CN106067697A

CN106067697A - Perform the method and device of the wireless charging control of electronic installation

Info

Publication number: CN106067697A
Application number: CN201610255480.5A
Authority: CN
Inventors: 李其旻; 阿南德·萨慕斯
Original assignee: MediaTek Inc
Current assignee: MediaTek Inc
Priority date: 2015-04-24
Filing date: 2016-04-22
Publication date: 2016-11-02
Anticipated expiration: 2036-04-22
Also published as: CN106067697B

Abstract

This application provides the method and device of a kind of wireless charging control performing electronic installation.In the method, simple response by means of wireless charging device performs the control of this wireless charging, wherein this wireless charging device is in order to wirelessly to charge to this electronic installation, the method includes: receive at least one package, the information that wherein this at least one package is reported in order to the wireless charging carrying this electronic installation from this electronic installation；And control this wireless charging device and confirm this at least one package to produce at least one simple response.The method and apparatus that disclosed herein can be by simple one-way communication control program rather than the power control cycle continued operation of two-way messenger's wireless power transmission system, it can be ensured that overall efficiency, and can avoid the problem in prior art.

Description

Perform the method and device of the wireless charging control of electronic installation

Technical field

The present invention relates to the exotic detecting (foreign of the wireless power transmission system of such as wireless charging system Object detection, FOD), more specifically, relate to a kind of method for carrying out wireless charging control and Relevant apparatus.

Background technology

Owing to exotic may jeopardize the personal safety of the user of wireless charging system, therefore exotic detecting Become the important issue of wireless charging technical field.For example, said exotic can be for example number Word multifunctional optical disk (digital versatile disc, DVD), it is generally of relatively thin metal level.Due to whirlpool The event of electric current (eddy current), above-mentioned thin metal layer is easy to be heated, at this during wireless charging Under situation, DVD can be considered dangerous exotic.Therefore, it when having detected exotic, is desirable to Enough stop wireless charging.

According to prior art, the existing exotic method for detecting based on power attenuation detecting would generally be answered It for induction type wireless charging system, rather than is applied to resonant wireless charging system.At existing exotic In the case that method for detecting is applied to induction type wireless charging system, this existing exotic method for detecting can be used Detect the exotic close to this induction type wireless charging system.But, in this existing exotic detecting side In the case that method is applied to resonant wireless charging system, some problems may be met with.For example, may be used It is observed that scenario described below, mobile phone carries out wireless charging under laterally disposed (landscape orientation) Power attenuation in (the first situation), with this mobile phone at placed longitudinally (portrait orientation) and It is placed around under the DVD of 8cm size carrying out between the power attenuation under wireless charging (the second situation) May only have minimum difference, this means that and be difficult to judge that the wireless charging of mobile phone belongs to by power attenuation Any situation in above-mentioned two situations.Consequently, it is possible to mistake may be produced when carrying out exotic detecting Warning (for example actually belong to the first situation but be mistaken for the second situation), or be possible to make Become to detect and unsuccessfully (for example actually belong to the second situation but be mistaken for the first situation).

In view of the safety of user, there is a need to prevent the situation that above-mentioned detecting is failed.In addition, it is contemplated that make The convenience of user, also there is a need to the situation considering to prevent above-mentioned generation mistake to warn in the lump.Therefore, if will be existing When some exotic method for detecting are implemented in resonant wireless charging system, at the machine reducing above-mentioned mistake warning Rate and reduce and be bound to compromise between the failed probability of above-mentioned detecting.Therefore, there is a need to a kind of new Method improves the wireless charging control for wireless charging system.

Content of the invention

In view of this, a kind of method of wireless charging control performing electronic installation is embodiments provided And device, to solve the problems referred to above.

Embodiments provide a kind of method of the wireless charging performing electronic installation control, wherein by Perform the control of this wireless charging in the simple response of wireless charging device, wherein this wireless charging device in order to Wirelessly charging this electronic installation, the method includes: receive at least one package from this electronic installation, wherein The information that this at least one package is reported in order to the wireless charging carrying this electronic installation；And control this wireless charging Electric installation confirms this at least one package to produce at least one simple response.

The another embodiment of the present invention provides the device of a kind of wireless charging control performing electronic installation, wherein Simple response by means of wireless charging device performs the control of this wireless charging, wherein this wireless charging device In order to wirelessly to charge this electronic installation, this device includes at least a portion of this wireless charging device, should Device includes: conveyer, is positioned at this wireless charging device, and wherein this conveyer is in order to output transport electricity Stream；And control circuit, it is positioned at this wireless charging device and is coupled to this conveyer, wherein this control electricity The power output winding that road is arranged by this wireless charging device receives at least one package from this electronic installation, The information that wherein this at least one package is reported in order to the wireless charging carrying this electronic installation, wherein this control electricity Road is further configured to control this wireless charging device simply should by utilizing this conveyer to produce at least one Answer and confirm this at least one package.

The method and apparatus that disclosed herein can be by simple one-way communication control program rather than both-way communication Make the power control cycle continued operation of wireless power transmission system.Compared with prior art, the present invention is carried The method going out and relevant apparatus can ensure that overall efficiency, and the problem in prior art can be avoided (such as manufacturing cost Increase and the channel in frequency band is not enough).

Brief description

Fig. 1 is the schematic diagram of the device for carrying out wireless charging control according to embodiments of the present invention；

Fig. 2 is the schematic diagram of wireless power transmission system according to embodiments of the present invention；

Fig. 3 is the flow chart of the method for carrying out wireless charging control according to embodiments of the present invention；

Fig. 4 is the cumulative index involved by the method shown in Fig. 3 according to embodiments of the present invention (multi-indexes) framework is controlled；

Fig. 5 is the cumulative index control cage involved by the method shown in Fig. 3 according to another embodiment of the present invention The schematic diagram of structure；

Fig. 6 is showing of the exotic detection area involved by the method shown in Fig. 3 according to embodiments of the present invention It is intended to；

Fig. 7 is the exotic detecting policy control involved by the method shown in Fig. 3 according to embodiments of the present invention The schematic diagram of framework；

Fig. 8 is that the wireless charging involved by the method shown in Fig. 3 according to embodiments of the present invention restores flow process；

Fig. 9 is the stochastic model device control cage involved by the method shown in Fig. 3 according to embodiments of the present invention The schematic diagram of structure；

Figure 10 is the stable state control framework involved by the method shown in Fig. 3 according to embodiments of the present invention；

Figure 11 is the emergency defense controls frame involved by the method shown in Fig. 3 according to embodiments of the present invention Structure；

Figure 12 be the poll involved by method 300 (polling) shown in Fig. 3 according to embodiments of the present invention and Simple response control program schematic diagram；

Figure 13 performs exemplified with the simple response by means of wireless charging device according to another embodiment of the present invention The flow chart of wireless charging control method 900 of electronic installation；

Figure 14 is exemplified with the simple response control program of method 900 shown in Figure 13 according to embodiments of the present invention Schematic diagram；

The schematic diagram of the simple response exemplified with method 900 shown in Figure 13 according to embodiments of the present invention for the Figure 15；

Figure 16 according to another embodiment of the present invention exemplified with the signal of the simple response of method 900 shown in Figure 13 Figure；

Figure 17 according to another embodiment of the present invention exemplified with the signal of the simple response of method 900 shown in Figure 13 Figure；

Figure 18 according to another embodiment of the present invention exemplified with the signal of the simple response of method 900 shown in Figure 13 Figure.

Detailed description of the invention

In order to make technical problem solved by the invention, technical scheme and beneficial effect clearer, with Lower combination drawings and Examples, are further elaborated to the present invention.It should be appreciated that described herein Specific embodiment only in order to explain the present invention, be not intended to limit the present invention.

The embodiment of the present invention, employs some vocabulary in the middle of specification and claims and censures specifically Assembly.Those skilled in the art are it is to be appreciated that hardware manufacturer may be called same by different nouns The assembly of sample.This specification and claims book is not used as distinguishing in the way of assembly by the difference of title, But it is used as the criterion distinguished with assembly difference functionally.Work as in specification and claims in the whole text In mentioned " including " be open term, therefore " including but not limited to " should be construed to.In addition, " coupling Connect " any directly and indirectly electrical connection is included at this.Therefore, if first device couples described in literary composition In the second device, then represent this first device and can directly be electrically connected in this second device, or by other dresses Put or connection means are electrically connected indirectly to this second device.

The method and apparatus of the embodiment of the present invention can correctly determine whether there are and detect exotic, and can be just Really determine that the exotic detecting is dangerous exotic or the exotic of benign, therefore can avoid existing The problem that mistake warns or detecting is wrong that technology is faced.Specifically, it at this wireless charging conveyer is In the case of resonant wireless charging conveyer, the method for the embodiment of the present invention and device can be detectd by admittance Survey (admittance detection) and/or impedance detecting suitably carries out exotic detecting, and can be at needs When, temporarily cease wireless charging program, therefore can prevent dangerous exotic from causing in wireless charging program Catch fire, and can prevent the exotic of benign from interrupting this wireless charging program.Consequently, it is possible to can really simultaneously Protect the usefulness of this wireless charging conveyer and the personal safety of the user of this wireless charging conveyer.

Refer to Fig. 1, be showing of the device 100 for carrying out wireless charging control according to embodiments of the present invention Being intended to, wherein device 100 can include at least a part of (for example part or all of) of wireless charging device.Lift For example, device 100 can include the described wireless charging device of part, and especially device 100 can include At least one hardware circuit, at least one integrated circuit (integrated in such as described wireless charging device Circuit, IC) and relative circuit.And for example, device 100 can be whole described wireless charging Denso Put.Again for example, device 100 can include system, and described system includes described wireless charging device (example As included the wireless power transmission system of described wireless charging device).For example, but not in order to limit, Wireless charging device can include wireless charging conveyer (for succinctly, it is possible to be considered as conveyer), such as passes Send plate.For example, above-mentioned wireless charging conveyer (such as transfer plate) can be used for wireless to wireless charging Electricity receiver (for succinctly, it is possible to be considered as receiver, such as electronic apparatus) is charged.Citing For, described electronic apparatus may include but be not limited to mobile phone (such as multifunctional mobile telephone), individual Personal digital assistant (personal digital assistant, PDA) and personal computer, (laptop) such as on knee Computer.

As it is shown in figure 1, device 100 can include at least one (for example one or more) circuit for detecting, The present embodiment can briefly be considered as circuit for detecting 110, and can separately include indexing generation module 120, its bag Include a group index and produce circuit, be coupled at least one circuit for detecting above-mentioned (all detecting electricity as shown in Figure 1 Road 110).For example, the quantity indexing generation circuit that this group index produces in circuit can be equal to M, its Middle symbol M can represent the integer more than 1.It is to say, this group index produces circuit can include M index Produce circuit 122-1,122-2 ... and 122-M.In the present embodiment, outside device 100 can separately include Come thing detecting (foreign object detection, FOD) policy module 130, wherein exotic detecting strategy Module 130 is coupled to this group index and produces circuit, and such as M index produces circuit 122-1,122-2 ..., And 122-M.

According to the present embodiment, at least one circuit for detecting above-mentioned (all circuit for detecting 110 as shown in Figure 1) is For carrying out current sense and detecting voltage, monitor the driving electric current in described wireless charging conveyer respectively I_DRV(not being illustrated in Fig. 1) and driving voltage V_DRV(not being illustrated in Fig. 1), wherein drives electric current I_DRVWith drive Dynamic voltage V_DRVIt is the power output winding (not being illustrated in Fig. 1) for driving described wireless charging conveyer. Additionally, this group index produces circuit (such as M index produces circuit 122-1,122-2 ..., and 122-M) It is at least respectively according to driving electric current I_DRVWith driving voltage V_DRVProduce a group index, such as M Index 124-1,124-2 ... and 124-M.Specifically, this group index can include that power attenuation indexes, The power attenuation operating for the wireless charging pointed out performed by this wireless charging conveyer, and can be further Including admittance relative index (admittance-related index), it is corresponding to driving electric current I_DRVElectric with driving Pressure V_DRVRatio or driving electric current I_DRVWith driving voltage V_DRVThe inverse of ratio.For example, exist This admittance relative index is corresponding to driving electric current I_DRVWith driving voltage V_DRVRatio in the case of, this admittance Relative index can index (admittance deviation index) for admittance deviation, it is possible to is referred to as " admittance index ". Again for example, in admittance relative index corresponding to driving electric current I_DRVWith driving voltage V_DRVRatio fall In the case of number, admittance relative index can index for impedance deviation, it is possible to is referred to as " impedance index ".Additionally, outward Carrying out thing detecting policy module 130 is for carrying out wireless charging exotic detecting according to this group index, such as M index produces circuit 122-1,122-2 ..., and 122-M produced index 124-1,1242-2 ..., And 1242-M.

