A power supply device supporting wireless power supply and near field communication

Abstract

The embodiment of the present application discloses a power supply device (10) supporting wireless power supply and near field communication, comprising a wireless power supply module (101), a power supply coil (14) and a detection module (102); the wireless power supply module (101) is used to provide a power supply signal to the power supply coil (14) to power the electronic device; the detection module (102) is used to detect whether there is a target device in the detection area of ​​the power supply device and detect whether the target device is a PICC device. The target device is a device other than the power supply device and the electronic device. In response to the detection information output by the detection module (102), the operation mode of the power supply device (10) can be switched from the power supply mode to the PICC detection mode or the PICC protection mode. When the power supply device (10) is respectively operating in the power supply mode, the PICC detection mode and the PICC protection mode, the power of the power supply signal provided by the wireless power supply module to the power supply coil is reduced successively. The use of the embodiment of the present application can reduce the influence of PICC detection on wireless power supply and ensure power supply efficiency.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of wireless power supply technology, and in particular, to a power supply device that supports wireless power supply and near field communication. Background Art

[0002] Most existing power supply devices integrate wireless power supply and near-field communication (NFC) functions, which can not only provide wireless power to electronic devices, but also transmit data with proximity integrated circuit cards (PICC) of other devices. Since the magnetic field generated by wireless power supply is usually larger than the NFC magnetic field, the wireless power supply magnetic field may damage the PICC in other devices. When existing power supply devices detect the presence of other devices nearby while wirelessly powering an electronic device, they usually stop wireless power supply, thereby affecting the power supply efficiency of the power supply device and the user experience. Summary of the invention

[0003] The embodiment of the present application provides a power supply device that supports wireless power supply and near field communication, which can reduce the impact of PICC detection on wireless power supply and ensure the efficiency of wireless power supply.

[0004] In the first aspect, an embodiment of the present application provides a power supply device that supports wireless power supply and near-field communication, including a wireless power supply module, a power supply coil and a detection module, wherein the wireless power supply module is used to provide a power supply signal to the power supply coil, and the power supply coil uses the power supply signal to power the electronic device; the detection module is used to detect whether there is a target device in the detection area of ​​the power supply device and detect whether the target device is a PICC device; the operation mode of the power supply device includes a power supply mode, a PICC detection mode and a PICC protection mode; when the power supply device operates in the power supply mode, in response to the detection information output by the detection module, the operation mode of the power supply device is switched from the power supply mode to the PICC detection mode or the PICC protection mode; when the power supply device operates in the power supply mode, the PICC detection mode and the PICC protection mode respectively, the power of the power supply signal provided by the wireless power supply module to the power supply coil decreases successively; wherein, the target device is a device other than the power supply device and the electronic device.

[0005] In an embodiment of the present application, the wireless power supply module in the power supply device may include multiple operating modes, specifically including power supply mode, PICC detection mode and PICC protection mode. In response to the detection information output by the detection module in the power supply device, the operating mode of the power supply device can be switched from the power supply mode to the PICC detection mode or the PICC protection mode. When the wireless power supply module operates in the power supply mode, the PICC detection mode or the PICC protection mode, the wireless power supply module can provide a power supply signal with decreasing power to the power supply coil, so that the power supply coil generates magnetic fields of different strengths to power the electronic device, thereby flexibly meeting the power supply requirements under different operating modes. In this way, the power supply device can also continue to wirelessly power the current electronic device when performing PICC detection, avoiding the situation where the electronic device loses power. In summary, the power supply device provided in the embodiment of the present application can ensure the efficiency of PICC detection to prevent the PICC from being damaged while ensuring the efficiency of wireless power supply, which greatly meets the user's use needs.

[0006] In a possible implementation, in response to the power supply device operating in the power supply mode, the wireless power supply module provides a power supply signal of a first power to the power supply coil; in response to the power supply device operating in the PICC detection mode, the wireless power supply module provides a power supply signal of a second power to the power supply coil; in response to the power supply device operating in the PICC protection mode, the wireless power supply module provides a power supply signal of a third power to the power supply coil; wherein the first power is greater than the second power, and the second power is greater than the third power.

[0007] In the embodiment of the present application, when the power supply device is respectively operating in the power supply mode, PICC detection mode or PICC protection mode, the wireless power supply module can provide a power supply signal with decreasing power to the power supply coil, so that the power supply coil generates magnetic fields of different strengths, flexibly meeting the power supply requirements under different circumstances, avoiding the disconnection of the electronic device during the PICC detection period, ensuring the efficiency of wireless power supply, and preventing the PICC from being damaged, thus greatly ensuring the user experience. Exemplarily, the third power can be equal to 0, which is equivalent to directly turning off the wireless power supply module, that is, not performing wireless power supply.

