CN105958659B - A kind of Asymmetric Electric magnetic coupler suitable for wireless charging device - Google Patents
A kind of Asymmetric Electric magnetic coupler suitable for wireless charging device Download PDFInfo
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- CN105958659B CN105958659B CN201610356460.7A CN201610356460A CN105958659B CN 105958659 B CN105958659 B CN 105958659B CN 201610356460 A CN201610356460 A CN 201610356460A CN 105958659 B CN105958659 B CN 105958659B
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- 239000004020 conductor Substances 0.000 claims description 31
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- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 abstract description 30
- 239000004411 aluminium Substances 0.000 abstract description 19
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Classifications
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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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- H02J7/025—
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
It is staggered relatively between the receiving unit and emitting module in the Asymmetric Electric magnetic coupler the invention discloses a kind of Asymmetric Electric magnetic coupler suitable for wireless charging device, and spacing be present.Between receiving unit and emitting module in addition to the material difference of pedestal, remaining structure is identical.Magnetic film, magnetic stripe location-plate and coil limiting plate are sequentially placed with the inner chamber of pedestal, array magnetic stripe is placed in the rectangular channel of magnetic stripe location-plate, coil is laid out in the groove of coil limiting plate, then cover plate is covered, top nut is connected after passing through the through hole on cover plate, the through hole in base projection by screw.The Asymmetric Electric magnetic coupler can effectively reduce the influence that aluminium sheet pedestal is vortexed in conventional coupler, improve the coefficient of coup and quality factor, the bar shaped strip arrays disposing way of design can increase the lateral shift allowance of Asymmetric Electric magnetic coupler, be more suitable for the wireless power transmission of electric automobile.
Description
Technical field
The present invention relates to a kind of electromagnetic coupler, more particularly, refers to a kind of suitable for the non-right of wireless charging device
Claim electromagnetic coupler.
Background technology
The advantages that electric automobile (Electric Vehicles, EV) is by green, zero-emission, obtain quickly
Develop and have good application prospect.At present on the market to charging electric vehicle based on wired, but this charging modes are deposited
In many shortcomings, for example plug-in easily produces spark, easily produces abrasion, be not safe enough, not easy care etc..Radio energy passes
The appearance of transferring technology causes the power supply of electric automobile to have new selection, can be efficiently against above-mentioned using wireless power transmission
Shortcoming.Therefore the wireless power transmission technology of electric automobile has broad application prospects.
China Machine Press, August the 1st edition in 2014,《Wireless power transmission technology and its application》, Yang Qingxin, Zhang Xian,
Li Yang, the 158-159 pages, " analysis of 8.3.2 electric automobile fixed-point types wireless charging system " is described, wherein, Fig. 8-51 disclosures
" the system the general frame of wireless charging device ", transmitting winding inductance is described in dotted line frame in figure, receives winding inductance shape
Into electromagnetic coupler.Fig. 8-51 figure number is referred to as Fig. 8 in this application for convenience of explanation.
IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS,
VOL.3,NO.1,MARCH 2015；Wireless Power Transfer for Electric Vehicle
Applications；Fig. 1 describes a kind of typical wireless electric automobile charging system actual.
Transmitting and mechanism for picking as energy, electromagnetic coupler design to the transimission power of wireless charging device system and
Efficiency has vital influence.In the research of wireless charging early stage, used electromagnetic coupler is one and carried
The transformer of air gap original secondary separation, usual this coupler transfer are closer to the distance.In order to lift transmission range, researchers
New electromagnetic coupler is devised, these electromagnetic couplers can substantially be divided into two classes according to the distribution of magnetic flux：Bilateral coupler
With unilateral coupler.As its name suggests, bilateral coupler be magnetic flux distribution inside and outside coupler, car bottom plate produce it is very big
Vortex, energy loss is produced, reduce efficiency, therefore needed in practical application using electromagnetic shielding；And unilateral coupler is due to master
Magnetic flux is distributed mainly on inside coupler, can greatly reduce leakage field, therefore currently used coupler is mostly unilateral coupler.
According to the difference of structure, unilateral coupler can be divided into unipolarity coupler and bipolarity coupler again, wherein singly
Polar couplings device is mainly circular charging panel, and bipolarity coupler includes：DD charging panels, DDQ charging panels, new DD charging panels.
