CN101447683B - Contactless multi-charger system and controlling method thereof - Google Patents

Contactless multi-charger system and controlling method thereof Download PDF

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Publication number
CN101447683B
CN101447683B CN2008101276865A CN200810127686A CN101447683B CN 101447683 B CN101447683 B CN 101447683B CN 2008101276865 A CN2008101276865 A CN 2008101276865A CN 200810127686 A CN200810127686 A CN 200810127686A CN 101447683 B CN101447683 B CN 101447683B
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charger
wireless
signal
piece
power transmission
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CN101447683A (en
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郑春吉
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Intel Corp
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郑春吉
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Priority claimed from KR1020070123752A external-priority patent/KR100971734B1/en
Priority claimed from KR1020070123751A external-priority patent/KR100998683B1/en
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Publication of CN101447683A publication Critical patent/CN101447683A/en
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/40—Circuit arrangements or systems for wireless supply or distribution of electric power using two or more transmitting or receiving devices
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M10/4257—Smart batteries, e.g. electronic circuits inside the housing of the cells or batteries
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
    • H02J50/12—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/60—Circuit arrangements or systems for wireless supply or distribution of electric power responsive to the presence of foreign objects, e.g. detection of living beings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/80—Circuit arrangements or systems for wireless supply or distribution of electric power involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/90—Circuit arrangements or systems for wireless supply or distribution of electric power involving detection or optimisation of position, e.g. alignment
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0042—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction
    • H02J7/0044—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction specially adapted for holding portable devices containing batteries
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The invention discloses a wireless multi-charger system capable of saving the total charging time of a large number of wireless power transmission devices since one wireless multi-power transmission device includes a plurality of the wireless power transmission devices so that a large number of the wireless power transmission devices can be charged with electricity, and preventing the damage of the wireless power transmission devices and the wireless multi-power transmission device although foreign substances are put on charger blocks that are not charged. The wireless multi-charger system (A) according to the present invention includes an external body formed as a wireless charger case (11), wherein the wireless charger case has a wireless charger table (12) formed in an upper surface thereof, wherein the wireless charger table has a plurality of charger blocks (14), each of which includes a primary charging core (13), wherein the full-bridge resonant converter is present in a plural form and coupled respectively to a plurality of the charger blocks, wherein a multi-gate driver module is provided to transmit a converted power signal to each of a plurality of the full-bridge resonant converters under the control of the central controller, and wherein a reception signal processor module is coupled to a plurality of the charger blocks for processing a signal transmitted from the wireless power transmission device (30) and supplies the processed signal to the central controller.

Description

Contactless multi-charger system and control method thereof
Technical field
The present invention relates to particularly wireless charger system; Relate more specifically to save the contactless multi-charger system of the total charging time of a large amount of wireless power transmission equipment; This wireless many electric energy transfer devices comprise a plurality of wireless power transmission equipment, therefore, and can be to a plurality of wireless power transmission equipment charges; Even and when on the charger piece that is not recharged, foreign matter being arranged, also can prevent the damage of wireless power transmission equipment and wireless many electric energy transfer devices.
Background technology
Usually, because the user uses portable mobile wireless electric energy transmission equipment when mobile, therefore, and common portable mobile wireless electric energy transmission equipment, for example mobile phone, PDA, PMP, DMB terminal, MP3 or notebook computer do not provide traditional domestic power supply.Therefore, detachable battery or rechargeable battery need be installed in portable mobile wireless electric energy transmission equipment.
But as the charger of the batteries charging that is used to these wireless power transmission equipment, it has the terminal power-supply system, in this system, inserts electricity from conventional power source, and through power line and power terminal power supply is offered battery pack.But, when when the terminal power-supply system is supplied power, be connected with charger/, can produce the instantaneous discharge phenomenon owing to the electrical potential difference of battery pack both sides end points from the charger gap in battery pack.Therefore, along with foreign matter is accumulated on end points, the possibility that battery pack is caught fire is increasing.And because these end points are directly exposed in the air, therefore owing to the for example self discharge in humidity or dust, the life-span of charger and battery pack and performance may reduce.
In order to solve the above-mentioned problem that relates to the terminal power-supply system, wireless charger has been proposed.That is to say, when the portable terminal module that battery pack is installed when inside is placed on the primary coil of wireless charger from above, by the secondary coil of battery to traditional wireless charger charging.That is to say, in secondary coil, produced induced electromotive force, in secondary coil, be filled with the induced current that electromotive force produces by formed magnetic field in the primary coil.
But because it only can supply power to portable terminal module, so these traditional wireless chargers do not have practicality, and it also is difficult to other application.
And, thereby because near magnetic field electric energy (power, or the power) loss in the increase primary coil that can change metal being placed on the magnetic field that primary coil produces the time, this can cause wireless charger to damage.
Summary of the invention
Therefore; The present invention is used to address the above problem; Therefore, an object of the present invention is to provide contactless multi-charger system, this system can save the total charging time of a large amount of wireless power transmission equipment; This is because wireless many electric energy transfer devices comprise a plurality of wireless power transmission equipment, therefore can be to a plurality of wireless power transmission equipment charges.
Simultaneously; Another object of the present invention provides contactless multi-charger system, and this system can work as when for example the foreign matter of metal places on the charger piece that is not recharged through stopping the damage that electric energy transmitting prevents wireless power transmission equipment and wireless many electric energy transfer devices.
And; Also purpose of the present invention provides contactless multi-charger system; Even this system also can improve charge efficiency through stably carrying out continuous charging operations when the current wireless power transmission equipment that is charging is contacted with to new wireless power transmission equipment charge the time.
To achieve these goals, one embodiment of the invention provides contactless multi-charger system (A), comprising: wireless many electric energy transfer devices 10; Be used for transmitting electric power signal with wireless mode to wireless power transmission equipment 30, wherein wireless many electric energy transfer devices 10 comprise the wireless charger shell 11 that forms external shell, and this wireless charger shell 11 has the full-bridge resonance converter 22 and central controller 21 that is installed in wherein; Be used for sending electric power signal with wireless mode to wireless power transmission equipment 30, wherein wireless charger shell 11 has the wireless charger platform 12 that is formed in its upper surface, and this wireless charger platform 12 has a plurality of charger pieces 14; Each piece all comprises elementary charging iron core (core) 13, and wherein, full-bridge resonance converter 22 exists with a plurality of forms; And be connected to said a plurality of charger piece 14 respectively; Wherein, be provided with multi-door Drive Module 23, with under the control of central controller 21; In a plurality of full-bridge resonance converters 22 each is sent the electric power signal after the conversion; And wherein, be provided with and receive signal processor module 24, this reception signal processor module 24 is connected to a plurality of charger pieces 14; Be used for the signal that is sent from wireless power transmission equipment 30 is handled, and the signal after will handling offers central controller 21.
In this case, wireless charger shell 11 can have electric power on/off switch 151; The TIP 152 that is used for input signal; With LCD panel 153 and rechargeable LED 154; The charged state that is used for display radio charger platform 12 and a plurality of charger pieces 14 and wireless power transmission equipment 30; All these is positioned at the front of this shell 11, and this shell 11 can comprise the power supply unit 25 that is formed on wherein.
Simultaneously, central controller 21 can comprise the power supply piece 211 that is connected to power supply unit 25, is used to provide the power supply of wireless many electric energy transfer devices 10; Signal IOB 212 is used for to LCD panel 153 and rechargeable LED 154 output shows signal; Be connected to the door output signal processor piece 213 of multi-door Drive Module 23, be used to send the electric power signal of being sent from elementary charging iron core 13; Be connected to the received signal processor piece 214 of a side of elementary charging iron core 13; Be used for handling from the signal that receives signal processor module 24 transmissions, this reception signal processor module 24 is used for the signal that is sent from wireless power transmission equipment 30 is handled; With master controller 210, be used for control power supply piece 211, signal IOB 212, door output signal processor module 213 and received signal processor piece 214.
In addition; Central controller 21 can be controlled the request to the charging capacity data message of wireless device 30; The information data of the charging capacity that reception is sent from wireless device 30 and the voltage data of electric power signal are with the voltage data of the electric power signal confirming to be sent; The frequency of electric power signal is carried out the algorithm computing compensating the electric energy of transmission with respect to the voltage data from the electric power signal of determined wireless device 30, thereby and the transmission of controlling electric power signal with the frequency of compensation send the electric power signal of compensation to wireless device 30.
