Wireless charging method, device, medium, equipment and system

Abstract

The invention relates to a wireless charging method, device, medium, equipment and system, and relates to the technical field of charging, and the method comprises the steps: transmitting a target detection signal into a resonant cavity of the wireless charging equipment in a standby state of the wireless charging equipment, and obtaining a target parameter, the energy intensity of the target detection signal is smaller than the energy intensity capable of awakening the to-be-charged equipment; when the target parameter meets the triggering condition, determining the placement condition of the to-be-charged equipment on the wireless charging equipment; and when the to-be-charged equipment is placed on the wireless charging equipment, controlling the wireless charging equipment to send an energy signal to the to-be-charged equipment so as to charge the to-be-charged equipment. According to the wireless charging device disclosed by the invention, the target detection signal with small energy intensity is sent in the standby state, and the to-be-charged device can be charged, so that the intensity of radiation energy of the wireless charging device in the standby state can be reduced, and the standby power consumption of the wireless charging device can also be reduced.

Description

Technical Field

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

[0002] In the related art, a wireless charging device will continuously send out energy signals in a standby state. The radiation energy of the energy signals is strong and will increase the standby power consumption of the wireless charging device. Summary of the invention

[0003] In order to overcome the problems existing in the related art, the present disclosure provides a wireless charging method, device, medium, equipment and system.

[0004] A first aspect of an embodiment of the present disclosure provides a wireless charging method, including:

[0005] In a standby state of the wireless charging device, a target detection signal is sent into a resonant cavity of the wireless charging device, and a target parameter is obtained, wherein the energy intensity of the target detection signal is less than the energy intensity capable of waking up the device to be charged;

[0006] When the target parameter meets the trigger condition, determining the placement of the device to be charged on the wireless charging device;

[0007] When a device to be charged is placed on the wireless charging device, the wireless charging device is controlled to send an energy signal to the device to be charged, so as to charge the device to be charged.

[0008] Optionally, the target parameter includes a quality factor, and when the target parameter meets a trigger condition, determining a placement condition of the device to be charged on the wireless charging device includes:

[0009] When the fluctuation value of the quality factor within the first target time period is greater than or equal to a first fluctuation threshold, the placement status of the device to be charged on the wireless charging device is determined.

[0010] Optionally, the target parameter includes a resonant frequency, and when the target parameter meets a trigger condition, determining a placement condition of the device to be charged on the wireless charging device includes:

[0011] When the fluctuation value of the resonant frequency within the second target time length is greater than or equal to a second fluctuation threshold, the placement status of the device to be charged on the wireless charging device is determined.

[0012] Optionally, the target parameters include a quality factor and a resonant frequency, and when the target parameters meet a trigger condition, determining a placement condition of the device to be charged on the wireless charging device includes:

[0013] When the fluctuation value of the quality factor within the third target time is greater than or equal to the third fluctuation threshold, determining the placement of the device to be charged on the wireless charging device; or,

[0014] When the fluctuation value of the resonant frequency within the third target time period is greater than or equal to a fourth fluctuation threshold, the placement status of the device to be charged on the wireless charging device is determined.

[0015] Optionally, the method further comprises:

[0016] When different test devices to be charged are connected to the wireless charging device, a first fluctuation value of a corresponding quality factor and a second fluctuation value of a corresponding resonant frequency are obtained;

[0017] A fluctuation threshold corresponding to the quality factor is determined according to the smallest fluctuation value among the first fluctuation values, and a fluctuation threshold corresponding to the resonance frequency is determined according to the smallest fluctuation value among the second fluctuation values.

[0018] Optionally, determining the placement of the device to be charged on the wireless charging device includes:

[0019] Sending a wake-up signal to the device to be charged;

[0020] When the wireless charging device receives the response signal sent by the device to be charged in response to the wake-up signal, it is determined that the device to be charged is placed on the wireless charging device.

[0021] Optionally, the method further comprises:

[0022] When the wireless charging device does not receive the response signal, determining a parameter value of the target parameter;

[0023] When the parameter value of the target parameter is less than or equal to a preset threshold, the sending of the wake-up signal is stopped, and the wireless charging device is controlled to perform foreign object detection.

[0024] Optionally, the preset threshold is obtained according to the following method:

[0025] After placing different objects on the wireless charging device, determining the corresponding parameter values ​​of the target parameters, and determining the maximum value among the parameter values;

[0026] The preset threshold is determined according to the maximum value.

[0027] A second aspect of the embodiments of the present disclosure provides a wireless charging method, including:

[0028] Receive an energy signal sent by a wireless charging device to charge a device to be charged through the wireless charging device, wherein the energy signal is sent by the wireless charging device according to the following method:

[0029] In the standby state of the wireless charging device, a target detection signal is sent into the resonant cavity of the wireless charging device, and a target parameter is obtained, wherein the energy intensity of the target detection signal is less than the energy intensity that can wake up the device to be charged; when the target parameter meets the trigger condition, the placement of the device to be charged on the wireless charging device is determined; when the device to be charged is placed on the wireless charging device, the wireless charging device is controlled to send the energy signal to the device to be charged.

[0030] Optionally, the method further comprises:

[0031] Receiving a wake-up signal sent by the wireless charging device;

[0032] According to the wake-up signal, a response signal is sent to the wireless charging device, so that the wireless charging device determines that the device to be charged is placed on the wireless charging device according to the response signal.

