A wireless charging device for automobiles and an automatic triggering wireless charging method

Abstract

This disclosure provides a wireless charging device and an automatically triggered wireless charging method for automobiles, relating to the field of automatic charging technology for electric vehicles. It includes a wireless charging module and a gravity sensing module. The wireless charging module includes a transmitter, a transmission medium, and a receiver. The receiver is installed in the chassis of the electric vehicle and includes a resonant coil and a rectifier circuit. The transmitter includes a transmitting coil. The transmitting coil generates an alternating magnetic field using electrical energy, which is then propagated to the receiver through the transmission medium. The receiver's resonant coil senses the alternating magnetic field and converts it into electrical energy, which is then converted into direct current by the rectifier circuit to charge the electric vehicle battery. This disclosure enables automatic wireless charging.

Description

Technical Field

[0001] This disclosure relates to the field of automatic charging technology for electric vehicles, specifically to a wireless charging device for automobiles and an automatic triggering method for wireless charging. Background Technology

[0002] The statements in this section are merely background information relating to this disclosure and do not necessarily constitute prior art.

[0003] With the widespread adoption of electric vehicles (EVs), charging has become a significant issue for EV users. Traditional wired charging methods suffer from low efficiency and inconvenience. In recent years, the rapid development of EVs has led to the increasing attention given to wireless charging technology as a convenient and efficient charging method. Due to rising environmental awareness and the growing energy crisis, EVs, as a clean and efficient mode of transportation, are gradually becoming an important development direction for the automotive industry. However, EV charging still faces challenges, such as inconvenient charging infrastructure deployment and inconsistent plug interfaces. To address these issues, wireless charging technology has emerged.

[0004] The existing wireless charging method works roughly as follows: when an electric vehicle approaches a charging facility, the distance between the receiving coil and the transmitting coil changes, thus altering the strength and impedance of the coupled magnetic field. This change is detected by the control circuit and fed back to the main controller via the receiving power converter. Based on this information, the main controller adjusts the output power and frequency of the transmitting power converter to maintain stable power transmission. Furthermore, even when no vehicle is detected, the wireless charging transmitter remains on and continues operating, which can easily lead to overheating and energy waste. Summary of the Invention

[0005] To address the aforementioned problems, this disclosure proposes a wireless charging device for automobiles and an automatic triggering wireless charging method. The device uses electromagnetic induction to transmit electrical energy to the electric vehicle for charging. Based on the interaction of electromagnetic fields, energy is transmitted through radio waves between the charging device and the vehicle receiving device.

[0006] According to some embodiments, the present disclosure adopts the following technical solutions:

[0007] A wireless charging device for automobiles includes a wireless charging module and a gravity sensing module. The wireless charging module includes a transmitter, a transmission medium, and a receiver. The receiver is installed in the chassis of an electric vehicle and includes a resonant coil and a rectifier circuit. The transmitter includes a transmitting coil.

[0008] The transmitting coil generates an alternating magnetic field through electrical energy, and transmits the alternating magnetic field to the receiver through the transmission medium. The receiver's resonant coil senses the alternating magnetic field and converts it into electrical energy, which is then converted into direct current through a rectifier circuit to charge the electric vehicle's battery.

[0009] Furthermore, the transmitter also includes a power supply that powers the transmitting coil, which converts electrical energy into high-frequency alternating current and generates an alternating magnetic field.

[0010] Furthermore, the transmission medium is air or other media, and when the alternating magnetic field generated by the transmitter propagates through the transmission medium, it can form a magnetic field region in space.

[0011] Furthermore, when the receiver's resonant coil senses the alternating magnetic field generated by the transmitter, the energy transmission efficiency is improved through the resonance phenomenon. Resonance is the point at which the energy transmission efficiency is highest when the frequencies of the transmitter and receiver are matched.

[0012] Furthermore, frequency tuning is required between the transmitter and receiver. The receiver converts the sensed alternating magnetic field into electrical energy, which is then converted into direct current by a rectifier circuit to charge the electric vehicle's battery.

[0013] Furthermore, the transmitting coil and the resonant coil have the same size and parameters, and generate the same resonant frequency. Energy is continuously transmitted from the transmitting coil to the resonant coil of the receiver. The transmitting coil consumes energy, and the resonant coil absorbs energy, thereby enabling wireless energy transmission.

[0014] Furthermore, the gravity sensing module comprises a gravity sensor, a lifting platform, a transmission belt, and a motor. The gravity sensor is a signal receiver that receives the gravity signal from the electric vehicle.

