CN104113144A - Wireless power feeder supporting multiple loads and power supply method of the wireless power feeder - Google Patents

Wireless power feeder supporting multiple loads and power supply method of the wireless power feeder Download PDF

Info

Publication number
CN104113144A
CN104113144A CN201410296287.7A CN201410296287A CN104113144A CN 104113144 A CN104113144 A CN 104113144A CN 201410296287 A CN201410296287 A CN 201410296287A CN 104113144 A CN104113144 A CN 104113144A
Authority
CN
China
Prior art keywords
circuit
coil
load
described
transmitting
Prior art date
Application number
CN201410296287.7A
Other languages
Chinese (zh)
Other versions
CN104113144B (en
Inventor
李聃
孙伟
龙海岸
Original Assignee
青岛众海汇智能源科技有限责任公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 青岛众海汇智能源科技有限责任公司 filed Critical 青岛众海汇智能源科技有限责任公司
Priority to CN201410296287.7A priority Critical patent/CN104113144B/en
Publication of CN104113144A publication Critical patent/CN104113144A/en
Application granted granted Critical
Publication of CN104113144B publication Critical patent/CN104113144B/en

Links

Abstract

The invention discloses a wireless power feeder supporting multiple loads and a power supply method of the wireless power feeder. The wireless power feeder supporting multiple loads includes a plurality of transmitting terminals with freely-positioned loads, each transmitting terminal includes a transmitting circuit and a plurality of sets of transmitting coils, the transmitting circuit includes a plurality of inverter circuits, each inverter circuit corresponds to a receiving terminal load, and each set of transmitting coils share a resonant capacitor in the transmitting circuit. In the wireless power feeder in the invention, each load can independently communicate and closed-loop control of dynamic stable load voltage can be performed, idle inverter circuits with no loads are adopted to perform polling scanning, and an inverter circuit specially for load detection can be saved, thereby reducing cost; and the scheme that a plurality of transmitting coils share a resonant capacitor is used, and a resonant unit can be optimized, thereby reducing the number of resonant capacitors, reducing production cost, and reducing occupied space of components.

Description

Support wireless feeder equipment and the method for supplying power to thereof of multi-load

Technical field

The present invention relates to wireless power transmission technology, relate in particular to a kind of wireless feeder equipment and method of supplying power to thereof of supporting multi-load.

Background technology

Wireless power transmission technology is applied in daily life more and more widely, such as wireless charging mobile phone, wireless charging automobile, anury household electrical appliances etc.Having in daily life multiple power consumption equipments can need to charge simultaneously, and therefore single man-to-man wireless power transmission can not meet user demand.

But, at present on wireless power transmission product, if while having multiple reception load, just there are multiple transmitting terminals, or form resonant element by emission inductance and electric capacity controller control is multiple, as shown in Figure 1, a corresponding receiving terminal 2 of transmitting terminal 1, realizes single man-to-man wireless power transmission.As shown in Figure 2, each transmitting coil 13 in each transmitting terminal 1 need be connected with expensive resonant capacitance 14.But in real work, only have near a few transmitting coil 13 reception load to carry out wireless power transmission, most of transmitting coil 13 is in idle state.Transmitting terminal takes up room large and increases corresponding cost like this, relatively waste in resource, and user uses also inconvenient.

Summary of the invention

In view of this, the technical problem to be solved in the present invention is to provide a kind of wireless feeder equipment and method of supplying power to thereof of supporting multi-load, to reduce the quantity of resonant capacitance, reduces production costs.

For solving the problems of the technologies described above, technical scheme of the present invention is achieved in that

A wireless feeder equipment of supporting multi-load, comprises the transmitting terminal that multiple loads are freely located, and described transmitting terminal comprises radiating circuit and many group transmitting coils, and described in every group, transmitting coil shares a resonant capacitance in described radiating circuit.

As preferred version, described radiating circuit comprises control circuit, selects circuit, multiple inverter circuit, multiple testing circuit and multiple compensating circuit, described control circuit is connected with described inverter circuit, testing circuit and selection circuit respectively, described compensating circuit is connected with described inverter circuit, testing circuit, selection circuit respectively, and described selection circuit connects the described transmitting coil of many groups; And multiple described inverter circuits are supported multiple load receiving terminals.

