WO2014176837A1 - 多线圈无线电能传输方法及装置 - Google Patents

多线圈无线电能传输方法及装置 Download PDF

Info

Publication number
WO2014176837A1
WO2014176837A1 PCT/CN2013/080768 CN2013080768W WO2014176837A1 WO 2014176837 A1 WO2014176837 A1 WO 2014176837A1 CN 2013080768 W CN2013080768 W CN 2013080768W WO 2014176837 A1 WO2014176837 A1 WO 2014176837A1
Authority
WO
WIPO (PCT)
Prior art keywords
receiving end
unit
resonant
inverter circuit
power
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/CN2013/080768
Other languages
English (en)
French (fr)
Inventor
李聃
孙伟
张从鹏
董秀莲
刘宝
刁德鹏
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
Publication of WO2014176837A1 publication Critical patent/WO2014176837A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; 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
    • H02J50/12—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; 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
    • H02J50/40—Circuit arrangements or systems for wireless supply or distribution of electric power using two or more transmitting or receiving devices
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; 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
    • H02J50/90—Circuit arrangements or systems for wireless supply or distribution of electric power involving detection or optimisation of position, e.g. alignment

Definitions

  • the present invention relates to the field of radio energy technologies, and in particular, to a multi-coil radio energy transmission method and apparatus.
  • the present invention provides a multi-coil radio energy transmission method and apparatus for solving the problem of requiring precise alignment of the positions of the transmitting end and the receiving end in the prior art, and only one-to-one transmission.
  • the embodiment of the present invention is implemented as such, a multi-coil radio energy transmission method, and the method includes:
  • the transmitting end detects whether a receiving end is placed in the power supply area, and if so, continues to step b;
  • step d determining whether the receiving end is legal, and if so, continuing to step d, otherwise, the resonating unit does not transmit electrical energy to the receiving end;
  • the resonant unit is connected to the inverter circuit through a switching circuit, and the inverter circuit adjusts the total output power according to the number of resonant units currently connected, and the resonant unit transmits electrical energy to the receiving end; Wherein, all the resonating units at the transmitting end share an inverter circuit, and the structure and parameter values of each resonating unit are the same.
  • the embodiment of the present invention further provides a multi-coil radio energy transmission device, where the device includes: a receiving end detecting unit, configured to detect whether a receiving end is placed in a power supply area, and if so, perform a polling scanning unit;
  • a polling scanning unit configured to locate a resonating unit corresponding to the receiving end by using a polling scanning mode
  • a receiving end legal determining unit configured to determine whether the receiving end is legal, and if yes, enter a power transmission unit, otherwise, The resonant unit does not transmit electrical energy to the receiving end
  • a power transmission unit configured to connect the resonant unit to an inverter circuit through a switch circuit, the inverter circuit adjusts a total output power according to a number of currently connected resonant units, and the resonant unit transmits power to the receiving end;
  • all the resonating units at the transmitting end share an inverter circuit, and the structure and parameter values of each resonating unit are the same.
  • the invention detects the presence or absence of the receiving end in the power supply area, achieves the purpose of not accurately aligning the transmitting end, collects the voltage and current of each resonant unit by polling, thereby positioning the resonant unit where the receiving end is located, and designing all the resonant units to share one inverse
  • the variable circuit is connected to the inverter circuit through the switch circuit, and the power can be transmitted to the plurality of receiving ends, and the validity of the receiving end is determined by identifying the ID information of the receiving end.
  • FIG. 1 is a flow chart of a multi-coil radio energy transmission method provided in an embodiment of the present invention
  • FIG. 2 is a structural diagram of a multi-coil radio energy transmission apparatus provided in an embodiment of the present invention
  • FIG. 3 is provided in an embodiment of the present invention.
  • the multi-coil radio energy transmission system circuit is composed of a module diagram. detailed description
  • FIG. 1 is a flowchart of a multi-coil radio energy transmission method according to an embodiment of the present invention, which is as follows:
  • step S101 the transmitting end detects whether a receiving end is placed in the power supply area, and if so, executing step S102;
  • the power supply area is an area within a certain range of the resonance unit, and it is not necessary to accurately align each of the resonance units, and the receiving end is detected within a preset range.
  • step S102 the resonating unit corresponding to the receiving end is located in a polling scan mode; in the embodiment of the present invention, the polling scan mode positioning method is adopted, by sampling the voltage or current of each resonating unit, according to The change in the state value of the voltage or current determines that the receiving end is located in the corresponding resonant unit.
