CN104051131B - Integrated inductor assembly and its method of assembling - Google Patents
Integrated inductor assembly and its method of assembling Download PDFInfo
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- CN104051131B CN104051131B CN201410093338.6A CN201410093338A CN104051131B CN 104051131 B CN104051131 B CN 104051131B CN 201410093338 A CN201410093338 A CN 201410093338A CN 104051131 B CN104051131 B CN 104051131B
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Abstract
There is provided integrated inductor assembly (102;1300;1400;1500;1600;1700).Integrated inductor assembly includes magnetic core (138;1602;1702;1800), the first inductor (104) and the second inductor (106).Magnetic core has first side, relative second side and the opening (166) being limited in magnetic core.Opening extends into magnetic core from least one of first side and second side.First inductor includes inductively being connected to first conductive winding (140) of magnetic core.First conductive winding includes the first short circuit section (194) being positioned in opening.Second inductor includes inductively being connected to second conductive winding (142) of magnetic core.Second conductive winding includes the second short circuit section (200) being positioned in opening.First and second inductors can be configured to operation independently of one another.
Description
Cross-Reference to Related Applications
The priority of the U.S. Provisional Patent Application No. 61/782,961 submitted to this application claims on March 14th, 2013,
The full text of this application is incorporated herein by reference.
Technical field
The field of embodiment relates generally to power electronic device, and more particularly, to in power electronic device
Integrated inductor (inductor) component used in part.
Background technology
High-density power electronic circuit usually needs to use multiple magneto-electronic components for various purposes, including accumulation of energy, letter
Number isolation, signal filtering, energy transmission and power dividing.With the increasing of the demand of the electronic unit to more power density
Plus, become more to wish to be integrated into two or more magneto-electronic components of such as multiple inductors in identical core or structure.
It is well known, however, that integrated magnet assembly be usually deficiently configured to allow for multiple windings and made on single structure
Make and operate independently of one another.As a result, when multiple parts are operating independently in given electronic circuit, separate core is used
Or structure, so as to increase the number and size of the part needed for giving operation, and reduce the power density of given electronic circuit.
The content of the invention
On the one hand, there is provided a kind of integrated inductor assembly.The integrated inductor assembly includes magnetic core, the first sense
Answer device and the second inductor.Magnetic core has first side, relative second side and the opening being limited in magnetic core.Opening is from the
At least one of one side and second side extend into magnetic core.First inductor include inductively connection (couple, or
" coupling ") to magnetic core the first conductive winding.First conductive winding includes the first short circuit section being positioned in opening.Second sense
Answering device includes inductively being connected to the second conductive winding of magnetic core.Second conductive winding includes the second short circuit being positioned in opening
Section.First and second inductors can be configured to operation independently of one another.
On the other hand, there is provided a kind of method for assembling integrated inductor assembly.The method includes：Magnetic core is provided,
It has first side, relative second side and an opening being limited in magnetic core, and the opening is from first side and second side
At least one of extend into magnetic core；Offer includes the first conductive winding of the first short circuit section；Offer includes the second short circuit
Second conductive winding of section；First conductive winding is inductively connected into magnetic core to form the first inductor, the first conduction around
Group connection causes that the first short circuit section is positioned in opening；And be inductively connected to magnetic core to form by the second conductive winding
Two inductors, the second conductive winding connection causes that the second short circuit section is positioned in opening, and the first and second conductive windings
Inductively it is connected to magnetic core so that the first and second inductors can be configured to operation independently of one another.
It yet still another aspect, there is provided a kind of magnetic core for being used in integrated inductor assembly.Magnetic core includes limiting
First of the first side of magnetic core, limit second of second side of the magnetic core relative with first side and be limited to
Opening in magnetic core.Second is separately formed and is attached to first with first.In first and second at least one
It is individual with being limited to multiple passages therein.Each in passage is configured to receive conductive winding to form inductor.Open
Mouth extends into magnetic core from least one of first side and second side.Each in passage extends into opening, and
And be closed in magnetic core between first and second.
Brief description of the drawings
Fig. 1 is the schematic diagram of the example electronic system of the inductor assembly for including integrated.
Fig. 2 is the perspective view of inductor assembly integrated shown in Fig. 1, and the component includes magnetic core and winding assembly.
Fig. 3 is the exploded view of inductor assembly integrated shown in Fig. 2.
Fig. 4 is the top view of the part of magnetic core shown in Fig. 2.
Fig. 5 is the end-view of the part of magnetic core shown in Fig. 4.
Fig. 6 is the top view of another part of magnetic core shown in Fig. 2.
Fig. 7 is the end-view of the part of magnetic core shown in Fig. 6.
Fig. 8 is the side view of winding assembly shown in Fig. 2 and Fig. 3.
Fig. 9 is the perspective view of winding assembly shown in Fig. 8.
Figure 10 is another perspective view of winding assembly shown in Fig. 8.
Figure 11 is the schematic diagram of the integrated inductor assembly shown in Fig. 2 and Fig. 3, is shown by integrated inductor group
The magnetic flux that the operation of first inductor and the second inductor of part is produced.
Figure 12 is the schematic diagram of the circuit equivalent of the integrated inductor assembly shown in Fig. 2 and Fig. 3.
Figure 13 is the end-view of the first alternative integrated induction device assembly.
Figure 14 is the end-view of the second alternative integrated induction device assembly.
Figure 15 is the end-view of the 3rd alternative integrated induction device assembly.
Figure 16 is the perspective view of the 4th alternative integrated induction device assembly, and it has four formula magnetic cores.
Figure 17 is the perspective view of the 5th alternative integrated induction device assembly, and it has three-member type magnetic core.
