Wireless charging device and method thereof, electronic device, and storage medium

Abstract

The present disclosure provides a wireless charging device, which includes a charging module carrier and a plurality of wireless charging modules. The wireless charging module includes a positioning sub-module and a charging sub-module. The charging sub-module includes at least one wireless charging receiving antenna. The positioning sub-module is configured to identify the position of the wireless charging transmitting device. The plurality of wireless charging modules are respectively provided at a plurality of mounting positions of the charging module carrier. After identifying the position of the wireless charging transmitting device, the positioning sub-module is further configured to transmit the position information of each wireless charging receiving antenna to the wireless charging transmitting device. The present disclosure further provides a method for controlling the wireless charging device, an electronic device, and a computer-readable storage medium.

Description

Technical Field

[0001] [Cross - Reference to Related Applications] This disclosure is based on Chinese Patent Application CN202210663259.9, titled "Wireless Charging Device and Its Method, Electronic Device, and Storage Medium", filed on June 13, 2022, and claims the priority of the said patent application. All its disclosure contents are incorporated into this disclosure by reference.

[0002] [Technical Field] This disclosure relates to the field of wireless charging, and particularly to a wireless charging device, a method for controlling the wireless charging device, an electronic device including the wireless charging device, and a computer - readable storage medium.

Background Art

[0003] With the development of micro - electronics technology and communication, wireless charging technology has already been applied to many electronic devices. For example, for a mobile phone terminal, a wireless charging receiving antenna can be installed on the mobile phone terminal, and a wireless charging transmitting device can provide a wireless charging signal to the wireless charging receiving antenna to realize charging the mobile phone terminal. In the current wireless charging technology based on radio - frequency antenna transmission and reception, there is a problem of low charging efficiency.

Summary of the Invention

Problems to be Solved by the Invention

[0004] The purpose of this disclosure is to provide a wireless charging device, a method for controlling the wireless charging device, an electronic device including the wireless charging device, and a computer - readable storage medium.

Means for Solving the Problems

[0005] As a first aspect of the present disclosure, a wireless charging device is provided. The wireless charging device includes a charging module carrier and a plurality of wireless charging modules. The wireless charging module includes a positioning sub-module and a charging sub-module. The charging sub-module includes at least one wireless charging receiving antenna. The positioning sub-module is configured to identify the position of a wireless charging transmitting device. The plurality of wireless charging modules are respectively provided at a plurality of mounting positions of the charging module carrier. After identifying the position of the wireless charging transmitting device, the positioning sub-module is further configured to transmit the position information of each wireless charging receiving antenna to the wireless charging transmitting device.

[0006] As a second aspect of the present disclosure, a method for controlling a wireless charging device is provided. The wireless charging device is the wireless charging device according to the first aspect of the present disclosure. The method includes: determining, by each positioning sub-module, the position information of a wireless charging transmitting device; transmitting, by the positioning sub-module, the position information of the wireless charging receiving antenna in each charging sub-module to the wireless charging transmitting device; and performing beam training on at least one wireless charging receiving antenna so as to realize beam pairing between the corresponding wireless charging receiving antenna and the wireless charging transmitting device.

[0007] As a third aspect of the present disclosure, an electronic device is provided. The electronic device includes a wireless charging device, a processor, and a storage module. The wireless charging device is the wireless charging device according to the first aspect of the present disclosure. A program executable by the processor is stored in the storage module. When the processor calls the executable program, the method according to the second aspect of the present disclosure can be executed.

[0008] As a fourth aspect of the present disclosure, a computer-readable storage medium is provided. The computer-readable storage medium stores an executable program. When the executable program is called, the method described in the second aspect of the present disclosure can be realized.

Brief Description of Drawings

[0009]

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Embodiments for Carrying Out the Invention

[0010] To help those skilled in the art better understand the technical means of the present disclosure, the wireless charging device according to the present disclosure, the method for controlling the wireless charging device, the electronic device including the wireless charging device, and the computer-readable storage medium will be described in detail below with reference to the drawings.

[0011] Examples will be described in more detail below with reference to the drawings. However, the exemplary embodiments may be embodied in different forms and are not limited to the embodiments described in this specification. On the contrary, the purpose of providing these embodiments is to make the present disclosure clear and complete, and enable those skilled in the art to fully understand the scope of the present disclosure.

[0012] Unless there is a contradiction, each embodiment of the present disclosure and each feature in the embodiment can be combined with each other.

[0013] As used in this specification, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0014] The terms used in this specification are only for the purpose of describing specific embodiments and do not limit the present disclosure. As used in this specification, the singular forms "a" and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. Further understood, when the terms "comprising" and / or "manufactured from..." are used in this specification, it specifies the presence of the said features, wholes, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or groups thereof.

[0015] Unless otherwise specifically limited, the meanings of all terms (including technical and scientific terms) used in this specification are the same as those generally understood by those skilled in the art. Further understood, unless clearly limited in this specification, for example, those terms limited to their general dictionaries should be construed to have meanings consistent with their meanings in the context of the related art and the present disclosure, and should not be construed to have ideal or excessive formal meanings.

[0016] As a first aspect of the present disclosure, a wireless charging device is provided. As shown in FIG. 1, the wireless charging device includes a charging module carrier 100 and a plurality of wireless charging modules 200. The wireless charging module 200 includes a positioning sub-module 210 and a charging sub-module 220. The charging sub-module 220 includes at least one wireless charging receiving antenna. The positioning sub-module 210 determines the position of the wireless charging transmitting device 300. The plurality of wireless charging modules 200 are respectively provided at a plurality of mounting positions of the charging module carrier 100, and the positioning sub-module 210 transmits the position information of each charging sub-module 220.

[0017] In the present disclosure, the wireless charging receiving antenna may be a millimeter-wave antenna or other types of antennas, as long as wireless charging can be realized.

[0018] The charging module carrier 100 of the charging device is provided on an electronic device including the charging device. Note that the charging module carrier 100 needs to be manufactured from a non-shielding material. As a preferred embodiment, the charging module carrier 100 may be a part of the rear case of the electronic device.

[0019] Since the plurality of positioning sub-modules 210 are respectively provided at different positions of the charging module carrier 100, each positioning sub-module 210 can communicate with the wireless charging transmitting device 300, and the position of the wireless charging transmitting device 300 can be determined quickly and accurately.

[0020] After determining the position of the wireless power transmission device 300, by transmitting the position information of each charging sub-module 220 to the wireless power transmission device 300, the relative positional relationship between the wireless power transmission device 300 and the wireless power receiving antennas of each charging sub-module 220 can be further determined, and the beam can be trained to realize beam pairing between each wireless power receiving antenna and the wireless power transmission device 300. The wireless charging device according to the present disclosure utilizes a plurality of positioning sub-modules to simultaneously position the wireless power transmission device 300, so that accurate positioning of the wireless power transmission device 300 can be realized. Accordingly, more accurate beam pairing can be realized, and the charging efficiency can be improved.

[0021] As can be seen from the above, by providing the positioning sub-modules 210 located at different positions, the efficiency and accuracy of positioning the wireless power transmission device 300 can be improved, and the efficiency of charging the battery using the wireless charging device can be improved.

