Magnetic shielding PFC inductor

Abstract

The utility model relates to the technical field of inductors, and discloses a magnetically-shielded PFC inductor which comprises an assembly mounting base assembly, fixing buckle assemblies are installed on the two sides of the assembly mounting base assembly in a limiting mode, and an inductor assembly is installed in the assembly mounting base assembly in a limiting mode. And meanwhile, protection assemblies are mounted at the top and the bottom of the assembly mounting seat assembly. According to the utility model, the assembling and mounting seat assembly is arranged in the device, so that the device can be conveniently disassembled through the assembling and mounting seat assembly when the device is used, the device is assembled, and the subsequent maintenance and replacement work is carried out, so that the disassembling and assembling work is more convenient, and the working efficiency is improved. And the working problem that a traditional integrated structure cannot be detached is solved.

Description

Technical Field

[0001] This utility model relates to the technical field of inductors, specifically to a magnetically shielded PFC inductor. Background Technology

[0002] Low power factor has long been a persistent problem in the operation of power systems and various electronic devices, resulting in significant reactive power losses. This not only reduces energy efficiency but also increases electricity costs and equipment burden. To address this issue, power factor correction (PFC) technology has emerged. PFC inductors, as a core component of PFC circuits, can adjust the phase difference between current and voltage, thereby improving the power factor and playing a crucial role in enhancing energy efficiency. However, traditional PFC inductors exhibit several drawbacks in practical applications. On one hand, they easily generate a large amount of heat during operation; if heat dissipation is inadequate, excessively high temperatures can damage internal components, affecting their performance and lifespan. On the other hand, traditional PFC inductors lack effective electromagnetic shielding measures, resulting in high leakage flux and significant losses, making it difficult to further improve the power factor and leading to high temperature rises during equipment operation. This not only reduces energy efficiency but may also cause electromagnetic interference to surrounding electronic devices, affecting the stability and reliability of the entire system. Therefore, the development of a PFC inductor with both excellent heat dissipation performance and efficient magnetic shielding is urgently needed.

[0003] Application number CN202221737922.7 discloses a single-sided pin-surrounded magnetic core PFC inductor, including a winding frame, a magnetic core assembly, and a winding wound on the winding frame. The magnetic core assembly includes an upper magnetic core and a lower magnetic core spliced ​​together, and a core post disposed on the upper magnetic core and / or the lower magnetic core. The upper magnetic core includes a top cover, and the lower magnetic core includes a bottom cover and sidewalls disposed on the four periphery of the bottom cover. After the upper magnetic core and the lower magnetic core are spliced ​​together, an internal mounting cavity is formed. The assembly of the winding frame and the winding is installed in the mounting cavity and surrounded by the upper magnetic core and the lower magnetic core. This invention uses an upper and lower magnetic core that are spliced ​​together, and installs the winding frame and coil assembly into the mounting cavity formed by the splicing of the upper and lower magnetic cores. This allows the coil to be completely surrounded by the upper and lower magnetic cores, improving the utilization rate of the magnetic cores, providing good magnetic shielding capabilities, and reducing the overall size of the PFC inductor. However, it has a drawback: the assembly work or subsequent internal replacement work of the device is somewhat cumbersome because the device is made by a one-piece casting method, which makes disassembly and assembly inconvenient. Utility Model Content

[0004] The purpose of this invention is to provide a magnetically shielded PFC inductor, which solves the problem of cumbersome assembly work or subsequent internal replacement work of the device, because the above device is made by integral casting, which makes disassembly and assembly inconvenient.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model is a magnetically shielded PFC inductor, including an assembly mounting base assembly. The assembly mounting base assembly is limited by fixing buckle assemblies on both sides, and an inductor assembly is limited by an inductor assembly inside the assembly mounting base assembly. Meanwhile, protective assemblies are installed on the top and bottom of the assembly mounting base assembly.

[0007] The assembly mounting base assembly includes a first assembly shell, a second assembly shell is mounted on the bottom of the first assembly shell, and a locking groove is formed around the bottom of the second assembly shell.

[0008] Furthermore, the interior of the second assembly housing is provided with coil slots.

[0009] Furthermore, the fixing buckle assembly includes a locking plate, a limiting edge is installed on the top of the locking plate, a limiting buckle is installed on the bottom of the locking plate, and a limiting traction end is installed on one side of the locking plate. The limiting buckle is limited and installed inside the locking groove, and the limiting edge is limited and installed on the top of the first assembly shell.

[0010] Furthermore, the inductor assembly includes a coil with leads installed at both ends. The coil is limited and installed inside the coil slot and supported by the intermediate frame. The leads pass through the outer walls of both ends of the first assembly housing, and the outer ends of the leads are limited and installed in the middle of the limiting traction end.

[0011] Furthermore, the protective component includes a thermal insulation composite layer, on top of which a silicone pad is mounted, and the thermal insulation composite layer is installed on the outer wall of the first assembly shell and the second assembly shell.

[0012] Furthermore, the thermal insulation composite layer includes a ceramic material layer, a polyurethane foam material layer is installed inside the ceramic material layer, and a glass fiber material layer is installed inside the polyurethane foam material layer.

