CN108092417A - A kind of wireless charging device and its control method - Google Patents
A kind of wireless charging device and its control method Download PDFInfo
- Publication number
- CN108092417A CN108092417A CN201711421135.5A CN201711421135A CN108092417A CN 108092417 A CN108092417 A CN 108092417A CN 201711421135 A CN201711421135 A CN 201711421135A CN 108092417 A CN108092417 A CN 108092417A
- Authority
- CN
- China
- Prior art keywords
- transmitting
- coils
- coil
- receiving
- winding group
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000007600 charging Methods 0.000 title claims abstract description 86
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000004804 winding Methods 0.000 claims abstract description 49
- 230000005540 biological transmission Effects 0.000 claims abstract description 41
- 239000013078 crystal Substances 0.000 claims description 21
- 230000008094 contradictory effect Effects 0.000 claims description 13
- 230000008878 coupling Effects 0.000 claims description 8
- 238000010168 coupling process Methods 0.000 claims description 8
- 238000005859 coupling reaction Methods 0.000 claims description 8
- 230000005284 excitation Effects 0.000 claims description 8
- 230000010363 phase shift Effects 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 5
- 230000007547 defect Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 239000000243 solution Substances 0.000 description 11
- 230000008859 change Effects 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
- 230000010355 oscillation Effects 0.000 description 4
- 238000012795 verification Methods 0.000 description 4
- 241000209094 Oryza Species 0.000 description 2
- 235000007164 Oryza sativa Nutrition 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 235000009566 rice Nutrition 0.000 description 2
- 210000004209 hair Anatomy 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000001568 sexual effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- 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
- H02J50/12—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
-
- 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
- H02J50/40—Circuit arrangements or systems for wireless supply or distribution of electric power using two or more transmitting or receiving devices
-
- 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
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
-
- H02J7/025—
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a kind of wireless charging device and its control method, which includes：Transmitting terminal (10) and receiving terminal (20)；Wherein, the transmitting terminal (10), including：The transmitting winding group formed by three or more transmitting coils；The transmitting winding group, for forming uniform launching site, and the transmission of electromagnetic signals in the launching site；The receiving terminal (20), in the range of receiving at the launching site, receiving the electromagnetic signal, and is converted to electric signal needed for load to be charged.The solution of the present invention can overcome the defects of charging inconvenient, inconvenient to use and poor user experience in the prior art, realize the advantageous effect that charging is convenient, easy to use and user experience is good.
Description
Technical field
The invention belongs to wireless charging technical fields, and in particular to a kind of wireless charging device and its control method, especially
It is related to a kind of comprehensive non-contact type wireless charging device and its control method.
Background technology
Wireless power transmission is also known as wireless power transmission, and transmitting non-contact electric energy refers to convert electrical energy by transmitter
For the relaying energy (such as electromagnetism field energy, laser, microwave and mechanical wave) of other forms, after sky transmits a distance, then lead to
It crosses receiver and is converted to electric energy by energy is relayed, realize wireless power transmission.Nowadays, wireless power transmission technology flourishes,
There is practical product, such as Qi (first standardization body --- the wireless chargings for promoting wireless charging technology in the whole world
Alliance, Wireless Power Consortium) standard.
It is existing still need close to practical product electrical appliance (such as mobile phone, PAD mobile terminals etc.) is placed on
It could charge on charger.Although avoiding using charge cable, electrical appliance is still necessary to be placed on defined position ability
It realizes and charges, in the case, equipment becomes no longer " removable ".
In the prior art, there is the defects of inconvenient charging, inconvenient to use and poor user experience.
The content of the invention
It is an object of the present invention in view of the foregoing drawbacks, a kind of wireless charging device and its control method are provided, to solve
It needs electrical appliance being placed on charger the problem of causing to charge inconvenience of could charging in the prior art, reaches promotion and charge
The effect of convenience.
The present invention provides a kind of wireless charging device, including：Transmitting terminal and receiving terminal；Wherein, the transmitting terminal, including：
The transmitting winding group formed by three or more transmitting coils；The transmitting winding group, for forming uniform launching site, and in institute
State transmission of electromagnetic signals in launching site；The receiving terminal, in the range of receiving at the launching site, receiving the electromagnetism letter
Number, and be converted to electric signal needed for load to be charged.
Optionally, the transmitting winding group, including：Three transmitting coils；In three transmitting coils, each two transmitting
The orthogonal setting of coil in a manner of by orthogonal feed magnetic coupling resonance, forms the launching site of emission-type from inside to outside.
Optionally, wherein, when the transmitting winding group include three transmitting coils when, the range of receiving, including：Radius
It is enclosed for the circumference of setting value；And/or in three transmitting coils, the alternating current with frequency and quadrature in phase is passed to, so that institute
It states three transmitting coils and forms three quadrature coils.
Optionally, the transmitting winding group, including：Four transmitting coils；Four transmitting coils, using S-N-S-N
The space magnetic field structure of polarity coil distribution forms the launching site of ecto-entad emission-type.
Optionally, wherein, when the transmitting winding group include four transmitting coils when, the range of receiving, including：By institute
It states in the region that four coils surround；And/or the space magnetic field structure, including：In four transmitting coils, mutually
First pair of coil of opposition passes to the exciting current of setting phase, and mutually contradictory second pair of coil passes to and the setting phase
Reverse phase exciting current.
Optionally, wherein, in the magnetic field formed in first pair of coil, S poles are in the area that four coils surround
In domain；In the magnetic field formed in second pair of coil, N poles are in the region that four coils surround.
Optionally, the transmitting terminal, further includes：Exciting circuit；The exciting circuit, including：Driving source and transmitting capacitance；
The quantity of the exciting circuit, it is consistent with the quantity of the transmitting coil in the transmitting winding group；Each exciting circuit, with
A corresponding transmitting coil forms a launching circuit.
