Method for wireless charging, transmitting-end device, and wireless charging device

Abstract

A method for wireless charging, a transmitting-end device (40) and a wireless charging device (10, 20, 30). The charging process between the transmitting-end device (40) and the wireless charging device (10, 20, 30) can form a cyclic process. That is, the transmitting-end device (40) sends an electromagnetic wave signal to the wireless charging device (10, 20, 30) for charging, and the wireless charging device (10, 20, 30) uses a part of the electromagnetic wave signal for charging and another part of the electromagnetic wave signal for feedback to the transmitting-end device (40) for amplification, and then uses the amplified electromagnetic wave signal to charge the wireless charging device (10, 20, 30). In this way, the transmitting-end device (40) and the wireless charging device (10, 20, 30) can reach a stable power range for wireless charging, thereby improving the charging performance.

Description

Technical Field

[0001] The present application relates to the field of wireless charging, and more particularly, to a method for wireless charging, a transmitting device, and a wireless charging device. Background Art

[0002] With the development of intelligent technologies, the number of terminals is increasing. For example, in addition to devices such as mobile phones, tablets, personal computers, cars, and large screens, there are also various small terminals such as smart home sensors, household appliances, and health monitors. Due to the frequent use of batteries, there will be a problem of battery replacement, and thus the use of wireless charging technology will become more and more popular.

[0003] In traditional solutions, the transmitting device sends an electromagnetic wave signal, and the wireless charging device can charge according to this electromagnetic wave signal. For example, there are many applications in near-field wireless charging. However, in far-field wireless charging, due to the positional relationship between the transmitting device and the wireless charging device, the charging performance of the wireless charging technology is not high. Therefore, with the increasing popularity of the application of wireless charging technology, how to improve the charging performance of wireless charging urgently needs to be solved. Summary of the Invention

[0004] The present application provides a method for wireless charging, a transmitting device, and a wireless charging device, which can improve the charging performance of wireless charging.

[0005] In a first aspect, a method for wireless charging is provided. The method includes: the transmitting device receives a first electromagnetic wave signal from the wireless charging device; the transmitting device amplifies all or part of the first electromagnetic wave signal to obtain a third electromagnetic wave signal; the transmitting device sends the third electromagnetic wave signal to the wireless charging device, and the third electromagnetic wave signal is used to charge the wireless charging device.

[0006] In the embodiment of the present application, the charging process between the transmitting device and the wireless charging device can form a cyclic process. That is, the transmitting device sends an electromagnetic wave signal to the wireless charging device for charging. The wireless charging device uses a part of the electromagnetic wave signal for charging and another part of the electromagnetic wave signal for feedback to the transmitting device for amplification, and then uses the amplified electromagnetic wave signal to charge the wireless charging device again. In this way, the transmitting device and the wireless charging device can reach a stable power range for wireless charging, thereby improving the charging performance.

[0007] In combination with the first aspect, in some possible implementation manners, the transmitting device amplifies a part of the first electromagnetic wave signal to obtain a third electromagnetic wave signal, including: separating the first electromagnetic wave to obtain a second electromagnetic wave signal and a fourth electromagnetic wave signal; the transmitting device determining a gain coefficient according to the fourth electromagnetic wave signal; and the transmitting device amplifying the second electromagnetic wave signal according to the gain coefficient to obtain the third electromagnetic wave signal.

[0008] The transmitting device may adjust the gain coefficient according to the power magnitude of the fourth electromagnetic wave signal. For example, when the power of the fourth electromagnetic wave signal is low (e.g., low level), the gain coefficient is increased; when the power of the fourth electromagnetic wave signal is high (e.g., high level), the gain coefficient is decreased. For example, the transmitting device may preset a preset power threshold, and judge the level magnitude of the fourth electromagnetic wave signal according to the magnitude relationship with the preset power threshold. In this way, the transmitting device can adjust the power of the third electromagnetic wave signal through the gain coefficient so that the power of the third electromagnetic wave signal can reach a stable power range, which helps to improve the charging performance of wireless charging.

[0009] It can be understood that the fourth electromagnetic wave signal may be a partial signal of the first electromagnetic wave signal, where the fourth electromagnetic wave signal is different from the second electromagnetic wave signal. In other words, the first electromagnetic wave signal can be separated into a second electromagnetic wave signal and a fourth electromagnetic wave signal. For example, power or energy is distributed to obtain the second electromagnetic wave signal and the fourth electromagnetic wave signal. Specifically, in implementation, power or energy distribution may be performed through a power divider, or power or energy may be electromagnetically coupled through a coupler. Among them, the energy of the second electromagnetic wave signal and the energy of the fourth electromagnetic wave signal may be equally distributed or unevenly distributed.

[0010] It can also be understood that in practical applications, the first electromagnetic wave signal is electromagnetically coupled for power or energy through a coupler to obtain a second electromagnetic wave signal and a fourth electromagnetic wave signal. In addition, the energy of the fourth electromagnetic wave signal is usually less than the energy of the second electromagnetic wave signal.

[0011] In combination with the first aspect, in some possible implementation manners, the method further includes: the transmitting device receiving a fifth electromagnetic wave signal from the wireless charging device, where the fifth electromagnetic wave signal is separated from the third electromagnetic wave signal by the wireless charging device; and when the signal strength of the fifth electromagnetic wave signal is less than or equal to a preset value, the transmitting device stops charging the wireless charging device.

[0012] The transmitting device can determine whether to continue charging the wireless charging device according to the magnitude relationship between the signal strength of the fifth electromagnetic wave signal and the first preset signal strength threshold. Alternatively, the transmitting device can determine whether to continue charging the wireless charging device according to the magnitude relationship between the difference between the signal strength of the currently received electromagnetic wave signal and the signal strength of the previous electromagnetic wave signal and the second preset signal strength threshold. When the occlusion reaches a certain degree, it can avoid the radiation pollution of the electromagnetic wave signal caused by continuously transmitting the electromagnetic wave signal. In addition, if the occluding object is a human body, the embodiments of the present application can reduce the radiation hazard to the human body.

[0013] It can be understood that the fifth electromagnetic wave signal is obtained by separating the third electromagnetic wave.

[0014] Combined with the first aspect, in some possible implementation manners, the method further includes: the transmitting device receives a charging connection request from the wireless charging device, and the charging connection request includes charging power requirement information of the wireless charging device; the transmitting device determines whether it can charge the wireless charging device according to the charging power requirement information; the transmitting device sends a charging connection response message to the wireless charging device, and the charging connection response message is used to indicate whether it can charge the wireless charging device.

[0015] The wireless charging device can actively send a charging connection request and carry the charging power requirement information indicating the required power. The transmitting device receives the charging connection request, determines whether it can meet the power requirement according to the charging power requirement information in the charging connection request, and informs the wireless charging device of the result through the charging connection response message. If the transmitting device determines that it can charge the wireless charging device, the charging connection response message indicates that it can charge the wireless charging device, so that the transmitting device and the wireless charging device can establish a charging connection.

[0016] Combined with the first aspect, in some possible implementation manners, when the charging connection response message indicates that the transmitting device cannot charge the wireless charging device, the charging connection response message further includes a delay duration for re-establishing the charging connection.

[0017] When the charging connection response message indicates that the transmitting device cannot charge the wireless charging device, the charging connection response message further includes a delay duration for re-establishing the charging connection. In this way, when the delay duration arrives, the wireless charging device can re-send the charging connection request to the transmitting device, avoiding the power consumption overhead caused by multiple requests of the wireless charging device when the transmitting device cannot provide charging services.

[0018] In some possible implementations, before the wireless charging device can send a charging connection request to the transmitting device, the wireless charging device may also receive charging broadcast information from the transmitting device, where the charging broadcast information is used to indicate that the transmitting device has charging capabilities.

[0019] The charging broadcast information may include an identifier of the wireless charging device. That is, the transmitting device is used to trigger the wireless charging device to initiate a charging connection request. This avoids the wireless charging device sending a charging connection request to a transmitting device without charging capabilities, which helps reduce the latency in establishing a charging connection.

[0020] In combination with the first aspect, in some possible implementations, the method further includes: the transmitting device sending charging broadcast information, where the charging broadcast information includes the charging capabilities of the transmitting device; the transmitting device receiving a charging connection request from the wireless charging device, where the charging connection request is used to request charging for the wireless charging device.

[0021] The transmitting device can actively send charging broadcast information, and the wireless charging device determines whether it can meet the power requirements of the wireless charging device based on the charging capabilities included in the received charging broadcast information. If the charging capabilities of the transmitting device do not meet the power requirements of the wireless charging device, the wireless charging device may not send the charging connection request to the transmitting device, thus saving the power consumption overhead of the wireless charging device.

[0022] In a second aspect, a method for wireless charging is provided, the method including: the wireless charging device receiving a third electromagnetic wave signal from the transmitting device; the wireless charging device separating the third electromagnetic wave signal to obtain a fifth electromagnetic wave signal and a sixth electromagnetic wave signal; the wireless charging device sending the fifth electromagnetic wave signal to the transmitting device; the wireless charging device charging according to the sixth electromagnetic wave signal.

[0023] In the charging process between the transmitting device and the wireless charging device in the embodiments of the present application, a cyclic process can be formed. That is, the transmitting device sends an electromagnetic wave signal to the wireless charging device for charging, the wireless charging device uses a part of the electromagnetic wave signal for charging, and another part of the electromagnetic wave signal is used to feedback to the transmitting device for amplification, and the amplified electromagnetic wave signal is used again to charge the wireless charging device. In this way, the transmitting device and the wireless charging device can reach a stable power range for wireless charging, thereby improving the charging performance.

[0024] It can be understood that the fifth electromagnetic wave signal and the sixth electromagnetic wave can be partial signals of the third electromagnetic wave signal respectively. In other words, the third electromagnetic wave signal can be separated into the fifth electromagnetic wave signal and the sixth electromagnetic wave signal. For example, the fifth electromagnetic wave signal and the sixth electromagnetic wave signal are obtained by power or energy distribution through a power divider, or the fifth electromagnetic wave signal and the sixth electromagnetic wave signal are obtained by electromagnetic coupling of power or energy through a coupler. Among them, the energy of the fifth electromagnetic wave signal and the energy of the sixth electromagnetic wave signal can be evenly distributed or unevenly distributed.

