CN118238641A - Electric field-magnetic field hybrid coupling mechanism and its energy-signal simultaneous transmission system in stereo garage - Google Patents

Electric field-magnetic field hybrid coupling mechanism and its energy-signal simultaneous transmission system in stereo garage Download PDF

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Publication number
CN118238641A
CN118238641A CN202410217615.3A CN202410217615A CN118238641A CN 118238641 A CN118238641 A CN 118238641A CN 202410217615 A CN202410217615 A CN 202410217615A CN 118238641 A CN118238641 A CN 118238641A
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vehicle
module
secondary side
primary side
primary
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吴学颖
冯启昌
陈卓
李德刚
雷婷
潘俐
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Chongqing University of Science and Technology
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Chongqing University of Science and Technology
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/10Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
    • B60L53/12Inductive energy transfer
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/10Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
    • B60L53/12Inductive energy transfer
    • B60L53/126Methods for pairing a vehicle and a charging station, e.g. establishing a one-to-one relation between a wireless power transmitter and a wireless power receiver
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04HBUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H6/00Buildings for parking cars, rolling-stock, aircraft, vessels or like vehicles, e.g. garages
    • E04H6/42Devices or arrangements peculiar to garages, not covered elsewhere, e.g. securing devices, safety devices, monitoring and operating schemes; centering devices
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/10Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
    • H02J50/12Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Architecture (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

The application provides an electric field-magnetic field hybrid coupling mechanism in a stereo garage and an energy communication and simultaneous transmission system thereof. The wireless power transmission system is used for solving the problem that the existing wireless power transmission system cannot meet the use requirement of the stereo garage. The three-dimensional garage comprises a plurality of parking modules which are arranged at equal intervals along the vertical direction, wherein the parking modules comprise metal car carrying plates, and the rear ends of the parking modules are provided with transmitting coils L p; the bottom and the top of the vehicle to be charged are both provided with vehicle-mounted electrode plates, the rear part of the vehicle to be charged is provided with a receiving coil L s, the two vehicle-mounted electrode plates respectively form two groups of electric field coupling modules with the metal vehicle-mounted plate for parking the vehicle to be charged and the metal vehicle-mounted plate of the parking module above the two vehicle-mounted electrode plates, and the transmitting coil L p and the receiving coil L s form a magnetic field coupling module. According to the structural characteristics of the stereo garage, the six-capacitor cross coupling model is built based on the vehicle carrying plate and is used as a signal transmission channel, and the magnetic field coupling module is used as an electric energy transmission channel. Thereby realizing full duplex transmission.

Description

立体车库中电场-磁场混合式耦合机构及其能信同传系统Electric field-magnetic field hybrid coupling mechanism and its energy-signal simultaneous transmission system in stereo garage

技术领域Technical Field

本发明涉及无线电能传输领域,特别是一种立体车库中电场-磁场混合式耦合机构及其能信同传系统。The invention relates to the field of wireless power transmission, in particular to an electric field-magnetic field hybrid coupling mechanism in a stereo garage and an energy and signal simultaneous transmission system thereof.

背景技术Background Art

近年来随着全球电动汽车保有量的增加,电动汽车的专用停车位将日趋增加,而立体车库能够有效解决停车位占地面积与有限土地面积的矛盾,但目前鲜有针对电动汽车充电的立体车库。因为采用传统的有线充电方式必将导致立体车库中的充电导线分布杂乱无章,带来一系列安全隐患。此外,有线充电方式还需采用机械手辅助插拔操作,这既增加了立体车库的体积和重量,也增大电动车的充电成本。In recent years, with the increase in the number of electric vehicles in the world, the number of dedicated parking spaces for electric vehicles will increase day by day. Stereoscopic parking garages can effectively solve the contradiction between the area occupied by parking spaces and the limited land area. However, there are few stereoscopic parking garages for charging electric vehicles. Because the use of traditional wired charging methods will inevitably lead to the disorderly distribution of charging wires in the stereoscopic parking garage, which will bring a series of safety hazards. In addition, the wired charging method also requires the use of a manipulator to assist in the plug-in and unplug operation, which not only increases the size and weight of the stereoscopic parking garage, but also increases the charging cost of electric vehicles.

近年来,无线电能传输WPT技术飞速发展,其已经在电动汽车领域取得了大量的研究成果,全球多地均建设有电动汽车无线充电示范装置。然而,虽然WPT技术在电动汽车领域的成果日渐增多,但针对立体车库中电动汽车的无线充电技术的研究非常少,现有技术中针对立体车库中电动汽车的无线充电均采用磁场耦合式无线电能传输MC-WPT技术,其充电线圈一般置于金属载车板上,并没有考虑金属载车板对无线充电的影响。实际上,在高频交变电磁场的作用下,金属载车板上会产生很大的涡流损耗,会严重影响系统输出功率、传输效率以及系统安全性。In recent years, wireless power transmission (WPT) technology has developed rapidly, and it has achieved a lot of research results in the field of electric vehicles. Electric vehicle wireless charging demonstration devices have been built in many places around the world. However, although the achievements of WPT technology in the field of electric vehicles are increasing, there are very few studies on wireless charging technology for electric vehicles in stereo garages. In the existing technology, wireless charging of electric vehicles in stereo garages uses magnetic field coupling wireless power transmission (MC-WPT) technology, and its charging coil is generally placed on the metal carrier plate, without considering the impact of the metal carrier plate on wireless charging. In fact, under the action of high-frequency alternating electromagnetic fields, large eddy current losses will be generated on the metal carrier plate, which will seriously affect the system output power, transmission efficiency and system safety.

发明内容Summary of the invention

本发明的目的就是提供一种立体车库中电场-磁场混合式耦合机构及其能信同传系统。用于解决现有技术中现有无线电能传输系统无法满足立体车库使用需求的问题。The purpose of the present invention is to provide an electric field-magnetic field hybrid coupling mechanism and its energy and signal transmission system in a stereo garage, so as to solve the problem that the existing wireless power transmission system in the prior art cannot meet the use requirements of the stereo garage.

一种立体车库中电场-磁场混合式耦合机构,立体车库包括沿竖直方向等间距设置的若干停车模块,若干所述停车模块均包括金属载车板,若干所述停车模块的后端均设置有发射线圈LpAn electric field-magnetic field hybrid coupling mechanism in a stereo garage, the stereo garage comprises a plurality of parking modules arranged at equal intervals along a vertical direction, the plurality of parking modules all comprise a metal vehicle loading plate, and the rear ends of the plurality of parking modules are all provided with a transmitting coil Lp ;

待充电车辆的底部与顶部均设置有车载电极板,待充电车辆的后部设置有接收线圈Ls,所述车载电极板均与所述金属载车板平行设置,待充电车辆的两个车载电极板分别与待充电车辆停放的金属载车板以及其上方停车模块的金属载车板构成两组电场耦合模块,所述发射线圈Lp与接收线圈Ls构成磁场耦合模块。The bottom and top of the vehicle to be charged are both provided with on-board electrode plates, and the rear of the vehicle to be charged is provided with a receiving coil Ls . The on-board electrode plates are all arranged in parallel with the metal vehicle-carrying plate. The two on-board electrode plates of the vehicle to be charged respectively form two groups of electric field coupling modules with the metal vehicle-carrying plate on which the vehicle to be charged is parked and the metal vehicle-carrying plate of the parking module above it, and the transmitting coil Lp and the receiving coil Ls form a magnetic field coupling module.

