技术领域technical field
本发明属于无线能量传输领域，具体涉及基于单极性线圈的多负载谐振自解耦式无线能量传输系统。The invention belongs to the field of wireless energy transmission, in particular to a multi-load resonance self-decoupling wireless energy transmission system based on a unipolar coil.
背景技术Background technique
无线电能传输(Wireless Power Transfer，WPT)是一种利用电磁场或者电磁波将电能无线传输到接收设备的技术。这种技术不需要传统的有线连接，使得电能的传输更加灵活便捷。WPT可以应用于多种场景，例如为移动设备充电、为电动车充电、或者为远程区域提供电力。Wireless Power Transfer (WPT) is a technology that uses electromagnetic fields or electromagnetic waves to wirelessly transmit power to a receiving device. This technology does not require traditional wired connections, making power transmission more flexible and convenient. WPT can be applied in various scenarios, such as charging mobile devices, charging electric vehicles, or providing power to remote areas.
如今，WPT技术已经趋于成熟化，能够完美地运用在很多关键的领域。基于WPT技术的工作原理，可将其分为微波辐射式(MR-WPT)、电磁感应式(ICPT)以及磁耦合谐振式(MCR-WPT)。其中，MCR-WPT工作效率较高，适用于电动汽车、医疗设备领域，得到了广泛的关注。磁耦合谐振式首先将直流电源通过高频逆变器得到高频交流电源，经过阻抗匹配单元后，进入发射线圈；然后，由于两侧线圈之间的谐振频率是相同的，所以能量通过交变磁场实现了从一次侧传递至二次侧；最后，通过二次侧的负载驱动电路单元后，对系统负载进行能量存储。这一技术一个中继单元中两个单元的耦合抵消是一个难点，需要实现解耦，避免相互干扰。Today, WPT technology has matured and can be perfectly used in many key areas. Based on the working principle of WPT technology, it can be divided into microwave radiation type (MR-WPT), electromagnetic induction type (ICPT) and magnetic coupling resonance type (MCR-WPT). Among them, MCR-WPT has high working efficiency and is suitable for the fields of electric vehicles and medical equipment, and has received extensive attention. The magnetic coupling resonant type first passes the DC power through the high-frequency inverter to obtain the high-frequency AC power, passes through the impedance matching unit, and then enters the transmitting coil; then, since the resonant frequency between the coils on both sides is the same, the energy passes through the alternating current The magnetic field is transferred from the primary side to the secondary side; finally, after passing through the load drive circuit unit on the secondary side, energy is stored for the system load. In this technology, the coupling and offsetting of two units in a relay unit is a difficult point, and decoupling needs to be realized to avoid mutual interference.
目前，中继单元的杂散耦合抵消可采用双极性线圈和补偿电路的设计进行抵消。但这种方法绕制的双极性线圈较为复杂，不适合在工程实际中推广应用。且多负载供电的功率会交叉耦合，难以在实际中有效应用。At present, the stray coupling cancellation of the relay unit can be canceled by the design of the bipolar coil and the compensation circuit. However, the bipolar coil wound by this method is relatively complicated, and it is not suitable for popularization and application in engineering practice. Moreover, the power supplied by multiple loads will be cross-coupled, which is difficult to effectively apply in practice.
发明内容Contents of the invention
针对现有技术的不足，本发明的目的在于提供基于单极性线圈的多负载谐振自解耦式无线能量传输系统。Aiming at the deficiencies of the prior art, the purpose of the present invention is to provide a multi-load resonant self-decoupling wireless energy transmission system based on unipolar coils.
