CN102611213A - Wireless power supply system and method oriented to multiple terminals - Google Patents
Wireless power supply system and method oriented to multiple terminals Download PDFInfo
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- CN102611213A CN102611213A CN201210095192XA CN201210095192A CN102611213A CN 102611213 A CN102611213 A CN 102611213A CN 201210095192X A CN201210095192X A CN 201210095192XA CN 201210095192 A CN201210095192 A CN 201210095192A CN 102611213 A CN102611213 A CN 102611213A
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Abstract
The invention discloses a wireless power supply system and a method oriented to multiple terminals. The method specifically comprises the following steps that: a wireless power supply platform transmits fixed-cycle communication electromagnetic waves through a transmitting coil; after the receiving coils of the multiple terminals respectively receive the electromagnetic waves transmitted by the transmitting coil, the switching circuits of the receiving coils respectively are turned on and off according to a fixed encoding method; the wireless power supply platform receives electromagnetic waves corresponding to the turning-on and turning-off actions of the receiving coils to obtain loaded terminal information; and then the platform transmits electromagnetic waves of required frequency, voltage and power to the coils at the positions of the terminals according to communication information requirements. The wireless power supply system and the method oriented to multiple terminals can realize the wireless charging of multiple different-input terminals at the same time, have the advantages of simple communication, multiple targets and wide output, and realize real wireless charging.
Description
Technical field
The present invention relates to a kind of wireless power supply system and method, relate in particular to a kind of wireless power platform and method of can be simultaneously a plurality of different capacities and voltage termination being supplied power.
Background technology
Along with the increase of science and technology development and people's demand, the electronic product that the individual has is more and more.
The supply power mode of ordinary electronic equipment perhaps is connected directly to the computer USB mouth for to convert industrial-frequency alternating current into satisfactory low pressure through power supply adaptor.This common supply power mode shows many drawbacks gradually, for example: because the voltage and the interface of various electronic products differ, caused producing a large amount of adapters and lead, caused the wasting of resources and environmental pollution; If circuit twines for a plurality of terminals supply power then simultaneously, make troubles to use.
At present; The wireless charging device of existing miniaturized electronics to mobile phone etc.; Its basic principle is the electric current that the control circuit of reflector produces certain frequency, power; Send electromagnetic wave through transmitting coil, receiving coil is a power electronic equipment through over commutation, filtering, voltage stabilizing again after receiving electromagnetic wave.
Existing wireless charging device is that a wireless launcher is equipped with a specific wireless receiver mostly, and just a wireless charging device is merely a wireless power consumption equipment power supply, can only carry out man-to-man charging.So existing wireless charging device can't be imported the power devices of demand to difference, more can't realize simultaneously a plurality of wireless power consumption equipment power supplies.
Therefore, there is defective in prior art, needs further improvement and develops.
Summary of the invention
The object of the present invention is to provide a kind of apparatus and method that can realize wireless power simultaneously to a plurality of different terminals, can be to realize a wireless charging device to the power supply at a plurality of terminals.
Technical scheme of the present invention is following:
Towards the wireless power supply system of multiple terminals, comprise wireless power platform and a plurality of terminal with radio receiver, wherein,
Said wireless power supply system comprises the control circuit that same power supply/power connector connects, and also comprises a plurality of transmitting coils that are connected in parallel on the said control circuit;
Said radio receiver comprises the receiving coil that connects with the current processing circuit, and said current processing circuit comprises the switching circuit that connects with receiving coil;
The control circuit of said wireless power platform is through the transmitting coil communication electromagnetic wave of emission fixed cycle; After the receiving coil at said a plurality of terminals is received the electromagnetic wave of transmitting coil, carry out the open and close action according to fixing coded system respectively; Said wireless power platform is received and the corresponding electromagnetic wave of receiving coil switch motion, obtains the end message of load, is the terminal power supply according to end message.
Described wireless power supply system, wherein, said control circuit sent the detection electric current in several cycles with the form of scanning successively to each transmitting coil before the communication electromagnetic wave of emission fixed cycle; Produce mutual inductance effect between the receiving coil at said transmitting coil and terminal, and produce the mutual inductance electric current; Said control circuit judges whether there is the mutual inductance electric current on the transmitting coil and then judges whether to exist the terminal through the variation of transmitting coil electric current or waveform.
