CN108092421A

CN108092421A - Wireless charging method and the device and system for wireless charging method

Info

Publication number: CN108092421A
Application number: CN201711164820.4A
Authority: CN
Inventors: 蔡瑢锡
Original assignee: LG Innotek Co Ltd
Current assignee: LG Innotek Co Ltd
Priority date: 2016-11-21
Filing date: 2017-11-21
Publication date: 2018-05-29
Also published as: JP2018085919A; KR20180057069A

Abstract

Provide a kind of wireless charging method that can realize high-speed radio charging and a kind of device and system for the wireless charging method.A kind of wireless power transmitter includes：Include the power transmission unit of one or more transmitting coils；Power conversion unit is configured to the intensity for the DC electric power that conversion applies from outside；Driving unit is configured to that the DC electric power applied from power conversion unit is converted to AC electric power using one or more inverters, and the AC electric power is supplied to one or more transmitting coil；Communication unit is configured to exchange information with external device (ED)；And controller, it is configured to be grouped to control charge mode based on the charge mode received by communication unit, wherein, if charge mode is rapid charge pattern, inverter is bridge-type inverter.

Description

Wireless charging method and the device and system for wireless charging method

Cross reference to related applications

This application claims the priority of the korean patent application 10-2016-0155224 submitted on November 21st, 2016 Rights and interests, the entire disclosure of which are incorporated herein by reference.

Technical field

Present disclosure is related to wireless power transmission technology, and relates more particularly to realize what high-speed radio charged Wireless charging method and the device and system for the wireless charging method.

Background technology

The portable terminal of such as mobile phone or notebook computer includes the battery and use that store electric power In the circuit charged and discharged to battery.

The example for being commonly used for the electrically connected method between the charging unit and battery to the power charge in battery can be with It is terminal Supply Method, which is used to by receiving supplied commercial power and be converted into commercial power Come corresponding to the voltage and current of battery through the terminal of battery to battery supplied electric energy.Physical cables or electric wire supply for terminal Induction method.Therefore, when terminal Supply Method uses much equipment, many cables occupy sizable working space, tissue not Good and appearance is bad.In addition, terminal Supply Method may due between terminal potential difference, caused by foreign matter damage and The generation of fire, naturally electric discharge, deterioration of service life and battery performance etc. and cause instantaneous discharge phenomenon.

It is such in order to solve the problems, such as, it has recently been proposed using the method and its control method for being used for Wireless power transmission Charging system (hereinafter referred to as " wireless charging system ").Past is not equipped with wireless charging in some mobile terminals substantially System, and client should individually buy the accessory of wireless charging receiver.Therefore, it is relatively low to the demand of wireless charging system. It is anticipated, however, that it will be increased sharply using the client of wireless charging system.Additionally, it is contemplated that terminal manufacturer will allow in mobile terminal In be equipped with wireless charging function substantially.

In general, wireless charging system be configured with using wireless power transmission method supply electric energy wireless power transmitter and The wireless power receiver to be charged by receiving the electric energy supplied from wireless power transmitter for battery.

Wireless charging system can use at least one wireless power transmission method (for example, electromagnetic induction method, electromagnetism are humorous Method of slight, RF wireless power transmission methods etc.) transmit electric power.

As an example, it is passed based on electromagnetic induction principle is used to perform the various wireless powers of the electromagnetic induction method of charging Defeated standard may be used as wireless power transmission method, and wherein electromagnetic induction principle is the magnetic field generated by power transmitter coil Influence electricity is sensed in receiver coil.Here, the wireless power transmission standard based on electromagnetic induction method can include Based on wireless charging alliance (Wireless Power Consortium, WPC) or/and electric utility alliance (Power Matters Alliance, PMA) defined in electromagnetic induction method wireless charging technology.

As another example, the magnetic field Yi Te by the way that the transmitting coil from wireless power transmitter is allowed to generate can be used Determine the EMR electromagnetic resonance method work for the wireless power receiver that resonant frequency is tuned to deliver power to positioned at short distance For wireless power transmission method.Here, EMR electromagnetic resonance method can include the use of the nothing as wireless charging technical standard tissue The wireless charging skill of EMR electromagnetic resonance method defined in line Powerline Alliance (Alliance for Wireless Power, A4WP) Art.

As another example, delivered power to by allowing to carry low electrical energy in RF signals positioned at over long distances The RF wireless power transmission methods of the wireless power receiver at place may be used as wireless power transmission method.

Simultaneously, it is proposed that with existing cable is used to perform the time corresponding high-speed radio charging skill needed for wired charging Art.However, in typical high-speed radio charging technique, noise current increases with the increase of charging power.As a result, occur Suspend the phenomenon that charging during high-speed radio charges.

The content of the invention

Embodiment provides a kind of wireless charging method and a kind of device and system for the wireless charging method.

Being used for embodiment further provides a kind of wireless charging method that can realize high-speed radio charging and one kind should The device and system of wireless charging method.

Embodiment a kind of make it possible to according to the state of wireless power reception device and request be also provided and adaptively Change the wireless charging method of charge mode and a kind of device and system for the wireless charging method.

Embodiment further provides a kind of nothings that can be realized the phenomenon that preventing charging pause during high-speed radio charges Micro USB method for electrically and a kind of device and system for the wireless charging method.

It can also realize what charged area broadened even if when high-speed radio charges and changes embodiment further provides a kind of Wireless charging method and a kind of device and system for the wireless charging method.

Inverter style is determined embodiment further provides a kind of Self-adaptive strength made it possible to according to output power Or a kind of wireless charging method and the device and system for the wireless charging method of electrical control method.

Embodiment further provides a kind of wireless chargings for making it possible to steadily control electric power in high-speed radio charges Method and a kind of device and system for the wireless charging method.

In one embodiment, wireless power transmitter includes：Electric power including one or more transmitting coils passes Send unit；Power conversion unit is configured to the intensity for the DC electric power that conversion applies from outside；Driving unit is configured Into using one or more inverters that the DC electric power applied from power conversion unit is converted into AC electric power, and AC electric power is carried Supply one or more transmitting coil；Communication unit is configured to exchange information with external device (ED)；And control Device is configured to be grouped to control charge mode based on the charge mode received by communication unit, wherein, if charged Pattern is rapid charge pattern, then inverter is bridge-type inverter.

If being value corresponding with rapid charge pattern in the charge mode value that includes of charge mode grouping, controller Charging can be performed by the way that the general low power charge pattern for being arranged to acquiescence is changed over rapid charge pattern.

Charge mode grouping can also include charge mode and change operating frequency.

It can be the fixed predetermined behaviour when the generation AC signals under rapid charge pattern that charge mode, which changes operating frequency, Working frequency.

It can be default that charge mode, which changes operating frequency,.

It can steadily be given birth at the end of wireless charging before wireless charging starts that charge mode, which changes operating frequency, Into the operating frequency of AC electric power.

When stably generating AC electric power under general low power charge pattern, controller can be by inciting somebody to action general low electric power Charge mode changes over rapid charge pattern to perform charging.

Charge mode grouping can also include charge mode and change stability contorting erroneous packet count value.

Stability contorting erroneous packet can have the control error value for 0.

If the number of the stability contorting erroneous packet continuously received, which is equal to or more than charge mode, changes stability contorting Erroneous packet count value, then controller can be filled by the way that general low power charge pattern is changed over rapid charge pattern to perform Electricity.

When stably generating AC electric power under general low power charge pattern, controller can be used when in rapid charge Fixed operating frequency is as operating frequency when AC signals are generated under pattern.

Change stability contorting mistake when the number of the stability contorting erroneous packet continuously received is equal to or more than charge mode By mistake during classified counting value, controller can use the fixed operating frequency conduct when the generation AC signals under rapid charge pattern Operating frequency.

Driving unit can also include AC signal controllers, and AC signal controllers are configured to the predetermined control based on controller Signal processed come control from inverter export AC electric power intensity.

AC signal controllers can include：Operating frequency generation unit, being configured to generation has special operating frequency AC signals；And phase-shift unit, it is configured to put down to control from what transmitting coil exported by controlling the phase of AC signals The intensity of equal output power.

Power transmission unit can include：Multiple transmitting coils；And multiplexer, control is configured to by electric power Converting unit or the electric power of driving unit conversion are sent to any one transmitting coil in the multiple transmitting coil.

In another embodiment, a kind of wireless power receiver includes：Receiving coil；Communication unit is configured to Grouping is extracted by demodulating the signal received via receiving coil；And controller, it is configured to by from communication unit Member receives extracted grouping to identify whether external device (ED) will perform rapid charge, and determines the need for changing and currently hold Capable charge mode, wherein, when needing to change charge mode, controller generation is predetermined including the charge mode value to be changed Charge mode is grouped, and the charge mode grouping of generation is transmitted to external device (ED) by communication unit, wherein, if charged The charge mode value that mode packet includes is value corresponding with rapid charge pattern, then controller will be by that will be arranged to acquiescence General low power charge pattern changes over rapid charge pattern to perform charging.

It can be default that charge mode, which changes operating frequency,.

It can steadily be given birth at the end of wireless charging before wireless charging is started that charge mode, which changes operating frequency, Into the operating frequency of AC electric power.

Stability contorting erroneous packet can have the control error value for 0.

When stably generating AC electric power under general low power charge pattern, controller can be used in rapid charge mould Fixed operating frequency is as operating frequency when AC signals are generated under formula.

Change stability contorting mistake when the number of the stability contorting erroneous packet continuously received is equal to or more than charge mode By mistake during classified counting value, controller can use fixed operating frequency when generating AC signals under rapid charge pattern to be used as behaviour Working frequency.

In another embodiment, it is a kind of to be received for wirelessly receiving the wireless power of electric power from wireless power transmitter Wireless charging method in device, the wireless charging method include：Receiver status information is collected in the power transmission stage；Based on institute The receiver status information of collection determines the need for changing charge mode；And it charges if needing to change as determining result Pattern then will be transmitted to wireless power transmitter including the grouping of the predetermined charge mode for the charge mode value to be changed, wherein, it fills Power mode grouping includes charge mode and changes operating frequency or charge mode change stability contorting erroneous packet count value.

In another embodiment, a kind of wireless power for being used to electric power being wirelessly communicated to wireless power receiver is sent out Wireless charging method in emitter, the wireless charging method include：After the power transmission stage is switched to, receive for initial The grouping of Electric control；Transmission notice supports the first grouping of rapid charge pattern；Being received from wireless power receiver includes filling First respond packet of power mode value；And perform charging to correspond to the charge mode of charge mode value, wherein, with charging When being charged under the corresponding charge mode of mode value, by fixed operation frequency after a predetermined time come at a high speed Charging is performed under charge mode.

In another embodiment, a kind of wireless power for being used to electric power being wirelessly communicated to wireless power receiver is sent out Wireless charging method in emitter, the wireless charging method include：Charge mode grouping is received, charge mode grouping includes setting It is set to the charge mode value of value corresponding with rapid charge pattern；It checks whether and supports rapid charge pattern；If as inspection As a result support rapid charge pattern, then transmit notice to wireless power receiver and support the first point predetermined of rapid charge pattern Group；And wireless charging is performed under rapid charge pattern by fixed operation frequency after a predetermined time；And If not supporting rapid charge pattern as inspection result, transmit notice and do not support the second point predetermined of rapid charge pattern Group.

In another embodiment, a kind of wireless power for being used to electric power being wirelessly communicated to wireless power receiver is sent out Wireless charging method in emitter, the wireless charging method include：After the power transmission stage is switched to, receive for initial The grouping of Electric control；Transmission notice supports the first grouping of rapid charge pattern；Being received from wireless power receiver includes filling First respond packet of power mode value；Check whether charge mode value corresponds to rapid charge pattern；If charge mode value pair Then it should check whether after AC signals to generate by changing operating frequency and have been received by stable control in rapid charge pattern Erroneous packet processed；In the case where receiving the special operating frequency of stability contorting erroneous packet, the stability contorting continuously received is checked Whether the count number of erroneous packet is equal to or more than predetermined value；And the if stability contorting erroneous packet that continuously receives Count number is equal to or more than predetermined value, then performs charging under rapid charge pattern by fixed operation frequency.

In another embodiment, a kind of wireless power for being used to electric power being wirelessly communicated to wireless power receiver is sent out Wireless charging method in emitter, the wireless charging method include：Charge mode grouping is received, charge mode grouping includes setting It is set to the charge mode value of value corresponding with rapid charge pattern；It checks whether and supports rapid charge pattern；If as inspection As a result support rapid charge pattern, then transmit notice to wireless power receiver and support the first point predetermined of rapid charge pattern Group；By checking whether after changing operating frequency to generate AC signals and having been received by stability contorting erroneous packet；It is receiving To under the special operating frequency of stability contorting erroneous packet, the count number of the stability contorting erroneous packet continuously received is checked Whether predetermined value is equal to or more than；And if the count number of the stability contorting erroneous packet continuously received is equal to or more than Predetermined value then performs charging by fixed operation frequency under rapid charge pattern.

It is had the advantages that according to wireless charging method in the present disclosure and device for the method and system.

Wireless charging method and device for the method and system can be provided.

Furthermore it is possible to minimize the charging time by high-speed radio charging.

Furthermore it is possible to charge mode is adaptively changed according to the state of wireless power reception device and request.

Furthermore it is possible to the phenomenon that preventing from suspending charging due to noise current during high-speed radio charges.

In addition, stably generate AC signals during changing over high-speed radio and charging.Accordingly it is possible to prevent charging pause Phenomenon, and charged area can be widened.

Furthermore it is possible to inverter style or electrical control method are determined according to the Self-adaptive strength of output power.

Furthermore it is possible to steadily control electric power in high-speed radio charging.

Further, it is possible to use multiple transmitting coils obtain broader charged area.It is thus possible to improve convenience for users.

Further, since use the only one circuit in multiple same circuits, it is possible to reduce wireless power transmitter Size.Further, since the component count used is reduced, it is possible to reduce production cost.

Further, it is possible to use the component defined in issued wireless power transmission standard.

According to detailed description given below, the further scope of application in the present disclosure will be apparent.It however, should It should be appreciated that although it is indicated that preferred embodiment in the present disclosure, but it is described in detail and specific example is only logical Cross what explanation provided, the detailed description because according to, the variations and modifications pair in spirit and scope in the present disclosure It will be apparent for those skilled in the art.

Description of the drawings

Fig. 1 is the block diagram for showing wireless charging system according to the embodiment of the present disclosure.

Fig. 2 is the block diagram for showing the wireless charging system according to another embodiment in the present disclosure.

Fig. 3 is the sensing signal transmission process in the wireless charging system shown according to the embodiment of the present disclosure Figure.

Fig. 4 is the state transition diagram for showing the wireless power transmission process defined in wireless charging alliance (WPC).

Fig. 5 is the state transition diagram for showing the wireless power transmission process defined in electric utility alliance (PMA).

Fig. 6 is the block diagram for the structure for showing wireless power transmitter according to the embodiment of the present disclosure.

Fig. 7 is the block diagram for the structure for showing the wireless power receiver coupled with the wireless power transmitter of Fig. 6.

Fig. 8 is the figure for the modulation and demodulation method for showing wireless power signal according to the embodiment of the present disclosure.

Fig. 9 is the packet format based on wireless power transmission process shown according to the embodiment of the present disclosure Figure.

Figure 10 be show according to the embodiment of the present disclosure based on wireless power transmission process wireless power receive The figure for the various groupings that device can transmit in examination stage (ping phase).

Figure 11 is the mark grouping based on wireless power transmission process shown according to the embodiment of the present disclosure The figure of message format.

Figure 12 be show configuration packet based on wireless power transmission process according to the embodiment of the present disclosure and The figure of the message format of Electric control release grouping.

Figure 13 is the filling for request based on wireless power transmission process shown according to the embodiment of the present disclosure The figure of the structure for the charge mode grouping that power mode changes.

Figure 14 is to show to be used to ask based on wireless power transmission process according to another embodiment in the present disclosure Seek the figure of the structure of the charge mode grouping of charge mode change.

Figure 15 is to show to be used to ask based on wireless power transmission process according to another embodiment in the present disclosure Seek the figure of the structure of the charge mode grouping of charge mode change.

