Conversion apparatus for wireless charging and control method thereof

Abstract

The invention discloses conversion equipment for wireless charging and a control method thereof, the conversion equipment is arranged between wireless power supply equipment and to-be-charged equipment, the control method comprises the following steps: acquiring a first wireless charging protocol supported by the wireless power supply equipment, and acquiring a second wireless charging protocol supported by the to-be-charged equipment; when the first wireless charging protocol and the second wireless charging protocol are different, communicating with the wireless power supply equipment through the first wireless charging protocol, and receiving power supplied by the wireless power supply equipment; and communicating with the to-be-charged equipment according to the second wireless charging protocol, and charging the to-be-charged equipment. According to the conversion equipment for wireless charging and the control method thereof, efficient charging can be realized when the charging protocols supported by the wireless power supply equipment and the to-be-charged equipment are inconsistent.

Description

Technical Field

[0001] This application relates to the field of wireless charging technology, and more particularly to a conversion device for wireless charging and its control method. Background Art

[0002] With the popularization of wireless charging technology, more and more terminal devices have been equipped with wireless charging functions. However, due to different production years, there may be differences in the charging protocols used between wireless power supply devices and devices to be charged.

[0003] When the charging protocols used by the wireless power supply device and the device to be charged do not match (i.e., are not exactly the same), the charging power may be degraded, or there may be situations of repeated power off or inability to charge due to protocol incompatibility, resulting in a poor user experience.

[0004] Therefore, improvements are needed to at least partially solve the above problems. Summary of the Invention

[0005] A series of simplified concepts are introduced in the Summary of the Invention section, which will be further described in detail in the Detailed Description section. The Summary of the Invention section of the present invention does not mean to attempt to define the key features and essential technical features of the claimed technical solution, nor does it mean to attempt to determine the protection scope of the claimed technical solution.

[0006] Embodiments of this application provide a conversion device for wireless charging and its control method, which can enable the wireless power supply device and the device to be charged to achieve efficient charging even when the charging protocols do not match, avoiding repeated power off or inability to charge, thereby significantly improving the user experience.

[0007] In a first aspect, embodiments of this application provide a control method for a conversion device for wireless charging. The conversion device is arranged between a wireless power supply device and a device to be charged, and the control method includes:

[0008] Obtain a first wireless charging protocol supported by the wireless power supply device, and obtain a second wireless charging protocol supported by the device to be charged;

[0009] Determine whether the first wireless charging protocol is the same as the second wireless charging protocol;

[0010] When the first wireless charging protocol is different from the second wireless charging protocol, communicate with the wireless power supply device using the first wireless charging protocol, receive power supply from the wireless power supply device, communicate with the device to be charged using the second wireless charging protocol, and charge the device to be charged.

[0011] Exemplarily, the first wireless charging protocol is Qi1.0 protocol, Qi1.2 protocol, Qi1.3 protocol, Qi2.0 protocol or MagSafe protocol;

[0012] The second wireless charging protocol is Qi1.0 protocol, Qi1.2 protocol, Qi1.3 protocol, Qi2.0 protocol or MagSafe protocol.

[0013] Exemplarily, the control method further includes:

[0014] When the first wireless charging protocol and the second wireless charging protocol are the same, and both the first wireless charging protocol and the second wireless charging protocol are Qi1.3 protocol or Qi2.0 protocol, data is transparently transmitted between the wireless power supply device and the device to be charged, and the power supply of the wireless power supply device is received to charge the device to be charged.

[0015] Exemplarily, when the first wireless charging protocol is Qi1.2 protocol, Qi1.3 protocol or Qi2.0 protocol, a first received power is fed back to the wireless power supply device, where the first received power is the power of the power supply received by the conversion device;

[0016] When the second wireless charging protocol is Qi1.2 protocol, Qi1.3 protocol or Qi2.0 protocol, foreign object detection is performed according to the transmission power of the conversion device and the second received power fed back by the device to be charged.

[0017] An embodiment of the present application provides a conversion device for wireless charging, and the conversion device includes:

[0018] A receiving coil for receiving the power supply of the wireless power supply device;

[0019] A transmitting coil for charging the device to be charged;

[0020] A first magnetic attraction unit, and the first magnetic attraction unit surrounds the transmitting coil;

[0021] A control unit, the control unit is connected to the transmitting coil and the receiving coil, and is used to obtain the first wireless charging protocol supported by the wireless power supply device through the receiving coil, obtain the second wireless charging protocol supported by the device to be charged through the transmitting coil, and determine whether the first wireless charging protocol and the second wireless charging protocol are the same;

[0022] The control unit is further configured to, when the first wireless charging protocol is different from the second wireless charging protocol, control the receiving coil to communicate with the wireless power supply device using the first wireless charging protocol, and control the transmitting coil to communicate with the device to be charged using the second wireless charging protocol.