[0022] Also, the wireless charging device includes a plurality of charging sub-modules 220. Each charging sub-module 220 can receive the wireless charging signal transmitted from the wireless power transmission device 300 and convert it into electrical energy, thereby further improving the efficiency of charging the battery using the wireless charging device.

[0023] In the present disclosure, the specific type of the charging sub-module 220 is not particularly limited. As a preferred embodiment, different charging sub-modules 220 may be wireless power receiving antennas in different frequency bands, and matching can be performed for the wireless power receiving antennas in different frequency bands.

[0024] The optimal beam pairing angle is related to the orientation of the wireless charging antenna. As a preferred embodiment, the wireless power receiving antennas in a plurality of wireless charging modules have at least two different orientations. That is, the wireless power receiving antennas in the wireless charging device have at least two different orientations.

[0025] For the wireless power transmission devices 300 at different positions, in order for the beam pairing angle between at least some of the wireless power receiving antennas and the wireless power transmission device to be the optimal beam pairing angle or approximate to the optimal beam pairing angle, the wireless power transmission device 300 can obtain relatively high charging efficiency at different positions of the wireless power charging device.

[0026] As described above, the wireless power receiving antenna according to the present disclosure may be a millimeter wave antenna. In the case of a millimeter wave antenna, the antenna size is proportional to the signal wavelength. In the wireless power charging device according to the present disclosure, the plurality of wireless power receiving antennas are not integrally connected and provided, but are distributed dispersedly on the charging module carrier 100, which not only rationally utilizes the space of the electronic device including the wireless power charging device, but also can increase the overall size of the wireless power receiving antenna.

[0027] As described above, the wireless power transmission device transmits millimeter waves. The frequency band range of millimeter waves is wide, and there are also differences in the frequency bands of wireless power transmission devices. For example, there are Ku band, K band, Ka band, etc. At the same time, the C band belonging to Industrial Scientific Medical (ISM) may also be included in the common wireless power charging band range. Accordingly, different wireless power charging antennas of the wireless power charging device can also use different frequency bands, which can improve the adaptability of the wireless power charging device. As shown in FIG. 10, the wireless power receiving antennas in different frequency bands can correspond to the millimeter wave wireless power transmission devices 300 in different frequency bands, effectively improving the flexibility of the wireless power charging device. Moreover, such a setting can operate the wireless power charging device in the environmental scenes of millimeter wave charging devices in different frequency bands, and can charge the electronic device using millimeter wave wireless power charging devices in different frequency bands.

[0028] In the present disclosure, the specific structure of the wireless power receiving antenna is not particularly limited. As a preferred embodiment, the wireless power receiving antenna includes an array formed by arranging a plurality of first antenna array elements. The orientation of the wireless power receiving antenna may be the orientation of the first antenna array elements in the array.

[0029] As a preferred embodiment, the charging sub-module 220 includes a plurality of wireless power receiving antennas. The orientations of the first antenna array elements in the same wireless power receiving antenna are the same, and the orientations of the first antenna array elements in different wireless power receiving antennas are different. For example, in the same charging sub-module, it may include a wireless power receiving antenna facing the first direction (i.e., the first antenna array elements in the wireless power receiving antenna face the first direction), a wireless power receiving antenna facing the second direction (i.e., the first antenna array elements in the wireless power receiving antenna face the second direction), and a wireless power receiving antenna facing the third direction (i.e., the first antenna array elements in the wireless power receiving antenna face the third direction).

[0030] In the present disclosure, the position information of the wireless power receiving antenna is not particularly limited. For example, the position information of the wireless power receiving antenna may include the absolute position information of the wireless power receiving device, or may be the relative position distribution information among a plurality of wireless power receiving antennas. In order to quickly determine the position information of the wireless power receiving antenna, in this embodiment, the position information of the wireless power receiving antenna includes the relative position distribution information among the plurality of wireless power receiving antennas. After transmitting the relative position distribution information among the plurality of wireless power receiving antennas to the wireless power transmitting device 300, it is advantageous for the wireless power transmitting device to achieve rough alignment for all the wireless power receiving antennas.

[0031] When the electronic device provided with the wireless charging device is a display device (for example, a mobile phone, a tablet computer), the direction of the display surface is referred to as the front direction, the direction opposite to the direction of the display surface is referred to as the rear direction (or the directly rear direction), the direction perpendicular to the display surface is referred to as the lateral direction, and the direction between the rear direction and the lateral direction is referred to as the oblique direction (or the oblique rear direction). In such an embodiment, the same charging sub-module may include a wireless charging receiving antenna in the directly rear direction, a wireless charging receiving antenna in the lateral direction, and a wireless charging receiving antenna in the oblique rear direction. When the display device has a frame, the wireless charging device may further include a wireless charging receiving antenna in the front direction.

[0032] As a preferred embodiment, in the wireless charging receiving antenna, the first antenna array elements in the same direction may be arranged as an equally spaced area array (UPA, Uniform Planar Array). That is, the same wireless charging receiving antenna may include a plurality of equally spaced area arrays.

[0033] Wireless charging transmitting devices are usually concentratedly provided in a specific area. For example, a plurality of wireless charging transmitting devices are provided in a certain charging area. In the present disclosure, each wireless charging antenna may be a massive multiple-in multiple-out (massive MIMO) antenna. Therefore, in the wireless charging device according to the present disclosure, the signal energy in space can be concentrated in an extremely narrow beam, accurately directed to a plurality of wireless charging transmitting devices (for example, millimeter-wave wireless charging transmitting devices), and the propagation distance in this direction can be maximized, thereby improving the overall charging efficiency.

[0034] For example, a single wireless charging receiving antenna may be a massive MIMO including 128 first antenna array elements. When performing wireless charging, the beam pattern of the corresponding base station can form eight narrow beams at eight angles facing the wireless charging device, and millimeter-wave wireless charging transmission and reception beam pairs that are very close to each other within the range of -30° to 0° can also be accurately distinguished. In an embodiment including a plurality of charging sub-modules, millimeter-wave wireless charging beam pairs at more azimuth angles can be generated. In an environment where a millimeter-wave intelligent reflecting surface (RIS) is provided, it is more advantageous to realize the alignment of millimeter-wave wireless charging transmission and reception beam pairs, improving the charging efficiency.

[0035] In the present disclosure, the wireless charging antennas provided dispersedly are arranged as multi-directional scanning beams, and since the orientations of the arrays composed of different first antenna array elements are different, even when the electronic device (such as a mobile phone) including the wireless charging device is interfered in a specific direction during the use process, there is still a wireless charging receiving antenna that can perform wireless charging, so it can be guaranteed to the greatest extent that the wireless charging is not interrupted.

[0036] As a preferred embodiment, the arrangement methods of the plurality of first antenna array elements in different charging sub-modules are the same. For example, each charging sub-module may include a wireless charging receiving antenna facing the first direction, a wireless charging receiving antenna facing the second direction, and a wireless charging receiving antenna facing the third direction. When performing beam training, the wireless charging receiving antennas in the same orientation can be trained together to improve the training efficiency.

