Wireless charging method and device, charging equipment and storage medium

Abstract

The present disclosure relates to a wireless charging method and apparatus, a charging device and a storage medium. The wireless charging method comprises: when wireless charging is performed according to a first protection mechanism, obtaining the transmission power of the wireless charging transmitting end; determining the receiving power of the wireless charging receiving end; determining the actual loss according to the transmission power and the receiving power; and determining the charging power of the wireless charging according to the power interval corresponding to the actual loss.

Description

Technical Field

[0001] The present disclosure relates to the field of display touch technology but is not limited to the field of wireless communication technology, and in particular to a wireless charging method and apparatus, a charging device and a storage medium. Background Art

[0002] With the efforts of wireless charging technology manufacturers and coil manufacturers, more and more smart devices, including many wearable devices and mobile smart terminals, are beginning to use wireless charging technology. In terms of the market, the Wireless Power Consortium (WPC) has been widely used.

[0003] During the wireless charging process, wireless charging protection is required. For example, wireless charging protection can be used to reduce damage to charging equipment caused by overcurrent, or when the loss of wireless charging is too large, charging can be stopped in time to reduce invalid charging or low charging efficiency.

[0004] However, in the related technologies, various wireless charging protection mechanisms have resulted in the phenomenon that the protection mechanism and charging efficiency are still low. Summary of the invention

[0005] The present disclosure provides a wireless charging method and apparatus, a charging device and a storage medium.

[0006] A first aspect of an embodiment of the present application provides a wireless charging method, which is applied to a wireless charging receiving end. The method includes:

[0007] When wireless charging is performed according to the first protection mechanism, obtaining the transmission power of the wireless charging transmitting end;

[0008] Determining the receiving power of the wireless charging receiving end;

[0009] Determining actual loss according to the transmit power and the receive power;

[0010] The charging power of the wireless charging is determined according to the power range corresponding to the actual loss.

[0011] Based on the above solution, determining the charging power of wireless charging according to the power range corresponding to the actual loss includes:

[0012] Determining, according to the actual loss and the target loss in the power interval in which the current charging power is located, whether the actual loss corresponds to the power interval in which the current charging power is located;

[0013] If the actual loss does not correspond to the power interval where the current charging power is located, adjust the current charging power.

[0014] Based on the above solution, if the actual loss does not correspond to the power interval where the current charging power is located, adjusting the current charging power includes:

[0015] If the actual loss does not correspond to the power interval where the current charging power is located, and the actual loss is greater than the target loss in the power interval where the current charging power is located, reduce the current charging power.

[0016] Based on the above solution, the method further includes:

[0017] If the power interval corresponding to the actual loss is not the power interval corresponding to the charging power before the redetermination, before the current charging power is redetermined, outputting prompt information of the wireless charging receiving end and / or the wireless charging transmitting end;

[0018] If the actual loss does not correspond to the power interval where the current charging power is located, adjusting the current charging power includes:

[0019] After the prompt information is output for a predetermined time, if the power interval corresponding to the actual loss is still not the power interval corresponding to the charging power before re-determination, the current charging power is adjusted.

[0020] Based on the above solution, the method further includes:

[0021] Before performing the wireless charging, interacting with the wireless charging transmitter to verify whether the wireless charging transmitter supports the first type of charging protocol charging;

[0022] When the verification information passes the verification, determining to perform wireless charging according to the first type of charging protocol;

[0023] When wireless charging is performed using the first type of charging protocol, wireless charging protection is performed according to the first protection mechanism.

[0024] Based on the above solution, the method further includes:

[0025] When the verification information fails to pass the verification, performing wireless charging between the wireless charging transmitting end and the wireless charging receiving end according to the second type of charging protocol;

[0026] When wireless charging is performed using the second type of charging protocol, wireless charging protection is performed according to a second protection mechanism different from the first protection mechanism.

[0027] Based on the above solution, the first type of charging protocol includes: a private charging protocol or an extended power specification EPP protocol.

[0028] A second aspect of an embodiment of the present application provides a wireless charging method, which is applied to a wireless charging transmitting end, and the method includes:

[0029] Sending charging information of the wireless charging transmitting end to the wireless charging receiving end; the charging information includes: transmission power or a charging signal value for calculating the transmission power, which is used for the wireless charging receiving end to determine the actual loss in combination with the receiving power;

[0030] and re-determining the charging power with the wireless charging receiving end based on the power interval corresponding to the actual power loss.

[0031] Based on the above solution, the charging signal value includes: the input current value and input voltage value of the inverter in the wireless charging transmitting end;

[0032] The method further comprises:

[0033] The input current value and the input voltage value are obtained.

[0034] A third aspect of an embodiment of the present application provides a wireless charging device, which is applied to a wireless charging receiving end. The method includes:

[0035] A first acquisition module, used to acquire the transmission power of the wireless charging transmitting end when wireless charging is performed according to the first protection mechanism;

[0036] A first determining module, used to determine the receiving power of the wireless charging receiving end;

[0037] A second determination module, configured to determine an actual loss according to the transmit power and the receive power;

[0038] The third determination module is used to determine the charging power of the wireless charging according to the power range corresponding to the actual loss.

[0039] Based on the above scheme, the third determination module is used to determine whether the actual loss corresponds to the power interval where the current charging power is located according to the actual loss and the target loss in the power interval where the current charging power is located; if the actual loss does not correspond to the power interval where the current charging power is located, adjust the current charging power.

[0040] Based on the above scheme, the third determination module is used to reduce the current charging power if the actual loss does not correspond to the power interval where the current charging power is located, and the actual loss is greater than the target loss in the power interval where the current charging power is located.

[0041] Based on the above solution, the device also includes:

[0042] a prompt module, configured to output prompt information of the wireless charging receiving end and / or the wireless charging transmitting end before redetermining the current charging power if the power interval corresponding to the actual loss is not the power interval corresponding to the charging power before redetermining;

[0043] The third determination module is specifically configured to adjust the current charging power if the power interval corresponding to the actual loss is still not the power interval corresponding to the charging power before re-determination after the prompt information is output for a predetermined period of time.

[0044] Based on the above solution, the method device also includes:

[0045] A verification module, used for interacting with the wireless charging transmitter to verify whether the wireless charging transmitter supports the first type of charging protocol charging before performing the wireless charging;

[0046] A fourth determination module, configured to determine to perform wireless charging according to the first type of charging protocol when the verification information passes the verification;

[0047] The first protection module is used to perform wireless charging protection according to the first protection mechanism when the first type of charging protocol is used for wireless charging.