As described above, this group index can include that power attenuation indexes, power attenuation indexes in order to point out described nothing The power attenuation of wireless charging operation performed by conveyer for the line charging, this group index can separately include that admittance is related to Index, admittance relative index is corresponding to driving electric current I_DRVWith driving voltage V_DRVRatio or driving electric current I_DRVWith driving voltage V_DRVThe inverse of ratio.But, it is more than only used as citing, not in order to limit this Bright category.In some examples, this group index can separately include corresponding to driving electric current I_DRVElectric current be related to rope Draw.

In some examples, this group index can include that power attenuation indexes, in order to point out this wireless charging transmission The power attenuation of the wireless charging operation performed by device, and can separately include corresponding to driving electric current I_DRVElectric current Relative index, there is no need to produce admittance relative index herein, and this admittance relative index is corresponding to driving electric current I_DRVWith driving voltage V_DRVRatio or driving electric current I_DRVWith driving voltage V_DRVThe inverse of ratio.

In some examples, this group index can include admittance relative index, corresponding to driving electric current I_DRVWith driving Voltage V_DRVRatio or driving electric current I_DRVWith driving voltage V_DRVThe inverse of ratio, and can separately wrap Include corresponding to driving electric current I_DRVElectric current relative index, herein there is no need produce power attenuation index, this work( Rate loss index is in order to point out the power attenuation of the wireless charging operation performed by described wireless charging conveyer.

Refer to Fig. 2, Fig. 2 is the schematic diagram of wireless power transmission system 200 according to embodiments of the present invention. As in figure 2 it is shown, wireless power transmission system 200 can include that wireless charging conveyer 210 (uses " Tx " in fig. 2 Illustrate) and wireless charging receiver 220 (being illustrated by " Rx " in fig. 2), wherein shown in Fig. 2 Wireless charging conveyer 210 can be as the example of the wireless charging conveyer described in the embodiment of Fig. 1, and nothing Line charging receiver 220 can be as the example of the wireless charging receiver described in the embodiment of Fig. 1.

According to the present embodiment, wireless charging conveyer 210 includes the circuit for detecting 110 shown in Fig. 1, and this reality Execute the circuit for detecting 110 in example and can include potentiometer 112 (being denoted as " VM " in fig. 2) and galvanometer. For example, the galvanometer of the present embodiment can include potentiometer 114 (being denoted as " VM " in fig. 2) and Inductive reactance R_S.Except circuit for detecting 110, wireless charging conveyer 210 can include drive circuit 212, Distribution road 214 and power output winding 218, wherein the power output winding 218 shown in Fig. 2 can be considered figure The example of the power output winding described in the embodiment of 1.Additionally, wireless charging receiver 220 can include power Input coil 228, and can separately include wireless charging acceptor circuit, in order to carry out wireless charging control, its Middle wireless charging acceptor circuit can include some assemblies, such as some hardware circuits.For example, moving Dynamic electronic installation (electronic apparatus described in the embodiment of such as Fig. 1) does not have by wireless charging (example Such electronic apparatus does not have any work(for wirelessly receiving power from wireless charging conveyer 210 Rate input coil) ability in the case of, wireless charging receiver 220 can be as charging module, and can This electronic apparatus is charged from the power that wireless charging conveyer 210 obtains by using.In detail For Xi, if desired, charging module can be electrically connected to this electronic apparatus, with by use wireless Being received from least a portion (for example some or all of) of the power of wireless charging conveyer 210, it is right to come This electronic apparatus is charged, wherein when do not need by this way again to this electronic apparatus charge When, this charging module can be separated from this electronic apparatus.It is more than used only as citing, not in order to limit Determine scope of the invention.In some examples, in the electronic apparatus (movement of the embodiment of such as Fig. 1 Electronic installation) have by wireless charging ability in the case of, wireless charging receiver 220 can include all This electronic apparatus.Then, except above-mentioned wireless charging acceptor circuit, wireless charging receiver 220 Can separately include at least one (such as one or more) processor, relative control circuit and at least Individual storage module (such as hard disk (hard disk drive, HDD)), and/or non-voltile memory (non-volatile (NV) memory, such as flash memory).

In the present embodiment, drive circuit 212 is for producing driving voltage V_DRVWith driving electric current I_DRV, And utilize driving voltage V_DRVWith driving electric current I_DRVDrive power output line by match circuit 214 Circle 218, with outside wirelessly power output to wireless charging conveyer 210 at least one (such as one or Multiple) wireless charging receiver, all wireless charging receivers 220 as shown in Figure 2.As in figure 2 it is shown, it is electric Two input endpoints of pressure meter 112 are respectively coupled to two output N11 and N12 of drive circuit 212, And in order to detect the driving voltage V between two output N1 and N12_DRV.Additionally, potentiometer 114 Two inputs be coupled to inductive reactance R_STwo ends, and be used for detecting inductive reactance R_SElectricity between two ends Pressure reduction.Thereby, circuit for detecting 110 can be according to inductive reactance R_SResistance and inductive reactance R_SThe electricity at two ends Pressure reduction carries out calculating and operates, especially, and can be by inductive reactance R_STwo ends voltage difference remove upper inductive reactance R_SResistance, and with its result be used as to drive electric current I_DRVDetecting.In implementation, match circuit 214 Can include some impedance components, such as some electric capacity, the power to strengthen power output winding 218 exports effect Energy.Wherein inductive reactance R_SOne end couple with an output N11 of drive circuit 212, the other end with One input N21 of match circuit 214 couples, another input N22 of match circuit 214 with drive Another output N12 of dynamic circuit 212 couples, two output N31 and N32 of match circuit 214 It is respectively coupled to two inputs of power output winding 218.

In order to be better understood from, with regard to some detailed implementation of above-mentioned wireless charging acceptor circuit To be described below.Wireless charging acceptor circuit can include match circuit and rectifier, this match circuit with And rectifier is positioned on the power transfer path of described wireless charging acceptor circuit.For example, this coupling Circuit can include some impedance components, such as some electric capacity, in order to the power of reinforcing power input coil 228 Input usefulness, and the exchange that this rectifier can will be got from power input line circle 228 by this match circuit (alternating current, AC) power is converted to direct current (direct current, DC) power, especially Being converted to DC output voltage, wherein the DC output voltage from the output of this rectifier can be by this electronic apparatus Used.It is more than used only as citing, not in order to limit scope of the invention.Again for example, described nothing Line charging acceptor circuit can separately include low pressure drop (low dropout, LDO) voltage-stablizer, this low pressure drop voltage stabilizing Device is also disposed on the power transfer path of described wireless charging acceptor circuit, and this low dropout voltage regulator is used So that voltage stabilizing is carried out from the VD of this rectifier to output, to produce the power output after voltage stabilizing, with Come for this electronic apparatus.In some examples, wireless charging acceptor circuit can include detecting mould Block, its framework similar in appearance to the circuit for detecting 110 shown in Fig. 2, and as detecting or can estimate wireless charging (such as wireless charging receiver 220 is from 210 nothings of wireless charging conveyer for the reception power of receiver 220 Line ground receives the power of coming).Specifically, wireless charging receiver 220 can pass through power input line circle 228 Transmit at least one (for example one or more) package to wireless charging conveyer 210, wherein above-mentioned extremely A few package can carry the reception power information of the reception power of instruction wireless charging receiver 220.So One, wireless charging conveyer 210 can be received from wireless charging receiver by power output winding 218 At least one package above-mentioned of 220, and can come according to the reception power information that at least one package above-mentioned carries Determine the reception power of wireless charging receiver 220.

Framework according to Fig. 2, the device 100 of the present embodiment can include at least a part of (such as portion Part or whole) wireless power transmission system 200.For example, device 100 can include a part of nothing Linear heat generation rate transmits system 200, especially can include a part of wireless charging conveyer 210, that is device 100 Some assemblies in the wireless charging conveyer 210 shown in Fig. 2 can be included.Again for example, device 100 Can include a part of wireless power transmission system 200, especially, device 100 can be whole wireless charging Conveyer 210, that is device 100 can include all component in wireless charging conveyer 210.Illustrate again For, device 100 can be whole wireless power transmission system 200.

Additionally, the framework according to Fig. 2, electrical power can from left to right and one-level level ground transmits, for example defeated Enter to the dc power of drive circuit 212 (the such as dc power for this electronic apparatus) step by step Being sent to the wireless charging acceptor circuit of the rightmost side, wherein some level of this framework can power loss. When the wireless charging transmission having exotic (such as metal object or magnetic bodies) suddenly to fall within the present embodiment The vicinity of device 210 and start when wireless charging conveyer 210 energy absorption, wireless charging receiver 220 (especially its interior controller) can detect or estimate the reception power of wireless charging receiver 220 (for example The power that wireless charging receiver 220 comes from wireless charging conveyer 210 wireless receiving) and by being related to This wireless charging conveyer 210 is sent by assembly to be reported to the reception power that should receive power, and this is related to Communication module in assembly e.g. wireless charging receiver 220, the coupling electricity of wireless charging receiver 220 Road, wireless charging receiver 220 power input line circle the 228th, wireless charging transmitter 210 power output Coil 218, the report of this reception power e.g. receives power report package, at least one package such as above-mentioned Any package, wherein this reception power report package can have the estimated value of this reception power.Consequently, it is possible to Device 100 can be according to driving electric current I_DRV, driving voltage V_DRVAnd the reception of wireless charging receiver 220 Power carries out power attenuation detecting, to produce above-mentioned power attenuation index.Additionally, wireless charging conveyer 210 (the exotic detecting policy modules 130 especially in the device 100 shown in Fig. 1) can be according to this group rope Draw (such as M index produces circuit 122-1,122-2 ..., and 122-M) and carry out above-mentioned wireless Charging exotic detecting.Under the control of exotic detecting policy module 130, wireless charging conveyer 210 Visual demand temporarily stops to wireless charging receiver 220 power output, and then prevents in prior art Mistake warning or the failed problem of detecting.

Specifically, in the case that wireless charging conveyer 210 is resonant wireless charging conveyer, dress Put outside 100 (and its related operating methods) can detect suitably by admittance detecting and/or impedance and carry out Carry out thing detecting, and can temporarily regard demand stopping wireless charging program, to prevent the exotic of danger in nothing Line charging procedure causes and catches fire, and prevent the exotic interruption wireless charging program of benign.Such one Come, not only may insure that wireless power transmission system 200 (wireless charging conveyer 210 especially therein) Usefulness, it is also possible to guarantee user's (wireless charging fax especially therein of wireless power transmission system 200 Send the user of device 210) personal safety.

Fig. 3 is the flow chart of the method 300 for carrying out wireless charging control according to embodiments of the present invention. Method 300 shown in Fig. 3 can be applied to the device 100 shown in Fig. 1 (shown in the embodiment of especially Fig. 2 Wireless power transmission system 200), and can be applicable to its interior exotic detecting policy module 130, side Details are as follows for method 300.

In the step 310, at least one circuit for detecting above-mentioned (circuit for detecting 110 in such as Fig. 1 or Fig. 2) Above-mentioned current sense and above-mentioned detecting voltage can be carried out, to monitor respectively in wireless charging conveyer 210 Drive electric current I_DRVWith driving voltage V_DRV, wherein drive electric current I_DRVWith driving voltage V_DRVFor driving nothing The power output winding 218 of line charging conveyer 210.

In step 320, this above-mentioned group index produces circuit, and (all M indexes as shown in Figure 1 produce Circuit 122-1,122-2 ..., and 122-M) can be according at least to driving electric current I_DRVWith driving voltage V_DRV Produce respectively this group index (such as M index 124-1,124-2 ..., and 124-M).Citing comes Saying, this group index can include for pointing out wireless charging behaviour's work that wireless charging conveyer 210 is carried out The power attenuation index of rate loss, and can separately include corresponding to driving electric current I_DRVWith driving voltage V_DRV's Ratio and driving electric current I_DRVWith driving voltage V_DRVRatio inverse in the admittance relative index of any one. It is more than used only as citing, not in order to limit scope of the invention.In some examples, this group index can be another Including corresponding to driving electric current I_DRVElectric current relative index.

