A wireless charging method for an electric bicycle

Abstract

The application discloses a wireless charging method of an electric bicycle. The method is applied to a wireless charging system, and the system comprises a wireless power supply device composed of a transmitting coil, a transmitting controller and a first communication unit, a wireless charging receiving device composed of a receiving controller, a receiving coil and a second communication unit, and a background server. The method comprises the following steps: the receiving controller controls the second communication unit to communicate with the first communication unit and match, and uploads communication matching information to the background server; the transmitting controller adjusts the horizontal distance of the wireless power supply device and the position of the transmitting coil according to the offset distance of the transmitting coil and the receiving coil, and uploads the information of the two coil alignment success to the background server; the background server feeds back the communication matching and alignment success information to the terminal; the terminal sends charging request information to the background server; and the background server receives the charging request information, calls the user information of the mobile terminal in a database, and sends a charging instruction to the transmitting controller according to the user information.

Description

Technical Field

[0001] This invention relates to wireless charging technology for electric bicycles, and more particularly to a wireless charging method for electric bicycles. Background Technology

[0002] Currently, wireless charging for electric bicycles is an efficient and convenient method. Users only need to bring the electric bicycle equipped with a wireless receiver close to the transmitter of the charging station to achieve wireless charging. This places higher demands on ensuring the alignment and offset accuracy of the transmitting coil and the receiving coil.

[0003] In existing technologies, when electric vehicles of different brands, models, and sizes are parked with deviations, users need to move the electric vehicles multiple times to perform repeated alignment operations, and high alignment accuracy cannot be achieved. This causes the wireless charging host to overheat due to low charging efficiency, and wastes the user's time and energy. Summary of the Invention

[0004] This invention provides a wireless charging method for electric bicycles to avoid repetitive alignment operations, achieving high alignment accuracy, high efficiency, and high flexibility in charging.

[0005] This invention provides a wireless charging method for electric bicycles. The method is applied to a wireless charging system, which includes a wireless power supply device, a wireless charging receiver device, and a backend server. The wireless power supply device includes a transmitting coil, a transmitting controller, and a first communication unit. The wireless charging receiver device includes a receiving controller, a receiving coil, and a second communication unit. The wireless charging method includes:

[0006] The receiving controller controls the second communication unit to communicate and match with the first communication unit, and uploads the communication matching information to the backend server;

[0007] The transmitting controller adjusts the horizontal distance of the wireless power supply device and the position of the transmitting coil according to the offset distance between the transmitting coil and the receiving coil to ensure successful alignment between the transmitting coil and the receiving coil, and uploads the alignment success information to the backend server;

[0008] The backend server sends back communication matching information and the successful alignment information to the mobile terminal.

[0009] After receiving the communication matching information and the successful docking information, the mobile terminal sends a charging request to the backend server.

[0010] The backend server receives the charging request information, calls the user information of the mobile terminal in the database, and sends a charging command to the transmitter controller according to the user information so that the transmitter controller controls the transmitter coil to output preset charging parameters to the receiver coil.

[0011] Optionally, the user information includes electric vehicle battery charging parameters, battery life estimate, battery charging cycles, electric vehicle production date, and electric vehicle registration date.

[0012] Optional, also includes:

[0013] The receiving controller detects the actual charging parameters output by the receiving coil in real time, and feeds back the actual charging parameters output by the receiving coil to the transmitting controller through the second communication unit so that the transmitting controller can determine the charging efficiency based on the actual charging parameters output by the receiving coil and the preset charging parameters.

[0014] Optional, also includes:

[0015] The receiving controller detects the actual charging parameters output by the receiving coil in real time, and feeds back the actual charging parameters output by the receiving coil to the transmitting controller through the second communication unit so that the transmitting controller can detect the charging status according to the preset charging parameters and the actual charging parameters output by the receiving coil.

[0016] Optionally, the transmitter controller sends the charging status to the backend server through the first communication unit.

[0017] Optional, also includes:

[0018] When the charging status is received as abnormal, the backend server sends a power-off command to the transmitter controller.

[0019] Optional, also includes:

[0020] The backend server sends the charging status to the mobile terminal.

[0021] Optionally, the receiving controller controls the second communication unit to communicate and match with the first communication unit, including:

[0022] The transmitting controller loads the address code signal to the transmitting coil and controls the transmitting electromagnetic coil to generate a magnetic field;

[0023] The receiving coil generates a current of corresponding strength according to the magnetic field generated by the transmitting coil, and receives the address code signal of the transmitting coil;

[0024] The receiving controller parses the address code signal, and after successful parsing, controls the second communication unit to perform unique communication pairing with the first communication unit.

[0025] Optionally, the mobile terminal includes a mobile electronic device.