[0048] Based on the above solution, the device also includes:

[0049] a charging module, configured to perform wireless charging between the wireless charging transmitting end and the wireless charging receiving end according to a second type of charging protocol when the verification information fails to pass the verification;

[0050] The second protection module is used to perform wireless charging protection according to a second protection mechanism different from the first protection mechanism when the second type of charging protocol is used for wireless charging.

[0051] Based on the above solution, the first type of charging protocol includes: a private charging protocol or an extended power specification EPP protocol.

[0052] A third aspect of an embodiment of the present application provides a wireless charging device, which is applied to a wireless charging transmitting end. The method includes:

[0053] A sending module, used to send charging information of the wireless charging sending end to the wireless charging receiving end; the charging information includes: transmission power or a charging signal value for calculating the transmission power, which is used for the wireless charging receiving end to determine the actual loss in combination with the receiving power;

[0054] The fifth determination module is used to redetermine the charging power together with the wireless charging receiving end based on the power interval corresponding to the actual loss.

[0055] Based on the above solution, the charging signal value includes: the input current value and input voltage value of the inverter in the wireless charging transmitting end;

[0056] The device also includes:

[0057] The second acquisition module is used to acquire the input current value and the input voltage value.

[0058] A fifth aspect of an embodiment of the present application provides a charging device, including:

[0059] processor;

[0060] a memory for storing processor-executable instructions;

[0061] The processor is configured to implement the wireless charging method provided in any embodiment of the first aspect or the second aspect by executing the executable instructions.

[0062] A sixth aspect of the embodiments of the present application provides a computer storage medium, which stores executable instructions; after the executable instructions are executed by a processor, the wireless charging method provided by any embodiment of the first aspect or the second aspect can be implemented.

[0063] The wireless charging method provided in the embodiment of the present application, when the first protection mechanism is used to protect wireless charging, will determine the transmission power of the wireless charging transmitter and the receiving power of the wireless charging receiver, and then obtain the actual loss of wireless charging, and determine whether the charging efficiency needs to be re-determined according to the power range corresponding to the actual loss. By using this protection mechanism for wireless charging protection, when the actual loss is too large, the charging power can be re-determined in time, thereby realizing overcurrent protection and heating protection; when the actual loss is small, the charging power can also be re-determined in time to improve the charging efficiency.

[0064] 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

[0065] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0066] Figure 1 The figure is a flow chart of a wireless charging method according to an exemplary embodiment.

[0067] Figure 2 The figure is a flow chart of a wireless charging method according to an exemplary embodiment.

[0068] Figure 3The figure is a flow chart of a wireless charging method according to an exemplary embodiment.

[0069] Figure 4 The figure is a schematic diagram showing the structure of a wireless charging device according to an exemplary embodiment.

[0070] Figure 5 The figure is a schematic diagram showing the structure of a wireless charging device according to an exemplary embodiment.

[0071] Figure 6 It is a schematic diagram of the structure of a terminal including a wireless charging receiving end according to an exemplary embodiment. DETAILED DESCRIPTION

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

[0073] like Figure 1 As shown, this embodiment provides a wireless charging method, which is applied to a wireless charging receiving end, and the method includes:

[0074] S11: when wireless charging is performed according to the first protection mechanism, obtaining the transmission power of the wireless charging transmitting end;

[0075] S12: Determine the receiving power of the wireless charging receiving end;

[0076] S13: determining actual loss according to the transmit power and the receive power, that is, determining actual power loss;

[0077] S14: Determine the charging power of the wireless charging according to the power range corresponding to the actual power loss.

[0078] The wireless charging method provided in the embodiment of the present application can be applied to a wireless charging receiving end including a wireless charging receiver. The wireless charging receiving end includes but is not limited to: a mobile terminal such as a mobile phone, a tablet computer or a wearable device, and can also be other fixed devices capable of receiving wireless charging.

[0079] In some embodiments, when wireless charging is performed according to the first protection mechanism, the transmission power of the wireless charging transmitter is directly received, or the charging current and charging voltage transmitted by the wireless charger are received. For example, the wireless charging receiver uses in-band communication to receive the transmission power, or receives the transmission power through out-band communication. The wireless charging receiver uses in-band communication to receive the charging voltage and charging current for calculating the transmission power, or receives the charging current or charging voltage for calculating the transmission power through out-band communication.

[0080] For example, when in-band communication is used, the charging signal and information signal of the wireless charging use the same carrier. When out-of-band communication is used, the charging signal of the wireless charger and the information signal of the transmission power use different carriers. The information signal here can be: a signal of the transmission power, or a signal of the charging current and charging voltage.

[0081] In the embodiment of the present application, the wireless charging receiving end determines its own receiving power. After receiving the wireless charging charging signal, the wireless charging receiving end converts the AC charging signal into a DC signal; the receiving power of the wireless charging receiving end can be determined based on the current value and voltage value of the DC signal.

[0082] Once the transmission power and the reception power are known, the reception power can be subtracted from the transmission power, and the difference is the actual loss.

[0083] Different losses correspond to different power ranges. A power range includes: an upper power limit and a lower power limit. The lower power limit is less than the upper power limit. A power range corresponds to a loss value or a loss range. A loss range includes: an upper loss limit and a lower loss limit.

[0084] If the actual power loss corresponds to the power interval, the charging power of the wireless charging is determined.

[0085] For example, if the power interval corresponding to the actual loss is not the power interval corresponding to the current charging power, the charging power of the wireless charging will be adjusted, thereby realizing the redetermination of the wireless charging. The redetermination of the wireless charging here may include: according to the actual loss, reducing the current charging power or increasing the current charging power, so as to ensure the charging efficiency and possibly reduce the risk of overcurrent. If in some embodiments, if the current charging power is redetermined, the redetermined charging power will be sent to the wireless charging transmitter; or, if the current charging power is redetermined, the indication information of the power interval corresponding to the redetermined charging power will be sent to the wireless charging transmitter. After the wireless charging transmitter receives the indication information of the power interval corresponding to the redetermined charging power or the current charging power determined by the charging, it will adjust its own transmission power. By adjusting the transmission power, the charging damage of the charging device caused by overcurrent is reduced; or, the charging efficiency is improved.

[0086] The charging device includes but is not limited to the wireless charging transmitter and the wireless charging receiver.

[0087] For another example, if the power interval corresponding to the actual loss is the power interval corresponding to the current charging power, the current charging power of the wireless charging will be maintained.

[0088] The multiple power intervals are divided by the same power step; or, the multiple power intervals are divided by different power intervals.

[0089] In some embodiments, the power step size may be determined according to the maximum charging power supported by the wireless charging protocol to divide the power intervals.

