WO2012100439A1 - Wireless power supply system and load identification and control method thereof - Google Patents

Wireless power supply system and load identification and control method thereof 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
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WO
WIPO (PCT)
Prior art keywords
load
power supply
circuit
wireless power
supply system
Prior art date
Application number
PCT/CN2011/070823
Other languages
French (fr)
Chinese (zh)
Inventor
李聃
刁德鹏
孙会
张衍昌
党杨涛
Original Assignee
海尔集团公司
海尔集团技术研发中心
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 海尔集团公司, 海尔集团技术研发中心 filed Critical 海尔集团公司
Priority to PCT/CN2011/070823 priority Critical patent/WO2012100439A1/en
Priority to CN201180010239.1A priority patent/CN103460553B/en
Publication of WO2012100439A1 publication Critical patent/WO2012100439A1/en

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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

A wireless power supply system comprises a primary side and a secondary side. A radio frequency (RF) identification module is located at the primary side, which can detect and read an RF tag, and is connected with a main control circuit to constitute a control circuit. The RF tag with related information written in it is located at the secondary side. An input terminal of a comparator is connected with a reference voltage, the other input terminal is connected with an inverter circuit to detect a voltage of the circuit, and an output terminal of the comparator is connected with the main control circuit. By means of detecting whether a load is legal and determining electrical parameters of the load by the RF identification module, standby power consumption is effectively reduced and mistakenly charged is avoided. The electric transmission parameters are readjusted by judging the change of the load by the comparator. Furthermore, a load identification and control method of the wireless power supply system is provided.

Description

无线供电***及其负载识别控制方法 技术领域  Wireless power supply system and load identification control method thereof
本发明涉及电气设备的无线供电***及其负载识别控制方法。 背景技术  The present invention relates to a wireless power supply system for an electrical device and a load identification control method thereof. Background technique
随着科技的进步， 无线电力传输技术的应用日益广泛， 人们的生活会变 得更简便轻松， 不再被各式各样的电源线所羁绊。 目前， 已有一些小型电子 装置开始釆用无线供电的方式来充电。 如无线充电器、 无线充电鼠标、 手机 等电子设备可以通过无线供电装置自动充电。  With the advancement of technology, the application of wireless power transmission technology has become more and more widespread, and people's lives will become easier and easier, and will no longer be smashed by various power cords. At present, some small electronic devices have begun to be charged by wireless power. Electronic devices such as wireless chargers, wireless charging mice, and mobile phones can be automatically charged by a wireless power supply.
对于中功率 （数百瓦） 的无线供电***， 由于功率大， 原边（发送端） 与副边（接收端）处于深度耦合同步工作状态， 负载的识别以及控制难度较 大。 比如， 副边突然消失， 原边仍处于工作状态， 会造成***故障。 尤其是 当一个原边面对 N个不同功率的副边时， 原边的识别适应和控制就不容易协 调。 发明内容  For medium-power (hundred watts) wireless power supply systems, due to the high power, the primary side (transmitting end) and the secondary side (receiving end) are in a deep coupled synchronous working state, and the identification and control of the load are difficult. For example, if the secondary side suddenly disappears and the primary side is still in working condition, it will cause system failure. Especially when a primary side faces N sub-edges of different powers, the identification and control of the primary side is not easy to coordinate. Summary of the invention
有鉴于此， 本发明目的在于提供一种无线供电***及其负载识别控制方 法， 使用该方法电源发射端可以通过识别负载的相关参数， 设置电源发射端 相关参数， 保障电源传输及使用效率， 并且通过识别负载的有效性， 提升无 线供电***的协调性和安全性。  In view of the above, the present invention aims to provide a wireless power supply system and a load identification control method thereof. With the method, 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.
另外， 该方法可同时实现超低待机功耗的要求。  In addition, this method can achieve ultra-low standby power requirements at the same time.
本发明的技术方案是：  The technical solution of the present invention is:
在原边设置 RFID射频识别模块电路， 副边设置 RFID射频标签。 当副边 放入原边线圈范围内时， RFID射频识别识别到负载， 启动原边的电源电路。 该模式主要是在检测负载时， 有效地降低待机功耗。 釆用该方式， 待机功耗 可以降到 1W以下， 当电路正常工作时， 射频识别模块停止工作；  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. When the secondary side is placed in the range of the primary side coil, 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.该 In this way, the standby power consumption can be reduced to less than 1W. When the circuit is working normally, the RFID module stops working.
