Wireless charging stand and control method, control device and electronic device thereof

Abstract

The present application discloses a wireless charging stand and its control method, control device and electronic device. The wireless charging stand includes: an input circuit; a coil module, including a first charging coil and a second charging coil, for sending an energy signal to a receiving coil of an electronic device and receiving a response signal corresponding to the energy signal; a first switch module, connected between the input circuit and the coil module, for connecting the first charging coil and the input circuit, or connecting the second charging coil and the input circuit; the wireless charging stand determines the location information of the electronic device according to the response signal, determines the target coil in the first charging coil and the second charging coil according to the location information, and wirelessly charges the electronic device through the target coil.

Description

Technical Field

[0001] The present application belongs to the field of wireless charging technology, and specifically relates to a wireless charging stand and a control method, a control device and an electronic device thereof. Background Art

[0002] In related technologies, wireless charging is based on the principle of magnetic induction and uses the near-field coupling of the magnetic field between the charging transmitting coil and the receiving coil to transmit energy. Once the transmitting coil and the receiving coil are not aligned accurately, the energy transmission efficiency will decrease, resulting in a decrease in charging efficiency and affecting the charging experience. Summary of the invention

[0003] The present application aims to provide a wireless charging stand and a control method, a control device and an electronic device thereof, which can improve the efficiency of wireless charging and ensure the charging experience.

[0004] To this end, an embodiment of the first aspect of the present application proposes a wireless charging stand, comprising:

[0005] Input circuit;

[0006] The coil module includes a first charging coil and a second charging coil, and is used to send an energy signal to a receiving coil of the electronic device and receive a response signal corresponding to the energy signal;

[0007] A first switch module is connected between the input circuit and the coil module, and is used to connect the first charging coil and the input circuit, or connect the second charging coil and the input circuit;

[0008] The wireless charging seat determines the location information of the electronic device according to the response signal, determines the target coil in the first charging coil and the second charging coil according to the location information, and wirelessly charges the electronic device through the target coil.

[0009] The embodiment of the second aspect of the present application provides a wireless charging method for controlling the wireless charging stand provided in the first aspect, the method comprising:

[0010] Control the coil module of the wireless charging station to transmit energy signals;

[0011] receiving a response signal corresponding to the energy signal, and determining the location information of the electronic device according to the response signal;

[0012] According to the position information, a target coil is determined among the first charging coil and the second charging coil of the wireless charging seat, and the electronic device is wirelessly charged through the target coil.

[0013] The embodiment of the third aspect of the present application provides a wireless charging device for controlling the wireless charging stand provided in the first aspect, and the wireless charging device includes:

[0014] A first control module, used to control the coil module of the wireless charging station to transmit an energy signal;

[0015] The first determination module is used to receive a response signal corresponding to the energy signal, determine the location information of the electronic device according to the response signal; determine the target coil in the first charging coil and the second charging coil of the wireless charging seat according to the location information, and wirelessly charge the electronic device through the target coil.

[0016] The first control module is further used to control the first charging coil of the wireless charging stand to send an energy signal within a first preset time length; if no response signal corresponding to the first energy signal is received within the first preset time length, control the wireless charging stand to control the second charging coil to send an energy signal within the first preset time length after delaying for a second preset time length;

[0017] The first determination module is also used to determine the target signal in the first energy signal and the second energy signal according to the response signal when a response signal is received; and determine the location information of the electronic device according to the position of the charging coil corresponding to the target signal.

[0018] The first determination module is further used to determine, according to the position information, a target coil in the first charging coil and the second charging coil that matches the position of the position information.

[0019] The fourth aspect of the present application provides an electronic device, including:

[0020] Rectification circuit;

[0021] A receiving coil, used for receiving an energy signal;

[0022] A third capacitor and a fourth capacitor, wherein the third capacitor and the fourth capacitor are connected between the rectifier circuit and the receiving coil;

[0023] A second switch module is connected to the rectifier circuit. The second switch module connects the rectifier circuit, the third capacitor and the receiving coil, or connects the rectifier circuit, the third capacitor and the receiving coil according to the resonant frequency of the energy signal;

[0024] Among them, the electronic device sends a response signal to the wireless charging stand according to the signal strength of the received energy signal, wherein the response signal corresponds to the energy signal with the strongest signal strength.

[0025] The embodiment of the fifth aspect of the present application provides a wireless charging method for the electronic device provided in the fourth aspect, wherein the method comprises:

[0026] Receive energy signals sent by the wireless charging station;

[0027] Determine a target energy signal among the N energy signals according to the signal strengths of the N received energy signals, wherein the signal strength of the target energy signal is the highest;

[0028] A response signal corresponding to the target energy signal is generated, and the response signal is sent to the wireless charging stand.

[0029] The embodiment of the sixth aspect of the present application provides a wireless charging device for the electronic device provided in the fourth aspect, wherein the wireless charging device includes:

[0030] A receiving module, used for receiving an energy signal sent by the wireless charging station;

[0031] A second determination module is used to determine a target energy signal among the N energy signals according to the signal strengths of the received N energy signals, wherein the signal strength of the target energy signal is the highest;

[0032] The sending module is used to generate a response signal corresponding to the target energy signal and send the response signal to the wireless charging stand.

[0033] The wireless charging device also includes: a second control module, used to control the electronic device to receive the energy signal at the first self-resonant frequency; and also used to perform wireless charging at the first self-resonant frequency when the energy signal is received within a third preset time period;

[0034] It is also used to control the electronic device to adjust the self-resonance frequency and receive the energy signal at the adjusted second self-resonance frequency when no energy signal is received within a third preset time period.

