CN108281258A - Asymmetric magnetic coupling arrangement based on centered magnetic field - Google Patents
Asymmetric magnetic coupling arrangement based on centered magnetic field Download PDFInfo
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- CN108281258A CN108281258A CN201810043000.8A CN201810043000A CN108281258A CN 108281258 A CN108281258 A CN 108281258A CN 201810043000 A CN201810043000 A CN 201810043000A CN 108281258 A CN108281258 A CN 108281258A
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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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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/14—Inductive couplings
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
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Abstract
Asymmetric magnetic coupling arrangement based on centered magnetic field, belongs to wireless power transmission field, and it is excessive to solve the problems, such as that the electric energy efficiency of transmission of existing induction type radio energy transmission system is influenced by the relative position of former and deputy side coupling coil.The asymmetric magnetic coupling arrangement：Primary side magnetic core and primary coil are the hollow rectangle body of both ends open.Two open ends of primary side magnetic core are opposite and are square, and two open ends of primary coil are opposite and are square.Primary coil is closely set on primary side magnetic core, and the first open end and the second open end of primary coil are concordant with the first open end of primary side magnetic core and the second open end respectively.Secondary side magnetic core and secondary coil are square framework, and secondary coil is arranged along the outer rim of the first open end of secondary side magnetic core.The outer length of side of the outside length of first open end of secondary coil more than the first open end of primary coil.Asymmetric magnetic coupling arrangement of the present invention is suitable for the efficient wireless transmission of electric energy.
Description
Technical field
The present invention relates to a kind of magnetic coupling arrangements, belong to wireless power transmission field.
Background technology
In recent years, induction type wireless power transmission technology is because with safety, flexible, environmental protection, reliability height and maintenance cost
Low plurality of advantages and more and more paid close attention to by people.Currently, induction type wireless power transmission technology is by widely
Applied to fields such as electric vehicle, household electrical appliance, portable electronic device, medical implant device and aerospaces.
Compared with wired electric energy transmission technology, the sharpest edges of induction type wireless power transmission technology are it with higher
Spatial degrees of freedom.However, the primary side coupling coil when induction type radio energy transmission system is opposite with secondary side coupling coil
When position shifts, the electric energy efficiency of transmission of system is substantially reduced, and even cannot achieve the wireless transmission of electric energy.Therefore,
Electric energy efficiency of transmission is influenced excessive problem by the relative position of primary side coupling coil and secondary side coupling coil and seriously restricts sense
Answer the further development of formula wireless power transmission technology.
Currently, researcher mainly improves induction type by the way of the Optimization Compensation topological structure and coupling coil structure
The anti-excursion capability of radio energy transmission system.For Optimization Compensation topological structure：Researcher proposes the benefit of various new
Repay topological structure, such as SS compensation topologies structure, SP/S compensation topologies structure, S/SP compensation topologies structure, T/S compensation topology knots
Structure, LCC/S compensation topologies structure and S/CLC compensation topology structures etc..Compared with traditional compensation topology structure, these are novel
Compensation topology structure has more excellent anti-offset behavior, however, in the promotion of anti-offset behavior, these novel compensation are opened up
Structure is flutterred to be far from reaching the expection of researcher.For optimizing coupling coil structure：Researcher proposes various new
Coupling coil, such as DD coils, DDQ coils, BP coils, round asymmetric coils, tetrahedral coil and three-dimensional orthogonal iron
Oxysome coil etc..These novel coupling coils improve the anti-offset of induction type radio energy transmission system to a certain extent
Ability, but be also far from reaching the expection of researcher.Meanwhile these novel coupling coils have the shortcomings that it is respective：
DD coils to along coil length direction displacement and angle offset it is excessively sensitive and incompatible with non-polarized coil.DDQ coils and
When BP coils are used as transmitting coil, the inverter of two synchronous operation is needed, this not only adds the volume of system, Er Qiezeng
The cost of system is added.Round asymmetric coils are micro- to the castering action of the anti-excursion capability of induction type radio energy transmission system
Its is micro-.The coefficient of coup of tetrahedral coil and three-dimensional orthogonal ferrite coil is excessive with the fluctuation of coil relative position, and
And it is excessively sensitive to offset both horizontally and vertically.
