Wireless communication and energy transmission method, device, electronic equipment and system

Abstract

The application relates to the technical field of wireless energy transmission and wireless communication, and discloses a wireless communication and energy transmission method, device, electronic equipment and system. The method comprises the following steps: in a first time period, a first frequency signal is obtained by performing first frequency division processing on a reference frequency signal, and the first frequency signal is amplified by a first power amplification coefficient, and the amplified first frequency signal is transmitted through an antenna module to perform wireless communication with a receiving device; in a second time period, at least one power supply frequency signal with a frequency lower than the first frequency is obtained by performing frequency division processing on the reference frequency signal, and the power supply frequency signal is amplified by a power amplification coefficient greater than the first power amplification coefficient, and the amplified power supply frequency signal is transmitted through the antenna module to perform wireless energy transmission to the receiving device; the first time period and the second time period can be cyclically executed. The application realizes communication and power supply through the same circuit.

Description

Technical Field

[0001] This application relates to the field of wireless power transfer and wireless communication technology, specifically to a wireless communication and power transfer method, apparatus, electronic device, and system. Background Technology

[0002] With the rapid development of the Internet of Things and consumer electronics technology, wireless charging technology has been widely used in various electronic devices such as smartphones, wearable devices, and kitchen appliances. In practical applications, wireless power supply systems typically need not only to transmit energy but also to communicate with the receiving device before or during power supply to complete information exchange such as device identification, capability negotiation, and charging status monitoring.

[0003] Currently, wireless charging solutions (such as the Qi / Ki standard) typically employ separate communication and power supply circuits. The communication circuit handles signal exchange, while the power supply circuit handles energy transfer; these two circuits are physically separate. This separate architecture leads to high system complexity, large footprint, and increased hardware costs. Summary of the Invention

[0004] In view of the above problems, embodiments of this application provide a wireless communication and power transmission method, apparatus, electronic device and system, which solves the problems of high complexity, large size and high cost caused by the separation of communication and power supply circuits in the prior art.

[0005] According to a first aspect of the embodiments of this application, a wireless communication and power transfer method is provided, comprising:

[0006] During the first time period, the reference frequency signal is controlled to undergo a first frequency division process to obtain a first frequency signal, and the first frequency signal is amplified by a first power amplification factor. The amplified first frequency signal is then transmitted through the antenna module to conduct wireless communication with a receiving device. During the second time period, the reference frequency signal is divided to obtain at least one power supply frequency signal with a frequency lower than the first frequency, and the power supply frequency signal is amplified with a power amplification factor greater than the first power amplification factor. The amplified power supply frequency signal is then transmitted through the antenna module to wirelessly transmit power to the receiving device. In one alternative approach, the first time period and the second time period can be executed cyclically.

[0007] In one alternative approach, the wireless communication performed during the first time period includes: exchanging device identification and / or energy demand information; The step of wireless power transfer during the second time period is performed after confirming the docking device and energy requirements based on the wireless communication. The wireless communication further includes: during the energy transmission process, exchanging energy transmission status information through at least one first time period executed cyclically, the energy transmission status information including information indicating whether the energy transmission has ended.

[0008] In one alternative approach, the second time period includes a first power supply period and a second power supply period; During the second time period, the reference frequency signal is controlled to undergo frequency division processing to obtain at least one power supply frequency signal with a frequency lower than the first frequency, and the power supply frequency signal is controlled to be amplified with a power amplification factor greater than the first power amplification factor. The amplified power supply frequency signal is then transmitted through the antenna module to wirelessly transmit power to the receiving device, including: During the first power supply period, the reference frequency signal is controlled to undergo a second frequency division process to obtain a second frequency signal, and the second frequency signal is amplified by a second power amplification factor. The amplified second frequency signal is then transmitted through the antenna module to wirelessly transmit power to the receiving device. During the second power supply period, the reference frequency signal is controlled to undergo a third frequency division process to obtain a third frequency signal. The third frequency signal is then amplified by a third power amplification factor and transmitted through the antenna module to the receiving device for wireless power transmission. Wherein, the second frequency is lower than the first frequency, and the second power amplification factor is greater than the first power amplification factor; the third frequency is lower than the second frequency, and the third power amplification factor is greater than the second power amplification factor.

[0009] In an alternative approach, the method further includes: During the first time period, the resonant circuit of the antenna module is adjusted so that its resonant frequency matches the first frequency signal; During the second time period, the adjustment of the resonant circuit of the antenna module is stopped.

[0010] In one alternative embodiment, the antenna module includes a first antenna element and a second antenna element; The step of transmitting the amplified first frequency signal through the antenna module includes: controlling the switching circuit to select the first antenna unit so as to transmit the amplified first frequency signal through the first antenna unit, wherein the first antenna unit is adapted to the first frequency; The transmission of the amplified power supply frequency signal through the antenna module includes: controlling the switching circuit to select the second antenna unit, transmitting the amplified power supply frequency signal through the second antenna unit, and the second antenna unit being adapted to the low-frequency band where the power supply frequency signal is located.

