CN203434667U - Wireless charging RFID communication apparatus - Google Patents
Wireless charging RFID communication apparatus Download PDFInfo
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- CN203434667U CN203434667U CN201320470095.4U CN201320470095U CN203434667U CN 203434667 U CN203434667 U CN 203434667U CN 201320470095 U CN201320470095 U CN 201320470095U CN 203434667 U CN203434667 U CN 203434667U
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Abstract
The utility model relates to a wireless charging RFID communication apparatus. A transmitting terminal is composed of AC-DC conversion, full bridge and power driving, LC resonance T network, T controller, T sampling, and communication demodulation modules, etc.; a receiving terminal is composed of LC resonance R network, communication modulation, rectification, R controller, R sampling, charging switch and cell modules, etc. The LC resonance T network and the LC resonance R network transmit energy through electromagnetic coupling. According to the scheme, the communication modulation module of the receiving terminal is composed of two or more than two paths of communication modulation load circuits and communication modulation control switches. For communication, the R controller transmits two or more than two paths of control signals to the communication modulation control switches and asynchronously controls the two or more than two paths of communication modulation load circuits, thereby realizing communication. The wireless charging RFID communication apparatus solves the problem that in prior arts, a single communication modulation load circuit may lead to communication failure in charging under certain conditions, and greatly raises the communication stability.
Description
Technical field
The utility model relates to a kind of device of communicating by letter with receiving terminal RFID for wireless charging transmitting terminal.
Background technology
In existing conventional wireless charging technology, electric power transfer is to complete between electric power transmitting terminal and the coil of electric power receiving terminal.Generally, in order to realize constant pressure and flow function, between electric power transmitting terminal and electric power receiving terminal, need to feed back output voltage and electric current by communication.Communication in prior art between electric power transmitting terminal and electric power receiving terminal generally adopts load-modulate to realize, thereby as adopt short time access resistance, electric capacity or an inductance output impedance of system to be produced to the temporary change of a short time, thereby have influence on the voltage on electric power transmitting terminal coil, then by demodulator circuit, this voltage demodulation out can be obtained to signal of communication.
In wireless charging, relative position between electric power transmitting terminal and electric power receiving terminal can move at random, and output voltage or output current are likely and change with the charging interval, so operating frequency of whole charging system, the duty ratio of switching tube also can be followed variation, if adopt the method for single load-modulate to communicate, in some operating frequency point or some duty ratio, thereby the impedance due to the impedance of access during load and while not connecing load approaches and causes load-modulate inefficacy, communication cannot be identified, thereby system cannot be fed back and lose efficacy.
Summary of the invention
The purpose of this utility model is to provide a kind of wireless charging RFID communicator.
A kind of wireless charging RFID communicator described in the utility model, is comprised of transmitting terminal and receiving terminal two large divisions, and transmitting terminal is comprised of modules such as AC-DC conversion, full-bridge and power drive, LC resonance T network, T controller, T sampling, communication demodulation; Receiving terminal is comprised of modules such as LC resonance R network, communication modulation, rectification, R controller, R sampling, charge switch, batteries; LC resonance T network and LC resonance R network be by electromagnetic coupled transferring energy, then through rectification module, charge switch module to charging battery module.
Described a kind of wireless charging RFID communicator, receiving terminal communication modulation module is comprised of two-way or multichannel communication modulation load circuit and the modulation control switch of communicating by letter.
Transmitting terminal AC-DC modular converter is connected to LC resonance T network by full-bridge and power driver module, and pass through LC resonance T network delivery energy to receiving terminal LC resonance R network, transmitting terminal T controller module by T sampling module to the monitoring of sampling of LC resonance T network, by communication demodulation module, the voltage signal of LC resonance T network is carried out to demodulation simultaneously and obtain communication data, and control full-bridge and power driver module according to current working condition.