Figure 18 is the top view of the first alternative magnetic core, and it is configured to receive four conductive windings to be integrated with four to be formed
The inductor assembly of inductor.
Figure 19 is the flow chart for assembling the illustrative methods of integrated inductor assembly.
Although the specific features of various embodiments may show in some accompanying drawings and not shown in other accompanying drawings, this
For the sake of convenience.Any feature of any accompanying drawing can combine any other accompanying drawing any feature be cited and/
Or it is claimed.
Reference：
100 electronic systems
102 integrated induction device assemblies
104 first inductors
106 second inductors
108 first circuits
110 second circuits
112 printed circuit board (PCB)s
114 first DC voltage sources
116 first switching devices
118 first diodes
120 first capacitors
122 first loads
124 first controllers
126 second DC voltage sources
128 second switching devices
130 second diodes
132 second capacitors
134 second loads
136 second controllers
138 magnetic cores
140 first conductive windings
142 second conductive windings
144 winding assemblies
146 mouldings
The first side of 148 magnetic cores
The second side of 150 magnetic cores
The first end of 152 magnetic cores
The second end of 154 magnetic cores
The leading flank of 156 magnetic cores
The trailing flank of 158 magnetic cores
First of 160 magnetic cores
Second of 162 magnetic cores
164 core bridges
166 openings
168 passages
The inner surface of 170 first
172 a pair of channels
174 second pairs of passages
The central area of 176 inner surfaces
The laterally outside region of 178 inner surfaces
The inner surface of 180 second
182 first sensing sections
184 second sensing sections
186 first pairs of lead segments
188 lead segments
190 first pairs of sensing sections
192 sensing sections
194 first short circuit sections
196 second pairs of passages
198 second pairs of sensing sections
200 second short circuit sections
202 overlap lengths
The length of 204 integrated induction device assemblies
1300 first alternative integrated induction device assemblies
1302 gaps
1400 second alternative integrated induction device assemblies
1402 gaps
1500 the 3rd alternative integrated induction device assemblies
1502 gaps
1504 spacers
1600 the 4th alternative integrated induction device assemblies
1602 4 formula magnetic cores
First of 1604 magnetic cores
Second of 1606 magnetic cores
The 3rd of 1608 magnetic cores
The 4th of 1610 magnetic cores
1700 the 5th alternative integrated induction device assemblies
1702 three-member type magnetic cores
1704 the 3rd
1800 first alternative magnetic cores
1802 a pair of channels
1804 isolation openings.
Specific embodiment
This document describes the exemplary embodiment of integrated inductor assembly.Integrated inductor assembly includes magnetic core, the
One inductor and the second inductor.Magnetic core has first side, relative second side and the opening being limited in magnetic core.Opening
Magnetic core is extended into from least one of first side and second side.First inductor includes inductively being connected to magnetic core
First conductive winding.First conductive winding includes the first short circuit section being positioned in opening.Second inductor is included inductively
It is connected to the second conductive winding of magnetic core.Second conductive winding includes the second short circuit section being positioned in opening.First and
Two inductors can be configured to operation independently of one another.
Embodiment described herein provide integrated inductor assembly, the component include can combine with one another and independently
At least two inductors of operation.Integrated inductor assembly includes with the magnetic core for being limited to opening therein and inductively joins
It is connected to the winding assembly of magnetic core.The sensing section of winding assembly is closed in magnet assembly, and will sense section interconnection
Short circuit section is positioned in the opening of magnetic core.Such configuration reduces and/or minimizes the multiple sensings being formed on magnetic core
Mutual inductance between device, so that inductor can be operated independently of one another.Additionally, multiple inductors are integrated on single magnetic core
The number and size of the part needed for advantageously reducing the circuit (for example, power inverter) of the given type of construction.
Fig. 1 is the schematic diagram of example electronic system 100, and the system includes thering is the first inductor 104 and the second sensing
The integrated inductor assembly 102 of device 106.Electronic system 100 also includes first circuit of the manufacture on printed circuit board (PCB) 112
108 and second circuit 110.
In the exemplary embodiment, the first circuit 108 and second circuit 110 are buck (buck) switching DC-DC electricity
Buckling parallel operation.Specifically, the first circuit 108 includes the first DC voltage source 114, the first switching device 116, the first diode
118th, the first inductor 104, first the 120, first load 122 of capacitor and the first controller 124.First DC voltage source 114
Plus end be connected to the first switching device 116, its cathode terminal for being connected to the first inductor 104 and the first diode 118 again.
The anode tap of the first diode 118 is connected to loop input of the first DC voltage source 114.First capacitor 120 and first
122 parallel connections are loaded, and the parallel connection that the first inductor 104 is connected between the first capacitor 120 and the first load 122 connects
The first side for connecing.First switching device 116 is operated by the first controller 124, and the first controller 124 is in open position and closure position
Switch the first switching device 116 between putting, to produce the output voltage V of the first circuit 108out, the voltage is measured as across first
The voltage drop of load 122.
In the exemplary embodiment, second circuit 110 has and the identical framework of the first circuit 108.Specifically, second
Circuit 110 includes the second DC voltage source 126, the second switching device 128, the second diode 130, second the 106, second electricity of inductor
Container 132, second loads 134 and second controller 136.The plus end of the second DC voltage source 126 is connected to the second switching dress
128 are put, its cathode terminal for being connected to the second inductor 106 and the second diode 130 again.The anode tap connection of the second diode 130
It is connected to loop input of the second DC voltage source 126.Second capacitor 132 and the second 134 parallel connections of load, and second
Inductor 106 is connected to the side being connected in parallel between the second capacitor 132 and the second load 134.Second switching device 128
Operated by second controller 136, second controller 136 switches the second switching device 128 between the open and the closed positions,
To produce the output voltage V of second circuit 110out, the voltage be measured as across second load 134 voltage drop.