一种能信同传系统,包括上述的立体车库中电场-磁场混合式耦合机构。A simultaneous transmission system includes the above-mentioned electric field-magnetic field hybrid coupling mechanism in the stereo garage.

可选的,还包括能量传输电路,所述能量传输电路包括电源模块、原边电能变换模块、副边电能变换模块和负载RLOptionally, it further includes an energy transmission circuit, wherein the energy transmission circuit includes a power supply module, a primary power conversion module, a secondary power conversion module and a load RL ;

所述原边电能变换模块的输入端与电源模块连接,所述原边电能变换模块的输出端与发射线圈Lp连通,所述副边电能变换模块的输入端与接收线圈Ls连通,所述副边电能变换模块的输出端与负载RL连通。The input end of the primary power conversion module is connected to the power supply module, the output end of the primary power conversion module is connected to the transmitting coil Lp , the input end of the secondary power conversion module is connected to the receiving coil Ls , and the output end of the secondary power conversion module is connected to the load RL .

可选的,还包括信号传输电路,所述信号传输电路包括原边调制解调模块和副边调制解调模块;Optionally, it further includes a signal transmission circuit, wherein the signal transmission circuit includes a primary side modulation and demodulation module and a secondary side modulation and demodulation module;

所述原边调制解调模块串接在所述发射线圈Lp一端,所述待充电车辆停放的金属载车板以及其上方停车模块的金属载车板均通过控制开关Si与发射线圈Lp另一端以及原边调制解调模块连通;The primary side modulation and demodulation module is connected in series to one end of the transmitting coil L p , and the metal vehicle loading plate on which the vehicle to be charged is parked and the metal vehicle loading plate of the parking module above it are connected to the other end of the transmitting coil L p and the primary side modulation and demodulation module through the control switch S i ;

所述副边调制解调模块串接在所述接收线圈Ls一端,待充电车辆的底部和顶部的车载电极板均与接收线圈Ls另一端以及副边调制解调模块连通。The secondary side modulation and demodulation module is connected in series to one end of the receiving coil Ls , and the vehicle-mounted electrode plates at the bottom and top of the vehicle to be charged are connected to the other end of the receiving coil Ls and the secondary side modulation and demodulation module.

可选的,所述原边电能变换模块包括高频逆变电路、原边LCC补偿电路和原边功率高频阻波网络子模块;Optionally, the primary power conversion module includes a high-frequency inverter circuit, a primary LCC compensation circuit and a primary power high-frequency wave blocking network submodule;

所述高频逆变电路输入端与电源模块连接,所述原边LCC补偿电路的输入端与高频逆变电路输出端连接,所述原边功率高频阻波网络子模块的一端与所述原边LCC补偿电路的一端连接,所述原边功率高频阻波网络子模块的另一端与所述原边LCC补偿电路的另一端分别与发射线圈Lp的两端连通。The input end of the high-frequency inverter circuit is connected to the power module, the input end of the primary LCC compensation circuit is connected to the output end of the high-frequency inverter circuit, one end of the primary power high-frequency blocking network submodule is connected to one end of the primary LCC compensation circuit, and the other end of the primary power high-frequency blocking network submodule and the other end of the primary LCC compensation circuit are respectively connected to the two ends of the transmitting coil Lp .

可选的,所述副边电能变换模块包括副边功率补偿电容Cs、整流电路和副边功率高频阻波网络子模块;Optionally, the secondary side power conversion module includes a secondary side power compensation capacitor C s , a rectifier circuit and a secondary side power high frequency wave blocking network submodule;

所述接收线圈Ls的一端与整流电路的一个输入端连通,所述接收线圈Ls的另一端与副边功率高频阻波网络子模块的一端连通,所述副边功率高频阻波网络子模块的另一端与副边功率补偿电容Cs的一端连通,所述副边功率补偿电容Cs的另一端与整流电路的另一个输入端连通,所述整流电路的输出端与负载RL连通。One end of the receiving coil Ls is connected to an input end of the rectifier circuit, the other end of the receiving coil Ls is connected to one end of the secondary power high-frequency wave blocking network submodule, the other end of the secondary power high-frequency wave blocking network submodule is connected to one end of the secondary power compensation capacitor Cs , the other end of the secondary power compensation capacitor Cs is connected to another input end of the rectifier circuit, and the output end of the rectifier circuit is connected to the load RL .

可选的,所述原边功率高频阻波网络子模块包括串联的第一原边功率高频阻波网络和第二原边功率高频阻波网络;Optionally, the primary power high-frequency wave-blocking network submodule includes a first primary power high-frequency wave-blocking network and a second primary power high-frequency wave-blocking network connected in series;

所述副边功率高频阻波网络子模块包括串联的第一副边功率高频阻波网络和第二副边功率高频阻波网络。The secondary side power high frequency wave choke network submodule comprises a first secondary side power high frequency wave choke network and a second secondary side power high frequency wave choke network connected in series.

可选的,所述原边调制解调模块包括原边信号调制子模块和原边信号解调子模块;Optionally, the primary side modulation and demodulation module includes a primary side signal modulation submodule and a primary side signal demodulation submodule;

所述原边信号调制子模块和原边信号解调子模块并联,所述原边信号调制子模块包括串联的原边信号调制电路Us1和第一原边信号高频阻波网络,所述原边信号解调子模块包括串联的原边采样电阻Rs1与第二原边信号高频阻波网络。The primary signal modulation submodule and the primary signal demodulation submodule are connected in parallel, the primary signal modulation submodule includes a primary signal modulation circuit U s1 and a first primary signal high-frequency blocking network connected in series, and the primary signal demodulation submodule includes a primary sampling resistor R s1 and a second primary signal high-frequency blocking network connected in series.

可选的,所述副边调制解调模块包括副边信号调制子模块和副边信号解调子模块;Optionally, the secondary side modulation and demodulation module includes a secondary side signal modulation submodule and a secondary side signal demodulation submodule;

所述副边信号调制子模块和副边信号解调子模块并联,所述副边信号调制子模块包括串联的副边信号调制电路Us2和第一副边信号高频阻波网络,所述副边信号解调子模块包括串联的副边采样电阻Rs2与第二副边信号高频阻波网络。The secondary signal modulation submodule and the secondary signal demodulation submodule are connected in parallel, the secondary signal modulation submodule includes a secondary signal modulation circuit U s2 and a first secondary signal high-frequency blocking network connected in series, and the secondary signal demodulation submodule includes a secondary sampling resistor R s2 and a second secondary signal high-frequency blocking network connected in series.