[0013] This utility model has the following beneficial effects:

[0014] (1) The magnetically shielded PFC inductor of this utility model has an assembly mounting base component installed in the device, which makes it easy to disassemble the device during assembly, maintenance and replacement. This makes disassembly and assembly more convenient and avoids the problem of traditional integrated non-disassembly.

[0015] (2) The magnetically shielded PFC inductor of this utility model has a protective component installed on the device, which can prevent the influence of different temperature differences on the internal components during use. To a certain extent, it can prevent the inductance, loss and other parameters from changing due to the rise or fall of temperature, thus affecting the stability and reliability of the circuit and ensuring the stability of the device.

[0016] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of a magnetically shielded PFC inductor according to the present invention.

[0019] Figure 2 This is a schematic diagram of the disassembled structure of a magnetically shielded PFC inductor fixing buckle assembly according to the present invention;

[0020] Figure 3 This is a schematic diagram of a magnetically shielded PFC inductor split structure according to the present invention;

[0021] Figure 4 This is a schematic diagram of a magnetically shielded PFC inductive thermal insulation composite layer structure according to the present invention.

[0022] The attached diagram lists the components represented by each number as follows:

[0023] In the diagram: 1. Assembly mounting base assembly; 2. Fixing buckle assembly; 3. Inductor assembly; 4. Protective assembly; 101. First assembly shell; 102. Second assembly shell; 103. Locking groove; 104. Coil groove; 201. Locking plate; 202. Limiting edge; 203. Limiting buckle; 204. Limiting traction end; 301. Coil; 302. Lead wire; 401. Thermal insulation composite layer; 402. Silicone pad; 4011. Ceramic material layer; 4012. Polyurethane foam material layer; 4013. Fiberglass material layer. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figures 1-4 As shown, this utility model is a magnetically shielded PFC inductor, with a mounting base assembly 1. The mounting base assembly 1 is limited by fixing buckle assemblies 2 on both sides, and an inductor assembly 3 is limited by the inside of the mounting base assembly 1. At the same time, protective assemblies 4 are installed on the top and bottom of the mounting base assembly 1.

[0026] The assembly mounting base assembly 1 includes a first assembly shell 101, a second assembly shell 102 is mounted on the bottom of the first assembly shell 101, and a locking groove 103 is provided around the bottom of the second assembly shell 102.

[0027] By incorporating an assembly mounting base 1 within the device, assembly, maintenance, and replacement can be easily performed using the assembly mounting base 1, making disassembly and assembly more convenient and avoiding the problems associated with traditional one-piece designs that cannot be disassembled.

[0028] The second assembly shell 102 has a coil slot 104 inside. The assembly mounting base assembly 1 is composed of the first assembly shell 101 and the second assembly shell 102. The coil slot 104 of the second assembly shell 102 provides installation space for the coil 301 and supports the coil 301 through the middle frame to ensure its stability.

[0029] The fixing buckle assembly 2 includes a buckle plate 201. A limiting edge 202 is installed on the top of the buckle plate 201, and a limiting buckle 203 is installed on the bottom of the buckle plate 201. At the same time, a limiting traction end 204 is installed on one side of the buckle plate 201. The limiting buckle 203 is limited and installed inside the locking groove 103, and the limiting edge 202 is limited and installed on the top of the first assembly shell 101. The limiting buckle 203 on the buckle plate 201 of the fixing buckle assembly 2 cooperates with the locking groove 103 at the bottom of the second assembly shell 102, and the limiting edge 202 cooperates with the top of the first assembly shell 101 to securely connect the assembly mounting base assembly 1. At the same time, the limiting traction end 204 limits the lead wire 302 to ensure stable circuit connection.

[0030] The inductor assembly 3 includes a coil 301, with leads 302 installed at both ends of the coil 301. The coil 301 is limited and installed inside the coil slot 104 and supported by the middle frame. The leads 302 pass through the outer walls of both ends of the first assembly shell 101, and the outer ends of the leads 302 are limited and installed in the middle of the limiting traction end 204.

[0031] The protective component 4 includes a thermal insulation composite layer 401, on the top of which a silicone pad 402 is installed, and the thermal insulation composite layer 401 is installed on the outer wall of the first assembly shell 101 and the second assembly shell 102.

[0032] The thermal insulation composite layer 401 includes a ceramic material layer 4011, a polyurethane foam material layer 4012 is installed inside the ceramic material layer 4011, and a glass fiber material layer 4013 is installed inside the polyurethane foam material layer 4012. The thermal insulation composite layer 401 of the protective component 4 is composed of the ceramic material layer 4011, the polyurethane foam material layer 4012 and the glass fiber material layer 4013. The silicone pad 402 on top is installed together with the thermal insulation composite layer 401 on the outer wall of the first assembly shell 101 and the second assembly shell 102, which plays the role of heat insulation, buffering and shielding magnetic interference, reducing the impact of heat on the surrounding environment when the inductor is working, as well as the interference of external magnetic fields on the inductor, and improving the working stability and efficiency of the inductor.

