High-power inductor
By using copper strip automatic molding technology and combining magnetic core materials in high-power inductors, the problems of performance degradation and large losses of existing inductors in manufacturing and application are solved, and efficient current transmission and stable performance are achieved.
Patent Information
- Application Number
- CN202421408672.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-20
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2034-06-20
AI Technical Summary
During the manufacturing process, existing high-power inductors are difficult to meet current, difficult to process, degraded performance, and large material loss, which limits their application.
The inductor coil is manufactured using copper strip automatic molding technology, and the inductor is achieved by combining magnetic cores of different materials (ferrites manganese zinc materials and magnetic powder core materials) and combining the sealing structure and the use of potting glue.
It improves the conductor cross-sectional area of the inductor coil, meets the demand for large current, enhances the production efficiency and reliability of the inductor, reduces losses, and improves EMI performance.
Smart Images
Figure CN222690495U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of inductors, in particular to a high-power inductor. Background Art
[0002] Inductors are passive electronic components included in various electronic parts. They can convert electrical energy into magnetic energy and store it. They are devices made according to the principle of electromagnetic induction. In fact, any device that can generate self-inductance and mutual inductance can be called an inductor. Inductors are widely used. In AC circuits, inductors have the ability to block the passage of AC. They are often used in circuits for current blocking, voltage transformation, AC coupling, and loads, and are therefore widely used in various electronic terminal fields such as automobiles, new energy, switching power supplies, and aerospace.
[0003] At present, the manufacturing method of inductor components is to wind the coil on the magnetic ring or the frame and then assemble the magnetic core. Since the current of high-power inductors is very large, the wire cross-sectional area of conventional coils cannot meet the use requirements. Conventional winding is very difficult and the reliability is not high, which greatly reduces the performance of the inductor components, the processing capacity is insufficient, and the application is limited. In addition, due to the particularity of the material, the loss in the working circuit of the inductor is very large. Utility Model Content
[0004] The utility model aims to overcome the deficiencies of the prior art and provide a high-power inductor.
[0005] The purpose of this utility model is achieved through the following technical solutions:
[0006] The utility model provides a high-power inductor, comprising a first magnetic core, a second magnetic core, an inductor coil and a positioning plate, wherein the first magnetic core is a peripheral magnetic core, the second magnetic core is a middle column magnetic core, the inductor coil is automatically formed by using a copper strip, the second magnetic core passes through a middle hole of the inductor coil, the positioning plates are respectively arranged at both ends of the second magnetic core, and the first magnetic core is sleeved on the positioning plate.
[0007] Furthermore, the first magnetic core is made of ferrite manganese zinc material, and the width of the first magnetic core is greater than the width of the positioning plate.
[0008] Furthermore, the second magnetic core is made of magnetic powder core material.
[0009] Furthermore, an insulating tape is arranged on the periphery of the second magnetic core.
[0010] Furthermore, the first magnetic core, the second magnetic core, the inductor coil and the positioning plate are integrally potted with potting glue.
[0011] Furthermore, gaps are provided between the copper bars of the inductor coil, and two ends of the copper bars extend out of the first magnetic core to serve as pins of the inductor coil.
[0012] The beneficial effects of the utility model are:
[0013] 1) The inductor coil of the utility model is automatically formed by using copper bars, which improves production efficiency. The direct use of copper bars can increase the conductor cross-sectional area of the coil to meet the demand for large currents.
[0014] 2) The utility model is a closed structure in appearance, and the inductor coil and the second magnetic core are integrally fixed and potted, so that the heat inside the inductor is balanced and effectively dissipated through the first magnetic core. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 This is a schematic diagram of the external structure of a high-power inductor according to an embodiment of the utility model;
[0016] Figure 2 This is a schematic diagram of the internal structure of a high-power inductor according to an embodiment of the utility model;
[0017] Figure 3 A schematic diagram of an inductor coil of a high-power inductor according to an embodiment of the utility model;
[0018] Figure 4 It is a schematic diagram of an expanded inductor coil of a high-power inductor according to an embodiment of the utility model;
[0019] In the figure, 11 is the first magnetic core, 12 is the second magnetic core, 2 is the inductor, 3 is the positioning board, and 22 is the pin. DETAILED DESCRIPTION
[0020] The following will be combined with the embodiments to clearly and completely describe the technical solution of the utility model. Obviously, the described embodiments are only 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.