Described wireless power supply system, wherein, said end message comprises that whether wave frequency, electric current, voltage and power, the terminal at terminal are for receiving electric terminals.
Described wireless power supply system, wherein said end message are the non-electric terminals that receives, and said wireless power platform is stopped power supply.
Described wireless power supply system is characterized in that, said end message is wave frequency, electric current, voltage and power, and the electromagnetic wave of said end message is satisfied in said wireless power platform emission.
Towards the wireless power method of multiple terminals, be applicable to that the wireless power platform to a plurality of terminal power supplies with radio receiver, specifically may further comprise the steps:
Steps A, said wireless power platform are through the transmitting coil communication electromagnetic wave of emission fixed cycle;
After the receiving coil at step B, a plurality of terminals was received the electromagnetic wave of transmitting coil respectively, its switching circuit carried out the open and close action according to fixing coded system respectively;
Step C, said wireless power platform are received and the corresponding electromagnetic wave of receiving coil switch motion, obtain the end message of load, are the terminal power supply according to end message.
Described method, wherein, further comprising the steps of before the said steps A:
Step 1, said wireless power platform send the detection electric current in several cycles successively with the form of scanning to each transmitting coil;
Receiving coil on step 2, the said transmitting coil produces mutual inductance effect, produces the mutual inductance electric current;
Step 3, said wireless power platform pass through the variation of transmitting coil electric current or waveform, judge whether there is the mutual inductance electric current on the transmitting coil and then judges whether to exist load.
Described method, wherein, said end message comprises that whether voltage and power, the terminal at terminal are for receiving electric terminals.
Described method, wherein, after the said step 3, said end message is the non-electric terminals that receives, said wireless power platform is stopped power supply.
Described method, wherein, after the said step 3, said end message is wave frequency, electric current, voltage and power, this satisfies the electromagnetic wave of this end message said wireless power platform emission.
Compared with prior art; The invention provides a kind of wireless power supply system and method towards the multiple terminals; The wireless power platform of this system and method is through launching the communication electromagnetic wave of fixed cycle to the terminal, and after the receiving coil at terminal was received the electromagnetic wave of transmitting coil respectively, its switching circuit carried out the open and close action according to fixing coded system respectively; The wireless power platform is received the end message that obtains load with the corresponding electromagnetic wave of switch motion; Realize simultaneously wireless charging being carried out at terminals a plurality of, that input differs simultaneously, be that a kind of communication is simple, the wireless power supply system and the method for multiple target, wide output, realize real wireless charging.
Description of drawings
Fig. 1 is the structural representation of wireless power supply system of the present invention;
Fig. 2 is the structural representation of the control circuit of wireless power platform of the present invention;
Fig. 3 is the structural representation of wireless power platform of the present invention;
Fig. 4 is the structural representation of radio receiver of the present invention;
Fig. 5 is the schematic flow sheet of wireless power method of the present invention.
Embodiment
Below in conjunction with accompanying drawing, further explain is done in preferred embodiment of the present invention.
The present invention provides the wireless power supply system towards the multiple terminals; As shown in Figure 1, comprise wireless power platform and terminal with radio receiver, said terminal has a plurality of; Said terminal can be various electronic equipments such as mobile phone, shaver, panel computer, does not limit here.
Said wireless power platform, as shown in Figure 3, comprise the control circuit that same power supply/power connector connects, also comprise a plurality of transmitting coils that are connected in parallel on the said control circuit.Said power connector connects industrial-frequency alternating current.Said control circuit; As shown in Figure 2; Comprise central processing unit, the switching circuit that is connected with said central processing, be arranged on comparison circuit and radio circuit between said switching circuit and the central processing unit, said radio circuit comprises voltage stabilizing circuit, current rectifying and wave filtering circuit, amplifying circuit etc.Said switching circuit connects each transmitting coil, under the control of said central processing unit, can control the opening and closing of each transmitting coil respectively.Wireless power platform of the present invention can comprise 4*4 transmitting coil, can be through control circuit at the same time or separately to a plurality of transmitting coil power supplies, and the switch of its coil, transmitting power, frequency are determined by said control circuit.Said a plurality of transmitting coil is clouded in a platform according to certain distribution mode, and said a plurality of transmitting coils also can be arranged on the desktop, and the form of wireless power platform with the wireless power table existed.