Figure 16 is to show to be used to ask based on wireless power transmission process according to another embodiment in the present disclosure Seek the figure of the structure of the charge mode grouping of charge mode change.

Figure 17 is to show to be used to ask based on wireless power transmission process according to another embodiment in the present disclosure Seek the figure of the structure of the charge mode grouping of charge mode change.

Figure 18 be show according to the embodiment of the present disclosure based on wireless power transmission process wireless power receive The various groupings and its figure of message format that device can transmit in the power transmission stage.

Figure 19 is to show the charge mode figure that charge mode according to the embodiment of the present disclosure changes.

Figure 20 is the wireless charging method in the wireless power receiver shown according to the embodiment of the present disclosure Figure.

Figure 21 is the figure of the wireless charging method in the wireless charging system shown according to the embodiment of the present disclosure.

Figure 22 is the wireless charging method in the wireless power transmitter shown according to the embodiment of the present disclosure Figure.

Figure 23 is the wireless charging side in the wireless power transmitter shown according to another embodiment in the present disclosure The figure of method.

Figure 24 is the wireless charging method in the wireless charging system shown according to another embodiment in the present disclosure Figure.

Figure 25 is the wireless charging side in the wireless power transmitter shown according to another embodiment in the present disclosure The figure of method.

Figure 26 is the wireless charging side in the wireless power transmitter shown according to another embodiment in the present disclosure The figure of method.

Figure 27 is the block diagram for the structure for showing wireless power control device according to the embodiment of the present disclosure.

Figure 28 is the block diagram of the detailed construction for the first AC signal controllers for showing Figure 27.

Figure 29 is the inverter for being used to be converted to DC signals AC signals shown according to the embodiment of the present disclosure Basic principle of operation figure.

Figure 30 is the wireless power transmission apparatus equipped with inverter of semibridge type according to the embodiment of the present disclosure Equivalent circuit diagram.

Figure 31 is the wireless power transmission apparatus equipped with bridge-type inverter according to the embodiment of the present disclosure Equivalent circuit diagram.

Figure 32 be show according to the embodiment of the present disclosure be used for it is wireless under general low power charge pattern The flow chart of the wireless power control method of charging.

Figure 33 is to show to be used under general low power charge pattern according to another embodiment in the present disclosure The flow chart of the wireless power control method of wireless charging.

Figure 34 is to show being used for based on defeated in general low power charge pattern according to the embodiment of the present disclosure Go out the change of the intensity of electric power to change the method for inverter style and the figure of electrical control method.

Figure 35 be show according to the embodiment of the present disclosure activate semi-bridge type under general low power charge pattern The flow chart for being used to control the method for wireless power in the state of inverter.

Figure 36 be show according to the embodiment of the present disclosure activate bridge-type under general low power charge pattern The flow chart for being used to control the method for wireless power in the state of inverter.

Figure 37 is the block diagram of the detailed construction for the 2nd AC signal controllers for showing Figure 27.

Figure 38 be show according to the embodiment of the present disclosure be used under rapid charge pattern be based on output power Intensity change come control electric power method figure.

Figure 39 is the activation bridge-type inverter under rapid charge pattern shown according to the embodiment of the present disclosure In the state of for control wireless power method flow chart.

Figure 40 is the figure for showing wireless charging transmitting coil according to the embodiment of the present disclosure.

Figure 41 be show according to the embodiment of the present disclosure in the wireless power transmitter including multiple coils Three driving circuits including bridge-type inverter figure.

Figure 42 be show according to the embodiment of the present disclosure include a driving circuit while including multiple coils Wireless power transmitter figure.

Figure 43 is any one coupling in the multiple transmitting coils of permission shown according to the embodiment of the present disclosure To the figure of the multiple switch of a driving circuit.

Specific embodiment

Hereinafter, device according to the embodiment of the present disclosure and various sides are more fully described with reference to the accompanying drawings Method.The suffix " module " for component and " unit " used in the following description be for only for ease of prepare this specification and It provides, therefore they are not endowed specific meaning or function.

Meanwhile all components for forming illustrative embodiments in the present disclosure be described as coupling be integrated or that This coupling ground is operated, but present disclosure is not necessarily limited to illustrative embodiments.That is, all components can Selection of land to be operated with being coupled scope of the present disclosure interior one or more components.In addition, all components can be one It is realized in a independent hardware, but each some or all of component can selectively be combined to be embodied as having Perform some functions for being combined in one or more hardware or functional program module computer program.This field skill Art personnel can easily infer the code and code segment of configuration computer program.Computer program is stored in computer-readable Jie It in matter, and is read and is run by computer, so as to realize illustrative embodiments in the present disclosure.Computer program The example of storage medium can include magnetic recording media, optical record medium, carrier media etc..

In the description of implementation below, when by each component be described as being formed in component " upper/top " or " lower section/ Under " when, it can be understood as the situation that two components are formed by being in direct contact with one another, and be also understood that be another therebetween The situation of there are one outer formation or more other assemblies.Therefore, it should which technical concept according to the present embodiment judges meaning.

It will be further understood that the terms such as " comprising " or " having " be intended to refer to feature disclosed in specification, number, Operation, action, the presence of component, components or groups thereof, and be not intended to and exclude other one or more features, number, behaviour Work, action, component, components or groups thereof there may be or the possibility that may be added.For not being variously defined, this What text used includes technology or all terms of scientific terminology, and there is present disclosure those skilled in the art to be generally understood Meaning.Term with the definition defined in dictionary should be understood that so that they are with consistent with the background of correlation technique Meaning.For the content being not exactly defined in the application, should not by it is preferable or excessively it is formal in a manner of understand term.

In addition, in the component in describing example components in the present disclosure, can use such as first, second, A, B, the term of (a), (b) etc..These terms are only used to distinguish component and other assemblies.Therefore, the property of corresponding component, the time, Order etc. should not be limited by these terms.When any component is " connected ", " coupling " or during " coupled " to other assemblies, it should note Meaning, component can be connected or coupled to other assemblies, but component can be " connected " via another component therebetween, " coupling " or " coupled " to other assemblies.

In the following description, it is convenient to omit known correlation function is explained in detail with what is constructed to avoid unnecessarily Obscure theme in the present disclosure.

It in embodiments, for ease of description, can be with for emitting the device of wireless power in wireless charging system To be used with following identical meaning：Wireless power transmitter, wireless power transmission apparatus, transmitting terminal, transmitter, transmitting dress It puts, emitting side, wireless power transmission device, wireless charging device etc..In addition, for ease of description, for being sent out from wireless power The device that injection device receives wireless power can be to use with following identical meaning：Wireless power reception device, wireless power Receiver, receiving terminal, receiving side, reception device, receiver end etc..

In embodiments, wireless charging device can be configured to mat form (pad form), flat form, access point (AP) form, micro base station form, rack form, overhead form, wall hanging form etc., and a transmitter can be by electric power It is transmitted to multiple wireless power reception devices.

As an example, wireless power transmitter can be generally used on desk (desk), desk (table) etc..In addition, with It wireless power transmitter to be developed and applied to the vehicles, wireless power transmitter can be used in the vehicles.Peace Dress wireless power transmitter in a vehicle can be by simply and steadily fixed and protect with wireless power transmitter The form for the platform held provides.

In embodiments, terminal can be used for such as mobile phone, smart phone, laptop computer, digital broadcasting Terminal, personal digital assistant (PDA), portable media player (PMP), navigation, MP3 player, electric toothbrush, electronics mark Label, lighting device, remote controler and float compact electronic devices in.However, present disclosure is without being limited thereto, as long as wherein pacifying Equipped with wireless power reception device to charge to battery, then any mobile equipment all may be used (hereinafter referred to as " equipment ") For use as terminal.Term " terminal " or " equipment " can be used with identical meaning.In another embodiment, wireless power connects Receiving device can be provided in the vehicles, unmanned vehicle, aerial unmanned plane etc..

In embodiments, wireless power receiver can be provided at least one wireless power transmission method, and same When from two or more wireless power transmitters receive wireless power.Here, wireless power transmission method can include electromagnetism At least one of inducing method, EMR electromagnetic resonance method and RF wireless power transmission methods.Particularly, electromagnetic induction method is supported Wireless power reception device can include being based upon wireless charging alliance (WPC) and the electric power of wireless charging technical standard tissue The wireless charging technology of electromagnetic induction method defined in cause alliance (PMA).In addition, support the radio of EMR electromagnetic resonance method Power reception device can include the use of the electricity defined in the wireless power alliance (A4WP) for wireless charging technical standard tissue The wireless charging technology of magnetic resonance method.

In general, in-band communications can be passed through by forming the wireless power transmitter of wireless power system and wireless power receiver Or Bluetooth Low Energy (BLE) communicates to exchange control signal or information each other.Here, pulse duration modulation method, frequency can be used Modulator approach, phase modulating method, amplitude modulation method, amplitude and phase modulating method etc. lead to perform in-band communications or BLE Letter.As an example, wireless power receiver can be preassigned pattern by the on/off switch of the electric current sensed via receiving coil Feedback signal is generated, so as to which various control signals and information are transmitted to wireless power transmitter.By wireless power receiver The information of transmission can include various status informations, including the power strength information received.At this point, wireless power transmitter can To calculate charge efficiency or power transmission efficiency.

With reference to Fig. 1, wireless charging system is commonly configured with：For the wireless power transmitter 10 of wireless output power；With In the wireless power receiver 20 of Rreceive output electric power；And the electronic equipment 30 for the electric power received to be used to supply.

As an example, wireless power transmitter 10 and wireless power receiver 20 can perform use and wireless power transmission The frequency band of the middle operating frequency used equal frequency band exchanges the in-band communications of information.As another example, wireless power is sent out Emitter 10 and wireless power receiver 20 can perform different using the frequency band of the operating frequency from being used in wireless power transmission Separated frequency band exchange the out-of-band communication of information.

As an example, the information exchanged between wireless power transmitter 10 and wireless power receiver 20 can not only wrap The status information on wireless power transmitter 10 and wireless power receiver 20 is included, control information can also be included.It is here, logical Implementation below is crossed, the status information exchanged between wireless power transmitter 10 and wireless power receiver 20 and control are believed Breath will be apparent.

In-band communications and out-of-band communication can provide two-way communication, but present disclosure is without being limited thereto.In another implementation In mode, in-band communications and out-of-band communication can provide one-way communication or half-duplex operation.

As an example, one-way communication can be that wherein wireless power receiver 20 only transmits letter to wireless power transmitter 10 The communication of breath, but present disclosure is without being limited thereto.One-way communication can be wherein wireless power transmitter 10 only to radio Power receiver 20 transmits the communication of information.

In half-duplex operation, the two-way communication between wireless power receiver 20 and wireless power transmitter 10 is possible , but information can be transmitted only by an equipment at any point in time.

Wireless power receiver 20 according to the embodiment of the present disclosure can obtain the various shapes of electronic equipment 30 State information.As an example, the status information of electronic equipment 30 can include the information on currently used amount of power, for knowing The information for the application not performed, on used CPU amount information, on the information of battery charging state, on battery Information of output voltage/electric current etc..However, present disclosure is without being limited thereto, but any information can be included in electronics and set In standby 30 status information, as long as it can obtain from electronic equipment 30 and can be used for wireless power control.

Particularly, wireless power transmitter 10 according to the embodiment of the present disclosure can be to wireless power receiver 20 transmission indicate whether to support the predetermined packet of rapid charge.When checking the wireless power that is couple to wireless power receiver 20 When transmitter 10 supports rapid charge pattern, inspection result can be notified electron equipment 30 by wireless power receiver 20.Electricity Sub- equipment 30 can carry out height by the way that the predetermined display means (for example, liquid crystal display) of electronic device 30 is supplied to show Speed charges.

In addition, the user of electronic equipment 30 can be pressed by the predetermined rapid charge request for selecting to show on the display apparatus Button controls the wireless power transmitter 10 to be operated with rapid charge pattern.In this case, if user selects at a high speed Charge request button, then electronic equipment 30 predetermined rapid charge request signal can be transmitted to wireless power receiver 20.Nothing Line power receiver 20 can generate the charge mode grouping corresponding to the rapid charge request signal received and will charge Mode packet is transmitted to wireless power transmitter 10 so that general low power charge pattern can change into rapid charge pattern.

In embodiments, in the case of any individual request or input of no user, electronic equipment 30 can To be automatically brought into operation based on the communication between wireless power transmitter 10 and wireless power receiver 20 and the result of negotiation and Change into rapid charge pattern.In addition, in the case of any individual request or input of no user, electronic equipment 30 It can be automatically brought into operation simultaneously based on the communication between wireless power transmitter 10 and wireless power receiver 20 and the result of negotiation And change into general low power charge pattern.

As an example, as shown in reference numeral 200a, wireless power receiver 20 can be configured with multiple wireless powers and connect Receiving apparatus, and the multiple wireless power reception device can be couple to a wireless power transmitter 10 to perform wireless charging Electricity.At this point, wireless power transmitter 10 can use time-division method distribution electric power and be output to the allocated electric power described more A wireless power reception device, but present disclosure is without being limited thereto.As another example, wireless power transmitter 10 can make It is distributed electric power with the different frequency bands for distributing to respective wireless electric power reception device and is output to the allocated electric power described more A wireless power reception device.

At this point it is possible to be couple to the wireless power reception device of a wireless power transmission apparatus number can be based on At least one in lower adaptively determines：Amount of power, battery charging state needed for each wireless power reception device, electricity The amount of power and the available power amount of wireless power transmission apparatus consumed in sub- equipment.

As another example, as shown in reference numeral 200b, wireless power transmitter 10 can be configured with multiple radio Power emitter.In this case, wireless power receiver 20 can be couple to the multiple wireless power transmitting dress simultaneously It puts, and electric power is received to perform charging by while from be couple to its wireless power transmission apparatus.At this point, it is couple to wireless The number of the wireless power transmission apparatus of power receiver 20 can be adaptively determined based at least one of the following：Nothing Amount of power and the wireless power hair consumed in amount of power, battery charging state, electronic equipment needed for line power receiver 20 The available power amount of injection device.

As an example, wireless power transmitter can be equipped with, there are three transmitting coils 111,112 and 113.Each emission lines The subregion of circle can be overlapped with another transmitting coil, and wireless power transmitter sequentially exports predetermined sensing signal 117 or 127, for for example being received by each transmitting coil according to the digital ping signa of predetermined order to sense wireless power The presence of device.

As shown in figure 3, wireless power transmitter can be exported by the primary sensing signal indicated by reference numeral 110 Journey carrys out sequentially output sensing signal 117, and identify from wireless power receiver 115 receive signal strength indicator (or Signal strength is grouped) 116 transmitting coil 111 and 112.Then, wireless power transmitter can be by being referred to by reference numeral 120 The secondary signal output procedural order ground output sensing signal shown, is receiving the transmitting coil 111 of signal strength indicator 126 And identification has good electric power transmission efficiency (or charge efficiency) between 112 --- i.e., between transmitting coil and receiving coil Good matching status --- transmitting coil, and control identified transmitting coil so that pass through the emission lines identified Enclose output power, i.e. so that performing wireless charging.

As shown in figure 3, wireless power transmitter is in order to more accurately the reason for performing sensing signal output process twice Identify the receiving coil and which transmitting coil matched well of wireless power receiver.

As indicated by the reference numeral 110 and 120 as Fig. 3, when the first transmitting coil 111 and the second transmitting coil 112 connect When receiving signal strength indicator 116 or 126, wireless power transmitter is based on the first transmitting coil 111 and the second transmitting coil The transmitting coil of each signal strength indicator received 126 selection best match in 112, and using selected Transmitting coil performs wireless charging.

Fig. 4 is the state switching figure for showing the wireless power transmission process defined in WPC.

With reference to Fig. 4, the choice phase 410 can be generally divided into according to the power transmission slave transmitter to receiver of WPC, look into Test stage 420, identification and configuration phase 430 and power transmission stage 440.

Choice phase 410 can be that particular error or particular event are sensed when power transmission is starting or keeps In the case of stage for switching.Here, by being described below, particular error or particular event will be apparent.In addition, it is selecting In stage 410, transmitter, which can monitor, whether there is object on interface surface.It placed if sensed on interface surface pair As then transmitter can be switched to the examination stage 420 (S401).In the choice phase, transmitter can transmit have it is very short The simulation ping signal of pulse, and the variation of the electric current based on transmitting coil is in the effective coverage of interface surface to sense It is no that there are objects.

