Wireless charging method and device, electronic equipment and storage medium

Abstract

The invention relates to a wireless charging method and device, electronic equipment and a storage medium, and the method comprises the steps: obtaining a first foreign matter detection parameter corresponding to first electronic equipment which is powered equipment; if it is determined that a foreign matter exists between the first electronic device and a second electronic device based on the first foreign matter detection parameter, whether the foreign matter meets a specified condition or not is determined, and the second electronic device is a power supply device; and determining that the foreign matter meets a specified condition, and reducing the receiving power of the first electronic equipment. According to the invention, the freedom degree of wireless charging can be ensured and the risk of overtemperature can be reduced by reducing the power under the condition that the existence of the foreign matter under the specified condition is determined.

Description

Technical Field

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

[0002] With the development of terminal technology, most electronic devices can support wireless charging. When using wireless charging devices to charge electronic devices, there may be foreign objects (FO) between the electronic devices and the wireless charging devices. During the charging process, the foreign objects may generate eddy currents, causing the temperature of the foreign objects to rise, affecting the safety of the charging process. In related technologies, wireless charging devices will perform foreign object detection during wireless charging, and stop charging when it is determined that there are foreign objects. However, this processing method is relatively simple. 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, electronic device and storage medium.

[0004] According to a first aspect of an embodiment of the present disclosure, there is provided a wireless charging method, including:

[0005] Acquire a first foreign object detection parameter corresponding to a first electronic device, where the first electronic device is a powered device;

[0006] If it is determined based on the first foreign object detection parameter that there is a foreign object between the first electronic device and the second electronic device, then determining whether the foreign object meets a specified condition, and the second electronic device is a power supply device;

[0007] It is determined that the foreign object meets a specified condition, and the receiving power of the first electronic device is reduced.

[0008] Optionally, reducing the receiving power of the first electronic device includes:

[0009] The receiving power of the first electronic device is reduced based on the first foreign object detection parameter.

[0010] Optionally, the first foreign object detection parameter includes a quality factor of a resonant cavity, and reducing the receiving power of the first electronic device based on the first foreign object detection parameter includes:

[0011] Obtaining a first power adjustment level corresponding to the quality factor of the resonant cavity;

[0012] The receiving power of the first electronic device is reduced according to the first power adjustment level.

[0013] Optionally, the first foreign object detection parameter further includes a surface temperature of the first electronic device, and reducing the receiving power of the first electronic device based on the first foreign object detection parameter includes:

[0014] Acquire a second power adjustment level corresponding to the surface temperature of the first electronic device;

[0015] The receiving power of the first electronic device is reduced according to the second power adjustment level.

[0016] Optionally, the first foreign object detection parameter also includes a resonant frequency value.

[0017] Optionally, the method further comprises:

[0018] receiving a power adjustment signal sent by the second electronic device;

[0019] The receiving power of the first electronic device is reduced according to the power adjustment signal.

[0020] Optionally, the foreign matter satisfies a specified condition including at least one of the following:

[0021] The offset between the first electronic device and the second electronic device is greater than a first preset distance, and the first electronic device is regarded as the foreign object;

[0022] The offset between the first type of foreign object and the second electronic device is greater than a second preset distance;

[0023] The offset between the second type of foreign object and the second electronic device is smaller than a third preset distance, and the size of the second type of foreign object is smaller than the size of the first type of foreign object.

[0024] Optionally, the determining that the foreign object meets a specified condition and reducing the receiving power of the first electronic device includes:

[0025] Determine that the foreign object meets a specified condition, and obtain a power processing strategy corresponding to the specified condition;

[0026] The received power of the first electronic device is reduced based on the power handling strategy.

[0027] According to a second aspect of an embodiment of the present disclosure, there is provided a wireless charging method, including:

[0028] Acquire a second foreign object detection parameter corresponding to the second electronic device, where the second electronic device is a power supply device;

[0029] If it is determined based on the second foreign object detection parameter that there is a foreign object between the second electronic device and the first electronic device, determining whether the foreign object meets a specified condition and the first electronic device is a powered device;

[0030] It is determined that the foreign object meets a specified condition, and the transmission power of the second electronic device is reduced.

[0031] Optionally, the method further comprises:

[0032] A power adjustment signal is sent to the first electronic device to instruct the first electronic device to reduce receiving power.

[0033] Optionally, the second foreign object detection parameter includes at least one of a quality factor, a resonant frequency value, a surface temperature and a power loss difference of the resonant cavity.

[0034] Optionally, the foreign matter satisfies a specified condition including at least one of the following:

[0035] The offset between the first electronic device and the second electronic device is greater than a first preset distance, and the first electronic device is regarded as the foreign object;

[0036] The offset between the first type of foreign object and the second electronic device is greater than a second preset distance;

[0037] The offset between the second type of foreign object and the second electronic device is smaller than a third preset distance, and the size of the second type of foreign object is smaller than the size of the first type of foreign object.

[0038] Optionally, the determining that the foreign object meets a specified condition and reducing the transmission power of the second electronic device includes:

[0039] Determine that the foreign object meets a specified condition, and obtain a power processing strategy corresponding to the specified condition;

[0040] The transmit power of the second electronic device is reduced based on the power handling strategy.

[0041] According to a third aspect of an embodiment of the present disclosure, there is provided a wireless charging device, including:

[0042] A first acquisition module is configured to acquire a first foreign object detection parameter corresponding to a first electronic device, where the first electronic device is a powered device;

[0043] A first determination module is configured to determine whether the foreign object satisfies a specified condition if it is determined based on the first foreign object detection parameter that there is a foreign object between the first electronic device and the second electronic device, and the second electronic device is a power supply device;

[0044] The first reducing module is configured to determine that the foreign object meets a specified condition and reduce the receiving power of the first electronic device.

[0045] According to a fourth aspect of an embodiment of the present disclosure, there is provided a wireless charging device, including:

[0046] A second acquisition module is configured to acquire a second foreign object detection parameter corresponding to a second electronic device, where the second electronic device is a power supply device;

[0047] A second determination module is configured to determine whether the foreign object satisfies a specified condition and the first electronic device is a powered device if it is determined based on the second foreign object detection parameter that there is a foreign object between the second electronic device and the first electronic device;

[0048] The second reducing module is configured to determine that the foreign object meets a specified condition and reduce the transmission power of the second electronic device.