Said radio receiver; Like Fig. 1 and shown in Figure 4; Comprise the receiving coil that connects with the current processing circuit, said current processing circuit comprises switching circuit and the current rectifying and wave filtering circuit that is connected on the processor, and said current rectifying and wave filtering circuit connects with voltage stabilizing circuit; Said voltage stabilizing circuit connects with electronic equipment, and said switching circuit connects with receiving coil.
Said wireless power platform provides the alternating current of certain frequency to all transmitting coils through control circuit; Institute's transmitting coil will be launched electromagnetic wave; Because the self inductance effect of coil produces self inductance current in the said transmitting coil, the electric current that makes the transmitting coil end is I1.As the closed-loop path; For example receiving coil, metal that volume is bigger etc. near the time, except that self inductance current, said transmitting coil also therewith the closed-loop path mutual inductance effect takes place; In said transmitting coil loop, produce new induced current, thereby make the electric current in the transmitting coil become I2.Said comparison circuit and central processing unit can be instant receive the current value on the said transmitting coil.
Wireless power platform of the present invention can judge whether there is load on the transmitting coil, and can judge the position that load exists.Concrete, said central processing unit, for example every according to certain cycle at a distance from 1 second, send the low-power in several cycles to each transmitting coil successively with the form of scanning and detect electric current.The electromagnetic frequency of wireless charging is thousand to million ranks, and the power consumption of detection electric current of sending several cycles is extremely low.Through judging whether each scanning element transmitting coil exists mutual inductance effect, and whether the electric current of transmitting coil or waveform change, just knowing is whether to have load on the transmitting coil.Have load on the transmitting coil that electric current changes, load is positioned on the transmitting coil of electrorheologicalization.If the electric current on the transmitting coil of scanning back does not change, obviously, there is not load to exist on this transmitting coil.When load was not deposited, the central processing unit of said wireless power platform continued that transmitting coil is sent periodic low-power and detects electric current, periodically detects whether there is load on the transmitting coil.
This method can only judge whether the transmitting coil place has metal or closed-loop path; And can not judge whether to be the wireless charging terminal; More can not obtain end message; Also just can not learn the required voltage in terminal, power and other information, said wireless power platform can only provide the electromagnetic wave of fixing voltage, power and frequency to the terminal.
The present invention is towards the another one preferred embodiment of the wireless power method of multiple terminals, and simple communication can be carried out in wireless power platform and terminal, and is as shown in Figure 5, and the detection electric current of said wireless power platform transmit cycle is to confirm loaded transmitting coil; The mode that defines the load transmitting coil is the same.Said wireless power platform is to loaded transmitting coil, and the communication electromagnetic wave in a cycle is fixed in emission.This method also can be removed the step of the detection electric current of transmit cycle from.
The terminal is after the electromagnetic wave energy that receives transmitting coil for the first time, and the switching circuit of the processor of said current processing circuit control receiving coil makes it carry out the open and close action according to fixing coded system." open ", receiving coil is closed, and receiving coil and transmitting coil produce mutual inductance effect, and said central processing unit is perceived as " load is arranged "; " pass ", receiving coil opens circuit, and receiving coil and transmitting coil do not produce mutual inductance effect, and said central authorities handle and are perceived as " non-loaded ".
Like this; Through the coupling of transmitting coil and receiving coil, the wireless power platform can obtain the series switch information whether load exists, and through the coded system decoding of agreement in advance; Thereby the acquisition end message, and the wireless electromagnetic wave energy is provided according to the demand in the end message.Said end message comprises information such as the demand wave frequency, electric current, voltage, power at terminal.
And when load place is metal or closed-loop path; The information that its transmitting terminal receives is merely lasting " load existence "; Can be judged as " the non-electric terminals that receives "; The transmitting coil of said wireless power platform stops the power supply to this terminal, not only saves energy, but also can avoid metal or closed-loop path to produce the induced current heating producing dangerous.