可选的,所述原边信号调制电路Us1和副边信号调制电路Us2均采用开关键控OOK方式调制信号。Optionally, both the primary-side signal modulation circuit U s1 and the secondary-side signal modulation circuit U s2 adopt an on-off keying (OOK) method to modulate signals.

由于采用了上述技术方案,本发明具有如下的优点:Due to the adoption of the above technical solution, the present invention has the following advantages:

本申请根据立体车库的结构特点,基于载车板构建六电容交叉耦合模型,并作为信号传输通道,将磁场耦合机构作为电能传输通道。并基于不同的载波频率设计了LC并联谐振网络作为阻波器,确保既定频率的信号能顺利通过,而阻碍另一频率的信号,且没有时延,从而实现全双工传输。According to the structural characteristics of the stereo garage, this application constructs a six-capacitor cross-coupling model based on the vehicle carrier and uses it as a signal transmission channel, and uses the magnetic field coupling mechanism as an electric energy transmission channel. Based on different carrier frequencies, an LC parallel resonant network is designed as a wave blocker to ensure that the signal of a given frequency can pass smoothly, while blocking the signal of another frequency without delay, thereby achieving full-duplex transmission.

本发明的其他优点、目标和特征在某种程度上将在随后的说明书中进行阐述,并且在某种程度上,基于对下文的考察研究对本领域技术人员而言将是显而易见的,或者可以从本发明的实践中得到教导。本发明的目标和其他优点可以通过下面的说明书和权利要求书来实现和获得。Other advantages, objectives and features of the present invention will be described in the following description to some extent, and to some extent, will be obvious to those skilled in the art based on the following examination and study, or can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description and claims.

附图说明BRIEF DESCRIPTION OF THE DRAWINGS

本发明的附图说明如下。The accompanying drawings of the present invention are as follows.

图1为本发明立体车库中能信同传系统的原理图。FIG. 1 is a schematic diagram of a simultaneous transmission system for signals in a stereoscopic parking garage according to the present invention.

图2为本发明两组电场耦合模块的等效电路图。FIG. 2 is an equivalent circuit diagram of two groups of electric field coupling modules of the present invention.

图3为本发明能信同传系统的电路拓扑图。FIG3 is a circuit topology diagram of the simultaneous interpretation system of the present invention.

图4为本发明电能传输模式下电能传输电路拓扑图。FIG. 4 is a topological diagram of a power transmission circuit in a power transmission mode of the present invention.

图5为本发明信号传输模式信号正向传输电路拓扑图。FIG. 5 is a topological diagram of a signal forward transmission circuit in a signal transmission mode of the present invention.

图6为本发明图5中正向传输电路的T型解耦等效电路图。FIG. 6 is a T-type decoupling equivalent circuit diagram of the forward transmission circuit in FIG. 5 of the present invention.

图7为本发明系统电能对信号的串扰等效电路图。FIG. 7 is an equivalent circuit diagram of the crosstalk of electric energy to signals in the system of the present invention.

图8为本发明系统正向传输信号串扰等效电路图。FIG8 is an equivalent circuit diagram of the forward transmission signal crosstalk of the system of the present invention.

图9为本发明仿真时系统只有电能传输时的逆变输出波形图。FIG. 9 is a waveform diagram of the inverter output when only electric energy is transmitted in the system during the simulation of the present invention.

图10为本发明仿真时系统只有电能传输时的负载波形图。FIG. 10 is a load waveform diagram when only electric energy is transmitted in the system during simulation of the present invention.

图11为本发明仿真时系统只有信号传输下的仿真波形图。FIG. 11 is a simulation waveform diagram of the present invention when the system has only signal transmission during simulation.

图12为本发明仿真时系统电能与信号同步传输时的信号波形图。FIG. 12 is a signal waveform diagram of the synchronous transmission of system power and signal during the simulation of the present invention.

图13为本发明仿真时系统电能对信号传输的串扰波形图线。FIG. 13 is a crosstalk waveform diagram of system power on signal transmission during simulation of the present invention.

图14为本发明仿真时系统信号传输过程Us1对Rs2串扰图。FIG. 14 is a diagram showing the crosstalk between U s1 and R s2 during the system signal transmission process during the simulation of the present invention.

图15为本发明仿真时系统信号传输过程Us2对Rs1串扰图。FIG. 15 is a diagram showing the crosstalk of U s2 to R s1 during the system signal transmission process during the simulation of the present invention.

图中:1-金属载车板;2-车载电极板。In the figure: 1-metal vehicle-carrying plate; 2-vehicle-carrying electrode plate.

具体实施方式DETAILED DESCRIPTION

下面结合附图和实施例对本发明作进一步说明。The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

实施例1:Embodiment 1:

如图1所示的一种立体车库中电场-磁场混合式耦合机构,立体车库包括沿竖直方向等间距设置的若干停车模块,若干所述停车模块均包括金属载车板1,若干所述停车模块的后端均设置有发射线圈LpAs shown in FIG1 , an electric field-magnetic field hybrid coupling mechanism in a stereo garage comprises a plurality of parking modules arranged at equal intervals in the vertical direction, wherein the plurality of parking modules all comprise a metal vehicle loading plate 1, and a transmitting coil L p is arranged at the rear end of the plurality of parking modules;

待充电车辆的底部与顶部均设置有车载电极板2,待充电车辆的后部设置有接收线圈Ls,所述车载电极板2均与所述金属载车板1平行设置,待充电车辆的两个车载电极板2分别与待充电车辆停放的金属载车板1以及其上方停车模块的金属载车板1构成两组电场耦合模块,所述发射线圈Lp与接收线圈Ls构成磁场耦合模块。The bottom and top of the vehicle to be charged are both provided with vehicle-mounted electrode plates 2, and the rear of the vehicle to be charged is provided with a receiving coil Ls . The vehicle-mounted electrode plates 2 are both arranged in parallel with the metal vehicle-mounting plate 1. The two vehicle-mounted electrode plates 2 of the vehicle to be charged respectively form two groups of electric field coupling modules with the metal vehicle-mounting plate 1 on which the vehicle to be charged is parked and the metal vehicle-mounting plate 1 of the parking module above it, and the transmitting coil Lp and the receiving coil Ls form a magnetic field coupling module.

在本实施中,立体车库为垂直旋转式立体车库,分别在电源端和车载端装有电能变换装置和信号发送与接收模块,电能传输通道主要由磁场耦合模块构成,信号传输通道由磁场耦合线圈和电场耦合电极共同构成。在高频交变电场的作用下,两组电场耦合模块构成如图2(a)所示的六个交叉耦合电容,六电容交叉耦合模型可以等效为如图2(b)所示三电容π模型,三电容π模型可以等效为如图2(c)所示的三电容T模型。In this embodiment, the stereo garage is a vertical rotating stereo garage, and an electric energy conversion device and a signal sending and receiving module are installed at the power supply end and the vehicle end respectively. The electric energy transmission channel is mainly composed of a magnetic field coupling module, and the signal transmission channel is composed of a magnetic field coupling coil and an electric field coupling electrode. Under the action of a high-frequency alternating electric field, two groups of electric field coupling modules constitute six cross-coupled capacitors as shown in FIG2(a). The six-capacitor cross-coupling model can be equivalent to a three-capacitor π model as shown in FIG2(b), and the three-capacitor π model can be equivalent to a three-capacitor T model as shown in FIG2(c).