[0015] According to some embodiments, the present disclosure adopts the following technical solutions:

[0016] An automatic triggering wireless charging method for an automotive wireless charging device includes:

[0017] When a vehicle carrying a receiver enters a lift-up parking space, the gravity sensor will recognize the vehicle's entry and then send a signal to the motor. The motor will then drive the lift-up platform to descend via a transmission device. At this time, the charging vehicle enters the magnetic field environment. When the transmitting coil enters the magnetic field environment, the wireless charging function will start working.

[0018] The transmitter converts electrical energy into high-frequency alternating current, generating an alternating magnetic field. This alternating magnetic field propagates to the receiver through a transmission medium. As the alternating magnetic field generated by the transmitter propagates through the transmission medium, it forms a magnetic field region in space. The resonant coil senses the alternating magnetic field generated by the transmitter and converts it into electrical energy. When the resonant coil senses the alternating magnetic field generated by the transmitter, it improves the energy transmission efficiency through resonance. The transmitting coil and the resonant coil have the same size and parameters, generating the same resonant frequency. Energy is continuously transmitted from the transmitting coil to the resonant coil of the receiver. The transmitting coil consumes energy, while the resonant coil absorbs energy, thus enabling wireless energy transmission.

[0019] According to some embodiments, the present disclosure adopts the following technical solutions:

[0020] A non-transitory computer-readable storage medium is provided for storing computer instructions, which, when executed by a processor, implement an automatic triggering wireless charging method for an automotive wireless charging device.

[0021] According to some embodiments, the present disclosure adopts the following technical solutions:

[0022] An electronic device includes a processor, a memory, and a computer program; wherein the processor is connected to the memory, the computer program is stored in the memory, and when the electronic device is running, the processor executes the computer program stored in the memory to cause the electronic device to execute an automatic trigger wireless charging method for implementing a wireless charging device for automobiles.

[0023] Compared with the prior art, the beneficial effects of this disclosure are as follows:

[0024] This disclosure discloses a wireless charging device and an automatic wireless charging method for automobiles, which transmits electrical energy to electric vehicles through the principle of electromagnetic induction. Based on the interaction of electromagnetic fields, it transmits energy via radio waves between a specially designed charging device and a vehicle receiving device. By designing a wireless charging module and a gravity sensing module, it achieves automatic charging when the vehicle is parked.

[0025] This disclosure discloses a wireless charging device and an automatic triggering wireless charging method for automobiles. During energy transmission, a coil is installed at the transmitter end and a resonant coil at the receiver end. The two coils have the same size and parameters, and the same resonant frequency. When they are brought close together at a suitable distance, a drive signal of the same frequency as the resonant frequency is provided to the transmitter coil. Since this frequency also serves as the resonant frequency of the receiver, the transmitter will resonate under this frequency. Energy can then be continuously transmitted from the transmitter coil to the receiver coil, achieving automatic wireless energy transmission and solving the problems of inconvenient charging device layout and inconsistent plug interfaces. Attached Figure Description

[0026] The accompanying drawings, which form part of this disclosure, are used to provide a further understanding of this disclosure. The illustrative embodiments of this disclosure and their descriptions are used to explain this disclosure and do not constitute an undue limitation of this disclosure.

[0027] Figure 1 This is a schematic diagram of the overall wireless charging device according to an embodiment of the present disclosure;

[0028] The components include: 1. Motor; 2. Gravity sensor; 3. Lifting platform; 4. Strong magnetic device; 5. Transmitter; 6. Magnetic field; 7. Conveyor belt.

[0029] Figure 2 This is a schematic diagram illustrating the working principle of the gravity sensing module according to an embodiment of the present disclosure.

[0030] Figure 3 This is a schematic diagram of a transmitter according to an embodiment of the present disclosure;

[0031] Figure 4 This is a schematic diagram of a receiver according to an embodiment of the present disclosure. Detailed Implementation

[0032] The present disclosure will be further described below with reference to the accompanying drawings and embodiments.

[0033] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of this disclosure. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure pertains.

[0034] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this disclosure. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms “comprising” and / or “including” are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0035] Example 1

[0036] One embodiment of this disclosure provides a wireless charging device for automobiles, including a wireless charging module and a gravity sensing module. The wireless charging module includes a transmitter 5, a transmission medium, and a receiver. The receiver is installed in the chassis of an electric vehicle and includes a resonant coil and a rectifier circuit. The transmitter includes a transmitting coil.

[0037] The transmitting coil generates an alternating magnetic field through electrical energy, which is then propagated to the receiver through the transmission medium. The receiver's resonant coil senses the alternating magnetic field and converts it into electrical energy, which is then converted into direct current through a rectifier circuit to charge the electric vehicle's battery.

[0038] The transmitter also includes a power supply that powers the transmitting coil. The transmitting coil converts electrical energy into high-frequency alternating current and generates an alternating magnetic field. The transmission medium is air or other media. When the alternating magnetic field generated by the transmitter propagates through the transmission medium, it can form a magnetic field region in space.