In some examples, this group index can include for pointing out that wireless charging conveyer 210 is carried out wireless The power attenuation index of the power attenuation of charging operations, and can separately include corresponding to driving electric current I_DRVElectric current Relative index, there is no need to produce corresponding to driving electric current I herein_DRVWith driving voltage V_DRVRatio and Drive electric current I_DRVWith driving voltage V_DRVRatio inverse in the admittance relative index of any one.

In some examples, this group index can include corresponding to driving electric current I_DRVWith driving voltage V_DRVRatio Value and driving electric current I_DRVWith driving voltage V_DRVRatio inverse in the admittance relative index of any one, And can separately include corresponding to driving electric current I_DRVElectric current relative index, herein there is no need produce in order to point out The power attenuation index of the power attenuation of the wireless charging operation that wireless charging conveyer 210 is carried out.

In a step 330, exotic detecting policy module 130 can be according to this group index (such as M index 124-1,124-2 ..., and 124-M) carry out the detecting of above-mentioned wireless charging exotic.Specifically, Exotic detecting policy module 130 can according to one group of threshold value and one group of exotic detecting policy control parameter it Between predetermined relationship, determine corresponding to this group exotic detecting policy control parameter one group of threshold value, with And this group index can be compared to produce one group of comparative result with this group threshold value respectively, and can be according to this Group comparative result produces wireless charging control signal (the exotic detecting strategy mould for example shown in Fig. 1 separately The output of block 130), to control whether wireless charging to be temporarily ceased.For example, this group threshold value and this group Predetermined relationship between exotic detecting policy control parameter is available from wireless charging conveyer 210 in advance The database of preparation (or in wireless charging conveyer 210 in advance preparation look-up table (look up table, LUT))。

On the implementation, in order to make for exotic detecting policy module 130 at least one (such as one or Multiple) correction of exotic detecting strategy can have more preferable plasticity, and exotic detecting policy module 130 can Including at least one (for example one or more) database above-mentioned, and at least one database above-mentioned may be used to Store the policy information of at least one exotic above-mentioned detecting strategy.Specifically, according to above-mentioned at least one The policy information of exotic detecting strategy, is such as stored in the policy information of at least one database above-mentioned, outward Carry out thing detecting policy module 130 and be dynamically adjusted at least one (for example one or more) adjustable threshold, This at least one adjustable threshold can be used for the above-mentioned wireless charging exotic detecting carrying out according to this group index. It is more than used only as citing, not in order to limit scope of the invention.In some examples, above-mentioned at least one Database may be disposed at outside exotic detecting policy module 130, and exotic detecting policy module 130 The policy information of at least one exotic above-mentioned detecting strategy can be obtained from least one database above-mentioned, wherein At least one database above-mentioned may be disposed in wireless charging conveyer 210.

In some examples, exotic detecting policy module 130 can include at least one (such as one or many Individual) look-up table, for example aforesaid look-up table, and at least one look-up table above-mentioned can be used to store above-mentioned extremely The policy information of few exotic detecting strategy.Specifically, detect according at least one exotic above-mentioned The policy information (being such as stored in the policy information of at least one look-up table above-mentioned) of strategy, exotic detects plan Slightly module 130 is dynamically adjusted at least one (for example one or more) adjustable threshold above-mentioned, and this is at least One adjustable threshold is for the above-mentioned wireless charging exotic detecting carrying out according to this group index.Below only use For example, not in order to limit scope of the invention.In some examples, at least one look-up table above-mentioned can Be arranged at exotic detecting policy module 130 outside, and exotic detecting policy module 130 can from above-mentioned to A few look-up table obtains the policy information of at least one exotic above-mentioned detecting strategy, and wherein above-mentioned at least one Individual look-up table may be disposed among wireless charging conveyer 210.

In some examples, exotic detecting policy module 130 can include above-mentioned at least one (such as one Or multiple) database and at least one (for example one or more) look-up table above-mentioned, and above-mentioned at least one Individual database and at least one look-up table above-mentioned may be used to store at least one exotic above-mentioned detecting strategy Policy information.Specifically, detect the policy information of strategy according at least one exotic above-mentioned, such as store up It is stored in the policy information at least one database above-mentioned and the plan being stored at least one look-up table above-mentioned Slightly information, exotic detecting policy module 130 is dynamically adjusted above-mentioned at least one (such as one or many Individual) adjustable threshold, this at least one adjustable threshold can be used for the above-mentioned wireless charging carrying out according to this group index Electricity exotic detecting.It is more than used only as citing, not in order to limit scope of the invention.In some examples, At least one database above-mentioned and/or at least one look-up table above-mentioned (at least one database for example above-mentioned and/or At least one look-up table above-mentioned) may be disposed at outside exotic detecting policy module 130, and exotic detecting Policy module 130 can be above-mentioned at least from least one database above-mentioned and at least one look-up table above-mentioned acquirement The policy information of one exotic detecting strategy, wherein at least one database above-mentioned and above-mentioned at least one look into Table is looked for may be disposed among wireless charging conveyer 210.

In some examples, in order to make for exotic detecting policy module 130 at least one (such as one Individual or multiple) correction of exotic detecting strategy can have more preferable plasticity, and exotic detects policy module 130 Can be embodied in the process circuit running batch processing code, such as controller or processor, wherein this group journey Sequence code is ready in advance and the memory module that can be stored in advance in wireless charging conveyer 210 (for example Non-voltile memory (non-volatile (NV) memory, such as flash memory), or hard disk (hard disk drive, HDD)。

Note that while that Fig. 3 lists the associative operation of step 310～330 respectively, but be used only as citing, and Not in order to limit scope of the invention.According to some change case of the present embodiment, at least a part of (such as portion Part or whole) operation of step 310, at least some (for example partially or in whole) steps 320 Operate, and/or the operation of the step 330 of at least a part of (for example partially or in whole) can be carried out simultaneously. For example, the operation of at least a part of (for example partially or in whole) step 310 and at least one The operation of (for example partially or in whole) step 320 of part can be carried out simultaneously.Again for example, at least one The operation of (for example partially or in whole) step 320 of part and at least a part of (for example part or Whole) operation of step 330 can carry out simultaneously.

In order to be better understood from, some the thin portion implementation with regard to this group index in step 320 are as follows. With regard to above-mentioned power attenuation index, device 100 can be according to driving electric current I_DRVWith driving voltage V_DRVDetermine From the charge power of wireless charging conveyer 210 output, (for example wireless charging conveyer 210 is with wireless side Formula exports the power of at least one wireless charging receiver above-mentioned (such as wireless charging receiver 220)), The charge power wherein being exported by wireless charging conveyer 210 i.e. can be considered that delivering power (in simple terms, may be used It is considered as the Tx power described in some embodiments).For example, device 100 can drive electric current by calculating I_DRVWith driving voltage V_DRVProduct determine delivering power.Except delivering power, device 100 can be according to coming Receive power report from least one of at least one wireless charging receiver above-mentioned (for example above-mentioned from wireless The reception power report of charging receiver 220) determine the reception of at least one wireless charging receiver above-mentioned Power, wherein the reception power of at least one wireless charging receiver above-mentioned can be considered receiver power (one A little embodiments are illustrated with Rx power).Additionally, device 100 (especially M index produce circuit 122-1, 122-2 ..., and one of 122-M index produces circuit, such as index produces circuit 122-1) can (for example wireless charging conveyer 210 is with nothing for the charge power being exported further accordance with wireless charging conveyer 210 The mode of line exports to the work(of at least one wireless charging receiver above-mentioned (such as wireless charging receiver 220) Rate) and produce power attenuation index according to the reception power of at least one wireless charging receiver above-mentioned.? In some embodiments, simply from the point of view of, power attenuation index i.e. can be considered power attenuation.

With regard to aforesaid admittance relative index, in this admittance relative index corresponding to driving electric current I_DRVElectric with driving Pressure V_DRVRatio in the case of, device 100 can be according to from least one wireless charging receiver above-mentioned At least one reception power report above-mentioned determines the reception power of at least one wireless charging receiver above-mentioned, And can receive according to standard (normalized) conveyer admittance parameter and at least one wireless charging above-mentioned The predetermined relationship receiving between power of device, determines corresponding at least one wireless charging receiver above-mentioned Reception power standard conveyer admittance parameter (from the point of view of simply, can be considered the admittance of standard Tx).Citing comes Say, between the reception power of this standard conveyer admittance parameter and at least one wireless charging receiver above-mentioned Predetermined relationship can draw from database, the database in such as wireless charging conveyer 210 or wireless charging Another look-up table in conveyer 210.Produce additionally, this group index produces one of circuit particular index (such as M index produces one of circuit 122-1,122-2 ..., and 122-M index and produces circuit Raw circuit, such as index produce circuit 122-3) driving electric current I can be calculated_DRVWith driving voltage V_DRVBetween Difference between ratio and above-mentioned standard conveyer admittance parameter, to produce this admittance relative index, wherein Drive electric current I_DRVWith driving voltage V_DRVRatio can be considered that conveyer admittance (is simply in some implementations " Tx admittance ").Note that to be better understood from, in certain embodiments, be related to corresponding to this admittance The driving electric current I of index_DRVWith driving voltage V_DRVBetween ratio can be considered the change situation (current of electric current deviation)。

Additionally, with regard to above-mentioned admittance relative index, in this admittance relative index corresponding to driving electric current I_DRVWith drive Dynamic voltage V_DRVBetween ratio reciprocal in the case of, device 100 can be according to deriving from least one nothing above-mentioned At least one reception power report above-mentioned of line charging receiver, determines that at least one wireless charging above-mentioned connects Receive the reception power of device, and can be according to standard conveyer impedance parameter and at least one wireless charging above-mentioned The predetermined relationship receiving between power of receiver, determines to connect corresponding at least one wireless charging above-mentioned Receive the standard conveyer impedance parameter (illustrating with the impedance of standard Tx) of the reception power of device.For example, Making a reservation between the reception power of this standard conveyer impedance parameter and at least one wireless charging receiver above-mentioned Relation is available from database, the database in such as above-mentioned wireless charging conveyer 210 or wireless charging fax Send another look-up table in device 210.Additionally, this group index produces one of circuit particular index produces electricity (such as M index produces circuit 122-1, some index in 122-2 ..., and 122-M produces on road Raw circuit, such as index produces circuit 122-3) driving electric current I can be calculated_DRVWith driving voltage V_DRVBetween Difference between the standard conveyer impedance parameter reciprocal and above-mentioned of ratio, produces this admittance relative index, Wherein drive electric current I_DRVWith driving voltage V_DRVBetween inverse (the i.e. driving voltage V of ratio_DRVWith driving Electric current I_DRVBetween ratio) can be considered conveyer impedance (being illustrated in certain embodiments) by Tx impedance. Note that to be better understood from, in certain embodiments, corresponding to driving electric current I_DRVWith driving voltage V_DRVBetween this reciprocal admittance relative index of ratio can be considered impedance variations.

With regard to above-mentioned electric current relative index, it is noted that this electric current relative index is different from this admittance relative index. Device 100 can be according at least one the reception power report above-mentioned deriving from least one wireless charging receiver above-mentioned Accuse the reception power determining at least one wireless charging receiver above-mentioned, and electric current can be transmitted according to standard Parameter and the predetermined relationship receiving between power of at least one wireless charging receiver above-mentioned, determine correspondence In at least one wireless charging receiver above-mentioned reception power standard transmit current parameters (also can be considered mark Quasi-Tx electric current).For example, this standard transmits current parameters and at least one wireless charging receiver above-mentioned The predetermined relationship receiving between power be available from database, the data in such as wireless charging conveyer 210 Another look-up table in storehouse, or wireless charging conveyer 210.Additionally, this group index produces in circuit One particular index produces circuit, and (such as M index produces circuit 122-1,122-2 ..., and 122-M In index produce circuit, such as index produce circuit 122-2) can calculate driving electric current I_DRVWith above-mentioned standard Transmit the difference between current parameters, to produce this electric current relative index, wherein drive electric current I_DRVCan be considered biography Power transmission stream (is also illustrated with Tx electric current) in certain embodiments.Note that to be better understood from, In certain embodiments, electric current relative index can be considered the change situation of electric current.