实施例2:Embodiment 2:

如图1和图3所所示的一种能信同传系统,包括上所述的立体车库中电场-磁场混合式耦合机构;还包括能量传输电路,所述能量传输电路包括电源模块、原边电能变换模块、副边电能变换模块和负载RLAs shown in FIG. 1 and FIG. 3 , a simultaneous energy and signal transmission system includes the electric field-magnetic field hybrid coupling mechanism in the stereo garage described above; and also includes an energy transmission circuit, wherein the energy transmission circuit includes a power supply module, a primary power conversion module, a secondary power conversion module and a load RL ;

所述原边电能变换模块的输入端与电源模块连接,所述原边电能变换模块的输出端与发射线圈Lp连通,所述副边电能变换模块的输入端与接收线圈Ls连通,所述副边电能变换模块的输出端与负载RL连通。The input end of the primary power conversion module is connected to the power supply module, the output end of the primary power conversion module is connected to the transmitting coil Lp , the input end of the secondary power conversion module is connected to the receiving coil Ls , and the output end of the secondary power conversion module is connected to the load RL .

在本实施例中,电源模块为直流电源Udc,负载RL为待充电车辆的电池模块。In this embodiment, the power module is a DC power supply U dc , and the load RL is a battery module of a vehicle to be charged.

作为本发明的一种实施例,还包括信号传输电路,所述信号传输电路包括原边调制解调模块和副边调制解调模块;As an embodiment of the present invention, it also includes a signal transmission circuit, and the signal transmission circuit includes a primary side modulation and demodulation module and a secondary side modulation and demodulation module;

所述原边调制解调模块串接在所述发射线圈Lp一端,所述待充电车辆停放的金属载车板1以及其上方停车模块的金属载车板1均通过控制开关Si与发射线圈Lp另一端以及原边调制解调模块连通;The primary side modulation and demodulation module is connected in series to one end of the transmitting coil L p , and the metal vehicle loading plate 1 on which the vehicle to be charged is parked and the metal vehicle loading plate 1 of the parking module above it are connected to the other end of the transmitting coil L p and the primary side modulation and demodulation module through the control switch S i ;

所述副边调制解调模块串接在所述接收线圈Ls一端,待充电车辆的底部和顶部的车载电极板2均与接收线圈Ls另一端以及副边调制解调模块连通。The secondary side modulation and demodulation module is connected in series to one end of the receiving coil Ls , and the vehicle-mounted electrode plates 2 at the bottom and top of the vehicle to be charged are connected to the other end of the receiving coil Ls and the secondary side modulation and demodulation module.

在本实施例中,如图1所示,最下方的待充电车辆停放的金属载车板1以及其上方停车模块的金属载车板1分别通过控制开关S1和S2与发射线圈Lp另一端以及原边调制解调模块连通,当最下方的需要的待充电车辆需要进行信号传输时,断开控制开关S3并闭合控制开关S1和S2,当需要对第二层的待充电车辆进行信号传输时,则断开控制开关S2并闭合S3和S4,依次类推。In this embodiment, as shown in FIG1 , the metal vehicle loading plate 1 on which the lowest vehicle to be charged is parked and the metal vehicle loading plate 1 of the parking module above it are connected to the other end of the transmitting coil L p and the primary side modulation and demodulation module through control switches S 1 and S 2 , respectively. When the lowest vehicle to be charged needs to transmit a signal, the control switch S 3 is disconnected and the control switches S 1 and S 2 are closed. When the vehicle to be charged on the second layer needs to transmit a signal, the control switch S 2 is disconnected and S 3 and S 4 are closed, and so on.

作为本发明的一种实施例,所述原边电能变换模块包括高频逆变电路、原边LCC补偿电路和原边功率高频阻波网络子模块;As an embodiment of the present invention, the primary power conversion module includes a high-frequency inverter circuit, a primary LCC compensation circuit and a primary power high-frequency wave blocking network submodule;

所述高频逆变电路输入端与电源模块连接,所述原边LCC补偿电路的输入端与高频逆变电路输出端连接,所述原边功率高频阻波网络子模块的一端与所述原边LCC补偿电路的一端连接,所述原边功率高频阻波网络子模块的另一端与所述原边LCC补偿电路的另一端分别与发射线圈Lp的两端连通。The input end of the high-frequency inverter circuit is connected to the power module, the input end of the primary LCC compensation circuit is connected to the output end of the high-frequency inverter circuit, one end of the primary power high-frequency blocking network submodule is connected to one end of the primary LCC compensation circuit, and the other end of the primary power high-frequency blocking network submodule and the other end of the primary LCC compensation circuit are respectively connected to the two ends of the transmitting coil Lp .

作为本发明的一种实施例,所述副边电能变换模块包括副边功率补偿电容Cs、整流电路和副边功率高频阻波网络子模块;As an embodiment of the present invention, the secondary side power conversion module includes a secondary side power compensation capacitor C s , a rectifier circuit and a secondary side power high frequency wave blocking network submodule;

所述接收线圈Ls的一端与整流电路的一个输入端连通,所述接收线圈Ls的另一端与副边功率高频阻波网络子模块的一端连通,所述副边功率高频阻波网络子模块的另一端与副边功率补偿电容Cs的一端连通,所述副边功率补偿电容Cs的另一端与整流电路的另一个输入端连通,所述整流电路的输出端与负载RL连通。One end of the receiving coil Ls is connected to an input end of the rectifier circuit, the other end of the receiving coil Ls is connected to one end of the secondary power high-frequency wave blocking network submodule, the other end of the secondary power high-frequency wave blocking network submodule is connected to one end of the secondary power compensation capacitor Cs , the other end of the secondary power compensation capacitor Cs is connected to another input end of the rectifier circuit, and the output end of the rectifier circuit is connected to the load RL .

在本实施例中,如图3所示,原边LCC补偿电路包括电感Lf1、电容Cf1和电容Cp,高频逆变电路为由四个MOSFET管S1-S4组成的高频逆变器,整流电路由四个整流桥二极管D1-D4构成。In this embodiment, as shown in FIG3 , the primary LCC compensation circuit includes an inductor L f1 , a capacitor C f1 and a capacitor C p , the high-frequency inverter circuit is a high-frequency inverter composed of four MOSFET tubes S 1 -S 4 , and the rectifier circuit is composed of four rectifier bridge diodes D 1 -D 4 .

作为本发明的一种实施例,所述原边功率高频阻波网络子模块包括串联的第一原边功率高频阻波网络和第二原边功率高频阻波网络;所述副边功率高频阻波网络子模块包括串联的第一副边功率高频阻波网络和第二副边功率高频阻波网络。As an embodiment of the present invention, the primary power high-frequency wave-blocking network submodule includes a first primary power high-frequency wave-blocking network and a second primary power high-frequency wave-blocking network connected in series; the secondary power high-frequency wave-blocking network submodule includes a first secondary power high-frequency wave-blocking network and a second secondary power high-frequency wave-blocking network connected in series.

