CN104600877A - Wireless power transmission device with sidesway adaptability and rotation adaptability - Google Patents
Wireless power transmission device with sidesway adaptability and rotation adaptability Download PDFInfo
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Abstract
一种具有侧移适应性和旋转适应性的无线电能传输装置，属于无线电能传输技术领域，本发明为解决现有无线电能传输技术受到接收端位置角度等限制传输性能较低的问题。本发明包括能量发射装置和多个能量接收装置，能量发射装置包括直流电源、高频电源、能量激励线圈、能量发射线圈和发射端谐振电容，每个能量接收装置均包括能量接收线圈、接收端谐振电容、负载线圈和能量处理电路，能量发射线圈和能量接收线圈均包括三个平面式线圈，三个平面式线圈的空间所在平面两两正交；高频电源产生的交变电流工作频率、发射端谐振腔体的固有频率和接收端谐振腔体的固有频率相同。本发明用于人体植入设备、便携式移动设备以及无线传感器网络节点的能量供给。
A wireless power transmission device with side shift adaptability and rotation adaptability belongs to the technical field of wireless power transmission. The present invention solves the problem that the existing wireless power transmission technology is limited by the position angle of the receiving end and has low transmission performance. The present invention includes an energy transmitting device and a plurality of energy receiving devices. The energy transmitting device includes a DC power supply, a high-frequency power supply, an energy excitation coil, an energy transmitting coil and a resonant capacitor at a transmitting end. Each energy receiving device includes an energy receiving coil, a receiving end The resonant capacitor, the load coil and the energy processing circuit, the energy transmitting coil and the energy receiving coil both include three planar coils, and the spaces of the three planar coils are located in two orthogonal planes; the alternating current operating frequency generated by the high-frequency power supply, The natural frequency of the resonant cavity at the transmitting end is the same as the natural frequency of the resonant cavity at the receiving end. The invention is used for energy supply of human body implant equipment, portable mobile equipment and wireless sensor network nodes.
Description
技术领域technical field
本发明属于无线电能传输技术领域。The invention belongs to the technical field of wireless power transmission.
背景技术Background technique
无线电能传输技术是通过非实体介质实现电能传输的一种新型电能技术，而磁耦合谐振式无线电能传输技术最早由MIT的科研小组提出并通过实验装置实现，同时成功点亮两米处的60W的灯泡。这种技术受到越来越多的学者重视，为实现远程中小功率设备供电成为了可能。Wireless power transmission technology is a new type of power technology that realizes power transmission through non-physical media, and the magnetic coupling resonant wireless power transmission technology was first proposed by a research team at MIT and realized through an experimental device. light bulb. This technology has been valued by more and more scholars, and it has become possible to realize the power supply of long-distance small and medium power devices.
无线电能传输方式一般分为三种：电磁波式无线电能传输、磁场感应式无线电能传输和磁耦合共振式无线电能传输技术。对于第三种传输方式，现有的磁耦合谐振式无线电能传输技术对传输系统的发射端和接收端之间大多以平面直绕式线圈为主，其对线圈之间的相对位置要求比较苛刻，并且接收端自身的角度变化也会影响电能的传输效果，因此成为了这一技术的进一步应用的障碍。Wireless power transmission methods are generally divided into three types: electromagnetic wave wireless power transmission, magnetic field induction wireless power transmission and magnetic coupling resonance wireless power transmission technology. For the third transmission mode, the existing magnetic coupling resonant wireless power transmission technology mostly uses planar direct-wound coils between the transmitting end and the receiving end of the transmission system, and its requirements for the relative position of the coils are relatively strict. , and the angle change of the receiving end itself will also affect the transmission effect of electric energy, so it becomes an obstacle to the further application of this technology.
发明内容Contents of the invention
本发明目的是为了解决现有无线电能传输技术受到接收端位置角度等限制传输性能较低的问题，提供了一种具有侧移适应性和旋转适应性的无线电能传输装置。The purpose of the present invention is to solve the problem that the existing wireless power transmission technology is limited by the position and angle of the receiving end, and the transmission performance is low, and to provide a wireless power transmission device with side shift adaptability and rotation adaptability.