[0090] For example, the maximum charging power supported by the private charging protocol is 30W. If the power step is 5W, the multiple power intervals may be as follows: 5W-10W, 10W-15W, 15W-20W, 20W-25W and 25W-30W.

[0091] For another example, the maximum charging power supported by the EPP protocol is 15W. If the power step is 4W, the multiple power intervals may be as follows: 5W-9W, 9W-13W and 13W-15W. If the power step is 5W, the multiple power intervals may be as follows: 5W-10W and 10W-15W.

[0092] In some embodiments, Figure 2 As shown, the S14 may include:

[0093] S141: Determine, based on the actual loss and the target loss in the power interval in which the current charging power is located, whether the actual loss corresponds to the power interval in which the current charging power is located;

[0094] S142: If the actual loss does not correspond to the power interval where the current charging power is located, adjust the current charging power.

[0095] For example, the current charging power is between 25W and 30W, and a loss interval or a maximum loss value is set for the charging interval of 25W to 30W. The loss interval or the maximum loss value here are examples of the above-mentioned target loss.

[0096] For example, if the actual loss is greater than the maximum loss value in the target loss, it can be considered that the actual loss does not correspond to the target loss in the power interval where the current charging power is located; otherwise, it is considered that the actual loss corresponds to the power interval where the current charging power is located.

[0097] For another example, if the actual loss is outside the loss interval corresponding to the current charging power interval, it is determined that the actual loss does not correspond to the power interval where the current charging power is located; otherwise, it is considered that the actual loss corresponds to the power range where the current charging power is located.

[0098] In some embodiments, the S142 may include:

[0099] If the actual loss does not correspond to the power interval where the current charging power is located, and the actual loss is greater than the target loss in the power interval where the current charging power is located, the current charging power is reduced to ensure that in the power intervals where different charging powers are located, the power loss is below the target loss corresponding to the current power difference.

[0100] When the actual loss does not correspond to the power interval in which the current charging power is located, if the target loss is the maximum loss, and the actual loss is greater than the target loss in the power interval in which the current charging power is located, the current charging power is automatically reduced.

[0101] For example, each power interval is sorted from large to small according to its corresponding charging power, and when the current charging power consumption is reduced, it can automatically switch to the charging power corresponding to the next power interval.

[0102] For another example, the impedance of wireless charging is estimated based on the current actual loss, and the charging power suitable for the current impedance is calculated based on the impedance and the charging power corresponding to each power interval.

[0103] For another example, if the actual loss does not correspond to the power interval where the current charging power is located, and the actual loss is less than the minimum loss in the power interval where the current charging power is located, the current charging power is increased to improve the charging efficiency. When increasing the current charging power, it can be increased to the power corresponding to the previous power interval. Alternatively, the current charging impedance is calculated based on the actual loss, and the appropriate charging power is estimated based on the impedance.

[0104] In summary, in the embodiments of the present application, there are multiple ways to re-determine the charging power, which are not limited to any one. In some embodiments, the method further includes:

[0105] If the power interval corresponding to the actual loss is not the power interval corresponding to the charging power before the re-determination, before the current charging power is re-determined, output the prompt information of the wireless charging receiving end and / or the wireless charging transmitting end. The S142 may include: after the prompt information is output for a predetermined period of time, if the power interval corresponding to the actual loss is still not the power interval corresponding to the charging power before the re-determination, adjust the current charging power.

[0106] The actual loss may be too large because the posture of the charging device is not correct during the charging process. In order to ensure the charging rate, in an embodiment of the present application, a prompt message will be output before the current charging power is re-determined. For example, a prompt message in text and / or image format is displayed on the display screen of the wireless charging receiving end. After the user sees the prompt message, he will adjust at least one of the wireless charging transmitting end and the wireless charging receiving end to improve the charging efficiency.

[0107] For example, the charging efficiency may be improved by adjusting the distance between the wireless charging transmitter and the wireless charging receiver, or the relative orientation between the wireless charging transmitter and the wireless charging receiver.

[0108] Of course, in other embodiments, the prompt information may be a voice message or a light signal. In this way, after the user sees the prompt information, he or she will manually adjust the position and / or posture of at least one of the wireless charging transmitter and the wireless charging receiver to improve the charging efficiency while ensuring the charging rate.

[0109] For example, the wireless charging technology based on WPC requires the receiving coil and the transmitting coil to be aligned to obtain the best efficiency. When the receiving coil and the transmitting coil deviate, the wireless charging efficiency will decrease. Generally, the degree of freedom of wireless charging is that wireless charging can be performed within 15mm deviation in the X direction or Y direction, and the efficiency drops sharply with the deviation of the coil. For example, when the deviation is 10mm, the efficiency drops by about 10%. The receiving coil is located in the wireless charging receiving end. The transmitting coil is located in the wireless charging transmitting end. The transmitting coil is used to transmit the charging signal for wireless charging, and the receiving coil is used to receive the charging signal for wireless charging in wireless form.

[0110] In 30W wireless charging, if the efficiency is 86% when the coil center is aligned, the transmitting power of the transmitter is 35W; when offset by 10mm, in order to maintain 30W wireless charging at the receiving end, the transmitting power of the transmitter is 40W (for example, the efficiency drops to 76%), and there will be a loss of up to 10W, causing rapid heating during charging. In this way, through the output of prompt information, if the relative position between the wireless charging transmitter and the wireless charging receiver is adjusted in time, on the one hand, the rapid heating phenomenon caused by excessive actual loss can be reduced, and on the other hand, the charging efficiency can be improved.

[0111] The preset time length may be a preset time length such as 5 minutes or 3 minutes, etc. The preset time length is a time length during which the wireless charging transmitter and the wireless charging receiver will not be damaged even if the actual loss is too large.

[0112] In some embodiments, the method further comprises:

[0113] Before performing the wireless charging, interacting with the wireless charging transmitter to verify whether the wireless charging transmitter supports the first type of charging protocol charging;

[0114] When the verification information passes the verification, determining to perform wireless charging according to the first type of charging protocol;

[0115] When wireless charging is performed using the first type of charging protocol, wireless charging protection is performed according to the first protection mechanism.

[0116] Before wireless charging, the wireless charging receiver needs to exchange charging information with the wireless charging transmitter. The charging information includes: the wireless charging protocols supported by both parties. Different wireless charging protocols correspond to different charging parameters. The charging parameters include: charging current, charging voltage and / or charging power, etc.

[0117] In an embodiment of the present application, the charging information may also include: the aforementioned verification information. The verification information here includes but is not limited to verification information of whether a specific charging protocol is supported. For example, the verification information may be verification information of whether a first type of charging protocol is supported.