在本实施例中,第一原边功率高频阻波网络包括相互并联的电容Ct1和电感Lt1,第二原边功率高频阻波网络包括相互并联的电容Ct2和电感Lt2,第一副边功率高频阻波网络包括相互并联的电容Cr1和电感Lr1,第二副边功率高频阻波网络包括相互并联的电容Cr2和电感Lr2In this embodiment, the first primary power high-frequency wave choke network includes a capacitor C t1 and an inductor L t1 connected in parallel, the second primary power high-frequency wave choke network includes a capacitor C t2 and an inductor L t2 connected in parallel, the first secondary power high-frequency wave choke network includes a capacitor C r1 and an inductor L r1 connected in parallel, and the second secondary power high-frequency wave choke network includes a capacitor C r2 and an inductor L r2 connected in parallel.

作为本发明的一种实施例,所述原边调制解调模块包括原边信号调制子模块和原边信号解调子模块;As an embodiment of the present invention, the primary side modulation and demodulation module includes a primary side signal modulation submodule and a primary side signal demodulation submodule;

所述原边信号调制子模块和原边信号解调子模块并联,所述原边信号调制子模块包括串联的原边信号调制电路Us1和第一原边信号高频阻波网络,所述原边信号解调子模块包括串联的原边采样电阻Rs1与第二原边信号高频阻波网络。The primary signal modulation submodule and the primary signal demodulation submodule are connected in parallel, the primary signal modulation submodule includes a primary signal modulation circuit U s1 and a first primary signal high-frequency blocking network connected in series, and the primary signal demodulation submodule includes a primary sampling resistor R s1 and a second primary signal high-frequency blocking network connected in series.

作为本发明的一种实施例,所述副边调制解调模块包括副边信号调制子模块和副边信号解调子模块;As an embodiment of the present invention, the secondary side modulation and demodulation module includes a secondary side signal modulation submodule and a secondary side signal demodulation submodule;

所述副边信号调制子模块和副边信号解调子模块并联,所述副边信号调制子模块包括串联的副边信号调制电路Us2和第一副边信号高频阻波网络,所述副边信号解调子模块包括串联的副边采样电阻Rs2与第二副边信号高频阻波网络。The secondary signal modulation submodule and the secondary signal demodulation submodule are connected in parallel, the secondary signal modulation submodule includes a secondary signal modulation circuit U s2 and a first secondary signal high-frequency blocking network connected in series, and the secondary signal demodulation submodule includes a secondary sampling resistor R s2 and a second secondary signal high-frequency blocking network connected in series.

在本实施例中,第一原边信号高频阻波网络包括相互并联的电容C2和电感L2,第二原边功率高频阻波网络包括相互并联的电容C1和电感L1,第一副边功率高频阻波网络包括相互并联的电容C3和电感L3,第二副边功率高频阻波网络包括相互并联的电容C4和电感L4In this embodiment, the first primary signal high-frequency wave blocking network includes a capacitor C2 and an inductor L2 connected in parallel, the second primary power high-frequency wave blocking network includes a capacitor C1 and an inductor L1 connected in parallel, the first secondary power high-frequency wave blocking network includes a capacitor C3 and an inductor L3 connected in parallel, and the second secondary power high-frequency wave blocking network includes a capacitor C4 and an inductor L4 connected in parallel.

作为本发明的一种实施例,所述原边信号调制电路Us1和副边信号调制电路Us2均采用开关键控OOK调制方法产生信号载波,其原理可以表示为:As an embodiment of the present invention, the primary signal modulation circuit U s1 and the secondary signal modulation circuit U s2 both use an on-off keying OOK modulation method to generate a signal carrier, and the principle thereof can be expressed as follows:

式中:A和ωs分别为载波信号的幅值和角频率,当传输的数据为“1”时,信号载波则为正弦波,为“0”时,则在信号通路上没有载波。Where: A and ωs are the amplitude and angular frequency of the carrier signal respectively. When the transmitted data is "1", the signal carrier is a sine wave. When it is "0", there is no carrier in the signal path.

在本实施例中,在当只考虑单辆车无线充电的情况时,全双工无线电能与信号并行传输系统电路拓扑如图3所示。图中,Udc为直流输入电压,经高频逆变后注入原边LCC补偿电路,逆变输出电压的角频率为ω(ω=2πf),在磁场耦合线圈的作用下,实现电能传输。Us1和Us2分别为电源端和车载端调制后的等效交流信号源,其角频率分别为ω1和ω2(设定ω12),Rs1和Rs2分别为车载端和电源端的信号采样电阻,在电场耦合电极和磁场耦合线圈的作用下,实现全双工通信。In this embodiment, when only a single vehicle is considered for wireless charging, the circuit topology of the full-duplex wireless power and signal parallel transmission system is shown in FIG3. In the figure, U dc is a DC input voltage, which is injected into the primary LCC compensation circuit after high-frequency inversion. The angular frequency of the inverter output voltage is ω (ω=2πf). Under the action of the magnetic field coupling coil, power transmission is achieved. U s1 and U s2 are the equivalent AC signal sources modulated by the power supply end and the vehicle end, respectively, and their angular frequencies are ω 1 and ω 2 (set ω 12 ), respectively. R s1 and R s2 are the signal sampling resistors of the vehicle end and the power supply end, respectively. Under the action of the electric field coupling electrode and the magnetic field coupling coil, full-duplex communication is achieved.

在本实施例中,四组高频阻波网络(Ct1,Lt1)、(Ct2,Lt2)、(Cr1,Lr1)和(Cr2,Lr2)的LC元件均满足并联谐振关系,其谐振角频率分别为ω1和ω21=2πf12=2πf2),可以有效降低信号对电能的串扰,进一步提升电能质量。同理四组高频阻波网络(C1,L1)、(C2,L2)、(C3,L3)和(C4,L4)其谐振频率也分别为ω1和ω2 因此,频率为ω1的信号源Us1无法在采样电阻Rs2上产生响应,频率为ω2的信号源Us2则无法在采样电阻Rs1上产生响应。由于在磁场耦合电能传输模式下,其工作角频率ω远小于信号传输角频率ω1和ω2,而金属载车板1与车载电极板2构成的耦合电容极小(pF级),因此电场耦合机构的容抗非常大,可以近似为断路。相反,在信号传输模式下,该电场耦合机构作为主要传输通道。In this embodiment, the LC elements of the four sets of high-frequency wave-blocking networks (C t1 , L t1 ), (C t2 , L t2 ), (C r1 , L r1 ) and (C r2 , L r2 ) all satisfy the parallel resonance relationship, and their resonant angular frequencies are ω 1 and ω 2 respectively (ω 1 =2πf 12 =2πf 2 ). It can effectively reduce the crosstalk of signals to electric energy and further improve the quality of electric energy. Similarly, the resonant frequencies of the four groups of high-frequency wave blocking networks (C 1 , L 1 ), (C 2 , L 2 ), (C 3 , L 3 ) and (C 4 , L 4 ) are also ω 1 and ω 2 respectively. Therefore, the signal source U s1 with a frequency of ω 1 cannot generate a response on the sampling resistor R s2 , and the signal source U s2 with a frequency of ω 2 cannot generate a response on the sampling resistor R s1 . Since in the magnetic field coupling power transmission mode, its operating angular frequency ω is much smaller than the signal transmission angular frequencies ω 1 and ω 2 , and the coupling capacitance formed by the metal vehicle plate 1 and the vehicle-mounted electrode plate 2 is extremely small (pF level), the capacitive reactance of the electric field coupling mechanism is very large and can be approximated as an open circuit. On the contrary, in the signal transmission mode, the electric field coupling mechanism serves as the main transmission channel.