[0008] In a possible implementation, the detection information output by the detection module is used to indicate: whether the target device other than the power supply device and the electronic device exists in the detection area; or whether a PICC device exists in the detection area of ​​the power supply device.

[0009] In an embodiment of the present application, the detection information output by the detection module can indicate whether there is a target device other than the power supply device and the electronic device in the detection area of ​​the power supply device, that is, whether a new device has entered the detection area; or, the detection information can indicate whether there is a PICC device in the detection area. The subsequent power supply device can switch to different operating modes in a timely manner based on the detection information output by the detection module to provide power supply signals of different powers to the power supply coil, while meeting the requirements of PICC detection, wireless power supply and PICC protection, and avoiding the situation where the electronic device is disconnected from charging and the PICC is damaged during the PICC detection.

[0010] In a possible implementation, in response to the presence of the target device in the detection area, the detection module outputs the detection information indicating that the power supply device operates in the PICC detection mode; in response to the absence of the target device in the detection area, the detection module outputs the detection information indicating that the power supply device operates in the power supply mode.

[0011] In an embodiment of the present application, when the detection module detects that a new device has entered the detection area, the power supply device can switch to the PICC detection mode to detect the PICC in time to prevent the PICC from being damaged. When the detection module detects that no new device has entered the detection area, the power supply device can maintain the power supply mode. In one embodiment, the power supply device is originally in a standby state. When the detection module detects that no device has entered the detection area, the power supply device can still operate in the standby state, that is, no wireless power supply is performed to save energy as much as possible.

[0012] In a possible implementation, in response to the target device being a PICC device, the detection module outputs the detection information to indicate that the power supply device operates in the PICC protection mode; in response to the target device not being a PICC device, the detection module outputs the detection information to indicate that the power supply device operates in the power supply mode.

[0013] In an embodiment of the present application, when the detection module detects that the target device is indeed a PICC device, the power supply device can operate in a PICC protection mode to prevent the PICC from being damaged in time; when the detection module detects that the target device is not a PICC device, the power supply device can operate in a power supply mode. Exemplarily, when the detection module does not detect whether the device is a PICC device, the power supply device can continue to operate in a PICC detection mode. In this way, the embodiment of the present application can flexibly switch between different operating modes according to actual conditions, which not only avoids the disconnection of the electronic device during the PICC detection period and ensures the efficiency of wireless power supply, but also prevents the PICC from being damaged, thereby greatly ensuring the user experience.

[0014] In a possible implementation, the detection module includes: a sensor module, used to detect whether the target device other than the power supply device and the electronic device exists in the detection area, and output a sensor detection signal; a near field communication module, used to detect whether the target device in the detection area is a PICC device, and output a near field communication module detection signal.

[0015] In an embodiment of the present application, the detection module may specifically include a sensor module and a near-field communication module. The sensor module can monitor in real time whether a device has entered the detection area of ​​the power supply device, and output a sensor detection signal, that is, the detection result of the sensor. The near-field communication module can be used to detect whether the device entering the detection area belongs to a PICC device, and output a near-field communication module detection signal, that is, the detection result of the near-field communication module. The subsequent power supply device can switch to different operating modes in time based on the detection results output by the sensor module and the near-field communication module to provide power supply signals of different powers to the power supply coil, thereby avoiding the situation where the electronic device is disconnected from charging during the PICC detection and the PICC is damaged.

[0016] In a possible implementation, the detection module is used to: in response to the sensor detection signal, the detection module outputs the detection information indicating that the power supply device operates in the PICC detection mode or the power supply mode; in response to the near field communication module detection signal, the detection module outputs the detection information indicating that the power supply device operates in the PICC protection mode or the power supply mode.

[0017] In the embodiment of the present application, in response to the sensor detection signal, that is, in response to the detection result output by the sensor module, the power supply device can switch to different operation modes. In response to the near field communication module detection signal, that is, in response to the detection result output by the near field communication module, the power supply device can switch to different operation modes. In this way, the power supply needs in different situations are met, and the electronic device is prevented from being disconnected from charging and the PICC is damaged during the PICC detection.