Receiving terminal LC resonance R network is connected to battery by rectification module and charge switch; R controller module to the battery monitoring of sampling, and is controlled charge switch according to working condition by R sampling module; Communication modulation switch A modulates A module by communication and is connected to LC resonance R network, and communication modulation switch B modulates B module by communication and is connected to LC resonance R network; Communication modulation switch A is controlled by R controller module with the modulation switch B that communicate by letter, and R controller module is controlled opening to realize and communication is modulated to A module modulating B module and modulate not accessing in the same time LC resonance R network with communicating by letter of communicate by letter modulation switch A and the modulation switch B that communicates by letter by asynchronous alternate.
accompanying drawing explanation:
Fig. 1 is the utility model transmitting terminal and receiving terminal topological diagram.
Fig. 2 is the utility model two-way communication modulation load circuit embodiments figure.
Fig. 3 is voltage control oscillogram.
Fig. 4 is the utility model finished product outline drawing.
embodiment:
Now with example, the utility model is described in further detail by reference to the accompanying drawings.
Receiving terminal of the present utility model is comprised of modules such as LC resonance R network, communication modulation, rectification, R controller, R sampling, charge switch, batteries.Communication modulation module comprises that communication modulation A load circuit, communication modulation B load circuit, communication modulation switch A, communication modulation switch B form.One end of LC resonance R network is modulated A load circuit by communication and is connected to communication modulation switch A, and the other end is modulated B load circuit by communication and is connected to communication modulation switch B, and communication control circuit is used for controlling communication modulation switch A and B.Communication is modulated A load circuit and is independently communicated by letter and modulate A module with the modulation switch A Wei Yi road of communicating by letter, and communication modulation B load circuit is independently communicated by letter and modulated B module for another road with the modulation switch B that communicates by letter.When needs are realized communication, by the asynchronous control communication of communication control circuit, modulate A module and the modulation B module of communicating by letter, thereby reach the object of communication.
In Fig. 2, L1 is receiving terminal resonant inductance, and C1 is resonant capacitance, and L1 and C1 form LC resonance R network; D1, D2, D3, D4 form rectification module; D5, R1, Q1 form communication modulation A load circuit; C2, Q2 form communication modulation B load circuit; Q1 is communication modulation switch A; Q2 is communication modulation switch B; Control signal A and control signal B are from R controller module.
Communication realizes by the voltage waveform on modulation LC resonance R network:
When t1 constantly need to transmit data, control signal A is open-minded, and communication modulation A load circuit is started working and transmits communication data, turn-offs control signal A and the modulation A load circuit of communicating by letter after data transmission;
Wait for a period of time after △ t at moment t2=t1+ △ t, in the time of need to again transmitting data, control signal B is open-minded, and communication modulation B load circuit is started working and transmits communication data, turn-offs control signal B and communicate by letter and modulate B load circuit after data transmission;
At moment t3=t2+ △ t, in the time of need to again transmitting data, control signal A is open-minded, and communication modulation A load circuit is started working and transmits communication data, turn-offs control signal A and the modulation A load circuit of communicating by letter after data transmission;
At moment t4=t3+ △ t, in the time of need to again transmitting data, control signal B is open-minded, and communication modulation B load circuit is started working and transmits communication data, turn-offs control signal B and the modulation B load circuit of communicating by letter after data transmission;
Repeat above process.
Claims (1)
1. a wireless charging RFID communicator, is characterized in that, transmitting terminal and receiving terminal two large divisions, consists of, and transmitting terminal is comprised of modules such as AC-DC conversion, full-bridge and power drive, LC resonance T network, T controller, T sampling, communication demodulation; Receiving terminal is comprised of modules such as LC resonance R network, communication modulation, rectification, R controller, R sampling, charge switch, batteries; LC resonance T network and LC resonance R network be by electromagnetic coupled transferring energy, then through rectification module, charge switch module to charging battery module.