[0023] Exemplarily, the first wireless charging protocol is Qi1.0 protocol, Qi1.2 protocol, Qi1.3 protocol, Qi2.0 protocol or MagSafe protocol;

[0024] The second wireless charging protocol is Qi1.0 protocol, Qi1.2 protocol, Qi1.3 protocol, Qi2.0 protocol or MagSafe protocol.

[0025] Exemplarily, the control unit is further configured to, when the first wireless charging protocol is the same as the second wireless charging protocol, and both the first wireless charging protocol and the second wireless charging protocol are Qi1.3 protocol or Qi2.0 protocol, control the receiving coil and the transmitting coil to perform data transparent transmission between the wireless power supply device and the device to be charged.

[0026] Exemplarily, the control unit is further configured to, when the first wireless charging protocol is Qi1.2 protocol, Qi1.3 protocol or Qi2.0 protocol, feedback a first received power to the wireless power supply device through the receiving coil, where the first received power is the power of the power supply received by the receiving coil;

[0027] The control unit is further configured to, when the second wireless charging protocol is Qi1.2 protocol, Qi1.3 protocol or Qi2.0 protocol, perform foreign object detection according to the transmitting power of the transmitting coil and a second received power fed back by the device to be charged.

[0028] Exemplarily, the conversion device further includes a second magnetic attraction unit, and the second magnetic attraction unit surrounds the receiving coil.

[0029] Exemplarily, the conversion device further includes a power conversion unit, and the power conversion unit is configured to perform power conversion between the receiving coil and the transmitting coil.

[0030] According to the conversion device for wireless charging and its control method of the present invention, when the charging protocols supported by the wireless power supply device and the device to be charged are inconsistent, the conversion device can communicate with the wireless power supply device using the first wireless charging protocol and communicate with the device to be charged using the second wireless charging protocol, so that the wireless power supply device and the device to be charged can efficiently communicate and transfer energy through the conversion device, enabling efficient charging, avoiding repeated power outages or inability to charge, and thus significantly improving the user experience. Brief Description of the Drawings

[0031] The following drawings of the present application are hereby incorporated as part of the present application for understanding the present application. The embodiments of the present application shown in the drawings and their descriptions are used to explain the device and principle of the present application. In the drawings,

[0032] Figure 1 is a schematic structural block diagram of a conversion device according to an embodiment of the present application;

[0033] Figure 2 is a schematic flowchart of a control method for a conversion device according to an embodiment of the present application.

[0034] Description of Reference Numerals:

[0035] 100 - conversion device, 110 - receiving coil, 120 - transmitting coil, 130 - control unit, 140 - first magnetic attraction unit, 150 - second magnetic attraction unit.

[0036] 200 - wireless power supply device, 300 - device to be charged. Detailed Description of the Embodiments

[0037] In the following description, numerous specific details are given to provide a more thorough understanding of the present application. However, it will be apparent to one of ordinary skill in the art that the present application may be practiced without one or more of these details. In other instances, some well-known technical features are not described to avoid obscuring the present application.

[0038] It should be understood that the present application can be implemented in different forms and should not be construed as limited to the embodiments set forth herein. On the contrary, these embodiments are provided to make the disclosure thorough and complete, and to fully convey the scope of the present application to those skilled in the art. In the drawings, for clarity, the dimensions and relative dimensions of layers and regions may be exaggerated. Like reference numerals denote like elements throughout.

[0039] It should be understood that although the terms first, second, third, etc. may be used to describe various elements, components, regions, layers, and / or parts, these elements, components, regions, layers, and / or parts should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer, or part from another element, component, region, layer, or part. Thus, without departing from the teachings of the present application, the first element, component, region, layer, or part discussed below may be referred to as the second element, component, region, layer, or part.

[0040] Spatial relationship terms such as "under", "below", "lower", "beneath", "above", "upper", etc. may be used herein for convenience of description to describe the relationship of one element or feature shown in the figures with other elements or features. It should be understood that the spatial relationship terms are intended to include different orientations of the device in use and operation in addition to the orientation shown in the figures.

[0041] The purpose of the terms used herein is only to describe specific embodiments and is not a limitation of the present application. As used herein, the singular forms "a", "an" and "the" are also intended to include the plural forms unless the context clearly dictates otherwise. It should also be understood that the terms "comprising" and / or "including", when used in this specification, identify the presence of the stated features, integers, steps, operations, elements and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups. As used herein, the term "and / or" includes any and all combinations of the associated listed items.

[0042] Refer to the attached Figure 1 An exemplary description is given of a conversion device 100 for wireless charging according to an embodiment of the present application. The conversion device 100 includes a receiving coil, a transmitting coil, a first magnetic attraction unit 140, and a control unit 130.