[0011] In one alternative approach, the first frequency is 6-15MHz, and the transmission power of the wireless communication is in the milliwatt to watt range; The second frequency is 100-150KHz, and the transmission power during the first electron supply period is in the range of watts to ten watts; The third frequency is approximately 30-50 kHz, and the transmission power during the second electron-supplying period is above 10 watts.

[0012] According to a second aspect of the present application, an electronic device is provided, including a memory, a processor, and a computer program stored in the memory, wherein the processor executes the computer program to implement the method as described in any of the above embodiments.

[0013] According to a third aspect of the embodiments of this application, a wireless communication and power transfer device is provided, including a controller, a clock source, an adjustable frequency divider, a modulation and demodulation circuit, an adjustable power amplifier, and an antenna module, wherein... The clock source is used to generate a reference frequency signal; The adjustable frequency divider is connected to the controller and the clock source respectively, and is used to perform frequency division processing on the reference frequency signal according to the control signal of the controller to output carrier signals of different frequencies; The modulation and demodulation circuit is connected to the controller and the adjustable frequency divider respectively, and is used to modulate the data to be transmitted onto the carrier signal or demodulate the data from the received signal under the control of the controller. The adjustable power amplifier is connected to the controller and the modulation and demodulation circuit respectively, and is used to amplify the signal output by the modulation and demodulation circuit with an adjustable power amplification factor according to the control signal; The antenna module is connected to the adjustable power amplifier and is used to transmit signals; The controller is used to perform the methods described in any of the above embodiments.

[0014] According to a fourth aspect of the embodiments of this application, a wireless communication and power transmission device is provided, comprising a controller, a clock source, an adjustable frequency divider, a modulation and demodulation circuit, a rectifier circuit, and an antenna module, wherein... The clock source is used to generate a reference frequency signal; The adjustable frequency divider is connected to the controller and the clock source respectively, and is used to divide the reference frequency signal according to the control signal of the controller to output local reference signals of different frequencies. The antenna module is connected to the modulation / demodulation circuit and the rectifier circuit; The controller is used to control the adjustable frequency divider to output a local reference signal of a first frequency in a first time period, and to control the wireless communication and power transmission device to enter the power receiving mode in a second time period. The modulation and demodulation circuit is connected to the antenna module, the controller and the adjustable frequency divider respectively, and is used to demodulate the signal received by the antenna module based on the local reference signal of the first frequency in the first time period, or to modulate the data to be transmitted and transmit it through the antenna module. The rectifier circuit is connected to the load and is used to rectify the energy signal received by the antenna module into DC power to supply the load during the second time period.

[0015] According to a fifth aspect of the embodiments of this application, a wireless communication and power transfer system is provided, including a transmitting end device and a receiving end device; The transmitting device includes the apparatus described in the above embodiments, and the receiving device includes the apparatus described in the above embodiments.

[0016] In this embodiment, time-division multiplexing is used to obtain different frequencies by using different frequency division coefficients in different time periods, and different power amplification coefficients are used for amplification. This enables the same circuit to perform efficient communication with high frequency and low power during the communication period, and efficient energy transmission with low frequency and high power during the energy transmission period, which simplifies the system structure and reduces costs.

[0017] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram illustrating an application scenario of the wireless communication and power transfer system provided in an embodiment of this application. Figure 2 A hardware structure block diagram of a wireless communication and power transmission device applied to a transmitting device provided in an embodiment of this application; Figure 3 A hardware structure block diagram of a wireless communication and power transmission device applied to a receiving device provided in an embodiment of this application; Figure 4 A flowchart of the wireless communication and power transfer method provided in the embodiments of this application; Figure 5 A hardware structure block diagram of a wireless communication and power transmission device applied to a transmitting device, provided in another embodiment of this application; Figure 6 A hardware structure block diagram of a wireless communication and power transmission device applied to a transmitting device, provided in another embodiment of this application; Figure 7 A structural block diagram of an electronic device provided in an embodiment of this application.

[0020] Explanation of icon numbers: 100 - Transmitter equipment; 110 - Controller; 120 - Clock source; 130 - Adjustable frequency divider; 140 - Modulation and demodulation circuit; 150 - Adjustable power amplifier; 160 - Antenna module; 161 - First antenna unit; 162 - Second antenna unit; 163 - Switching circuit; 200 - Receiver equipment; 210 - Receiver controller; 220 - Receiver clock source; 230 - Receiver adjustable frequency divider; 240 - Receiver modulation and demodulation circuit; 250 - Rectifier circuit; 260 - Receiver antenna module; 270 - Load; 300 - Electronic equipment; 302 - Processor; 304 - Memory; 306 - Computer program. Detailed Implementation

[0021] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0022] Unless otherwise defined, 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 application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0023] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more (including two), unless otherwise explicitly defined.