原边设置检测电路。 当副边负载设备移走时， 原边线圈的电流产生变化， 通过与比较器设置的基准电压进行比较， 输出控制信号使主控电路（MCU )关 断电源部分给逆变电路的供电， 同时启动射频识别模块的电路， 使其进入工 作状态， ***进入待机状态。 The detection circuit is set on the primary side. When the secondary load device is removed, the current of the primary coil changes, By comparing with the reference voltage set by the comparator, 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. .
一种无线供电***， 包括原边和副边， 其特征是在原边设置可以探测和 读取射频标签的射频识别模块， 与主控电路相连构成控制回路， 副边设置写 入相关信息的射频标签。  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. .
进一步地， 原边包括主控电路、 逆变电路、 原边线圈以及相应的电源电 路。  Further, the primary side includes a main control circuit, an inverter circuit, a primary side coil, and a corresponding power supply circuit.
进一步地， 副边包括副边线圈及其整流等附属电路。  Further, the secondary side includes an auxiliary circuit such as a secondary coil and its rectification.
进一步地， 工作时主控电路控制逆变电路将电能变成高频电输送到原边 线圈， 形成感应磁场， 磁场中的副边线圈及其整流等附属电路输出电能送到 负载设备中， 完成电力无线传输。  Further, during operation, 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.
由于设置可以探测和读取射频识别标签的射频识别模块电路， 与主控制 电路相连构成控制回路， 副边设置写入相关信息的射频标签一旦与射频识别 模块电路构成信息传送， 主控电路就得到该负载的相关信息， 控制程序就具 有对应性。  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.
为了解决副边负载设备移动或关闭造成的影响， 逆变电路连接一检测电 路与主控电路相连构成控制回路， 当逆变电路的电参数改变， 检测电路可以 将副边负载设备移动或关闭的信息传给主控电路。 本发明的检测电路釆用比 较器电路， 比较器的一输入端接收基准电压， 另一输入逆变电路的输出电压。 比较器的输出端与主控电路控制入口连接。  In order to solve the influence caused by the movement or shutdown of the secondary load device, the inverter circuit is connected with the detection circuit and the main control circuit to form a control loop. When the electrical parameters of the inverter circuit are changed, 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.
另外，原边还包括频率釆样电路和锁相环电路， 以稳定逆变电路的频率。 射频标签包括设备编码存储器和用户存储器， 所述设备编码存储器内存 储的负载标签信息为验证码， 所述用户存储器内存储的负载标签信息为负载 的电气参数信息。 所述电气参数信息包括负载的输入电压、 输入电流、 额定 功率、 负载类型以及频率。  In addition, 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.
本发明实施例提供的无线供电***的负载识别控制方法包括： （c )、启动 射频识别模块以持续检测副边状况； （d)、 判断副边是否存在负载标签信息； (e)、 若有负载标签信息， 则获取该标签信息； （g)、 判断该负载标签信息是 否合法； （h)、 若标负载签信息合法， 则确定负载的电气参数； （j)、 根据负 载的电气参数向负载传输电能， 同时关闭射频识别模块； （k)、通过比较器检 测逆变电压是否变化； 以及（1)、 若逆变电压有变化， 则返回步骤（b)。 The load identification control method of the wireless power supply system provided by the embodiment of the present invention 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).
进一步地， 在步骤（d)后还包括步骤（f ): 若无标签信息， 则返回步骤 Further, after step (d), step (f) is further included: if there is no label information, returning to the step
(d)。 (d).
进一步地， 在步骤（g)后还包括步骤（i): 若标签信息不合法， 则返回 步骤（ d )。  Further, after step (g), step (i) is further included: if the tag information is not legal, returning to step (d).
进一步地， 在步骤（k)后还包括步骤（m): 若逆变电压无变化， 则返回 步骤（ k )。  Further, after step (k), step (m) is further included: if there is no change in the inverter voltage, returning to step (k).