下面对本申请的能信同传系统的性能进行分析。The performance of the simultaneous interpretation system of this application is analyzed below.

S1.1对电能传输模式系统的性能进行分析:在电能传输模式下,电场耦合机构可视为开路。此外,由于ω12>>ω,则:S1.1 analyzes the performance of the power transmission mode system: In the power transmission mode, the electric field coupling mechanism can be regarded as an open circuit. In addition, since ω 12 >>ω, then:

即阻波网络的电容均可视为开路,因此,电能传输电路可以等效为如图4所示的LCC-S结构,图中Uac为逆变输出交流电压,Req为交流等效负载电阻(其中:Req=8RL2),Lteq为发射端阻波网络的等效电感(其中:Lteq≈Lt1+Lt2),Lreq为接收端阻波网络的等效电感(Lreq≈Lr1+Lr2),电路各参数满足如下谐振关系:That is, the capacitors of the wave-blocking network can be regarded as open circuits. Therefore, the power transmission circuit can be equivalent to the LCC-S structure shown in Figure 4, where U ac is the inverter output AC voltage, Req is the AC equivalent load resistance (where: Req = 8R L2 ), Lteq is the equivalent inductance of the wave-blocking network at the transmitting end (where: Lteq ≈Lt1 + Lt2 ), and Lreq is the equivalent inductance of the wave-blocking network at the receiving end ( Lreq ≈Lr1 + Lr2 ). The circuit parameters satisfy the following resonance relationship:

由此可以得出电路输入阻抗为:From this we can conclude that the circuit input impedance is:

发射端线圈电流为:The transmitting coil current is:

进一步得到电能传输增益为:The power transfer gain is further obtained as:

实际应用中,会先给定系统工作频率、输入电压和耦合线圈,即ω、Uac、Lp、Ls和M为已知;根据应用中的充电功率需求Preq=(UacGp)2/Req,可以得出电感Lf1的表达式为:In practical applications, the system operating frequency, input voltage and coupling coil are given first, that is, ω, U ac , L p , L s and M are known; according to the charging power requirement Preq = (U ac G p ) 2 / Req in the application, the expression of the inductance L f1 can be obtained as:

根据电感电容谐振关系可以得出Cf1=1/ω2Lf1,图中电感Lteq和Lreq以及电容Cp和Cs将通过信号传输模式和串扰模式下的参数关系设计来确定。According to the resonant relationship between inductance and capacitance, it can be obtained that C f1 =1/ω 2 L f1 . In the figure, the inductance L teq and L req and the capacitance C p and C s will be determined by designing the parameter relationship in the signal transmission mode and the crosstalk mode.

S1:2对信号传输模式系统的性能进行分析:S1:2 Analyze the performance of the signal transmission mode system:

由图3可知信号传输电路结构对称,因此正向传输模式和反向传输模式的分析方法一致,本文只对正向传输模式进行分析。在信号正向传输模式下,根据叠加原理,信号源Us2可视为短路;在频率为ω1的信号源Us1的作用下,(Ct1,Lt1),(C1,L1),(Cr1,Lr1),(C3,L3)均断路,因此,信号正向传输电路拓扑如图5所示。结合图2所示等效变换和耦合线圈的去耦等效原理,可以将图5所示电路等效为图6所示电路,图中:As shown in Figure 3, the structure of the signal transmission circuit is symmetrical, so the analysis methods of the forward transmission mode and the reverse transmission mode are consistent. This article only analyzes the forward transmission mode. In the forward transmission mode of the signal, according to the superposition principle, the signal source U s2 can be regarded as a short circuit; under the action of the signal source U s1 with a frequency of ω 1 , (C t1 ,L t1 ), (C 1 ,L 1 ), (C r1 ,L r1 ), (C 3 ,L 3 ) are all open circuits, so the topology of the forward transmission circuit of the signal is shown in Figure 5. Combined with the equivalent transformation shown in Figure 2 and the decoupling equivalent principle of the coupling coil, the circuit shown in Figure 5 can be equivalent to the circuit shown in Figure 6, in which:

其中:in:

式中,Cπ1和Cπ2分别为等效π模型中的原边等效电容和副边等效电容,CM为等效π模型中原副边之间的互电容,Ci,j为交叉耦合模型中任意两极板间的电容,其中:i,j=1,2,3,4,且i≠j。Where Cπ1 and Cπ2 are the primary equivalent capacitance and the secondary equivalent capacitance in the equivalent π model, respectively; CM is the mutual capacitance between the primary and secondary sides in the equivalent π model; Ci ,j is the capacitance between any two plates in the cross-coupling model, where: i,j=1,2,3,4, and i≠j.

将图6所示电路分为两个回路,回路的电流分别为I1和I2,规定顺时针方向为正方向。根据基尔霍夫电压定律,列写回路方程:The circuit shown in Figure 6 is divided into two loops, the currents of the loops are I 1 and I 2 respectively, and the clockwise direction is defined as the positive direction. According to Kirchhoff's voltage law, the loop equation is listed as:

式中:Where:

可以计算出回路电流为:The loop current can be calculated as:

因此,正向传输时信号的增益模型则可以表示为:Therefore, the gain model of the signal during forward transmission can be expressed as:

S1:3对电能串扰模式系统的性能进行分析:S1:3 Analysis of the performance of the power crosstalk mode system:

电能串扰是指仅考虑电能输入情况下,信号采样电阻上的电压响应。电能串扰增益用来衡量电能传输对信号传输的影响,其值一般越小越好。根据图3所示结构,可以将系统的电能串扰模型等效为图7所示电路,图中:Power crosstalk refers to the voltage response on the signal sampling resistor when only power input is considered. Power crosstalk gain is used to measure the impact of power transmission on signal transmission, and the smaller the value, the better. According to the structure shown in Figure 3, the power crosstalk model of the system can be equivalent to the circuit shown in Figure 7, in which:

电能对信号的串扰主要来源于发射线圈与接收线圈的电压差,将图中LC阻波网络的阻抗分别表示为:The crosstalk of electric energy to the signal mainly comes from the voltage difference between the transmitting coil and the receiving coil. The impedance of the LC wave-blocking network in the figure is expressed as:

将图3所示电路分为两个回路,回路电流分别为Ic1和Ic2,其方向分别为逆时针和顺时针方向,根据基尔霍夫定律列写回路方程:The circuit shown in Figure 3 is divided into two loops. The loop currents are I c1 and I c2 , and their directions are counterclockwise and clockwise respectively. The loop equations are listed according to Kirchhoff's law:

式中:Where:

由此可以得到两回路电流分别为:From this we can get the currents of the two circuits are:

则采样电阻Rs1和Rs2两端的电压分别为:Then the voltages across the sampling resistors Rs1 and Rs2 are:

S1:4对信号串扰模式系统的性能进行分析:S1:4 Analysis of the performance of the signal crosstalk mode system:

对于信号正向传输而言,主要考虑接收端信号源Us2在Rs1上的串扰;对于信号反向传输而言,主要考虑发射端信号源Us1在Rs2上的串扰;根据电路的对称性,信号正向传输的和反向传输的串扰模型推导方法基本一致。当仅考虑Us2时,信号串扰电路可等效为如图8所示结构。For the forward transmission of the signal, the crosstalk of the receiving end signal source U s2 on R s1 is mainly considered; for the reverse transmission of the signal, the crosstalk of the transmitting end signal source U s1 on R s2 is mainly considered; according to the symmetry of the circuit, the derivation method of the crosstalk model of the forward and reverse transmission of the signal is basically the same. When only U s2 is considered, the signal crosstalk circuit can be equivalent to the structure shown in Figure 8.

在频率为ω2的情况下,将图中LC阻波网络的阻抗分别表示为:When the frequency is ω 2 , the impedance of the LC wave-blocking network in the figure is expressed as:

因此,图中的各级阻抗分别可以表示为:Therefore, the impedances of each level in the figure can be expressed as:

Us2在Rs1上的串扰模型可以表示为:The crosstalk model of U s2 on R s1 can be expressed as:

S2对系统进行仿真分析:S2 performs simulation analysis on the system:

针对立体车库中单台待充电车辆进行能信传输时进行仿真,基于Maxwell有限元仿真平台,分别建立磁场耦合模块和电场耦合模块的仿真模型,并进行仿真分析,得到相关电感和电容的参数,如表1所示。The energy and signal transmission of a single vehicle to be charged in a stereo garage is simulated. Based on the Maxwell finite element simulation platform, simulation models of the magnetic field coupling module and the electric field coupling module are established respectively, and simulation analysis is performed to obtain the parameters of the relevant inductance and capacitance, as shown in Table 1.

表1电场和磁场耦合模块参数Table 1 Electric field and magnetic field coupling module parameters

根据上述参数设计分析,以85kHz工作频率的无线电能传输系统为例,并根据经验选取原边补偿电感Lf1=10μH,并给定并联LC阻波网络的谐振频率ω1和ω2分别为2π*3*106和2π*2*106,则给出各阻波网络以及电路中的其他参数,如表2所示。According to the above parameter design analysis, taking the wireless power transmission system with an operating frequency of 85kHz as an example, and selecting the primary compensation inductor Lf1 = 10μH based on experience, and giving the resonant frequencies ω1 and ω2 of the parallel LC choke network as 2π*3* 106 and 2π*2* 106 respectively, the other parameters of each choke network and the circuit are given, as shown in Table 2.

表2系统参数Table 2 System parameters

基于上述参数对系统进行仿真,其仿真结果如图9、图10、图11、图12、图13、图14和图15所示。根据如图9和图10所示的系统只有电能传输时的逆变输出波形图和负载波形图可以推算出系统输出功率大于3.3kW。The system is simulated based on the above parameters, and the simulation results are shown in Figures 9, 10, 11, 12, 13, 14 and 15. According to the inverter output waveform and load waveform when only power is transmitted in the system as shown in Figures 9 and 10, it can be inferred that the system output power is greater than 3.3kW.

如图11所示的系统只有信号传输下的仿真波形图,第一个波形为调制频率为100kHz的发射端信号电压,第二个波形为接收端的信号电压,调制频率也为100kHz,后两个波形分别为接收端和发射端输出信号波形。The system shown in Figure 11 is a simulation waveform diagram under signal transmission only. The first waveform is the signal voltage at the transmitting end with a modulation frequency of 100kHz, and the second waveform is the signal voltage at the receiving end, with a modulation frequency of 100kHz. The latter two waveforms are the output signal waveforms of the receiving end and the transmitting end respectively.

如图12所示的系统电能与信号同步传输时的信号波形图,通过对比图11可以发现,在加入电能通道后,电能对信号的传输有一定的影响,但影响不明显,后两个波形与前两个波形具有良好的对应性,这意味着信号可以被较好的解调出来,原因是文中所设计的阻波网络和电场耦合机构起到了隔离的作用。As shown in Figure 12, the signal waveform diagram of the system when the electric energy and signal are transmitted synchronously. By comparing with Figure 11, it can be found that after the electric energy channel is added, the electric energy has a certain influence on the transmission of the signal, but the influence is not obvious. The latter two waveforms have a good correspondence with the former two waveforms, which means that the signal can be demodulated well. The reason is that the wave blocking network and electric field coupling mechanism designed in this paper play an isolation role.

为了进一步说明电能对信号影响情况,参见如图13所示的电能对信号传输的串扰波形图,由图13可见在电能对信号的影响相比信号本身的幅值可以忽略不计。图14和图15分别给出了信号正向传输和反向传输过程中的串扰,如图14所示的信号传输过程Us1对Rs2串扰图,图14中第一个波形为Us1输入下,在Rs1上的输出,第二个波形为Us1输入下,在Rs2上的串扰;如图15所示的信号传输过程Us2对Rs1串扰图,图15中第一个波形为Us2输入下,在Rs1上的串扰,第二个波形为Us2输入下,在Rs2上的输出;由图14和图15可知信号之间的串扰很小,可以忽略不计。通过上述仿真分析可知,本文所提出的方法和系统能保证电能和信号实现全双工同步传输。To further illustrate the influence of electric energy on the signal, see the crosstalk waveform of electric energy on signal transmission shown in FIG13. It can be seen from FIG13 that the influence of electric energy on the signal can be ignored compared with the amplitude of the signal itself. FIG14 and FIG15 respectively show the crosstalk in the forward and reverse transmission of the signal. The crosstalk diagram of U s1 to R s2 in the signal transmission process shown in FIG14, the first waveform in FIG14 is the output on R s1 under U s1 input, and the second waveform is the crosstalk on R s2 under U s1 input; the crosstalk diagram of U s2 to R s1 in the signal transmission process shown in FIG15, the first waveform in FIG15 is the crosstalk on R s1 under U s2 input, and the second waveform is the output on R s2 under U s2 input; it can be seen from FIG14 and FIG15 that the crosstalk between the signals is very small and can be ignored. Through the above simulation analysis, it can be seen that the method and system proposed in this paper can ensure full-duplex synchronous transmission of electric energy and signals.