[0043] The receiving coil 110 is disposed on the first side of the conversion device 100 and is used to receive power supply from the wireless power supply device 200. The wireless power supply device 200 may be a wireless charger having a transmitting coil, and the receiving coil 110 can receive the power supply of the transmitting coil in the wireless power supply device 200 through the principle of electromagnetic induction.

[0044] The transmitting coil 120 is disposed on the second side of the conversion device 100, that is, on the side opposite to the receiving coil 110, and is used to charge the device to be charged 300. The device to be charged 300 may be an electronic device such as a mobile phone capable of wireless charging and has a receiving coil. The transmitting coil 120 can charge the receiving coil in the device to be charged 300 through the principle of electromagnetic induction.

[0045] The control unit 130 is connected to the receiving coil 110 and the transmitting coil 120. The control unit 130 can be arranged between the transmitting coil and the receiving coil to make the mechanism of the conversion device 100 more compact. The control unit 130 is used to obtain the first wireless charging protocol supported by the wireless power supply device 200 through the receiving coil, and obtain the second wireless charging protocol supported by the device to be charged 300 through the transmitting coil. Specifically, when the conversion device 100 is located between the wireless power supply device 200 and the device to be charged 300, the wireless power supply device 200 can send information to the receiving coil 110 in the form of frequency shift keying modulation (FSK) through its transmitting coil, and the control unit 130 can send information to the transmitting coil of the wireless power supply device 200 in the form of amplitude shift keying modulation (ASK) through the receiving coil 110. Thus, the control unit 130 and the wireless power supply device 200 can perform information interaction to obtain the first wireless charging protocol supported by the wireless power supply device 200. The first wireless charging protocol can be Qi 1.0 protocol, Qi 1.2 protocol (including protocols starting with Qi 1.2 such as Qi 1.2.4), Qi 1.3 (including protocols starting with Qi 1.3 such as Qi 1.3.2) protocol, Qi 2.0 protocol or MagSafe protocol. Among them, the Qi 2.0 protocol incorporates the MagSafe magnetic attraction feature of Apple to form the MPP specification, and the MagSafe protocol is the charging protocol supported by MagSafe chargers. The control unit 130 can send information to the receiving coil of the device to be charged 300 in the form of frequency shift keying modulation (FSK) through its transmitting coil 120, and the device to be charged 300 can send information to the transmitting coil 120 in the form of amplitude shift keying modulation (ASK) through its receiving coil. Thus, the control unit 130 and the device to be charged 300 can perform information interaction to obtain the second wireless charging protocol supported by the device to be charged 300. The second wireless charging protocol can be Qi 1.0 protocol, Qi 1.2 protocol (including protocols starting with Qi 1.2 such as Qi 1.2.4), Qi 1.3 (including protocols starting with Qi 1.3 such as Qi 1.3.2) protocol, Qi 2.0 protocol or MagSafe protocol. After the control unit 130 obtains the first wireless charging protocol and the second wireless charging protocol, it determines whether they are the same.

[0046] When the first wireless charging protocol is different from the second wireless charging protocol, the control unit 130 can control the receiving coil 110 to communicate with the wireless power supply device 200 according to the first wireless charging protocol and receive power from the wireless power supply device 200. Since the first wireless charging protocol is the charging protocol supported by the wireless power supply device 200, the best energy transfer effect can be achieved between the wireless power supply device 200 and the conversion device 100. The control transmitting coil 120 communicates with the device to be charged 300 according to the second wireless charging protocol, and charges the device to be charged 300 by using the electric energy received from the wireless power supply device 200. Since the second wireless charging protocol is the charging protocol supported by the device to be charged 300, the best energy transfer effect can be achieved between the wireless power supply device 200 and the device to be charged 300. For example, when the first charging protocol is the Qi1.2 protocol and the second charging protocol is the MagSafe protocol, that is, when the charging protocol supported by the wireless power supply device 200 is the Qi1.2 protocol and the charging protocol supported by the device to be charged 300 is the MagSafe protocol, the device to be charged 300 cannot be directly charged by the wireless power supply device 200. However, through the conversion device 100 of the present application, communication can be carried out with the wireless power supply device 200 according to the Qi1.2 protocol, the power of the wireless power supply device 200 can be received, and then communication can be carried out with the device to be charged 300 according to the MagSafe protocol, and the device to be charged 300 can be charged by using the electric energy received from the wireless power supply device 200. It should be noted that the conversion device 100 of the present application supports the function of multi-protocol communication. For example, it supports protocols such as Qi1.0 protocol, Qi1.2 protocol, Qi1.3 protocol, Qi2.0 protocol, MagSafe protocol, etc. The communication protocols supported by the conversion device 100 can cover all communication protocols used between all wireless power supply devices 200 and devices to be charged 200 known to those skilled in the art. Another example is that when the first charging protocol is the Qi1.2 protocol and the second charging protocol is the Qi2.0 protocol, that is, when the charging protocol supported by the wireless power supply device 200 is the Qi1.2 protocol and the charging protocol supported by the device to be charged 300 is the Qi2.0 protocol, when directly charging the device to be charged 300 through the wireless power supply device 200, due to the mismatch of the charging protocol, usually only low-power charging of 5W can be carried out, and there may be a situation of repeated power-off. However, through the conversion device 100 of the present application, communication can be carried out with the wireless power supply device 200 according to the Qi1.2 protocol, receive the power of the wireless power supply device 200 at a maximum power of 15W, and then communicate with the device to be charged 300 according to the Qi2.0 protocol, and charge the device to be charged 300 at a maximum power of 15W, which can achieve efficient charging, avoid repeated power-off or inability to charge, and thus can significantly improve the user experience.The conversion device according to the present application can convert different types of charging protocols (Qi protocol and MagSafe protocol) and different versions of the same protocol (different versions of the Qi protocol), eliminating the problem of inconsistent types or versions of the protocols supported by the wireless power supply device 200 and the device to be charged 300, enabling efficient charging between new and old devices, avoiding repeated power outages or inability to charge, rejuvenating old devices, and improving charging efficiency.

