Long-distance wireless charging system and method for electric vehicle

Abstract

The present invention discloses a long-distance wireless charging system and method for an electric vehicle, comprising a power transmitting end and a charging receiving end, wherein the power transmitting end and the charging receiving end are connected via wireless communication; the charging receiving end is installed on the electric vehicle, and the charging receiving end monitors the battery status information and vehicle information of the vehicle-mounted battery in real time, and encodes the battery status information and the vehicle information into charging request information and sends it to the power transmitting end; the power transmitting end selects a laser in the power transmitting end and a parameter usage range of the laser according to the spatial position of the electric vehicle, the battery status and the current laser parameters of the power transmitting end, and the power transmitting end adjusts the direction of the laser beam and remotely transmits it to the photoelectric conversion area of ​​the charging receiving end; the charging receiving end receives the laser beam, and the charging receiving end converts the incident laser light energy into electrical energy by using the photoelectric effect and stores it for use; the present invention realizes long-distance, safe, efficient and stable wireless charging of the electric vehicle.

Description

Technical Field

[0001] The present invention relates to the technical field of electric vehicles, and in particular to a long-distance wireless charging system and method for an electric vehicle. Background Art

[0002] Electric vehicle charging is currently mainly done by connecting the power source and the load battery through a cable. Usually, the charging gun is manually inserted into the charging port of the electric vehicle, and then the client manually sets up a request for charging. Its most important feature is that the electric vehicle and the charging pile are physically hard-connected through a cable.

[0003] Existing wireless charging technology is mainly based on electromagnetic induction, and the effective distance is in the centimeter range.

[0004] Long-distance (meters, tens of meters, hundreds of meters) wireless charging technology is in the laboratory research or field test stage, and the technical approaches are based on microwaves and lasers.

[0005] Under existing technical conditions, due to the resistance loss of cables, the distance and position between electric vehicles and charging cabinets are required to be relatively fixed. The effective distance of coil induction wireless charging is in the centimeter range, which cannot meet the needs of long-distance wireless charging. Long-distance wireless charging based on microwave beams has a low theoretical efficiency limit due to its long wavelength and large divergence. Long-distance wireless charging technology based on laser beams has bottlenecks in energy efficiency and stability. Summary of the invention

[0006] The purpose of the present invention is to provide a long-distance wireless charging system and method for electric vehicles to solve the technical problems of energy efficiency and stability bottlenecks in the prior art of long-distance wireless charging technology using laser beams.

[0007] In order to solve the above technical problems, the present invention specifically provides the following technical solutions:

[0008] A long-distance wireless charging system for an electric vehicle, comprising:

[0009] A power transmitting end and a charging receiving end, wherein the power transmitting end and the charging receiving end are connected via wireless communication;

[0010] The charging receiving end is installed on the electric vehicle, and the charging receiving end monitors the battery status information and vehicle information of the vehicle battery in real time, and encodes the battery status information and vehicle information into charging request information and sends it to the power transmitting end;

[0011] The power transmitting end decodes the received charging request information to restore the battery status information and vehicle information. The power transmitting end matches the laser in the power transmitting end to the charging receiving end according to the spatial position of the electric vehicle and the battery status information, and selects and adjusts the working parameters of the laser in real time. The power transmitting end adjusts the direction of the laser beam according to the spatial position of the electric vehicle and remotely transmits it to the photoelectric conversion area of ​​the charging receiving end.

[0012] The charging receiving end receives the laser beam, and the charging receiving end converts the incident laser light energy into electrical energy by utilizing the photoelectric effect and stores it for use.

[0013] As a preferred solution of the present invention, the vehicle-mounted battery includes a storage battery and a photocell, wherein the photocell converts the light energy of the incident laser beam into electrical energy based on the photoelectric effect, and the converted electrical energy is stored in the storage battery in real time;

[0014] The battery status information includes the battery type, the total capacity of the battery, the remaining power of the battery, the real-time temperature of the battery, the photocell type and the geometric size of the photocell.

[0015] As a preferred solution of the present invention, the vehicle information includes the vehicle license plate number and the vehicle spatial position information;

[0016] The power transmitting end calculates the relative position relationship between the power transmitting end and the charging receiving end according to the vehicle spatial position information, and the power transmitting end controls the rotation direction of the laser beam of the laser based on the relative position relationship so that the laser beam just irradiates the photocell.