Optionally, the driving source, including：Crystal oscillator and radio-frequency power amplifier；When the transmitting winding group bag
When including three transmitting coils, the driving source further includes：LC quadrature phase shifters；Wherein, when the transmitting winding group includes three
During transmitting coil, the crystal oscillator, the LC quadrature phase shifters and the radio-frequency power amplifier are consecutively connected to correspond to
The launching circuit in；Alternatively, when the transmitting winding group includes four transmitting coils, the crystal oscillator and described
Radio-frequency power amplifier is consecutively connected in corresponding launching circuit.
Optionally, when the transmitting winding group includes three transmitting coils, three transmitting coils, corresponding to same
A crystal oscillator and same LC quadrature phase shifters；Wherein, three driving sources corresponding with three transmitting coils, pass through
By the same crystal oscillator generation frequency of oscillation, again by the same LC quadrature phase shifters offer phase shift, then divide
The mode for not connecing corresponding radio-frequency power amplifier is realized.
Optionally, wherein, the receiving terminal, including：Receiving coil and reception capacitance；The receiving coil, the reception
Capacitance and load to be charged form and receive circuit；And/or the quantity of the receiving terminal is more than one；The transmitting terminal, energy
It is enough that one-to-many charging is carried out to receiving terminal more than one described；And/or the electromagnetic signal that the receiving terminal receives, including：It is described
The comprehensive electromagnetic signal of transmitting winding group transmitting.
Optionally, the receiving terminal, further includes：Receiving terminal rectifier and DC/DC modules；Wherein, the receiving terminal rectification
Device and the DC/DC modules, are successively set between the receiving coil and load to be charged or are successively set on the reception
Between capacitance and the load to be charged.
Match with above-mentioned wireless charging device, another aspect of the present invention provides a kind of controlling party of wireless charging device
Method, including：The transmitting winding group formed by three or more transmitting coils, forms uniform launching site, and at the launching site
Interior transmission of electromagnetic signals；In the range of receiving at the launching site, the electromagnetic signal is received, and is converted to load institute to be charged
Need electric signal.
Optionally, the transmitting winding group formed by three or more transmitting coils, forms uniform launching site, including：It is logical
Crossing makes in three transmitting coils, the orthogonal setting of each two transmitting coil, in a manner of by orthogonal feed magnetic coupling resonance, is formed
The launching site of emission-type from inside to outside；Alternatively, by making four transmitting coils, using the distribution of S-N-S-N polarity coils
Space magnetic field structure forms the launching site of ecto-entad emission-type.
Optionally, wherein, when the transmitting winding group include three transmitting coils when, the range of receiving, including：Radius
It is enclosed for the circumference of setting value；And/or in three transmitting coils, the alternating current with frequency and quadrature in phase is passed to, so that institute
It states three transmitting coils and forms three quadrature coils；Alternatively, when the transmitting winding group includes four transmitting coils, it is described to connect
Scope is received, including：In the region surrounded by four coils；And/or the space magnetic field structure, including：At described four
In transmitting coil, mutually contradictory first pair of coil passes to the exciting current of setting phase, and mutually contradictory second pair of coil leads to
With the reverse phase exciting current with the setting phase.
The solution of the present invention forms uniform emission field by multiple transmitting coils, can realize comprehensive non-contact type electricity
It can transmit, and can realize and flexibly, conveniently, safely realize that mobile wireless charges.
Further, the solution of the present invention forms uniform emission field, without conventional contact and list by multiple transmitting coils
It is positioned to formula Wireless charging coil, can realize " one-to-many " real time charging.
The solution of the present invention as a result, forms uniform emission field by multiple transmitting coils, to realize that non-contact type charges,
It solves the problems, such as to need that electrical appliance is placed on charger to charge in the prior art to cause the inconvenience that charges, so as to, gram
The defects of taking inconvenient charging in the prior art, inconvenient to use and poor user experience is realized and charges convenient, easy to use and use
The advantageous effect that family has been experienced.
Other features and advantages of the present invention will be illustrated in the following description, also, partly becomes from specification
It obtains it is clear that being understood by implementing the present invention.
Below by drawings and examples, technical scheme is described in further detail.
Description of the drawings
Fig. 1 is the facing structure of an embodiment of Orthogonal injection coil and receiving coil in wireless charging device of the invention
Schematic diagram；
Fig. 2 is the structure diagram of an embodiment of wireless power transmission circuit in wireless charging device of the invention；
Fig. 3 is the structure diagram of an embodiment in wireless power region in wireless charging device of the invention.
With reference to attached drawing, reference numeral is as follows in the embodiment of the present invention：
10- transmitting terminals；20- receiving terminals.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with the specific embodiment of the invention and
Technical solution of the present invention is clearly and completely described in corresponding attached drawing.Obviously, described embodiment is only the present invention one
Section Example, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not doing
Go out all other embodiments obtained under the premise of creative work, belong to the scope of protection of the invention.
According to an embodiment of the invention, a kind of wireless charging device is provided, as shown in Figure 1 the wireless charging Denso of the present invention
The structure diagram for the embodiment put.The wireless charging device can include：Transmitting terminal 10 and receiving terminal 20.
In an optional example, the transmitting terminal 10 can include：The emission lines formed by three or more transmitting coils
Circle group.The transmitting winding group can be used for forming uniform launching site, and the transmission of electromagnetic signals in the launching site.
Such as：The common ground of scheme one shown in scheme two described in Fig. 3 and Fig. 1 and Fig. 2, to be formed by multiple excitation coils
Uniform field realizes one-to-many charging.
Optionally, the transmitting winding group can include：Three transmitting coils.
