CN108075578A - A kind of wireless charging load characteristic signal feedback method - Google Patents
A kind of wireless charging load characteristic signal feedback method Download PDFInfo
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- CN108075578A CN108075578A CN201611028803.3A CN201611028803A CN108075578A CN 108075578 A CN108075578 A CN 108075578A CN 201611028803 A CN201611028803 A CN 201611028803A CN 108075578 A CN108075578 A CN 108075578A
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- characteristic signal
- load characteristic
- wireless charging
- load
- control circuit
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Abstract
The invention discloses a kind of wireless charging load characteristic signal feedback methods, belong to wireless charging technical field, available for one-to-many wireless charging is realized, including step：Step 1, the first control circuit of at least one receiving terminal obtain the load characteristic signal of load；The load characteristic signal is coupled to transmitting terminal by step 2, the first control circuit by way of coupling；Step 3, receiving terminal demodulation coupled signal obtain the load characteristic signal.The problem of transmission of previous load characteristic signal needs the conscientious transmission of additional communication pattern is avoided by this technology, the efficiency of wireless charging is improved and reduces the complexity of wireless charging.
Description
Technical field
The present invention relates to wireless charging technical field, especially a kind of wireless charging load characteristic signal feedback method.
Background technology
Wireless power technology (ContactlessPowerSupply, CPS), also referred to as sensing misfortune close electric energy transmission technology
(InductiveCoupledPowerTransmission, ICPT), it is contactlessly powered to refer to that transmission line of electricity and load side are not having
Electrical connection and physical contact in addition they ask also relative motion in the case of, complete the transmission of electric energy.Contactless confession
The theoretical foundation of power technology is electromagnetic induction principle, brings disaster upon conjunction technology using modern electric electricity energy conversion technology, magnetic field, by
In modern control theory and micro- electricity control technology, transmission of the energy from static equipment to movable equipment is realized.
Mostly it is to use man-to-man wireless charging technology, and charging distance is very limited in current technology development.Separately
It is outer also to have an one-to-many wireless charging technology, but these one-to-many wireless charging technologies, and for transmitting terminal often
It is with multiple receiving coils couple by multiple transmitting coils transferring electric power.
Another question, for the load characteristic data (voltage or electric current etc.) of load end, previous technology concentrates on
It is passed through after obtaining characteristic by load end by Bluetooth technology or the realization transmission of wireless wifi technologies.The technology needs additional
Communication pattern come realize feature output interaction, it appears burden.
Therefore, the technical issues of above-mentioned, needs a kind of new technology to supplement.
The content of the invention
The present invention proposes a kind of wireless charging load characteristic signal feedback method for overcome the deficiencies in the prior art,
Purpose is that the feedback of coupling realization load characteristic signal is carried out by the coil of transmitting terminal and the coil of receiving terminal.
In order to solve the technical issues of above-mentioned, basic technical scheme proposed by the present invention is：A kind of wireless charging load is special
Reference feedback method is used to implement one-to-many wireless charging, including：
Step 1, the first control circuit of at least one receiving terminal obtain the load characteristic signal of load；
The load characteristic signal is coupled to transmitting terminal by step 2, the first control circuit by way of coupling；
Step 3, receiving terminal demodulation coupled signal obtain the load characteristic signal.
Further, step 2 includes：
(21) the first modulation circuit of first control circuit is modulated load characteristic signal；
(22) the load characteristic signal loading after conciliation is on the first coupling coil of receiving terminal；
(23) first coupling coils are coupled with the second coupling coil of transmitting terminal.
Further, step 3 includes：
(31) second control circuit of transmitting terminal obtains load characteristic signal；
(32) coupled signal is demodulated and obtains the load characteristic signal of load by the second demodulator circuit of second control circuit.
Further, the first control circuit includes to obtain for the load information of the load characteristic signal of acquisition load
Take unit.
Further, at least one in power and current value or voltage value of the load characteristic signal including load
It is a.
Further, the load special type signal after first modulating circuit modulates is pulse signal.
Further, first modulation circuit includes the first capacitance for being connected to first coupling coil one end, this first
One end of capacitance connects the other end of the second capacitance described in the second capacitance and a modulating capacitor and reconciles the other end company of capacitance
It is connected to the other end of the second coupling coil.
The beneficial effects of the invention are as follows：
Technical scheme obtains power, voltage value and the electric current of load by the first control circuit of load end
It is worth even load characteristic information, then realizes coupling via the first coupling coil of receiving terminal and the second coupling coil of transmitting terminal,
By the load characteristic signal transmission to transmitting terminal, referred to for transmitting terminal control power output.It is avoided in the past by this technology
The transmission of load characteristic signal the problem of additional communication pattern is needed to be transmitted, improve the efficiency and drop of wireless charging
The low complexity of wireless charging.
Description of the drawings
Fig. 1 is a kind of wireless charging system structure diagram of the present invention；
Fig. 2 is a kind of flow diagram of wireless charging load characteristic signal feedback method；
Fig. 3 is a kind of structure diagram of wireless charging load characteristic signal feedback method
Fig. 4 is the schematic diagram of the second demodulator circuit.