[0035] The embodiment of the seventh aspect of the present application proposes a readable storage medium, which stores programs or instructions. When the program or instructions are executed by a processor, the steps of the method provided in the second aspect or the fifth aspect are implemented.

[0036] In an embodiment of the present application, the coil module of the wireless charging stand includes a first charging coil and a second charging coil, and also includes a first switch module. The first switch module is used to switch the connection state between the input circuit and the first charging coil and the second charging coil.

[0037] Specifically, the wireless charging stand sends energy signals to the electronic device being charged through the coil module, and receives a response signal returned by the electronic device based on the strength of the energy signal. Specifically, based on the different placement positions of the electronic device on the wireless charging stand, the distance between it and the first charging coil and the second charging coil is also different. It can be understood that the first charging coil and the second charging coil send energy signals to the electronic device at the same transmission power, and these energy signals will attenuate as the distance increases.

[0038] Therefore, the stronger the energy signal received by the electronic device, the closer the electronic device is to the coil that sends the energy signal. Therefore, the electronic device returns a response signal corresponding to the stronger energy signal to the wireless charging stand. At this time, after receiving the response signal, the wireless charging stand determines the target coil closer to the electronic device in the first charging coil and the second charging coil according to the response signal, and charges the electronic device through the target coil, which can effectively improve the energy transfer efficiency, thereby improving the charging efficiency of wireless charging and speeding up the charging speed on the one hand, and reducing energy loss on the other hand, thereby effectively improving the user experience of wireless charging.

[0039] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0041] Figure 1 One of the structural schematic diagrams of the wireless charging stand according to an embodiment of the present application is shown;

[0042] Figure 2 A second structural schematic diagram of a wireless charging stand according to an embodiment of the present application is shown;

[0043] Figure 3 One of the flow charts of the wireless charging method according to an embodiment of the present application is shown;

[0044] Figure 4 One of the structural block diagrams of a wireless charging device according to an embodiment of the present application is shown;

[0045] Figure 5 A schematic diagram of the structure of an electronic device according to an embodiment of the present application is shown;

[0046] Figure 6 A second flowchart of the wireless charging method according to an embodiment of the present application is shown;

[0047] Figure 7 A second structural block diagram of a wireless charging device according to an embodiment of the present application is shown.

[0048] Reference numerals:

[0049] 100 wireless charging stand, 102 input circuit, 104 coil module, 1042 first charging coil, 1044 second charging coil, 1046 first capacitor, 1048 second capacitor, 106 first switch module, 1062 first switch, 1064 second switch, 108 first controller;

[0050] 200 electronic device, 202 rectifier circuit, 204 receiving coil, 205 third capacitor, 206 fourth capacitor, 208 second switch module, 2082 third switch device, 2084 fourth switch device, 210 energy storage component, 212 second controller. DETAILED DESCRIPTION

[0051] The embodiments of the present application will be described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and should not be construed as limitations on the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0052] The term "first" or "second" in the specification and claims of this application may include one or more of the features explicitly or implicitly. In the description of this application, unless otherwise specified, "plurality" means two or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally means that the objects connected before and after are in an "or" relationship.

[0053] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0054] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0055] Combine the following Figures 1 to 7 A wireless charging stand and a control method, a control device and an electronic device thereof according to an embodiment of the present application are described.

[0056] In some embodiments of the present application, a wireless charging stand is provided. Figure 1 One of the structural schematic diagrams of the wireless charging stand according to an embodiment of the present application is shown. Figure 2 The second structural schematic diagram of the wireless charging stand according to the embodiment of the present application is shown. Figure 1 and Figure 2 As shown, the wireless charging stand 100 includes:

[0057] Input circuit 102;

[0058] The coil module 104 includes a first charging coil 1042 and a second charging coil 1044, which are used to send an energy signal to a receiving coil of an electronic device and receive a response signal corresponding to the energy signal;

[0059] The first switch module 106 is connected between the input circuit 102 and the coil module 104, and is used to connect the first charging coil 1042 and the input circuit, or connect the second charging coil 1044 and the input circuit;

[0060] The wireless charging station 100 determines the location information of the electronic device according to the response signal, determines the target coil in the first charging coil 1042 and the second charging coil 1044 according to the location information, and wirelessly charges the electronic device through the target coil.

[0061] In the embodiment of the present application, the wireless charging stand 100 includes an input circuit 102, a coil module 104 and a first switch module 106. The input circuit 102 can convert the DC signal output by the travel charger into an AC signal, and input the AC signal into the coil module 104. The AC signal can cause the coil of the coil module 104 to generate an electromagnetic field. The receiving coil of the electronic device within the radiation range of the electromagnetic field can couple with the coil module 104 through the electromagnetic field, thereby transmitting energy, so that the electronic device can be wirelessly charged.

[0062] The coil module 104 includes a first charging coil 1042 and a second charging coil 1044 . It is understandable that the number of the first charging coil 1042 and the number of the second charging coil 1044 can be one or more, so that the energy radiation range of the coil module 104 covers the wireless charging stand.

[0063] The coil module of the wireless charging station includes a first charging coil and a second charging coil, and also includes a first switch module. The first switch module is used to switch the connection state between the input circuit and the first charging coil and the second charging coil.

[0064] Specifically, the wireless charging stand sends energy signals to the electronic device being charged through the coil module, and receives a response signal returned by the electronic device based on the strength of the energy signal. Specifically, based on the different placement positions of the electronic device on the wireless charging stand, the distance between it and the first charging coil and the second charging coil is also different. It can be understood that the first charging coil and the second charging coil send energy signals to the electronic device at the same transmission power, and these energy signals will attenuate as the distance increases.