[0118] The first type of charging protocol may be various high-power charging protocols, for example, a private charging protocol supporting 30 W, or an EPP protocol supporting 15 W. The EPP protocol is a standard charging protocol, which is different from a private charging protocol.

[0119] Different charging protocols may correspond to different verification information.

[0120] After the verification information of the first type of charging protocol is passed, it can be considered that the wireless charging receiving end and the wireless charging transmitting end support the first type of charging protocol. If the first type of charging protocol is supported, in order to ensure a sufficiently high charging rate, the first type of charging protocol will be used for charging.

[0121] In the embodiment of the present application, the type information can be used as verification information according to the device types of the wireless charging transmitter and the wireless charging receiver to determine whether the wireless charging transmitter and the wireless charging receiver both support the first type of charging protocol.

[0122] For example, when the wireless charging transmitter device type is:

[0123] When using ordinary DCP chargers, Quick Charge (QC) 2.0 chargers, QC3.0 chargers, QC4.0 chargers and PD chargers, the wireless charging transmitter can be considered to support the first type of charging protocol. DCP is the abbreviation for Downstream Charge Port.

[0124] If the first type of charging protocol is used for wireless charging, the first protection mechanism in the embodiment of the present application is used to protect the wireless charging.

[0125] Of course, in other embodiments, a second type of charging protocol other than the first type of charging protocol may also adopt the first protection mechanism for charging protection.

[0126] In some embodiments, when the first protection mechanism is used for wireless charging protection, the transmission power of the wireless charging transmitter is periodically obtained, so as to periodically determine the current wireless charging power.

[0127] In other embodiments, when the first protection mechanism is used for wireless charging protection, the transmission power of the wireless charging transmitter can be obtained in real time, so that the current wireless charging power can be determined in real time, thereby achieving real-time protection of wireless charging.

[0128] In some embodiments, the method further comprises:

[0129] When the verification information fails to pass the verification, performing wireless charging between the wireless charging transmitting end and the wireless charging receiving end according to the second type of charging protocol;

[0130] When wireless charging is performed using the second type of charging protocol, wireless charging protection is performed according to a second protection mechanism different from the first protection mechanism.

[0131] The second type of charging protocol includes, but is not limited to, charging with a basic power profile (BPP). The charging parameters corresponding to the BPP protocol include: a charging power less than or equal to 5W.

[0132] For example, the first type of charging protocol includes: a private charging protocol or an Extended Power Profile (EPP) protocol.

[0133] The first type of charging protocol and the second type of charging protocol can be dynamically divided. For example, in some cases, the EPP protocol can also be identified as a second type of charging protocol.

[0134] The second protection mechanism may be any one of the following:

[0135] Maximum power protection mechanism or over current protection (OCP) mechanism. When the transmitting power of the transmitter exceeds the maximum power limit or the current (input current, coil current, etc.) of the transmitter is greater than a certain threshold, the transmitter stops wireless charging.

[0136] Protection mechanism based on coil temperature: The transmitter detects the temperature of the transmitting coil itself. When the temperature exceeds a certain threshold, wireless charging is stopped or the wireless charging power is reduced.

[0137] Protection mechanism based on charging efficiency: The transmitter calculates the efficiency based on the current transmission power and reception power. When the charging efficiency is lower than a certain threshold, wireless charging is stopped or the wireless charging power is reduced.

[0138] like Figure 3 As shown, this embodiment provides a wireless charging method, which is applied to a wireless charging transmitter, and the method includes:

[0139] S21: Sending charging information of the wireless charging transmitting end to the wireless charging receiving end; the charging information includes: transmission power or a charging signal value for calculating the transmission power, which is used for the wireless charging receiving end to determine the actual loss in combination with the receiving power;

[0140] S22: Re-determine the charging power with the wireless charging receiving end based on the power range corresponding to the actual power loss.

[0141] The wireless charging method provided in the embodiment of the present application is applied to a wireless charging transmitter, which includes but is not limited to a wireless charger.

[0142] The charging information includes: the transmission power or charging signal value of the wireless charging transmitter. The charging signal value can be used by the wireless power receiving end to calculate the transmission power. For example, the charging signal value includes: the charging voltage value and current value.

[0143] In the embodiment of the present application, the wireless charging receiving end calculates the actual loss based on the charging information of the wireless charging end. Figure 1 The method shown, when the actual loss of wireless charging does not correspond to the power range of the current charging power, will negotiate with the wireless charging transmitter to re-determine the current charging power. On the one hand, when the actual loss is too large, the current charging power is reduced to reduce overcurrent or coil overheating; on the other hand, when the actual loss is too large, the charging efficiency can be improved and unnecessary energy consumption can be reduced by reducing the current charging power.

[0144] For example, the charging information is sent to the wireless charging receiving end by using in-band communication, or the charging information is sent to the wireless charging receiving end by using out-band communication.

[0145] In some embodiments, the charging signal value includes: an input current value and an input voltage value of an inverter in the wireless charging transmitting end;

[0146] The method further comprises:

[0147] The input current value and the input voltage value are obtained.

[0148] The current input to the inverter is direct current, and the input current value and input voltage value input to the inverter can be detected by a sampling resistor or the like.

[0149] After the input current value and the input voltage value are obtained, the transmission power can be obtained by calculating the product of the two.

[0150] In some embodiments, the transmission power may be calculated by the wireless charging transmitting end, and in other embodiments, the transmission power may also be calculated by the wireless charging receiving end itself.

[0151] In some embodiments, the method further comprises:

[0152] Before performing the wireless charging, verification information is exchanged with the wireless charging receiving end, where the verification information is used to verify whether the wireless charging receiving end and the wireless charging transmitting end both support the first type of charging protocol.

[0153] If the first type of charging protocol is supported, the wireless charging transmitter will send the charging information to the wireless charging receiver periodically or in real time.

[0154] like Figure 4As shown, this embodiment provides a wireless charging device, which is applied to a wireless charging receiving end. The method includes:

[0155] A first acquisition module 41, used to acquire the transmission power of the wireless charging transmitting end when wireless charging is performed according to the first protection mechanism;

[0156] A first determining module 42, configured to determine the receiving power of the wireless charging receiving end;

[0157] A second determination module 43, configured to determine an actual loss according to the transmit power and the receive power;

[0158] The third determination module 43 is used to determine the charging power of the wireless charging according to the power range corresponding to the actual power loss.

[0159] In some embodiments, the first acquisition module 41, the first determination module 42, the second determination module 43 and the third determination module 44 may all be program modules; after the program modules are executed by the processor, the operations of the above modules can be performed.