[0017] As a preferred solution of the present invention, the charging receiving end includes a charging request communication subsystem, a photoelectric conversion subsystem and an on-board battery monitoring subsystem;

[0018] The vehicle-mounted battery monitoring subsystem is used to monitor the battery status information of the vehicle-mounted battery in real time, and send the battery status information to the charging request communication subsystem;

[0019] The charging request communication subsystem is used to send a charging request to the power transmitter, and the charging request includes coded information of vehicle information and battery status information;

[0020] The photoelectric conversion subsystem converts the energy emitted by the power transmitting end into electrical energy and stores it in the storage battery of the vehicle battery.

[0021] As a preferred solution of the present invention, the power transmitting end includes a laser generating subsystem, a beam controlling subsystem, a charging response decision subsystem and a target identifying subsystem;

[0022] The charging response decision subsystem accepts the charging request of the charging request communication subsystem, restores the state of the vehicle battery and the vehicle spatial position information, and provides the state of the vehicle battery and the vehicle spatial position information to the laser generation subsystem and the beam control subsystem;

[0023] The target recognition subsystem is used to determine the location information of the photocell and send the location information of the photocell to the charging response decision subsystem, and the charging response decision subsystem automatically matches and selects the laser based on the location information of the photocell;

[0024] The beam control subsystem is used to adjust the direction of the laser beam of the laser so that the laser beam irradiates the photocell;

[0025] The laser generation subsystem performs calculations and decisions based on the information of the charging request communication subsystem to calculate the optimal parameter range of the laser beam emitted by the selected laser.

[0026] As a preferred solution of the present invention, the charging response decision subsystem includes a signal receiver and a position calculator, the signal receiver receives a charging request data packet from the electric vehicle, decodes and restores and calculates the battery status and the photocell status;

[0027] The position calculator determines the real-time spatial position of the electric vehicle relative to the laser based on the three-dimensional coordinates of the space where the laser is located, and sends the decoded and restored information to the laser generation subsystem and the beam control subsystem;

[0028] The laser generating subsystem determines the laser output power of the laser beam based on the angle between the laser beam and the photocell, the battery status information, the laser wavelength and the energy space-time mode threshold.

[0029] As a preferred solution of the present invention, the target recognition subsystem includes an infrared imaging component and an image recognition component, and the image recognition component locks the electric vehicle requesting charging based on the vehicle spatial position information and the vehicle license plate number;

[0030] The infrared imaging component searches for photocells and measures the boundaries of photocells for the electric vehicle requesting charging, thereby forming location information of the photocells.

[0031] As a preferred solution of the present invention, the laser generating subsystem selects and adjusts the working parameters of the laser in real time based on the battery status information, wherein the working parameters of the laser include the laser wavelength, the output light power of the laser and the energy spatiotemporal mode of the laser;

[0032] The laser generating subsystem adjusts the light output power of the laser in real time based on the battery status information;

[0033] The calculation formula of the output light power of the laser is: P = (λ t -λ) / λ t ×q o ×A r / cosθ;

[0034] λ t is the cut-off wavelength of the photocell, λ is the laser wavelength, q o is the optimal value of laser energy density in time and space, A r is the effective area of ​​the receiving end, and θ is the angle between the laser propagation direction and the normal of the receiving end surface.

[0035] As a preferred solution of the present invention, the laser wavelength is selected based on the photocell model;

[0036] The energy spatiotemporal mode is divided into continuous laser or pulsed laser in time, and the spatial spot of the laser includes uniform, Gaussian, and annular distribution forms;

[0037] The selection of the energy spatiotemporal mode is based on battery status information and the relative position relationship between the laser and the photocell, wherein the battery status information includes battery type, total battery capacity, remaining battery power, real-time battery temperature, photocell type, and photocell geometric dimensions.