本发明的目的可以通过以下技术方案实现：The purpose of the present invention can be achieved through the following technical solutions:
基于单极性线圈的多负载谐振自解耦式无线能量传输系统，包括一个逆变器、一个发射单元、一个接收单元，以及位于发射单元和接收单元之间的若干中继单元，中继单元中也设置有一个发射单元和一个接收单元，前一个发射单元的输出为后一个接收单元的输入；直流输入电压由逆变器逆变为高频交变电压源，并由发射单元利用磁场耦合传输能量至接收单元；A multi-load resonant self-decoupling wireless energy transmission system based on unipolar coils, including an inverter, a transmitting unit, a receiving unit, and several relay units located between the transmitting unit and the receiving unit, the relay unit There is also a transmitting unit and a receiving unit, the output of the previous transmitting unit is the input of the latter receiving unit; the DC input voltage is converted into a high-frequency alternating voltage source by the inverter, and the transmitting unit utilizes magnetic field coupling transmit energy to the receiving unit;
所述发射单元包括：发射补偿电容和发射线圈，所述接收单元包括：接收补偿电容、负载电阻和接收线圈，发射线圈和接收线圈均为单极性线圈；并且，在中继单元中，发射单元和接收单元之间设置有补偿电容Cfm，发射线圈和接收线圈之间设置有铁氧体。The transmitting unit includes: a transmitting compensation capacitor and a transmitting coil, and the receiving unit includes: a receiving compensating capacitor, a load resistance and a receiving coil, and both the transmitting coil and the receiving coil are unipolar coils; and, in the relay unit, the transmitting A compensation capacitor Cfm is set between the unit and the receiving unit, and a ferrite is set between the transmitting coil and the receiving coil.
进一步地，中继单元中，发射线圈与发射补偿电容串联，接收线圈和接收补偿电容以及负载电阻串联；补偿电容Cfm并联在发射线圈和接收线圈之间，构成T型补偿结构。Further, in the relay unit, the transmitting coil is connected in series with the transmitting compensation capacitor, and the receiving coil is connected in series with the receiving compensation capacitor and the load resistance; the compensation capacitor Cfm is connected in parallel between the transmitting coil and the receiving coil, forming a T-shaped compensation structure.
进一步地，所述发射线圈和接收线圈的绕制方式相同，且发射补偿电容与接收补偿电容相等。Further, the winding mode of the transmitting coil and the receiving coil is the same, and the transmitting compensation capacitance is equal to the receiving compensation capacitance.
进一步地，所述中继单元中，补偿电容Cfm可以表示为：Further, in the relay unit, the compensation capacitor Cfm can be expressed as:
式中，Lm_r为第m个接收线圈电感，km-1_t，m_r为第m-1个发射单元和第m个接收单元之间的耦合系数，km_r，m_t为第m个接收单元和第m个发射单元之间的杂散耦合系数，ω是谐振角频率。In the formula, Lm_r is the inductance of the m-th receiving coil, km-1_t, m_r is the coupling coefficient between the m-1th transmitting unit and the m-th receiving unit, km_r, m_t is the m-th receiving unit and The spurious coupling coefficient between the mth transmitting elements, ω is the resonant angular frequency.
进一步地，所述耦合系数的表达式如下：Further, the expression of the coupling coefficient is as follows:
式中，Lm_t为第m个发射线圈电感，Lm_r为第m个接收线圈电感，Mm-1_t，m_r是Lm-1_t和Lm_r之间的互感，km-1_t，m_r是Lm-1_t和Lm_r之间的耦合系数；Mm_r，m_t是Lm_r和Lm_t之间的互感，km_r，m_t是Lm_r和Lm_t之间的耦合系数。In the formula, Lm_t is the inductance of the mth transmitting coil, Lm_r is the inductance of the mth receiving coil, Mm-1_t, m_r is the mutual inductance between Lm-1_t and Lm_r , km-1_t, m_r is L The coupling coefficient betweenm-1_t and Lm_r ; Mm_r,m_t is the mutual inductance between Lm_r and Lm_t , km_r,m_t is the coupling coefficient between Lm_r and Lm_t .
进一步地，中继单元中，接收补偿电容和和发射补偿电容可以表示为：Further, in the relay unit, the receiving compensation capacitance and the transmitting compensation capacitance can be expressed as:
Cm_r＝Cm_t (6)Cm_r = Cm_t (6)
Lm_r＝Lm_t (7)Lm_r = Lm_t (7)
式中，Cm_t第m个发射补偿电容，Cm_r第m个接收补偿电容，Lm_t为第m个发射线圈电感，Lm_r为第m个接收线圈电感。In the formula, Cm_t is the m-th transmitting compensation capacitor, Cm_r is the m-th receiving compensation capacitor, Lm_t is the inductance of the m-th transmitting coil, and Lm_r is the inductance of the m-th receiving coil.
进一步地，中继单元单元的耦合系数相同，则有所有负载电流值相同：Furthermore, if the coupling coefficients of the relay units are the same, then all the load current values are the same:
式中，Lm_r,m_t为接收-发射线圈间耦合系数的等效电感，Cm_rt为与消除耦合关系的等效电容，Im为回路中的电流。In the formula, Lm_r, m_t is the equivalent inductance of the coupling coefficient between the receiving and transmitting coils, Cm_rt is the equivalent capacitance related to the elimination of coupling, and Im is the current in the loop.