[0037] In the present disclosure, after the wireless charging receiving antenna receives a charging signal (for example, a millimeter wave signal) transmitted from the wireless charging transmitting device 300, it directly rectifies and equalizes the charging signal to obtain a DC signal. Then, the wireless charging device can charge the converted current to the power supply of the electronic device. In order to facilitate the supply of current to the power supply of the electronic device, preferably, as shown in FIG. 2, the charging sub-module 220 further includes a plurality of first rectifier circuits 222. In the same charging sub-module 220, the plurality of first rectifier circuits 222 correspond one-to-one with a plurality of wireless charging receiving antennas 221, and the first rectifier circuit 222 is electrically connected to the corresponding wireless charging receiving antenna 221. That is, in the wireless charging device, a plurality of first rectifier circuits 222 are connected in parallel.

[0038] In the present disclosure, the specific structure of the first rectifier circuit is not particularly limited. As shown in FIG. 3, the first rectifier circuit 222 may include a low / high bandpass filter 222a, a rectifying diode, and a through filter 222b. In such an embodiment, the wireless charging receiving antenna 221 and the first rectifier circuit 222 are highly integrated. The core device of the first rectifier circuit 222 is a rectifying diode. The low / high bandpass filter 222a reflects the harmonics generated by the rectifying diode, and the through filter 222b allows only DC current to flow.

[0039] Of course, the present disclosure is not limited thereto. The charging signal received by the wireless charging receiving antenna may be reduced to an intermediate frequency and then rectified and equalized to finally form a DC signal. That is, the charging sub-module may further include a frequency reduction unit electrically connected between the wireless charging receiving antenna and the first rectifier circuit, and the frequency reduction unit reduces the charging signal received by the wireless charging receiving antenna to an intermediate frequency.

[0040] In order to further facilitate the charging of the power supply of the electronic device (for example, the battery 600), the wireless charging device further includes a centralized charging management circuit 400 and a plurality of DC aggregation circuits 500.

[0041] The plurality of wireless charging modules 200 correspond one-to-one with the plurality of DC aggregation circuits 500. The input end of the DC aggregation circuit 500 is electrically connected to the first rectification circuit 222 of the corresponding wireless charging module 200, and the output end of the DC aggregation circuit 500 is electrically connected to the input end of the centralized charging management circuit 400.

[0042] The centralized charging management circuit 400 rectifies the received electrical signal and outputs a charging current that meets predetermined conditions.

[0043] The output end of the centralized charging management circuit 400 is electrically connected to the battery 600, and the battery 600 can be charged.

[0044] It should be noted that the function of the DC aggregation circuit 500 is not only to perform DC aggregation. Another important function of the DC aggregation circuit is to perform cooperative equalization on the charging signal (the charging signal is current or voltage) in the wireless charging process, especially in the constant current and constant voltage stages, to ensure the smoothness and stability of the wireless charging process. Specifically, when the wireless charging module 200 includes a millimeter-wave antenna array, the plurality of wireless charging modules 200 form millimeter-wave wireless charging of a multi-area array. In the millimeter-wave wireless charging of the multi-area array, not only is current / voltage fluctuation likely to occur during the beam switching and alignment recovery process, but after the beam switching and alignment recovery, due to signal interruption caused by the position change of the area array or sub-area array of a certain millimeter-wave antenna array, it cannot continue to operate, which also causes current / voltage fluctuation. In such a case, the DC aggregation circuits 500 of the plurality of millimeter-wave antenna arrays can immediately handshake and cooperate with each other to perform complementary distribution of the DC aggregation current / voltage between them, ensuring the stability of the overall charging current and voltage of the centralized charging management circuit 400. For example, when the voltage or current fluctuates due to the non-existence of time division of the millimeter-wave rectification circuit that also serves as a communication function in the DC aggregation circuit 500 of the millimeter-wave antenna array, the millimeter-wave antenna area arrays are sequentially operated and power distribution after millimeter-wave rectification are performed on each other to ensure the stability in the millimeter-wave wireless charging process.

[0045] The steps for the DC aggregation circuit 500 of the millimeter-wave antenna array to specifically achieve current / voltage equalization are as follows.

[0046] In step 1, the current-voltage measurement values of the DC aggregation circuit 500 of each millimeter-wave antenna array are transmitted to each other by their handshake equalization signals, an error range is established, DC aggregation is independently performed within the error range, and the parameter inspection conditions for the error range can be preset. For example, the parameter inspection conditions may include at least one of the control parameters of a radio frequency switch (described below), parameters such as the sudden change in current and voltage of a specific rectifier circuit.

[0047] In step 2, when the current-voltage measurement value of the DC aggregation circuit of a certain array clearly exceeds the error range, based on the error value, the DC aggregation circuits of one or several other arrays immediately establish differential compensation.

[0048] In step 3, when the error value after compensation is controlled within the error range, the existing current-voltage charging mechanism is maintained for the overall charging current or voltage. When the compensation value and the error value still exceed the error range, it is reported to the system processor, and the system processor increases or decreases the overall charging current or charging voltage.

[0049] In the present disclosure, there is no particular limitation on how the positioning sub-module 210 positions the wireless charging transmitter 300. As a preferred embodiment, the positioning sub-module 210 includes a beacon antenna, and the beacon antenna broadcasts a handshake message and receives a handshake success message returned from the wireless charging transmitter 300.

[0050] When the positioning sub-module 210 receives a handshake success message, based on the handshake success message, the position of the wireless charging transmitter 300 can be determined. Typically, in the present disclosure, there are a plurality of millimeter-wave array beacon antennas. When the relative positions of the beacon antennas are determined, the distance and angle of the wireless charging transmitter 300 are calculated based on the coordinated handshake message information of the plurality of beacon antennas, and the position of the wireless charging transmitter 300 is determined. After determining the position of the wireless charging transmitter 300, the positioning sub-module 210 may transmit the position information of each wireless charging receiving antenna to the wireless charging transmitter 300.

[0051] In the present disclosure, the specific structure of the beacon antenna is not particularly limited. As a preferred embodiment, the beacon antenna includes an array formed by arranging a plurality of second antenna array elements. The orientations of the second antenna array elements in the same beacon antenna are the same, and the orientations of the second antenna array elements in different beacon antenna arrays are different.

[0052] To simplify the structure of the wireless charging device, as a preferred embodiment, the number of the beacon antennas does not exceed the number of directions towards which the first antenna array elements in the wireless charging receiving antenna face. That is, each beacon antenna corresponds to at least one wireless charging receiving antenna. For the sake of convenience of description, the wireless charging receiving antenna corresponding to the beacon antenna is referred to as the "target wireless charging receiving antenna". To provide more accurate position information of the wireless charging receiving antenna to the wireless charging transmitter, preferably, the angle between the orientation of the beacon antenna and the orientation of the target wireless charging receiving antenna (i.e., the wireless charging receiving antenna corresponding to the beacon antenna) does not exceed a predetermined angle.

[0053] In the present disclosure, the predetermined angle is not particularly limited. For example, the predetermined angle can be selected from angles between 0 and 45°. As a preferred embodiment, the orientation of the beacon antenna is the same as the orientation of the corresponding wireless charging receiving antenna. In the present disclosure, wireless charging receiving antennas with similar orientations may share the beacon antenna. For example, a wireless charging receiving antenna oriented diagonally backward may share the beacon antenna with a wireless charging receiving antenna oriented horizontally.