In the stage 420 is checked, if sensing object, transmitter activation receiver and send for identify receive Device whether be the receiver compatible with WPC numeral examination.In the stage 420 is checked, it is directed to if transmitter is not received by The response signal of numeral examination, such as the signal strength indicator from receiver, then transmitter can again switch to selection Stage 410 (S402).In addition, in the stage 420 is checked, tied if transmitter receives instruction power transmission from receiver Signal, that is, charging completion signal of beam, then transmitter can be switched to the choice phase 410 (S403).

If the examination stage 420 terminates, transmitter can be switched to collect receiver identification information, receiver is matched somebody with somebody Confidence ceases and the identification of status information and configuration phase 430 (S404).

It is identifying in configuration phase 430, is unexpectedly being grouped if received, does not receive desired point in the predetermined time Group (time-out) there are packet transport error or does not have power transmission contract (contract), then transmitter can be switched to choosing Select the stage 410 (S405).

If the identification and configuration of receiver terminate, the electric power that transmitter can be switched to transmit wireless power passes Defeated stage 440 (S406).

In the power transmission stage 440, if receiving unexpected grouping, not receiving desired grouping in the predetermined time (time-out), generation power transmission contract are run counter to or charge and terminate, then transmitter can be switched to the choice phase 410 (S407).

In addition, in the power transmission stage 440, passed when needs reconfigure electric power according to change of state of receiver etc. During defeated contract, transmitter can be switched to identification and configuration phase 430 (S408).

Based on transmitter state and characteristic information and receiver state and characteristic information power transmission can be set to close Together.As an example, transmitter status information can include the maximum on the electric power to be transmitted, the receiver to be supplied is most The information of big quantity etc., and receiver status information can include information on required electric power etc..

Fig. 5 is the state switching figure for showing the wireless power transmission process defined in PMA.

With reference to Fig. 5, according to the power transmission slave transmitter to receiver of PMAC can be generally divided into the stage of awaiting orders 510, Numeral examination stage 520, cognitive phase 530, power transmission stage 540 and charging ending phase 550.

Stage 510 of awaiting orders can be when being carrying out the receiver identification process of power transmission or electric power is being kept to pass The stage switched in the case of particular error or particular event are sensed when defeated.Here, by being described below, particular error or spy Determine event will be apparent.In addition, in the stage of awaiting orders 510, transmitter, which can monitor, whether there is object on charging surface. It placed object on charging surface if sensed or retried if performing RXID, transmitter can be switched to number The examination stage 520 (S501).Here, RXID is allocated to the unique identifier of the receiver of compatible PMA.In the stage of awaiting orders 510, transmitter can send the simulation ping signal with very short pulse, and the variation of the electric current based on transmitting coil It whether there is object in the effective coverage of charging surface to sense.

The transmitter output for being switched to the numeral examination stage 520 is used to identify whether sensed object is compatible The digital ping signa of the receiver of PMA.When by being provided enough from the digital ping signa that receiver exports to receiver During electric power, receiver can will be made a reservation for by being modulated according to PMA communication protocols to received digital ping signa Response signal be sent to transmitter.Here, response signal can include the intensity of the electric power received by instruction receiver Signal strength indicator.In the numeral examination stage 520, if receiving effective response signal, transmitter can switch To cognitive phase 530 (S502).

In the numeral examination stage 520, if being not received by response signal or if identifying that object is not can be simultaneous Hold receiver, that is, foreign bodies detection (FOD) of PMA, then transmitter can be switched to the stage of awaiting orders 510 (S503).It is as an example, different Object (FO) can be the metal object for including coin, key etc..

In cognitive phase 530, when receiver identification process fails or when re-executing receiver identification process When and when receiver identification process not in the given time at the end of, transmitter can be switched to the stage of awaiting orders 510 (S504).

If transmitter successfully completes receiver identification, transmitter can be by being switched to electric power from cognitive phase 530 The transmission stage 540 (S505) and start to charge up.

In the power transmission stage 540, when not receiving desired signal in preset time (time-out), when detecting FO When or when transmitting coil voltage be more than predetermined reference value when, transmitter can be switched to the stage of awaiting orders 510 (S506).

In addition, in the power transmission stage 540, when the temperature by temperature sensor in the transmitter is set to sense is more than During predetermined reference value, transmitter can be switched to charging ending phase 550 (S507).

It in charging ending phase 550, is removed if checking receiver from charging surface, transmitter can be cut Change to the stage of awaiting orders 510 (S509).

In addition, when the temperature measured after a predetermined time under overtemperature state be reduced to reference value or it is lower when, hair Emitter can be switched to the numeral examination stage 520 (S510) from charging ending phase 550.

In numeral examination stage 520 or power transmission stage 540, terminate (EOC) if receiving charging from receiver Request, then transmitter switches to charging ending phase 550 (S508 and S511).

With reference to Fig. 6, wireless power transmitter 600 usually may be configured to include power conversion unit 610, power transmission Unit 620, communication unit 630, controller 640, sensing unit 650.The above-mentioned component of wireless power transmitter 600 is not necessarily Therefore required component, may be configured to include component of the quantity more than or less than the quantity of above-mentioned component.

As shown in fig. 6, power conversion unit 610 can perform by from the electrical power conversion that power supply unit 660 is supplied into The function of the electric power of predetermined strength.

For this purpose, power conversion unit 610 may be configured to include DC/DC converters 611 and amplifier 612.

DC/DC converters 611 can perform the DC that will be supplied according to the control signal of controller 640 from power supply unit 660 Electrical power conversion is into having the function of the DC electric power of certain strength.

At this point, sensing unit 650 can with the voltage/current of the DC electric power after measures conversion and by measured voltage/ Electric current is supplied to controller 640.In addition, in order to determine whether to occur overtemperature, sensing unit 650 can measure wireless power transmitting The internal temperature of device 600 and measurement result is supplied to controller 640.As an example, controller 640 can adaptively in The electric power supplied to amplifier 612 is interrupted in the supply of the disconnected electric power from power supply unit 660.For this purpose, it can turn in electric power It changes further to set at the one side of unit 610 and is used for interruption from the electric power of the supply of power supply unit 660 or interrupts to amplifier 612 The predetermined power interrupt circuit of the electric power of supply.

Amplifier 612 can adjust the intensity of the transformed electric power of DC/DC according to the control signal of controller 640.Make For example, controller 640 can be received by communication unit 630 wireless power receiver power receiver status information or/and Power controlling signal, and put based on the power receiver status information received or/and power controlling signal to dynamically adjust The amplification factor of big device 612.As an example, power receiver status information can include on the strong of the voltage exported from amplifier The information of degree, information of intensity on the electric current for being applied to receiving coil etc., but it is without being limited thereto originally to open public content.Electric power control Signal processed can increase the signal of electric power, for signal of request reduction electric power etc. including being used for request.

Electric power transfer unit 620 may be configured to include multiplexer 621 and transmitting coil 622.In addition, power transmission list Member 620 can also include generating the carrier generator (not shown) of the particular job frequency for power transmission.

Carrier generator can generate specific frequency, for that will pass through the output DC for the amplifier 612 that multiplexer 621 transmits Electrical power conversion is into the AC electric power with the specific frequency.It is being multiplexed above, showing by the AC signals of carrier generator generation The output of device 621 is mixed to produce AC electric power, but this is only a kind of embodiment.In another embodiment, AC signals can be mixed in the front end of amplifier 612 or rear end.

In one embodiment, the frequency for being transmitted to the AC electric power of transmitting coil can be different from each other.Another real It applies in mode, the preset frequency controller with the LC resonance characteristic for differently controlling each transmitting coil can be used To be arranged differently than the resonant frequency of transmitting coil.

However, when the resonant frequency generated from multiple transmitting coils is different from each other, it is necessary to for controlling different resonance The individual frequency controller of frequency, and therefore can increase the size of wireless power transmitter.Therefore, in a kind of embodiment In, with reference to Figure 41 to Figure 43 descriptions identical resonance will be also used even if when wireless power transmitter includes multiple transmitting coils Frequency transmits the situation of electric power.

As shown in fig. 6, electric power transfer unit 620 may be configured to include controlling the to be communicated of amplifier 612 It is multiplexer of first transmitting coil to the output power of the n-th transmitting coil to transmitting coil and multiple transmitting coils 622 621。

When being coupled with multiple wireless power receivers, controller 640 according to the embodiment of the present disclosure can be with Electric power is transmitted by the time division multiplexing of each transmitting coil.For example, when by three different transmitting coils, (i.e. first emits Coil is to the 3rd transmitting coil) three wireless power receiver (i.e. the first radio of wireless power transmitter 600 are identified respectively Power receiver is to the 3rd wireless power receiver) when, controller 640 can control multiplexer 621 so that electric power can pass through Particular transmission coil is output in particular time-slot.At this point it is possible to it is controlled according to the length of the time slot distributed to each transmitting coil System is transmitted to the amount of the electric power of corresponding power receiver, but this is only a kind of embodiment.In another embodiment, It can be controlled by controlling the amplification factor of amplifier 612 during the time slot distributed to each transmitting coil for each nothing The output power of line power receiver.

Controller 640 can control multiplexer 621 so that sensing signal passes through during primary sensing signal output process The first to the n-th transmitting coil 622 sequentially exports.At this point, controller 640 can use the identification of timer 655 to transmit sensing The time point of signal.If transmit sensing signal time point reach, controller 640 can control multiplexer 621 so that Obtaining sensing signal can be exported by corresponding transmitting coil.As an example, timer 655 can be during the transmission stage be checked In scheduled time slot particular event signal is exported to controller 640.If sensing corresponding event signal, controller 640 Multiplexer 621 can be controlled so that numeral examination can be exported by corresponding transmitting coil.

It is used in addition, controller 640 can be received during primary sensing signal output process by any one transmitting coil In identify whether from demodulating unit 632 receive signal strength indicator predetermined transmitting coil identifier and receive The signal strength indicator received by corresponding transmitting coil.Then, in secondary sensing signal output program, controller 640 can control multiplexer 621 so that sensing signal can be only by being connect during primary sensing signal output process by it Receive the transmitting coil output of signal strength indicator.As another example, pass through when during primary sensing signal output process When the quantity of the transmitting coil of its received signal strength indicator symbol is multiple, controller 640 can will have most by its reception The transmitting coil for the signal strength indicator being worth greatly is determined as exporting sense first by it during secondary sensing signal exports The transmitting coil of signal is surveyed, and based on identified output control multiplexer 621.

Modulation unit 631 can be modulated the control signal generated by controller 640 and believe the control of modulation Number it is sent to multiplexer 621.Here, shift keying modulation method, graceful can be included for the modulator approach of modulation control signal Che Site code modulating methods, phase-shift keying (PSK) modulator approach, pulse-width modulation method, differentially bi phase modulator approach etc., still Present disclosure is without being limited thereto.

If sensed through transmitting coil received signal, demodulating unit 632 can to the signal that is sensed into Row demodulates and the signal of demodulation is sent to controller 640.Here, demodulated signal can include signal strength indicator, use In controlling error correction (EC) indicator of electric power during wireless power transmission, charge and terminate (EOC) indicator, overvoltage/excessively electric Stream/overtemperature indicator etc..However, present disclosure is without being limited thereto, demodulated signal can include identifying that wireless power receives The various status informations of the state of device.

In addition, which transmitting coil demodulating unit 632, which can be identified from, receives demodulated signal, and to controller 640 The corresponding predetermined transmitting coil identifier of transmitting coil with being identified is provided.

As an example, wireless power transmitter 600 can obtain signal strength indicator by following in-band communications：It uses The identical frequency used in wireless power transmission performs the communication with wireless power receiver.

In addition, wireless power transmitter 600 can not only use transmitting coil 622 to export wireless power, but also can be with Various information are exchanged with wireless power receiver by transmitting coil 622.As another example, wireless power transmitter 600 can To be additionally provided with and each transmitting coil 622 (that is, the first transmitting coil to the n-th transmitting coil) corresponding individual line Circle, and perform the in-band communications with wireless power receiver using these individual coils.

In figure 6, show that wireless power transmitter 600 and wireless power receiver perform in-band communications as example Situation.However, this is only a kind of embodiment, wireless power transmitter 600 and wireless power receiver can by with The different frequency band of the frequency band that uses performs short distance two-way communication in wireless power signal transmission.For example, short distance two-way communication can be with It is any one of low-power Bluetooth communication, RFID communication, UWB communications and Zigbee communication.

Specifically, wireless power transmitter 600 according to the embodiment of the present disclosure can connect according to wireless power The request for receiving device adaptively provides rapid charge pattern and general low power charge pattern.

When supporting rapid charge pattern, wireless power transmitter 600 can export preassigned pattern signal (for the ease of Description, hereinafter referred to as the first grouping).If receiving the first grouping, wireless power receiver can identify coupling Wireless power transmitter 600 to wireless power receiver can carry out rapid charge.

Specifically, when needing rapid charge, wireless power receiver can will be for asking predetermined the of rapid charge One respond packet is sent to wireless power transmitter 600.

Specifically, if having passed through the predetermined time after the first respond packet is received, wireless power transmitter 600 It can start rapid charge by the way that its charge mode is automatically changed to rapid charge pattern.In addition, if receiving Wireless charging is in stable condition after one respond packet, then wireless power transmitter 600 can be by the way that its pattern be automatically changed Start rapid charge to rapid charge pattern.In addition, if receive predetermined control after the first respond packet is received Erroneous packet, then wireless power transmitter 600 can be started by the way that its charge mode is automatically changed to rapid charge pattern Rapid charge.

As an example, when wireless power transmitter 600 is switched to power transmission stage 440 or 550 of Fig. 4 or Fig. 5, nothing The controller 640 of line power transmitter 600 can control the first grouping to be exported by transmitting coil 622, but this is only It is a kind of embodiment.It in another embodiment, can be in the identification of Fig. 4 and the cognitive phase of configuration phase 430 or Fig. 5 The first grouping of output in 530.

In another embodiment, for identify whether support rapid charge information can be coded in from radio In the digital ping signa that power transmitter 600 exports.

If needing rapid charge at any time point in power transmission stage, wireless power receiver can be to nothing Line power transmitter 600 transmits the predetermined charge mode grouping that charge mode is arranged to rapid charge.It here, will be with reference to Figure 13 The configuration of charge mode grouping is more fully described to Figure 17.It will be apparent that when charge mode becomes rapid charge pattern, Wireless power transmitter 600 and wireless power receiver can control inside to be operable so that can be corresponding with rapid charge pattern Ground exports and receives electric power.As an example, when charge mode becomes rapid charge pattern from general low power charge pattern, it can With change and set overvoltage determine benchmark, overtemperature determine benchmark, low-voltage/high voltage determine benchmark, optimum voltage level, with And such as value of Electric control offset.

As an example, when charge mode becomes rapid charge pattern from general low power charge pattern, can will be used for Determine that the critical voltage of overvoltage is arranged to high so that rapid charge can be carried out.As another example, can by consider by Caused by rapid charge temperature rise and will be used to determine whether occur overtemperature critical-temperature be set to it is higher.As another Example can will represent that the Electric control deviant of the controlled minimum levels of electric power is arranged to compare in wireless power transmitter The big value of value in general low power charge pattern, to converge quickly to expectation target electric power water under rapid charge pattern It is flat.

With reference to Fig. 7, wireless power receiver 700 may be configured to include receiving coil 710, rectifier 720, DC/DC Converter 730, load 740, sensing unit 750, communication unit 760 and master controller 770.Here, communication unit 760 can be by It is configured to include at least one of demodulating unit 761 and modulation unit 762.

In fig. 7 it is shown that wireless power receiver 700 exchanges letter by in-band communications with wireless power transmitter 600 Breath, but this is only a kind of embodiment.In another embodiment, communication unit 760 can by in radio The frequency band that uses different frequency band provides short distance two-way communication in force signal transmission.

