CN210778171U

CN210778171U - PFC inductance and power module

Info

Publication number: CN210778171U
Application number: CN201922231923.9U
Authority: CN
Inventors: 贺旭辉; 胡荣辉
Original assignee: Luliang Avionics New Energy Co ltd
Current assignee: Luliang Avionics New Energy Co ltd
Priority date: 2019-12-06
Filing date: 2019-12-06
Publication date: 2020-06-16
Anticipated expiration: 2029-12-06

Abstract

The utility model provides a PFC inductance and power module, PFC inductance include the skeleton, set up in annular magnetic core on the skeleton and around locating coil on the annular magnetic core, the skeleton include the bottom plate with set up in installation department on the bottom plate, the installation department is used for the installation annular magnetic core, the bottom plate is the rectangle, the axis of annular magnetic core with the long limit of rectangle perpendicular and with the broadside of rectangle is parallel, the first end section of coil is located axial one side of annular magnetic core, the second end section of coil is located the axial opposite side of annular magnetic core, be provided with first via hole and second via hole on the bottom plate, be used for supplying respectively the first end section with the second end section is worn out, and the part of wearing out is used for forming the terminal. The utility model provides a PFC inductance can make the inductance value of PFC inductance very little along with the current change in the circuit, improves the stability in use of the power module who adopts it.

Description

PFC inductance and power module

Technical Field

The utility model relates to an inductance technical field, concretely relates to PFC inductance and power module.

Background

PFC is an abbreviation for english "powerfactor correction," and the translation is "power factor correction," which refers to adjustment by a circuit structure, generally to increase a power factor in a circuit, reduce reactive power in the circuit, and improve an effect of power conversion. In short, the PFC circuit can be applied to save more power. The PFC circuit is used for a power supply module in a power supply product or an electronic device.

PFC inductance is an inductor used to make up a PFC circuit, and is a category of inductance that is named in terms of the function that is implemented. The same nomenclature as that for PFC inductors is that for filter inductors, boost inductors, choke inductors, and so on. The PFC inductor generally functions in an inductance compensation type PFC circuit and an active PFC circuit, and mainly functions in rectification.

In an inductance compensation type PFC circuit, a PFC inductance is used for cooperating with other elements to reduce the phase difference between fundamental current and voltage of alternating current input. The PFC inductor functions as a rectifier and filter.

The inductor in the active PFC circuit is used almost, namely, the input current is rectified by the PFC inductor and filtered by the capacitor, and the output voltage changes tend to be synchronous. The reactive power consumption of electric energy in the inductance and capacitance device can be effectively reduced, and the purpose of improving power factors is achieved.

The PFC inductor does not have much requirements on the type and packaging form of the inductor, and an engineer generally selects the inductor according to the actual use environment of the PFC inductor. Both the chip inductor and the card inductor can be used as the PFC inductor, but generally, the PFC inductor can pass a sufficiently large current and reduce self-loss as much as possible on the basis of satisfying a proper inductance. Some bulky inductors are more likely to be PFC inductors.

The inductance value of the existing PFC inductor is greatly changed along with the current in a circuit, so that the reliability of a power supply using the PFC inductor is influenced.

SUMMERY OF THE UTILITY MODEL

In view of this, an object of the present invention is to provide a PFC inductor and a power module, so as to solve the problem that the inductance of the conventional PFC inductor varies greatly with the current in the circuit.

In order to solve the above problem, the embodiments of the present disclosure provide a PFC inductor. In some embodiments, the PFC inductor includes a skeleton, an annular magnetic core disposed on the skeleton, and a coil wound on the annular magnetic core, the skeleton includes a bottom plate and a mounting portion disposed on the bottom plate, the mounting portion is used for mounting the annular magnetic core, the bottom plate is rectangular, an axis of the annular magnetic core is perpendicular to a long side of the rectangle and parallel to a wide side of the rectangle, a first end section of the coil is located on one axial side of the annular magnetic core, a second end section of the coil is located on the other axial side of the annular magnetic core, the bottom plate is provided with a first via hole and a second via hole, the first end section and the second end section are respectively worn out, and a worn-out portion is used for forming a terminal.

Preferably, the mounting portion is provided with a clamping jaw for clamping with the annular magnetic core.

Preferably, an insulating partition structure is further included between the first end section and the second end section.

Preferably, the insulating partition structure is an annular structure sleeved on the annular magnetic core.

Preferably, the insulating separation structure with the installation department structure as an organic whole, be provided with the opening on the insulating separation structure for annular magnetic core card is gone into.