In the exemplary embodiment, the first switching device 116 and the second switching device 128 for transistor switch (it is specific and
Speech, MOSFET), and the first controller 124 and second controller 136 are configured to the control signal of output pulse width modulation respectively
To the first switching device 116 and the gate electrode side of the second switching device 128.In an alternative embodiment, the first switching device 116 and/
Or second switching device 128 can be any suitable switching device, it enables that electronic system 100 is as described herein and acts as
With.Additionally, the first controller 124 and/or second controller 136 can be configured to respectively to the first switching device 116 and second
Switching device 128 provides any suitable control signal, and the signal enables that electronic system 100 is as described herein and works.
As described in more detail herein, the construction of integrated induction device assembly 102 causes the first inductor 104 and the second sense
Answer device 106 can independently of one another and combine with one another (for example, as part of same circuits) operate.Therefore, although collection
Into inductor assembly 102 combine separate buck and switch DC-DC voltage changer (that is, the first circuit 108 and second circuit
110) describe, but embodiment described herein can be implemented in any suitable electrical architecture, and the framework causes integrated inductor
Component 102 as described herein can work, including such as multi-phase voltage changer, wherein the first inductor 104 and the second sense
Device 106 is answered to be operated with about 90 ° or 180 ° of phase difference out-phase.
Fig. 2 is the perspective view of integrated inductor assembly 102, and Fig. 3 is the decomposition of integrated inductor assembly 102
Figure.In the exemplary embodiment, integrated inductor assembly 102 includes magnetic core 138, is inductively connected to magnetic core 138 to be formed
First conductive winding 140 (Fig. 3) of the first inductor 104 and magnetic core 138 is inductively connected to form the second inductor
106 the second conductive winding 142.First conductive winding 140 and the second conductive winding 142 collectively referred to herein as winding assembly,
It is indicated generally at 144.In the exemplary embodiment, winding assembly 144 also includes mouldings 146 (Fig. 8-10), is risen for clear
See and the mouldings 146 are saved from Fig. 2 and Fig. 3.
In the exemplary embodiment, magnetic core 138 has the shape of general rectangular, and it includes：First side 148；Relatively
Second side 150；Relative first end 152 and the second end 154, it is between first side 148 and second side 150
Extend；And leading flank 156 and relative trailing flank 158, it is between first side 148 and second side 150 and first
Extend between end 152 and the second end 154.Additionally, in the exemplary embodiment, magnetic core 138 includes first 160, second
Part 162, multiple core bridges 164 and the opening 166 being limited in magnetic core 138.
Fig. 4 is the top view of second 162 of magnetic core 138, and Fig. 5 is the end-view of second 162 of magnetic core 138.
Fig. 6 is the top view of first 160 of magnetic core 138, and Fig. 7 is the end-view of first 160 of magnetic core 138.Exemplary
In embodiment, first 160 and second 162 manufactures the magnetic block being integrated.First 160 and second 162 by including
Such as ferritic any suitable magnetic material is made, and the material enables integrated inductor assembly 102 such as this paper institutes
State and work.Additionally, first 160 and second 162 is made up of identical magnetic material.First 160 and second 162 points
Turn up the soil and be fabricated and attached to each other form magnetic core 138.In an alternative embodiment, first 160 and/or second 162 can be with
Integral magnetic block (see, for example, Figure 16 and 17) is not manufactured.
In the exemplary embodiment, first 160 first side 148 of restriction magnetic core 138, and second 162 restriction
The relative second side 150 of magnetic core 138.Additionally, first 160 and second 162 first end for jointly limiting magnetic core 138
Portion 152, the second end 154, leading flank 156 and trailing flank 158.
Additionally, in the exemplary embodiment, first 160 includes being limited to multiple passages 168 therein.The quilt of passage 168
It is configured to receive a part for conductive winding 140 and 142 to form in the first inductor 104 and the second inductor 106.
Specifically, passage 168 is limited on the inner surface 170 of first 160, and each passage 168 is from opening 166 towards first end
An extension in portion 152 and the second end 154.Additionally, in the exemplary embodiment, passage 168 is around corresponding first end
Portion 152 or the second end 154 extend to the first side 148 of magnetic core 138 so that when integrated inductor assembly 102 is assembled
When conductive winding 140 and 142 flushed with corresponding first end 152 or the second end 154.Additionally, when integrated inductor group
When part 102 is assembled, passage 168 is between first side 148 and second side 150, specifically in first 160 and second
It is closed between part 162 in magnetic core 138.
As shown in figure 3, multiple passages 168 include first pair of 172 passage 168 and second pair of 174 passage 168.First pair 172
First end 152 of the passage 168 from opening 166 towards magnetic core 138 extends, and second pair of 174 passage 168 is from opening 166 towards magnetic
The second end 154 of core 138 extends.Passage 168 in first pair of 172 passage 168 is substantially parallel to each other, and second pair
Passage 168 in 174 passages 168 is substantially parallel to each other.As shown in fig. 6, every a pair 172 and 174 passages 168 are by inner surface
170 are divided into central area 176 and laterally outside region 178.
Second 162 include inner surface 180, when integrated inductor assembly 102 is assembled, the inner surface 180 towards
The inner surface 170 of first 160.In the exemplary embodiment, the inner surface 180 of second 162 is substantially planar, and
Do not include any passage wherein.In an alternative embodiment, the inner surface 180 of second 162 may include corresponding to first 160
The passage of passage 168.In other alternative, the inner surface 170 of first can be substantially planar (that is, first
Part 160 does not include passage 168), and passage 168 is limited in the inner surface 180 of second 162.