本发明所述一种具有侧移适应性和旋转适应性的无线电能传输装置，它包括能量发射装置和多个能量接收装置；能量发射装置将电能转换为高频的变化磁场，多个能量接收装置将空间中接收到的磁场转换为电能然后为负载充电；接收端与发射端之间的相对位置能够自由变化；A wireless energy transmission device with side shift adaptability and rotation adaptability described in the present invention includes an energy transmitting device and a plurality of energy receiving devices; the energy transmitting device converts electric energy into a high-frequency changing magnetic field, and a plurality of energy receiving devices The device converts the magnetic field received in space into electrical energy and then charges the load; the relative position between the receiving end and the transmitting end can be changed freely;
所述能量发射装置包括直流电源、高频电源、能量激励线圈、能量发射线圈和发射端谐振电容，直流电源将电流输出至高频电源，高频电源将直流电转换成高频形式的交变电流，然后将高频形式的交变电流输出至能量激励线圈，能量激励线圈在空间中形成初级磁场，并为能量发射线圈提供磁场形式的能量，能量发射线圈和发射端谐振电容构成发射端谐振腔体，在初级磁场的激励下发生谐振，产生用于电能传输的磁场能量；The energy transmitting device includes a DC power supply, a high-frequency power supply, an energy excitation coil, an energy transmitting coil and a resonant capacitor at the transmitting end, the DC power supply outputs current to the high-frequency power supply, and the high-frequency power supply converts the DC power into a high-frequency alternating current , and then output the alternating current in the form of high frequency to the energy excitation coil, the energy excitation coil forms a primary magnetic field in space, and provides energy in the form of a magnetic field for the energy transmitting coil, and the energy transmitting coil and the transmitting end resonant capacitor form the transmitting end resonant cavity The body resonates under the excitation of the primary magnetic field to generate magnetic field energy for power transmission;
所述能量发射线圈包括三个平面式线圈，三个平面式线圈的空间所在平面两两正交；The energy transmitting coil includes three planar coils, and the planes where the spaces of the three planar coils are located are orthogonal to each other;
每个能量接收装置均包括能量接收线圈、接收端谐振电容、负载线圈和能量处理电路，能量接收线圈和接收端谐振电容构成接收端谐振腔体，接收端谐振腔体在磁场能量的作用下产生共振，在能量接收线圈中产生共振磁场，负载线圈在共振磁场内以感应电流的形式接收磁场能量，负载线圈与能量处理电路相连接，能量处理电路根据负载将负载线圈中的磁场能量进行转换，实现对负载充电；Each energy receiving device includes an energy receiving coil, a receiving end resonant capacitor, a load coil and an energy processing circuit. The energy receiving coil and the receiving end resonant capacitor form a receiving end resonant cavity, and the receiving end resonant cavity is generated under the action of magnetic field energy. Resonance, a resonant magnetic field is generated in the energy receiving coil, the load coil receives the magnetic field energy in the form of an induced current in the resonant magnetic field, the load coil is connected to the energy processing circuit, and the energy processing circuit converts the magnetic field energy in the load coil according to the load, To realize the charging of the load;
所述能量接收线圈包括三个平面式线圈，三个平面式线圈的空间所在平面两两正交；The energy receiving coil includes three planar coils, and the planes where the spaces of the three planar coils are located are orthogonal to each other;
所述高频电源产生的交变电流的工作频率、发射端谐振腔体的固有频率和接收端谐振腔体的固有频率均相同。The working frequency of the alternating current generated by the high-frequency power supply, the natural frequency of the resonant cavity at the transmitting end, and the natural frequency of the resonant cavity at the receiving end are all the same.