[0049] According to a fifth aspect of an embodiment of the present disclosure, there is provided an electronic device, including:

[0050] processor;

[0051] a memory for storing processor-executable instructions;

[0052] The processor is configured to execute the executable instructions to implement the steps of the wireless charging method provided in the first aspect and the second aspect of the present disclosure.

[0053] According to a sixth aspect of an embodiment of the present disclosure, a computer-readable storage medium is provided, on which computer program instructions are stored. When the program instructions are executed by a processor, the steps of the wireless charging method provided in the first and second aspects of the present disclosure are implemented.

[0054] When the present invention determines that there is a foreign object between the first electronic device and the second electronic device through the first foreign object detection parameter, if it is determined that the foreign object meets the specified conditions, the receiving power of the first electronic device can be reduced. This not only ensures the freedom of wireless charging, but also reduces the risk of overheating and avoids burns to users.

[0055] 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

[0056] 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.

[0057] Figure 1 The figure is a diagram showing an example of a wireless charging process according to an exemplary embodiment.

[0058] Figure 2 The figure is a flow chart of a wireless charging method according to an exemplary embodiment.

[0059] Figure 3 is an exemplary diagram showing the presence of small metal foreign matter in a wireless charging method according to an exemplary embodiment.

[0060] Figure 4 The figure is an example diagram showing that a receiving end is offset in a wireless charging method according to an exemplary embodiment.

[0061] Figure 5 The figure is an example diagram showing that a foreign object of a normal size is deflected in a wireless charging method according to an exemplary embodiment.

[0062] Figure 6 This is an example diagram showing a small-sized foreign object approaching the center of a transmitting end in a wireless charging method according to an exemplary embodiment.

[0063] Figure 7 is a flow chart of another wireless charging method according to an exemplary embodiment.

[0064] Figure 8 The figure is a diagram showing an example of a wireless charging process according to an exemplary embodiment.

[0065] Fig. 9 is a block diagram of a wireless charging device according to an exemplary embodiment.

[0066] Fig.10 is a block diagram of a wireless charging device according to an exemplary embodiment.

[0067] Fig.11 It is a block diagram of an electronic device according to an exemplary embodiment. DETAILED DESCRIPTION

[0068] 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.

[0069] In the description of the present disclosure, the terms used, such as "first", "second", etc., are used to distinguish similar objects and are not necessarily understood as a specific order or sequence. In addition, in the description with reference to the accompanying drawings, the same symbols in different drawings represent the same elements unless otherwise stated.

[0070] Although operations or steps are described in a specific order in the drawings in the embodiments of the present disclosure, it should not be understood that it is required to perform these operations or steps in the specific order shown or in a serial order, or to perform all the operations or steps shown to obtain the desired results. In the embodiments of the present disclosure, these operations or steps can be performed in series; these operations or steps can also be performed in parallel; or some of these operations or steps can be performed.

[0071] With the popularization of wireless charging technology, the demand for charging power of electronic devices such as mobile phones is gradually increasing, and the requirements for foreign object detection are also increasing. For example, when small foreign objects such as rings are placed in a high-power wireless charging area, there is a risk of burns due to the rapid temperature rise caused by the eddy current effect.

[0072] The current foreign body detection method usually stops the wireless charging power transmission after detecting a metal foreign body to prevent the metal foreign body from continuing to heat up. However, in order to be able to identify small-sized metal foreign bodies, this method needs to shrink the freedom of wireless charging, which will cause the receiving end to be misidentified as a small-sized metal foreign body when it is misplaced. In other words, when the receiving end is misplaced, the metal components such as the motherboard, battery, and metal mechanical structure in the receiving end structure will have the same properties as small-sized metal foreign bodies, thereby erroneously triggering the protection stop charging and affecting normal charging. On the contrary, if small-sized metal foreign bodies are not detected, when the foreign body is placed in the wireless charging area for high-power or full-power wireless charging, although the foreign body is small in size, there is also a risk of overheating.

[0073] During wireless charging, if there is a metal foreign object between the transmitter and the receiver, the metal foreign object will be heated due to the vortex effect caused by the magnetic field during the wireless charging power transmission process. Figure 1 As shown in the figure, RX Coil is the receiving coil; TX Coil is the transmitting coil; FM (Friendly metal) is the metal inherent in the design of the receiving end structure, etc.; FO (Foreign Object) refers to metal foreign matter.

[0074] In summary, foreign object detection mainly stops wireless charging power transmission after detecting metal foreign objects to prevent the metal foreign objects from being heated. However, when the receiving end is offset, its internal metal components such as the motherboard, battery, metal mechanical structure, etc. may also be identified as metal foreign objects. At this time, directly stopping the wireless charging power transmission will affect normal charging and reduce the user experience. In addition, when ordinary metal foreign objects are offset or small foreign objects are placed close to the center of the transmitter, there is a risk of burns.

[0075] Figure 2 is a flow chart of a wireless charging method according to an exemplary embodiment. Figure 2As shown, the wireless charging method is used in a first electronic device and includes the following steps.

[0076] In step S210, a first foreign object detection parameter corresponding to the first electronic device is obtained.

[0077] In the embodiment of the present disclosure, the first electronic device may include Figure 3 The receiving end coil (RXCoil) shown in the figure can determine whether there is a foreign body between the first electronic device and the second electronic device through the first foreign body detection parameter. Figure 3 The second electronic device may include Figure 3 The transmitter coil (TX Coil) shown. Here, the first electronic device can be a receiving end, and the second electronic device can be a transmitting end. In other words, the first electronic device can be a powered device, and the second electronic device can be a powered device.

[0078] As an optional manner, the first foreign object detection parameter may include at least one of a quality factor (Q value) of the resonant cavity, a surface temperature of the first electronic device, and a resonant frequency value. After acquiring the first foreign object detection parameter, the first electronic device may determine whether there is a foreign object between the first electronic device and the second electronic device according to the first foreign object detection parameter, that is, enter step S220.