进一步地， 在进行步骤（ j)的同时， 还进行步骤（n): 釆样原边线圈的 工作频率， 并将釆样频率与一基准频率进行比较， 并根据比较结果实时控制 ***工作在设定的频率上。  Further, while performing step (j), 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.
进一步地， 步骤（e) 包括： （el)、 获取负载标签信息中的验证码； 以及 Further, the step (e) includes: (el) obtaining a verification code in the load tag information;
(e2)、 发送获取的验证码到主控电路。 (e2), sending the obtained verification code to the main control circuit.
进一步地，步骤（ g )为将负载标签信息中的验证码与约定的验证码比较； 若负载标签信息中的验证码与约定的验证码相同， 则进行步骤（h), 若负载 标签信息中的验证码与约定的验证码不同， 则返回步骤（d)。  Further, 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).
进一步地， 步骤（h) 包括： （hl)、 获取负载的电气参数信息； （h2)、 发 送获取的电气参数信息到主控电路； （h3)、主控电路根据预设标签编码协议， 解析电气参数信息； 以及 （h4)、 根据解析结果确定负载的电气参数。  Further, the 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.
本发明通过射频识别模块来检测负载是否合法并确定负载的电气参数， 有效降低***待机功耗， 并避免误充电而提升***使用的安全性； 通过比较 器及时地判断负载的变化情况，以便根据负载的变化重新调整电能传输参数。 此外， 还锁相环跟踪逆变电路工作的频率， 保证***工作在设定的频率上。  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. In addition, the phase-locked loop tracks the frequency of operation of the inverter circuit to ensure that the system operates at the set frequency.
本发明实施例提供的无线供电***的供电装置， 包括原边， 其特征是在 原边设置可以探测和读取射频标签的射频识别模块， 与主控电路相连构成控 制回路。 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.
本发明的有益效果：  The beneficial effects of the invention:
1. 通过低功耗 RFID读写器模块， 实现对负载信息的实时检测， 有效的 降低***待机功耗；  1. Real-time detection of load information through low-power RFID reader module, effectively reducing system standby power consumption;
2. 在电能传输过程中， 通过锁相环判断负载变化， 有效的解决了通过 RFID模块识别判断延时的问题；  2. During the power transmission process, 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;
3. 本***支持多负载同时工作， 通过 RFID实现对各负载电气参数的判 断， 从而动态改变电能传输参数， 提升了***整体的能效；  3. 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.
4. 通过 RFID标签判断负载的合法性， 有效的避免了对类似线圈及金属 等物体的误充电， 提升***使用的安全性。  4. 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.
上述说明仅是本发明技术方案的概述， 为了能够更清楚了解本发明的技 术手段， 而可依照说明书的内容予以实施， 并且为了让本发明的上述和其他 目的、 特征和优点能够更明显易懂， 以下特举较佳实施例， 并配合附图， 详 细说明 ^下。 附图概述  The above description is only an overview of the technical solutions of the present invention, and the technical means of the present invention can be more clearly understood, and can be implemented in accordance with the contents of the specification, and the above and other objects, features and advantages of the present invention can be more clearly understood. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments will be described in detail with reference to the accompanying drawings. BRIEF abstract
下面结合附图和实施例对本发明进一步说明。  The invention will now be further described with reference to the drawings and embodiments.
图 1是本发明的无线供电***的结构框图。  1 is a block diagram showing the structure of a wireless power supply system of the present invention.
图 2是本发明一实施例的无线供电***的负载的射频识别标签的解析示 意图。  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.
图 3是本发明基于 RFID技术的负载识别***工作主流程图。  FIG. 3 is a main flow chart of the operation of the load identification system based on the RFID technology of the present invention.
图 4是本发明负载信息识别工作流程图。  4 is a flow chart showing the operation of the load information identification of the present invention.
图 5是比较器电路原理图。  Figure 5 is a schematic diagram of the comparator circuit.
