CN212010668U

CN212010668U - PFC inductance

Info

Publication number: CN212010668U
Application number: CN202020923292.7U
Authority: CN
Inventors: 修方东
Original assignee: Qingdao Qiu Shi Sheng Science And Technology Co ltd
Current assignee: Qingdao Qiu Shi Sheng Science And Technology Co ltd
Priority date: 2020-05-27
Filing date: 2020-05-27
Publication date: 2020-11-24
Anticipated expiration: 2030-05-27

Abstract

The utility model provides a PFC inductance, including an annular magnetic core body, the interval is provided with three wire winding group on the magnetic core body: first winding group, second winding group and third winding group, be provided with the second pin between first pin, second winding group and the third winding group between first winding group and the second winding group, be provided with the third pin between third winding group and the first winding group, and still be provided with connecting portion between first winding group and the third winding group, just third winding group, first winding group, second winding group and third winding group are enameled copper wire winding, the utility model discloses can reduce the volume of inductance, guarantee the life of inductance, equipment convenient and fast material resources of using manpower sparingly improve production efficiency.

Description

PFC inductance

Technical Field

The utility model belongs to the technical field of electron device, in particular to PFC inductance.

Background

The PFC is called "Power Factor Correction" in all its english terms, and means "Power Factor Correction", and the Power Factor refers to the relationship between the effective Power and the total Power consumption, that is, the ratio of the effective Power divided by the total Power consumption. The power factor can measure the effective utilization degree of the power, and when the power factor value is larger, the power utilization rate is higher. The PFC inductor is an inductor used in a PFC circuit to improve a power factor. The existing high-power PFC inductor is made of silicon steel sheets and has the defects of large volume, high temperature rise and low energy efficiency; in the production process of inductance, pack into the good coil of coiling with the silicon steel sheet in, for preventing coil and magnetic core contact and short circuit, keep apart coil and silicon steel sheet through wrap up insulating paper at silicon steel sheet surface, however because insulating paper is thinner, there is the line of easy fracture and splits, then can have coil and silicon steel sheet contact and the hidden danger of short circuit.

Therefore, in view of the above-mentioned scheme in actual manufacture and the loss part of implementing the use, and revise, improve, at the same time originally seek good spirit and theory to by the assistance of professional knowledge, experience, and after many ways are ingeniously thought, experimental, the side is created the utility model discloses, provide a PFC inductance again very much, can reduce the volume of inductance, guarantee the life of inductance, equipment convenient and fast saves manpower and materials, improves production efficiency.

SUMMERY OF THE UTILITY MODEL

The utility model provides a PFC inductance has solved the problem among the prior art.

The technical scheme of the utility model is realized like this: the PFC inductor comprises an annular magnetic core body, wherein three winding groups are arranged on the magnetic core body at intervals: first wire winding group, second wire winding group and third wire winding group, be provided with the second pin between first wire winding group and the second wire winding group, second wire winding group and the third wire winding group between be provided with the third pin between third wire winding group and the first wire winding group, and still be provided with connecting portion between first wire winding group and the third wire winding group, just third wire winding group, first wire winding group, second wire winding group and third wire winding group are enameled copper wire winding.

In a preferred embodiment, the first winding set, the second winding set and the third winding set are in a double-wire parallel winding structure, and adjacent two wires are insulated from each other.

In a preferred embodiment, the magnetic core bodies are all iron cores.

In a preferred embodiment, the first lead is an octagonal lead.

In a preferred embodiment, the connecting portion is formed by extending one surface of the core body, and a thickness of the connecting portion is smaller than a thickness of the core body.

In a preferred embodiment, the connecting portion is made of a tin-free material.

In a preferred embodiment, the rated current of the first winding group, the second winding group and the third winding group is 30A.

As a preferred embodiment, the first pin, the second pin and the third pin are all provided with threaded holes, and the threaded holes of the first pin, the second pin and the third pin are respectively provided with a first screw, a second screw and a third screw.

In a preferred embodiment, the sum of the winding turns of the first winding group, the second winding group and the third winding group is 40 turns.

In a preferred embodiment, the number of winding turns of the first winding group is 14, and the number of winding turns of the second winding group and the third winding group are all 13.

After the technical scheme is adopted, the beneficial effects of the utility model are that:

1. the mode of enameled wires is adopted, so that the method that silicon wafers are arranged in different winding interlayers is avoided, the production cost is reduced, the convenience of product production and assembly is improved, and the production efficiency is greatly improved;

2. rated current reaches 30A, when IDC is 0A, L is 215uH/Min, 25Khz, and voltage is 0.3V;

3. the coil adopts a three-pin structure, can adapt to electronic elements such as a triode, a buzzer, a power supply and the like, and has strong pertinence;

4. the connecting part is made of a tin-free material, so that the outer insulating layer of the wire, which is caused by the heating of the inductor, can be prevented from being stained on the surface of the connecting part, the connecting part is prevented from being damaged, and the subsequent use is facilitated.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a schematic structural view of a viewing angle of the present invention;

fig. 2 is a schematic structural diagram of another viewing angle of the present invention.