[0065] Therefore, the stronger the energy signal received by the electronic device, the closer the electronic device is to the coil that sends the energy signal. Therefore, the electronic device returns a response signal corresponding to the stronger energy signal to the wireless charging stand. At this time, after receiving the response signal, the wireless charging stand determines the target coil closer to the electronic device in the first charging coil and the second charging coil according to the response signal, and charges the electronic device through the target coil, which can effectively improve the energy transfer efficiency, thereby improving the charging efficiency of wireless charging and speeding up the charging speed on the one hand, and reducing energy loss on the other hand, thereby effectively improving the user experience of wireless charging.

[0066] Specifically, the first charging coil 1042 and the second charging coil 1044 have different self-resonance frequencies. It is assumed that the self-resonance frequency of the first charging coil 1042 is F1 and the self-resonance frequency of the second charging coil is F2.

[0067] When the wireless charging stand 100 detects that an electronic device is placed on the charging panel of the wireless charging stand 100, the first charging coil 1042 is first controlled to transmit an energy signal S1 according to the self-resonant frequency F1, and the transmission continues for a duration of T1. If a response signal corresponding to the energy signal S1 is received within the duration of T1, the first charging coil 1042 is determined as the target coil, and the electronic device is wirelessly charged through the coil.

[0068] If no response signal of the energy signal S1 is received within the time period T1, the second charging coil 1044 is controlled to transmit the energy signal S2 according to the self-resonant frequency F2 and lasts for the time period T2. If a response signal corresponding to the energy signal S2 is received within the time period T2, the second charging coil 1044 is determined as the target coil, and the electronic device is wirelessly charged through the coil.

[0069] It can be understood that the charged electronic device will determine whether to return a response signal based on the signal strength of the received energy signal. If the energy signal S1 is greater than the preset strength threshold, the electronic device will return a response signal within the T1 time period. If the energy signal S1 is less than the strength threshold, it will continue to wait for the energy signal S2, select the one with a stronger signal strength between the energy signal S1 and the energy signal S2, and return a response signal corresponding to the energy signal with a stronger energy strength. Therefore, during wireless charging, a more efficient coil can always be started for wireless charging. On the one hand, energy loss is reduced and energy utilization is improved. On the other hand, the efficiency of wireless charging is improved and the charging speed is increased, thereby effectively improving the user experience of wireless charging.

[0070] In some embodiments of the present application, Figure 2 As shown, the wireless charging station also includes:

[0071] The capacitor module includes a first capacitor 1046 and a second capacitor 1048 . The first capacitor 1046 is connected in series with the first charging coil 1042 , and the second capacitor 1048 is connected in series with the second charging coil 1044 . The first capacitor 1046 and the second capacitor 1048 have different capacitance values.

[0072] In the embodiment of the present application, the capacitor module includes a first capacitor 1046 connected in series with the first charging coil 1042, and a second capacitor 1048 connected in series with the second charging coil 1044. The capacitance of the first capacitor 1046 and the second capacitor 1048 are different, so the first charging coil 1042 and the first capacitor 1046 can form a self-resonant frequency F1, and the second charging coil 1044 and the second capacitor 1048 can form a self-resonant frequency F2, so that energy signals can be transmitted to the electronic device through different self-resonant frequencies, and the received response signals can be distinguished according to different self-resonant frequencies, so as to determine the target coil.

[0073] It can be understood that the inductance values ​​of the first charging coil 1042 and the second charging coil 1044 can be the same, or the difference between the inductance values ​​of the two can be less than the error threshold, so that the multiple coils arranged in the wireless charging stand 100 have the same or highly similar electrical parameters and physical parameters, which facilitates production and assembly, reduces production costs and improves yield rate.

[0074] In some embodiments of the present application, Figure 2 As shown, the first switch module 106 includes:

[0075] A first switch 1062 is connected between the input circuit 102 and the capacitor module, and the first switch 1062, the input circuit 102 and the target capacitor form a path, wherein the target capacitor is connected to the target coil;

[0076] The second switch 1064 is connected between the input circuit 102 and the coil module 104 . The second switch 1064 , the input circuit 102 , and the target coil form a path.

[0077] In the embodiment of the present application, the first switch module 106 includes a first switch 1062 and a second switch 1064. The first switch 1062 is used to connect the input circuit 102 and the first capacitor 1046, or to connect the input circuit 102 and the second capacitor 1048. The second switch 1064 is used to connect the input circuit 102 and the first charging coil 1042, or to connect the input circuit 102 and the second charging coil 1044.

[0078] Among them, since the first capacitor 1046 and the first charging coil 1042 are connected in series, and the second capacitor 1048 and the second charging coil 1044 are connected in series, after the first switch 1062 and the second switch 1064 are operated, a resonant circuit is formed between the corresponding capacitors and coils. At this time, the target coil transmits an energy signal according to the corresponding self-resonant frequency. After the energy signal is received by the electronic device, the electronic device returns a corresponding response signal, and then enters the wireless charging process until the battery of the electronic device is fully charged or the electronic device is removed.

[0079] The embodiment of the present application sets the first switch module 106 to select the best target coil from multiple charging coils to charge the electronic device, which can effectively reduce energy loss, improve energy utilization, and improve the efficiency and charging speed of wireless charging, thereby effectively improving the user experience of wireless charging.

[0080] In some embodiments of the present application, the first switch 1062 includes:

[0081] A first movable contact, wherein a first end of the first movable contact is connected to the input circuit 102, and a second end of the first movable contact is connected to the first capacitor 1046, or connected to the second capacitor 1048;

[0082] The second switch 1064 includes:

[0083] The second moving contact, the first end of the second moving contact is connected to the input circuit 102 , and the second end of the second moving contact is connected to the first charging coil 1042 , or connected to the second charging coil 1044 .