As preferred version, each described compensating circuit comprises a resonant capacitance.

As preferred version, organize described transmitting coil is array arrangement more.

As preferred version, described transmitting coil is single or multiple lift array arrangement.

Another kind of technical scheme provided by the invention: the method for supplying power to of the wireless feeder equipment of multi-load is supported in a kind of application, and it comprises:

A, in the time having object in coil array, the inverter circuit that one of system drive does not have a loaded free time carries out poll scanning according to predetermined coil scanning route;

B, judge that whether voltage on coil or electric current exceed the numerical value when non-loaded, if it is perform step C, otherwise continue execution step A;

C, judge whether load is legal load, if it is performs step D, otherwise close this coil and continue execution step A;

The number of D, selection actuating coil, carries out delivery of electrical energy;

E, judge on this coil that system receives, whether signal strength signal intensity size reaches predetermined range, and if it is coil quits work, otherwise the running parameter of adjustment System perform step D.

As preferred version, idle each described inverter circuit can poll scanning coil under the control of system or is carried out Energy Transfer.

As preferred version, in steps A, the coil of inverter circuit poll scanning is whole coils or coil sections.

As preferred version, in step C, scan and judge whether load is legal load by ID.

As preferred version, in execution step when C, ID and signal strength signal intensity that system can periodic magnetic test coil, then perform step D.

Wireless feeder equipment and the method for supplying power to thereof of support multi-load provided by the invention, tool has the following advantages:

In wireless feeder equipment of the present invention, each load can independent communication and is carried out the dynamic steady load voltage of closed-loop control, and employing does not have the inverter circuit of load free time to carry out poll scanning, can save one group of inverter circuit that carries out specially load detecting, reduce costs, and by the multiple transmitting coil power supplies of multiple inverter circuit control, can realize the wireless transmission of multiple loads.Adopt multiple transmitting coils to share the scheme of a resonant capacitance, can be optimized resonant element, thereby the quantity of minimizing resonant capacitance reduces production costs, and reduces taking up room of components and parts.Its transmitting coil adopts single or multiple lift array arrangement, can make wireless charging area distribute without dead band, thereby this wireless feeder equipment is fully utilized.Simultaneously can support multiple loads, and each load is not subject to position limitation, can freely locates.

Brief description of the drawings

Fig. 1 is existing wireless transmitting and receiving device schematic diagram;

Fig. 2 is the structural representation of the another kind of transmitting terminal of prior art;

Fig. 3 is the structural representation that the present invention supports the wireless feeder equipment of multi-load;

Fig. 4 is the distribution map of transmitting coil in the present invention;

Fig. 5 is another distribution map of transmitting coil in the present invention;

Fig. 6 is the another distribution map of transmitting coil in the present invention;

Fig. 7 is the flow chart of method of supplying power to of the present invention.

[critical piece symbol description]

1 transmitting terminal

2 receiving terminals

11 adaptor modules

12 radiating circuits

121 control circuits

122 inverter circuits

123 testing circuits

124 compensating circuits

125 select circuit

13 transmitting coils

14 resonant capacitances.

Embodiment

Below in conjunction with accompanying drawing and embodiments of the invention, wireless feeder equipment of the present invention and method of supplying power to thereof are described in further detail.

As shown in Figure 3, the present invention supports the wireless feeder equipment of multi-load and power supply to be electrically connected, and the wireless feeder equipment of described support multi-load comprises the transmitting terminal 1 that multiple loads are freely located.Transmitting terminal 1 comprises and connects power interface, the radiating circuit 12 of power supply and organize transmitting coil 13 more, and radiating circuit 12 is electrically connected with described power interface, transmitting coil 13 respectively, and every group of resonant capacitance that transmitting coil 13 shares in radiating circuit 12.Wherein, every group of transmitting coil includes multiple transmitting coils, and multiple transmitting coils share a resonant capacitance.In addition described power interface Payload attach fitting module 11.