Although bipolarity coupler will be better than unipolarity coupler in transmission range and skew allowance, bipolarity coupler is each
Charging panel has two or more coil, it is necessary to multigroup compensation network, and magnetic field can influence each other caused by two coil currents, design
It is complicated with control.Unipolarity coupler is simple in construction due to its, it is only necessary to one group of compensation network, as long as can rational in infrastructure expires
Sufficient design objective, therefore the present invention carries out Optimal Structure Designing for unipolarity coupler.
The content of the invention
Small for offseting allowance existing for traditional monopole electromagnetic coupler, the problems such as stiffness of coupling is low, the present invention designs
A kind of Novel asymmetric electromagnetic coupler suitable for wireless charging device, the coupler can effectively overcome traditional electromagnetism coupling
In clutch in aluminium sheet caused vortex influence, increase the coefficient of coup and quality factor, the bar shaped magnetic stripe disposing way energy of design
Enough increase the lateral shift allowance of system, be more suitable for the wireless of electric car (electric automobile, electric bicycle, Moped Scooter)
Electric energy transmits.
A kind of Asymmetric Electric magnetic coupler suitable for wireless charging device that the present invention designs, it includes receiving unit
And emitting module (2) two-part structure (1)；
Receiving unit (1) and emitting module (2) are staggered relatively, and a determining deviation be present；
Receiving unit (1) includes A cover plates (1A), A coils limiting plate (1B), A coils (1B1), A arrays magnetic stripe (1C), A magnetic
Bar location-plate (1D), A magnetic films (1E), A magnetic conductors (1F) and A pedestals (1G)；
Emitting module (2) includes B cover plates (2A), B coils limiting plate (2B), B coils (2B1), B arrays magnetic stripe (2C), B magnetic
Bar location-plate (2D), B magnetic films (2E), B magnetic conductors (2F) and B pedestals (2G)；
Wherein, A cover plates (1A) are identical with the structure of B cover plates (2A)；
Wherein, A coils limiting plate (1B) is identical with the structure of B coils limiting plate (2B)；
Wherein, A coils (1B1) are identical with the structure of B coils (2B1)；
Wherein, A arrays magnetic stripe (1C) is identical with the structure of B arrays magnetic stripe (2C)；
Wherein, A magnetic stripes location-plate (1D) is identical with the structure of B magnetic stripes location-plate (2D)；
Wherein, A magnetic films (1F) are identical with the structure of B magnetic films (2F)；
Wherein, A magnetic conductors (1F) are identical with the structure of B magnetic conductors (2F)；
A cover plates (1A), which are provided with, to be used for the fixed AA through holes (1A1) of A cover plates (1A) and A pedestals (1G)；
The B panels of A coils limiting plate (1B) are provided with A raised (1B4) and A grooves (1B5), are put in the A grooves (1B5)
It is equipped with A coils (1B1).Rectangular configuration plane of the A coils (1B1) along A coils limiting plate (1B) is closely wound layout；
A magnetic stripes location-plate (1D) is provided with A rectangular channels (1D2), and the A rectangular channels (1D2) are used to place A array magnetic stripes
(1C)；
A pedestals (1G) are provided with A base projections (1G1), and A base projections (1G1) contact with A magnetic conductors (1F), A pedestals
A magnetic films (1E), A magnetic stripes location-plate (1D) and A coils limiting plate (1B), A magnetic stripe location-plates are sequentially placed with the inner chamber of (1G)
A arrays magnetic stripe (1C) is placed in the rectangular channel of (1D), coil has been laid out in the groove of A coils limiting plate (1B), has then covered A
Cover plate (1A), connected after passing through the AB through holes (1A2) on A cover plates (1A), the through hole in A base projections (1G1) by screw
Nut.
B cover plates (2A), which are provided with, to be used for the fixed BA through holes (2A1) of B cover plates (2A) and B pedestals (2G)；
The B panels of B coils limiting plate (2B) are provided with B raised (2B4) and B grooves, and B coils are placed with the B grooves
(2B1), rectangular configuration plane of the B coils (2B1) along B coils limiting plate (2B) are closely wound layout；
B magnetic stripes location-plate (2D) is provided with B rectangular channels (2D2), and the B rectangular channels (2D2) are used to place B array magnetic stripes
(2C)；
B pedestals (2G) are provided with B base projections (2G1), and B base projections (2G1) contact with B magnetic conductors (2F), B pedestals
B magnetic films (2E), B magnetic stripes location-plate (2D) and B coils limiting plate (2B), B magnetic stripes is sequentially placed with the inner chamber (2G3) of (2G) to determine
B arrays magnetic stripe (2C) is placed in the rectangular channel of position plate (2D), has been laid out coil in the groove of B coils limiting plate (2B), then
B cover plates (2A) are covered, are connected after passing through the BA through holes (2A1) on B cover plates (2A), the through hole in B base projections (2G1) by screw
Connect nut.