According to some embodiments, device 100 can be according at least a part of comparison knot in this group comparative result Fruit produces warning control signal, and wherein this warning control signal is in order to control wireless charging conveyer 210 Warning user interface, to point out exotic for dangerous exotic or the exotic of benign.For example, Above-mentioned warning user interface can include that (but being not limited to) at least one (for example one or more) are luminous Diode (light emitting diode, LED), wherein this at least one LED can be used as warning LED.

According to some embodiments, above-mentioned this group exotic detecting policy control parameter can include receiving power ginseng Number, wherein receives the reception power corresponding at least one wireless charging receiver above-mentioned for the power parameter.In detail For, this group exotic detecting policy control parameter can separately include wireless charging receiver count parameter, wherein Described wireless charging receiver count parameter represents the wireless charging at least one wireless charging receiver above-mentioned The quantity of receiver.For example, this group exotic detecting policy control parameter can separately include that at least one fills Putting type parameter, wherein at least one type of device parameter above-mentioned is corresponding to the biography of wireless charging conveyer 210 Send device type (illustrating with Tx type in certain embodiments), or at least one wireless charging above-mentioned connects Receive at least one receiver types (being illustrated in certain embodiments) of device, such as wireless charging by Rx type The receiver types of electricity receiver 220.

According to some embodiments, the specific wireless charging of one of at least one wireless charging receiver above-mentioned Receive device and can determine at least one random value, at least one nothing of the receiver that charges with regard to this specific wireless with control The time point that the package of line charging report transmits.Additionally, according at least one random value above-mentioned, this specific nothing Line charging receiver can send at least one random phase and postpone package, and wherein this at least one random phase is prolonged In slow package, each random phase delay package can have a series of time slot (slot) being associated with along time shaft In time slot random phase postpone, and at least one random phase above-mentioned postpone package can be loaded with above-mentioned at least The information of one wireless charging report.Additionally, device 100 can be to the package of the multiple packages in predetermined period Information (for example aforesaid multiple reception power report packages) carries out cumulative to produce accumulated value, and wherein these are many Individual package includes that at least one random phase above-mentioned being sent by this specific wireless charging receiver postpones package, And the length of this predetermined period is more than or equal to the twice of the time span of this time slot.Additionally, device 100 can Determine above-mentioned wireless charging receiver count parameter according to this accumulated value.Specifically, device 100 Operation can be filtered to this accumulated value and produce described wireless charging receiver count parameter.

According to some embodiments, device 100 can access the detecting of prior ready exotic and control database. Additionally, this exotic detecting control database can point out on coordinate plane (Rx_ power, Tx_ admittance) to A few presumptive area, such as exotic detection area, wherein coordinate Rx_ power can represent above-mentioned at least one The reception power of wireless charging receiver and coordinate Tx_ admittance can represent driving electric current I_DRVWith driving voltage V_DRVBetween ratio, and at least one presumptive area above-mentioned may correspond to danger exotic or benign Exotic.Additionally, according to exotic detect control database, device 100 can according to above-mentioned at least one The reception power of wireless charging receiver and driving electric current I_DRVWith driving voltage V_DRVBetween ratio come certainly Fixed whether wireless charging to be temporarily ceased.

In implementation, exotic detecting is controlled database and aforesaid database can be integrated into same database, But above being used only as is illustrated, not in order to limit scope of the invention.In some examples, this exotic Detecting is controlled database and above-mentioned database can be respectively different databases.

Used additionally, at least one presumptive area above-mentioned can be associated with by exotic detecting policy module 130 One or more adjustable thresholds, but above be used only as citing, not in order to limit scope of the invention. In some examples, it is not necessary that at least one presumptive area above-mentioned is associated with by exotic detecting strategy mould One or more adjustable thresholds that block 130 is used.

According to some embodiments, this group index in step 320 can be associated with wireless charging conveyer 210 Produced under the stable state of the wireless charging operation being carried out.Additionally, device 100 can be in wireless charging transmission Device 210 carries out at least one stable state detecting, to guarantee that this group index can be produced under this stable state.

According to some embodiments, device 100 can be according at least to driving electric current I_DRVWith driving voltage V_DRVProduce Another group index raw, wherein this another group index can include that electric current index is pointed out to drive electric current I_DRV, Yi Jike Separately include that admittance index is pointed out to drive electric current I_DRVWith driving voltage V_DRVBetween ratio.In order to have more preferably Understanding, above-mentioned electric current index be also referred to as Tx electric current, and this admittance index be also referred to as Tx lead Receive.Additionally, device 100 can be carried out outside described wireless charging according to this group index and this another group index Carry out thing detecting.For example, when this another group index points out to detect the exotic of danger, device 100 (especially its interior exotic detecting policy module 130) can stop wireless charging immediately, and can be temporarily Avoid using this group index.Therefore, by utilizing this another group index, device 100 can carry out urgent shape The exotic detecting of state, is wherein at wireless power transmission system 200 (or wireless charging conveyer 210) Under the state of emergency, this group index can temporarily be ignored.

Fig. 4 is the cumulative index involved by method 300 shown in Fig. 3 according to embodiments of the present invention (multi-indexes) framework is controlled.Can be seen that from the curve shown in (a) of Fig. 4, power attenuation rope Drawing (can be considered power attenuation in the present embodiment) can time to time change.Additionally, from (b) institute of Fig. 4 The curve showing can be seen that, electric current relative index (in order to be better understood from, can be considered electricity in the present embodiment Rheology) can time to time change.Additionally, can be seen that this admittance phase from the curve shown in (c) of Fig. 4 Close index (in order to be better understood from, can be in the present embodiment is admittance change) meeting time to time change, Wherein this admittance relative index of the present embodiment is corresponding to driving electric current I_DRVWith driving voltage V_DRVBetween ratio Value.

For example, the time representated by the transverse axis in (a)～(c) of Fig. 4 can in seconds, and In (a)～(c) of Fig. 4, the ratio of the index representated by the longitudinal axis can be made to increase or reduce (for example to utilize Corresponding index produces the related amplifier of in circuit and produces this index in index generation module 120), To prevent this index from cannot use and/or prevent this index to be truncated (truncate).It is more than used only as citing, Not in order to limit scope of the invention.In some examples, in (a) of Fig. 4～(c) representated by transverse axis The unit of time can change.Additionally, in some examples, it is not necessary that in this group index at least one Individual (for example one or more) index carries out proportional zoom (be for example scaling up or reduce).

According to the present embodiment, one or more wireless charging receiver 220 and the numeral of a size of 8 centimetres Multifunctional optical disk (DVD of for example above-mentioned a size of 8cm), optionally can be put at different time points It is placed on wireless charging conveyer 210.At the beginning for not carrying out the state of wireless charging (such as Fig. 4 Marked in (a) " non-loaded "), and wireless charging receiver 220 and DVD is not positioned over wireless charging On electricity transmission device 210；Afterwards, wireless charging receiver 220 longitudinally (portrait orientation) quilt It is positioned on wireless charging conveyer 210, coupling of maximum can be produced between Rx with Tx, and produce The charging current having 800 milliamperes (milliamperes, mA) (is denoted as " 800mA in (a) of Fig. 4 Longitudinally "), cause the curve shown in (a) of Fig. 4 to rise and be switched to higher level.Subsequently, wireless charging Electricity receiver 220 horizontal (landscape orientation) is positioned on wireless charging conveyer 210, Rx Couple can produce with the minimum between Tx, and still have the charging current of 800 milliamperes (Fig. 4's A () is denoted as " 800mA is horizontal "), cause the waveform shown in (a) of Fig. 4 rise once again and promote To higher level.Additionally, this waveform can rise based on another reason, the such as wireless charging of device 100 Strategy.Additionally, wireless charging receiver 220 longitudinally (portrait orientation) is positioned over wireless charging fax Send on device 210, and charging current remain as 800mA (be denoted as in (a) of Fig. 4 " and 800mA indulge To "), cause the waveform shown in (a) of Fig. 4 to return to relatively low level and (be such as similar to shown in 30～60 seconds Between level).Hereafter, this DVD can be adjacent to wireless charging receiver 220 and places so that wireless charging Electricity receiver 220 and this DVD are all seated on wireless charging conveyer 210 (in (a) of Fig. 4 It is denoted as " 800mA is longitudinally " and 8cm DVD ", cause the waveform shown in (a) of Fig. 4 to rise once again simultaneously And rise to another higher level.Finally, DVD is removed, and causes the waveform shown in (a) of Fig. 4 Drop to and be similar to relatively low level (being such as similar to the level between shown in 30～60 seconds)

Although the work(of situation A (referring to the situation wirelessly charged laterally disposed wireless charging receiver) Rate loss and situation B (refer to placed longitudinally wireless charging receiver wireless charging, and neighbouring put The situation of DVD) power attenuation only have small difference and (as shown in (a) of Fig. 4, correspond to situation A Waveform level and the level of waveform corresponding to situation B close to each other on y direction), but Fig. 4 B the waveform shown in () represents curent change, can be used to distinguish situation A and situation B, and (c) of Fig. 4 Waveform represent admittance change, can be used to distinguish situation A and situation B.For example, such as (b) of Fig. 4 Shown in, corresponding to the level on the longitudinal axis for the part waveform (most) in the waveform of situation B and right Should there is obvious difference in level on the longitudinal axis for the part waveform (most) of the waveform of situation A, because of This device 100 (especially its exotic detecting policy module 130) can have according to above-mentioned electric current relative index Effect ground difference situation A and situation B, and do not swung institute by the wave amplitude shown in (b) of Fig. 4 and affected.Illustrate again For, as shown in (c) of Fig. 4, corresponding to the part waveform (most) in the waveform of situation B Level and the level corresponding to the part (most) in the waveform of situation A have significantly on the longitudinal axis Difference, therefore device 100 (especially its exotic detecting policy module 130) can be related to according to above-mentioned admittance Situation A and situation B distinguished effectively in index, and do not swung institute by the wave amplitude shown in (c) of Fig. 4 and affected.

Therefore, based on cumulative index control framework, method 300 and the relative device 100 shown in Fig. 4 Can correctly determine whether there are and detect exotic, and not by because of different receiving positions (Rx position) The couple variations being caused is affected, therefore the mistake that prior art can be avoided to be faced warns or detects mistake Problem.Specifically, in the case that described wireless charging conveyer is resonant wireless charging conveyer, Method 300 can be detected correctly to enter by means of admittance detecting and/or impedance with relative device 100 Row exotic detecting (the wireless charging exotic detecting especially in step 330).

Fig. 5 is the cumulative index involved by method 300 shown in Fig. 3 according to another embodiment of the present invention The schematic diagram of control framework.Waveform in (a) of Fig. 5 can represent that wireless charging receiver count parameter (is Ask simple and clear, be expressed as device quantity or Rx quantity in the present embodiment) can time to time change.Please Noting, wireless charging receiver count parameter represents the wireless charging at least one wireless charging receiver above-mentioned Electricity receiver quantity.Additionally, the waveform shown in (b) of Fig. 5 can represent delivering power (simple and clear for asking, It is expressed as Tx power in the present embodiment) can time to time change.Additionally, shown in (c) of Fig. 5 Waveform can represent that conveyer admittance (simple and clear for asking, to be expressed as Tx admittance in the present embodiment) can at any time Between and change, wherein this admittance relative index of the present embodiment corresponding to drive electric current I_DRVWith driving voltage V_DRV Between ratio.Additionally, the waveform shown in (d) of Fig. 5 can represent transmission electric current (simple and clear for asking, It is expressed as Tx electric current in the present embodiment) can time to time change.

For example, the time represented by the transverse axis in (a) of Fig. 5～(d) can the second as unit, with And the data value represented by the longitudinal axis in (a) of Fig. 5～(d) can make proportional zoom (for example by correspondence Counting circuit in correlation calculation unit, to prepare to be used for producing corresponding index in index generation module 120 Data), to prevent data from cannot use and/or prevent data to be truncated (truncate).It is more than used only as lifting Example, not in order to limit scope of the invention.Transverse axis in some examples, in (a) of Fig. 5～(d) The unit of represented time can change.In some examples, process at least one by proportional zoom (for example partially or in whole) data (being for example used for producing the data of manipulative indexing) of part are dispensable.

