Two-way magnetic integrated PFC inductor

Abstract

The invention discloses a two-way magnetic integrated PFC inductor, the two-way magnetic integrated PFC inductor comprises a base, a magnetic core, two first windings and two second windings, the magnetic core, the two first windings and the two second windings are all installed on the base, and the two first windings and the two second windings are respectively wound on the side surface of the magnetic core; the magnetic core comprises a first winding part and a second winding part, and the first winding part and the second winding part are arranged on the two sides of the magnetic core in the length extension direction of the magnetic core; the two first windings are respectively wound on the first winding parts, so that the two first windings are subjected to magnetic circuit integration through the first winding parts; and the two second windings are respectively wound on the second winding parts, so that the two second windings are subjected to magnetic circuit integration through the second winding parts. According to the double-channel magnetic integration PFC inductor, the first winding part and the second winding part which are linearly arranged serve as double-channel magnetic cores, and the two first windings and the two second windings are integrated into a whole.

Description

Technical Field

[0001] The present invention relates to the technical field of PFC inductors, and in particular to a dual-path magnetic integrated PFC inductor. Background Art

[0002] PFC inductors usually refer to Power Factor Correction Inductors, which are used for power factor correction in power supply circuits. In power supply systems, power factor is an important indicator to measure the effective use of electrical energy by the circuit. PFC inductors adjust the current waveform of the circuit to make it closer to a sine wave and make the power factor close to 1, thereby reducing harmonic pollution in the power grid and improving the efficiency and stability of the system. PFC inductors are commonly used in switching power supplies, inverters, and other electronic devices that require high efficiency factors to comply with international energy efficiency standards and reduce interference with the power grid.

[0003] In practical applications, in order to adjust the current waveform in the circuit, multiple PFC inductors are usually required to form a power factor correction circuit to achieve the function. However, this setting increases the size of the device and causes increased heat generation, increasing the heat dissipation burden of the device. Summary of the invention

[0004] Based on this, it is necessary to provide a dual-path magnetic integrated PFC inductor to address the technical problems of existing power factor correction circuits that affect equipment volume utilization and have a heavy heat dissipation burden.

[0005] A dual-path magnetic integrated PFC inductor comprises a base, a magnetic core, two first windings and two second windings, wherein the magnetic core, the two first windings and the two second windings are all mounted on the base, wherein the two first windings and the two second windings are respectively wound on the side surfaces of the magnetic core, thereby forming a dual-path magnetic integrated PFC inductor as a whole.

[0006] The magnetic core includes a first winding portion and a second winding portion, and the first winding portion and the second winding portion are arranged on both sides of the magnetic core along the length extension direction of the magnetic core; wherein, the two first windings are respectively wound on the first winding portion, so that the two first windings are integrated in the magnetic circuit through the first winding portion; the two second windings are respectively wound on the second winding portion, so that the two second windings are integrated in the magnetic circuit through the second winding portion.

[0007] In one embodiment, the magnetic core further includes a first connecting portion and a second connecting portion, and the first connecting portion and the second connecting portion are both disposed between the first winding portion and the second winding portion.

[0008] In one embodiment, two ends of the first connecting portion are respectively connected to corresponding ends of one side of the first winding portion and the second winding portion; two ends of the second connecting portion are respectively connected to corresponding ends of the other side of the first winding portion and the second winding portion.

[0009] In one embodiment, the two first windings are sequentially arranged and wound on the side surface of the first winding portion, and are disposed between the first connecting portion and the second connecting portion.

[0010] In one embodiment, the two second windings are sequentially arranged and wound on the side surface of the second winding portion, and are disposed between the first connecting portion and the second connecting portion.

[0011] In one embodiment, the above-mentioned magnetic core also includes a third connecting portion, which is arranged between the first winding portion and the second winding portion, and one end of the third connecting portion is connected to the middle portion of the first winding portion between the two first windings; the other end of the third connecting portion is connected to the middle portion of the second winding portion between the two second windings.

[0012] In one embodiment, the base is configured as a flat plate structure, and the magnetic core, the two first windings and the two second windings are all configured on a side surface of the flat plate structure.

[0013] In one embodiment, the base is provided with a plurality of wire outlet holes, and the plurality of wire outlet holes penetrate from one side surface of the base to the other side surface.

[0014] In one embodiment, the wire outlet ends of the two first windings and the two second windings correspond to a plurality of wire outlet holes respectively, and are led out from the corresponding wire outlet holes to the other side surface of the base.