[0033] The magnetically shielded PFC inductor achieves power factor correction and magnetic shielding functions through the coordinated operation of its components. The coil 301 in inductor assembly 3 is the core component. In the circuit, current flows into coil 301 through lead 302. Based on the principle of electromagnetic induction, coil 301 generates a magnetic field, storing and filtering the current to achieve power factor correction. The mounting bracket assembly 1 consists of a first mounting shell 101 and a second mounting shell 102. The coil slot 104 of the second mounting shell 102 provides mounting space for coil 301, and the coil 301 is supported by a central frame to ensure its stability. The limiting buckle 203 on the locking plate 201 of the fixing buckle assembly 2 engages with the locking slot 103 at the bottom of the second mounting shell 102, and the limiting edge 202 engages with the top of the first mounting shell 101, securely connecting the mounting bracket assembly 1. Simultaneously, the limiting traction end 204 limits the lead 302, ensuring a stable circuit connection. The thermal insulation composite layer 401 of the protective component 4 is composed of a ceramic material layer 4011, a polyurethane foam material layer 4012, and a glass fiber material layer 4013. The silicone pad 402 on top, together with the thermal insulation composite layer 401, is installed on the outer walls of the first and second assembly shells 101, serving to insulate, buffer, and shield against magnetic interference. This reduces the impact of heat from the inductor on the surrounding environment and the interference of external magnetic fields on the inductor, improving the inductor's operational stability and efficiency. The coil 301 is supported by the intermediate frame and then positioned within the coil slot 104 to ensure its fixed position. The lead wire 302 passes through the outer walls at both ends of the first assembly shell 101, and its outer end is positioned in the middle of the limiting traction end 204, completing the circuit connection between the inductor component 3, the assembly mounting base component 1, and the fixing buckle component 2. The limiting buckle 203 of the fixing buckle component 2 is then inserted into the bottom of the second assembly shell 102. Within the locking groove 103 of the part, the limiting edge 202 is installed on the top of the first assembly shell 101, so that the assembly mounting base assembly 1 and the fixing buckle assembly 2 are firmly connected. The thermal insulation composite layer 401 of the protective component 4 is installed on the outer wall of the first assembly shell 101 and the second assembly shell 102, and the top is covered with a silicone pad 402, completing the assembly of the entire magnetically shielded PFC inductor. When the circuit is powered on, the current flows into the coil 301 through the lead 302. The coil 301 generates a magnetic field and begins to perform power factor correction, storing energy and filtering the current in the circuit. During the operation of the inductor, the protective component 4 continues to play a role. The silicone pad 402 and the thermal insulation composite layer 401 isolate heat and reduce the influence of the inductor's own heat on other components. At the same time, the thermal insulation composite layer 401, composed of ceramic material layer 4011, polyurethane foam material layer 4012 and glass fiber material layer 4013, shields external magnetic field interference and ensures stable operation of the inductor.

[0034] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A magnetic shielded PFC inductor comprising an assembly mount assembly (1) characterized by: The assembly mounting base assembly (1) is limited by fixing buckle assemblies (2) on both sides, and the assembly mounting base assembly (1) is limited by inductor assembly (3) inside, while the assembly mounting base assembly (1) is limited by protective assembly (4) on the top and bottom. The assembly mounting base assembly (1) includes a first assembly shell (101), and a second assembly shell (102) is mounted on the bottom of the first assembly shell (101). A locking groove (103) is provided around the bottom of the second assembly shell (102).

2. A magnetically shielded PFC inductor according to claim 1, characterized in that: The second assembly housing (102) has a coil slot (104) inside.

3. A magnetically shielded PFC inductor according to claim 1, wherein: The fixed buckle assembly (2) includes a buckle plate (201), a limiting edge (202) is installed on the top of the buckle plate (201), and a limiting buckle (203) is installed on the bottom of the buckle plate (201). At the same time, a limiting traction end (204) is installed on one side of the buckle plate (201). The limiting buckle (203) is limited and installed inside the locking groove (103), and the limiting edge (202) is limited and installed on the top of the first assembly shell (101).

4. A magnetically shielded PFC inductor according to claim 1, wherein: The inductor assembly (3) includes a coil (301), with leads (302) installed at both ends of the coil (301). The coil (301) is limited and installed inside the coil slot (104) and supported by the intermediate frame. The leads (302) penetrate the outer walls at both ends of the first assembly shell (101), and the outer ends of the leads (302) are limited and installed in the middle of the limiting traction end (204).

5. A magnetically shielded PFC inductor according to claim 1, wherein: The protective component (4) includes a thermal insulation composite layer (401), on the top of which is a silicone pad (402), and the thermal insulation composite layer (401) is installed on the outer wall of the first assembly shell (101) and the second assembly shell (102).

6. A magnetically shielded PFC inductor according to claim 5, characterized in that: The thermal insulation composite layer (401) includes a ceramic material layer (4011), a polyurethane foam material layer (4012) is installed inside the ceramic material layer (4011), and a glass fiber material layer (4013) is installed inside the polyurethane foam material layer (4012).

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