  • step S103 it is determined whether the receiving end is legal, and if so, then step S104 is performed, otherwise, step S105 is performed;
  • the receiving end may be a receiving end of the system, or may be a power receiving end of the household appliance.
  • it may also be any material containing a metal material, but for a general metal material, if The power supply causes the transmitter to generate heat, or even burns. Therefore, in the present invention, the legitimacy judgment of the receiving end is increased, thereby improving the security of the wireless power supply, and the ID information of the receiving end can be used to the receiving end. Legitimacy is identified.
  • the transmitting end When the ID signal sent by the receiving end is received within a predetermined time, and the transmitting end recognizes that the ID in the ID signal is a legal ID, the transmitting end performs power transmission. Did not receive the connection within the preset time
  • the ID information sent by the receiving end for example, waiting for the ID signal to time out, etc., can determine that the receiving end of the resonating unit is an illegal receiving end, immediately stop the operation of the resonating unit, and avoid transmitting power to the illegal receiving end. If the ID information sent by the receiving end is received, the ID information is further identified to determine whether the receiving end is legal. If it is determined to be illegal, the operation of the resonating unit is also stopped immediately.
  • step S104 the resonant unit is connected to the inverter circuit through a switching circuit, and the inverter circuit adjusts the total output power according to the number of resonant units currently connected, and the resonant unit transmits electrical energy to the receiving end;
  • the inverter circuit obtains the number of resonant units currently connected, and finds the matched output power from the matching table of the preset number of resonant units and the output power, and adjusts the total output power to the matched output power.
  • the inverter circuit can dynamically adjust the total output power according to the obtained number of currently accessed resonant units, for example, detecting the voltage or current of the resonant unit or the inverter circuit, and comparing with the reference value, according to the difference value. Adjust the total output power.
  • All the resonant units at the transmitting end have a common inverter circuit, which simplifies the complexity of a conventional inverter with one inverter circuit and reduces the cost of the system.
  • Each resonant unit shares a set of inverter circuits.
  • the selection circuit of the resonant unit is connected to the inverter circuit through switch control to generate the required electromagnetic field to emit electrical energy.
  • Each resonant unit consists of an inductive coil and a capacitor in parallel.
  • Each resonant unit has the same inductance value and the same capacitance value, so the resonant frequency value is also the same.
  • the MCU Micro Control Unit When a receiving end is placed in the power supply area, the MCU Micro Control Unit, the control circuit of the MCU Micro Control Unit, the control circuit uses the polling positioning method to determine which resonant unit the receiving end is located, and the system adopts a voltage or current detecting circuit.
  • the preferred identification and control method selects the power transmission of the resonant unit and the operating parameters of the inverter circuit to achieve power transmission control.
  • the receiving end sends the ID information to the transmitting end through the interval time, and the transmitting end can judge the existence state of the receiving end by using the ID information sent by the receiving end, thereby determining whether the resonant unit needs to remain in the working state. If the ID signal sent by the receiver is interrupted, then It is determined that the receiving end has left the power supply area, and the system will stop responding to the work of the transmitting end resonant unit in time, and stop transmitting power to the receiving end to reduce the reactive power output of the system power.
  • the transmitting end stops transmitting power to the receiving end; if all the resonant units of the transmitting end are not working, the system goes to the standby state. .
  • step S105 the resonating unit does not transmit electrical energy to the receiving end.
  • FIG. 2 is a structural diagram of a multi-coil radio energy transmission device according to an embodiment of the present invention, which is described in detail as follows:
  • the receiving end detecting unit 21 is configured to detect whether a receiving end is placed in the power supply area, and if so, to perform a polling scanning unit.
  • the transmitting end detects whether the receiving end is placed in the power supply area, and then enters the resonating unit corresponding to the positioning receiving end of the polling scanning unit, otherwise continues to detect.
  • the polling scanning unit 22 uses the polling scanning mode to locate the resonating unit corresponding to the receiving end.
  • the polling scan mode positioning method by sampling the voltage or current of each resonant unit, it is determined that the receiving end is located at the corresponding resonant unit according to the change of the state value of the voltage or current.
