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WO2012100439A1 - Système d'alimentation en courant sans fil et identification de charge, et procédé de commande associé - Google Patents

Système d'alimentation en courant sans fil et identification de charge, et procédé de commande associé Download PDF

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Publication number
WO2012100439A1
WO2012100439A1 PCT/CN2011/070823 CN2011070823W WO2012100439A1 WO 2012100439 A1 WO2012100439 A1 WO 2012100439A1 CN 2011070823 W CN2011070823 W CN 2011070823W WO 2012100439 A1 WO2012100439 A1 WO 2012100439A1
Authority
WO
WIPO (PCT)
Prior art keywords
load
power supply
circuit
wireless power
supply system
Prior art date
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.)
Ceased
Application number
PCT/CN2011/070823
Other languages
English (en)
Chinese (zh)
Inventor
李聃
刁德鹏
孙会
张衍昌
党杨涛
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Haier Group Corp
Haier Group Technology Research and Development Center
Original Assignee
Haier Group Corp
Haier Group Technology Research and Development Center
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 Haier Group Corp, Haier Group Technology Research and Development Center filed Critical Haier Group Corp
Priority to PCT/CN2011/070823 priority Critical patent/WO2012100439A1/fr
Priority to CN201180010239.1A priority patent/CN103460553B/zh
Publication of WO2012100439A1 publication Critical patent/WO2012100439A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/005—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting using a power saving mode
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/80—Circuit arrangements or systems for wireless supply or distribution of electric power involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
    • 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
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
    • 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
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/20—End-user application control systems