The AC electric power received by receiving coil 710 can be transferred to rectifier 720.Rectifier 720 can be by AC electricity Power is converted into DC electric power and transformed DC electric power is transmitted to DC/DC converters 730.DC/DC converters 730 can will be from The intensity-conversion for the DC electric power that rectifier 720 exports, then will be with certain strength into 740 required certain strengths of load DC electric power is transmitted to load 740.In addition, receiving coil 710 may be configured to include multiple receiving coil (not shown), i.e. First receiving coil to the n-th receiving coil.In one embodiment, it is transmitted to the AC electric power of each receiving coil (not shown) Frequency can be different from each other.In another embodiment, can use with the LC for differently controlling each receiving coil The preset frequency controller of the function of resonance characteristic is arranged differently than the resonant frequency of receiving coil.

Sensing unit 750 can measure the intensity of the DC electric power exported from rectifier 720, and measured intensity is provided To master controller 770.In addition, sensing unit 750 can measure the electric current that receiving coil 710 is applied to when receiving wireless power Intensity, and measured result is supplied to master controller 770.In addition, sensing unit 750 can measure wireless power reception The internal temperature of device 700, and measured temperature is supplied to master controller 770.

As an example, master controller 770 can by the measured intensity of the DC electric power that will be exported from rectifier 720 with Predetermined reference value is compared to determine whether overvoltage occurs.When overvoltage occurs, master controller 770 can generate notice The predetermined packet of overvoltage has occurred as determined by as a result, and the grouping generated is transmitted to modulation unit 762. This, the signal modulated by modulation unit 762 can be transferred to wirelessly by receiving coil 710 or different coil (not shown) Power transmitter.In addition, when the intensity of the DC electric power exported from rectifier 720 is equal to or more than predetermined reference value, main control Device 770 can determine to have been received by sensing signal.When receiving sensing signal, master controller 770 can be controlled and passed through The corresponding signal strength indicator of the sensing signal to be transmitted to wireless power transmitter of modulation unit 762.Show as another Example, demodulating unit 761 can be by the AC electric power signals between receiving coil 710 and rectifier 720 or defeated from rectifier 720 The DC electric power signal gone out is demodulated to identify whether to have been received by sensing signal, and then provides the result identified To master controller 770.At this point, master controller 770 can control it is corresponding with the sensing signal to be transmitted by modulation unit 762 Signal strength indicator.

In addition, master controller 770 can be to determine wireless power transmitter based on the information demodulated by demodulating unit 760 No is the wireless power transmitter that can carry out rapid charge.

In addition, work as the predetermined rapid charge request signal for receiving to ask rapid charge from the electronic device 30 of Fig. 1 When, master controller 770 can generate charge mode grouping corresponding with the rapid charge request signal received, and will give birth to Into charge mode grouping be transmitted to modulation unit 762.Here, can by predesignated subscriber's interface be based on custom menu select with Receive the rapid charge request signal from electronic device.

In addition, rapid charge pattern is supported with the wireless power transmitter of the coupling of wireless power receiver 700 when checking When, master controller 770 can be based on battery allowance and ask rapid charge or control radio from trend wireless power transmitter Power transmitter stops rapid charge and its charge mode is become general low power charge pattern.

In addition, master controller 770 can monitor the electronic device institute during charging with general low power charge pattern in real time The electric power of consumption.When the electric power that electronic device is consumed is equal to or more than predetermined reference value, master controller 770 can generate use Become the predetermined charge mode grouping of rapid charge pattern in request, and the charge mode generated grouping is sent to modulation Unit 762.

In addition, master controller 770 can be carried out by the internal temperature that will be measured by sensing unit 750 with predetermined reference value Compare to determine whether overtemperature has occurred.When overtemperature occurs during rapid charge, master controller 770 can generate charging mould Formula is grouped and transmits generated charge mode grouping so that its charge mode is become general low electricity by wireless power transmitter Power charge mode.

In addition, master controller 770 can be based on battery charging rate, internal temperature, the intensity of rectifier output voltage, electricity At least one of duty cycle and custom menu selection for the CPU being equipped in sub-device determines the need for changing for charge mode Become.As identified as a result, change if necessary to charge mode, then master controller 770 can be generated including to be changed The charge mode grouping of charge mode value, and the charge mode generated grouping is transmitted to wireless power transmitter.

Fig. 8 is shown according to a kind of modulation and demodulation method of the wireless power signal of embodiment in the present disclosure Figure.

As shown in the reference numeral 810 of Fig. 8, wireless power transmitter 10 and wireless power receiver 20 can be based on having The internal clock signal of same period is encoded or decoded to transmission objectives grouping.

Hereinafter, the coding method of transmission objectives grouping will be described in detail referring to figs. 1 to Fig. 8.

With reference to Fig. 1, when wireless power transmitter 10 or wireless power receiver 20 do not transmit any specific cluster, such as scheme Wireless power signal shown in 1 reference numeral 41 can be the unmodulated AC signals with specific frequency.On the other hand, when It is wireless as shown in the reference numeral 42 of Fig. 2 when wireless power transmitter 10 or wireless power receiver 20 transmit specific cluster Electric power signal can be the AC signals modulated using specific modulation method.It is modulated as an example, modulator approach can include amplitude Method, frequency modulating method, frequency and amplitude modulation approach, phase modulating method etc., but present disclosure is without being limited thereto.

As represented by reference numeral 820, differentially bi phase coding can be applied to by wireless power transmitter 10 or wireless The binary data for the grouping that power receiver 20 generates.Specifically, differentially bi phase coding has the transformation of two next states with logarithm It is encoded according to position 1, and changes to encode data bit 0 with a next state.That is, data bit 1 can be compiled Code is into the rising edge and trailing edge for so that the transformation between state HI and state LO is happened at clock signal, and data bit 0 can be with It is encoded into so that the transformation between state HI and state LO is happened at the rising edge of clock signal.

As represented by reference numeral 830, byte code technology can be applied to encoded binary data.Referring to the drawings mark Note 830, byte code technology according to the embodiment of the present disclosure can will be used to identify that the coding binary ratio of 8 Spy stream beginning and end start bit and stop bits and for detect whether mistake has occurred in corresponding bits stream (byte) Parity check bit is inserted into the method in corresponding bits stream by mistake.

Fig. 9 is the figure for showing packet format according to the embodiment of the present disclosure.

With reference to Fig. 9, what is used in the information exchange between wireless power transmitter 10 and wireless power receiver 20 divides Group format 900 may be configured to include following field：For obtaining the synchronization of the modulation of respective packets and identifying corresponding divide The lead code 910 of the accurate start bit of group, the header 920 of the type for the message being included in for mark in respective packets, use In the message 930 of the content (or payload) of transmission respective packets and for identifying in respective packets whether mistake has occurred Verification and 940 by mistake.

Terminate to identify the message being included in respective packets based on the value of header 920 as shown in figure 9, grouping receives 930 size.

Furthermore it is possible to define header 920, and the one of header 920 for each stage of wireless power transmission process A little values can be identical in different phase, but can be defined as different types of message.As an example, with reference to Fig. 9, with The corresponding header value of end power transmission in examination stage and header value corresponding with the end power transmission in power transmission stage It can be identical with 0x02.

Message 930 includes will be in the data for sending transmission at end of respective packets.As an example, it is included in message 930 Field in data can be report, request or response, but present disclosure is without being limited thereto.

In another embodiment, packet format 900 can also include at least one of the following：Pass through it for identifying It transmits the transmission end of identification information of the transmission end of respective packets and the reception knot of respective packets is received by it for identifying The reception end of identification information of beam.Here, IP address letter can be included by sending end of identification information and receiving end of identification information Breath, mac address information, product identification information etc..However, present disclosure is without being limited thereto, but any information can include Send end of identification information and receive end of identification information in, as long as can be distinguished in wireless charging system reception terminate and Transmission terminates.

In another embodiment, when respective packets will be received by multiple devices, packet format 900 can also include For identifying correspondingly received group of predetermined group of identification information.

Figure 10 is to show that wireless power receiving device according to the embodiment of the present disclosure can be in the examination stage The figure of the type of the grouping of middle transmission.

As shown in Figure 10, wireless power receiving device transmission signal strength can be grouped or terminate electricity in the examination stage Power transmission packe.

With reference to the reference numeral 1001 of Figure 10, the message lattice of signal strength grouping according to the embodiment of the present disclosure Formula can be configured using the signal strength values with 1 byte-sized.Signal strength values can indicate transmit coil with receiving line Coupling degree between circle, and can be based in the numeral examination stage rectifier output voltage, in the output disconnect close The value of the calculating such as the open-circuit voltage, the intensity of received electric power that are measured in.Signal strength values can have from minimum value 0 To the scope of maximum 255, and there is value when the actual measured value U of particular variables is equal to the maximum Umax of relevant variable 255。

As an example, signal strength values can be calculated as U/Umax*256.

With reference to the reference numeral 1002 of Figure 10, what ends power transmission according to the embodiment of the present disclosure was grouped disappears Breath form can be prepared using the end power transmission code with 1 byte-sized.

Wireless power receiving device request wireless power transmitter the reason for terminating power transmission can include charging complete, Internal fault, overtemperature, overcurrent, battery failures, reconfigure, without response, noise current etc. overvoltage, but in the disclosure Hold without being limited thereto.It can correspond to each new end power transmission reason and in addition define end power transmission code.

When the charging of the battery of receiver has been completed, charging complete can be used.It is operated when in the inside of receiver In when sensing software or logic error, internal fault can be used.

When each in the temperature value/voltage value/current value measured in the receiver is more than critical value, can use Overtemperature/overvoltage/overcurrent.

When determining to have occurred and that problem in the battery of receiver, battery failures can be used.

When needing to reconfigure for power transmission condition, can use reconfigure.

When determining transmitter to controlling the response of erroneous packet, i.e. when increaseing or decreasing abnormal of power strength can be with Use no response.

It is different from overcurrent, when the noise current value measured in the receiver is made an uproar as what is generated in the switching of inverter When sound is more than the critical value of definition, noise current can be used.

Figure 11 is the figure for the message format for showing mark grouping according to the embodiment of the present disclosure.

With reference to Figure 11, the message format for identifying grouping may be configured to include version information field, manufacturer's information word Section, extension indicator field and basic equipment identification information field.

Standard update version information applied to respective wireless electric power receiving device can be recorded in version information field In.

Predetermined identification code for identifying the manufacturer of manufacture respective wireless electric power receiving device can be recorded in manufacture In business's information field.

Extension indicator field can include identifying whether there is the extension mark for including expansion equipment identification information The indicator of grouping.As an example, if the value of extension indicator is 0, this represents that there is no any extension mark datas point Group.If the value for extending indicator is 1, this is represented after mark grouping in the presence of extension mark grouping.

Referring to the drawings mark 1101 and 1102, if the value of extension indicator is 0, respective wireless electric power receiver is set Standby identifier can be configured using the combination of manufacturer's information and basic equipment identification information.On the other hand, if extension refers to The value for showing symbol is 1, then the device identifier of respective wireless electric power receiver can use manufacturer's information, basic equipment mark letter The combination with expansion equipment identification information is ceased to configure.

Figure 12 is configuration packet and the Electric control postponement (hold- shown according to the embodiment of the present disclosure Off) the figure of the message format of grouping.

As shown in the reference numeral 1201 of Figure 12, the message format of configuration packet can have the length of 5 bytes, and by It is configured to include power levels field, maximum power field, Electric control field, count area, window size field, window inclined Move field etc..

Distributing to the power levels of respective wireless electric power receiver can be recorded in power levels field.

The intensity of the maximum power provided at the rectifier output end of wireless power receiver can be recorded in maximum In power field.

It, can will be in the rectification of wireless power receiver as an example, when power levels are a and maximum power is b The maximum power amount Pmax that device output provides is calculated as (b/2) * 10a.

Electric control field can serve to indicate that the Electric control performed under which kind of algorithm in wireless power transmitter.Make For example, when the value of Electric control field is 0, then this is represented using the Electric control algorithm defined in standard.If electric power The value of control field is 1, then this expression performs Electric control under the algorithm defined by manufacturer.

Count area can be used for record will be in the multiple optional configuration packets for identifying with being transmitted in configuration phase.

Window size field can be used for record for calculating the window size of average received electric power.As an example, window Size may be greater than 0 positive integer, and in units of 4ms.

For identifying from for calculating time point that the window of the electric power of average received terminates to next electricity received The information of the time at the time point that the transmission of power grouping starts can be recorded in window offset field.As an example, window Offset may be greater than 0 positive integer, and in units of 4ms.

Referring to the drawings mark 1202, the message format that Electric control postpones grouping may be configured to include Electric control to push away Slow time T_delay.Multiple Electric controls can be transmitted during identifying with configuration phase and postpone grouping.When Electric control is postponed Between T_delay can have predetermined power control postpone minimum time T_min (5ms) with Electric control postpone maximum time T_ Value between max (205ms).Wireless power sending device can be used in the electric power for identifying with being eventually received in configuration phase Control postpones the Electric control retardation time of grouping to perform Electric control.In addition, it is not connect when in identification and configuration phase When receiving any Electric control postponement grouping, wireless power sending device can use T_min as T_delay.

Electric control retardation time can represent to carry out actual electric power control after newest control erroneous packet is received Wireless power sending device was awaited orders and without the time of Electric control before system.

Figure 13 is the charge mode for being used to that charge mode to be asked to change shown according to the embodiment of the present disclosure The figure of the structure of grouping.

With reference to Figure 13, any value in undefined value in the packet header value defined with current wireless charging electric standard can For use as the header value of charge mode grouping.As an example, as shown in figure 9, the header value that can be grouped charge mode defines For 0x18.However, this is only a kind of embodiment, and the header value of charge mode grouping is not necessarily above-mentioned value.

Message size corresponding to header value 0x18 can be 1 byte.

It can be recorded on the charge mode information to be changed in the message field of charge mode grouping.As showing Example referring to the drawings mark 1350, asks to become rapid charge while just being performed and being charged with general low power charge pattern During pattern, 0xff is recorded in the message field that wireless power receiver can be grouped in charge mode, and sends charge mode Grouping.On the other hand, when request becomes general low power charge pattern while just with the execution charging of rapid charge pattern, 0x00 is recorded in the message field that wireless power receiver can be grouped in charge mode, and sends charge mode grouping.By The example that reference numeral 1350 indicates is only used for helping to understand present disclosure, and not necessarily records the value of message as described above.

Figure 14 is the charging mould for being used to that charge mode to be asked to change shown according to another embodiment in the present disclosure The figure of the structure of formula grouping.

As shown in figure 14, the message field of charge mode grouping may be configured to include charge mode 1431 and required electricity Power 1432.Herein, required electric power 1432 can be the intensity of the initial electrical needed when changing to corresponding charge mode.

The size of the message of charge mode grouping can be 1 byte.Some positions in 1 byte can be used for charging Pattern 1431, and other positions in 1 byte can be used for required electric power.As an example, b7 to b4 can be used to deliver Charge mode 1431, and b3 to b0 can be used to deliver required electric power 1432.In this case, 0x00 to 0x0f may be used as For asking to change over the value of general low power charge pattern from the first charge mode, that is, rapid charge pattern, and 0x10 is extremely 0x1f may be used as asking the value for changing over rapid charge pattern from the i.e. general low power charge pattern of the second charge mode. Above-mentioned example is only embodiment, and the configuration and definition of message field can change according to the realization of those skilled in the art Become.

Figure 15 is the charging mould for being used to that charge mode to be asked to change shown according to another embodiment in the present disclosure The figure of the structure of formula grouping.

As shown in figure 15, the message field of charge mode grouping may be configured to include charge mode 1531 and charging mould Formula changes the waiting time 1532.Herein, the charge mode change waiting time 1532 can refer to the following time：Emit in wireless power Device is received after corresponding charge mode is grouped until the charge mode of wireless power transmitter is changed, wireless power The time that transmitter is awaited orders.As an example, the value that charge mode changes the waiting time 1532 is 0, this can represent charge mode Change immediately.That is, this can represent with charge mode change the waiting time 1532 it is elongated, change charge mode needed for when Between it is elongated.Wireless charging system according to the embodiment of the present disclosure can use charge mode to change the waiting time 1532 It is synchronous between wireless power transmitter and wireless power receiver charge mode to be made to change the time.

