PFC inductor structure

Abstract

The utility model discloses a PFC (Power Factor Correction) inductor structure, which belongs to the technical field of magnetic core components and comprises a bearing part, a magnetic core, a winding framework, a winding, a connecting sheet and a pin, the two magnetic cores are arranged at the two ends of the bearing part respectively and are oppositely connected in an attached mode. The two winding frameworks are movably connected between the two magnetic cores in parallel in a sleeved mode, and a winding is arranged on each winding framework. The end parts of the same side surfaces of the two parallel windings are shielded and limited on the winding frameworks through connecting pieces, and the two connecting pieces are respectively and oppositely arranged to surround the two windings on the two corresponding winding frameworks. And the plurality of pins are uniformly arranged below the connecting sheet, and each pin is connected with the connecting sheet and the pin. According to the PFC inductor, the two magnetic cores are arranged on the bearing part, and the two winding frameworks and the windings are arranged on the magnetic cores in a sleeving manner, so that induced electromotive force energy generated by a conductor in a single product is enhanced, the purpose of providing a relatively large inductance value in a to-be-loaded state, a light load state or a full load state is achieved, and the working efficiency of the PFC inductor is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of magnetic core components, in particular to a PFC inductor structure. Background Technique

[0002] In current power supplies, a phase difference between current and voltage will form harmonic current, and due to the existence of harmonic current, the total power consumption, that is, the apparent power, is much higher than the effective power; thus causing a loss of exchange power, and further resulting in a large waste of electric energy. Therefore, in order to suppress harmonics, a power factor corrector, that is, a PFC inductor, is required in power supply design to improve the power factor of the circuit. The power factor refers to the ratio of the effective power to the total power consumption.

[0003] Traditional PFC inductors mainly include a magnetic core stacked by cold-rolled silicon steel sheets. The magnetic core is of UU type, and leads are led out after windings are wound around the magnetic core. The rated current, as a main parameter of the inductor, refers to the maximum current value that the inductor can withstand under the allowed working environment. In current practical applications, some high-power circuits have relatively high requirements for the rated current of the inductor; therefore, large-current special inductors have emerged. At present, PFC circuit inductors are mainly wound by the method of "O"-type iron-silicon-aluminum magnetic core + enameled wire winding, and its defect is that it is easy to generate large battery interference in high-power circuits.

[0004] Based on this, Chinese Patent CN109036782A discloses a PFC circuit inductor, which includes a bracket, a wound coil, iron-silicon-aluminum sheets, a magnetic core and a packaging cover. The bracket includes a cylinder and a square support plate fixedly installed at the bottom of the cylinder. A wound coil with a multi-layer and multi-turn stacked winding structure is wound on the cylinder. Two leads of the wound coil are respectively arranged on the left and right symmetric sides of the square support plate. The magnetic core includes a cylindrical magnetic core protrusion and an insulating base, and the insulating base is fixedly connected to the PCB board. The iron-silicon-aluminum sheets are arranged on the top of the magnetic core protrusion, and both the iron-silicon-aluminum sheets and the magnetic core protrusion are inserted into the cylinder inside the wound coil. The packaging cover is arranged outside the wound coil and is clamped on the insulating base to protect the wound coil and the magnetic core. This solution plays an effective isolation role by setting the packaging cover, can minimize the exposed coils to the greatest extent, and can minimize the interference of the magnetic flux generated in the coils to the outside, thus avoiding interference to peripheral devices.

[0005] However, the above-disclosed PFC circuit inductor still has the technical problem of low efficiency under no-load or light-load conditions. Specifically, the saturation superposition effect of the existing PFC circuit inductor is not good, which affects the upper limit of the inductor's use, thus affecting the inductance provided by the inductor under no-load or light-load conditions, and further affecting its light-load power; moreover, there is also the defect of being not easy to install and fix.

[0006] ​Summary of the Invention

[0007] Based on this, in view of the technical problem of how to improve the efficiency of the inductor under load or light load, it is necessary to provide a PFC inductor structure.

[0008] A PFC inductor structure includes: a bearing part, a magnetic core, a winding skeleton, a winding, a connecting piece, and pins; two magnetic cores are respectively arranged at both ends above the bearing part, and the two magnetic cores are connected in a relatively fitting manner. Two winding skeletons are arranged in parallel and movably sleeved between the two magnetic cores, and one winding is arranged on each winding skeleton. The ends of the two windings on the same side are limited on the winding skeleton by the connecting piece, and the two connecting pieces are respectively arranged oppositely to enclose the two windings on the two corresponding winding skeletons. A plurality of pins are evenly arranged below the connecting piece, and each pin is connected to the connecting piece and the pin.

[0009] Further, the bearing part is provided with a plate body, a right-angle guiding part, and jacks.

[0010] Furthermore, a right-angle guiding part is arranged at each of the four corners of the plate body.