图 6是锁相环电路原理图。 本发明的较佳实施方式 图 1所示为本发明一实施例的无线供电***的结构框图。 该无线供电系 统的副边可设置负载， 如电子设备 1、 电子设备 2 ······电子设备 N, 其中 N大 于等于 0。该无线供电***的原边包括主控电路 410、逆变电路（即开关电路） 440、 原边线圈 450、 比较器 460 , 以及相应的电源电路（包含控制部分的工 作电源和开关电路的工作电源）。逆变电路 440的输入端与主控电路 410连接， 其输出端与原边线圈 450连接。射频识别模块 420设置在无线供电***原边， 可以探测和读取 RFID射频标签，并与主控电路 410相连构成控制回路。 下面 以负载 200为例进行说明。 Figure 6 is a schematic diagram of a phase locked loop circuit. Preferred embodiment of the invention 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.
无线供电***的副边设置在负载 200上， 包括副边线圈 210、 功率转换 电路 220以及存储有负载信息的射频识别标签 230。射频识别标签例如为 RFID 射频卡。  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.
工作时主控电路 410控制逆变电路 440将电能变成高频电输送到原边线 圈 450 , 形成感应磁场， 磁场中的副边线圈 210及其整流等附属电路输出电 能送到负载设备中， 完成电力无线传输。  During operation, 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. Complete power wireless transmission.
由于设置可以探测和读取 RFID射频标签的射频识别模块 420 , 与主控电 路 410相连构成控制回路， 副边设置的写入相关信息的射频识别标签 230— 旦与射频识别模块 420构成信息传送， 主控电路 410就得到该负载的相关信 息， 控制程序就具有对应性。  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.
为了解决副边负载设备移动或关闭造成的影响， 逆变电路 440连接一检 测电路与主控电路 410相连构成控制回路， 当逆变电路 440的电参数改变， 检测电路可以将副边负载设备移动或关闭的信息传给主控电路 440。 本发明 的检测电路釆用比较器电路 460 , 比较器 460的一输入端接收基准电压， 另 一输入逆变电路 440的输出电压。 比较器 460的输出端与主控电路 410控制 入口连接。  In order to solve the influence caused by the movement or shutdown of the secondary load device, the inverter circuit 440 is connected to the detection circuit 410 to form a control loop. When the electrical parameters of the inverter circuit 440 are changed, 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.
另外， 原边还包括频率釆样电路 470、 锁相环 480 , 以稳定逆变电路 440 的频率。  In addition, 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.
如图 2所示， 无线供电***的负载的射频识别标签的解析示意图。 射频识别标签 230的数据存储区分为设备编码存储器 232以及用户存储 器 236 , 设备编码存储器 232 内存储的数据为验证码， 用户存储器 236内存 储的数据从第一位开始， 分别表示负载的输入电压、 输入电流、 额定功率、 负载类型以及频率， 其中输入电压、 输入电流、 额定功率以及频率直接存储 为相应的数值， 负载类型分为阻性和感性两种， 所对应的数值分别为 01 和 02。 可以釆用被动式射频卡。 As shown in 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.
工作过程说明如下。  The working process is explained below.
在待机状态时， 射频识别模块 420工作， 对负载进行检测。 当负载 200 放入原边线圈范围内时， 射频识别模块 420识别到负载 200 , 启动原边的电 路。 该模式主要是在检测负载时， 有效地降低待机功耗。 釆用该方式， 待机 功耗可以降到 1W以下；  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;
当***处于正常工作时， 射频识别模块 420停止工作；  When the system is in normal operation, the radio frequency identification module 420 stops working;
在负载 200移走时， 原边线圈 450的电流产生变化， 通过与比较器 460 设置的基准电压进行比较， 当比较器 460输出发生变化时， 主控电路 410将 启动射频识别模块 420 , 使其进入工作状态； 同时关断电源部分给逆变电路 440的供电， 进入待机状态。  When the load 200 is removed, the current of the primary winding 450 changes, and by comparison with the reference voltage set by the comparator 460, when the output of the comparator 460 changes, 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.
频率釆样电路 470与锁相环电路 480连接， 频率釆样电路 470从原边线 圈 450处釆样电压获取线路的工作频率， 并将该工作频率提供给锁相环电路 480 , 锁相环电路 480接收控制电路 410提供的基准频率， 锁相环 480的输出 端与主控电路 410连接， 并根据基准频率以及频率釆样电路 470送来的工作 频率的比较结果向主控电路 410反馈***的工作频率情况，以对逆变电路 440 工作的频率点进行跟踪， 保证工作在设定的频率上， 有效地解决大功率管子 的发热问题， 降低功耗。  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. In the working frequency situation, 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.
