CN107946046A - A kind of two-phase coupling inductor and power supply - Google Patents
A kind of two-phase coupling inductor and power supply Download PDFInfo
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- CN107946046A CN107946046A CN201711374822.6A CN201711374822A CN107946046A CN 107946046 A CN107946046 A CN 107946046A CN 201711374822 A CN201711374822 A CN 201711374822A CN 107946046 A CN107946046 A CN 107946046A
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- 238000004804 winding Methods 0.000 claims abstract description 72
- 239000004020 conductor Substances 0.000 claims abstract description 71
- 230000015572 biosynthetic process Effects 0.000 claims description 14
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 230000004907 flux Effects 0.000 claims description 4
- 238000007747 plating Methods 0.000 claims description 4
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- 238000004080 punching Methods 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000013461 design Methods 0.000 description 16
- 238000010586 diagram Methods 0.000 description 10
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- 230000005611 electricity Effects 0.000 description 4
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- 239000003292 glue Substances 0.000 description 2
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- 238000011161 development Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/24—Magnetic cores
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
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Abstract
The embodiment of the invention discloses a kind of two-phase coupling inductor and power supply, including the first magnetic core, the second magnetic core, the first winding and the second winding, the first magnetic core and the second magnetic core face are connected；The side being connected in first magnetic core with the second magnetic core is equipped with 5 magnetic poles, each magnetic pole respectively is the first side column, the first secondary center pillar, main center pillar, the second secondary center pillar and the second side column, a wire casing is formed between per two neighboring magnetic pole, each wire casing respectively is the first wire casing, the second wire casing, the 3rd wire casing and the 4th wire casing；First winding is equipped with the first conductor piece, the second conductor piece and the first non-electrode pin；Second winding is equipped with the 3rd conductor piece, the 4th conductor piece and the second non-electrode pin；First conductor piece, the second conductor piece, the 3rd conductor piece and the 4th conductor piece are respectively arranged in the first wire casing, the 3rd wire casing, the second wire casing and the 4th wire casing.The height that the embodiment of the present invention reduces two-phase coupling inductor makes its lightening, beneficial to the lightening of power supply and terminal device.
Description
Technical field
The present embodiments relate to inductive technologies field, more particularly to a kind of two-phase coupling inductor and power supply.
Background technology
In recent years, more and more applied in Power Management Design using the interleaving technique of two-phase or multi-phase coupling inductor
In.So-called crisscross parallel circuit, is exactly that power supply duplex input is connected in parallel, the working frequency of switching tube is identical, phase difference
Certain angle.As a result of Interleaving and Transformer Paralleling, the ripple of generation is frequently switched on by switching tube to be greatly reduced, and so set
When counting output filter capacitor, the design load of capacitance can be reduced.In the occasion of low-voltage, high-current using this technique effect more
Substantially, not only improve the quality of DC output voltage, can also reduce volume, save cost, many benefits are brought to subsequent design.
Using interleaving technique, two-way shares general power, can reduce per power all the way, per the height and volume of magnetic element all the way
Can greatly reduce, the volume of whole circuit with respect to single-phase circuit in the case of identical output power it is much smaller, thus improve
The power density of power supply, reduces power supply cost.
With the development of science and technology, user it is lightening to electronic product demand it is higher and higher, power supply is in electronic product
Essential device.At present, more and more applied in electricity using the interleaving technique of two-phase or multi-phase coupling inductor
In the design of source, and the two-phase coupling inductor or multi-phase coupling inductor used in crisscross parallel circuit, have to circuit performance
Critical influence.At present, existing two-phase coupling inductor mainly adjusts the coefficient of coup using secondary magnetic air gap,
Therefore need to add a secondary magnetic circuit outside coupling inductance, since secondary magnetic circuit height in itself and length are larger, and in order to
The performance of whole double coupling inductors is kept, it is necessary to the secondary magnetic circuit added is arranged at the top of coupling inductance, so as to increase
The whole height of whole two-phase coupling inductor, makes two-phase coupling inductor of the prior art be difficult to meet that terminal device is light
Thinning design requirement.
In consideration of it, how to provide a kind of the two-phase coupling inductor for solving above-mentioned technical problem and power supply becomes this area skill
The current urgent problem to be solved of art personnel.