综上所述,本申请针对立体车库无线充电应用场景,基于电场和磁场混合式耦合机构提出一种全双工的电能与信号并行无线传输系统。两个信号载波基于OOK调制,通过单个变压器耦合与功率载波同步传输。分别分析了电能传输模式、信号传输模式、电能串扰模式和信号串扰模式四种情况下的电路参数设计方法,并给出了相应的电路仿真参数。在MATLAB/Simulink建立了系统仿真模型,实现了输出功率3.3kW、最大传输速率200kb/s的同时,分析了各种工作模式下传输性能,结果表明,所提出的系统能较好地实现电能与信号全双工并行传输,满足立体车库中无线充电的应用场景。In summary, this application proposes a full-duplex electric energy and signal parallel wireless transmission system based on a hybrid electric field and magnetic field coupling mechanism for the application scenario of wireless charging in a stereo garage. The two signal carriers are based on OOK modulation and are transmitted synchronously with the power carrier through a single transformer coupling. The circuit parameter design methods in four cases, namely, power transmission mode, signal transmission mode, power crosstalk mode and signal crosstalk mode, are analyzed respectively, and the corresponding circuit simulation parameters are given. A system simulation model was established in MATLAB/Simulink, and the output power of 3.3kW and the maximum transmission rate of 200kb/s were achieved. At the same time, the transmission performance under various working modes was analyzed. The results show that the proposed system can better realize full-duplex parallel transmission of electric energy and signals, meeting the application scenario of wireless charging in stereo garages.

最后应当说明的是:以上实施例仅用以说明本发明的技术方案而非对其限制,尽管参照上述实施例对本发明进行了详细的说明,所属领域的普通技术人员应当理解:依然可以对本发明的具体实施方式进行修改或者等同替换,而未脱离本发明精神和范围的任何修改或者等同替换,其均应涵盖在本发明的权利要求保护范围之内。Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents, and any modifications or equivalent replacements that do not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims (10)

1. The electric field-magnetic field hybrid coupling mechanism in the stereo garage comprises a plurality of parking modules which are arranged at equal intervals along the vertical direction, and is characterized in that the parking modules comprise metal car carrying plates (1), and the rear ends of the parking modules are provided with transmitting coils L p;
The bottom and the top of waiting to charge the vehicle all are provided with on-vehicle electrode plate (2), and the rear portion of waiting to charge the vehicle is provided with receiving coil L s, on-vehicle electrode plate (2) all with metal carries sweep (1) parallel arrangement, and two on-vehicle electrode plates (2) of waiting to charge the vehicle constitute two sets of electric field coupling modules with the metal that waits to charge the vehicle and carry sweep (1) and the metal that parks the module above thereof respectively, transmitting coil L p constitutes magnetic field coupling module with receiving coil L s.
2. An energy communication system, comprising the electric field-magnetic field hybrid coupling mechanism in the stereo garage of claim 1.
3. The energy co-transmission system of claim 2, further comprising an energy transfer circuit comprising a power module, a primary power conversion module, a secondary power conversion module, and a load R L;
The input end of the primary side electric energy conversion module is connected with the power supply module, the output end of the primary side electric energy conversion module is communicated with the transmitting coil L p, the input end of the secondary side electric energy conversion module is communicated with the receiving coil L s, and the output end of the secondary side electric energy conversion module is communicated with the load R L.
4. The energy co-transmission system of claim 2, further comprising a signal transmission circuit, wherein the signal transmission circuit comprises a primary side modem module and a secondary side modem module;
The primary side modem module is connected in series with one end of the transmitting coil L p, and the metal vehicle carrying plate (1) for parking the vehicle to be charged and the metal vehicle carrying plate (1) of the parking module above the metal vehicle carrying plate are communicated with the other end of the transmitting coil L p and the primary side modem module through the control switch S i;
The secondary side modem module is connected in series with one end of the receiving coil L s, and the vehicle-mounted electrode plates (2) at the bottom and the top of the vehicle to be charged are communicated with the other end of the receiving coil L s and the secondary side modem module.
5. A power co-transmission system according to claim 3, wherein the primary side power conversion module comprises a high frequency inverter circuit, a primary side LCC compensation circuit and a primary side power high frequency choke network submodule;
The input end of the high-frequency inverter circuit is connected with the power supply module, the input end of the primary side LCC compensation circuit is connected with the output end of the high-frequency inverter circuit, one end of the primary side power high-frequency wave-blocking network sub-module is connected with one end of the primary side LCC compensation circuit, and the other end of the primary side power high-frequency wave-blocking network sub-module is respectively communicated with two ends of the transmitting coil L p with the other end of the primary side LCC compensation circuit.
6. The energy co-transmission system according to claim 5, wherein the secondary side power conversion module comprises a secondary side power compensation capacitor C s, a rectifying circuit and a secondary side power high-frequency choke network submodule;
One end of the receiving coil L s is communicated with one input end of the rectifying circuit, the other end of the receiving coil L s is communicated with one end of the secondary side power high-frequency wave-blocking network submodule, the other end of the secondary side power high-frequency wave-blocking network submodule is communicated with one end of the secondary side power compensation capacitor C s, the other end of the secondary side power compensation capacitor C s is communicated with the other input end of the rectifying circuit, and the output end of the rectifying circuit is communicated with the load R L.
7. The energy co-transmission system according to claim 6, wherein the primary power high-frequency choke network submodule comprises a first primary power high-frequency choke network and a second primary power high-frequency choke network which are connected in series;
The secondary side power high-frequency wave-blocking network submodule comprises a first secondary side power high-frequency wave-blocking network and a second secondary side power high-frequency wave-blocking network which are connected in series.
8. The energy co-transmission system of claim 4, wherein the primary side modem module comprises a primary side signal modulation sub-module and a primary side signal demodulation sub-module;
The primary side signal modulation submodule is connected in parallel with the primary side signal demodulation submodule, the primary side signal modulation submodule comprises a primary side signal modulation circuit U s1 and a first primary side signal high-frequency wave-blocking network which are connected in series, and the primary side signal demodulation submodule comprises a primary side sampling resistor R s1 and a second primary side signal high-frequency wave-blocking network which are connected in series.
9. The energy co-transmission system of claim 8, wherein the secondary side modem module comprises a secondary side signal modulation sub-module and a secondary side signal demodulation sub-module;
The secondary side signal modulation submodule is connected in parallel with the secondary side signal demodulation submodule, the secondary side signal modulation submodule comprises a secondary side signal modulation circuit U s2 and a first secondary side signal high-frequency wave-blocking network which are connected in series, and the secondary side signal demodulation submodule comprises a secondary side sampling resistor R s2 and a second secondary side signal high-frequency wave-blocking network which are connected in series.
10. The energy co-transmission system of claim 9, wherein the primary side signal modulation circuit U s1 and the secondary side signal modulation circuit U s2 each modulate signals using an on-off keying OOK scheme.
CN202410217615.3A 2024-02-28 2024-02-28 Electric field-magnetic field hybrid coupling mechanism and its energy-signal simultaneous transmission system in stereo garage Pending CN118238641A (en)

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