Simultaneously, wireless power transmission equipment 30 can comprise secondary charging iron core 32, is used for the induced current that magnetic field produces is sent to the elementary charging iron core 13 of corresponding wireless many electric energy transfer devices 10; Be connected to the rectifier block 33 of secondary charging iron core 32, be used for induced current is carried out rectification; Be connected to the smoothing filter piece 34 of rectifier block 33, be used for current filtering; Be connected to the charger IC piece 36 of smoothing filter piece 34, be used for power source charges battery 35; Between charger IC piece 36 and battery 35, protective circuit piece 37 is provided, is used for detecting electric current, and send the information of the charged state of battery 35 to electric energy receiver controller 39 in battery 35 chargings; Positive voltage regulators piece 38 is used for to electric energy receiver controller 39 power supply being provided; With electric energy receiver controller 39, be used to control rectifier block 33, smoothing filter piece 34, charger IC piece 36, protective circuit piece 37 and positive voltage regulators piece 38.
In addition, electric energy receiver controller 39 can comprise the electric power signal processor piece 393 that is connected to smoothing filter piece 34, is used to handle the data information transmission signal about the electric power signal that is received from wireless power transmission equipment 10; Be connected to the charging signals processor piece 394 of charger IC piece 36 and protective circuit piece 37, be used to handle the charging capacity that is used for battery 35 and the data information transmission signal of charged state; Signal processor block 392 is used under the control of device controller 390, handles to be sent to the charging capacity information of wireless many electric energy transfer devices 10 and the data message of intrinsic (native) ID; Device storage unit 391 is used to store the data message of intrinsic ID, the charging capacity that temporary transient storage is sent from protective circuit piece 37 and charger IC piece 36 and the data message of charged state and store the data of being sent from wireless many electric energy transfer devices 10; With device controller 390.
In addition; The master controller 210 of wireless many electric energy transfer devices 10 is except that the rechargeable electrical energy signal that is used to be controlled to the charger piece 14 that is charging; Can also control the transmission of the own code signal that is used for each charger piece 14; Device controller 390 can be analyzed the own code signal that is used for corresponding charger piece 14 that is sent from wireless many electric energy transfer devices 10; And device storage unit 391 storage slave unit controllers 390 are sent, and are used for the data value of the own code signal of corresponding charger piece 14.
In addition, device controller 390 can be controlled to wireless many electric energy transfer devices 10 transmission data values, and this data value comprises the magnitude of voltage of the electric power signal of the request signal that is received from wireless many electric energy transfer devices 10 being used for of receiving.
In order to realize above purpose, an alternative embodiment of the invention provides a kind of method, is used for control like any defined contactless multi-charger system of claim 1 to 4 (A), and this method comprises:
1) in each cycle; Through the wireless many electric energy transfer devices 10 transmission electric power signal of elementary charging iron core 13 from contactless multi-charger system (A); This electric power signal comprises request (call) signal of the intrinsic ID value that is used to ask wireless power transmission equipment 30, and waits for the reception (S01) of the response signal of electric power signal;
2), confirm through the detection signal that inspection is detected whether object exists, and confirm whether detected detection signal is normal signal (S02) according to the load regulation in one in the charger piece 14 the elementary charging iron core 13;
3), determined whether to receive the intrinsic ID signal (S03) of wireless power transmission equipment 30 through detected reception signal is analyzed;
4) when the intrinsic ID signal of confirming to be received be during from intrinsic ID that wireless power transmission equipment 30 is sent; Through multi-door Drive Module 23, charge electric energy transmittings (full charged transmission power) (S04) from elementary charging iron core 13 transmissions of corresponding charger piece 14 are complete;
5) regulate charged level (S05) to the information of wireless power transmission equipment 30 request charged states, and according to the charge information of wireless power transmission equipment 30;
6), on LCD panel 153 or rechargeable LED 154, show complete charged state, and stop charging operations corresponding to corresponding charger piece 14 when when wireless power transmission equipment 30 receives the information of complete charged state.
In this case; Object detection step (S02) can comprise: when the detection signal that is detected through respective primary charging iron core 13 and reception signal processor module 24 according to the load regulation that this object produced is not normal signal, convert a plurality of charger pieces 14 into the foreign matter detecting pattern; When the foreign matter that is detected is metal or electronic equipment, in LCD panel 153 or rechargeable LED 154, shows the foreign matter mistake, and on corresponding charger piece 14, stop charging operations (S201).
In addition, charging controlled step (S05) can comprise:
Data message to wireless power transmission equipment 30 request charging capacitys;
The data message of the charging capacity that reception is sent from wireless power transmission equipment 30 and the voltage data of electric power signal;
The voltage data of the electric power signal of confirming to be sent from wireless power transmission equipment 30;
Frequency to electric power signal is carried out the algorithm computing, the transmission electric energy of the voltage data that is used for electric power signal that is sent from wireless power transmission equipment 30 with compensation;
Frequency with compensation is sent electric power signal, to send the electric power signal of compensation to wireless power transmission equipment 30.
As stated; The total charging time that can be used to save a large amount of wireless power transmission equipment according to contactless multi-charger system of the present invention; This is because wireless many electric energy transfer devices comprise a plurality of wireless power transmission equipment, therefore can be to a large amount of wireless power transmission equipment charges.
Simultaneously, contactless multi-charger system according to the present invention can be through stopping the electric energy transmitting on the corresponding charger piece on foreign matter is placed on the charger piece that does not charge the time, thereby prevent that wireless power transmission equipment and wireless many electric energy transfer devices from damaging.
And,, thereby can help improving charge efficiency through stably continuing charging operations even contactless multi-charger system according to the present invention is contacted with to new wireless power transmission equipment charge the time at the wireless power transmission equipment of current charging.
Description of drawings
Fig. 1 is the stereogram of expression according to wireless many electric energy transfer devices of contactless multi-charger system of the present invention;
Fig. 2 is the control block diagram of expression according to wireless many electric energy transfer devices of contactless multi-charger system of the present invention;
Fig. 3 is the block diagram of expression according to wireless many electric energy transfer devices of contactless multi-charger system of the present invention;
Fig. 4 is the control flow chart of expression according to wireless many electric energy transfer devices of contactless multi-charger system of the present invention;
Fig. 5 is the control flow chart of expression according to wireless many electric energy transfer devices of contactless multi-charger system of the present invention;
Fig. 6 is that expression is according to the control block diagram that is used to control the method for contactless multi-charger system of the present invention;
Fig. 7 to 12 representes according to the present invention the diagram of the power control efficiency in contactless multi-charger system;
Figure 13 is a structure chart of representing wireless power transmission equipment according to an illustrative embodiment of the invention;
Figure 14 is a structure chart of representing the central controller of wireless power transmission equipment according to an illustrative embodiment of the invention;
Figure 15 and 16 is respectively exploded view and the side cut away view of expression according to wireless power transmission equipment of the present invention;
Figure 17 is the diagram of the efficient of expression wireless power transmission equipment according to the present invention in the charge/discharge test of repeatability;
Figure 18 is a circuit diagram of representing the wireless device controls module of wireless power transmission equipment according to an illustrative embodiment of the invention;
Figure 19 is a circuit diagram of representing the rectifier means of wireless power transmission equipment according to an illustrative embodiment of the invention.
Embodiment
Hereinafter, will combine accompanying drawing to describe preferred implementation of the present invention in detail.
Fig. 1 is the stereogram of expression according to wireless many electric energy transfer devices of contactless multi-charger system of the present invention; Fig. 2 is the control block diagram of expression according to wireless many electric energy transfer devices of contactless multi-charger system of the present invention; Fig. 3 is the block diagram of expression according to wireless many electric energy transfer devices of contactless multi-charger system of the present invention; Fig. 4 is the control flow chart of expression according to wireless many electric energy transfer devices of contactless multi-charger system of the present invention; Fig. 5 is expression according to the control flow chart of wireless many electric energy transfer devices of contactless multi-charger system of the present invention and Fig. 6 is expression according to the control block diagram that is used to control the method for contactless multi-charger system of the present invention.
Fig. 7 to 12 representes according to the present invention the diagram of the power control efficiency in contactless multi-charger system.The power control of Fig. 7 to 12 expression when wireless power transmission equipment 30 moves with respect to wireless many electric energy transfer devices 10.
Figure 13 representes that the structure chart of wireless power transmission equipment according to an illustrative embodiment of the invention and Figure 14 are the structure charts of representing the central controller of wireless power transmission equipment according to an illustrative embodiment of the invention.
Figure 15 and 16 is respectively exploded view and the side sectional view of expression according to wireless power transmission equipment of the present invention; Figure 17 is the diagram of the efficient of expression wireless power transmission equipment according to the present invention in the charge/discharge test of repeatability; Figure 18 is a circuit diagram of representing the wireless device controls module of wireless power transmission equipment according to an illustrative embodiment of the invention, and Figure 19 is a circuit diagram of representing the rectifier means of wireless power transmission equipment according to an illustrative embodiment of the invention.