[0025] It can also be understood that in practical applications, the third electromagnetic wave signal is subjected to electromagnetic coupling of power or energy through a coupler to obtain the fifth electromagnetic wave signal and the sixth electromagnetic wave signal. In addition, the energy of the fifth electromagnetic wave signal is usually less than the energy of the sixth electromagnetic wave signal.

[0026] Combined with the second aspect, in some possible implementation manners, the method further includes: the wireless charging device sends a charging connection request to the transmitting end device, and the charging connection request includes charging power demand information of the wireless charging device; the wireless charging device receives a charging connection response message from the transmitting end device, and the charging connection response message is used to indicate whether the transmitting end device can charge the wireless charging device.

[0027] The wireless charging device can actively send a charging connection request and carry the charging power demand information indicating the required power. The transmitting end device receives the charging connection request, determines whether it can meet the power demand according to the charging power demand information in the charging connection request, and informs the wireless charging device of the result through the charging connection response message. If the transmitting end device determines that it can charge the wireless charging device, the charging connection response message indicates that it can charge the wireless charging device, so that the charging connection can be established between the transmitting end device and the wireless charging device.

[0028] Combined with the second aspect, in some possible implementation manners, when the charging connection response message indicates that the transmitting end device cannot charge the wireless charging device, the charging connection response message further includes a delay duration for re-establishing the charging connection, and the method further includes: when the delay duration arrives, the wireless charging device re-sends the charging connection request to the transmitting end device.

[0029] In the case that the charging connection response message indicates that the transmitting device cannot charge the wireless charging device, the charging connection response message further includes a delay duration for re - establishing the charging connection. In this way, when the delay duration arrives, the wireless charging device can re - send the charging connection request to the transmitting device, avoiding the power consumption overhead caused by multiple requests of the wireless charging device when the transmitting device cannot provide charging services.

[0030] Combined with the second aspect, in some possible implementation manners, the method further includes: the wireless charging device receives charging broadcast information, and the charging broadcast information includes the charging capability of the transmitting device; in the case that the charging capability of the transmitting device meets the power requirement of the wireless charging device, the wireless charging device sends a charging connection request to the transmitting device, and the charging connection request is used to request charging for the wireless charging device.

[0031] The transmitting device can actively send charging broadcast information, and the wireless charging device determines whether it can meet the power requirement of the wireless charging device according to the charging capability included in the received charging broadcast information. If the charging capability of the transmitting device does not meet the power requirement of the wireless charging device, the wireless charging device may not send the charging connection request to the transmitting device, thereby saving the power consumption overhead of the wireless charging device.

[0032] In a third aspect, a transmitting device for wireless charging is provided, including: a transceiver antenna, configured to receive a first electromagnetic wave signal from a wireless charging device and forward all or part of the first electromagnetic wave signal to a power amplification module; the power amplification module, configured to perform power amplification on all or part of the first electromagnetic wave signal to obtain a third electromagnetic wave signal and send the third electromagnetic wave signal to the transceiver antenna; the transceiver antenna is further configured to send the third electromagnetic wave signal to the wireless charging device, and the third electromagnetic wave signal is used to charge the wireless charging device.

[0033] In the charging process between the transmitting device and the wireless charging device in the embodiments of the present application, a cyclic process can be formed. That is, the transmitting device sends an electromagnetic wave signal to the wireless charging device for charging, the wireless charging device uses a part of the electromagnetic wave signal for charging, and the other part of the electromagnetic wave signal is used to feedback to the transmitting device for amplification, and the amplified electromagnetic wave signal is used to charge the wireless charging device again. In this way, the transmitting device and the wireless charging device can reach a stable power range for wireless charging, thereby improving the charging performance.

[0034] In combination with the third aspect, in some possible implementation manners, the transmitting device further includes a power distribution module and a gain control module. The power distribution module is configured to separate the first electromagnetic wave signal to obtain the second electromagnetic wave signal and the fourth electromagnetic wave signal, and send the fourth electromagnetic wave signal to the gain control module. The gain control module is configured to determine a gain coefficient according to the fourth electromagnetic wave signal, and send the gain coefficient to the power amplification module. The power amplification module is configured to perform power amplification on all or part of the first electromagnetic wave signal to obtain a third electromagnetic wave signal, and send the third electromagnetic wave signal to the transceiver antenna. Specifically, the power amplification module is configured to perform power amplification on the second electromagnetic wave signal according to the gain coefficient to obtain the third electromagnetic wave signal, and send the third electromagnetic wave signal to the transceiver antenna.

[0035] The transmitting device can adjust the gain coefficient according to the power magnitude of the fourth electromagnetic wave signal. For example, when the power of the fourth electromagnetic wave signal is low (e.g., low level), the gain coefficient is increased; when the power of the fourth electromagnetic wave signal is high (e.g., high level), the gain coefficient is decreased. For example, the transmitting device can preset a preset power threshold, and judge the level magnitude of the fourth electromagnetic wave signal through the magnitude relationship with the preset power threshold. In this way, the transmitting device can adjust the power of the third electromagnetic wave signal through the gain coefficient so that the power of the third electromagnetic wave signal can reach a stable power range, which helps to improve the charging performance of wireless charging.

[0036] It can be understood that the fourth electromagnetic wave signal can be a partial signal of the first electromagnetic wave signal, where the fourth electromagnetic wave signal is different from the second electromagnetic wave signal. In other words, the first electromagnetic wave signal can be separated into the second electromagnetic wave signal and the fourth electromagnetic wave signal. For example, the power or energy is distributed through a power divider to obtain the second electromagnetic wave signal and the fourth electromagnetic wave signal, or the power or energy is electromagnetically coupled through a coupler to obtain the second electromagnetic wave signal and the fourth electromagnetic wave signal. Among them, the energy of the second electromagnetic wave signal and the energy of the fourth electromagnetic wave signal can be evenly distributed or unevenly distributed.

[0037] It can also be understood that in practical applications, the first electromagnetic wave signal is electromagnetically coupled for power or energy through a coupler to obtain the second electromagnetic wave signal and the fourth electromagnetic wave signal. In addition, the energy of the fourth electromagnetic wave signal is usually less than the energy of the second electromagnetic wave signal.

[0038] In combination with the third aspect, in some possible implementation manners, the transceiver antenna is further configured to receive a fifth electromagnetic wave signal from the wireless charging device, where the fifth electromagnetic wave signal is separated from the third electromagnetic wave signal by the wireless charging device; the transmitting-end device further includes a processing module, and the processing module is configured to stop charging the wireless charging device when the signal strength of the fifth electromagnetic wave signal is less than or equal to a preset value.

[0039] The transmitting-end device may determine whether to continue charging the wireless charging device according to the magnitude relationship between the signal strength of the fifth electromagnetic wave signal and a first preset signal strength threshold. Alternatively, the transmitting-end device may determine whether to continue charging the wireless charging device according to the magnitude relationship between the difference between the signal strength of the currently received electromagnetic wave signal and the signal strength of the previous electromagnetic wave signal and a second preset signal strength threshold. When the occlusion reaches a certain degree, it is possible to avoid the radiation pollution of the electromagnetic wave signal caused by continuously transmitting the electromagnetic wave signal. In addition, if the occluding object is a human body, the embodiments of the present application can reduce the radiation hazard to the human body.

[0040] It can be understood that the fifth electromagnetic wave signal is obtained by separating the third electromagnetic wave.

[0041] In combination with the third aspect, in some possible implementation manners, the transceiver antenna is further configured to receive a charging connection request from the wireless charging device, where the charging connection request includes charging power demand information of the wireless charging device; the transmitting-end device further includes a processing module, and the processing module is configured to determine whether it can charge the wireless charging device according to the charging power demand information; the transceiver antenna is further configured to send a charging connection response message to the wireless charging device, and the charging connection response message is used to indicate whether it can charge the wireless charging device.

[0042] The wireless charging device may actively send a charging connection request and carry the charging power demand information indicating the required power. The transmitting-end device receives the charging connection request, determines whether it can meet the power demand according to the charging power demand information in the charging connection request, and informs the wireless charging device of the result through the charging connection response message. If the transmitting-end device determines that it can charge the wireless charging device, the charging connection response message indicates that it can charge the wireless charging device, so that the transmitting-end device and the wireless charging device can establish a charging connection.

[0043] In combination with the third aspect, in some possible implementation manners, when the charging connection response message indicates that it cannot charge the wireless charging device, the charging connection response message further includes a delay duration for re-establishing the charging connection.

[0044] In the case that the charging connection response message indicates that the transmitting device cannot charge the wireless charging device, the charging connection response message further includes a delay duration for re - establishing the charging connection. In this way, when the delay duration arrives, the wireless charging device can re - send the charging connection request to the transmitting device, avoiding the power consumption overhead caused by multiple requests of the wireless charging device when the transmitting device cannot provide charging services.

[0045] Combined with the third aspect, in some possible implementation manners, the transceiver antenna is further configured to send charging broadcast information, where the charging broadcast information includes the charging capability of the transmitting device; the transceiver antenna is further configured to receive a charging connection request from the wireless charging device, and the charging connection request is used to request charging for the wireless charging device.

[0046] The transmitting device can actively send charging broadcast information, and the wireless charging device determines whether it can meet the power requirement of the wireless charging device according to the charging capability included in the received charging broadcast information. If the charging capability of the transmitting device does not meet the power requirement of the wireless charging device, the wireless charging device may not send the charging connection request to the transmitting device, thereby saving the power consumption overhead of the wireless charging device.

[0047] Combined with the third aspect, in some possible implementation manners, the transceiver antenna includes a Van Atta antenna array.

[0048] The transceiver antenna can be implemented by a Van Atta antenna array. The Van Atta antenna array can achieve a phase difference of between adjacent antenna elements, so as to enable the transmission of reverse signals, thereby improving the transmission performance of electromagnetic wave signals between the transmitting device and the wireless charging device, and enabling the directivity of energy transmission.

[0049] Combined with the third aspect, in some possible implementation manners, the transceiver antenna includes a plurality of antenna elements, and each antenna element in the plurality of antenna elements includes an antenna, one or more filters, and one or more mixers.

[0050] The transceiver antenna can also be implemented by a mixer antenna array, that is, the transmission of reverse signals is achieved, thereby improving the transmission performance of electromagnetic wave signals between the transmitting device and the wireless charging device, and enabling the directivity of energy transmission.