Referring to Fig. 2, magnetic core 138 is divided into the first sensing section 182 and the second sensing section 184 by opening 166.First sensing
Section 182 extends to the first end 152 of magnetic core 138 from opening 166, and including first pair of 172 passage 168.Second sensing
Section 184 extends to the second end 154 of magnetic core 138 from opening 166, and including second pair of 174 passage 168.Be open 166 quilts
Be configured to magnetic flux of the limitation from one of the first inductor 104 and the second inductor 106 hinder or the first inductor 104 of influence or
Another operation in second inductor 106.
In the exemplary embodiment, opening 166 has the shapes of general rectangular, and from first side 148 to the second
Side 150 extends through magnetic core 138.That is, opening 166 extends through both first 160 and second 162.Alternatively implementing
In example, opening 166 can have enables any suitable shape for working as described herein of integrated induction device assembly 102.Additionally,
In an alternative embodiment, opening 166 can extend into magnetic core from the only one in first side 148 or second side 150
138.That is, opening 166 can not extend completely through magnetic core 138.In some suitable embodiments, the opening in magnetic core 138
166 are filled with one or more nonmagnetic substance, to prevent foreign matter from entering opening and hinder the behaviour of integrated induction device assembly 102
Make.
Core bridge 164 extends between the first sensing sensing section 184 of section 182 and second and interconnects them.Additionally, many
Individual core bridge 164 at least partially defines opening 166.In the exemplary embodiment, include for first 160 being arranged on opening 166
Two core bridges 164 on opposite side, and second 162 two core bridges 164 including being arranged on the opposite side of opening 166.
In the exemplary embodiment, core bridge 164 be configured to first sensing section 182 and second sensing section 184 it
Between low magnetic resistance magnetic flux path is provided so that when first sensing section 182 and second sensing section 184 in one it is not corresponding
First inductor 104 and the energy of the second inductor 106 " shared " during the operation saturation of the first inductor 104 or the second inductor 106
Magnetic core 138.In the exemplary embodiment, each core bridge 164 is made up of such as ferritic suitable magnetic material.Additionally, showing
In example property embodiment, core bridge 164 is integrally formed with first 160 of magnetic core 138 or second 162, but standby
Select in embodiment, one or more core bridges 164 can be separately formed with first 160 and/or second 162.Magnetic core 138 is
" shared " between one inductor 104 and the second inductor 106 increased when in the first inductor 104 and the second inductor 106
One under low-load or low current operate when the first inductor 104 and the second inductor 106 saturation current (that is, magnetic core
Electric current during 138 saturation) because core bridge 164 enable inductor 104 and 106 using it is original not by the first inductor 104 or
The part of the magnetic core 138 of operation saturation of one of second inductor 106 under low-load or low current.
As described above, the first inductor 104 includes inductively being connected to the first conductive winding 140 of magnetic core 138, and the
Two inductors 106 include inductively being connected to the second conductive winding 142 of magnetic core 138.Fig. 8 is the side view of winding assembly 144,
It includes the first conductive winding 140, the second conductive winding 142 and mouldings 146.Fig. 9 and Figure 10 are the perspectives of winding assembly 144
Figure.
Referring to Fig. 3 and Fig. 8-10, the first conductive winding 140 is made up of suitable conductive material (for example, punching press copper), and
Interconnected including first pair of 186 lead segment, 188, first pair 190 sensing section 192 and by first pair 190 sensing section 192
The first short circuit section 194.
Sensing section 192 in first pair 190 sensing section 192 is positioned in first pair of 172 passage 168.First pair 190
Each first end 152 of sensing section 192 from opening 166 towards magnetic core 138 in sensing section 192 extends to first pair 186
Corresponding lead segment 188 in lead segment 188.Sensing section 192 in first pair 190 sensing section 192 is in the first side
It is closed in magnetic core 138 between face 148 and second side 150, specifically between first 160 and second 162.The
Sensing section 192 in a pair 190 sensing sections 192 is set in this first plane.
First short circuit section 194 is positioned in opening 166, and the sensing section in first pair 190 sensing section 192
Extend between 192 and interconnect them.In the exemplary embodiment, the first short circuit section 194 is oriented to be substantially perpendicular to
Each sensing section 192 in first pair 190 sensing section 192.Additionally, in the exemplary embodiment, the first short circuit section 194
With substantially planar configuration, and the first planar tilt ground being disposed therein relative to first pair 190 sensing section 192
It is angled.Specifically, the first short circuit section 194 is obliquely at an angle of towards the first side 148 of magnetic core 138.Additionally, in example
Property embodiment in, the first short circuit section 194 has bigger than each sensing section 192 in first pair 190 sensing section 192
Cross-sectional area.
Each lead segment 188 in first pair of 186 lead segment 188 is connected at the first end 152 of magnetic core 138
Corresponding sensing section 192 in first pair 190 sensing section 192.In the exemplary embodiment, first pair of 186 lead segment
Each lead segment 188 in 188 is from the corresponding sensing section 192 in first pair 190 sensing section 192 towards magnetic core 138
First side 148 is extended with about 90 ° of angle.Additionally, in the exemplary embodiment, it is every in first pair of 186 lead segment 188
Individual lead segment 188 extends beyond the first side 148 of magnetic core 138 so that first pair of 186 lead segment 188 by magnetic core 138 with
The surface (for example, printed circuit board (PCB)) that integrated induction device assembly 102 is welded or is installed to is spaced apart.
In the exemplary embodiment, the second conductive winding 142 has match somebody with somebody substantially similar with the first conductive winding 140
Put.Specifically, the second conductive winding 142 is made up of suitable conductive material (for example, punching press copper), and including second pair
196 lead segments 188, second pair 198 sense section 192 and the second short circuit for interconnecting second pair 198 sensing section 192
Section 200.