[0024] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0025] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, representing any combination of the listed objects. For example, "A and / or B" can represent three possibilities: A exists, A and B exist simultaneously, or B exists. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0026] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the technical terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a direct connection or an indirect connection through an intermediate medium, or they can refer to the internal connection of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0027] The term "coupling" in this article can refer to a direct connection, an indirect connection through intermediate components (such as resistors, capacitors, inductors, transformers, or other devices), or even wireless / electromagnetic coupling, as long as signals or energy can be transferred between the two.

[0028] In the field of wireless charging technology, separate communication circuits and power transmission circuits are typically used. The communication circuit is responsible for exchanging device information and charging parameters between the transmitter and receiver, while the power transmission circuit is responsible for transferring energy from the transmitter to the receiver. Designing and optimizing these two separate circuits leads to problems such as high hardware complexity, large footprint, and increased material costs.

[0029] The inventors discovered that although NFC technology can reuse a single frequency carrier for both communication and power transfer, it has an inherent performance contradiction because it operates at a fixed frequency (usually 13.56MHz): on the one hand, the high-frequency carrier of 13.56MHz is suitable for communication, providing a wide bandwidth and strong anti-interference capability, but its efficiency is relatively low when used for power transfer, making it difficult to transfer power above the watt level; on the other hand, if the frequency is lowered to improve power transfer efficiency (such as the 100-200KHz band used in the Qi standard), the communication bandwidth and speed will decrease significantly.

[0030] The inventors further discovered that in practical applications, communication and power transfer functions do not need to be performed simultaneously. A typical wireless charging process is as follows: first, device discovery and identification are performed, exchanging capability information and charging parameters; this stage only requires low-power communication at the milliwatt level. After confirming the connection, the power transfer stage begins, at which point communication can be paused or reduced to focus on power transfer. This timing characteristic makes time-division multiplexing possible.

[0031] Based on the above findings, this application proposes a time-division multiplexing (TDM) technology that dynamically adjusts the carrier frequency and power amplification factor: on the same set of circuit hardware, a high-frequency carrier and low amplification factor are used during the communication period to ensure communication performance; during the power supply period, a low-frequency carrier and high amplification factor are switched to ensure energy transmission efficiency. Through time-division switching, a single circuit is optimized for communication and power supply functions at different times, thereby solving the complexity problem of the separate architecture and the performance trade-off problem of single-frequency multiplexing.

[0032] See Figure 1 This is a schematic diagram illustrating an application scenario of a wireless communication and power transfer system provided in an embodiment of this application. The system includes a transmitter device 100 and a receiver device 200. The transmitter device 100 can be integrated into devices such as wireless charging docks, embedded kitchen countertops, and industrial power supply platforms. The receiver device 200 can be integrated into electrical appliances such as smartphones, wearable devices, power tools, and kitchen appliances (such as blenders and rice cookers).

[0033] See Figure 2 The transmitting device 100 includes a controller 110, a clock source 120, an adjustable frequency divider 130, a modulation and demodulation circuit 140, an adjustable power amplifier 150, and an antenna module 160.

[0034] Clock source 120 is a circuit module used to generate a reference frequency signal. In this embodiment, clock source 120 may be a crystal oscillator (hereinafter referred to as crystal) to generate a stable basic high-frequency signal, such as 27MHz. Those skilled in the art should understand that clock source 120 may also be implemented using other types of oscillators or phase-locked loop (PLL) circuits, and the reference frequency can be selected according to actual needs; this application does not limit this.

[0035] The adjustable frequency divider 130 is a circuit module capable of dividing the frequency of an input signal according to a control signal, and its division factor can be dynamically adjusted. The division factor of the adjustable frequency divider 130 is denoted as N, where N is a positive number greater than or equal to 1. The adjustable frequency divider 130 is connected to the clock source 120 and the controller 110, receiving the reference frequency signal output from the clock source 120. Based on the control instructions of the controller 110, it divides the signal by a specific division factor N to output a carrier signal of the desired frequency. The division factor N can be adjusted using a digital frequency divider, such as a programmable counter. The controller 110 writes different division values ​​to the adjustable frequency divider 130 to change the output frequency.

[0036] The modulation and demodulation circuit 140 is a circuit module that loads the data signal to be transmitted onto the carrier signal (modulation) and extracts data from the received signal (demodulation). The modulation and demodulation circuit 140 is connected to the controller 110 and the adjustable frequency divider 130, respectively. It receives the carrier signal output from the adjustable frequency divider 130, and during the communication period, modulates the data to be transmitted (such as device identification information, energy demand parameters, etc.) provided by the controller 110 onto the carrier. When receiving signals, it demodulates the data from the signal received by the antenna module 160 and transmits it to the controller 110. The modulation method can be Amplitude Shift Keying (ASK), Frequency Shift Keying (FSK), or Phase Shift Keying (PSK), etc., and this application does not limit this method.