[0084] In the embodiment of the present application, the first switch 1062 is a "single-pole multiple-throw" switch device, specifically a "single-pole N-throw" switch device. Specifically, the first switch 1062 includes a first moving contact, one end of the first moving contact is a fixed end, which is connected to the input circuit 102, and the second end of the first moving contact is a moving segment, which can be switched between two states of connecting the first capacitor 1046 and connecting the second capacitor 1048. Therefore, the first switch 1062 can connect the input circuit 102 and the first capacitor 1046, or connect the input circuit 102 and the second capacitor 1048.

[0085] Correspondingly, the second switch 1064 includes a second moving contact, one end of which is a fixed end connected to the input circuit 102, and the second end of the second moving contact is a moving section, which can be switched between two states of connecting to the first charging coil 1042 and connecting to the second charging coil 1044, thereby connecting the input circuit 102 and the first charging coil 1042, or connecting the input circuit 102 and the second charging coil 1044.

[0086] The embodiment of the present application connects the input circuit 102 and the target capacitor through the first switch 1062, and connects the input circuit 102 and the target coil through the second switch 1064, so that the wireless charging stand 100 can wirelessly charge the electronic device through the target coil, that is, the coil closest to the electronic device, which can effectively reduce energy loss, improve energy utilization, and improve the efficiency and charging speed of wireless charging, thereby effectively improving the user experience of wireless charging.

[0087] In some embodiments of the present application, Figure 2 As shown, the wireless charging station 100 further includes: a first controller 108 connected to the input circuit 102 and the first switch module 106 . The first controller 108 determines the target coil according to the response signal and controls the first switch module 106 to connect the target coil and the input circuit 102 .

[0088] In some embodiments of the present application, a wireless charging method is provided for controlling a wireless charging stand as provided in any of the above embodiments. Figure 3 FIG. 1 shows one of the flow charts of the wireless charging method according to an embodiment of the present application. Figure 3 As shown, the method includes:

[0089] Step 302, controlling the coil module of the wireless charging station to transmit an energy signal;

[0090] Step 304, receiving a response signal corresponding to the energy signal, and determining the location information of the electronic device according to the response signal;

[0091] Step 306: Determine a target coil among the first charging coil and the second charging coil of the wireless charging stand according to the position information, and wirelessly charge the electronic device through the target coil.

[0092] In an embodiment of the present application, the wireless charging stand sends an energy signal to the electronic device being charged through a coil module, and receives a response signal returned by the electronic device based on the strength of the energy signal. Specifically, based on the different placement positions of the electronic device on the wireless charging stand, the distance between it and the first charging coil and the second charging coil is also different. It can be understood that the first charging coil and the second charging coil send energy signals to the electronic device at the same transmission power, and these energy signals will attenuate as the distance increases.

[0093] Therefore, the stronger the energy signal received by the electronic device, the closer the distance between the electronic device and the coil that sends the energy signal. Therefore, the electronic device returns a response signal corresponding to the stronger energy signal to the wireless charging stand. At this time, after receiving the response signal, the wireless charging stand can determine whether the electronic device is relative to the first charging coil or the second charging coil based on the response signal, thereby determining the location information of the electronic device, wherein the location information of the electronic device may be the position of the electronic device relative to the first charging coil and the second charging coil.

[0094] Furthermore, based on the location information of the electronic device, a target coil that is closer to the electronic device is determined between the first charging coil and the second charging coil, and the electronic device is charged through the target coil, which can effectively improve the energy transfer efficiency, thereby improving the charging efficiency of wireless charging and speeding up the charging speed on the one hand, and reducing energy loss on the other hand, thereby effectively improving the user experience of wireless charging.

[0095] In some embodiments of the present application, controlling the coil module of the wireless charging station to transmit an energy signal includes:

[0096] Within a first preset time period, controlling the first charging coil of the wireless charging stand to send a first energy signal;

[0097] If no response signal corresponding to the first energy signal is received within the first preset time period, the wireless charging stand is controlled to control the second charging coil to send an energy signal within the first preset time period after delaying for a second preset time period;

[0098] Determine the location information of the electronic device based on the response signal, including:

[0099] In case of receiving the response signal, determining the target signal in the first energy signal and the second energy signal according to the response signal;

[0100] The location information of the electronic device is determined according to the location of the charging coil corresponding to the target signal.

[0101] In an embodiment of the present application, when the wireless charging stand detects that an electronic device is placed on the charging panel of the wireless charging stand, the wireless charging stand is controlled to continuously send an energy signal at a preset first self-resonant frequency for a first preset time period, and wireless charging is paired with the electronic device through the energy signal. The energy signal can be received by the receiving coil of the electronic device, thereby identifying the corresponding charging signal. After the electronic device identifies the charging signal, it returns a response signal at the same self-resonant frequency based on the method specified by the wireless charging protocol (such as the QI protocol).

[0102] First, the first charging coil is controlled to send a first energy signal within a first preset time. If no response signal is received within the first preset time, it means that the currently activated first charging coil does not match the position of the receiving coil of the electronic device, and then after a second delay, the second charging coil is controlled to work to send a second energy signal until a response signal is received.

[0103] If a response signal is received, a target coil closer to the electronic device is determined in the first charging coil and the second charging coil according to the energy signal corresponding to the response signal. The position of the target coil is the position information of the electronic device.

[0104] Specifically, for example, the first charging coil 1042 and the second charging coil 1044 have different self-resonance frequencies. It is assumed that the self-resonance frequency of the first charging coil 1042 is F1 and the self-resonance frequency of the second charging coil is F2.