That is to say, shown in Fig. 1 to 19, comprise wireless many electric energy transfer devices 10, be used for sending electric power signal to wireless power transmission equipment 30 with wireless mode according to contactless multi-charger system of the present invention (A).
As shown in Figure 1, wireless many electric energy transfer devices 10 have the wireless charger shell 11 that forms shell.In this example, full-bridge resonance converter 22 and central controller 21 are installed in this wireless charger shell 11, are used for sending electric power signal to wireless power transmission equipment 30 with wireless mode.
Simultaneously, the upper surface at wireless charger shell 11 provides wireless charger platform 12.In this example, in wireless charger platform 12, have a plurality of charger pieces 14, each all has elementary charging iron core 13.
Therefore, full-bridge resonance converter 22 provides in a variety of forms, and is connected to a plurality of charger pieces 14 respectively.And, multi-door Drive Module 23 is provided, with under the control of central controller 21, each in a plurality of full-bridge resonance converters 22 is sent the electric power signal of conversion.And, providing to receive signal processor module 24, it is connected to a plurality of charger pieces 14, is used for the signal that is sent from wireless power transmission equipment 30 is handled, and the signal after central controller 21 provides processing.
Simultaneously, wireless charger shell 11 has the electric power on/off switch 151 that all is formed on this shell front; The TIP 152 that is used for input signal; With LCD panel 153 and rechargeable LED 154, be used for the charged state of display radio charger platform 12 and a plurality of charger pieces 14 and wireless power transmission equipment 30, this shell 11 also comprises the power supply unit 25 that is formed on wherein.
Therefore, as shown in Figure 1, with portable mobile wireless electric energy transmission equipment 30, for example mobile phone, PDA, PMP, DMB terminal, MP3 or notebook computer are placed on a plurality of charger pieces 14 that are formed on the wireless charger shell 11.Like this, when portable mobile wireless electric energy transmission equipment 30 being placed on 14 last times of a plurality of charger piece, electric energy transfer device 10 detects wireless power transmission equipment 30, and carries out charging operations.
Simultaneously; As shown in Figure 2; With reference to the structure of the central controller 21 of the charging operations that is used for controlling wireless many electric energy transfer devices 10, this central controller 21 comprises the power supply piece 211 that is connected to power supply unit 25, and being used for provides power supply to wireless many electric energy transfer devices 10; Signal IOB 212 is used for to LCD panel 153 and rechargeable LED 154 output shows signal; Be connected to the door output signal processor piece 213 of multi-door Drive Module 23, be used to send the electric power signal of being sent from elementary charging iron core 13; Be connected to the received signal processor piece 214 of a side of elementary charging iron core 13; Be used for the signal that is sent from reception signal processor module 24 is handled, this signal processor module 24 is used for the signal that is sent from wireless power transmission equipment 30 is handled; With master controller 210, be used for control power supply piece 211, signal IOB 212, door output signal processor piece 213 and received signal processor piece 214.
In addition; As shown in Figure 3; The primary structure of reference radio ability transmission equipment 30; In this electric energy transfer device 14 last times of formed a plurality of charger piece in the wireless charger shell 11 that is placed in wireless many electric energy transfer devices 10, be recharged, and this wireless power transmission equipment 30 comprises secondary charging iron core 32, is used for induced current is sent to the elementary charging iron core 13 of corresponding wireless many electric energy transfer devices 10; Be connected to the rectifier block 33 of secondary charging iron core 32, be used for induced current is carried out rectification; Be connected to the smoothing filter piece 34 of rectifier block 33, be used for current filtering; Be connected to the charger IC piece 36 of smoothing filter piece 34, be used for power source charges battery 35; Protective circuit piece 37 (PCM) between charger IC piece 36 and battery 35; Be used for detecting charging current at battery 35; And send the information of the charged state of batteries 35, and detect overvoltage, under voltage, electric current and the short circuit of battery to electric energy receiver controller 39; Positive voltage regulators piece 38 is used for to electric energy receiver controller 39 power supply being provided; With electric energy receiver controller 39, be used to control rectifier block 33, smoothing filter piece 34, charger IC piece 36, protective circuit piece 37 and positive voltage regulators piece 38, and generation and the charged state of monitoring ID.
And electric energy receiver controller 39 comprises the electric power signal processor piece 393 that is connected to smoothing filter piece 34, is used to handle transmission signals, the data message of the electric power signal that this transmission signals is used for being received from wireless power transmission equipment 10; Be connected to the charging signals processor piece 394 of charger IC piece 36 and protective circuit piece 37, be used for the charging capacity of battery 35 and the data information transmission signal of charged state are handled; Signal processor block 392 is used under the control of device controller 390 information of the charging capacity that sends to wireless many electric energy transfer devices 10 and the data message of intrinsic ID are handled; Device storage unit 391 is used to store the data message of intrinsic ID, the charging capacity and the data message of charged state that temporary transient storage is sent from protective circuit piece 37 and charger IC piece 36, and store the data of being sent from wireless many electric energy transfer devices 10; And device controller 390.
The contactless multi-charger system that as above disposes according to the present invention (A); Advantage is can be simultaneously to a plurality of wireless power transmission equipment 30 chargings, and this is because the wireless charger platform 12 that is formed on wireless many electric energy transfer devices 10 is made up of a plurality of charger piece 14.
Charging operations according to contactless multi-charger system of the present invention (A) is described below in further detail.
1) at first; Under the control of the central controller 21 of wireless many electric energy transfer devices 10 of contactless multi-charger system (A); Carry out standby mode step (S01); Wherein electric power signal was sent through gate signal path 234 in each cycle, and this path is the corresponding elementary charging iron core 13 of each charger piece 14 of the multi-door Drive Module 23-of door output signal processor piece 213-full-bridge resonance converter 22-.As stated; In standby mode step (S01); Electric power signal was all sent through elementary charging iron core 13 in each cycle, and this electric power signal comprises the request signal of the intrinsic ID value that is used to ask wireless power transmission equipment 30, and the reception of the response signal of wait electric power signal.
2) afterwards; When the request signal that in standby mode step (S01), sends intrinsic ID value and when waiting for the reception of response signal of this request signal; In the elementary charging iron core 13 of a charger piece 14, carry out object detection step (S02), this step receives detection signal according to load regulation.When detecting any object as stated; Can on charger piece 14, place can be with the portable mobile wireless electric energy transmission equipment of wireless mode charging; For example mobile phone, PDA, PMP, DMB terminal, MP3 or notebook computer, and can not be with the conditional electronic equipment of wireless mode charging.Thus, wireless many electric energy transfer devices 10 receive signal according to load regulation as detection signal, and this load regulation is to be produced by above-mentioned any object, and simultaneously through confirming whether this object is placed on the existence that object is confirmed at charger piece 14 tops.
When using nonmetallic materials and object to move the load regulation that causes can not produce particular problem, wireless many electric energy transfer devices 10 can be transformed into standby mode step (S01).But, in the situation of the electronic equipment that can not use wireless mode to charge, may produce and misoperation owing to heat takes place charging operations, but can in the situation of the wireless power transmission equipment 30 that can charge, not take place with wireless mode.
Therefore, object detection step (S02) comprising: detect foreign matter (parasitic metal detection (PMD)) (S021).That is to say; Foreign matter detects step (S021) and comprising: confirm that detection signal is a normal signal, this detection signal is detected according to the load regulation that on a plurality of charger pieces 14, is produced by object with reception signal processor module 24 through corresponding elementary charging iron core 13.Confirm whether the signal that under central controller 21 controls, is sent is abnormal signal, and the signal of this abnormal signal is confirmed and can not be drawn through relatively receiving signal according to load regulation.Therefore; When corresponding charger piece 14 detects foreign matter; Corresponding 14 of charger pieces are transformed into the foreign matter detecting pattern; And when detected foreign matter is metal or electronic equipment, on LCD panel 153 or rechargeable LED 154, shows the foreign matter mistake, and be operating as the charging operations (parasitic metal detection (PMD) mistake) that stops corresponding charger piece 14.