Sensing section 192 in second pair 198 sensing section 192 is positioned in second pair of 174 passage 168.Second pair 198
Each the second end 154 of sensing section 192 from opening 166 towards magnetic core 138 in sensing section 192 extends to second pair 196
Corresponding lead segment 188 in lead segment 188.Sensing section 192 in second pair 198 sensing section 192 is in the first side
It is closed in magnetic core 138 between face 148 and second side 150, specifically between first 160 and second 162.The
Sensing section 192 in two pairs 198 sensing sections 192 is arranged in the second plane, and the second plane is put down in the exemplary embodiment
First plane of row first pair 190 sensing section 192 disposed therein.Additionally, in the exemplary embodiment, the second plane be with
It is provided with first pair 190 first plane identical plane of sensing section 192.So, the first pair 190 sensing He of section 192
Second pair 198 sensing section 192 is arranged in substantially the same plane in the exemplary embodiment.
Second short circuit section 200 is positioned in opening 166, and the sensing section in second pair 198 sensing section 192
Extend between 192 and interconnect them.In the exemplary embodiment, the second short circuit section 200 is oriented to be substantially perpendicular to
Each sensing section 192 in second pair 198 sensing section 192.Additionally, in the exemplary embodiment, the second short circuit section 200
With substantially planar configuration, and relative to second pair 198 disposed therein sensing section 192 the second planar tilt into
Angle.Specifically, the second short circuit section 200 is obliquely at an angle of towards the second side 150 of magnetic core 138.Additionally, exemplary
In embodiment, the second short circuit section 200 has the bigger horizontal stroke of each the sensing section 192 sensed than second Dui 198 in section 192
Sectional area.As shown in figure 8, the first short circuit section 194 and the second short circuit section 200 spend angulation away from each other at about a same angular
Degree.More specifically, the first short circuit section 194 with the angle [alpha] relative to the first plane towards magnetic core 138 148 one-tenth of first side
Angle, and the second short circuit section 200 is with the angle beta (being substantially equal to angle [alpha]) relative to the second plane towards the of magnetic core 138
Two side faces 150 are at an angle of.Angle [alpha] and β can be any proper angles in the range of about 90 ° to about 180 °.It is real in diagram
Apply in example, angle [alpha] and β are for about 120 °.Additionally, as shown in figure 8, when through opening 166, (specifically edge is flat perpendicular to first
Face and/or the direction of observation of the second plane) observation when, the first short circuit section 194 and the second short circuit section 200 are in opening 166
The length that overlaps each other 202.
Each lead segment 188 in second pair of 196 lead segment 188 is connected at the second end 154 of magnetic core 138
Corresponding sensing section 192 in second pair 198 sensing section 192.Therefore, first pair of 186 lead segment 188 and second pair
196 lead segments 188 are arranged on the opposite end of magnetic core 138.In the exemplary embodiment, first pair of 186 lead segment 188 sets
Put on the first end 152 of magnetic core 138, and second pair of lead segment 188 is arranged on the second end 154 of magnetic core 138.
Additionally, in the exemplary embodiment, each lead segment 188 in second pair of 196 lead segment 188 senses from second Dui 198
Corresponding sensing section 192 in section 192 is extended towards the second side 150 of magnetic core 138 with about 90 ° of angle.Additionally, showing
In example property embodiment, each lead segment 188 in second pair of 196 lead segment 188 extends beyond the second side of magnetic core 138
150 so that the surface that magnetic core 138 and integrated induction device assembly 102 are welded or be installed to by second pair of 196 lead segment 188
(for example, printed circuit board (PCB)) is spaced apart.
Referring to Fig. 8-10, the first short circuit section 194 and the second short circuit section 200 are closed in mouldings 146.Mouldings
146 are configured to be received in opening 166.Mouldings 146 can be formed by any suitable mouldings, including such as phenolic resin
Mouldings.The magnetic conductivity of mouldings 146 can be more than or less than the magnetic conductivity of air, depending on the expectation magnetic conductivity in opening 166.
Mouldings 146 need the number of the separate part of assembling by reduction and also by maintaining the first short circuit section 194 and second
The relative position of short circuit section 200 is advantageously integrated the assembling of inductor assembly 102.In an alternative embodiment, can be from winding group
Part 144 saves mouldings 146.
Due to the configuration of the first conductive winding 140 and the second conductive winding 142, the first inductor 104 and the second inductor
106 is the inductor of substantially single turn.In other words, the first conductive winding 140 and the second conductive winding 142 are around magnetic core 138
Winding is no more than individual pen.As a result, the first inductor 104 compares the reduction of multiturn inductor with the DC resistance of the second inductor 106.This
Outward, the inductance of the encapsulation due to sensing section 192 in magnetic core 138, the first inductor 104 and the second inductor 106 can phase
When in known multiturn inductor.