[0105] When the wireless charging stand 100 detects that an electronic device is placed on the charging panel of the wireless charging stand 100, the first charging coil 1042 is first controlled to transmit an energy signal S1 according to the self-resonant frequency F1, and the transmission continues for a duration of T1. If a response signal corresponding to the energy signal S1 is received within the duration of T1, the first charging coil 1042 is determined as the target coil, and the electronic device is wirelessly charged through the coil.

[0106] If no response signal of the energy signal S1 is received within the time period T1, the second charging coil 1044 is controlled to transmit the energy signal S2 according to the self-resonant frequency F2 and lasts for the time period T2. If a response signal corresponding to the energy signal S2 is received within the time period T2, the second charging coil 1044 is determined as the target coil, and the electronic device is wirelessly charged through the coil.

[0107] It can be understood that the charged electronic device will determine whether to return a response signal based on the signal strength of the received energy signal. If the energy signal S1 is greater than the preset strength threshold, the electronic device will return a response signal within the T1 time period. If the energy signal S1 is less than the strength threshold, it will continue to wait for the energy signal S2, select the one with a stronger signal strength between the energy signal S1 and the energy signal S2, and return a response signal corresponding to the energy signal with a stronger energy strength. Therefore, during wireless charging, a more efficient coil can always be started for wireless charging. On the one hand, energy loss is reduced and energy utilization is improved. On the other hand, the efficiency of wireless charging is improved and the charging speed is increased, thereby effectively improving the user experience of wireless charging.

[0108] In some embodiments of the present application, determining a target coil in a first charging coil and a second charging coil of a wireless charging stand according to the position information includes:

[0109] According to the position information, a target coil matching the position of the position information is determined among the first charging coil and the second charging coil.

[0110] In the embodiment of the present application, when determining the target coil, the corresponding target coil can be determined by the location information of the electronic device. Specifically, the electronic device returns corresponding response information according to the strength of the received energy signal. After receiving the response information, the wireless charging stand can determine the charging coil with the same self-resonant frequency as the response information according to the self-resonant frequency corresponding to the response information, thereby determining the location information of the electronic device.

[0111] Furthermore, based on the location information of the electronic device, a target coil that matches the first charging coil and the second charging coil is determined, and wireless charging is performed through the target coil pair. On the one hand, energy loss is reduced and energy utilization is improved. On the other hand, the efficiency of wireless charging is improved and the charging speed is increased, thereby effectively improving the user experience of wireless charging.

[0112] In some embodiments of the present application, a wireless charging device is provided for controlling a wireless charging stand as in any of the above embodiments. Figure 4 FIG. 1 shows one of the structural block diagrams of a wireless charging device according to an embodiment of the present application. Figure 4 As shown, the wireless charging device 400 includes:

[0113] The first control module 402 is used to control the coil module of the wireless charging station to transmit an energy signal;

[0114] The first determination module 404 receives a response signal corresponding to the energy signal, determines the location information of the electronic device according to the response signal; determines the target coil in the first charging coil and the second charging coil of the wireless charging seat according to the location information, and wirelessly charges the electronic device through the target coil.

[0115] In an embodiment of the present application, the wireless charging stand sends an energy signal to the electronic device being charged through a coil module, and receives a response signal returned by the electronic device based on the strength of the energy signal. Specifically, based on the different placement positions of the electronic device on the wireless charging stand, the distance between it and the first charging coil and the second charging coil is also different. It can be understood that the first charging coil and the second charging coil send energy signals to the electronic device at the same transmission power, and these energy signals will attenuate as the distance increases.

[0116] Therefore, the stronger the energy signal received by the electronic device, the closer the distance between the electronic device and the coil that sends the energy signal. Therefore, the electronic device returns a response signal corresponding to the stronger energy signal to the wireless charging stand. At this time, after receiving the response signal, the wireless charging stand can determine whether the electronic device is relative to the first charging coil or the second charging coil based on the response signal, thereby determining the location information of the electronic device, wherein the location information of the electronic device may be the position of the electronic device relative to the first charging coil and the second charging coil.

[0117] Furthermore, based on the location information of the electronic device, a target coil that is closer to the electronic device is determined between the first charging coil and the second charging coil, and the electronic device is charged through the target coil, which can effectively improve the energy transfer efficiency, thereby improving the charging efficiency of wireless charging and speeding up the charging speed on the one hand, and reducing energy loss on the other hand, thereby effectively improving the user experience of wireless charging.

[0118] In some embodiments of the present application, the first control module is further used to control the first charging coil of the wireless charging stand to send an energy signal within a first preset time length; if no response signal corresponding to the first energy signal is received within the first preset time length, the wireless charging stand is controlled to control the second charging coil to send an energy signal within the first preset time length after delaying for a second preset time length;

[0119] The first determination module is also used to determine the target signal in the first energy signal and the second energy signal according to the response signal when a response signal is received; and determine the location information of the electronic device according to the position of the charging coil corresponding to the target signal.

[0120] In the embodiment of the present application, the one with stronger signal strength is selected from the energy signal S1 and the energy signal S2, and a response signal corresponding to the energy signal with stronger energy is returned. Therefore, during wireless charging, a coil with higher efficiency can always be started for wireless charging. On the one hand, energy loss is reduced and energy utilization is improved. On the other hand, the efficiency of wireless charging is improved and the charging speed is increased, thereby effectively improving the user experience of wireless charging.

[0121] In some embodiments of the present application, based on the position information, a target coil matching the position of the position information is determined in the first charging coil and the second charging coil.

[0122] In an embodiment of the present application, based on the location information of the electronic device, a target coil that matches the first charging coil and the second charging coil is determined, and wireless charging is performed through the target coil pair. On the one hand, energy loss is reduced and energy utilization is improved. On the other hand, the efficiency of wireless charging is improved and the charging speed is increased, thereby effectively improving the user experience of wireless charging.