[0079] In step S220, if it is determined based on the first foreign object detection parameter that there is a foreign object between the first electronic device and the second electronic device, it is determined whether the foreign object meets a specified condition.

[0080] In some embodiments, the first electronic device may determine whether there is a foreign object between it and the second electronic device based on the quality factor of the resonant cavity in the first foreign object detection parameter. Specifically, the first electronic device may determine whether the quality factor of the resonant cavity is less than a first preset quality factor, and if it is determined that the quality factor of the resonant cavity is less than the first preset quality factor, it is determined that there is a foreign object between the first electronic device and the second electronic device.

[0081] In other embodiments, the first electronic device may determine whether there is a foreign object between it and the second electronic device based on the quality factor and the resonant frequency value of the resonant cavity in the first foreign object detection parameter. Specifically, the first electronic device may determine whether the quality factor of the resonant cavity is less than the first preset quality factor, and determine whether the resonant frequency value is greater than the first preset frequency value. If it is determined that the quality factor of the resonant cavity is less than the first preset quality factor, and the resonant frequency value is greater than the first preset frequency value, it is determined that there is a foreign object between the first electronic device and the second electronic device.

[0082] Optionally, when the first electronic device cannot determine whether there is a foreign object between the first electronic device and the second electronic device through the quality factor of the resonant cavity, the disclosed embodiment can be determined based on the resonant frequency value. Specifically, it is determined whether the resonant frequency value is greater than a first preset frequency value, and if it is determined that the resonant frequency value is greater than the first preset frequency value, it is determined that there is a foreign object between the first electronic device and the second electronic device.

[0083] In other embodiments, the first electronic device may determine whether there is a foreign object between it and the second electronic device based on the surface temperature of the first electronic device in the first foreign object detection parameter. Specifically, the first electronic device may determine whether the surface temperature of the first electronic device exceeds a first preset temperature. If it is determined that the surface temperature of the first electronic device exceeds the first preset temperature, it is determined that there is a foreign object between the first electronic device and the second electronic device. A temperature detection device may be provided on the rear shell of the first electronic device, and the temperature detection device may be used to detect the temperature on the rear shell, and the temperature may be used as the surface temperature of the first electronic device.

[0084] As an optional method, when it is determined that there is a foreign object between the first electronic device and the second electronic device based on the first foreign object detection parameter, the embodiment of the present disclosure can also determine whether there is a foreign object of a specified condition between the first electronic device and the second electronic device, that is, determine whether the foreign object meets the specified condition.

[0085] It should be noted that the embodiments of the present disclosure can determine whether there is a foreign object that meets a specified condition during the process of detecting whether there is a foreign object between the first electronic device and the second electronic device, or can determine whether the foreign object meets a specified condition when a foreign object is detected between the first electronic device and the second electronic device. The specific time for determining whether the foreign object meets the specified condition is not explicitly limited here and can be selected according to actual conditions.

[0086] In the embodiment of the present disclosure, the foreign object meeting the specified conditions may include at least one of the following: the foreign object meets the first specified condition: the offset between the first electronic device and the second electronic device is greater than the first preset distance, at which time the second electronic device may regard the first electronic device as a foreign object, wherein the offset between the first electronic device and the second electronic device may be the distance between the center of the first electronic device and the center of the second electronic device; the foreign object meets the second specified condition: the offset between the first type of foreign object and the second electronic device is greater than the second preset distance, wherein the offset between the first type of foreign object and the second electronic device may be the distance between the center of the first type of foreign object and the center of the second electronic device; the foreign object meets the third specified condition: the offset between the second type of foreign object and the second electronic device is less than the third preset distance, and the offset between the second type of foreign object and the second electronic device may be the distance between the center of the second type of foreign object and the center of the second electronic device. Here, the size of the second type of foreign object is smaller than the size of the first type of foreign object.

[0087] Specifically, in the process of charging the first electronic device by the second electronic device, when the first electronic device is placed off-center, such as Figure 4 As shown, the metal components such as the motherboard, battery, and metal mechanical structure inside the first electronic device may be identified as metal foreign matter, and the metal features presented by these metal components are similar to those of small-sized metal foreign matter. At this time, in order to ensure the continuation of the charging process, the embodiment of the present disclosure can reduce the receiving power of the first electronic device.

[0088] In other words, when it is determined that the offset between the first electronic device and the second electronic device is greater than the first preset distance, the embodiment of the present disclosure may not directly stop charging, but reduce the receiving power of the first electronic device. Exemplarily, the small-sized metal foreign object may be a ring, a dime, or the like.

[0089] Optionally, in the process of charging the first electronic device by the second electronic device, when it is determined that there is a foreign object of normal size between the first electronic device and the second electronic device, and the foreign object of normal size is placed off-center, in order to ensure the safety of charging, the embodiment of the present disclosure can reduce the receiving power of the first electronic device, as detailed in Figure 5 Here, the characteristics of the normal-sized metal foreign matter being deflected in the charging area are similar to the above-mentioned first electronic device being deflected and the presence of small metal foreign matter. Exemplarily, the normal-sized metal foreign matter can be a 5-cent coin, a metal sheet, and the like.

[0090] In other words, when it is determined that there is a first type of foreign object between the first electronic device and the second electronic device, and the offset between the first type of foreign object and the second electronic device is greater than the second preset distance, the embodiment of the present disclosure can reduce the receiving power of the first electronic device, thereby preventing the temperature of the foreign object from being too high and burning the user.

[0091] Optionally, in the process of charging the first electronic device by the second electronic device, when it is determined that there is a small foreign object between the first electronic device and the second electronic device, and the small foreign object is placed in the center of the charging area, in order to ensure the safety of charging, the embodiment of the present disclosure can reduce the receiving power of the first electronic device, as detailed in Figure 6 In other words, when it is determined that there is a second type of foreign object between the first electronic device and the second electronic device, and the offset between the second type of foreign object and the second electronic device is less than the third preset distance, the embodiment of the present disclosure can reduce the receiving power of the first electronic device, thereby preventing the temperature of the foreign object from being too high and burning the user.