The content of the invention
The purpose of the embodiment of the present invention is to provide a kind of two-phase coupling inductor and power supply, can reduce two-phase coupling inductance
The height of device, makes two-phase coupling inductor lightening, and then is conducive to the lightening design of power supply and terminal device.
In order to solve the above technical problems, an embodiment of the present invention provides a kind of two-phase coupling inductor, applied to power supply, bag
The first magnetic core, the second magnetic core, the first winding and the second winding are included, wherein：
First magnetic core is connected with the second magnetic core face, forms the flux circuit of coupling inductor；Described first
The side being connected in magnetic core with second magnetic core is equipped with 5 magnetic poles, and each magnetic pole respectively is the first side column, first
Secondary center pillar, main center pillar, the second secondary center pillar and the second side column, often form a wire casing, each line between two neighboring magnetic pole
Groove respectively is the first wire casing, the second wire casing, the 3rd wire casing and the 4th wire casing；It is described first winding equipped with the first conductor piece,
The end of second conductor piece and the first non-electrode pin, first conductor piece and second conductor piece is respectively equipped with the first electricity
Pole pin and second electrode pin；Second winding is equipped with the 3rd conductor piece, the 4th conductor piece and the second non-electrode pin, institute
The end for stating the 3rd conductor piece and the 4th conductor piece is respectively equipped with the 3rd electrode pin and the 4th electrode pin；Described first
Conductor piece, second conductor piece, the 3rd conductor piece and the 4th conductor piece are respectively arranged at the first wire casing, the 3rd line
In groove, the second wire casing and the 4th wire casing.
Optionally, the one side edge of the first magnetic core upper surface is equipped with first step；The bottom of second magnetic core
Both sides of the edge are respectively equipped with second step and the 3rd step.
Optionally, first winding is U-shaped, and the first electrode pin and the second electrode pin are hook-shaped knot
Structure, and be connected on the second step；The first non-electrode pin is hook formation, and is connected in the first step
On.
Optionally, second winding is U-shaped, and the 3rd electrode pin and the 4th electrode pin are hook-shaped knot
Structure, and be connected on the second step；The second non-electrode pin is hook formation, and is connected in the 3rd step
On.
Optionally, the width of first side column and second side column is equal；Described first secondary center pillar and described second
The width of secondary center pillar is equal.
Optionally, the width phase of first wire casing, second wire casing, the 3rd wire casing and the 4th wire casing
Deng.
Optionally, the thickness of first magnetic core is not more than the first predetermined threshold value, and the thickness of second magnetic core is not more than
Second predetermined threshold value.
Optionally, first predetermined threshold value is 2mm；Second predetermined threshold value is 1mm.
Optionally, first winding and the described second winding are the winding for forming tin plating copper sheet punching press bending.
The embodiment of the present invention additionally provides a kind of power supply, including two-phase coupling inductor as described above.
An embodiment of the present invention provides a kind of two-phase coupling inductor and power supply, including the first magnetic core, the second magnetic core, first
Winding and the second winding, wherein, the first magnetic core and the second magnetic core face are connected, and form the flux circuit of coupling inductor；First
The side being connected in magnetic core with the second magnetic core is equipped with 5 magnetic poles, each magnetic pole respectively be the first side column, the first secondary center pillar,
Main center pillar, the second secondary center pillar and the second side column, often form a wire casing, each wire casing respectively is between two neighboring magnetic pole
First wire casing, the second wire casing, the 3rd wire casing and the 4th wire casing；First winding is equipped with the first conductor piece, the second conductor piece and first
The end of non-electrode pin, the first conductor piece and the second conductor piece is respectively equipped with first electrode pin and second electrode pin；The
Two windings are equipped with the end of the 3rd conductor piece, the 4th conductor piece and the second non-electrode pin, the 3rd conductor piece and the 4th conductor piece
It is respectively equipped with the 3rd electrode pin and the 4th electrode pin；First conductor piece, the second conductor piece, the 3rd conductor piece and the 4th conductor
Piece is respectively arranged in the first wire casing, the 3rd wire casing, the second wire casing and the 4th wire casing.