[0033] A third aspect of the embodiments of the present disclosure provides a wireless charging device, including:

[0034] an acquisition module, configured to send a target detection signal into a resonant cavity of the wireless charging device and acquire a target parameter when the wireless charging device is in a standby state, wherein the energy intensity of the target detection signal is less than an energy intensity capable of waking up the device to be charged;

[0035] A determination module, configured to determine the placement of the device to be charged on the wireless charging device when the target parameter meets the trigger condition;

[0036] The sending module controls the wireless charging device to send an energy signal to the device to be charged when a device to be charged is placed on the wireless charging device, so as to charge the device to be charged.

[0037] A fourth aspect of the embodiments of the present disclosure provides a wireless charging device, including:

[0038] The receiving module is configured to receive an energy signal sent by a wireless charging device to charge a device to be charged through the wireless charging device, wherein the energy signal is sent by the wireless charging device according to the following method:

[0039] In the standby state of the wireless charging device, a target detection signal is sent to the resonant cavity of the wireless charging device, and a target parameter is obtained, wherein the energy intensity of the target detection signal is less than the energy intensity that can wake up the device to be charged; when the target parameter meets the trigger condition, the placement of the device to be charged on the wireless charging device is determined; when the device to be charged is placed on the wireless charging device, the wireless charging device is controlled to send the energy signal to the device to be charged.

[0040] A fifth aspect of an embodiment of the present disclosure provides a computer-readable storage medium having computer program instructions stored thereon. When the program instructions are executed by a processor, the wireless charging method provided by the first aspect of the embodiment of the present disclosure is implemented.

[0041] A sixth aspect of an embodiment of the present disclosure provides a computer-readable storage medium having computer program instructions stored thereon. When the program instructions are executed by a processor, the wireless charging method provided by the second aspect of the embodiment of the present disclosure is implemented.

[0042] A seventh aspect of the embodiments of the present disclosure provides a wireless charging device, including:

[0043] a storage device including a computer program;

[0044] A processing device is used to execute the computer program to implement the wireless charging method provided by the first aspect of the embodiment of the present disclosure.

[0045] An eighth aspect of the embodiments of the present disclosure provides an electronic device, including:

[0046] a storage device including a computer program;

[0047] A processing device is used to execute the computer program to implement the wireless charging method provided in the second aspect of the embodiment of the present disclosure.

[0048] A ninth aspect of the embodiments of the present disclosure provides a wireless charging system, including:

[0049] A wireless charging device as provided in the third aspect of the embodiment of the present disclosure;

[0050] And, a wireless charging device as provided in the fourth aspect of an embodiment of the present disclosure.

[0051] The technical solution provided by the embodiments of the present disclosure may have the following beneficial effects:

[0052] In the disclosed embodiment, in the standby state of the wireless charging device, the target parameters are obtained by sending a target detection signal with a relatively low energy intensity into the resonant cavity of the wireless charging device, and when the target parameters meet the triggering conditions, the placement of the device to be charged on the wireless charging device is determined. When the device to be charged is placed on the wireless charging device, the wireless charging device can be controlled to charge the device to be charged. In this way, the wireless charging device can send a target detection signal with a low energy intensity in the standby state, and can also charge the device to be charged. In this way, the intensity of the radiated energy of the wireless charging device in the standby state can be reduced, and the standby power consumption of the wireless charging device can also be reduced.

[0053] 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

[0054] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0055] Figure 1 The figure is a flow chart of a wireless charging method according to an exemplary embodiment.

[0056] Figure 2 It is a pulse voltage attenuation waveform diagram on a wireless charging device without a device to be charged.

[0057] Figure 3 It is a pulse voltage attenuation waveform diagram of a device to be charged placed on a wireless charging device.

[0058] Figure 4 is a flow chart of another wireless charging method according to an exemplary embodiment.

[0059] Figure 5 is a flow chart of yet another wireless charging method according to an exemplary embodiment.

[0060] Figure 6 is a block diagram of a wireless charging device according to an exemplary embodiment.

[0061] Figure 7 is a block diagram of another wireless charging device according to an exemplary embodiment.

[0062] Figure 8 It is a block diagram of an electronic device according to an exemplary embodiment. DETAILED DESCRIPTION

[0063] 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 disclosure. Instead, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0064] In the related technology, wireless charging devices can be divided into two categories. One is ordinary consumer wireless charging devices, which are used in offices, homes, etc.; the other is vehicle-mounted front-mounted wireless charging devices. This type of wireless charging device requires a lower radiation energy value considering the impact on vehicle safety.

[0065] When a wireless charging device is charging an electronic device such as a mobile phone, most of the radiated magnetic field will be confined between the mobile phone coil and the wireless charging device coil. The wireless charging device continuously sends energy signals in standby mode. Energy signals can be divided into digital ping signals and analog ping signals. The radiation energy intensity is relatively high. If the wireless charging device is installed inside a vehicle, it may affect the safety of the vehicle. In addition, the wireless charging device continuously sends energy signals in standby mode, resulting in increased power consumption.

[0066] See also Figure 1 , Figure 1 is a flow chart of a wireless charging method according to an exemplary embodiment. Figure 1 As shown, it can be applied to wireless charging devices, including the following steps.

[0067] In step S101, in a standby state of the wireless charging device, a target detection signal is sent into a resonant cavity of the wireless charging device, and a target parameter is obtained. The energy intensity of the target detection signal is less than an energy intensity capable of waking up the device to be charged.

[0068] For example, the wireless charging device can be set up in a home, office area, etc., or in a vehicle, and the device to be charged can be, for example, a mobile phone, a tablet computer, a personal digital assistant, and other electronic devices. The resonant cavity of the wireless charging device is composed of a charging coil and a resonant capacitor of the wireless charging device. In the prior art, the target detection signal is used to detect whether there is a foreign object placed on the surface of the wireless charging device. The energy intensity of the target detection signal is less than the energy intensity that can wake up the device to be charged, so the energy of the target detection signal is relatively weak.

