CN107945490A - A kind of means of communication suitable for wireless charging system - Google Patents
A kind of means of communication suitable for wireless charging system Download PDFInfo
- Publication number
- CN107945490A CN107945490A CN201711266707.7A CN201711266707A CN107945490A CN 107945490 A CN107945490 A CN 107945490A CN 201711266707 A CN201711266707 A CN 201711266707A CN 107945490 A CN107945490 A CN 107945490A
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- CN
- China
- Prior art keywords
- circuit
- terminal
- transmitting terminal
- receiving terminal
- mcu
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- Legal status (The legal status 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 status listed.)
- Pending
Links
- 238000004891 communication Methods 0.000 title claims abstract description 27
- 238000007600 charging Methods 0.000 title claims abstract description 25
- 230000005540 biological transmission Effects 0.000 claims abstract description 23
- 230000005611 electricity Effects 0.000 claims description 10
- 238000001514 detection method Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 3
- 238000005070 sampling Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/04—Arrangements for transmitting signals characterised by the use of a wireless electrical link using magnetically coupled devices
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- H04B5/48—
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- H04B5/79—
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- 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
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention discloses a kind of means of communication suitable for wireless charging system, wireless charging system includes transmitting terminal and receiving terminal, and transmitting terminal includes transmitting terminal oscillating circuit, inverter circuit, the transmitting terminal sample circuit for detecting electric current and the transmitting terminal MCU for controlling transmitting terminal to run；Receiving terminal includes receiving terminal oscillating circuit, rectification circuit, load, receiving terminal MCU and modulation circuit；Modulation circuit includes extra load, when receiving terminal needs to terminate energy transmission, receiving terminal MCU is periodically by the output terminal of the extra load access rectification circuit in modulation circuit, after the transmitting terminal MCU of transmitting terminal detects periodically variable current signal by transmitting terminal sample circuit, then transmitting terminal is controlled to terminate energy transmission.The means of communication of the present invention are realized simple, it is not necessary to simple communication between the two can be realized by configuring extra communication device in transmitting terminal and receiving terminal and writing communication software, can effectively save cost, prevent receiving terminal from energy occur and overcharging phenomenon.
Description
Technical field
The present invention relates to wireless charging field, more particularly in a kind of wireless charging system between transmitting terminal and receiving terminal
The means of communication.
Background technology
In wireless charging system, receiving terminal, from transmitting terminal inductive energy, realizes energy by way of electromagnetic induction
It is wirelessly transferred.In order to realize effective operating of the wireless charging system, it is necessary to carry out Communication Control between receiving terminal and transmitting terminal.
In this regard, international two Major Leagues：WPC and A4WP has formulated the standard and communications protocol of some wireless chargings,
Realize the purpose that wireless charging system electric energy effectively transmits.
The communication modes that international standard defines are suitable for the wireless charging system that energy transmission needs accurately to control, except needing
Want outside the communication modulation circuit of receiving terminal and the demodulator circuit of transmitting terminal Tx, system also needs to the communication of the coding and decoding of software
Agreement.But for some application fields that only need to simply communicate, such as the present invention needs to realize that receiving terminal is sent out to transmitting terminal
The signal for terminating energy transmission is sent, the communication modes that above-mentioned international standard defines do not apply to.Therefore need to customize for this suitably
Communication modes, to realize simple communication.
The content of the invention
Goal of the invention：In order to overcome the deficiencies in the prior art, the present invention provides a kind of for allowing receiving terminal to hair
Sending end sends the means of communication suitable for wireless charging system for terminating energy transmission signal.
Technical solution：To achieve the above object, the means of communication suitable for wireless charging system of the invention, wireless charging
System includes producing electricl energy the transmitting terminal and receiving terminal of transmission, the transmitting terminal include transmitting terminal oscillating circuit, inverter circuit,
For detecting the transmitting terminal sample circuit of electric current and the transmitting terminal MCU for controlling transmitting terminal to run, the transmitting terminal sampling
Circuit is electrically connected the transmitting terminal MCU；The receiving terminal includes receiving terminal oscillating circuit, rectification circuit, defeated with rectification circuit
Load, receiving terminal MCU and the modulation circuit of outlet connection；The modulation circuit includes extra load, when receiving terminal needs to tie
When beam energy transmits, receiving terminal MCU periodically by the output terminal of the extra load access rectification circuit in modulation circuit, works as institute
State transmitting terminal transmitting terminal MCU periodically variable current signal is detected by transmitting terminal sample circuit after, transmitting terminal MCU control
Transmitting terminal processed terminates energy transmission.