According to the present embodiment, one or more of wireless charging receiver 220 wireless charging receiver, another One wireless charging receiver (the such as duplicate of wireless charging receiver 220), DVD as above, with And the incompatible electronic installation in wireless charging conveyer 210 (being denoted as " iPhone " in Figure 5 to illustrate) It optionally is placed on wireless charging conveyer 210 in different time points.(time is 0 at the beginning Second when), not yet carry out wireless charging, and wireless charging receiver the 220th, this another wireless charging receiver, This DVD and this incompatible electronic installation are not all positioned on wireless charging conveyer 210.Then, nothing Line charging receiver 220 is placed on wireless charging conveyer 210, and (in order to be better understood from, this state exists (a) of Fig. 5 indicates " mobile phone ") on, cause in (a)～(d) of Fig. 5 arbitrary (for example A certain) waveform rise and rise to more high levle.Afterwards, wireless charging receiver 220 and this is another One wireless charging receiver (the such as duplicate of wireless charging receiver 220) is all placed in wireless charging fax Send on device 210 (clear for asking, this state is denoted as " two mobile phones " in (a) of Fig. 5), cause Waveform arbitrary (for example a certain) in (a) of Fig. 5～(d) rises once again and is promoted to a more high levle. After this, this another wireless charging receiver is removed, and is only left wireless charging receiver 220 in nothing On line charging conveyer 210 (clear for asking, this state is denoted as " mobile phone " in (a) of Fig. 5), Arbitrary shown waveform in (a)～(d) of Fig. 5 is caused to drop to once again (arrive similar in appearance to 20 seconds compared with low level Level between 30 seconds).Then, wireless charging receiver 220 and above-mentioned incompatible electronic installation all by It is positioned over that on wireless charging conveyer 210, (in order to be better understood from, this state is in (a) of Fig. 5 It is denoted as " a mobile phone+iPhone "), and cause arbitrary shown waveform in (b)～(d) of Fig. 5 to become Change.Afterwards, above-mentioned incompatible electronic installation is removed, and only remaining wireless charging receiver 220 is wireless On charging conveyer 210, (in order to be better understood from, this state is denoted as " one in (a) of Fig. 5 Mobile phone "), and cause arbitrary shown waveform change in (b)～(d) of Fig. 5.Additionally, this DVD can Be placed in proximity, make wireless charging receiver 220 and this DVD be all positioned at wireless charging conveyer 210 it Upper (in order to be better understood from, this state is denoted as " a mobile phone+DVD " in (a) of Fig. 5), And cause arbitrary shown waveform change in (b)～(d) of Fig. 5.Finally, DVD is removed, and Cause arbitrary shown waveform change in (b)～(d) of Fig. 5.

Note that in the present embodiment, dangerous exotic (such as this DVD) may be than benign Exotic (such as above-mentioned incompatible electronic installation) causes more power attenuation.Additionally, above-mentioned danger Exotic (such as this DVD) be likely to result in conveyer admittance (admittance) (or claim Tx admittance) and become Obtain bigger, and the exotic (all incompatible electronic installations as the aforementioned) of this benign is likely to result in conveyer Admittance (or claim Tx admittance) becomes much larger that (the conveyer admittance for example causing than the exotic of above-mentioned danger is more Greatly), wherein device 100 (especially exotic detecting policy module 130) can come according to this conveyer admittance Differentiate wireless charging and be belonging to " mobile phone ", " a mobile phone+iPhone ", and " a mobile phone+DVD " In any situation, without (c) by Fig. 5 waveform swing institute affected.Therefore, the ripple according to Fig. 5 Detecting data shown in shape, when needed, device 100 (especially its exotic detecting policy module 130) Controllable wireless charging conveyer 210 optionally stops wireless charging.Will not heated exotic (all Above-mentioned incompatible electronic installation as in this example) in the case of be placed in proximity, if power attenuation exists Within preset range and this conveyer admittance (or Tx admittance) falls into the presumptive area corresponding to predefined Interval scope in, the specific presumptive area of one of at least one presumptive area such as above-mentioned, wireless charging Electricity receiver 220 still can wirelessly be charged.

Therefore, based on the cumulative index control framework shown in Fig. 5, method 300 and device 100 can be correct Determine whether to detect exotic, and can correctly determine that the exotic that detects is dangerous external Thing or the exotic of benign, therefore the mistake that prior art can be avoided to be faced warns or wrong the asking of detecting Topic.Specifically, in the case that described wireless charging conveyer is resonant wireless charging conveyer, this Invention method and relevant apparatus can be detected by admittance and/or impedance detecting suitably carry out exotic detecting (the wireless charging exotic detecting especially shown in step 330), and when needed, nothing can be temporarily ceased Line charging procedure, therefore can prevent dangerous exotic from causing in wireless charging program and catch fire, and can prevent non- Dangerous exotic interrupts described wireless charging program.Consequently, it is possible to described wireless charging fax can be guaranteed simultaneously Send the usefulness of device and the personal safety of the user of described wireless charging conveyer.

Fig. 6 is showing of the exotic detection area involved by method 300 of Fig. 3 according to embodiments of the present invention Being intended to, wherein the exotic detection area shown in Fig. 6 can be considered the example of aforesaid specific presumptive area.Lift For example, the coordinate plane (Rx_ power, Tx_ admittance) mentioned in some embodiments of Fig. 3 and Fig. 4 Can refer to the coordinate plane (Rx power, Tx admittance) shown in Fig. 6.Additionally, shown in the transverse axis of Fig. 6 Rx power can represent the reception power of at least one wireless charging receiver above-mentioned, and shown in the longitudinal axis of Fig. 6 Tx admittance can represent above-mentioned conveyer admittance, that is drive electric current I_DRVWith driving voltage V_DRVBetween Ratio.

In implementation, the upper specific waveforms of coordinate plane (Rx_ power, Tx_ admittance), it is such as denoted as that " Rx exists The waveform of the Tx estimation admittance under normal mode ", can prepare according to some experiments, in advance using as generation The reference of this exotic detection area, is wherein denoted as " Rx Tx estimation admittance in the normal mode " and i.e. represents The conveyer admittance of the reception power of the wireless charging receiver 220 estimated under corresponding normal mode.

Note that above-mentioned exotic detects pointed exotic detection area of controlling database is preparation in advance Alright, and this exotic detection area can be used for pointing out that exotic is dangerous exotic or benign Exotic.When according to from least one wireless charging receiver above-mentioned (such as wireless charging receiver 220) Above-mentioned at least one receive power report, just determine reception work(of at least one wireless charging receiver above-mentioned During rate (i.e. Rx power), device 100 can be controlled database based on the detecting of above-mentioned prior ready exotic, Calculate the border of this exotic detection area and the crosspoint of a particular line, to determine two adjustable thresholds Value TH1 and TH2, wherein this particular line corresponds to online mode (online manner) firm The reception power having determined.Above-mentioned determine adjustable threshold TH1 and TH2 with online mode after (as TH1 < in the case of TH2), device 100 (especially its interior exotic detecting policy module 130) can Whether the up-to-date detecting value according to Tx admittance falls into the interval of [TH1, TH2], determines that exotic is dangerous Exotic or the exotic of benign.For example, when the up-to-date detecting value detecting Tx admittance has When entering [TH1, TH2] interval, device 100 (especially its interior exotic detecting policy module 130) can Judge the exotic that this exotic is benign；Otherwise, device 100 (especially its interior exotic detecting plan Slightly module 130) this exotic then can be determined for dangerous exotic.Consequently, it is possible to device 100 is (especially Its interior exotic detecting policy module 130) whether can be dangerous according to this exotic exotic determine be No wireless charging to be temporarily ceased.For example, when detecting the exotic that this exotic is danger, dress Put 100 (especially its interior exotic detecting policy modules 130) to control wireless charging conveyer 210 temporary When ground stop wireless charging.Again for example, when detecting the exotic that this exotic is benign, device 100 (especially its interior exotic detecting policy modules 130) can control the above-mentioned warning user interface mentioned, To point out the exotic as benign for this exotic.

According to some embodiments, device 100 can use the many groups of variable type (variant being relevant to threshold value respectively Type) table (especially many group look-up tables, all look-up tables as the aforementioned).For example, above-mentioned table can divide Power attenuation that Dui Yingyu be not different, Tx electric current, Tx admittance, Tx type and Rx type etc..

Fig. 7 is the exotic detecting policy control involved by method 300 of Fig. 3 according to embodiments of the present invention The schematic diagram of framework.As it is shown in fig. 7, index produces circuit 122-1 can include that amplifier (indicates in the figure 7 For " G "), in order to produce above-mentioned power attenuation index (being denoted as " power attenuation " in the figure 7), wherein can answer With a gain to this power attenuation index to process by proportional zoom (for example scale up or reduce) This power attenuation indexes, (to be marked in the figure 7 by exotic detecting policy module 130 when this power attenuation index It is shown as " FOD strategy ") institute's used time, reach more preferably dynamic range.Additionally, index produces circuit 122-3 Amplifier (being denoted as " G " in the figure 7) can be included, (mark in the figure 7 to produce above-mentioned admittance relative index It is shown as " admittance change "), especially corresponding to driving electric current I_DRVWith driving voltage V_DRVBetween ratio Above-mentioned admittance relative index, wherein another gain can be applied to this admittance relative index, with passing ratio scaling The mode of (for example scale up or reduce) is to process this admittance relative index, to be related to rope in this admittance Draw and reach more preferably dynamic range when being utilized by exotic detecting policy module 130.Additionally, index produces electricity Road 122-2 can include amplifier (being denoted as " G " in the figure 7), in order to produce above-mentioned electric current relative index ( Fig. 7 is denoted as " curent change), wherein another gain can be applied to this electric current relative index, to pass through The mode of proportional zoom (for example scale up or reduce) is to process this electric current relative index, with at this electricity Stream relative index reaches preferable dynamic range when being utilized by exotic detecting policy module 130.

As it is shown in fig. 7, above-mentioned this group exotic detecting policy control parameter can include that above-mentioned wireless charging connects Receive device count parameter (being illustrated by device quantity or Rx quantity in the present embodiment), and can separately include State at least one type of device parameter, such as point out the conveyer type parameter of above-mentioned conveyer type (at this Embodiment is illustrated by Tx type), and point out that above-mentioned receiver types (uses Rx class in the present embodiment Type is illustrated) receiver types parameter.For example, above-mentioned conveyer type can be the multiple of conveyer Particular types in variety classes (class), and above-mentioned receiver types can be multiple different receivers Particular types, wherein a part of species in the variety classes of above-mentioned receiver may correspond to different reception resistances Anti-(i.e. Rx impedance).Again for example, above-mentioned conveyer type can be the multiple different classes of of conveyer (category) particular category in, and above-mentioned receiver types can be multiple classifications specific of receiver Classification, wherein above-mentioned receiver multiple different classes of in a part of classification may correspond to different reception resistances Anti-(i.e. Rx impedance).Additionally, this group exotic aforesaid detecting policy control parameter can separately include receiver Power (is the Rx power of the present embodiment).Additionally, exotic detecting policy module 130 above-mentioned at least One (for example one or more) exotic detecting strategy mays include: according to above-mentioned this group exotic detecting Policy control parameter, utilizes the many groups look-up table corresponding to this group index, selects online to be suitable to this group index Look-up table.Consequently, it is possible to exotic detecting policy module 130 can be external according to this group threshold value and this group Predetermined relationship between thing detecting policy control parameter, determines this group exotic above-mentioned detecting policy control ginseng This group threshold value of number, and this group index and this group threshold value can be compared and compare to produce this group respectively As a result, and above-mentioned wireless charging control signal can be produced separately (shown in Fig. 1 according to this group comparative result Exotic detecting policy module 130 output), to control whether wireless charging to be temporarily ceased.Below only With for example, not in order to limit scope of the invention.

Note that exotic detecting policy module 130 can include predetermined logical combination, and can be according to this Group comparative result utilizes this predetermined logical combinations to carry out logical operation (such as one or more OR (or) operation And/or one or more AND (with) operation), to produce the defeated of the exotic detecting policy module 130 shown in Fig. 1 Going out, wherein this predetermined logical combinations can include at least one (for example one or more) OR logical operations unit And/or at least one (for example one or more) AND logical operations unit, all OR as shown in Figure 7 patrol Collect operating unit and AND logical operations unit.For example, this predetermined logical combinations can be by hardware circuit Implement, and this predetermined logical combinations can include the predetermined combinations of multiple logic circuit.Specifically, Fig. 7 Shown OR logical operations unit and AND logical operations unit can use OR gate and respectively AND logic gate carrys out implementation.It is more than used only as citing, not in order to limit scope of the invention.Citing again comes Say, this predetermined logical combinations can by be above set forth on this process circuit run this group program code in one The program code dividing is implemented.