[0051] Combined with the third aspect, in some possible implementation manners, the power distribution module is disposed between the antenna feed point of the antenna and the mixer.

[0052] The connection position of the power distribution module and the transceiver antenna can be set at a position close to the antenna feed point of the antenna, so as to reduce the energy loss.

[0053] In combination with the third aspect, in some possible implementation manners, when each antenna element includes an antenna, a filter, and a mixer, the frequency of the first input signal of the mixer is twice the frequency of the second input signal, the second input signal is the output signal after the input signal of the transceiver antenna passes through the antenna, the output signal of the mixer is the input signal of the filter, and the filter is used to filter out a frequency that is three times the frequency of the second input signal.

[0054] There are specific requirements for the input signal of the mixer and the filtering ability of the filter in the mixing antenna array. For example, when the frequency of the first input signal of the mixer is set to be twice the frequency of the second input signal, and the filter is set to be able to filter out a frequency that is three times the frequency of the second input signal, phase inversion can be achieved, that is, the beams of signal transmission are opposite, thereby improving the transmission performance of the electromagnetic wave signal between the transmitting device and the wireless charging device, and enabling the directivity of energy transmission.

[0055] In combination with the third aspect, in some possible implementation manners, when each antenna element includes an antenna, two filters, and two mixers, the frequency of the first input signal of the first mixer among the two mixers is the sum of a preset frequency and the frequency of the second input signal, the second input signal is the output signal of the antenna, the output signal of the first mixer is the input signal of the first filter among the two filters, the output signal of the first filter is the third input signal of the second mixer among the two mixers, the frequency of the fourth input signal of the second mixer is the difference between the frequency of the second input signal and the preset frequency, the output signal of the second mixer is the input signal of the second filter among the two filters, the first filter is used to filter out a frequency that is the sum of the preset frequency and twice the frequency of the second input signal, and the second filter is used to filter out a frequency that is the difference between the frequency of the second input signal and twice the preset frequency.

[0056] There are specific requirements for the input signal of the mixer and the filtering ability of the filter in the mixing antenna array. For example, each antenna element can perform double mixing. In this way, phase inversion is achieved, that is, the beams of signal transmission are opposite, thereby improving the transmission performance of the electromagnetic wave signal between the transmitting device and the wireless charging device, and enabling the directivity of energy transmission.

[0057] In combination with the third aspect, in some possible implementation manners, when each antenna element includes an antenna, a filter, and a mixer, the frequency of the first input signal of the mixer is twice the sum of the frequency of the second input signal and a preset frequency, the second input signal is the output signal of the antenna, and the frequency that the filter is used to filter out is the sum of three times the frequency of the second input signal and twice the preset frequency.

[0058] The transceiver antenna can also be used to set the frequency of the output signal to be different from the frequency of the input signal, thereby avoiding interference between uplink and downlink signals.

[0059] In combination with the third aspect, in some possible implementation manners, the power amplification module includes one or more power amplifiers.

[0060] The power amplification module can be implemented by one or more power amplifiers. For example, multiple power amplifiers can be connected in series to achieve multi-stage amplification, so as to provide a greater gain. Or multiple power amplifiers are connected in parallel, which can improve linearity and support a wider range of gain adjustment.

[0061] In combination with the third aspect, in some possible implementation manners, the power distribution module includes a coupler or a power divider.

[0062] When the power distribution module is implemented by a coupler, wires with electromagnetic coupling effects can be placed near the transmission line, and the function of signal distribution of power between the main transmission line and the coupled wire line can be achieved.

[0063] In a fourth aspect, a wireless charging device is provided, including: a transceiver antenna, configured to receive a third electromagnetic wave signal from a transmitting-end device and forward the third electromagnetic wave signal to a power distribution module; the power distribution module, configured to separate the third electromagnetic wave signal to obtain a fifth electromagnetic wave signal and a sixth electromagnetic wave signal, forward the fifth electromagnetic wave signal to the transceiver antenna, and forward the sixth electromagnetic wave to a charging module; the transceiver antenna, further configured to send the fifth electromagnetic wave signal to the transmitting-end device; the charging module, configured to charge according to the sixth electromagnetic wave signal.

[0064] In the charging process between the transmitting-end device and the wireless charging device in the embodiments of the present application, a cyclic process can be formed. That is, the transmitting-end device sends an electromagnetic wave signal to the wireless charging device for charging, the wireless charging device uses a part of the electromagnetic wave signal for charging, and another part of the electromagnetic wave signal is used to feedback to the transmitting-end device for amplification, and the amplified electromagnetic wave signal is used to charge the wireless charging device again. In this way, the transmitting-end device and the wireless charging device can reach a stable power range for wireless charging, thereby improving the charging performance.

[0065] It can be understood that the fifth electromagnetic wave signal and the sixth electromagnetic wave can be partial signals of the third electromagnetic wave signal respectively. In other words, the third electromagnetic wave signal can be separated into the fifth electromagnetic wave signal and the sixth electromagnetic wave signal. For example, the fifth electromagnetic wave signal and the sixth electromagnetic wave signal are obtained by power or energy distribution through a power divider, or the fifth electromagnetic wave signal and the sixth electromagnetic wave signal are obtained by electromagnetic coupling of power or energy through a coupler. Among them, the energy of the fifth electromagnetic wave signal and the energy of the sixth electromagnetic wave signal can be evenly distributed or unevenly distributed.

[0066] It can also be understood that in practical applications, the third electromagnetic wave signal is subjected to electromagnetic coupling of power or energy through a coupler to obtain the fifth electromagnetic wave signal and the sixth electromagnetic wave signal. In addition, the energy of the fifth electromagnetic wave signal is usually less than the energy of the sixth electromagnetic wave signal.

[0067] Combined with the fourth aspect, in some possible implementation manners, the transceiver antenna is further configured to send a charging connection request to the transmitting end device, where the charging connection request includes charging power demand information of the wireless charging device; the transceiver antenna is further configured to receive a charging connection response message from the transmitting end device, where the charging connection response message is used to indicate whether charging can be performed on the wireless charging device.

[0068] The wireless charging device can actively send a charging connection request and carry the charging power demand information indicating the required power. The transmitting end device receives the charging connection request, determines whether the power demand can be met according to the charging power demand information in the charging connection request, and informs the wireless charging device of the result through the charging connection response message. If the transmitting end device determines that charging can be performed on the wireless charging device, the charging connection response message indicates that charging can be performed on the wireless charging device, so that a charging connection can be established between the transmitting end device and the wireless charging device.

[0069] Combined with the fourth aspect, in some possible implementation manners, in the case where the charging connection response message indicates that charging cannot be performed on the wireless charging device, the charging connection response message further includes a delay duration for re-establishing the charging connection. When the delay duration arrives, the transceiver antenna is further configured to re-send the charging connection request to the transmitting end device.

[0070] In the case where the charging connection response message indicates that the transmitting end device cannot perform charging on the wireless charging device, the charging connection response message further includes a delay duration for re-establishing the charging connection. In this way, when the delay duration arrives, the wireless charging device can re-send the charging connection request to the transmitting end device, avoiding the power consumption overhead caused by multiple requests of the wireless charging device when the transmitting end device cannot provide charging services.

[0071] In combination with the fourth aspect, in some possible implementation manners, the transceiver antenna is further configured to receive charging broadcast information, where the charging broadcast information includes the charging capability of the transmitting device; the transceiver antenna is further configured to send a charging connection request to the transmitting device when the charging capability of the transmitting device meets the power requirement of the wireless charging device, and the charging connection request is used to request charging for the wireless charging device.

[0072] The transmitting device can actively send the charging broadcast information, and the wireless charging device determines whether it can meet the power requirement of the wireless charging device according to the charging capability included in the received charging broadcast information. If the charging capability of the transmitting device does not meet the power requirement of the wireless charging device, the wireless charging device may not send the charging connection request to the transmitting device, thereby saving the power consumption overhead of the wireless charging device.

[0073] In combination with the fourth aspect, in some possible implementation manners, the transceiver antenna includes a Van Atta antenna array.

[0074] The transceiver antenna can be implemented by a Van Atta antenna array. The Van Atta antenna array can achieve a phase difference of between adjacent antenna elements, so as to achieve the transmission of reverse signals, thereby improving the transmission performance of electromagnetic wave signals between the transmitting device and the wireless charging device, and enabling the directivity of energy transmission.

[0075] In combination with the fourth aspect, in some possible implementation manners, the transceiver antenna includes a plurality of antenna elements, and each antenna element in the plurality of antenna elements includes an antenna, one or more filters, and one or more mixers, and the mixer antenna array combination includes one or more mixer antenna arrays.

[0076] The transceiver antenna can also be implemented by a mixer antenna array, that is, the transmission of reverse signals is achieved, thereby improving the transmission performance of electromagnetic wave signals between the transmitting device and the wireless charging device, and enabling the directivity of energy transmission.

[0077] In combination with the fourth aspect, in some possible implementation manners, the power distribution module is disposed between the antenna feed point of the mixer antenna array combination and the mixer.

[0078] The connection position of the power distribution module and the transceiver antenna can be set at a position close to the antenna feed point of the antenna, so as to reduce the energy loss.

[0079] In combination with the fourth aspect, in some possible implementation manners, when each antenna element includes an antenna, a filter, and a mixer, the frequency of the first input signal of the mixer is twice the frequency of the second input signal, the second input signal is the output signal after the input signal of the transceiver antenna passes through the antenna, the output signal of the mixer is the input signal of the filter, and the filter is used to filter out a frequency that is three times the frequency of the second input signal.

[0080] In the mixing antenna array, there are specific requirements for the input signal of the mixer and the filtering ability of the filter. For example, when the frequency of the first input signal of the mixer is set to be twice the frequency of the second input signal, and the filter is set to be able to filter out a frequency that is three times the frequency of the second input signal, phase inversion can be achieved, that is, the beam of signal transmission is reversed, thereby improving the transmission performance of the electromagnetic wave signal between the transmitting device and the wireless charging device, and enabling the directivity of energy transmission.