Wherein, in three transmitting coils, the orthogonal setting of each two transmitting coil, with humorous by orthogonal feed magnetic coupling
The mode shaken forms the launching site of emission-type from inside to outside.
Such as：Example shown in Figure 1, when the magnetic field that transmitting coil generates is mutually perpendicular to receiving coil, transmission
Efficiency reaches peak；Conversely, when the magnetic field that transmitting coil generates is mutually parallel with receiving coil, i.e., transmitting coil is with receiving
When coil is mutually perpendicular to, the principle of efficiency of transmission minimum.
Three quadrature coils are formed by the way that three transmitting coils are orthogonal as a result, uniform launching site can be formed, and it is reliable
Property it is high, charging convenience is good.
More optionally, when the transmitting winding group can include three transmitting coils, the range of receiving can wrap
It includes：Radius encloses for the circumference of setting value.
Such as：When receiving coil is located at apart from coordinate origin (radius is the circle of R) any position, the Orthogonal injection resonance
Coil can couple transmission magnetic field energy in all directions with receiving coil system.
Such as：The orthogonal setting of three coils is based entirely on to form omnidirectional emission field to consider, when using orthogonal feedback
During electromagnetic coupling resonance type wireless energy transmission scheme, be considered as magnetic direction vector with time change, periodically from
0 ° rotates to 360 °, and energy transmission efficiency is minimum compared with the variable quantity of the angle change of receiving coil.
Such as：When receiving coil is when radius is the circumference up conversion position of R, in three transmitting coils with receiving coil it
Between pairing transmission relation, without conversion, transmitting coil it is orthogonal setting be based on this to consider, orthogonal setting can be formed
Shimming, when receiving coil in the circumference up conversion position that radius is R or in radius is that multiple receiving coils are distributed on the circumference of R
When, efficiency of transmission varies less.
Wherein, the distance between receiving coil and coordinate origin can be the scopes for realizing wireless charging.The scope, with
The parameters such as resonant frequency, wire radius, coil radius, coil turn, electrical conductivity and load resistance are related, are usually tens lis
Rice.
Such as：The scheme one of Fig. 1 and Fig. 2 is that the circumference that radius is R encloses.
As a result, by forming the range of receiving enclosed to set radius as circumference, it can realize mobile charging, can also realize
One-to-many charging so that charge more convenient, and can ensure normal use, be conducive to promote user experience.
More optionally, in three transmitting coils, the alternating current with frequency and quadrature in phase is passed to, so that described three
Transmitting coil forms three quadrature coils.
Such as：Transmitting coil shown in Fig. 1 uses three quadrature coils, passes to the alternating current of same frequency and receiving coil (in Fig. 1
Only provide 1).
Such as：With frequency, refer to that quadrature coil (i.e. transmitting coil) passes to same frequency alternating current, quadrature in phase.
As a result, by passing to same frequency alternating current to three transmitting coils, the uniformity at launching site to be formed is more advantageous to, into
And charging accuracy and reliability can be promoted.
Optionally, the transmitting winding group can include：Four transmitting coils.
Wherein, four transmitting coils, the space magnetic field structure being distributed using S-N-S-N polarity coils, are formed by outer
The launching site of inside emission-type.
Such as：In wireless power region shown in Fig. 3, peripheral four coils are excitation coil, and inside is put for receiving coil
It puts in region.The space magnetic field structure being distributed using S-N-S-N polarity coils.This scheme can be applied to airport, station, wine
The wireless power that a variety of places in shop provide, and available for some special occasions, such as human body implanting apparatus such as pacemaker
Transmission of electricity problem, the fields such as New-energy electric vehicle.
Such as：The setting of four coils, the space magnetic field structure being distributed using S-N-S-N polarity coils.
Uniform launching site is formed by four transmitting coils as a result, can realize not connecing wirelessly in broader space
Touch is charged, and charging convenience is good, and user experience is more preferably.
More optionally, when the transmitting winding group can include four transmitting coils, the range of receiving can wrap
It includes：In the region surrounded by four coils.
Such as：The scheme two of Fig. 3, in the region surrounded for four coils.
As a result, by carrying out wireless charging in the region that is surrounded in four transmitting coils, charging modes are easy, and charge can
By property height.
More optionally, the space magnetic field structure, can include：In four transmitting coils, mutually contradictory
A pair of of coil passes to the exciting current of setting phase, and mutually contradictory second pair of coil is passed to swash with the reverse phase of the setting phase
Encourage electric current.
Such as：Two mutually contradictory coils pass to exciting current, and S poles are in four coils and surround in region, and in addition
Two opposition coils pass to reverse phase exciting current, and N poles are in four coils and surround in region, i.e., S-N-S-N polarity coils are distributed
Space magnetic field structure.
As a result, by opposing to forming space magnetic field structure two-by-two to four transmitting coils, it is ensured that the launching site of formation
Uniformity and reliability, and then can ensure the reliability and security of wireless charging.
Further, in the magnetic field formed in first pair of coil, S poles are in the region that four coils surround
It is interior.In the magnetic field formed in second pair of coil, N poles are in the region that four coils surround.
As a result, by making the polarity in magnetic field that two pairs of coils are formed on the contrary, the transmitting that four coils are formed can be promoted
The stability of field, and then the reliability and security of wireless charging can be promoted.
Optionally, the transmitting terminal 10, can also include：Exciting circuit.The exciting circuit can include：Driving source
With transmitting capacitance.
Wherein, the quantity of the exciting circuit, it is consistent with the quantity of the transmitting coil in the transmitting winding group.Each institute
Exciting circuit is stated, a launching circuit is formed with corresponding one transmitting coil.
As a result, by driving source and transmitting capacitance, with transmitting coil formed launching circuit so that electromagnetic signal emitting it is steady
It is qualitative it is good, reliability is high.