The look-up table pointing out this group threshold value selected by means of this predetermined logical combinations and online mode, external Thing detecting policy module 130 can correctly carry out the wireless charging exotic detecting described in step 330, and Can suitably produce the output of the exotic detecting policy module 130 shown in Fig. 1, control wireless charging fax (such as control wireless charging conveyer 210 stops wireless charging or continues wireless to send device 210 correctly action Charging).For example, in the case of detecting exotic (especially dangerous exotic), external Thing detecting policy module 130 can control wireless charging conveyer 210 and stops wireless charging and (indicate in the figure 7 For " Tx stops charging ").It is more than used only as citing, not in order to limit scope of the invention.Outside note that Carry out thing detecting policy module 130 and can include another predetermined logical combinations, and can be according at least to a part of (example As partially or in whole) this group comparative result utilizes this another predetermined logical combinations to carry out logical operation (example Such as one or more OR operation and/or one or more AND operation), to produce exotic detecting strategy mould Another output of block 130, wherein this another output of exotic detecting policy module 130 can be used to control police Show user interface, all warning LED described above.Therefore, by utilizing the above-mentioned finger chosen with online mode Go out the look-up table of this group threshold value, and this predetermined logical combinations and this another predetermined logical combinations are (in the figure 7 It is denoted as " multiple threshold value tables+detecting logic "), exotic detecting policy module 130 can correctly walk The exotic detecting shown in Fig. 1 is detected and can suitably be produced to wireless charging exotic described in rapid 330 The output of policy module 130 and another output of exotic detecting policy module 130, control wireless charging (such as control wireless charging conveyer 210 stops wireless charging or continues in conveyer 210 correctly action Wireless charging, and optionally control this warning user interface).

For example, in the case of detecting adventurous exotic, exotic detects policy module 130 Controllable wireless charging conveyer 210 stop wireless charging and (in order to be better understood from, be denoted as " Tx at Fig. 7 Stop charging ").Again for example, in the case of detecting safe exotic (that is outside benign Carry out thing), exotic detecting policy module 130 can control wireless charging conveyer 210 and keeps the wireless charging (to be It is better understood from, be denoted as " Tx keeps charging " in the figure 7), and can control this warning user separately Interface (such as this warning LED) points out the exotic that this exotic is benign.Again for example, exist Detecting in the case of do not have exotic, exotic detecting policy module 130 can control wireless charging conveyer 210 continuation wireless chargings (in order to be better understood from, be denoted as " Tx continues charging " in the figure 7).For asking Succinctly, in the present embodiment, the details of some similar features will not repeat.

Fig. 8 is that the wireless charging involved by method 300 shown in Fig. 3 according to embodiments of the present invention restores stream Journey.According to the present embodiment, device 100 can by the initial Tx electric current in internal memory stored within (especially The current value Ta of this initial Tx electric current) compare (especially this current Tx with current Tx electric current The current value T of electric current) determine whether an exotic is removed.

As shown in Figure 8, when triggering (or declaring) FOD state, (such as instruction detects exotic State), device 100 can control wireless charging conveyer 210 and stops wireless charging, especially by by nothing Line charging conveyer 210 is maintained at different flash patterns (strobe mode) to be got off to stop charging.Now, device 100 can control wireless charging conveyer 210 exports a series of stroboscopic electric current, such as has current value Ta's Initial Tx electric current and the current flow with current value T.Specifically, when this exotic detects state quilt When triggering (or declaring), device 100 can be stored in the current value Ta of initial Tx electric current in internal memory.One The current value of the stroboscopic electric current of consecutive can successively decrease in time.When detect the current value Ta of initial Tx electric current with Difference between the current value (the current value T of such as current Tx electric current) of one of this series of stroboscopic electric current During more than predetermined value Tb (such as Ta-T > Tb), then it represents that this exotic is removed, and device 100 can Control wireless charging conveyer 210 restarts to charge (for example carrying out normal wireless charging).

Fig. 9 is the stochastic model device control involved by method 300 shown in Fig. 3 according to embodiments of the present invention The schematic diagram of framework processed.According to the present embodiment, device 100 can determine the quantity of stochastic model device, that is The device quantity of wireless charging receiver in stochastic model for the operation, all described above transmittable above-mentioned at least One random phase postpones the specific wireless charging receiver of package.In stochastic model, described wireless charging In receiver any one wireless charging receiver can transmit random phase postpone package (such as above-mentioned at least one Random phase postpones package), and (in-band) communication in frequency band can be carried out.

For example, above-mentioned packet information can add up in above-mentioned predetermined period such as predetermined period T, Wherein predetermined period T can be more than or equal to the time of the slot time (slot time) in the stochastic model of twice Length.It is to say, predetermined period T can more than or equal to twice by arbitrary above-mentioned wireless charging receiver The time span of the periodic time slot being used.Specifically, the package in wireless charging conveyer 210 Detecting module (being denoted as " package detecting " in fig .9) can transmit value (such as in order to have pointed out to detect at random The logical value of phase delay package) to the upper semipath in the framework of Fig. 9, to allow this value can be faced by some Boundary's protected location (boundary protection unit) is handled, and be for example initialised (initialization) Control and dump (dump) unit (being denoted as " INT/DUMP " in fig .9), or comparing unit (example Threshold value detecting function as on the upper semipath of the framework at Fig. 9) handled by.Additionally, by those critical guarantors The result protecting unit generation can be transferred into amplifier (the upper semipath at Fig. 9 framework is denoted as " G "), Deal with, the place that wherein this amplifier is exported with passing ratio scaling (as scaled up or reducing) Reason result can be by IIR (Infinite Impulse Response, IIR) low pass filter (at Fig. 9 The upper semipath of framework is denoted as " IIR ") filtered, and filtered result can be again by retardation (hysteresis) unit and surging eliminate (deglitch) unit (upper semipath at Fig. 9 framework respectively It is denoted as " HYS " and " DEG ") handled, to determine expected device quantity, all device numbers as the aforementioned Amount.Note that the lower semipath at Fig. 9 framework can include that some are similar to the upper semipath institute at Fig. 9 framework The assembly showing, such as another comparing unit, another amplifier, and another IIR low pass filter, wherein The power detecting module (being denoted as " power detecting " in fig .9) of wireless charging conveyer 210 can be from above-mentioned Packet information obtains power information, and (at least one random phase for example above-mentioned postpones the power letter that package is loaded with The random phase of breath, especially those wireless charging receivers postpones the power information that package is loaded with), to permit Being permitted this power information can be by this another comparing unit, this another amplifier and this another IIR low pass filter institute Process, to produce the average power content of all these wireless charging receiver.By the lower right corner institute of Fig. 9 The multiplier showing carries out multiplication operation, for example, device quantity is multiplied by average power content, and the framework of Fig. 9 can mat This determines single unit system power (being denoted as " rating of set " in fig .9), that is those wireless charging receivers Entirety receive power, wherein the reception power of this entirety can be considered at least one wireless charging above-mentioned receive The example of the reception power of device, and the example of the Rx power shown in Fig. 7 can be considered.

Figure 10 is the stable state control framework involved by method 300 shown in Fig. 3 according to embodiments of the present invention. In order to make wireless charging conveyer 210 have more preferable usefulness, device 100 can carry out stable state detecting and judge nothing Whether line charging conveyer 210 transmits stable state at power.Specifically, with regard to above-mentioned wireless charging exotic Some of detecting judge that operation needs to carry out under power transmission stable state.

As shown in Figure 10, wireless charging conveyer 210 and/or at least one wireless charging receiver above-mentioned are many Commutating voltage (rectified voltage) Vrect of individual parameter, such as wireless charging receiver 220, transmission are driven Dynamic voltage (such as driving voltage V_DRV), and transmit electric current (be respectively designated as in Fig. 10 " Rx Vrect ", " TxVin " and " Tx electric current "), can be monitored by the framework shown in Figure 10.For example, shown in Figure 10 Framework may be disposed among wireless charging conveyer 210, especially may be disposed among device 100.This Outward, each device (lower pass filter, LPF) that is low pass filtering of those parameters is filtered, to make to disappear Except surging (glitch) is used, and device (high pass filter, HPF) can be high-pass filtered filtered, Reducing or to eliminate skew (offset), and can be separately by handled by comparing unit (in the framework of such as Figure 10 Three paths in threshold value detecting function on corresponding path).For example, wireless charging receiver 220 Commutating voltage Vrect can be low pass filtering device LPF1 and high-pass filter HPF1 and filtered, transmission is driven Dynamic voltage (Tx Vin) can be low pass filtering device LPF2 and high-pass filter HPF2 institute wave filter, and Transmission (Tx) electric current can be low pass filtering device LPF3 and high-pass filter HPF3 and be filtered.Additionally, institute Some filter result can be transferred into AND logical operations unit (such as AND logic gate, or by operating in Program code on above-mentioned process circuit carrys out the AND logical operations unit of implementation), and this AND logic behaviour Make unit and AND logical operation can be carried out to these filter result, index (at Figure 10 to produce power stability In be denoted as " power stability "), with point out wireless charging conveyer 210 whether be in power transmission stable state.Lift For example, by by the stable state control framework applications shown in Figure 10 to device 100, when high-pass filter HPF1, The fluctuation of the output of HPF2 and HPF3 is all at preset range (all preset range Δ Y1 as shown in Figure 10) Or the scheduled period (all scheduled period Δ T as shown in Figure 10) interior when, all of filter result is all in very State (TRUE state, such as high levle), and therefore this AND logical operations unit also can export " TRUE " State (such as high levle) so that power stability index point out out that wireless charging conveyer 210 is in this work( Rate transmits stable state.

Figure 11 is the emergency protection control involved by method 300 shown in Fig. 3 according to embodiments of the present invention Framework processed.According to the present embodiment, device 100 can carry out urgent exotic according to this another group index above-mentioned to be detectd Survey, and be not only restricted to regard to this above-mentioned group index exotic detect in any judge or be limited on State stable state detecting.As shown in figure 11, in Tx electric current and Tx admittance, any one can be more single by using Unit's (threshold value detecting function on either path in two paths up and down shown in Figure 11) monitors.Citing comes Say, when Tx electric current and/or Tx admittance are in the state (such as high levle) of " TRUE (very) ", and OR The state (such as this high levle) of " TRUE " is somebody's turn to do in logical operations unit output so that the framework shown in Figure 11 State of emergency exotic detecting index in output would indicate that wireless charging conveyer 210 is in a state of emergency. Consequently, it is possible to wireless charging conveyer 210 can reach the first predetermined value or Tx admittance reaches at Tx electric current Stopping wireless charging during two predetermined values, wherein this first predetermined value and this second predetermined value may correspond to Fig. 7 Rx power shown in shown Rx quantity (that is aforesaid device quantity) and Fig. 7.

Figure 12 be the poll involved by method 300 (polling) shown in Fig. 3 according to embodiments of the present invention and Simple response control program schematic diagram.This poll and simple response control program can be applicable to conveyer Tx (example Such as wireless charging conveyer 210) such as power delivery unit (Power Transmitting unit, PTU), and can It is applied to receiver Rx (for example, wireless charging receiver 220) such as power receiving unit (Power Receiving Unit,PRU).In order to make it easy to understand, power delivery unit power can receive as the example of conveyer Tx Unit can be as the example of receiver Rx.But this is only example explanation, and the restriction of non-invention.In part In example, at least one of conveyer Tx and receiver Rx or both all can have different realization sides Formula.

For example, the power delivery unit 710 (such as wireless charging conveyer 210) shown in the Zuo Bantu of Figure 12 The wireless charging power of the power receiving unit 720 shown in the figure of the right side half being sent to Figure 12, and power can be limited Receiving unit 720 needs to coordinate with power delivery unit 710 to guarantee the overall efficiency of wireless charging.Citing For, power receiving unit 720 can perform power poll, especially, citing to power receiving unit 710 For, a transmittable package to power delivery unit 710 is to require to improve power (increasing wireless charging power) Or reduce power (reducing wireless charging power).Additionally, power delivery unit 710 can not transmit any package In the case of carry out the power poll of responding power receiving unit 720 with simple response, single to notify that power receives Whether unit 720 agrees to or refuses this power poll.But this is only an example explanation, and a limit of non-invention System.According to some embodiments, the package being sent to power delivery unit 710 from power receiving unit 720 can The information of carrying (or carrying secretly) above-mentioned power poll.