请参看图 3 , 本发明一实施例的无线供电***的控制方法包括如下步骤： 当开启无线供电***的原边的电源开关时， 原边处于待机状态， 无电能 传输， 此时射频识别模块处于工作状态， 并一直检测是否有负载标签存在； 当检测到负载标签时， 射频识别模块首先获取负载标签信息， 并判断此 标签信息是否为合法信息 （即判断该负载是否为电源发射模块所支持的负 载）， 如果不合法， 则射频识别模块重新检测标签信息， 如合法， 则将负载标 签信息发送至主控电路； Referring to FIG. 3, a method for controlling a wireless power supply system according to an embodiment of the present invention 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;
主控电路收到标签信息后， 根据预设标签编码协议， 判断负载的相关电 气参数， 如负载属性、 工作电压、 功率等， 并根据此负载的电气参数开始电 能传输， 并同时停止射频识别模块工作；  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;
在电能传输的时候， 锁相环会一直监控原边线圈电压， 如果此电压值改 变（说明负载被拿走或增加新的负载）， 则停止电能传输， 并重新启动射频识 别模块；  During power transmission, 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;
射频识别模块将重新获取标签信息， 以判断是否存在负载或根据新的负 载信息， 重新调整电能传输参数。  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.
如图 4所示， 本发明一实施例的负载相关信息识别流程包括步骤： 射频识别模块读取负载标签的设备编码存储器获取负载标签中的验证 码， 读取后将验证码数据发送至主控电路；  As shown in FIG. 4, the load related information identification process according to an embodiment of the present invention 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
通过主控电路判断获取的验证码数据与约定的负载验证码是否相同， 如 果相同则说明负载合法， 可以对负载正常供电， 如果不同， 则说明原边不支 持该负载；  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;
如果负载合法， 则主控电路控制射频识别模块读取负载标签的用户编码 存储器以获取负载电气信息， 读取后将数据发送至主控电路， 按照已约定标 准进行数据解析， 从而得到负载相关电气参数， 包括输入电压、 输入电流、 额定功率、 负载类型、 频率；  If the load is legal, 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;
主控电路按照负载电气参数， 控制原边开始相应的电能传输。  The main control circuit controls the primary side to start the corresponding power transmission according to the load electrical parameters.
参见图 5及图 6 , 分别为本发明实施例里的比较器和锁相环电路的原理 图。  Referring to Figures 5 and 6, there are respectively schematic diagrams of a comparator and a phase-locked loop circuit in an embodiment of the present invention.
以上所述， 仅是本发明的较佳实施例而已， 并非对本发明作任何形式上 的限制， 虽然本发明已以较佳实施例揭露如上， 然而并非用以限定本发明， 任何熟悉本专业的技术人员， 在不脱离本发明技术方案范围内， 当可利用上 述揭示的技术内容作出些许更动或修饰为等同变化的等效实施例， 但凡是未 简单修改、 等同变化与修饰， 均仍属于本发明技术方案的范围内。 The above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Although the present invention has been disclosed in the above preferred embodiments, it is not intended to limit the invention, any A skilled person may make some modifications or modifications to equivalent variations using the technical contents disclosed above without departing from the technical scope of the present invention. Simple modifications, equivalent changes and modifications are still within the scope of the technical solutions of the present invention.
工业实用性 Industrial applicability
本发明通过射频识别模块来检测负载是否合法并确定负载的电气参数， 有效降低***待机功耗， 并避免误充电而提升***使用的安全性； 通过比较 器及时地判断负载的变化情况，以便根据负载的变化重新调整电能传输参数。 此外， 还锁相环跟踪逆变电路工作的频率， 保证***工作在设定的频率上。  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. In addition, the phase-locked loop tracks the frequency of operation of the inverter circuit to ensure that the system operates at the set frequency.