[0160] In some embodiments, the first acquisition module 41, the first determination module 42, the second determination module 43 and the third determination module 44 may all be software-hard combination modules; the software-hard combination modules include but are not limited to various programmable arrays, including but not limited to complex programmable arrays or field programmable arrays.

[0161] In some other embodiments, the first acquisition module 41, the first determination module 42, the second determination module 43 and the third determination module 44 may all be pure hardware modules; the pure hardware modules include but are not limited to application specific integrated circuits.

[0162] In some embodiments, the third determination module 43 is used to determine whether the actual loss corresponds to the power interval where the current charging power is located based on the actual loss and the target loss in the power interval where the current charging power is located; if the actual loss does not correspond to the power interval where the current charging power is located, adjust the current charging power.

[0163] In some embodiments, the third determination module 43 is used to reduce the current charging power if the actual loss does not correspond to the power interval where the current charging power is located, and the actual loss is greater than the target loss in the power interval where the current charging power is located.

[0164] In some embodiments, the apparatus further comprises:

[0165] a prompt module, configured to output prompt information of the wireless charging receiving end and / or the wireless charging transmitting end before redetermining the current charging power if the power interval corresponding to the actual loss is not the power interval corresponding to the charging power before redetermining;

[0166] The third determination module 43 is specifically configured to adjust the current charging power if the power interval corresponding to the actual loss is still not the power interval corresponding to the charging power before re-determination after the prompt information is output for a predetermined period of time.

[0167] In some embodiments, the method apparatus further comprises:

[0168] A verification module, used for interacting with the wireless charging transmitter to verify whether the wireless charging transmitter supports the first type of charging protocol charging before performing the wireless charging;

[0169] A fourth determination module, configured to determine to perform wireless charging according to the first type of charging protocol when the verification information passes the verification;

[0170] The first protection module is used to perform wireless charging protection according to the first protection mechanism when the first type of charging protocol is used for wireless charging.

[0171] In some embodiments, the apparatus further comprises:

[0172] a charging module, configured to perform wireless charging between the wireless charging transmitting end and the wireless charging receiving end according to a second type of charging protocol when the verification information fails to pass the verification;

[0173] The second protection module is used to perform wireless charging protection according to a second protection mechanism different from the first protection mechanism when the second type of charging protocol is used for wireless charging.

[0174] In some embodiments, the first type of charging protocol includes: a private charging protocol or an extended power specification (EPP) protocol.

[0175] like Figure 5 As shown, this embodiment provides a wireless charging device, which is applied to a wireless charging transmitter. The method includes:

[0176] A sending module 51 is used to send charging information of the wireless charging transmitting end to the wireless charging receiving end; the charging information includes: transmission power or a charging signal value for calculating the transmission power, which is used for the wireless charging receiving end to determine the actual loss in combination with the receiving power;

[0177] The fifth determination module 52 is configured to, together with the wireless charging receiving end, redetermine the charging power based on the power interval corresponding to the actual power loss.

[0178] In some embodiments, the sending module 51 and the fifth determining module 52 may both be program modules; after the program modules are executed by the processor, the operations of the above modules can be performed.

[0179] In some embodiments, the first acquisition module, the first determination module, the second determination module and the third determination module may all be software-hard combination modules; the software-hard combination modules include but are not limited to various programmable arrays, including but not limited to complex programmable arrays or field programmable arrays.

[0180] In some other embodiments, the first acquisition module, the first determination module, the second determination module and the third determination module may all be pure hardware modules; the pure hardware modules include but are not limited to application-specific integrated circuits.

[0181] In some embodiments, the charging signal value includes: an input current value and an input voltage value of an inverter in the wireless charger. The device also includes: an acquisition module for acquiring the input current and input voltage of the inverter in the wireless charging transmitter.

[0182] Two examples are provided below in combination with any of the above embodiments:

[0183] Example 1:

[0184] This example proposes a protection mechanism and method for a wireless charging receiver. The receiver actively reduces the load power according to the efficiency loss, that is, the transmitter sends its own transmission power to the receiver through in-band frequency shift keying (FSK) information or out-of-band communication technology at regular intervals. The receiver calculates the power loss based on the received power at the previous moment. When the power loss is higher than a certain threshold, the load power of the receiver is actively reduced to ensure that wireless charging is safer and avoid heating during charging. FSK information is FSK information obtained by modulating the transmission power or charging information using FSK.

[0185] Example 2:

[0186] This example proposes a protection mechanism and method for a wireless charging receiving end, which is applicable to a high-power wireless charging transmitting end and a receiving end of a private protocol.

[0187] The specific method is as follows:

[0188] The wireless transmitter is connected to the charger, and the transmitter completes the charger type detection. The charger types are ordinary DCP chargers, QC2.0 chargers, QC3.0 chargers, QC4.0 chargers, and power transmission (PD) chargers. The wireless receiver is placed on the wireless transmitter. The receiver and the wireless transmitter first interact using the Qi-specified in-band communication protocol. The wireless transmitter supports the Qi-specified BPP (5W) protocol and EPP (<=15W) protocol.

[0189] The receiving end and the sending end perform fast wireless charging authentication, that is, the receiving end performs authorization verification on the sending end.

[0190] If the verification is passed, the transmitter and receiver use a private protocol for wireless charging, and the charging power can reach 30W.

[0191] Through in-band private protocols and commands (or out-of-band protocols and commands), the receiving end can obtain the voltage and current information of the sending device in real time and calculate the transmission power P of the sending end. Tx_in .

[0192] P Tx_in =V Tx *I Tx , where V Tx I is the input voltage value of the inverter in the wireless charging transmitter; Tx It is the input current value of the inverter in the wireless charging transmitter.

[0193] The receiving end calculates the current received power p Rx_out .

[0194] p Rx_out =V Rx *I Rx , where V Rx is the voltage value of the wireless charging receiving end; I Tx is the current value in the wireless charging receiving end.

[0195] According to the different power requirements of the receiving end, such as 5W-10W, 10W-15W, 15W-20W, 20W-25W, 25W-30W and other different power ranges, different target power loss P is set for each power range. loss_leve_i , such as P loss_leve_1 Represents the target loss in the 5-10W power range.

[0196] The actual formula for calculating power loss is: P loss =P Tx_in -P Rx_out , where P loss The actual loss.

[0197] Under the current receiving and transmitting coil positions, the receiving end calculates P in real time. loss Value, if P loss <P loss_leve_i , then maintain normal wireless charging;

[0198] If the current P loss >P loss_leve_i , the receiving end can give a UI prompt: the coil position is not aligned and needs to be manually aligned; if the receiving end does not align the coil position or is within a certain offset range within a period of time T1, the receiving end will actively reduce the power. That is, the current maximum charging power P allowed by the receiving end Rx_out =P Tx_in -P loss , the receiving end will reset the charging power.

