CN208848700U - Novel PFC inductance - Google Patents
Novel PFC inductance Download PDFInfo
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- CN208848700U CN208848700U CN201821807369.3U CN201821807369U CN208848700U CN 208848700 U CN208848700 U CN 208848700U CN 201821807369 U CN201821807369 U CN 201821807369U CN 208848700 U CN208848700 U CN 208848700U
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Abstract
The utility model discloses a kind of novel PFC inductance comprising combined magnet core, insulating fixing piece and flat copper wire；Combined magnet core includes two compatible sub- magnetic cores, and two sub- magnetic cores correspond to affixed；Insulating fixing piece includes the first insulating paper, steel band and the second insulating paper, and the first insulating paper, steel band and the second insulating paper are successively sheathed on outside combined magnet core from inside and outside；Flat copper wire is vertical to be around in two sub- magnetic cores and insulating fixing piece.The utility model of the application is vertical around rear by one layer of flat copper wire, it refills assigned on two sub- magnetic cores, operation is convenient, two sub- magnetic cores correspond to affixed for combined magnet core again, flat copper wire forms complete coil, manufactured PFC inductance distribution capacity reduces, and effect is improved, while also increasing the heat dissipation effect of PFC inductance.
Description
Technical field
The utility model relates to inductive technologies fields, and in particular, to a kind of novel PFC inductance.
Background technique
Pfc circuit is as the essential a part of Power electronics, PFC inductance also being paid attention to more；Tradition
PFC inductance be in magnetic core directly after upper copper wire, then it is vertical be mounted on fixed aluminium sheet, coil and aluminium sheet are solid by steel band
It is fixed, what such inductance was integrated because of magnetic core, magnetic core can not be by the direct coiling of coil winding machine in coiling, and it is inconvenient to make, and
Manufactured PFC inductance relative volume is larger, and distribution capacity is big, and EMC effect is poor, and heat dissipation effect is poor.
Utility model content
In view of the deficiencies of the prior art, the utility model provides a kind of novel PFC inductance.
A kind of novel PFC inductance disclosed by the utility model includes:
Combined magnet core comprising two compatible sub- magnetic cores；Two sub- magnetic cores correspond to affixed；
The insulating fixing piece being sheathed on outside combined magnet core；Insulating fixing piece includes the first insulating paper, steel band and the second insulation
Paper；First insulating paper, steel band and the second insulating paper are successively sheathed on outside combined magnet core from inside and outside；And
Flat copper wire, it is vertical to be around in two sub- magnetic cores and insulating fixing piece.
According to one embodiment of the utility model, each sub- magnetic core includes the sendust core layer and iron silicon successively overlapped
Core layer.
According to one embodiment of the utility model, the thickness of sendust core layer is 1 to 2 times of iron silicon core layer thickness.
It further include the aluminium box covered at outside flat copper wire according to one embodiment of the utility model；There is encapsulating in aluminium box
Heat conductive silica gel.
It further include third insulating paper according to one embodiment of the utility model；Third insulating paper is layed in the bottom of aluminium box
Wall and side wall.
It further include crimp type terminal and high temperature heat-resistant Heat-Shrinkable Tubings according to one embodiment of the utility model；Flat copper wire
Including drawing electric wire；Electric wire is drawn to connect with crimp type terminal；High temperature heat-resistant Heat-Shrinkable Tubings, which are sheathed on, draws outside electric wire.
The utility model of the application is vertical around rear by one layer of flat copper wire, refills assigned on two sub- magnetic cores, and operation is convenient,
Two sub- magnetic cores correspond to affixed for combined magnet core, flat copper wire formation complete coil, manufactured PFC inductance distribution capacity reduction again
, effect is improved, while also increasing the heat dissipation effect of PFC inductance.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present application, constitutes part of this application, this Shen
Illustrative embodiments and their description please are not constituted an undue limitation on the present application for explaining the application.In the accompanying drawings:
Fig. 1 is the structural schematic diagram of novel PFC inductance in embodiment 1；
Fig. 2 is the top view of combined magnet core and insulating fixing piece in embodiment 1；
Fig. 3 is the cross-sectional view of combined magnet core in embodiment 1；
Fig. 4 is the flow chart of novel PFC inductance preparation method in embodiment 2.