[0026] Optionally, the wireless power supply device is movable along a horizontal slide rail; the transmitting coil is movably disposed within the wireless power supply device along a vertical slide rail.

[0027] In this embodiment of the invention, a receiving controller controls the second communication unit to communicate and match with the first communication unit, and uploads the communication matching information to a backend server. A transmitting controller adjusts the horizontal distance of the wireless power supply device and the position of the transmitting coil based on the offset distance between the transmitting and receiving coils to ensure successful alignment between the transmitting and receiving coils, and uploads the alignment success information to the backend server. The backend server feeds back the communication matching information and alignment success information to the mobile terminal. Upon receiving the communication matching information and alignment success information, the mobile terminal sends a charging request to the backend server. The backend server receives the charging request, retrieves the user information of the mobile terminal from the database, and issues a charging command to the transmitting controller based on the user information, causing the transmitting controller to control the transmitting coil to output preset charging parameters to the receiving coil. This solution avoids repetitive alignment operations for electric vehicles, achieving high alignment accuracy, high efficiency, and high flexibility in intelligent charging. Attached Figure Description

[0028] Figure 1 This is a flowchart of a wireless method for a wireless electric vehicle provided in an embodiment of the present invention;

[0029] Figure 2 This is a structural block diagram of a wireless charging system provided in an embodiment of the present invention;

[0030] Figure 3 This is a schematic diagram of the structure of a wireless power supply device in a wireless charging system provided in an embodiment of the present invention;

[0031] Figure 4 This is a flowchart of another wireless method for a wireless electric vehicle provided in an embodiment of the present invention. Detailed Implementation

[0032] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0033] Figure 1This is a flowchart of a wireless charging method for a wireless electric vehicle provided in an embodiment of the present invention; as follows: Figure 1 As shown, the method specifically includes the following steps:

[0034] S110, The receiver controller controls the second communication unit to communicate and match with the first communication unit, and uploads the communication matching information to the background server.

[0035] This method is applied to wireless charging systems for wireless electric vehicles. Figure 2 This is a structural block diagram of a wireless charging system for a wireless electric vehicle provided in an embodiment of the present invention; as shown... Figure 2 As shown, the wireless charging system includes a wireless power supply device 10, a wireless charging receiver 20, and a backend server 30. The wireless power supply device 10 includes a transmitting coil 11, a transmitting controller 12, and a first communication unit 13. The transmitting coil 11 is electrically connected to the transmitting controller 12, and the transmitting controller 12 is communicatively connected to the first communication unit 13. The wireless charging receiver 20 includes a receiving coil 21, a receiving controller 22, and a second communication unit 23. The receiving coil 21 is electrically connected to the receiving controller 22, and the receiving controller 22 is communicatively connected to the second communication unit 23. The working principle of the wireless charging system is to achieve wireless charging of high-power batteries through electromagnetic resonance wireless power transmission technology between the transmitting coil 11 and the receiving coil 21. Before the electromagnetic resonance wireless power transmission between the transmitting coil 11 and the receiving coil 21, a communication connection needs to be established between the wireless power supply device 10 and the wireless charging receiver 20, so that the magnetic field radiation range of the transmitting coil 11 coincides with the magnetic field reception range of the receiving coil 21. Specifically, the transmitting controller 12 is always in standby mode, loading the address code signal to the transmitting coil 11 at fixed intervals, and controlling the transmitting coil 11 to generate a magnetic field. The receiving coil 21 generates a current of corresponding intensity according to the magnetic field generated by the transmitting coil 11, and receives the address code signal of the transmitting coil 11 through the magnetic field generated by the receiving coil 21. The receiving controller 22 parses the address code signal, and after successful parsing, controls the second communication unit 23 to perform unique communication pairing with the first communication unit 13.

[0036] S120: The transmitter controller adjusts the horizontal distance of the wireless power supply device and the position of the transmitter coil according to the offset distance between the transmitter coil and the receiver coil to ensure successful alignment between the transmitter coil and the receiver coil, and uploads the alignment success information to the background server.