The present invention design suitable for wireless charging device Asymmetric Electric magnetic coupler the advantages of be：
1. the pedestal of unlike material can increase the coupling for the wireless power transmission Asymmetric Electric magnetic coupler that the present invention designs
Close intensity.
2. setting magnetic film (1E, 2E) between pedestal (1G, 2G) and magnetic stripe location-plate (1D, 2D), reduce in wireless charging
Leakage field in electric process.
3. playing guiding magnetic circuit in the outer side apparatus magnetic conductor (1F, 2F) of coil (1B1,2B1), add wireless
Electric energy transmits the stiffness of coupling of Asymmetric Electric magnetic coupler.
4. using the array arrangement magnetic stripe along Y-axis, be advantageous to increase skew allowance.
Brief description of the drawings
Fig. 1 is a kind of external structure for Asymmetric Electric magnetic coupler that the present invention designs.
Figure 1A is a kind of front view for Asymmetric Electric magnetic coupler that the present invention designs.
Figure 1B is a kind of A-A sectional views for Asymmetric Electric magnetic coupler that the present invention designs.
Fig. 1 C are a kind of receiving unit sectional views for Asymmetric Electric magnetic coupler that the present invention designs.
Fig. 1 D are a kind of emitting module sectional views for Asymmetric Electric magnetic coupler that the present invention designs.
Fig. 2 is the exploded view for the receiving unit that the present invention designs.
Fig. 2A is the structure chart of receiving unit coil and limiting plate of the present invention.
Fig. 2 B are the enlarged drawings of part in Fig. 2A.
Fig. 2 C are the assembly structure figures of pedestal in receiving unit of the present invention, magnetic film, magnetic stripe location-plate and magnetic conductor.
Fig. 3 is the exploded view for the emitting module that the present invention designs.
Fig. 3 A are the assembly structure figures of pedestal in emitting module of the present invention, magnetic film, magnetic stripe location-plate and magnetic conductor.
Fig. 4 is the curve map of emitting module and receiving unit of the present invention skew in the Y direction and the coefficient of coup.
Fig. 5 be the present invention loading magnetic film before and after skew and the coefficient of coup curve map.
Fig. 6 A be the present invention loading magnetic conductor before and after skew and the coefficient of coup curve map.
Fig. 6 B are using the magnetic induction intensity schematic diagram of magnetic conductor and aluminium sheet pedestal in coupler.
Fig. 7 A are skew and the coefficient of coup that pedestal is respectively aluminium sheet and non-metallic insulation plate in emitting module of the present invention
Curve map.
Fig. 7 B are the close change curves of magnetic that pedestal is respectively aluminium sheet and acrylic board in emitting module of the present invention.
Fig. 8 is the system the general frame of conventional wireless charging device.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
In order to improve existing for traditional monopole electromagnetic coupler offset allowance it is small, the problems such as stiffness of coupling is low, especially
The problem of to transimission power existing for the electromagnetic coupler that is used in wireless charging device system and low efficiency, referring to Fig. 1, figure
1B, Fig. 1 C, Fig. 1 D, shown in Fig. 2, Fig. 3, the present invention devises a kind of Asymmetric Electric magnetic coupling suitable for wireless charging device
Device.The Asymmetric Electric magnetic coupler includes receiving unit 1 and the two-part structure of emitting module 2.Wherein：Receiving unit 1 and hair
Penetrate between component 2 and be placed in parallel by space D.The spacingb1BFor length of the A coil limiting plate 1B along X-direction
Degree, because A coil limiting plate 1B and B coil limiting plates 2B structure are identicals, therefore spacingb2BFor B lines
Enclose length of the limiting plate 2B along X-direction.In order to construct the rational Asymmetric Electric magnetic coupler for being applied to wireless charging device
Structure, using length of the coil limiting plate (1B, 2B) along X-direction as reference dimension.
Receiving unit 1
Referring to shown in Fig. 1, Figure 1B, Fig. 1 C, Fig. 2, receiving unit 1 is by A cover plate 1A, A coil limiting plate 1B, A coils 1B1, A
Array magnetic stripe 1C, A magnetic stripe location-plate 1D, A magnetic film 1E, A magnetic conductor 1F and A pedestal 1G is formed.