Preferably, a guide inclined plane is arranged on the notch.

Preferably, the insulating partition structure constitutes the jaw.

Preferably, the bottom plate with the installation department is the components of a whole that can function independently structure, be provided with the locating hole on the bottom plate, be provided with the location arch on the installation department, still be provided with first electrically conductive terminal pipe and second electrically conductive terminal pipe on the bottom plate, first electrically conductive terminal pipe with first via hole intercommunication, second electrically conductive terminal pipe with second via hole intercommunication, the bottom plate through the mode of moulding plastics with first electrically conductive terminal pipe, second electrically conductive terminal pipe form an organic whole structure, work as the location arch inserts when the locating hole, first end section with second end section inserts respectively first electrically conductive terminal pipe with in the second electrically conductive terminal pipe.

Preferably, the first through hole and the second through hole respectively form two positioning holes, two positioning protrusions are correspondingly arranged, and the first end section and the second end section respectively penetrate through the two positioning protrusions.

The embodiment of the disclosure also provides a power supply module. In some embodiments, the power supply module includes a PFC inductor as described above.

The utility model has the advantages that: the utility model provides a PFC inductance sets up the axis of annular magnetic core into perpendicular and parallel with the broadside of rectangle bottom plate with the long limit of rectangle bottom plate, the first end section of coil is located axial one side of annular magnetic core, the second end section of coil is located the axial opposite side of annular magnetic core, two end sections of coil are located the axial both sides of annular magnetic core respectively promptly, thereby can avoid electromagnetic interference to form common mode route, can make the inductance value of PFC inductance very little along with the current change in the circuit in addition, improve the stability in use of the power module who adopts it.

Drawings

Fig. 1 is a front view of a PFC inductor according to an embodiment of the present invention;

fig. 2 is a top view of a PFC inductor according to an embodiment of the present invention;

fig. 3 is a bottom view of a bottom plate of a PFC inductor according to an embodiment of the present invention.

Wherein:

1. a framework; 11. a base plate; 111. a first via hole; 112. a second via hole; 12. an installation part; 2. an annular magnetic core; 3. a coil; 31. a first end section; 32. a second end section; 4. a first conductive terminal tube.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples.

To solve the problems of the conventional PFC inductor, the present application provides a PFC inductor, as shown in fig. 1 to 3, the PFC inductor includes a frame 1, an annular magnetic core 2 disposed on the frame 1, and a coil 3 wound on the annular magnetic core 2, the frame 1 includes a bottom plate 11 and an installation portion 12 disposed on the bottom plate 11, the installation portion 12 is used for installing the annular magnetic core 2, the bottom plate 11 is rectangular, an axis of the annular magnetic core 2 is perpendicular to a long side of the rectangle and parallel to a wide side of the rectangle, a first end section 31 of the coil 3 is located on one axial side of the annular magnetic core 2, a second end section 32 of the coil 3 is located on the other axial side of the annular magnetic core 2, the bottom plate 11 is provided with a first via hole 111 and a second via hole 112 for the first end section 31 and the second end section 32 to penetrate out, the punched-out part is used for forming a terminal. Because the axis of the annular magnetic core 2 is set to be perpendicular to the long side of the rectangular bottom plate 11 and parallel to the wide side of the rectangular bottom plate 11, the first end section 31 of the coil 3 is positioned on one axial side of the annular magnetic core 2, the second end section 32 of the coil 3 is positioned on the other axial side of the annular magnetic core 2, namely, the two end sections of the coil are respectively positioned on two axial sides of the annular magnetic core 2, so that the electromagnetic interference can be avoided to form a common mode path, in addition, the inductance value of the PFC inductance is very small along with the current change in the circuit, and the use stability of the power module adopting the PFC inductance is improved.

The mounting portion 12 and the annular magnetic core 2 may be connected in any manner, for example, may be connected in an adhesive manner, and for the convenience of disassembly and assembly, it is preferable that a clamping jaw (not shown in the figure) is disposed on the mounting portion 12 to be clamped with the annular magnetic core 2.

Further preferably, an insulating separation structure (not shown in the figure) is further included, and is located between the first end section 31 and the second end section 32, and the first end section 31 and the second end section 32 are separated by the insulating separation structure, so that the electromagnetic interference can be further prevented from forming a common mode path.

The insulating partition structure may be any structure that facilitates the separation between the first end section 31 and the second end section 32, such as a partition sheet, and in order to improve the separation effect, in a preferred embodiment, the insulating partition structure is a ring-shaped structure sleeved on the ring-shaped magnetic core 2.