[0092] In addition, the size of the second type of foreign matter is smaller than that of the first type of foreign matter, that is, the second type of foreign matter may be a small-sized foreign matter, and the first type of foreign matter may be a normal-sized foreign matter. In summary, if the foreign matter satisfies at least one of the above three specified conditions, the embodiment of the present disclosure can reduce the receiving power of the first electronic device. Here, the three specified conditions can be Figure 4 The receiving end (first electronic device) is shown as biased. Figure 5 The deviation of the common size foreign matter shown and Figure 6 The presence of small foreign objects is shown.

[0093] It should be noted that the first preset distance, the second preset distance and the third preset distance may be the same or different, which shall be subject to the actual situation.

[0094] The properties of the foreign matter in the above three specified situations are similar, so these three situations can be collectively referred to as small metal foreign matter properties. Among them, the properties may include the quality factor, surface temperature and resonant frequency value of the resonant cavity. Therefore, the embodiment of the present disclosure determines whether the foreign matter meets the specified situation or not, and it can also be determined whether the foreign matter has the small metal foreign matter property. If it is determined that the foreign matter has the small metal foreign matter property, it is determined that the foreign matter meets the specified situation, and the receiving power of the first electronic device is reduced, that is, entering step S230.

[0095] In step S230, it is determined that the foreign object meets a specified condition, and the receiving power of the first electronic device is reduced.

[0096] As an optional method, when it is determined that there is a foreign object between the first electronic device and the second electronic device that meets the specified conditions, the embodiment of the present disclosure can reduce the receiving power of the first electronic device. In this way, not only can the wireless charging be ensured, but also the risk of the user being burned by the foreign object during the charging process can be reduced.

[0097] It should be noted that when it is determined that the foreign object meets the specified conditions, the first electronic device can output foreign object prompt information, and the foreign object prompt information can be output by vibration or voice, etc. In addition, after the foreign object prompt information is output for a specified period of time, if it is detected that the foreign object that meets the specified conditions is still present, the embodiment of the present disclosure can reduce the receiving power of the first electronic device.

[0098] Optionally, when it is determined that the foreign object meets the specified conditions, the first electronic device can detect whether someone is approaching. If it is determined that someone is approaching, foreign object prompt information is output, and the foreign object prompt information can be output by vibration or voice.

[0099] Optionally, when it is determined that the foreign object meets the specified condition, the embodiment of the present disclosure can first obtain the temperature of the foreign object, and output foreign object prompt information when the temperature does not exceed the specified threshold. In addition, when it is determined that the temperature exceeds the specified threshold, the first electronic device can reduce the receiving power of the first electronic device.

[0100] In summary, when performing foreign object detection, the receiver will usually identify the deviation as a small metal foreign object, and the wireless charging system will stop power transmission. On the contrary, if small-sized metal foreign objects are not detected, when foreign objects are placed in the wireless charging area for high-power or full-power wireless charging, as the power increases, even small-sized foreign objects will have the risk of overheating.

[0101] As another optional method, when it is determined that the foreign object meets the specified conditions, the first electronic device can instruct the second electronic device to increase the air volume to reduce the temperature of the foreign object through the air volume. Here, the air volume of the second electronic device can be related to the size of the foreign object, the distance between the foreign object and the center of the charging area, etc. For example, the larger the size of the foreign object, the larger the corresponding air volume. For another example, the closer the foreign object is to the center of the charging area, the larger the corresponding air volume.

[0102] In addition, when it is determined that the first electronic device is equipped with an air vent and the foreign object is near the air vent, the first electronic device may also reduce the temperature of the foreign object by increasing the air volume.

[0103] Optionally, after reducing the temperature of the foreign object by air volume, the disclosed embodiment can obtain the temperature of the foreign object again, and if it is determined that the temperature exceeds the temperature threshold, the receiving power of the first electronic device is reduced. This can not only meet the freedom of wireless charging, but also meet the requirement that small metal foreign objects placed in the charging area will not exceed the temperature.

[0104] Optionally, the disclosed embodiment may also determine a corresponding power processing strategy according to the specified conditions satisfied by the foreign object, and on this basis, reduce the receiving power of the first electronic device according to the corresponding power processing strategy. In other words, different specified conditions satisfied by the foreign object will result in different corresponding strategies for reducing the receiving power of the first electronic device.

[0105] Through the above introduction, it is known that the specified conditions satisfied by the foreign object may include a first specified condition, a second specified condition and a third specified condition. When it is determined that the foreign object satisfies the first specified condition, it means that the first electronic device is misaligned, and the power processing strategy obtained at this time may be not to reduce the receiving power of the first electronic device, or to reduce the receiving power of the first electronic device by a first preset power.

[0106] Optionally, when it is determined that the foreign object meets the second specified condition, it means that there is a foreign object of normal size that is offset between the first electronic device and the second electronic device, and the power processing strategy obtained at this time can reduce the receiving power of the first electronic device by a second preset power. The second preset power can be greater than the first preset power.

[0107] Optionally, when it is determined that the foreign object meets the third specified condition, it indicates that there is a small-sized foreign object between the first electronic device and the second electronic device. At this time, the power processing strategy obtained can reduce the receiving power of the first electronic device by a third preset power. The third preset power can be greater than the second preset power. Alternatively, when it is determined that the foreign object meets the second specified condition or the third specified condition, the embodiment of the present disclosure can also directly stop charging.

[0108] It should be noted that, when it is determined that the foreign object does not meet the specified conditions, the embodiment of the present disclosure can stop charging, where the specified conditions may be that the foreign object is a large metal foreign object. In addition, the receiving power of the first electronic device can also be called the load power.

[0109] When the present disclosure determines that there is a foreign object between the first electronic device and the second electronic device through the first foreign object detection parameter, if it is determined that the foreign object meets the specified conditions, the receiving power of the first electronic device can be reduced, which can not only ensure the freedom of wireless charging, but also reduce the risk of overheating and avoid burns to users. The embodiments of the present disclosure can reduce different powers according to different conditions met by the foreign object, so that the battery can be charged more flexibly and effectively.

[0110] Figure 7 is a flow chart of another wireless charging method according to an exemplary embodiment. Figure 7 As shown, the wireless charging method is used in a first electronic device and includes the following steps.

[0111] In step S710, a first foreign object detection parameter corresponding to the first electronic device is obtained.