[0123] In some embodiments of the present application, an electronic device is provided. Figure 5 A schematic diagram of the structure of an electronic device according to an embodiment of the present application is shown. Figure 5 As shown, the electronic device 200 includes:

[0124] Rectification circuit 202;

[0125] A receiving coil 204, for receiving an energy signal;

[0126] A third capacitor 205 and a fourth capacitor 206, wherein the third capacitor 205 and the fourth capacitor 206 are connected between the rectifier circuit 202 and the receiving coil 204;

[0127] The second switch module 208 is connected to the rectifier circuit 202. The second switch module 208 connects the rectifier circuit 202, the third capacitor 205 and the receiving coil 204, or connects the rectifier circuit 202, the third capacitor 205 and the receiving coil 204 according to the resonant frequency of the energy signal;

[0128] Among them, the electronic device sends a response signal to the wireless charging stand according to the signal strength of the received energy signal, wherein the response signal corresponds to the energy signal with the strongest signal strength.

[0129] In the embodiment of the present application, the electronic device 200 is an electronic device with a wireless charging function 200. The electronic device forms a resonant circuit through the receiving coil 204 and the third capacitor 205 or the fourth capacitor 206, thereby receiving the energy signal sent by the wireless charging stand and performing wireless charging through the energy signal.

[0130] The electronic device 200 also includes a second switch module 208. When the electronic device 200 is placed on the charging panel of the wireless charging stand, the electronic device receives the energy signal sent by the wireless charging stand, and sends a return signal to the wireless charging stand based on the signal strength of the energy signal. The wireless charging stand can select a transmitting coil that best matches the position of the receiving coil 204 of the electronic device 200 from its first charging coil and second charging coil based on the return signal for wireless charging, thereby improving the efficiency of wireless charging.

[0131] Specifically, based on the different placement positions of the electronic device 200 on the wireless charging base, the distances between the receiving coil 204 and the first charging coil and the second charging coil are also different, and the signal attenuation rates are also different.

[0132] Therefore, the stronger the signal strength of the energy signal received by the electronic device 200, the closer the distance between the receiving coil 204 and the charging coil that sends the energy signal. Therefore, the electronic device returns a response signal corresponding to the stronger energy signal to the wireless charging seat. At this time, after receiving the response signal, the wireless charging seat determines the target coil closer to the electronic device in the first charging coil and the second charging coil according to the response signal, and charges the electronic device through the target coil, which can effectively improve the energy transfer efficiency, thereby improving the charging efficiency of wireless charging and speeding up the charging speed on the one hand, and reducing energy loss on the other hand, thereby effectively improving the user experience of wireless charging.

[0133] In some embodiments of the present application, the second switch module 208 includes:

[0134] A third switch device 2082, wherein an output end of the third switch device 2082 is connected to the rectifier circuit 202, and an input end of the third switch device is connected to the third capacitor 205 or the fourth capacitor 206;

[0135] The fourth switch device 2084 , the output end of the fourth switch device 2084 is connected to the third capacitor 205 or the fourth capacitor 206 , and the input end of the fourth switch device is connected to the receiving coil 204 .

[0136] In the embodiment of the present application, the second switch module 208 includes a third switch device 2082 and a fourth switch device 2084. The third switch device 2082 is used to connect the rectifier circuit 202 with the third capacitor 205, or to connect the rectifier circuit 202 with the fourth capacitor 206. The fourth switch device 2084 is used to connect the receiving coil 204 with the third capacitor 205, or to connect the receiving coil 204 with the fourth capacitor 206.

[0137] The third switch device 2082 and the fourth switch device 2084 are both single-pole multi-throw switches. In some typical embodiments, the third switch device 2082 and the fourth switch device 2084 are single-pole double-throw switches.

[0138] The embodiment of the present application sets a switching device so that the electronic device 200 can receive energy signals of different self-resonant frequencies, so that the wireless charging stand can select the target coil that best matches the position of the receiving coil 204 of the electronic device 200, and charge the electronic device 200 through the target coil, which can effectively reduce energy loss, improve energy utilization, and improve the efficiency and charging speed of wireless charging, thereby effectively improving the user experience of wireless charging.

[0139] In some embodiments of the present application, the electronic device 200 includes: an energy storage device 210 connected to the output end of the rectifier circuit 202;

[0140] The second controller 212 is connected to the second switch module 208 , and controls the second switch module according to the energy signal.

[0141] The embodiments of the present application can effectively reduce energy loss, improve energy utilization, and increase the efficiency and charging speed of wireless charging, thereby effectively improving the user experience of wireless charging.

[0142] In some embodiments of the present application, a wireless charging method is provided for controlling an electronic device as provided in any of the above embodiments. Figure 6 FIG. 2 shows a second flow chart of a wireless charging method according to an embodiment of the present application. Figure 6 As shown, the method includes:

[0143] Step 602, receiving an energy signal sent by the wireless charging station;

[0144] Step 604, determining a target energy signal from the N energy signals according to the signal strengths of the N received energy signals;

[0145] Among them, the signal strength of the target energy signal is the highest, and N is a positive integer;

[0146] Step 606: Generate a response signal corresponding to the target energy signal, and send the response signal to the wireless charging stand.

[0147] In the embodiment of the present application, the stronger the energy signal received by the electronic device, the closer the distance between the electronic device and the coil that emits the energy signal. After the electronic device receives N energy signals, the target signal with the highest signal strength is determined based on the signal strengths of the N energy signals. The wireless charging coil that emits the target signal is the wireless charging coil that is closest to the electronic device.