It according to some embodiments, is sent to the package of power delivery unit 710 from power receiving unit 720 Header field (header field) (or carrying secretly) header information can be loaded with.For example, but not limit, should (for example, header information can comprise to indicate the default header content " OVP " of excessive voltage condition OVP In wireless charging acceptor circuit rectifier output on commutating voltage Vrect more than or equal to corresponding to The default overvoltage threshold values of the maximum permissible voltage level of commutating voltage Vrect, wherein commutating voltage Vrect can DC voltage level Vrect for relative to earth terminal), in order to indicated horsepower decline condition PWR-Dn (for example, Power receiving unit require reduce power) default header content " Dn ", in order to indicated horsepower rise condition The default header content " UP " of PWR-Up (for example, power receiving unit require increase power) and in order to refer to Show that (for example, power receiving unit report commutating voltage Vrect is positioned at mesh to power ideal conditions PWR-OK In the range of mark, such as the ideal voltage zone of commutating voltage Vrect) default header content " OK ".

Figure 13 performs exemplified with the simple response by means of wireless charging device according to another embodiment of the present invention The flow chart of wireless charging control method 900 of electronic installation.Method 900 shown in Figure 13 can be applicable to Such as the wireless charging device of wireless charging conveyer 210, especially, can be applicable to the control of wireless charging device Circuit processed (such as the control circuit of wireless charging conveyer 210), and it is similarly applied to embodiment illustrated in fig. 2 Wireless power transmission system 200, but this is only example explanation, and the restriction of non-invention.Implement at some In example, the method shown in Figure 13 can be applicable to the power delivery unit 710 shown in Figure 12, especially, can answer For the control circuit of power delivery unit 710, the method is described as follows.

In step 910, (for example, control circuit can comprise Fig. 1 institute to the control circuit of wireless charging device At least a portion (such as a part or overall) of the framework showing) can be by power output winding 218 from electronic installation Receiving multiple package, each package in plurality of package may be used to carry the wireless of (or carrying secretly) electronic installation The information of charging report, and unacknowledged (unacknowledged) header information can be comprised.For example, But not limiting, at least one random phase that the multiple packages in step 910 can comprise in above-described embodiment is prolonged Slow package.For example, but not limiting, this unacknowledged header information can comprise to seal in above-described embodiment Default header content " DN " in package in default header content " OVP " in bag, above-described embodiment, on Default header in package in the default header content " UP " stated in embodiment in package and above-described embodiment Content " OK ".

In step 920, the control circuit of wireless charging device can control wireless charging device and (for example, leads to Cross and utilize the conveyer Tx being positioned at wireless charging device, such as above-mentioned wireless charging conveyer, especially, By utilizing the power amplifier of control circuit being coupled in wireless charging device, wherein this control circuit with And this power amplifier is respectively positioned in this wireless charging device) to produce corresponding at least in multiple packages At least one simple response (such as one or more simple responses) of package (such as one or more packages), confirms (acknowledge) this at least one package in the plurality of package.For example, the control of wireless charging device Circuit processed can control wireless charging device and produces at least simple of corresponding at least one package to multiple packages Response confirms at least one package in multiple package, and from wireless charging device not by any package transmission Information is to electronic installation.Especially, wireless charging device is not required to transmit any package to electronic installation in order to really Recognize this at least one package.Therefore, the method and apparatus (such as method 900 and device 100) that disclosed herein can By simple one-way communication control program rather than the power control of two-way messenger's wireless power transmission system 200 Circulation continuous processed operate, wherein when wireless charging device such as transfer plate 210 do not transmit any modulated signal (as Wireless charging) when can reduce power consumption.Compared with prior art, method proposed by the invention and related dress Put and can ensure that overall efficiency, and the problem in prior art can be avoided (as manufacturing cost increases and in frequency band Channel not enough).

According to some embodiment, at least one package in the multiple packages described in step 910 can comprise above-mentioned At least one random phase mentioned in embodiment postpones package, and at least a part of which one random phase postpones in package Each random phase postpone package and relative to time slot, there is random phase and postpone, and this at least one random phase Postpone package in order to transmit the information of at least one wireless charging report of electronic installation.

According to some embodiments, above-mentioned at least one simple response can comprise at least one pulse in time domain or frequency domain (such as one or more pulses).For example, electronic installation can detect at least one simple response by this at least The confirmation of this at least one package in the plurality of package that one simple response is considered as in step 910, without Again decoding is performed to this at least one simple response.

According to some embodiments, electronic installation can detect this at least one simple response, for example, this electronics Device can detect this at least one simple response and be considered as this at least one simple response in step 910 this is many The confirmation of this at least one package in individual package, without performing decoding to this at least one simple response again.

Figure 14 is exemplified with the simple response control program of method 900 shown in Figure 13 according to embodiments of the present invention Schematic diagram.Curve shown in Figure 14 first half can represent the transmitter power amplifiers of wireless charging device The electric current (it can be described as this transmitter power amplifiers electric current) of (transmitter power amplifier, Tx PA), The output electric current of such as this Tx PA, and the curve shown in Figure 14 lower half can represent wireless charging receiver 220 Commutating voltage Vrect, wherein commutating voltage Vrect can be considered the certain power in multiple power receiving unit The commutating voltage Vrect of receiving unit, for example, this certain power receiving unit can be single for being transmitted by power One of unit's multiple power receiving units carrying out wireless charging person.It is noted that Tx PA can be as wireless The example of the power amplifier of charging device.Additionally, Tx PA electric current can be as the example of conveyer electric current.

As shown in figure 14, the waveform of Tx PA electric current had before pulse 1020 some vibrations 1010, and Corresponding to conveyer decoding, (for example, transfer plate 210 can be from certain power receiving unit in these vibrations 1010 Decode some wireless chargings and report and produce accordingly these vibrations), when conveyer decoding completes, wireless charging The control circuit of device can produce Sing plus, the pulse 1020 in the such as waveform of this Tx PA electric current, and This Sing plus is considered as the simple response of at least described in step 920, at least one simply should in response to this Answering (all such Sing plus (pulse 1020)), the commutating voltage Vrect of this certain power receiving unit can evidence This change.Therefore, the waveform of the commutating voltage Vrect of certain power receiving unit has corresponding pulse 1022.So, the control circuit of wireless charging device can control wireless charging device generation corresponding to multiple envelopes The simple response of at least of at least one package in bag, to confirm to comprise the plurality of of package described in step 910 This at least one package in package, and not from this wireless charging device by any package to electronic installation transmission Information.According to this embodiment, owing to electronic installation (especially, certain power receiving unit) is not required to upper State at least one simple response and enter row decoding, therefore this at least one simple response is relatively easy really, wherein wireless Charging device does not transmit any package and omits to save length at this to electronic installation, remaining details of the present embodiment.

Figure 15 exemplified with method 900 shown in Figure 13 according to embodiments of the present invention simple response (for example, Sing plus as above) schematic diagram.In order to make it easy to understand, the simple response control program shown in Figure 14 Still can be applicable to the power delivery unit in above-described embodiment, and the control circuit of wireless charging device can root Control the Tx PA electric current of this power delivery unit according to waveform shown in Figure 15 to produce Sing plus.

As shown in figure 15, originally Tx PA electric current can maintain conveyer primary current Itx_original.Work as biography (for example, the power delivery unit PTU decoding OK marked in Figure 15), wireless charging when sending device decoding to complete The control circuit of electric installation can control Tx PA electric current makes it rest on conveyer nominal current Itx_nominal mono- The section time, then controlling Tx PA electric current is that the 90% of conveyer maximum current Itx_max reaches preset time period, To form the rising edge of Sing plus, wherein preset time period can for fixing in the range of 2ms to 5ms when Between section.Then, the control circuit of wireless charging device can control Tx PA electric current is the original electricity of conveyer again Stream Itx_original is to form the drop edge of this Sing plus.Therefore, this Sing plus can be filled by electronics Put (especially, certain power receiving unit) simply correctly to detect.For purpose of brevity, remaining is thin for the present embodiment Joint omits at this.

Figure 16 according to another embodiment of the present invention exemplified with method 900 shown in Figure 13 simple response (for example, The train of pulse of such as a series of pulses) schematic diagram.In order to make it easy to understand, except Sing plus is by train of pulse institute Outside replacement, the simple response control program shown in Figure 14 still can be applicable to institute in such as embodiment illustrated in fig. 11 The power delivery unit stated, and the waveform according to Figure 16, the control circuit of wireless charging device can control The TX PA electric current of this power delivery unit is to produce a series of pulse.

As shown in figure 16, originally TX PA electric current can maintain conveyer primary current Itx_original, works as biography When sending device decoding to complete (the power delivery unit decoding OK marked in such as Figure 15), wireless charging device Control circuit can control TX PA electric current makes it rest on conveyer nominal current Itx_nominal a period of time, Then controlling TX PA electric current is that the 90% of conveyer maximum current Itx_max reaches preset time period, to be formed The rising edge of the first pulse in this series of pulse, wherein preset time period can be 2ms to 5ms scope Interior set time section.Then, the control circuit of wireless charging device can control TX PA electric current again for passing Send device nominal current Itx_original to form the drop edge of the first pulse in a series of pulse.A series of The residual impulse of pulse can produce in the same way, simply the control circuit control TX PA of wireless charging device Electric current is that conveyer primary current Itx_original is to form the trailing edge of last pulse of a series of pulse Edge.Therefore, a series of pulses simply correctly can be detected by electronic installation (especially, power receiving unit) Arrive.For purpose of brevity, remaining details of the present embodiment is omitted at this.

Figure 17 according to another embodiment of the present invention exemplified with the simple response of method 900 shown in Figure 13 (such as frequency domain In Sing plus) schematic diagram.For example, the control circuit of wireless charging device may utilize frequency shift keying (Frequency Shift Keying, FSK) simple answer method is controlling the Sing plus in frequency domain, but this is only Example illustrates, and the restriction of non-invention.According to some embodiments, the control circuit of wireless charging device can Utilize other methods to control the Sing plus in frequency domain.

According to this embodiment, the control circuit of wireless charging device can control TX PA electric current and initially carries default Frequency 6.78MHz, then changes into another predeterminated frequency 6.79MHz in frequency domain, single to be formed in frequency domain The rising edge of one pulse.Then, the control circuit of wireless charging device can control TX PA electric current in frequency domain It is inside changed again to predeterminated frequency 6.78MHz to form the drop edge of Sing plus in frequency domain.Therefore, should Sing plus simply correctly can be detected by electronic installation (especially, power receiving unit).For purpose of brevity, Remaining details of the present embodiment is omitted at this.

According to some embodiments, this pulse in frequency domain can be substituted by the series of pulses in frequency domain, citing For, the control circuit of wireless charging device can control TX PA electric current and initially carries predeterminated frequency 6.78MHz, Then in frequency domain, another predeterminated frequency 6.79MHz is changed into, with in a series of pulses in forming frequency domain first The rising edge of pulse.Then, the control circuit of wireless charging device can control TX PA electric current in frequency domain It is changed again to predeterminated frequency 6.78MHz to form the drop edge of the first pulse in a series of pulse.One is The residual impulse of row pulse can produce in the same way.A series of pulses in frequency domain can be by electronic installation (especially, power receiving unit) simply correctly detects.For purpose of brevity, remaining details of the present embodiment is at this Omit.