When obtaining the information such as demand wave frequency, electric current, voltage and power at terminal, the control circuit of said wireless power platform, according to the demand at terminal, the electromagnetic wave of the current emission demand of control transmitting coil.
For example: definition, " long opening " with 20 cycles represent 1, " short opening " represent 0, close with 10 cycles and represent at interval with 10 cycles.Cycle N is under 100 the situation; Like receiving coil in this 100 cycles; The current processing circuit makes the state of receiving coil be " long on-off-weak point on-off-long on-off-weak point on-off "; Then central processing unit is judged as " load exists for a long time-at interval-the load short time exists-at interval-load exists for a long time-at interval-the load short time exists ", is translated into " 1010 " signal at terminal, expression " the reception rated voltage 5V of wireless terminal, power 5W "; The demand of said like this central processing unit installing terminal, the electromagnetic wave of the current emission demand of control transmitting coil.
After receiving coil on the said terminal receives the electromagnetism of demand,, electric current is converted into the voltage stabilizing direct current, uses direct current of voltage regulation stream to be the power electronic equipment on the terminal again through the current processing circuit.
The method of supplying power to of wireless power platform of the present invention can make wireless power platform and terminal realize simple communication; When metal object during near transmitting coil; Said wireless power platform is through judging that with the communication of metal object it need not receive electromagnetic energy; Avoid metal to be in for a long time and understand the generation great amount of heat in the electromagnetic wave and produce danger, and the waste electric energy.
Wireless power supply system and method towards the multiple terminals provided by the invention; Need not to increase on the basis of extra communication module; Realize the communication between wireless power platform and the terminal; Judge whether load is wireless terminal device and obtains end message, for target provides required wireless electromagnetic wave energy; Realize simultaneously wireless charging being carried out at terminals a plurality of, that input differs simultaneously, be that a kind of communication is simple, the wireless power supply system and the method for multiple target, wide output, realize real wireless charging.
Should be understood that above-mentioned statement to preferred embodiment of the present invention is comparatively detailed, can not therefore think the restriction to scope of patent protection of the present invention, scope of patent protection of the present invention should be as the criterion with accompanying claims.
Claims (10)
1. towards the wireless power supply system of multiple terminals, comprise wireless power platform and a plurality of terminal, it is characterized in that with radio receiver,
Said wireless power supply system comprises the control circuit that same power supply/power connector connects, and also comprises a plurality of transmitting coils that are connected in parallel on the said control circuit;
Said radio receiver comprises the receiving coil that connects with the current processing circuit, and said current processing circuit comprises the switching circuit that connects with receiving coil;
The control circuit of said wireless power platform is through the transmitting coil communication electromagnetic wave of emission fixed cycle; After the receiving coil at said a plurality of terminals is received the electromagnetic wave of transmitting coil, carry out the open and close action according to fixing coded system respectively; Said wireless power platform is received and the corresponding electromagnetic wave of receiving coil switch motion, obtains the end message of load, is the terminal power supply according to end message.
2. wireless power supply system according to claim 1 is characterized in that, said control circuit sent the detection electric current in several cycles with the form of scanning successively to each transmitting coil before the communication electromagnetic wave of emission fixed cycle; Produce mutual inductance effect between the receiving coil at said transmitting coil and terminal, and produce the mutual inductance electric current; Said control circuit judges whether there is the mutual inductance electric current on the transmitting coil and then judges whether to exist the terminal through the variation of transmitting coil electric current or waveform.
3. wireless power supply system according to claim 2 is characterized in that, said end message comprises that whether wave frequency, electric current, voltage and power, the terminal at terminal are for receiving electric terminals.
4. wireless power supply system according to claim 3 is characterized in that, said end message is the non-electric terminals that receives, and said wireless power platform is stopped power supply.
5. wireless power supply system according to claim 3 is characterized in that, said end message is wave frequency, electric current, voltage and power, and the electromagnetic wave of said end message is satisfied in said wireless power platform emission.