As it can be seen that the 3rd of the first conductor piece and the second conductor piece of the first winding in the embodiment of the present invention and the second winding the
Conductor piece and the 4th conductor piece is interlaced is arranged in each wire casing of the first magnetic core, so that the first winding is by main center pillar
In being looped around with the second secondary center pillar, make in the first secondary center pillar and main center pillar be looped around by the second winding, and main center pillar is by first
Winding and the second winding are common circular, and the size of the coefficient of coup of whole two-phase coupling inductor is secondary by the first secondary center pillar and second
The area of center pillar determines, it is possible to there is the first secondary center pillar and the second secondary center pillar of different in width according to design is actually needed,
And then make two-phase coupling inductor that there is the corresponding coefficient of coup, also can be by the first secondary center pillar and the second secondary center pillar
Width is adjusted to be adjusted to the coefficient of coup.The embodiment of the present invention is without additionally setting secondary magnetic circuit, so as to reduce
The height of two-phase coupling inductor, makes two-phase coupling inductor lightening, and then is conducive to the lightening of power supply and terminal device
Design.
Brief description of the drawings
To describe the technical solutions in the embodiments of the present invention more clearly, below will be to institute in the prior art and embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, drawings in the following description are only some implementations of the present invention
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is a kind of upper 45 ° of structure diagrams of two-phase coupling inductor provided in an embodiment of the present invention；
Fig. 2 is a kind of lower 45 ° of structure diagrams of two-phase coupling inductor provided in an embodiment of the present invention；
Fig. 3 is the structure diagram of the first magnetic core in a kind of two-phase coupling inductor provided in an embodiment of the present invention；
Fig. 4 is the structure diagram of the first magnetic core in a kind of two-phase coupling inductor provided in an embodiment of the present invention；
Fig. 5 is the structure diagram of the second magnetic core in a kind of two-phase coupling inductor provided in an embodiment of the present invention；
Fig. 6 is the structure diagram of the first winding in a kind of two-phase coupling inductor provided in an embodiment of the present invention；
Fig. 7 is the structure diagram of the second winding in a kind of two-phase coupling inductor provided in an embodiment of the present invention；
Fig. 8 is a kind of equivalent circuit schematic of two-phase coupling inductor provided in an embodiment of the present invention；
Fig. 9 is that a kind of coupling inductance of two-phase coupling inductor provided in an embodiment of the present invention tests equivalent circuit theory
Figure；
Figure 10 is the first winding and the second winding magnetic line of force of a kind of two-phase coupling inductor provided in an embodiment of the present invention
Illustrate schematic diagram in direction；
Figure 11 is a kind of front-view schematic diagram of two-phase coupling inductor provided in an embodiment of the present invention；
Figure 12 is a kind of schematic top plan view of two-phase coupling inductor provided in an embodiment of the present invention；
Figure 13 is a kind of schematic side view of two-phase coupling inductor provided in an embodiment of the present invention；
Figure 14 is a kind of schematic rear view of two-phase coupling inductor provided in an embodiment of the present invention.
Embodiment
An embodiment of the present invention provides a kind of two-phase coupling inductor and power supply, the height of two-phase coupling inductor can be reduced
Degree, makes two-phase coupling inductor lightening, and then be conducive to the lightening design of power supply and terminal device.
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, the technical solution in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
Part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
All other embodiments obtained without making creative work, belong to the scope of protection of the invention.