[0148] At this time, the electronic device returns a response signal to the wireless charging stand according to the resonant frequency corresponding to the target energy signal. After receiving the response signal, the wireless charging stand determines the target coil that is closer to the electronic device in the first charging coil and the second charging coil based on the response signal, and charges the electronic device through the target coil, which can effectively improve the energy transfer efficiency, thereby improving the charging efficiency of wireless charging and speeding up the charging speed on the one hand, and reducing energy loss on the other hand, thereby effectively improving the user experience of wireless charging.

[0149] In some embodiments of the present application, receiving an energy signal sent by a wireless charging stand includes:

[0150] Controlling the electronic device to receive an energy signal at a first self-resonant frequency;

[0151] Within a third preset time period, when an energy signal is received, wireless charging is performed using the first self-resonant frequency;

[0152] If no energy signal is received within the third preset time period, the electronic device is controlled to adjust the self-resonance frequency and receive the energy signal at the adjusted self-resonance frequency.

[0153] In the embodiment of the present application, after the electronic device is placed on the charging panel of the wireless charging stand, the electronic device is first controlled to receive an energy signal according to a preset first self-resonance frequency.

[0154] If an energy signal is received within the third preset time, the current first self-resonant frequency is maintained for wireless charging. If no energy signal is received within the third preset time, the electronic device is controlled to switch to a different self-resonant frequency, specifically, the second capacitor connected to the receiving coil of the electronic device is switched to switch to the second self-resonant frequency to receive the energy signal, until the electronic device receives the energy signal, and then wireless charging is performed through the self-resonant frequency of the currently received energy signal.

[0155] The embodiment of the present application enables the wireless charging stand to perform wireless charging with the transmitting coil that best matches the position of the receiving coil during the wireless charging process, thereby improving the charging efficiency.

[0156] In some embodiments of the present application, a wireless charging device is provided for controlling an electronic device as provided in any of the above embodiments. Figure 7 FIG. 2 shows a second structural block diagram of a wireless charging device according to an embodiment of the present application. Figure 7 As shown, the wireless charging device 700 includes:

[0157] The receiving module 702 is used to receive the energy signal sent by the wireless charging station;

[0158] A second determination module 704 is used to determine a target energy signal among the N energy signals according to the signal strengths of the N received energy signals, wherein the signal strength of the target energy signal is the highest, and N is a positive integer first self-resonant frequency;

[0159] The sending module 706 is used to generate a response signal corresponding to the target energy signal, and send the response signal to the wireless charging stand.

[0160] In the embodiment of the present application, the stronger the energy signal received by the electronic device, the closer the distance between the electronic device and the coil that emits the energy signal. After the electronic device receives N energy signals, the target signal with the highest signal strength is determined based on the signal strengths of the N energy signals. The wireless charging coil that emits the target signal is the wireless charging coil that is closest to the electronic device.

[0161] At this time, the electronic device returns a response signal to the wireless charging stand according to the resonant frequency corresponding to the target energy signal. After receiving the response signal, the wireless charging stand determines the target coil that is closer to the electronic device in the first charging coil and the second charging coil based on the response signal, and charges the electronic device through the target coil, which can effectively improve the energy transfer efficiency, thereby improving the charging efficiency of wireless charging and speeding up the charging speed on the one hand, and reducing energy loss on the other hand, thereby effectively improving the user experience of wireless charging.

[0162] In some embodiments of the present application, the wireless charging device further includes: a second control module, configured to control the electronic device to receive an energy signal at a first self-resonant frequency; and further configured to perform wireless charging at the first self-resonant frequency when an energy signal is received within a third preset time period;

[0163] It is also used to control the electronic device to adjust the self-resonance frequency and receive the energy signal at the adjusted second self-resonance frequency when no energy signal is received within a third preset time period.

[0164] In the embodiment of the present application, after the electronic device is placed on the charging panel of the wireless charging stand, the electronic device is first controlled to receive an energy signal according to a preset first self-resonance frequency.

[0165] If an energy signal is received within the third preset time, the current first self-resonant frequency is maintained for wireless charging. If no energy signal is received within the third preset time, the electronic device is controlled to switch to a different self-resonant frequency, specifically, the second capacitor connected to the receiving coil of the electronic device is switched to switch to the second self-resonant frequency to receive the energy signal, until the electronic device receives the energy signal, and then wireless charging is performed through the self-resonant frequency of the currently received energy signal.

[0166] The embodiment of the present application enables the wireless charging stand to perform wireless charging with the transmitting coil that best matches the position of the receiving coil during the wireless charging process, thereby improving the charging efficiency.

[0167] In some embodiments of the present application, a readable storage medium is provided, on which a program or instruction is stored. When the program or instruction is executed by a processor, the steps of a method in any of the above method embodiments are implemented. Therefore, the readable storage medium also includes all the beneficial effects of any of the above method embodiments. To avoid repetition, they are not repeated here.

[0168] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0169] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A wireless charging stand, characterized in that: include: Input circuit and capacitor module; The coil module includes a first charging coil and a second charging coil, and is used to send an energy signal to a receiving coil of the electronic device and receive a response signal corresponding to the energy signal; a first switch module, connected between the input circuit and the coil module, and used to connect the first charging coil and the input circuit, or connect the second charging coil and the input circuit; wherein the first charging coil and the second charging coil send energy signals to the electronic device at the same transmission power, the energy signal attenuates as the distance increases, the electronic device sends the response signal to the wireless charging stand according to the signal strength of the received energy signal, wherein the response signal corresponds to the energy signal with the strongest signal strength, the position information is the position of the electronic device relative to the first charging coil and the second charging coil, the wireless charging stand determines the position information of the electronic device according to the response signal, determines the target coil among the first charging coil and the second charging coil according to the position information, and wirelessly charges the electronic device through the target coil; The first switch module comprises: A first switch connected between the input circuit and the capacitor module, wherein the first switch, the input circuit and the target capacitor form a path, wherein the target capacitor is connected to the target coil; The second switch is connected between the input circuit and the coil module, and the second switch, the input circuit and the target coil form a path.