As an example, as indicated by reference numeral 1550, the b7 as the most significant bit (MSB) in message field can The position for the charge mode to be changed is identified to be.Other b6 to b0 can be used for charge mode is set to change the waiting time 1532.In this case, 0x00 to 0x7f may be used as asking to change over from the i.e. rapid charge pattern of the first charge mode The value of general low power charge pattern, and 0x80 to 0xff may be used as asking from the i.e. general low electricity of the second charge mode Power charge mode changes over the value of rapid charge pattern.Above-mentioned example is only embodiment, and the configuration of message field and fixed Justice can change according to the realization of those skilled in the art.

Figure 16 is the charging mould for being used to that charge mode to be asked to change shown according to another embodiment in the present disclosure The figure of the structure of formula grouping.

As shown in figure 16, the message field of charge mode grouping may be configured to include charge mode 1631 and charging mould Formula changes operating frequency 1632.Herein, charge mode changes operating frequency 1632 and also refers to as following preset frequency Operating frequency：The charge mode of wireless power transmitter is changed over into rapid charge when receiving the grouping of corresponding charge mode After pattern, wireless power transmitter generates AC signals with the preset frequency.In addition, charge mode changes operating frequency 1632 can be default.That is, wireless power transmitter can be under rapid charge pattern with default operating frequency 1632 To generate AC signals.As an example, it can be that user is stored in memory and (does not show in advance that charge mode, which changes operating frequency 1632, Go out) in operating frequency.In this case, it can steadily be given birth to as test result that charge mode, which changes operating frequency 1632, Into the operating frequency of AC signals.More specifically, it can be 120kHz that charge mode, which changes operating frequency 1632,.Show as another Example, charge mode changes the operating frequency that operating frequency 1632 can be stored in memory (not shown) etc., in wireless charging Electricity stably generates AC signals under rapid charge pattern before starting again at the operating frequency.

As an example, as indicated by reference numeral 1650, the b7 as the most significant bit (MSB) in message field can The position for the charge mode to be changed is identified to be.Other b6 to b0 can be used for charge mode is set to change operating frequency 1632.In this case, 0x00 to 0x7f may be used as asking to change over from the i.e. rapid charge pattern of the first charge mode The value of general low power charge pattern, and 0x80 to 0xff may be used as asking from the i.e. general low electricity of the second charge mode Power charge mode changes over the value of rapid charge pattern.Above-mentioned example is only embodiment, and the configuration of message field and fixed Justice can change according to the realization of those skilled in the art.

Figure 17 is the charging mould for being used to that charge mode to be asked to change shown according to another embodiment in the present disclosure The figure of the structure of formula grouping.

As shown in figure 17, the message field of charge mode grouping may be configured to include charge mode 1731 and charging mould Formula changes stability contorting erroneous packet (CEP) count value 1732.Herein, it is the CEP with control error value 0 to stablize CEP groupings. Stablize CEP groupings to may be to be reduced or increased in the state of the output power of wireless power transmission apparatus, and this It will be described in further detail below.It can be following count value that charge mode, which changes and stablizes CEP count values 1732,：When After wireless power transmitter receives the grouping of corresponding charge mode wireless power transmitter continuously receive predetermined number or During more stable CEP, the charge mode of wireless power transmitter is changed according to the count value.That is, charge mode changes CEP count values 1732 are stabilized to also refer to determine the count value that wireless power transmitter stably generates AC signals.As Example, when it is 3 that charge mode, which changes stable CEP count values 1732, this can represent continuously to receive when wireless power transmitter It is changed to charge mode during three or more CEP.That is, this can represent to stablize CEP count values when charge mode changes 1732 will continuously receive the stabilization CEP of greater number to change charge mode when becoming larger.

As an example, as indicated by reference numeral 1750, the b7 as the most significant bit (MSB) in message field can The position for the charge mode to be changed is identified to be.Other b6 to b0 can be used for charge mode is set to change stable CEP Count value 1732.In this case, 0x00 to 0x7f may be used as asking from the first charge mode i.e. rapid charge pattern Change to the value of general low power charge pattern, and 0x80 to 0xff may be used as asking from the second charge mode i.e. one As low power charge pattern change over the value of rapid charge pattern.Above-mentioned example is only embodiment, and message field is matched somebody with somebody Putting and defining can change according to the realization of those skilled in the art.

Figure 18 is to show that wireless power reception device according to the embodiment of the present disclosure can be in power transmission rank The various groupings transmitted in section and its figure of message format.

With reference to Figure 18, the grouping that radio receiver can transmit in the power transmission stage can include control mistake point Group terminates power transmission grouping, receives electric power grouping, charged state grouping and the grouping limited for each manufacturer Deng.

Reference numeral 1801 is indicated with the message format of the control erroneous packet of the control error value configuration of 1 byte.This Place, control error value can be the integer values of scope from -128 to+127.If it is negative, wireless power transmitting to control error value The output power of device can reduce.If error value is controlled as just, the output power of wireless power transmission apparatus can increase Add.If it is 0 to control error value, the output power of wireless power transmission apparatus can not increase or not reduce.Particularly, The control erroneous packet that error value is controlled to be 0 can be referred to as stability contorting erroneous packet.

What the end power transmission that reference numeral 1802 indicates to be configured with the end power transmission code of 1 byte was grouped Message format.

Reference numeral 1803 is indicated with the message format for receiving electric power grouping for receiving power value configuration of 1 byte.This Place receives power value and can correspond to the averaging rectifier calculated in predetermined portions reception power value.Amount of power is received in advance It can be calculated based on maximum power and power class, the maximum power and power class are included in configuration packet 1201 In.It can be by (receiving power value/128) * (maximum power/2) * (power class 10) as an example, receiving amount of power in advance To calculate.

Reference numeral 1804 indicates the message format being grouped with the charged state of state-of-charge value configuration.State-of-charge value can To refer to the battery charge of wireless power reception device.As an example, state-of-charge value 0 can represent complete discharge condition, State-of-charge value 50 can represent that 50% charged state and state-of-charge value 100 can represent fully charged state.When wireless When power receiving system is including rechargeable battery or when wireless power reception device does not provide charging status information, charging shape State value can be arranged to 0xff.

With reference to Figure 19, the power transmission stage 440 of Fig. 4 or the power transmission stage 540 of Fig. 5 can include the first charging mould 1910 and second charge mode 1920 of formula performs general low power charge, in the second charging mould in the first charge mode 1910 times 1920 times execution rapid charges of formula.

If meeting predetermined condition, the first charge mode 1910 and the second charge mode 1920 can change to each other. As an example, when the change received while the 1910 times execution of the first charge mode are charged to the second charge mode 1920 please When asking, wireless power receiver can be by being sent to nothing by the predetermined packet for being used to ask to change over the second charge mode 1920 Line power transmitter changes charge mode.As another example, when while the 1920 times execution of the second charge mode are charged When battery charge reaches predetermined reference value, wireless power receiver can will change over the pre- of the first charge mode for request Fixed grouping is sent to wireless power transmitter.

In another embodiment, wireless power transmitter can be to multiple wireless power receiver output powers.At this In the case of, when wireless power receiver is newly coupled to wireless power transmitter or when wireless power transmitter and existing radio When the coupling of power receiver is released from, the electric power re-allocation process of the wireless power receiver to currently coupling can be performed. It redistributes as electric power and is filled at a high speed as a result, ought no longer be provided to the wireless power receiver just to charge under the second charge mode When electric, wireless power transmitter can will change over the pre- of the first charge mode 1910 for request from the second charge mode 1920 Fixed grouping is sent to corresponding wireless power receiver.

In the above-described embodiment, charge mode is divided into the first charge mode 1910 and as an example, showing The situation of two charge modes 1920.However, this is only embodiment, and it can in addition limit new charge mode.As showing Example, can will divide for the second charge mode 1920 of rapid charge for middle electric power rapid charge pattern (not shown) and high electric power Rapid charge pattern (not shown).For example, middle electric power rapid charge pattern (not shown) can export the mean power of 9W.High electricity Power rapid charge pattern (not shown) can export the mean power of 15W.Present disclosure is without being limited thereto, and can be by middle electricity Power rapid charge pattern (not shown) and high electric power rapid charge pattern (not shown) are defined to other meanings.

In embodiments, can by the cognitive phase 530 of the identification of Fig. 4 and configuration phase 430 or Fig. 5 State information exchange is carried out between wireless power transmitter and wireless power receiver or consults to determine initial charge pattern.

As an example, in the cognitive phase 530 of the identification of Fig. 4 and configuration phase 430 or Fig. 5, wireless power transmitting Device can transmit to identify whether wireless power receiver is the device that can support rapid charge to wireless power receiver Predetermined information.At this point, when wireless power receiver is can to support the device of rapid charge and with equal to or less than pre- During the battery charge of definite value, wireless power receiver can will be for asking the predetermined packet of rapid charge to be sent to radio Power transmitter.If wireless power transmitter properly enters the power transmission stage, wireless power transmitter can pass through root Charge mode is changed over into rapid charge pattern to perform wireless charging according to the request of wireless power receiver.

In another embodiment, initial charge pattern can be determined in the power transmission stage.If it as an example, connects Receiving the control erroneous packet that the grouping of initial electrical control data for example limits in WPC, (but present disclosure is not limited to This), then wireless power transmitter can enter the power transmission stage to export to identify whether rapid charge be supported the One grouping.When by receive the first grouping check wireless power transmitter support rapid charge when, wireless power receiver It can determine whether rapid charge has begun, and predetermined first respond packet including definite result is sent to wirelessly Power transmitter.That is, initial charge pattern can be determined based on the first respond packet.

With reference to Figure 20, if wireless power receiver enters the power transmission stage, wireless power receiver can collect The status information of their own, that is, receiver status information (S2001).

Wireless power receiver can be changed based on the receiver status information of collection to determine the need for charge mode (S2003 and S2005).

As an example, receiver status information can include battery charge state information.If it is filled when in general low electric power Battery charge while charging is performed under power mode and is reduced to predetermined reference value or smaller, then wireless power receiver can be with It determines to need to change over rapid charge pattern.

As an example, receiver status information can include the information of the amount on the CPU used.If when general low It is performed under power charge pattern while charging because the amount of the CPU used is more than predetermined reference value and power consumption is made to increase sharply, Then wireless power receiver can determine to need to change over rapid charge pattern.

As another example, receiver status information can include the letter on application software and the state of peripheral unit Breath.For example, when the number of currently performed application software is more than predetermined reference value, wireless power receiver can determine to need Change over rapid charge pattern.For example, the information of the state on peripheral unit can include camera drive status information, flash memory Drive status information and speaker drive status information etc..Wireless power receiver can the driving condition based on peripheral unit come It determines the need for changing over rapid charge pattern.

As a definitive result, when charge mode is needed to change, wireless power receiver can be generated including to change Charge mode value the grouping of predetermined charge mode, and the grouping of the charge mode of generation is sent to wireless power transmitter (S2007)。

When charge mode is not required to change in step S2005, wireless power receiver can be back to step 2001.

In fig. 20 it is shown that wireless power receiver determines the need for charge mode based on receiver status information Change, but this is only embodiment.In another embodiment, when based on the predesignated subscriber on the user interface of electronic device Menu selection and when asking to change over specific charge mode, wireless power receiver can generate to ask to change over accordingly to fill The charge mode grouping of power mode, and the charge mode generated grouping is sent to wireless power transmitter.

In detail, Figure 21 is to show that the charge mode in wireless charging system changes the flow chart of process.

With reference to Figure 21, if gone in wireless power transmitter 2110 from identification and configuration phase after the power transmission stage Initial control erroneous packet is received from wireless power receiver 1220, then wireless power transmitter 2110 can generate notice branch Hold predetermined first grouping of rapid charge, and by the first grouping of generation be sent to wireless power receiver 2120 (S2101 and S2102).Rapid charge pattern and wireless is supported when going out wireless power transmitter 2110 based on the first packet inspection received Power receiver 2120 is when can support the device of rapid charge, and wireless power receiver 2120 can generate to ask height Predetermined first respond packet that speed charges, and the first respond packet of generation is sent to wireless power transmitter 2110 (S2103)。

If it have passed through predetermined charge mode waiting time, wireless power receiver 2120 and wireless power transmitter 2110 can be by changing over rapid charge pattern and fixed operation frequency starts rapid charge by charge mode simultaneously (S2104).Herein, the charge mode as shown in figure 15 change waiting time can in advance limit or in charge mode Change the waiting time by wireless power receiver 2120 determine after by the first respond packet be transferred into wireless power emit Device 2110.In addition, fixed operation frequency as shown in figure 16 can limit or in advance when charge mode change is awaited orders Between determined by wireless power receiver 2120 after wireless power transmitter 2110 is transferred by the first respond packet.

Therefore, because perform wireless charging after the operating frequency for stably generating AC signals is fixed, it is possible to anti- It only charges the phenomenon that tentative.Compared with carrying out wireless charging at the operating frequency for generating AC signals astatically, steadily When generating the operating frequency progress wireless charging of AC signals, charged area can be broadened.

Figure 22 is the figure of the wireless charging method in the wireless power transmitter shown according to embodiment of the present disclosure.

With reference to Figure 22, if from wireless power receiver after wireless power transmitter was switched to the power transmission stage Receive the grouping for initial electrical control, then wireless power transmitter can generate that notice supports rapid charge predetermined the One is grouped and sends the first grouping of generation to wireless power receiver (S2201 and S2202).

Wireless power transmitter can receive predetermined first respond packet (S2203) including charge mode value.

Wireless power transmitter can check whether charge mode value corresponds to rapid charge pattern (S2204).

As inspection result, if charge mode value corresponds to rapid charge pattern, wireless power transmitter can lead to Charging (S2205) is performed under rapid charge pattern after fixed operation frequency after a predetermined time.Here, the predetermined time Charge mode either as shown in figure 15 in the first respond packet can be previously defined in and change stand-by time.It is in addition, fixed Operating frequency can be previously defined in the first respond packet or the operation frequency of generation AC signals as shown in figure 16 Rate.

As the inspection result of step S2104, when charge mode value does not correspond to rapid charge pattern, i.e., when charging mould When formula value corresponds to general low power charge pattern, wireless power transmitter can perform under general low power charge pattern to be filled Electric (S2206).

Figure 23 is the wireless charging method in the wireless power transmitter shown according to another embodiment of the disclosure Figure.

With reference to Figure 23, wireless power transmitter receives wherein cognitive phase 530 (or identification and configuration phase 430) or Fig. 4 The power transmission stage 440 or Fig. 5 the power transmission stage 540 in charge mode value be configured to filling for rapid charge pattern Power mode is grouped (S2301).

At this moment, wireless power transmitter can determine whether rapid charge is possible (S2302).

As determining result, when rapid charge is possible, wireless power transmitter can generate notice and support at a high speed Predetermined first grouping of charge mode, and send the first grouping of generation to wireless power receiver (S2303).

Wireless power transmitter can be by fixed operation frequency after a predetermined time under rapid charge pattern Perform wireless charging (S2304).

As determining as a result, when rapid charge is impossible in step S2302, wireless power transmitter can pass Notice is sent and can not provided the predetermined second packet of the rapid charge for respective wireless electric power receiver, be then provided as Charging (S2305 and S2306) is performed under the general low power charge pattern of acquiescence.

Figure 24 is the wireless charging method in the wireless charging system shown according to another embodiment of the disclosure Figure.

In detail, Figure 24 is to show that the charge mode in wireless charging system changes the flow chart of process.

With reference to Figure 24, if switched in wireless power transmitter 2410 from identification and configuration phase to the power transmission stage Initial control erroneous packet is received from wireless power receiver 2420 afterwards, then wireless power transmitter 2410 can generate logical Know predetermined first grouping for supporting rapid charge and send the first grouping of generation to wireless power receiver 2420 (S2401 and S2402).When the first packet inspection based on reception to wireless power transmitter 2410 supports rapid charge pattern simultaneously And wireless power receiver 2420 is when can support the device of rapid charge, wireless power receiver 2420 can be generated and is used for Request rapid charge makes a reservation for the first respond packet and sends the first respond packet of generation to wireless power transmitter 2410(S2403)。

Wireless power transmitter 2420 can generate AC signals to receive its value as 0 stabilization by changing operating frequency Control erroneous packet (S2404).