[0069] For example, by sending a target detection signal into the resonant cavity, a resonant current will be generated in the resonant cavity. The energy of the target detection signal will be lost during the resonance process, so the resonant current will gradually decay. The target parameter can be the quality factor, which is a basic parameter that characterizes the characteristics of the resonant circuit in the electronic circuit; the target parameter can be the resonant frequency in the resonant cavity. When an electronic device such as a mobile phone is placed on a wireless charging device, the coil of the electronic device and the coil of the wireless charger are coupled, causing the resonant frequency of the wireless charger resonant cavity to fluctuate greatly.

[0070] In step S102, when the target parameter meets the trigger condition, the placement of the device to be charged on the wireless charging device is determined.

[0071] For example, a trigger condition can be set according to the actual test results, and when the target parameter meets the trigger condition, it is determined whether there is a device to be charged on the wireless charging device. Here, when the target parameter meets the trigger condition, a wake-up signal can be sent to determine the placement of the device to be charged on the wireless charging device, and the energy intensity of the target detection signal is small, and the radiated energy is weak.

[0072] In step S103, when a device to be charged is placed on the wireless charging device, the wireless charging device is controlled to send an energy signal to the device to be charged so as to charge the device to be charged.

[0073] For example, when it is determined that a device to be charged is placed on the wireless charging device, the wireless charging device can be controlled to continue sending energy signals; if it is determined that no device to be charged is placed on the wireless charging device, the sending of energy signals can be stopped, or the reason why the target parameters meet the trigger conditions but there is actually no device to be charged placed on the wireless charging device can be determined first, and then the sending of energy signals can be stopped.

[0074] In this process, the wireless charging device detects whether the device to be charged is placed on the wireless charging device based on the target detection signal sent into the resonant cavity. Therefore, the wireless charging device sends the target detection signal into the resonant cavity and no longer continuously sends the energy signal outward. The energy intensity of the target detection signal is less than the energy intensity that can wake up the device to be charged, and the energy intensity of the energy signal is greater than or equal to the energy intensity that can wake up the device to be charged, that is, the energy intensity of the target detection signal can be much less than the energy intensity of the energy signal.

[0075] In the disclosed embodiment, in the standby state of the wireless charging device, the target parameters are obtained by sending a target detection signal with a relatively low energy intensity into the resonant cavity of the wireless charging device, and when the target parameters meet the triggering conditions, the placement of the device to be charged on the wireless charging device is determined. When the device to be charged is placed on the wireless charging device, the wireless charging device can be controlled to charge the device to be charged. In this way, the wireless charging device can send a target detection signal with a low energy intensity in the standby state, and can also charge the device to be charged. In this way, the intensity of the radiated energy of the wireless charging device in the standby state can be reduced, and the standby power consumption of the wireless charging device can also be reduced.

[0076] As an optional embodiment, the target parameter includes a quality factor, and when the target parameter meets the trigger condition, determining the placement of the device to be charged on the wireless charging device includes:

[0077] When the fluctuation value of the quality factor within the first target time period is greater than or equal to the first fluctuation threshold, the placement status of the device to be charged on the wireless charging device is determined.

[0078] For example, the quality factor is related to the oscillation period, and the voltage difference across the resonant capacitor at the start and end times of the oscillation period. The resonant current is attenuated due to the loss of energy of the target detection signal during the resonance process. Specifically, the larger the quality factor, the smaller the loss, and conversely, the smaller the quality factor, the greater the loss. The quality factor can be calculated by the following formula: Q = 2π × energy storage element energy storage / energy loss element energy consumption. Here, the calculation formula of the quality factor can be expressed as Q = π·(t2-t1) / T·㏑(V t2 / V t1 ). Where Q is the quality factor; t1 is the moment when the resonant current is generated in the resonant cavity, t2 is the moment after a period of time from t1, (t2-t1) can be the first target time, T is an oscillation period, (t2-t1) / T is the pulse count value obtained based on LC oscillation, V t1 is the pulse voltage value corresponding to the resonant current at time t1, V t2 is the pulse voltage value corresponding to the resonant current at time t2. Generally, the moment when the pulse voltage value decays to 0 is not taken as time t2, for example, V t1 Can be 3.3V, V t2 It can be 0.2V, or the pulse count value can be set to 3-8, that is, the value of (t2-t1) / T is between 3-8.

[0079] For example, refer to Figure 2 and Figure 3 , Figure 2 This is the pulse voltage attenuation waveform of the wireless charging device without the device to be charged. Figure 3It is a pulse voltage attenuation waveform diagram of a device to be charged placed on a wireless charging device, where the horizontal axis represents time t and the vertical axis represents the pulse voltage value V. Figure 2 and Figure 3 It can be seen that when a device to be charged is placed on the wireless charging device, the pulse voltage value decays significantly faster.

[0080] For example, the fluctuation value of the quality factor refers to the difference in the quality factor between the start time and the end time of the first target duration. When the fluctuation value of the quality factor within the first target duration is greater than or equal to the first fluctuation threshold, it can be determined that the quality factor meets the trigger condition, and then a wake-up signal is sent to determine the placement of the device to be charged on the wireless charging device.

[0081] As an optional embodiment, the target parameter includes a resonant frequency, and when the target parameter meets the trigger condition, determining the placement of the device to be charged on the wireless charging device includes:

[0082] When the fluctuation value of the resonance frequency within the second target time length is greater than or equal to the second fluctuation threshold, the placement status of the device to be charged on the wireless charging device is determined.