[0038] In order to solve the above technical problems, the present invention also provides a wireless charging method of a long-distance wireless charging system for an electric vehicle, comprising the following steps:

[0039] Step 100: The charging receiving end monitors the vehicle information and the battery status information in real time, and when sending a charging request, sends a data packet formed by the vehicle information and the battery status information to the power transmitting end;

[0040] Step 200, the power transmitting end determines the vehicle spatial position of the electric vehicle relative to the laser and the spatial position of the photocell based on the vehicle information, and adjusts the emission direction of the laser beam, and the power transmitting end determines the parameter selection interval of the laser beam based on the battery status information, and emits the adjusted laser beam to the photocell at the charging receiving end according to the set emission direction;

[0041] Step 300: The photocell at the charging receiving end converts the incident laser light energy into electrical energy based on the photoelectric effect and stores it in a storage battery to achieve long-distance wireless charging.

[0042] Compared with the prior art, the present invention has the following beneficial effects:

[0043] The electric vehicle driver of the present invention only needs to drive the vehicle to the charging area, and then use a one-click "charging request" operation. After system processing at the charging receiving end and the power transmitting end, a unique laser is matched for the electric vehicle for charging. By adjusting the angle and laser parameters of the laser, the charging conversion efficiency and charging stability are improved, thereby realizing long-distance, safe, efficient and stable wireless charging of electric vehicles, avoiding the inherent defects of wired charging technology and the problem of low energy conversion efficiency of existing laser wireless charging. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0045] Figure 1 A schematic diagram of the overall structure of a long-distance wireless charging system provided by an embodiment of the present invention; DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] like Figure 1 As shown, the present invention provides a long-distance wireless charging system for an electric vehicle, comprising:

[0048] The power transmitting end and the charging receiving end are connected via wireless communication.

[0049] Among them, the charging receiving end is installed on the electric vehicle. The charging receiving end monitors the battery status information and vehicle information of the on-board battery in real time, and encodes the battery status information and vehicle information into charging request information and sends it to the power transmitting end.

[0050] The power transmitter decodes the received charging request information to restore the battery status information and vehicle information. The power transmitter matches the laser in the power transmitter to the charging receiver according to the spatial position of the electric vehicle and the battery status information, and selects and adjusts the working parameters of the laser in real time. The power transmitter adjusts the direction of the laser beam according to the spatial position of the electric vehicle and remotely transmits it to the photoelectric conversion area of ​​the charging receiver.

[0051] The charging receiving end receives the laser beam, and uses the photoelectric effect to convert the incident laser light energy into electrical energy and store it for use.

[0052] The present invention can realize long-distance, safe, efficient and stable wireless charging of electric vehicles, avoid the inherent defects of wired charging technology, and solve the problem of short distance of electromagnetic induction wireless charging.

[0053] Electric vehicle drivers only need to drive the vehicle to the charging area, and then use one-click "charge request" operation. The charging receiving end will encode the battery status information and vehicle information into charging request information and send it to the power transmitting end.

[0054] The handshake protocol is triggered through wireless network communication between the power transmitter and the charging receiver. The power transmitter matches the corresponding and unique laser for the electric vehicle based on its spatial position.

[0055] This embodiment selects a laser and adjusts the angle and laser beam parameters of the laser based on the vehicle status information of the electric vehicle, including spatial position information and battery status information, to improve the charging conversion efficiency and charging stability, and realize long-distance, safe, efficient and stable wireless charging of electric vehicles, which will avoid the inherent defects of wired charging technology and the problem of low energy conversion efficiency of existing laser wireless charging.

[0056] In this embodiment, the on-board battery of the electric vehicle includes a storage battery and a photovoltaic cell, wherein the photovoltaic cell converts the light energy of the incident laser beam into electrical energy based on the photoelectric effect, and the converted electrical energy is stored in the storage battery in real time.

[0057] The battery status information sent by the charging receiving end includes the battery type, the total battery capacity, the remaining battery power, the real-time battery temperature, the photocell type and the photocell geometric dimensions.

[0058] The vehicle information sent by the charging receiving end includes the vehicle license plate number and the vehicle spatial location information.

[0059] The power transmitting end calculates the relative position relationship between the power transmitting end and the charging receiving end according to the vehicle's spatial position information, and the power transmitting end controls the rotation direction of the laser beam of the laser based on the relative position relationship so that the laser beam just irradiates the photocell.

[0060] Specifically, in order to achieve matching charging between the laser beam and the photocell, the charging receiving end includes a charging request communication subsystem, a photoelectric conversion subsystem, and an on-board battery monitoring subsystem.