[0081] In combination with the fourth aspect, in some possible implementation manners, when each antenna element includes a mixing antenna array combination, two filters, and two mixers, the frequency of the first input signal of the first mixer among the two mixers is the sum of a preset frequency and the frequency of the second input signal, the second input signal is the output signal after the input signal of the transceiver antenna passes through the antenna, the output signal of the first mixer is the input signal of the first filter among the two filters, the output signal of the first filter is the third input signal of the second mixer among the two mixers, the frequency of the fourth input signal of the second mixer is the difference between the frequency of the second input signal and the preset frequency, the output signal of the second mixer is the input signal of the second filter among the two filters, the first filter is used to filter out a frequency that is the sum of the preset frequency and twice the frequency of the second input signal, and the second filter is used to filter out a frequency that is the difference between the frequency of the second input signal and twice the preset frequency.

[0082] In the mixing antenna array, there are specific requirements for the input signal of the mixer and the filtering ability of the filter. For example, each antenna element can perform secondary mixing. This achieves phase inversion, that is, the beam of signal transmission is reversed, thereby improving the transmission performance of the electromagnetic wave signal between the transmitting device and the wireless charging device, and enabling the directivity of energy transmission.

[0083] In combination with the fourth aspect, in some possible implementation manners, when each antenna element includes an antenna, a filter, and a mixer, the frequency of the first input signal of the mixer is twice the sum of the frequency of the second input signal and a preset frequency, the second input signal is the output signal after the input signal of the transceiver antenna passes through the antenna, and the frequency that the filter is used to filter out is the difference between three times the frequency of the second input signal and twice the preset frequency.

[0084] The transceiver antenna can also be used to set the frequency of the output signal to be different from the frequency of the input signal, so as to avoid interference between the uplink and downlink signals.

[0085] In combination with the fourth aspect, in some possible implementation manners, the power distribution module includes a coupler or a power divider.

[0086] When the power distribution module is implemented by a coupler, a wire with electromagnetic coupling effect can be placed near the transmission line, so as to realize the function of signal distribution of power between the main transmission line and the coupled wire line.

[0087] In a fifth aspect, a wireless charging system is provided, and the wireless charging system includes the transmitting end device described in the first aspect and the wireless charging device described in the second aspect.

[0088] Based on the above technical solutions, the charging process between the transmitting end device and the wireless charging device in the embodiments of the present application can form a cyclic process. That is, the transmitting end device sends an electromagnetic wave signal to the wireless charging device for charging, the wireless charging device uses a part of the electromagnetic wave signal for charging, and another part of the electromagnetic wave signal is used to feedback to the transmitting end device for amplification, and the amplified electromagnetic wave signal is used to charge the wireless charging device again. In this way, the transmitting end device and the wireless charging device can reach a stable power range for wireless charging, thereby improving the charging performance. Description of the Drawings

[0089] Figure 1 is a schematic diagram of an application scenario of wireless charging in the present application;

[0090] Figure 2 is a schematic flowchart of a method for wireless charging in an embodiment of the present application;

[0091] Figure 3 is a schematic block diagram of a transmitting end device for wireless charging in an embodiment of the present application;

[0092] Figure 4 is a schematic diagram of a Van Atta antenna array in an embodiment of the present application;

[0093] Figure 5 is a schematic diagram of a mixing antenna array in an embodiment of the present application;

[0094] Figure 6 It is a schematic diagram of another mixing antenna array according to an embodiment of the present application;

[0095] Figure 7 It is a schematic diagram of yet another mixing antenna array according to an embodiment of the present application;

[0096] Figure 8 It is a schematic diagram of the connection relationship between the mixing antenna array and the power distribution module according to an embodiment of the present application;

[0097] Figure 9 It is a schematic block diagram of a wireless charging device according to an embodiment of the present application. Detailed implementation manners

[0098] Next, the technical solutions in the present application will be described with reference to the accompanying drawings.

[0099] The wireless charging device in the embodiments of the present application may refer to a user equipment, an access terminal, a user unit, a user station, a mobile station, a mobile terminal, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent or a user device. The terminal device may also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with wireless communication function, a computing device or other processing devices connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a future 5G network or a terminal device in a future evolved Public Land Mobile Network (PLMN), etc. The embodiments of the present application are not limited thereto.

[0100] The transmitting-end device in the embodiments of the present application may be a device for charging the wireless charging device. For example, it may be a wireless power transmitter, a wireless charging board, a mobile power supply, a vehicle-mounted device, etc. The embodiments of the present application are not limited thereto.

[0101] Figure 1It is a schematic diagram of the application scenario of wireless charging in this application. This application scenario may include at least one charging device (for example, wireless charging device 10, wireless charging device 20, and wireless charging device 30) and a transmitting device 40. The transmitting device 40 can be used to send electromagnetic wave signals, and the wireless charging device can be charged according to the received electromagnetic wave signals. Among them, wireless charging device 10 can be a tablet, wireless charging device 20 can be a mobile phone, and wireless charging device 30 can be a wearable device (such as a watch, headphones, etc.).

[0102] In addition, wireless charging device 20 can also be regarded as a transmitting device, so wireless charging device 20 can also charge wireless charging device 30.

[0103] It should be noted that the embodiments of this application can be applied to a wireless charging system including one or more transmitting devices, or can be applied to a communication system including one or more charging devices. This application does not limit this.

[0104] Figure 2 It shows a schematic flowchart of the method for wireless charging in the embodiments of this application.

[0105] 201, the transmitting device receives a first electromagnetic wave signal from the wireless charging device. Correspondingly, the wireless charging device sends the first electromagnetic wave signal to the transmitting device.

[0106] 202, the transmitting device amplifies all or part of the first electromagnetic wave signal to obtain a third electromagnetic wave signal.

[0107] Specifically, the transmitting device can obtain all or part of the first electromagnetic wave signal according to the first electromagnetic wave signal (for example, hereinafter referred to as the second electromagnetic wave signal). For example, the second electromagnetic wave signal can be a partial signal of the first electromagnetic wave signal, or the second electromagnetic wave signal is the same as the first electromagnetic wave signal.

[0108] It should be noted that the gain coefficient required for the transmitting device to amplify the second electromagnetic wave signal can be determined according to the power of the first electromagnetic wave signal, that is, the gain coefficient will change as the power of the first electromagnetic wave signal changes. For example, the gain coefficient will decrease as the power of the first electromagnetic wave signal increases, or increase as the power of the first electromagnetic wave signal decreases. Or the gain coefficient is preset, or flexibly variable. This application does not limit this.

[0109] It can be understood that the second electromagnetic wave signal being a partial signal of the first electromagnetic wave signal can be understood as the energy of the second electromagnetic wave signal being less than the energy of the first electromagnetic wave signal.

[0110] Optionally, the transmitting device may also determine a gain coefficient according to a fourth electromagnetic wave signal, which is separated from the first electromagnetic wave signal. Specifically, the transmitting device may amplify the power of the second electromagnetic wave signal according to the gain coefficient to obtain the third electromagnetic wave signal.

[0111] Specifically, the transmitting device may adjust the gain coefficient according to the power of the fourth electromagnetic wave signal. For example, when the power of the fourth electromagnetic wave signal is low (e.g., low level), the gain coefficient is increased; when the power of the fourth electromagnetic wave signal is high (e.g., high level), the gain coefficient is decreased. For example, the transmitting device may preset a preset power threshold, and determine whether the fourth electromagnetic wave signal is high level or low level according to the relationship with the preset power threshold. In this way, the transmitting device can adjust the power of the third electromagnetic wave signal through the gain coefficient so that the power of the third electromagnetic wave signal can reach a stable power range, which helps to improve the charging performance of wireless charging.

[0112] It can be understood that the fourth electromagnetic wave signal may be a partial signal of the first electromagnetic wave signal, where the fourth electromagnetic wave signal is different from the second electromagnetic wave signal. In other words, the first electromagnetic wave signal may be separated into a second electromagnetic wave signal and a fourth electromagnetic wave signal. The energy distribution between the second electromagnetic wave signal and the fourth electromagnetic wave signal may be equal or unequal, which is not limited in this application. For example, the signal energy of the second electromagnetic wave signal may be 80% of the signal energy of the first electromagnetic wave signal.

[0113] It can also be understood that the "separation" of the first electromagnetic wave signal into the second electromagnetic wave signal and the fourth electromagnetic wave signal can also be understood as "splitting", "decomposing" or "extracting". For example, the first electromagnetic wave signal may be obtained by power or energy distribution through a power divider to obtain the second electromagnetic wave signal and the fourth electromagnetic wave signal, or the power or energy may be electromagnetically coupled through a coupler to obtain the second electromagnetic wave signal and the fourth electromagnetic wave signal.

[0114] It can also be understood that other signals may also be separated from the first electromagnetic wave signal and input into the processing module, and the processing module may perform signal processing, such as extracting commands or data.

[0115] It can also be understood that the determination of the high and low levels of the fourth electromagnetic wave signal can be achieved through a preset level threshold. For example, when the level of the fourth electromagnetic wave signal is higher than the preset level threshold, the fourth electromagnetic wave signal is a high level; when the level of the fourth electromagnetic wave signal is lower than the preset level threshold, the fourth electromagnetic wave signal is a low level. Alternatively, in the embodiments of the present application, the transmitting end device can set the corresponding relationship between multiple level intervals and gain coefficients, so that the transmitting end device can determine the corresponding gain coefficient according to the level interval to which the level of the fourth electromagnetic wave signal belongs.

[0116] 203. The transmitting end device sends the third electromagnetic wave signal to the wireless charging device, and the third electromagnetic wave signal is used to charge the wireless charging device. Correspondingly, the wireless charging device receives the third electromagnetic wave signal sent by the transmitting end device.

[0117] Optionally, the beam direction of the third electromagnetic wave signal is opposite to the beam direction of the first electromagnetic wave signal.

[0118] Specifically, the wireless charging device sending the start signal (for example, the start signal can be the first electromagnetic wave signal) to the transmitting end device can be sent using an omnidirectional beam or a wide beam, and perhaps only the start signal using a partial beam can be received by the transmitting end device. Or, the transmitting end device sends the start signal using a full beam or a wide beam, and only the start signal of a partial beam can be received by the wireless communication device. In this way, the transmitting end device and the wireless charging device can find each other's positions. The transmitting end device sends the third electromagnetic wave signal to the wireless charging device using a beam opposite to the beam direction of the received first electromagnetic wave signal, which can improve the transmission performance of the electromagnetic wave signal between the transmitting end device and the wireless charging device and can achieve the directivity of energy transmission.