A cover plates 1A leads to provided with AA necks 1A2, AB neck 1A3 and AA for A cover plates 1A and A pedestals 1G to be fixed
Hole 1A1；AA necks 1A2 is used for spacing and passed through for A loop A joints 1B2；AB necks 1A3 is used for spacing and supplies A coil B joints
1B3 is passed through.A cover plates 1A is fixed on A pedestals 1G.
The another side that A coil limiting plates 1B one side is designated as A panels 1B6, A coil limiting plate 1B is designated as B panels；The B
Panel is provided with A projection 1B4 and A groove 1B5 (as shown in Figure 2 B), and A coils 1B1 is placed with the A grooves 1B5.A coils limit
Position plate 1B A panels 1B6 and A magnetic stripe location-plate 1D B panels 1D3 is contacted.Rectangle structures of the A coils 1B1 along A coil limiting plates 1B
Shape winding layout is in A coil limiting plates 1B A grooves 1B5.In the present invention, length of the A coils limiting plate 1B along Y direction
It is designated as a1B, A coil limiting plate 1B are designated as b along the length of X-direction1B, and
The interval of adjacent magnetic stripe in A array magnetic stripes 1C is designated as d1C, magnetic stripe is designated as a along the length of Y direction1C, magnetic stripe edge
The length of X-direction is designated as b1C, the thickness of magnetic stripe is designated as h1C, andb1C=b1B- (15~25) mm,
The another side that A magnetic stripe location-plates 1D one side is designated as A panels 1D1, A magnetic stripe location-plate 1D is designated as B panels 1D3；A magnetic
Bar location-plate 1D is provided with A rectangular channels 1D2, the A rectangular channels 1D2 for placing A array magnetic stripes 1C.
The another side that A magnetic films 1E one side is designated as A panels 1E1, A magnetic film 1E is designated as B panels.A magnetic films 1E A panels 1E1
Contacted with A pedestals 1G inner bottom surface plate.A magnetic films 1E B panels contact with A magnetic stripe location-plates 1D B panels 1D3.
Referring to shown in Figure 1B, Fig. 1 C, Fig. 2 C, it is in A that A pedestals 1G, which is provided with the middle part of A base projections 1G1, A pedestal 1G,
Chamber, A magnetic film 1E, A magnetic stripe location-plates 1D is sequentially placed with A pedestals 1G A inner chambers and (is put in A magnetic stripe location-plates 1D rectangular channel
Put A arrays magnetic stripe 1C) and A coil limiting plates 1B (being laid out coil in A coil limiting plates 1B groove), then cover A lids
Plate 1A, top nut is connected after the through hole on AA through hole 1A1, A base projections 1G1 on A cover plates 1A is passed through by screw.A pedestals
1G is metal material, such as metallic aluminium, aluminium alloy, stainless steel.
In the present invention, A coils 1B1 uses a diameter of 2~4mm Litz line coilings, and coil is closely wound from inside to outside
15~40 circles.
Emitting module 2
Referring to shown in Fig. 1, Figure 1B, Fig. 1 D, Fig. 3, emitting module 2 is by B cover plate 2A, B coil limiting plate 2B, B coils 2B1, B
Array magnetic stripe 2C, B magnetic stripe location-plate 2D, B magnetic film 2E, B magnetic conductor 2F and B pedestal 2G is formed.
B cover plates 2A is provided with BA necks, BB necks (structure that can use for reference the A cover plates 1A shown in Fig. 2), for by B cover plates
The BA through holes 2A1 that 2A and B pedestals 2G is fixed；BA necks are used for spacing and passed through for B loop A joints 2B2；BB necks are used for spacing
Passed through with for B coil B joints 2B3.B cover plates 2A is fixed on B pedestals 2G.