  • the receiving end legal judgment unit 23 judges whether the receiving end is legal, and if so, enters the power transmitting unit, otherwise, the resonant unit does not transmit power to the receiving end.
  • the transmitting end in order to avoid power transmission to the ineffective receiving end, the transmitting end is heated or even burned, the judgment of the legality of the receiving end is increased, and the security of the wireless power supply is improved.
  • the ID of the receiving end is identified by the ID information sent by the receiving end, and the ID signal sent by the receiving end is received within a predetermined time, and the transmitting end recognizes that the ID in the ID signal is a legal ID,
  • the receiving end performs power transmission.
  • the power transmission unit 24 connects the resonance unit to the inverter circuit through a switching circuit, and the inverter circuit adjusts the total output power according to the number of the currently connected resonance units, and the resonance unit transmits the power to the receiving end.
  • all the resonating units at the transmitting end share an inverter circuit, and the structure and parameter values of each resonating unit are the same.
  • the inverter circuit acquires the number of resonant units currently accessed, and finds a matching output power from a matching table of the number of resonant units and output powers preset, and adjusts the total output power to the matched Output Power.
  • All the resonating units at the transmitting end have a common inverter circuit.
  • the selection circuit of the resonating unit is connected to the inverter circuit through the switch control to generate the required electromagnetic field to transmit electric energy.
  • Each resonant unit consists of an inductive coil and a capacitor in parallel.
  • Each resonant unit has the same inductance value and the same capacitance value, so the resonant frequency value is also the same.
  • the ID signal interrupting unit 25 interrupts the ID signal transmitted by the receiving end after the power transmitting unit transmits the power to the receiving end, and the transmitting end stops transmitting power to the receiving end.
  • the receiving end in the process of transmitting the electrical energy to the receiving end, sends the ID information to the transmitting end through the interval, and the transmitting end can determine the existence state of the receiving end by using the ID information sent by the receiving end, thereby determining Whether the resonant unit needs to remain in working state, if the ID signal sent by the receiving end is interrupted, it is determined that the receiving end has left the power supply area, the system will stop responding to the working of the transmitting end resonant unit in time, and stop transmitting power to the receiving end to reduce the system. Reactive output of power.
  • the standby transfer unit 26 power transmission unit after the resonance unit transmits power to the receiving end, the receiving end
  • the transmitting end in the process of transmitting power to the receiving end, if the power transmission end information sent by the receiving end is sent, the transmitting end stops transmitting power to the receiving end; if all the resonant units of the transmitting end are not working, The system goes to standby.
  • FIG. 3 is a schematic diagram of a circuit component module of a multi-coil radio energy transmission system according to an embodiment of the present invention, which is described in detail as follows:
  • the multi-coil radio energy transmission system includes an MCU control circuit, a system trigger circuit, a plurality of resonance units, a full bridge inverter circuit, a voltage current detecting circuit, and a resonance unit selection circuit.
  • the resonant unit selecting circuit determines the resonant unit where the receiving end is located by using a polling scanning positioning method, and the voltage current detecting circuit selects and controls the power transmitting and inverting circuit of the resonant unit by using the identification and control method.
  • the working parameters, or semi-closed loop control mode means that the voltage and current of the resonant unit are collected in real time, and the output power is controlled according to a specific algorithm of power transmission, thereby realizing power transmission control.
  • the circuit module has a common inverter circuit, which simplifies the complexity of each inverter unit in the conventional method, and reduces the cost of the system.
  • Each resonance unit shares a set of inverters.
  • the circuit when there is a resonance unit to work, the resonance unit selection circuit is connected to the full-bridge inverter circuit through the switch control to generate the required electromagnetic field to emit electric energy.
  • the invention detects the presence or absence of the receiving end in the power supply area, achieves the purpose of not accurately aligning the transmitting end, collects the voltage and current of each resonant unit by polling, thereby positioning the resonant unit where the receiving end is located, and designing all the resonant units to share one inverse
  • the variable circuit is connected to the inverter circuit through the switch circuit, and the power can be transmitted to the plurality of receiving ends, and the ID information is recognized by the receiving end to determine the receiving. The effectiveness of the end.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Power Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Near-Field Transmission Systems (AREA)