本发明的优点：本发明所述的一种具有侧移适应性和旋转适应性的无线电能传输装置，解决了现有无线电能传输装置中当接收端空间的相对位置和自身角度发生变化时与磁场能量发生装置之间的耦合系数变小造成接收能量降低的问题。本发明的发射线圈和接收线圈为三个在空间上相互正交的线圈组合而成，具有三自由度的无指向性。发射线圈能够在三个维度上产生磁场空间，保证接收端在各个位置都能接收到磁场能量；接收端能够在任意角度中实现磁场的有效接收。利用这种结构的无线电能传输装置的接收端在较大的空间位置、任意角度下都能实现电能的稳定传输，并实现对多个用电设备同时供电。进一步完成对移动式和手持式用电设备的远程供电，方便用户使用。本发明适用于人体植入设备、便携式移动设备以及无线传感器网络节点的能量供给。Advantages of the present invention: the wireless power transmission device with side shift adaptability and rotation adaptability described in the present invention solves the problem of the existing wireless power transmission device when the relative position of the receiving end space and its own angle change. The reduction of the coupling coefficient between the magnetic field energy generating devices causes the problem that the received energy is reduced. The transmitting coil and the receiving coil of the present invention are composed of three mutually orthogonal coils in space, and have three-degree-of-freedom non-directivity. The transmitting coil can generate a magnetic field space in three dimensions, ensuring that the receiving end can receive magnetic field energy at any position; the receiving end can realize effective reception of the magnetic field at any angle. The receiving end of the wireless power transmission device using this structure can realize stable power transmission in a large space position and at any angle, and realize simultaneous power supply to multiple power-consuming devices. Further complete the remote power supply for mobile and handheld electrical equipment, which is convenient for users. The invention is applicable to the energy supply of human body implant equipment, portable mobile equipment and wireless sensor network nodes.
附图说明Description of drawings
图1是本发明所述一种具有侧移适应性和旋转适应性的无线电能传输装置的结构示意图；Fig. 1 is a schematic structural diagram of a wireless power transmission device with side shift adaptability and rotation adaptability according to the present invention;
图2是三个平面式线圈所在平面同时为圆形时能量发射线圈的结构示意图；Fig. 2 is a schematic structural diagram of the energy transmitting coil when the planes where the three planar coils are located are circular at the same time;
图3是三个平面式线圈所在平面为两个圆形和一个方形时能量发射线圈的结构示意图；Fig. 3 is a schematic diagram of the structure of the energy transmitting coil when the planes where the three planar coils are located are two circles and one square;
图4是三个平面式线圈所在平面为两个方形和一个圆形时能量发射线圈的结构示意图；Fig. 4 is a structural schematic diagram of the energy transmitting coil when the planes where the three planar coils are located are two squares and one circle;
图5是三个平面式线圈所在平面同时为方形时能量发射线圈的结构示意图；Fig. 5 is a schematic diagram of the structure of the energy transmitting coil when the planes where the three planar coils are located are square at the same time;
图6是采用线圈间分布式电容作为谐振电容时的发射端谐振电容和接收端谐振电容的一种结构示意图；FIG. 6 is a structural schematic diagram of the resonant capacitor at the transmitting end and the resonant capacitor at the receiving end when the distributed capacitance between coils is used as the resonant capacitor;
图7是采用线圈间分布式电容作为谐振电容时的发射端谐振电容和接收端谐振电容的另一种结构示意图；FIG. 7 is another structural schematic diagram of the resonant capacitor at the transmitting end and the resonant capacitor at the receiving end when the distributed capacitance between coils is used as the resonant capacitor;
图8是采用集中式电容器作为谐振电容时的发射端谐振电容和接收端谐振电容的一种结构示意图；FIG. 8 is a structural schematic diagram of the resonant capacitor at the transmitting end and the resonant capacitor at the receiving end when a centralized capacitor is used as the resonant capacitor;
图9是采用集中式电容器作为谐振电容时的发射端谐振电容和接收端谐振电容的另一种结构示意图；FIG. 9 is another structural schematic diagram of the resonant capacitor at the transmitting end and the resonant capacitor at the receiving end when a centralized capacitor is used as the resonant capacitor;
图10是采用集中式电容器作为谐振电容时的发射端谐振电容和接收端谐振电容的另一种结构示意图。FIG. 10 is another structural schematic diagram of the resonant capacitor at the transmitting end and the resonant capacitor at the receiving end when a centralized capacitor is used as the resonant capacitor.