Specific embodiment
Multiple embodiments that the utility model will be disclosed with schema below, as clearly stated, in many practices
Details will be explained in the following description.It should be appreciated, however, that the details in these practices does not apply this with limitation practical new
Type.That is, the details in these practices is non-essential in some embodiments of the utility model.In addition, for letter
For the sake of changing schema, some known usual structures and component will be painted it in the drawings in simply illustrative mode.
It is to be appreciated that institute is directional in the utility model embodiment indicates that such as up, down, left, right, before and after ... is only
For explaining relative positional relationship, motion conditions etc. in the case where a certain particular pose is as shown in the picture between each component, if should
When particular pose changes, then directionality instruction also correspondingly changes correspondingly.
In addition, the description for being such as related to " first ", " second " in the present invention is used for description purposes only, and non-specifically
The meaning of order or cis-position is censured, it is also non-to limit the utility model, it is retouched just for the sake of difference with same technique term
The component stated or operation are not understood to indicate or imply its relative importance or implicitly indicate indicated technology
The quantity of feature." first " is defined as a result, the feature of " second " can explicitly or implicitly include at least one spy
Sign.It in addition, the technical solution between each embodiment can be combined with each other, but must be with those of ordinary skill in the art's energy
It is enough realize based on, will be understood that the knot of this technical solution when conflicting or cannot achieve when occurs in the combination of technical solution
Conjunction is not present, also not within the protection scope of the requires of the utility model.
For the utility model content, feature and effect that can further appreciate that the utility model, the following examples are hereby given, and
It is described in detail with the accompanying drawings as follows:
Embodiment 1
Referring to figs. 1 to Fig. 3, Fig. 1 is the structural schematic diagram of novel PFC inductance in embodiment 1, and Fig. 2 is to combine in embodiment 1
The top view of magnetic core and insulating fixing piece, Fig. 3 are the cross-sectional view of combined magnet core in embodiment 1.Novel PFC inductance in the present embodiment
Including combined magnet core 1, insulating fixing piece 2, flat copper wire 3, aluminium box 4, heat conductive silica gel 5, third insulating paper 6, crimp type terminal 7 and
High temperature heat-resistant Heat-Shrinkable Tubings 8.
Combined magnet core 1 includes two sub- magnetic cores 11, and two sub- magnetic cores 11 are adapted, and two sub- correspondences of magnetic core 11 are affixed.Often
One sub- magnetic core 11 includes the sial core layer and iron silicon core layer successively overlapped, in the present embodiment, sendust core layer
Thickness is 1 to 2 times of iron silicon core layer thickness, specifically, two layers of sial core layer and one layer of iron silicon magnetic can be used in sub- magnetic core 11
Sandwich layer overlapping gluing is made, for example, from top to bottom successively according to sendust core layer, iron silicon core layer and sendust core layer
Level overlapping, in another example, from top to bottom successively according to the layer of iron silicon core layer, sendust core layer and sendust core layer
Epoxide-resin glue can be used in grade overlapping, when gluing.Specifically, sendust core layer and iron silicon core layer are respectively sendust core
With iron silicon magnetic core.
Iron silicon magnetic core has the characteristics that saturation flux density is high, soft saturation degree is good, core loss is low, temperature stability is good,
And sendust core has core loss low, the highly stable feature of no heat ageing and at high temperature performance, using iron silicon magnetic core
The sub- magnetic core 11 formed with sendust core, can effectively reduce the loss of combined magnet core 1, and can protect at relatively high temperatures
Highly stable performance is held, the thickness using sial core layer is 1.44 times of ratio setting of iron silicon core layer thickness, reachable
To preferable effect.
Specifically, two sendust cores of annulus can be used and iron silicon magnetic core is suitable with above-mentioned overlapping in magnetic core production
Sequence carries out gluing and combined magnet core 1 is made, and the toroidal core 1 prepared is two sub- magnetic cores 11, tool along the radial cuts of itself
When body is cut, cutting line can be by the ring heart of combined magnet core 1, so that combined magnet core 1 is divided into two sizes and shape is complete
Consistent sub- magnetic core 11 or cutting line do not pass through the ring heart of combined magnet core 1, so that the formation of combined magnet core 1 two is not of uniform size
Two sub- magnetic cores 11.