In the figure, 1-third pin; 2-a magnetic core body; 3-a third winding group; 4-a connecting part; 5-thread end; 6-a first screw; 7-a first pin; 8-a first winding group; 9-a second screw; 10-a second pin; 11-a second winding group; 12-third screw.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1, the PFC inductor includes an annular magnetic core 2, and three winding groups are spaced on the magnetic core 2: first winding group 8, second winding group 11 and third winding group 3, be provided with first pin 7 between first winding group 8 and the second winding group 11, be provided with second pin 10 between second winding group 11 and the third winding group 3, be provided with third pin 1 between third winding group 3 and the first winding group 8, and still be provided with connecting portion 4 between first winding group 8 and the third winding group 3, just third winding group 3, first winding group 8, second winding group 11 and third winding group 3 are the enameled copper wire and are become. The first winding group 8, the second winding group 11 and the third winding group 3 are all double-wire parallel-wound structures, and two adjacent wires are arranged in an insulating mode. The magnetic core bodies 2 are all iron cores. The first pins 7 are octagonal pins. The connecting portion 4 is formed by extending one surface of the core body 2, and the thickness of the connecting portion 4 is smaller than that of the core body 2. The connecting portion 4 is made of a non-tin material. The rated current of the first winding group 8, the second winding group 11 and the third winding group 3 is 30A. Threaded holes are formed in the first pin 7, the second pin 10 and the third pin 1, and a first screw 6, a second screw 9 and a second screw 12 are arranged on the threaded holes of the first pin 7, the second pin and the third pin 1 respectively. The sum of the winding turns of the first winding group 8, the second winding group 11 and the third winding group 3 is 40 turns. The number of winding turns of the first winding group 8 is 14, and the number of winding turns of the second winding group 11 and the third winding group 3 is 13.

The working principle of the PFC inductor is as follows: the starting positions and the wire ends 5 of the three winding groups are positioned on the connecting part 4, and the winding is in the form of enameled wires, so that a method that silicon wafers are arranged in the middle interlayers of different windings is avoided, the production cost is reduced, the convenience of product production and assembly is improved, and the production efficiency is greatly improved; rated current reaches 30A, when IDC is 0A, L is 215uH/Min, 25Khz, and voltage is 0.3V; the coil adopts a three-pin structure, can adapt to electronic elements such as a triode, a buzzer, a power supply and the like, and has strong pertinence; the connecting part 4 is made of a non-tin material, so that the outer insulating layer of the wire, which is caused by induction heating, can be prevented from being stained on the surface of the connecting part, the connecting part is prevented from being damaged, and subsequent use is facilitated.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A PFC inductance is characterized by comprising an annular magnetic core body, wherein three winding groups are arranged on the magnetic core body at intervals: first wire winding group, second wire winding group and third wire winding group, be provided with the second pin between first wire winding group and the second wire winding group, second wire winding group and the third wire winding group between be provided with the third pin between third wire winding group and the first wire winding group, and still be provided with connecting portion between first wire winding group and the third wire winding group, just third wire winding group, first wire winding group, second wire winding group and third wire winding group are enameled copper wire winding.

2. The PFC inductor of claim 1, wherein the first winding, the second winding and the third winding are parallel-wound two wires, and two adjacent wires are insulated from each other.

3. The PFC inductor of claim 2, wherein the magnetic core bodies are each a ferrite core.

4. The PFC inductor of claim 3, wherein the first pin is an octagonal pin.

5. The PFC inductor of claim 4, wherein the connection portion is formed by extending one surface of the core body, and wherein the connection portion has a thickness less than a thickness of the core body.

6. The PFC inductor of claim 5, wherein the connection portion is a non-tin-wetting material.

7. The PFC inductance of claim 6, wherein the first, second, and third winding groups have a current rating of 30A.

8. The PFC inductor of claim 7, wherein the first pin, the second pin, and the third pin are each provided with a threaded hole, and the threaded holes of the first pin, the second pin, and the third pin are each provided with a first screw, a second screw, and a third screw.

9. The PFC inductor of claim 8, wherein a sum of winding turns of the first, second and third winding sets is 40 turns.

10. The PFC inductor of claim 9, wherein the first winding group has 14 winding turns, and the second winding group and the third winding group have 13 winding turns.