Invention content
To solve the electric energy efficiency of transmission of existing induction type radio energy transmission system by the opposite of former and deputy side coupling coil
Position influences excessive problem, and the present invention proposes a kind of asymmetric magnetic coupling arrangement based on centered magnetic field.
Asymmetric magnetic coupling arrangement of the present invention based on centered magnetic field includes primary side magnetic core 1, primary coil 2, pair
Side magnetic core 3 and secondary coil 4；
Primary side magnetic core 1 is the hollow rectangle body of both ends open, and the first open end and the second open end of primary side magnetic core 1 are opposite
And it is square；
Primary coil 2 is the hollow rectangle body of both ends open, and the first open end and the second open end of primary coil 2 are opposite
And it is square；
Primary coil 2 closely surrounds on primary side magnetic core 1, the first open end and the second open end of primary coil 2 respectively with
The first open end and the second open end of primary side magnetic core 1 are concordant；
Secondary side magnetic core 3 and secondary coil 4 are square framework, secondary coil 4 along secondary side magnetic core 3 the first open end
Outer rim setting；
The outer length of side of the outside length of first open end of secondary coil 4 more than the first open end of primary coil 2.
As preferably, the inner edge length of the first open end of secondary side magnetic core 3 is more than the first open end of primary coil 2
The outer length of side.
As preferably, primary side magnetic core 1 and secondary side magnetic core 3 are ferrite.
When the asymmetric magnetic coupling arrangement of the present invention based on centered magnetic field is used for the wireless transmission of electric energy, primary side
It first open end of coil and secondary coil face and is arranged in parallel, the spacing of the two is the distance of electric energy wireless transmission.This hair
The outside length of first open end of bright secondary coil is more than the outer length of side of the first open end of primary coil, therefore, the present invention
The magnetic coupling arrangement is unsymmetric structure.For this unsymmetric structure, when primary coil occurs relative to secondary coil
Position offset and without departing from the edge of secondary coil or occur angle offset when, interlinkage flux is substantially unaffected, the coefficient of coup
Variation is smaller, and then the anti-excursion capability of induction type radio energy transmission system is improved greatly.On the other hand, with it is existing
Primary and secondary side be that the magnetic coupling arrangement of planar coil is compared, asymmetric magnetic coupling arrangement of the present invention is because of its magnetic field
Distribution more concentrates and has higher anti-excursion capability.
Description of the drawings
The asymmetric magnetic based on centered magnetic field will hereinafter be carried out to of the present invention based on the embodiments and with reference to the accompanying drawings
Coupled structure is described in more detail, wherein：
Fig. 1 is the structural schematic diagram of the asymmetric magnetic coupling arrangement based on centered magnetic field described in embodiment；
Fig. 2 is the structural schematic diagram for the primary side magnetic core that embodiment refers to, WPFFor primary side magnetic core width, HPFFor primary side magnetic core
Highly, SLPFOFor the length of side outside primary side magnetic core, SLPFIFor the length of side in primary side magnetic core；
Fig. 3 is the structural schematic diagram for the primary coil that embodiment refers to, WPWFor primary coil width, HPWFor primary coil
Highly, SLPWOFor the length of side outside primary coil, SLPWIFor the length of side in primary coil；
Fig. 4 is the structural schematic diagram for the secondary side magnetic core that embodiment refers to, WSFFor secondary side magnetic core width, HSFFor secondary side magnetic core
Highly, SLSFOFor the length of side outside secondary side magnetic core, SLSFIFor the length of side in secondary side magnetic core；
Fig. 5 is the structural schematic diagram for the secondary coil that embodiment refers to, WSWFor secondary coil width, HSWFor secondary coil
Highly, SLSWOFor the length of side outside secondary coil, SLSWIFor the length of side in secondary coil；
