Wireless charging positioning device, method and storage medium

Abstract

The present disclosure is about a wireless charging positioning device, method, receiving end and storage medium, which are applied to the transmitting end, and the device includes: at least one group of detection coils, each group of detection coils includes N detection coils, and the detection areas covered by different detection coils are at least partially different; the detection coils are used to transmit detection signals and receive feedback signals sent by the receiving end, wherein N is a positive integer greater than or equal to 2; a processing module is connected to the N detection coils, and is used to determine the position area of ​​the receiving end on the transmitting end according to the feedback signals received by the N detection coils. In this way, the detection coil can be used to realize the automatic positioning of the position of the corresponding receiving end on the transmitting end, improve the accuracy of the determined position of the receiving end, and then automatically determine whether the receiving end is aligned with the transmitting end.

Description

Technical Field

[0001] The present disclosure relates to the technical field of wireless charging, and in particular to a wireless charging positioning device, method and storage medium. Background Art

[0002] With the development of charging technology, more and more terminals are beginning to use wireless charging for charging. Usually, users place the terminal (i.e., the receiving end) on the wireless charging base (transmitter) for wireless charging. However, during wireless charging, the alignment position of the receiving end and the transmitting end is often offset, such as the receiving end is not placed in the transmitting coil of the transmitting end, resulting in the electromagnetic waves and other signals of wireless charging not being fully utilized by the receiving end, resulting in low charging efficiency and serious energy loss.

[0003] In the related art, the position of the receiving end is usually located by human observation to determine whether the receiving end is off-center. However, the location of the receiving end located in this way is often inaccurate and low in intelligence. Therefore, how to automatically and accurately locate the receiving end placed on the wireless charging base (transmitter) has become a technical problem that needs to be solved urgently. Summary of the invention

[0004] The present disclosure provides a wireless charging positioning device, method and storage medium, and the technical solution is as follows:

[0005] According to a first aspect of an embodiment of the present disclosure, a wireless charging positioning device is provided, which is applied to a transmitting end and includes:

[0006] At least one group of detection coils, each group of detection coils includes N detection coils, and the detection areas covered by different detection coils are at least partially different; the detection coils are used to transmit detection signals and receive feedback signals transmitted by the receiving end, wherein N is a positive integer greater than or equal to 2;

[0007] A processing module is connected to the N detection coils and is used to determine a location area of ​​the receiving end on the transmitting end according to the feedback signals received by the N detection coils.

[0008] Optionally, at least two of the detection coils are partially stacked.

[0009] Optionally, the detection coil is a polygon, wherein the stacked portion between the at least two detection coils is one side or multiple sides of the polygon.

[0010] Optionally, the processing module is further used for:

[0011] Determining whether a feedback condition is met based on a corresponding feedback signal received by each of the detection coils;

[0012] Determine a detection area covered by the detection coil corresponding to the feedback condition;

[0013] The location area of ​​the receiving end is determined according to the detection area covered by the detection coil corresponding to the feedback condition.

[0014] Optionally, among the M groups of detection coils, areas covered by at least two groups of the N detection coils are partially overlapped, wherein M is a positive integer greater than or equal to 2;

[0015] The processing module is also used for:

[0016] According to the detection areas covered by the detection coils that meet the feedback conditions in each group of N detection coils, an intersection area of ​​the detection areas covered by the detection coils that meet the feedback conditions in M ​​groups of N detection coils is determined as the location area of ​​the receiving end.

[0017] Optionally, the N detection coils are located within a preset range of a base of the transmitting end.

[0018] Optionally, the processing module is further used for:

[0019] Determine the area where the charging coil of the transmitting end is located; wherein the charging coil is used to transmit a wireless charging signal to provide wireless power to the receiving end;

[0020] According to the location area of ​​the receiving end, it is determined whether the location area of ​​the receiving end overlaps with the area where the charging coil is located.

[0021] Optionally, the device further comprises: a driving module, the driving module being connected between the transmitting end and the processing module and being used to drive the transmitting end to move;

[0022] The processing module is also used for:

[0023] If the location area of ​​the receiving end does not overlap with the area where the charging coil is located, a control signal is sent to the driving module; wherein the control signal is used to control the driving module to drive the transmitting end to move according to the location area of ​​the receiving end so that the location area of ​​the receiving end overlaps with the area where the charging coil is located.

[0024] Optionally, the processing module is further used for:

[0025] Determining the center position of the location area of ​​the receiving end;

[0026] The control signal is specifically used to control the driving module to drive the transmitting end to move so that the area where the charging coil is located overlaps with the center position of the location area of ​​the receiving end.

[0027] Optionally, a cross-sectional area of ​​the detection coil is smaller than a cross-sectional area of ​​the charging coil.

[0028] According to a second aspect of an embodiment of the present disclosure, a wireless charging positioning method is provided, which is applied to a transmitting end and includes:

[0029] Utilize at least one group of detection coils preset in the transmitting end to transmit a detection signal, and receive a feedback signal sent by the receiving end, wherein each group of detection coils includes N detection coils, N is a positive integer greater than or equal to 2, and detection areas covered by different detection coils are at least partially different;

[0030] The location area of ​​the receiving end on the transmitting end is determined according to the feedback signals received by the N detection coils.

[0031] Optionally, determining the location area of ​​the receiving end corresponding to the transmitting end according to the feedback signals received by the N detection coils includes:

[0032] Determining whether a feedback condition is met based on the feedback signal received by each of the detection coils;

[0033] Determine a detection area covered by the detection coil corresponding to the feedback condition;

[0034] The location area of ​​the receiving end is determined according to the detection area covered by the detection coil corresponding to the feedback condition.

[0035] Optionally, the detection signal is a pulse signal, and the feedback signal includes: a resonance signal transmitted during a gap between two adjacent pulses in the pulse signal;

[0036] The method further comprises:

[0037] If the resonance energy of the resonance signal is greater than the energy threshold, and the resonance information is the resonance information with the maximum resonance energy among the N resonance information, it is determined that the feedback condition is met.

[0038] Optionally, the feedback signal includes: an output voltage generated based on the detection signal;

[0039] If the output voltage reaches the voltage threshold, it is determined that the feedback condition is met.

[0040] Optionally, there are M groups of detection coils, each group of detection coils includes N detection coils, and areas covered by at least two groups of the N detection coils are partially overlapped, wherein M is a positive integer greater than or equal to 2;

[0041] The determining the location area of ​​the receiving end according to the detection area covered by the detection coil corresponding to the feedback condition, comprises:

[0042] According to the detection areas covered by the detection coils that meet the feedback conditions in each group of N detection coils, an intersection area of ​​the detection areas covered by the detection coils that meet the feedback conditions in M ​​groups of N detection coils is determined as the location area of ​​the receiving end.

[0043] Optionally, the method further comprises:

[0044] Determine an area where a charging coil of the transmitting end is located, wherein the charging coil is used to transmit a wireless charging signal to provide wireless power to the receiving end;

[0045] According to the location area of ​​the receiving end, it is determined whether the location area of ​​the receiving end overlaps with the area where the charging coil is located.

[0046] Optionally, the method further comprises:

[0047] If the location area of ​​the receiving end does not overlap with the area where the charging coil is located, a control signal is sent to drive the transmitting end to move so that the location area of ​​the receiving end overlaps with the area where the charging coil is located.

[0048] Optionally, the method further comprises:

[0049] Determining the center position of the location area of ​​the receiving end;

[0050] The sending of a control signal to drive the transmitting end to move includes:

[0051] A control signal is sent to drive the transmitting end to move so that the area where the charging coil is located overlaps with the center position of the location area of ​​the receiving end.

[0052] According to a third aspect of an embodiment of the present disclosure, a receiving end is provided, including:

[0053] processor;

[0054] a memory for storing processor-executable instructions;

[0055] The processor is configured to: implement the steps of any of the above-described methods when executed.

[0056] According to a fourth aspect of an embodiment of the present disclosure, a non-temporary computer-readable storage medium is provided, on which a computer program is stored, and the program is executed by a processor to perform the steps of any of the methods described above.

