阅读说明：本技术 一种组合式pfc差模电感 (Combined PFC differential mode inductor ) 是由 杨大圆 庞雷宇 于 2021-02-26 设计创作，主要内容包括：本发明公开了一种组合式PFC差模电感,其特征在于：包括两块第一磁芯、两块第二磁芯、至少一块第三磁芯以及一个线圈绕组,两块所述第一磁芯上下平行设置,两块所述第二磁芯竖向并排设于两块所述第一磁芯之间,所述线圈绕组绕制成环状框架结构,所述线圈绕组设置在两块所述第一磁芯之间,所述第三磁芯设于所述线圈绕组的内环侧。本发明提供了一种结构紧凑、体积小、可根据不同功率需求而作调整的组合式PFC差模电感。(The invention discloses a combined PFC differential mode inductor, which is characterized in that: including two first magnetic cores, two second magnetic cores, an at least third magnetic core and a coil winding, two parallel arrangement about the first magnetic core, two the second magnetic core is vertical to be located two side by side between the first magnetic core, the annular frame structure is coiled to the coil winding, the coil winding sets up two between the first magnetic core, the third magnetic core is located the inner ring side of coil winding. The invention provides a combined PFC differential mode inductor which is compact in structure, small in size and capable of being adjusted according to different power requirements.)

1. A combined PFC differential mode inductor is characterized in that: including two first magnetic cores, two second magnetic cores, an at least third magnetic core and a coil winding, two parallel arrangement about the first magnetic core, two the second magnetic core is vertical to be located two side by side between the first magnetic core, the annular frame structure is coiled to the coil winding, the coil winding sets up two between the first magnetic core, the third magnetic core is located the inner ring side of coil winding.

2. The combined PFC differential mode inductor of claim 1, wherein the second magnetic core is rectangular; the two second magnetic cores are arranged in parallel, and the long sides of the two second magnetic cores are respectively connected and matched with the two first magnetic cores which are arranged up and down.

3. The combined PFC differential mode inductor of claim 2, wherein the first magnetic cores are rectangular parallelepiped shaped and the long sides of the two first magnetic cores are attached in a mating manner corresponding to the long sides of the two second magnetic cores.

4. The combined PFC differential inductor of claim 3, wherein the third cores are rectangular parallelepiped shaped, and the long sides of each of the third cores are arranged in parallel corresponding to the long sides of the second core.

5. A combined PFC differential-mode inductor according to any of claims 1 to 4, characterised in that the coil winding is formed in a generally racetrack configuration using flat wire winding.

6. The combined PFC differential mode inductor of claim 1, wherein the first core, the second core, the third core, and the coil winding are secured together by glue.

7. The combined PFC differential mode inductor of claim 1, further comprising a base plate, the base plate having a plurality of through holes; each first magnetic core, second magnetic core, third magnetic core and the coil winding set up in the bed plate upside, each coil winding extends and is provided with the pin in order to pass through the through-hole and wear to locate the bed plate downside.

8. The combined PFC differential mode inductor of claim 7, wherein the leads comprise a first lead and a second lead, the first lead and the second lead being adhesively secured to the base plate by glue through the through hole.

9. The combined PFC differential mode inductor of claim 8, wherein the first pin and the second pin are threaded into the vias to form a staggered arrangement.

10. The combined PFC differential mode inductor of claim 1, wherein the first, second, and third magnetic cores are each formed of a high saturation flux density material.

Technical Field

The invention relates to the technical field of PFC inductors, in particular to a combined PFC differential mode inductor.

Background

Currently, electronic devices are continuously moving toward smaller size, higher integration, and higher efficiency. PFC inductors, one of the key components in electronic devices, have become smaller in size, lighter in weight, and improved in efficiency, and are always the direction of efforts of the skilled person. The traditional annular inductor has the advantages of large volume, low production efficiency, low utilization rate of magnetic materials and high production cost.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a combined PFC differential mode inductor which has a compact structure and a small volume and can be adjusted according to different power requirements.

The utility model provides a modular PFC differential mode inductance, includes two first magnetic cores, two second magnetic cores, an at least third magnetic core and a coil winding, two parallel arrangement about the first magnetic core, two the second magnetic core is vertical locates two side by side between the first magnetic core, the annular frame structure is become in the coil winding coiling, the coil winding sets up two between the first magnetic core, the third magnetic core is located the inner ring side of coil winding.

Further, the second magnetic core is in a cuboid shape; the two second magnetic cores are arranged in parallel, and the long sides of the two second magnetic cores are respectively connected and matched with the two first magnetic cores which are arranged up and down.

Furthermore, the first magnetic cores are cuboid, and the long side edges of the two first magnetic cores are matched and connected corresponding to the long side edges of the two second magnetic cores.

Further, the third magnetic cores are rectangular, and the long side of each third magnetic core is arranged in parallel corresponding to the long side of the second magnetic core.

Furthermore, the coil winding is made of flat wires and arranged in a runway shape integrally.

Further, the first magnetic core, the second magnetic core, the third magnetic core and the coil winding are fixed through glue.

The base plate is provided with a plurality of through holes; each first magnetic core, second magnetic core, third magnetic core and the coil winding set up in the bed plate upside, each coil winding extends and is provided with the pin in order to pass through the through-hole and wear to locate the bed plate downside.