Fig. 6 is the two-dimensional magnetic field distribution map of the asymmetric magnetic coupling arrangement based on centered magnetic field described in embodiment；
Fig. 7 is the two-dimensional magnetic field distribution map for the existing planar square loop construction that embodiment refers to；
Fig. 8 is the coefficient of coup, the primary coil/magnetic core height H that embodiment refers toPWith lateral shift distance DHRelational graph；
Fig. 9 is planar rondure coil, planar square coil, DD coils and the asymmetric magnetic coupling arrangement that embodiment refers to
The change curve that coefficient of coup retention coefficient CCRR is deviated with X-axis；
Figure 10 is planar rondure coil, planar square coil, DD coils and the asymmetric magnetic coupling arrangement that embodiment refers to
The change curves that are deviated with Y-axis of coefficient of coup retention coefficient CCRR；
Figure 11 is planar rondure coil, planar square coil, DD coils and the asymmetric magnetic coupling arrangement that embodiment refers to
The change curves that are deviated with Z axis of coefficient of coup retention coefficient CCRR；
Figure 12 is planar rondure coil, planar square coil, DD coils and the asymmetric magnetic coupling arrangement that embodiment refers to
Coefficient of coup retention coefficient CCRR with angle offset change curve；
Figure 13 is the circuit theory for the induction type radio energy transmission system using S/SP compensation topologies that embodiment refers to
Figure；
The output voltage and system effectiveness for the induction type radio energy transmission system that Figure 14 refers to for embodiment are relative to water
Square to displacement change curve；
The output voltage and system effectiveness for the induction type radio energy transmission system that Figure 15 refers to for embodiment are relative to perpendicular
Change curve of the histogram to displacement；
The output voltage and system effectiveness for the induction type radio energy transmission system that Figure 16 refers to for embodiment are relative to angle
Spend the change curve of offset.
Specific implementation mode
The asymmetric magnetic coupling arrangement of the present invention based on centered magnetic field is made furtherly below in conjunction with attached drawing
It is bright.
Embodiment：The present embodiment is explained in detail with reference to Fig. 1 to Figure 16.
The asymmetric magnetic coupling arrangement based on centered magnetic field described in the present embodiment include primary side magnetic core 1, primary coil 2,
Secondary side magnetic core 3 and secondary coil 4；
Primary side magnetic core 1 is the hollow rectangle body of both ends open, and the first open end and the second open end of primary side magnetic core 1 are opposite
And it is square；
Primary coil 2 is the hollow rectangle body of both ends open, and the first open end and the second open end of primary coil 2 are opposite
And it is square；
Primary coil 2 is closely set on primary side magnetic core 1, the first open end of primary coil 2 and the second open end difference
It is concordant with the first open end of primary side magnetic core 1 and the second open end；
Secondary side magnetic core 3 and secondary coil 4 are square framework, secondary coil 4 along secondary side magnetic core 3 the first open end
Outer rim setting；
The outer length of side of the outside length of first open end of secondary coil 4 more than the first open end of primary coil 2.
The inner edge length of first open end of the secondary side magnetic core 3 of the present embodiment is outer more than the first open end of primary coil 2
The length of side.
The primary side magnetic core 1 of the present embodiment and secondary side magnetic core 3 are ferrite.
Fig. 2~Fig. 5 is respectively the structural schematic diagram of primary side magnetic core, primary coil, secondary side magnetic core and secondary coil, this implementation
The outer length of side of first open end of the secondary coil 4 of example is equal to the outer length of side of secondary coil, and the first of the primary coil 2 of the present embodiment
The outer length of side of open end is equal to the outer length of side of primary coil.The interior length of side of first open end of the secondary side magnetic core 3 of the present embodiment is equal to
The interior length of side of the length of side in secondary side magnetic core, the first open end of the primary side magnetic core 1 of the present embodiment is equal to the length of side in primary side magnetic core.