[0037] The adjustable power amplifier 150 is a circuit module capable of amplifying an input signal with an adjustable power amplification factor according to a control signal. The power amplification factor is denoted as A. The adjustable power amplifier 150 is connected to the controller 110 and the modem circuit 140, respectively. It receives the signal output from the modem circuit 140, amplifies it with a specific amplification factor A according to the control signal from the controller 110, and outputs the amplified signal to the antenna module 160. The amplification factor A can be adjusted by changing the power amplifier's supply voltage, or by adjusting the bias current or the gain control circuit. The adjustable range of the power amplification factor A can cover output power requirements from the milliwatt level to the hundred-watt level.

[0038] Antenna module 160 converts electrical signals into electromagnetic waves for transmission, and receives electromagnetic waves and converts them back into electrical signals. Antenna module 160 may include one or more coil / antenna elements and corresponding resonant circuits. In this embodiment, antenna module 160 is connected to the output of adjustable power amplifier 150 for signal transmission.

[0039] The controller 110 is a processing unit for executing the control method described in this application. The controller 110 is connected to the adjustable frequency divider 130, the modem circuit 140, and the adjustable power amplifier 150, respectively, and is used to send control signals and execute the method of the embodiments of this application. The controller 110 can be implemented using a microcontroller unit (MCU), a digital signal processor (DSP), a field programmable gate array (FPGA), or an application-specific integrated circuit (ASIC), etc.

[0040] like Figure 3 As shown, the receiver device 200 includes a receiver controller 210, a receiver clock source 220, a receiver adjustable frequency divider 230, a receiver modulation and demodulation circuit 240, a rectifier circuit 250, and a receiver antenna module 260.

[0041] The receiver clock source 210 is used to generate a reference frequency signal.

[0042] The receiving antenna module 220 is connected to the receiving modulation and demodulation circuit 240 and the rectifier circuit 250, and is used to receive electromagnetic wave signals emitted by the transmitting device 100 and convert them into electrical signals.

[0043] The adjustable frequency divider 230 at the receiving end is connected to the receiving end controller 210 and the receiving end clock source 220 respectively. It is used to perform frequency division processing on the reference frequency signal according to the control signal of the receiving end controller 210, so as to output local reference signals of different frequencies.

[0044] The receiver modulation and demodulation circuit 240 is connected to the receiver antenna module 260, the receiver controller 210 and the receiver adjustable frequency divider 230 respectively. It is used to demodulate the data from the received signal during the communication period and transmit it to the receiver controller 210, or to modulate the data to be transmitted and transmit it through the receiver antenna module 260.

[0045] The rectifier circuit 250 is connected to the load 270 and is used to rectify the received AC signal into DC power during the power supply period to supply the load 270.

[0046] The receiver controller 210 is responsible for coordinating the work of each module of the receiver and working with the transmitter device 100 to complete communication and energy reception.

[0047] Those skilled in the art should understand that the transmitting end device 100 and the receiving end device 200 may also include other functional components. The figures shown are merely examples, and this application does not limit them.

[0048] See Figure 4 This application provides a wireless communication and power transfer method, which can be executed by the controller 110 of the aforementioned transmitter device 100. The method includes the following steps: S410: In the first time period T0, the controller 110 controls the reference frequency signal to undergo a first frequency division process to obtain a first frequency signal, and controls the first frequency signal to be amplified with a first power amplification factor AL. The amplified first frequency signal is then transmitted through the antenna module 160 to conduct wireless communication with the receiving device 200.

[0049] Specifically, controller 110 sends a first division factor NL to adjustable frequency divider 130. Adjustable frequency divider 130 divides the reference frequency (e.g., 27MHz) generated by clock source 120, outputting a first frequency signal with frequency FH ​​= 27MHz / NL. Here, NL is a small value, for example, NL ranging from 1.8 to 4.5, so that FH is in the high-frequency range of 6-15MHz. Simultaneously, controller 110 sends a first amplification factor control signal to adjustable power amplifier 150, causing adjustable power amplifier 150 to operate with a small amplification factor AL, outputting milliwatt to ten-watt level power. Modulation / demodulation circuit 140 modulates the data to be transmitted provided by controller 110 onto this high-frequency carrier, amplifies it through adjustable power amplifier 150 (or bypasses adjustable power amplifier 150 and outputs directly when the amplification factor is set to 1 or extremely small), and then transmits it through antenna module 160.

[0050] During the first time period T0, the transmitting device 100 and the receiving device 200 perform device identification and capability negotiation. For example, the transmitting device 100 sends a query signal, and the receiving device 200 replies with information such as its device type and required power level. At this stage, only the signal needs to be correctly demodulated by the receiving end; high power is not required. The high-frequency carrier (6-15MHz) provides a sufficiently wide communication bandwidth, supporting high data transmission rates and strong anti-interference capabilities.