Claims

权 利 要 求 书 Claim
1、 一种无线供电***， 包括原边和副边， 其特征是在原边设置可以探测 和读取射频标签的射频识别模块， 与主控电路相连构成控制回路， 副边设置 写入相关信息的射频标签。  1. A wireless power supply system, comprising a primary side and a secondary side, characterized in that a radio frequency identification module capable of detecting and reading a radio frequency tag is disposed on a primary side, and is connected with a main control circuit to form a control loop, and the secondary side is configured to write related information. RF tag.
2、根据权利要求 1所述的无线供电***， 其特征是所述原边包括主控电 路、 逆变电路、 原边线圈。  2. The wireless power supply system according to claim 1, wherein said primary side comprises a main control circuit, an inverter circuit, and a primary side coil.
3、根据权利要求 1所述的无线供电***， 其特征是所述副边包括副边线 圈及其整流电路。  3. A wireless powering system according to claim 1 wherein said secondary side comprises a secondary side coil and its rectifier circuit.
4、根据权利要求 2所述的无线供电***， 其特征是所述逆变电路连接一 检测电路与主控电路相连构成控制回路。  The wireless power supply system according to claim 2, wherein the inverter circuit is connected to a detection circuit and is connected to the main control circuit to form a control loop.
5、根据权利要求 4所述的无线供电***， 其特征是所述检测电路釆用比 较器电路， 比较器的一输入端接收基准电压， 另一输入端接收逆变电路的输 出电压， 比较器的输出端与主控电路连接。  5. The wireless power supply system according to claim 4, wherein said detecting circuit uses a comparator circuit, an input terminal of the comparator receives the reference voltage, and the other input terminal receives the output voltage of the inverter circuit, the comparator The output is connected to the main control circuit.
6、根据权利要求 1所述的无线供电***， 其特征是所述原边还包括以稳 定逆变电路频率的频率釆样电路和锁相环电路。  The wireless power supply system according to claim 1, wherein said primary side further comprises a frequency sampling circuit and a phase locked loop circuit for stabilizing the frequency of the inverter circuit.
7、根据权利要求 1所述的无线供电***， 其特征是所述射频标签包括设 备编码存储器和用户存储器， 所述设备编码存储器内存储的负载标签信息为 验证码， 所述用户存储器内存储的负载标签信息为负载的电气参数信息， 所 述电气参数信息包括负载的输入电压、 输入电流、 额定功率、 负载类型以及 频率。  The wireless power supply system according to claim 1, wherein the radio frequency tag comprises 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 user memory stores The load tag information is electrical parameter information of the load, and the electrical parameter information includes an input voltage of the load, an input current, a rated power, a load type, and a frequency.
8、 一种无线供电***的负载识别控制方法， 包括：  8. A load identification control method for a wireless power supply system, comprising:
( c )、 启动射频识别模块以持续监测副边状况；  (c) Start the RFID module to continuously monitor the secondary side condition;
( d )、 判断副边是否存在负载标签信息；  (d), judging whether there is load tag information on the secondary side;
( e )、 若有负载标签信息， 则获取该标签信息；  (e), if there is load tag information, obtain the tag information;
( g )、 判断该负载标签信息是否合法；  (g) determining whether the load tag information is legal;
( h )、 若负载标签信息合法， 则确定负载的电气参数；  (h), if the load tag information is legal, determine the electrical parameters of the load;
( j )、 根据负载的电气参数向负载传输电能， 同时关闭射频识别模块； (k)、 通过比较器检测逆变电压是否变化； 以及 (j) transmitting electrical energy to the load according to the electrical parameters of the load, and simultaneously turning off the radio frequency identification module; (k) detecting, by the comparator, whether the inverter voltage changes;
( 1)、 若逆变电压有变化， 则返回步骤（c)。  (1) If the inverter voltage changes, return to step (c).
9、根据权利要求 8所述的无线供电***的负载识别控制方法， 其特征在 于： 在步骤（d)后还包括步骤（f ): 若无标签信息， 则返回步骤（d)。  The load identification control method for a wireless power supply system according to claim 8, further comprising: after step (d), including step (f): if there is no label information, returning to step (d).