Figure 11 is the schematic diagram of integrated inductor assembly 102, is shown by the first inductor 104 and the second inductor
The magnetic flux that 106 operation is produced, and Figure 12 is the schematic diagram of the circuit equivalent of integrated inductor assembly 102.Integrated sense
The mutual inductance being configured with beneficial to minimum between the first inductor 104 and the second inductor 106 of device assembly 102 is answered (that is, by not
The magnetic flux that same inductor is produced induces electromotive force in an inductor) so that the first inductor 104 and the second sensing
Device 106 can be operated independently of one another.Specifically, because sensing section 192 is closed in magnetic conductivity relatively high
In magnetic core 138, and magnetic core 138 is divided into the first sensing section by the opening 166 with the magnetic conductivity relatively low compared to magnetic core 138
182 and the second sensing section 184, thus the magnetic flux produced by the first inductor 104 and the second inductor 106 is respectively by substantially
It is limited in the first sensing section 182 and the second sensing section 184.As a result, the magnetic flux in opening 166 is significantly less than magnetic core 138
Interior magnetic flux, and mutual inductance between the first inductor 104 and the second inductor 106 is minimized.As shown in figure 12, first
The configuration of each in the inductor 106 of inductor 104 and second is equal to be connected by corresponding short circuit section 194 or 200 and connects
Two inductors (corresponding to sensing section 192) for connecing, short circuit section 194 or 200 is little in magnetic core 138 or does not produce magnetic
It is logical.
Further, since the first short circuit section 194 and the second short circuit section 200 are at an angle of away from each other, thus the first short circuit
The short circuit section 200 of section 194 and second can overlap each other in the opening 166, while still keeping enough distance each other with minimum
Change the mutual inductance between the first inductor 104 and the second inductor 106.Compared to the integrated induction that wherein short circuit section is not at an angle of
Device assembly, such overlap reduces the total length 204 (Fig. 2) of integrated induction device assembly 102, and therefore needs long along component
The significantly bigger spacing spent is to limit mutual inductance.In addition, it is contemplated that the magnetic flux from an inductor 104 or 106 is extended into
The sensing section 182 or 184 of another inductor 104 or 106, core bridge 164 provides the path of relatively low magnetic resistance for such magnetic flux,
This minimizes the interference effect between the magnetic flux from the first inductor 104 and the second inductor 106.
Various modifications can be carried out to integrated induction device assembly 102 to be further minimized or control the He of the first inductor 104
Mutual inductance between second inductor 106, and/or adjust the performance of integrated induction device assembly 102.
For example, Figure 13 is the end-view of the first alternative 1300 of integrated inductor assembly, it has and is arranged on
Gap 1302 between the first side 148 and second side 150 of magnetic core 138, to increase the saturation current of magnetic core 138.Unless
Point out, integrated inductor assembly 1300 is substantially the same with integrated inductor assembly 102 (showing in figs. 2 and 3).
In embodiment shown in Figure 13, gap 1302 be positioned at the inner surface 170 of first 160 central area 176 and second
Between 162 inner surface 180, and extend the whole length of integrated induction device assembly 1300.
Figure 14 is the end-view of the second alternative of integrated inductor assembly 102, and it has and is arranged on magnetic core 138
First side 148 and second side 150 between gap 1402, to increase the saturation current of magnetic core 138.Unless pointed out, collect
Into inductor assembly 1400 it is substantially the same with integrated inductor assembly 102 (showing in figs. 2 and 3).In fig. 14
In shown embodiment, gap 1402 be positioned at the inner surface 170 of first 160 laterally outside region 178 and second 162
Inner surface 180 between, and extend the whole length of integrated induction device assembly 102.
Figure 15 is the end-view of the 3rd alternative 1500 of integrated inductor assembly, and it has and is arranged on magnetic core
Gap 1502 and multiple spacers 1504 between 138 first side 148 and second side 150, to increase the full of magnetic core 138
And electric current.Unless pointed out, integrated inductor assembly 1500 and integrated inductor assembly 102 (showing in figs. 2 and 3) base
It is identical in sheet.In fig .15 in shown embodiment, whole interface of the gap 1502 between first 160 and second 162
Upper extension, and spacer 1504 is arranged on the desired locations between first 160 and second 162, with first 160
And provide mechanical connection between second 162.In fig .15 in shown embodiment, spacer 1504 is by nonmagnetic substance shape
Into.
In embodiment shown in Figure 13-15, gap 1302,1402 and 1502 is without any filler material and therefore
It is air gap.In an alternative embodiment, gap 1302,1402 and/or 1502 can be filled with one or more nonmagnetic substance, including
Such as Mylar, to adjust the characteristic of integrated inductor assembly 1300,1400 and/or 1500.
Figure 16 is the perspective view of the 4th alternative 1600 of integrated inductor assembly, and it has four formula magnetic cores
1602.Unless pointed out, integrated inductor assembly 1600 is basic with integrated inductor assembly 102 (showing in figs. 2 and 3)
It is upper identical.The magnetic core 1602 of integrated inductor assembly 1600 include first 1604, second the 1606, the 3rd 1608, the
Four 1610, multiple core bridges 164 and the opening 166 being limited in magnetic core 1602.
First 1604 and second 1606 is interconnected amongst one another by core bridge 164, and the 3rd 1608 and the 4th 1610 by
Core bridge 164 is interconnected amongst one another.Additionally, the first 1604 and second 1606 common first side 148 for limiting magnetic core 1602, and
3rd 1608 and the 4th 1610 common second side 150 for limiting magnetic core 1602.Additionally, first 1604 and the 3rd
The 1608 common first ends 152 for limiting magnetic core 1602, and second 1606 and the 4th 1610 common restriction magnetic core 1602
The second end 154.First 1604, second the 1606, the 3rd 1608 and the 4th 1610 limits magnetic core 1602 jointly
Leading flank 156 and trailing flank 158.
First pair of 172 passage 168 (being shown in Fig. 3) is limited on the inner surface of first 1604, and second pair 174
Passage 168 (being shown in Fig. 3) is limited on the inner surface of second 1606.First pair 190 sensing section 192 (shows in Fig. 3
Go out) it is positioned in the passage 168 of the first couple 172 on first 1604, and in the side of first side 148 and second of magnetic core 1602
It is closed in magnetic core 1602 between face 150, specifically between first 1604 and the 3rd 1608.Second pair of 174 passage
168 (being shown in Fig. 3) are limited on the inner surface of second 1606.Second pair 198 sensing section 192 (being shown in Fig. 3) is fixed
Position in second pair of 174 passage 168, and between the first side 148 and second side 150 of magnetic core 1602, specifically exist
It is enclosed in magnetic core 1602 between second 1606 and the 4th 1610.