具体实施方式Detailed ways
具体实施方式一：下面结合图1说明本实施方式，本实施方式所述一种具有侧移适应性和旋转适应性的无线电能传输装置，它包括能量发射装置和多个能量接收装置；能量发射装置将电能转换为高频的变化磁场，多个能量接收装置将空间中接收到的磁场转换为电能然后为负载10充电；接收端与发射端之间的相对位置能够自由变化；Specific Embodiment 1: The present embodiment will be described below in conjunction with FIG. 1. A wireless power transmission device with lateral shift adaptability and rotation adaptability described in this embodiment includes an energy transmitting device and a plurality of energy receiving devices; energy transmitting The device converts electrical energy into a high-frequency changing magnetic field, and multiple energy receiving devices convert the magnetic field received in space into electrical energy and then charge the load 10; the relative position between the receiving end and the transmitting end can be changed freely;
所述能量发射装置包括直流电源1、高频电源2、能量激励线圈3、能量发射线圈4和发射端谐振电容5，直流电源1将电流输出至高频电源2，高频电源2将直流电转换成高频形式的交变电流，然后将高频形式的交变电流输出至能量激励线圈3，能量激励线圈3在空间中形成初级磁场，并为能量发射线圈4提供磁场形式的能量，能量发射线圈4和发射端谐振电容5构成发射端谐振腔体，在初级磁场的激励下发生谐振，产生用于电能传输的磁场能量；The energy transmitting device includes a DC power supply 1, a high-frequency power supply 2, an energy excitation coil 3, an energy transmitting coil 4 and a resonant capacitor 5 at the transmitting end, the DC power supply 1 outputs current to the high-frequency power supply 2, and the high-frequency power supply 2 converts the DC power into an alternating current in the form of a high frequency, and then output the alternating current in the form of a high frequency to the energy excitation coil 3, the energy excitation coil 3 forms a primary magnetic field in space, and provides energy in the form of a magnetic field for the energy transmission coil 4, and the energy transmission The coil 4 and the resonant capacitor 5 at the transmitting end constitute a resonant cavity at the transmitting end, which resonates under the excitation of the primary magnetic field to generate magnetic field energy for power transmission;
所述能量发射线圈4包括三个平面式线圈，三个平面式线圈的空间所在平面两两正交；Described energy transmitting coil 4 comprises three planar coils, and the planes where the spaces of the three planar coils are located are orthogonal in pairs;
每个能量接收装置均包括能量接收线圈6、接收端谐振电容7、负载线圈8和能量处理电路9，能量接收线圈6和接收端谐振电容7构成接收端谐振腔体，接收端谐振腔体在磁场能量的作用下产生共振，在能量接收线圈6中产生共振磁场，负载线圈8在共振磁场内以感应电流的形式接收磁场能量，负载线圈8与能量处理电路9相连接，能量处理电路9根据负载10将负载线圈8中的磁场能量进行转换，实现对负载10充电；Each energy receiving device includes an energy receiving coil 6, a receiving end resonant capacitor 7, a load coil 8, and an energy processing circuit 9. The energy receiving coil 6 and the receiving end resonant capacitor 7 form a receiving end resonant cavity, and the receiving end resonant cavity is in the Resonance is generated under the action of magnetic field energy, a resonant magnetic field is generated in the energy receiving coil 6, the load coil 8 receives the magnetic field energy in the form of an induced current in the resonant magnetic field, the load coil 8 is connected with the energy processing circuit 9, and the energy processing circuit 9 is based on The load 10 converts the magnetic field energy in the load coil 8 to charge the load 10;
所述能量接收线圈6包括三个平面式线圈，三个平面式线圈的空间所在平面两两正交；The energy receiving coil 6 includes three planar coils, and the planes where the space of the three planar coils are located are orthogonal to each other;
所述高频电源2产生的交变电流的工作频率、发射端谐振腔体的固有频率和接收端谐振腔体的固有频率均相同。The operating frequency of the alternating current generated by the high-frequency power supply 2, the natural frequency of the resonant cavity at the transmitting end, and the natural frequency of the resonant cavity at the receiving end are all the same.