Further, the pins comprise a first pin and a second pin, and the first pin and the second pin are bonded and fixed on the base plate through the through holes by glue.

Further, the first pin and the second pin are connected in the through holes in a penetrating mode to form a staggered arrangement.

Further, the material of each of the first magnetic core, the second magnetic core and the third magnetic core is a high saturation magnetic flux density material.

The invention has the beneficial effects that: the invention has the beneficial effects that:

1. through the magnetic core structure of combination formula, can change the volume and the quantity of magnetic core according to the demand to change the magnetic permeability of magnetic core, and then realize inductive power's adjustment.

2. The coil winding is wound by adopting flat wires, so that the coil winding adopts a winding machine winding process, and the production automation level is improved. In addition, the cross section of the flat wire is rectangular, so that the current conduction capability can be improved.

3. The inductor has the advantages of compact structure, small size and convenience in automatic production.

Drawings

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

fig. 2 is a schematic side view of a combined PFC differential mode inductor according to an embodiment of the present invention;

FIG. 3 is a schematic front view of a coil winding according to an embodiment of the present invention;

FIG. 4 is a schematic side view of a coil winding according to an embodiment of the present invention;

fig. 5 is a schematic side view of a combined PFC differential mode inductor according to a second embodiment of the present invention.

Description of reference numerals: 1. a first magnetic core; 2. a second magnetic core; 3. a third magnetic core; 4. a coil winding; 5. a first pin; 6. a second pin; 7. a base plate; 8. and a through hole.

Detailed Description

In order to make the technical solution, the purpose and the advantages of the present invention more apparent, the present invention will be further explained with reference to the accompanying drawings and embodiments.

The first embodiment is as follows:

as shown in fig. 1-4, a combined PFC differential mode inductor includes two first magnetic cores 1, two second magnetic cores 2, two third magnetic cores 3, and a coil winding 4, wherein the two first magnetic cores 1 are arranged in parallel, and the two second magnetic cores 2 are vertically arranged between the two first magnetic cores 1. The second magnetic core 2 is in a cuboid shape; two second magnetic cores 2 are arranged in parallel, and the long sides of two second magnetic cores 2 are respectively connected and matched with two first magnetic cores 1 arranged up and down. The first magnetic cores 1 are rectangular, and the long side edges of the two first magnetic cores 1 are matched and connected corresponding to the long side edges of the two second magnetic cores 2. The third cores 3 are rectangular parallelepiped, and the long side of each third core 3 is arranged in parallel with the long side of the second core 2.

The coil winding 4 is made of flat wires which are wound into a runway shape as a whole, and the cross section of each flat wire is rectangular, so that the current conduction capability can be improved. The coil winding 4 is arranged between the two first magnetic cores 1, and the two third magnetic cores 3 are arranged on the inner ring side of the coil winding 4.

The first magnetic core 1, the second magnetic core 2, the third magnetic core 3 and the coil winding 4 are fixed by glue, so that the relative position relation between the first magnetic core 1, the second magnetic core 2, the third magnetic core 3 and the coil winding 4 is ensured.

The base plate 7 is provided with a plurality of through holes 8; each of the first magnetic core 1, the second magnetic core 2, the third magnetic core 3, and the coil winding 4 is disposed on the upper side of the base plate 7, and each of the coil windings 4 is extended with a pin to pass through the through hole 8 and to be disposed on the lower side of the base plate 7. The pins comprise a first pin 5 and a second pin 6, and the first pin 5 and the second pin 6 are bonded and fixed on the base plate 7 through glue via a through hole 8. The first pin 5 and the second pin 6 are penetrated in the through holes 8 to form a staggered arrangement. Optionally, the first pin 5 serves as a current input and the second pin 6 serves as a current output.

The first magnetic core 1, the second magnetic core 2 and the third magnetic core 3 are made of high saturation magnetic flux density materials, specifically iron-based amorphous magnetic cores. The iron-based amorphous magnetic core has the characteristics of high saturation magnetic flux density, small volume, low loss and uniform air gap, and the redundant air gap loss cannot be increased.

Example two:

as shown in fig. 5, the second embodiment is different from the first embodiment in the number of the third magnetic cores 3, the number of the third magnetic cores 3 of the second embodiment is three, three third magnetic cores 3 are vertically arranged side by side between two first magnetic cores 1 and are arranged on the inner ring side of the coil winding 4, the long side sides of the three third magnetic cores 3 are arranged in parallel corresponding to the long side of the second magnetic core 2, and the rest of the structure is the same as that of the first embodiment. This embodiment makes the magnetic permeability of magnetic core increase through addding the quantity of second magnetic core 2, and then improves the power of inductance.

The invention has the beneficial effects that:

1. through the magnetic core structure of combination formula, can change the volume and the quantity of magnetic core according to the demand to change the magnetic permeability of magnetic core, and then realize inductive power's adjustment.

2. The coil winding is wound by adopting flat wires, so that the coil winding adopts a winding machine winding process, and the production automation level is improved. In addition, the cross section of the flat wire is rectangular, so that the current conduction capability can be improved.

3. The inductor has the advantages of compact structure, small size and convenience in automatic production.

The above description is only a preferred embodiment of the present invention, and those skilled in the art may still modify the described embodiment without departing from the implementation principle of the present invention, and the corresponding modifications should also be regarded as the protection scope of the present invention.