[0039] When the receiver's resonant coil senses the alternating magnetic field generated by the transmitter, the energy transmission efficiency is improved through the resonance phenomenon. The energy transmission efficiency is highest when the frequencies of the transmitter and receiver are matched. Frequency tuning is required between the transmitter and receiver. After the receiver converts the sensed alternating magnetic field into electrical energy, it converts it into direct current through a rectifier circuit to charge the electric vehicle's battery.

[0040] As one embodiment, the gravity sensing module consists of a gravity sensing sensor 2, a lifting platform 3, a transmission belt 7, and a motor 1.

[0041] The gravity sensor, also known as a signal receiver, can receive gravity signals and send commands to start the motor when a vehicle enters the lifting platform.

[0042] The lifting platform, also known as the vehicle parking platform, is used for parking spaces when vehicles are wirelessly charged. The drive belt, or transmission device, connects the motor and the lifting platform, along with the motor and power output device, to lift the vehicle.

[0043] As one embodiment, a gravity sensor is installed on the lifting platform. When a vehicle carrying the receiver enters the lifting parking space, the gravity sensor will recognize the vehicle's entry. Subsequently, the gravity sensor sends a signal to the motor, which drives the lifting platform to descend through the transmission device. At this time, the charging vehicle enters the magnetic field environment, and the transmitter's transmitting coil enters the magnetic field environment. The magnetic field environment is generated by a strong magnetic device, such as a strong magnet, and the wireless charging function then starts working.

[0044] At this point, the transmitter's transmitting coil is powered on, converting electrical energy into high-frequency alternating current, generating a strong alternating magnetic field. This alternating magnetic field propagates to the receiver through a transmission medium, which can be air or other media. As the alternating magnetic field generated by the transmitter propagates through the transmission medium, it forms a magnetic field region in space. The receiver is mounted on the chassis of the electric vehicle and contains a resonant coil and a rectifier circuit. The resonant coil is a specially designed coil that can sense the alternating magnetic field generated by the transmitter and convert it into electrical energy. When the receiver's resonant coil senses the alternating magnetic field generated by the transmitter, it improves energy transfer efficiency through resonance. Resonance means that energy transfer efficiency is highest when the frequencies of the transmitter and receiver are matched. Therefore, frequency tuning is required between the transmitter and receiver. After the receiver converts the sensed alternating magnetic field into electrical energy, it converts it into direct current through the rectifier circuit to charge the electric vehicle's battery.

[0045] The transmitter and receiver undergo frequency tuning, specifically as follows:

[0046] During the energy transfer process, a coil—a transmitting coil and a resonant coil—is installed at both the transmitter and receiver ends. These two coils have identical dimensions, parameters, and resonant frequencies. When they are brought close enough, a drive signal of the same frequency as this resonant frequency is supplied to the transmitter's transmitting coil. This frequency also serves as the receiver's resonant frequency, causing the transmitter to resonate at this frequency. Energy can then be continuously transferred from the transmitter's transmitting coil to the receiver's resonant coil. During this process, the transmitting coil consumes energy, while the receiving coil absorbs it. This allows for wireless energy transfer between the transmitter and receiver, enabling automatic wireless charging.

[0047] like Figure 1 As shown, the positional relationship of each structure is as follows: the motor is placed at a high position, the conveyor belt is connected to the motor and the platform, the gravity sensor is placed on the platform, the transmitter is placed at the bottom, and the strong magnetic device is placed above the transmitter.

[0048] Example 2

[0049] One embodiment of this disclosure provides an automatic triggering wireless charging method for an automotive wireless charging device, comprising:

[0050] When a vehicle carrying a receiver enters a lift-up parking space, the gravity sensor will recognize the vehicle's entry and then send a signal to the motor. The motor will then drive the lift-up platform to descend via a transmission device. At this time, the charging vehicle enters the magnetic field environment. When the transmitting coil enters the magnetic field environment, the wireless charging function will start working.

[0051] The transmitter converts electrical energy into high-frequency alternating current, generating an alternating magnetic field. This alternating magnetic field propagates to the receiver through a transmission medium. As the alternating magnetic field generated by the transmitter propagates through the transmission medium, it forms a magnetic field region in space. The resonant coil senses the alternating magnetic field generated by the transmitter and converts it into electrical energy. When the resonant coil senses the alternating magnetic field generated by the transmitter, it improves the energy transmission efficiency through resonance. The transmitting coil and the resonant coil have the same size and parameters, generating the same resonant frequency. Energy is continuously transmitted from the transmitting coil to the resonant coil of the receiver. The transmitting coil consumes energy, while the resonant coil absorbs energy, thus enabling wireless energy transmission.