本实施方式中，能量发射线圈4和发射端谐振电容5构成谐振腔体结构，由于其固有频率与交变电流和初级磁场的一致，所以在初级磁场的激励下发生谐振，产生较大的电流和电压，并产生了用于电能传输的传输磁场。In this embodiment, the energy transmitting coil 4 and the resonant capacitor 5 at the transmitting end form a resonant cavity structure. Since its natural frequency is consistent with that of the alternating current and the primary magnetic field, resonance occurs under the excitation of the primary magnetic field to generate a large current and voltage, and generate a transmission magnetic field for power transmission.
本实施方式中，能量发射线圈4包括三个平面式线圈，三个平面式线圈的空间所在平面两两相互正交，工作时在三个方向上形成空间磁场，对于在磁场有效范围内的接收端都能接收到传输磁场。接收端与发射端之间的相对位置能够自由变化。In the present embodiment, the energy transmitting coil 4 includes three planar coils, and the planes where the spaces of the three planar coils are located are orthogonal to each other, forming a spatial magnetic field in three directions during operation, and for the reception within the effective range of the magnetic field Both ends can receive the transmitted magnetic field. The relative position between the receiving end and the transmitting end can be changed freely.
本实施方式中，所述能量发射装置中的高频电源2可以与能量激励线圈3相连接，也可以直接与发射端谐振腔体相连接。能量接收装置中的能量处理电路9可以与负载线圈8相连接，也可以与接收端谐振腔体相连接。In this embodiment, the high-frequency power supply 2 in the energy transmitting device may be connected to the energy excitation coil 3, or may be directly connected to the resonant cavity at the transmitting end. The energy processing circuit 9 in the energy receiving device may be connected to the load coil 8 or to the resonant cavity at the receiving end.
具体实施方式二：本实施方式对实施方式一作进一步说明，所述构成能量发射线圈4或能量接收线圈6的三个平面式线圈，线圈之间均通过抽头采用串联、并联或混和联接的方式连接。Specific Embodiment 2: This embodiment will further explain Embodiment 1. The three planar coils that constitute the energy transmitting coil 4 or the energy receiving coil 6 are all connected in series, parallel or mixed connection through taps. .
具体实施方式三：本实施方式对实施方式一作进一步说明，所述能量激励线圈3在空间上位于能量发射线圈4的内部或外部，负载线圈8在空间上位于能量接收线圈6的内部或外部。Embodiment 3: This embodiment further describes Embodiment 1. The energy excitation coil 3 is spatially located inside or outside the energy transmitting coil 4 , and the load coil 8 is spatially located inside or outside the energy receiving coil 6 .
具体实施方式四：下面结合图6-图10说明本实施方式，本实施方式对实施方式一作进一步说明，发射端谐振电容5和接收端谐振电容7的结构相同，均采用集中式电容器或线圈间的分布式电容作为谐振电容。Specific Embodiment Four: The present embodiment will be described below in conjunction with Fig. 6-Fig. The distributed capacitor acts as a resonant capacitor.
具体实施方式五：下面结合图2说明本实施方式，本实施方式对实施方式一作进一步说明，所述能量发射线圈4和能量接收线圈6的结构相同，三个平面式线圈全部为圆形，且直径相同。Specific embodiment five: the present embodiment will be described in conjunction with Fig. 2 below, and this embodiment will be further described to embodiment one, and the structure of described energy transmitting coil 4 and energy receiving coil 6 is identical, and three planar coils are all circular, and same diameter.
具体实施方式六：本实施方式对实施方式一作进一步说明，所述能量发射线圈4和能量接收线圈6的结构相同，三个平面式线圈采用完全相同的三个椭圆形。Embodiment 6: In this embodiment, Embodiment 1 is further described. The structure of the energy transmitting coil 4 and the energy receiving coil 6 is the same, and the three planar coils adopt the same three oval shapes.
具体实施方式七：下面结合图5说明本实施方式，本实施方式对实施方式一作进一步说明，所述能量发射线圈4和能量接收线圈6的结构相同，三个平面式线圈全部为正四边形，且边长相等。Specific embodiment seven: the present embodiment will be described below in conjunction with Fig. 5. This embodiment will further illustrate the first embodiment. The structure of the energy transmitting coil 4 and the energy receiving coil 6 is the same, and all three planar coils are regular quadrilaterals, and The sides are of equal length.