Radiating circuit 12 comprises control circuit 121, selects circuit 125, multiple inverter circuit 122, multiple testing circuit 123 and multiple compensating circuit 124.Described inverter circuit 122 is connected with described power interface, control circuit 121, testing circuit 123, compensating circuit 124 respectively.Described control circuit 121 drives bus driver inverter circuit 122 to carry out poll scanning to transmitting coil 13 by inversion.Described testing circuit 123 is electrically connected control circuit 121, and control circuit 121, by detection signal bus input detection signal, is controlled testing circuit 123 and detected voltage or the size of current on transmitting coil 13.Control circuit 121 is electrically connected with selecting circuit 125 by I/O expansion interface, select circuit 125 to be connected with each group of transmitting coil 13, control circuit 121 is selected the switching of the switch in circuit 125 by the total line traffic control of switch drive, thereby determine that certain compensating circuit 124 forms loop with transmitting coil 13, and system can adjust the parameter of the resonant capacitance in described compensating circuit 124 according to the number that forms the transmitting coil 13 in loop with described compensating circuit 124, thereby be applicable to the transmission of radio energy.In the present embodiment, described control circuit 121 can adopt MCU control circuit.

Basic " one-to-many " radio energy transmission system, adopt the compensating circuit 124 of series resonance, and each compensating circuit 124 comprises a resonant capacitance, described compensating circuit 124 is by selecting circuit 125 to be connected with transmitting coil 13, multiple transmitting coils 13 share a resonant capacitance, support the structure of the wireless feeder equipment of multi-load thereby can simplify the present invention, and reduced production cost.

In addition, as shown in Fig. 4 ~ Fig. 6, described transmitting coil 13 can be monolayer alignment, also can arrange for multiple tier array, supports multiple load supplyings and each load not to be subject to the restriction of position, can freely locate.Certainly, the transmitting coil that multiple tier array is arranged can make wireless charging area distribute without dead band, can make full use of wireless feeder equipment of the present invention.

As shown in Figure 7, the present invention applies and supports the method for supplying power to of wireless feeder equipment of multi-load to comprise the following steps:

Step 140, system initialization.

Step 141, in the time having object in receiving coil array, the inverter circuit that one of system drive does not have a loaded free time carries out poll scanning according to predetermined coil scanning route.

Wherein, inverter circuit, to whole coils or the scanning of coil sections poll, can pass through the multiple transmitting coils of minority inverter circuit control.

Step 142, judge that whether voltage on coil or electric current exceed the numerical value when non-loaded, if it is perform step 143, otherwise continue execution step 141.

Step 143, determine whether legal load, if so, perform step 144, if not, close coil and continue execution step 141.

Here, scan and judge whether load is legal load by ID.

The number of step 144, selection actuating coil, carries out delivery of electrical energy.

Step 145, judge system receive this coil on signal strength signal intensity size whether reach predetermined range, if so, perform step 143, if not, the running parameter of adjustment System, then jump procedure 144.

Wherein, described running parameter comprises operating frequency or the phase place etc. of inverter circuit.

Step 145, system receive ceases and desist order, and coil working finishes.

Wherein, in wireless power transmission process, reusable inverter circuit, be that idle inverter circuit of system drive carries out poll scanning, in the time judging that load is legal and make, this inverter circuit also can carry out the transmission work of energy, can save one group of inverter circuit that carries out specially load detecting, reduces costs.

In addition,, execution step 143 o'clock, ID and signal strength signal intensity that system can periodic magnetic test coil, then perform step 144.

As shown in Figure 7, in the time having object near receiving coil array, also can start another inverter circuit and skip to next coil and repeat operating procedure above, and by that analogy, realize the wireless power transmission of load.

In embodiment as shown in Figure 7, only taking 2 inverter circuit control flows as example, realize the wireless power transmission of 2 loads, and can control respectively the watt level of output electric energy by feedback loop separately, make each load can independent communication and carry out the dynamic burning voltage of closed-loop control.But in practical application, be not limited to 2 inverter circuits, can set according to actual needs the number of inverter circuit, if there be n load need to carry out delivery of electrical energy, can set n inverter circuit and carry out delivery of electrical energy, n inverter circuit supported n receiving terminal.Because the control of principle and 2 inverter circuits is similar, therefore repeat no more.