[0083] For example, the resonant frequency in the resonant cavity can be calculated by the formula 1 / [2π√(LC)], where f is the frequency in Hertz Hz; L is the inductance in Henry H; and C is the capacitance in Farad F. When an electronic device such as a mobile phone is placed on a wireless charging device, the coil of the electronic device and the coil of the wireless charging device are coupled, causing the resonant frequency of the resonant cavity of the wireless charging device to fluctuate greatly. The fluctuation value of the resonant frequency refers to the difference in the resonant frequency between the start and end times of the second target duration. When the fluctuation value of the resonant frequency within the second target duration is greater than the second fluctuation threshold, it can be determined that the resonant frequency meets the trigger condition, and then a wake-up signal is sent to determine the placement of the device to be charged on the wireless charging device.

[0084] As an optional embodiment, the target parameters include a quality factor and a resonant frequency. When the target parameters meet the trigger condition, determining the placement of the device to be charged on the wireless charging device includes:

[0085] When the fluctuation value of the quality factor within the third target time period is greater than or equal to the third fluctuation threshold, determining the placement of the device to be charged on the wireless charging device; or,

[0086] When the fluctuation value of the resonance frequency within the third target time length is greater than or equal to a fourth fluctuation threshold, the placement status of the device to be charged on the wireless charging device is determined.

[0087] For example, due to the variety of models and types of electronic devices, different types of electronic devices may only cause fluctuations in one parameter, so the fluctuation values ​​of different target parameters within the third target duration can be identified. The fluctuation value of the quality factor refers to the difference in the quality factor between the start and end of the third target duration, and the fluctuation value of the resonant frequency refers to the difference in the resonant frequency between the start and end of the third target duration. If the fluctuation value of one of the parameters meets the trigger condition, a wake-up signal can be sent to determine the placement of the device to be charged on the wireless charging device. In this way, the user's universal demand for wireless charging devices to be applicable to a variety of electronic devices can be met.

[0088] As an optional embodiment, the method further includes:

[0089] When different test devices to be charged are connected to the wireless charging device, a first fluctuation value of a corresponding quality factor and a second fluctuation value of a corresponding resonant frequency are obtained;

[0090] The fluctuation threshold corresponding to the quality factor is determined according to the smallest fluctuation value among the first fluctuation values, and the fluctuation threshold corresponding to the resonance frequency is determined according to the smallest fluctuation value among the second fluctuation values.

[0091] For example, when determining the fluctuation threshold, the change value of the quality factor and the resonant frequency of the device to be charged can be tested when the device to be charged is connected to the wireless charging device. In order to ensure that multiple types of devices to be charged can be detected by the wireless charging device, after the wireless charging device sends a target detection signal to the resonant cavity, the absolute value of the change value of the pulse voltage value in the resonant cavity within multiple oscillation cycles can be obtained to determine the fluctuation value of the quality factor within the multiple oscillation cycles, and further determine the fluctuation threshold corresponding to the quality factor; and after the wireless charging device sends a target detection signal to the resonant cavity, the absolute value of the change value of the resonant frequency in the resonant cavity within the same number of oscillation cycles can be obtained to determine the fluctuation threshold corresponding to the resonant frequency. For example, the number of oscillation cycles is 5, if different devices to be charged are close to the wireless charging device, and the first fluctuation values ​​of the quality factor detected within 5 oscillation cycles are 25, 28, and 30 respectively, then 25 can be determined as the fluctuation threshold of the quality factor, or the fluctuation threshold can be slightly less than the minimum fluctuation value, for example, it can be 24. The determination method of the fluctuation threshold of the resonant frequency is similar to that of the quality factor, which will not be repeated here.

[0092] As an optional embodiment, determining the placement of the device to be charged on the wireless charging device includes:

[0093] Send a wake-up signal to the device to be charged;

[0094] When the wireless charging device receives the response signal sent by the device to be charged in response to the wake-up signal, it is determined that the device to be charged is placed on the wireless charging device.

[0095] For example, after the target parameters meet the corresponding trigger conditions, the wireless charging device can send a wake-up signal. The energy intensity of the wake-up signal can wake up the device to be charged, so the energy of the wake-up signal is relatively strong. After the device to be charged receives the wake-up signal, it sends a response signal to the wireless charging device for the wake-up signal. The wireless charging device receives the response signal and determines that a device to be charged is placed on the wireless charging device. In this case, energy signals can be continuously output to charge the device to be charged. In addition, the wake-up signal here is actually an energy signal, including a digital ping signal and an analog ping signal, with a relatively high energy intensity.

[0096] As an optional embodiment, the method further includes:

[0097] When the wireless charging device does not receive the response signal, determining a parameter value of the target parameter;

[0098] When the parameter value of the target parameter is less than or equal to the preset threshold, the sending of the wake-up signal is stopped, and the wireless charging device is controlled to perform foreign object detection.

[0099] For example, when the wireless charging device does not receive the response signal of the device to be charged, it may be due to other reasons that cause the target parameter to fluctuate. At this time, it is possible to further determine what the object is based on the parameter value of the target parameter. When the parameter value of the target parameter is less than or equal to the preset threshold, it may be that the metal foreign matter causes the target parameter to fluctuate greatly. In order to avoid the metal foreign matter from being placed on the wireless charging device for a long time and causing the metal foreign matter to heat up, the sending of the wake-up signal can be stopped immediately, and the foreign matter detection can be further performed by detecting the energy loss value Power loss and the quality factor value Q, etc. If it is detected that a metal foreign matter is placed on the wireless charging device, the user can be prompted to move the metal foreign matter away by lighting up or flashing the prompt light. When the parameter value of the target parameter is greater than the preset threshold, it may be that the device to be charged approaches the wireless charging device and then immediately moves away, causing the target parameter to fluctuate, but the value of the target parameter is small. At this time, the sending of the wake-up signal can also be stopped immediately, but no foreign matter detection is required.