[0052] Example 3

[0053] One embodiment of this disclosure provides a non-transitory computer-readable storage medium for storing computer instructions, which, when executed by a processor, implement the automatic triggering wireless charging method for an automotive wireless charging device.

[0054] Example 4

[0055] One embodiment of this disclosure provides an electronic device, including: a processor, a memory, and a computer program; wherein the processor is connected to the memory, the computer program is stored in the memory, and when the electronic device is running, the processor executes the computer program stored in the memory to cause the electronic device to execute an automatic trigger wireless charging method for implementing a wireless charging device for automobiles.

[0056] This disclosure is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this disclosure. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create a machine for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0057] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0058] While the specific embodiments of this disclosure have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of this disclosure. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solutions of this disclosure are still within the scope of protection of this disclosure.

Claims

1. A wireless charging device for automobiles, characterized in that, The device includes a wireless charging module and a gravity sensing module. The wireless charging module includes a transmitter, a transmission medium, and a receiver. The receiver is installed in the chassis of the electric vehicle and includes a resonant coil and a rectifier circuit. The transmitter includes a transmitting coil. The gravity sensing module includes a gravity sensor, a lifting platform, a transmission belt, and a motor. The gravity sensor is a signal receiver used to receive the gravity signal of the electric vehicle. The motor is placed at a high position, the conveyor belt is connected to the motor and the platform, the gravity sensor is placed on the platform, the transmitter is placed at the bottom, and the strong magnetic device is placed above the transmitter. The transmitting coil generates an alternating magnetic field through electrical energy, and transmits the alternating magnetic field to the receiver through the transmission medium. The receiver's resonant coil senses the alternating magnetic field and converts it into electrical energy, which is then converted into direct current through a rectifier circuit to charge the electric vehicle's battery.

2. The wireless charging device for automobiles as described in claim 1, characterized in that, The transmitter also includes a power supply that powers the transmitting coil, which converts electrical energy into high-frequency alternating current and generates an alternating magnetic field.

3. The wireless charging device for automobiles as described in claim 1, characterized in that, The transmission medium is air or other media. When the alternating magnetic field generated by the transmitter propagates through the transmission medium, it can form a magnetic field region in space.

4. The wireless charging device for automobiles as described in claim 1, characterized in that, When the receiver's resonant coil senses the alternating magnetic field generated by the transmitter, the energy transmission efficiency is improved through the resonance phenomenon. The energy transmission efficiency is highest when the frequencies of the transmitter and receiver are matched.

5. The wireless charging device for automobiles as described in claim 1, characterized in that, Frequency tuning is required between the transmitter and receiver. The receiver converts the induced alternating magnetic field into electrical energy, which is then converted into direct current by a rectifier circuit to charge the electric vehicle's battery.

6. The wireless charging device for automobiles as described in claim 1, characterized in that, The transmitting coil and the resonant coil are the same size and have the same parameters, generating the same resonant frequency. Energy is continuously transmitted from the transmitting coil to the resonant coil of the receiver. The transmitting coil consumes energy, and the resonant coil absorbs energy, thus enabling wireless energy transmission.

7. An automatic triggering wireless charging method for an automotive wireless charging device according to any one of claims 1-6, characterized in that, include: When a vehicle carrying a receiver enters a lift-up parking space, the gravity sensor will recognize the vehicle's entry and then send a signal to the motor. The motor will then drive the lift-up platform to descend via a transmission device. At this time, the charging vehicle enters the magnetic field environment. When the resonant coil enters the magnetic field environment, the wireless charging function will start working. The transmitter converts electrical energy into high-frequency alternating current, generating an alternating magnetic field. This alternating magnetic field propagates to the receiver through a transmission medium. As the alternating magnetic field generated by the transmitter propagates through the transmission medium, it forms a magnetic field region in space. The resonant coil senses the alternating magnetic field generated by the transmitter and converts it into electrical energy. When the resonant coil senses the alternating magnetic field generated by the transmitter, it improves the energy transmission efficiency through resonance. The transmitting coil and the resonant coil have the same size and parameters, generating the same resonant frequency. Energy is continuously transmitted from the transmitting coil to the resonant coil of the receiver. The transmitting coil consumes energy, while the resonant coil absorbs energy, thus enabling wireless energy transmission.

8. A non-transitory computer-readable storage medium, characterized in that, The non-transitory computer-readable storage medium is used to store computer instructions, which, when executed by a processor, implement an automatic triggering wireless charging method for an automotive wireless charging device as described in claim 7.

9. An electronic device, characterized in that, include: The device includes a processor, a memory, and a computer program; wherein the processor is connected to the memory, the computer program is stored in the memory, and when the electronic device is running, the processor executes the computer program stored in the memory to enable the electronic device to perform an automatic trigger wireless charging method for an automotive wireless charging device as described in claim 7.

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