6. towards the wireless power method of multiple terminals, be applicable to that the wireless power platform to a plurality of terminal power supplies with radio receiver, specifically may further comprise the steps:
Steps A, said wireless power platform are through the transmitting coil communication electromagnetic wave of emission fixed cycle;
After the receiving coil at step B, a plurality of terminals was received the electromagnetic wave of transmitting coil respectively, its switching circuit carried out the open and close action according to fixing coded system respectively;
Step C, said wireless power platform are received and the corresponding electromagnetic wave of receiving coil switch motion, obtain the end message of load, are the terminal power supply according to end message.
7. method according to claim 6 is characterized in that, and is further comprising the steps of before the said steps A:
Step 1, said wireless power platform send the detection electric current in several cycles successively with the form of scanning to each transmitting coil;
Step 2, transmitting coil and receiving coil generation mutual inductance effect produce the mutual inductance electric current;
Step 3, said wireless power platform pass through the variation of transmitting coil electric current or waveform, judge whether produce the mutual inductance electric current on the transmitting coil and then judge whether to exist load.
8. method according to claim 7 is characterized in that, said end message comprises that whether wave frequency, electric current, voltage and power, the terminal at terminal are for receiving electric terminals.
9. method according to claim 8 is characterized in that, after the said step 3, said end message is the non-electric terminals that receives, and said wireless power platform is stopped power supply.
10. method according to claim 8 is characterized in that, after the said step 3, said end message is wave frequency, electric current, voltage and power, and this satisfies the electromagnetic wave of this end message said wireless power platform emission.
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| CN201210095192XA CN102611213A (en) | 2012-03-31 | 2012-03-31 | Wireless power supply system and method oriented to multiple terminals |
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| CN103216796A (en) * | 2013-03-29 | 2013-07-24 | 襄阳亦昇光电科技有限公司 | LED (Light-Emitting Diode) lamp based on discrete wireless power supply |
| CN103457332A (en) * | 2013-10-08 | 2013-12-18 | 平湖凌云信息科技有限公司 | Wireless charger device and wireless charging method |
| CN103560562A (en) * | 2013-11-11 | 2014-02-05 | 天津工业大学 | Location self-adaptation wireless charging coupler |
| CN103887842A (en) * | 2012-12-20 | 2014-06-25 | Nxp股份有限公司 | Wireless charging apparatus and method |
| WO2014166204A1 (en) * | 2013-07-24 | 2014-10-16 | 中兴通讯股份有限公司 | Wireless charging device and method |
| CN104124996A (en) * | 2013-04-28 | 2014-10-29 | 海尔集团技术研发中心 | Method and system for realizing wireless communication of wireless power transmission system |
| CN104124771A (en) * | 2013-04-28 | 2014-10-29 | 海尔集团技术研发中心 | Method and device for multi-coil wireless electric energy transmission |
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| WO2014176872A1 (en) * | 2013-04-28 | 2014-11-06 | 海尔集团技术研发中心 | Power regulation method and system for wireless electric energy transmission system |
| CN104253462A (en) * | 2013-06-28 | 2014-12-31 | 海尔集团技术研发中心 | Coil structure for wireless charger and charging control method |
| CN105720629A (en) * | 2014-12-18 | 2016-06-29 | 罗伯特·博世有限公司 | Charging device for charging electric energy storage device |
| CN106887906A (en) * | 2015-12-16 | 2017-06-23 | 泰科电子(上海)有限公司 | Wireless power supply and electrical equipment |
| WO2017133238A1 (en) * | 2016-02-01 | 2017-08-10 | 施京京 | Method and circuit for wireless transmission of high-power electrical energy |