具体实施方式八：下面结合图3和图4说明本实施方式，本实施方式对实施方式一作进一步说明，所述能量发射线圈4和能量接收线圈6的结构相同，三个平面式线圈为正四边形和圆形的组合，且正四边形的边长和圆形的直径相等。Embodiment 8: The present embodiment will be described below in conjunction with FIG. 3 and FIG. 4 . This embodiment will further describe Embodiment 1. The structure of the energy transmitting coil 4 and the energy receiving coil 6 is the same, and the three planar coils are regular quadrilaterals. and a circle, and the side lengths of the regular quadrilateral are equal to the diameter of the circle.
本实施方式中，平面式线圈包括圆形、方形、椭圆形和菱形。三个平面式线圈可以同时为圆形，可以为两圆一方，可以为两方一圆，可以同时为方形，也可以使其他形状及其相互之间的任何组合。In this embodiment, the planar coil includes circle, square, ellipse and rhombus. The three planar coils can be circular at the same time, can be two circles and one side, can be two squares and one circle, can be square at the same time, can also make other shapes and any combination thereof.
本发明的工作原理：能量发射装置包括直流电源1、高频电源2、能量激励线圈3、能量发射线圈4和发射端谐振电容5。Working principle of the present invention: the energy transmitting device includes a DC power supply 1 , a high frequency power supply 2 , an energy excitation coil 3 , an energy transmitting coil 4 and a resonant capacitor 5 at the transmitting end.
直流电源1与市电连接，输出直流电能，或直接由电池提供。直流电与高频电源2相连，将直流电转化为高频交流电能。能量激励线圈3由多股或单股电线绕制而成，能量激励线圈3的两个抽头与高频交流电源相连。The DC power supply 1 is connected to the mains, and outputs DC power, or is directly provided by a battery. The direct current is connected with the high-frequency power supply 2 to convert the direct current into high-frequency alternating current energy. The energy excitation coil 3 is wound by multi-strand or single-strand electric wires, and the two taps of the energy excitation coil 3 are connected with a high-frequency AC power supply.
能量发射线圈4置于能量激励线圈3的有效磁场范围内，或能量激励线圈3置于能量发射线圈4内部。能量发射线圈4为三个线圈组合而成。The energy transmitting coil 4 is placed within the effective magnetic field range of the energy exciting coil 3 , or the energy exciting coil 3 is placed inside the energy transmitting coil 4 . The energy transmitting coil 4 is composed of three coils.
三个线圈中每个线圈的线束截面积远小于线圈所围成的面积，即The wire bundle cross-sectional area of each of the three coils is much smaller than the area surrounded by the coils, that is,
s×n＜＜Ss×n<<S
其中s为单股线圈的线径截面积，n为线圈匝数，S为线圈所围成的面积。Where s is the cross-sectional area of the wire diameter of the single-strand coil, n is the number of turns of the coil, and S is the area surrounded by the coil.
若线圈为圆形，则：If the coil is circular, then:
s×n＜＜πR2 s×n << πR 2
其中R为所围成的圆形线圈半径。Among them, R is the radius of the circular coil formed.
若线圈为方形，则：If the coil is square, then:
s×n＜＜D2 s×n<<D 2
其中D为所围成的方形边长。Where D is the side length of the enclosed square.
所述组成能量发射线圈4的三个线圈中，形状可以不同，为圆形型、方形、椭圆形或者长方形的各种组合。线圈所在平面横向尺寸和纵向尺寸相同，保证线圈在空间相互组合时能够有效相交。例如方形线圈和圆形线圈相互组合时，方形线圈边长等于圆形线圈直径。其中一个线圈所在平面与另一个线圈的所在平面相垂直，并且相交线同时为两个线圈的对称轴。第三个线圈的所在平面同时与第一和第二线圈所在平面垂直，并且垂直交线为第三个线圈所在平面图形的横向对称轴和纵向对称轴(如图2-图5)。The shapes of the three coils constituting the energy transmitting coil 4 can be different, such as various combinations of circular, square, elliptical or rectangular. The horizontal and vertical dimensions of the plane where the coils are located are the same, ensuring that the coils can effectively intersect when combined in space. For example, when a square coil and a circular coil are combined, the side length of the square coil is equal to the diameter of the circular coil. The plane where one coil is located is perpendicular to the plane where the other coil is located, and the intersection line is the symmetry axis of the two coils at the same time. The plane where the third coil is located is perpendicular to the planes where the first and second coils are located, and the perpendicular intersection line is the horizontal axis of symmetry and the longitudinal axis of symmetry of the plane figure where the third coil is located (as shown in Figures 2-5).