The above, be only preferred embodiment of the present invention, is not intended to limit protection scope of the present invention.

Claims (10)

1. support the wireless feeder equipment of multi-load for one kind, it is characterized in that, comprise the transmitting terminal that multiple loads are freely located, described transmitting terminal comprises radiating circuit and many group transmitting coils, and described in every group, transmitting coil shares a resonant capacitance in described radiating circuit.
2. the wireless feeder equipment of support multi-load according to claim 1, it is characterized in that, described radiating circuit comprises control circuit, selects circuit, multiple inverter circuit, multiple testing circuit and multiple compensating circuit, described control circuit is connected with described inverter circuit, testing circuit and selection circuit respectively, described compensating circuit is connected with described inverter circuit, testing circuit, selection circuit respectively, and described selection circuit connects the described transmitting coil of many groups; And multiple described inverter circuits are supported multiple load receiving terminals.
3. the wireless feeder equipment of support multi-load according to claim 2, is characterized in that, each described compensating circuit comprises a resonant capacitance.
4. the wireless feeder equipment of support multi-load according to claim 1, is characterized in that, organize described transmitting coil is array arrangement more.
5. the wireless feeder equipment of support multi-load according to claim 4, is characterized in that, described transmitting coil is single or multiple lift array arrangement.
6. a method of supplying power to of supporting the wireless feeder equipment of multi-load, is characterized in that, it comprises:
A, in the time having object in coil array, the inverter circuit that one of system drive does not have a loaded free time carries out poll scanning according to predetermined coil scanning route;
B, judge that whether voltage on coil or electric current exceed the numerical value when non-loaded, if it is perform step C, otherwise continue execution step A;
C, judge whether load is legal load, if it is performs step D, otherwise close this coil and continue execution step A;
The number of D, selection actuating coil, carries out delivery of electrical energy;
E, judge on this coil that system receives, whether signal strength signal intensity size reaches predetermined range, and if it is coil quits work, otherwise the running parameter of adjustment System perform step D.
7. method of supplying power to according to claim 6, is characterized in that, idle each described inverter circuit can poll scanning coil under the control of system or carried out Energy Transfer.
8. method of supplying power to according to claim 6, is characterized in that, in steps A, the coil of inverter circuit poll scanning is whole coils or coil sections.
9. method of supplying power to according to claim 6, is characterized in that, in step C, is scanned and is judged whether load is legal load by ID.
10. method of supplying power to according to claim 6, is characterized in that, in execution step when C, ID and signal strength signal intensity that system can periodic magnetic test coil, then perform step D.
CN201410296287.7A 2014-06-27 2014-06-27 Support the wireless feeder equipment and its method of supplying power to of multi-load CN104113144B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410296287.7A CN104113144B (en) 2014-06-27 2014-06-27 Support the wireless feeder equipment and its method of supplying power to of multi-load

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410296287.7A CN104113144B (en) 2014-06-27 2014-06-27 Support the wireless feeder equipment and its method of supplying power to of multi-load

Publications (2)

Publication Number Publication Date
CN104113144A true CN104113144A (en) 2014-10-22
CN104113144B CN104113144B (en) 2017-12-05

Family

ID=51709824

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410296287.7A CN104113144B (en) 2014-06-27 2014-06-27 Support the wireless feeder equipment and its method of supplying power to of multi-load

Country Status (1)

Country Link
CN (1) CN104113144B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105978075A (en) * 2016-06-06 2016-09-28 薛寿贞 Wireless charger
CN106385086A (en) * 2016-11-22 2017-02-08 北京信息科技大学 Wireless charging device based on triangular grid magnetic induction waveguide
WO2019045769A1 (en) * 2017-08-29 2019-03-07 Apple Inc. Wireless power system with resonant circuit tuning