Fig. 1-Figure 13 is refer to, the two-phase coupling inductor, applied to power supply, including the first magnetic core 1, the second magnetic core 2,
One winding 3 and the second winding 4, wherein：
First magnetic core 1 is connected with 2 face of the second magnetic core, forms the flux circuit of coupling inductor；With in first magnetic core 1
The side of two magnetic cores 2 connection is equipped with 5 magnetic poles, and each magnetic pole respectively is first the 11, first secondary center pillar 12 of side column, main center pillar
13rd, the second 14 and second side column 15 of secondary center pillar, often forms a wire casing, each wire casing respectively is between two neighboring magnetic pole
First wire casing 101, the second wire casing 102, the 3rd wire casing 103 and the 4th wire casing 104；First winding 3 is equipped with the first conductor piece 31, the
The end of two conductor pieces 32 and the first non-electrode pin 33, the first conductor piece 31 and the second conductor piece 32 is respectively equipped with first electrode
Pin 310 and second electrode pin 320；Second winding 4 is equipped with the 3rd conductor piece 41, the 4th conductor piece 42 and second non-electrode draws
The end of foot 43, the 3rd conductor piece 41 and the 4th conductor piece 42 is respectively equipped with the 3rd electrode pin 410 and the 4th electrode pin
420；First conductor piece 31, the second conductor piece 32, the 3rd conductor piece 41 and the 4th conductor piece 42 are respectively arranged at the first wire casing
101st, in the 3rd wire casing 103, the second wire casing 102 and the 4th wire casing 104.
It should be noted that as shown in Figures 1 to 7, the first winding 3 and the second winding 4 in the embodiment of the present invention interlock
It is arranged in each wire casing of the first magnetic core 1, also the first conductor piece 31 is arranged in the first wire casing 101, by the second conductor
Piece 32 is arranged in the 3rd wire casing 103, and the 3rd conductor piece 41 is arranged in the second wire casing 102, and the 4th conductor piece 42 is set
In in the 4th wire casing 104, in the secondary center pillar 14 of main center pillar 13 and second is looped around by the first winding 3, the second winding 4 is by the first pair
In column 12 and main center pillar 13 are looped around, main center pillar 13 is surround jointly by the first winding 3 and the second winding 4.First electrode pin
310th, second electrode pin 320, the 3rd electrode pin 410 and the 4th electrode pin 420 are connected in circuit in the application；First
Non-electrode 33 and second non-electrode pin 43 of pin will be used as non-electrode fixed pin and welding circuit board.Specifically, it can lead to
Cross viscose glue each conductor piece is arranged in corresponding wire casing, and viscose glue can also be passed through between the first magnetic core and the second magnetic core
Connection, certainly, its specific connection mode is unlimited.
Specifically, the operation principle of the two-phase coupling inductor provided in the embodiment of the present invention is as follows：
The equivalent circuit schematic of two-phase coupling inductor is as shown in figure 8, setting first electrode pin 310 and the 4th electrode
Pin 420 is Same Name of Ends, and when individually testing the first winding 3 (at this time, the second winding 4 disconnects), the first winding 3 passes through
It is L1 that one electrode pin 310 and second electrode pin 320, which measure obtained inductance value,.When individually testing the second winding 4
(the first winding 3 disconnects at this time), the electricity that the second winding 4 is obtained by the 3rd electrode pin 410 and the measurement of the 4th electrode pin 420
Sensibility reciprocal is L2.
The coupling inductance test equivalent circuit schematic of the two-phase coupling inductor is as shown in figure 9, first electrode in parallel is drawn
310 and the 4th electrode pin 420 of foot, the common port after parallel connection is as test point 51；The electricity of second electrode pin 320 and the 3rd in parallel
Pole pin 410, its common port is as test point 52.It is to couple to measure obtained inductance value by test point 51 and test point 52
Inductance value Lm.
According to coupling inductance Computing Principle formula, it is known that Lm=L1+L2-2M (wherein M is the coefficient of coup).As shown in Figure 10
Magnetic line of force schematic diagram understand, in the first side column 11,13 and second side column 15 of main center pillar, the first winding 3 and the second winding 4 produce
Raw magnetic line of force direction is on the contrary, cancel out each other；In the first secondary secondary center pillar 14 of center pillar 12 and second, the first winding 3 and second around
The magnetic line of force direction that group 4 produces is identical, mutually strengthens.
Therefore, the size of the coefficient of coup M of the two-phase coupling inductor in the application is secondary by the first secondary center pillar 12 and second
The sectional area size of center pillar 14 determines.So in the case where other sizes and mounting condition are constant, separately through adjusting first
The width of the secondary secondary center pillar 14 of center pillar 12 and second, can obtain different coefficient of coup M, and then obtain different coupling inductance amounts
Lm, to meet the needs of different crisscross parallel circuit designs.That is, it can determine first according to the actual requirements in practical applications
The sectional area size of the secondary secondary center pillar 14 of center pillar 12 and second, so that it is determined that the corresponding coefficient of coup, when secondary center pillar 12 and second is secondary
After the sectional area size of center pillar 14 determines, the coefficient of coup of corresponding two-phase coupling inductor also determines that.So the application
In two-phase coupling inductor without additionally setting secondary magnetic circuit to adjust the coefficient of coup, realize the flattening of two-phase coupling inductor
Design, reduces the height of two-phase coupling inductor, is conducive to the lightening of power supply and corresponding product.