[0047] When the first wireless charging protocol and the second wireless charging protocol are the same, and both the first wireless charging protocol and the second wireless charging protocol are Qi1.3 protocol or Qi2.0, the control unit 130 can control the receiving coil 110 and the transmitting coil 120 to perform data transparent transmission between the wireless power supply device 200 and the device to be charged 300, that is, the information received from the wireless power supply device 200 through the receiving coil 110 is sent to the device to be charged 300 through the transmitting coil 120 without any change, and the information received from the device to be charged 300 through the transmitting coil 120 is sent to the wireless power supply device 200 through the receiving coil 110 without any change, thereby realizing communication between the wireless power supply device 200 and the device to be charged 300. Moreover, the electric energy received from the wireless power supply device 200 through the receiving coil 110 is provided to the device to be charged 300 through the transmitting coil 120 at the same power. In some embodiments, a reminder unit for sending reminder information is provided in the conversion device 100, and the control unit 130 is connected to the reminder unit for controlling the reminder unit to send a reminder information when the first wireless charging protocol and the second wireless charging protocol are the same, to remind the user that there is no need to use the conversion device 100 and the wireless power supply device 200 can be directly used to charge the device to be charged 300. The reminder unit may include an indicator light and / or a speaker for sending light and / or sound reminder information.

[0048] In the embodiments of the present application, when the first wireless charging protocol is the Qi1.2 protocol, the Qi1.3 protocol, or the Qi2.0 protocol, the wireless power supply device 200 supports foreign object detection (FOD). The control unit 130 can feedback the first received power to the wireless power supply device 200 through the receiving coil 110, for example, regularly feedback the first received power at a certain time interval for the wireless power supply device 200 to perform foreign object detection. Wherein, the first received power is the power of the power supply received by the receiving coil 110. Thus, the wireless power supply device 200 can perform foreign object detection based on the transmission power of its transmitting coil and the first received power (i.e., the power of the power supply received by the receiving coil 110) to determine whether there is a foreign object between the wireless power supply device 200 and the conversion device 100. Specifically, the wireless power supply device 200 can determine whether there is a foreign object between the wireless power supply device 200 and the conversion device 100 according to whether the difference between the transmission power of its transmitting coil and the first received power is greater than a set threshold. When the difference is greater than the set threshold, it indicates that there is a foreign object between the two, and the wireless power supply device 200 can stop power supply to ensure safety.

[0049] In the embodiments of the present application, when the second wireless charging protocol is the Qi1.2 protocol, the Qi1.3 protocol, or the Qi2.0 protocol, the device to be charged 300 supports foreign object detection. The device to be charged 300 can feedback the second received power to the conversion device 100, where the second received power is the power of the power supply received by the receiving coil in the device to be charged 300 (i.e., the received power of this receiving coil). The control unit 130 can perform foreign object detection according to the transmission power of the conversion device and the second received power feedback by the device to be charged 300 to determine whether there is a foreign object between the wireless power supply device 200 and the conversion device 100. The transmission power of the conversion device is the transmission power of the transmitting coil 120 (i.e., the power of the transmitting coil to supply power to the device to be charged 300). Specifically, the control unit 130 can determine whether there is a foreign object between the wireless power supply device 200 and the conversion device 100 according to whether the difference between the transmission power of the transmitting coil 120 and the second received power is greater than a set threshold. When the difference is greater than the set threshold, it indicates that there is a foreign object between the two, and the control unit 130 can control the transmitting coil 120 to stop power supply to ensure safety.

