Integrated inductor for PFC circuit

Abstract

The technical problems that a traditional integrated inductor is poor in heat dissipation performance and not high in structural stability, and the requirement for high-strength work of the integrated inductor cannot be met are solved. The utility model provides an integrated inductor for a PFC (Power Factor Correction) circuit. The integrated inductor for the PFC circuit comprises a bearing frame, a cooling fan, three magnetic cores and three coils, in the assembling process of the integrated inductor for the PFC circuit, each coil is wound and sleeved on one magnetic core, and then the magnetic core sleeved with the coil is arranged on the bearing frame. In the working process of the integrated inductor for the PFC circuit, the heat dissipation fan works at the same time, the heat dissipation fan introduces external cold air into the flow guide air cavities of the two spacing plates, and the cold air is blown out from the air outlet holes in the two spacing plates to the magnetic core sleeved with the coil, so that heat generated by the integrated inductor for the PFC circuit in the working process is taken away, and the heat dissipation efficiency is improved. Good heat dissipation performance of the integrated inductor for the PFC circuit is guaranteed, and therefore the working stability of the integrated inductor for the PFC circuit is improved.

Description

Technical Field

[0001] The utility model relates to the field of integrated inductors, in particular to an integrated inductor for a PFC circuit. Background Art

[0002] The PFC circuit is a circuit used to improve the power factor of the system. Its main function is to make the current output by the power supply more stable by changing the input characteristics of the circuit, and to prevent the input power supply from "crashing" or overloading. The PFC circuit is mainly used in electronic products that require a large amount of power supply, such as personal computers, LCD monitors, and server systems. The basic principle of the PFC circuit is to use the phase difference of the distorted input voltage and current to achieve the purpose of correcting the power factor. The PFC circuit helps to reduce the load fluctuations caused by the components in the system to the power supply, thereby improving the stability and efficiency of the entire system. The PFC circuit mainly consists of three parts: input filter, rectifier, and capacitor hysteresis compensation network. The input filter can reduce the input current noise and filter interference, providing a clean power supply standard while maintaining the interface boost ratio and overall response speed unchanged.

[0003] However, traditional integrated inductors, such as the technical solution to be protected in the patent with application number CN201710532753.0 and patent name Integrated Inductor, have poor heat dissipation and low structural stability, and cannot meet the requirements of high-intensity operation of integrated inductors. Utility Model Content

[0004] Based on this, it is necessary to provide an integrated inductor for a PFC circuit to address the technical problems that traditional integrated inductors have poor heat dissipation, low structural stability, and cannot meet the requirements of high-intensity work of integrated inductors.

[0005] An integrated inductor for a PFC circuit, the integrated inductor for the PFC circuit comprising: a receiving frame, a heat dissipation fan, three magnetic cores and three coils;

[0006] The receiving frame comprises a receiving bottom plate, two receiving platforms and two spacer plates; one receiving platform is connected to the receiving bottom plate, the two receiving platforms are symmetrically arranged, and the two receiving platforms are connected through the two spacer plates; six insertion and positioning ports are provided on the receiving bottom plate;

[0007] The three magnetic cores are all arranged on the receiving frame, one end of the magnetic core is connected to one receiving platform, and the other end of the magnetic core is connected to another receiving platform; each of the partition plates is arranged between two adjacent magnetic cores; a guide air cavity is provided in the partition plate, and a plurality of air outlet holes are provided on both sides of the partition plate, and each of the air outlet holes is connected to the guide air cavity; the output end of the heat dissipation fan is connected to the two guide air cavities;

[0008] Each of the coils is sleeved on one of the magnetic cores; each of the wiring terminals of the coils is matched with the plug-in positioning port, and each of the wiring terminals of the coils is plugged into one of the plug-in positioning ports and connected to the receiving bottom plate.

[0009] In one of the embodiments, the heat dissipation fan is connected to one of the receiving platforms.

[0010] In one embodiment, the spacer plate is a rectangular parallelepiped structure.

[0011] In one embodiment, the partition plate and the two receiving platforms are integrally formed.

[0012] In one of the embodiments, a support column is provided on the receiving base plate.

[0013] In one of the embodiments, the support column and the receiving base plate are integrally formed.

[0014] In one embodiment, the receiving platform includes a receiving block and a connecting plate, and the receiving block is connected to the spacer plate via the connecting plate.

[0015] In one of the embodiments, the receiving block and the connecting plate are integrally formed.

[0016] In one embodiment, the receiving block is a rectangular parallelepiped structure.

[0017] In one embodiment, the connecting plate is a rectangular plate-shaped structure.

[0018] During the assembly process of the integrated inductor for the PFC circuit, each coil is first wound and sleeved on a magnetic core, and then the magnetic core sleeved with the coil is placed on a receiving frame. During the operation of the integrated inductor for the PFC circuit, the heat dissipation fan works at the same time, and the heat dissipation fan passes the cool air from the outside into the guide air cavity of the two partition plates, and blows it out from the air outlets on the two partition plates to the magnetic core sleeved with the coil, taking away the heat generated by the integrated inductor for the PFC circuit during the operation process, ensuring the good heat dissipation performance of the integrated inductor for the PFC circuit, thereby improving the working stability of the integrated inductor for the PFC circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the structure of an integrated inductor for a PFC circuit in one embodiment;

[0020] Figure 2 A schematic diagram of a partial structure of an integrated inductor for a PFC circuit in one embodiment;

[0021] Figure 3 for Figure 2A schematic diagram of the structure of an integrated inductor used in some PFC circuits in the embodiments. DETAILED DESCRIPTION

[0022] In order to make the above-mentioned purpose, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth so as to fully understand the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below. In the description of the utility model, it is necessary to understand that the orientation or position relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is based on the orientation or position relationship shown in the accompanying drawings, only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the utility model.