In figure 16 in shown embodiment, core bridge 164 and first 1604, second the 1606, the 3rd 1608 and
Each in four 1610 is dividually manufactured.Additionally, core bridge 164 be made up of single-piece magnetic material and be connected to each other with to
Integrated induction device assembly 1600 provides improved mechanical stability.
Figure 17 is the perspective view of the 5th alternative 1700 of integrated inductor assembly, and it has three-member type magnetic core
1702.Unless pointed out, integrated inductor assembly 1700 is with integrated inductor assembly 1600 (figure 16 illustrates) substantially
It is identical.Especially, integrated inductor assembly 1700 is substantially the same with integrated inductor assembly 1600, except the 3rd
1608th, the 4th 1610 and by the 3rd 1608 and the 4th 1610 interconnection core bridge 164 be replaced by the 3rd of solid one
Part 1704.Additionally, the opening 166 in magnetic core 1702 only extends to the 3rd 1704 from first side 148.That is, opening 166 is not prolonged
Extend through whole magnetic core 138.
Although integrated inductor assembly 102,1300,1400,1500,1600 and 1700 is described as each including two senses
Device is answered, but integrated inductor assembly 102,1300,1400,1500,1600 and 1700 can be modified to include two or more sense
Answer device, such as three, four, six or more inductors.
For example, Figure 18 is the top view of the first alternative of magnetic core 1800, its be configured to receive four conductions around
Group is integrated with the inductor assembly of four inductors to be formed.As shown in figure 18, magnetic core 1800 includes four pairs of 1802 passages 168,
It is all arranged to receive conductive winding for every a pair to form inductor.Magnetic core 1800 also includes two openings 166, each opening
166 have two pairs of 1802 passages 168, its from opening 166 towards the first end 152 and the second end 154 of magnetic core 138 in one
Extend.Additionally, magnetic core 1800 includes the isolation opening 1804 being positioned between opening 166.Isolation opening 1804 is along magnetic core 1800
Longitudinal direction extend, and provide separation between the inductor pair being formed on magnetic core 1800.In the illustrated embodiment, every
Leave mouth 1804 and extend through magnetic core 1800.
Figure 19 is to assemble showing for integrated induction device assembly (the integrated induction device assembly 102 for such as showing in figs. 2 and 3)
The flow chart of example property method 1900.1902 magnetic cores, such as magnetic core 138 are provided.Magnetic core includes first side, relative second side
With the opening being limited in magnetic core.Opening extends into magnetic core from least one of first side and second side.There is provided
1904 first conductive windings, such as the first conductive winding 140.First conductive winding includes the first short circuit section, and such as first is short
Connect section 194.1,906 second conductive windings, such as the second conductive winding 142 are provided.Second conductive winding includes the second short circuit area
Section, such as the second short circuit section 200.First conductive winding is inductively coupled 1908 to magnetic core to form the first inductor, example
Such as the first inductor 104.First conductive winding is connected to magnetic core so that the first short circuit section is positioned in opening.Second is led
Electric winding inductively couples 1910 to magnetic core to form the second inductor, such as the second inductor 106.Second conductive winding senses
Be connected to magnetic core so that the second short circuit section be positioned in opening in.Additionally, the first and second conductive windings join sensedly
It is connected to magnetic core so that the first and second inductors can be configured to operation independently of one another.
This document describes the exemplary embodiment of integrated inductor assembly.Integrated inductor assembly includes magnetic core, the
One inductor and the second inductor.Magnetic core has first side, relative second side and the opening being limited in magnetic core.Opening
Magnetic core is extended into from least one of first side and second side.First inductor includes inductively being connected to magnetic core
First conductive winding.First conductive winding includes the first short circuit section being positioned in opening.Second inductor is included inductively
It is connected to the second conductive winding of magnetic core.Second conductive winding includes the second short circuit section being positioned in opening.First and
Two inductors can be configured to operation independently of one another.
Compared at least some integrated magnet assemblies, in integrated induction device assembly described herein, at least two inductors
Be formed on single magnetic core, and inductor can combine with one another and be operating independently.The sensing section of winding assembly is sealed
Close in magnet assembly, and the short circuit section of section interconnection will be sensed and be positioned in the opening of magnetic core.This configuration provides
Compact integrated induction device assembly, and the mutual inductance being formed between the multiple inductors on magnetic core is fully minimized, to permit
Perhaps the independent operation of inductor.Compared to the same circuit board formed using discrete parts, the compact arrangement of integrated induction device assembly
Also reduce the number and board space of the part needed for forming given circuit.Additionally, forming sense by using shorter winding
Device is answered, and also by using the short circuit section with the bigger cross-sectional area of the sensing section than winding, compared to similar
The multiturn inductor of inductance, the configuration of integrated induction device assembly reduces the DC resistance of inductor formed therein.
In addition, when the inductor of integrated induction device assembly is operated with combining with one another, integrated induction device group as herein described
Part provides the improved performance compared with discrete inductor.Especially, when inductor is operated (for example, by behaviour with combining with one another
It is mutually out of phase about 180 ° of inductors of phase difference) when, compared to for performing the discrete inductor of identical functions, integrated induction device
The energy loss of component reduces because the magnetic flux in magnetic core offsets.