[0100] As an optional embodiment, the preset threshold is obtained according to the following method:

[0101] After placing different objects on the wireless charging device, determining parameter values ​​of corresponding target parameters, and determining a maximum value among the parameter values;

[0102] The preset threshold is determined based on the maximum value.

[0103] For example, different objects can be placed on the wireless charging device, or standard foreign objects can be placed at various test points on the surface of the wireless charging device, and the corresponding parameter values ​​of the target parameters can be detected. It has been found through testing that when metal foreign objects or electronic devices such as mobile phones are placed on the wireless charging device, the value of the target parameter will decrease, but when the device to be charged is close to the wireless charging device but not placed on the wireless charging device, the target parameter is larger, so the maximum value of the target parameter when different foreign objects are placed on the wireless charging device can be used as the preset threshold.

[0104] See also Figure 4 , Figure 4 is a flow chart of another wireless charging method according to an exemplary embodiment. Figure 4 As shown, the wireless charging method may include the following steps.

[0105] S401, controlling the power supply to charge the wireless charging device.

[0106] S402: Send a target detection signal, and obtain a quality factor value Q and a resonant frequency value f.

[0107] S403, determine whether there is an N-order quality factor value fluctuation value greater than or equal to the quality factor fluctuation threshold Qth, or whether there is an N-order resonant frequency value fluctuation value greater than or equal to the resonant frequency fluctuation threshold fth, if so, execute step S404, otherwise execute step S402.

[0108] Among them, when the wireless charging device is in standby mode, the quality factor value and resonant frequency value of the device to be charged that is not placed on the wireless charging device are Q0 and f0 respectively, the fluctuation value of the quality factor value can be expressed as |Q0-Q|, the fluctuation value of the resonant frequency value can be expressed as |f0-f|, and N can be 2-5 times.

[0109] S404: Send a wake-up signal including a digital ping signal and an analog ping signal.

[0110] S405, determining whether a response signal to the wake-up signal is received, if yes, executing step S406, if no, executing step S407.

[0111] S406 , continuously sending energy signals including digital ping signals and analog ping signals, and entering a normal charging state.

[0112] S407, determine whether there is an N-order quality factor value Q less than or equal to the quality factor threshold Qn, or whether there is an N-order resonant frequency value f less than or equal to the resonant frequency threshold fn, if so, execute step S408, if not, stop sending the wake-up signal and execute step S402.

[0113] S408, stop sending the wake-up signal, and perform foreign object detection. If it is detected that a metal foreign object is placed on the wireless charging device, execute step S409; if it is detected that the metal foreign object is not placed on the wireless charging device, execute step S402.

[0114] S409: The prompt light flashes to prompt the user that a metal foreign object is placed on the wireless charging device, and the process returns to step S407.

[0115] For wireless charging devices on vehicles, the radiation energy limit for wireless charging devices in standby mode is relatively small, and the test equipment is required to be close to the wireless charging device during testing. Therefore, when the wireless charging device sends multiple energy signals in standby mode, the radiation energy value of the wireless charging device in standby mode exceeds the standard seriously. In order to reduce the radiation energy of wireless charging devices, the related technologies of front-mounted wireless charging devices on vehicles adopt various measures, such as metal grounding of the rear shell, increasing differential and common mode inductance, adding shielding covers, etc. These measures have certain disadvantages, such as the size of the wireless charging device will increase, the cost will increase due to the addition of hardware, and the excessive size of the wireless charging device will block the driver's field of view, etc.

[0116] As an optional embodiment, the radiation test value of the device to be charged is detected by directly sending an energy signal in the related technology as shown in Table 1 below, and the radiation energy value of the wireless charging device is tested based on the above-mentioned wireless charging method, and the radiation test value of the device to be charged is detected by sending a target detection signal using the wireless charging method disclosed in the present invention as shown in Table 2 below. Among them, the radiation test value is the radiation value of the wireless charging device obtained by the test, the environmental noise value is the noise value in the environment where the wireless charging device is located, the actual value is the sum of the radiation test value and the environmental noise value, the limit value is the maximum value that the actual value cannot exceed during the test, and the difference is the difference between the limit value and the actual value. It can be seen that when the energy signal is sent to detect the radiation test value of the device to be charged using the related technology, most of the test values ​​exceed the limit value, and some of the test values ​​exceed the limit by a large amount, for example, exceeding the limit value by 20.5dB. However, when the target detection signal is sent to detect the radiation test value of the device to be charged using the wireless charging method disclosed in the present invention, none of them exceeds the limit value, and the difference with the limit value can even be large, for example, less than the limit value of 33.7dB.

[0117] Table 1 Radiation test values ​​of the device to be charged by directly sending energy signals in the related technology

[0118]

[0119] Table 2 Radiation test values ​​of the device to be charged by sending target detection signals using the wireless charging method

[0120]

[0121] Figure 5 is a flow chart of another wireless charging method according to an exemplary embodiment. Figure 5 As shown, the method is applied to an electronic device to be charged and includes the following steps.