[0057] The technical solution provided by the embodiments of the present disclosure may have the following beneficial effects:

[0058] In an embodiment of the present disclosure, a wireless charging positioning device is provided, which is applied to a transmitting end and includes: at least one group of detection coils, each group of detection coils includes N detection coils, and different detection coils cover different detection areas, and the detection coils are used to transmit detection signals and receive feedback signals sent by the receiving end; a processing module is connected to the N detection coils, and is used to determine the location area of ​​the receiving end on the transmitting end according to the feedback signals received by the N detection coils. In this way, since the detection areas covered by different detection coils are at least partially different, it means that the detection areas covered by different detection coils can at least cover different areas of the transmitting end, so that different feedback signals are obtained by detecting different detection areas, thereby obtaining different detection results, thereby determining the location area of ​​the receiving end.

[0059] Therefore, compared with the related art that requires human eye observation to locate the position of the receiving end, this embodiment can automatically locate the detection area covered by which detection coil the receiving end is through the detection signals emitted by multiple detection coils and the feedback signals sent by the receiving end, thereby automatically locating the position area of ​​the receiving end, and the position area of ​​the receiving end located in this way is more accurate than the position area of ​​the receiving end located by human eye observation.

[0060] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0061] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0062] Figure 1 is a structural schematic diagram of a wireless charging positioning device according to an exemplary embodiment;

[0063] Figure 2 is a set of structural schematic diagrams showing a wireless charging positioning device according to an exemplary embodiment;

[0064] Figure 3 is a circuit schematic diagram of a detection coil according to an exemplary embodiment;

[0065] Figure 4 is another structural schematic diagram of a wireless charging positioning device according to an exemplary embodiment;

[0066] Figure 5 is another structural schematic diagram of a wireless charging positioning device according to an exemplary embodiment;

[0067] Figure 6 is another structural schematic diagram of a wireless charging positioning device according to an exemplary embodiment;

[0068] Figure 7 is a flow chart of a wireless charging positioning method according to an exemplary embodiment;

[0069] Figure 8 is another flow chart of a wireless charging positioning method according to an exemplary embodiment;

[0070] Fig. 9 is a block diagram of a wireless charging positioning device according to an exemplary embodiment;

[0071] Fig.10 It is a block diagram of a transmitting end according to an exemplary embodiment. DETAILED DESCRIPTION

[0072] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Instead, they are merely examples of devices and methods consistent with some aspects of the present invention as detailed in the appended claims.

[0073] In the technical field of wireless charging, it includes: the transmitter of wireless charging and the receiver of wireless charging. Wireless charging technology mainly adopts the principle of electromagnetic induction. The transmitter generates a magnetic field by passing alternating current through the charging coil, and the magnetic field generates current. Here, the transmitter refers to the end used to transmit electromagnetic energy and the end provided with current by the charging coil, usually including a wireless charger; and the receiver refers to the end used to receive electromagnetic energy, usually including a charged mobile phone, tablet computer or wearable device. It can be seen that in wireless charging, since the transmitter uses the charging coil to emit a magnetic field outward, the higher the overlap between the charging coil and the receiver, that is, the more accurate the charging coil and the receiver are, the smaller the energy loss of the transmitter and the higher the charging efficiency. In this way, if the exact position of the receiving end can be located, the relative position relationship between the receiving end and the transmitting coil can be at least determined, so that the relative position can be adjusted in time to ensure that the energy loss is reduced and the charging efficiency is improved.

[0074] Based on this, Figure 1 is a schematic diagram of a wireless charging positioning device according to an exemplary embodiment. Figure 1 As shown, the wireless charging positioning device 100 is applied to the transmitting end, and includes:

[0075] At least one group of detection coils, each group of detection coils includes N detection coils 11, and the detection areas 110 covered by different detection coils 11 are at least partially different; the detection coils 11 are used to transmit detection signals and receive feedback signals sent by the receiving end, wherein N is a positive integer greater than or equal to 2;

[0076] The processing module is connected to the N detection coils 11 and is used to determine the location area of ​​the receiving end on the transmitting end according to the feedback signals received by the N detection coils 11 .

[0077] Here, the transmitter 100 may be a wireless charger. It should be supplemented that the transmitter may also be a terminal device, and reverse wireless charging is performed using the terminal device. The terminal device may be a mobile terminal or a fixed terminal, and the mobile terminal may be a mobile phone, a tablet computer, a laptop computer, or a wearable device, etc.; the fixed terminal may be a desktop computer or a smart TV, etc. In fact, any device that can wirelessly charge other devices should be regarded as the transmitter 100 described in this embodiment.

[0078] Here, the receiving end may also include a mobile terminal or a fixed terminal that has its own energy consumption requirements and can receive electric energy for wireless charging.

[0079] Here, the detection coil 11 may be a closed coil. When the detection coil is powered on, it will radiate electromagnetic energy outward, so that it can be received by the opposite end in the detection area 110 covered by the detection coil 11 and make corresponding feedback.

[0080] Here, the detection coil 11 is different from the transmitting coil of the transmitting end, wherein the transmitting coil can be used to transmit a wireless charging signal to provide wireless power to the receiving end.

[0081] In some embodiments, the detection coil and the transmitting coil are located in the same horizontal plane, that is, the detection coil and the transmitting coil are simultaneously arranged on a circuit board in the same horizontal plane, so that the overall thickness of the transmitting end can be reduced.

[0082] However, in this embodiment, after the location area of ​​the receiving end is determined, if the position of the transmitting coil needs to be adjusted, the detection coil will also move accordingly. Therefore, in this case, it may be necessary to verify the location area of ​​the receiving end again after adjusting the position of the transmitting coil. Therefore, in order to reduce the number of detections, in other embodiments, the detection coil and the transmitting coil are located in different horizontal planes. In this way, the detection coil and the transmitting coil can be separated, and when the detection coil detects the location area of ​​the receiving end, the position of the transmitting coil is automatically adjusted according to the determined location area, and during the adjustment process, there is no need to verify the location area of ​​the receiving end.

[0083] In addition, the area that can be covered by the N detection coils is larger than the area covered by the transmitting coil, so that the detection coil can detect whether a receiving end is placed in the area outside the transmitting coil.

[0084] Here, the processing module is generally used to control the overall operation of the transmitting end, such as data communication or data recording and other related operations. The processing module may include one or more processors to execute instructions to complete the corresponding operations. The processing module here can be used to determine the location area of ​​the receiving end, or can record the location area of ​​the receiving end.

[0085] In a specific implementation, the processing module may be a CPU (central processing unit) of the transmitter. Specifically, the processing module may be an AP (Application Processor). It is understandable that the operating system, user interface and application program of the transmitter are mostly executed on the AP.

[0086] It is understandable that if the receiving end is within the detection area 110 covered by the currently powered detection coil 11, the detection coil 11 can receive the feedback signal of the receiving end. If the receiving end is not placed in the detection area 110 covered by the currently powered detection coil 11, but if a feedback signal is received, then in this case the feedback signal of the receiving end will obviously be different from the feedback signal received when there is a receiving end. Therefore, in this embodiment, the position area of ​​the receiving end can be determined by the detection signal emitted by the detection coil 11 and the reception result of the received feedback signal, thereby automatically locating the position area of ​​the receiving end.

[0087] It can be understood that since the feedback signal is received by N different detection coils, and the detection areas covered by different detection coils are at least partially different, it means that the detection areas covered by different detection coils can at least cover different areas of the transmitting end, so that multiple different areas on the surface of the transmitting end can be covered as much as possible, so that different reception results can be obtained by detecting different detection areas, so as to detect whether there is a receiving end in these different areas, thereby automatically locating the position area of ​​the receiving end.

[0088] It should be added that the transmitting end usually includes a base for carrying the charged end or the receiving end, so that the receiving end can be placed on the base for charging. Figure 1 The launcher includes a base 10, where the base 10 can be circular or square, without any limitation.

[0089] As an optional embodiment, the N detection coils 11 are located within a preset range of the base 10 of the transmitting end.

[0090] Specifically, in some embodiments, the N detection coils may be located within a preset distance above the base 10 of the transmitting end; of course, in other embodiments, the N detection coils may also be located within a preset distance below the base 10 of the transmitting end. In short, the N detection coils can be used to detect the position area of ​​the receiving end placed on the base 10.