[0051] The value of the first power amplification factor AL should be chosen to ensure that the transmission power is in the milliwatt to watt range. Those skilled in the art should understand that the milliwatt to watt range refers to a transmission power within the range of 1 milliwatt to 1 watt. The value of AL can be determined according to actual communication requirements, for example, by experimentally determining a minimum value sufficient to guarantee reliable communication distance. Furthermore, during the first time period T0, the amplification factor AL can be a fixed value or a dynamically adjusted value (e.g., adaptively adjusted according to the communication distance), and this application does not impose any limitations on this.

[0052] S420: In the second period, the controller 110 controls the frequency division processing of the reference frequency signal to obtain at least one power supply frequency signal with a frequency lower than the first frequency, and controls the power supply frequency signal to be amplified with a power amplification factor AH greater than the first power amplification factor. The amplified second frequency signal is then transmitted through the antenna module 160 to wirelessly transmit power to the receiving device 200.

[0053] Among them, the power supply frequency FL is lower than the first frequency FH, and the power supply power amplification factor AH is greater than the first power amplification factor AL.

[0054] Specifically, controller 110 sends a power supply division factor NH to adjustable frequency divider 130, and adjustable frequency divider 130 outputs a second frequency signal with a frequency of FL = 27MHz / NH. Here, NH is a large value, for example, NH ranges from 180 to 900. Simultaneously, controller 110 sends a second amplification factor control signal to adjustable power amplifier 150, causing adjustable power amplifier 150 to operate with a large amplification factor AH.

[0055] A frequency FL lower than FH is beneficial for improving energy transmission efficiency. A power amplification factor AH greater than AL significantly increases transmission power, meeting energy transmission requirements.

[0056] In this embodiment, the first time period and the second time period can be executed cyclically. That is, after a period of energy transmission, the transmitting device 100 will re-enter the first time period (communication mode) to interact with the receiving device 200 to confirm whether energy transmission should continue, whether transmission parameters need to be adjusted, or whether the termination conditions are met. If the receiving device 200 reports that energy transmission has ended (e.g., the battery is fully charged, the device has stopped working, the device has been removed, etc.), then subsequent energy transmission will stop; otherwise, it will re-enter the second time period to continue transmitting energy. This cyclical mechanism allows the system to monitor the status in real time during energy transmission, ensuring safety and efficiency.

[0057] In this embodiment of the application, by using time-division multiplexing, different frequency division coefficients and power amplification coefficients are used in different time periods, so that the same circuit is optimized into a high-frequency low-power communication mode in the first time period and a low-frequency high-power power supply mode in the second time period, thereby realizing efficient multiplexing of communication and power supply on a single circuit.

[0058] Compared to existing technologies that require two separate circuits for communication and power supply, this application simplifies the hardware structure and reduces cost and size. Compared to solutions using a single fixed frequency, this application uses high frequency in the communication phase to obtain sufficient bandwidth and low frequency in the power supply phase to ensure conversion efficiency, thus solving the problem of performance incompatibility.

[0059] Furthermore, the aforementioned second time period can be further subdivided into the first electron supply period T1 and the second electron supply period T2.

[0060] During the first power supply period T1 (normal power supply stage), the controller 110 controls the second frequency division processing of the reference frequency signal to obtain the second frequency signal, and then amplifies the second frequency signal with the second power amplification factor A1 before transmitting it.

[0061] Specifically, controller 110 sends a second division factor N1 (e.g., N1 is approximately 200) to adjustable frequency divider 130 to obtain a frequency FL1 = 27MHz / 200 ≈ 135kHz. This frequency is in the 100-150kHz range, a frequency commonly used in the Qi wireless charging standard, and can efficiently transmit power in the watt to 10-watt range. Controller 110 simultaneously controls adjustable power amplifier 150 to operate at a second amplification factor A1, enabling the output power to reach the watt to 10-watt range.

[0062] During the second power supply period T2 (strong power supply stage), the controller 110 controls the third frequency division processing of the reference frequency signal to obtain the third frequency signal, and then amplifies the third frequency signal with the third power amplification factor A2 before transmitting it.

[0063] Specifically, controller 110 sends a third division factor N2 (e.g., N2 is approximately 600) to adjustable frequency divider 130, obtaining a frequency FL2 = 27MHz / 600 ≈ 45kHz. This frequency falls within the 30-50kHz range, a common frequency band for high-power wireless power transmission, easily capable of transmitting hundreds of watts of power. Simultaneously, controller 110 controls adjustable power amplifier 150 to operate with a larger third amplification factor A2, enabling output power to reach tens of watts or even hundreds of watts.

[0064] Among them, FL2 < FL1 < FH, and A2 > A1 > AL. That is to say, from the first stage T0 to the first electron supply period T1, and then to the second electron supply period T2, the power amplification factor gradually increases while the frequency gradually decreases.