[0023] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0024] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0026] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0027] Please also read Figures 1 to 3 The utility model provides an integrated inductor 10 for a PFC circuit. The integrated inductor 10 for a PFC circuit includes: a receiving frame 100 , a heat dissipation fan 200 , three magnetic cores 300 and three coils 400 .

[0028] The receiving frame 100 includes a receiving base plate 110, two receiving platforms 120 and two spacers 130. A receiving platform 120 is connected to the receiving base plate 110, and the two receiving platforms 120 are symmetrically arranged, and the two receiving platforms 120 are connected by two spacers 130. In this embodiment, the spacers 130 are rectangular structures. The spacers 130 and the two receiving platforms 120 are integrally formed to further increase the structural stability of the receiving frame 100. Six insertion and positioning ports 101 are provided on the receiving base plate 110. In this embodiment, the heat dissipation fan 200 is connected to a receiving platform 120, and specifically, the heat dissipation fan 200 is connected to the receiving platform 120 at the top.

[0029] In this embodiment, the receiving platform 120 includes a receiving block 121 and a connecting plate 122, and the receiving block 121 is connected to the spacer plate 130 through the connecting plate 122. Further, the receiving block 121 and the connecting plate 122 are integrally formed to increase the structural strength and structural stability of the receiving platform 120. In one embodiment, the receiving block 121 is a rectangular parallelepiped structure. The connecting plate 122 is a rectangular plate-shaped structure.

[0030] The three magnetic cores 300 are all arranged on the receiving frame 100, one end of the magnetic core 300 is connected to a receiving platform 120, and the other end of the magnetic core 300 is connected to another receiving platform 120. Each partition plate 130 is arranged between two adjacent magnetic cores 300. A guide air cavity (not shown) is provided in the partition plate 130, and a plurality of air outlet holes 102 are provided on both sides of the partition plate 130, and each air outlet hole 102 is connected to the guide air cavity. The output end of the heat dissipation fan 200 is connected to the two guide air cavities.

[0031] Each coil 400 is sleeved on a magnetic core 300. Each terminal of the coil 400 is matched with the plug-in positioning port 101, and each terminal of the coil 400 is plugged into a plug-in positioning port 101 and connected to the receiving bottom plate 110. In order to facilitate supporting the receiving bottom plate 110, in one embodiment, a support column 111 is provided on the receiving bottom plate 110. In this embodiment, the support column 111 is integrally formed with the receiving bottom plate 110 to increase the structural strength of the receiving bottom plate 110.

[0032] During the assembly process of the integrated inductor 10 for the PFC circuit, each coil 400 is firstly wound and sleeved on a magnetic core 300, and then the magnetic core 300 sleeved with the coil 400 is placed on the receiving frame 100. During the operation of the integrated inductor 10 for the PFC circuit, the heat dissipation fan 200 works at the same time, and the heat dissipation fan 200 passes the cool air from the outside into the guide air cavity of the two partition plates 130, and blows it out from the air outlets 102 on the two partition plates 130, blowing it to the magnetic core 300 sleeved with the coil 400, taking away the heat generated by the integrated inductor 10 for the PFC circuit during the operation process, ensuring the good heat dissipation performance of the integrated inductor 10 for the PFC circuit, thereby improving the working stability of the integrated inductor 10 for the PFC circuit.

[0033] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0034] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. An integrated inductor for a PFC circuit, characterized in that: include: The receiving frame, cooling fan, three magnetic cores and three coils; The receiving frame comprises a receiving bottom plate, two receiving platforms and two spacer plates; one receiving platform is connected to the receiving bottom plate, the two receiving platforms are symmetrically arranged, and the two receiving platforms are connected through the two spacer plates; six insertion and positioning ports are provided on the receiving bottom plate; The three magnetic cores are all arranged on the receiving frame, one end of the magnetic core is connected to one receiving platform, and the other end of the magnetic core is connected to another receiving platform; each of the partition plates is arranged between two adjacent magnetic cores; a guide air cavity is provided in the partition plate, and a plurality of air outlet holes are provided on both sides of the partition plate, and each of the air outlet holes is connected to the guide air cavity; the output end of the heat dissipation fan is connected to the two guide air cavities; Each of the coils is sleeved on one of the magnetic cores; each of the wiring terminals of the coils is matched with the plug-in positioning port, and each of the wiring terminals of the coils is plugged into one of the plug-in positioning ports and connected to the receiving bottom plate.

2. The integrated inductor for a PFC circuit according to claim 1, characterized in that: The heat dissipation fan is connected to a receiving platform.

3. The integrated inductor for a PFC circuit according to claim 1, characterized in that: The partition plate is a rectangular parallelepiped structure.

4. The integrated inductor for a PFC circuit according to claim 1, characterized in that: The partition plate and the two receiving platforms are integrally formed.

5. The integrated inductor for a PFC circuit according to claim 1, characterized in that: The receiving bottom plate is provided with a supporting column.

6. The integrated inductor for a PFC circuit according to claim 5, characterized in that: The support column and the receiving bottom plate are integrally formed.

7. The integrated inductor for a PFC circuit according to claim 1, characterized in that: The receiving platform comprises a receiving block and a connecting plate, and the receiving block is connected to the spacer plate through the connecting plate.

8. The integrated inductor for a PFC circuit according to claim 7, characterized in that: The receiving block and the connecting plate are integrally formed.

9. The integrated inductor for a PFC circuit according to claim 7, characterized in that: The receiving block is a rectangular parallelepiped structure.

10. The integrated inductor for a PFC circuit according to claim 7, characterized in that: The connecting plate is a rectangular plate structure.

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