[0091] Specifically, taking the case where the detection areas covered by the N detection coils 11 are respectively located below the surface of the base 10 as an example, the detection areas covered by the N detection coils 11 are respectively located in completely different areas below the surface of the base 10. In this way, the detection of the position area of ​​the receiving end in different areas of the base surface can be achieved.

[0092] However, it should be understood that since the detection areas covered by the N detection coils are completely different areas, in some embodiments, there may be a gap between two adjacent detection coils. If the receiving end is in the space where the gap between the two adjacent detection coils is located, the receiving end may not be accurately detected, and the receiving end cannot be located. In order to minimize the gap between the detection coils as much as possible, and reduce the phenomenon that the receiving end cannot be detected because it is placed in the space where the gap between two adjacent detection coils is located. In other embodiments, at least two of the detection coils are partially stacked, that is, the detection areas covered by the two detection coils are partially the same and partially different.

[0093] For details, please refer to Figure 1 ,like Figure 1 As shown, in order to better distinguish different detection coils 11, at least two detection coils among the N detection coils may include: a first detection coil 11a and a second detection coil 11b. The first detection coil 11a covers the first detection area 110a, and the second detection coil 11b covers the second detection area 110b. It can be understood that, here, the partial overlapping placement between the first detection coil 11a and the second detection coil 11b means that some line segments in the coils of the first detection coil 11a and the second detection coil 11b are placed at the same position or at a similar position, so that the first detection area 110a and the second detection area 110b can be at least partially overlapped, thereby reducing the gap between the two detection areas, thereby reducing the occurrence of the phenomenon that the receiving end cannot be accurately detected because it is placed in the space where the gap between two adjacent detection coils is located.

[0094] Among them, the N detection coils can be detection coils of the same shape and the same specification parameters. Here, the specification parameters include: the length, width or height of the shape surrounded by the detection coil, and can also include the material or cross-sectional area of ​​the detection coil. In this way, it is convenient to make the detection coil when laying multiple detection coils.

[0095] Here, the shape of the detection coil can be adapted to the shape of the receiving end or the projection shape of the receiving end. For example, if the receiving end is a rectangular mobile phone, the detection coil can be laid out in a shape consistent with the shape of the receiving end or the projection shape of the receiving end.

[0096] In other embodiments, the shapes of the N detection coils may be different, and the specification parameters may also be different. For example, the N detection coils may be rectangular, triangular, or circular, etc. In this way, it can be adapted to the detection of receiving ends of different shapes and sizes.

[0097] In a specific embodiment, the detection coil is a polygon, wherein the overlapping portion between the at least two detection coils is one side or multiple sides of the polygon.

[0098] Please refer to Figure 1 Here, the polygon may be a triangle, and the portion between the at least two detection coils stacked is a side of the triangle. Of course, in other embodiments, the polygon may also be a quadrilateral or a pentagon.

[0099] It should be added that a detection result can be obtained through a group of detection coils, and this embodiment can obtain at least one detection result by setting at least one group of detection coils, and then comprehensively consider and analyze the at least one detection result to obtain a more accurate location area of ​​the receiving end. In this way, the accuracy of the location area of ​​the receiving end finally detected can be improved. In practical applications, the more groups of detection coils there are, the higher the accuracy of the location area of ​​the receiving end obtained.

[0100] In some embodiments, since the detection coils are partially stacked, in these embodiments, the detection coils can be grouped as a group of detection coils with stacked detection coils.

[0101] Specifically, in the case where the detection coil is a polygon and the partially stacked portion between at least two of the detection coils is one or more sides of the polygon, the partially stacked portion between at least two of the detection coils is one or more sides of the polygon as a reference side, and the detection coils having the reference side can be divided into a group.

[0102] Specifically, see Figure 2 , Figure 2 is a set of structural schematic diagrams showing a wireless charging positioning device according to an exemplary embodiment. Figure 2 As shown, the n detection coils in each group of detection coils have one edge stacked.

[0103] In order to better distinguish different groups of detection coils, the detection coils with side 1 as the reference side are used as the first group of detection coils 111, and the detection coils with side 2 as the reference side are used as the second group of detection coils 112. The detection results of the first group of detection coils 111 are obtained by energizing the first group of detection coils 111 in sequence and transmitting detection signals. In order to make the detection results more accurate, the second group of detection coils 112 can also be energized in sequence and transmit detection signals to obtain the detection results of the second group of detection coils 112; and according to the detection results of the first group of detection coils 111 and the detection results of the second group of detection coils 112, a more accurate position area of ​​the receiving end can be obtained.

[0104] In this embodiment, based on the placement of one or more edges of multiple stacked polygons, detection can be performed in sequence based on the stacked edges as reference edges, making it convenient for users to obtain detection results. In addition, by grouping based on one or more edges of multiple stacked polygons as reference edges, it is also convenient to improve the accuracy of the determined location area of ​​the receiving end based on the detection of multiple groups of the N detection coils. Furthermore, since the detection coils are deployed as regular polygons, it is also possible to conveniently calculate the center position of the location area of ​​the receiving end after determining the location area of ​​the receiving end, so that the transmitting coil is aligned with the center position of the location area of ​​the receiving end.

[0105] In the above embodiment, compared with the related art that requires human eye observation to locate the position of the receiving end, the reception result obtained by transmitting detection signals through multiple detection coils and receiving feedback signals can automatically locate the detection area covered by which detection coil the receiving end is, thereby automatically locating the position area of ​​the receiving end, and the position area of ​​the receiving end located in this way is more accurate than the position area of ​​the receiving end located by human eye observation.

[0106] Furthermore, by accurately locating the position area of ​​the receiving end, the relative position relationship between the receiving end and the transmitting coil can be accurately determined, so that the relative position can be adjusted in time, ultimately ensuring the reduction of energy consumption loss, thereby reducing the energy loss of wireless charging and improving the charging efficiency.

[0107] Further, as mentioned above, if the receiving end is within the detection area 110 covered by the currently powered detection coil 11, the detection coil 11 can receive the feedback signal of the receiving end. If the receiving end is not placed in the detection area 110 covered by the currently powered detection coil 11, but if a feedback signal is received, then in this case the feedback signal of the receiving end will obviously be different from the feedback signal received when there is a receiving end. Therefore, in practical applications, it is possible to determine whether the received feedback signal meets the feedback condition to determine whether it is the feedback signal fed back by the receiving end, thereby determining the detection area 110 covered by the currently powered detection coil 11, and finally determining whether there is a receiving end in the detection area 110 covered by the currently powered detection coil 11, so as to determine the location area of ​​the receiving end.

[0108] Specifically, in some embodiments, the processing module is further used for:

[0109] Determining whether a feedback condition is met based on the feedback signal received by each of the detection coils;

[0110] Determine a detection area covered by the detection coil corresponding to the feedback condition;

[0111] The location area of ​​the receiving end is determined according to the detection area covered by the detection coil corresponding to the feedback condition.

[0112] Here, the feedback condition refers to a condition under which it can be determined at least that the feedback signal is a feedback signal made by the receiving end based on the detection signal, rather than feedback generated by an interference signal.

[0113] In this way, by determining whether the feedback signal meets the feedback condition as the basis for determining whether the receiving end is in the detection area covered by the corresponding detection coil, the interference of the feedback signal received due to not being the receiving end can at least be eliminated. In other words, the corresponding feedback signal of the receiving end of the detection coil can only be considered as the feedback signal fed back by the receiving end if it meets the feedback condition, otherwise it is an interference signal. This further improves the accuracy of the determined location area of ​​the receiving end.

[0114] Specifically, in some embodiments, the detection signal is a pulse signal, and the feedback signal includes: a resonance signal transmitted during a gap between two adjacent pulses in the pulse signal;

[0115] The processing module is specifically used for:

[0116] If the resonance energy of the resonance signal is greater than the energy threshold, and the resonance signal is the resonance signal with the maximum resonance energy among the N resonance signals, it is determined that the feedback condition is met.