3) still, when the reception signal of confirming to be detected is to be used for can be with the data of the intrinsic ID of the wireless power transmission equipment 30 of wireless mode charging the time, be used for according to the load regulation analysis and the intrinsic ID of the signal confirming to be detected confirms step (S03).In standby mode step (S01), will be used for signal that searching radio can transmission equipment 30 and send with the request signal of the data value of the intrinsic ID that is used to ask wireless power transmission equipment 30.Therefore,, the induced current of secondary charging iron core 32 is carried out rectification, afterwards, carry out filtering through smoothing filter piece 34 through 30 rectifier block 33 in the wireless power transmission equipment.In this process; Device controller 390 to electric energy receiver controller 39 sends the intrinsic ID information requested that is received; Through signal processor block 392, send the intrinsic ID data value that is stored in wireless power transmission equipment 30 in the device storage unit 391, corresponding afterwards to wireless many electric energy transfer devices 10.Therefore; Confirm at intrinsic ID under the situation of step (S03); In the reception signal processor module 24 of the elementary charging iron core 13 that is connected to wireless many electric energy transfer devices 10; Reception signal to according to load regulation is handled, and sends through the master controller 210 of received signal processor piece 214 to central controller 21 afterwards.Afterwards; Master controller 210 confirms whether the data that received are normal intrinsic ID data of wireless power transmission equipment 30; Afterwards, whether be to confirm that from the intrinsic ID data that normal wireless power transmission equipment 30 is sent whether wireless power transmission equipment 30 be the normal device that can be recharged with wireless mode through the data confirming to be received.
4) afterwards; When the data that confirm to be received are during from intrinsic ID that wireless power transmission equipment 30 is sent; In multi-door Drive Module 23, carry out full rechargeable electrical energy transmitting step (S04), be used for sending full charging electric energy transmitting from the elementary charging iron core 13 of corresponding charger piece 14.
With reference to the full rechargeable electrical energy transmitting step (S04) in wireless many electric energy transfer devices 10; Confirm the 14 last times of charger piece that normal wireless power transmission equipment 30 places master controller 210 when the master controller 210 of central controller 21, then master controller 210 transmits control signal and electric power signal through door output signal processor piece 213 and gate signal path 234.
Because control signal is sent to multi-door Drive Module 23; Be sent out along with the transmission of electric power signal afterwards; And through the elementary charging iron core 13 transmission electric power signal of corresponding full-bridge resonance converter 22 to corresponding charger piece 14; Owing to the induced field that is produced, electric power signal is sent to wireless power transmission equipment 30 afterwards.
In above-mentioned a series of processes, will be described in more detail below the structure of gate signal path 234 and multi-door Drive Module 23.
At first, gate signal path 234 can be made up of a plurality of signal path that corresponds respectively to each charger piece 14.Like this, through each corresponding signal path in gate signal path 234, to the control signal of multi-door Drive Module 23 transmission master controllers 210.In this case, multi-door Drive Module 23 can comprise gate signal converter unit 232, is used to handle gate signal; Output driver 233 is used for the signal that sends after handling to corresponding full-bridge resonance converter 22; And door controller 231.
Therefore, gate signal path 234 is made up of a plurality of signal path that corresponds respectively to each charger piece 14.In this case; Master controller 210 is configured to the control signal of sending separately to charger piece 14 respectively through the door output signal processor piece 213 that comprises a plurality of output signal processor parts, and the gate signal converter unit 232 of multi-door thus Drive Module 23 can be made up of a plurality of commutator assembles that correspond respectively to charger piece 14.
And door controller 231 is configured to control signal transmission/reception and the signal processing in the multi-door Drive Module 23.According to this exemplary embodiment, can the control signal of being sent from master controller 210 be sent to the parts that correspond respectively to charger piece 14, and send electric power signal, with the stable induced field that sends.Like this, the suitable many electric energy transfer devices 10 of micro radio of this structure.
Simultaneously; Another exemplary embodiment according to multi-door Drive Module 23 and gate signal path 234; It is single path that gate signal path 234 can be configured to, and the gate signal converter unit 232 of multi-door Drive Module 23 also can be configured to be single converting member (or a plurality of converting member).
In this, master controller 210 transmits control signal to multi-door Drive Module 23.In this case; Before sending switching signal; Control signal is sent to corresponding charger piece 14 with coded signal; The door controller 231 that receives the multi-door Drive Module 23 of control signal confirms to be used for which charger piece 14 from the control signal that master controller 210 sends, and can the electric power signal after the conversion be sent to full-bridge resonance converter 22 as coded signal, to be used for corresponding charger piece 14.
Like this, can simplify the structure of master controller 210 and multi-door Drive Module 23, and this structure can be suitable for making large-scale wireless many electric energy transfer devices 10 and wireless power transmission equipment 30.
5) afterwards, carry out charging controlled step (S05),, and control charged level according to the charge information of the wireless power transmission equipment 30 that is received to the information of wireless power transmission equipment 30 request charged states.
Afterwards; Wireless power transmission equipment 30 control charger IC pieces 36 and protective circuit piece 37 are to charge to battery 35, after full rechargeable electrical energy transmitting step (S04); Under the control of device controller 390, transmit power supplys to battery 35 through rectifier block 33 and smoothing filter piece 34.
In order to carry out charging operations, device controller 390 receives the information of the charged state of battery 35 through charger IC piece 36 and protective circuit piece 37, and in device storage unit 391, temporarily stores the information of charged state.Afterwards, when battery 35 is when being full of the state of electricity, stop charging operations through control charger IC piece 36.And the information through signal processor block 392 complete charged states is produced in secondary charging iron core 32.Simultaneously, when the voltage of the battery that is recharged 35 is lower than preset reference voltage, once more battery 35 is transformed into charged state, to carry out another time charging operations.But, when confirming that battery 35 is when being full of the state of electricity, then stops battery 35 chargings (not having operation).
Therefore, the master controller 210 of wireless many electric energy transfer devices 10 is all asked the information of charged level in each step of the wireless power transmission equipment 30 of charging controlled step (S05).In this case, the method for device controller 390 working loads of wireless power transmission equipment 30 adjusting is sent the information data of the charged state of battery 35.
As stated, the information of the charged state that will be sent from wireless power transmission equipment 30 is sent to master controller 210, and this master controller 210 is connected to received signal processing block 214 through receiving signal processor module 24.Receive signal processor module 24 and comprise a plurality of reception signal input unit 243, be used for receiving at each charger piece 14 detected signals through load regulation; Receive signal processor unit 242, be used for load regulation, converting sensed signals according to each charger piece 14; And receive signal controller 241, be used to control the operation that receives signal processor module 24.
Therefore; In receiving signal processor module 24; According to each charger piece 14, the transmission information translation of the wireless power transmission equipment 30 that will receive through load regulation is a signal, and the signal after will changing through received signal processor piece 214 is sent to master controller 210.
Receive signal processor module 24 and can comprise a plurality of amplifiers, LPF or the logical circuit etc. that are installed in wherein usually.Particularly; For reception signal processor unit that receives signal processor module 24 242 and the configuration that receives signal path 244; Receive signal processor unit 242 and can be configured to single or a plurality of parts with reception signal path 244; Thereby produce the own code of each corresponding charger piece 14, as top described in the exemplary embodiment of multi-door Drive Module 23.
That is to say; When the signal according to load regulation is sent to each charger piece 14; A plurality of according to an exemplary embodiment of the present invention reception signal processor units 242 are handled owned signal, and through reception signal path 244 separately the signal of handling are sent to master controller 210.Like this, the signal that in corresponding charger piece 14, produces through independent signal processing, is sent to master controller 210 through the path, and in master controller 210, handles, thereby can stably operate.Simultaneously, native system goes for mini-plant, like above-mentioned multi-door Drive Module 23.
In addition; Receive signal processor unit 242 and receive the situation that signal path 244 all is configured to the exemplary embodiment of single parts for each; The reception signal processor unit 242 of multi-door Drive Module 23 confirms the signal that receives is to be used for which charger piece 14; This according to the signal of the reception of load regulation under the control that receives signal controller 241; And when through the reception signal after the 214 transmission processing of received signal processor module, the reception signal after handling is classified with the coded signal that is used for corresponding charger piece 14.Afterwards, master controller 210 receives the reception signal that is used for each charger piece 14, with each signal classification, and the category processing signals.Like this, the structure of each parts can be as the simplified structure of whole parts.
Thus; Wireless many electric energy transfer devices 10 are according to corresponding charger piece 14; To the data message of wireless power transmission equipment 30 request charged level, this wireless power transmission equipment 30 is through multi-door Drive Module 23 and the charging in corresponding charger piece 14 of elementary charging iron core 13.Like this, corresponding wireless power transmission equipment 30 sends the data message of the charged level of battery 35, and this data message is received through charger IC piece 36 and protective circuit piece 37.
Simultaneously, the elementary charging iron core 13 through each charger piece 14 sends these information to master controller 210 with reception signal processor module 24.