Abstract

一种多线圈无线电能传输方法及装置。该方法包括：a.发射端检测是否有接收端放入到供电区域，如果有，继续步骤b；b.采用轮询扫描模式定位出接收端对应的谐振单元；c.判断接收端是否合法，如果是，继续步骤d，否则，谐振单元不向接收端传输电能；d通过开关电路将谐振单元接入逆变电路，逆变电路根据当前接入的谐振单元数量调整总的输出功率，谐振单元向接收端传输电能；其中，发射端的全部谐振单元共用一个逆变电路，每个谐振单元的结构和参数相同。该方法不需精确对准发射端，可以定位接收端所在谐振单元，可向多个接收端传输电能并判定接收端的有限性。

Description

多线圈无线电能传输方法及装置
技术领域
本发明涉及无线电能技术领域， 尤其涉及一种多线圈无线电能传输方法及 装置。
背景技术
目前， 在人们日常生活中， 家用电器主要还是通过有线的方式供电， 而采 用有线供电的方式， 必须需要布置线路， 这便会增加使用上的不便利， 且有线 方式需使用插座， 增加电器使用位置的限制。
为了避免有线电力传输所带来的不便， 无线供电技术应用已经开始出现， 采用的技术原理主要是电磁感应式无线电能传输， 但是现有的技术大多数是需 要准确的对准发射端和接收端的位置， 而且是一对一的工作方式， 给用户带来 了不便的体验。
发明内容
本发明提供了一种多线圈无线电能传输方法及装置， 以解决现有技术中需 要精准的对准发射端和接收端的位置， 并且只能一对一传输的问题。
本发明实施例是这样实现的， 一种多线圈无线电能传输方法， 所述方法包 括：
a.发射端检测是否有接收端放入到供电区域， 如果有， 继续歩骤 b ;
b.采用轮询扫描模式定位出所述接收端对应的谐振单元；
c.判断所述接收端是否为合法， 如果是， 继续歩骤 d， 否则， 所述谐振单元 不向所述接收端传输电能；
d.通过开关电路将所述谐振单元接入逆变电路， 逆变电路根据当前接入的 谐振单元数量调整总的输出功率， 所述谐振单元向所述接收端传输电能； 其中， 发射端的全部谐振单元共用一个逆变电路， 每个谐振单元的结构和 参数值相同。
本发明实施例还提供一种多线圈无线电能传输装置， 所述装置包括： 接收端检测单元， 用于发射端检测是否有接收端放入到供电区域， 如果有， 执行轮询扫描单元；
轮询扫描单元，用于采用轮询扫描模式定位出所述接收端对应的谐振单元; 接收端合法判断单元， 用于判断所述接收端是否为合法， 如果是， 进入电 能传输单元， 否则， 所述谐振单元不向所述接收端传输电能；
电能传输单元， 用于通过开关电路将所述谐振单元接入逆变电路， 逆变电 路根据当前接入的谐振单元数量调整总的输出功率， 所述谐振单元向所述接收 端传输电能；
其中， 发射端的全部谐振单元共用一个逆变电路， 每个谐振单元的结构和 参数值相同。
本发明通过在供电区域检测是否有接收端， 达到不需要精准对准发射端的 目的， 通过轮询采集每个谐振单元的电压电流， 从而定位接收端所在谐振单元， 设计将全部谐振单元共用一个逆变电路， 通过开关电路将谐振单元接入逆变电 路， 可达到对多个接收端传输电能， 通过对接收端进行 ID信息识别， 判定接收 端的有效性。
附图说明
图 1是本发明具体实施方式中提供的多线圈无线电能传输方法流程图； 图 2是本发明具体实施方式中提供的多线圈无线电能传输装置结构图； 图 3是本发明具体实施方式中提供的多线圈无线电能传输系统电路组成模 块示意图。 具体实施方式
为了使本发明的目的、 技术方案及优点更加清楚明白， 以下结合附图及实 施例， 对本发明进行进一歩详细说明。 应当理解， 此处所描述的具体实施例仅 仅用以解释本发明， 并不用于限定本发明。
图 1示出了本发明实施例提供的一种多线圈无线电能传输方法流程图， 详 述如下：
在歩骤 S101 中， 发射端检测是否有接收端放入到供电区域， 如果有，则执 行歩骤 S102;
在本发明实施例中， 供电区域为谐振单元所在一定范围内的区域， 不需要 精准的对准每一个谐振单元， 在预设的范围内检测到有接收端即可。