[0065] By further subdividing the power supply stage into two sub-stages—normal power supply and high-power supply—the embodiments of this application enable a single circuit to cover the complete power range from milliwatts to watts for communication, to watts to 10 watts for normal charging, and then to high-power supply above 10 watts (e.g., 100 watts). For example, the same transmitting device can first charge a smartphone using the Qi standard (approximately 5-15W), and then switch to a high-power mode to power a blender (approximately 100-500W), greatly improving the versatility and flexibility of the device.

[0066] In some embodiments, such as Figure 5 As shown, the antenna module 160 includes a resonant circuit, which includes a coil L1 and a variable capacitor C1. The equivalent capacitance value of the variable capacitor C1 is directly adjusted by the controller 110.

[0067] There are several ways to implement the variable capacitor C1. For example, the variable capacitor C1 can be implemented using a switched capacitor array, which consists of multiple parallel capacitor branches. Each branch includes a fixed capacitor and a switching element. The control terminal of each switching element is connected to the controller 110, and the controller 110 changes the total capacitance value connected to the resonant circuit by selecting different switching combinations. Alternatively, the variable capacitor C1 can also be implemented using a varactor diode. The controller 110 continuously adjusts the junction capacitance value of the varactor diode by changing the bias voltage applied to it. Those skilled in the art should understand that the implementation of the variable capacitor C1 is not limited to the above examples, and this application does not limit it in this regard.

[0068] During the first time period T0 (communication phase), controller 110 adjusts the equivalent capacitance value of variable capacitor C1 to match the resonant frequency of the resonant circuit with the first frequency signal. For example, controller 110 selects a smaller capacitor branch or applies a higher bias voltage, reducing the equivalent capacitance value of variable capacitor C1 and raising the resonant frequency to the range of 6-15MHz. Due to the resonant matching, antenna module 160 can radiate communication signals with high efficiency, ensuring signal waveform quality and the accuracy of information transmission.

[0069] During the second time period T1 / T2 (power supply phase), controller 110 stops adjusting variable capacitor C1, or sets it to a fixed configuration aimed at maintaining maximum power output, and forces antenna module 160 to drive by increasing the power amplification factor A of adjustable power amplifier 150. At this time, the resonant frequency of antenna module 160 may not match the current carrier frequency (e.g., 135kHz or 50kHz), resulting in distortion and harmonics in the output waveform. However, during this phase, the primary goal is energy transmission rather than information transmission, and waveform distortion does not affect the energy transfer effect. As long as a sufficiently large driving voltage and current are provided, even with antenna mismatch, a considerable amount of energy can still be radiated.

[0070] The above method enables the multiplexing of communication and power transfer functions across a wide frequency range on a single antenna.

[0071] In other embodiments, see Figure 6 The antenna module 160 includes a first antenna unit 161, a second antenna unit 162, and a switching circuit 163.

[0072] The first antenna element 161 is designed to be adapted to high-frequency bands (such as 6-15MHz), and its coil parameters and resonant circuit parameters are optimized for high-frequency communication, such as smaller coil size, smaller inductance and capacitance values.

[0073] The second antenna element 162 is designed to be adapted to low frequency bands (such as 30-150KHz), and its coil parameters and resonant circuit parameters are optimized for low frequency energy transmission, such as larger coil size, larger inductance and capacitance values.

[0074] The switching circuit 163 is connected to the controller 110 and is used to select either the first antenna unit 161 or the second antenna unit 162 according to the control signal from the controller 110. The switching circuit 163 can be implemented using an RF switch, a relay, or other suitable switching element.

[0075] During the first time period T0 (communication phase), the controller 110 controls the switching circuit 163 to select the first antenna unit 161, feeding the amplified first frequency signal to the first antenna unit 161 for transmission. Because the first antenna unit 161 is adapted to the high-frequency band, it can provide good impedance matching and ensure communication quality.

[0076] During the second time period T1 / T2 (power supply phase), controller 110 controls switch circuit 163 to select second antenna unit 162, feeding the amplified power supply frequency signal (such as the second frequency signal or the third frequency signal) to second antenna unit 162 for transmission. Because the second antenna unit 162 is adapted to the low-frequency band, it can provide good impedance matching and ensure energy transmission efficiency.

[0077] Those skilled in the art should understand that Figure 6 This example uses two antenna elements, but the number of antenna elements is not limited to two. Depending on the actual application requirements, three or more antenna elements can be set to cover more frequency bands, and this application does not limit this.

[0078] By using the dual-antenna switching method described above, each antenna element only needs to cover a narrow frequency band, which reduces the difficulty of antenna design and achieves good matching performance in each frequency band.