[0117] It is understandable that the charging circuit of the receiving end usually includes a resonant circuit, wherein the resonant circuit can store the electrical energy of the pulse signal in the resonant circuit when receiving the pulse signal sent by the transmitting end, and during the gap between two adjacent pulses in the pulse signal, that is, before the transmitting end sends the next pulse signal, the resonant circuit of the receiving end will gradually release the electrical energy stored in the previous pulse signal. The electrical energy released by the resonant circuit here can include the resonant energy of the resonant signal.

[0118] Further, it can be understood that when the position detection of the receiving end is required, the transmitting end usually sends detection signals one by one through the detection coil in order to detect the position of the receiving end.

[0119] Here, the energy threshold refers to an energy value set in advance that can at least exclude the energy brought by the interference signal. In some embodiments, the energy threshold can be the minimum resonance energy value or average resonance energy value of the receiving end determined in the historical reception results.

[0120] See also Figure 3 , Figure 3 is a circuit diagram of a detection coil according to an exemplary embodiment. Figure 3 As shown, there is no load on the detection coil 11, the detection coil 11 is a closed coil, and the detection coil 11 is connected to the power supply 12, so that the detection coil 11 will generate an electromagnetic field after being powered on. Here, the detection signal emitted by the detection coil is a pulse signal, and the pulse signal refers to a signal that emits a high-level voltage outward in an interval time period.

[0121] It is understandable that when the receiving end is placed in the detection area 110 covered by the currently powered detection coil 11 or near the detection area 110 covered by the currently powered detection coil 11, after receiving the pulse signal, the receiving end will feed back the resonance signal during the gap between two adjacent pulses in the pulse signal. Therefore, if the resonance energy of the resonance signal is greater than the energy threshold, it can at least be determined that the receiving end is in or near the detection area 110 covered by the currently powered detection coil 11.

[0122] In fact, the greater the electric energy released by the resonant circuit at the receiving end, the closer the detection coil sending the pulse signal is to the location of the receiving end.

[0123] Based on this, after each detection coil is energized in turn, if the detected resonance signal is the resonance signal with the maximum resonance energy among the N resonance signals, it can be determined that the receiving end is completely or partially located in the detection area 110 covered by the detection coil 11 corresponding to the resonance signal with the maximum energy. Among them, the portion of the receiving end located in the detection area 110 covered by the detection coil 11 corresponding to the resonance signal with the maximum energy is larger than the portion of the receiving end located in the detection area 110 covered by other detection coils 11. Therefore, in this embodiment, it can be considered that the receiving end is located in the detection area 110 covered by the detection coil 11 corresponding to the resonance signal with the maximum energy, where the resonance energy of the resonance signal is greater than the energy threshold, and the resonance signal is the resonance signal with the maximum resonance energy among the N resonance signals.

[0124] Thus, in this embodiment, by first determining that the resonant signal has a resonant energy greater than an energy threshold, interference from other possible feedback resonant energies is eliminated, and then the resonant signal with the maximum resonant energy among the N resonant signals is used as the resonant signal that meets the feedback condition, thereby determining the detection area where the detection coil corresponding to the resonant signal with the maximum resonant energy among the N resonant signals is located, and finally determining the position area of ​​the receiving end.

[0125] It should be noted that when the receiving end is at the boundary of two adjacent detection coils, in fact, the detection area where the detection coil corresponding to the receiving end occupies more area is located will be considered as the location area of ​​the receiving end.

[0126] Further, in order to improve the accuracy of the detection result, in other embodiments, the feedback signal includes: an output voltage generated based on the detection signal;

[0127] The processing module is specifically used for:

[0128] If the output voltage reaches the voltage threshold, it is determined that the feedback condition is met.

[0129] It can be understood that when the receiving end is placed in the detection area 110 covered by the currently powered detection coil 11 or close to the detection area 110 covered by the currently powered detection coil 11, the receiving end will generate an output voltage based on the detection signal after receiving the detection signal. Among them, the output voltage here can be the output voltage generated on the receiving coil in the charging circuit of the receiving end, or it can be the output voltage generated by the rectifier bridge in the charging circuit of the receiving end. Usually, the receiving end cannot be charged when the output voltage is low, for example, lower than 2v. If there is a receiving end in the detection area covered by the currently powered detection coil, but only a small part of the receiving end is in the detection area covered by the currently powered detection coil, at this time, if the output voltage generated on the receiving coil in the charging circuit of the receiving end or the output voltage generated by the rectifier bridge in the charging circuit of the receiving end detected may be lower than the voltage threshold, then the detection area covered by the currently powered detection coil cannot be determined as the current area where the receiving end is located. Only when the output voltage reaches the voltage threshold can it be indicated that the detection area covered by the detection coil corresponding to the voltage threshold is the placement area of ​​the receiving end.

[0130] In this embodiment, by judging whether the output voltage reaches the voltage threshold, the erroneous judgment result that only a small part of the receiving end is in the detection area covered by the detection coil and the transmitting coil is in the detection area but cannot charge the receiving end is excluded, thereby making the judged location area of ​​the receiving end more accurate.

[0131] It should be supplemented that the device also includes: a communication module at the transmitting end, connected to the detection coil, for sending the feedback signal of the receiving end to the detection coil. In some embodiments, the output voltage can be detected by the receiving end itself, and then the receiving end sends the detected output voltage to the communication module of the transmitting end through the communication module of the receiving end. In other embodiments, the output voltage can be detected by a third-party device connected to the receiving end, and then the third-party device sends the detected output voltage to the communication module of the transmitting end.

[0132] It should be supplemented that the device further comprises: a driving circuit connected between the processing module and each detection coil, and configured to periodically supply power to the detection coil at a first time interval.

[0133] Here, the first time interval may include: a transmission period of the detection signal.

[0134] Here, the driving circuit further includes: a multi-way switch, wherein each switch is connected to a different detection coil; and the processing module is further used to: periodically control the switch of the current path in the multi-way switch to be turned off according to the second time interval, and control the next switch of the current path to be turned on.

[0135] Here, the second time interval is different from the first time interval, and the second time interval may include: an average time required to detect whether there is a receiving end. In this way, each detection coil can be automatically controlled to perform detection periodically according to the second time interval.

[0136] Of course, in other embodiments, the processing module is also used to: when receiving the feedback signal, control the switch of the current path in the multi-way switch to be closed, and control the next switch of the current path to be turned on. In this way, the detection of the detection area covered by each detection coil can be completed quickly, thereby improving the detection efficiency.

[0137] Specifically, in some implementations, if the feedback signal is the resonance signal described above, the processing module is further configured to:

[0138] determining a resonance energy of the resonance signal;

[0139] When receiving the feedback signal, controlling the switch of the current path in the multi-way switch to be turned off, and controlling the switch of the next path of the current path to be turned on, comprises:

[0140] When the resonance energy of the received resonance signal is greater than the energy threshold, and the resonance energy of the resonance signal detected at the previous moment is greater than the resonance energy detected at the current moment, the switch of the current path in the multi-way switch is controlled to be closed, and the next switch of the current path is controlled to be turned on.

[0141] It should be noted that since the resonant energy of the resonant signal will gradually decay with the discharge time of the resonant circuit at the receiving end, in the embodiment, when the resonant energy begins to decay, there is no need to continue to detect the resonant energy. In this way, if the detection of the next detection coil is entered at this time, there is no need to wait until all the resonant energy of the resonant signal is released before performing the detection of the next detection coil, which saves the detection time of each detection coil and improves the detection efficiency.

[0142] In some other real-time methods, if the feedback signal is the output voltage described above, when the feedback signal is received, the switch of the current path in the multi-way switch is controlled to be closed, and the next switch of the current path is controlled to be turned on, including:

[0143] When the output voltage is received, the switch of the current path in the multi-way switch is controlled to be closed, and the next switch of the current path is controlled to be turned on. In this way, when the output voltage is received, the next switch can be switched on, which can also improve the detection efficiency.

[0144] In some other embodiments, among the M groups of detection coils, each group of detection coils includes N detection coils, and the areas covered by at least two groups of the N detection coils are partially overlapped, wherein M is a positive integer greater than or equal to 2;

[0145] The processing module is also used for:

[0146] According to the detection areas covered by the detection coils that meet the feedback conditions in each group of N detection coils, an intersection area of ​​the detection areas covered by the detection coils that meet the feedback conditions in M ​​groups of N detection coils is determined as the location area of ​​the receiving end.