For the convenience of processing, the insulating separation structure and the mounting part 12 are of an integral structure, and the insulating separation structure is provided with a notch for the annular magnetic core 2 to be clamped in.

In order to facilitate the installation of the annular magnetic core 2, preferably, the notch is provided with a guiding inclined plane, and the clamping of the annular magnetic core 2 is guided by the guiding inclined plane.

In order to further simplify the structure, it is further preferable that the insulating separation structure constitutes the jaw, so that the insulating separation structure not only realizes the separation function, but also realizes the installation of the annular magnetic core 2, so that the structure is simpler, the processing and the manufacturing are convenient, the production cost is reduced, and the production efficiency is improved.

Further preferably, the bottom plate 11 and the mounting portion 12 are of a split structure, a positioning hole is formed in the bottom plate 11, a positioning protrusion is formed in the mounting portion 12, a first conductive terminal tube 4 and a second conductive terminal tube are further arranged on the bottom plate 11, the first conductive terminal tube 4 is communicated with the first via hole 111, the second conductive terminal tube is communicated with the second via hole 112, the bottom plate 11 is integrated with the first conductive terminal tube 4 and the second conductive terminal tube in an injection molding manner, and when the positioning protrusion is inserted into the positioning hole, the first end section 31 and the second end section 32 are respectively inserted into the first conductive terminal tube 4 and the second conductive terminal tube. The bottom plate 11 and the mounting portion 12 are provided separately, so that the processing process can be simplified.

Further preferably, the first through hole 111 and the second through hole 112 respectively form two positioning holes, two positioning protrusions are correspondingly arranged, and the first end section 31 and the second end section 32 respectively penetrate through the two positioning protrusions, so that the structure can be further simplified, and the installation convenience is improved.

Further, the present application also provides a power supply module, which includes the PFC inductor as described above.

The above embodiments are only used for illustrating the present invention, and not for limiting the present invention, and those skilled in the relevant technical field can make various changes and modifications without departing from the spirit and scope of the present invention, so that all equivalent technical solutions also belong to the scope of the present invention, and the protection scope of the present invention should be defined by the claims.

Claims

1. The utility model provides a PFC inductance, its characterized in that, include the skeleton, set up in annular magnetic core on the skeleton and around locating coil on the annular magnetic core, the skeleton include the bottom plate with set up in installation department on the bottom plate, the installation department is used for the installation annular magnetic core, the bottom plate is the rectangle, the axis of annular magnetic core with the long limit of rectangle perpendicular and with the broadside of rectangle is parallel, the first end section of coil is located axial one side of annular magnetic core, the second end section of coil is located the axial opposite side of annular magnetic core, be provided with first via hole and second via hole on the bottom plate, be used for supplying respectively first end section with the second end section is worn out, and the part of wearing out is used for forming the terminal.

2. The PFC inductor of claim 1, wherein the mounting portion is provided with a clamping jaw for clamping with the annular magnetic core.

3. The PFC inductor of claim 2, further comprising an insulating separation structure between the first end section and the second end section.

4. The PFC inductor of claim 3, wherein the insulation separation structure is a ring structure sleeved on the annular magnetic core.

5. The PFC inductor of claim 4, wherein the insulating partition structure and the mounting portion are of an integral structure, and the insulating partition structure is provided with a notch for the annular magnetic core to be clamped into.

6. The PFC inductor of claim 5, wherein the notch is provided with a guide ramp.

7. A PFC inductor according to any of claims 4 to 6, wherein the insulating partition structure constitutes the claw.

8. The PFC inductor according to any one of claims 1 to 6, wherein the base plate and the mounting portion are of a split structure, the base plate is provided with a positioning hole, the mounting portion is provided with a positioning protrusion, the base plate is further provided with a first conductive terminal tube and a second conductive terminal tube, the first conductive terminal tube is communicated with the first via hole, the second conductive terminal tube is communicated with the second via hole, the base plate is formed into an integrated structure with the first conductive terminal tube and the second conductive terminal tube by injection molding, and when the positioning protrusion is inserted into the positioning hole, the first end section and the second end section are respectively inserted into the first conductive terminal tube and the second conductive terminal tube.

9. The PFC inductor according to claim 8, wherein the first and second via holes respectively form two positioning holes, two positioning protrusions are correspondingly disposed, and the first and second end sections respectively penetrate through the two positioning protrusions.

10. A power supply module comprising a PFC inductor according to any of claims 1 to 9.