[0079] Please continue to refer to this. Figure 3 In the receiving device 200, during the first time period (communication mode), the receiving controller 210 controls the adjustable frequency divider 230 to divide the reference frequency generated by the receiving clock source 220, outputting a high-frequency local reference signal, and controlling the receiving device 200 to enter the communication mode. The receiving modulation and demodulation circuit 240 is in operation, receiving and demodulating the query signal sent by the transmitting device 100 through the receiving antenna module 260, or modulating and transmitting the local device information. Specifically, the receiving controller 210 can control the reference frequency signal to undergo a first frequency division process to obtain a local reference signal of a first frequency (e.g., 6-15MHz).

[0080] In the second time period (energy receiving mode), the receiver controller 210 controls the receiver adjustable frequency divider 230 to divide the reference frequency generated by the receiver clock source 220, outputting a low-frequency reference signal, and controls the receiver device 200 to switch from communication mode to energy receiving mode. The high-power energy signal is received by the receiver antenna module 260 and converted into DC power by the rectifier circuit 250 to supply power to the load 270. Specifically, the receiver controller 210 can control the reference frequency signal to undergo a second frequency division to obtain a local reference signal for the power supply frequency (e.g., 100-150kHz or 30-50kHz).

[0081] The frequency of the low-frequency reference signal is the same as or proportional to the carrier frequency of the energy signal transmitted by the transmitting device 100. This low-frequency reference signal can be used for at least one of the following purposes: as a timing reference for the synchronous rectifier switching devices in the rectifier circuit 250 to achieve high-efficiency synchronous rectification; as a reference frequency for feeding back information to the transmitting device 100 during energy reception; and as a reference clock for the monitoring module in the receiving modulation and demodulation circuit 240 to monitor and protect the received energy signal.

[0082] Those skilled in the art should understand that the above uses are merely examples, and the specific application of the low-frequency reference signal can be determined according to the actual circuit design of the receiving device 200. This application does not limit it in this regard.

[0083] In this embodiment, the receiving device also adopts a time-division frequency conversion strategy, using high frequency during the communication phase to ensure communication quality, and switching to low frequency during the energy receiving phase to efficiently receive energy, thus realizing the multiplexing of communication and power receiving of a single circuit at the receiving end.

[0084] See you again Figure 2 This application also provides a wireless communication and power transmission device (i.e., a set of related modules in the transmitter device 100), the specific composition and working principle of which can be referred to the above description and will not be repeated here.

[0085] See you again Figure 3 This application also provides a wireless communication and power transmission device (i.e., a set of related modules in the receiving device 200), the specific composition and working principle of which can be referred to the above description and will not be repeated here.

[0086] This application also provides an electronic device that acts as a transmitter, enabling communication and energy transfer with a receiver device. This electronic device can be, for example, a wireless charging dock, an embedded kitchen countertop, or a power supply platform for industrial equipment.

[0087] like Figure 7 As shown, the electronic device 300 may include a processor 302 and a memory 304.

[0088] The memory 304 is used to store the computer program 306. The memory 304 may include high-speed RAM, and may also include non-volatile memory, such as at least one disk storage device. The computer program 306 may include computer-executable instructions.

[0089] The processor 302 is used to execute the computer program 306 to implement the above-described wireless communication and power transfer method embodiment.

[0090] Processor 302 may be a central processing unit (CPU), an application-specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of this application. Electronic device 300 may include one or more processors of the same type, such as one or more CPUs; or it may include processors of different types, such as one or more CPUs and one or more ASICs.

[0091] Please return to the reference. Figure 1This application also provides a wireless communication and power transfer system, including the aforementioned transmitting device 100 and receiving device 200. The transmitting device 100 and receiving device 200 exchange information during communication periods and transfer energy during power supply periods, working together to complete a full wireless power supply process.

[0092] This application also provides a computer-readable storage medium storing a computer program thereon. When the program is executed by a processor (such as controller 110), it implements the above-described embodiments of the wireless communication and power transfer method. The computer-readable storage medium may include: read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk, etc. Those skilled in the art should understand that the computer program can also be obtained and updated through network download or other means, and this application does not limit this.

[0093] This application provides a computer program that can be executed by a processor to implement the above-described wireless communication and power transfer method embodiments.

[0094] This application provides a computer program product, which includes a computer program that, when executed by a processor, implements the above-described wireless communication and power transmission method embodiments.

[0095] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A wireless communication and power transfer method, characterized in that, include: During the first time period, the reference frequency signal is controlled to undergo a first frequency division process to obtain a first frequency signal, and the first frequency signal is amplified by a first power amplification factor. The amplified first frequency signal is then transmitted through the antenna module to conduct wireless communication with a receiving device. During the second time period, the reference frequency signal is divided to obtain at least one power supply frequency signal with a frequency lower than the first frequency, and the power supply frequency signal is amplified with a power amplification factor greater than the first power amplification factor. The amplified power supply frequency signal is then transmitted through the antenna module to wirelessly transmit power to the receiving device.

2. The method according to claim 1, characterized in that, The first time period and the second time period can be executed cyclically.

