Photovoltaic corridor electric energy-to-microwave emission and microwave vehicle-mounted receiving-to-electric energy conversion and corollary equipment

Abstract

The invention relates to a photovoltaic corridor electric energy-to-microwave emission and receiving microwave vehicle-mounted receiving-to-electric energy and corollary equipment system. Photovoltaic energy is converted into microwave emission to transmit corresponding microwave vehicle-mounted receiver-to-electric energy to be used by an electric vehicle. Through light-microwave-conversion emission, vehicle-mounted receiver miniaturization and dynamic safety control, efficient and safe road dynamic charging is realized. The system is suitable for electric vehicles, freight vehicles and public traffic scenes, realizes a dynamic charging system for the electric vehicles, solves the problem of switching equipment integrating photovoltaic power and electric vehicles, solves the problem of difficulty in land use of fixed charging piles, and enables the electric vehicles running on a road to be convenient to charge while running.

Description

Technical Field

[0001] The present invention relates to the field of new energy transportation and wireless charging technology, and specifically to a microwave transmission wireless charging system integrated in a photovoltaic corridor, comprising a corridor-side power-to-microwave conversion and transmission device and a vehicle-mounted microwave receiving-power-conversion-charging device to achieve dynamic wireless charging. Background Art

[0002] Photovoltaic new energy has become the main energy source in society, and new energy electric vehicles are developing rapidly. 1. Traditional photovoltaic corridors are used only for power generation, but they do not integrate with the charging needs of electric vehicles and address the specific technical and equipment issues of how to dynamically transmit and convert energy; 2. Existing microwave wireless charging systems are inefficient (<85%) and lack anti-interference design for in-vehicle environments; 3. The vehicle-mounted receiver is large in size and has poor heat dissipation, which affects the vehicle's safety performance. Technological gap: There is an urgent need for a set of high-efficiency conversion equipment for the entire transmission chain of photovoltaic power generation-microwave transmission-vehicle-mounted reception. Summary of the Invention

[0003] Technical Solution

[0004] The technical problem solved by the present invention can be achieved by adopting the following technical solutions:

[0005] The system consists of the corridor (including energy storage) side transmitting equipment:

[0006] Photovoltaic DC power → high-frequency inverter (GaN device, efficiency ≥ 98%) → 5.8GHz microwave transmitting array (phased array antenna, beam tracking error ≤ 0.3°);

[0007] Integrated radiation shielding layer (metal mesh + ferrite absorbing coating, leakage ≤ 0.05mW / cm 2 ). Vehicle-mounted receiving equipment:

[0008] Rectenna array: microstrip patch antenna + rectification using MEMS technology (efficiency ≥ 93%);

[0009] Adaptive impedance matching circuit: dynamically adjusts receiving parameters according to vehicle speed (response time ≤ 10ms);

[0010] Liquid cooling module: copper tube embedded cooling, temperature rise ≤ 15℃ (42% lower than CN110311211B), strict temperature control to achieve the best heat dissipation design effect.

[0011] Innovation 1.Optimization of the optical-electrical-microwave full link: Photovoltaic DC power is directly converted into microwaves, eliminating the AC / DC conversion process (efficiency increased by 7%). The corridor ceiling inclination design (20°-30°) simultaneously optimizes photovoltaic power generation and microwave coverage. 2. Miniaturization of vehicle-mounted receivers: The multi-layer PCB stacking design (size ≤400×300×50mm) is integrated into a suitable position on the vehicle chassis or upper body; the AI-based beam prediction algorithm calibrates the receiving direction in advance. 3. Integrated safety protection: The transmitter monitors the approach of living things in real time (millimeter wave radar), triggering a sudden power drop (down to 5% within 100ms); the receiver provides overvoltage protection (double protection of TVS diode + fuse). 4. Use the protrusion of the vehicle antenna to properly configure the decoration to reduce wind resistance on the one hand, and brighten the advertising and warning functions on the other hand.