Afterwards; The master controller 210 of central controller 21 is according to the data of the charged level of corresponding wireless power transmission equipment 30; Form with letter or image; On LCD panel 153, show information through signal IOB 212, and control rechargeable LED 154 shows that corresponding charger piece 14 is charging about charged level or state.Afterwards, LCD panel 1 53 shows the quantity of charged state and corresponding charger piece 14.Simultaneously, each in LCD panel 153 each charger pieces 14 of demonstration is opened rechargeable LED 154.For example, when the lamp of charge closing LED 154, then stop the charging operations of battery 35, when lamp glimmers, then, when battery 35 is full of electricity, open green light,, when foreign matter mistake, intrinsic ID mistake for example take place, then open red light when making a mistake to battery 35 chargings.As stated, can carry out the charging operations of battery 35 in every way.
In a series of charging operations; When wireless power transmission equipment 30 when the corresponding charger piece 14 of wireless charger platform 12 moves; Can change through the electric power signal that will be sent from the corresponding charger piece 14 of wireless many electric energy transfer devices 10, make the charge efficiency in the wireless power transmission equipment 30 reach maximum.
6) last; When receiving the information of the state that is full of electricity from wireless power transmission equipment 30; Show the state that is full of electricity at LCD panel 153 or on corresponding to the LED 154 of each charger piece 14; And stop charging operations be full of electricity condition step (S06), to stop the charging operations of corresponding charger piece 14.
When the user removes charged wireless power transmission equipment 30 from the charger piece 14 that has stopped charging operations, and once more input begin to operate signal the time, preferably this charger piece 14 is at standby mode.
And; In when, in the foreign matter detection step that is detecting foreign matter foreign matter mistake or ID mistake having taken place when; In corresponding charger piece 14, show this mistake; And after stop the charging operations of corresponding charger piece 14, to guarantee the stability of wireless many electric energy transfer devices 10, wireless power transmission equipment 30 or other metal materials and electronic equipment.Like this, when stopping the charging operations of corresponding charger piece 14 owing to generation is wrong, this charger piece 14 is in standby mode, in charger piece 14, has imported Restart Signal up to the user.
Certainly, when having mistake or full state, periodically send pulse signal to charger piece 14.In this case, when charger piece 14 is to use according to the signal sensing of load regulation when mistake has solved, when for example having removed the wireless power transmission equipment 30 that is full of electricity or foreign matter, convert charger piece 14 into standby mode usually.
Simultaneously, the master controller 210 of wireless many electric energy transfer devices 10 can be configured to control the own code signal that the charger piece that is charging will be used for each charger piece 14 and sends with the rechargeable electrical energy signal.Afterwards; Device controller 390 can be configured to; The own code signal that is used for corresponding charger piece 14 to being sent from wireless many electric energy transfer devices 10 is analyzed, and device storage unit 391 can be configured to store the data value of the own code signal that is used for corresponding charger piece 14 that slave unit controller 390 sent.
In addition; Device controller 390 is configured to; Control will be sent to the data value of magnitude of voltage of the electric power signal of wireless many electric energy transfer devices 10, and the magnitude of voltage of the electric power signal of this reception is from wireless many electric energy transfer devices 10, to receive to be used for the request signal that received.
Simultaneously, can be provided for the power supply of the USB port of computer to power supply unit 25, from the power supply of AC adapter input, cigar lighter socket (cigar Jack) etc.
Simultaneously, temperature detecting unit 26 is provided, is used for, detect the temperature of corresponding charger piece 14 or wireless many electric energy transfer devices 10 in charging process.Afterwards, when corresponding charger piece 14 is heated to the high temperature that detects at temperature detecting unit 26, then stop the operation of corresponding charger piece 14, when whole wireless many electric energy transfer devices 10 are heated to high temperature, then stop the operation of whole system.
In addition, can or receive in the signal processor module 24 at each power supply unit 25, multi-door Drive Module 23, each full-bridge resonance converter 22 current detecting part all is provided, be used for the monitoring current flow.In this case, when learning that through the current monitoring parts corresponding component becomes overcurrent and overvoltage condition, then stop the operation of the relevant charger piece 14 of corresponding component with it, or the operation of halt system, and send rub-out signal.
Below, Figure 13 representes the structure chart of wireless many electric energy transfer devices according to an exemplary embodiment of the present invention.Reference is the structure of wireless many electric energy transfer devices according to an exemplary embodiment of the present invention; Wireless power transmitter comprises control logic; Be used for the receiver module interior with being installed in wireless power transmission equipment and carry out communicating by letter of IC, this wireless power transmission equipment is wireless device; With preset driver (pre-driver), be used to drive full-bridge mode of resonance transducer and use LC resonance to produce induced electromotive force.And, can the SPI controller be installed in wireless power transmission, be used for communicating by letter with EEPROM, EEPROM can store various parameters.The LCD of the charged state that simultaneously, the input end of clock mouth that is used for system operation can be installed in wireless power transmitter, is used for display radio equipment is backlight and be used to control the input/output end port of the port of LCD.And; Wireless power transmitter can comprise LED input/output end port, the VCC that is used for the DC power supply and GND input port and the warning port of the operation that is used to check wireless device; The temperature that is used for the detected transmission coil; And, stop the operation of wireless device when built-in comparator confirms that the temperature of transmission coil is higher than predetermined temperature.
Simultaneously, Figure 14 representes the structure chart of the central controller of wireless many electric energy transfer devices according to an exemplary embodiment of the present invention.At this, central controller is expressed as a module.This independent chip has the function of the wireless power transmission of making; FET presets driver and has output function; And comparator is installed in the analogue unit; This comparator has the ID measuring ability, and can comprise out electric replacement, 5V, VCC-5V, 3.3V positive voltage regulators (power down function when being included in short circuit) and input port, is used for the temperature of detected transmission/receiving coil.Simultaneously, digital units can comprise the SPI interface that is used for serial communication, is used to control the logic of wireless power transmission and is used for the amplifier of external system clock concussion amplifier.Simultaneously, can a plurality of input/output end ports be installed in central controller, be used for driving LED, backlight, LCD etc.
Simultaneously, Figure 18 is a circuit diagram of representing the wireless device controls module of wireless power transmission equipment according to an illustrative embodiment of the invention.At this, the components list that will be used to control wireless power transmission equipment 30 is shown individual module.That is to say; The wireless device controls module can communicate with wireless mode and wireless many electric energy transfer devices 10; And can comprise parts, what for example be used for that ID produces presets driver and FET, is used for the comparator of analog input, opens electricity replacement (reset), clock oscillation, 64 inner/outer ID and control logic as analogue unit.When detecting cell voltage through this module, the function that is full of the electricity condition value, detected phase that this wireless device controls module can have the function that is transformed into the pattern of recharging, a feedback charger IC is with the function of recognition coding etc.Except above function, the wireless device controls module can be designed as the analog input and the comparator that have the output port that is used to control outside DC/DC transducer or charger IC, be used to control rising and the reduction of electric energy, is used to set various pattern input/output end ports.
In addition, Figure 19 is a circuit diagram of representing wireless power transmission equipment according to an illustrative embodiment of the invention.At this, will be used for the components list that the electric power signal of being sent from wireless many electric energy transfer devices 10 is handled is shown individual module.
With reference to the structure of this module, the synchronous rectifier chip uses induced electromotive force to help to regulate the electric energy in the receiver module that electric energy receives battery system.Therefore, this module can comprise the synchronous rectifier that is used for producing from receiving coil dc voltage, reducing electric energy loss and heat radiation, and step-down (buck) transducer, the output that is used for controlling rectifier in advance is to provide predetermined voltage to charging circuit.This step-down (buck) transducer can with up to the speed of 2MHz by switch, thereby reduce the output ripple of rectifier, and use the microchip inductor.In addition, the output of step-down controller can be as the input of linear-charging circuit, and built-in line style charge function allows battery to use the CC/CV charging.In this case, with battery design for charging current is made as the scheduled current grade.This linear-charging function has the full state port; Can feed back the charged state of battery; And this linear-charging function can also have low pressure differential (LDO) pressurizer that is installed in wherein; This LDO pressurizer has the output voltage of 2.85V, and being used for to electric energy receiving chip (wireless device controls module) power supply, this chip being provided is the IC that is used to control external system.
In addition, this synchronous rectifier chip has and produces the low characteristic (that is, the pressure drop of 0.4V in rectifier) with low pressure drop of heat, and has the step-down controller that is installed in 2MHz wherein, is used to realize high efficiency.In addition, can the synchronous rectifier chip be maintained maximum input voltage, approximately 20V is installed in it in battery pack of Micro SMD packing forms, and optimizes in the bandwidth range of hundreds of KHz for wireless power transmission.In this case, the P passage FET (PFET) of step-down controller has low on-resistance (Rdson) value of 240m Ω and the maximum load current of 700mA, and can in PFET, settle the LDO pressurizer with 2.85V10mA.