In addition, for the larger design of element layout density, due to the top of two-phase coupling inductor of the prior art
Heat dissipation area is smaller, so heat dissipation effect is poor, and the flattening of the two-phase coupling inductor in embodiment of the present invention design increases
Added top heat dissipation area, thus the two-phase coupling inductor in the application compared with the prior art in two-phase coupling inductor
With more preferable heat dissipation effect.
Further, as shown in Figure 8 and Figure 9, the one side edge of the upper surface of the first magnetic core 1 in the embodiment of the present invention is set
There is first step；The both sides of the edge of the bottom of second magnetic core 2 are respectively equipped with second step and the 3rd step.
It should be noted that the one side edge of 1 upper surface of the first magnetic core in the embodiment of the present invention is equipped with first step, its
Lower surface is equipped with 5 magnetic poles, and each conductor piece of each winding is arranged in each wire casing, and corresponding pin is respectively positioned on line
Outside groove, the respective pins of each winding can be facilitated to be clamped to the first step, the both sides of the bottom of same second magnetic core 2
Edge is respectively equipped with second step and the 3rd step, also allow for each winding respective pins clamping with corresponding step.When
When the upper surface of first magnetic core 1 is set to plane, the pin will protrude when some pin needs to be connected to the upper surface of the first magnetic core 1
In the upper surface of the first magnetic core 1 so that the height increase of whole two-phase coupling inductor, with should the second magnetic core 2 following table
When face is arranged to plane, the problem of same also occurs, so upper surface a side of the first magnetic core 1 in the embodiment of the present invention
Edge is equipped with first step；The both sides of the edge of the bottom of second magnetic core 2 are respectively equipped with second step and the 3rd step.
It is of course also possible to which two lateral edges of the upper surface of the first magnetic core are set a step respectively, specifically how to set
It should be determined according to actual conditions.In addition, specific width and height for first step, second step and the 3rd step are
It can be determined according to the length of each pin and thickness in actual conditions, the embodiment of the present invention is not particularly limited this.
Further, as shown in fig. 6, the first winding 3 is U-shaped, first electrode pin 310 and second electrode pin are equal
320 be hook formation, and is connected on second step；First non-electrode pin 33 is hook formation, and is connected in First
On rank.
Specifically, the first winding 3 in the embodiment of the present invention is specially U-shaped structure, and first electrode pin 310 and the
Two electrode pins 320 are hook formation, and hook portion is U-shaped, is connected on second step, and makes first electrode pin as far as possible
310 and the thickness of second electrode pin 320 and the height of second step it is equal, make the thickness and first of the first non-electrode pin 33
The height of step is equal, so as to so that first electrode pin 310 and second electrode pin 320 carry out with second step it is complementary,
First non-electrode pin 33 carries out complementation with first step, avoids increasing the height of whole two-phase coupling inductor, such as Figure 11-14
It is shown.
Certainly, first electrode pin 310, equal 320 and first non-electrode pin 33 of second electrode pin be not limited in for
Hook formation, or other concrete structures, its concrete structure can be determined according to actual conditions, and the present invention is implemented
Example does not do this particular determination, can realize the purpose of the embodiment of the present invention.
Further, as shown in fig. 7, the second winding is U-shaped, the 3rd electrode pin 410 and the 4th electrode pin 420 are
Hook formation, and be connected on second step；Second non-electrode pin 43 is hook formation, and is connected on the 3rd step.
