CN208027877U

CN208027877U - A kind of novel PFC inductor

Info

Publication number: CN208027877U
Application number: CN201820612329.7U
Authority: CN
Inventors: 田林; 李翠娟
Original assignee: Shenzhen City Topsun Electronics Co Ltd
Current assignee: Shenzhen City Topsun Electronics Co Ltd
Priority date: 2018-04-26
Filing date: 2018-04-26
Publication date: 2018-10-30
Anticipated expiration: 2028-04-26

Abstract

This application discloses a kind of novel PFC inductors, it includes the first iron core, the second iron core, the first inductance coil and the second inductance coil, first iron core includes two the first cantilever arms, and the first side arm of two first cantilever arms of connection, second iron core includes two the second cantilever arms, and the second side arm of two second cantilever arms of connection, the length of the first side wall are more than the length of the second sidewall；Existing iron core is divided into the first iron core and the second iron core by the novel PFC inductor of the application, when coiling, it is assembled into respectively on the first iron core and the second iron core again after coil can first be wound, when assembling, because the length of the first iron core and the side wall of the second iron core is different, can be quickly tell needs two parts assembling, greatly increases the packaging efficiency of production line.

Description

A kind of novel PFC inductor

Technical field

This application involves electronic component fields, more particularly, to a kind of novel PFC inductor.

Background technology

PFC (Power Factor Correction) i.e. " PFC ", is mainly used to characterize electronic product to electricity The utilization ratio of energy.Power factor is higher, illustrates that the utilization ratio of electric energy is higher.Pass through the computer power of CCC certifications, it is necessary to Increase pfc circuit.Position is after second layer filtering, before full bridge rectifier.

There are two types of PFC, and one is passive PFC (also referred to as passive PFCs), and one is active PFC (also symmetrical active PFC). Phase difference reduces to improve power between fundamental current and voltage that passive PFC generally makes exchange input using inductance compensation method Factor, but the power factor of passive PFC is not very high, can only achieve 0.7-0.8；Active PFC is by inductance capacitance and electronics member device Part forms, small, can reach very high power factor, but cost to be higher by passive PFC some.

The wire winding of traditional PFC inductance, backbone winding directly from first to last once expired with stranded wire be mostly Only, not high so as to cause production efficiency.

Utility model content

The application provides a kind of improved novel PFC inductor.

According to the application's in a first aspect, the application provides a kind of novel PFC inductor comprising the first iron core, second Iron core, the first inductance coil and the second inductance coil, first iron core include two the first cantilever arms, and two institutes of connection The first side arm of the first cantilever arm is stated, second iron core includes two the second cantilever arms, and connects two described second and stretch Go out the second side arm of arm, the length of the first side wall is more than the length of the second sidewall, and first inductance coil includes A pair of of the first coil circle being respectively fitted over after making on two first cantilever arms, second inductance coil includes coiling The second coil turn of a pair being respectively fitted over after good on two second cantilever arms；Corresponding first cantilever arm and described the The end face of two cantilever arms is mutually butted to constitute closed loop configuration.

In the novel PFC inductor of the utility model, the angle of the transition position of first cantilever arm and the first side wall For degree less than 90 °, the angle of the transition position of second cantilever arm and the second sidewall is more than 90 °.

Further include metal box in the novel PFC inductor of the utility model, at least two institutes are provided in the metal box State closed loop configuration.

In the novel PFC inductor of the utility model, mounting groove, the shape of the mounting groove are provided in the metal box With dock after the first iron core and the shape of the second iron core match.

In the novel PFC inductor of the utility model, first inductance coil and the second inductance coil may be used Double wrap circle.

The advantageous effect of the application is：Existing iron core is divided into the first iron core and the second iron core by the novel PFC inductor, It when coiling, is assembled into respectively on the first iron core and the second iron core again after can first winding coil, when assembling, because of the first iron core and The length of the side wall of two iron cores is different, and can be quickly tell needs two parts assembling, greatly increases production The packaging efficiency of line.

In addition, relative to the general horizontal angle docked, pair of the first cantilever arm and the second cantilever arm in the application Gap between first coil circle and the second coil turn can be increased by connecing angle so that point of first coil circle and the second coil turn Cloth capacitance becomes smaller, so as to improve the application novel PFC inductor coil Q values.

Description of the drawings

Fig. 1 is the structural schematic diagram of the novel PFC inductor in one embodiment of the application.

Specific implementation mode

The application is described in further detail below by specific implementation mode combination attached drawing.