Below, will in charging controlled step (S05), electric energy (power) control procedure be described in more detail.
That is to say that the electric power signal of being sent by the elementary charging iron core 13 of wireless many electric energy transfer devices 10 is sent out through the secondary charging iron core 32 of wireless power transmission equipment 30.In this case, device controller 390 receptions are about the information of the input voltage intensity of electric power signal.Afterwards, (for example, when 5V) being sent out with burning voltage, device controller 390 hopes the voltage of electric power signal is maintained constant voltage levvl when device controller 390 detects the electric power signal voltage that in device controller 390, is received.When the electric power signal that in device controller 390, is received too low or too high for voltage; Can with wireless power transmission equipment 30 be configured to through with the mode of load regulation to the information that wireless many electric energy transfer devices 10 send about voltage-regulation, receive constant voltage.When the voltage with electric power signal was adjusted to constant voltage, device controller 390 converted operating state into through the operation with charger IC in the charger IC piece 36 of wireless power transmission equipment 30, thus 35 chargings of control battery.
When the battery 35 of wireless power transmission equipment 30 is pressed as stated; When the electric energy that use is sent from wireless many electric energy transfer devices 10 charges; Protective circuit piece 37 is configured to the stability through inspection battery 35 in to battery 35 chargings, comes to be battery 35 constant charge.
When the wireless power transmission equipment 30 on the corresponding charger piece 14 that is placed on wireless many electric energy transfer devices 10 is moved in the charging operations process as the contactless multi-charger system (A) of wireless many electric energy transfer devices 10 and wireless power transmission equipment 30; The position of elementary charging iron core 13 and secondary charging iron core 32 also is changed, thereby makes the receiving velocity reduction that receives electric power signal from wireless power transmission equipment 30.Like this; When wireless power transmission equipment 30 to level or vertical direction during away from the center, shown in Fig. 7 and 8, then elementary charging iron core 13 moves to inappropriate position with secondary charging iron core 32; Like this, can not such as hope ground in wireless power transmission equipment 30, produce induced electromotive force.
Therefore; The electric power signal voltage that wireless power transmission equipment 30 on being placed on corresponding charger piece 14 is received is during less than reference voltage level; Send the request signal of voltage compensation to wireless many electric energy transfer devices 10 according to contactless multi-charger system of the present invention (A); Thereby compensate the loss of voltage of electric power signal, and send the bucking voltage of this electric power signal.
For example, suppose that the voltage with the electric power signal that receives is made as the reference voltage of 5V, is made as the voltage of 0.5V with reference to deviation value.In this case; When wireless power transmission equipment 30 receives the voltage less than 4.5V owing to moving of this wireless power transmission equipment 30; The voltage of the about 0.5V of secondary charging iron core 32 risings of device controller 390 controls of wireless power transmission device controller module 39, and send the voltage that is raise.Afterwards, secondary charging iron core 32 sends the request signal that boosts through signal processor block 392.
Like this, wireless many electric energy transfer devices 10 response the boosting request signal of 0.5V and send the electric power signal after boosting.That is to say, for example can change frequency of oscillation, with the electric energy transmitting that raises and exported from wireless many electric energy transfer devices 10.
As stated, regulate the electric power signal of being sent according to the variation of wireless power transmission equipment 30 positions from wireless many electric energy transfer devices 10.In Fig. 7 to 12, represented charge efficiency according to change in location.
That is to say; Fig. 7 to 10 is that expression is when the secondary reference power of hypothesis wireless power transmission equipment is set to the voltage levvl of about 2.5W; It is respectively through in the horizontal direction with vertical direction on; With wireless power transmission equipment 30 on the corresponding charger piece 14 of wireless many electric energy transfer devices move between-the 7mm-7mm measured, the diagram of the prime power (W) in wireless many electric energy transfer devices and secondary power (W) in wireless power transmission equipment and efficient (%) thereof.At this; Efficient (%) is by the efficient of the power output of wireless many electric energy transfer devices and the elementary input power percentage ((secondary power/prime power) * 100) of wireless many electric energy transfer devices are represented that this power output is applied to the primary side of wireless many electric energy transfer devices.
In addition, represented according to the present invention with the through-put power compensated regulation to be the voltage levvl of 0.5W.Below; Fig. 7 and 8 has represented the diagram of drawing for the secondary power of the 2-2.5W in wireless power transmission equipment; It has represented the frequency shift that produces in the variation of horizontal range and vertical range with respect to wireless many electric energy transfer devices 10 and wireless power transmission equipment 30 according to wireless charging apparatus 10, the charge efficiency when wireless power transmission equipment 30 does not use electric power signal to compensate to charge.That is to say; When wireless power transmission equipment 30 moves in the horizontal direction or on the vertical direction with respect to wireless many electric energy transfer devices 10; Because secondary power can scatter and disappear from the center of wireless power transmission equipment 30; Therefore the secondary power of wireless power transmission equipment 30 can reduce, and this can cause that efficient reduces.
But; For contactless multi-charger system according to the present invention (A); Shown in Fig. 9 (according to wireless power transmission equipment 30 diagram that moves in the horizontal direction) and Figure 10 (according to wireless power transmission equipment 30 diagram that moves in vertical direction); With Fig. 7 and 8 opposite,, send about receiving the information of electric energy change in voltage from wireless power transmission equipment when wireless power transmission equipment 30 during in the top, horizontal of the charger piece 14 of wireless many electric energy transfer devices 10 and vertical moving.Like this, wireless many electric energy transfer device 10 comes power controlling through frequency change, thereby shows its efficient.Electric energy transmitting has stably been carried out in this expression in wireless power transmission equipment 30, so this explanation, and the efficient of electric energy transmitting is than higher.
In addition, Figure 11 representes to illustrate according to wireless power transmission equipment 30 efficient of drawing that moves in the horizontal direction, and Figure 12 representes to illustrate according to wireless power transmission equipment 30 efficient of drawing that moves in vertical direction.At this, it has represented, power back-off (above rectangle point diagram, power control) is better than the efficient of not carrying out power back-off (following curve chart, constant power) along with variable power when carrying out along with frequency change.
Like this, can stably send power supply with wireless mode through the wireless power transmission of the contactless multi-charger system (A) that between wireless many electric energy transfer devices 10 and wireless power transmission equipment 30, carries out.Like this, can in contactless multi-charger system (A), stably use wireless many electric energy transfer devices 10 and wireless power transmission equipment 30.
Particularly; According to the present invention; When in wireless many electric energy transfer devices 10, providing in the situation of structure with a plurality of charger pieces 14, can be in the charging controlled step (S05) of carrying out above-mentioned wireless power transmission, the charging method that is used for power back-off is as better charging method.
That is to say,, under the situation of the structure that disposes a plurality of charger pieces 14 on the wireless charger platform 12, can on wireless charger platform 12, place various wireless power transmission equipment 30 when as shown in Figure 1, and to its charging.
In this case, portable mobile wireless electric energy transmission equipment, for example mobile phone, PDA, PMP, DMB terminal, MP3 or notebook computer can be used as wireless power transmission equipment 30.When on a wireless power transmission equipment just is being placed on the charger piece 14 of a side of wireless charger platform 12, charging, can on the charger piece 14 of the opposite side of wireless charger platform 12, place another wireless power transmission equipment, and to its charging.
And; When having touched, the user begins the wireless power transmission equipment that charges; Or when having shaken wireless many electric energy transfer device 10, may cause the elementary charging iron core of corresponding charger piece 14 and the position change of the secondary charging iron core of the wireless power transmission equipment that is charging unfavourably.Owing to there is above-mentioned charge power compensation, therefore the wireless power transmission equipment that is therefore charging can continue the relevant device charging, and can not cause any burden still with stable voltage charging, gets into complete full state up to this equipment.
For contactless multi-charger system according to the present invention (A), on each of each charger piece 14 to the wireless power transmission equipment charge.In this case, not only small-sized mobile phone can charge on each charger piece 14, and then still can on each charger piece 14, charge with the large-scale wireless power transmission equipment that wireless mode charges.
Therefore; The secondary charging iron core of corresponding wireless power transmission equipment may be recharged in the position corresponding to the elementary charging iron core of a charger piece;, and be placed on other charger pieces then because the large scale of this wireless power transmission equipment away from other parts of this wireless power transmission equipment of secondary charging iron core.In this case, other charger pieces are transformed into the foreign matter error pattern, stop electric energy transmitting, can prevent that like this other parts of wireless power transmission equipment from causing damage.