Specifically, the second winding 4 in the embodiment of the present invention is specially U-shaped structure, and the 3rd electrode pin 410 and the
Four electrode pins 420 are hook formation, and hook portion is U-shaped, is connected on second step, and makes the 3rd electrode pin as far as possible
410 and equal with the height of second step with the thickness of the 4th electrode pin 420, make the thickness and of the second non-electrode pin 43
The height of one step is equal, so as to so that first electrode pin 310 and second electrode pin 320 carry out mutually with second step
Mend, the second non-electrode pin 43 carries out complementation with first step, avoids increasing the height of whole two-phase coupling inductor, such as schemes
Shown in 11-14.
Certainly, the 3rd electrode pin 410, the 4th electrode pin equal 420 and the first non-electrode pin 43 be not limited in for
Hook formation, or other concrete structures, its concrete structure can be determined according to actual conditions, and the present invention is implemented
Example does not do this particular determination, can realize the purpose of the embodiment of the present invention.
Specifically, in order to ensure two-phase coupling inductor has preferable performance, is preferably made in the embodiment of the present invention
The width of one side column 11 and the second side column 15 is equal；Make the width of the first secondary secondary center pillar 14 of center pillar 12 and second equal.
Certainly, the specific width of the secondary center pillar 14 of the secondary center pillar 12 and second of the first side column 11, the second side column 15, first can root
It is determined according to actual conditions, the embodiment of the present invention does not do this particular determination.
In order to further ensure that two-phase coupling inductor has preferable performance, the embodiment of the present invention preferably makes first
Wire casing 101, the second wire casing 102, the width of the 3rd wire casing 103 and the 4th wire casing 104 are equal.
Certainly, the width of each wire casing can not also be equal, can be specifically determined according to actual conditions, and each
The specific width value of wire casing can also be determined according to actual conditions, and the application does not do this particular determination.
Optionally, the thickness of the first magnetic core 1 is not more than the first predetermined threshold value, and the thickness of the second magnetic core 2 is pre- no more than second
If threshold value.
Optionally, the first predetermined threshold value is 2mm；Second predetermined threshold value is 1mm.
Optionally, the thickness of the first magnetic core 1 in the embodiment of the present invention is not more than 2mm, and the thickness of the second magnetic core 2 is not more than
1mm, also, the specific thickness value of the first magnetic core 1 and the second magnetic core 2 can be determined the embodiment of the present invention according to actual conditions
This is not particularly limited.In addition, the length of the first magnetic core 1 and the second magnetic core 2 in the application can be no more than 20.5mm, it is wide
Degree can be no more than 11.5mm, and certainly, its concrete numerical value can be determined the embodiment of the present invention to this not according to actual conditions
Make particular determination.
Optionally, the first winding 3 and the second winding 4 are the winding for forming tin plating copper sheet punching press bending.
Certainly, it is also not limited to make the first winding 3 and the second winding 4 using tin plating copper sheet, others can also be used
Conductive material makes the first winding 3 and the second winding 4, does not limit specifically.
As it can be seen that the 3rd of the first conductor piece and the second conductor piece of the first winding in the embodiment of the present invention and the second winding the
Conductor piece and the 4th conductor piece is interlaced is arranged in each wire casing of the first magnetic core, so that the first winding is by main center pillar
In being looped around with the second secondary center pillar, make in the first secondary center pillar and main center pillar be looped around by the second winding, and main center pillar is by first
Winding and the second winding are common circular, and the size of the coefficient of coup of whole two-phase coupling inductor is secondary by the first secondary center pillar and second
The area of center pillar determines, it is possible to there is the first secondary center pillar and the second secondary center pillar of different in width according to design is actually needed,
And then make two-phase coupling inductor that there is the corresponding coefficient of coup, also can be by the first secondary center pillar and the second secondary center pillar
Width is adjusted to be adjusted to the coefficient of coup.The embodiment of the present invention is without additionally setting secondary magnetic circuit, so as to reduce
The height of two-phase coupling inductor, makes two-phase coupling inductor lightening, and then is conducive to the lightening of power supply and terminal device
Design.
On the basis of above-described embodiment, the embodiment of the present invention additionally provides a kind of power supply, including two-phase coupling described above
Close inductor.
It should be noted that the embodiment of the present invention is conducive to the lightening of power supply, and then be conducive to the frivolous of terminal device
Change design.