More optionally, the driving source can include：Crystal oscillator and radio-frequency power amplifier；When the emission lines
When circle group includes three transmitting coils, the driving source further includes：LC quadrature phase shifters.
Wherein, when the transmitting winding group includes three transmitting coils, the crystal oscillator, the orthogonal phase shifts of the LC
Device and the radio-frequency power amplifier are consecutively connected in the corresponding launching circuit；Alternatively, when the transmitting winding group bag
When including four transmitting coils, the crystal oscillator and the radio-frequency power amplifier are consecutively connected to corresponding launching circuit
In.
As a result, by when transmitting coil is three, passing through crystal oscillator and radio-frequency power amplifier；When the transmitting
When coil group includes three transmitting coils, the driving source further includes：LC quadrature phase shifters form driving source, can promote three
A coil forms the convenience and reliability of three quadrature coils.
Further, when the transmitting winding group can include three transmitting coils, three transmitting coils are corresponding
In same crystal oscillator and same LC quadrature phase shifters.
Wherein, three driving sources corresponding with three transmitting coils, by being produced by the same crystal oscillator
Raw frequency of oscillation provides phase shift by the same LC quadrature phase shifters again, then connects corresponding radio-frequency power amplifier respectively
Mode realize.
Such as：The block diagram of wireless power transmission scheme shown in Fig. 2, the core of the system are Orthogonal injection coils and provide with frequency
The high-power RF signal source of phase difference feed.The signal source can select by same crystal oscillator generate frequency of oscillation,
The mode for provide phase shift by LC quadrature phase shifters again, then connecing radio-frequency power amplifier respectively is realized.Receiving terminal and common magnetic
The structure of coupled resonance formula wireless energy transfer receiver is identical, includes receiving coil, radio frequency rectifier, DC-DC conversions
Device and load (being usually mobile terminal).
Wherein, the high-power RF signal source is crystal oscillator in S1 to S3 and Fig. 2 in Fig. 1 to radio frequency work(
The structure of rate amplifier.
As a result, by that, using same crystal oscillator and LC quadrature phase shifters, can be promoted to be formed to three transmitting coils
The stability of three quadrature coils and the uniformity at launching site.
In an optional example, the receiving terminal 20 can be used in the range of receiving at the launching site, receive institute
Electromagnetic signal is stated, and is converted to electric signal needed for load to be charged.
Such as：In existing wireless charging device, have plenty of excitation coil i.e. transmitting coil for single coil, and receive line
It encloses as three pairwise orthogonal coils；Have plenty of emitter and include excitation single coil and the transmitting coil of three pairwise orthogonals,
And the receiving terminal receiving coil comprising three pairwise orthogonals and single loading coil.
And in the solution of the present invention, transmitting coil is the coil of three pairwise orthogonals, and receiving terminal is mobile whole to be embedded in
The single coil at end can be multiple around the receiving coil around transmitting coil while realize wireless power transmission, can
Enough realize one-to-many, real-time, efficient charging；It is opened up in addition, the present invention is different from traditional magnet coupled resonant type wireless electric energy transmission
It flutters, transmitting coil and receiving coil are harsher to the requirement of coil relative position usually based on plane directly-wound coil, and this
Invention transmitting coil forms for three pairwise orthogonal coils, can realize to multiple single coils for being embedded in mobile terminal around
It charges simultaneously, can also overcome the constraint of relative position between coil, can realize comprehensive non-contact type wireless charging.In addition,
The alternative solution that the present invention provides embodies four coils of periphery as excitation coil, and inside is receiving coil placement region, can
It is multiple to place simultaneously, it can also realize one-to-many while real-time, efficient non-contact type wireless charging, can be applied to airport, vehicle
It stands, a variety of places offer wireless powers in hotel, and available for some special occasions, such as human body implanting apparatus such as pacemaker
Deng transmission of electricity problem, the fields such as New-energy electric vehicle.
Form uniform launching site by multiple transmitting coils as a result, can by comprehensive non-contact type wireless charging,
It realizes comprehensive contact-less power transmission, and realizes and flexibly, conveniently, safely realize that mobile wireless charges, filled so as to be promoted
Electric convenience, and the normal use of user is not influenced, greatly improve user experience.
Wherein, the electromagnetic signal that the receiving terminal 20 receives, including：The comprehensive electromagnetic letter of the transmitting winding group transmitting
Number.
Such as：The receiving coil of Fig. 1 can receive the comprehensive electromagnetic signal of transmitting coil, the orthogonal setting of transmitting coil
Energy transmission efficiency can be made minimum compared with the variable quantity of the angle change of receiving coil.
As a result, by the way that receiving terminal is enable to receive the comprehensive electromagnetic signal that transmitting winding group is sent, can be promoted to electromagnetism
The convenience and flexibility that signal receives, and then promote the convenience to charge and flexibility.
Optionally, the receiving terminal 20, can include：Receiving coil and reception capacitance.
Wherein, the receiving coil, the reception capacitance and load to be charged, form and receive circuit.
Such as：The receiving coil of Fig. 1 can receive the comprehensive electromagnetic signal of transmitting coil, the orthogonal setting of transmitting coil
Energy transmission efficiency can be made minimum compared with the variable quantity of the angle change of receiving coil.
It by receiving coil and receives capacitance as a result, and is equipped with, the comprehensive electromagnetic of transmitting coil transmission can be received
Signal, and receive the reliability height that mode is easy, receives electromagnetic signal.
Optionally, the quantity of the receiving terminal 20 is more than one.
Wherein, the transmitting terminal can carry out one-to-many charging to receiving terminal more than one described 20.
Such as：The purpose of three transmitting coils in Fig. 1 is set, is that uniform field is formed around coil in order to realize, realizes " one
To more " (not only 3) charge rather than a transmitting coil corresponds to a receiving coil.