If continuously receiving the stability contorting erroneous packet of predetermined quantity or more, wireless power transmitter 2410 can With by the way that charge mode is changed to high speed charge mode and fixed operation frequency to start rapid charge (S2405).Here, Charge mode, which changes stable CEP count values, can pre-define or can change stable CEP count values as schemed in charge mode Wireless power transmitter 2410 sent to by the first respond packet after being determined by wireless power receiver 2420 shown in 17.

Therefore, because wireless charging is performed after the operating frequency for stably generating AC signals is fixed, therefore can be to prevent Only charging pause phenomenon.Compared with carrying out wireless charging at the operating frequency for generating AC signals astatically, stablizing real estate When carrying out wireless charging at the working frequency of raw AC signals, charged area can be broadened.

Figure 25 is the wireless charging method in the wireless power transmitter shown according to another embodiment of the disclosure Figure.

With reference to Figure 25, if connect after wireless power transmitter switches to the power transmission stage from wireless power receiver The grouping for initial electrical control is received, then wireless power transmitter can generate predetermined the first of notice support rapid charge It is grouped and sends the first grouping of generation to wireless power receiver (S2501 and S2502).

Wireless power transmitter can receive predetermined first respond packet (S2503) including charge mode value.

Wireless power transmitter can check whether charge mode value corresponds to rapid charge pattern (S2504).

As inspection result, if charge mode value corresponds to rapid charge pattern, wireless power transmitter can lead to It crosses change operating frequency generation AC signals and then checks whether and receive stability contorting erroneous packet (S2505).

At the special operating frequency for receiving stability contorting erroneous packet, wireless power transmitter, which can check, continuously to be connect Whether the count number of the stability contorting erroneous packet of receipts is equal to or more than predetermined value (S2506).If the stabilization continuously received The count number of erroneous packet is controlled to be less than predetermined value, then wireless power transmitter can repeat step S2505.

As inspection result, if the count number of the stability contorting erroneous packet continuously received is equal to or more than make a reservation for Value, then wireless power transmitter can perform charging (S2507) by fixing the operating frequency under rapid charge pattern.This In, predetermined value can be previously defined in charge mode either as shown in figure 17 in the first respond packet and change stable CEP meters Numerical value.In embodiments, rapid charge pattern can represent that inverter style is set or changed as full-bridge type, and electricity Force control method is set or changed as phase control method.

As the inspection result of step S2504, when charge mode value does not correspond to rapid charge pattern, i.e., when charging mould When formula value corresponds to general low power charge pattern, wireless power transmitter can perform under general low power charge pattern to be filled Electric (S2506).

In embodiments, general low power charge pattern can represent that inverter style is set or changed as half-bridge class Type, and electrical control method is set or changed as control method for frequency.

Figure 26 is the wireless charging method in the wireless power transmitter shown according to another embodiment of the disclosure Figure.

With reference to Figure 26, wireless power transmitter receives wherein cognitive phase 530 (or identification and configuration phase 430) or Fig. 4 The power transmission stage 440 or Fig. 5 the power transmission stage 540 in charge mode value be configured to filling for rapid charge pattern Power mode is grouped.(S2601).

At this moment, wireless power transmitter can determine whether rapid charge is possible (S2602).

As determining result, when rapid charge is possible, wireless power transmitter can generate notice and support at a high speed Predetermined first grouping of charge mode, and send the first grouping of generation to wireless power receiver (S2603).

Wireless power transmitter can generate AC signals by changing operating frequency, then check whether and receive stable control Erroneous packet (S2604) processed.

At the special operating frequency for receiving stability contorting erroneous packet, wireless power transmitter, which can check, continuously to be connect Whether the count number of the stability contorting erroneous packet of receipts is equal to or more than predetermined value (S2605).If the stabilization continuously received The count number of erroneous packet is controlled to be less than predetermined value, then wireless power transmitter can repeat step S2604.

As inspection result, if the count number of the stability contorting erroneous packet continuously received is equal to or more than make a reservation for Value, then wireless power transmitter can perform charging (S2606) by fixing the operating frequency under rapid charge pattern.This In, predetermined value can be previously defined in charge mode either as shown in figure 17 in the first respond packet and change stable CEP meters Numerical value.

In embodiments, rapid charge pattern can represent that inverter style is set or changed as full-bridge type, and And electrical control method is set or changed as phase control method.

As the inspection result of step S2602, when rapid charge is possible, wireless power transmitter can transmit logical The predetermined second packet of the rapid charge for respective wireless electric power receiver can not be provided by knowing, then be provided as giving tacit consent to General low power charge pattern under perform charging (S2607 and S2608).

Figure 27 is the block diagram for the structure for showing the wireless power control device according to embodiment of the present disclosure.

As an example, wireless power control device can be provided in wireless power transmitter.

With reference to Figure 27, wireless power control device 2700 may be configured to include power supply unit 2701, dc-dc 2710th, driving unit 2720, resonance circuit 2730, sensing unit 2740 and control communication unit 2750.

Power supply unit 2701 can receive the DC electric power applied by external power terminal and DC electric power is transferred to DC- DC converters 2710.

Control communication unit 2750 can include the communication unit 630 of Fig. 6 and controller 640.That is, control communication unit 2750 can perform the communication unit 630 of Fig. 6 and controller 640 institute it is functional.

The DC electric power received from power supply unit 2701 can be converted into the DC with certain strength by dc-dc 2750 Electric power.As an example, dc-dc 2710 can be configured with the variable voltage device for the intensity that can control voltage.DC-DC Converter 2710 can control the intensity of output DC electric power according to the predetermined control signal of control communication unit 2750, but originally It discloses without being limited thereto.

Driving unit 2720 the output DC electric power of dc-dc 2710 can be converted into AC electric power and to resonance electricity Road 2730 provides AC electric power.

Driving unit 2720 can include first switch 2727, the first driving unit 2720a and the second driving unit 2720b。

In embodiments, the first driving unit 2720a can be in wireless power transmitter in general low power charge mould It is performed under formula and AC electric power is provided when charging, and the second driving unit 2720b can be in wireless power transmitter in rapid charge It is performed under pattern and AC electric power is provided when charging.In another embodiment, the first driving unit 2720a can be sent out in wireless power Any one of emitter in general low power charge pattern and rapid charge pattern lower perform provides AC electric power when charging, and the Two driving unit 2720b can provide AC electric power when wireless power transmitter performs charging under rapid charge pattern.

Hereinafter, will be described in being driven according to the first driving unit 2720a of embodiment of the present disclosure and second Unit 2720b.

Control communication unit 2750 can be under the control of first switch 2727 to the output DC electricity of dc-dc 2710 Power is controlled such that it applies to the first driving unit 2720a or the second driving unit 2720b.More specifically, control communication Unit 2750 can be controlled such that first switch 2727 the general low electric power in Figure 19 to 26 when wireless power transmitter The output DC electric power that dc-dc 2710 when charging is performed under charge mode is transferred to the first driving unit 2720a.Herein When, the DC electric power exported from dc-dc 2710 can be controlled, so that it does not apply to the second driving unit 2720b.In addition, control communication unit 2750 can be controlled such that first switch 2727 when wireless power transmitter is being schemed The output DC electric power that dc-dc when charging is performed under 19 to 26 rapid charge pattern is transferred to the second driving unit 2720b.At this moment, the DC electric power exported from dc-dc 2710 can be controlled, is driven so that it does not apply to first Moving cell 2720a.

First driving unit 2720a can include second switch 2721, (1-1) inverter 2722, (1-2) inverter 2723 and the first AC signal controller 2724.

Under general low power charge pattern, control communication unit 2750 can be right under the control of second switch 2721 The output DC electric power of dc-dc 2710 is controlled such that it applies to (1-1) inverter 2722 or the (1-2) inversion Device 2723.As an example, under general low power charge pattern, control communication unit 2750 can determine the strong of output power Degree determines the inverter generated for AC signals of the first driving unit 2720a based on the intensity of identified output power Type, and second switch 2721 is controlled according to definite inverter style.

Here it is possible to the intensity of output power is determined based on the feedback signal received from wireless power transmission apparatus.Make For example, feedback signal can be included in the control erroneous packet limited in WPC.

When the intensity of output power definite based on feedback signal is more than 2722 quilt of (1-1) inverter in half-bridge type During predetermined critical in the state of activation, control communication unit 2750 can control second switch 2721 so that DC-DC is converted The output DC electric power of device 2710 is transferred to (1-2) inverter 2723 of bridge-type.It at this moment, can be to being converted from DC-DC The DC electric power that device 2710 exports is controlled, so that it does not apply to (1-1) inverter 2722.

Control communication unit 2750 can be according to appointing in (1-1) inverter 2722 and (1-2) inverter 2723 One be activated in the state of determine output power intensity come determine the need for change electrical control method.As definite As a result, if necessary to change electrical control method, then control communication unit 2750 can be by controlling the first AC signal controllers 2724 dynamically change electrical control method.As an example, the electrical control method of the first AC signal controllers 2724 can wrap Duty ratio control method, driving frequency control method, Method of Phase-Shift Controlling etc. are included, but the present disclosure is not limited thereto.

As an example, when (1-1) inverter 2722 of semi-bridge type is activated, control communication unit 2750 can pass through According to the intensity of identified output power any one in Duty ratio control method and driving frequency control method is selected to hold Row Electric control.On the other hand, when (1-2) inverter 2723 of bridge-type is activated, control communication unit 2750 can be with By according to the intensity of identified output power select any one in Method of Phase-Shift Controlling and driving frequency control method come Perform Electric control.

As another example, when (1-1) inverter 2722 of semi-bridge type is activated, control communication unit 2750 can be with By according to the intensity of identified output power select any one in Method of Phase-Shift Controlling and driving frequency control method come Perform Electric control.On the other hand, when (1-2) inverter 2723 of bridge-type is activated, control communication unit 2750 can With by selecting any in Duty ratio control method and driving frequency control method according to the intensity of identified output power It is a to perform Electric control.

When performing Electric control by the Duty ratio control method and Method of Phase-Shift Controlling of the first driving unit 2720a When, control communication unit 2750 can control the first AC signal controllers 2724 so that driving frequency does not change.

When according to the Duty ratio control method of the first driving unit 2720a perform Electric control during with according to feedback letter When the corresponding duty cycle of intensity of number definite output power is more than the predetermined duty cycle upper limit, control communication unit 2750 can be with Control the first AC signal controllers 2724 so that electrical control method changes into driving frequency controlling party from Duty ratio control method Method.

In a state that (1-1) inverter 2722 of the semi-bridge type in the first driving unit 2720a is activated, according to Driving frequency corresponding with the intensity of identified output power is less than pre- during driving frequency control method performs Electric control When determining duty cycle lower limit, control communication unit 2750 can control the first AC signal controllers 2724 so that (the 1- of bridge-type 2) inverter 2723 is activated and (1-1) inverter 2722 of semi-bridge type is not activated.

Duty ratio control method is wireless power control method, wherein, consolidate in the driving frequency of the first driving unit 2720a The duty cycle of AC electric power signals is controlled in the state of fixed, so as to control the average output power of unit interval.At this moment, duty cycle There can be 10% to 50% control range, but the present disclosure is not limited thereto.

Driving frequency control method is wireless power control method, wherein, by the operation for controlling the first driver 2720a Frequency controls the intensity of the electric power exported by resonance circuit 2730.It can be according to the capacitance and the electricity of inductor by capacitor The definite resonant frequency of sense (its form resonance circuit 2730) and the operating frequency that is generated by the first AC signal controllers 2724 it Between matching degree control the intensity of the electric power exported by resonance circuit 2730.As an example, when by resonance circuit 2730 When definite resonant frequency corresponds to the operating frequency generated by the first AC signal controllers 2724, maximum power can be exported. As an example, the control range of the operating frequency of the first driving unit 2720a can be from 110KHz to 205KHz, and 110KHz It can be the resonant frequency of the maximum intensity of output power.

Method of Phase-Shift Controlling is wireless power control method, wherein, by controlling the AC signals with special operating frequency Phase control the intensity of output power.As an example, the phase controlling of the first driving unit 2720a may range from 0 degree To 133 degree of value.

Second driving unit 2720b can include the second inverter 2725 and the 2nd AC signal controllers 2725.

Second inverter 2725 can be with any one in semi-bridge type and bridge-type.More specifically, with working as the second inverter 2725 compare when being semi-bridge type, and when the second inverter 2725 is bridge-type, the magnitude of current of application reduces, and therefore noise electricity The size of the intensity of stream reduces.Accordingly it is possible to prevent charging pause phenomenon.

In rapid charge pattern, control communication unit 2750 can determine the intensity of output power, and to the 2nd AC Signal controller 2726 is controlled to perform Electric control in the state of being activated in the second inverter 2725.As an example, The electrical control method of 2nd AC signal controllers 2726 can be Method of Phase-Shift Controlling etc., and but the present disclosure is not limited thereto.

As an example, when the second inverter 2725 of bridge-type is activated, control communication unit 2750 can be according to institute The intensity of definite output power performs Electric control by Method of Phase-Shift Controlling.More specifically, when single by the second driving The Phaseshift controlling of first 2720b is come when performing Electric control, control communication unit 2750 can control the 2nd AC signal controllers 2726 so that driving frequency does not change.Therefore, electric power can steadily be controlled under rapid charge.

Method of Phase-Shift Controlling is by controlling the AC signals with special operating frequency in the second driving unit 2720b Phase controls the wireless power control method of the intensity of output power.As an example, the phase control of the second driving unit 2720b Scope processed can be 0 degree to 133 degree of value.Special operating frequency can be performed under the rapid charge pattern of Figure 21 to Figure 26 Operating frequency during charging.

Resonance circuit 2730 may be configured to include forming particular resonant frequency and have specified impedance value at least One capacitor and at least one inductor.

When the quantity for the transmitting coil being included in resonance circuit 2730 is multiple, resonance circuit 2730 can be configured Into causing：Regardless of the arrangement of transmitting coil, the impedance value of transmitting coil is equal to each other.

Control communication 2750 can be demodulated the inband signaling received from wireless power receiver.As an example, Control communication unit 2750 can be to the predetermined time after entering the power transmission stage 440 or 540 in wireless power transmitter In section the control erroneous packet that receives is demodulated, and determines output power based on demodulated control erroneous packet Intensity.

Control communication unit 2750 can be modulated the grouping of wireless power receiver to be sent to, and will be through adjusting The grouping of system is sent to resonance circuit 2730.If as an example, receive FOD status packets in the power transmission stage 540, Then control communication unit 2750 that can generate the predetermined response for indicating whether to perform the FO detection process based on figure of merit value Grouping, is modulated the respond packet generated, and modulated respond packet is sent to resonance circuit 2730.

Herein, if respond packet be ACK grouping, this can mean wireless power transmission apparatus perform based on quality because The foreign matter sensing process of numerical value.On the other hand, when respond packet is NACK groupings, this can mean wireless power transmission apparatus The foreign matter sensing process based on figure of merit value is not performed.Wireless power transmission apparatus can be based on the software that is wherein equipped with and hard The version of part senses process to identify whether wireless power transmission apparatus will perform the foreign matter based on figure of merit value.

Sensing unit 2740 can measure specific node in wireless power transmission apparatus, specific part, specific position etc. Voltage, electric current, power, the temperature at place etc..As an example, sensing unit 2740 can measure dc-dc 2710 and driving The intensity of current/voltage/power between unit 2720, and the result of measurement is sent to control communication unit 2750.Make For another example, sensing unit 2740 can measure the intensity of the electric current for the inductor for flowing through resonance circuit 2730 and be applied to The intensity of the voltage of the capacitor of resonance circuit 2730, and the result of measurement is sent to control communication unit 2750.

Figure 28 is the block diagram of the detailed construction for the first AC signal controllers 2724 for showing Figure 27.

With reference to Figure 28, the first AC signal controllers 2724 may be configured to include phase-shift unit 2810, operating frequency life Into unit 2820, Duty ratio control unit 2830, gate drivers 2840 and controller 2850.

Controller 2850 can perform and control the communication of communication unit 2750, and according to control communication unit 2750 Control signal controls the next module.Herein, the next module includes phase-shift unit 2810, operating frequency generation unit 2820, accounts for Sky is than control unit 2830 and gate drivers 2840.