[0021] Specifically, the external structure of the utility model is as follows: Figure 1 As shown, the external structure of the utility model includes a first magnetic core 11, and two ends of the inductor coil 2 extend out of the first magnetic core to form pins 22 of the inductor.
[0022] Specifically, the internal structure of the utility model is as follows: Figure 2As shown, the first magnetic core 11 is an outer magnetic core, which constitutes an external magnetic circuit. The first magnetic core 11 is made of ferrite manganese zinc material, which can effectively reduce the core loss of the inductor. The second magnetic core 12 is a central column magnetic core, which constitutes the middle magnetic circuit of the inductor coil 2. It can be made of a material different from the first magnetic core. The second magnetic core 12 is made of a magnetic powder core material, such as iron-nickel, iron-silicon and other magnetic powder core materials. The saturation characteristics of the inductor can be effectively increased. Positioning plates 3 are respectively provided at both ends of the second magnetic core 12. The first magnetic core 11 is sleeved on the positioning plates. Therefore, the width of the first magnetic core 11 is greater than the width of the positioning plate 3. The second magnetic core is designed by combining the cross-section with the first magnetic core 11 to more efficiently apply the advantages of magnetic cores of different materials. On the one hand, it can have a high saturation capacity, and at the same time, the overall loss of the combined magnetic core is greatly reduced. In addition, the closed magnetic circuit design is adopted in the structure, which can effectively improve the EMI performance. The inductor coil 2 adopts a copper bar automatic forming structure, which uses automated forming to improve production efficiency. The direct use of copper bars can increase the conductor cross-sectional area of the coil to meet the large current requirements. The positioning plate 3 can fix the position of the second magnetic core 12 to ensure consistency. At the same time, during the manufacturing process, an insulating tape can be wrapped around the second magnetic core 12 to meet the insulation strength of the magnetic core and the coil. After the inductor is combined, the inductor is a closed structure in appearance. The inductor coil 2 and the second magnetic core 11 are suitable for overall fixed potting. A potting glue with a high thermal conductivity is used, and then the first magnetic core 11 and the inductor coil 2 and the second magnetic core 11 are potted as a whole, so that the heat inside the inductor is balanced and effectively dissipated through the first magnetic core 11.
[0023] Specifically, the schematic diagram of the inductor coil of the utility model is as follows Figure 3 As shown, the inductor 2 is wound into a coil according to the shape of the second magnetic core 12, and the second magnetic core 12 passes through the hole in the middle of the coil 2. The inductor 2 can be a series of regular shapes such as rectangle, circle or ellipse.
[0024] Specifically, the expanded schematic diagram of the inductor coil of the utility model is as follows: Figure 4 As shown, the coil is wound using a Figure 4 The copper strips are shaped into coils by a forming machine. To ensure insulation, there is a certain gap between the copper strips of the coils. The two ends of the copper strips eventually form the pins 22 of the inductor.
[0025] The above is only a preferred embodiment of the utility model. It should be understood that the utility model 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 concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not deviate from the spirit and scope of the utility model, and should be within the scope of protection of the claims attached to the utility model.
Claims
1. A high power inductor, characterized in that: The invention comprises a first magnetic core (11), a second magnetic core (12), an inductor coil (2) and a positioning plate (3); the first magnetic core (11) is a peripheral magnetic core, the second magnetic core (12) is a center column magnetic core, the inductor coil (2) is automatically formed by using a copper strip, the second magnetic core (12) passes through a middle hole of the inductor coil (2), the positioning plates (3) are respectively arranged at both ends of the second magnetic core (12), and the first magnetic core (11) is sleeved on the positioning plate (3).
2. A high-power inductor according to claim 1, characterized in that: The first magnetic core (11) is made of ferrite manganese zinc material, and the width of the first magnetic core (11) is greater than the width of the positioning plate (3).
3. The high-power inductor according to claim 1, characterized in that: The second magnetic core (12) is made of magnetic powder core material.
4. The high-power inductor according to claim 1, characterized in that: An insulating tape is arranged on the periphery of the second magnetic core (12).
5. The high-power inductor according to claim 1, characterized in that: The first magnetic core (11), the second magnetic core (12), the inductor coil (2) and the positioning plate (3) are integrally potted using potting glue.
6. The high-power inductor according to claim 1, characterized in that: Gaps are provided between the copper bars of the inductor coil (2), and two ends of the copper bars extend out of the first magnetic core (11) to serve as pins (22) of the inductor.