单个线圈抽头处负责与其他线圈进行连接，三个相互组合的线圈之间可以通过串联、并联以及混联的方式进行组合。若利用线圈间分布电容作为发射线圈的谐振电容，则构成发射线圈的三个线圈连接方式有串联方式或并联方式(如图6-图7)，如果利用谐振电容器作为发射线圈电容的谐振电容，则三个线圈之间的连接方式有串联、并联以及混联等形式，并且引出与谐振电容器相连接的连接端子(图8-图10)。连接端子直接与谐振电容相连。发射端线圈以及电容形成的谐振腔体的固有频率为：A single coil tap is responsible for connecting with other coils, and the three combined coils can be combined in series, parallel and hybrid. If the distributed capacitance between the coils is used as the resonant capacitance of the transmitting coil, the three coils that constitute the transmitting coil are connected in series or in parallel (as shown in Figure 6-Figure 7). If the resonant capacitor is used as the resonant capacitance of the transmitting coil capacitance, Then, the connection modes among the three coils include series connection, parallel connection and hybrid connection, etc., and the connection terminals connected with the resonant capacitor are drawn out (Figure 8-Figure 10). The connection terminal is directly connected to the resonant capacitor. The natural frequency of the resonant cavity formed by the transmitter coil and the capacitor is:
L发射为三个线圈组合而成的发射线圈的等效总电感，C发射为匹配的谐振电容或分布电容的容值。L emission is the equivalent total inductance of the transmitting coil composed of three coils, and C emission is the capacitance of the matching resonant capacitance or distributed capacitance.
所述的能量接收线圈6同样由三个线圈组合而成，其组合方式以及电容连接方法与发射端发射线圈类似。接收线圈尺寸可小于发射线圈尺寸。接收线圈与电容器或自身分布电容所构成的谐振腔体的固有频率为：The energy receiving coil 6 is also composed of three coils, and its combination method and capacitance connection method are similar to those of the transmitting coil at the transmitting end. The receive coil size may be smaller than the transmit coil size. The natural frequency of the resonant cavity formed by the receiving coil and the capacitor or its own distributed capacitance is:
L接收为接收端三个线圈组合而成的接收线圈的等效总电感，C接收为匹配的谐振电容或分布电容的容值。其中f发射＝f接收，并且电能发射端的高频交流电源与发射谐振腔体和接收谐振腔体的固有频率一致。L receiving is the equivalent total inductance of the receiving coil composed of three coils at the receiving end, and C receiving is the capacitance of the matched resonant capacitor or distributed capacitor. Where f transmit =f receive , and the high-frequency AC power supply at the power transmitting end is consistent with the natural frequency of the transmitting resonant cavity and the receiving resonant cavity.
负载线圈由单股或多股电线绕制而成，置于接收线圈的有效磁场范围内，空间上可置于接收线圈外部或接收线圈内部。负载线圈的两个抽头与电能处理电路的输入端相连。电能处理电路负责将负载线圈两端的交流形式的电能转化为用电负载能够接收到的能量，其输出端与用电负载的输入端相连。The load coil is made of single-strand or multi-strand wires, placed within the effective magnetic field range of the receiving coil, and can be placed outside the receiving coil or inside the receiving coil in space. Two taps of the load coil are connected to the input terminals of the power processing circuit. The electric energy processing circuit is responsible for converting the AC electric energy at both ends of the load coil into energy that can be received by the electric load, and its output end is connected with the input end of the electric load.
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