[0050] In an embodiment of the present application, the control unit 130 may include a communication chip (or communication chipset) that supports Qi 1.0 protocol, Qi 1.2 protocol, Qi 1.3 protocol, Qi 2.0 protocol, and MagSafe protocol. The communication chip (or communication chipset) can modulate and demodulate signals through the receiving coil 110 and the transmitting coil 120 to achieve information transmission. The communication chip (or communication chipset) also has an encryption and decryption module for encrypting and decrypting the transmitted information when the first wireless charging protocol and / or the second wireless charging protocol is the Qi 1.3 protocol or the Qi 2.0 protocol. In an embodiment of the present application, the conversion device 100 further includes a power conversion unit for performing power conversion between the receiving coil 110 and the transmitting coil 120. For example, when the first charging protocol is the Qi 1.2 protocol and the second charging protocol is the MagSafe protocol, it can convert the 10W or 15W power received from the receiving coil 110 into 7.5W and provide it to the device 300 to be charged through the transmitting coil 120. The power conversion unit may include a frequency converter or other suitable devices capable of performing power conversion between the receiving coil 110 and the transmitting coil 120. The control unit 130 is connected to the power conversion unit and is used to control the power conversion unit to perform (or not perform) power conversion according to the first charging protocol and the second charging protocol.

[0051] In an embodiment of the present application, the conversion device 100 further includes a first magnetic attraction unit 140 and a second magnetic attraction unit 150. The first magnetic attraction unit 140 surrounds the receiving coil 110 and is used to attract and combine with a corresponding magnetic attraction unit of the wireless power supply device 200 when the wireless power supply device 200 has the corresponding magnetic attraction unit, so that the receiving coil 110 and the transmitting coil in the wireless power supply device 200 can be better aligned, improving the energy transmission efficiency. The second magnetic attraction unit 150 surrounds the transmitting coil 120 and is used to attract and combine with a corresponding magnetic attraction unit of the device 300 to be charged when the device 300 to be charged has the corresponding magnetic attraction unit, so that the transmitting coil 120 and the receiving coil in the device 300 to be charged can be better aligned, improving the energy transmission efficiency. The first magnetic attraction unit 140 and the second magnetic attraction unit 150 may be an annular magnet array. In some embodiments, the first magnetic attraction unit 140 and the second magnetic attraction unit 150 may not be provided in the conversion device 100.

[0052] In some embodiments, the conversion device 100 may further include a battery and an AC-DC converter. The battery can charge the control unit 130 before the wireless power supply device 200 officially charges the conversion device 100, so that it can normally communicate with the wireless power supply device 200 and the device to be charged 300 through the receiving coil 110 and the transmitting coil 120. The AC-DC converter is used to convert the alternating current generated by electromagnetic induction in the receiving coil 110 into direct current to charge the battery. In some embodiments, the conversion device 100 may not be provided with a battery, but directly convert the alternating current generated by electromagnetic induction in the receiving coil 110 into direct current to supply power to the control unit 130.

[0053] According to the conversion device 100 for wireless charging of the present application, as long as it is placed between the wireless power supply device 200 and the device to be charged 300, when the charging protocols supported by the wireless power supply device 200 and the device to be charged 300 are inconsistent, it can communicate with the wireless power supply device 200 using the first wireless charging protocol and communicate with the device to be charged 300 using the second wireless charging protocol, so that the wireless power supply device 200 and the device to be charged 300 can efficiently communicate and transfer energy through the conversion device 100, enabling efficient charging, avoiding repeated power outages or inability to charge, and thus significantly improving the user experience.

[0054] See Appendix Figure 2 In addition, the embodiment of the present application also provides a control method for the conversion device 100 for wireless charging. The conversion device 100 may be the conversion device 100 in the above embodiment, which is arranged between the wireless power supply device 200 and the device to be charged 300. The control method of the conversion device 100 includes:

[0055] S100: Obtain the first wireless charging protocol supported by the wireless power supply device 200, and obtain the second wireless charging protocol supported by the device to be charged 300;

[0056] Specifically, when the conversion device 100 is located between the wireless power supply device 200 and the device to be charged 300, the wireless power supply device 200 can send information to the receiving coil 110 in the form of frequency shift keying modulation (FSK) through its transmitting coil. The control unit 130 in the conversion device 100 can send information to the transmitting coil of the wireless power supply device 200 in the form of amplitude shift keying modulation (ASK) through the receiving coil 120. Thus, the control unit 130 and the wireless power supply device 200 can conduct information interaction to obtain the first wireless charging protocol supported by the wireless power supply device 200. The first wireless charging protocol can be Qi1.0 protocol, Qi1.2 protocol (including protocols starting with Qi1.2 such as Qi1.2.4), Qi1.3 (including protocols starting with Qi1.3 such as Qi1.3.2) protocol, Qi2.0 protocol or MagSafe protocol. Among them, the Qi2.0 protocol incorporates the MagSafe magnetic attraction feature of Apple Inc. to form the MPP specification, and the MagSafe protocol is the charging protocol supported by MagSafe chargers. The control unit 130 can send information to the receiving coil of the device to be charged 300 in the form of frequency shift keying modulation (FSK) through its transmitting coil 120. The device to be charged 300 can send information to the transmitting coil 120 in the form of amplitude shift keying modulation (ASK) through its receiving coil. Thus, the control unit 130 and the device to be charged 300 can conduct information interaction to obtain the second wireless charging protocol supported by the device to be charged 300. The second wireless charging protocol can be Qi1.0 protocol, Qi1.2 protocol (including protocols starting with Qi1.2 such as Qi1.2.4), Qi1.3 (including protocols starting with Qi1.3 such as Qi1.3.2) protocol, Qi2.0 protocol or MagSafe protocol.