The uniform launching site formed as a result, by transmitting terminal, can charge to multiple receiving terminals, realize " a pair of
It is more " in real time, efficiently charge, it can realize " one-to-many " real time charging, and without conventional contact and one-way fashion wireless charging electric wire
Position is drawn a circle to approve, so as to realize charging while using mobile terminal device for it truly.
Optionally, the receiving terminal 20, can also include：Receiving terminal rectifier and DC/DC modules.
Wherein, the receiving terminal rectifier and the DC/DC modules are successively set on the receiving coil and are born with to be charged
Between load or it is successively set between the reception capacitance and the load to be charged.
Can be that the load to be charged of a variety of demands is charged as a result, by receiving terminal rectifier bridge and DC/DC modules so that
The scope of application of wireless charging is wider, and charging flexibility and convenience are able to significant increase, and according to needed for load electric signal into
Row charges and ensure that charging security.
Through substantial amounts of verification experimental verification, using the technical solution of the present embodiment, uniform emission is formed by multiple transmitting coils
, it can realize comprehensive contact-less power transmission, and can realize and flexibly, conveniently, safely realize that mobile wireless charges.
According to an embodiment of the invention, a kind of control of wireless charging device corresponding to wireless charging device is additionally provided
Method.The control method of the wireless charging device can include：
Step 1, the transmitting winding group formed by three or more transmitting coils, form uniform launching site, and described
Transmission of electromagnetic signals in launching site.
Step 2, in the range of receiving at the launching site, receive the electromagnetic signal, and be converted to load institute to be charged
Need electric signal.
Form uniform launching site by multiple transmitting coils as a result, can by comprehensive non-contact type wireless charging,
It realizes comprehensive contact-less power transmission, and realizes and flexibly, conveniently, safely realize that mobile wireless charges, filled so as to be promoted
Electric convenience, and the normal use of user is not influenced, greatly improve user experience.
In an optional example, by the transmitting winding group of three or more transmitting coils formation, uniform transmitting is formed
, it can include：By making in three transmitting coils, the orthogonal setting of each two transmitting coil, to pass through orthogonal feed magnetic coupling
The mode of resonance forms the launching site of emission-type from inside to outside.
Three quadrature coils are formed by the way that three transmitting coils are orthogonal as a result, uniform launching site can be formed, and it is reliable
Property it is high, charging convenience is good.
Optionally, when the transmitting winding group can include three transmitting coils, the range of receiving can include：
Radius encloses for the circumference of setting value.
As a result, by forming the range of receiving enclosed to set radius as circumference, it can realize mobile charging, can also realize
One-to-many charging so that charge more convenient, and can ensure normal use, be conducive to promote user experience.
Optionally, in three transmitting coils, the alternating current with frequency and quadrature in phase is passed to, so that three hairs
Ray circle forms three quadrature coils.
As a result, by passing to same frequency alternating current to three transmitting coils, the uniformity at launching site to be formed is more advantageous to, into
And charging accuracy and reliability can be promoted.
In an optional example, by the transmitting winding group of three or more transmitting coils formation, uniform transmitting is formed
, it can include：By making four transmitting coils, using the space magnetic field structure of S-N-S-N polarity coils distribution, formed by outer
The launching site of inside emission-type.
Uniform launching site is formed by four transmitting coils as a result, can realize not connecing wirelessly in broader space
Touch is charged, and charging convenience is good, and user experience is more preferably.
Optionally, when the transmitting winding group can include four transmitting coils, the range of receiving can include：
In the region surrounded by four coils.
As a result, by carrying out wireless charging in the region that is surrounded in four transmitting coils, charging modes are easy, and charge can
By property height.
Optionally, the space magnetic field structure, can include：In four transmitting coils, mutually contradictory first
The exciting current of setting phase is passed to coil, mutually contradictory second pair of coil is passed to encourage with the reverse phase of the setting phase
Electric current.
As a result, by opposing to forming space magnetic field structure two-by-two to four transmitting coils, it is ensured that the launching site of formation
Uniformity and reliability, and then can ensure the reliability and security of wireless charging.
In an optional embodiment, the bright scheme of instinct can be realized by comprehensive non-contact type wireless charging
Comprehensive contact-less power transmission, and realize and flexibly, conveniently, safely realize that mobile wireless charges；It is " a pair of by realizing
It is more " in real time, efficiently charge, it can realize " one-to-many " real time charging, and without conventional contact and one-way fashion wireless charging electric wire
Position is drawn a circle to approve, so as to realize charging while using mobile terminal device for it truly.
Such as：September (2017) on the 18th, apple be finally proposed carry wireless charging function iPhone 8/8Plus and
IPhone X, a time wireless charging technology dryness-fire.But regrettably, used in them it is common Qi wireless charging marks
Standard, this, which also means that this three sections of new iPhone have to against charging base, could realize wireless charging.This technology reality
On have existed several years, reality is that even wireless charging, user still need equipment being put on charging panel, this is still
It is a kind of pain --- you cannot use these equipment during charging, otherwise in addition, user needs to fill for every equipment preparation one
Battery plate or just one big charging panel of needs are to be simultaneously all equipment charges, in this way, affecting the normal of user makes
With with convenient sexual experience.In addition, mobile terminal is accurately positioned with charging panel needs can realize efficient charging, what is used at present determines
Position mode has：Three kinds of coil array type, movable coil type and magnet attraction type.
In an optional embodiment, for above several charging schemes, the present invention propose a kind of comprehensive type without
Contact charging system may refer to example shown in FIG. 1.