Definitions

  • the present invention relates to a wireless power supply system for an electrical device and a load identification control method thereof. Background technique
  • the present invention aims to provide a wireless power supply system and a load identification control method thereof.
  • the power transmitting end can set relevant parameters of the power transmitting end by identifying relevant parameters of the load, thereby ensuring power transmission and use efficiency, and Improve the coordination and security of wireless power systems by identifying the effectiveness of the load.
  • this method can achieve ultra-low standby power requirements at the same time.
  • the RFID radio frequency identification module circuit is set on the primary side, and the RFID radio frequency label is set on the secondary side.
  • the RFID radio frequency identification recognizes the load and activates the primary side power supply circuit. This mode is mainly used to effectively reduce standby power consumption when detecting load. ⁇ In this way, the standby power consumption can be reduced to less than 1W.
  • the RFID module stops working.
  • the detection circuit is set on the primary side.
  • the output control signal causes the main control circuit (MCU) to turn off the power supply part to supply power to the inverter circuit, and simultaneously activate the circuit of the radio frequency identification module to enter the working state, and the system enters the standby state.
  • MCU main control circuit
  • a wireless power supply system includes a primary side and a secondary side, and is characterized in that a radio frequency identification module capable of detecting and reading a radio frequency tag is disposed on the primary side, and is connected with the main control circuit to form a control loop, and the secondary side is provided with a radio frequency label for writing related information. .
  • the primary side includes a main control circuit, an inverter circuit, a primary side coil, and a corresponding power supply circuit.
  • the secondary side includes an auxiliary circuit such as a secondary coil and its rectification.
  • the main control circuit controls the inverter circuit to convert the electric energy into high frequency electric power to the primary side coil to form an induced magnetic field, and the secondary side coil in the magnetic field and its rectified auxiliary circuit output power are sent to the load device, and the completion is completed. Power wireless transmission.
  • the radio frequency identification module circuit capable of detecting and reading the radio frequency identification tag is connected with the main control circuit to form a control loop, and the radio frequency tag for writing the relevant information on the secondary side is configured to transmit information with the radio frequency identification module circuit, and the main control circuit is obtained.
  • the relevant information of the load, the control program has a correspondence.
  • the inverter circuit is connected with the detection circuit and the main control circuit to form a control loop.
  • the detection circuit can move or close the secondary load device.
  • the information is passed to the main control circuit.
  • the detection circuit of the present invention uses a comparator circuit in which one input of the comparator receives the reference voltage and the other input the output voltage of the inverter circuit. The output of the comparator is connected to the main control circuit control inlet.
  • the primary side also includes a frequency sampling circuit and a phase locked loop circuit to stabilize the frequency of the inverter circuit.
  • the radio frequency tag includes a device code memory and a user memory, and the load tag information stored in the device code memory is a verification code, and the load tag information stored in the user memory is electrical parameter information of the load.
  • the electrical parameter information includes the input voltage of the load, the input current, the rated power, the type of load, and the frequency.
  • the load identification control method of the wireless power supply system includes: (c), starting The radio frequency identification module continuously detects the secondary side condition; (d) determines whether the secondary side has load label information; (e) acquires the label information if there is load label information; (g) determines whether the load label information is legal (h), if the standard load sign information is legal, determine the electrical parameters of the load; (j) transmit power to the load according to the electrical parameters of the load, and turn off the RFID module; (k), detect the inverter voltage through the comparator Whether it changes; and (1), if the inverter voltage changes, return to step (b).
  • step (f) is further included: if there is no label information, returning to the step
  • step (i) is further included: if the tag information is not legal, returning to step (d).
  • step (m) is further included: if there is no change in the inverter voltage, returning to step (k).
  • step (n) is further performed: the operating frequency of the primary coil is compared, and the sampling frequency is compared with a reference frequency, and the real-time control system is operated according to the comparison result. On the fixed frequency.
  • step (e) includes: (el) obtaining a verification code in the load tag information;
  • step (g) is to compare the verification code in the load tag information with the agreed verification code; if the verification code in the load tag information is the same as the agreed verification code, proceed to step (h), if the load tag information is The verification code is different from the agreed verification code, and then returns to step (d).
  • step (h) includes: (hl), obtaining electrical parameter information of the load; (h2), transmitting the acquired electrical parameter information to the main control circuit; (h3), and the main control circuit parsing according to the preset tag encoding protocol Electrical parameter information; and (h4), determining the electrical parameters of the load based on the analysis result.
  • the invention detects the legality of the load and determines the electrical parameters of the load through the radio frequency identification module, effectively reduces the standby power consumption of the system, and avoids the mis-charging to improve the safety of the system use; the comparator can timely judge the change of the load, so as to The change in load re-adjusts the power transfer parameters.
  • the phase-locked loop tracks the frequency of operation of the inverter circuit to ensure that the system operates at the set frequency.
  • the power supply device of the wireless power supply system provided by the embodiment of the present invention includes a primary side, and is characterized in that The primary side is provided with a radio frequency identification module that can detect and read the radio frequency tag, and is connected with the main control circuit to form a control loop.
  • the load change is judged by the phase-locked loop, which effectively solves the problem of identifying and determining the delay through the RFID module;
  • the system supports multiple loads to work at the same time.
  • the RFID determines the electrical parameters of each load, thereby dynamically changing the power transmission parameters and improving the overall energy efficiency of the system.
  • the validity of the load is judged by the RFID tag, which effectively avoids the mischarge of objects such as coils and metals, and improves the safety of the system.
  • FIG. 1 is a block diagram showing the structure of a wireless power supply system of the present invention.
  • FIG. 2 is an explanatory diagram of a radio frequency identification tag of a load of a wireless power supply system according to an embodiment of the present invention.
  • FIG. 3 is a main flow chart of the operation of the load identification system based on the RFID technology of the present invention.
  • FIG. 4 is a flow chart showing the operation of the load information identification of the present invention.
  • Figure 5 is a schematic diagram of the comparator circuit.
  • FIG. 1 is a block diagram showing the structure of a wireless power supply system according to an embodiment of the present invention.