Simultaneously, because for example the metal wire of wireless power transmission equipment also might cause the wireless charging operation, the charger piece of therefore placing these parts also is transformed into the foreign matter mistake, to stop electric energy transmitting.Therefore; Owing to have only the charger piece of the secondary charging iron core of having placed large-scale wireless power transmission equipment just can carry out its wireless charging operation, so wireless power transmission equipment and wireless many electric energy transfer devices can stably carry out its charging operations according to electric energy transmitting.
In addition; Wireless power transmission equipment 30 according to the present invention comprises shield member; Be used to prevent that wireless power transmission equipment 30 and battery 35 from receiving the influence in the magnetic field that the secondary charging iron core 32 by the elementary charging iron core 13 of wireless many electric energy transfer devices 10 and wireless power transmission equipment 30 produced, shown in Figure 15 to 19.
At first, Figure 13 is the exploded view of structure that expression has the wireless power transmission equipment 30 of radio energy receiver module.At this; Battery pack is made up of coil, simple metal, thin aluminium lamination (aluminium foil etc.), lithium ion or lighium polymer; It is to not influence of single battery; This is that to intercept magnetic field fully, this makes that battery can be at 500 or more battery circulation carrying out charge/discharge owing to added thin aluminium lamination in the battery pack.Here, the shape of secondary charging iron core comprises the coil of all kinds.That is to say that the shape of coil can comprise rectangle, annular or oval, and can have various coils for example winding around, solenoid etc. in it.In this case; Radio transmission apparatus 30 with radio energy receiver module comprises radio energy acceptor circuit 40; This circuit 40 comprises the parts of electric energy receiver controller for example 39 and charger IC piece 36; These two parts all are positioned at the same side of rechargeable battery, and this radio energy acceptor circuit 40 can comprise the shield member 41 in the magnetic field around being used to prevent.
In addition; Wireless power transmission equipment 30 also have be positioned at rechargeable battery 35 bottoms, front, at the back, the barricade 42,43,44,45 and 46 on left side and right side, be used for protecting battery 35 not receive the influence in the magnetic field of elementary iron core piece and secondary iron core piece 32 through armoured magnetic field.
Then; Because five zones; For example the front of battery 35, at the back, left side, right side and bottom all have barricade 42,43,44,45 and 46 respectively and intercept the magnetic field that is produced by elementary iron core piece and secondary iron core piece 32, therefore can prevent that battery 35 from receiving the damage in magnetic field.Therefore, in the time of needs, can extra barricade also be provided at the upper surface of battery 35.In this case, preferred temperature can be owing to complete closed around the battery 35 raises.
As stated, barricade 42,43,44,45 and 46 and shield member 41 can process by the thin slice that comprises Al, Cu, Ni alloy.
In addition; Between barricade 46 and charger receiver module 321, has magnetic sheet 48; Be used to be convenient to the induction from the magnetic field of secondary charging iron core 32 inductions, this barricade 46 is formed on the bottom of battery 35, and this charger receiver module 321 comprises secondary charging iron core 32.50 weight portions), Ni-Fe (80 weight portions: 20 weight portions), simple metal (Fe-Si-Cu-Nb) etc. magnetic sheet 48 comprises amorphous iron oxysome (ferrite), Mn-Zn (50 weight portions:.
This magnetic sheet 48 can comprise upper strata magnetic sheet 481 and lower floor's magnetic sheet 252, and this upper strata magnetic sheet is between barricade 46 and charging receiver module 321, and this lower floor's magnetic sheet is positioned at the bottom of charger receiver module 321.Like this, lower floor's magnetic sheet 482 can have the through hole of lower panel, and this through hole is the through hole that passes lower floor's magnetic sheet 482 central authorities.The shape of the lower plywood through hole 483 preferably coil shape with secondary iron core piece 32 is identical.For example, Figure 15 representes that the lower plywood through hole 483 of lower floor's magnetic sheet 482 forms circle, and this is because secondary iron core piece 32 forms circular iron core.But when iron core formed rectangle or polygon, lower floor's through hole 483 preferably formed identical shape.Therefore, owing to the existence of lower plywood through hole 483 is easy in secondary iron core piece 32, produce induced electromotive force, secondary iron core piece 32 is positioned at induced field, and this signal can send/receive with any mode easily.
Simultaneously, division board 47 is provided for this magnetic sheet 48, it is used to isolate battery 35 between barricade 46 and battery 35, and this barricade 46 is positioned at the bottom of battery 35.Because division board 47 is to form with the mesh of being made by Ni-Cu (mesh) or the form of film, so the heat of barricade 46 can not be delivered to battery 35.
Another example as magnetic field shielding part; Magnetropism plate 48 provides the magnetic sheet 48 that is formed between aluminum cell shell 35 ' and the secondary iron core piece 32 (elementary HPES: (HanrimPostech) electromagnetic shielding of Han Lin Pu item industry); Shown in figure 16, aluminum cell shell 35 ' has been formed the external shell of battery 35.In this case, shielding mesh parts 49 also are provided, as secondary HPES between magnetic sheet 48 (that is, elementary HPES) and battery case 35 '.This can have the composition identical with above-mentioned shield member as the magnetic sheet 48 of elementary HPES with shielding mesh parts 49 as secondary HPES.
Known most of magnetic field all is to be shielded by the magnetic sheet 48 as elementary HPES.Shown in figure 16, represented because the magnetic line of force is partial to through the magnetic sheet 48 for barricade, so this magnetic line of force can not influence battery.Like this, at the peak region generation heat of the magnetic line of force, and shed by metal magnetic plate 48 afterwards.In addition; 50 weight portions), Ni-Fe (80 weight portions: 20 weight portions) or simple metal (Fe-Si-Cu-Nb) shield member 49 as secondary HPES forms on the metal mesh opening by coating agent is coated in, and this coating agent can be selected from comprise following group: amorphous iron oxysome, Mn-Zn (50 weight portions:.Like this, secondary HPES is used to mask the magnetic field that the magnetic sheet 48 as elementary HPES does not mask.In the metal mesh opening as the shielding mesh parts 49 of secondary HPES, the too much magnetic line of force can form eddy current.In this case, because the existence of the eddy current that forms in the metal mesh opening, so battery can receive the influence in the magnetic field that is produced by elementary iron core piece and secondary iron core piece.In this test, show to have masked about 90% magnetic field by magnetic sheet 48 as elementary HPES, masked about 10% magnetic field by shielding mesh parts 49 as secondary HPES.
Use comprises the charging test (500 circulations) that comes recharge efficient as the magnetic sheet of elementary HPES 48 and the wireless power transmission equipment 30 as the shielding mesh parts 49 of secondary HPES.At this, battery is not connected to charging device, but battery is connected to charging device through electric wire with wireless mode, to carry out the charge/discharge test, shown in figure 17.Thus, Figure 17 has represented to use 80% efficiency curve curve (hereinafter, being called " standard performance line segment " (D)) as a reference, and this efficiency curve of 80% is to obtain for 500 times through the charge/discharge that repeats battery, and is called constant charge efficient.At first; When wireless power transmission equipment 30 charges through electric contact usually; And when not being exposed in the magnetic field (in Figure 17 by " N " expression), carry out the experiment of this wireless power transmission equipment, like this; Can in the standard performance line segment, draw charging capacity, this charge that can be illustrated in the battery pack is stable.
Therefore; For wireless power transmission equipment 30 according to the present invention; Having shown magnetic sheet 48 with elementary HPES and be stable as the charge of the shielding mesh parts 49 of secondary HPES (in Figure 17 by curve " A " expression) on the basis of 500 times charge/discharges tests, is 83.9%.
But when in wireless power transmission equipment 30, not using secondary HPES, on the basis of 460 times charge/discharge tests, the charge of expressing (in Figure 17, being represented by curve " B ") is lower, is 75.3%.When in wireless power transmission equipment 30, not using elementary HPES and secondary HPES; The charge of on the basis of 340 times charge/discharges, expressing (in Figure 17, being represented by curve " C ") is very low; They be 74.5%, and 340 times charge/discharge is well below 500 times.But this shows that wireless power transmission equipment 30 according to the present invention has shown extraordinary charge.
In this description of carrying out only is the exemplary embodiment for illustration purpose; Rather than be used to limit scope of the present invention, therefore, those skilled in the art are to be understood that; Can carry out other equivalents and modification to it, and without departing from the spirit and scope of the present invention.Therefore, should be appreciated that the present invention can not be limited the scope that specification is described in detail, but confirm by the scope of claim and equivalents thereof.