3. The method according to claim 2, characterized in that, Wireless communication during the first time period includes: exchanging device identification and / or energy demand information; The step of wireless power transfer during the second time period is performed after confirming the docking device and energy requirements based on the wireless communication. The wireless communication further includes: during the energy transmission process, exchanging energy transmission status information through at least one first time period executed cyclically, the energy transmission status information including information indicating whether the energy transmission has ended.

4. The method according to claim 1, characterized in that, The second time period includes the first power supply period and the second power supply period; During the second time period, the reference frequency signal is controlled to undergo frequency division processing to obtain at least one power supply frequency signal with a frequency lower than the first frequency, and the power supply frequency signal is controlled to be amplified with a power amplification factor greater than the first power amplification factor. The amplified power supply frequency signal is then transmitted through the antenna module to wirelessly transmit power to the receiving device, including: During the first power supply period, the reference frequency signal is controlled to undergo a second frequency division process to obtain a second frequency signal, and the second frequency signal is amplified by a second power amplification factor. The amplified second frequency signal is then transmitted through the antenna module to wirelessly transmit power to the receiving device. During the second power supply period, the reference frequency signal is controlled to undergo a third frequency division process to obtain a third frequency signal. The third frequency signal is then amplified by a third power amplification factor and transmitted through the antenna module to the receiving device for wireless power transmission. Wherein, the second frequency is lower than the first frequency, and the second power amplification factor is greater than the first power amplification factor; the third frequency is lower than the second frequency, and the third power amplification factor is greater than the second power amplification factor.

5. The method according to claim 1, characterized in that, The method further includes: During the first time period, the resonant circuit of the antenna module is adjusted so that its resonant frequency matches the first frequency signal; during the second time period, the adjustment of the resonant circuit of the antenna module is stopped; or... The antenna module includes a first antenna unit and a second antenna unit; transmitting an amplified first frequency signal through the antenna module includes: controlling a switching circuit to select the first antenna unit to transmit the amplified first frequency signal through the first antenna unit, wherein the first antenna unit is adapted to the first frequency; transmitting an amplified power supply frequency signal through the antenna module includes: controlling the switching circuit to select the second antenna unit to transmit the amplified power supply frequency signal through the second antenna unit, wherein the second antenna unit is adapted to the low-frequency band where the power supply frequency signal is located.

6. The method according to claim 3, characterized in that, The first frequency is 6-15MHz, and the transmission power of the wireless communication is in the milliwatt to watt range; The second frequency is 100-150KHz, and the transmission power during the first electron supply period is in the range of watts to ten watts. The third frequency is approximately 30-50 kHz, and the transmission power during the second electron-supplying period is above 10 watts.

7. An electronic device, characterized in that, It includes a memory, a processor, and a computer program stored on the memory, wherein the processor executes the computer program to implement the method as described in any one of claims 1 to 6.

8. A wireless communication and power transmission device, characterized in that, It includes a controller, clock source, adjustable frequency divider, modem circuit, adjustable power amplifier, and antenna module, among which, The clock source is used to generate a reference frequency signal; The adjustable frequency divider is connected to the controller and the clock source respectively, and is used to perform frequency division processing on the reference frequency signal according to the control signal of the controller to output carrier signals of different frequencies; The modulation and demodulation circuit is connected to the controller and the adjustable frequency divider respectively, and is used to modulate the data to be transmitted onto the carrier signal or demodulate the data from the received signal under the control of the controller. The adjustable power amplifier is connected to the controller and the modulation and demodulation circuit respectively, and is used to amplify the signal output by the modulation and demodulation circuit with an adjustable power amplification factor according to the control signal; The antenna module is connected to the adjustable power amplifier and is used to transmit signals; The controller is used to perform the method according to any one of claims 1 to 6.

9. A wireless communication and power transmission device, characterized in that, It includes a controller, clock source, adjustable frequency divider, modem circuit, rectifier circuit, and antenna module, among which, The clock source is used to generate a reference frequency signal; The adjustable frequency divider is connected to the controller and the clock source respectively, and is used to divide the reference frequency signal according to the control signal of the controller to output local reference signals of different frequencies. The antenna module is connected to the modulation / demodulation circuit and the rectifier circuit; The controller is used to control the adjustable frequency divider to output a local reference signal of a first frequency in a first time period, and to control the wireless communication and power transmission device to enter the power receiving mode in a second time period. The modulation and demodulation circuit is connected to the antenna module, the controller and the adjustable frequency divider respectively, and is used to demodulate the signal received by the antenna module based on the local reference signal of the first frequency in the first time period, or to modulate the data to be transmitted and transmit it through the antenna module. The rectifier circuit is connected to the load and is used to rectify the energy signal received by the antenna module into DC power to supply the load during the second time period.

10. A wireless communication and power transfer system, characterized in that, It includes a transmitting device and a receiving device; The transmitting device includes the apparatus of claim 8, and the receiving device includes the apparatus of claim 9.

Images