一种充电设备，包括上述无线能量传输系统。A charging device includes the above-mentioned wireless energy transmission system.
本发明的有益效果：Beneficial effects of the present invention:
1、不需要复杂的控制和通信电路即可同时给多负载供电，单极性线圈绕制方式简单，成本低。1. It can supply power to multiple loads at the same time without complicated control and communication circuits. The winding method of unipolar coil is simple and the cost is low.
2、通过单极性耦合线圈和全容性补偿回路设计，实现了磁场解耦和负载功率的独立控制，输出电流与负载无关。2. Through the design of unipolar coupling coil and full capacitive compensation circuit, the independent control of magnetic field decoupling and load power is realized, and the output current has nothing to do with the load.
附图说明Description of drawings
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, In other words, other drawings can also be obtained from these drawings on the premise of not paying creative work.
图1是本发明无线能量传输系统的结构示意图；Fig. 1 is a schematic structural diagram of the wireless energy transmission system of the present invention;
图2是本发明无线能量传输系统的耦合器结构示意图；Fig. 2 is a schematic structural diagram of a coupler of the wireless energy transmission system of the present invention;
图3是本发明的无线能量传输系统的不同线圈耦合系数随铁氧体厚度变化的折线图；Fig. 3 is a broken line diagram of different coil coupling coefficients changing with ferrite thickness in the wireless energy transmission system of the present invention;
图4是本发明无线能量传输系统的流控电压源模型；Fig. 4 is a flow control voltage source model of the wireless energy transmission system of the present invention;
图5是本发明无线能量传输系统的补偿电路演化过程；Fig. 5 is the evolution process of the compensation circuit of the wireless energy transmission system of the present invention;
图6是本发明无线能量传输系统的仿真波形图；Fig. 6 is a simulation waveform diagram of the wireless energy transmission system of the present invention;
图7是本发明无线能量传输系统的另一个仿真波形图。Fig. 7 is another simulation waveform diagram of the wireless energy transmission system of the present invention.
具体实施方式Detailed ways
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其它实施例，都属于本发明保护的范围。The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
如图1所示，基于单极性线圈的多负载谐振自解耦式无线能量传输系统，包括一个逆变器、一个发射单元、一个接收单元，以及位于发射单元和接收单元之间的m个中继单元，其中，m＝1,2,…,N；每个中继单元中也设置有一个发射单元和一个接收单元，并且前一个发射单元的输出为后一个接收单元的输入；As shown in Figure 1, the multi-load resonant self-decoupling wireless energy transmission system based on unipolar coils includes an inverter, a transmitting unit, a receiving unit, and m A relay unit, wherein, m=1, 2,..., N; each relay unit is also provided with a transmitting unit and a receiving unit, and the output of the previous transmitting unit is the input of the subsequent receiving unit;
逆变器的输入直流电压是Vdc，工作角频率为ω，逆变器以互补方式工作，输出基波电压Vin1的幅值可以表示为直流输入电压Vdc由逆变器逆变为高频交变电压源，并由发射单元利用磁场耦合传输能量至接收单元，接收单元可以为串接的负载电阻供电，以此类推，可以为所有接收单元中的负载电阻供电，以实现多负载的恒流独立供电。The input DC voltage of the inverter is Vdc , the operating angular frequency is ω, the inverter works in a complementary manner, and the amplitude of the output fundamental voltage Vin1 can be expressed as The DC input voltage Vdc is converted into a high-frequency alternating voltage source by the inverter, and the transmitting unit uses magnetic field coupling to transmit energy to the receiving unit. The receiving unit can supply power to the load resistor connected in series, and so on, can provide power for all The load resistor in the receiving unit supplies power to realize constant current independent power supply of multiple loads.