2. The wireless charging stand according to claim 1, characterized in that: The capacitor module includes a first capacitor and a second capacitor, the first capacitor is connected in series with the first charging coil, and the second capacitor is connected in series with the second charging coil, wherein the capacitance of the first capacitor is different from that of the second capacitor.

3. The wireless charging stand according to claim 2, characterized in that: The first switch comprises: A first movable contact, wherein a first end of the first movable contact is connected to the input circuit, and a second end of the first movable contact is connected to the first capacitor or the second capacitor; The second switch comprises: A second moving contact, wherein a first end of the second moving contact is connected to the input circuit, and a second end of the second moving contact is connected to the first charging coil or the second charging coil.

4. A wireless charging method for controlling a wireless charging stand as claimed in any one of claims 1 to 3, characterized in that: The method comprises: Controlling the coil module of the wireless charging stand to transmit an energy signal; receiving a response signal corresponding to the energy signal, and determining the location information of the electronic device according to the response signal; According to the position information, a target coil is determined among the first charging coil and the second charging coil of the wireless charging stand, and the electronic device is wirelessly charged through the target coil.

5. The wireless charging method according to claim 4, characterized in that: The step of controlling the coil module of the wireless charging station to transmit an energy signal comprises: Within a first preset time period, controlling the first charging coil of the wireless charging stand to send a first energy signal; If no response signal corresponding to the first energy signal is received within the first preset time period, controlling the wireless charging stand to delay for a second preset time period and then controlling the second charging coil to send a second energy signal within the first preset time period; The determining the location information of the electronic device according to the response signal includes: In case of receiving the response signal, determining a target signal in the first energy signal and the second energy signal according to the response signal; The location information of the electronic device is determined according to the location of the charging coil corresponding to the target signal.

6. The wireless charging method according to claim 4, characterized in that: The step of determining a target coil in a first charging coil and a second charging coil of the wireless charging stand according to the position information includes: According to the position information, the target coil whose position matches the position information is determined among the first charging coil and the second charging coil.

7. A wireless charging device for controlling a wireless charging stand as claimed in any one of claims 1 to 3, characterized in that: The wireless charging device comprises: A first control module, used to control the coil module of the wireless charging stand to transmit an energy signal; The first determination module is used to receive a response signal corresponding to the energy signal, and determine the location information of the electronic device according to the response signal; according to the location information, determine the target coil in the first charging coil and the second charging coil of the wireless charging seat, and wirelessly charge the electronic device through the target coil.

8. An electronic device, characterized in that: include: Rectification circuit; A receiving coil, used for receiving an energy signal; a third capacitor and a fourth capacitor, wherein the third capacitor and the fourth capacitor are connected between the rectifier circuit and the receiving coil; a second switch module connected to the rectifier circuit, wherein the second switch module connects the rectifier circuit, the third capacitor and the receiving coil, or connects the rectifier circuit, the third capacitor and the receiving coil according to the resonant frequency of the energy signal; Wherein, based on the placement position of the electronic device on the wireless charging seat, the electronic device receives the energy signal sent by the wireless charging seat, and the electronic device sends a response signal to the wireless charging seat according to the signal strength of the received energy signal, wherein the response signal corresponds to the energy signal with the strongest signal strength, and the wireless charging seat determines the location information of the electronic device according to the response signal, determines the target coil in the first charging coil and the second charging coil in the wireless charging seat according to the location information, and wirelessly charges the electronic device through the target coil.

9. The electronic device according to claim 8, characterized in that: The second switch module comprises: a third switch device, wherein an output end of the third switch device is connected to the rectifier circuit, and an input end of the third switch device is connected to the third capacitor or the fourth capacitor; A fourth switch device, wherein an output end of the fourth switch device is connected to the third capacitor or the fourth capacitor, and an input end of the fourth switch device is connected to the receiving coil.

10. A wireless charging method, used for the electronic device according to claim 8 or 9, characterized in that: The method comprises: Receive energy signals sent by the wireless charging station; Determine a target energy signal among the N energy signals according to the signal strengths of the received N energy signals, wherein the signal strength of the target energy signal is the highest, and N is a positive integer; A response signal corresponding to the target energy signal is generated, and the response signal is sent to the wireless charging stand.

11. The wireless charging method according to claim 10, characterized in that: The receiving the energy signal sent by the wireless charging base includes: Controlling the electronic device to receive an energy signal at a first self-resonant frequency; When the energy signal is received within a third preset time period, wireless charging is performed using the first self-resonant frequency; If the energy signal is not received within the third preset time period, the electronic device is controlled to adjust the self-resonance frequency and receive the energy signal at the adjusted self-resonance frequency.

12. A wireless charging device, used for the electronic device according to claim 8 or 9, characterized in that: The wireless charging device comprises: A receiving module, used for receiving an energy signal sent by the wireless charging station; A second determination module is used to determine a target energy signal among the N energy signals according to the signal strengths of the received N energy signals, wherein the signal strength of the target energy signal is the highest, and N is a positive integer; The sending module is used to generate a response signal corresponding to the target energy signal, and send the response signal to the wireless charging stand.

13. A readable storage medium, characterized in that: The readable storage medium stores a program or instruction, and when the program or instruction is executed by a processor, the steps of the method as claimed in any one of claims 4 to 6, 10, and 11 are implemented.

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