[0122] S501, receiving an energy signal sent by a wireless charging device to charge a device to be charged through the wireless charging device, wherein the energy signal is sent by the wireless charging device according to the following method:

[0123] In the standby state of the wireless charging device, a target detection signal is sent to the resonant cavity of the wireless charging device, and a target parameter is obtained, wherein the energy intensity of the target detection signal is less than the energy intensity that can wake up the device to be charged; when the target parameter meets the trigger condition, the placement of the device to be charged on the wireless charging device is determined; when the device to be charged is placed on the wireless charging device, the wireless charging device is controlled to send an energy signal to the device to be charged.

[0124] For example, the electronic device may enter the charging state after receiving the energy signal sent by the wireless charging device, wherein the step of the device to be charged sending the energy signal may refer to the above steps S101-S103, which will not be repeated here.

[0125] As an optional embodiment, the method further includes:

[0126] Receive a wake-up signal sent by a wireless charging device;

[0127] According to the wake-up signal, a response signal is sent to the wireless charging device, so that the wireless charging device determines that a device to be charged is placed on the wireless charging device according to the response signal.

[0128] For example, after the wireless charging device detects that the target parameter meets the corresponding trigger condition, the wireless charging device can send a wake-up signal. The energy intensity of the wake-up signal can wake up the device to be charged. After the device to be charged is awakened, it can generate a corresponding response signal based on the received wake-up signal and send it to the wireless charging device. After the wireless charging device receives the response signal, it determines that there is a device to be charged on the wireless charging device. At this time, based on the energy signal continuously output by the wireless charging device, the device to be charged enters the charging state.

[0129] Figure 6 is a block diagram of a wireless charging device according to an exemplary embodiment. Figure 6 The wireless charging apparatus can be applied to wireless charging equipment, and includes an acquisition module 601, a determination module 602 and a sending module 603.

[0130] The acquisition module 601 is configured to send a target detection signal into the resonant cavity of the wireless charging device and acquire a target parameter when the wireless charging device is in a standby state, wherein the energy intensity of the target detection signal is less than the energy intensity capable of waking up the device to be charged;

[0131] The determination module 602 is configured to determine the placement of the device to be charged on the wireless charging device when the target parameter meets the trigger condition;

[0132] The sending module 603 controls the wireless charging device to send an energy signal to the device to be charged, so as to charge the device to be charged, when a device to be charged is placed on the wireless charging device.

[0133] As an optional embodiment, the target parameter includes a quality factor, and the determination module 602 is specifically configured as follows:

[0134] When the fluctuation value of the quality factor within the first target time period is greater than or equal to the first fluctuation threshold, the placement status of the device to be charged on the wireless charging device is determined.

[0135] As an optional embodiment, the target parameter includes a resonant frequency, and the determination module 602 is specifically configured as follows:

[0136] When the fluctuation value of the resonance frequency within the second target time length is greater than or equal to the second fluctuation threshold, the placement status of the device to be charged on the wireless charging device is determined.

[0137] As an optional embodiment, the determination module 602 is specifically configured to:

[0138] When the fluctuation value of the quality factor within the third target time period is greater than or equal to the third fluctuation threshold, determining the placement of the device to be charged on the wireless charging device; or,

[0139] When the fluctuation value of the resonance frequency within the third target time length is greater than or equal to a fourth fluctuation threshold, the placement status of the device to be charged on the wireless charging device is determined.

[0140] As an optional embodiment, the wireless charging device further includes:

[0141] A fluctuation value acquisition module is configured to acquire a first fluctuation value of a corresponding quality factor and a second fluctuation value of a corresponding resonant frequency when different tested devices to be charged are connected to the wireless charging device;

[0142] The fluctuation threshold determination module is configured to determine the fluctuation threshold corresponding to the quality factor according to the smallest fluctuation value among the first fluctuation values, and to determine the fluctuation threshold corresponding to the resonance frequency according to the smallest fluctuation value among the second fluctuation values.

[0143] As an optional embodiment, the determination module 602 is specifically configured to:

[0144] Send a wake-up signal to the device to be charged;

[0145] When the wireless charging device receives the response signal sent by the device to be charged in response to the wake-up signal, it is determined that the device to be charged is placed on the wireless charging device.

[0146] As an optional embodiment, the wireless charging device further includes:

[0147] a parameter value determination module, configured to determine a parameter value of a target parameter when the wireless charging device does not receive a response signal;

[0148] The foreign object detection module is configured to stop sending the wake-up signal and control the wireless charging device to perform foreign object detection when the parameter value of the target parameter is less than or equal to a preset threshold.

[0149] As an optional embodiment, the preset threshold is obtained according to the following method:

[0150] After placing different objects on the wireless charging device, determining parameter values ​​of corresponding target parameters, and determining a maximum value among the parameter values;

[0151] The preset threshold is determined based on the maximum value.

[0152] Regarding the wireless charging device applied to the wireless charging 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 wireless charging method applied to the wireless charging device, and will not be elaborated here.

[0153] Figure 7 is a block diagram of another wireless charging device according to an exemplary embodiment. Figure 7 The wireless charging device can be applied to an electronic device to be charged, and includes a receiving module 700.

[0154] The receiving module 700 is configured to receive an energy signal sent by a wireless charging device to charge the device to be charged through the wireless charging device, wherein the energy signal is sent by the wireless charging device according to the following method:

[0155] In the standby state of the wireless charging device, a target detection signal is sent to the resonant cavity of the wireless charging device, and a target parameter is obtained, wherein the energy intensity of the target detection signal is less than the energy intensity that can wake up the device to be charged; when the target parameter meets the trigger condition, the placement of the device to be charged on the wireless charging device is determined; when the device to be charged is placed on the wireless charging device, the wireless charging device is controlled to send an energy signal to the device to be charged.