在歩骤 S102中， 采用轮询扫描模式定位出该接收端对应的谐振单元； 在本发明实施例中， 采用轮询扫描模式定位方法， 通过对每个谐振单元的 电压或电流进行采样， 根据电压或电流的状态值变化判断出接收端位于对应的 谐振单元。
在歩骤 S103中， 判断接收端是否为合法， 如果是， 则执行歩骤 S104, 否 则， 执行歩骤 S 105;
在本发明实施例中， 接收端可以是系统配套的接收端， 也可以是家用电器 的供电接收端， 当然， 也有可能是任何含有金属材料的物质， 但对于仅是一般 金属材料物质， 如果对其供电， 会使发射端产生发热， 甚至烧毁等危险， 因此 在本发明中， 增加对接收端的合法性判断， 从而提升无线供电的安全性， 可以 通过对接收端发送的 ID信息来对接收端的合法性进行识别。
在预定的时间内收到接收端发送的 ID信号， 且发射端识别出该 ID信号中 的 ID为合法 ID时， 才对该接收端进行电能传输。 在预设时间内未接收到该接 收端发送的 ID信息， 例如等待 ID信号超时等， 即可判定该谐振单元上的接收 端为非法接收端， 即时停止该谐振单元的工作， 避免向该非法接收端传输电能。 如果接收到该接收端发送的 ID信息， 则对该 ID信息做进一歩的识别， 来判断 该接收端是否合法， 如果判定出不合法， 同样即时停止该谐振单元的工作。
在歩骤 S104中， 通过开关电路将该谐振单元接入逆变电路， 逆变电路根据 当前接入的谐振单元数量调整总的输出功率，该谐振单元向该接收端传输电能; 在本发明实施例中， 逆变电路获取当前接入的谐振单元数量， 从预先设置 的谐振单元数量与输出功率的匹配表中， 找到匹配的输出功率， 把总的输出功 率调整为该匹配的输出功率。 另外， 逆变电路还可以根据所获取的当前接入谐 振单元数量动态地调整总的输出功率， 例如检测谐振单元或逆变电路的电压或 电流， 并与参考值比较， 根据比较的差值来调整总的输出功率。
发射端的全部谐振单元具有一个共用的逆变电路， 简化了常规的每个谐振 配一个逆变电路的复杂性， 同时降低了系统的成本， 各个谐振单元共用一组逆 变电路， 当有谐振需要工作时， 谐振单元的选则电路通过开关控制将其接入逆 变电路中， 产生需要的电磁场发射电能。 每个谐振单元由电感线圈和电容并联 组成， 每个谐振单元的电感值相同， 电容值相同， 因此谐振频率值也相同。 当 有接收端放入供电区域内时， MCU Micro Control Unit,单片机：)控制电路通过谐 振单元选择电路模块采用轮询定位方法进行确定接收端所在哪个谐振单元， 系 统会通过电压或电流检测电路采用优选的识别和控制方法选择控制该谐振单元 的电能发射及逆变电路的工作参数， 从而实现电能的传输控制。
谐振单元向接收端传输电能的过程中， 接收端通过间隔时间发送 ID信息给 发送端， 发送端可以通过接收端发送的 ID信息来判断接收端的存在状态， 从而 可以判定谐振单元是否需要保持工作状态， 如果接收端发送的 ID信号中断， 则 判定该接收端已离开了供电区域，系统将及时停止响应发射端谐振单元的工作， 停止向接收端传输电能， 以降低系统功率的无功输出。
同样， 在谐振单元向接收端传输电能的过程中， 如果接收端发送的电能传 输结束信息， 发射端停止向该接收端传输电能； 如果发射端的全部谐振单元均 没有工作， 则系统转入待机状态。
在歩骤 S 105中， 该谐振单元不向该接收端传输电能。
图 2示出了本发明实施例提供的一种多线圈无线电能传输装置结构图，详述 如下：
接收端检测单元 21用于发射端检测是否有接收端放入到供电区域，如果有， 执行轮询扫描单元。
在本发明实施例中， 发射端检测是否有接收端放入到供电区域， 是则进入 轮询扫描单元定位接收端对应的谐振单元， 否则继续检测。
轮询扫描单元 22采用轮询扫描模式定位出该接收端对应的谐振单元。
在本发明实施例中， 采用轮询扫描模式定位方法， 通过对每个谐振单元的 电压或电流进行采样， 根据电压或电流的状态值变化判断出接收端位于对应的 谐振单元。