[0112] In step S720, if it is determined based on the first foreign object detection parameter that there is a foreign object between the first electronic device and the second electronic device, it is determined whether the foreign object meets a specified condition.

[0113] The specific implementation of step S710 to step S720 has been described in detail in the above embodiment, and will not be repeated here.

[0114] In step S730, it is determined that the foreign object meets a specified condition, and the receiving power of the first electronic device is reduced based on the first foreign object detection parameter.

[0115] As an optional manner, when the first electronic device determines that a foreign object that meets a specified condition exists between the first electronic device and the second electronic device, the first electronic device may reduce the receiving power of the first electronic device based on the first foreign object detection parameter.

[0116] In some embodiments, the first foreign object detection parameter may include a quality factor of the resonant cavity, and when reducing the received power of the first electronic device according to the first foreign object detection parameter, the embodiment of the present disclosure may first obtain a first power adjustment level corresponding to the quality factor of the resonant cavity, and on this basis, reduce the received power of the first electronic device according to the first power adjustment level.

[0117] As an example, the first power adjustment level may include level one, level two, and level three, wherein the quality factor corresponding to level one is in the range of 45 to 60; the quality factor corresponding to level two is 30 to 45; and the quality factor corresponding to level three is <30. If it is determined that the level corresponding to the quality factor of the resonant cavity is level one, the receiving power of the first electronic device is reduced to 10W; if it is determined that the level corresponding to the quality factor of the resonant cavity is level two, the receiving power of the first electronic device is reduced to 5W; if the level corresponding to the quality factor of the resonant cavity is level three, the wireless charging power transmission may be stopped.

[0118] In some other embodiments, the first foreign object detection parameter may further include the surface temperature of the first electronic device. When reducing the receiving power of the first electronic device according to the first foreign object detection parameter, the embodiment of the present disclosure may first obtain a second power adjustment level corresponding to the surface temperature of the first electronic device. On this basis, the receiving power of the first electronic device is reduced according to the second power adjustment level.

[0119] In other words, if the surface temperature of the first electronic device is different, the corresponding receiving power of the first electronic device may also be different. The receiving power of the first electronic device may be inversely proportional to the surface temperature of the first electronic device, that is, the greater the surface temperature of the first electronic device, the smaller the corresponding receiving power of the first electronic device. For example, when the surface temperature of the first electronic device is T1, the receiving power of the first electronic device is 10W; when the surface temperature of the first electronic device is T2, the receiving power of the first electronic device is 5W, where T1 <T2。

[0120] In other embodiments, the first foreign object detection parameter may also include a resonant frequency value. When reducing the received power of the first electronic device according to the first foreign object detection parameter, the embodiment of the present disclosure may first obtain a third power adjustment level corresponding to the resonant frequency value. On this basis, the received power of the first electronic device is reduced according to the third power adjustment level. Here, the resonant frequency value may be proportional to the received power of the first electronic device. The process of reducing the received power according to the resonant frequency value is similar to the quality factor of the resonant cavity, and will not be repeated here.

[0121] The embodiment of the present disclosure can reduce the receiving power of the first electronic device in combination with the at least one first foreign body detection parameter, such as reducing the receiving power in combination with the quality factor of the resonant cavity and the surface temperature of the device. The specific combination is not explicitly limited here and can be selected according to actual conditions.

[0122] As another optional method, the first electronic device may receive a power adjustment signal from the second electronic device, and reduce the receiving power of the first electronic device according to the power adjustment signal. Here, the power adjustment signal may be a signal sent to the first electronic device after the second electronic device determines that there is a foreign object between it and the first electronic device that meets a specified condition according to the second foreign object detection parameter it obtains.

[0123] When the present disclosure determines that there is a foreign object between the first electronic device and the second electronic device through the first foreign object detection parameter, if it is determined that the foreign object meets the specified conditions, the receiving power of the first electronic device can be reduced, which not only ensures the freedom of wireless charging, but also reduces the risk of overheating and avoids burns to users. In addition, when the properties of small metal foreign objects are identified (such as when the receiving end is offset), the present disclosure reduces the power of wireless charging, thereby reducing the intensity of the magnetic field, and further reduces the eddy current effect of the small metal foreign object, thereby reducing the temperature of the small metal foreign object. At the same time, when the receiving end is offset, the first electronic device can also perform low-power wireless charging, so that the freedom of wireless charging can be guaranteed.

[0124] Figure 8 is a flow chart of a wireless charging method according to an exemplary embodiment. Figure 8 As shown, the wireless charging method is used in a second electronic device, and includes the following steps.

[0125] In step S810, a second foreign object detection parameter corresponding to the second electronic device is obtained.

[0126] In the embodiment of the present disclosure, the second electronic device may be a wireless charging device, which may also be a transmitting end, and the first electronic device may be a device to be charged, which may also be a receiving end. The second foreign object detection parameter may include at least one of the quality factor, the resonant frequency value, the surface temperature and the power loss difference (Ploss power difference change) of the resonant cavity.

[0127] In step S820, if it is determined based on the second foreign object detection parameter that there is a foreign object between the second electronic device and the first electronic device, it is determined whether the foreign object meets a specified condition.

[0128] As an optional manner, the second electronic device can determine whether there is a foreign object between it and the first electronic device based on the quality factor of the resonant cavity in the second foreign object detection parameter. Specifically, the second electronic device can determine whether the quality factor of the resonant cavity is less than a second preset quality factor, and if it is determined that the quality factor of the resonant cavity is less than the second preset quality factor, it is determined that there is a foreign object between the first electronic device and the second electronic device.

[0129] As another optional method, the second electronic device can determine whether there is a foreign object between it and the first electronic device based on the quality factor and the resonant frequency value of the resonant cavity in the second foreign object detection parameter. Specifically, the second electronic device can determine whether the quality factor of the resonant cavity is less than the second preset quality factor, and determine whether the resonant frequency value is greater than the second preset frequency value. If it is determined that the quality factor of the resonant cavity is less than the second preset quality factor, and the resonant frequency value is greater than the second preset frequency value, it is determined that there is a foreign object between the first electronic device and the second electronic device.