[0156] As an optional embodiment, the wireless charging device further includes:

[0157] A wake-up signal receiving module, configured to receive a wake-up signal sent by a wireless charging device;

[0158] The response signal sending module is configured to send a response signal to the wireless charging device according to the wake-up signal, so that the wireless charging device determines that a device to be charged is placed on the wireless charging device according to the response signal.

[0159] Regarding the wireless charging device applied to the electronic device to be charged in the above-mentioned embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment of the wireless charging method applied to the electronic device to be charged, and will not be elaborated here.

[0160] The present disclosure also provides a computer-readable storage medium having computer program instructions stored thereon. When the program instructions are executed by a processor, the wireless charging method for a wireless charging device provided by the present disclosure is implemented.

[0161] The present disclosure also provides a computer-readable storage medium on which computer program instructions are stored. When the program instructions are executed by a processor, the wireless charging method provided by the present disclosure and applied to an electronic device to be charged is implemented.

[0162] The present disclosure also provides a wireless charging device, comprising:

[0163] a storage device including a computer program;

[0164] The processing device is used to execute a computer program to implement the wireless charging method applied to a wireless charging device provided in the present disclosure.

[0165] The present disclosure also provides an electronic device, comprising:

[0166] a storage device including a computer program;

[0167] A processing device is used to execute a computer program to implement the wireless charging method provided by the present disclosure and applied to an electronic device to be charged.

[0168] The present disclosure also provides a wireless charging system, comprising:

[0169] A wireless charging device applied to a wireless charging device as provided in the present disclosure;

[0170] And, a wireless charging device applied to an electronic device to be charged as provided in the present disclosure.

[0171] Figure 88 is a block diagram of an electronic device 800 according to an exemplary embodiment. For example, the electronic device 800 may be a mobile phone, a tablet device, a personal digital assistant, etc.

[0172] Reference Figure 8 , the electronic device 800 may include one or more of the following components: a processing component 802 , a memory 804 , a power component 806 , a multimedia component 808 , an audio component 810 , an input / output interface 812 , a sensor component 814 , and a communication component 816 .

[0173] The processing component 802 generally controls the overall operation of the electronic device 800, such as operations associated with display, phone calls, data communications, camera operations, and recording operations. The processing component 802 may include one or more processors 820 to execute instructions to complete all or part of the steps of the wireless charging method for the electronic device to be charged. In addition, the processing component 802 may include one or more modules to facilitate the interaction between the processing component 802 and other components. For example, the processing component 802 may include a multimedia module to facilitate the interaction between the multimedia component 808 and the processing component 802.

[0174] The memory 804 is configured to store various types of data to support operations on the electronic device 800. Examples of such data include instructions for any application or method operating on the electronic device 800, contact data, phone book data, messages, pictures, videos, etc. The memory 804 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.

[0175] The power supply component 806 provides power to the various components of the electronic device 800. The power supply component 806 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to the electronic device 800.

[0176] The multimedia component 808 includes a screen that provides an output interface between the electronic device 800 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 808 includes a front camera and / or a rear camera. When the electronic device 800 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 rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.

[0177] The audio component 810 is configured to output and / or input audio signals. For example, the audio component 810 includes a microphone (MIC), and when the electronic device 800 is in an operating mode, such as a call mode, a recording mode, and a voice recognition mode, the microphone is configured to receive an external audio signal. The received audio signal can be further stored in the memory 804 or sent via the communication component 816. In some embodiments, the audio component 810 also includes a speaker for outputting audio signals.

[0178] The input / output interface 812 provides an interface between the processing component 802 and the peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include but are not limited to: a home button, a volume button, a start button, and a lock button.

[0179] The sensor assembly 814 includes one or more sensors for providing various aspects of status assessment for the electronic device 800. For example, the sensor assembly 814 can detect the open / closed state of the electronic device 800, the relative positioning of the components, such as the display and keypad of the electronic device 800, and the sensor assembly 814 can also detect the position change of the electronic device 800 or a component of the electronic device 800, the presence or absence of contact between the user and the electronic device 800, the orientation or acceleration / deceleration of the electronic device 800, and the temperature change of the electronic device 800. The sensor assembly 814 may include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor assembly 814 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 814 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0180] The communication component 816 is configured to facilitate wired or wireless communication between the electronic device 800 and other devices. The electronic device 800 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 816 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 816 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.

[0181] In an exemplary embodiment, the electronic device 800 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 execute the above-mentioned wireless charging method applied to the electronic device to be charged.

[0182] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 804 including instructions, and the instructions can be executed by a processor 820 of an electronic device 800 to complete the wireless charging method applied to the electronic device to be charged. 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.

[0183] In another exemplary embodiment, a computer program product is also provided. The computer program product includes a computer program that can be executed by a programmable device. The computer program has a code portion for executing the above-mentioned wireless charging method applied to an electronic device to be charged when executed by the programmable device.

[0184] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the present disclosure. The present disclosure is intended to cover any variations, uses or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The description and examples are to be considered as exemplary only, and the true scope and spirit of the present disclosure are indicated by the following claims.

[0185] It should be understood that the present disclosure is not limited to the exact structures that have 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 disclosure is limited only by the appended claims.

Claims

1. A wireless charging method, characterized in that: include: In a standby state of the wireless charging device, a target detection signal is sent into a resonant cavity of the wireless charging device, and a target parameter is obtained, wherein the energy intensity of the target detection signal is less than the energy intensity capable of waking up the device to be charged; When the target parameter meets the trigger condition, determining the placement of the device to be charged on the wireless charging device; When a device to be charged is placed on the wireless charging device, the wireless charging device is controlled to send an energy signal to the device to be charged, so as to charge the device to be charged.