[0054] As a preferred embodiment, the number of the beacon antennas is the same as the number of directions towards which the first antenna array elements in the wireless charging receiving antenna face, that is, each first antenna array element in each orientation corresponds to one beacon antenna. When the wireless charging receiving antenna includes first antenna array elements in M types of orientations, the wireless charging device also includes M beacon antennas.

[0055] For example, when the wireless charging device includes a first antenna array element facing the first direction, a first antenna array element facing the second direction, and a first antenna array element facing the third direction, the wireless device may include beacon antennas in three orientations, that is, a beacon antenna facing the first direction, a beacon antenna facing the second direction, and a beacon antenna facing the third direction.

[0056] As another preferred embodiment, the number of the beacon antennas is less than the number of directions towards which the first antenna array elements in the wireless charging receiving antenna face. For example, when the wireless charging receiving antenna includes first antenna array elements in M types of orientations, the wireless charging device includes N beacon antennas, where N < M.

[0057] In the above embodiment, the first antenna array elements with approximate orientations share the same beacon antenna. Taking the example that the electronic device including the wireless charging device is a display device, when the wireless charging device is provided with a first antenna array element facing backward, a first antenna array element facing sideways, and a first antenna array element facing diagonally backward (i.e., M = 3), a beacon antenna facing backward and a beacon antenna facing sideways may be provided (i.e., N = 2), and the first antenna array element facing diagonally backward and the first antenna array element facing sideways share the same beacon antenna.

[0058] In the present disclosure, the specific number of the beacon antennas is not particularly limited. The beacon antenna is in a low power consumption mode, performs position broadcast, can reduce the number of beacon antennas, and can reduce the overall energy consumption of the electronic device including the wireless charging device.

[0059] As a preferred embodiment, the second antenna array elements in the beacon antenna are arranged in the form of an equally spaced linear array (ULA, Uniform Linear Array).

[0060] One beacon antenna may include M second antenna array elements. As shown in FIG. 4, the M second antenna array elements are uniformly distributed in a linear array at an interval d, the signal arrival angle is θ, and the adjacent signal time difference τ can be calculated by the following formula (1). τ = d * sinθ / c (1) c is the electromagnetic wave propagation speed, which is 3 * 10 8 m / s.

[0061] The signal received by each second antenna array element is as shown in formula (2) with reference to the second antenna array element numbered 0 and the signal S m (t) received by the second antenna array element numbered m.

[0062] S m (t) = S 0 (t - m * τ) (2) m is an integer, and m = 0, 1, …, M - 1.

[0063] The signal y(t) received by the linear array at time t is as shown in Equation (3). y(t)=[S 0 (t),···S m (t),···,S M-1 (t)] (3) When receiving a narrowband signal, the signal y(t) received by the linear array at time t is as shown in Equation (4).

[0064] y(t)=w H α(θ)S(t) (4) w H is the beamforming weighting vector, α(θ) is the steering vector at the arrival angle θ.

[0065] Finally, beamforming is realized by M coherent interferences. In the above embodiments, an embodiment in which the beacon antenna includes the second antenna array element and is arranged in a ULA is described. Hereinafter, other forms of beacon antennas will be described. In such an embodiment, in order to improve the signal transmission and reception performance, the beacon antenna includes not only a single dipole array ULA, but also a UPA formed by a cross array of horizontal polarization and vertical polarization. That is, the beacon antenna includes a ULA formed by arranging a plurality of second antenna array elements and an equispaced area array UPA formed by arranging a plurality of second antenna array elements.

[0066] In the present disclosure, the electronic device to which the wireless charging device is applied is not particularly limited. The electronic device may be a mobile communication device having a 5G communication function. Accordingly, the mobile communication device has a millimeter-wave communication antenna 700, and the antenna array element of the millimeter-wave communication antenna 700 has the same structure as the first antenna array element of the wireless charging receiving antenna. Therefore, in order to improve the charging efficiency and simplify the structure of the wireless charging device, preferably, the millimeter-wave communication antenna 700 can be multiplexed as a wireless charging receiving antenna.

[0067] Accordingly, the wireless charging module 220 may further include a second rectifying circuit 223 configured to selectively electrically connect the millimeter-wave communication antenna 700 to one of a communication circuit corresponding to the millimeter-wave communication antenna 700 and the second rectifying circuit 223. When the millimeter-wave communication antenna 700 is conductive to the communication circuit 710, the millimeter-wave communication antenna 700 can realize the data transmission function of the mobile communication terminal. When the millimeter-wave communication antenna 700 is conductive to the second rectifying circuit 223, the millimeter-wave communication antenna 700 is used as a wireless charging antenna.

[0068] As a preferred embodiment, the millimeter-wave communication antenna 700 may be time-division multiplexed as a wireless charging receiving antenna.

[0069] In the present disclosure, there is no particular limitation on how to implement the function switching of the millimeter-wave communication antenna. As a preferred embodiment, the wireless charging module may further include a radio frequency switch 230. The first end of the radio frequency switch 230 is electrically connected to the millimeter-wave communication antenna, the second end of the radio frequency switch 230 is electrically connected to the second rectification circuit 223, and the third end of the radio frequency switch 230 is electrically connected to the millimeter-wave communication circuit. When the control end of the radio frequency switch 230 receives a first control signal, the first end of the radio frequency switch 230 conducts with the second end of the radio frequency switch 230, whereby the millimeter-wave communication antenna can be electrically connected to the second rectification circuit 223. When the control end of the radio frequency switch 230 receives a second control signal, the first end of the radio frequency switch 230 conducts with the third end of the radio frequency switch 230, whereby the millimeter-wave communication antenna can be electrically connected to the communication circuit.

[0070] In an embodiment where the millimeter-wave communication antenna is multiplexed as a wireless charging receiving antenna to avoid interference between the charging function and the communication function, first, the charging signal received by the millimeter-wave communication antenna multiplexed as the wireless charging receiving antenna can be down-converted to an intermediate frequency and then rectified to form a DC signal. That is, the wireless charging module may further include a frequency reduction unit electrically connected between the millimeter-wave communication antenna and the second rectification circuit. The frequency reduction unit down-converts the charging signal received by the millimeter-wave communication antenna multiplexed as the wireless charging receiving antenna to an intermediate frequency.

[0071] In the embodiment shown in FIG. 2, the first rectification circuit 222 and the second rectification circuit 223 in the same wireless charging module 200 are electrically connected to the same DC aggregation circuit 500.

[0072] The DC aggregation circuits 500 corresponding to different wireless charging modules 200 may be connected in parallel, in series, or in a combination of parallel and series connections.

[0073] As a preferred embodiment, the wireless charging device further includes at least one wireless charging signal transmission module, and the wireless charging signal transmission module is provided on the charging module carrier. By providing the wireless charging signal transmission module, the wireless charging device according to the present disclosure can also have the function of charging other devices.

[0074] In the present disclosure, the specific structure of the wireless charging signal transmission module is not particularly limited. As a preferred embodiment, the wireless charging signal transmission module includes a wireless charging signal transmission antenna. Preferably, the wireless charging signal transmission antenna may include a plurality of third antenna array elements arranged in an array. Preferably, the structure of the third antenna array element is the same as that of the first antenna array element, and thus, the wireless charging signal transmission antenna may be multiplexed as a wireless charging reception antenna.