Claims (11)

1. a contactless multi-charger system (A), this system comprises wireless many electric energy transfer devices (10), is used for sending electric power signal to wireless power transmission equipment (30) with wireless mode,
Wherein said wireless many electric energy transfer devices (10) comprise wireless charger shell (11); This shell (11) forms external shell; This wireless charger shell (11) comprises full-bridge resonance converter (22) and the central controller (21) that is installed in wherein, is used for sending electric power signal with wireless mode to said wireless power transmission equipment (30);
Wherein said wireless charger shell (11) has the wireless charger platform (12) that is formed on its upper surface;
Wherein said wireless charger platform (12) has a plurality of charger pieces (14), and each charger piece (14) all comprises elementary charging iron core (13);
Wherein said full-bridge resonance converter (22) exists with a plurality of forms, and is connected to said a plurality of charger pieces (14) respectively;
Wherein be provided with multi-door Drive Module (23), be used under the control of central controller (21), each in a plurality of said full-bridge resonance converters (22) is sent the electric power signal after the conversion, and
Wherein be provided with and receive signal processor module (24); This reception signal processor module (24) is connected to said a plurality of charger pieces (14); Be used for the signal that sends from said wireless power transmission equipment (30) is handled, and the signal after will handling offers said central controller (21).
2. contactless multi-charger system according to claim 1, wherein said wireless charger shell (11) has: be formed on its anterior electric power on/off (151); TIP (152) is used for input signal; And LCD panel (153) and rechargeable LED (154); Be used to show the charged state of said wireless charger platform (12), a plurality of charger piece (14) and wireless power transmission equipment (30), said wireless charger shell (11) also comprises the power supply unit (25) that is formed on wherein.
3. contactless multi-charger system according to claim 1, wherein said central controller (21) comprising:
Be connected to the power supply piece (211) of said power supply unit (25), be used for power supply being provided to said wireless many electric energy transfer devices (10);
Signal IOB (212) is used for to said LCD panel (153) and rechargeable LED (154) output shows signal;
Be connected to the door output signal processor piece (213) of said multi-door Drive Module (23), be used for sending the electric power signal of sending from said elementary charging iron core (13);
Be connected to the received signal processor piece (214) of a side of said elementary charging iron core (13); Be used for the signal that sends from said reception signal processor module (24) is handled, this reception signal processor module (24) is used for the signal that sends from said wireless power transmission equipment (30) is handled; And
Master controller (210) is used to control said power supply piece (211), signal IOB (212), door output signal processor piece (213) and received signal processor piece (214).
4. according to each described contactless multi-charger system in the claim 1 to 3, wherein said central controller (21) control is to the request of the data message of the charging capacity of wireless power transmission equipment (30); Reception is from the information data of the charging capacity of wireless power transmission equipment (30) transmission and the data of electric power signal voltage, with the voltage data of definite electric power signal of being sent; Frequency to said electric power signal is carried out the algorithm computing, compensates the electric energy that is sent with the voltage data with respect to the electric power signal of determined wireless power transmission equipment (30); And control electric power signal transmit with compensating frequency, thereby with the compensation electric power signal be sent to wireless power transmission equipment (30).
5. according to the contactless multi-charger system of claim 1, wherein said wireless power transmission equipment (30) comprising:
Secondary charging iron core (32) is used to send the induced current that produces from magnetic field, with the elementary charging iron core (13) corresponding to said wireless many electric energy transfer devices (10);
Be connected to the rectifier block (33) of said secondary charging iron core (32), be used for said induced current is carried out rectification;
Be connected to the smoothing filter piece (34) of said rectifier block (33), be used for electric current is carried out filtering;
Be connected to the charger IC piece (36) of said smoothing filter piece (34), be used for power source charges to battery (35);
Protective circuit piece (37), this protective circuit piece (37) is positioned between said charger IC piece (36) and the battery (35), is used for detecting the electric current that charges into said battery (35), and sends the information of the charged state of said battery (35) to electric energy receiver controller (39);
Positive voltage regulators piece (38) is used for to electric energy receiver controller (39) power supply being provided; And
Electric energy receiver controller (39) is used to control said rectifier block (33), smoothing filter piece (34), charger IC piece (36), protective circuit piece (37) and positive voltage regulators piece (38).
6. contactless multi-charger system according to claim 5, wherein said electric energy receiver controller (39) comprising:
Be connected to the electric power signal processor piece (393) of said smoothing filter piece (34), be used for handling data information transmission signal from the electric power signal of wireless power transmission equipment (30) reception;
Be connected to the charging signals processor piece (394) of said charger IC piece (36) and protective circuit piece (37), be used for handling the data information transmission signal that receives from wireless power transmission equipment (30) about the charging capacity and the charged state of said battery (35);
Signal processor block (392) is used under the control of device controller (390), handles to be sent to the charging capacity information of said wireless many electric energy transfer devices (10) and the data message of intrinsic ID;
Device storage unit (391); Be used to store the data message of said intrinsic ID; Interim storage is from said protective circuit piece (37) and the charging capacity of charger IC piece (36) transmission and the data message of charged state, and storage is from the data of said wireless many electric energy transfer devices (10) transmission; And
Device controller (390).
7. contactless multi-charger system according to claim 6; The master controller (210) of wherein said wireless many electric energy transfer devices (10) is except that the rechargeable electrical energy signal that is controlled to the charger piece (14) that is charging; Also control the transmission of the own code signal of each charger piece (14)
Wherein said device controller (390) is analyzed from the own code signal of the corresponding charger piece (14) of said wireless many electric energy transfer devices (10) transmission, and
Wherein said device storage unit (391) storage is from the data value of the own code signal of the corresponding charger piece (14) of said device controller (390) transmission.
8. contactless multi-charger system according to claim 6; Wherein said device controller (390) control data value is to the transmission of said wireless many electric energy transfer devices (10); This data value comprises the magnitude of voltage of the electric power signal that is received, and this data value is directed to the request signal that receives from said wireless many electric energy transfer devices (10).
9. one kind is used for controlling the method like any described contactless multi-charger system of claim 1 to 4 (A), and this method comprises:
1) in each cycle; Through wireless many electric energy transfer devices (10) the transmission electric power signal of elementary charging iron core (13) from contactless multi-charger system (A); And wait for that the reception (S01) of the response signal of this electric power signal, said electric power signal comprise the request signal of the intrinsic ID value that is used to ask wireless power transmission equipment (30);
2) through checking, determine whether to exist object, and confirm whether detected detection signal is normal signal (S02) according to the detected detection signal of load regulation in the elementary charging iron core (13) of a charger piece (14);
3) if detected detection signal is a normal signal, then through analyzing the intrinsic ID signal (S03) that detected reception signal from said wireless power transmission equipment (30) has determined whether to receive said wireless power transmission equipment (30);
4) when the intrinsic ID signal of confirming to receive be during from intrinsic ID that said wireless power transmission equipment (30) sends, send full charging electric energy transmitting (S04) through multi-door Drive Module (23) from the elementary charging iron core (13) of corresponding charger piece (14);
5) regulate charged level (S05) to the information of said wireless power transmission equipment (30) request charged state, and according to the charge information of said wireless power transmission equipment (30);
6) when the information that receives from said wireless power transmission equipment (30) about complete full state, go up the complete full state that shows corresponding to corresponding charger piece (14) at LCD panel (153) or rechargeable LED (154), and stop charging operations (S06).
10. the method that is used to control contactless multi-charger system (A) according to claim 9; Object detection step 2 wherein) comprising: when according to the load regulation that produces by object; When being not normal signal through corresponding elementary charging iron core (13) and the detected detection signal of reception signal processor module (24); A plurality of charger pieces (14) are transformed into the foreign matter detecting pattern; When the foreign matter that is detected is metal or electronic equipment, goes up demonstration foreign matter mistake at LCD panel (153) or rechargeable LED (154), and stop the charging operations (S021) on the corresponding charger piece (14).
11. the method that is used to control contactless multi-charger system (A) according to claim 9, the controlled step 5 of wherein charging) comprising:
Data message to said wireless power transmission equipment (30) request charging capacity;
Reception is from the data message of the said charging capacity of wireless power transmission equipment (30) transmission and the voltage data of electric power signal;
Confirm from the voltage data of the electric power signal of wireless power transmission equipment (30) transmission;
Frequency to electric power signal is carried out the algorithm computing, compensates the electric energy that is sent with the voltage data to the electric power signal of sending from said wireless power transmission equipment (30);
Send electric power signal with compensating frequency, to send the compensation electric power signal to said wireless power transmission equipment (30).
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KR1020070123751A KR100998683B1 (en) 2007-11-30 2007-11-30 Non-contact power receiving device for multiple wireless charging
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