[0037] in, Figure 3 This is a schematic diagram of the structure of a wireless power supply device in a wireless charging system provided by an embodiment of the present invention. Figure 3As shown, the wireless power supply device 10 is movable along a horizontal slide rail A; the transmitting coil 11 is movably mounted within the wireless power supply device 10 along a vertical slide rail B; the transmitting controller 12 and the first communication unit 13 are mounted on one side of the transmitting coil 11. The wireless charging system also includes a ranging sensor, which, for example, may include an infrared sensor and a laser sensor. The ranging sensor can detect the horizontal and vertical offset distances between the transmitting coil 11 and the receiving coil 21. The transmitting controller 12 adjusts the horizontal distance of the wireless power supply device 10 and the position of the transmitting coil 12 based on the offset distance between the transmitting coil 11 and the receiving coil 21 to ensure successful alignment between them. Specifically, when the transmitting controller 12 receives a horizontal offset distance exceeding a preset horizontal distance, it can control the wireless power supply device 10 to slide along its horizontal slide rail to align the transmitting coil 11 with the receiving coil 21. The horizontal distance of coil 21 is successfully aligned with the target. When the vertical offset distance between the transmitting coil 11 and the receiving coil 21 exceeds the preset vertical distance, the transmitting controller 12 can control the movement of the transmitting coil 11 on the vertical slide rail B in the wireless power supply device to successfully align the transmitting coil 11 and the receiving coil 21 vertically. This achieves the physical and precise alignment of the transmitting coil 11 and the receiving coil 21, and simultaneously sends the alignment success information to the backend server. This avoids the problem that when the electric vehicle is parked with a deviation, the user has to move the electric vehicle multiple times to perform repeated alignment operations, which cannot achieve high alignment accuracy. This would cause the wireless charging host to overheat due to low charging efficiency and consume the user's time and energy.

[0038] S130: The back-end server sends communication matching information and successful alignment information to the mobile terminal.

[0039] The mobile terminal includes a mobile electronic device. The back-end server sends communication matching information and successful docking information to the mobile terminal in real time, reminding the user to proceed to the next step of starting the charging operation.

[0040] S140. After receiving the communication matching information and the successful docking information, the mobile terminal sends a charging request information to the backend server.

[0041] Specifically, when the mobile terminal receives communication matching information and successful docking information, it sends a charging request to the backend server. For example, in some scenarios, the mobile terminal simultaneously receives "Your device has been successfully docked, do you want to continue charging?" If the user confirms "continue charging" on the mobile terminal, the charging request is transmitted to the backend server. Alternatively, when the mobile terminal simultaneously receives "Your device has been successfully docked", it can manually scan the code to transmit the charging request to the backend server through the wireless sensing module in the mobile terminal.

[0042] S150: The backend server receives the charging request information, retrieves the user information of the mobile terminal from the database, and sends a charging command to the transmitter controller based on the user information. The transmitter controller then controls the transmitter coil to output preset charging parameters to the receiver coil. The database, stored on the backend server, contains user information including electric vehicle battery charging parameters, estimated battery life, number of battery charging cycles, electric vehicle production date, and electric vehicle registration date. The backend server sends the charging command to the transmitter controller based on the charging request information and user information. The transmitter controller then controls the transmitter coil to output preset charging parameters to the receiver coil. These preset charging parameters include charging voltage and charging current values, allowing the receiver coil to obtain magnetic field energy to power the wireless power supply device. This solution, through communication matching between the second and first communication units and dual-correspondence detection between the transmitter and receiver coils, avoids repetitive alignment operations for the electric vehicle, achieving high alignment accuracy, high efficiency, and high flexibility in intelligent charging.

[0043] Based on the above embodiments, further optimizations are made. Figure 4 This is a flowchart illustrating another wireless charging method for a wireless electric vehicle provided in an embodiment of the present invention, as shown below. Figure 4 As shown, the method specifically includes the following steps:

[0044] S210, The receiver controller controls the second communication unit to communicate and match with the first communication unit, and uploads the communication matching information to the background server.

[0045] S220: The transmitter controller adjusts the horizontal distance of the wireless power supply device and the position of the transmitter coil according to the offset distance between the transmitter coil and the receiver coil to ensure successful alignment between the transmitter coil and the receiver coil, and uploads the alignment success information to the backend server.

[0046] S230: The back-end server sends communication matching information and successful alignment information to the mobile terminal.

[0047] S240. After receiving the communication matching information and the successful docking information, the mobile terminal sends a charging request information to the backend server.

[0048] S250: The backend server receives the charging request information, calls the user information of the mobile terminal in the database, and sends a charging instruction to the transmitter controller according to the user information so that the transmitter controller controls the transmitter coil to output the preset charging parameters to the receiver coil.

[0049] S260 The receiving controller detects the actual charging parameters output by the receiving coil in real time, and feeds back the actual charging parameters output by the receiving coil to the transmitting controller through the second communication unit so that the transmitting controller can detect the charging status according to the preset charging parameters and the actual charging parameters output by the receiving coil.

[0050] Specifically, if the difference between the actual charging parameters output by the receiving coil and the preset charging parameters output by the transmitting coil exceeds a preset range, an abnormal charging state is detected; if the difference between the actual charging parameters output by the receiving coil and the preset charging parameters output by the transmitting coil is within a preset range, a normal charging state is detected. In some embodiments, when charging is in a normal state, the receiving controller detects the actual charging parameters output by the receiving coil in real time and feeds back the actual charging parameters output by the receiving coil to the transmitting controller through the second communication unit. The transmitting controller further determines the charging efficiency based on the actual output charging parameters and the preset charging parameters.