According to some embodiments, the power receiving unit in multiple power receiving units, as target power receives Unit, transmittable random delay package, this random delay package comprises unacknowledged header information.Work as decoding When completing, the power delivery unit in embodiment illustrated in fig. 15 can respond as follows: the transmission of 2 milliseconds Device nominal current Itx_nominal and there is certain pulses height (such as conveyer maximum current Itx_max 90%) and there is the rising pulses of certain pulses width (such as 2 milliseconds to 5 milliseconds).Additionally, power receiving unit That can detect commutating voltage Vrect rises or falls behavior and correlation timing, to determine that power delivery unit is No this unacknowledged header information of permission (the default header content of package as described in step 712 " OVP ", step The default header content of package described in the default header content of package described in 722 " DN ", step 732 " UP " or The default header content of package described in step 740 " OK ").If power receiving unit cannot detect commutating voltage The unexpected change of Vrect, then power receiving unit can constantly repeatedly transmit and have in identical header information unconfirmed The random delay package holding, to guarantee that power delivery unit can be to this information decoding (more specifically, can Notice this unacknowledged information of power delivery unit).But this is only example explanation, and the restriction of non-invention. According to some embodiments, other can be applied not have complicated coding/decoding requirement to avoid some of error detection Simple answer method.For example, may utilize above-mentioned train of pulse simple as at least in step 920 Response.And in some examples, the control circuit of power delivery unit may utilize the FSK shown in Fig. 7 embodiment Simple answer method performs to start to change from original frequency 6.78MHz or becomes original frequency 6.78MHz's Frequency modulation(PFM).Additionally, the associated modulation result of frequency can fall in scheduled frequency range, wherein preset frequency Scope can be more than or equal to lower frequency limit (6.78MHz-10KHz), and may be less than or equal to upper limiting frequency (6.78MHz+10KHz)。

According to some embodiments, after once power delivery unit confirms, power receiving unit can be fixed package and be prolonged The slow time simultaneously transmits the follow-up envelope with confirmed header information (acknowledged header information) Bag.Additionally, after all packages all complete with the decoding of confirmed header information, power delivery unit can subtract The size of few detection window is extremely equal with the slot time of power receiving unit.Additionally, power receiving unit can By the resonant frequency synchronization of packet delay time and power delivery unit, reduce power delivery unit and power Time drift between receiving unit.If in addition, support time synchronized, then power receiving unit can be when long Between (time cycle of such as one minute to ten minutes or another time span) transmit a unacknowledged package afterwards, with Avoid possible error detection or time drift.Remaining details is omitted at this to save length.

Figure 18 according to another embodiment of the present invention exemplified with the signal of the simple response of method 900 shown in Figure 13 Figure.Compared with the simple response shown in Figure 15, the pulse in this simple response in this embodiment can be modified. In order to make it easy to understand, the pulse in the simple response shown in Figure 15 can be considered direct impulse (for example towards forward Draw high pulse), and the pulse in the simple response shown in Figure 18 can be considered negative-going pulse (for example towards negative sense Drag down pulse), in this embodiment, negative-going pulse is replaced direct impulse.Therefore, direct impulse and negative sense Pulse each can represent different meaning.For example, direct impulse may indicate that the power described in Figure 12 embodiment Poll (the power poll of the package in multiple packages as described in correspondence to step 910) is allowed to, and negative sense Pulse can represent the power poll described in Figure 12 embodiment (in the multiple packages as described in correspondence to step 910 This power poll of another package) it is rejected, remaining details is omitted at this to save length.

In embodiment illustrated in fig. 18, negative-going pulse may correspond at preset time period (such as 2ms to 5ms In the range of set time section) interior conveyer minimum current Itx_Min 90%.But this is only example explanation, And the restriction of non-invention.In certain embodiments, the voltage level of negative-going pulse is variable, remaining phase Omit to save length at this like details.

According to some embodiments, it is desirable to the power receiving unit of output (output-requesting), such as power Receiving unit 720, transmittable have rectifier power parameter P_rec (for example, corresponding to lower-wattage classification Lower-wattage value) package to power delivery unit 710, wherein rectifier power parameter P_rec may indicate that Power receiving unit 720 wishes that its rectifier can have the power equal with rectifier power parameter P_rec.Lift For example, power receiving unit 720 needs power 10 watts (W), but originally power receiving unit 720 requires Small-power value such as 1 watt.When power delivery unit 710 has permitted the requirement corresponding to small-power value such as 1 watt When, power receiving unit 720 may require that another higher performance number, such as 2 watts.And work as power transmission When unit 710 permits the requirement corresponding to the second performance number such as 2 watts, power receiving unit 720 can require again Higher another performance number again, such as 3 watts.Therefore, power receiving unit 720 can requirement power progressively, Rather than i.e. require high-power value at the beginning, such as 10 watts.For example, when the requirement of power receiving unit 720 When being allowed, power receiving unit 720 can obtain required power from power delivery unit 710, then (as After ten seconds), power receiving unit 720 can send next corresponding to next feasible power class and require, and work( Rate delivery unit 710 responds this, and next requires.Therefore, can avoid problem such as system crash in prior art (by In the system crash that the charging ability deficiency of conventional wireless charging device is caused).But this is only example explanation, And the restriction of non-invention.According to some embodiments, power receiving unit 720 can limit its rectifier The output electric current of rectifier especially, is limited to the classification belonging to power receiving unit 720 by output electric current.

It is noted that the general power that power delivery unit 710 can add up power receiving unit 720 determines It is equal to the aggregate power parameters P_rec_max_total adding up result.For example, when power delivery unit 710 When only wireless charging being carried out to a power receiving unit, such as power receiving unit 720, aggregate power parameters P_rec_max_total can be equal to average wireless charging power.In another example, when power delivery unit When 710 pairs of multiple power receiving units carry out wireless charging, export, for it, the power receiving unit being enabled, Aggregate power parameters P_rec_max_total may be updated as (Prec_sum_ave*device_number), is i.e. gained merit The product of the quantity of mean power Prec_sum_ave of rate receiving unit and all power receiving units.So One, power delivery unit 710 can determine whether to permit or refusal power receiving unit (such as power reception list Unit 720 or those power receiving units in any one) requirement, (power) described in such as above-listed embodiment Require.

In addition, when aggregate power parameters P_rec_max_total is allowed not less than power delivery unit 710 Maximum classification (such as peak power classification) when, power delivery unit 710 can with nominal current (for example: at that time Between length can be 2 milliseconds) respond, and then with this conveyer maximum current Itx_Max (for example, There is the time span in 2 milliseconds to 5 milliseconds) the rising pulses that formed of known percentage (such as this forward arteries and veins Punching) respond, to point out: allow to require power receiving unit (such as the power receiving unit 720) institute of output Requirement is to open charging port.But, pass when aggregate power parameters P_rec_max_total exceedes power When sending the maximum of unit 710, power delivery unit 710 can be with nominal current (a length of 2 milliseconds of its time) And and then conveyer minimum current Itx_Min (for example, has the time in 2 milliseconds to 5 milliseconds long Degree) known percentage formed falling pulse (such as this negative-going pulse) response, to point out: refuse this requirement Power receiving unit (such as the power receiving unit 720) proposed requirement of output.In addition, this requirement output Power receiving unit can be detected rising and/or the decline behavior of commutating voltage Vrect and put to sentence correlation time Whether disconnected power delivery unit permits it requires.Additionally, when power receiving unit 720 cannot detect rectified current When changing (for example, Vrect saltus step) suddenly of pressure Vrect, power receiving unit 720 can transmit phase again With package to guarantee power delivery unit 710 this information of decodable code.But this be only example explanation, not this Bright restriction.According to some embodiments, other can be applied not have complicated coding/decoding requirement to avoid mistake The simple answer method of detecting.For example, may utilize above-mentioned train of pulse (rather than Sing plus) as step The simple response of in 920 at least one.And in some examples, the available figure of the control circuit of power delivery unit The simple answer method of FSK that 17 embodiments are instructed, perform from original frequency 6.78MHz start change or Person fades to the frequency modulation(PFM) of original frequency 6.78MHz.Additionally, correlated frequency modulation result can fall into presets frequency In the range of rate, wherein predeterminated frequency scope can be more than or equal to lower frequency limit (6.78MHz-10KHz), and can Less than or equal to upper limiting frequency (6.78MHz+10KHz).

According to some embodiments, power delivery unit 710 can be detected control program according to power delivery unit and come Operation is to avoid supporting the collapse (crash) of the power receiving unit of power adjustment functions.For example, When transmitter power amplifiers reaches its maximum output, power delivery unit 710 can detect conveyer electric current Itx whether continuous decrease.If meeting above-mentioned condition reached certain number of times, then power delivery unit 710 can enter Breech lock malfunction, to notify user: need to move this power receiving unit from power delivery unit 710 Remove.For example, outside power delivery unit 710 can be according to disclosed by some embodiments in above-listed embodiment Carry out analyte detection control program to operate to determine whether this power receiving unit moves from power delivery unit 710 Removing, remaining similar detail omits at this to save length.

Those of ordinary skill in the art will be easily noted that, while keeping the teachings of the present invention, and can be right Apparatus and method of the present invention makes a large amount of modifications and variations.Therefore, above disclosure is appreciated that Only limited by the scope of claims hereof.

Claims

1. perform a method for the wireless charging control of electronic installation, wherein by means of wireless charging device Simple response performs the control of this wireless charging, and wherein this wireless charging device is in order to wireless to this electronic installation Ground charging, the method includes:

Receiving at least one package from this electronic installation, wherein this at least one package is in order to carry this electronic installation The information of wireless charging report；And

Control this wireless charging device and confirm this at least one package to produce at least one simple response.

2. the method for claim 1, it is characterised in that control this wireless charging device with produce to A few simple response confirms that the step of this at least one package includes:

Control this wireless charging device to produce this at least one simple response and do not pass through any package from this wireless charging Electric installation transmits information to this electronic installation, confirms this at least one package.

3. method as claimed in claim 2, it is characterised in that this wireless charging device does not transmit any envelope Bag is to this electronic installation, to confirm this at least one package.

4. the method for claim 1, it is characterised in that this at least one package includes that at least is random Phase delay package, wherein this at least one random phase postpones each random phase in package and postpones package tool Have and postpone relative to the random phase of time slot, and this at least one random phase postpones package in order to carry this electronics The information of at least one wireless charging report of device.

5. the method for claim 1, it is characterised in that this at least one simple response include time domain or Pulse in frequency domain.

6. the method for claim 1, it is characterised in that it is at least simple that this is detected by this electronic installation This at least one simple response is simultaneously considered as the confirmation to this at least one package, without to this at least by response One simple response performs decoding.

7. the method for claim 1, it is characterised in that this at least one simple response includes forward arteries and veins Punching.

8. method as claimed in claim 7, it is characterised in that this at least one simple response farther includes Negative-going pulse, and this direct impulse and this negative-going pulse indicate respectively different implications.

9. method as claimed in claim 8, it is characterised in that this at least one package includes from this electronics Multiple packages of device；And the instruction allowance of this direct impulse is corresponding to the work(of one of the plurality of package package Rate poll, and this negative-going pulse instruction refusal is corresponding to the power poll of another package in the plurality of package.

10. the method for claim 1, it is characterised in that this at least one simple response includes negative sense Pulse.

The device of 11. 1 kinds of wireless charging controls performing electronic installation, wherein by means of wireless charging device Simple response perform this wireless charging control, wherein this wireless charging device in order to this electronic installation without The charging of line ground, this device includes at least a portion of this wireless charging device, and this device includes:

Conveyer, is positioned at this wireless charging device, and wherein this conveyer is in order to output transport electric current；With And

Control circuit, is positioned at this wireless charging device and is coupled to this conveyer, wherein this control circuit quilt It is set to receive at least one package by the power output winding of this wireless charging device from this electronic installation, its In this at least one package in order to carry this electronic installation wireless charging report information, wherein this control circuit It is further configured to control this wireless charging device to produce at least one simple response by utilizing this conveyer Confirm this at least one package.

12. devices as claimed in claim 11, it is characterised in that this control circuit controls this wireless charging Device produces this at least one simple response and does not pass through any package from this wireless charging device to this electronic installation Transmission information, confirms this at least one package.

13. devices as claimed in claim 12, it is characterised in that this wireless charging device does not transmit any Package is to this electronic installation, to confirm this at least one package.

14. devices as claimed in claim 11, it is characterised in that this at least one package include at least one with Machine phase delay package, wherein this at least one random phase postpones each random phase in package and postpones package Have and postpone relative to the random phase of time slot, and this at least one random phase postpones package in order to carry this electricity The information of at least one wireless charging report of sub-device.

15. devices as claimed in claim 11, it is characterised in that this at least one simple response includes time domain Or the pulse in frequency domain.

16. devices as claimed in claim 11, it is characterised in that this at least one letter detected by this electronic installation This at least one simple response is simultaneously considered as the confirmation to this at least one package, without to this extremely by single response A few simple response performs decoding.

17. devices as claimed in claim 11, it is characterised in that this at least one simple response includes forward Pulse.

18. devices as claimed in claim 17, it is characterised in that this at least one simple response is wrapped further Include negative-going pulse；And this direct impulse and this negative-going pulse indicate respectively different implications.

19. devices as claimed in claim 18, it is characterised in that this at least one package includes from this electricity Multiple packages of sub-device；And the instruction allowance of this direct impulse is corresponding to one of the plurality of package package Power poll, and this negative-going pulse instruction refusal is corresponding to the power poll of another package in the plurality of package.

20. devices as claimed in claim 11, it is characterised in that this at least one simple response includes negative sense Pulse.