B coil limiting plates 2B one side is designated as A panels, and B coil limiting plates 2B another side is designated as B panels；The B panels
B projection 2B4 and B grooves are provided with, B coils 2B1 is placed with the B grooves.B coil limiting plates 2B A panels are determined with B magnetic stripes
Position plate 2D B panels 2D3 contacts.Rectangular configuration winding layouts of the B coils 2B1 along B coil limiting plates 2B is in B coil limiting plates 2B
B grooves in.In the present invention, B coils limiting plate 2B is designated as a along the length of Y direction2B, B coil limiting plate 2B are along X-axis side
To length be designated as b2B, andIn the present invention, A coils limiting plate 1B and B coil limiting plates 2B structure
It is identical, i.e. a1B=a2B, b1B=b2B。
The interval of adjacent magnetic stripe in B array magnetic stripes 2C is designated as d2C, magnetic stripe is designated as a along the length of Y direction2C, magnetic stripe edge
The length of X-direction is designated as b2C, the thickness of magnetic stripe is designated as h2C, andb2C=b2B- (15~25) mm,In the present invention, B arrays magnetic stripe 2C is identical with A array magnetic stripes 1C structure,
That is d1C=d2C, a1C=a2C, b1C=b2C, h1C=h2C。
B magnetic stripe location-plates 2D one side is designated as A panels, and B magnetic stripe location-plates 2D another side is designated as B panels 2D3；B magnetic stripes
Location-plate 2D is provided with B rectangular channels 2D2, the B rectangular channels 2D2 for placing B array magnetic stripes 2C.
B magnetic films 2E one side is designated as A panels, and B magnetic films 2E another side is designated as B panels 2E2.B magnetic films 2E A panels and B
Pedestal 2G bottom panel 2G2 contacts.B magnetic films 2E B panels 2E2 and B magnetic stripe location-plate 2D B panels 2D3 is contacted.
Referring to shown in Figure 1B, Fig. 1 D, Fig. 3 A, it is B inner chambers that B pedestals 2G, which is provided with the middle part of B base projections 2G1, B pedestal 2G,
B magnetic film 2E, B magnetic stripe location-plate 2D (B magnetic stripe location-plates 2D rectangular channels are sequentially placed with 2G3, B pedestal 2G B inner chambers 2G3
In place B arrays magnetic stripe 2C) and B coil limiting plates 2B (being laid out coil in B coil limiting plates 2B groove), then cover
B cover plate 2A, top nut is connected after the through hole on BA through hole 2A1, B base projections 2G1 on B cover plates 2A is passed through by screw.B bases
Seat 2G is non-metal insulating material, such as acrylic board, wood based panel, epoxy resin board, PVC board, glass epoxy.
Wherein, A cover plates (1A) are identical with the structure of B cover plates (2A).
Wherein, A coils limiting plate (1B) is identical with the structure of B coils limiting plate (2B).
Wherein, A coils (1B1) are identical with the structure of B coils (2B1).
Wherein, A arrays magnetic stripe (1C) is identical with the structure of B arrays magnetic stripe (2C).
Wherein, A magnetic stripes location-plate (1D) is identical with the structure of B magnetic stripes location-plate (2D).
Wherein, A magnetic films (1F) are identical with the structure of B magnetic films (2F).
Wherein, A magnetic conductors (1F) are identical with the structure of B magnetic conductors (2F).
In the present invention, receiving unit 1 can reduce electric automobile chassis to coil using the A pedestal 1G of metal material
The influence of parameter, and reduce the vortex in automobile chassis, reduce heating.
In the present invention, magnetic film 1E is set between magnetic stripe location-plate 1D and pedestal 1A, can reduce in pedestal 1A and be vortexed instead
Penetrate influence of the magnetic field to coil 1B1.
In the present invention, magnetic stripe along the y-axis direction place by array, can increase the skew allowance of receiving unit 1 in the y-direction.
In the present invention, magnetic conductor (1F, 2F) is placed in the outside of coil (1B1,2B1), plays magnetic conductor (1F, 2F)
The effect of magnetic circuit is guided, adds the stiffness of coupling of wireless power transmission Asymmetric Electric magnetic coupler.
In the present invention, can from the pedestal (the A pedestal 1G of aluminium sheet, the B pedestal 2G of non-metallic insulation plate) of different materials
To increase the stiffness of coupling between receiving unit 1 and emitting module 2.
The performance evaluation of the Asymmetric Electric magnetic coupler of the present invention：
In the present invention, wireless power transmission Asymmetric Electric magnetic coupler is designed to rectangular configuration, with circular coupler phase
Than in the case where coil limiting plate area equivalent and magnetic material volume are equivalent, magnetic stripe has more along Y direction array layout
Big skew allowance.
A kind of wireless power transmission Asymmetric Electric magnetic coupler that the present invention designs, between receiving unit 1 and emitting module 2
Space D=170mm, rectangle Asymmetric Electric magnetic coupler devises three kinds of configurations：
A molded dimensions are arranged to (b1B) X=443mm and (a1B) Y=443mm.