Fig. 6 and Fig. 7 is respectively the two-dimensional magnetic field of the asymmetric magnetic coupling arrangement based on centered magnetic field described in the present embodiment
The two-dimensional magnetic field distribution map of distribution map and existing planar square loop construction.The primary and secondary side of existing planar square loop construction
It is identical as the secondary side structure of the asymmetric magnetic coupling arrangement based on centered magnetic field described in the present embodiment.According to Fig. 6's and Fig. 7
Known to comparison：Compared with existing planar square loop construction, the asymmetric magnetic coupling based on centered magnetic field described in the present embodiment
The Distribution of Magnetic Field of structure is more concentrated.Therefore, the asymmetric magnetic coupling arrangement based on centered magnetic field described in the present embodiment has
Stronger anti-excursion capability.
The parameter of the asymmetric magnetic coupling arrangement based on centered magnetic field described in the present embodiment is optimized below：
The coefficient of coup of induction type radio energy transmission system is with anti-excursion capability with primary coil, secondary coil, original
While magnetic core and it is secondary while magnetic core size variation and change.Therefore, it is necessary to primary coil, secondary coil, primary side magnetic core and
The size of secondary side magnetic core optimizes, and under the premise of ensureing the minimum coefficient of coup, obtains the magnetic with most strong anti-excursion capability
Coupled structure.Parameter due to determining asymmetric magnetic coupling arrangement size is very more, it is impossible to accomplish that whole scan optimizes, it can only
Optimize parameters successively.
Below with the optimization process of an asymmetric magnetic coupling arrangement of example in detail：
By energy transmission range DtraIt is set to 50mm.
It is limited according to the space of application scenario, gives the outer length of side of primary coil, primary coil height, the outer length of side of secondary coil
And the upper limit value of secondary coil and the sum of secondary side magnetic core height, particular content are as shown in table 1：
The three-dimensional dimension of 1 asymmetric magnetic coupling arrangement of table limits
Table 2 lists parameter and its value range to be optimized.In asymmetric magnetic coupling arrangement, primary side magnetic core height is total
It is equal to primary coil height.In order to describe conveniently, the height of the two is newly defined as H herep.It can according to common knowledge
Know：The outer length of side of secondary coil and the outer length of side of secondary side magnetic core are bigger, and the coefficient of coup is higher.Therefore, by the length of side outside secondary coil and pair
The magnetic core outer length of side in side is disposed as 300mm.
2 parameter to be optimized of table and its value range
With primary coil/magnetic core height HPFor, illustrate asymmetric magnetic coupling arrangement parameter optimization method.In optimization HPWhen,
Other parameters remain unchanged, as shown in table 3.Fig. 8 gives HPOptimum results, wherein DHIndicate lateral shift distance, it is black in figure
Color arrow is directed toward the axis of ordinates corresponding to homologous thread.
Other parameters value when 3 primary coils of table/magnetic core height optimization
Coefficient of coup retention coefficient CCRR is defined as follows：
In formula, kmisAnd kaliThe coefficient of coup when coefficient of coup and face after offset is indicated respectively.CCRR closer to 1,
Show that coefficient of coup variation is smaller, which is used for characterizing the power of the anti-excursion capability of magnetic coupling arrangement.
As can be seen from FIG. 8：With primary coil/magnetic core height HPIncrease, the coefficient of coup becomes larger, but the present embodiment institute
The anti-excursion capability for the asymmetric magnetic coupling arrangement based on centered magnetic field stated is barely affected.With primary coil/magnetic core
Height HPIncrease, the coefficient of coup rise slope taper into.In view of the limitation of the factors such as cost and volume, in this optimization
In, HpIt is more suitable to be set to 100mm.Work as Hp=100mm, DHWhen=100mm, CCRR is equal to 0.856；Work as DHIncrease to 150mm
When, CCRR is down to 0.393.In this case, if not using additional control circuit, induction type radio energy transmission system
It is difficult to maintain rated output power.Therefore, in this suboptimization, lateral shift distance DHIt is more suitable to be set to 100mm, that is, is equal to
The one third of the outer length of side of secondary coil.