[0119] Optionally, the frequencies of the third electromagnetic wave signal and the first electromagnetic wave signal are different.

[0120] Specifically, the frequency of the third electromagnetic wave signal sent by the transmitting end device can be different from the frequency of the received first electromagnetic wave signal, which can reduce the interference of uplink and downlink signal transmission and further improve the charging performance.

[0121] 204. The wireless charging device separates the third electromagnetic wave signal to obtain a fifth electromagnetic wave signal and a sixth electromagnetic wave signal.

[0122] Specifically, the wireless charging device can obtain the fifth electromagnetic wave signal and the sixth electromagnetic wave signal according to the third electromagnetic wave signal. For example, the fifth electromagnetic wave signal and the sixth electromagnetic wave signal can be partial signals of the third electromagnetic wave signal respectively.

[0123] It can be understood that the fifth electromagnetic wave signal is a partial signal of the third electromagnetic wave signal, and it can be considered that the energy of the fifth electromagnetic wave signal is less than that of the third electromagnetic wave signal.

[0124] It can also be understood that the manner in which the third electromagnetic wave signal is separated into the fifth electromagnetic wave signal and the sixth electromagnetic wave signal can be the same as the manner in which the first electromagnetic wave signal is separated into the second electromagnetic wave signal and the fourth electromagnetic wave signal described above. To avoid repetition, it will not be elaborated here.

[0125] 205, the wireless charging device sends the fifth electromagnetic wave signal to the transmitting end device. Correspondingly, the transmitting end device receives the fifth electromagnetic wave signal from the wireless charging device.

[0126] In one embodiment, the transmitting end device can also determine whether to continue charging the wireless charging device according to the signal strength of the fifth electromagnetic wave signal.

[0127] Specifically, the transmitting end device can determine whether to continue charging the wireless charging device according to the magnitude relationship between the signal strength of the fifth electromagnetic wave signal and the first preset signal strength threshold. For example, when the signal strength of the fifth electromagnetic wave signal is less than or equal to the first preset signal strength threshold, charging the wireless charging device is stopped. When the signal strength of the fifth electromagnetic wave signal is greater than the first preset signal strength threshold, charging the wireless charging device continues. That is to say, the transmitting end device can determine whether there is an occlusion between the transmitting end device and the wireless charging device according to the fifth electromagnetic wave signal fed back by the wireless charging device during the wireless charging process, and can avoid the radiation pollution of the electromagnetic wave signal caused by continuously transmitting the electromagnetic wave signal when the occlusion reaches a certain degree. In addition, if the occluding object is a human body, the embodiments of the present application can reduce the radiation hazard to the human body.

[0128] It can be understood that after the transmitting end device stops charging the wireless charging device, for example, after stopping sending a charging signal (such as the fifth electromagnetic wave signal) to the wireless charging device, it can also re-initiate the establishment of a charging connection with the wireless charging device, or find another transmitting end device to charge the wireless charging device. The present application does not limit this.

[0129] In another embodiment, the transmitting end device can also determine whether to continue charging the wireless charging device according to the magnitude relationship between the difference between the signal strength of the fifth electromagnetic wave signal and the signal strength of the first electromagnetic wave signal and the second preset signal strength threshold.

[0130] Specifically, the transmitting device can determine whether to continue charging the wireless charging device based on the relationship between the difference between the signal strength of the currently received electromagnetic wave signal and the signal strength of the previous electromagnetic wave signal and a second preset signal strength threshold. For example, when the difference between the signal strength of the fifth electromagnetic wave signal and the signal strength of the first electromagnetic wave signal is less than or equal to the second preset signal strength threshold, the transmitting device stops charging the wireless charging device. When the difference between the signal strength of the fifth electromagnetic wave signal and the signal strength of the first electromagnetic wave signal is greater than the second preset signal strength threshold, the transmitting device continues to charge the wireless charging device. That is to say, the transmitting device can determine whether there is an obstruction between the transmitting device and the wireless charging device based on the fifth electromagnetic wave signal and the first electromagnetic wave signal fed back by the wireless charging device during the wireless charging process, and can avoid the radiation pollution of the electromagnetic wave signal caused by continuously transmitting the electromagnetic wave signal when the obstruction reaches a certain degree. In addition, if the obstruction is a human body, the embodiments of the present application can reduce the radiation hazard to the human body.

[0131] It should be noted that the first electromagnetic wave signal can be the electromagnetic wave signal fed back by the wireless charging device to the transmitting device during the previous charging.

[0132] 206, the wireless charging device charges according to the six electromagnetic wave signals.

[0133] Specifically, in the embodiments of the present application, the charging process between the transmitting device and the wireless charging device can form a cyclic process. That is, the transmitting device sends an electromagnetic wave signal to the wireless charging device for charging. The wireless charging device uses a part of the electromagnetic wave signal for charging and another part of the electromagnetic wave signal for feeding back to the transmitting device for amplification, and then uses the amplified electromagnetic wave signal to charge the wireless charging device. In this way, the transmitting device and the wireless charging device can reach a stable power range for wireless charging, thereby improving the charging performance.

[0134] In addition, assume that the ratio of the third electromagnetic wave signal to the first electromagnetic wave signal is t, the power amplification factor of the transmitting device is A, due to the path loss between the transmitting device and the wireless charging device, the ratio of the third electromagnetic wave signal reaching the wireless charging device to the third electromagnetic wave signal emitted from the transmitting device is c1, the ratio of the fifth electromagnetic wave signal to the received third electromagnetic wave signal is r, and the ratio of the fifth electromagnetic wave signal received by the transmitting device to the fifth electromagnetic wave signal emitted from the wireless charging device is c2. Thus, the round-trip gain between the transmitting device and the wireless charging device is Atrc1c2. Therefore, Atrc1c2 > 1 can achieve signal power amplification during the round trip. If there is an obstruction between the transmitting device and the wireless charging device, it will cause a significant increase in channel loss, that is, the values of c1 and c2 will decrease significantly. That is to say, in the embodiments of the present application, when there is an obstruction between the transmitting device and the wireless charging device, the signal power may decrease during the round trip until it is interrupted. That is, the embodiments of the present application can respond promptly to abnormal events such as obstructions, and can cut off signal transmission within the time order of ns, reducing the radiation pollution of electromagnetic wave signals caused by the wireless charging device emitting electromagnetic wave signals. In addition, if the obstruction is a human body, the embodiments of the present application can reduce the radiation hazard to the human body.

[0135] It can be understood that the "separation" of the third electromagnetic wave signal into the fifth electromagnetic wave signal and the sixth electromagnetic wave signal can also be understood as "splitting", "decomposing" or "extracting". For example, the third electromagnetic wave signal can be obtained by power or energy distribution through a power divider to obtain the fifth electromagnetic wave signal and the sixth electromagnetic wave signal, or by electromagnetic coupling of power or energy through a coupler to obtain the fifth electromagnetic wave signal and the sixth electromagnetic wave signal.

[0136] It can also be understood that other signals can be separated from the third electromagnetic wave signal and input into the processing module, and the processing module can perform signal processing, for example, extracting commands or data.

[0137] Optionally, when the wireless charging device does not need to continue charging (for example, when charging is completed), it sends a charging end indication to the transmitting device.

[0138] Specifically, if the transmitting device receives a charging end indication from the wireless charging device, the transmitting device stops sending a charging signal to the wireless charging device. This avoids radiation pollution caused by the transmitting device still sending a charging signal when the wireless charging device does not need to be charged.

[0139] In one embodiment, before the transmitting end device and the wireless charging device establish a charging connection, for example, before step 201, the wireless charging device may send a charging connection request to the transmitting end device, and the charging connection request includes charging power requirement information of the wireless charging device. The transmitting end device determines whether it can charge the wireless charging device according to the charging power requirement information, and indicates whether it can charge the wireless charging device by sending a charging connection response message to the wireless charging device.

[0140] Specifically, the wireless charging device may actively send a charging connection request and carry the charging power requirement information indicating the required power. The transmitting end device receives the charging connection request, determines whether it can meet the power requirement according to the charging power requirement information in the charging connection request, and informs the wireless charging device of the result through a charging connection response message. For example, if the transmitting end device determines that it cannot charge the wireless charging device, the charging connection response message indicates that it cannot charge the wireless charging device. When the wireless charging device receives the charging connection response message indicating that it cannot charge the wireless charging device, it may also reselect the transmitting end device or perform other operations, etc. If the transmitting end device determines that it can charge the wireless charging device, the charging connection response message indicates that it can charge the wireless charging device, and thus the charging connection can be established between the transmitting end device and the wireless charging device.

[0141] It can be understood that the period before the transmitting end device and the wireless charging device establish a charging connection can be referred to as the "preparation stage".

[0142] Optionally, when the charging connection response message indicates that the transmitting end device cannot charge the wireless charging device, the charging connection response message further includes a delay duration for re - establishing the charging connection. Thus, when the delay duration arrives, the wireless charging device can resend the charging connection request to the transmitting end device.

[0143] Optionally, before the wireless charging device can send a charging connection request to the transmitting end device, the wireless charging device may also receive charging broadcast information from the transmitting end device, and the charging broadcast information is used to indicate that the transmitting end device has charging ability.

[0144] Specifically, the charging broadcast information may include the identifier of the wireless charging device. That is to say, the transmitting end device is used to trigger the wireless charging device to initiate a charging connection request. This avoids the wireless charging device sending a charging connection request to a transmitting end device without charging ability, which helps to reduce the time delay for establishing the charging connection.

[0145] In another embodiment, before the transmitting device and the wireless charging device establish a charging connection, for example, before step 201, the wireless charging device may also receive charging broadcast information from the transmitting device, and the charging broadcast information includes the charging capability of the transmitting device. When the charging capability of the transmitting device meets the power requirement of the wireless charging device, the wireless charging device sends a charging connection request to the transmitting device.

[0146] Specifically, the transmitting device may actively send the charging broadcast information, and the wireless charging device determines whether it can meet the power requirement of the wireless charging device according to the charging capability included in the received charging broadcast information. If the charging capability of the transmitting device meets the power requirement of the wireless charging device, the wireless charging device sends a charging connection request to the transmitting device, and when the transmitting device receives the charging connection request, it charges the wireless charging device (for example, sends the third electromagnetic wave signal). If the charging capability of the transmitting device does not meet the power requirement of the wireless charging device, the wireless charging device may not send the charging connection request to the transmitting device.