接收单元包括：中继单元#m中的发射线圈Lm_t和接收线圈Lm_r通过三个补偿电容(Cm_r，Cm_t，Cfm)相连，其中Cm_r与Lm_r串联，Cm_t与Lm_t串联，Cfm并联在两个线圈之间，构成T型补偿结构。在发射单元#0中，只有一个发射补偿电容C0_t与发射线圈L0_t串联；类似地，在接收单元#N中，只有一个接收补偿电容C0_r与发射线圈L0_r串联；负载Rm与Lm_r串联。The receiving unit includes: the transmitting coil Lm_t and the receiving coil Lm_r in the relay unit #m are connected through three compensation capacitors (Cm_r , Cm_t , Cfm ), wherein Cm_r is connected in series with Lm_r , Cm_t is connected with Lm_t In series, Cfm is connected in parallel between the two coils to form a T-shaped compensation structure. In the transmitting unit #0, only one transmitting compensation capacitor C0_t is connected in series with the transmitting coil L0_t ; similarly, in the receiving unit #N, only one receiving compensation capacitor C0_r is connected in series with the transmitting coil L0_r ; the load Rm is connected with Lm_r in series.
需要注意的是，接受线圈和发射线圈均为单极性线圈；因单极性线圈在线圈结构上未实现磁场解耦，同一中继单元中的接收线圈和发射线圈仍存在磁场上的耦合；为此，如图2所示，在同一中继单元中的接收线圈和发射线圈之间设置铁氧体，两线圈间的铁氧体可以增强相邻中继单元的磁耦合系数，降低被隔开线圈的系数，所以利用铁氧体可以在物理上降低单极性线圈的磁场耦合；相同中继单元内两个单极性线圈的杂散耦合可以通过提出的全容性补偿网络(Cn_r,Cn_t,Cfm)消除，以实现多负载的恒流输出，实现了负载功率的独立控制中继单元中；It should be noted that both the receiving coil and the transmitting coil are unipolar coils; because the unipolar coil does not achieve magnetic field decoupling in the coil structure, the receiving coil and transmitting coil in the same relay unit still have magnetic field coupling; For this reason, as shown in Figure 2, a ferrite is set between the receiving coil and the transmitting coil in the same relay unit, and the ferrite between the two coils can enhance the magnetic coupling coefficient of the adjacent relay unit and reduce the The coefficient of the open coil, so the use of ferrite can physically reduce the magnetic field coupling of the unipolar coil; the stray coupling of two unipolar coils in the same relay unit can be eliminated by the proposed full capacitive compensation network (Cn_r , Cn_t , Cfm ) are eliminated to realize multi-load constant current output and independent control of load power in the relay unit;
通过设置全容性补偿电路，消除了同一个中继单元内接收、发射线圈的杂散；通过设置每个接收、发射线圈的参数(即发射线圈和接收线圈的绕制方式相同，且发射补偿电容与接收补偿电容相等)值相等，因磁场耦合带来的接收、发射线圈的杂散电感可以等效表现在并联支路中，电路中串联谐振可以等效为短路，因此设置补偿电容Cfm来消除杂散电感带来的影响，实现中继单元内部解耦。其中，第m个中继单元中补偿电容Cfm可以表示为：By setting a full capacitive compensation circuit, the strays of the receiving and transmitting coils in the same relay unit are eliminated; by setting the parameters of each receiving and transmitting coil (that is, the winding method of the transmitting coil and the receiving coil is the same, and the transmitting compensation capacitance equal to the receiving compensation capacitor) value, the stray inductance of the receiving and transmitting coils caused by magnetic field coupling can be equivalently expressed in the parallel branch, and the series resonance in the circuit can be equivalent to a short circuit, so the compensation capacitor Cfm is set to Eliminate the influence of stray inductance and realize the internal decoupling of the relay unit. Among them, the compensation capacitor Cfm in the mth relay unit can be expressed as:
式中，Lm_r为第m个接收线圈电感，km-1_t，m_r为第m-1个发射单元和第m个接收单元之间的耦合系数，km_r，m_t为第m个接收单元和第m个发射单元之间的杂散耦合系数；耦合系数表示元件间耦合的松紧程度，定义为两电感元件间实际的互感(绝对值)与其最大极限值之比，表达式如下：In the formula, Lm_r is the inductance of the m-th receiving coil, km-1_t, m_r is the coupling coefficient between the m-1th transmitting unit and the m-th receiving unit, km_r, m_t is the m-th receiving unit and The stray coupling coefficient between the mth transmitting unit; the coupling coefficient indicates the degree of tightness of the coupling between elements, and is defined as the ratio of the actual mutual inductance (absolute value) between two inductive elements to its maximum limit value, the expression is as follows:
式中，Lm_t为第m个发射线圈电感，Lm_r为第m个接收线圈电感，Mm-1_t，m_r是Lm-1_t和Lm_r之间的互感。In the formula, Lm_t is the inductance of the mth transmitting coil, Lm_r is the inductance of the mth receiving coil, Mm-1_t, m_r is the mutual inductance between Lm-1_t and Lm_r .