[0130] Optionally, when the second electronic device cannot determine whether there is a foreign object between the first electronic device and the second electronic device through the quality factor of the resonant cavity, the disclosed embodiment can be determined based on the resonant frequency value. Specifically, it is determined whether the resonant frequency value is greater than the second preset frequency value, and if it is determined that the resonant frequency value is greater than the second preset frequency value, it is determined that there is a foreign object between the first electronic device and the second electronic device.

[0131] As another optional method, the second electronic device can determine whether there is a foreign object between it and the first electronic device based on the surface temperature of the first electronic device in the first foreign object detection parameter. Specifically, the second electronic device can receive the surface temperature of the first electronic device from the first electronic device, and on this basis, determine whether the surface temperature of the first electronic device exceeds the first preset temperature. If it is determined that the surface temperature of the first electronic device exceeds the first preset temperature, it is determined that there is a foreign object between the first electronic device and the second electronic device.

[0132] Optionally, before receiving the surface temperature of the first electronic device from the first electronic device, the second electronic device may also determine whether it is in close contact with the foreign object. If it is determined that the second electronic device is in close contact with the foreign object, the second electronic device may obtain the surface temperature of the second electronic device. On this basis, it is determined whether the surface temperature of the second electronic device exceeds the second preset temperature. If it is determined that the surface temperature of the second electronic device exceeds the second preset temperature, it is determined that there is a foreign object between the first electronic device and the second electronic device.

[0133] Optionally, if it is determined that the second electronic device and the foreign object are not in close contact, the second electronic device may receive the surface temperature of the first electronic device and use the surface temperature to determine whether there is a foreign object between the first electronic device and the second electronic device.

[0134] As another optional manner, the second electronic device may determine whether there is a foreign object between it and the first electronic device based on the power loss difference in the first foreign object detection parameter. Specifically, the second electronic device may determine whether the power loss difference exceeds a preset difference, and if it is determined that the power loss difference exceeds the preset difference, it is determined that there is a foreign object between the first electronic device and the second electronic device.

[0135] In step S830, it is determined that the foreign object meets a specified condition, and the transmission power of the second electronic device is reduced.

[0136] In the embodiment of the present disclosure, the foreign object satisfies the specified conditions including at least one of the following: the offset between the first electronic device and the second electronic device is greater than the first preset distance, and the first electronic device is regarded as a foreign object; the offset between the first type of foreign object and the second electronic device is greater than the second preset distance; the offset between the second type of foreign object and the second electronic device is less than the third preset distance, and the size of the second type of foreign object is smaller than the size of the first type of foreign object.

[0137] As an optional manner, if the second electronic device determines that the foreign object meets the specified condition, the transmission power of the second electronic device is reduced. Specifically, the second electronic device can reduce the transmission power of the second electronic device according to the second foreign object detection parameter. Specifically, the second electronic device can reduce the transmission power according to the quality factor of the resonant cavity, that is, obtain the power adjustment level corresponding to the quality factor of the resonant cavity, and then reduce the transmission power of the second electronic device according to the power adjustment level.

[0138] Optionally, the second electronic device can reduce the transmission power according to the surface temperature of the first electronic device / the second electronic device, that is, obtain the power adjustment level corresponding to the surface temperature of the first electronic device / the second electronic device, and then reduce the transmission power of the second electronic device according to the power adjustment level.

[0139] Optionally, the second electronic device may reduce the transmission power according to the resonance frequency value, that is, obtain a power adjustment level corresponding to the resonance frequency value, and then reduce the transmission power of the second electronic device according to the power adjustment level.

[0140] Optionally, the second electronic device may reduce the transmit power according to the power loss difference, that is, obtain a power adjustment level corresponding to the power loss difference, and then reduce the transmit power of the second electronic device according to the power adjustment level.

[0141] The embodiment of the present disclosure can reduce the transmission power of the second electronic device in combination with the at least one second foreign body detection parameter, such as reducing the transmission power in combination with the quality factor of the resonant cavity and the surface temperature of the device. The specific combination is not explicitly limited here and can be selected according to actual conditions.

[0142] As another optional method, when it is determined that the foreign object meets the specified conditions, the second electronic device can also send a power adjustment signal to the first electronic device to instruct the first electronic device to reduce the receiving power. Specifically, the second electronic device can inform the first electronic device (receiving end) to reduce the power by communication, thereby achieving the purpose of reducing power, further reducing the intensity of magnetic field emission, and thus preventing the small foreign object from heating up.

[0143] In summary, in the embodiments of the present disclosure, when the receiving end or the transmitting end cannot distinguish whether there is a small metal foreign object or a deviation of the receiving end, wireless charging can be maintained at low power, while satisfying the freedom of wireless charging and the temperature of the small foreign object not exceeding the standard. In addition, according to different situations, the embodiments of the present disclosure can also perform multi-level protection for the traditional foreign object detection and charging interruption method, that is, when a large metal is detected, the charging protection is interrupted, and when a small metal (or the receiving end is offset) is detected, the wireless charging power is reduced. In this way, it can ensure that the temperature rise of small foreign objects does not exceed the temperature, and the freedom of wireless charging can be guaranteed.

[0144] When the present invention determines that there is a foreign object between the first electronic device and the second electronic device through the second foreign object detection parameter, if it is determined that the foreign object meets the specified conditions, the transmission of the second electronic device can be reduced. This not only ensures the freedom of wireless charging, but also reduces the risk of overheating and avoids burns to users.

[0145] Fig. 9 is a block diagram of a wireless charging device 900 according to an exemplary embodiment. Fig. 9 The device includes a first acquisition module 910, a first determination module 920 and a first reduction module 930.

[0146] The first acquisition module 910 is configured to acquire a first foreign object detection parameter corresponding to a first electronic device, where the first electronic device is a powered device;

[0147] The first determination module 920 is configured to determine whether the foreign object satisfies a specified condition if it is determined based on the first foreign object detection parameter that there is a foreign object between the first electronic device and the second electronic device, and the second electronic device is a power supply device;

[0148] The first reducing module 930 is configured to determine that the foreign object meets a specified condition and reduce the receiving power of the first electronic device.

[0149] In some implementations, the first reducing module 930 may also be configured to reduce the receiving power of the first electronic device based on the first foreign object detection parameter.