Further, after the power is turned on, into detection loitering phase, its transmitting terminal MCU is intermittent to send one section to the transmitting terminal
Pulse width modulating signal driving inverter circuit work, and curent change is detected by transmitting terminal sample circuit in the process,
Receiving terminal presence is determined whether accordingly, if judging to enter the energy transmission stage with the presence of receiving terminal, transmitting terminal, if judging not having
Receiving terminal exists, then transmitting terminal is maintained at detection loitering phase.
Further, the receiving terminal further includes receiving terminal sample circuit and output control circuit, the rectification circuit
Output terminal pass through the receiving terminal sample circuit and output control circuit and connect the load, the receiving terminal sample circuit
And output control circuit is electrically connected the receiving terminal MCU, receiving terminal MCU is by the output control circuit by rectification circuit
The load is supplied to after the voltage processing of output.
Further, the transmitting terminal further includes transmission terminal protecting circuit, and the output terminal further includes output terminal protection electricity
Road.
Further, when receiving terminal MCU detects that the electricity loaded in the receiving terminal is full of, the receiving terminal MCU cycles
Property by modulation circuit extra load access rectification circuit output terminal.
Further, the extra load is resistance.
Beneficial effect：The means of communication suitable for wireless charging system of the present invention need to terminate energy transmission in receiving terminal
When, the output terminal in modulation circuit periodically in rectification circuit accesses certain load so that the overall load week of receiving terminal
Phase property changes, and forms the effect of modulated signal, and transmitting terminal detects on its main road in real time, if detecting the mechanical periodicity rule of electric current
Rule, then terminate energy transmission, and this method is realized simple, it is not necessary to transmitting terminal and receiving terminal configure extra communication device with
And write communication software and can realize simple communication between the two, can effectively save cost, prevent receiving terminal from energy occur
Overcharge phenomenon.
Brief description of the drawings
Attached drawing 1 is the composition figure of wireless charging system.
Embodiment
The present invention is further described below in conjunction with the accompanying drawings.
Wireless charging system as shown in Figure 1 includes the transmitting terminal 1 and receiving terminal 2 that can produce electricl energy transmission, the hair
Sending end 1 includes sequentially connected input circuit 16, transmitting terminal sample circuit 11, inverter circuit 14, transmitting terminal oscillating circuit 13, also
The transmitting terminal MCU12 that is run including control transmitting terminal 1 and terminal protecting circuit 15 is sent, it is the transmitting terminal sample circuit 11, defeated
Enter circuit 16 and 14 three of inverter circuit is electrically connected the transmitting terminal MCU12；Input circuit 16 connects power supply, and transmitting terminal is adopted
Sample circuit 11 can acquisition testing transmitting terminal 1 main line electric current.
The receiving terminal 2 is successively comprising receiving terminal oscillating circuit 24, rectification circuit 25, receiving terminal sample circuit 26, output
Control circuit 27 and load 21, further include receiving terminal MCU22, modulation circuit 23 and receive terminal protecting circuit 28；The tune
Circuit 23 processed includes extra load, preferably described extra load resistance.The receiving terminal sample circuit 26, output control circuit
27th, load 21, modulation circuit 23 and reception terminal protecting circuit 28 are electrically connected the receiving terminal MCU22.
The workflow of the wireless charging system is as follows：
After the power is turned on, transmitting terminal MCU12 begins to work to transmitting terminal 1 first, in the presence of no receiving terminal 2, hair
Sending end 1 enters detection loitering phase (" Ping stages "), its transmitting terminal MCU12 can the intermittent pulse for sending one section of specified time
Bandwidth modulation signals (pwm signal) driving inverter circuit 14 works, and direct current is changed into alternating current, so that transmitting terminal vibration electricity
There is alternating current on the transmission end-coil that road 13 includes by so as to form magnetic field on end-coil is sent.