通过设置电容参数在接收回路恒流输出，实现对不同负载的独立控制；第m个中继单元中的两个线圈平行放置以形成中继单元m，以此类推；中继单元m中的接收补偿电容和和发射补偿电容可以表示为：By setting the capacitance parameters and outputting constant current in the receiving circuit, independent control of different loads is realized; the two coils in the mth relay unit are placed in parallel to form a relay unit m, and so on; the receiver in the relay unit m The compensation capacitance and the emission compensation capacitance can be expressed as:
Cm_r＝Cm_t (6)Cm_r = Cm_t (6)
Lm_r＝Lm_t (7)Lm_r = Lm_t (7)
式中，Cm_t第m个发射补偿电容，Cm_r第m个接收补偿电容，Lm_t为第m个发射线圈电感，Lm_r为第m个接收线圈电感；In the formula, Cm_t is the m-th transmitting compensation capacitor, Cm_r is the m-th receiving compensation capacitor, Lm_t is the inductance of the m-th transmitting coil, and Lm_r is the inductance of the m-th receiving coil;
假定式成立，设所有中继单元单元的耦合系数相同，则有所有负载电流值相同，见式：Assuming that the formula is established, assuming that the coupling coefficients of all relay units are the same, then all the load current values are the same, see the formula:
式中，Lm_r，m_t为接收-发射线圈间耦合系数的等效电感，Cm_rt为与消除耦合关系的等效电容，Im为回路中的电流。In the formula, Lm_r, m_t is the equivalent inductance of the coupling coefficient between the receiving and transmitting coils, Cm_rt is the equivalent capacitance related to the elimination of coupling, and Im is the current in the loop.
指的一提的是，在本发明中，负载电流恒定且不受其他负载影响，可独立运行，简化了系统设计和功率控制。It should be mentioned that in the present invention, the load current is constant and not affected by other loads, and can operate independently, which simplifies system design and power control.
综上，在给定单极性线圈电感参数L0_t后，可以根据谐振条件求出C0_t，由下式计算得到：In summary, after the inductance parameter L0_t of the unipolar coil is given, C0_t can be obtained according to the resonance condition, which is calculated by the following formula:
令L1_r＝L0_r，可以得到中继单元1的L1_r，C1_r、C1_t、Cf1由下式计算得到：Let L1_r =L0_r , you can get L1_r of relay unit 1, C1_r , C1_t , and Cf1 are calculated by the following formula:
以此类推，可以得到基于单极性线圈的多负载谐振自解耦式无线能量传输系统的全容性补偿各参数和各负载电流值。By analogy, each parameter and each load current value of the full capacitive compensation of the multi-load resonant self-decoupling wireless energy transmission system based on the unipolar coil can be obtained.
如图3(a)所示，随铁氧体厚度增大，上一级发射线圈和下一级接收线圈的耦合系数增大，上一级发射线圈和下一级发射线圈的耦合系数稍有减小，上一级发射线圈和下两级接收线圈的耦合系数几乎不变。如图3(b)所示，随铁氧体增大，同一个中继单元内的接收-发射线圈间的耦合系数大大降低。可以看出，设置铁氧体能够降低同一单元内的耦合，同时增大上一级发射-下一级接收线圈之间的耦合系数，起到物理上消除耦合的作用。As shown in Figure 3(a), as the thickness of the ferrite increases, the coupling coefficient between the upper-stage transmitting coil and the lower-stage receiving coil increases, and the coupling coefficient between the upper-stage transmitting coil and the lower-stage transmitting coil slightly decreases. Decreases, the coupling coefficients of the upper-stage transmitting coil and the lower two-stage receiving coils are almost unchanged. As shown in Figure 3(b), as the ferrite increases, the coupling coefficient between the receiving and transmitting coils in the same relay unit decreases greatly. It can be seen that the setting of ferrite can reduce the coupling in the same unit, and at the same time increase the coupling coefficient between the upper-stage transmitting coil and the next-stage receiving coil, which can physically eliminate the coupling.