The solution of the present invention, when being mutually perpendicular to according to the magnetic field generated when transmitting coil with receiving coil, efficiency of transmission reaches
To peak；Conversely, when magnetic field and the receiving coil that transmitting coil generates are mutually parallel, i.e. transmitting coil and receiving coil phase
When mutually vertical, the principle of efficiency of transmission minimum, transmitting coil shown in Fig. 1 uses three quadrature coils, passes to the alternating current of same frequency
And receiving coil (1 is only provided in Fig. 1), when receiving coil is located at apart from coordinate origin (radius is the circle of R) any position,
The Orthogonal injection resonance coil can couple transmission magnetic field energy in all directions with receiving coil system.
Optionally, the orthogonal setting of three coils is based entirely on to form omnidirectional emission field to consider, when using orthogonal
When feeding magnet coupled resonant type wireless energy transmission scheme, magnetic direction vector is considered as with time change, periodically
360 ° are rotated to from 0 °, energy transmission efficiency is minimum compared with the variable quantity of the angle change of receiving coil.
Optionally, with frequency, refer to that quadrature coil (i.e. transmitting coil) passes to same frequency alternating current, quadrature in phase.
Optionally, the receiving coil of Fig. 1, can receive the comprehensive electromagnetic signal of transmitting coil, and the orthogonal of transmitting coil is set
Putting can make energy transmission efficiency minimum compared with the variable quantity of the angle change of receiving coil.
Optionally, the purpose of three transmitting coils in Fig. 1 is set, is that uniform field is formed around coil in order to realize, is realized
" one-to-many " (not only 3) charge rather than a transmitting coil corresponds to a receiving coil.
Optionally, the distance between receiving coil and coordinate origin can be the scopes for realizing wireless charging.The scope,
It is related to the parameters such as resonant frequency, wire radius, coil radius, coil turn, electrical conductivity and load resistance, it is usually tens lis
Rice.
Optionally, when receiving coil is when radius is the circumference up conversion position of R, in three transmitting coils with receiving coil
Between pairing transmission relation, without conversion, transmitting coil it is orthogonal setting be based on this to consider, orthogonal setting can be formed
Uniform field, when receiving coil in the circumference up conversion position that radius is R or in radius is that multiple receiving coils are distributed on the circumference of R
When, efficiency of transmission varies less.
The block diagram of wireless power transmission scheme shown in Fig. 2, the core of the system are Orthogonal injection coils and provide with frequency phase
The high-power RF signal source of difference feed.The signal source can select by same crystal oscillator generate frequency of oscillation, again by
The mode that LC quadrature phase shifters provide phase shift, then connect radio-frequency power amplifier respectively is realized.Receiving terminal and common magnetic coupling
The structure of resonance type wireless energy transmission receiver is identical, comprising receiving coil, radio frequency rectifier, dc-dc and
Load (being usually mobile terminal).
Wherein, the high-power RF signal source is crystal oscillator in S1 to S3 and Fig. 2 in Fig. 1 to radio frequency work(
The structure of rate amplifier.
In an optional example, the solution of the present invention can also be realized by scheme two shown in Fig. 3.Nothing shown in Fig. 3
In line power supply area, peripheral four coils are excitation coil, and inside is placed on for receiving coil in region.This programme two uses
The space magnetic field structure of S-N-S-N polarity coils distribution.This scheme can be applied to airport, station, a variety of places offers in hotel
Wireless power, and available for some special occasions, such as the transmission of electricity problem of human body implanting apparatus such as pacemaker, new energy
The fields such as source electric car.
The common ground of scheme one shown in scheme two described in Fig. 3 and Fig. 1 and Fig. 2, to be formed uniformly by multiple excitation coils
Realize one-to-many charging.Wherein, the scheme one of Fig. 1 and Fig. 2 is that the circumference that radius is R encloses；And the scheme two of Fig. 3, it is four
In the region that a coil surrounds.The setting of two or four coils of scheme, the space magnetic field knot being distributed using S-N-S-N polarity coils
Structure, i.e., wherein mutually contradictory two coils pass to exciting current, and S poles are in four coils and surround in region, and other two
Opposition coil passes to reverse phase exciting current, and N poles are in four coils and surround in region, i.e. the sky of S-N-S-N polarity coils distribution
Between magnetic field structure.
The processing and function realized by the control method of the present embodiment essentially correspond to earlier figures 1 to shown in Fig. 3
Embodiment, principle and the example of wireless charging device, therefore not detailed part in the description of the present embodiment, may refer to foregoing implementation
Related description in example, this will not be repeated here.
Through substantial amounts of verification experimental verification, technical solution using the present invention forms uniform emission field by multiple transmitting coils,
It is positioned without conventional contact and one-way fashion Wireless charging coil, can realize " one-to-many " real time charging.
To sum up, it will be readily appreciated by those skilled in the art that on the premise of not conflicting, above-mentioned each advantageous manner can be certainly
It is combined, is superimposed by ground.
The foregoing is merely the embodiment of the present invention, are not intended to limit the invention, for those skilled in the art
For member, the invention may be variously modified and varied.Any modification within the spirit and principles of the invention, being made,
Equivalent substitution, improvement etc., should be included within scope of the presently claimed invention.
Claims (14)
1. a kind of wireless charging device, which is characterized in that including：Transmitting terminal (10) and receiving terminal (20)；Wherein,
The transmitting terminal (10), including：The transmitting winding group formed by three or more transmitting coils；The transmitting winding group is used
In forming uniform launching site, and the transmission of electromagnetic signals in the launching site；
The receiving terminal (20), in the range of receiving at the launching site, receiving the electromagnetic signal, and is converted to and waits to fill
Electric signal needed for electric loading.
2. the apparatus according to claim 1, which is characterized in that the transmitting winding group, including：Three transmitting coils；
In three transmitting coils, the orthogonal setting of each two transmitting coil, in a manner of by orthogonal feed magnetic coupling resonance,
Form the launching site of emission-type from inside to outside.