Type B is sized to (b1B) X=600mm and (a1B) Y=327mm.
C-type is sized to (b1B) X=327mm and (a1B) Y=600mm.
Rectangle Asymmetric Electric magnetic coupler size is to be respectively along the length of Y direction with coil limiting plate (1B, 2B)
443mm, 327mm, 600mm, long 443mm, 600mm, the 327mm of coil limiting plate (1B, 2B) along X-direction.Asymmetric electromagnetism
The coordinate of coupler is shown in Figure 1.
In the present invention, in the case that area equivalent and magnetic material volume are equivalent, magnetic stripe is perpendicular to offset direction (i.e. Y
Axle) place rectangle Asymmetric Electric magnetic coupler there is bigger skew allowance.Skew shown in Figure 4 for receiving unit 1
Direction is vertical with magnetic stripe placement direction, it can be seen that when offset is less than 200mm, the coupling of A type Asymmetric Electrics magnetic coupler is strong
Degree highest, the coefficient of coup 0.123, although c-type Asymmetric Electric magnetic coupler stiffness of coupling when not offseting is weaker, coupled systemes
Number is 0.095, but its coefficient of coup declines slowly, i.e., with larger skew allowance with the increase of offset.In electric automobile
Need the skew allowance of larger Y-axis in wireless charging, and the lifting of stiffness of coupling can be by increasing the volume of magnetic material
To realize.
In the present invention, the influence being vortexed in aluminium sheet pedestal 1A can be shielded by adding magnetic film 1E.Band shown in Figure 5
Magnetic film and without the coefficient of coup of magnetic film coupler and the relation of offset.As can be seen that there is the coefficient of coup after addition magnetic film
Significant increase, the coefficient of coup 0.145, but its skew allowance also reduces many simultaneously.Comparatively speaking magnetic stripe is perpendicular to skew
The electromagnetic coupler skew allowance that direction is placed still slightly is better than the coupler in magnetic stripe parallel offset direction.
In the present invention, increase magnetic conductor 1F can shield vortes interference in aluminium sheet pedestal 1A and play the work for guiding magnetic circuit
With.The coefficient of coup for showing addition magnetic conductor referring to Fig. 6 A and being not added with the coupler of magnetic conductor changes comparison diagram with offset.
As can be seen that the coefficient of coup for being not added with magnetic conductor is 0.146, the coefficient of coup is 0.166 after adding magnetic conductor, coefficient of coup lifting
About 13%, skew allowance is basically unchanged.Fig. 6 B show in electromagnetic coupler the guiding magnetic circuit using magnetic conductor and aluminium base
Schematic diagram, it can be seen that magnetic field is substantially between reception and transmitting, and aluminium sheet pedestal serves good shielding action.
In the present invention, the pedestal of emitting module 2 does not use aluminium sheet, and change into non-metallic insulation plate can increase transmitting with
Stiffness of coupling between reception, and in electric automobile wireless charging, the aluminium sheet of coupler is primarily to a shielding action, connects
The aluminium sheet for receiving component 1 is used to shield leakage field, prevents electric automobile chassis eddy-current heating from producing dangerous, but emitting module 2 is embedded in ground
Down and there are magnetic stripe and magnetic film to carry out primary shielding, danger will not be also produced without aluminium sheet secondary shield.Therefore from nonmetallic
Insulation board, its coefficient of coup is studied with the change of skew and its close situation of the magnetic of surrounding.
By the pedestal of emitting module 2 it is respectively aluminium sheet, non-metallic insulation plate it can be seen from Fig. 7 A, the former coefficient of coup
For 0.166, the latter's coefficient of coup is 0.196, and the coefficient of coup improves about 18% again, and skew allowance is held essentially constant.By
Fig. 7 B can be seen that change aluminium sheet into acrylic board after, magnetic around emitting module 2 is close generally to be increased, but the horizontal stroke of electric automobile
2 meters are typically larger than to size, i.e. the center of automobile edge range transmission component 2 is more than 1 meter, and for safety, it is automobile to take 800mm
Edge, it can be seen that although the combination of non-metallic insulation plate pedestal and aluminium sheet pedestal in receiving unit 1 causes week in emitting module 2
Enclose that magnetic is close to increase many, but it is close following still in Electromgnetic seat limit in automobile edge magnetic, it can be considered that this design is full
Sufficient electromagnetic security requirement.