[0011] Furthermore, a magnetic core is limited and connected between the two right-angle guiding parts on the same side of the plate body.

[0012] Furthermore, a plurality of jacks are evenly arranged in the plate body, and each jack is correspondingly connected to a pin in a matching manner.

[0013] Furthermore, the magnetic core has a T-shaped part and a connecting part.

[0014] Furthermore, the ends of the two T-shaped parts are connected by the connecting part.

[0015] Furthermore, the two oppositely arranged T-shaped parts are paired and connected to form an I-shaped structure.

[0016] Furthermore, a winding skeleton is sleeved between every two relatively connected T-shaped parts.

[0017] Furthermore, a connecting piece is connected between every two juxtaposed T-shaped parts.

[0018] In summary, a PFC inductor structure of the present utility model is respectively provided with a bearing part, a magnetic core, a winding skeleton, a winding, a connecting piece and pins; one magnetic core is arranged at each end above the bearing part, and the two magnetic cores are connected in a relative and fitting manner. Two winding skeletons are sleeved between the two magnetic cores in parallel and movably, and one winding is arranged on each winding skeleton. The ends of the two parallel windings on the same side are limited on the winding skeleton by the connecting piece, and the two connecting pieces are respectively arranged opposite to each other to surround the two windings on the two corresponding winding skeletons. A plurality of pins are uniformly arranged below the connecting piece, and each pin is connected to the connecting piece and the pin. By arranging two magnetic cores above the bearing part, and sleeving two winding skeletons and windings on the magnetic cores, the induced electromotive force generated by the conductor in a single product is enhanced, that is, the generation of the induced current flux is realized; the purpose of providing a larger inductance value can be achieved under no-load, light-load or full-load conditions, thereby improving the working efficiency of the PFC inductor. Therefore, a PFC inductor structure of the present utility model solves the technical problem of how to improve the no-load or light-load efficiency of the inductor. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of a PFC inductor structure of the present utility model;

[0020] Figure 2 is an exploded structural diagram of a PFC inductor structure of the present utility model

[0021] Figure 3 is a schematic structural diagram of a PFC inductor structure of the present utility model in another direction. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] In order to make the above objects, features and advantages of the present utility model more obvious and understandable, the following detailed description of the specific embodiments of the present utility model will be given with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present utility model. However, the present 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 departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0023] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present 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. Therefore, it should not be construed as a limitation to the present utility model.

[0024] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0025] In the present utility model, unless otherwise clearly specified and defined, the terms "mounted", "connected", "connected to", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0026] In the present utility model, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0027] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation.

[0028] Please refer to Figures 1 to 3 , a PFC inductor structure of the present utility model includes: a carrier portion 1, a magnetic core 2, a winding skeleton 3, a winding 4, a connecting piece 5 and pins 6; two ends of the carrier portion 1 are respectively provided with one of the magnetic cores 2, and the two magnetic cores 2 are relatively attached and connected. Two of the winding skeletons 3 are juxtaposed and movably sleeved between the two magnetic cores 2, and each of the winding skeletons 3 is provided with one of the windings 4. The ends of the two juxtaposed windings 4 on the same side are blocked and limited on the winding skeleton 3 through the connecting piece 5, and the two connecting pieces 5 are respectively oppositely arranged to surround the two windings 4 on the two corresponding winding skeletons 3. A plurality of the pins 6 are uniformly arranged below the connecting piece 5, and each of the pins 6 is connected to the connecting piece 5 and the pins 6.

[0029] Specifically, a PFC inductor structure of the present utility model is formed by respectively oppositely arranging two of the magnetic cores 2 on a carrier portion 1, and respectively sleeving one of the winding skeletons 3 between the two oppositely arranged magnetic cores 2, and then winding and arranging a wire on the winding skeleton 3 to form the winding 4. Each of the windings 4 arranged on the two winding skeletons 3 can be sealed and connected through the connecting piece 5. The connecting piece 5 then passes through the carrier portion 1 through the pins 6 and is connected to an external circuit. Thus, a PFC inductor structure of the present utility model enhances the induced electromotive potential generated by the conductor in a single product, that is, the generation of the induced current flux, by arranging two of the magnetic cores 2 on the carrier portion 1, and sleeving two winding skeletons 3 and windings 4 on the magnetic cores 2. The purpose of providing a relatively large inductance value under no-load, light-load or full-load conditions is achieved, thereby improving the working efficiency of the PFC inductor.

[0030] Furthermore, the carrying part 1 is provided with a plate body 101, a right-angle guiding part 102 and a jack 103; a right-angle guiding part 102 is arranged at each of the four corners of the plate body 101, and a magnetic core 2 is connected between two right-angle guiding parts 102 on the same side of the plate body 101 in a limiting manner. A plurality of jacks 103 are uniformly arranged in the plate body 101, and each jack 103 is correspondingly connected to a pin 6 in a matching manner. Specifically, the plate body 101 is the main carrying part of the carrying part 1, and it is mainly a plate-shaped structural member. The right-angle guiding part 102 has a right-angle shape and is fixedly connected to the corner of the plate body 101, serving as a guiding and limiting component for the magnetic core 2.