Flat copper wire 3 is uniformly vertical to be around in outside two sub- magnetic cores 11, specifically, flat copper wire 3 can be automated by coil winding machine
One layer it is vertical around and form coil, the vertical coil wound can on being assemblied in sub- magnetic core 11, in the present embodiment, flat copper wire 3 it is vertical around
Two coils are formed, are connected between two coils by flat copper wire 3, and latter two coil respectively corresponds and is assemblied in two sub- magnetic
On core 11, stand so that being formed between flat copper wire 3 and two sub- magnetic cores 11 around relationship, at this point, having between coil and sub- magnetic core 11
There is gap.Relative to traditional winding mode, realize flat copper wire 3 in non-close annular magnetic by automated machine in the present embodiment
The quick coiling of core, operation is convenient, and high-efficient and one layer of coiling is uniform, while ensure that the consistency of coiling.It is assembled in coil
After sub- magnetic core 11, two sub- magnetic cores 11 corresponded to by epoxide-resin glue it is affixed so that two sub- magnetic cores 11 reconfigure as ring
The combined magnet core 1 of shape, partially flat copper wire 3 form complete coil.Flat copper wire 3 is uniformly vertical to be around in outside combined magnet core 1, and is used
The mode of one layer of coiling increases the unit heat dissipation area of 3 coil of flat copper wire, so that the good heat dissipation effect of coil, temperature liter
It is low at high speed, and it is vertical around flat copper wire 3 and the combination of low-loss combined magnet core 1 improve coil efficiency so that electric
Holding is in low distribution, and EMC test effect is significantly better than traditional PFC inductance.Flat copper wire 3 includes drawing electric wire 31, tool
Body, it draws electric wire 31 and is located at the end of a thread of flat copper wire 3；It draws electric wire 31 and is used for remaining external electronics member device of coil
Part.
Insulating fixing piece 2 is sheathed on outside combined magnet core 1.Insulating fixing piece 2 includes the first insulating paper 21, steel band 22 and second
Insulating paper 23；First insulating paper 21, steel band 22 and the second insulating paper 23 are successively sheathed on outside combined magnet core 1 from inside and outside.Steel band
The 22 pairs two combined combined magnet cores 1 of sub- magnetic core 11 are further fixed, and the first insulating paper 21 and the second insulating paper 23 are
With high tenacity, excellent dielectric properties, high thermal conductivity coefficient, the first insulating paper 21 and the second insulating paper 23 are respectively used to steel band 22
Being isolated between coil is formed with combined magnet core 1, steel band 22 with flat copper wire 3, the first insulating paper 21 and the second insulating paper 23 rise
It to while the effect being dielectrically separated from, and will not have a negative impact to coil, the first insulating paper 21 and the second insulating paper 23 can
It is fixed by high temperature gummed tape.
Specifically, the first insulating paper 21, steel band 22 and the second insulating paper 23 are initially strip, and 21 He of the first insulating paper
The width of second insulating paper 23 is greater than the width of steel band 22；Flat copper wire 3 forms the thickness in the gap between coil and sub- magnetic core 11
Degree is greater than the sum of 23 three's thickness of the first insulating paper 21, steel band 22 and the second insulating paper；Two coils are assemblied in two sub- magnetic cores
After 11, the both ends of the first insulating paper 21 are then first each passed through two by epoxy natural gum gluing by two sub- magnetic cores 11
The gap formed between coil and two sub- magnetic cores 11, after passing through, the both ends of the first insulating paper 21 pass through again high temperature gummed tape into
Row is fixed, so that the first insulating paper 21 is closely sheathed on outside combined magnet core 1；The both ends of steel band 22 use and the first insulating paper 21
After the gap that identical mode is formed across two coils and two sub- magnetic cores 11, the both ends welding of steel band 22 is another
It rises, so that steel band 22 is closely sheathed on except the first insulating paper 21；The both ends of second insulating paper 23 use and the first insulating paper 21
It is fixedly connected, is made by high temperature gummed tape after the gap that identical mode is formed across two coils and two sub- magnetic cores 11
It obtains the second insulating paper 23 to be closely sheathed on outside steel band 22, at this time the state of the first insulating paper 21, steel band 22 and the second insulating paper 23
For ring-shaped compatible with combined magnet core 1.It may make steel band 22 that combined magnet core 1 is fixed through the above way, and
First insulating paper 21 and the second insulating paper 23 are dielectrically separated from respectively.