[0012] Technical Effects 1. System overall efficiency ≥ 90% (measured photovoltaic → vehicle battery); 2. The vehicle receiver weighs ≤6-8kg and is suitable for mainstream electric vehicles; 3. Charging power 30-50kW (±5% fluctuation when vehicle speed ≤ 100km / h). The technical problem solved by the present invention can be achieved by adopting the following technical solutions: BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0014] Figure 1 This is a schematic diagram of a photovoltaic corridor power conversion microwave transmission and microwave vehicle-mounted receiving power conversion supporting equipment provided in some embodiments of the present invention.

[0015] Figure 2 Schematic diagram of the corridor-side electric energy-microwave transmitting device (including photovoltaic array, phased array antenna, shielding layer) and vehicle-mounted receiver cross-section (labeled with antenna layer, rectifying layer, heat dissipation layer);

[0016] Example 1

[0017] See Figure 1As shown, it shows a schematic diagram of a photovoltaic corridor power conversion device for microwave transmission and microwave vehicle receiver conversion to power in some embodiments of the present invention. System architecture diagram (photovoltaic → inverter → transmission → reception → electric vehicle); The photovoltaic corridor electric energy is converted into microwave emission and receiving microwave vehicle-mounted receiver to convert electric energy and supporting equipment, including 1. photovoltaic corridor column support, 2. photovoltaic corridor beam, 3. photovoltaic module, 4. photovoltaic module bracket, 1, 2, 3, 4, etc. are photovoltaic arrays; 5. Energy microwave transmitter, including inverter transmission; 6. Microwave receiving energy converter, receiving; 7. Electric vehicle, charging and energy supply;.

[0018] Example 2

[0019] See Figure 2 As shown, in order to convert a photovoltaic corridor electric energy into microwave transmitting and receiving microwave on-board receiver and convert it into electric energy supporting equipment, the system technology implementation includes photovoltaic energy conversion microwave layer [photovoltaic direct current → high frequency inverter → microwave generated energy conversion link (such as GaN inverter module) generator (DC→AC→microwave)]-phased antenna layer [wave speed control, phase shifter (such as 6-bit digital phase shifter) and beam scanning angle (±30°)-shielding layer (metal mesh, absorbing material, ground connection corridor structure)-on-board receiver [microwave→antenna→rectifier→DC output→rechargeable battery (vehicle integration layer, receiving antenna layer, rectifier and circuit, heat dissipation and protection layer)].

[0020] In summary, an embodiment of the present invention provides a photovoltaic corridor electric energy to microwave transmission and reception microwave vehicle-mounted receiver to electric energy supporting equipment, which adopts photovoltaic-electric energy to microwave-transmission-reception-microwave conversion electric energy-charging to supply power for electric vehicles, solving the problem of difficult electric vehicle charging and improving efficiency.

[0021] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present invention.

[0022] In the several embodiments provided in this application, it should be understood that the disclosed systems and devices can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units can be merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0023] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs. In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A photovoltaic corridor power conversion microwave transmission and microwave vehicle-mounted receiving power conversion and supporting equipment, characterized in that include: The corridor side electric energy-microwave transmitting device (including photovoltaic array, phased array antenna, shielding layer) is grounded and fixedly connected to the corridor structure; On-board microwave receiver - power conversion (including rectifier antenna, dynamic matching circuit, liquid cooling module) and charging equipment; the receiving antenna layer includes vertically and horizontally polarized antennas and the spacing configuration suppresses frequency band resonance.

2. The device according to claim 1, characterized in that The electric energy is transmitted through microwave emission - phased array antenna - rectenna efficiency control - inversion - charging.

3. The device according to claim 1, characterized in that Cooling control of the liquid cooling module.

4. The device according to claim 1, characterized in that The receiving antenna layer includes vertical and horizontal polarized antennas, and the edges or surface layers are appropriately decorated to reduce wind resistance and brighten advertisements.

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