Phase-shift unit 2810 can control the phase of the AC signals generated by operating frequency generation unit 2820.With controlled The AC signals of phase can be transferred into gate drivers 2840.As an example, phase controlling scope can be 0 degree to 133 degree Value.

Operating frequency generation unit 2820 can be generated according to the control signal of controller 2850 has special operating frequency AC signals.The AC signals generated can be transferred into phase-shift unit 2810, Duty ratio control unit 2830 and data-driven Any one in device 2840.As an example, the operational frequency range to be controlled by operating frequency generation unit 2820 can be 110KHz to 205KHz, and 110KHz can be resonant frequency of the intensity of output power at which for maximum.In this feelings Under condition, when inverter of semibridge type is activated, the operating frequency control range of operation frequency control method can be 172KHz extremely The value of 205KHz.When bridge-type inverter is activated, the operating frequency control range of operation frequency control method can be The value of 110KHz to 172KHz.However, present disclosure is without being limited thereto.

Duty ratio control unit 2830 can control the duty cycle of the AC signals generated by operating frequency generation unit 2820. AC signals with controlled duty cycle can be transferred into gate drivers 2840.As an example, the control range of duty cycle can To be 10% to 50%, but present disclosure is without being limited thereto.

Gate drivers 2840 can be arranged on (1-1) inverter 2722 based on input to AC signals therein to control Or the switch in (1-2) inverter 2723.

The AC signals of input to gate drivers 2840 can be at least one pulse-width signal, but present disclosure It is without being limited thereto.

Figure 29 is the inverter for being used to DC signals being converted into AC signals shown according to the embodiment of the present disclosure Basic principle of operation figure.

The driving unit 2720 of Figure 27 may be configured to include inverter of semibridge type and bridge-type inverter.

With reference to the reference numeral 29a of figure 29.Inverter of semibridge type can include two switch S1 and S2, and output voltage The level of Vo can change under the control of the switch on/off of gate drivers.As an example, when switch S1 short circuits and switch S2 During open circuit, the level of output voltage Vo has the value of+Vdc as input voltage.On the other hand, when switch S1 opens a way and opens When closing S2 short circuits, the level of output voltage Vo has value 0.If switch S1 and switch S2 alternating ground short circuits, semi-bridge type inversion Device can export the AC waveforms with respective cycle.

With reference to the reference numeral 29b of figure 29.Bridge-type inverter may be configured to include four switch S1, S2, S3 and S4, and as shown in the form that reference numeral 29b includes, under the switch on/off control of gate drivers, output electricity The level of pressure Vo can have+Vdc ,-Vdc or 0 value.If as an example, switch S1 and S2 short circuit and other switch opens, Then the level of output voltage Vo has the value of+Vdc.On the other hand, if switch S3 and S4 short circuits and other switch opens, The level of output voltage Vo has the value of-Vdc.

The inverter of semibridge type of Figure 30 can include (1-1) inverter 2722 of Figure 27.

Hereinafter, for ease of description, inverter of semibridge type is used with the meaning identical with the first inverter.

With reference to Figure 30, the first inverter 3020 may be configured to include first switch 3021 and second switch 3022.The One inverter 3020 is coupled to the resonance circuit 3030 for being configured with capacitor 3031 and inductor 3032.It is provided from power supply 3010 DC electric power can be controlled by the switch of the first inverter 3020 is converted into AC signals to be transferred into resonance circuit 3030.

In the embodiment of Figure 30, shown as example equipped with including a capacitor 3031 and an inductor The wireless power transmission apparatus of 3032 resonance circuit 3030.However, this is only an embodiment, resonance circuit is formed 3030 capacitor and the quantity of inductor and its circuit configuration can change according to the design of those skilled in the art.

The bridge-type inverter of Figure 31 can be (1-2) inverter 2723 or the second inverter 2725 of Figure 27.

Hereinafter, for ease of description, bridge-type inverter will be used with the meaning identical with the second inverter.

With reference to Figure 31, the second inverter 3120 can include first to fourth switch 3121,3122,3123 and 3124.The Two inverters 3120 are coupled to the resonance circuit 3130 for being configured with capacitor 3131 and inductor 3132.It is provided from power supply 3110 DC electric power can be controlled by the switch of the second inverter 3120 is converted into AC signals to be transferred into resonance circuit 3130.

In the embodiment of Figure 31, shown as example equipped with including a capacitor 3131 and an inductor The wireless power transmission apparatus of 3132 resonance circuit 3130.However, this is only an embodiment, resonance circuit is formed 3130 capacitor and the quantity of inductor and its circuit configuration can change according to the design of those skilled in the art.

Figure 32 be show according to the embodiment of the present disclosure be used to carry out with general low power charge pattern it is wireless The flow chart of the wireless power control method of charging.

With reference to Figure 32, wireless power transmission apparatus can be according to Figure 19 to Figure 26 with general low power charge pattern and high speed Any one of charge mode carries out wireless charging (S3201 and S3202).

If general low power charge pattern is chosen, wireless power transmission apparatus can be based on according on radio The intensity for the initial output power that the information of the classification of power receiver and/or the required electric power received by feedback channel determine It determines to generate the type of the inverter of AC signals, and activates corresponding inverter (S3203).Herein, feedback channel It can be the band communication channel using the frequency band equal with the frequency band used in wireless power transmission.However, present disclosure It is without being limited thereto, and feedback channel can be using the frequency band different from the frequency band used in wireless power transmission short distance without Line communication channel.

If it receives to ask the feedback on reservation signal of Electric control by feedback channel, wireless power transmitting dress The intensity of output power (S3204) can be determined based on the feedback signal received by putting.

Wireless power transmission apparatus can determine determined by the intensity of output power whether can be by the currently active inverse The type for becoming device supports (S3205).

As determining result, if the intensity of identified output power can not be supported, wireless power transmitting dress Inverter style corresponding with the intensity of identified output power and electrical control method (S3206) can be redefined by putting. At this point, wireless power transmission apparatus can generate AC signals using newly definite inverter style, and according to newly definite Electrical control method and feedback signal control the intensity of output power.

As determining as a result, if the intensity of identified output power can not be supported, wirelessly for step S3205 Power transmission device can determine whether to change electrical control method (S3207).Herein, wireless power transmission apparatus can be with By check in step S3204 determine output power intensity whether be will be by the currently active electrical control method control The intensity of system come determine the need for change electrical control method.

As determining result, if necessary to change, then wireless power transmission apparatus can redefine with it is identified defeated Go out the corresponding electrical control method of intensity of electric power, and by the way that the currently active electrical control method is changed over what is newly determined Electrical control method performs Electric control (S3208).

As determining as a result, if you do not need to changing, then wireless power transmission apparatus can be back to step for step S3207 Rapid S3204.

Figure 33 is to show to be used to carry out with general low power charge pattern according to another embodiment in the present disclosure The flow chart of the wireless power control method of wireless charging.

With reference to Figure 33, wireless power transmission apparatus can be according to Figure 19 to Figure 26 with general low power charge pattern and high speed Any one of charge mode carries out wireless charging (S3301 and S3302).

If general low power charge pattern is chosen, wireless power transmission apparatus can enter the power transmission stage, The first reception feedback signal is then based on to determine the intensity of output power (S3303).

Wireless power transmission apparatus can determine inverter style corresponding with the intensity of identified output power (S3304)。

Wireless power transmission apparatus can determine optional electrical control method corresponding with identified inverter style In the intensity for output power determined by supporting electrical control method (S3305).

Hereafter, wireless power transmission apparatus can determine the strong of output power based on the feedback signal being periodically received It spends (S3306).

Whether wireless power transmission apparatus can determine the intensity of the output power determined in step S3306 in predetermined In the range of the Electric control corresponding with identified electrical control method of justice (S3307).

As determining result, if the intensity of output power exceeds Electric control scope, wireless power transmission apparatus can To redefine inverter style corresponding with the intensity of output power definite in step S3306 and/or Electric control side Method (S3308).

As the definite of step S3307 as a result, if the intensity of output power is in the range of Electric control, radio Power emitter can keep the currently active inverter style and electrical control method, and perform step S3306.

Figure 34 is to show being used under general low power charge pattern based on defeated according to the embodiment of the present disclosure Go out the change of the intensity of electric power to change the figure of the method for inverter style and electrical control method.

If receive to ask the feedback signal of Electric control, wireless power under general low power charge pattern Emitter can determine the intensity of output power, and determine inverter style based on the intensity of identified output power And electrical control method.

Hereinafter, will be described in changing inverter style and electrical control method based on the intensity of output power The intensity of method, the wherein output power is by first to the after wireless power transmission apparatus enters the power transmission stage It is determined based on feedback signal during four time.

Reference Figure 34, if the intensity of the output power determined by the feedback signal received at first time is A, Then inverter style can be determined as semi-bridge type by wireless power transmission apparatus, and electrical control method is determined as duty cycle Control method.

If the intensity of the output power determined by the feedback signal received at the second time is B, can incite somebody to action Inverter style remains semi-bridge type, and can electrical control method be changed over operating frequency control from Duty ratio control method Method processed.

If the intensity of the output power determined by the feedback signal received at the 3rd time is C, with really The corresponding inverter style of intensity of fixed output power is bridge-type.Therefore, wireless power transmission apparatus can be by inverter Type changes over bridge-type from semi-bridge type, and electrical control method is determined as Method of Phase-Shift Controlling.

If the intensity of the output power determined by the feedback signal received at the 4th time is D, radio Inverter style can be remained bridge-type by power emitter, and electrical control method is changed over behaviour from Method of Phase-Shift Controlling Working frequency control method.

Figure 35 be show according to the embodiment of the present disclosure be used for the semi-bridge type under general low power charge pattern Inverter controls the flow chart of the method for wireless power in the state of being activated.

With reference to Figure 35, under general low power charge pattern, wireless power transmission apparatus can be based in semi-bridge type inversion The feedback signal that device receives in the state of being activated determines the intensity of output power (S3501 and S3502).As an example, Feedback signal can be the control erroneous packet defined in WPC, and periodically be received in the power transmission stage.

Wireless power transmission apparatus can check whether the currently active electrical control method is Duty ratio control method (S3503)。

As inspection result, if the currently active electrical control method is Duty ratio control method, wireless power hair Injection device can determine whether duty cycle corresponding with the intensity of identified output power is less than predetermined duty cycle lower control limit (S3504).As an example, Duty ratio control scope can be 10% to 50% value.It is activated in Duty ratio control method In the case of, minimum power can be exported when duty cycle is configured to 50%, can be exported when duty cycle is configured to 10% Maximum power.

When the intensity pair of the output power with being determined based on feedback signal in the state of being activated in Duty ratio control method When the duty cycle answered is less than predetermined duty cycle lower limit, wireless power transmission apparatus can be by electrical control method from Duty ratio control Method changes over operation frequency control method (S3505).

Wireless power transmission apparatus can based on the feedback signal received when operation frequency control method is activated come Determine the intensity (S5306) of output power.

Wireless power transmission apparatus can determine operation corresponding with the intensity of output power definite in step S3506 Whether frequency is less than predetermined operation frequencies lower control limit (S3507).

As determining result, if operating frequency corresponding with the intensity of identified output power is less than predetermined operation frequency Rate lower control limit, then wireless power transmission apparatus inverter style can be changed over to bridge-type (S3508).

As determining as a result, if operating frequency corresponding with the intensity of identified output power is big for step S3507 In predetermined operation frequencies lower control limit, then wireless power transmission apparatus can determine corresponding with the intensity of identified output power Operating frequency whether be more than predetermined operation frequencies upper control limit (S3509).

As determining result, if operating frequency corresponding with the intensity of identified output power is more than predetermined operation frequency Rate upper control limit, then wireless power transmission apparatus electrical control method can be changed over duty cycle from operation frequency control method Control method (S3510).

As determining as a result, if operating frequency corresponding with the intensity of identified output power is small for step S3509 In predetermined operation frequencies upper control limit, then wireless power transmission apparatus can enter step S3506 and by operating frequency control Method processed performs Electric control.

As the definite of step S3503 as a result, when the currently active electrical control method is not Duty ratio control method, Wireless power transmission apparatus can perform step S3507.

Figure 36 be show according to the embodiment of the present disclosure be used for the bridge-type under general low power charge pattern Inverter controls the flow chart of the method for wireless power in the state of being activated.

With reference to Figure 36, under general low power charge pattern, wireless power transmission apparatus can be based in bridge-type inversion The feedback signal that device is periodically received in the state of being activated determines the intensity of output power (S3601 and S3602).

Wireless power transmission apparatus can check whether the currently active electrical control method is Method of Phase-Shift Controlling (S3603)。

As inspection result, if the currently active electrical control method is Method of Phase-Shift Controlling, wireless power transmitting Whether device can be determined with the corresponding phase shift of the intensity of identified output power outside predetermined Phaseshift controlling scope (S3604).As an example, phase controlling scope can be 0 degree to 133 degree.When opposite with the intensity of identified output power The phase shift answered is less than 0 degree or when being more than 133 degree with the corresponding phase shift of the intensity of identified output power, wireless power Emitter can be determined with the corresponding phase shift of the intensity of identified output power outside Phaseshift controlling scope.

As determining result, if with the corresponding phase shift of intensity of identified output power Phaseshift controlling scope it Outside, then electrical control method can be changed into operation frequency control method by wireless power transmission apparatus from Method of Phase-Shift Controlling (S3605)。

Wireless power transmission apparatus can be based on the feedback received in the state of being activated in operation frequency control method Signal determines the intensity of output power (S3606).

Wireless power transmission apparatus can determine the corresponding behaviour of intensity of the output power with being determined in step S3606 Whether working frequency is less than predetermined operation frequencies lower control limit (S3607).

As determining result, if being less than predetermined operation with the corresponding operating frequency of intensity of identified output power Frequency lower control limit, then wireless power transmission apparatus can be determined whether to according to Figure 19 to Figure 26 with rapid charge pattern perform Wireless charging (S3608).

As determining result, if to perform wireless charging with rapid charge pattern, wireless power transmission apparatus can be with Wireless charging (S3609) is performed with rapid charge pattern.

As determining as a result, if not performing wireless charging, then radio with rapid charge pattern for step S3608 Power emitter can export predetermined alarm signal, output power to be notified to have reached the maximum output power (S3610).This In, alarm signal can be exported using alarm and/or display device such as lamp, buzzer, vibrator or liquid crystal display, But present disclosure is without being limited thereto.

If determine the corresponding operating frequency of intensity as a result, with identified output power as step S3607 More than predetermined operation frequencies lower control limit, then wireless power transmission apparatus can determine the intensity phase with identified output power Whether corresponding operating frequency is more than predetermined operation frequencies upper control limit (S3611).

As determining result, if being less than predetermined operation with the corresponding operating frequency of intensity of identified output power Frequency upper control limit, then wireless power transmission apparatus can be back to step S3606.

On the other hand, if determined as step S3611 as a result, corresponding with the intensity of identified output power Operating frequency be more than predetermined operation frequencies upper control limit, then wireless power transmission apparatus can by electrical control method from operation frequency Rate control method changes into Method of Phase-Shift Controlling (S3612).

As the definite of step S3603 as a result, when the currently active electrical control method is not Method of Phase-Shift Controlling, nothing Line power transmission device can perform step S3607.

Figure 37 is the block diagram of the detailed construction for the 2nd AC signal controllers 2726 for showing Figure 27.

With reference to Figure 37, the 2nd AC signal controllers 2726 can be configured as including phase-shift unit 3710, operating frequency life Into unit 3720, gate drivers 3730 and controller 3740.

Controller 3740 can perform and control the communication of communication unit 2750, and according to control communication unit 2750 Control signal controls the next module.Here, the next module includes phase-shift unit 3710, operating frequency generation unit 3720 and grid Driver 3730.

Phase-shift unit 3710 can control the phase of the AC signals generated by operating frequency generation unit 3720.With controlled The AC signals of phase can be transferred into gate drivers 3730.As an example, phase controlling scope can be 0 degree to 133 degree Value.

Operating frequency generation unit 3720 can be generated according to the control signal of controller 3740 with specific operation frequency The AC signals of rate.The AC signals generated can be transferred into phase-shift unit 3710.Special operating frequency can be when with Figure 21 To Figure 26 rapid charge pattern perform charge when fixed operating frequency.