接收端合法判断单元 23判断该接收端是否为合法， 如果是， 进入电能传输 单元， 否则， 该谐振单元不向该接收端传输电能。
在本发明实施例中， 为避免对无效的接收端进行电能传输， 造成发射端发 热甚至烧毁的现象， 增加对接收端合法性的判断， 提升无线供电的安全性。
通过对接收端发送的 ID信息来对接收端的合法性进行识别， 在预定的时间 内收到接收端发送的 ID信号， 且发射端识别出该 ID信号中的 ID为合法 ID时， 才 对该接收端进行电能传输。 电能传输单元 24通过开关电路将该谐振单元接入逆变电路， 逆变电路根据 当前接入的谐振单元数量调整总的输出功率，该谐振单元向该接收端传输电能。
其中， 发射端的全部谐振单元共用一个逆变电路， 每个谐振单元的结构和 参数值相同。
在本发明实施例中， 逆变电路获取当前接入的谐振单元数量， 从预先设置 的谐振单元数量与输出功率的匹配表中， 找到匹配的输出功率， 把总的输出功 率调整为该匹配的输出功率。
发射端的全部谐振单元具有一个共用的逆变电路， 当有谐振需要工作时， 谐振单元的选则电路通过开关控制将其接入逆变电路中， 产生需要的电磁场发 射电能。 每个谐振单元由电感线圈和电容并联组成， 每个谐振单元的电感值相 同， 电容值相同， 因此谐振频率值也相同。 当有接收端放入供电区域内时， MCU(Micro Control Unit,单片机)控制电路通过谐振单元选择电路模块采用轮询 定位方法进行确定接收端所在哪个谐振单元， 系统会通过电压或电流检测电路 采用优选的识别和控制方法选择控制该谐振单元的电能发射及逆变电路的工作 参数， 从而实现电能的传输控制。
ID信号中断单元 25在电能传输单元在谐振单元向接收端传输电能之后接收 端发送的 ID信号中断， 发射端停止向该接收端传输电能。
在本发明实施例中， 谐振单元向接收端传输电能的过程中， 接收端通过间 隔时间发送 ID信息给发送端， 发送端可以通过接收端发送的 ID信息来判断接收 端的存在状态， 从而可以判定谐振单元是否需要保持工作状态， 如果接收端发 送的 ID信号中断， 则判定该接收端已离开了供电区域， 系统将及时停止响应发 射端谐振单元的工作， 停止向接收端传输电能， 以降低系统功率的无功输出。
待机转入单元 26电能传输单元在谐振单元向接收端传输电能之后， 接收端 发送的电能传输结束信息， 发射端停止向该接收端传输电能； 如果发射端的全 部谐振单元均没有工作， 则系统转入待机状态。
在本发明实施例中， 在谐振单元向接收端传输电能的过程中， 如果接收端 发送的电能传输结束信息， 发射端停止向该接收端传输电能； 如果发射端的全 部谐振单元均没有工作， 则系统转入待机状态。
图 3示出了本发明实施例提供的一种多线圈无线电能传输系统电路组成模 块示意图， 详述如下：
本发明提供的多线圈无线电能传输系统包括 MCU控制电路、 系统触发电 路、 多个谐振单元、 全桥逆变电路、 电压电流检测电路， 以及谐振单元选择电 路。
当有接收端放入供电区域内时， 谐振单元选择电路采用轮询扫描定位的方 法确定接收端所在谐振单元， 电压电流检测电路采用识别和控制方法选择控制 该谐振单元的电能发射及逆变电路的工作参数， 或者采用半闭环控制方式， 即 实时采集谐振单元的电压、 电流， 根据功率发射的特定算法控制输出功率， 从 而实现电能传输控制。
在本发明实施例中， 电路模块具有一个共用的逆变电路， 简化了常规方法 中每个谐振单元配一个逆变电路的复杂性， 同时降低了系统的成本， 各个谐振 单元共用一组逆变电路， 当有谐振单元需要工作时， 谐振单元选择电路通过开 关控制将其接入全桥逆变电路中， 产生需要的电磁场发射电能。
本发明通过在供电区域检测是否有接收端， 达到不需要精准对准发射端的 目的， 通过轮询采集每个谐振单元的电压电流， 从而定位接收端所在谐振单元， 设计将全部谐振单元共用一个逆变电路， 通过开关电路将谐振单元接入逆变电 路， 可达到对多个接收端传输电能， 通过对接收端进行 ID信息识别， 判定接收 端的有效性。