Optimize the other parameters in table 2 by identical method, and obtain the optimum size of asymmetric magnetic coupling arrangement, such as
Shown in table 4：
The optimum size of 4 asymmetric magnetic coupling arrangement of table
The advantageous effect of the asymmetric magnetic coupling arrangement based on centered magnetic field described in the present embodiment is verified below：
For induction type radio energy transmission system, planar rondure coil, planar square coil and DD coils are because with knot
The advantages that structure is simple, the coefficient of coup is high and anti-excursion capability is strong is widely used.
Table 5 gives the specific size parameter of these four loop constructions.
The dimensional parameters of 5 planar rondure coil of table, planar square coil, DD coils and asymmetric magnetic coupling arrangement
Size Expressing is following format：Outer diameter/internal diameter × height.
Although the coefficient of coup of asymmetric magnetic coupling arrangement is less than other three kinds of coils, in order to it is excellent it is anti-partially
Shifting ability, the coefficient of coup are relatively low inevitable.For induction type radio energy transmission system, the coefficient of coup transmits electric energy
The influence of efficiency is limited, if select suitable litz wire coiling coupling coil, then use suitable collocation structure, the coefficient of coup compared with
Low magnetic coupling arrangement can also obtain higher electric energy efficiency of transmission.
Fig. 9 is that planar rondure coil, planar square coil, DD coils and the coefficient of coup of asymmetric magnetic coupling arrangement are kept
The change curve that coefficient CCRR is deviated with X-axis.
Figure 10 is that planar rondure coil, planar square coil, DD coils and the coefficient of coup of asymmetric magnetic coupling arrangement are protected
Hold the change curve that coefficient CCRR is deviated with Y-axis.
Figure 11 is that planar rondure coil, planar square coil, DD coils and the coefficient of coup of asymmetric magnetic coupling arrangement are protected
Hold the change curve that coefficient CCRR is deviated with Z axis.
Figure 12 is that planar rondure coil, planar square coil, DD coils and the coefficient of coup of asymmetric magnetic coupling arrangement are protected
Hold change curves of the coefficient CCRR with angle offset.
Fig. 9~Figure 12 compares the anti-excursion capability of four kinds of different magnetic coupling arrangements.
As can be seen from FIG. 9：When being 0 to 80mm along X-direction offset, the anti-excursion capability of asymmetric magnetic coupling arrangement is excellent
In other three kinds of magnetic coupling arrangements.When being 90 to 100mm along X-direction offset, the anti-offset energy of asymmetric magnetic coupling arrangement
Power is slightly inferior to DD coils.In general, asymmetric magnetic coupling arrangement is very nearly the same with DD coils in anti-X-axis excursion capability, but
It is to be substantially better than planar rondure coil and plane square coil.When being 100mm along X-direction offset, asymmetric magnetic coupling knot
The coefficient of coup retention coefficient CCRR of structure exceeds planar square coil and planar rondure coil 37.5% and 48.1% respectively.
As can be seen from FIG. 10：In addition to DD coils, other three kinds of magnetic coupling arrangements are all about 90 ° of rotational symmetry, and therefore, this three
The curve of kind coupled structure is identical with Fig. 9.For DD coils, anti-Y-axis excursion capability is far weaker than anti-X-axis excursion capability.
When being 100mm along Y direction offset distance, the coefficient of coup retention coefficient CCRR highests of asymmetric magnetic coupling arrangement show
Its anti-Y-axis excursion capability is most strong.The coefficient of coup retention coefficient CCRR of asymmetric magnetic coupling arrangement is more than planar square line respectively
Circle, planar rondure coil and DD coils 37.5%, 48.1% and 712.1%.