[0199] During the entire wireless charging process, the receiving end will perform real-time power loss calculations and actively adjust the power output of the receiving end to ensure that the power loss is below the target loss in different charging power level ranges.

[0200] If the verification fails, the Qi-specified BPP or EPP protocol is used for charging. The transmitter supports both EPP and BPP protocols. If the receiver supports EPP, the EPP negotiated power charging (<=15W) is performed. If the receiver only supports BPP, the BPP power (<=5W) is used for charging. The above intelligent charging control method of the receiver ensures that wireless charging is safer and avoids heating during charging.

[0201] Example 3:

[0202] This example proposes a protection mechanism and method for the wireless charging transmitter. Different from the current transmitter protection method, it is a protection mechanism based on actual power loss. Different power intervals are set according to the power required by the receiver, such as 5W-10W, 10W-15W, 15W-20W, 20W-25W, 25W-30W, etc. Different power loss targets P are set for each power interval. loss_leve_i ; According to the current power range and power loss target, the transmitter notifies the receiver to actively reduce the power or the transmitter itself actively reduces the power to ensure that the power loss in the current power range is within the target range to avoid abnormal heating during charging. This method is applicable to high-power wireless charging transmitters and receivers of private protocols, as well as wireless charging transmitters and receivers of ordinary standard Qi BPP and EPP protocols, ensuring that the wireless transmitter is safer and avoiding heating during charging.

[0203] Example 4:

[0204] This example proposes a protection mechanism and method for a wireless charging transmitter, which is applicable to high-power wireless charging transmitters and receivers of private protocols, and also to wireless charging transmitters and receivers of common standard Qi BPP and EPP protocols.

[0205] The specific method is as follows:

[0206] The wireless transmitter is connected to the charger, and the transmitter completes the charger type detection. The charger types include ordinary DCP charger, QC2.0 charger, QC3.0 charger, QC4.0 charger and PD charger.

[0207] The wireless receiving end is placed on the wireless transmitting end. The receiving end and the wireless transmitting end first interact using the in-band communication protocol of the Qi specification. The wireless transmitting end supports the BPP (5W) protocol and the EPP (<=15W) protocol of the Qi specification.

[0208] The receiving end and the sending end perform fast wireless charging authentication, that is, the receiving end performs authorization verification on the sending end.

[0209] If the verification is passed, the transmitter and receiver use a private protocol for wireless charging, and the charging power can reach 30W. Through the in-band private protocol and commands, the transmitter can obtain the voltage and current information of the receiver in real time and calculate the transmission power p of the receiver. RX_out .

[0210] p Rx_out =V Rx *I Rx

[0211] The transmitter calculates the current transmit power P Tx_in .

[0212] p Tx_in =V Tx *I Tx

[0213] According to the different power requirements of the receiving end, such as 5W-10W, 10W-15W, 15W-20W, 20W-25W, 25W-30W and other different power ranges, different power loss target P is set for each power range. loss_leve_i , such as P loss_leve_1 Represents the target loss in the 5-10W power range.

[0214] The actual formula for calculating power loss is: P loss =P Tx_in -P Rx_out

[0215] Under the current receiving and transmitting coil positions, the transmitting end calculates P in real time. lossValue, if P loss <P loss_leve_i , then maintain normal wireless charging; if the current P loss >P loss_leve_i , the transmitter notifies the receiver through the in-band private protocol, for example, giving a UI prompt: the coil position is not aligned and needs to be manually aligned; if the coil position of the receiver is not aligned or within a certain offset range within a period of time T1, the transmitter notifies the receiver through the in-band private protocol to reduce the power. That is, notify the receiver of the current maximum charging power P allowed Rx_out =P Tx_in -P loss When the receiving end receives the power reduction information, it will reset the charging power. During the entire wireless charging process, the transmitting and receiving ends will perform real-time power loss calculations to adjust the power output of the receiving end to ensure that the power loss is below the target loss in different charging power level ranges.

[0216] If the verification fails, the Qi-specified BPP or EPP protocol is used for charging. The sending end itself supports the EPP and BPP protocols. If the receiving end supports the EPP protocol, EPP negotiated power charging (<=15W) is performed; if the receiving end only supports the BPP protocol, BPP (<=5W) power charging is performed.

[0217] If it is an EPP receiver, the transmitter sets the maximum allowable transmitter power P according to the two intervals of 5W-10W and 10W-15W respectively. Tx_max_10W and P Tx_max_15W .

[0218] If the current receiving end is within the power range, for example, the receiving end and the transmitting device negotiate a 10W power load; the transmitting end monitors the transmitting end transmission power P in real time Tx , when P Tx <P Tx_max_10W When P Tx >=P Tx_max_10W When the current transmitting power is maintained at P Tx_max_10W , the receiving end continues to send and control error packets (CEP). CEP is the power adjustment information sent by the receiving end to the transmitting end. A positive value represents a power increase, and a negative value represents a power decrease. The transmitting end will no longer respond to the receiving end's CEP request, that is, maintain the current transmitting end power.

[0219] If it is a BPP receiver, the transmitter sets the maximum allowed transmitter power P Tx_max_5W The transmitter monitors the transmitter transmission power P in real time. Tx , when P Tx <P Tx_max_5WWhen P Tx >=P Tx_max_5W When the current transmitting power is maintained at P Tx_max_5W When the receiving end continues to send and CEP, the sending end will no longer respond to the receiving end's CEP request, that is, maintain the current sending end power. Through the above sending end's intelligent charging control method, the wireless sending end is ensured to be safer and avoid heating during charging.

[0220] The present application provides a charging device, including:

[0221] Transceiver;

[0222] processor;

[0223] a memory for storing processor-executable instructions;

[0224] Among them, the processor is configured to implement the wireless charging method provided by any of the aforementioned technical solutions by executing the executable instructions, for example, it can implement the wireless charging method applied to the wireless charging receiving end or the wireless charging method applied to the wireless charging transmitting end.

[0225] The processor can achieve various executable instructions such as source code or object code by executing Figure 1 , Figure 2 and / or Figure 3 The wireless charging method shown.

[0226] The transceiver may be a transmitting coil or a receiving coil.

[0227] An embodiment of the present application provides a computer storage medium, which stores executable instructions; after the executable instructions are executed by a processor, the wireless charging method provided by any of the aforementioned technical solutions can be implemented.

[0228] Figure 6 8 is a block diagram of a terminal 800 including a wireless charging receiving end according to an exemplary embodiment. For example, the terminal 800 including the wireless charging receiving end may be a mobile phone, a computer, a digital broadcast charging device, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, etc.