The present invention devises a kind of Asymmetric Electric magnetic coupler suitable for wireless charging device, the Asymmetric Electric magnetic coupling
Device can effectively overcome the influence that aluminium sheet pedestal is vortexed in conventional coupler, lift stiffness of coupling and quality factor, the bar of design
Shape magnetic stripe disposing way can increase the lateral shift allowance of Asymmetric Electric magnetic coupler, be more suitable for the radio of electric automobile
Can transmission.
Claims (9)
- A kind of 1. Asymmetric Electric magnetic coupler suitable for wireless charging device, it is characterised in that：The Asymmetric Electric magnetic coupler Including receiving unit (1) and emitting module (2) two-part structure；Receiving unit (1) and emitting module (2) are staggered relatively, and a determining deviation be present；Receiving unit (1), which includes A cover plates (1A), A coils limiting plate (1B), A coils (1B1), A arrays magnetic stripe (1C), A magnetic stripes, to be determined Position plate (1D), A magnetic films (1E), A magnetic conductors (1F) and A pedestals (1G)；Emitting module (2), which includes B cover plates (2A), B coils limiting plate (2B), B coils (2B1), B arrays magnetic stripe (2C), B magnetic stripes, to be determined Position plate (2D), B magnetic films (2E), B magnetic conductors (2F) and B pedestals (2G)；Wherein, A cover plates (1A) are identical with the structure of B cover plates (2A)；Wherein, A coils limiting plate (1B) is identical with the structure of B coils limiting plate (2B)；Wherein, A coils (1B1) are identical with the structure of B coils (2B1)；Wherein, A arrays magnetic stripe (1C) is identical with the structure of B arrays magnetic stripe (2C)；Wherein, A magnetic stripes location-plate (1D) is identical with the structure of B magnetic stripes location-plate (2D)；Wherein, A magnetic films (1E) are identical with the structure of B magnetic films (2E)；Wherein, A magnetic conductors (1F) are identical with the structure of B magnetic conductors (2F)；A cover plates (1A), which are provided with, to be used for the fixed AA through holes (1A1) of A cover plates (1A) and A pedestals (1G)；The B panels of A coils limiting plate (1B) are provided with A raised (1B4) and A grooves (1B5), are placed with the A grooves (1B5) A coils (1B1)；Rectangular configuration plane of the A coils (1B1) along A coils limiting plate (1B) is closely wound layout；A magnetic stripes location-plate (1D) is provided with A rectangular channels (1D2), and the A rectangular channels (1D2) are used to place A arrays magnetic stripe (1C)；A pedestals (1G) are provided with A base projections (1G1), and A base projections (1G1) contact with A magnetic conductors (1F), A pedestals (1G) A magnetic films (1E), A magnetic stripes location-plate (1D) and A coils limiting plate (1B) are sequentially placed with inner chamber, A magnetic stripes location-plate (1D) A arrays magnetic stripe (1C) is placed in rectangular channel, coil has been laid out in the groove of A coils limiting plate (1B), has then covered A cover plates (1A), top nut is connected after passing through the AB through holes (1A2) on A cover plates (1A), the through hole in A base projections (1G1) by screw；B cover plates (2A), which are provided with, to be used for the fixed BA through holes (2A1) of B cover plates (2A) and B pedestals (2G)；The B panels of B coils limiting plate (2B) are provided with B raised (2B4) and B grooves, and B coils are placed with the B grooves (2B1), rectangular configuration plane of the B coils (2B1) along B coils limiting plate (2B) are closely wound layout；B magnetic stripes location-plate (2D) is provided with B rectangular channels (2D2), and the B rectangular channels (2D2) are used to place B arrays magnetic stripe (2C)；B pedestals (2G) are provided with B base projections (2G1), and B base projections (2G1) contact with B magnetic conductors (2F), B pedestals (2G) B magnetic films (2E), B magnetic stripes location-plate (2D) and B coils limiting plate (2B), B magnetic stripe location-plates are sequentially placed with inner chamber (2G3) B arrays magnetic stripe (2C) is placed in the rectangular channel of (2D), coil has been laid out in the groove of B coils limiting plate (2B), has then covered B Cover plate (2A), connected after passing through the BA through holes (2A1) on B cover plates (2A), the through hole in B base projections (2G1) by screw Nut.