Specific embodiment
Below with reference to attached drawing 1 to 4, the present invention is described further, but the protection of the present invention should not be limited with this
Scope.For convenience of explanation and understand technical scheme, the noun of locality used in explanation is with the exhibition of attached drawing institute below
Subject to the orientation shown.
A kind of wireless charging load characteristic signal feedback method of the technical program, suitable for man-to-man wireless charging technology
Or one-to-many wireless charging technology.Specifically, illustrated in the present embodiment by taking one-to-many wireless charging as an example.
Compares figure 1, the present embodiment are used to implement one-to-many wireless charging, including：Transmitting terminal 1 and several independent receptions
End 2.In the present embodiment, the structure of each receiving terminal 2 is identical at the position for being that 1 relative position of transmitting terminal is consistent,
Power is equal.
During wireless charging, transmitting terminal 1 will be according to the load of receiving terminal 2 come transmission power, therefore transmitting terminal 1
It is necessary to obtain the power even load characteristic signal of receiving terminal 2.General load characteristic signal can include power, voltage value,
Current value or other load state informations.Traditional wireless charging technology is all based on Bluetooth technology, WiFi technology is realized and born
The transmission of characteristic signal is carried, but these technical stabilities are not high, are susceptible to failure, and add the knot of wireless charging
Structure, cost etc..
Compares figure 2 and Fig. 3, the technical solution of the present embodiment realize the transmission of characteristic by way of coupling and transferring.
It specifically includes：
Step 1, the first control circuit 21 of at least one receiving terminal 2 obtain the load characteristic signal of load；
The load characteristic signal is coupled to transmitting terminal by step 2, the first control circuit 21 by way of coupling
1；
Step 3, receiving terminal 1 demodulate coupled signal and obtain the load characteristic signal.
Above-mentioned technical solution is realized using existing hardware configuration addition demodulation modulation circuit.
Specifically, each receiving terminal 2 is adjusted after obtaining the load characteristic signal of load by first control circuit 21
System, then coupled to transmitting terminal 1.
Detailed, step 2 includes step：First modulation circuit 211 of first control circuit 21 to load characteristic signal into
Row modulation；Load characteristic signal loading after conciliation is on the first coupling coil 22 of receiving terminal 2；First coupling coil 22
It is coupled with the second coupling coil 11 of transmitting terminal 1.Herein, the loading of load characteristic signal is realized by the first modulation circuit 211.
In order to obtain the load characteristic signal of load, the first control circuit 21 further includes a load information and obtains
Unit 212, the load information acquiring unit 212 are common signal acquisition devices, such as when needing to obtain bearing power, are
Power-sensing circuit is, it is necessary to be voltage detecting circuit when obtaining voltage value, it is necessary to be current detection circuit when obtaining current value.Cause
This, in the present embodiment, the load characteristic signal be performance number, voltage value and current value either performance number and voltage value or
Performance number and voltage value.For art technology those of ordinary skill, the power-sensing circuit, voltage detecting circuit and electric current inspection
Slowdown monitoring circuit can be available circuit, therefore these circuits is not described in detail herein.In addition, load characteristic signal also may be used
Be load charge value.
The transmission signal by way of coupling is, it is necessary to by these load characteristic signal loadings on a high frequent signal.In this reality
Apply the modulation for realizing the load characteristic signal in example by the first modulation circuit 211.It, can in the present embodiment in order to be modulated
To use general modulator approach by load characteristic signal loading on coupled signal, the first modulation circuit 211 is modulated negative
It is pulse signal to carry extraordinary signal, due to there is many pulses inside 0 logic either 1 logic of pulse signal, but two
The amplitude of logic is different；So load, can be by this mode of coupling to transmitting terminal either in that state
Feedback, with the transfer efficiency and effect being optimal.
Wherein step 3 includes：The second control circuit 12 of transmitting terminal 1 obtains load characteristic signal；Second control circuit 12
The second demodulator circuit 121 coupled signal is demodulated to obtain load characteristic signal.Specifically, the load characteristic signal that demodulation obtains
Second control circuit 12 will be transferred to, controls the distribution of power according to load characteristic signal by the second control circuit 12.
It should be noted that as a specific embodiment, the first modulation circuit 211 described in the present embodiment includes being connected to
One end of the first capacitance C1 of 22 one end of the first coupling coil, first capacitance C1 connect the second capacitance C2 and a modulating capacitor
The other end of C3, the second capacitance C2 and the other end of conciliation capacitance C3 are connected to the other end of the second coupling coil 11.It is logical
It is realized to transmitting terminal feedback modulation coupled communication mode at overload end.Electric current above second coupling coil 11 of receiving terminal is
Dynamic change, because coupled between the inductance of the inductance of transmitting terminal 1 and receiving terminal 2, if electricity above the inductance of receiving terminal 2
The amplitude of pressure and electric current generates variation, then and the voltage and current above 1 inductance of transmitting terminal also accordingly generates amplitude variations, they
Between changed accordingly due to coupled relation.Therefore it may only be necessary to change the width of the voltage and electric current above 2 inductance of receiving terminal
It is worth size, transmitting terminal 1 is resolved to the output power size of receiving terminal 2.With reference to Fig. 4.