Claims

WO 2014/176837 权 利 要 求 书 PCT/CN2013/080768
1、 一种多线圈无线电能传输方法， 其特征在于， 所述方法包括：
a.发射端检测是否有接收端放入到供电区域， 如果有， 继续歩骤 b ;
b.采用轮询扫描模式定位出所述接收端对应的谐振单元；
c.判断所述接收端是否为合法， 如果是， 继续歩骤 d， 否则， 所述谐振单元 不向所述接收端传输电能；
d.通过开关电路将所述谐振单元接入逆变电路， 逆变电路根据当前接入的 谐振单元数量调整总的输出功率， 所述谐振单元向所述接收端传输电能；
其中， 发射端的全部谐振单元共用一个逆变电路， 每个谐振单元的结构和 参数值相同。
2、 如权利要求 1所述的方法， 其特征在于， 所述采用轮询扫描模式定位出 所述接收端对应的谐振单元具体为：
对每个谐振单元的电压或电流进行采样， 根据电压或电流的状态值变化判 断出所述接收端位于对应的谐振单元。
3、 如权利要求 1所述的方法， 其特征在于， 所述判断所述接收端是否为合 法， 如果是， 继续歩骤 d， 具体为：
在预定的时间内收到接收端发送的 ID信号， 且发射端识别出所述 ID信号 中的 ID为合法 ID, 则继续歩骤 d。
4、 如权利要求 1所述的方法， 其特征在于， 所述逆变电路根据当前接入的 谐振单元数量调整总的输出功率具体为：
逆变电路获取当前接入的谐振单元数量， 从预先设置的谐振单元数量与输 出功率的匹配表中， 找到匹配的输出功率， 把总的输出功率调整为该匹配的输 出功率。
5、 如权利要求 1所述的方法， 其特征在于， 所述逆变电路根据当前接入的 谐振单元数量调整总的输出功率包括：
逆变电路检测谐振单元或逆变电路的电压或电流， 并与参考值比较， 根据 比较的差值来调整总的输出功率。
6、 如权利要求 1所述的方法， 其特征在于， 所述谐振单元向所述接收端传 输电能之后， 还包括：
接收端发送的 ID信号中断， 发射端停止向所述接收端传输电能。
7、 如权利要求 1所述的方法， 其特征在于， 所述谐振单元向所述接收端传 输电能之后， 还包括：
接收端发送的电能传输结束信息， 发射端停止向所述接收端传输电能； 如 果发射端的全部谐振单元均没有工作， 则系统转入待机状态。
8、 一种多线圈无线电能传输装置， 其特征在于， 所述装置包括：
接收端检测单元， 用于发射端检测是否有接收端放入到供电区域， 如果有， 执行轮询扫描单元；
轮询扫描单元，用于采用轮询扫描模式定位出所述接收端对应的谐振单元; 接收端合法判断单元， 用于判断所述接收端是否为合法， 如果是， 进入电 能传输单元， 否则， 所述谐振单元不向所述接收端传输电能；
电能传输单元， 用于通过开关电路将所述谐振单元接入逆变电路， 逆变电 路根据当前接入的谐振单元数量调整总的输出功率， 所述谐振单元向所述接收 端传输电能；
其中， 发射端的全部谐振单元共用一个逆变电路， 每个谐振单元的结构和 参数值相同。
9、 如权利要求 8所述的装置， 其特征在于， 所述采用轮询扫描模式定位出 所述接收端对应的谐振单元具体为： 对每个谐振单元的电压或电流进行采样， 根据电压或电流的状态值变化判断出所述接收端位于对应的谐振单元； 所述判断所述接收端是否为合法， 如果是， 进入电能传输单元具体为： 在 预定的时间内收到接收端发送的 ID信号， 且发射端识别出所述 ID信号中的 ID 为合法 ID, 则进入电能传输单元；
所述逆变电路根据当前接入的谐振单元数量调整总的输出功率具体为： 逆 变电路获取当前接入的谐振单元数量， 从预先设置的谐振单元数量与输出功率 的匹配表中， 找到匹配的输出功率， 把总的输出功率调整为该匹配的输出功率。
10、 如权利要求 8所述的装置， 其特征在于， 所述装置还包括：
ID信号中断单元， 用于在电能传输单元在所述谐振单元向所述接收端传输 电能之后接收端发送的 ID信号中断， 发射端停止向所述接收端传输电能。
11、 如权利要求 8所述的装置， 其特征在于， 所述装置还包括：
待机转入单元， 用于电能传输单元在所述谐振单元向所述接收端传输电能 之后， 接收端发送的电能传输结束信息， 发射端停止向所述接收端传输电能； 如果发射端的全部谐振单元均没有工作， 则系统转入待机状态。
PCT/CN2013/080768 2013-04-28 2013-08-02 多线圈无线电能传输方法及装置 Ceased WO2014176837A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201310156890.0 2013-04-28
CN201310156890.0A CN104124771A (zh) 2013-04-28 2013-04-28 多线圈无线电能传输方法及装置

Publications (1)

Publication Number Publication Date
WO2014176837A1 true WO2014176837A1 (zh) 2014-11-06

Family

ID=51770082

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2013/080768 Ceased WO2014176837A1 (zh) 2013-04-28 2013-08-02 多线圈无线电能传输方法及装置

Country Status (2)