In addition, integrated induction device assembly as herein described provides low magnetic using core bridge between the different sensing sections of magnetic core
Resistance flux path.When the incomplete saturation of section is sensed for one, core bridge allows the different of " shared " magnetic core to sense sections.As a result,
The saturation current of the inductor being formed on magnetic core can increase compared with discrete inductor.
The execution or implementation order operated in embodiments of the invention shown and described herein are not vital,
Except as otherwise noted.That is, except as otherwise noted, can in any order perform operation, and implementation of the invention
Example may include other operation or than less operation disclosed herein.For example, it is contemplated that, before another operation, while or it
Perform afterwards or implementation specific operation is all in the range of aspect of the invention.
Although the specific features of various embodiments of the present invention may not show in other figures in some drawings and, this
For the sake of convenience.Principle of the invention, any feature of accompanying drawing can combine any of any other accompanying drawing
Feature is cited and/or claims.
The written description uses examples to disclose the present invention including optimal mode, and also enables those skilled in the art
It is enough to implement the present invention, including manufacture and use any device or system and perform any method being included.It is of the invention
Patentable scope is defined by the claims, and may include the other examples that those skilled in the art expect.If it is this other
Example have with the indistinguishable structural detail of the literal language of claim, or if they include word with claim
Equivalent structural elements of the face language without essential difference, then this other examples be intended within the scope of the claims.
Claims (8)
1. a kind of integrated inductor assembly (102；1300；1400；1500；1600；1700), including：
Magnetic core (138；1602；1702；1800), it has first side, relative second side and is limited to the magnetic core
Interior opening (166), the opening extends into the magnetic from least one of the first side and the second side
Core；
First inductor (104), its first conductive winding (140) for including inductively being connected to the magnetic core, described first leads
Electric winding includes the first short circuit section (194) of first pair of sensing section and connection first pair of sensing section, described first
Sensing section is arranged in the first plane, and the first short circuit section is positioned in the opening；And
Second inductor (106), its second conductive winding (142) for including inductively being connected to the magnetic core, described second leads
Electric winding includes the second short circuit section (200) of second pair of sensing section and connection second pair of sensing section, described second
Sensing section is arranged in the second plane, and the second short circuit section (200) is positioned in the opening, and described first and second
Short circuit section (194,200) overlaps each other in the opening (166), wherein the opening is towards perpendicular to the first plane and second
At least one of direction of plane extends, wherein first and second inductor can be configured to operation independently of one another.
2. integrated inductor assembly (102 according to claim 1；1300；1400；1500；1600；1700), it is special
Levy and be, the opening (166) extends through the magnetic core (138 from the first side to the second side；1602；
1702；1800).
3. integrated inductor assembly (102 according to claim 1；1300；1400；1500；1600；1700), it is special
Levy and be, described first senses section (192) and described second to (190) senses section (192) to (198) in first He
The magnetic core (138 is closed between second side；1602；1702；1800) in.
4. integrated inductor assembly (102 according to claim 1；1300；1400；1500；1600；1700), it is special
Levy and be, described first senses section (192) to (190) is set in this first plane, and the first short circuit section (194) is relative
It is at an angle of in first planar tilt.
5. integrated inductor assembly (102 according to claim 1；1300；1400；1500；1600；1700), it is special
Levy and be, the magnetic core (138；1602；1702；1800) with the extension between the first side and the second side
First and second relative ends, first conductive winding (140) extends from the opening (166) towards the first end,
And second conductive winding (142) extends from the opening towards the second end.
6. integrated inductor assembly (102 according to claim 1；1300；1400；1500；1600；1700), it is special
Levy and be, also including the mouldings (146) being arranged in the opening (166), the first and second short circuits section (194,
200) it is closed in the mouldings.
7. integrated inductor assembly (102 according to claim 1；1300；1400；1500), it is characterised in that described
Magnetic core (138；1800) including first (160) and second (162), second (162) with described first dividually
Described first is formed and is attached to, wherein the opening (166) extend through described first and described second.
8. integrated inductor assembly (102 according to claim 1；1300；1400；1500；1600；1700), it is special
Levy and be, the magnetic core (138；1602；1702；1800) including the first section (182) and the second section (184), described first
Conductive winding (140) is inductively connected to first section, and second conductive winding (142) is inductively connected to described
Two sections, the magnetic core also includes the multiple core bridges (164) for interconnecting first section and second section, the multiple
Core bridge at least partially defines the opening (166).
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201361782961P | 2013-03-14 | 2013-03-14 | |
| US61/782961 | 2013-03-14 | ||
| US61/782,961 | 2013-03-14 | ||
| US14/196779 | 2014-03-04 | ||
| US14/196,779 | 2014-03-04 | ||
| US14/196,779 US9171665B2 (en) | 2013-03-14 | 2014-03-04 | Integrated inductor assemblies and methods of assembling same |
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| CN104051131A CN104051131A (en) | 2014-09-17 |
| CN104051131B true CN104051131B (en) | 2017-06-20 |
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| US10431373B2 (en) * | 2016-09-06 | 2019-10-01 | Würth Elektronik eiSos Gmbh & Co. KG | Coupled inductor |
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| CN102460608A (en) * | 2009-05-04 | 2012-05-16 | 库柏技术公司 | Magnetic components and methods of manufacturing same |
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| US7468649B2 (en) * | 2007-03-14 | 2008-12-23 | Flextronics International Usa, Inc. | Isolated power converter |
| TWI396368B (en) * | 2009-11-19 | 2013-05-11 | Delta Electronics Inc | Integrated multi-inductor magnetic assembly and multi-loop power factor correction circuit |
| TWI440056B (en) * | 2011-04-13 | 2014-06-01 | Non-high voltage solid-state packaging method of coil electronic component and coil electronic component made by the method |
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