[0147] Here, the area of ​​the base surface covered by the detection coils can be made larger by using multiple groups of N detection coils, so that more areas can be detected by the receiving end. It should be noted that in order to make the detection areas covered by the detection coils corresponding to the feedback conditions detected by multiple groups of detection coils have intersecting areas, in this embodiment, the areas covered by at least two groups of detection coils are partially overlapped.

[0148] In this embodiment, the detection results of multiple groups of N detection coils are comprehensively considered, so that the obtained location area of ​​the receiving end is more accurate.

[0149] Specifically, see Figure 4 , Figure 4 is another structural schematic diagram of a wireless charging positioning device according to an exemplary embodiment. Figure 4As shown, the device includes M groups of detection coils, and each group of detection coils includes N detection coils.

[0150] In some embodiments, each of the N detection coils has a stacked portion, where the detection coil is a triangle, and the stacked portion is a side of the triangle. As shown in the figure, the stacked portion of the first group of detection coils is located at the position of side 1, the stacked portion of the second group of detection coils is located at the position of side 2, the stacked portion of the third group of detection coils is located at the position of side 3, and so on.

[0151] In some embodiments, please refer to Figure 5 , Figure 5 is another structural schematic diagram of a wireless charging positioning device according to an exemplary embodiment. Figure 5 As shown, taking M as 4 as an example, after detecting four groups of N detection coils, it can be obtained that the receiving end detected in each group of detection coils is within the area covered by which detection coil in the group, that is, the detection area covered by the detection coils corresponding to each group that meets the feedback condition is determined.

[0152] Specifically, the detection area covered by the detection coils that meet the feedback condition detected by the first detection coil 111 is the third detection area 110c; the second detection coil 112 does not detect the detection coils that meet the feedback condition; the detection area covered by the detection coils that meet the feedback condition detected by the third detection coil 113 is the fourth detection area 110d; the detection area covered by the detection coils that meet the feedback condition detected by the fourth detection coil 114 is the fifth detection area 110e. In this way, the intersection area 1101 of the third detection area 110c, the fourth detection area 110d and the fifth detection area 110e can be obtained as the location area of ​​the receiving end.

[0153] Of course, in other implementations, please refer to Figure 6 , Figure 6 is another structural diagram of a receiving end positioning device in wireless charging according to an exemplary embodiment. Figure 6As shown, still taking M as 4 as an example, here, the detection area covered by the detection coils that meet the feedback condition detected by the first group of detection coils 111 is the third detection area 110c; the detection areas covered by the detection coils that meet the feedback condition detected by the second group of detection coils 112 include the sixth detection area 110f and the seventh detection area 110g; the third group of detection coils 113 did not detect any detection coils that meet the feedback condition; the detection area covered by the detection coils that meet the feedback condition detected by the fourth group of detection coils 114 is the fifth detection area 110e. In this way, it can be obtained that the intersection area 1102 of the third detection area 110c, the fifth detection area 110e, the sixth detection area 110f and the seventh detection area 110g is the location area of ​​the receiving end.

[0154] It should be added that, the more groups of the N detection coils there are, that is, the larger the value of M is, the more accurate the detection result will be, and thus, the positioning of the location area of ​​the receiving end will be more accurate.

[0155] In some other embodiments, the processing module is further used for:

[0156] Determine the area where the charging coil of the transmitting end is located; wherein the charging coil is used to transmit a wireless charging signal to provide wireless power to the receiving end;

[0157] According to the location area of ​​the receiving end, it is determined whether the location area of ​​the receiving end overlaps with the area where the charging coil is located.

[0158] Here, whether the location area of ​​the receiving end overlaps with the area where the charging coil is located can be understood as whether the projection areas of the receiving end and the charging coil in the vertical direction overlap. When the projection areas of the receiving end and the charging coil in the vertical direction overlap, it can be shown that the receiving end is aligned with the charging coil; and when the projection areas of the receiving end and the charging coil in the vertical direction do not overlap, it can be shown that the receiving end is not aligned with the charging coil.

[0159] Here, by first determining the location area of ​​the receiving end, it is possible to intelligently determine whether the location area of ​​the receiving end overlaps with the area where the charging coil of the transmitting end is located, so that when the location area of ​​the receiving end does not overlap with the area where the charging coil is located, that is, when the receiving end and the charging coil are not aligned, the relative positions of the two are adjusted in time to ensure that energy loss is reduced and charging efficiency is improved.

[0160] In some embodiments, when the location area of ​​the receiving end does not overlap with the area where the transmitting coil is located, a prompt message is output, wherein the prompt message is used to prompt the user to adjust the location area of ​​the receiving end. The user can adjust the location area of ​​the receiving end in a timely manner according to the prompt message, thereby helping to quickly reduce energy loss and improve charging efficiency.

[0161] In some other implementations, the device further includes: a driving module, the driving module being connected between the transmitting end and the processing module and being used to drive the transmitting end to move;

[0162] The processing module is also used for:

[0163] If the location area of ​​the receiving end does not overlap with the area where the charging coil is located, a control signal is sent to the driving module; wherein the control signal is used to control the driving module to drive the transmitting end to move according to the location area of ​​the receiving end so that the location area of ​​the receiving end overlaps with the area where the charging coil is located.

[0164] Here, the driving module may include a motor.

[0165] The transmitting end may move with the rotation of the motor. In some embodiments, the location area of ​​the receiving end may be reported to the AP, and after the AP obtains the location area of ​​the receiving end, it sends the control signal to move the transmitting end to the location area of ​​the receiving end, so that the receiving end can be aligned with the transmitting end, thereby realizing automatic alignment of the transmitting end and the receiving end, so as to reduce the energy loss of the charging coil and improve the charging efficiency.

[0166] In this embodiment, the processing module sends a control signal to control the driving module to drive the transmitter to move, so that the position area of ​​the receiving end overlaps with the area where the charging coil is located, so that the receiving end automatically aligns with the transmitting end, thereby reducing the energy loss of the charging coil and improving the charging efficiency. And because the position of the receiving end is automatically adjusted, the accuracy of the alignment between the transmitting end and the receiving end and the speed of alignment are improved. Furthermore, while realizing automatic and rapid alignment, this embodiment uses a driving module pair on the transmitting end to drive the movement of the transmitting end, and does not require any structural improvement to the receiving end, thereby not increasing the cost of the receiving end, so that any receiving end can achieve automatic and rapid positioning and automatic and rapid alignment on the transmitting end, thereby improving the charging efficiency while also improving the versatility of the transmitting end.

[0167] Furthermore, in order to further reduce the energy loss of the charging coil and improve the charging efficiency, in some embodiments, the processing module is also used to:

[0168] Determining the center position of the location area of ​​the receiving end;

[0169] The control signal is specifically used to control the driving module to drive the transmitting end to move so that the area where the charging coil is located overlaps with the center position of the location area of ​​the receiving end.

[0170] Here, the center position of the location area of ​​the receiving end may be determined by calculating the center position of the location area of ​​the receiving end based on an interpolation algorithm or a Newton iteration algorithm after the location area of ​​the receiving end is determined.

[0171] In this embodiment, the control signal can control the driving module to drive the transmitting end to move so that the charging coil is overlapped with the center position of the position area of ​​the receiving end, so that the transmitting end can be completely aligned with the center position of the receiving end, further reducing energy loss and further improving charging efficiency.

[0172] It should be supplemented that the cross-section of the detection coil is directly smaller than the cross-section diameter of the charging coil.

[0173] Since the charging coil at the transmitter is mainly used to transmit charging power and needs to carry a large current, generally speaking, the cross-section of the charging coil at the transmitter is directly 2-3mm. On the other hand, since the detection coil does not need to charge the receiving end, it does not need to carry a large current, so thinner wires can be used, usually only a few tenths of a millimeter can be achieved.