[0150] In some embodiments, the first foreign object detection parameter includes a quality factor of the resonant cavity, and the first reduction module 930 may include:

[0151] A first level acquisition submodule, configured to acquire a first power adjustment level corresponding to the quality factor of the resonant cavity;

[0152] The first reducing submodule is configured to reduce the receiving power of the first electronic device according to the first power adjustment level.

[0153] In some implementations, the first foreign object detection parameter further includes the surface temperature of the first electronic device, and the first reducing module 930 may further include:

[0154] A second level acquisition submodule is configured to acquire a second power adjustment level corresponding to the surface temperature of the first electronic device;

[0155] The second reducing submodule is configured to reduce the receiving power of the first electronic device according to the second power adjustment level.

[0156] In some embodiments, the first foreign object detection parameter also includes a resonant frequency value.

[0157] In some embodiments, the wireless charging device 900 may further include:

[0158] a receiving module, configured to receive a power adjustment signal sent by the second electronic device;

[0159] The first reducing module is configured to reduce the receiving power of the first electronic device according to the power adjustment signal.

[0160] In some embodiments, the foreign matter satisfies a specified condition including at least one of the following:

[0161] The offset between the first electronic device and the second electronic device is greater than a first preset distance, and the first electronic device is regarded as the foreign object;

[0162] The offset between the first type of foreign object and the second electronic device is greater than a second preset distance;

[0163] The offset between the second type of foreign object and the second electronic device is smaller than a third preset distance, and the size of the second type of foreign object is smaller than the size of the first type of foreign object.

[0164] When the present invention determines that there is a foreign object between the first electronic device and the second electronic device through the first foreign object detection parameter, if it is determined that the foreign object meets the specified conditions, the receiving power of the first electronic device can be reduced. This not only ensures the freedom of wireless charging, but also reduces the risk of overheating and avoids burns to users.

[0165] Fig.10 FIG. 1 is a block diagram of a wireless charging device 1000 according to an exemplary embodiment. Fig.10 The device includes a second acquisition module 1010, a second determination module 1020 and a second reduction module 1030.

[0166] The second acquisition module 1010 is configured to acquire a second foreign object detection parameter corresponding to a second electronic device, where the second electronic device is a power supply device;

[0167] The second determination module 1020 is configured to determine whether the foreign object satisfies a specified condition if it is determined based on the second foreign object detection parameter that there is a foreign object between the second electronic device and the first electronic device, and the first electronic device is a powered device;

[0168] The second reducing module 1030 is configured to determine that the foreign object meets a specified condition and reduce the transmission power of the second electronic device.

[0169] In some embodiments, the wireless charging device 1000 may further include:

[0170] The sending module sends a power adjustment signal to the first electronic device to instruct the first electronic device to reduce the receiving power.

[0171] In some embodiments, the second foreign object detection parameter includes at least one of a quality factor, a resonant frequency value, a surface temperature, and a power loss difference of the resonant cavity.

[0172] In some embodiments, the foreign matter satisfies a specified condition including at least one of the following:

[0173] The offset between the first electronic device and the second electronic device is greater than a first preset distance, and the first electronic device is regarded as the foreign object;

[0174] The offset between the first type of foreign object and the second electronic device is greater than a second preset distance;

[0175] The offset between the second type of foreign object and the second electronic device is smaller than a third preset distance, and the size of the second type of foreign object is smaller than the size of the first type of foreign object.

[0176] When the present invention determines that there is a foreign object between the first electronic device and the second electronic device through the second foreign object detection parameter, if it is determined that the foreign object meets the specified conditions, the transmission of the second electronic device can be reduced. This not only ensures the freedom of wireless charging, but also reduces the risk of overheating and avoids burns to users.

[0177] Regarding the device in the above embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be elaborated here.

[0178] The present disclosure also provides a computer-readable storage medium having computer program instructions stored thereon, and the program instructions, when executed by a processor, implement the steps of the wireless charging method provided by the present disclosure.

[0179] Fig.11 1 is a block diagram of an electronic device 1100 for wireless charging according to an exemplary embodiment. The electronic device 1100 may be a first electronic device in the embodiment of the present disclosure. For example, the electronic device 1100 may be a mobile phone, a tablet computer, a wearable device, etc. In addition, the electronic device 1100 may also be a second electronic device in the embodiment of the present disclosure. For example, the electronic device 1100 may be a charger, a charging tray, a wireless charger, a power adapter, etc.

[0180] Reference Fig.11 , the electronic device 1100 may include one or more of the following components: a processing component 1102 , a memory 1104 , a power component 1106 , a multimedia component 1108 , an audio component 1110 , an input / output interface 1112 , a sensor component 1114 , and a communication component 1116 .

[0181] The processing component 1102 generally controls the overall operation of the electronic device 1100, such as operations associated with display, phone calls, data communications, camera operations, and recording operations. The processing component 1102 may include one or more processors 1120 to execute instructions to complete all or part of the steps of the wireless charging method described above. In addition, the processing component 1102 may include one or more modules to facilitate the interaction between the processing component 1102 and other components. For example, the processing component 1102 may include a multimedia module to facilitate the interaction between the multimedia component 1108 and the processing component 1102.

[0182] The memory 1104 is configured to store various types of data to support operations on the electronic device 1100. Examples of such data include instructions for any application or method operating on the electronic device 1100, contact data, phone book data, messages, pictures, videos, etc. The memory 1104 may 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.

[0183] The power supply component 1106 provides power to various components of the electronic device 1100. The power supply component 1106 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 1100.

[0184] The multimedia component 1108 includes a screen that provides an output interface between the electronic device 1100 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 1108 includes a front camera and / or a rear camera. When the electronic device 1100 is in an operating mode, such as a shooting mode or a video mode, the front camera and / or the rear camera may receive external multimedia data. Each front camera and the rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.

[0185] The audio component 1110 is configured to output and / or input audio signals. For example, the audio component 1110 includes a microphone (MIC), and when the electronic device 1100 is in an operation 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 1104 or sent via the communication component 1116. In some embodiments, the audio component 1110 also includes a speaker for outputting audio signals.

[0186] The input / output interface 1112 provides an interface between the processing component 1102 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.