  • the secondary side of the wireless power supply system can set a load, such as an electronic device 1, an electronic device 2, an electronic device N, where N is greater than or equal to zero.
  • the primary side of the wireless power supply system includes a main control circuit 410, an inverter circuit (ie, a switching circuit) 440, a primary side coil 450, a comparator 460, and a corresponding power supply circuit (including a working power supply of the control part and an operating power supply of the switching circuit) ).
  • the input end of the inverter circuit 440 is connected to the main control circuit 410, and the output end thereof is connected to the primary side coil 450.
  • the radio frequency identification module 420 is disposed on the primary side of the wireless power supply system, and can detect and read the RFID radio frequency tag, and is connected to the main control circuit 410 to form a control loop.
  • the load 200 will be described below as an example.
  • the secondary side of the wireless power supply system is disposed on the load 200 and includes a secondary side coil 210, a power conversion circuit 220, and a radio frequency identification tag 230 storing load information.
  • the RFID tag is, for example, an RFID radio frequency card.
  • the main control circuit 410 controls the inverter circuit 440 to convert the electric energy into a high-frequency electric power to the primary coil 450 to form an induced magnetic field, and the auxiliary circuit output power of the secondary coil 210 and its rectification in the magnetic field is sent to the load device.
  • the main control circuit 410 Since the radio frequency identification module 420 capable of detecting and reading the RFID radio frequency tag is disposed, the main control circuit 410 is connected to form a control loop, and the radio frequency identification tag 230 for writing related information disposed on the secondary side is configured to transmit information with the radio frequency identification module 420.
  • the main control circuit 410 obtains information about the load, and the control program has correspondence.
  • the inverter circuit 440 is connected to the detection circuit 410 to form a control loop.
  • the detection circuit can move the secondary load device.
  • the information that is or is turned off is passed to the main control circuit 440.
  • the detection circuit of the present invention uses a comparator circuit 460, an input of the comparator 460 receives the reference voltage, and the other input the output voltage of the inverter circuit 440.
  • the output of comparator 460 is coupled to main control circuit 410 to control the inlet.
  • the primary side also includes a frequency sampling circuit 470 and a phase locked loop 480 to stabilize the frequency of the inverter circuit 440.
  • FIG. 2 a schematic diagram of the analysis of the RFID tag of the load of the wireless power supply system.
  • the data storage of the RFID tag 230 is divided into a device code memory 232 and a user memory 236.
  • the data stored in the device code memory 232 is a verification code.
  • the data stored in the user memory 236 starts from the first bit and represents the input voltage of the load, Input current, rated power, load type and frequency, where input voltage, input current, rated power and frequency are directly stored as corresponding values.
  • the load type is divided into resistive and inductive, and the corresponding values are 01 and 02 respectively. Passive RF cards can be used.
  • the RFID module 420 In the standby state, the RFID module 420 operates to detect the load. When the load 200 is placed in the range of the primary side coil, the RFID module 420 recognizes the load 200 and activates the primary side circuit. This mode is mainly used to effectively reduce standby power consumption when detecting load. In this way, the standby power consumption can be reduced to less than 1W;
  • the radio frequency identification module 420 stops working
  • the main control circuit 410 activates the radio frequency identification module 420 to enter The working state; at the same time, the power supply part is turned off to supply power to the inverter circuit 440, and enters the standby state.
  • the frequency sampling circuit 470 is connected to the phase locked loop circuit 480.
  • the frequency sampling circuit 470 obtains the operating frequency of the line from the primary side coil 450, and supplies the operating frequency to the phase locked loop circuit 480, the phase locked loop circuit.
  • 480 receives the reference frequency provided by the control circuit 410, and the output end of the phase locked loop 480 is connected to the main control circuit 410, and feeds back the system to the main control circuit 410 according to the comparison result of the reference frequency and the operating frequency sent by the frequency sampling circuit 470.
  • the frequency point of the working of the inverter circuit 440 is tracked to ensure the working at the set frequency, effectively solving the heating problem of the high-power tube and reducing the power consumption.
  • a method for controlling a wireless power supply system includes the following steps: When a power switch of a primary side of a wireless power supply system is turned on, a primary side is in a standby state, and no power is transmitted. Working status, and always check whether there is a load tag; when the load tag is detected, the RFID module first obtains the load tag information, and determines this Whether the tag information is legal information (that is, whether the load is a load supported by the power transmitting module). If it is not legal, the radio frequency identification module re-detects the tag information, and if it is legal, the load tag information is sent to the main control circuit;
  • the main control circuit After receiving the label information, the main control circuit determines the relevant electrical parameters of the load, such as load attributes, operating voltage, power, etc. according to the preset label encoding protocol, and starts power transmission according to the electrical parameters of the load, and stops the radio frequency identification module at the same time. jobs;
  • the phase-locked loop will always monitor the primary coil voltage. If the voltage value changes (indicating that the load is removed or a new load is added), the power transmission is stopped and the RF identification module is restarted;
  • the RFID module will reacquire the tag information to determine if there is a load or to re-adjust the power transfer parameters based on the new load information.
  • the load related information identification process includes the following steps:
  • the radio frequency identification module reads the device code memory of the load tag to obtain the verification code in the load tag, and sends the verification code data to the main control after reading Circuit
  • the main control circuit judges whether the obtained verification code data is the same as the agreed load verification code. If the same, the load is legal, and the load can be normally powered. If it is different, the primary side does not support the load;
  • the main control circuit controls the radio frequency identification module to read the user code memory of the load tag to obtain the load electrical information, and after reading, send the data to the main control circuit, and perform data analysis according to the agreed standard, thereby obtaining load-related electrical Parameters, including input voltage, input current, rated power, load type, frequency;
  • the main control circuit controls the primary side to start the corresponding power transmission according to the load electrical parameters.
  • FIGS. 5 and 6 there are respectively schematic diagrams of a comparator and a phase-locked loop circuit in an embodiment of the present invention.
  • the invention detects the legality of the load and determines the electrical parameters of the load through the radio frequency identification module, effectively reduces the standby power consumption of the system, and avoids the mis-charging to improve the safety of the system use; the comparator can timely judge the change of the load, so as to The change in load re-adjusts the power transfer parameters.
  • the phase-locked loop tracks the frequency of operation of the inverter circuit to ensure that the system operates at the set frequency.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Inverter Devices (AREA)
  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)

