plate 11 from shaking or falling off when it moves.

[0026] Reference Figure 1 , Figure 3 and Figure 4 A limiting groove 12 is provided on the outer wall of the extrusion plate 11, and a limiting strip 13 is fixedly connected to the side of the magnetic core 1 close to the extrusion plate 11. The limiting groove 12 is provided on the side of the extrusion plate 11 close to the magnetic core 1 and is adapted to the limiting strip 13 installed on the outer wall of the magnetic core 1, so that the extrusion plate 11 is engaged with the limiting strip 13 through the limiting groove 12, thereby effectively preventing the magnetic core 1 from shaking or falling off.

[0027] Reference Figure 3-4The outer wall of the fixing plate 7 is fixedly connected with a fixing seat 15, and a fixing hole is opened at the center of the fixing seat 15. By installing the fixing seats 15 at both ends of the fixing plate 7, the fixing plate 7 can be effectively fixed and installed through the fixing seats 15, and the outer walls of the fixing seats 15 are all provided with fixing holes, which can effectively prevent the fixing plate 7 from loosening or falling off after installation.

[0028] Working principle: The coil 5 is sleeved at the center of the middle column 2, and insulating plates 4 are installed on both sides of the coil 5, so that the middle column 2 drives the insulating plate 4 and the coil 5 to be installed inside the magnetic core 1, and the magnetic core 1 and the coil 5 are separated by the insulating plate 4, and the bottom plate 6 and the pin points of the magnetic core 1 and the coil 5 are fixed with epoxy glue to ensure a firm bond, and the connecting plate 8 is installed on the outer wall of the fixing plate 7, so that the spring 10 inside the connecting plate 8 drives the extrusion plate 11 to extrude the magnetic core 1, and the fixing plate 7 can be quickly installed and disassembled through the fixing seat 15.

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A disc-shaped high-current inductor, comprising a magnetic core (1), characterized in that: The outer wall of the magnetic core (1) is fixedly connected to a middle column (2), the outer wall of the middle column (2) is provided with a heat dissipation groove (3), the outer wall of the middle column (2) is sleeved with an insulating plate (4), the center of the outer wall of the middle column (2) is sleeved with a coil (5), and the bottom of the magnetic core (1) is bonded with a bottom plate (6).

2. A disc-shaped high current inductor according to claim 1, characterized in that: A fixing plate (7) is fixedly connected to the top of the bottom plate (6), a connecting plate (8) is fixedly connected to the outer wall of the fixing plate (7), a spring (10) is fixedly connected to a side of the connecting plate (8) close to the magnetic core (1), and an extrusion plate (11) is fixedly connected to an end of the spring (10) away from the connecting plate (8).

3. A disc-shaped high current inductor according to claim 2, characterized in that: The outer side wall of the connecting plate (8) is provided with a sliding groove (9), and the connecting plate (8) is slidably connected to the limiting block (14) via the sliding groove (9).

4. The disc-shaped high-current inductor according to claim 2, characterized in that: The outer side wall of the extrusion plate (11) is provided with a limiting groove (12), and a side of the magnetic core (1) close to the extrusion plate (11) is fixedly connected to a limiting strip (13).

5. The disc-shaped high-current inductor according to claim 2, characterized in that: A fixing seat (15) is fixedly connected to the outer side wall of the fixing plate (7), and a fixing hole is provided at the center of the fixing seat (15).

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