[0147] It can be understood that the transmitting device may continuously send the charging broadcast information or send the charging broadcast information periodically, and the present application does not limit this.

[0148] It can also be understood that at the initial running moment of the communication system, the transmitting device may generate an electromagnetic wave signal by itself and amplify the electromagnetic wave signal.

[0149] Optionally, the charging broadcast information may further include an identifier of the transmitting device.

[0150] Each embodiment described herein may be an independent solution or may be combined according to the internal logic, and these solutions all fall within the protection scope of the present application.

[0151] It can be understood that in the above method embodiments, the methods and operations implemented by the transmitting device may also be implemented by components (such as chips or circuits) available for the transmitting device. The methods and operations implemented by the wireless charging device may also be implemented by components (such as chips or circuits) available for the wireless charging device.

[0152] The above mainly introduced the solution provided by the embodiments of the present application from various interaction perspectives. It can be understood that each network element, such as a transmitting device or a wireless charging device, includes corresponding hardware structures and / or software modules for implementing the above functions in order to achieve the above functions. Those skilled in the art should be able to realize that, in combination with the units and algorithm steps of the examples described in the embodiments disclosed herein, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed in the way of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the present application.

[0153] Embodiments of the present application can divide the functional modules of the transmitting device or the wireless charging device according to the above method examples. For example, each functional module can be divided corresponding to each function, or two or more functions can be integrated into one processing module. The above integrated module can be implemented in the form of hardware or in the form of a software functional module. It should be noted that the division of modules in the embodiments of the present application is illustrative, only a logical function division, and there can be other division methods in actual implementation. The following takes the example of dividing each functional module corresponding to each function for illustration.

[0154] It should be understood that the specific examples in the embodiments of the present application are only to help those skilled in the art better understand the embodiments of the present application, rather than limiting the scope of the embodiments of the present application.

[0155] It should be understood that in various embodiments of the present application, the magnitudes of the serial numbers of the above processes do not mean the order of execution is prior or subsequent. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

[0156] Above, Figure 2 The method provided by the embodiments of the present application has been described in detail. Next, in combination with Figures 3 to 9 The device provided by the embodiments of the present application will be described in detail. It should be understood that the description of the device embodiments corresponds to the description of the method embodiments. Therefore, the content not described in detail can refer to the above method embodiments. For the sake of brevity, it will not be repeated here.

[0157] Figure 3 A schematic block diagram of a transmitting device 300 for wireless charging according to an embodiment of the present application is shown.

[0158] It should be understood that the transmitting device 300 can correspond to Figure 1 each of the transmitting devices shown or the chips within the transmitting device, and Figure 2The transmitting-end device in the illustrated embodiment or the chip within the transmitting-end device may have Figure 2 any function of the transmitting-end device in the illustrated method embodiment. The transmitting-end device 300 includes a transceiver antenna 310 and a power amplification module 320.

[0159] The transceiver antenna 310 is configured to receive a first electromagnetic wave signal from a wireless charging device and forward all or part of the first electromagnetic wave signal to the power amplification module;

[0160] The power amplification module 320 is configured to amplify all or part of the first electromagnetic wave signal to obtain a third electromagnetic wave signal and send the third electromagnetic wave signal to the transceiver antenna;

[0161] The transceiver antenna 310 is further configured to send the third electromagnetic wave signal to the wireless charging device, and the third electromagnetic wave signal is used to charge the wireless charging device.

[0162] It can be understood that the transceiver antenna 310 may be a direction-reversal antenna. The direction-reversal antenna can be used to make the beam direction of the transmitted beam of the third radio wave signal opposite to the beam direction of the received beam of the first electromagnetic wave signal.

[0163] Optionally, the transmitting-end device 300 further includes a power distribution module 330 and a gain control module 340. The power distribution module 330 is configured to separate the first electromagnetic wave signal to obtain a second electromagnetic wave signal and a fourth electromagnetic wave signal and send the fourth electromagnetic wave signal to the gain control module; the gain control module 340 is configured to determine a gain coefficient according to the fourth electromagnetic wave signal and send the gain coefficient to the power amplification module; the power amplification module 320 is configured to amplify all or part of the first electromagnetic wave signal to obtain a third electromagnetic wave signal and send the third electromagnetic wave signal to the transceiver antenna. Specifically, the power amplification module 320 is configured to amplify the second electromagnetic wave signal according to the gain coefficient to obtain the third electromagnetic wave signal and send the third electromagnetic wave signal to the transceiver antenna.

[0164] In one example, the power distribution module 330 may be a coupler.

[0165] In another example, the power distribution module 340 may be a power divider.

[0166] It can be understood that the energies of the two or more electromagnetic wave signals obtained after the power divider divides the electromagnetic wave signal can be equal. The energies of the two or more electromagnetic wave signals obtained by the coupler dividing the electromagnetic wave signal are usually not equal. For example, among the two electromagnetic wave signals obtained by the electromagnetic coupling method of the coupler, the energy of one of the electromagnetic wave signals is much smaller than the energy of the other electromagnetic wave signal.

[0167] Optionally, the transceiver antenna 310 is further configured to receive a fifth electromagnetic wave signal from the wireless charging device, where the fifth electromagnetic wave signal is separated from the third electromagnetic wave signal by the wireless charging device; the transmitting end device 300 further includes a processing module 350, and the processing module is configured to stop charging the wireless charging device when the signal strength of the fifth electromagnetic wave signal is less than or equal to a preset value.

[0168] It can be understood that the processing module 350 can also be used to extract signaling or data, etc., and the present application does not limit this.

[0169] Optionally, the transceiver antenna 310 is further configured to receive a charging connection request from the wireless charging device, where the charging connection request includes charging power demand information of the wireless charging device; the transmitting end device 300 further includes a processing module 350, and the processing module 350 is configured to determine whether it can charge the wireless charging device according to the charging power demand information; the transceiver antenna 310 is further configured to send a charging connection response message to the wireless charging device, and the charging connection response message is used to indicate whether it can charge the wireless charging device.

[0170] Optionally, when the charging connection response message indicates that it cannot charge the wireless charging device, the charging connection response message further includes a delay duration for re - establishing a charging connection.

[0171] Optionally, the transceiver antenna 310 is further configured to send charging broadcast information, where the charging broadcast information includes the charging ability of the transmitting end device; the transceiver antenna 310 is further configured to receive a charging connection request from the wireless charging device, and the charging connection request is used to request charging for the wireless charging device.

[0172] In one embodiment, the transceiver antenna includes a Van Atta antenna array.

[0173] Specifically, the transceiver antenna is used to realize beam inversion of the transmitted signal and the received signal. Among them, beam inversion can also be realized by phase inversion of the transmitted signal and the received signal. In this way, the transceiver antenna can be a Van Atta antenna array. As Figure 4As shown, the Van Atta antenna array is usually a linear array with an even number of array elements. There is the same signal delay in the connections between the corresponding antenna array elements, and the same delay between adjacent antenna array elements, thus causing the same phase difference. For example, assume that when receiving, the received signal phases of antenna 1a, antenna 2a, … antenna Na, antenna Nb, … antenna 2b, and antenna 1b are respectively And the connection delay phase is all α. Then when transmitting, the transmitted signal phases of antenna 1a, antenna 2a, … antenna Na, antenna Nb, … antenna 2b, and antenna 1b are respectively α + θ (for example, the signal transmitted by antenna 1a comes from the received signal of antenna 1b, so its phase is the received signal phase of antenna 1b plus the connection delay phase). In this way, the phase difference between adjacent antenna array elements is Thus, the transmission of reverse signals can be achieved.

[0174] In another embodiment, the transceiver antenna includes a plurality of antenna array elements, and each antenna array element in the plurality of antenna array elements includes an antenna, one or more filters, and one or more mixers.

[0175] It can be understood that the transceiver antenna is a mixer antenna array.

[0176] In one example, each antenna array element includes an antenna, a filter, and a mixer.

[0177] Optionally, the frequency of the first input signal of the mixer is twice the frequency of the second input signal. The second input signal is the output signal after the input signal of the transceiver antenna passes through the antenna. The output signal of the mixer is the input signal of the filter, and the filter is used to filter out the frequency that is three times the frequency of the second input signal.

[0178] Specifically, as Figure 5 shown, the input signal of the i-th antenna array element in the plurality of antenna array elements is i = 1, …, n. The input signal can be used as the second input signal of the mixer after passing through the antenna. In addition, the mixer has another input signal (hereinafter referred to as the first input signal), and the first input signal can be cos(4πft + θ). In this way, the signal output by the mixer after mixing the first input signal and the second input signal is After filtering out the third-harmonic frequency component through low-pass or band-pass filtering, it becomes The filter outputs the signal to the antenna for transmission, thus achieving phase inversion, that is, achieving opposite beam directions for signal transmission.

[0179] It can be understood that the antenna in the transceiver antenna can be implemented by a single physical unit for signal transmission or reception, or can be implemented by two physical units for signal transmission or reception respectively.

[0180] In another example, each antenna element includes an antenna, a plurality of filters, and a plurality of mixers.

[0181] Optionally, when the transceiver antenna includes an antenna, two filters, and two mixers, the frequency of the first input signal of the first mixer among the two mixers is the sum of the preset frequency and the frequency of the second input signal, the second input signal is the output signal after the input signal of the transceiver antenna passes through the antenna, the output signal of the first mixer is the input signal of the first filter among the two filters, the output signal of the first filter is the third input signal of the second mixer among the two mixers, the frequency of the fourth input signal of the second mixer is the difference between the frequency of the second input signal and the preset frequency, the output signal of the second mixer is the input signal of the second filter among the two filters, the first filter is used to filter out the frequency which is the sum of the preset frequency and twice the frequency of the second input signal, and the second filter is used to filter out the frequency which is the difference between the frequency of the second input signal and twice the preset frequency.