[0174] In this way, using a coil with a smaller cross-sectional area as a detection coil can save costs on the one hand, and on the other hand, as mentioned above, since this type of coil will not carry a large current, it will not consume too much electrical energy, wherein the electrical energy provided by the detection coil is only used for detection.

[0175] Furthermore, the present disclosure also provides a specific embodiment to further understand the wireless charging positioning device provided by the embodiment of the present disclosure.

[0176] Here, the receiving end takes a mobile phone as an example.

[0177] In the related art, when a user places a mobile phone on the base of the wireless charging transmitter for wireless charging, the center positions of the mobile phone's receiving coil and charging coil will inevitably be offset, resulting in low charging efficiency and serious energy loss. Currently, many manufacturers have produced mobile phones that support wireless charging to facilitate people to charge wirelessly, but they all rely on manual placement of the mobile phone on the wireless charging base, and then manual movement of the mobile phone to the center of the base of the transmitter, that is, the location of the charging coil, by eye. Currently, there is a lack of effective measures to help users determine the position of the receiving end on the base, and to help users determine whether the receiving end is aligned with the transmitting end.

[0178] Therefore, it is necessary to provide a technical solution that can automatically locate the position of the receiving end, and then align the receiving end with the transmitting end based on the position of the receiving end, so as to improve the chargeable area and charging efficiency of wireless charging.

[0179] Here, please continue to read Figure 4 In this embodiment, the wireless charging positioning device includes: N detection coils, the detection coils are triangular, and the detection coils formed by each triangle are independent of each other. Furthermore, one side of each group of detection coils is stacked, so that the stacked side can be used as a reference side, and each detection coil can be energized accordingly, and the position of the receiving end can be detected. It should be added that the N detection coils are deployed below the base 10 of the transmitting end.

[0180] Specifically, the detection coil transmits a detection signal and receives a feedback signal, thereby determining the detection area covered by the detection coil corresponding to the feedback condition, and finally determining which detection coil in the group of detection coils the receiving end is within the detection area.

[0181] Here, please refer to Figure 3 , the detection signal may be a pulse signal, and the feedback signal may be a resonance signal detected from the receiving end and fed back during the gap between two adjacent pulses in the pulse signal. According to the resonance energy of the resonance signal being greater than an energy threshold and the resonance signal being a resonance signal with the maximum resonance energy among N resonance signals, it is determined that the feedback condition is satisfied, thereby determining the location area of ​​the receiving end.

[0182] Of course, in other implementations, the feedback signal may also be: the output voltage generated by the receiving end based on the detection signal; if the output voltage reaches a voltage threshold, it is determined that the feedback condition is met, thereby determining the location area of ​​the receiving end.

[0183] Further, in order to improve the accuracy of the determined location area of ​​the receiving end, in other embodiments, please refer to Figure 4 , Figure 5 and Figure 6 M groups of detection coils are arranged under the base 10, and each group of detection coils includes N detection coils.

[0184] First, with edge 1 as the reference edge, the first group of detection coils 111 are energized in turn, so as to detect the detection area covered by the detection coils in the first group of detection coils 111 that meet the feedback condition; then, with edge 2 as the reference edge, the second group of detection coils 112 are energized in turn, so as to detect the detection area covered by the detection coils in the second group of detection coils 112 that meet the feedback condition, and so on. Finally, according to the detection area covered by each group of detection coils that meet the feedback condition, the intersection area of ​​the detection area covered by each group of detection coils that meet the feedback condition is determined as the position area of ​​the receiving end.

[0185] It should be noted that, usually, detection of 4 groups of N detection coils can relatively accurately locate the location area of ​​the receiving end. Of course, in order to locate the location area of ​​the receiving end more accurately, detection of more groups of N detection coils can be performed.

[0186] Furthermore, the processing module can also be used to: determine the area where the charging coil of the transmitting end is located, wherein the charging coil is used to transmit a wireless charging signal to provide wireless power to the receiving end; and determine whether the location area of ​​the receiving end overlaps with the area where the charging coil is located according to the location area of ​​the receiving end, thereby automatically determining whether the receiving end is aligned with the transmitting end.

[0187] Furthermore, the device further comprises: a driving module, wherein the driving module is connected between the transmitting end and the processing module and is used for driving the transmitting end to move.

[0188] In this embodiment, after the location area of ​​the receiving end is determined, the determined location area of ​​the receiving end can be reported to the AP. After the AP obtains the location area of ​​the receiving end, it sends a control signal to the driving module, wherein the control signal can drive the transmitting end to move so that the area where the charging coil is located overlaps with the location area of ​​the receiving end. This achieves the technical effect of automatically aligning the receiving end with the transmitting end to improve the charging efficiency.

[0189] Of course, in order to further improve the charging efficiency, here, after determining the location area of ​​the receiving end, the center position of the location area of ​​the receiving end will be further determined, and then the transmitting end will be driven to move so that the area where the charging coil is located overlaps with the center position of the location area of ​​the receiving end, so that the receiving end and the transmitting end can be fully aligned to further reduce energy loss and further improve charging efficiency.

[0190] In this embodiment, the position area of ​​the receiving end can be quickly located by deploying M groups of detection coils below the surface of the base, each group of detection coils including N detection coils, and the transmitting end can be driven to move by the control signal sent by the driving module, so that the area where the charging coil is located overlaps with the center position of the position area of ​​the receiving end, so that the receiving end and the transmitting end can be automatically and quickly aligned, thereby reducing energy loss and improving charging efficiency. And there is no need to make any structural improvements to the receiving end, so that the transmitting end can wirelessly charge any receiving end, thereby improving the versatility of the transmitting end.

[0191] Figure 7 is a flow chart of a wireless charging positioning method according to an exemplary embodiment. Figure 7 As shown, the method is applied to the transmitting end described above, including:

[0192] Step 701: using at least one group of detection coils preset in the transmitting end to transmit a detection signal, and receiving a feedback signal sent by the receiving end, wherein each group of detection coils includes N detection coils, N is a positive integer greater than or equal to 2, and detection areas covered by different detection coils are at least partially different;

[0193] Step 702: Determine the location area of ​​the receiving end on the transmitting end according to the feedback signals received by the N detection coils.

[0194] In this embodiment, compared with the related art that requires human eye observation to locate the position of the receiving end, the detection signals emitted by multiple detection coils and the received feedback signals can automatically locate the detection area covered by which detection coil the receiving end is in, thereby automatically locating the position area of ​​the receiving end, and the position area of ​​the receiving end located in this way is more accurate than the position area of ​​the receiving end located by human eye observation.

[0195] In an alternative embodiment, see Figure 8 , Figure 8 is another flow chart of a method for positioning a receiving end in wireless charging according to an exemplary embodiment. Figure 8As shown, the step 702, i.e., determining the location area of ​​the receiving end on the transmitting end according to the feedback signals received by the N detection coils, includes:

[0196] Determining whether a feedback condition is met based on a corresponding feedback signal received by each of the detection coils;

[0197] Determine a detection area covered by the detection coil corresponding to the feedback condition;

[0198] The location area of ​​the receiving end is determined according to the detection area covered by the detection coil corresponding to the feedback condition.

[0199] In this embodiment, by using whether the feedback signal satisfies the feedback condition as a basis for determining whether the receiving end is in the detection area covered by the corresponding detection coil, the interference of the feedback signal received due to the receiving end not being the receiving end can be at least eliminated. In other words, the corresponding feedback signal of the receiving end of the detection coil can only be considered as the feedback signal fed back by the receiving end if it satisfies the feedback condition, otherwise it is an interference signal. This further improves the accuracy of detecting the location area of ​​the receiving end.

[0200] In an optional embodiment, the detection signal is a pulse signal, and the feedback signal includes: a resonance signal fed back during a gap between two adjacent pulses in the pulse signal;

[0201] The method further comprises:

[0202] If the resonance energy of the resonance signal is greater than the energy threshold, and the resonance signal is the resonance signal with the maximum resonance energy among the N resonance information, it is determined that the feedback condition is met.

[0203] In an optional embodiment, the feedback signal includes: an output voltage generated based on the detection signal;

[0204] The method further comprises:

[0205] If the output voltage reaches the voltage threshold, it is determined that the feedback condition is met.