2. The method according to claim 1, characterized in that The target parameter includes a quality factor. When the target parameter meets a trigger condition, determining the placement of the device to be charged on the wireless charging device includes: When the fluctuation value of the quality factor within the first target time period is greater than or equal to a first fluctuation threshold, the placement status of the device to be charged on the wireless charging device is determined.

3. The method according to claim 1, characterized in that The target parameter includes a resonant frequency. When the target parameter meets a trigger condition, determining the placement of the device to be charged on the wireless charging device includes: When the fluctuation value of the resonant frequency within the second target time length is greater than or equal to a second fluctuation threshold, the placement status of the device to be charged on the wireless charging device is determined.

4. The method according to claim 1, characterized in that: The target parameters include a quality factor and a resonant frequency. When the target parameters meet a trigger condition, determining the placement of the device to be charged on the wireless charging device includes: When the fluctuation value of the quality factor within the third target time is greater than or equal to the third fluctuation threshold, determining the placement of the device to be charged on the wireless charging device; or, When the fluctuation value of the resonant frequency within the third target time period is greater than or equal to a fourth fluctuation threshold, the placement status of the device to be charged on the wireless charging device is determined.

5. The method according to any one of claims 2 to 4, characterized in that: The method further comprises: When different test devices to be charged are connected to the wireless charging device, a first fluctuation value of a corresponding quality factor and a second fluctuation value of a corresponding resonant frequency are obtained; A fluctuation threshold corresponding to the quality factor is determined according to the smallest fluctuation value among the first fluctuation values, and a fluctuation threshold corresponding to the resonance frequency is determined according to the smallest fluctuation value among the second fluctuation values.

6. The method according to any one of claims 1 to 4, characterized in that: Determining the placement of the device to be charged on the wireless charging device includes: Sending a wake-up signal to the device to be charged; When the wireless charging device receives the response signal sent by the device to be charged in response to the wake-up signal, it is determined that the device to be charged is placed on the wireless charging device.

7. The method according to claim 6, characterized in that The method further comprises: When the wireless charging device does not receive the response signal, determining a parameter value of the target parameter; When the parameter value of the target parameter is less than or equal to a preset threshold, the sending of the wake-up signal is stopped, and the wireless charging device is controlled to perform foreign object detection.

8. The method according to claim 7, characterized in that The preset threshold is obtained according to the following method: After placing different objects on the wireless charging device, determining the corresponding parameter values ​​of the target parameters, and determining the maximum value among the parameter values; The preset threshold is determined according to the maximum value.

9. A wireless charging method, characterized in that: include: Receive an energy signal sent by a wireless charging device to charge a device to be charged through the wireless charging device, wherein the energy signal is sent by the wireless charging device according to the following method: In the standby state of the wireless charging device, a target detection signal is sent into the resonant cavity of the wireless charging device, and a target parameter is obtained, wherein the energy intensity of the target detection signal is less than the energy intensity that can wake up the device to be charged; when the target parameter meets the trigger condition, the placement of the device to be charged on the wireless charging device is determined; when the device to be charged is placed on the wireless charging device, the wireless charging device is controlled to send the energy signal to the device to be charged.

10. The method according to claim 9, characterized in that The method further comprises: Receiving a wake-up signal sent by the wireless charging device; According to the wake-up signal, a response signal is sent to the wireless charging device, so that the wireless charging device determines that the device to be charged is placed on the wireless charging device according to the response signal.

11. A wireless charging device, characterized in that: include: an acquisition module, configured to send a target detection signal into a resonant cavity of the wireless charging device and acquire a target parameter when the wireless charging device is in a standby state, wherein the energy intensity of the target detection signal is less than an energy intensity capable of waking up the device to be charged; A determination module, configured to determine the placement of the device to be charged on the wireless charging device when the target parameter meets the trigger condition; The sending module controls the wireless charging device to send an energy signal to the device to be charged when a device to be charged is placed on the wireless charging device, so as to charge the device to be charged.

12. A wireless charging device, characterized in that: include: The receiving module is configured to receive an energy signal sent by a wireless charging device to charge a device to be charged through the wireless charging device, wherein the energy signal is sent by the wireless charging device according to the following method: In the standby state of the wireless charging device, a target detection signal is sent to the resonant cavity of the wireless charging device, and a target parameter is obtained, wherein the energy intensity of the target detection signal is less than the energy intensity that can wake up the device to be charged; when the target parameter meets the trigger condition, the placement of the device to be charged on the wireless charging device is determined; when the device to be charged is placed on the wireless charging device, the wireless charging device is controlled to send the energy signal to the device to be charged.

13. A computer-readable storage medium having computer program instructions stored thereon, characterized in that: When the program instructions are executed by a processor, the wireless charging method described in any one of claims 1 to 8 is implemented.

14. A computer-readable storage medium having computer program instructions stored thereon, characterized in that: When the program instructions are executed by the processor, the wireless charging method described in claim 9 or 10 is implemented.

15. A wireless charging device, characterized in that: include: a storage device including a computer program; A processing device, used to execute the computer program to implement the wireless charging method according to any one of claims 1 to 8.

16. An electronic device, characterized in that: include: a storage device including a computer program; A processing device, used to execute the computer program to implement the wireless charging method according to claim 9 or 10.

17. A wireless charging system, characterized in that: include: The wireless charging device as claimed in claim 11; And, the wireless charging device as claimed in claim 12.

Images