[0015] The above-mentioned dual-path magnetic integrated PFC inductor integrates two first windings and two second windings into one by using the first winding part and the second winding part arranged in a straight line as the dual-path magnetic core, thereby effectively reducing the number of magnetic cores and the number of windings under equivalent conditions, thereby effectively reducing the size and weight of the inductor, making the inductor structure more compact, and facilitating application in space-constrained working conditions. At the same time, through dual-path magnetic integration, the loss of the magnetic core and the winding can be effectively reduced, which helps to reduce temperature rise, improve heat dissipation performance, and improve the overall efficiency of the system, thereby helping to extend the service life of the dual-path stimulated PFC inductor of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the structure of a dual-path magnetic integrated PFC inductor in one embodiment; Figure 2 FIG. 4 is a schematic diagram of the structure of a dual-path magnetic integrated PFC inductor in an embodiment. DETAILED DESCRIPTION

[0017] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention 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 present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0018] In the description of the present invention, it should be understood that 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 indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0019] 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 invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0020] 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.

[0021] In the present invention, 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.

[0022] 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.

[0023] See also Figure 1The present invention discloses a dual-path magnetic integrated PFC inductor 10, which includes a base 100, a magnetic core 200, two first windings 300 and two second windings 400. The magnetic core 200, the two first windings 300 and the two second windings 400 are all installed on the base 100, wherein the two first windings 300 and the two second windings 400 are respectively wound on the side surfaces of the magnetic core 200, thereby forming the dual-path magnetic integrated PFC inductor 10 as a whole. Specifically, the magnetic core 200 includes a first winding portion 210 and a second winding portion 220, and the first winding portion 210 and the second winding portion 220 are arranged on both sides of the magnetic core 200 along the length extension direction of the magnetic core 200; wherein the two first windings 300 are respectively wound on the first winding portion 210, so that the two first windings 300 are integrated in the magnetic circuit through the first winding portion 210; the two second windings 400 are respectively wound on the second winding portion 220, so that the two second windings 400 are integrated in the magnetic circuit through the second winding portion 220. Compared with the traditional PFC inductor, the dual-path magnetic integrated PFC inductor 10 of the present invention integrates two first windings 300 and two second windings 400 into one by using the first winding part 210 and the second winding part 220 arranged in a straight line as the dual-path magnetic core 200, thereby effectively reducing the number of magnetic cores 200 and the number of windings under equivalent conditions, thereby effectively reducing the size and weight of the inductor, making the inductor structure more compact, and facilitating application in space-constrained working conditions. At the same time, through dual-path magnetic integration, the loss of the magnetic core 200 and the winding can be effectively reduced, which helps to reduce temperature rise, improve heat dissipation performance, and improve the overall efficiency of the system, thereby helping to extend the service life of the dual-path stimulated PFC inductor of the present invention.

[0024] Furthermore, the magnetic core 200 also includes a first connecting portion 230 and a second connecting portion 240, and the first connecting portion 230 and the second connecting portion 240 are both arranged between the first winding portion 210 and the second winding portion 220; wherein, the two ends of the first connecting portion 230 are respectively connected to the corresponding ends on one side of the first winding portion 210 and the second winding portion 220; the two ends of the second connecting portion 240 are respectively connected to the corresponding ends on the other side of the first winding portion 210 and the second winding portion 220; thus, the first connecting portion 230 and the second connecting portion 240 cooperate with the first winding portion 210 and the second winding portion 220 to form a frame-type closed magnetic circuit, thereby realizing the integration of the first winding portion 210 and the second winding portion 220.

[0025] Furthermore, the two first windings 300 are sequentially arranged and wound on the side surface of the first winding portion 210 , and are disposed between the first connecting portion 230 and the second connecting portion 240 , so that the two first windings 300 are magnetically integrated through the first winding portion 210 .

[0026] Furthermore, the two second windings 400 are sequentially arranged and wound on the side surface of the second winding portion 220 , and are disposed between the first connecting portion 230 and the second connecting portion 240 , so that the two second windings 400 are magnetically integrated through the second winding portion 220 .

[0027] Furthermore, the magnetic core 200 further includes a third connection portion 250, which is disposed between the first winding portion 210 and the second winding portion 220, and one end of the third connection portion 250 is connected to the middle of the first winding portion 210 between the two first windings 300; the other end of the third connection portion 250 is connected to the middle of the second winding portion 220 between the two second windings 400. Thus, the third connection portion 250 cooperates with the first connection portion 230 and the second connection portion 240 to form two adjacent closed magnetic circuits in combination with the first winding portion 210 and the second winding portion 220.