[0182] Specifically, each antenna element can also perform double mixing. For example, as Figure 6 shown, taking a certain antenna element as an example for illustration. The second input signal of mixer 1 is The first input signal is cos(2πft + 2πf i t + θ1), where i = 1,..., n. The signal after mixing the first input signal and the second input signal is After passing through filter 1 to filter out the (2f + f i ) frequency component and become The signal Passes through mixer 2 again. The other input signal of mixer 2 is cos(2πft - 2πf i t + θ2). In this way, the signal obtained after mixing by mixer 2 is After passing the output signal of mixer 2 through filter 2 to filter out the (f - 2f i ) frequency component and become In this way, phase inversion is achieved, thus realizing the reverse transmission signal.

[0183] It can be understood that the value of the f i can be less than f, which helps to reduce the difficulty of generating the first input signal.

[0184] Optionally, when the transceiver antenna includes an antenna, a filter, and a mixer, the frequency of the first input signal of the mixer is twice the sum of the frequency of the second input signal and a preset frequency. The second input signal is the output signal of the transceiver antenna after passing through the antenna. The filter is used to filter out the frequency that is the sum of three times the frequency of the second input signal and twice the preset frequency.

[0185] Specifically, the transceiver antenna can also be used to set the frequency of the output signal to be different from the frequency of the input signal, thereby avoiding interference between the uplink and downlink signals. For example, as Figure 7 shown, taking the i-th element in the transceiver antenna as an example for illustration. The input signal of the i-th element is where i = 1, …, n. This signal is output to the mixer after passing through the antenna. The other input signal of the mixer is cos[4π(f + Δf)t + θ]. After mixing by the mixer in this way, we can obtain After passing through the filter to filter out the third harmonic frequency component, it becomes Thereby, phase inversion is achieved, and the frequency of the output signal of the transceiver antenna is different from the frequency of the input signal (i.e., 2Δf is increased).

[0186] It should be noted that in the Figure 7 shown scenario, the first input signal of the mixer in the transceiver antenna of the wireless charging device can be cos[4πft + θ], or cos[4π(f + Δf)t + θ]. When the first input signal of the mixer in the transceiver antenna of the wireless charging device can be cos[4π(f - Δf)t + θ], the frequency of the first input signal of the transmitting device is increased by 2△f, and the frequency of the first input signal of the wireless charging device is decreased by 2△f. If it is considered that the higher the frequency, the smaller the volume of the antenna array can be, then the transmitting device can use a lower frequency, and the wireless charging device can use a higher frequency, so that the volume of the wireless charging device is more compact.

[0187] It can be understood that the value of the above Δf can be a positive number or a negative number.

[0188] Optionally, the power distribution module 330 is arranged between the antenna feed point of the antenna and the mixer.

[0189] Specifically, as Figure 8 shown, the connection position of the power distribution module and the transceiver antenna can be arranged at a position close to the antenna feed point of the antenna, so as to reduce energy loss.

[0190] Optionally, the power amplification module includes one or more power amplifiers.

[0191] Specifically, the power amplification module can be implemented by one or more power amplifiers. For example, multiple power amplifiers can be connected in series to achieve multi-stage amplification, thereby providing greater gain. Or multiple power amplifiers are connected in parallel, which can improve linearity and support a larger range of gain adjustment.

[0192] Optionally, the power distribution module includes a coupler or a power divider.

[0193] Specifically, when the power distribution module is implemented by a coupler, wires with electromagnetic coupling effects can be placed near the transmission line, and the function of power distribution between the main transmission line and the coupled wire line can be achieved. Multiple couplings can achieve multi-way power distribution.

[0194] It can be understood that Figure 3 only a simplified design of the transmitting end device is shown. In practical applications, the transmitting end device may also separately include other necessary components, including but not limited to any number of transceiver antennas, processors, power dividers, couplers, power amplifiers, memories, etc., and all terminals that can implement the present application are within the protection scope of the present application.

[0195] The embodiment of the present application also provides a transmitting end device, which can be a terminal or a circuit. The transmitting end device can be used to perform the actions executed by the transmitting end device in the above method embodiment.

[0196] Figure 9 Fig. shows a schematic block diagram of a wireless charging device 900 according to an embodiment of the present application.

[0197] It should be understood that the wireless charging device 900 can correspond to Figure 1 each of the wireless charging devices shown or the chips in the wireless charging device, and Figure 2 the wireless charging devices or the chips in the wireless charging device in the embodiments shown can have Figure 2 any functions of the wireless charging device in the method embodiments shown. The wireless charging device 900 includes a transceiver antenna 910, a power distribution module 920, and a charging module 930.

[0198] The transceiver antenna 910 is configured to receive a third electromagnetic wave signal from the transmitting end device and forward the third electromagnetic wave signal to the power distribution module;

[0199] The power distribution module 920 is configured to separate the third electromagnetic wave signal to obtain a fifth electromagnetic wave signal and a sixth electromagnetic wave signal, forward the fifth electromagnetic wave signal to the transceiver antenna, and forward the sixth electromagnetic wave signal to the charging module;

[0200] The transceiver antenna 910 is further configured to send the fifth electromagnetic wave signal to the transmitting device;

[0201] The charging module 930 is configured to perform charging according to the sixth electromagnetic wave signal.

[0202] Optionally, the transceiver antenna 910 is further configured to send a charging connection request to the transmitting device, where the charging connection request includes the charging power demand information of the wireless charging device; the transceiver antenna 910 is further configured to receive a charging connection response message from the transmitting device, and the charging connection response message is used to indicate whether charging can be performed for the wireless charging device.

[0203] Optionally, in the case where the charging connection response message indicates that charging cannot be performed for the wireless charging device, the charging connection response message further includes a delay duration for re - establishing a charging connection. When the delay duration arrives, the transceiver antenna is further configured to re - send the charging connection request to the transmitting device.

[0204] Optionally, the transceiver antenna 910 is further configured to receive charging broadcast information, where the charging broadcast information includes the charging capability of the transmitting device; the transceiver antenna 910 is further configured to send a charging connection request to the transmitting device when the charging capability of the transmitting device meets the power demand of the wireless charging device, and the charging connection request is used to request charging for the wireless charging device.

[0205] Optionally, the transceiver antenna 910 includes a Van Atta antenna array.

[0206] Optionally, the transceiver antenna includes a plurality of antenna elements, and each antenna element in the plurality of antenna elements includes an antenna, one or more filters, and one or more mixers.

[0207] Optionally, the power distribution module is disposed between the antenna feed point of the antenna and the mixer.

[0208] Optionally, in the case where each antenna element includes an antenna, one filter, and one mixer, the frequency of the first input signal of the mixer is twice the frequency of the second input signal, the second input signal is the output signal of the input signal of the transceiver antenna after passing through the antenna, the output signal of the mixer is the input signal of the filter, and the filter is used to filter out a frequency that is three times the frequency of the second input signal.

[0209] Optionally, in the case where each antenna element includes an antenna, two filters, and two mixers, the frequency of the first input signal of the first mixer among the two mixers is the sum of a preset frequency and the frequency of a second input signal, the second input signal being the output signal of the antenna, the output signal of the first mixer being the input signal of the first filter among the two filters, the output signal of the first filter being the third input signal of the second mixer among the two mixers, the frequency of the fourth input signal of the second mixer being the difference between the frequency of the second input signal and the preset frequency, the output signal of the second mixer being the input signal of the second filter among the two filters, the first filter being configured to filter out a frequency that is the sum of the preset frequency and twice the frequency of the second input signal, and the second filter being configured to filter out a frequency that is the difference between the frequency of the second input signal and twice the preset frequency.

[0210] Optionally, in the case where each antenna element includes an antenna, one filter, and one mixer, the frequency of the first input signal of the mixer is twice the difference between the frequency of a second input signal and a preset frequency, the second input signal being the output signal of the antenna, and the filter being configured to filter out a frequency that is the sum of three times the frequency of the second input signal and twice the preset frequency.

[0211] Optionally, the power distribution module includes a coupler or a power divider.

[0212] It can be understood that Figure 9 only a simplified design of the wireless charging device is shown. In practical applications, the wireless charging device may further include other necessary elements respectively, including but not limited to any number of transceiver antennas, processors, power dividers, memories, etc., and all terminals that can implement the present application are within the protection scope of the present application.

[0213] An embodiment of the present application further provides a wireless charging device, which may be a terminal or a circuit. The transmitting end device may be used to perform the actions performed by the transmitting end device in the above method embodiment.

[0214] In this application, "at least one" means one or more, and "a plurality" means two or more. "And / or" describes the relationship between associated objects and indicates that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, or B exists alone, where A and B can be singular or plural. The character " / " generally indicates that the associated objects before and after are in an "or" relationship. "At least one of the following" or a similar expression refers to any combination of these items, including any combination of single items or plural items. For example, at least one of a, b, or c can represent: a, b, c, a - b, a - c, b - c, or a - b - c, where a, b, and c can be single or multiple.

[0215] It should be understood that the "one embodiment" or "an embodiment" mentioned throughout the specification means that the specific features, structures, or characteristics related to the embodiment are included in at least one embodiment of the present invention. Therefore, the "in one embodiment" or "in an embodiment" that appears throughout the specification does not necessarily refer to the same embodiment. In addition, these specific features, structures, or characteristics can be combined in one or more embodiments in any suitable manner. It should be understood that in various embodiments of the present invention, the magnitude of the serial numbers of the above processes does not mean the order of execution, and the execution order of each process should be determined according to its function and internal logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.

[0216] The terms "component", "module", "system", etc. used in this specification are used to represent computer-related entities, hardware, firmware, combinations of hardware and software, software, or software in execution. For example, a component can be, but is not limited to, a process running on a processor, a processor, an object, an executable file, an execution thread, a program, and / or a computer. By way of illustration, both an application running on a computing device and the computing device can be components. One or more components can reside in a process and / or an execution thread, and the components can be located on one computer and / or distributed between 2 or more computers. In addition, these components can be executed from various computer-readable media storing various data structures. The components can communicate, for example, through local and / or remote processes according to signals having one or more data packets (such as data from two components interacting with another component between a local system, a distributed system, and / or a network, such as the Internet interacting with other systems through signals).

[0217] It should also be understood that the first, second, and various numerical numbers involved herein are only for the convenience of description and are not used to limit the scope of the embodiments of this application.

[0218] It should be understood that the term "and / or" in this text is merely a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist simultaneously, and B exists alone. Among them, when A or B exists alone, the quantity of A or B is not limited. Taking the case of A existing alone as an example, it can be understood as having one or more A.