Abstract

La présente invention concerne un système d'alimentation en courant sans fil comprenant un côté primaire et un côté secondaire. Un module d'identification à radiofréquence est situé sur le côté primaire, peut détecter et lire une étiquette radiofréquence et est connecté à un circuit de commande principal pour constituer un circuit de commande. L'étiquette radiofréquence sur laquelle sont inscrites les informations associées est située sur le côté secondaire. Une borne d'entrée d'un comparateur est connectée à une tension de référence, l'autre borne d'entrée est connectée à un circuit inverseur pour détecter une tension du circuit, et une borne de sortie du comparateur est connectée au circuit de commande principal. Le fait de détecter si une charge est légale et de déterminer les paramètres électriques de la charge par le module d'identification à radiofréquence permet de réduire efficacement la consommation de courant de secours et d'éviter un chargement effectué par erreur. Les paramètres de transmission électrique sont réajustés par jugement du changement de la charge par le comparateur. L'invention concerne en outre une identification de charge et un procédé de commande du système d'alimentation en courant sans fil.
PCT/CN2011/070823 2011-01-30 2011-01-30 Système d'alimentation en courant sans fil et identification de charge, et procédé de commande associé Ceased WO2012100439A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN2011/070823 WO2012100439A1 (fr) 2011-01-30 2011-01-30 Système d'alimentation en courant sans fil et identification de charge, et procédé de commande associé
CN201180010239.1A CN103460553B (zh) 2011-01-30 2011-01-30 无线供电系统及其负载识别控制方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2011/070823 WO2012100439A1 (fr) 2011-01-30 2011-01-30 Système d'alimentation en courant sans fil et identification de charge, et procédé de commande associé