[0061] The vehicle battery monitoring subsystem is used to monitor the battery status information of the vehicle battery in real time and send the battery status information to the charging request communication subsystem.

[0062] The charging request communication subsystem is used to send a charging request to the power transmitter, and the charging request contains coded information of vehicle information and battery status information.

[0063] The photoelectric conversion subsystem converts the energy emitted by the power transmitter into electrical energy and stores it in the battery of the on-board battery.

[0064] The power transmitting end includes a laser generation subsystem, a beam control subsystem, a charging response decision subsystem and a target recognition subsystem.

[0065] The charging response decision subsystem receives the charging request from the charging request communication subsystem, restores the status of the vehicle battery and the vehicle spatial position information, and provides the status of the vehicle battery and the vehicle spatial position information to the laser generation subsystem and the beam control subsystem.

[0066] The charging response decision subsystem includes a signal receiver and a position calculator. The signal receiver receives the charging request data packet from the electric vehicle, decodes and restores it, and calculates the battery status and the photocell status.

[0067] The position calculator determines the real-time spatial position of the electric vehicle relative to the laser based on the three-dimensional coordinates of the space where the laser is located, and sends the decoded and restored information to the laser generation subsystem and the beam control subsystem.

[0068] The laser generation subsystem determines the laser output power of the laser beam based on the angle between the laser beam and the photocell, the battery status information, and the laser wavelength and energy space-time mode threshold.

[0069] The target recognition subsystem is used to determine the location information of the photocell and send the location information of the photocell to the charging response decision subsystem. The charging response decision subsystem automatically matches and selects the laser based on the location information of the photocell.

[0070] Specifically, the target recognition subsystem includes an infrared imaging component and an image recognition component. The image recognition component locks the electric vehicle requesting charging based on the vehicle's spatial position information and the vehicle license plate number. The infrared imaging component searches for photocells and measures the photocell boundaries of the electric vehicle requesting charging to form the photocell's position information.

[0071] The beam control subsystem is used to adjust the direction of the laser beam of the laser so that the laser beam irradiates the photocell.

[0072] In this embodiment, each laser is installed on a rotating table to adjust the direction of the laser beam, and the geometry and size of the light spot covering the target photocell array are adjusted through the lens assembly, wherein the input conditions for the beam control subsystem to adjust the direction of the laser beam are: the geometric dimensions of the photocells of the target vehicle, the relative position relationship between the transmitting and receiving ends (specifically calculated by the charging response decision subsystem and the target recognition subsystem), and the relative position relationship between the transmitting and receiving ends includes the horizontal distance, the vertical distance, the angle between the light-emitting lens and the center of the photocell array and the horizontal plane, etc.

[0073] The laser generation subsystem makes calculation decisions based on the information of the charging request communication subsystem, and calculates the optimal parameter range of the laser beam emitted by the selected laser. The optimal parameter range of the laser beam includes the selection of the laser's light output power, laser wavelength and energy space-time mode.

[0074] As a preferred embodiment of this embodiment, the laser generating subsystem selects and adjusts the operating parameters of the laser in real time based on the battery status information, wherein the operating parameters of the laser include the laser wavelength, the laser output power and the energy spatiotemporal mode of the laser.

[0075] The laser wavelength is selected based on the model of the photovoltaic cell. Specifically, according to the device type of the photovoltaic cell and the material grade of the photovoltaic cell, the device type is divided into single junction and multi-junction; the material type grade is divided into III-V valent compounds, silicon, single crystal, polycrystalline, bulk, thin film, etc. The laser wavelength selected in this embodiment can better match the operation of the photovoltaic cell at the charging receiving end, so that the wavelength loss is smaller and more efficient charging can be achieved.

[0076] Energy space-time mode is divided into continuous laser or pulsed laser in time, and the spatial spot of the laser includes uniform, Gaussian, and annular distribution forms;

[0077] The selection of the energy spatiotemporal mode is based on the battery status information and the relative position relationship between the laser and the photocell, wherein the battery status information includes the battery type, the total battery capacity, the remaining battery power, the real-time battery temperature, the photocell type and the photocell geometric size.

[0078] Therefore, the laser generation subsystem adjusts the laser output power in real time based on the battery status information.