At this time if receiving terminal 2 is placed in the position range specified, due to receiving end line in receiving terminal oscillating circuit 24
Circle can sense changing magnetic field, and changing magnetic field is converted into electric field by receiving terminal oscillating circuit 24, and final output is certain
The voltage of scope, so as to drive the circuit behind receiving terminal 2 to work.For transmitting terminal 1, receiving terminal 2 is just equivalent to be applied to
The load of the output terminal of transmitting terminal 1.Transmitting terminal 1 is detected on transmitting terminal oscillating circuit 13 by transmitting terminal sample circuit 11 at this time
Curent change, it is possible to the presence of receiving terminal 2 is determined, hence into energy transmission (Power Transfer) stage, hair
Sending end MCU12 will continue to send PWM ripples so that transmitting terminal 1 can persistently supply energy to receiving terminal 2；If transmitting terminal 1 is examined
Measure no receiving terminal 2 to exist, the Ping stages will be constantly in.
Transmitting terminal 1 enters energy transmission (Power Transfer) after the stage, and receiving terminal 2 passes through receiving terminal oscillating circuit 24
The alternating voltage (VAC) that middle reception end-coil receives becomes DC voltage after rectification circuit 25, drives receiving terminal 2 and bears
21 are carried to start to work normally.At the same time receiving terminal 2 need control rectification circuit 25 export DC voltage, stabilize it effectively and
Safely it is supplied to load.Specifically, receiving terminal MCU22 gathers the electricity on 2 main road of receiving terminal by receiving terminal using circuit 26
Information of voltage is flowed, and the load is supplied to after the voltage that rectification circuit 25 exports is handled by the output control circuit 27
21。
When the load 21 in receiving terminal 2 receives enough electricity (electricity is full of), overcharge in order to prevent, receiving terminal 2 needs
To communicate with transmitting terminal 1 and inform that it needs to terminate energy transmission, the means of communication between the two are at this time：Receiving terminal MCU22 weeks
Extra load in modulation circuit 23 is accessed to phase property the output terminal of rectification circuit 25, for example, receiving terminal MCU22 is with 100Hz
Frequency (10ms cycles) extra load (such as resistance of 100 Ω) is linked into the output terminal of rectification circuit, such receiving terminal 2
Overall load can cyclically-varying so that the electricity of transmitting terminal 1 produces cyclically-varying, forms the effect of modulated signal, when
The transmitting terminal MCU12 of the transmitting terminal 1 detects there is periodically variable electricity on its main stem by transmitting terminal sample circuit 11
After flowing signal, transmitting terminal MCU12 control transmitting terminals 1 terminate energy transmission.
The above is only the preferred embodiment of the present invention, it should be pointed out that：For the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (6)
1. a kind of means of communication suitable for wireless charging system, wireless charging system includes the transmitting terminal that can produce electricl energy transmission
(1) with receiving terminal (2), it is characterised in that：The transmitting terminal (1) includes inverter circuit (14), transmitting terminal oscillating circuit (13), uses
Transmitting terminal sample circuit (11) in detection electric current and the transmitting terminal MCU (12) for controlling transmitting terminal (1) to run, the hair
Sending end sample circuit (11) is electrically connected the transmitting terminal MCU (12)；The receiving terminal (2) include receiving terminal oscillating circuit (24),
Rectification circuit (25), the load (21) being connected with the output terminal of rectification circuit (25), receiving terminal MCU (22) and modulation circuit
(23)；The modulation circuit (23) includes extra load, when receiving terminal (2) needs to terminate energy transmission, receiving terminal MCU (22)
Extra load in modulation circuit (23) is periodically accessed to the output terminal of rectification circuit (25), when the transmitting terminal (1)
After transmitting terminal MCU (12) detects periodically variable current signal by transmitting terminal sample circuit (11), transmitting terminal MCU (12)
Transmitting terminal (1) is controlled to terminate energy transmission.
A kind of 2. means of communication suitable for wireless charging system according to claim 1, it is characterised in that：The transmission
Hold (1) after the power is turned on, into detection loitering phase, its transmitting terminal MCU (12) is intermittent to send one section of pulse width modulating signal drive
Dynamic inverter circuit (14) work, and curent change is detected by transmitting terminal sample circuit (11) in the process, judge have accordingly
No receiving terminal (2) exists, if judging to have receiving terminal (2) to exist, transmitting terminal (1) enters the energy transmission stage, if judging not having
Receiving terminal (2) exists, then transmitting terminal (1) is maintained at detection loitering phase.