[0057] S200: Determine whether the first wireless charging protocol and the second wireless charging protocol are the same.

[0058] Specifically, after obtaining the first wireless charging protocol and the second wireless charging protocol, the control unit 130 determines whether they are the same.

[0059] S300: When the first wireless charging protocol and the second wireless charging protocol are different, communicate with the wireless power supply device 200 using the first wireless charging protocol, receive power supply from the wireless power supply device 200, and communicate with the device to be charged 300 using the second wireless charging protocol to charge the device to be charged 300.

[0060] Specifically, the control unit 130 can control the receiving coil 110 to communicate with the wireless power supply device 200 according to the first wireless charging protocol and receive power supply from the wireless power supply device 200. Since the first wireless charging protocol is the charging protocol supported by the wireless power supply device 200, the best energy transfer effect can be achieved between the wireless power supply device 200 and the conversion device 100. The control transmitting coil 120 communicates with the device to be charged 300 according to the second wireless charging protocol, and charges the device to be charged 300 by using the electric energy received from the wireless power supply device 200. Since the second wireless charging protocol is the charging protocol supported by the device to be charged 300, the best energy transfer effect can be achieved between the wireless power supply device 200 and the device to be charged 300. For example, when the first charging protocol is the Qi1.2 protocol and the second charging protocol is the MagSafe protocol, that is, when the charging protocol supported by the wireless power supply device 200 is the Qi1.2 protocol and the charging protocol supported by the device to be charged 300 is the MagSafe protocol, the device to be charged 300 cannot be directly charged by the wireless power supply device 200. Through the conversion device 100 of the present application, it can communicate with the wireless power supply device 200 according to the Qi1.2 protocol, receive power supply from the wireless power supply device 200, and then communicate with the device to be charged 300 according to the MagSafe protocol, and charge the device to be charged 300 by using the electric energy received from the wireless power supply device 200. For another example, when the first charging protocol is the Qi1.2 protocol and the second charging protocol is the Qi2.0 protocol, that is, when the charging protocol supported by the wireless power supply device 200 is the Qi1.2 protocol and the charging protocol supported by the device to be charged 300 is the Qi2.0 protocol, when directly charging the device to be charged 300 through the wireless power supply device 200, due to the mismatch of the charging protocols, it can usually only be charged at a low power of 5W, and there may be a situation of repeated power outages. Through the conversion device 100 of the present application, it can communicate with the wireless power supply device 200 according to the Qi1.2 protocol, receive power supply from the wireless power supply device 200 at a maximum power of 15W, and then communicate with the device to be charged 300 according to the Qi2.0 protocol, and charge the device to be charged 300 at a maximum power of 15W, which can achieve efficient charging, avoid repeated power outages or inability to charge, and thus can significantly improve the user experience.

[0061] In this embodiment, the control method of the conversion device 100 further includes:

[0062] S400: When the first wireless charging protocol and the second wireless charging protocol are the same, and both the first wireless charging protocol and the second wireless charging protocol are the Qi1.3 protocol or the Qi2.0 protocol, data is transparently transmitted between the wireless power supply device 200 and the device to be charged 300, and the power supply from the wireless power supply device 200 is received and the device to be charged 300 is charged.

[0063] Specifically, the control unit 130 can directly transmit the information received from the wireless power supply device 200 through the receiving coil 110 to the device to be charged 300 through the transmitting coil 120, and directly transmit the information received from the device to be charged 300 through the transmitting coil 120 to the wireless power supply device 200 through the receiving coil 110, thereby realizing communication between the wireless power supply device 200 and the device to be charged 300. Moreover, the electric energy received from the wireless power supply device 200 through the receiving coil 110 is provided to the device to be charged 300 through the transmitting coil 120 at the same power.

[0064] In some embodiments, when the determination result of step S200 is yes, step S500 is performed.

[0065] S500: When the first wireless charging protocol is different from the second wireless charging protocol, a reminder message is sent to remind the user to directly use the wireless power supply device 200 to charge the device to be charged 300.