Asymmetric magnetic coupling arrangement is in addition to the excellent flat excursion capability of water resistant, also having good anti-offset of vertical energy
Power.As can be seen from FIG. 11：Compared with other three kinds of magnetic coupling arrangements, when being 30mm along Z-direction offset, i.e. energy transmission distance
From 3/5ths when, asymmetric magnetic coupling arrangement, planar square coil, planar rondure coil and DD coils the coefficient of coup protect
It is respectively 0.749,0.6641,0.6549 and 0.6151 to hold coefficient CCRR.It can thus be appreciated that：Asymmetric magnetic coupling arrangement it is anti-vertical
Excursion capability is most strong, and the anti-offset of vertical ability of DD coils is most weak.
The coefficient of coup retention coefficient CCRR of four kinds of magnetic coupling arrangements and the relationship of angle offset are as shown in figure 12.Flat circle
Shape coil is symmetrical about Arbitrary Rotation, therefore its coefficient of coup retention coefficient CCRR is remained unchanged, and has best anti-angle
Spend excursion capability.The coefficient of coup retention coefficient CCRR of asymmetric magnetic coupling arrangement is equally highly stable, is 45 ° in rotation angle
When amplitude of variation it is maximum, rise 2.1%.In contrast, when angle offset is 45 °, the coefficient of coup of planar square coil
Retention coefficient CCRR reduces 9.7%, is 4.6 times of asymmetric magnetic coupling arrangement.And when rotation angle is 90 °, DD coils
Coefficient of coup retention coefficient CCRR be 0.
In conclusion the asymmetric magnetic coupling arrangement based on centered magnetic field described in the present embodiment has optimal anti-offset
Ability.(the horizontal-shift in given deviation range：The one third of the outer length of side of secondary coil, offset of vertical：Energy transmission away from
From 3/5ths, angle offset：360 °), the coupling of the asymmetric magnetic coupling arrangement based on centered magnetic field described in the present embodiment
The variation range of collaboration number retention coefficient CCRR is 73.8% to 102.1%.
The asymmetric magnetic coupling arrangement based on centered magnetic field described in the present embodiment coordinates compensation topology appropriate that can will feel
Answer the output voltage undulated control of formula radio energy transmission system within the 5% of rated value.
In order to verify the anti-excursion capability of the asymmetric magnetic coupling arrangement based on centered magnetic field described in the present embodiment, use
S/SP compensation topologies come the output voltage of actual test induction type radio energy transmission system with all kinds of offsets (X-axis, Y-axis, Z axis,
Angle) variation relation.Using circuit diagram such as Figure 13 institutes of the induction type radio energy transmission system of S/SP compensation topologies
Show.System detail parameters are shown in Table 6.kmaxMaximum coefficient of coup when face, k are enclosed for former and deputy sidelineminFor caused by offset most
The small coefficient of coup.
The detail parameters of 6 induction type radio energy transmission system of table
Figure 14~Figure 16 be followed successively by induction type radio energy transmission system output voltage and system effectiveness relative to level
The change curve of direction displacement, vertical direction displacement and angle offset.
VFR indicates output voltage stability bandwidth, defines as shown in formula (2).Wherein, UO-maxAnd UO-minRespectively represent induction
The maximum output voltage and minimum output voltage of formula radio energy transmission system.
According to Figure 14~Figure 16：Output voltage stability bandwidth is up to 2.83%.The voltage fluctuation of this small degree
All it is acceptable for most of application scenarios.When without offset, the energy of induction type radio energy transmission system
Efficiency of transmission is up to 94.1%.When horizontal-shift is 10cm, the energy transmission efficiency of induction type radio energy transmission system is most
It is low, but still have 91.9%.This shows that the efficiency of induction type radio energy transmission system remains to protect even if there is larger offset
It holds in higher level.
In conclusion the asymmetric magnetic coupling arrangement based on centered magnetic field described in the present embodiment has outstanding anti-offset
Ability.In given deviation range, the coefficient of coup retention coefficient CCRR of asymmetric magnetic coupling arrangement not less than it is preset most
Low value.In practical applications, even if there is larger offset, the output voltage and system effectiveness of induction type radio energy transmission system
Also it remains unchanged substantially.The asymmetric magnetic coupling arrangement based on centered magnetic field described in the present embodiment is expected to the induction type in future
It is widely applied in radio energy transmission system.