A kind of 3. means of communication suitable for wireless charging system according to claim 1, it is characterised in that：The reception
End (2) further includes receiving terminal sample circuit (26) and output control circuit (27), and the output terminal of the rectification circuit (25) leads to
Cross the receiving terminal sample circuit (26) and output control circuit (27) the connection load (21), the receiving terminal sampling electricity
Road (26) and output control circuit (27) are electrically connected the receiving terminal MCU (22), and receiving terminal MCU (22) passes through the output
Control circuit (27) is supplied to the load (21) after the voltage that rectification circuit (25) exports is handled.
A kind of 4. means of communication suitable for wireless charging system according to claim 3, it is characterised in that：The transmission
End (1), which further includes, sends terminal protecting circuit (15), and the output terminal (2) further includes output terminal protecting circuit (28).
A kind of 5. means of communication suitable for wireless charging system according to claim 1, it is characterised in that：Work as receiving terminal
When MCU (22) detects that the electricity of load (21) in the receiving terminal (2) is full of, receiving terminal MCU (22) periodically will modulation
The output terminal of extra load access rectification circuit (25) in circuit (23).
6. according to a kind of means of communication suitable for wireless charging system of claim 1-5 any one of them, it is characterised in that：
The extra load is resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711266707.7A CN107945490A (en) | 2017-12-05 | 2017-12-05 | A kind of means of communication suitable for wireless charging system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711266707.7A CN107945490A (en) | 2017-12-05 | 2017-12-05 | A kind of means of communication suitable for wireless charging system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107945490A true CN107945490A (en) | 2018-04-20 |
Family
ID=61945695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711266707.7A Pending CN107945490A (en) | 2017-12-05 | 2017-12-05 | A kind of means of communication suitable for wireless charging system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107945490A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020215849A1 (en) * | 2019-04-26 | 2020-10-29 | 华为技术有限公司 | Wireless charging method, receiver, terminal device, and charger |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102007665A (en) * | 2007-10-30 | 2011-04-06 | 香港城市大学 | Localized charging, load identification and bi-directional communication methods for a planar inductive battery charging system |
| CN203434667U (en) * | 2013-08-04 | 2014-02-12 | 深圳市兴龙辉科技有限公司 | Wireless charging RFID communication apparatus |
| CN104734300A (en) * | 2015-04-09 | 2015-06-24 | 扬州大学 | Electric vehicle wireless charging circuit and control method thereof |
| CN105071551A (en) * | 2015-07-28 | 2015-11-18 | 奇瑞汽车股份有限公司 | Wireless energy transmission device |
| CN105305650A (en) * | 2015-11-11 | 2016-02-03 | 安徽华米信息科技有限公司 | Wireless charging method and device, wireless charger and wearable device |
-
2017
- 2017-12-05 CN CN201711266707.7A patent/CN107945490A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102007665A (en) * | 2007-10-30 | 2011-04-06 | 香港城市大学 | Localized charging, load identification and bi-directional communication methods for a planar inductive battery charging system |
| CN203434667U (en) * | 2013-08-04 | 2014-02-12 | 深圳市兴龙辉科技有限公司 | Wireless charging RFID communication apparatus |
| CN104734300A (en) * | 2015-04-09 | 2015-06-24 | 扬州大学 | Electric vehicle wireless charging circuit and control method thereof |
| CN105071551A (en) * | 2015-07-28 | 2015-11-18 | 奇瑞汽车股份有限公司 | Wireless energy transmission device |
| CN105305650A (en) * | 2015-11-11 | 2016-02-03 | 安徽华米信息科技有限公司 | Wireless charging method and device, wireless charger and wearable device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020215849A1 (en) * | 2019-04-26 | 2020-10-29 | 华为技术有限公司 | Wireless charging method, receiver, terminal device, and charger |
| US11699922B2 (en) | 2019-04-26 | 2023-07-11 | Huawei Digital Power Technologies Co., Ltd. | Wireless charging method, receiver, terminal device, and charger |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180420 |
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| RJ01 | Rejection of invention patent application after publication |