[0066] Specifically, a reminder unit for sending a reminder message is provided in the conversion device 100. The control unit 130 is connected to the reminder unit. If the first wireless charging protocol is the same as the second wireless charging protocol, the control reminder unit sends a reminder message to remind the user that there is no need to use the conversion device 100 and the wireless power supply device 200 can be directly used to charge the device to be charged 300. The reminder unit may include an indicator light and / or a speaker for sending light and / or sound reminder messages.

[0067] In the embodiment of the present application, the control method further includes:

[0068] S600: When the first wireless charging protocol is the Qi1.2 protocol, the Qi1.3 protocol, or the Qi2.0 protocol, the first received power is fed back to the wireless power supply device 200, where the first received power is the power of the power supply received by the conversion device 100.

[0069] Specifically, when the first wireless charging protocol is Qi1.2 protocol, Qi1.3 protocol or Qi2.0 protocol, the wireless power supply device 200 supports foreign object detection (FOD). The control unit 130 can feedback the first received power to the wireless power supply device 200 through the receiving coil 110, for example, regularly feedback the first received power at a certain time interval for the wireless power supply device 200 to perform foreign object detection. Among them, the first received power is the power of the power supply received by the receiving coil 110. Thus, the wireless power supply device 200 can perform foreign object detection based on the transmission power of its transmitting coil and the first received power (i.e., the received power of the receiving coil 110) at the first received power to determine whether there is a foreign object between the wireless power supply device 200 and the conversion device 100. Specifically, the wireless power supply device 200 can determine whether there is a foreign object between the wireless power supply device 200 and the conversion device 100 according to whether the difference between the transmission power of its transmitting coil and the first received power is greater than a set threshold. When the difference is greater than the set threshold, it indicates that there is a foreign object between the two, and the wireless power supply device 200 can stop power supply to ensure safety.

[0070] S700: When the second wireless charging protocol is Qi1.2 protocol, Qi1.3 protocol or Qi2.0 protocol, foreign object detection is performed according to the transmission power of the conversion device 100 and the second received power feedback by the device to be charged 300. Among them, the transmission power of the conversion device 100 is the transmission power of the transmitting coil 120 (i.e., the power of the transmitting coil to supply power to the device to be charged 300). The second received power is the power of the power supply received by the device to be charged 300.

[0071] Specifically, when the second wireless charging protocol is Qi1.2 protocol, Qi1.3 protocol or Qi2.0 protocol, the device to be charged 300 supports foreign object detection. The wireless power supply device 200 can feedback the second received power to the conversion device 100. Among them, the second received power is the power of the power supply received by the receiving coil in the device to be charged 300 (i.e., the received power of this receiving coil). The control unit 130 can perform foreign object detection according to the transmission power of the transmitting coil 120 (i.e., the power of the transmitting coil to charge the device to be charged 300) and the second received power feedback by the device to be charged 300 to determine whether there is a foreign object between the wireless power supply device 200 and the conversion device 100. Specifically, the control unit 130 can determine whether there is a foreign object between the wireless power supply device 200 and the conversion device 100 according to whether the difference between the transmission power of the transmitting coil 120 and the second received power is greater than a set threshold. When the difference is greater than the set threshold, it indicates that there is a foreign object between the two, and the control unit 130 can control the transmitting coil 120 to stop power supply to ensure safety.

[0072] Although example embodiments have been described herein with reference to the accompanying drawings, it should be understood that the above example embodiments are merely exemplary and are not intended to limit the scope of the present application thereto. Those of ordinary skill in the art can make various changes and modifications therein without departing from the scope and spirit of the present application. All such changes and modifications are intended to be included within the scope of the present application as claimed in the appended claims.

[0073] Those of ordinary skill in the art can realize that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed in a hardware or software manner depends on the specific application and design constraints of the technical solution. Professional technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered to exceed the scope of the present application.

[0074] In several embodiments provided by the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the units is only a logical function division, and there can be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another device, or some features can be ignored or not executed.

[0075] In the specification provided herein, a large number of specific details are set forth. However, it can be understood that the embodiments of the present application can be practiced without these specific details. In some instances, well-known methods, structures, and technologies are not shown in detail so as not to obscure the understanding of this specification.

[0076] Similarly, it should be understood that, in order to streamline the present application and assist in understanding one or more of the various inventive aspects, in the description of the exemplary embodiments of the present application, the various features of the present application are sometimes grouped together into a single embodiment, figure, or description thereof. However, the method of the present application should not be construed as reflecting the intention that the claimed present application requires more features than those expressly recited in each claim. Rather, as reflected by the corresponding claims, the inventive point lies in being able to solve the corresponding technical problems with features fewer than all the features of a single disclosed embodiment. Therefore, the claims following the detailed description are hereby expressly incorporated into the detailed description, where each claim itself serves as a separate embodiment of the present application.