[0075] As shown in FIG. 11, an electronic device having a wireless charging signal transmission antenna can charge an electronic device having a wireless charging reception antenna while charging using a wireless charging transmission device.

[0076] As shown in FIG. 12, when the wireless charging device has a wireless charging transmission antenna for wireless charging transmission, it is necessary to input parameters in the control direction required for beam control by a communication detection circuit. At the same time, the millimeter-wave wireless charging signal generated by the signal generator is converted into an intermediate frequency module by a pre-stage amplifier, and then the electrical energy is converted into millimeter-wave energy by an emitter secondary amplifier and transmitted from the wireless charging transmission antenna.

[0077] When the millimeter-wave frequency band is high, the secondary amplifier may still be insufficient, and a tertiary amplifier is also required.

[0078] In the above embodiment, an intermediate frequency module is required. Also, the millimeter-wave communication antenna may be multiplexed as a wireless charging transmission antenna.

[0079] FIG. 5 is a schematic diagram of the wireless charging module 200. The wireless charging module 200 includes two charging sub-modules and one positioning sub-module. The first charging sub-module includes one rear-facing wireless charging antenna, and the second charging sub-module includes one obliquely rear-facing wireless charging antenna. Also, in the embodiment shown in FIG. 5, the wireless charging module 200 corresponds to one millimeter-wave communication antenna, and the orientation of the millimeter-wave communication antenna is horizontal.

[0080] In the embodiment shown in FIG. 5, the millimeter-wave communication antenna may be multiplexed as a wireless charging receiving antenna, and the millimeter-wave communication antenna may be used as a beacon antenna of the second charging sub-module.

[0081] Also, the first antenna array elements of the wireless charging antenna of the first charging sub-module and the second antenna array elements of the corresponding beacon antenna are arranged in a UPA. Also, the total number of the first antenna array elements of the wireless charging antenna 221 and the second antenna array elements of the corresponding beacon antenna 211 is 144, and the structures of the first antenna array elements and the second antenna array elements are the same. For convenience of explanation, the first antenna array elements and the second antenna array elements are collectively referred to as antenna array elements. These 144 antenna array elements are planned for four radio frequency channels, and each radio frequency channel includes 36 antenna array elements. 12 antenna array elements are arranged in the first arrangement direction, and 3 antenna array elements are arranged in the second arrangement direction. The first arrangement direction is one of the horizontal direction and the vertical direction, and the second arrangement direction is the other of the horizontal direction and the vertical direction. The antenna array elements in the first row arranged along the first arrangement direction are used as a beacon antenna (either horizontal polarization or vertical polarization is acceptable), the antenna array elements in the second row arranged along the first arrangement direction are for horizontal polarization, and the antenna array elements in the third row arranged along the first arrangement direction are for vertical polarization.

[0082] In view of the limited bandwidth, the number of first antenna array elements of the wireless charging antenna of the second charging sub-module may be 48 to 128. In two wireless frequency channels, 24 to 64 first antenna array elements are arranged in each channel. 12 to 32 first antenna array elements are arranged in the first arrangement direction, and 2 first antenna array elements are arranged in the second arrangement direction. The first antenna array elements in the first row arranged along the first arrangement direction are for horizontal polarization, and the first antenna array elements in the second row arranged along the first arrangement direction are for vertical polarization.

[0083] All antenna array elements of the millimeter-wave communication antenna are first antenna array elements. The first antenna array elements are arranged as a UPA and use horizontal and vertical cross-polarization as a whole (for single-row or single-column horizontal or vertical polarization, horizontal and vertical cross-polarization is more space-saving, that is, the same space allows a larger total number of array elements, and the beamforming method is more flexible). The wireless charging antenna may be multiplexed as the beacon antenna of the second charging sub-module.

[0084] Of course, the present disclosure is not limited thereto. For example, the charging device includes three rear-facing wireless charging receiving antennas, three wireless charging receiving antennas in three different lateral directions respectively, and three diagonally rear-facing wireless charging receiving antennas (a total of nine wireless charging receiving antennas). To simplify the structure, the four beacon antennas may be respectively set as the beacon antenna corresponding to the rear-facing wireless charging receiving antenna and the three beacon antennas corresponding to the three lateral wireless charging receiving antennas respectively. The three diagonally rear-facing wireless charging receiving antennas share the lateral wireless charging receiving antenna and the beacon antenna with the closest orientation angle respectively.

[0085] The main function of the beacon antenna is to broadcast the wireless charging transmitter, and the wireless charging transmitter can effectively obtain the position of the wireless charging device through rough scanning. In the above embodiment, there are significant differences in the positions and directions of the three beacon antennas, which is more advantageous for quickly establishing communication handshakes and positioning between the wireless charging transmitter and the wireless charging device. In addition, at least three beacon antennas with significantly different directions are also advantageous for improving the anti-interference ability against obstacles in the millimeter-wave transmission path. Through multi-path caused by millimeter-wave reflection, the communication handshake with the wireless charging transmitter can be realized, providing a reliable guarantee in terms of positioning robustness and accuracy in two dimensions.

[0086] As shown in FIG. 6, when the relative positions of multiple millimeter-wave array beacon antennas (i.e., multiple positioning sub-modules) existing in the present disclosure are determined, when there are multiple wireless charging transmitters in the application scenario, the distance and angle of multiple wireless charging transmitters 300 can be synchronously calculated based on the cooperative handshake success information of the multiple beacon antennas, and it is possible to realize simultaneous positioning of multiple wireless charging transmitters.

[0087] After that, by further traversing the wireless charging efficiency and power load information in the handshake success information of the millimeter-wave array beacon antenna and the wireless charging transmitter 300, the average wireless charging efficiency and average power load of each wireless charging transmitter 300 for each millimeter-wave array beacon antenna are calculated. Then, based on the average value statistical method of the average wireless charging efficiency and average power load, different determination principles are determined. Based on the overall average value, a certain wireless charging transmitter 300 is determined and preferentially selected. Or, based on the group average value of beacon antennas in different directions, several wireless charging transmitters 300 are determined and preferentially selected, or wireless charging of an electronic device having multiple millimeter-wave array beacon antennas by a certain or several wireless charging transmitters 300 is realized.

[0088] After the alignment between the wireless power transmission device and the wireless power charging device is completed, the whole or a group in a certain direction maintains only one beacon antenna in a communication state, and the other beacon antennas are all used as wireless power receiving antennas.

[0089] As a second aspect of the present disclosure, a method for controlling a wireless power charging device is provided. The wireless power charging device is the wireless power charging device according to the first aspect of the present disclosure. As shown in FIG. 7, the method includes the following steps S210 to S230.

[0090] In step S210, each positioning sub-module determines the position information of the wireless power transmission device.

[0091] In step S220, the positioning sub-module transmits the position information of the wireless power receiving antenna in each charging sub-module to the wireless power transmission device.

[0092] In step S230, beam training is performed on each wireless power receiving antenna so as to realize beam pairing between each wireless power receiving antenna and the wireless power transmission device.

[0093] As described above, since the plurality of positioning sub-modules 210 are respectively provided at different positions of the charging module carrier 100, each positioning sub-module 210 can communicate with the wireless power transmission device 300, and can quickly and accurately determine the position of the wireless power transmission device 300.