[0079] Specifically, the calculation formula for the output power of the laser is: P = (λ t -λ) / λ t ×q o ×A r / cosθ;

[0080] λ t is the cut-off wavelength of the photocell, λ is the laser wavelength, which has been selected according to the model of the photocell, and q ois the optimal value of the laser energy spatiotemporal density, which depends on the battery state. r is the effective area of ​​the receiving end, and θ is the angle between the laser propagation direction and the normal of the receiving end surface.

[0081] This implementation adjusts the laser output power through real-time calculation, making the charging process more efficient, more stable, and more conducive to improving the overall system life of the charging receiving end.

[0082] The wireless charging method of the long-distance wireless charging system of the electric vehicle comprises the following steps:

[0083] Step 100: The charging receiving end monitors the vehicle information and the battery status information in real time, and when sending a charging request, sends a data packet formed by the vehicle information and the battery status information to the power transmitting end;

[0084] Step 200: The power transmitting end determines the vehicle spatial position of the electric vehicle relative to the laser and the spatial position of the photocell based on the vehicle information, and adjusts the emission direction of the laser beam. The power transmitting end determines the parameter selection interval of the laser beam based on the battery status information, and emits the adjusted laser beam to the photocell at the charging receiving end according to the set emission direction.

[0085] Step 300: The photocell at the charging receiving end converts the incident laser light energy into electrical energy based on the photoelectric effect and stores it in a storage battery to achieve long-distance wireless charging.

[0086] Therefore, the electric vehicle driver of this embodiment only needs to drive the vehicle to the charging area, and then use a one-click "charging request" operation. After system processing at the charging receiving end and the power transmitting end, a unique laser is matched for the electric vehicle for charging. By adjusting the angle and laser parameters of the laser, the charging needs can be met, thereby realizing long-distance, safe, efficient and stable wireless charging of electric vehicles, which will avoid the inherent defects of wired charging technology and solve problems such as the short distance of electromagnetic induction wireless charging.

[0087] The above embodiments are only exemplary embodiments of the present application and are not intended to limit the present application. The protection scope of the present application is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present application within the essence and protection scope of the present application, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present application.

Claims

1. A long-distance wireless charging system for electric vehicles, characterized in that: include: A power transmitting end and a charging receiving end, wherein the power transmitting end and the charging receiving end are connected via wireless communication; The charging receiving end is installed on the electric vehicle, and the charging receiving end monitors the battery status information and vehicle information of the vehicle battery in real time, and encodes the battery status information and vehicle information into charging request information and sends it to the power transmitting end; The power transmitting end decodes the received charging request information to restore the battery status information and vehicle information. The power transmitting end matches the laser in the power transmitting end to the charging receiving end according to the spatial position of the electric vehicle and the battery status information, and selects and adjusts the working parameters of the laser in real time. The power transmitting end adjusts the direction of the laser beam according to the spatial position of the electric vehicle and remotely transmits it to the photoelectric conversion area of ​​the charging receiving end. The charging receiving end receives the laser beam, and the charging receiving end converts the incident laser light energy into electrical energy by using the photoelectric effect and stores it for use; Wherein, the vehicle-mounted battery includes a storage battery and a photocell, wherein the photocell converts the light energy of the incident laser beam into electrical energy based on the photoelectric effect, and the converted electrical energy is stored in the storage battery in real time; The battery status information includes the battery type, the total capacity of the battery, the remaining power of the battery, the real-time temperature of the battery, the type of the photocell, and the geometric size of the photocell; The power transmitting end includes a laser generating subsystem, a beam controlling subsystem, a charging response decision subsystem and a target identifying subsystem; The laser generating subsystem selects and adjusts the working parameters of the laser in real time based on the battery status information, wherein the working parameters of the laser include the laser wavelength, the output light power of the laser, and the energy spatiotemporal mode of the laser; The laser generating subsystem adjusts the light output power of the laser in real time based on the battery status information; The calculation formula of the laser output power is: P = (λ t -λ) / λ t ×q o ×A r / cosθ; λ t is the cut-off wavelength of the photocell, λ is the laser wavelength, q o is the optimal value of laser energy density in time and space, A r is the effective area of ​​the receiving end, and θ is the angle between the laser propagation direction and the normal of the receiving end surface.