As shown in Figure 1, this application discloses a kind of novel PFC inductors comprising the first iron core 1, the second iron core 2, One inductance coil 3 and the second inductance coil 4, first iron core 1 include two the first cantilever arms 11, and described in connection two First side arm 12 of the first cantilever arm, second iron core 2 include two the second cantilever arms 21, and connection two described second The length of second side arm 21 of cantilever arm, the first side wall and the second sidewall is different, illustrates in the figure of the present embodiment The length of the first side wall is more than the length of the second sidewall, and first inductance coil includes being respectively fitted over after making A pair of of first coil circle on two first cantilever arms, second inductance coil include that two are respectively fitted over after making The second coil turn of a pair on second cantilever arm；The end face phase of corresponding first cantilever arm and second cantilever arm Mutually docking is to constitute closed loop configuration.

To sum up, existing iron core is divided into the first iron core and the second iron core by the novel PFC inductor of the application, when coiling, It is assembled into respectively on the first iron core and the second iron core again after coil can first be wound, when assembling, because of the first iron core and the second iron core Side wall length it is different, can be quickly tell needs two parts assembling, greatly increases the group of production line Fill efficiency.

Further, referring again to Fig. 1, the angle [alpha] of the transition position of first cantilever arm and the first side wall is less than 90 °, the angle beta of the transition position of second cantilever arm and the second sidewall is more than 90 °, the advantages of this arrangement are as follows, phase For the angle of general horizontal docking, the docking angle of the first cantilever arm and the second cantilever arm in the application can increase the Gap between one coil turn and the second coil turn so that first coil circle and the distribution capacity of the second coil turn become smaller, to The coil Q values of the novel PFC inductor of the application can be improved.

In some embodiments, the novel PFC inductor of the application further includes metal box (not shown), in the metal box It is provided with the first iron core and the second iron core after at least two above-mentioned docking；The effect of metal box be can with armoured magnetic field, Reduce electromagnetism interference of the PFC inductance to other components.Meanwhile metal box body is also easier to be installed to energy-saving electric power relatively In.

Further, be provided with mounting groove in the metal box, the shape of the mounting groove with dock after the first iron core Match with the shape of the second iron core, the effect of mounting groove is to avoid jolt caused first iron core and the second iron in transport The loosening of core so that the stability higher of the novel PFC inductor of the application, physical life are longer.

Further, the installation position of the first iron core after two adjacent in metal box docking and the second iron core can Multiple choices are carried out, for example, the first side arm of first group of the first iron core is adjacent with second group of the first side wall of the first iron core, First side arm of first group of the first iron core is adjacent with second group of the second sidewall of the second iron core or first group of the second iron Second side arm of core is adjacent with second group of the second sidewall of the second iron core, specific mounting means can according to actual needs into Row adjustment so that the versatility of the novel PFC inductor of the application is more preferable, can be applicable in a variety of practical scenes.

It should be noted that double wrap circle or more pitch of the laps may be used in the first inductance coil and the second inductance coil, because To be first to use machine progress coiling, the number of turns of the pitch of the laps of the first inductance coil and the second inductance coil is more, heat dissipation effect More preferably.

The foregoing is a further detailed description of the present application in conjunction with specific implementation manners, and it cannot be said that this Shen Specific implementation please is confined to these explanations.For those of ordinary skill in the art to which this application belongs, it is not taking off Under the premise of conceiving from the application utility model, a number of simple deductions or replacements can also be made.

Claims

1. a kind of novel PFC inductor, which is characterized in that including the first iron core, the second iron core, the first inductance coil and the second electricity Feel coil, first iron core includes two the first cantilever arms, and the first side arm of two first cantilever arms of connection, institute It includes two the second cantilever arms, and the second side arm of two second cantilever arms of connection, first side to state the second iron core The length of wall is more than the length of the second sidewall, and first inductance coil includes that two described the are respectively fitted over after making A pair of of first coil circle on one cantilever arm, second inductance coil include being respectively fitted over two described second after making to stretch Go out the second coil turn of a pair on arm；The end face of corresponding first cantilever arm and second cantilever arm be mutually butted to Constitute closed loop configuration.

2. novel PFC inductor according to claim 1, which is characterized in that first cantilever arm and first side For the angle of the transition position of wall less than 90 °, the angle of the transition position of second cantilever arm and the second sidewall is more than 90 °.

3. novel PFC inductor according to claim 1, which is characterized in that further include metal box, set in the metal box It is equipped at least two closed loop configurations.

4. novel PFC inductor according to claim 3, which is characterized in that be provided with mounting groove, institute in the metal box The shape of the first iron core and the second iron core after stating the shape of mounting groove and docking matches.

5. novel PFC inductor according to claim 2, which is characterized in that further include metal box, set in the metal box It is equipped at least two closed loop configurations.

6. novel PFC inductor according to claim 5, which is characterized in that be provided with mounting groove, institute in the metal box The shape of the first iron core and the second iron core after stating the shape of mounting groove and docking matches.

7. novel PFC inductor according to any one of claims 1 to 6, which is characterized in that first inductance coil and Double wrap circle may be used in second inductance coil.