Country Link
CN (1) CN104124771A (zh)
WO (1) WO2014176837A1 (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107124046A (zh) * 2017-06-27 2017-09-01 青岛鲁渝能源科技有限公司 具有活体检测功能的无线充电系统及无线充电方法
CN107623549A (zh) * 2016-07-15 2018-01-23 深圳光启高等理工研究院 无线光通信系统

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105896748B (zh) * 2016-04-26 2019-02-26 中国科学技术大学 辐射式无线电能传输系统中多个接收端调度方法
CN106230054B (zh) * 2016-08-15 2019-02-05 镇江博联电子科技有限公司 一种无线充电发射端装置
CN111752332B (zh) * 2020-06-29 2022-04-22 广东美的厨房电器制造有限公司 输入装置和家用电器

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101335470A (zh) * 2007-06-29 2008-12-31 精工爱普生株式会社 送电控制装置、送电装置、无触点电力传输系统及电子设备
CN101771283A (zh) * 2008-12-29 2010-07-07 鸿富锦精密工业（深圳）有限公司 充电系统
CN102611213A (zh) * 2012-03-31 2012-07-25 刘开磊 面向多终端的无线供电系统及方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7262700B2 (en) * 2005-03-10 2007-08-28 Microsoft Corporation Inductive powering surface for powering portable devices
CA2757623A1 (en) * 2009-04-08 2010-10-14 Access Business Group International Llc Selectable coil array

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101335470A (zh) * 2007-06-29 2008-12-31 精工爱普生株式会社 送电控制装置、送电装置、无触点电力传输系统及电子设备
CN101771283A (zh) * 2008-12-29 2010-07-07 鸿富锦精密工业（深圳）有限公司 充电系统
CN102611213A (zh) * 2012-03-31 2012-07-25 刘开磊 面向多终端的无线供电系统及方法

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107623549A (zh) * 2016-07-15 2018-01-23 深圳光启高等理工研究院 无线光通信系统
CN107124046A (zh) * 2017-06-27 2017-09-01 青岛鲁渝能源科技有限公司 具有活体检测功能的无线充电系统及无线充电方法
CN107124046B (zh) * 2017-06-27 2023-08-22 青岛鲁渝能源科技有限公司 具有活体检测功能的无线充电系统及无线充电方法

Also Published As

Publication number Publication date
CN104124771A (zh) 2014-10-29

Similar Documents

Publication Publication Date Title
US12500457B2 (en) Wireless power transmission method and device therefor
US11451094B2 (en) Wireless inductive power transfer
EP3745558B9 (en) Device and method for performing power correction in wireless power transmission system
CN106165250B (zh) 无线电力发送器以及无线电力发送方法
JP6336049B2 (ja) 無線誘導電力伝送
EP3297123A1 (en) Wireless power transmission method, wireless power reception method, and apparatus therefor
US10523062B2 (en) Multi-mode wireless power transmission method and device for same
US10608472B2 (en) Wireless power transmission device, wireless power reception device, and wireless charging system
US20190148987A1 (en) Wireless power transmission method and device therefor
WO2014176837A1 (zh) 多线圈无线电能传输方法及装置
KR102154306B1 (ko) 동시 멀티 충전이 가능한 무선 전력 전송 장치
KR20170127885A (ko) 무선 충전 방법 및 그를 위한 장치 및 시스템
TW202133531A (zh) 無線電力發射器、無線電力接收器及其運行方法
CN104597356A (zh) 用于烹饪器具的锅具检测方法及检测装置
KR101241712B1 (ko) 무선 전력 수신 장치 및 그 방법
EP3297124A1 (en) Wireless power transmission apparatus and control method therefor, method for controlling wireless power reception apparatus, and wireless power transmission system and wireless power transmission method therefor
KR20200068555A (ko) 무선전력 전송 시스템에서 인증을 수행하는 방법 및 이를 수행하는 장치
KR102312096B1 (ko) 무선 전력 전송방법, 무선 전력 전송장치 및 무선 충전 시스템
CN107342635B (zh) 无线能量传输系统的谐振频率控制方法
CN105305642B (zh) 无线能量传输装置及该种装置的谐振频率控制方法
KR101847654B1 (ko) 충전 대상 단말을 인증하기 위한 무선 충전 장치 및 그 방법
TW202610173A (zh) 無線電力轉移
KR101773092B1 (ko) 무선 전력 전송 방법 및 이를 위한 장치
TW202304104A (zh) 供電模組、受電模組及其通訊方法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 13883724

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 13883724

Country of ref document: EP

Kind code of ref document: A1