Although describing the present invention herein with reference to specific embodiment, it should be understood that, these realities
It is the example of principles and applications to apply example only.It should therefore be understood that can be permitted exemplary embodiment
More modifications, and can be designed that other arrangements, spirit without departing from the present invention as defined in the appended claims and
Range.It should be understood that can be by combining different appurtenances different from mode described in original claim
It is required that and feature described herein.It will also be appreciated that the feature in conjunction with described in separate embodiments can be used at it
In his embodiment.
Claims (3)
1. the asymmetric magnetic coupling arrangement based on centered magnetic field, which is characterized in that the asymmetric magnetic coupling arrangement includes primary side
Magnetic core (1), primary coil (2), secondary side magnetic core (3) and secondary coil (4)；
Primary side magnetic core (1) is the hollow rectangle body of both ends open, and the first open end and the second open end of primary side magnetic core (1) are opposite
And it is square；
Primary coil (2) is the hollow rectangle body of both ends open, and the first open end and the second open end of primary coil (2) are opposite
And it is square；
Primary coil (2) is closely set on primary side magnetic core (1), the first open end and the second open end point of primary coil (2)
It is not concordant with the first open end of primary side magnetic core (1) and the second open end；
Secondary side magnetic core (3) and secondary coil (4) are square framework, and secondary coil (4) is opened along the first of secondary side magnetic core (3)
The outer rim setting at mouth end；
The outer length of side of the outside length of first open end of secondary coil (4) more than the first open end of primary coil (2).
2. the asymmetric magnetic coupling arrangement based on centered magnetic field as described in claim 1, which is characterized in that secondary side magnetic core (3)
The first open end inner edge length more than primary coil (2) the first open end the outer length of side.
3. the asymmetric magnetic coupling arrangement based on centered magnetic field as described in claim 1, which is characterized in that primary side magnetic core (1)
It is ferrite with secondary side magnetic core (3).
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|---|---|---|---|---|
| US20100052811A1 (en) * | 2008-08-20 | 2010-03-04 | Smith Joshua R | Flat, asymmetric, and e-field confined wireless power transfer apparatus and method thereof |
| CN104347257A (en) * | 2014-10-24 | 2015-02-11 | 天津榕丰科技有限公司 | Hollow magnetic core device for wireless charging and wireless power supply |
| CN104576003A (en) * | 2015-01-30 | 2015-04-29 | 哈尔滨工业大学 | Transmission coil for magnetically-coupled resonant wireless power transmission system |
| CN104779686A (en) * | 2015-04-03 | 2015-07-15 | 天津大学 | Method for improving efficiency of ICPT (inductively coupled power transfer)-based non-contact charging for electric vehicle |
| JP2015139348A (en) * | 2014-01-24 | 2015-07-30 | ホシデン株式会社 | Secondary coil module |
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2018
- 2018-01-16 CN CN201810043000.8A patent/CN108281258B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100052811A1 (en) * | 2008-08-20 | 2010-03-04 | Smith Joshua R | Flat, asymmetric, and e-field confined wireless power transfer apparatus and method thereof |
| JP2015139348A (en) * | 2014-01-24 | 2015-07-30 | ホシデン株式会社 | Secondary coil module |
| CN104347257A (en) * | 2014-10-24 | 2015-02-11 | 天津榕丰科技有限公司 | Hollow magnetic core device for wireless charging and wireless power supply |
| CN104576003A (en) * | 2015-01-30 | 2015-04-29 | 哈尔滨工业大学 | Transmission coil for magnetically-coupled resonant wireless power transmission system |
| CN104779686A (en) * | 2015-04-03 | 2015-07-15 | 天津大学 | Method for improving efficiency of ICPT (inductively coupled power transfer)-based non-contact charging for electric vehicle |
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