3. the apparatus of claim 2, which is characterized in that wherein,
When the transmitting winding group includes three transmitting coils, the range of receiving, including：Radius is the circumference of setting value
It encloses；
And/or
In three transmitting coils, the alternating current with frequency and quadrature in phase is passed to, so that three transmitting coils form three
A quadrature coil.
4. the apparatus according to claim 1, which is characterized in that the transmitting winding group, including：Four transmitting coils；
Four transmitting coils, the space magnetic field structure being distributed using S-N-S-N polarity coils form ecto-entad emission-type
The launching site.
5. device according to claim 4, which is characterized in that wherein,
When the transmitting winding group includes four transmitting coils, the range of receiving, including：It is surrounded by four coils
In region；
And/or
The space magnetic field structure, including：
In four transmitting coils,
First pair of mutually contradictory coil pass to setting phase exciting current, mutually contradictory second pair of coil pass to it is described
Set the reverse phase exciting current of phase.
6. device according to claim 5, which is characterized in that wherein,
In the magnetic field formed in first pair of coil, S poles are in the region that four coils surround；
In the magnetic field formed in second pair of coil, N poles are in the region that four coils surround.
7. according to the device described in one of claim 1-6, which is characterized in that the transmitting terminal (10) further includes：Excitation electricity
Road；The exciting circuit, including：Driving source and transmitting capacitance；
The quantity of the exciting circuit, it is consistent with the quantity of the transmitting coil in the transmitting winding group；
Each exciting circuit forms a launching circuit with corresponding one transmitting coil.
8. device according to claim 7, which is characterized in that the driving source, including：Crystal oscillator and radio-frequency power
Amplifier；When the transmitting winding group includes three transmitting coils, the driving source further includes：LC quadrature phase shifters；Its
In,
When the transmitting winding group includes three transmitting coils, the crystal oscillator, LC quadrature phase shifters and described
Radio-frequency power amplifier is consecutively connected in the corresponding launching circuit；
Alternatively,
When the transmitting winding group includes four transmitting coils, the crystal oscillator and the radio-frequency power amplifier, according to
It is secondary to be connected in corresponding launching circuit.
9. device according to claim 8, which is characterized in that when the transmitting winding group includes three transmitting coils,
Three transmitting coils, corresponding to same crystal oscillator and same LC quadrature phase shifters；
Wherein, three driving sources corresponding with three transmitting coils, by being shaken by the same crystal oscillator generation
It swings frequency, provide phase shift, the side for then connecing corresponding radio-frequency power amplifier respectively by the same LC quadrature phase shifters again
Formula is realized.
10. according to the device described in one of claim 1-9, which is characterized in that wherein,
The receiving terminal (20), including：Receiving coil and reception capacitance；
The receiving coil, the reception capacitance and load to be charged, form and receive circuit；
And/or
The quantity of the receiving terminal (20) is more than one；
The transmitting terminal can carry out one-to-many charging to receiving terminal more than one described (20)；
And/or
The electromagnetic signal that the receiving terminal (20) receives, including：The comprehensive electromagnetic signal of the transmitting winding group transmitting.
11. device according to claim 10, which is characterized in that the receiving terminal (20) further includes：Receiving terminal rectifier
With DC/DC modules；Wherein,
The receiving terminal rectifier and the DC/DC modules, be successively set between the receiving coil and load to be charged or
It is successively set between the reception capacitance and the load to be charged.
12. a kind of control method of wireless charging device as described in claim 1-11 is any, which is characterized in that including：
The transmitting winding group formed by three or more transmitting coils, forms uniform launching site, and is sent out in the launching site
Radio magnetic signal；
In the range of receiving at the launching site, the electromagnetic signal is received, and is converted to electric signal needed for load to be charged.
13. according to the method for claim 12, which is characterized in that the transmitting coil formed by three or more transmitting coils
Group forms uniform launching site, including：
By making in three transmitting coils, the orthogonal setting of each two transmitting coil, to pass through the side of orthogonal feed magnetic coupling resonance
Formula forms the launching site of emission-type from inside to outside；
Alternatively,
By making four transmitting coils, using the space magnetic field structure of S-N-S-N polarity coils distribution, ecto-entad transmitting is formed
The launching site of formula.