[0028] Furthermore, the base 100 is configured as a flat plate structure, and the magnetic core 200, the two first windings 300, and the two second windings 400 are all configured on one side surface of the flat plate structure, so that the magnetic core 200, the two first windings 300, and the two second windings 400 are more easily exposed to the external air environment, which is beneficial to the heat dissipation during the operation of the inductor. Specifically, the base 100 is provided with a plurality of outlet holes a, and the plurality of outlet holes a penetrate from one side surface of the base 100 to the other side surface; based on this, the outlet ends of the two first windings 300 and the two second windings 400 correspond to the plurality of outlet holes a one by one, and are respectively led out from the corresponding outlet holes a to the other side surface of the base 100.

[0029] In summary, the dual-path magnetic integrated PFC inductor disclosed in the present invention integrates two first windings and two second windings into one by using the first winding part and the second winding part arranged in a straight line as the dual-path magnetic core, thereby effectively reducing the number of magnetic cores and the number of windings under equivalent conditions, thereby effectively reducing the size and weight of the inductor, making the inductor structure more compact, and facilitating application in space-constrained working conditions. At the same time, through dual-path magnetic integration, the loss of the magnetic core and the winding can be effectively reduced, which helps to reduce temperature rise, improve heat dissipation performance, and improve the overall efficiency of the system, thereby helping to extend the service life of the dual-path stimulated PFC inductor of the present invention.

[0030] 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.

[0031] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A dual-circuit magnetic integrated PFC inductor, characterized in that: include: A base, a magnetic core, two first windings and two second windings, wherein the magnetic core, the two first windings and the two second windings are all mounted on the base, wherein the two first windings and the two second windings are respectively wound on the side surface of the magnetic core, thereby forming the dual-path magnetic integrated PFC inductor as a whole; The magnetic core includes a first winding portion and a second winding portion, and the first winding portion and the second winding portion are arranged on both sides of the magnetic core along the length extension direction of the magnetic core; wherein the two first windings are respectively wound on the first winding portion, so that the two first windings are integrated in the magnetic circuit through the first winding portion; and the two second windings are respectively wound on the second winding portion, so that the two second windings are integrated in the magnetic circuit through the second winding portion.

2. The dual-circuit magnetic integrated PFC inductor according to claim 1, characterized in that: The magnetic core further includes a first connecting portion and a second connecting portion, wherein the first connecting portion and the second connecting portion are both disposed between the first winding portion and the second winding portion.

3. The dual-circuit magnetic integrated PFC inductor according to claim 2, characterized in that: Two ends of the first connection portion are respectively connected to corresponding ends of one side of the first winding portion and the second winding portion; two ends of the second connection portion are respectively connected to corresponding ends of the other side of the first winding portion and the second winding portion.

4. The dual-circuit magnetic integrated PFC inductor according to claim 3, characterized in that: The two first windings are arranged in sequence and wound on the side surface of the first winding portion, and are disposed between the first connecting portion and the second connecting portion.

5. The dual-circuit magnetic integrated PFC inductor according to claim 4, characterized in that: The two second windings are arranged in sequence and wound on the side surface of the second winding portion, and are disposed between the first connecting portion and the second connecting portion.

6. The dual-circuit magnetic integrated PFC inductor according to claim 5, characterized in that: The magnetic core further includes a third connecting portion, and the third connecting portion is disposed between the first winding portion and the second winding portion.

7. The dual-circuit magnetic integrated PFC inductor according to claim 6, characterized in that: One end of the third connection portion is connected to the middle of the first winding portion between the two first windings; the other end of the third connection portion is connected to the middle of the second winding portion between the two second windings.

8. The dual-circuit magnetic integrated PFC inductor according to claim 7, characterized in that: The base is configured as a flat plate structure, and the magnetic core, the two first windings, and the two second windings are all configured on a side surface of the flat plate structure.

9. The dual-circuit magnetic integrated PFC inductor according to claim 8, characterized in that: The base is provided with a plurality of wire outlet holes, and the plurality of wire outlet holes penetrate from one side surface of the base to the other side surface.

10. The dual-circuit magnetic integrated PFC inductor according to claim 9, characterized in that: The outlet ends of the two first windings and the two second windings correspond to the plurality of outlet holes one by one, and are respectively led out from the corresponding outlet holes to the other side surface of the base.

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