[0031] Furthermore, the magnetic core 2 has a T-shaped part 201 and a connecting part 202; the ends of the two T-shaped parts 201 are connected by the connecting part 202. The two oppositely arranged T-shaped parts 201 are paired and connected to form an I-shaped structure, and a winding skeleton 3 is sleeved between every two oppositely connected T-shaped parts 201; a connecting piece 5 is connected between every two juxtaposed T-shaped parts 201. Specifically, two winding skeletons 3 are juxtaposed and sleeved between the two magnetic cores 2, so that each winding skeleton 3 is sleeved between two oppositely arranged T-shaped parts 201. And every two oppositely connected T-shaped parts 201 are abutted to form an I-shaped structure, and the winding skeleton 3 and the winding 4 are respectively arranged in this structure.

[0032] In summary, a PFC inductor structure of the present invention is respectively provided with a carrying part 1, a magnetic core 2, a winding skeleton 3, a winding 4, a connecting piece 5 and pins 6; a magnetic core 2 is arranged at each of the two ends of the carrying part 1, and the two magnetic cores 2 are connected in a relatively fitting manner. Two winding skeletons 3 are juxtaposed and movably sleeved between the two magnetic cores 2, and a winding 4 is arranged on each winding skeleton 3. The ends of the two juxtaposed windings 4 on the same side are blocked and limited on the winding skeleton 3 by the connecting piece 5, and the two connecting pieces 5 are respectively arranged oppositely to surround the two windings 4 on two corresponding winding skeletons 3. A plurality of pins 6 are uniformly arranged below the connecting piece 5, and each pin 6 is connected to the connecting piece 5 and the pin 6. By arranging two magnetic cores 2 on the carrying part 1, and sleeving two winding skeletons 3 and windings 4 on the magnetic cores 2, the induced electromotive potential generated by the conductor in a single product is enhanced, that is, the generation of the induced current flux; the purpose of providing a large inductance value under no-load, light-load or full-load conditions is achieved, thereby improving the working efficiency of the PFC inductor. Therefore, a PFC inductor structure of the present invention solves the technical problem of how to improve the no-load or light-load efficiency of the inductor.

[0033] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as falling within the scope described in this specification.

[0034] The above-described embodiments merely represent several implementation manners of the present utility model. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the present utility model patent shall be subject to the appended claims.

Claims

1. A PFC inductor structure, characterized in that, It includes: a bearing part (1), a magnetic core (2), a winding skeleton (3), a winding (4), a connecting piece (5), and pins (6); at both ends above the bearing part (1), one of the magnetic cores (2) is provided respectively, and the two magnetic cores (2) are connected relatively and fittingly; two of the winding skeletons (3) are sleeved in parallel and movably between the two magnetic cores (2), and one of the windings (4) is provided on each of the winding skeletons (3); the ends on the same side of the two parallel windings (4) are blocked and limited on the winding skeleton (3) through the connecting piece (5), and the two connecting pieces (5) are arranged relatively respectively to surround the two windings (4) on the two corresponding winding skeletons (3); several of the pins (6) are evenly arranged below the connecting piece (5), and each of the pins (6) is connected to the connecting piece (5) and the pin 6.

2. The PFC inductor structure according to claim 1, characterized in that: The bearing part (1) is provided with a plate body (101), a right-angle guiding part (102), and a jack (103).

3. A PFC inductor structure according to claim 2, characterized in that: One of the right-angle guiding parts (102) is provided at each of the four corners of the plate body (101).

4. A PFC inductor structure according to claim 3, characterized in that: One of the magnetic cores (2) is limited and connected between the two right-angle guiding parts (102) on the same side of the plate body (101).

5. A PFC inductor structure according to claim 4, characterized in that: Several of the jacks (103) are evenly arranged in the plate body (101), and each of the jacks (103) is correspondingly and fittingly connected to one of the pins (6).

6. A PFC inductor structure according to claim 5, characterized in that: The magnetic core (2) has a T-shaped part (201) and a connecting part (202).

7. A PFC inductor structure according to claim 6, characterized in that: The ends of the two T-shaped parts (201) are connected through the connecting part (202).

8. A PFC inductor structure according to claim 7, characterized in that: The two relatively arranged T-shaped parts (201) are paired and connected to form an I-shaped structure.

9. A PFC inductor structure according to claim 8, wherein: One of the winding skeletons (3) is sleeved between every two relatively connected T-shaped parts (201).

10. A PFC inductor structure according to claim 9, characterized in that: One of the connecting pieces (5) is connected between every two juxtaposed and connected T-shaped parts (201).

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