[0051] S270, the transmitter controller sends the charging status to the backend server through the first communication unit.

[0052] Specifically, when the charging status is received as abnormal, the backend server sends a power-off command to the transmitter controller, and the transmitter coil stops radiating energy to the receiver coil, thus realizing the power-off protection of the entire wireless charging system.

[0053] S280: The backend server sends the charging status to the mobile terminal.

[0054] In this embodiment, based on achieving high alignment accuracy, high efficiency, and high flexibility in intelligent charging, the transmitter controller can monitor the charging status of the wireless charging system in real time and send the charging status to the backend server. When the backend server obtains that the charging status is abnormal, it issues a power-off command to the transmitter controller to achieve power-off protection. Simultaneously, users on the mobile terminal side can access the real-time charging status of the electric vehicle on the backend server.

[0055] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A wireless charging method for an electric bicycle, characterized in that, An application is made in a wireless charging system, the wireless charging system comprising a wireless power supply device, a wireless charging receiver device, and a backend server; the wireless power supply device includes a transmitting coil, a transmitting controller, a ranging sensor, and a first communication unit; the wireless power supply device moves along a horizontal slide rail; the transmitting coil is disposed within the wireless power supply device and moves along a vertical slide rail; the transmitting controller and the first communication unit are disposed on one side of the transmitting coil; the wireless charging receiver device includes a receiving controller, a receiving coil, and a second communication unit; the wireless charging method includes: The receiving controller controls the second communication unit to communicate and match with the first communication unit, and uploads the communication matching information to the backend server; The receiving controller controls the second communication unit to communicate and match with the first communication unit, including: The transmitter controller loads the address code signal to the transmitter coil and controls the transmitter coil to generate a magnetic field; The receiving coil generates a current of corresponding strength according to the magnetic field generated by the transmitting coil, and receives the address code signal of the transmitting coil; The receiving controller parses the address code signal. After successful parsing, it controls the second communication unit to perform a unique communication pairing with the first communication unit so that the magnetic field radiation range of the transmitting coil coincides with the magnetic field receiving range of the receiving coil, and uploads the communication matching information to the background server. The transmission controller adjusts the wireless power supply device to move along a horizontal slide rail according to the offset distance between the transmitting coil and the receiving coil of the ranging sensor, so as to adjust the horizontal distance of the wireless power supply device and the position of the transmitting coil to enable the transmitting coil and the receiving coil to be successfully aligned, and uploads the alignment success information to the background server. The backend server sends back communication matching information and the successful alignment information to the mobile terminal. After receiving the communication matching information and the successful docking information, the mobile terminal sends a charging request to the backend server. The backend server receives the charging request information, calls the user information of the mobile terminal in the database, and sends a charging command to the transmitter controller according to the user information so that the transmitter controller controls the transmitter coil to output preset charging parameters to the receiver coil.

2. The wireless charging method for electric bicycles according to claim 1, characterized in that, The user information includes electric vehicle battery charging parameters, estimated battery life, number of battery charging cycles, electric vehicle production date, and electric vehicle registration date.

3. The wireless charging method for electric bicycles according to claim 1, characterized in that, Also includes: The receiving controller detects the actual charging parameters output by the receiving coil in real time, and feeds back the actual charging parameters output by the receiving coil to the transmitting controller through the second communication unit so that the transmitting controller can determine the charging efficiency based on the actual charging parameters output by the receiving coil and the preset charging parameters.

4. The wireless charging method for an electric bicycle according to claim 1, characterized in that, Also includes: The receiving controller detects the actual charging parameters output by the receiving coil in real time, and feeds back the actual charging parameters output by the receiving coil to the transmitting controller through the second communication unit so that the transmitting controller can detect the charging status according to the preset charging parameters and the actual charging parameters output by the receiving coil.

5. The wireless charging method for an electric bicycle according to claim 4, characterized in that, The transmitter controller sends the charging status to the backend server through the first communication unit.

6. The wireless charging method for an electric bicycle according to claim 5, characterized in that, Also includes: When the charging status is received as abnormal, the backend server sends a power-off command to the transmitter controller.

7. The wireless charging method for an electric bicycle according to claim 5, characterized in that, Also includes: The backend server sends the charging status to the mobile terminal.

8. The wireless charging method for an electric bicycle according to claim 1, characterized in that, The mobile terminal includes mobile electronic devices.

9. The wireless charging method for an electric bicycle according to claim 1, characterized in that, The wireless power supply device is movable along a horizontal slide rail; the transmitting coil is movable within the wireless power supply device along a vertical slide rail.

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