After 2 fixed Combination magnetic core 1 of insulating fixing piece, coil is immersed in high-temperature insulation paint, so that the surface of coil covers
One layer of insulating protective layer (not shown).
The coil for covering insulating protective layer is set in aluminium box 4, is formed and is protected to coil by aluminium box 4, specifically, first by two
It opens third insulating paper 6 and is first layed in the bottom wall and side wall of aluminium box 4 respectively, and be fixed by high temperature gummed tape, it is exhausted by third
Edge paper 6, which is formed, is further dielectrically separated from relationship, and the coil for covering insulating protective layer is set to again in aluminium box 4,5 encapsulating of heat conductive silica gel
In in aluminium box 4, so that be flooded with casting glue in entire aluminium box 4, only encapsulating PFC inductance is located in aluminium box 4 when casting glue encapsulating
Part, therefore half encapsulating can be referred to as.By the encapsulating of heat conductive silica gel 5, can make combined magnet core 1, insulating fixing piece 2,
Flat copper wire 3, aluminium box 4 and third insulating paper 6 form stable fixed relationship, meanwhile, the heating conduction of PFC inductance is promoted,
And after being dielectrically separated from by third insulating paper 6 to aluminium box 4, then encapsulating heat conductive silica gel 5, PFC inductance can be effectively improved
Insulation effect.
Crimp type terminal 7 is connect with electronics 31 is drawn, convenient for the connection of PFC inductance and remaining electronic component.High temperature heat-resistant
Heat-Shrinkable Tubings 8, which are sheathed on, draws outside electric wire 31, is formed and is protected to lead-out wire electric wire 31.
Embodiment 2
It is the flow chart of novel PFC inductance preparation method in embodiment 2, novel PFC electricity in the present embodiment referring to Fig. 4, Fig. 4
The preparation method of sense the following steps are included:
Combined magnet core 1 is made, combined magnet core 1 includes two compatible sub- magnetic cores 11.The step of combined magnet core 1 is made is wrapped
It includes following sub-step: two sendust core layers and an iron silicon core layer being superimposed with each other first, then gluing is combination magnetic
Core 1, combined magnet core 1 is two sub- magnetic cores 11 along itself radial cuts, in the present embodiment, in cutting, along combined magnet core 1
Heartcut can so keep the consistency of sub- magnetic core 11 so that combined magnet core 1 is cut into two sub- magnetic cores 11 of equal part.
Specifically, the cutting of combined magnet core 1 can be realized by cutting machine.
Flat copper wire 3 is coiled into two coils by the way that coil winding machine is vertical, and two coils are adapted with two sub- magnetic cores 11 respectively；Around
Partially flat copper wire 3 is kept when line machine coiling constantly, so that two coil integration connections.
Two coils, which respectively correspond, to be assemblied on two sub- magnetic cores 11；Specifically, two coils respectively correspond and are sheathed on two
On a sub- magnetic core 11, and two coils is made to be located at the intermediate positions of two sub- magnetic cores 11, so that entire combined magnet core 1
On two coils be symmetrical structure.
Two sub- correspondences of magnetic core 11 are affixed.Specifically, combined magnet core 1 is distinguished on the cut surface that cutting forms sub- magnetic core 11
Epoxide-resin glue is spread in painting, and two sub- magnetic cores 11 are opposite to be merged, so that two sub- magnetic cores 11 are fixed on by epoxy natural gum gluing
Together.