[0206] In an optional embodiment, if there are M groups of detection coils, each group of detection coils includes N detection coils, and the areas covered by at least two groups of the N detection coils are partially overlapped, wherein M is a positive integer greater than or equal to 2;

[0207] The determining the location area of ​​the receiving end according to the detection area covered by the detection coil corresponding to the feedback condition, comprises:

[0208] According to the detection areas covered by the detection coils that meet the feedback conditions in each group of N detection coils, an intersection area of ​​the detection areas covered by the detection coils that meet the feedback conditions in M ​​groups of N detection coils is determined as the location area of ​​the receiving end.

[0209] In this embodiment, the detection results of multiple groups of N detection coils are comprehensively considered, so that the obtained location area of ​​the receiving end is more accurate.

[0210] In an optional embodiment, the method further includes:

[0211] Determine an area where a charging coil of the transmitting end is located, wherein the charging coil is used to transmit a wireless charging signal to provide wireless power to the receiving end;

[0212] According to the location area of ​​the receiving end, it is determined whether the location area of ​​the receiving end overlaps with the area where the charging coil is located.

[0213] In this embodiment, by accurately locating the position area of ​​the receiving end, the relative position relationship between the receiving end and the charging coil can be accurately determined, so that the relative position of the receiving end and the transmitting end can be adjusted in time, ultimately ensuring the reduction of energy consumption loss, thereby reducing the energy loss of wireless charging and improving the charging efficiency.

[0214] In an optional embodiment, the method further includes:

[0215] If the receiving end is not overlapped with the area where the charging coil is located, a control signal is sent to drive the transmitting end to move so that the location area of ​​the receiving end overlaps with the area where the charging coil is located.

[0216] In this embodiment, the processing module sends a control signal to control the driving module to drive the transmitter to move, so that the position area of ​​the receiving end overlaps with the area where the charging coil is located, so that the receiving end automatically aligns with the transmitting end, thereby reducing the energy loss of the transmitting end and improving the charging efficiency. And because the position of the receiving end is automatically adjusted, the accuracy of the alignment between the transmitting end and the receiving end and the speed of alignment are improved. Furthermore, while achieving automatic and rapid alignment, this embodiment utilizes the driving module connected to the transmitting end to move the transmitting end, so there is no need to make any structural improvements to the receiving end, thereby not increasing the cost of the receiving end, so that any receiving end can be automatically and quickly positioned and automatically and quickly aligned on the transmitting end, thereby improving the charging efficiency while also improving the versatility of the transmitting end.

[0217] In an optional embodiment, the method further includes:

[0218] Determining the center position of the location area of ​​the receiving end;

[0219] The sending of a control signal to drive the transmitting end to move includes:

[0220] The control signal is sent to drive the transmitting end to move so that the area where the charging coil is located overlaps with the center position of the location area of ​​the receiving end.

[0221] In this embodiment, the control signal can control the driving module to drive the transmitting end to move to the center position of the position area of ​​the receiving end, so that the transmitting end can be completely aligned with the center position of the receiving end, further reducing energy loss and further improving charging efficiency.

[0222] The specific manner of the method in the above embodiment has been described in detail in the embodiment of the receiving end positioning device in the wireless charging, and will not be elaborated here.

[0223] Fig. 9 FIG. 1 is a block diagram of a wireless charging positioning device according to an exemplary embodiment. Fig. 9 , the device comprises: a transmitting module 91 and a first determining module 92;

[0224] The transmitting module 91 is configured to transmit a detection signal and receive a feedback signal sent by the receiving end using at least one group of detection coils preset in the transmitting end, wherein each group of detection coils includes N, and N is a positive integer greater than or equal to 2, and the detection areas covered by different detection coils are at least partially different;

[0225] The first determination module 92 is configured to determine a location area of ​​the receiving end on the transmitting end according to the feedback signals received by the N detection coils.

[0226] In some optional embodiments, the first determining module 92 is specifically configured to:

[0227] Determining whether a feedback condition is met based on the feedback signal received by each of the detection coils;

[0228] Determine a detection area covered by the detection coil corresponding to the feedback condition;

[0229] The location area of ​​the receiving end is determined according to the detection area covered by the detection coil corresponding to the feedback condition.

[0230] In some optional embodiments, the detection signal is a pulse signal, and the feedback signal includes: a resonance signal transmitted during a gap between two adjacent pulses in the pulse signal;

[0231] The device also includes:

[0232] The second determination module is configured to determine that the feedback condition is satisfied if the resonance energy of the resonance signal is greater than an energy threshold and the resonance signal is a resonance signal with the maximum resonance energy among the N resonance information.

[0233] In some optional embodiments, the feedback signal includes: an output voltage generated based on the detection signal;

[0234] The device also includes:

[0235] The third determination module is configured to determine that the feedback condition is satisfied if the output voltage reaches a voltage threshold.

[0236] In some optional embodiments, if there are M groups of detection coils, each group of detection coils includes N detection coils, and the areas covered by at least two groups of the N detection coils are partially overlapped, wherein M is a positive integer greater than or equal to 2;

[0237] The first determining module is further configured to:

[0238] According to the detection areas covered by the detection coils that meet the feedback conditions in each group of N detection coils, an intersection area of ​​the detection areas covered by the detection coils that meet the feedback conditions in M ​​groups of N detection coils is determined as the location area of ​​the receiving end.

[0239] In some optional embodiments, the device further comprises:

[0240] The fourth determination module is configured to determine the area where the charging coil of the transmitting end is located, wherein the charging coil is used to transmit a wireless charging signal to provide wireless power to the receiving end; and determine whether the location area of ​​the receiving end overlaps with the area where the charging coil is located based on the location area of ​​the receiving end.

[0241] In some optional embodiments, the device further comprises:

[0242] The sending module is configured to send a control signal to drive the transmitting end to move if the location area of ​​the receiving end does not overlap with the area where the charging coil is located, so that the location area of ​​the receiving end overlaps with the area where the charging coil is located.

[0243] In some optional embodiments, the device further comprises:

[0244] A fifth determination module is configured to determine a center position of the location area of ​​the receiving end;

[0245] The sending module is further configured as follows:

[0246] The control signal is sent to drive the transmitting end to move so that the area where the charging coil is located overlaps with the center position of the location area of ​​the receiving end.

[0247] Regarding the device in the above embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment of the receiving end positioning device in wireless charging, and will not be elaborated here.

[0248] Fig.10 1 is a block diagram of a transmitter 1000 according to an exemplary embodiment, wherein the transmitter 1000 is equipped with the wireless charging positioning device described above. For example, the transmitter 1000 may be a mobile phone, a computer, a digital broadcast transmitter, a message transceiver, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, etc.

[0249] Reference Fig.10 The transmitter 1000 may include one or more of the following components: a processing component 1002 , a memory 1004 , a power component 1006 , a multimedia component 1008 , an audio component 1010 , an input / output (I / O) interface 1012 , a sensor component 1014 , and a communication component 1016 .

[0250] The processing component 1002 generally controls the overall operation of the transmitter 1000, such as operations associated with display, phone calls, data communications, camera operations, and recording operations. The processing component 1002 may include one or more processors 420 to execute instructions to complete all or part of the steps of the above-mentioned method. In addition, the processing component 1002 may include one or more modules to facilitate the interaction between the processing component 1002 and other components. For example, the processing component 1002 may include a multimedia module to facilitate the interaction between the multimedia component 1008 and the processing component 1002.

[0251] The memory 1004 is configured to store various types of data to support operations at the transmitter 1000. Examples of such data include instructions for any application or method operating on the transmitter 1000, contact data, phone book data, messages, pictures, videos, etc. The memory 1004 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk.

[0252] The power component 1006 provides power to various components of the transmitter 1000. The power component 1006 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the transmitter 1000.

[0253] The multimedia component 1008 includes a screen that provides an output interface between the transmitting end 1000 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundaries of the touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 1008 includes a front camera and / or a rear camera. When the transmitting end 1000 is in an operating mode, such as a shooting mode or a video mode, the front camera and / or the rear camera may receive external multimedia data. Each front camera and the rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.