[0094] After determining the position of the wireless charging transmitting device 300, by transmitting the position information of each charging sub-module 220 to the wireless charging transmitting device 300, the relative positional relationship between the wireless charging transmitting device 300 and the wireless charging receiving antennas of each charging sub-module 220 can be further determined, and the beam can be trained to realize beam pairing between each wireless charging receiving antenna and the wireless charging transmitting device 300. The wireless charging device according to the present disclosure utilizes a plurality of positioning sub-modules to simultaneously position the wireless charging transmitting device 300, so that the accurate positioning of the wireless charging transmitting device 300 can be realized. Accordingly, more accurate beam pairing can be realized and the charging efficiency can be improved.

[0095] As can be seen from the above, by providing the positioning sub-modules 210 located at different positions, the efficiency and accuracy of positioning the wireless charging transmitting device 300 can be improved, and the efficiency of charging the battery using the wireless charging device can be improved.

[0096] Also, the wireless charging device includes a plurality of charging sub-modules 220, and each charging sub-module 220 can receive the wireless charging signal transmitted from the wireless charging transmitting device 300 and convert it into electrical energy, further improving the efficiency of charging the battery using the wireless charging device.

[0097] The optimal beam pairing angle is related to the orientation of the wireless charging antenna. As a preferred embodiment, the wireless charging receiving antennas in a plurality of wireless charging modules have at least two different orientations. That is, the wireless charging receiving antennas in the wireless charging device have at least two different orientations.

[0098] For the wireless charging transmitting device 300 at different positions, since the beam pairing angle between at least some of the wireless charging receiving antennas and the wireless charging transmitting device is at or close to the optimal beam pairing angle, the wireless charging transmitting device 300 can obtain relatively high charging efficiency at different positions of the wireless charging device.

[0099] In the present disclosure, there is no particular limitation on how the positioning sub-module determines the position information of the wireless power transmission device. As a preferred embodiment, as shown in FIG. 8, before the step of determining the position information of the wireless power transmission device by the positioning sub-module (step S210), the method further includes the following step S202.

[0100] In step S202, each positioning sub-module transmits a communication handshake message.

[0101] As described above, the positioning sub-module may include a beacon antenna. In this embodiment, the beacon antenna may broadcast the communication handshake message in a broadcast manner.

[0102] Accordingly, the step of determining the position information of the wireless power transmission device by each positioning sub-module (that is, step S220) specifically further includes the step of determining the position information of the wireless power transmission device based on the handshake success information.

[0103] When the wireless power device includes a plurality of wireless power receiving antennas, the position information of the wireless power transmission device may include the relative positional relationship between each wireless power receiving antenna.

[0104] As described above, after the positioning sub-module transmits the relative positional relationship between each wireless power receiving antenna, it is advantageous to achieve a rough alignment between the wireless power transmission device and each wireless power receiving antenna. Note that the "relative positional relationship between each wireless power receiving antenna" mainly includes position deviation values obtained based on the designed distances and angles of each wireless power receiving antenna.

[0105] As described above, in different charging sub-modules, the arrangement method of the first antenna array elements is the same. That is, in different charging sub-modules, there are wireless charging receiving antennas with the same orientation. The wireless charging antennas with the same orientation can be regarded as the same antenna group. Note that the orientations of the wireless charging antennas in different antenna groups are different.

[0106] In order to improve the charging efficiency, step S230 of performing beam training on each wireless charging receiving antenna specifically includes steps of performing beam training on each antenna group respectively.

[0107] That is, in the present disclosure, the wireless charging receiving antennas with the same orientation are trained together. As a preferred embodiment, the same codebook is used to perform beam training on the wireless charging receiving antennas with the same orientation (in the present disclosure, the wireless charging receiving antenna may also be called a sub-area array), and the codebooks used for the wireless charging receiving antennas with different orientations are also different.

[0108] In the present disclosure, there is no particular limitation on how to specifically execute the beam training. For example, the design of the codebook and the beam training algorithm can be performed for the same antenna group, and wide beam high-speed access can be simulated. Specifically, the codebook for beam training includes a master codebook and a secondary codebook. The beam training includes two stages: rough training performed by the master codebook and fine training performed by the secondary codebook. And both of the two stages are decomposed into two dimensions of the horizontal angle and the pitch angle required for the 3D beam.

[0109] After beam training is completed, beam fine-tuning adaptation can be performed on at least one wireless charging receiving antenna within the same group. For example, for the small-dimensional equivalent equally spaced linear array after beam training of each wireless charging receiving antenna group, a few pilots are used to quickly estimate based on the least squares method or the mean square method or a machine learning method, and beam fine-tuning adaptation of a specific wireless charging receiving antenna within the group can be realized.

[0110] After pairing is completed, each wireless charging receiving antenna can dynamically track the channel gain and beam angle based on the principle of predictive dynamic filtering.

[0111] In some cases, a plurality of wireless charging transmitting devices are provided. The charging transmitting device can include its own wireless charging efficiency and power load information in the handshake success information.

[0112] Thus, in step S210, the position information of a plurality of wireless charging transmitting devices can be determined. In the present disclosure, one or more can be selected from a plurality of wireless charging transmitting devices to charge the electronic device. Accordingly, when determining the position information of a plurality of wireless charging transmitting devices according to the handshake message information of each positioning sub-module, before the step of performing beam training on at least one of the wireless charging receiving antennas, the method includes the step of traversing the wireless charging efficiency and power load information in the handshake success information, and the step of calculating the average wireless charging efficiency and average power load for each wireless charging module of each wireless charging transmitting device based on the wireless charging efficiency and power load information of each wireless charging transmitting device, and the step of determining a wireless charging transmitting device for wireless charging based on the calculated average wireless charging efficiency and average power load.

[0113] As described above, based on the above-described average value statistical method of the average wireless charging efficiency and the average power load, different determination principles are determined, and based on the overall average value, a certain wireless charging transmitter 300 is determined and preferentially selected. Alternatively, based on the group average values of the beacon antennas in different directions, several wireless charging transmitters 300 are determined and preferentially selected, and wireless charging to an electronic device having a plurality of millimeter-wave array beacon antennas by one or several wireless charging transmitters 300 is realized.

[0114] When the moving range of the electronic device (for example, a mobile phone) including the wireless charging device is large, the channel state changes. In order to avoid charging interruption due to the movement of the electronic device, preferably, as shown in FIG. 8, after step S230, the method may further include the following steps S240 to S250.

[0115] In step S240, the position information of the electronic device including the wireless charging device is determined. In step S250, when the position information of the electronic device indicates that the position change range of the wireless charging device exceeds a predetermined threshold, the reference signal receiving frequency RSRP and / or the signal-to-noise ratio SNR of each wireless charging antenna are determined.

[0116] Based on the reference signal receiving frequency (RSRP, Reference Signal Receiving Power) or the signal-to-noise ratio (SNR, SIGNAL-NOISE RATIO) of each wireless charging antenna, it is determined whether to perform beam training for each wireless charging receiving antenna.

[0117] For example, when the RSRP of the wireless charging antenna is low, beam training is performed again for the wireless charging antenna.

[0118] In the present disclosure, there is no particular limitation on how to determine the position information of the electronic device. For example, the position information of the electronic device can be determined by a software calculation method.