[0229] Reference Figure 6 The terminal 800 including the wireless charging receiving end 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 (I / O) interface 812, a sensor component 814, and a communication component 816.

[0230] The processing component 802 generally controls the overall operation of the terminal 800 including the wireless charging receiving end, 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 above method. 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.

[0231] The memory 804 is configured to store various types of data to support operations in the device 800. Examples of such data include instructions for any application or method operating on the terminal 800 including the wireless charging receiving end, 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.

[0232] The power component 806 provides power to various components of the terminal 800 including the wireless charging receiving end. The power component 806 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the terminal 800 including the wireless charging receiving end.

[0233] The multimedia component 808 includes a screen that provides an output interface between the terminal 800 including the wireless charging receiving end 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 can 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 can 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 device 800 is in an operating mode, such as a shooting mode or a video mode, the front camera and / or the rear camera can receive external multimedia data. Each front camera and rear camera can be a fixed optical lens system or have focal length and optical zoom capabilities.

[0234] 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 terminal 800 including the wireless charging receiving terminal 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.

[0235] I / O interface 812 provides an interface between processing component 802 and peripheral interface modules, such as 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.

[0236] The sensor assembly 814 includes one or more sensors for providing various aspects of status assessment for the terminal 800 including the wireless charging receiving end. For example, the sensor assembly 814 can detect the open / closed state of the device 800, the relative positioning of the components, such as the display and keypad of the terminal 800 including the wireless charging receiving end, and the sensor assembly 814 can also detect the position change of the terminal 800 including the wireless charging receiving end or a component of the terminal 800 including the wireless charging receiving end, the presence or absence of contact between the user and the terminal 800 including the wireless charging receiving end, the orientation or acceleration / deceleration of the terminal 800 including the wireless charging receiving end, and the temperature change of the terminal 800 including the wireless charging receiving end. 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.

[0237] The communication component 816 is configured to facilitate wired or wireless communication between the terminal 800 including the wireless charging receiving end and other devices. The terminal 800 including the wireless charging receiving end 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.

[0238] In an exemplary embodiment, the terminal 800 including the wireless charging receiving end can be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors or other electronic components to perform the above method.

[0239] 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 a terminal 800 including a wireless charging receiving end to complete the above method. For example, the non-transitory computer-readable storage medium can be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, etc.

[0240] The embodiment of the present application provides a non-transitory computer-readable storage medium. When the instructions in the storage medium are executed by a processor in a terminal including a wireless charging receiving end, a mobile charging device can perform a wireless charging method, the method comprising:

[0241] When wireless charging is performed according to the first protection mechanism, obtaining the transmission power of the wireless charging transmitting end;

[0242] Determining the receiving power of the wireless charging receiving end;

[0243] Determining actual loss according to the transmit power and the receive power;

[0244] The charging power of the wireless charging is determined according to the power range corresponding to the actual loss.

[0245] Further, determining the charging power of the wireless charging according to the power interval corresponding to the actual loss includes:

[0246] Determining, according to the actual loss and the target loss in the power interval in which the current charging power is located, whether the actual loss corresponds to the power interval in which the current charging power is located;

[0247] If the actual loss does not correspond to the power interval where the current charging power is located, adjust the current charging power.

[0248] Furthermore, if the actual loss does not correspond to the power interval in which the current charging power is located, adjusting the current charging power includes:

[0249] If the actual loss does not correspond to the power interval where the current charging power is located, and the actual loss is greater than the target loss in the power interval where the current charging power is located, reduce the current charging power.

[0250] Furthermore, the method further comprises:

[0251] If the power interval corresponding to the actual loss is not the power interval corresponding to the charging power before the redetermination, before the current charging power is redetermined, outputting prompt information of the wireless charging receiving end and / or the wireless charging transmitting end;

[0252] If the actual loss does not correspond to the power interval where the current charging power is located, adjusting the current charging power includes:

[0253] After the prompt information is output for a predetermined time, if the power interval corresponding to the actual loss is still not the power interval corresponding to the charging power before re-determination, the current charging power is adjusted.

[0254] Furthermore, the method further comprises:

[0255] Before performing the wireless charging, interacting with the wireless charging transmitter to verify whether the wireless charging transmitter supports the first type of charging protocol charging;

[0256] When the verification information passes the verification, determining to perform wireless charging according to the first type of charging protocol;

[0257] When wireless charging is performed using the first type of charging protocol, wireless charging protection is performed according to the first protection mechanism.

[0258] Furthermore, the method further comprises:

[0259] When the verification information fails to pass the verification, performing wireless charging between the wireless charging transmitting end and the wireless charging receiving end according to the second type of charging protocol;

[0260] When wireless charging is performed using the second type of charging protocol, wireless charging protection is performed according to a second protection mechanism different from the first protection mechanism.

[0261] Furthermore, the first type of charging protocol includes: a private charging protocol or an extended power specification EPP protocol.

[0262] The embodiment of the present application provides a non-transitory computer-readable storage medium. When the instructions in the storage medium are executed by a processor in a charger including a wireless charging transmitter, a mobile charging device can perform a wireless charging method, the method comprising:

[0263] Sending charging information of the wireless charging transmitting end to the wireless charging receiving end; the charging information includes: transmission power or a charging signal value for calculating the transmission power, which is used for the wireless charging receiving end to determine the actual loss in combination with the receiving power;

[0264] and re-determining the charging power with the wireless charging receiving end based on the power interval corresponding to the actual power loss.

[0265] Furthermore, the charging signal value includes: an input current value and an input voltage value of an inverter in the wireless charging transmitting end; and the method further includes: acquiring the input current value and the input voltage value.

[0266] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art that are not disclosed in this disclosure. The specification and examples are to be considered exemplary only, and the true scope and spirit of the present invention are indicated by the following claims.

[0267] It should be understood that the present invention is not limited to the exact construction that has been described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A wireless charging method, It is characterized in that Applied to a wireless charging receiving terminal, the method includes: When wireless charging is performed according to the first protection mechanism, obtaining the transmission power of the wireless charging transmitting end; Determining the receiving power of the wireless charging receiving end; Determining actual loss according to the transmit power and the receive power; Determining the charging power of wireless charging according to the power interval corresponding to the actual loss; determining the charging power of wireless charging according to the power interval corresponding to the actual loss includes: Determining whether the actual loss corresponds to the power interval where the current charging power is located according to the actual loss and the target loss in the power interval where the current charging power is located; If the actual loss does not correspond to the power interval where the current charging power is located, adjust the current charging power; If the power interval corresponding to the actual loss is not the power interval corresponding to the charging power before redetermining, before redetermining the current charging power, outputting prompt information of the wireless charging receiving end and / or the wireless charging transmitting end; If the actual loss does not correspond to the power interval where the current charging power is located, adjusting the current charging power includes: After the prompt information is output for a predetermined time, if the power interval corresponding to the actual loss is still not the power interval corresponding to the charging power before re-determination, the current charging power is adjusted.