- A kind of 2. Asymmetric Electric magnetic coupler suitable for wireless charging device according to claim 1, it is characterised in that： The spacingb1BFor length of the A coils limiting plate (1B) along X-direction.
- A kind of 3. Asymmetric Electric magnetic coupler suitable for wireless charging device according to claim 1, it is characterised in that： Coil (1B1,2B1) uses a diameter of 2~4mm Litz line coilings, and coil is closely wound 15~40 circles from inside to outside.
- A kind of 4. Asymmetric Electric magnetic coupler suitable for wireless charging device according to claim 1, it is characterised in that： A coils limiting plate (1B) is designated as a along the length of Y direction1B, A coils limiting plate (1B) is designated as b along the length of X-direction1B, andThe interval of adjacent magnetic stripe in A arrays magnetic stripe (1C) is designated as d1C, magnetic stripe is designated as a along the length of Y direction1C, magnetic stripe is along X-axis The length in direction is designated as b1C, the thickness of magnetic stripe is designated as h1C, andb1C=b1B- (15~25) mm,
- A kind of 5. Asymmetric Electric magnetic coupler suitable for wireless charging device according to claim 1, it is characterised in that： A pedestals (1G) are metal material, such as metal aluminum or aluminum alloy or stainless steel.
- A kind of 6. Asymmetric Electric magnetic coupler suitable for wireless charging device according to claim 1, it is characterised in that： B pedestals (2G) are non-metal insulating material, such as acrylic board, wood based panel, epoxy resin board, PVC board or glass epoxy.
- A kind of 7. Asymmetric Electric magnetic coupler suitable for wireless charging device according to claim 1, it is characterised in that： The preferred dimensions of Asymmetric Electric magnetic coupler are that Y-axis length is 600mm, X-axis 327mm.
- A kind of 8. Asymmetric Electric magnetic coupler suitable for wireless charging device according to claim 1, it is characterised in that： Receiving unit (1) gets a promotion with the coefficient of coup after increase magnetic film in emitting module (2), the coefficient of coup 0.145.
- A kind of 9. Asymmetric Electric magnetic coupler suitable for wireless charging device according to claim 1, it is characterised in that： Receiving unit (1) is 0.166 with the coefficient of coup after increase magnetic conductor in emitting module (2), and coupling coefficient ratio does not increase magnetic conductor Improve about 13%, skew allowance is basically unchanged.
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| CN201610356460.7A CN105958659B (en) | 2016-05-25 | 2016-05-25 | A kind of Asymmetric Electric magnetic coupler suitable for wireless charging device |
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| US10725515B2 (en) | 2017-09-29 | 2020-07-28 | Apple Inc. | Inductive interconnection system |
| CN107786005A (en) * | 2017-11-01 | 2018-03-09 | 国家电网公司 | Double layer screen receiving terminal applied to the magnetic coupling of electric automobile wireless power |
| CN108063044B (en) * | 2017-11-30 | 2024-03-26 | 亿创智联(浙江)电子科技有限公司 | Wireless charging coil and wireless charging system |
| CN108177546A (en) * | 2018-01-04 | 2018-06-19 | 无锡市瀚为科技有限公司 | A kind of loop construction suitable for automobile wireless charging system |
| CN109256257A (en) * | 2018-09-14 | 2019-01-22 | 国电南瑞科技股份有限公司 | A kind of orientation magnetic conductive board and transformer used in conjunction with |
| CN112977102A (en) * | 2021-04-19 | 2021-06-18 | 国网黑龙江省电力有限公司电力科学研究院 | Dynamic resonant magnetic coupling wireless charging system for electric automobile |
| CN116683655B (en) * | 2023-08-02 | 2023-11-07 | 中国人民解放军海军工程大学 | Asymmetric insulating layer capacitive coupler and wireless power transmission system |
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| DE69711963T2 (en) * | 1996-01-30 | 2002-11-28 | Sumitomo Wiring Systems | Connection system and method for an electrically powered vehicle |
| CN100555352C (en) * | 2008-08-12 | 2009-10-28 | 南京航空航天大学 | Noncontact whirligig photoelectric coupling transmission system and whirligig thereof |
| CN202473580U (en) * | 2012-03-15 | 2012-10-03 | 中国石油集团西部钻探工程有限公司 | Electromagnetic coupler |
| KR101452093B1 (en) * | 2013-03-13 | 2014-10-16 | 삼성전기주식회사 | Thin film coil, shield part including the same, and contactless power transmission device having the shield part |
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