[0254] The audio component 1010 is configured to output and / or input audio signals. For example, the audio component 1010 includes a microphone (MIC), and when the transmitter 1000 is in an operation mode, such as a call mode, a recording mode, and a speech recognition mode, the microphone is configured to receive an external audio signal. The received audio signal can be further stored in the memory 1004 or sent via the communication component 1016. In some embodiments, the audio component 1010 also includes a speaker for outputting audio signals.

[0255] I / O interface 1012 provides an interface between processing component 1002 and peripheral interface modules, such as keyboards, click wheels, buttons, etc. These buttons may include but are not limited to: home button, volume button, start button, and lock button.

[0256] The sensor assembly 1014 includes one or more sensors for providing various aspects of status assessment for the transmitter 1000. For example, the sensor assembly 1014 can detect the on / off state of the transmitter 1000, the relative positioning of components, such as the display and keypad of the transmitter 1000, and the sensor assembly 1014 can also detect the position change of the transmitter 1000 or a component of the transmitter 1000, the presence or absence of contact between the user and the transmitter 1000, the orientation or acceleration / deceleration of the transmitter 1000, and the temperature change of the transmitter 1000. The sensor assembly 1014 may include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor assembly 1014 may also include an optical sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 1014 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0257] The communication component 1016 is configured to facilitate wired or wireless communication between the transmitter 1000 and other devices. The transmitter 1000 can access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 1016 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 616 also includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.

[0258] In an exemplary embodiment, the transmitter 1000 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to perform the above method.

[0259] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 1004 including instructions, and the instructions can be executed by the processor 1020 of the transmitting end 1000 to complete the above method. For example, the non-transitory computer-readable storage medium can be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, etc.

[0260] A non-temporary computer-readable storage medium, when the instructions in the storage medium are executed by a processor of a transmitting end, enables the transmitting end to execute the page display adjustment method described in the above embodiments.

[0261] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art that are not disclosed in this disclosure. The specification and examples are to be considered exemplary only, and the true scope and spirit of the present invention are indicated by the following claims.

[0262] It should be understood that the present invention is not limited to the exact construction that has been described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A wireless charging positioning device, applied to a transmitting end, characterized in that: include: At least one group of detection coils, each group of detection coils includes N detection coils, and detection areas covered by different detection coils are at least partially different; The detection coil is used to transmit a detection signal and receive a feedback signal sent by a receiving end, wherein N is a positive integer greater than or equal to 2; the detection coil is a polygon, wherein the portion stacked between the at least two detection coils is one side or multiple sides of the polygon; A processing module, connected to the N detection coils, and configured to determine a location area of ​​the receiving end on the transmitting end according to the feedback signals received by the N detection coils; The processing module is further used to: determine whether a feedback condition is met based on the feedback signal received by each of the detection coils; determine the detection area covered by the detection coils corresponding to the feedback condition; and determine the location area of ​​the receiving end according to the detection area covered by the detection coils corresponding to the feedback condition. Among them, the feedback signal is a pulse signal, and the feedback signal includes: a resonance signal sent during the gap between two adjacent pulses in the pulse signal; the processing module is specifically used to: if the resonance energy of the resonance signal is greater than an energy threshold, and the resonance signal is a resonance signal with the maximum resonance energy among N resonance information, then determine that the feedback condition is met.

2. The device according to claim 1, characterized in that At least two of the detection coils are partially stacked.

3. The device according to claim 1, characterized in that Among the M groups of detection coils, the areas covered by at least two groups of the N detection coils are partially overlapped, wherein M is a positive integer greater than or equal to 2; The processing module is also used for: According to the detection areas covered by the detection coils that meet the feedback conditions in each group of N detection coils, an intersection area of ​​the detection areas covered by the detection coils that meet the feedback conditions in M ​​groups of N detection coils is determined as the location area of ​​the receiving end.

4. The device according to claim 1, characterized in that The N detection coils are located within a preset range of the base of the transmitting end.

5. The device according to claim 4, characterized in that The processing module is also used for: Determine the area where the charging coil of the transmitting end is located; wherein the charging coil is used to transmit a wireless charging signal to provide wireless power to the receiving end; According to the location area of ​​the receiving end, it is determined whether the location area of ​​the receiving end overlaps with the area where the charging coil is located.

6. The device according to claim 5, characterized in that The device further includes: a driving module, the driving module being connected between the transmitting end and the processing module and being used to drive the transmitting end to move; The processing module is also used for: If the location area of ​​the receiving end does not overlap with the area where the charging coil is located, a control signal is sent to the driving module; wherein the control signal is used to control the driving module to drive the transmitting end to move according to the location area of ​​the receiving end so that the location area of ​​the receiving end overlaps with the area where the charging coil is located.

7. The device according to claim 6, characterized in that The processing module is also used for: Determining the center position of the location area of ​​the receiving end; The control signal is specifically used to control the driving module to drive the transmitting end to move so that the area where the charging coil is located overlaps with the center position of the location area of ​​the receiving end.

8. The device according to any one of claims 5 to 7, characterized in that The cross-sectional diameter of the detection coil is smaller than the cross-sectional diameter of the charging coil.

9. A wireless charging positioning method, applied to a transmitter, characterized in that: include: Utilize at least one group of detection coils preset in the transmitting end to transmit a detection signal, and receive a feedback signal sent by the receiving end, wherein each group of detection coils includes N detection coils, N is a positive integer greater than or equal to 2, and detection areas covered by different detection coils are at least partially different; Determine the location area of ​​the receiving end on the transmitting end according to the feedback signals received by the N detection coils; wherein, determining the location area of ​​the receiving end on the transmitting end according to the feedback signals received by the N detection coils comprises: determining whether a feedback condition is met based on the feedback signals received by each of the detection coils; determining the detection area covered by the detection coil corresponding to the feedback condition being met; and determining the location area of ​​the receiving end according to the detection area covered by the detection coil corresponding to the feedback condition being met; The detection signal is a pulse signal, and the feedback signal includes: a resonance signal sent during the gap between two adjacent pulses in the pulse signal; the method also includes: if the resonance energy of the resonance signal is greater than an energy threshold, and the resonance signal is a resonance signal with the maximum resonance energy among N resonance information, then it is determined that the feedback condition is met.

10. The method according to claim 9, characterized in that The feedback signal includes: an output voltage generated based on the detection signal; The method further comprises: If the output voltage reaches the voltage threshold, it is determined that the feedback condition is met.

11. The method according to claim 9, characterized in that If there are M groups of detection coils, each group of detection coils includes N detection coils, and the areas covered by at least two groups of the N detection coils are partially overlapped, wherein M is a positive integer greater than or equal to 2; The determining the location area of ​​the receiving end according to the detection area covered by the detection coil corresponding to the feedback condition, comprises: According to the detection areas covered by the detection coils that meet the feedback conditions in each group of N detection coils, an intersection area of ​​the detection areas covered by the detection coils that meet the feedback conditions in M ​​groups of N detection coils is determined as the location area of ​​the receiving end.

12. The method according to claim 9, characterized in that The method further comprises: Determine an area where a charging coil of the transmitting end is located, wherein the charging coil is used to transmit a wireless charging signal to provide wireless power to the receiving end; According to the location area of ​​the receiving end, it is determined whether the location area of ​​the receiving end overlaps with the area where the charging coil is located.

13. The method according to claim 12, characterized in that The method further comprises: If the location area of ​​the receiving end does not overlap with the area where the charging coil is located, a control signal is sent to drive the transmitting end to move so that the location area of ​​the receiving end overlaps with the area where the charging coil is located.

14. The method according to claim 13, characterized in that The method further comprises: Determining the center position of the location area of ​​the receiving end; The sending of a control signal to drive the transmitting end to move includes: The control signal is sent to drive the transmitting end to move so that the area where the charging coil is located overlaps with the center position of the location area of ​​the receiving end.

15. A wireless charging positioning device, applied to a transmitting end, characterized in that: include: processor; a memory for storing processor-executable instructions; The processor is configured to: implement the steps of the method described in any one of claims 9 to 14 when executed.

16. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that: The program is executed by a processor to implement the steps of the method according to any one of claims 9 to 14.

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