| CN107332293A (en) * | 2016-04-29 | 2017-11-07 | 比亚迪股份有限公司 | Onboard wireless charging method and device |
| CN107615782A (en) * | 2015-05-20 | 2018-01-19 | 英派尔科技开发有限公司 | Concurrent wireless power transmission and data transfer |
| CN109510288A (en) * | 2018-12-18 | 2019-03-22 | 成都瑞德星无线技术有限公司 | A kind of one-to-many wireless charging system and control method of power adaptive allotment |
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| CN110768382A (en) * | 2018-07-25 | 2020-02-07 | Oppo广东移动通信有限公司 | Wireless charging method and device, storage medium and electronic equipment |
| CN111541308A (en) * | 2020-05-09 | 2020-08-14 | 中车株洲电力机车研究所有限公司 | Control method and control system for dynamic non-contact power supply |
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| CN103887842A (en) * | 2012-12-20 | 2014-06-25 | Nxp股份有限公司 | Wireless charging apparatus and method |
| CN103216796A (en) * | 2013-03-29 | 2013-07-24 | 襄阳亦昇光电科技有限公司 | LED (Light-Emitting Diode) lamp based on discrete wireless power supply |
| CN104124768B (en) * | 2013-04-28 | 2018-04-20 | 海尔集团技术研发中心 | The wireless power supply system receiving terminal recognition methods of multi-coil arrays formula and system |
| CN104124996A (en) * | 2013-04-28 | 2014-10-29 | 海尔集团技术研发中心 | Method and system for realizing wireless communication of wireless power transmission system |
| CN104124771A (en) * | 2013-04-28 | 2014-10-29 | 海尔集团技术研发中心 | Method and device for multi-coil wireless electric energy transmission |
| CN104124768A (en) * | 2013-04-28 | 2014-10-29 | 海尔集团技术研发中心 | Multi-coil array type wireless power supply system receiving end identification method and system |
| WO2014176837A1 (en) * | 2013-04-28 | 2014-11-06 | 海尔集团技术研发中心 | A method and device for multi-coil wireless electric energy transmission |
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| CN104253462A (en) * | 2013-06-28 | 2014-12-31 | 海尔集团技术研发中心 | Coil structure for wireless charger and charging control method |
| WO2014166204A1 (en) * | 2013-07-24 | 2014-10-16 | 中兴通讯股份有限公司 | Wireless charging device and method |
| US9893558B2 (en) | 2013-07-24 | 2018-02-13 | Zte Corporation | Wireless charging device and method |
| CN103457332A (en) * | 2013-10-08 | 2013-12-18 | 平湖凌云信息科技有限公司 | Wireless charger device and wireless charging method |
| CN103560562B (en) * | 2013-11-11 | 2016-05-18 | 天津工业大学 | Position adaptive wireless charging coupler |
| CN103560562A (en) * | 2013-11-11 | 2014-02-05 | 天津工业大学 | Location self-adaptation wireless charging coupler |
| CN105720629A (en) * | 2014-12-18 | 2016-06-29 | 罗伯特·博世有限公司 | Charging device for charging electric energy storage device |
| CN107615782A (en) * | 2015-05-20 | 2018-01-19 | 英派尔科技开发有限公司 | Concurrent wireless power transmission and data transfer |
| CN106887906A (en) * | 2015-12-16 | 2017-06-23 | 泰科电子(上海)有限公司 | Wireless power supply and electrical equipment |
| WO2017133238A1 (en) * | 2016-02-01 | 2017-08-10 | 施京京 | Method and circuit for wireless transmission of high-power electrical energy |
| CN107332293A (en) * | 2016-04-29 | 2017-11-07 | 比亚迪股份有限公司 | Onboard wireless charging method and device |
| CN110768382A (en) * | 2018-07-25 | 2020-02-07 | Oppo广东移动通信有限公司 | Wireless charging method and device, storage medium and electronic equipment |
| CN109510268A (en) * | 2018-11-30 | 2019-03-22 | 努比亚技术有限公司 | Terminal charging method, mobile terminal and computer readable storage medium |
| CN109510268B (en) * | 2018-11-30 | 2024-04-02 | 努比亚技术有限公司 | Terminal charging method, mobile terminal and computer readable storage medium |
| CN109510288A (en) * | 2018-12-18 | 2019-03-22 | 成都瑞德星无线技术有限公司 | A kind of one-to-many wireless charging system and control method of power adaptive allotment |
| CN111541308A (en) * | 2020-05-09 | 2020-08-14 | 中车株洲电力机车研究所有限公司 | Control method and control system for dynamic non-contact power supply |
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Application publication date: 20120725 |