14. according to the method for claim 13, which is characterized in that wherein,
When the transmitting winding group includes three transmitting coils, the range of receiving, including：Radius is the circumference of setting value
It encloses；
And/or
In three transmitting coils, the alternating current with frequency and quadrature in phase is passed to, so that three transmitting coils form three
A quadrature coil；
Alternatively,
When the transmitting winding group includes four transmitting coils, the range of receiving, including：It is surrounded by four coils
In region；
And/or
The space magnetic field structure, including：
In four transmitting coils, mutually contradictory first pair of coil passes to the exciting current of setting phase, mutually contradictory
Second pair of coil pass to and it is described setting phase reverse phase exciting current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711421135.5A CN108092417A (en) | 2017-12-25 | 2017-12-25 | A kind of wireless charging device and its control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711421135.5A CN108092417A (en) | 2017-12-25 | 2017-12-25 | A kind of wireless charging device and its control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108092417A true CN108092417A (en) | 2018-05-29 |
Family
ID=62179199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711421135.5A Pending CN108092417A (en) | 2017-12-25 | 2017-12-25 | A kind of wireless charging device and its control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108092417A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109038845A (en) * | 2018-08-02 | 2018-12-18 | 大连理工大学 | Omnidirectional spherical equipment inductive coupled wireless power reception device based on spherical surface segmentation |
| CN109560620A (en) * | 2018-12-29 | 2019-04-02 | 深圳蔚蓝无限科技有限公司 | Radio energy emission system and electrostatic wave preservation device |
| WO2020051909A1 (en) * | 2018-09-14 | 2020-03-19 | 哈尔滨工业大学（深圳） | Underwater charging and communication integration apparatus, and underwater wireless charging apparatus |
| CN113452149A (en) * | 2021-06-17 | 2021-09-28 | 湖北工业大学 | Wireless charging box |
| US11923690B2 (en) | 2018-06-26 | 2024-03-05 | Huawei Technologies Co., Ltd. | Wireless charging apparatus and method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101364968A (en) * | 2007-08-09 | 2009-02-11 | 株式会社东芝 | Radio transmitter using cartesian loop |
| CN102593964A (en) * | 2012-03-20 | 2012-07-18 | 中国人民解放军国防科学技术大学 | Direction-adaptive magnetic coupling resonant wireless power supply method and device |
| CN104600877A (en) * | 2015-02-13 | 2015-05-06 | 哈尔滨工业大学 | Wireless power transmission device with sidesway adaptability and rotation adaptability |
| CN106026417A (en) * | 2016-05-25 | 2016-10-12 | 重庆大学 | Multiphase excitation-total space pickup wireless energy transfer system and control method therefor |
| CN107005071A (en) * | 2014-12-18 | 2017-08-01 | 索尼公司 | Charging station, charging system and method for induction charging |
| CN107508389A (en) * | 2017-09-27 | 2017-12-22 | 福州大学 | A kind of omnirange radio energy transmission system and its control method for improving |
-
2017
- 2017-12-25 CN CN201711421135.5A patent/CN108092417A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101364968A (en) * | 2007-08-09 | 2009-02-11 | 株式会社东芝 | Radio transmitter using cartesian loop |
| CN102593964A (en) * | 2012-03-20 | 2012-07-18 | 中国人民解放军国防科学技术大学 | Direction-adaptive magnetic coupling resonant wireless power supply method and device |
| CN107005071A (en) * | 2014-12-18 | 2017-08-01 | 索尼公司 | Charging station, charging system and method for induction charging |
| CN104600877A (en) * | 2015-02-13 | 2015-05-06 | 哈尔滨工业大学 | Wireless power transmission device with sidesway adaptability and rotation adaptability |
| CN106026417A (en) * | 2016-05-25 | 2016-10-12 | 重庆大学 | Multiphase excitation-total space pickup wireless energy transfer system and control method therefor |
| CN107508389A (en) * | 2017-09-27 | 2017-12-22 | 福州大学 | A kind of omnirange radio energy transmission system and its control method for improving |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11923690B2 (en) | 2018-06-26 | 2024-03-05 | Huawei Technologies Co., Ltd. | Wireless charging apparatus and method |
| CN109038845A (en) * | 2018-08-02 | 2018-12-18 | 大连理工大学 | Omnidirectional spherical equipment inductive coupled wireless power reception device based on spherical surface segmentation |
| CN109038845B (en) * | 2018-08-02 | 2021-09-24 | 大连理工大学 | Non-directional spherical equipment induction coupling type wireless power receiving device based on spherical segmentation |
| WO2020051909A1 (en) * | 2018-09-14 | 2020-03-19 | 哈尔滨工业大学（深圳） | Underwater charging and communication integration apparatus, and underwater wireless charging apparatus |
| CN109560620A (en) * | 2018-12-29 | 2019-04-02 | 深圳蔚蓝无限科技有限公司 | Radio energy emission system and electrostatic wave preservation device |
| CN113452149A (en) * | 2021-06-17 | 2021-09-28 | 湖北工业大学 | Wireless charging box |
| CN113452149B (en) * | 2021-06-17 | 2022-08-16 | 湖北工业大学 | Wireless charging box |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108092417A (en) | A kind of wireless charging device and its control method | |
| US8558412B2 (en) | Wireless power transmitter, wireless power receiver, and method for wireless power transfer using them | |
| KR101743777B1 (en) | Method for wireless charging and apparatus for the same | |
| CN202997711U (en) | Wireless power supply local computing system | |
| US20110221389A1 (en) | Wireless power charging method and apparatus for electronic device | |
| US20130063082A1 (en) | Wireless power receiver and control method thereof | |
| US11133706B2 (en) | Wireless power transmitter | |
| KR20140031782A (en) | Wireless power transmitter for excluding cross connected wireless power receiver and method for controlling thereof | |
| KR101953913B1 (en) | Device and System for Wireless Power Transmission using Transmission Coil Array | |
| KR20160108031A (en) | Wireless power transmitter | |
| KR20130045213A (en) | Wireless power transmitter and method for controlling thereof | |
| KR20130102218A (en) | Wireless power receiving device with multi coil and wireless power receiving method | |
| US20140159673A1 (en) | Wireless charging apparatus and method | |
| KR20130119585A (en) | Wireless power transmitting/receiving apparatus | |
| KR101341510B1 (en) | Magnetic energy beamforming method and apparatus for wireless power transmission | |
| KR20170048095A (en) | Wireless power transmission and charging device using vertical type of power transmission method | |
| KR20140011557A (en) | Wireless electric power link transmitter of resonance type comprising battery part | |
| CN206727695U (en) | A kind of non-contact type wireless charging equipment for mobile phone | |
| KR20140094779A (en) | wireless power transmitter | |
| KR20150137543A (en) | Wireless power transmission system and method for supporting charging using multi-standard | |
| CN205595907U (en) | Transformer and power strip | |
| KR20180057939A (en) | Multi-mode antenna and wireless power receiver using the same | |
| KR102193642B1 (en) | Hybrid wireless power transmission device which enables to transmit resonance power signal and induced power signal simultaneously and hybrid wireless power transmission system including the same | |
| KR20140074178A (en) | Apparatus and method for wireless charge | |
| KR20190120723A (en) | Method and device for wireless charging of electrical energy storage in a fixed or mobile consumer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180529 |
|
| RJ01 | Rejection of invention patent application after publication |