Publications (1)

Publication Number Publication Date
WO2012100439A1 true WO2012100439A1 (fr) 2012-08-02

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WO (1) WO2012100439A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014176860A1 (fr) * 2013-04-28 2014-11-06 海尔集团技术研发中心 Procédé et dispositif permettant d'identifier une charge valide
CN105553120A (zh) * 2016-02-26 2016-05-04 卢佳龙 手机无线充电器
CN109245512A (zh) * 2018-10-16 2019-01-18 珠海格力电器股份有限公司 一种大功率变频器的控制方法、系统、装置及存储介质
CN110045645A (zh) * 2019-04-16 2019-07-23 重庆科技学院 一种安全用电电气自动控制系统
CN112422362A (zh) * 2020-10-16 2021-02-26 中汽研汽车检验中心（天津）有限公司 无线充电车载端设备的通信协议一致性测试系统与方法
CN113937898A (zh) * 2021-09-29 2022-01-14 广西电网有限责任公司电力科学研究院 一种无线充电系统的双参数辨识方法
CN116566219A (zh) * 2023-07-10 2023-08-08 深圳市嘉力电气技术有限公司 变频电源的频率控制方法
TWI870144B (zh) * 2023-12-06 2025-01-11 亞福儲能股份有限公司 無線供電系統以及用於無線供電系統的操作方法

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US9678120B2 (en) * 2013-12-28 2017-06-13 Intel Corporation Electrical load identification using system line voltage
CN107995712A (zh) * 2017-12-08 2018-05-04 北京弗圣威尔科技有限公司 无线供电加热装置与加热方法及放置物和其制备方法
CN109164732A (zh) * 2018-08-23 2019-01-08 惠州海卓科赛医疗有限公司 一种控制电路系统
CN112737336B (zh) * 2020-12-28 2022-11-22 格力博(江苏)股份有限公司 一种变压模组、充电器、充电系统以及变压控制方法
CN114301152A (zh) * 2021-11-12 2022-04-08 国网浙江省电力有限公司平湖市供电公司 一种应用rfid技术的发电车供电系统
CN114938080A (zh) * 2022-06-09 2022-08-23 珠海格力电器股份有限公司 无线电能传输系统的控制方法、家用电器及存储介质

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014176860A1 (fr) * 2013-04-28 2014-11-06 海尔集团技术研发中心 Procédé et dispositif permettant d'identifier une charge valide
CN105553120A (zh) * 2016-02-26 2016-05-04 卢佳龙 手机无线充电器
CN109245512A (zh) * 2018-10-16 2019-01-18 珠海格力电器股份有限公司 一种大功率变频器的控制方法、系统、装置及存储介质
CN110045645A (zh) * 2019-04-16 2019-07-23 重庆科技学院 一种安全用电电气自动控制系统
CN112422362A (zh) * 2020-10-16 2021-02-26 中汽研汽车检验中心（天津）有限公司 无线充电车载端设备的通信协议一致性测试系统与方法
CN112422362B (zh) * 2020-10-16 2022-12-13 中汽研汽车检验中心（天津）有限公司 无线充电车载端设备的通信协议一致性测试系统与方法
CN113937898A (zh) * 2021-09-29 2022-01-14 广西电网有限责任公司电力科学研究院 一种无线充电系统的双参数辨识方法
CN113937898B (zh) * 2021-09-29 2023-08-25 广西电网有限责任公司电力科学研究院 一种无线充电系统的双参数辨识方法
CN116566219A (zh) * 2023-07-10 2023-08-08 深圳市嘉力电气技术有限公司 变频电源的频率控制方法
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