Gate drivers 3730 can control the second inverter based on input to the AC signals of gate drivers 3730 The switch set in 2725.

The AC signals of input to gate drivers 3730 can be at least one pulse-width signal, but present disclosure It is without being limited thereto.

Figure 38 be show according to the embodiment of the present disclosure be used under rapid charge pattern be based on output power Intensity variation come control electric power method figure.

Under rapid charge pattern, if receiving to ask the feedback signal of Electric control, wireless power transmitting Device can determine the intensity of output power, and be controlled based on the intensity of identified output power by Method of Phase-Shift Controlling Electric power processed.

Hereinafter, will be described in after wireless power transmission apparatus enters the power transmission stage according to based on feedback The intensity for the output power that signal determines controls the method for electric power.

With reference to Figure 38, under rapid charge pattern, operating frequency can be fixed to specific behaviour by wireless power transmission apparatus Working frequency F_fix, and Phaseshift controlling is performed to control output power by the intensity based on identified output power.

Therefore, because wireless charging is to be fixed to perform afterwards in the operating frequency that can stably generate AC signals, institute The phenomenon that can prevent charging pause.In to stably generate the operating frequency of AC signals the wireless charging that carries out, with It is compared with the wireless charging that cannot stably generate the progress of the operating frequency of AC signals, charged area can be expanded.In addition, complete In the case of bridge type, compared with the situation of semibridge system, the magnitude of current applied reduces, therefore the size of noise current reduces.Cause This, the phenomenon that can preventing charging pause.In addition, output electricity is controlled using Method of Phase-Shift Controlling under rapid charge pattern Power so that wireless power can be steadily controlled in rapid charge.

Figure 39 be show according to the embodiment of the present disclosure be used under rapid charge pattern bridge-type inverter The flow chart of the method for wireless power is controlled in the state of being activated.

With reference to Figure 39, wireless power transmission apparatus can be according to Figure 19 to Figure 26 with general low power charge pattern and high speed Any one of charge mode performs wireless charging (S3901 and S3902).

If rapid charge pattern is chosen, operating frequency can be fixed to predetermined operation by wireless power transmission apparatus Frequency (S3903).Predetermined operation frequencies can be the fixed behaviour when the rapid charge pattern execution charging with Figure 21 to Figure 26 Working frequency.

If the operating frequency of wireless power transmission apparatus can be fixed to predetermined operation frequencies, wireless power transmitting The bridge-type inverter of device can be activated (S3904).

In a state that the bridge-type inverter of wireless power transmission apparatus is activated, wireless power transmission apparatus can be with base The intensity of output power (S3905) is determined in the feedback signal being periodically received.

Whether wireless power transmission apparatus can check the intensity of identified output power in the range of Electric control (S3906)。

As inspection result, if the intensity of identified output power, in the range of Electric control, wireless power is sent out Injection device can control electric power (S3907) based on the intensity of identified output power by Method of Phase-Shift Controlling.Then, nothing Line power transmission device can repeat step S3905.

In step S3906, if the intensity of identified output power exceeds Electric control scope, wireless power hair Injection device can check whether the intensity of identified output power is equal to or more than maximum output electric power (S3908).

If the intensity of identified output power is equal to or more than maximum output electric power, wireless power transmission apparatus can To export predetermined alarm signal, output power (S3909) is had reached the maximum with the intensity of output power determined by notice.This In, alarm signal can be exported using alarm and/or display device such as lamp, buzzer, vibrator or liquid crystal display, But present disclosure is without being limited thereto.

In step S3908, if the intensity of identified output power is less than maximum output electric power, wireless power hair Injection device can perform charging (S3910) with general low power charge pattern.

In step S3902, if not performing charging with rapid charge pattern, wireless power transmission apparatus can be with General low power charge pattern performs charging (S3910).

With reference to Figure 40, it can arrange that there are three transmitting coils.It is equal in order to be performed in the charged area with certain size Even power transmission, at least one in multiple transmitting coils can be arranged to overlap with other transmitting coils.In Figure 40, 4010 and second coil 4020 of first coil can be concurrently arranged in the first layer on shielding material 4040, to be spaced Certain distance is opened, tertiary coil 4030 can be arranged in the second layer on the first and second coils 4010 and 4020, with One and second coil 4010 and 4020 it is overlapping.

First coil 4010, the second coil 4020 and tertiary coil 4030 can be according to the coil marks defined in WPC or PMA Standard manufactures, and the physical characteristic of first coil 4010, the second coil 4020 and tertiary coil 4030 can be in permissible range It is interior mutually the same.

For example, transmitting coil can have standard as shown in table 1 below.

Table 1

Table 1 shows the standard of the transmitting coil of the type A13 defined in WPC.In one embodiment, First Line It encloses the 4010, second coil 4020 and tertiary coil 4030 can be according to the outer length, inner length, outside being defined in table 1 Width, inner width, thickness and the number of turn manufacture.It is apparent that pass through identical manufacturing process, first coil 4010, second The physical characteristic of coil 4020 and tertiary coil 4030 can be mutually the same in error range.

However, as shown in figure 40, first coil 4010, the second coil 4020 and tertiary coil 4030 can according to shielding Material position apart and with different measurement inductance.

For example, 4010 and second coil 4020 of first coil meets the standard of table 1 and the inductance with 12.5 μ H.It is another Aspect, tertiary coil 4030 are different from 4010 and second coil 4020 of first coil and shielding material with shielding material distance Expect distance, therefore, tertiary coil 4030 there can be the inductance less than 12.5 μ H.

For example, 4010 and second coil 4020 of first coil is arranged to contact with shielding material, but tertiary coil 4030 can be arranged to be spaced apart with shielding material with predetermined altitude.

It in one embodiment, can between shielding material and first, second or third coil 4010,4020 or 4030 To be disposed with adhesive.

Therefore, in one embodiment, tertiary coil 4030 can have than 4010 and second coil of first coil The number of turn of the 4020 larger number of turn of the number of turn (for example, 0.5 circle, 1 circle or 2 circles), to have and first coil 4010 and second The equal inductance of the inductance of coil 4020.

In one embodiment, tertiary coil 4030 can have the number of turn of 12.5 circles, 13 circles or 14 circles.

Stated differently, since tertiary coil 4030 placed in the middle compared with 4010 and second coil 4020 of first coil away from shielding Material farther out, so the measurement inductance of tertiary coil 4030 may be with the measurement inductance of 4010 and second coil 4020 of first coil It is different.Therefore, it is slightly longer than by the length for the conducting wire for making composition tertiary coil 4030 and forms 4010 and second line of first coil The inductance of tertiary coil 4030, can be adjusted to be equal to 4010 and second coil of first coil by the length of the conducting wire of circle 4020 4020 inductance.

In one embodiment, because the length for forming the conducting wire of tertiary coil 4030 is slightly longer than composition first coil 4010 and second coil 4020 conducting wire length, so even if when tertiary coil 4030 be located at and first coil 4010 and second When coil 4020 is compared further from the position of shielding material, the inductance of three coils can also be identical, such as 12.5 μ H.Here, three The identical inductance for meaning three coils of the inductance of a coil is in the error range of ± 0.5 μ H.

With being oriented with the transmitting coil that another transmitting coil overlaps further away from shielding material, the survey of the transmitting coil Amount inductance can become smaller.As transmitting coil is further away from shielding material, the length of transmitting coil can become longer, to increase Inductance.

With reference to Figure 41, when three coils being included in wireless power transmitter have different inductance, it is necessary to couple To three driving circuits 4110 of corresponding coil and three LC resonance electricity of the capacitor including being used to generate identical resonance frequency Road 4120.

Although wireless power transmitter includes multiple coils, by wireless power transmitter generate for performing electric power The resonant frequency of transmission changes independent of each transmitting coil.Resonant frequency will follow the mark of wireless power transmitter support Quasi-resonance frequency.

The resonant frequency generated in LC resonance circuit 4120 can change according to the inductance of coil and the capacitance of capacitor Become.

For example, resonant frequency fr can be 100kHz.When it is 200nF to generate the capacitance of capacitor of resonant frequency, three The inductance of a coil will meet 12.5 μ H, so that a capacitor is used only.If the inductance of three coils is different from each other, need Three capacitors that will be with different capacitances generate the resonant frequency of 100kHz.In addition, it is necessary to including for AC voltages to be applied Add to three driving circuits 4110 of the inverter of corresponding LC resonance circuit 4120.

Figure 42 be show according to the embodiment of the present disclosure while including multiple coils only include one drive The figure of the wireless power transmitter of dynamic circuit.

With reference to Figure 42, when the inductance of three coils of wireless power transmitter is identical, wireless power transmitter can be only Including a driving circuit 4210, and switch 4230 is controlled so that one driving circuit 4210 can be coupled to radio The coil with highest electric power transmission efficiency in the coil of power receiver and the three of wireless power transmitter coils.

Compared with Figure 41, since a driving circuit 4210 is used only in wireless power transmitter, component can be reduced The area occupied.Therefore, wireless power transmitter can become compact, and can reduce manufacture wireless power transmitter when institute The cost of raw material of cost.

In one embodiment, wireless power transmitter can use signal strength indicator in the examination stage, with Just the electric power transmission efficiency between three coils of wireless power transmitter and the coil of wireless power receiver is calculated.

In another embodiment, wireless power transmitter can by calculate three coils of wireless power transmitter with The coefficient of coup between the coil of wireless power receiver selects the coil with high coupling coefficient of wireless power transmitter.

In another embodiment, wireless power transmitter can identify wireless power transmitter by calculating Q factor The coil with high Q factor, and control switch 4230 so that the coil of wireless power transmitter can be coupled to driving Circuit 4210.

Figure 43 is any one coupling enable in multiple transmitting coils shown according to the embodiment of the present disclosure It is connected to the figure of the multiple switch of a driving circuit.

With reference to Figure 43, power transmission unit can include converting the driving circuit 4310 of input voltage, for making drive Dynamic circuit 4310 can be coupled to the switch 4320, multiple transmitting coils 4330, coupled in series to wireless power of LC resonance circuit The capacitor 4340 of multiple coils of transmitter and the controller 4350 for controlling the cut-off/close of switch 4320.

Controller 4350 can identify the coil of wireless power receiver and multiple coils 4330 of wireless power transmitter In the wireless power transmitter coil with highest electric power transmission efficiency, and will switch 4320 control for be closed so that nothing The coil identified of line power transmitter is coupled to driving circuit 4310.

It can be presented as and performed and be stored in a computer according to the method for aforementioned embodiments in the present disclosure Program in computer readable recording medium storing program for performing.The example of computer readable recording medium storing program for performing is ROM, RAM, CD-ROM, tape, soft Disk, optical data storage device etc., and further include the realization (such as the transmission for passing through internet) of carrier format.

Computer readable recording medium storing program for performing can be distributed to the computer system being connected to each other by network, and with scattered Mode stores and executes computer-readable code.It in addition, can for the function program of the realization of embodiment, code and code segment It is readily concluded that with the programmer by present disclosure fields.

What aforementioned embodiments were merely exemplary, and should not be considered limiting present disclosure.The description is intended to Bright property rather than limitation claims scopes.To those skilled in the art, many replacements, modifications and variations It will be apparent.Feature, structure, method and other characteristics of illustrative embodiments described herein can groups in various ways It closes to obtain other and/or alternative illustrative embodiments.

Because the feature of the present invention can in a variety of forms be implemented in the case where not departing from its characteristic, should also manage Solution, unless otherwise stated, any details limitation that the above embodiment is not limited by the foregoing description, but should be appended Widely consider in the range of claims restriction, therefore, all changes and modification fallen within the scope of the claims Or the equivalent of such scope by the appended claims it is intended that included.

Claims

1. a kind of wireless power transmitter, including：

Include the power transmission unit of one or more transmitting coils；

Power conversion unit is configured to the intensity for the DC electric power that conversion applies from outside；

Driving unit is configured to the DC electric power that will apply using one or more inverters from the power conversion unit AC electric power is converted to, and the AC electric power is supplied to one or more transmitting coil；

Communication unit is configured to exchange information with external device (ED)；And

Controller is configured to be grouped to control charge mode based on the charge mode received by the communication unit,

Wherein, if charge mode is rapid charge pattern, the inverter is bridge-type inverter.

2. wireless power transmitter according to claim 1, wherein, the charge mode grouping further includes charge mode and changes Become operating frequency, and

Wherein, it is fixed pre- when the generation AC signals under the rapid charge pattern that the charge mode, which changes operating frequency, Determine operating frequency.

3. wireless power transmitter according to claim 1, wherein, it is steadily given birth to when under general low power charge pattern During into AC electric power, the controller is performed by the way that the general low power charge pattern is changed over the rapid charge pattern It charges.

4. wireless power transmitter according to claim 1, wherein, the charge mode grouping further includes charge mode and changes Control erroneous packet count value is stabilized, and

Wherein, if the number of the stability contorting erroneous packet continuously received is equal to or more than the charge mode and changes stabilization Erroneous packet count value is controlled, then the controller by general low power charge pattern by changing over the rapid charge pattern To perform charging.

5. a kind of wireless power receiver, including：

Receiving coil；

Communication unit is configured to extract grouping by demodulating the signal received by the receiving coil；And

Controller is configured to identify whether external device (ED) will be held by receiving extracted grouping from the communication unit Row rapid charge, and determine the need for changing currently performed charge mode,

Wherein, when needing to change charge mode, the controller generation includes the predetermined charging for the charge mode value to be changed Mode packet, and the charge mode generated grouping is transmitted to by the external device (ED) by the communication unit,

Wherein, if the charge mode value that charge mode grouping includes is value corresponding with rapid charge pattern, institute Controller is stated by the way that the general low power charge pattern for being arranged to acquiescence is changed over the rapid charge pattern to perform charging.

6. wireless power receiver according to claim 5, wherein, the charge mode grouping further includes charge mode and changes Become operating frequency, and

7. wireless power receiver according to claim 5, wherein, the charge mode grouping further includes charge mode and changes Control erroneous packet count value is stabilized, and

Wherein, if the number of the stability contorting erroneous packet continuously received is equal to or more than the charge mode and changes stabilization Erroneous packet count value is controlled, then the controller by the general low power charge pattern by changing over the rapid charge Pattern performs charging.

8. a kind of wireless charging side for being used to be wirelessly communicated to electric power in the wireless power transmitter of wireless power receiver Method, the wireless charging method include：

The grouping for initial electrical control is received after the power transmission stage is switched to；

Transmission notice supports the first grouping of rapid charge pattern；

Include the first respond packet of charge mode value from wireless power receiver reception；And

Charging is performed with the charge mode for corresponding to the charge mode value,

Wherein, when charging is performed under the charge mode corresponding to the charge mode value, by after a predetermined time Fixed operation frequency to perform charging under the rapid charge pattern.

9. a kind of wireless charging side for being used to be wirelessly communicated to electric power in the wireless power transmitter of wireless power receiver Method, the wireless charging method include：

Transmission notice supports the first grouping of rapid charge pattern；

Include the first respond packet of charge mode value from wireless power receiver reception；

Check whether the charge mode value corresponds to the rapid charge pattern；

If the charge mode value corresponds to the rapid charge pattern, inspection is generating AC by changing operating frequency Stability contorting erroneous packet whether is had been received by after signal；

In the case where receiving the special operating frequency of the stability contorting erroneous packet, the stability contorting mistake continuously received is checked Whether the count number of grouping is equal to or more than predetermined value；And

If the count number of the stability contorting erroneous packet continuously received is equal to or more than the predetermined value, pass through fixation Operating frequency to perform charging under the rapid charge pattern.

10. a kind of wireless charging side for being used to be wirelessly communicated to electric power in the wireless power transmitter of wireless power receiver Method, the wireless charging method include：

Charge mode grouping is received, the charge mode grouping includes the charging for being configured to value corresponding with rapid charge pattern Mode value；

It checks whether and supports the rapid charge pattern；

If supporting the rapid charge pattern as inspection result, transmit notice to the wireless power receiver and support institute State predetermined first grouping of rapid charge pattern；

Check by whether having been received by stability contorting erroneous packet after changing operating frequency to generate AC signals；