Steel band 22 is sheathed on outside coil, and is isolated between steel band 22 and combined magnet core 1 by the first insulating paper 21, steel band 22
It is isolated between coil by the second insulating paper 23.
Coil immerses high-temperature insulation paint, is allowed to form insulating protective layer.
The bottom wall and side wall of aluminium box 4 are laid with third insulating paper 6, the size and shape and aluminium of third insulating paper 6 respectively
Box 4 is adapted, and is laid with in aluminium box 4, can be fixed by colloid or high temperature gummed tape and aluminium box 4.
The coil for immersing high temperature insulated paint is set in aluminium box 4.
5 encapsulating of heat conductive silica gel is in aluminium box.
The extraction electric wire 31 of flat copper wire 3 connects pressure line terminal 7.
High temperature heat-resistant Heat-Shrinkable Tubings 8, which are sheathed on, draws outside electric wire 31.
To sum up, the utility model of the application is vertical around rear by one layer of flat copper wire, refills the operation assigned on two sub- magnetic cores
Convenient, two sub- magnetic cores correspond to affixed for combined magnet core, flat copper wire formation complete coil, manufactured PFC inductance distribution electricity again
Appearance reduces, and effect is improved, while also increasing the heat dissipation effect of PFC inductance.In addition, by the first insulating paper,
The setting of second insulating paper and third insulating paper increases the insulating properties of PFC inductance, and heat conductive silica gel increases leading for PFC inductance
Thermal effect.
Upper is only the embodiments of the present invention, is not intended to limit the utility model.For art technology
For personnel, various modifications and changes may be made to the present invention.It is all made in the spirit and principle of the utility model
Any modification, equivalent substitution, improvement and etc. should all include within the scope of the claims of the utility model.
Claims (6)
1. a kind of novel PFC inductance characterized by comprising
Combined magnet core comprising two compatible sub- magnetic cores；Two sub- magnetic cores correspond to affixed；
The insulating fixing piece being sheathed on outside the combined magnet core；The insulating fixing piece includes the first insulating paper, steel band and second
Insulating paper；First insulating paper, steel band and the second insulating paper are successively sheathed on outside the combined magnet core from inside and outside；And
Flat copper wire, it is vertical to be around in two sub- magnetic cores and insulating fixing piece.
2. novel PFC inductance according to claim 1, which is characterized in that each sub- magnetic core includes successively overlapping
Sendust core layer and iron silicon core layer.
3. novel PFC inductance according to claim 2, which is characterized in that the thickness of the sendust core layer is described
1 to 2 times of iron silicon core layer thickness.
4. novel PFC inductance according to claim 1, which is characterized in that it further includes covering at outside the flat copper wire
Aluminium box；Encapsulating has heat conductive silica gel in the aluminium box.
5. novel PFC inductance according to claim 4, which is characterized in that it further includes third insulating paper；The third is exhausted
Edge paper is layed in the bottom wall and side wall of the aluminium box.
6. novel PFC inductance according to claim 1, which is characterized in that it further includes crimp type terminal and high temperature heat-resistant
Heat-Shrinkable Tubings；The flat copper wire includes drawing electric wire；The extraction electric wire is connect with the crimp type terminal；The high temperature resistant
Heat-shrinkable T bush is sheathed on outside the extraction electric wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821807369.3U CN208848700U (en) | 2018-11-05 | 2018-11-05 | Novel PFC inductance |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821807369.3U CN208848700U (en) | 2018-11-05 | 2018-11-05 | Novel PFC inductance |
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| Publication Number | Publication Date |
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| CN208848700U true CN208848700U (en) | 2019-05-10 |
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| CN201821807369.3U Active CN208848700U (en) | 2018-11-05 | 2018-11-05 | Novel PFC inductance |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109166697A (en) * | 2018-11-05 | 2019-01-08 | 惠州佳扬电子科技有限公司 | Novel PFC inductance and preparation method thereof |
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2018
- 2018-11-05 CN CN201821807369.3U patent/CN208848700U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109166697A (en) * | 2018-11-05 | 2019-01-08 | 惠州佳扬电子科技有限公司 | Novel PFC inductance and preparation method thereof |
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