2. A long-distance wireless charging system for electric vehicles according to claim 1, characterized in that: The vehicle information includes the vehicle license plate number and the vehicle spatial location information; The power transmitting end calculates the relative position relationship between the power transmitting end and the charging receiving end according to the vehicle spatial position information, and the power transmitting end controls the rotation direction of the laser beam of the laser based on the relative position relationship so that the laser beam just irradiates the photocell.

3. The long-distance wireless charging system for electric vehicles according to claim 1, characterized in that: The charging receiving end includes a charging request communication subsystem, a photoelectric conversion subsystem and an on-board battery monitoring subsystem; The vehicle-mounted battery monitoring subsystem is used to monitor the battery status information of the vehicle-mounted battery in real time, and send the battery status information to the charging request communication subsystem; The charging request communication subsystem is used to send a charging request to the power transmitter, and the charging request includes coded information of vehicle information and battery status information; The photoelectric conversion subsystem converts the energy emitted by the power transmitting end into electrical energy and stores it in the storage battery of the vehicle battery.

4. The long-distance wireless charging system for electric vehicles according to claim 1, characterized in that: The charging response decision subsystem accepts the charging request of the charging request communication subsystem, restores the state of the vehicle battery and the vehicle spatial position information, and provides the state of the vehicle battery and the vehicle spatial position information to the laser generation subsystem and the beam control subsystem; The target recognition subsystem is used to determine the location information of the photocell and send the location information of the photocell to the charging response decision subsystem, and the charging response decision subsystem automatically matches and selects the laser based on the location information of the photocell; The beam control subsystem is used to adjust the direction of the laser beam of the laser so that the laser beam irradiates the photocell; The laser generation subsystem performs calculations and decisions based on the information of the charging request communication subsystem to calculate the optimal parameter range of the laser beam emitted by the selected laser.

5. The long-distance wireless charging system for electric vehicles according to claim 4, characterized in that: The charging response decision subsystem includes a signal receiver and a position calculator, wherein the signal receiver receives a charging request data packet from the electric vehicle, decodes and restores the data packet, and calculates the battery status and the photocell status; The position calculator determines the real-time spatial position of the electric vehicle relative to the laser based on the three-dimensional coordinates of the space where the laser is located, and sends the decoded and restored information to the laser generation subsystem and the beam control subsystem; The laser generating subsystem determines the laser output power of the laser beam based on the angle between the laser beam and the photocell, the battery status information, the laser wavelength and the energy space-time mode threshold.

6. A long-distance wireless charging system for electric vehicles according to claim 4, characterized in that: The target recognition subsystem includes an infrared imaging component and an image recognition component, and the image recognition component locks the electric vehicle requesting charging based on the vehicle spatial position information and the vehicle license plate number; The infrared imaging component searches for photocells and measures the boundaries of photocells for the electric vehicle requesting charging, thereby forming location information of the photocells.

7. The long-distance wireless charging system for electric vehicles according to claim 4, characterized in that: The laser wavelength is selected based on the photocell model; The energy spatiotemporal mode is divided into continuous laser or pulsed laser in time, and the spatial spot of the laser includes uniform, Gaussian, and annular distribution forms; The selection of the energy spatiotemporal mode is based on battery status information and the relative position relationship between the laser and the photocell, wherein the battery status information includes battery type, total battery capacity, remaining battery power, real-time battery temperature, photocell type, and photocell geometric dimensions.

8. A wireless charging method for a long-distance wireless charging system of an electric vehicle according to any one of claims 1 to 7, characterized in that: The following steps are involved: Step 100: The charging receiving end monitors the vehicle information and the battery status information in real time, and when sending a charging request, sends a data packet formed by the vehicle information and the battery status information to the power transmitting end; Step 200, the power transmitting end determines the vehicle spatial position of the electric vehicle relative to the laser and the spatial position of the photocell based on the vehicle information, and adjusts the emission direction of the laser beam, and the power transmitting end determines the parameter selection interval of the laser beam and adjusts the direction of the laser beam based on the battery status information and the relative position relationship between the receiving and transmitting ends of the charging receiving end and the power transmitting end, and emits the adjusted laser beam to the photocell of the charging receiving end according to the set emission direction; Step 300: The photocell at the charging receiving end converts the incident laser light energy into electrical energy based on the photoelectric effect and stores it in a storage battery to achieve long-distance wireless charging.

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