[0187] The sensor assembly 1114 includes one or more sensors for providing various aspects of status assessment for the electronic device 1100. For example, the sensor assembly 1114 can detect the open / closed state of the electronic device 1100, the relative positioning of components, such as the display and keypad of the electronic device 1100, and the sensor assembly 1114 can also detect the position change of the electronic device 1100 or a component of the electronic device 1100, the presence or absence of user contact with the electronic device 1100, the orientation or acceleration / deceleration of the electronic device 1100, and the temperature change of the electronic device 1100. The sensor assembly 1114 may include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor assembly 1114 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 1114 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0188] The communication component 1116 is configured to facilitate wired or wireless communication between the electronic device 1100 and other devices. The electronic device 1100 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 1116 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 1116 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.

[0189] In an exemplary embodiment, the electronic device 1100 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to perform the above-mentioned wireless charging method.

[0190] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 1104 including instructions, and the instructions can be executed by a processor 1120 of an electronic device 1100 to perform the wireless charging method described above. 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, and the like.

[0191] In another exemplary embodiment, a computer program product is further provided. The computer program product includes a computer program executable by a programmable device. The computer program has a code portion for executing the above wireless charging method when executed by the programmable device.

[0192] 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.

[0193] 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: Acquire a first foreign object detection parameter corresponding to a first electronic device, where the first electronic device is a powered device; If it is determined based on the first foreign object detection parameter that there is a foreign object between the first electronic device and the second electronic device, then determining whether the foreign object meets a specified condition, and the second electronic device is a power supply device; It is determined that the foreign object meets a specified condition, and the receiving power of the first electronic device is reduced.

2. The method according to claim 1, characterized in that: The reducing the receiving power of the first electronic device includes: The receiving power of the first electronic device is reduced based on the first foreign object detection parameter.

3. The method according to claim 2, characterized in that The first foreign object detection parameter includes a quality factor of the resonant cavity, and reducing the receiving power of the first electronic device based on the first foreign object detection parameter includes: Obtaining a first power adjustment level corresponding to the quality factor of the resonant cavity; The receiving power of the first electronic device is reduced according to the first power adjustment level.

4. The method according to claim 2, characterized in that: The first foreign object detection parameter further includes a surface temperature of the first electronic device, and reducing the receiving power of the first electronic device based on the first foreign object detection parameter includes: Acquire a second power adjustment level corresponding to the surface temperature of the first electronic device; The receiving power of the first electronic device is reduced according to the second power adjustment level.

5. The method according to any one of claims 1 to 4, characterized in that: The first foreign object detection parameter also includes a resonant frequency value.

6. The method according to any one of claims 1 to 4, characterized in that: The method further comprises: receiving a power adjustment signal sent by the second electronic device; The receiving power of the first electronic device is reduced according to the power adjustment signal.

7. The method according to any one of claims 1 to 4, characterized in that: The foreign matter meets the specified conditions including at least one of the following: The offset between the first electronic device and the second electronic device is greater than a first preset distance, and the first electronic device is regarded as the foreign object; The offset between the first type of foreign object and the second electronic device is greater than a second preset distance; The offset between the second type of foreign object and the second electronic device is smaller than a third preset distance, and the size of the second type of foreign object is smaller than the size of the first type of foreign object.

8. The method according to any one of claims 1 to 4, characterized in that: The determining that the foreign object meets a specified condition and reducing the receiving power of the first electronic device includes: Determine that the foreign object meets a specified condition, and obtain a power processing strategy corresponding to the specified condition; The received power of the first electronic device is reduced based on the power handling strategy.

9. A wireless charging method, characterized in that: include: Acquire a second foreign object detection parameter corresponding to a second electronic device, where the second electronic device is a power supply device; If it is determined based on the second foreign object detection parameter that there is a foreign object between the second electronic device and the first electronic device, determining whether the foreign object meets a specified condition and the first electronic device is a powered device; It is determined that the foreign object meets a specified condition, and the transmission power of the second electronic device is reduced.

10. The method according to claim 9, characterized in that The method further comprises: A power adjustment signal is sent to the first electronic device to instruct the first electronic device to reduce receiving power.

11. The method according to claim 9, characterized in that The second foreign object detection parameter includes at least one of a quality factor, a resonance frequency value, a surface temperature, and a power loss difference of the resonance cavity.

12. The method according to claim 9, characterized in that The foreign matter meets the specified conditions including at least one of the following: The offset between the first electronic device and the second electronic device is greater than a first preset distance, and the first electronic device is regarded as the foreign object; The offset between the first type of foreign object and the second electronic device is greater than a second preset distance; The offset between the second type of foreign object and the second electronic device is smaller than a third preset distance, and the size of the second type of foreign object is smaller than the size of the first type of foreign object.

13. The method according to claim 9, characterized in that The determining that the foreign object meets a specified condition and reducing the transmission power of the second electronic device includes: Determine that the foreign object meets a specified condition, and obtain a power processing strategy corresponding to the specified condition; The transmit power of the second electronic device is reduced based on the power handling strategy.

14. A wireless charging device, characterized in that: include: A first acquisition module is configured to acquire a first foreign object detection parameter corresponding to a first electronic device, where the first electronic device is a powered device; A first determination module is configured to determine whether the foreign object satisfies a specified condition if it is determined based on the first foreign object detection parameter that there is a foreign object between the first electronic device and the second electronic device, and the second electronic device is a power supply device; The first reducing module is configured to determine that the foreign object meets a specified condition and reduce the receiving power of the first electronic device.

15. A wireless charging device, characterized in that: include: A second acquisition module is configured to acquire a second foreign object detection parameter corresponding to a second electronic device, where the second electronic device is a power supply device; A second determination module is configured to determine whether the foreign object satisfies a specified condition if it is determined based on the second foreign object detection parameter that there is a foreign object between the second electronic device and the first electronic device; The second reducing module is configured to determine that the foreign object meets a specified condition and reduce the transmission power of the second electronic device, wherein the first electronic device is a powered device.

16. An electronic device, characterized in that: include: processor; a memory for storing processor-executable instructions; The processor is configured to execute the executable instructions to implement the method as claimed in any one of claims 1 to 13.

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

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