[0219] Those of ordinary skill in the art can realize that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed in a hardware or software manner depends on the specific application and design constraints of the technical solution. Professional technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of this application.

[0220] Those skilled in the art can clearly understand that for the sake of convenience and brevity of description, the specific working processes of the systems, devices, and units described above can refer to the corresponding processes in the foregoing method embodiments and will not be elaborated herein.

[0221] In several embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the units is only a logical function division, and there may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed coupling or direct coupling or communication connection to each other can be through some interfaces, and the indirect coupling or communication connection of the devices or units can be in an electrical, mechanical, or other form.

[0222] The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0223] In addition, the functional units in each embodiment of this application can be integrated into one processing unit, or each unit can exist physically alone, or two or more units can be integrated into one unit.

[0224] When the above-mentioned functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art or a part of this technical solution can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in various embodiments of this application. The aforementioned storage medium includes: various media such as USB flash drives, mobile hard disks, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical discs that can store program codes.

[0225] As described above, the above are only specific implementation manners of this application, but the protection scope of this application is not limited thereto. Any person skilled in the art within the technical scope disclosed by this application can easily think of changes or substitutions, which should all be covered by the protection scope of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims

1. A method for wireless charging, characterized in that, Including: The transmitting-end device receives a first electromagnetic wave signal from a wireless charging device; The transmitting-end device amplifies all or part of the first electromagnetic wave signal to obtain a third electromagnetic wave signal; The transmitting-end device sends the third electromagnetic wave signal to the wireless charging device, and the third electromagnetic wave signal is used to charge the wireless charging device; The transmitting-end device receives a fifth electromagnetic wave signal from the wireless charging device, and the fifth electromagnetic wave signal is separated from the third electromagnetic wave signal by the wireless charging device; When the signal strength of the fifth electromagnetic wave signal is less than or equal to a preset value, the transmitting-end device stops charging the wireless charging device.

2. The method according to claim 1, characterized in that, The transmitting-end device amplifying part of the first electromagnetic wave signal to obtain a third electromagnetic wave signal includes: Separating the first electromagnetic wave to obtain a second electromagnetic wave signal and a fourth electromagnetic wave signal; The transmitting-end device determines a gain coefficient according to the fourth electromagnetic wave signal; The transmitting-end device amplifies the second electromagnetic wave signal according to the gain coefficient to obtain the third electromagnetic wave signal.

3. The method according to claim 1 or 2, characterized in that, The method further includes: The transmitting-end device receives a charging connection request from the wireless charging device, and the charging connection request includes charging power demand information of the wireless charging device; The transmitting-end device determines whether it can charge the wireless charging device according to the charging power demand information; The transmitting-end device sends a charging connection response message to the wireless charging device, and the charging connection response message is used to indicate whether it can charge the wireless charging device.

4. The method according to claim 3, wherein When the charging connection response message indicates that the transmitting-end device cannot charge the wireless charging device, the charging connection response message further includes a delay duration for re-establishing a charging connection.

5. The method according to any one of claims 1 to 4, characterized in that, The method further includes: The transmitting-end device sends charging broadcast information, and the charging broadcast information includes the charging ability of the transmitting-end device; The transmitting-end device receives a charging connection request from the wireless charging device, and the charging connection request is used to request charging the wireless charging device.

6. A method for wireless charging, characterized in that, Including: The wireless charging device receives a third electromagnetic wave signal from the transmitting-end device; The wireless charging device separates the third electromagnetic wave signal to obtain a fifth electromagnetic wave signal and a sixth electromagnetic wave signal; The wireless charging device sends the fifth electromagnetic wave signal to the transmitting-end device; The wireless charging device charges according to the sixth electromagnetic wave signal; The wireless charging device sends a charging connection request to the transmitting-end device, and the charging connection request includes charging power demand information of the wireless charging device; The wireless charging device receives a charging connection response message from the transmitting-end device, and the charging connection response message is used to indicate whether the transmitting-end device can charge the wireless charging device.

7. The method according to claim 6, characterized in that, In the case that the charging connection response message indicates that the transmitting device cannot charge the wireless charging device, the charging connection response message further includes a delay duration for re - establishing the charging connection, and the method further includes: When the delay duration arrives, the wireless charging device re - sends the charging connection request to the transmitting device.

8. The method according to claim 6, characterized in that, The method further includes: The wireless charging device receives charging broadcast information, and the charging broadcast information includes the charging capability of the transmitting device; In the case that the charging capability of the transmitting device meets the power requirement of the wireless charging device, the wireless charging device sends a charging connection request to the transmitting device, and the charging connection request is used to request charging for the wireless charging device.

9. A transmitting-end device for wireless charging, characterized in that, Including: A transceiver antenna, configured to receive a first electromagnetic wave signal from the wireless charging device and forward all or part of the first electromagnetic wave signal to the power amplification module; The power amplification module is configured to perform power amplification on all or part of the first electromagnetic wave signal to obtain a third electromagnetic wave signal and send the third electromagnetic wave signal to the transceiver antenna; The transceiver antenna is further configured to send the third electromagnetic wave signal to the wireless charging device, and the third electromagnetic wave signal is used to charge the wireless charging device; The transceiver antenna is further configured to receive a fifth electromagnetic wave signal from the wireless charging device, and the fifth electromagnetic wave signal is separated from the third electromagnetic wave signal by the wireless charging device; The transmitting device further includes a processing module, and the processing module is configured to stop charging the wireless charging device when the signal strength of the fifth electromagnetic wave signal is less than or equal to a preset value.

10. The transmitting-end device according to claim 9, characterized in that, The transmitting device further includes a power distribution module and a gain control module, The power distribution module is configured to separate the first electromagnetic wave signal into a second electromagnetic wave signal and a fourth electromagnetic wave signal and send the fourth electromagnetic wave signal to the gain control module; The gain control module is configured to determine a gain coefficient according to the fourth electromagnetic wave signal and send the gain coefficient to the power amplification module; The power amplification module is configured to perform power amplification on all or part of the first electromagnetic wave signal to obtain a third electromagnetic wave signal and send the third electromagnetic wave signal to the transceiver antenna, specifically: The power amplification module is configured to perform power amplification on the second electromagnetic wave signal according to the gain coefficient to obtain the third electromagnetic wave signal and send the third electromagnetic wave signal to the transceiver antenna.

11. The transmitting end device according to claim 9 or 10, characterized in that, The transceiver antenna is further configured to receive a charging connection request from the wireless charging device, and the charging connection request includes the charging power requirement information of the wireless charging device; The transmitting device further includes a processing module, and the processing module is configured to determine whether it can charge the wireless charging device according to the charging power requirement information. The transceiver antenna is further configured to send a charging connection response message to the wireless charging device, where the charging connection response message is used to indicate whether charging can be performed for the wireless charging device.

12. The transmitting-end device according to claim 11, wherein In the case where the charging connection response message indicates that charging cannot be performed for the wireless charging device, the charging connection response message further includes a delay duration for re - establishing the charging connection.

13. The transmitting end device according to any one of claims 9 to 12, characterized in that, The transceiver antenna is further configured to send charging broadcast information, where the charging broadcast information includes the charging capabilities of the transmitting - end device. The transceiver antenna is further configured to receive a charging connection request from the wireless charging device, where the charging connection request is used to request charging for the wireless charging device.

14. A wireless charging device, characterized in that, Comprising: A transceiver antenna, configured to receive a third electromagnetic wave signal from the transmitting - end device and forward the third electromagnetic wave signal to the power distribution module. The power distribution module is configured to separate the third electromagnetic wave signal to obtain a fifth electromagnetic wave signal and a sixth electromagnetic wave signal, forward the fifth electromagnetic wave signal to the transceiver antenna, and forward the sixth electromagnetic wave signal to the charging module. The transceiver antenna is further configured to send the fifth electromagnetic wave signal to the transmitting - end device. The charging module is configured to perform charging according to the sixth electromagnetic wave signal. The transceiver antenna is further configured to send a charging connection request to the transmitting - end device, where the charging connection request includes the charging power demand information of the wireless charging device. The transceiver antenna is further configured to receive a charging connection response message from the transmitting - end device, where the charging connection response message is used to indicate whether charging can be performed for the wireless charging device.

15. The wireless charging device according to claim 14, wherein In the case where the charging connection response message indicates that charging cannot be performed for the wireless charging device, the charging connection response message further includes a delay duration for re - establishing the charging connection. When the delay duration arrives, the transceiver antenna is further configured to re - send the charging connection request to the transmitting - end device.

16. The wireless charging device according to claim 15, characterized in that, The transceiver antenna is further configured to receive charging broadcast information, where the charging broadcast information includes the charging capabilities of the transmitting - end device. The transceiver antenna is further configured to send a charging connection request to the transmitting - end device when the charging capabilities of the transmitting - end device meet the power demand of the wireless charging device, where the charging connection request is used to request charging for the wireless charging device.

17. A wireless charging system, characterized in that, The charging system includes a transmitting - end device and a wireless charging device. The transmitting - end device is configured to receive a first electromagnetic wave signal from the wireless charging device, perform power amplification on all or part of the first electromagnetic wave signal to obtain a third electromagnetic wave signal, and send the third electromagnetic wave signal to the wireless charging device. The wireless charging device is configured to separate the third electromagnetic wave signal to obtain a fifth electromagnetic wave signal and a sixth electromagnetic wave signal, send the fifth electromagnetic wave signal to the transmitting - end device, and perform charging according to the sixth electromagnetic wave signal. The transmitting-end device is further configured to receive a charging connection request from the wireless charging device, where the charging connection request includes charging power demand information of the wireless charging device, and determine whether it can charge the wireless charging device according to the charging power demand information; The wireless charging device is further configured to receive a charging connection response message from the transmitting-end device, where the charging connection response message is used to indicate whether it can charge the wireless charging device.

18. The wireless charging system according to claim 17, wherein The transmitting-end device is further configured to send charging broadcast information, where the charging broadcast information includes the charging capability of the transmitting-end device; The wireless charging device is further configured to send a charging connection request to the transmitting-end device when the charging capability of the transmitting-end device meets the power demand of the wireless charging device, where the charging connection request is used to request charging for the wireless charging device.

Images