[0119] To quickly determine the location information of the electronic device and improve the execution efficiency of the method, preferably, the location information of the electronic device is provided by a location sensor. The location sensor is hardware provided in the electronic device and can accurately determine the location information of the electronic device. Compared with software calculation, reading the location information of the electronic device provided by the location sensor is not only more accurate but also more efficient.

[0120] When the position change range of the wireless charging device exceeds a predetermined threshold, it indicates that the channel state also changes significantly. By performing beam training again, higher charging efficiency can be obtained.

[0121] In the present disclosure, the specific type of the location sensor is not particularly limited. The location sensor may be at least one of a gyroscope of a mobile terminal, an ultra-wideband (UWB), and a Bluetooth (registered trademark) sensor, as long as the terminal location information of the terminal can be identified.

[0122] To improve the charging efficiency, as a preferred embodiment, as shown in FIG. 8, before step S230, the method further includes the following step S225.

[0123] In step S225, the remaining battery level is determined. When the remaining battery level is lower than a predetermined percentage of the full charge amount, the step of performing beam training on each wireless charging receiving antenna is executed for the first number of charging sub-modules.

[0124] When the remaining battery level exceeds the predetermined percentage of the full charge amount, the step of performing beam training on each wireless charging receiving antenna is executed for the second number of charging sub-modules, and the first number is greater than the second number.

[0125] That is, when the remaining battery level is low, more charging sub-modules are used to charge the battery. When the remaining battery level reaches a certain amount, the number of operating charging sub-modules is decreased, and the battery is charged in a "trickle" manner.

[0126] As described above, the millimeter-wave communication antenna of the electronic device may be multiplexed as a wireless charging receiving antenna, and the wireless charging device includes a radio frequency switch. Accordingly, the method After performing beam pairing between the wireless charging receiving antenna and the wireless charging transmitting device, generating a first control signal; And transmitting the first control signal to a control end of the radio frequency switch.

[0127] That is, after the beam pairing is completed, the wireless charging device enters a charging state. To improve the charging efficiency, the radio frequency switch is controlled to electrically connect the millimeter-wave communication antenna and the second rectifying circuit so that the millimeter-wave communication antenna functions as a wireless charging receiving antenna.

[0128] When the remaining battery level reaches a predetermined percentage of the full charge amount, it is possible to control the millimeter-wave communication antenna not to function as a wireless charging receiving antenna. Accordingly, the method When the remaining battery level exceeds the predetermined percentage of the full charge amount, generating a second control signal; And transmitting the second control signal to a control end of the radio frequency switch.

[0129] After the remaining battery level reaches a certain value, by electrically connecting the millimeter-wave communication antenna to the corresponding communication circuit via the radio frequency switch, the millimeter-wave communication antenna can continue to realize the communication function.

[0130] As a third aspect of the present disclosure, an electronic device is provided, which includes a wireless charging device, a processor, and a memory module. The wireless charging device is the wireless charging device according to the first aspect of the present disclosure, and an executable program is stored in the memory module.

[0131] When the processor calls the executable program, it can execute the method according to the second aspect of the present disclosure.

[0132] The processor can improve the efficiency of wireless charging by controlling the wireless charging device according to the method according to the present disclosure.

[0133] Preferably, the terminal includes a plurality of millimeter-wave communication antennas. The number of the millimeter-wave communication antennas is the same as the number of the wireless charging modules, and the millimeter-wave communication antennas are provided in a one-to-one correspondence with the wireless charging modules.

[0134] FIG. 9 provides a schematic structural diagram of an electronic device. In such an embodiment, the electronic device is a mobile phone. As shown in the figure, the charging module carrier 100 is a part of the case of the electronic device.

[0135] Preferably, the electronic device can implement 4G communication and 5G communication. Correspondingly, the electronic device may include a 4G LTE diversity antenna and a millimeter-wave communication antenna 700. In the embodiment shown in FIG. 9, the electronic device includes three millimeter-wave communication antennas 700 and also includes three wireless charging modules.

[0136] Preferably, the electronic device may further include antennas such as an NFC antenna, a UWB&BT&WIFI antenna, a 4G LTE antenna, and a Sub6GHz frequency band antenna.

[0137] In order to improve the heat dissipation performance, a heat dissipation film may be provided on the charging module carrier 100.

[0138] The electronic device may be any one of a mobile phone, a tablet computer, a CPE, and a smart home device.

[0139] As a fourth aspect of the present disclosure, a computer-readable storage medium is provided, and an executable program is stored in the computer-readable storage medium. When the executable program is called, the method according to the second aspect of the present disclosure can be realized.

[0140] A person skilled in the art can understand that all or some of the steps of the methods, functional modules / units within the systems and apparatuses disclosed above may be implemented by software, firmware, hardware, and appropriate combinations thereof. In the case of hardware implementation, the division between the functional modules / units described in the above description does not necessarily correspond to the division of physical components. For example, one physical component may have multiple functions, or one function or step may be jointly executed by several physical components. Some physical components or all physical components may be implemented as software executed by a processor such as a central processing unit, a digital signal processor, or a microprocessor, or as hardware, or as an integrated circuit such as an application-specific integrated circuit. Such software may be distributed on a computer-readable medium, which may include a computer storage medium (or non-transitory medium) and a communication medium (or transitory medium). As known to those skilled in the art, the term computer storage medium includes any method or technology for implementing volatile and non-volatile, removable and non-removable media for storing information (such as computer-readable instructions, data structures, program modules, or other data). The computer storage medium includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disk (DVD) or other optical disk storage, magnetic tape cartridges, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium that stores the desired information and is accessible by a computer. Further, as known to those skilled in the art, the communication medium generally includes computer-readable instructions, data structures, program modules, or other data such as a modulated data signal like a carrier or other transmission mechanism, and may include any information distribution medium.

[0141] This disclosure discloses exemplary embodiments and uses specific terms, but they are used only as general exemplary meanings and should be construed and not used for purposes of limitation. In some embodiments, as will be apparent to those skilled in the art, unless otherwise specified, features, characteristics, and / or elements described in combination with a particular embodiment may be used alone or in combination with features, characteristics, and / or elements described in combination with other embodiments. Thus, as will be understood by those skilled in the art, various changes in form and detail can be made without departing from the scope of the disclosure as defined by the appended claims.

Claims

1. A wireless charging device including a charging module carrier and a plurality of wireless charging modules, wherein the wireless charging module includes a positioning sub-module and a charging sub-module, the charging sub-module includes at least one wireless charging receiving antenna, the positioning sub-module is for identifying the position of a wireless charging transmitting device, the plurality of wireless charging modules are respectively provided at a plurality of mounting positions of the charging module carrier, and after identifying the position of the wireless charging transmitting device, the positioning sub-module transmits the position information of each wireless charging receiving antenna to the wireless charging transmitting device.

2. The wireless charging device according to Claim 1, wherein the wireless charging receiving antennas in the plurality of wireless charging modules have at least two different orientations.

3. The wireless charging device according to Claim 2, wherein the wireless charging receiving antenna includes an array formed by arranging a plurality of first antenna array elements.