2. The method according to claim 1, It is characterized in that If the actual loss does not correspond to the power interval where the current charging power is located, adjusting the current charging power includes: If the actual loss does not correspond to the power interval where the current charging power is located, and the actual loss is greater than the target loss in the power interval where the current charging power is located, reduce the current charging power.

3. The method according to any one of claims 1 to 2, It is characterized in that The method further comprises: Before performing the wireless charging, interacting with the wireless charging transmitter to verify whether the wireless charging transmitter supports the first type of charging protocol charging; When the verification information passes the verification, determining to perform wireless charging according to the first type of charging protocol; When wireless charging is performed using the first type of charging protocol, wireless charging protection is performed according to the first protection mechanism.

4. The method according to claim 3, It is characterized in that The method further comprises: When the verification information fails to pass the verification, performing wireless charging between the wireless charging transmitting end and the wireless charging receiving end according to the second type of charging protocol; When wireless charging is performed using the second type of charging protocol, wireless charging protection is performed according to a second protection mechanism different from the first protection mechanism.

5. The method according to claim 3, It is characterized in that The first type of charging protocol includes: a private charging protocol or an extended power specification EPP protocol.

6. A wireless charging method, It is characterized in that Applied to a wireless charging transmitter, the method includes: Sending charging information of the wireless charging transmitting end to the wireless charging receiving end; the charging information includes: transmission power or a charging signal value for calculating the transmission power, which is used for the wireless charging receiving end to determine the actual loss in combination with the receiving power; and redetermining the charging power based on the power interval corresponding to the actual loss with the wireless charging receiving end, including: determining whether the actual loss corresponds to the power interval where the current charging power is located according to the actual loss and the target loss in the power interval where the current charging power is located; if the actual loss does not correspond to the power interval where the current charging power is located, adjusting the current charging power; if the power interval corresponding to the actual loss is not the power interval corresponding to the charging power before redetermining, before redetermining the current charging power, outputting prompt information of the wireless charging receiving end and / or the wireless charging transmitting end; after the prompt information is output for a predetermined period of time, if the power interval corresponding to the actual loss is still not the power interval corresponding to the charging power before redetermining, adjusting the current charging power.

7. The method according to claim 6, It is characterized in that The charging signal value includes: an input current value and an input voltage value of an inverter in the wireless charging transmitting end; The method further comprises: The input current value and the input voltage value are obtained.

8. A wireless charging device, It is characterized in that Applied in a wireless charging receiving terminal, the device comprises: A first acquisition module, used to acquire the transmission power of the wireless charging transmitting end when wireless charging is performed according to the first protection mechanism; A first determining module, used to determine the receiving power of the wireless charging receiving end; A second determination module, configured to determine an actual loss according to the transmit power and the receive power; A third determination module is used to determine the charging power of the wireless charging according to the power interval corresponding to the actual loss; the third determination module is used to determine whether the actual loss corresponds to the power interval where the current charging power is located according to the actual loss and the target loss in the power interval where the current charging power is located; if the actual loss does not correspond to the power interval where the current charging power is located, adjust the current charging power; a prompt module, configured to output prompt information of the wireless charging receiving end and / or the wireless charging transmitting end before redetermining the current charging power if the power interval corresponding to the actual loss is not the power interval corresponding to the charging power before redetermining; The third determination module is specifically configured to adjust the current charging power if the power interval corresponding to the actual loss is still not the power interval corresponding to the charging power before re-determination after the prompt information is output for a predetermined period of time.

9. The device according to claim 8, It is characterized in that The third determination module is used to reduce the current charging power if the actual loss does not correspond to the power interval where the current charging power is located, and the actual loss is greater than the target loss in the power interval where the current charging power is located.

10. The device according to any one of claims 8 to 9, It is characterized in that The device also includes: A verification module, used for exchanging verification information with the wireless charging transmitting end whether the first type of charging protocol charging is supported before the wireless charging is performed; a fourth determination module, configured to determine to perform wireless charging according to the first type of charging protocol when the verification information passes the verification; The first protection module is used to perform wireless charging protection according to the first protection mechanism when the first type of charging protocol is used for wireless charging.

11. The device according to claim 10, It is characterized in that The device also includes: a charging module, configured to perform wireless charging between the wireless charging transmitting end and the wireless charging receiving end according to a second type of charging protocol when the verification information fails to pass the verification; The second protection module is used to perform wireless charging protection according to a second protection mechanism different from the first protection mechanism when the second type of charging protocol is used for wireless charging.

12. The device according to claim 10, It is characterized in that The first type of charging protocol includes: a private charging protocol or an extended power specification EPP protocol.

13. A wireless charging device, It is characterized in that Applied to a wireless charging transmitter, the device comprises: A sending module, used to send charging information of the wireless charging sending end to the wireless charging receiving end; the charging information includes: transmission power or a charging signal value for calculating the transmission power, which is used for the wireless charging receiving end to determine the actual loss in combination with the receiving power; The fifth determination module is used to redetermine the charging power with the wireless charging receiving end based on the power interval corresponding to the actual loss, including: determining whether the actual loss corresponds to the power interval where the current charging power is located according to the actual loss and the target loss in the power interval where the current charging power is located; if the actual loss does not correspond to the power interval where the current charging power is located, adjusting the current charging power; if the power interval corresponding to the actual loss is not the power interval corresponding to the charging power before redetermining, before redetermining the current charging power, outputting prompt information of the wireless charging receiving end and / or the wireless charging transmitting end; after the prompt information is output for a predetermined period of time, if the power interval corresponding to the actual loss is still not the power interval corresponding to the charging power before redetermining, adjusting the current charging power.

14. The device according to claim 13, It is characterized in that The charging signal value includes: an input current value and an input voltage value of an inverter in the wireless charging transmitting end; The device also includes: The second acquisition module is used to acquire the input current value and the input voltage value.

15. A charging device, It is characterized in that include: processor; a memory for storing processor-executable instructions; The processor is configured to implement the method provided in any one of claims 1 to 5 or 6 to 7 by executing the executable instructions.

16. A computer storage medium storing executable instructions; after the executable instructions are executed by a processor, the method provided in any one of claims 1 to 5 or 6 to 7 can be implemented.

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