2.a kind of wireless charging RFID communicator as claimed in claim 1, is characterized in that, receiving terminal communication modulation module is comprised of two-way or multichannel communication modulation load circuit and the modulation control switch of communicating by letter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320470095.4U CN203434667U (en) | 2013-08-04 | 2013-08-04 | Wireless charging RFID communication apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320470095.4U CN203434667U (en) | 2013-08-04 | 2013-08-04 | Wireless charging RFID communication apparatus |
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| Publication Number | Publication Date |
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| CN203434667U true CN203434667U (en) | 2014-02-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320470095.4U Expired - Fee Related CN203434667U (en) | 2013-08-04 | 2013-08-04 | Wireless charging RFID communication apparatus |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107945490A (en) * | 2017-12-05 | 2018-04-20 | 无锡市瀚为科技有限公司 | A kind of means of communication suitable for wireless charging system |
| CN107994657A (en) * | 2018-01-04 | 2018-05-04 | 无锡市瀚为科技有限公司 | A kind of switching signal production method suitable for wireless charging system |
| CN109391290A (en) * | 2017-08-09 | 2019-02-26 | 佛山市顺德区美的电热电器制造有限公司 | A kind of communication means, device and equipment |
| WO2019080212A1 (en) * | 2017-10-24 | 2019-05-02 | 佛山市顺德区美的电热电器制造有限公司 | Overcurrent and overvoltage protection circuit, electromagnetic induction type wireless power supply system and cooking appliance |
| WO2020125428A1 (en) * | 2018-12-20 | 2020-06-25 | 广东美的白色家电技术创新中心有限公司 | Electronic device, wireless power transmission receiver circuit, communication method, and wireless power transmission system |
| CN111384934A (en) * | 2020-05-29 | 2020-07-07 | 成都市易冲半导体有限公司 | Zero-voltage asynchronous control method and circuit for load modulation switch of wireless charging receiving end |
-
2013
- 2013-08-04 CN CN201320470095.4U patent/CN203434667U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109391290A (en) * | 2017-08-09 | 2019-02-26 | 佛山市顺德区美的电热电器制造有限公司 | A kind of communication means, device and equipment |
| WO2019080212A1 (en) * | 2017-10-24 | 2019-05-02 | 佛山市顺德区美的电热电器制造有限公司 | Overcurrent and overvoltage protection circuit, electromagnetic induction type wireless power supply system and cooking appliance |
| US11217990B2 (en) | 2017-10-24 | 2022-01-04 | Foshan Shunde Midea Electrical Heating Appliances Manufacturing Co., Ltd. | Overcurrent and overvoltage protection circuit, electromagnetic induction type wireless power supply system and cooking appliance |
| CN107945490A (en) * | 2017-12-05 | 2018-04-20 | 无锡市瀚为科技有限公司 | A kind of means of communication suitable for wireless charging system |
| CN107994657A (en) * | 2018-01-04 | 2018-05-04 | 无锡市瀚为科技有限公司 | A kind of switching signal production method suitable for wireless charging system |
| WO2020125428A1 (en) * | 2018-12-20 | 2020-06-25 | 广东美的白色家电技术创新中心有限公司 | Electronic device, wireless power transmission receiver circuit, communication method, and wireless power transmission system |
| US11909229B2 (en) | 2018-12-20 | 2024-02-20 | Guangdong Midea White Home Appliance Technology Innovation Center Co., Ltd. | Wireless power transmission receiving circuit, communication method, and wireless power transmission system |
| CN111384934A (en) * | 2020-05-29 | 2020-07-07 | 成都市易冲半导体有限公司 | Zero-voltage asynchronous control method and circuit for load modulation switch of wireless charging receiving end |
| CN111384934B (en) * | 2020-05-29 | 2020-08-25 | 成都市易冲半导体有限公司 | Zero-voltage asynchronous control method and circuit for load modulation switch of wireless charging receiving end |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140212 Termination date: 20160804 |
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| CF01 | Termination of patent right due to non-payment of annual fee |