It should be noted that when receiving terminal 2 for it is at least two when and by this coupled modes by load characteristic signal
Transmitting terminal 1 is fed back to, transmitting terminal 1 can increase transmission power by improving input voltage or current system, to meet receiving terminal
It can realize the carry out power transmission of 2 or more, reach one-to-many and charge.In addition illustrate a bit, receiving device is all one
Sample, inductance coil and the number of turn above receiving device are the same, to ensure that the frequency of coupling is all consistent with transmission frequency.
The technical program realizes the characteristic signal transmission of the load of receiving terminal 2 by coupled modes, simple in structure, fast
Victory, and additional communication module is not required to be transmitted, the cost of product is reduced, and the event infinitely charged can be reduced
Barrier rate.
According to the disclosure and teachings of the above specification, those skilled in the art in the invention can also be to above-mentioned embodiment party
Formula is changed and changed.Therefore, the invention is not limited in specific embodiment disclosed and described above, to the present invention's
Some modifications and changes should also be as falling into the scope of the claims of the present invention.In addition, it although is used in this specification
Some specific terms, but these terms are merely for convenience of description, do not limit the present invention in any way.
Claims (7)
1. a kind of wireless charging load characteristic signal feedback method, is used to implement one-to-many wireless charging, which is characterized in that bag
It includes：
Step 1, the first control circuit of at least one receiving terminal obtain the load characteristic signal of load；
The load characteristic signal is coupled to transmitting terminal by step 2, the first control circuit by way of coupling；
Step 3, receiving terminal demodulation coupled signal obtain the load characteristic signal.
2. a kind of wireless charging load characteristic signal feedback method as described in claim 1, it is characterised in that：
Step 2 includes：
(21) the first modulation circuit of first control circuit is modulated load characteristic signal；
(22) the load characteristic signal loading after conciliation is on the first coupling coil of receiving terminal；
(23) first coupling coils are coupled with the second coupling coil of transmitting terminal.
3. a kind of wireless charging load characteristic signal feedback method as described in claim 1, it is characterised in that：
Step 3 includes：
(31) second control circuit of transmitting terminal obtains load characteristic signal；
(32) coupled signal is demodulated and obtains the load characteristic signal of load by the second demodulator circuit of second control circuit.
4. a kind of wireless charging load characteristic signal feedback method as described in claim 1, it is characterised in that：
The first control circuit includes to obtain the load information acquiring unit of the load characteristic signal of load.
5. a kind of wireless charging load characteristic signal feedback method as described in claim 1, it is characterised in that：
It is at least one in power and current value or voltage value of the load characteristic signal including load.
6. a kind of wireless charging load characteristic signal feedback method as described in claim 1, it is characterised in that：
Load special type signal after first modulating circuit modulates is pulse signal.
7. a kind of wireless charging load characteristic signal feedback method as claimed in claim 2, it is characterised in that：
First modulation circuit includes the first capacitance for being connected to first coupling coil one end, one end connection of first capacitance
The other end of the other end of second capacitance described in second capacitance and a modulating capacitor and conciliation capacitance is connected to the second coupling line
The other end of circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201611028803.3A CN108075578A (en) | 2016-11-18 | 2016-11-18 | A kind of wireless charging load characteristic signal feedback method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611028803.3A CN108075578A (en) | 2016-11-18 | 2016-11-18 | A kind of wireless charging load characteristic signal feedback method |
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| CN108075578A true CN108075578A (en) | 2018-05-25 |
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| CN201611028803.3A Pending CN108075578A (en) | 2016-11-18 | 2016-11-18 | A kind of wireless charging load characteristic signal feedback method |
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Cited By (4)
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| CN109687600A (en) * | 2018-12-20 | 2019-04-26 | 广东美的白色家电技术创新中心有限公司 | Electronic device, wireless power transmission receive circuit and communication means and wireless power transmission systems |
| CN110752862A (en) * | 2019-09-27 | 2020-02-04 | 上海楚山电子科技有限公司 | Wireless communication system and communication method using load modulation assisted frequency hopping |
| WO2020147127A1 (en) * | 2019-01-18 | 2020-07-23 | Oppo广东移动通信有限公司 | Wireless charging control method and charging control apparatus |
| WO2021179302A1 (en) * | 2020-03-13 | 2021-09-16 | Abb Power Electronics Inc. | Wireless power supply device, wireless powered device, wireless power transmission system and manufacturing method thereof |
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| CN109687600A (en) * | 2018-12-20 | 2019-04-26 | 广东美的白色家电技术创新中心有限公司 | Electronic device, wireless power transmission receive circuit and communication means and wireless power transmission systems |
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| WO2021179302A1 (en) * | 2020-03-13 | 2021-09-16 | Abb Power Electronics Inc. | Wireless power supply device, wireless powered device, wireless power transmission system and manufacturing method thereof |
| US11949245B2 (en) | 2020-03-13 | 2024-04-02 | Abb Power Electronics Inc. | Wireless power supply device, wireless powered device, wireless power transmission system and manufacturing method thereof |
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