In addition, it refer to above-mentioned reality for specific introduce of two-phase coupling inductor involved in the embodiment of the present invention
Example is applied, details are not described herein by the application.
It should also be noted that, in the present specification, relational terms such as first and second and the like be used merely to by
One entity or operation are distinguished with another entity or operation, without necessarily requiring or implying these entities or operation
Between there are any actual relationship or order.Moreover, term " comprising ", "comprising" or its any other variant meaning
Covering non-exclusive inclusion, so that process, method, article or equipment including a series of elements not only include that
A little key elements, but also including other elements that are not explicitly listed, or further include for this process, method, article or
The intrinsic key element of equipment.In the absence of more restrictions, the key element limited by sentence "including a ...", is not arranged
Except also there are other identical element in the process, method, article or apparatus that includes the element.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or use the present invention.
A variety of modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, it is of the invention
The embodiments shown herein is not intended to be limited to, and is to fit to and the principles and novel features disclosed herein phase one
The most wide scope caused.
Claims (10)
1. a kind of two-phase coupling inductor, applied to power supply, it is characterised in that including the first magnetic core, the second magnetic core, the first winding
Wound with second, wherein：
First magnetic core is connected with the second magnetic core face, forms the flux circuit of coupling inductor；First magnetic core
In the side that is connected with second magnetic core be equipped with 5 magnetic poles, each magnetic pole respectively is in the first side column, the first pair
Column, main center pillar, the second secondary center pillar and the second side column, per two neighboring magnetic pole between form a wire casing, each wire casing according to
Secondary is respectively the first wire casing, the second wire casing, the 3rd wire casing and the 4th wire casing；First winding is equipped with the first conductor piece, second
The end of conductor piece and the first non-electrode pin, first conductor piece and second conductor piece is respectively equipped with first electrode and draws
Foot and second electrode pin；Second winding is equipped with the 3rd conductor piece, the 4th conductor piece and the second non-electrode pin, and described the
The end of three conductor pieces and the 4th conductor piece is respectively equipped with the 3rd electrode pin and the 4th electrode pin；First conductor
Piece, second conductor piece, the 3rd conductor piece and the 4th conductor piece be respectively arranged at the first wire casing, the 3rd wire casing,
In second wire casing and the 4th wire casing.
2. two-phase coupling inductor according to claim 1, it is characterised in that a side of the first magnetic core upper surface
Edge is equipped with first step；The both sides of the edge of the bottom of second magnetic core are respectively equipped with second step and the 3rd step.
3. two-phase coupling inductor according to claim 2, it is characterised in that described first winds to be U-shaped, and described first
Electrode pin and the second electrode pin are hook formation, and are connected on the second step；First non-electrical
Pole pin is hook formation, and is connected on the first step.
4. two-phase coupling inductor according to claim 3, it is characterised in that described second winds to be U-shaped, and the described 3rd
Electrode pin and the 4th electrode pin are hook formation, and are connected on the second step；Described second is non-electrode
Pin is hook formation, and is connected on the 3rd step.
5. according to the two-phase coupling inductor described in claim 1-4 any one, it is characterised in that first side column and institute
The width for stating the second side column is equal；The width of described first secondary center pillar and the second secondary center pillar is equal.
6. two-phase coupling inductor according to claim 5, it is characterised in that first wire casing, second wire casing,
The width of 3rd wire casing and the 4th wire casing is equal.
7. two-phase coupling inductor according to claim 6, it is characterised in that the thickness of first magnetic core is no more than the
One predetermined threshold value, the thickness of second magnetic core are not more than the second predetermined threshold value.
8. two-phase coupling inductor according to claim 7, it is characterised in that first predetermined threshold value is 2mm；It is described
Second predetermined threshold value is 1mm.
9. two-phase coupling inductor according to claim 8, it is characterised in that first winding and the described second winding
It is the winding for forming tin plating copper sheet punching press bending.
10. a kind of power supply, it is characterised in that including the two-phase coupling inductor as described in claim 1 to 9 any one.
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| CN112071580A (en) * | 2020-08-14 | 2020-12-11 | 南京博兰得电子科技有限公司 | Coupling inductor |
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| CN107946046B (en) | 2024-03-29 |
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