4. The charging sub-module includes a plurality of the wireless charging receiving antennas, the orientations of the first antenna array elements in the same wireless charging receiving antenna are the same, and the orientations of the first antenna array elements in different wireless charging receiving antennas are different. The wireless charging device according to Claim 3, wherein the position information of the wireless charging receiving antenna includes relative position distribution information among the plurality of wireless charging receiving antennas.

5. The charging sub-module further includes a plurality of first rectification circuits. In the same charging sub-module, the plurality of first rectification circuits correspond one-to-one to the plurality of wireless charging receiving antennas, and the first rectification circuit is electrically connected to the corresponding wireless charging receiving antenna so as to rectify the signal received by the corresponding wireless charging receiving antenna.

6. The wireless charging device further includes a centralized charging management circuit and a plurality of DC aggregation circuits. The plurality of wireless charging modules correspond one-to-one to the plurality of DC aggregation circuits. The input end of the DC aggregation circuit is electrically connected to the first rectification circuit of the corresponding wireless charging module, and the output end of the DC aggregation circuit is electrically connected to the input end of the centralized charging management circuit. The centralized charging management circuit rectifies and equalizes the received electrical signal and outputs a charging current or charging voltage that meets predetermined conditions, for the wireless charging device according to claim 5.

7. The positioning sub-module includes at least one beacon antenna, and the beacon antenna broadcasts a handshake message and receives a handshake success message returned from the wireless charging transmitter, for the wireless charging device according to claim 1.

8. The beacon antenna includes an array formed by arranging a plurality of second antenna array elements. The orientations of the second antenna array elements in the same beacon antenna are the same, and the orientations of the second antenna array elements in different beacon antenna arrays are different, for the wireless charging device according to claim 7.

9. Each of the beacon antennas corresponds to at least one of the wireless charging receiving antennas, and the angle between the orientation of the beacon antenna and the orientation of the target wireless charging receiving antenna does not exceed a predetermined angle, where the target wireless charging receiving antenna is the wireless charging receiving antenna corresponding to the beacon antenna, for the wireless charging device according to claim 8.

10. The second antenna array elements in the beacon antenna are arranged in the form of an equally spaced linear array ULA, or The beacon antenna includes a ULA formed by arranging a plurality of second antenna array elements and an equally spaced area array UPA formed by arranging a plurality of second antenna array elements, for the wireless charging device according to claim 8.

11. The wireless charging module further includes a second rectifying circuit, and the second rectifying circuit is electrically connected to the corresponding millimeter-wave communication antenna, for the wireless charging device according to any one of claims 1 to 10.

12. The wireless charging module further includes a radio frequency switch. A first end of the radio frequency switch is electrically connected to the corresponding millimeter-wave communication antenna. A second end of the radio frequency switch is electrically connected to the second rectifying circuit. A third end of the radio frequency switch is electrically connected to a communication circuit corresponding to the millimeter-wave communication antenna. When the control end of the radio frequency switch receives a first control signal, the first end and the second end of the radio frequency switch are conducted. When the control end of the radio frequency switch receives a second control signal, the first end and the third end of the radio frequency switch are conducted. The wireless charging device according to claim 11.

13. The wireless charging device further includes at least one wireless charging signal transmitting module, and the wireless charging signal transmitting module is provided on the charging module carrier. The wireless charging device according to any one of claims 1 to 10.

14. A method for controlling a wireless charging device, wherein the wireless charging device is the wireless charging device according to any one of claims 1 to 13, and the method includes: determining the position information of the wireless charging transmitting device by each positioning sub-module; transmitting, by the positioning sub-module, the position information of the wireless charging receiving antenna in each charging sub-module to the wireless charging transmitting device; performing beam training on at least one of the wireless charging receiving antennas so as to realize beam pairing between the corresponding wireless charging receiving antenna and the wireless charging transmitting device. The method for controlling a wireless charging device further includes.

15. Before determining the position information of the wireless charging transmitting device by the positioning sub-module, the method includes: each positioning sub-module further includes transmitting a communication handshake message; the step of determining the position information of the wireless charging transmitting device by each positioning sub-module includes: further determining the position information of the wireless charging transmitting device based on the handshake success information. The method according to claim 14.

16. When determining the position information of a plurality of wireless charging transmitting devices according to the handshake message information of each positioning sub-module, before the step of performing beam training on at least one of the wireless charging receiving antennas, the method includes: A step of traversing the wireless charging efficiency and power load information in the handshake success information; A step of calculating the average wireless charging efficiency and average power load for each wireless charging module of each wireless charging transmission device based on the wireless charging efficiency and power load information of each wireless charging transmission device; A method according to claim 15, further comprising a step of determining a wireless charging transmission device for wireless charging in a plurality of the wireless charging devices based on the calculated average wireless charging efficiency and average power load.

17. The wireless charging receiving antennas in the same direction are in the same antenna group, and the directions of the wireless charging receiving antennas in different antenna groups are different. The step of performing beam training on at least one of the wireless charging receiving antennas is The method according to claim 14, including a step of performing beam training on each antenna group respectively.

18. After the step of performing beam training on at least one of the wireless charging receiving antennas, the method further includes A step of determining the position information of the electronic device including the wireless charging device; When the position information of the electronic device indicates that the position change range of the wireless charging device exceeds a predetermined threshold, a step of determining the reference signal receiving frequency RSRP and / or signal-to-noise ratio SNR of each wireless charging antenna; A method according to claim 14, further comprising a step of determining whether to execute the step of performing beam training on at least one of the wireless charging receiving antennas based on the RS RP and / or SNR of each wireless charging antenna.

19. The method according to claim 18, wherein the electronic device includes a position sensor, and the position information of the electronic device is provided by the position sensor.

20. The method includes A step of determining the remaining battery level; When the remaining battery level is lower than a predetermined ratio of the full charge amount, a step of executing the step of performing beam training on at least one of the wireless charging receiving antennas for a first number of charging sub-modules. The step of performing beam training on at least one of the wireless charging receiving antennas when the remaining amount of the battery exceeds a predetermined ratio of the full charge amount is a step of performing the step on a second number of charging sub-modules, where the first number is greater than the second number, and the method according to any one of claims 14 to 19 further includes this step.

21. The wireless charging device includes a radio frequency switch, and the method includes After performing beam pairing between the wireless charging receiving antenna and the wireless charging transmitting device, a step of generating a first control signal; The method according to any one of claims 14 to 19 further includes a step of transmitting the first control signal to a control end of the radio frequency switch.

22. The method includes When the remaining amount of the battery exceeds a predetermined ratio of the full charge amount, a step of generating a second control signal; The method according to claim 21 further includes a step of transmitting the second control signal to a control end of the radio frequency switch.

23. An electronic device including a wireless charging device, a processor, and a storage module, where the wireless charging device is the wireless charging device according to any one of claims 1 to 13, and an executable program is stored in the storage module. When the processor calls the executable program, the electronic device can execute the method according to any one of claims 14 to 22.

24. An electronic device according to claim 23, including a plurality of millimeter-wave communication antennas, where the number of the millimeter-wave communication antennas is the same as the number of the wireless charging modules, and the millimeter-wave communication antennas are provided in a one-to-one correspondence with the wireless charging modules.

25. A computer-readable storage medium, in which an executable program is stored, and when the executable program is called, the method according to any one of claims 14 to 22 can be realized.

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