10、 根据权利要求 8所述的无线供电***的负载识别控制方法， 其特征 在于： 在步骤（g)后还包括步骤（i): 若标签信息不合法， 则返回步骤（d)。  10. The load identification control method of the wireless power supply system according to claim 8, wherein: step (g) further comprises the step (i): if the label information is not legal, returning to step (d).
11、 根据权利要求 8所述的无线供电***的负载识别控制方法， 其特征 在于： 在步骤（k)后还包括步骤（m): 若逆变电压无变化， 则返回步骤（k)。  11. The load identification control method of a wireless power supply system according to claim 8, wherein: step (m) is further included after step (k): if there is no change in the inverter voltage, returning to step (k).
12、 根据权利要求 8所述的无线供电***的负载识别控制方法， 其特征 在于： 在进行步骤（j)的同时， 还进行步骤（n): 釆样原边线圈的工作频率， 并将釆样频率与一基准频率进行比较， 并根据比较结果实时控制***工作在 设定的频率上。  12. The load identification control method of a wireless power supply system according to claim 8, wherein: while performing step (j), performing step (n): sampling the operating frequency of the primary coil, and The sample frequency is compared with a reference frequency, and the system is operated at a set frequency in real time according to the comparison result.
13、 根据权利要求 8所述的无线供电***的负载识别控制方法， 其特征 在于： 步骤（e) 包括：  13. The load identification control method of a wireless power supply system according to claim 8, wherein: step (e) comprises:
(el), 获取负载标签信息中的验证码； 以及  (el), obtaining the verification code in the load tag information;
(e2)、 发送获取的验证码到主控电路。  (e2), sending the obtained verification code to the main control circuit.
14、 根据权利要求 8所述的无线供电***的负载识别控制方法， 其特征 在于： 步骤（g)为将负载标签信息中的验证码与约定的验证码比较； 若负载 标签信息中的验证码与约定的验证码相同， 则进行步骤（h), 若负载标签信 息中的验证码与约定的验证码不同， 则返回步骤（d)。  The load identification control method of the wireless power supply system according to claim 8, wherein: 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 If it is the same as the agreed verification code, step (h) is performed. If the verification code in the payload label information is different from the agreed verification code, the process returns to step (d).
15、 根据权利要求 8所述的无线供电***的负载识别控制方法， 其特征 在于： 步骤（h) 包括：  15. The load identification control method of a wireless power supply system according to claim 8, wherein: step (h) comprises:
(hi), 获取负载的电气参数信息；  (hi), obtaining electrical parameter information of the load;
(h2)、 发送获取的电气参数信息到主控电路；  (h2), sending the acquired electrical parameter information to the main control circuit;
(h3)、 主控电路根据预设标签编码协议， 解析电气参数信息； 以及  (h3), the main control circuit parses the electrical parameter information according to a preset tag encoding protocol;
(h4)、 根据解析结果确定负载的电气参数。  (h4), determining the electrical parameters of the load based on the analysis result.
16、 一种无线供电***的供电装置， 包括原边， 其特征是在原边设置可 以探测和读取射频标签的射频识别模块， 与主控电路相连构成控制回路。16. A power supply device for a wireless power supply system, comprising a primary side, characterized by being disposed on a primary side The radio frequency identification module for detecting and reading the radio frequency tag is connected with the main control circuit to form a control loop.
17、根据权利要求 16所述的供电装置，其特征是所述原边包括主控电路、 逆变电路、 原边线圈。 17. The power supply apparatus according to claim 16, wherein said primary side comprises a main control circuit, an inverter circuit, and a primary side coil.
18、根据权利要求 17所述的供电装置， 其特征是所述逆变电路连接一检 测电路与主控电路相连构成控制回路。  18. The power supply apparatus according to claim 17, wherein said inverter circuit is connected to a detection circuit and connected to the main control circuit to form a control loop.
19、根据权利要求 18所述的供电装置， 其特征是所述检测电路釆用比较 器电路， 比较器的一输入端接收基准电压， 另一输入端接收逆变电路的输出 电压， 比较器的输出端与主控电路连接。  19. The power supply apparatus according to claim 18, wherein said detecting circuit uses a comparator circuit, an input terminal of the comparator receives the reference voltage, and the other input terminal receives the output voltage of the inverter circuit, the comparator The output is connected to the main control circuit.
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