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1835338A (en) * 2006-03-03 2006-09-20 重庆大学 Power source board able to be controlled in zone
WO2010118191A1 (en) * 2009-04-08 2010-10-14 Access Business Group International Llc Selectable coil array
CN103092330A (en) * 2011-10-27 2013-05-08 宏碁股份有限公司 Electronic device and voice recognition method thereof
EP2648315A1 (en) * 2011-03-11 2013-10-09 Haier Group Corporation Wireless power supply device and method
CN103595109A (en) * 2013-12-03 2014-02-19 东南大学 Mobile charging method and device for electric vehicle

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1835338A (en) * 2006-03-03 2006-09-20 重庆大学 Power source board able to be controlled in zone
WO2010118191A1 (en) * 2009-04-08 2010-10-14 Access Business Group International Llc Selectable coil array
EP2648315A1 (en) * 2011-03-11 2013-10-09 Haier Group Corporation Wireless power supply device and method
CN103092330A (en) * 2011-10-27 2013-05-08 宏碁股份有限公司 Electronic device and voice recognition method thereof
CN103595109A (en) * 2013-12-03 2014-02-19 东南大学 Mobile charging method and device for electric vehicle

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105978075A (en) * 2016-06-06 2016-09-28 薛寿贞 Wireless charger
CN106385086A (en) * 2016-11-22 2017-02-08 北京信息科技大学 Wireless charging device based on triangular grid magnetic induction waveguide
CN106385086B (en) * 2016-11-22 2019-02-19 北京信息科技大学 A kind of wireless charging device of triangle grid magnetic induction waveguide
WO2019045769A1 (en) * 2017-08-29 2019-03-07 Apple Inc. Wireless power system with resonant circuit tuning

Also Published As

Publication number Publication date
CN104113144B (en) 2017-12-05

Similar Documents

Publication Publication Date Title
US9711974B2 (en) Wireless power transmitting apparatus and method thereof
US20180019617A1 (en) Wireless power transmission apparatus
US10355534B2 (en) Integrated circuit for managing wireless power transmitting devices
CN102957193B (en) A kind of charging management method, device and system
CN102983636B (en) Apparatus for wireless power transmission using multi antenna and method for controlling the same
US9843219B2 (en) Wireless power transmitters with wide input voltage range and methods of their operation
CN103023320B (en) High-efficiency bidirectional direct current converter and control method thereof
CN102712262B (en) Charging system for electric vehicles
CN101944780B (en) Contactless power receiving apparatus, power receiving method for contactless power receiving apparatus and contactless power supplying system
CN104283444B (en) Rear adjusting flyback converter with variable output stage
JP5698626B2 (en) Wireless power receiving device, wireless power feeding device, and wireless power feeding system
US20170063168A1 (en) Wireless power transfer control method and wireless power transfer system
US20150115878A1 (en) Wireless charging device and control method thereof
JP5426570B2 (en) Inductive power transfer circuit
CN102082451B (en) Electronic device and integrated circuit adopted therein
KR101968554B1 (en) Power control method for considering situation of wireless power receiver in wireless power transmitter and the wireless power transmitter thereof
CN103107709B (en) There is the adaptive inductive power supply of communication capacity
CN203747451U (en) Battery charging device
US9190851B2 (en) Calibration and assignment processes in wireless power transfer systems
JP5930328B2 (en) System for wireless power transmission
CN105144545A (en) Wireless power transmission apparatus and method therefor
KR101391487B1 (en) Power receiving device and power receiving method
US9293945B2 (en) System and method for converting electric power, and apparatus and method for controlling the system
CN106104958A (en) For the device communicated with wireless power receptor and correlation technique
US20110234012A1 (en) Power receiving apparatus and wireless power transceiving system

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
CB03 Change of inventor or designer information
CB03 Change of inventor or designer information

Inventor after: Sun Wei

Inventor after: Liu Chao

Inventor after: Li Biao

Inventor after: Sun Hui

Inventor after: Lou Bingbing

Inventor after: Liu Bao

Inventor after: Su Qingbo

Inventor before: Li Dan

Inventor before: Sun Wei

Inventor before: Long Haian

GR01 Patent grant
GR01 Patent grant