如图4和图5所示，本发明的电路可以等效为流控电压源模型，从原理上说明了每个负载所在的回路电流恒定的原因。每个中继单元的补偿电路可以进一步化简，得到图五中的容性补偿简化电路。As shown in Fig. 4 and Fig. 5, the circuit of the present invention can be equivalent to a current-controlled voltage source model, which explains in principle the reason why the loop current of each load is constant. The compensation circuit of each relay unit can be further simplified to obtain the simplified capacitive compensation circuit in Figure 5.
下面以具体的实施例来验证本发明所提出的方案；The scheme proposed by the present invention is verified below with specific examples;
工作频率为100kHz，直流母线电压为24V；The working frequency is 100kHz, and the DC bus voltage is 24V;
图6中，六个负载分别为RL1＝RL2＝RL3＝RL4＝RL5＝RL6＝12Ω，L0_t＝100μH，C0_t＝25.330nF，L1_r＝L1_t＝L2_r＝L2_t＝…＝LM_r＝LM_t＝100μH，C1_r＝C1_t＝C2_r＝C2_t＝…＝CM_r＝CM_t＝33.744nF，Cf1＝Cf2＝…＝Cfm＝101.32nF，k0_t,1_r＝k1_t,2_r＝…＝km-1_t,m_r＝0.05，k1_r,1_t＝k2_r,2_t＝…＝km_r,m_t＝0.20，此时负载电流峰值分别为IL1＝IL2＝IL3＝IL4＝IL5＝IL6＝2.42A。In Figure 6, the six loads are RL1 =RL2 =RL3 =RL4 =RL5 =RL6 =12Ω, L0_t =100μH, C0_t =25.330nF, L1_r =L1_t =L2_r =LK___________0_t, 1_r = k1_t, 2_r = ... = km-1_t, m_r = 0.05, k1_r, 1_t = k2_r, 2_t = ... = km_r, m_t = 0.20, and the load current peak values are IL1 = IL2 =IL3 =IL4 =IL5 =IL6 =2.42A.
图7中，负载RL1＝10Ω,RL2＝11Ω,RL3＝12Ω,RL4＝13Ω,RL5＝15Ω，RL6＝16Ω，其他电感、电容参数同图6参数。仿真说明，六个负载电流峰值仍与图6中结果相同。In Fig. 7, the load RL 1 = 10Ω, RL2 = 11Ω, RL3 = 12Ω, RL4 = 13Ω, RL5 = 15Ω, RL6 = 16Ω, and other inductance and capacitance parameters are the same as those in Fig. 6. Simulation shows that the six load current peaks are still the same as the results in Figure 6.
根据理论分析，各负载电流值应为：According to theoretical analysis, each load current value should be:
由此可见，本专利设计的基于单极性耦合线圈的多负载谐振式无线能量传输系统实现了与负载无关的恒流输出，避免了多负载之间的功率串扰。It can be seen that the multi-load resonant wireless energy transmission system based on the unipolar coupling coil designed in this patent realizes a constant current output independent of the load and avoids power crosstalk between multiple loads.
从以上实施例可看出，采用本发明提出的基于单极性线圈的多负载谐振自解耦式无线能量传输系统能够同时实现多负载的恒流输出和负载功率解耦控制。It can be seen from the above embodiments that the multi-load resonant self-decoupling wireless energy transmission system based on unipolar coils proposed by the present invention can simultaneously realize multi-load constant current output and load power decoupling control.
在本说明书的描述中，参考术语“一个实施例”、“示例”、“具体示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。In the description of this specification, descriptions referring to the terms "one embodiment", "example", "specific example" and the like mean that specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment of the present invention. In an embodiment or example. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
以上显示和描述了本发明的基本原理、主要特征和本发明的优点。本行业的技术人员应该了解，本发明不受上述实施例的限制，上述实施例和说明书中描述的只是说明本发明的原理，在不脱离本发明精神和范围的前提下，本发明还会有各种变化和改进，这些变化和改进都落入要求保护的本发明范围内。The basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the industry should understand that the present invention is not limited by the above-mentioned embodiments. What are described in the above-mentioned embodiments and the description only illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will also have Variations and improvements are possible, which fall within the scope of the claimed invention.
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| CN202310687250.6ACN116683660A (en) | 2023-06-12 | 2023-06-12 | Multi-load resonance self-decoupling wireless energy transmission system based on unipolar coil |
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| CN119209955A (en)* | 2024-11-28 | 2024-12-27 | 中国石油大学(华东) | AUV wireless charging device |
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