[0077] Those skilled in the art will appreciate that, except where features are mutually exclusive, any combination can be employed of all the features disclosed in this specification (including the accompanying claims, abstract and drawings), as well as of all the processes or units of any method or device so disclosed. Each feature disclosed in this specification (including the accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise.

[0078] In addition, those skilled in the art will appreciate that, although some embodiments described herein include some features included in other embodiments but not others, combinations of features of different embodiments are meant to be within the scope of this application and form different embodiments. For example, in the claims, any one of the claimed embodiments can be used in any combination.

[0079] It should be noted that the above embodiments are illustrative of the application and not restrictive of the application, and alternative embodiments can be designed by those skilled in the art without departing from the scope of the appended claims.

Claims

1. A control method for a conversion device used for wireless charging, characterized in that, The conversion device is arranged between the wireless power supply device and the device to be charged. The control method includes: Obtaining a first wireless charging protocol supported by the wireless power supply device and a second wireless charging protocol supported by the device to be charged; Determining whether the first wireless charging protocol is the same as the second wireless charging protocol; When the first wireless charging protocol is different from the second wireless charging protocol, communicating with the wireless power supply device using the first wireless charging protocol, receiving power supply from the wireless power supply device, and communicating with the device to be charged using the second wireless charging protocol to charge the device to be charged.

2. The control method according to claim 1, wherein: The first wireless charging protocol is Qi1.0 protocol, Qi1.2 protocol, Qi1.3 protocol, Qi2.0 protocol or MagSafe protocol; The second wireless charging protocol is Qi1.0 protocol, Qi1.2 protocol, Qi1.3 protocol, Qi2.0 protocol or MagSafe protocol.

3. The control method according to claim 2, wherein: The control method further includes: When the first wireless charging protocol is the same as the second wireless charging protocol, and both the first wireless charging protocol and the second wireless charging protocol are Qi1.3 protocol or Qi2.0 protocol, data is transparently transmitted between the wireless power supply device and the device to be charged, and the power supply from the wireless power supply device is received to charge the device to be charged.

4. The control method according to claim 3, wherein: When the first wireless charging protocol is Qi1.2 protocol, Qi1.3 protocol or Qi2.0 protocol, a first received power is fed back to the wireless power supply device, where the first received power is the power of the power supply received by the conversion device; When the second wireless charging protocol is Qi1.2 protocol, Qi1.3 protocol or Qi2.0 protocol, foreign object detection is performed according to the transmission power of the conversion device and a second received power fed back by the device to be charged.

5. A conversion device for wireless charging, characterized in that, The conversion device includes: A receiving coil for receiving power supply from the wireless power supply device; A transmitting coil for charging the device to be charged; A first magnetic attraction unit, and the first magnetic attraction unit surrounds the transmitting coil; A control unit, the control unit is connected to the transmitting coil and the receiving coil, and is used to obtain a first wireless charging protocol supported by the wireless power supply device through the receiving coil, obtain a second wireless charging protocol supported by the device to be charged through the transmitting coil, and determine whether the first wireless charging protocol is the same as the second wireless charging protocol; The control unit is further used to, when the first wireless charging protocol is different from the second wireless charging protocol, control the receiving coil to communicate with the wireless power supply device using the first wireless charging protocol, and control the transmitting coil to communicate with the device to be charged using the second wireless charging protocol.

6. The conversion device according to claim 5, wherein: The first wireless charging protocol is Qi1.0 protocol, Qi1.2 protocol, Qi1.3 protocol, Qi2.0 protocol or MagSafe protocol; The second wireless charging protocol is Qi1.0 protocol, Qi1.2 protocol, Qi1.3 protocol, Qi2.0 protocol or MagSafe protocol.

7. The conversion device according to claim 6, wherein the control unit is further configured to control data transparent transmission between the receiving coil and the transmitting coil between the wireless power supply device and the device to be charged when the first wireless charging protocol is the same as the second wireless charging protocol, and both the first wireless charging protocol and the second wireless charging protocol are Qi1.3 protocol or Qi2.0 protocol.

8. The conversion device according to claim 7, wherein the control unit is further configured to feedback a first received power to the wireless power supply device through the receiving coil when the first wireless charging protocol is Qi1.2 protocol, Qi1.3 protocol or Qi2.0 protocol, wherein the first received power is the power of the power supply received by the receiving coil; the control unit is further configured to perform foreign object detection according to the transmission power of the transmitting coil and a second received power fed back by the device to be charged when the second wireless charging protocol is Qi1.2 protocol, Qi1.3 protocol or Qi2.0 protocol.

9. The conversion device according to any one of claims 5-8, wherein the conversion device further includes a second magnetic attraction unit, and the second magnetic attraction unit surrounds the receiving coil.

10. The conversion device according to any one of claims 5-8, wherein the conversion device further includes a power conversion unit, and the power conversion unit is configured to perform power conversion between the receiving coil and the transmitting coil.

Images