[0018] In a possible implementation, the detection information includes at least one of the sensor detection signal and the near field communication module detection signal, wherein: in response to the detection information including the sensor detection signal, the power supply device operates in the PICC detection mode or the power supply mode; in response to the detection information including the near field communication module detection signal, the power supply device operates in the PICC protection mode or the power supply mode.

[0019] In an embodiment of the present application, the detection information output by the detection module may include at least one of a sensor detection signal and a near field communication module detection signal. In response to the sensor detection signal, the power supply device may switch to a different operating mode. In response to the near field communication module detection signal, the power supply device may switch to a different operating mode. This satisfies the power supply requirements in different situations and avoids disconnection of the electronic device from charging and damage to the PICC during PICC detection.

[0020] In a possible implementation, in response to the detection information including the sensor detection signal, the wireless power supply module provides the power supply signal of the first power or the second power to the power supply coil; in response to the detection information including the near-field communication module detection signal, the wireless power supply module provides the power supply signal of the first power or the third power to the power supply coil.

[0021] In the embodiment of the present application, in response to the sensor detection signal, the power supply device can provide power supply signals of different powers to the power supply coil to meet the power supply requirements of PICC detection or wireless power supply, and avoid the electronic device from being disconnected during PICC detection. In response to the near-field communication module detection signal, the power supply device can provide power supply signals of different powers to the power supply coil to meet the power supply requirements of wireless power supply and PICC protection, ensure efficient power supply to the electronic device and avoid damage to the PICC.

[0022] In a possible implementation manner, the power supply device further includes: a control module, configured to control the power supply device to operate in the power supply mode, the PICC detection mode or the PICC protection mode in response to the detection information output by the detection module.

[0023] In the embodiment of the present application, the power supply device may further include a control module, which may control the operation mode switching of the power supply device based on the detection information output by the detection module to meet the power supply requirements in different situations. In this way, the electronic device is not disconnected from charging during the PICC detection period, the wireless power supply efficiency is ensured, and the PICC is prevented from being damaged.

[0024] In a possible implementation, the control module is used to: in response to the detection information including the sensor detection signal, the control module controls the power supply device to operate in the PICC detection mode or the power supply mode; in response to the detection information including the near field communication module detection signal, the control module controls the power supply device to operate in the PICC protection mode or the power supply mode.

[0025] In the embodiment of the present application, in response to the detection result output by the sensor module in the detection module, the control module can control the power supply device to operate in the PICC detection mode or the power supply mode. In response to the detection result output by the near field communication module in the detection module, the control module can control the power supply device to operate in the PICC protection mode or the power supply mode. In this way, the embodiment of the present application can realize flexible switching of different operation modes under different detection results through the controller to meet the power supply requirements in different situations.

[0026] In a possible embodiment, the control module is used to: in response to the detection information including the sensor detection signal, the control module controls the wireless power supply module to provide the power supply signal of the first power or the second power to the power supply coil; in response to the detection information including the near-field communication module detection signal, the control module controls the wireless power supply module to provide the power supply signal of the first power or the third power to the power supply coil.

[0027] In an embodiment of the present application, in response to the detection result output by the sensor module in the detection module, the control module can control the wireless power supply module to provide power supply signals of different powers to the power supply coil, so that the power supply coil generates magnetic fields of different strengths. In response to the detection result output by the near-field communication module in the detection module, the control module can control the wireless power supply module to provide power supply signals of different powers to the power supply coil, so that the power supply coil generates magnetic fields of different strengths. In this way, the embodiment of the present application can provide power supply signals of different powers under different detection results through the controller to meet the power supply requirements under different circumstances, which not only avoids the disconnection of electronic equipment during PICC detection, ensures the efficiency of wireless power supply, but also prevents damage to the PICC.

[0028] In a second aspect, an embodiment of the present application provides a power supply device, characterized in that it includes a wireless power supply module, a power supply coil, a detection module and a control module, wherein: the wireless power supply module is used to provide a power supply signal to the power supply coil, and the power supply coil uses the power supply signal to power the electronic device; the detection module is used to detect whether there is a target device in the detection area of ​​the power supply device and detect whether the target device is a PICC device; the control module is used to control the wireless power supply module to provide the power supply signal of the first power to the power supply coil, and is used to control the wireless power supply module to provide the power supply signal of the second power or the third power to the power supply coil in response to the detection information output by the detection module; wherein the target device is a device other than the power supply device and the electronic device, the first power is greater than the second power, and the second power is greater than the third power.

[0029] In a possible implementation, the detection module includes a sensor module and a near field communication module, wherein: the sensor module is used to detect whether the target device exists in the detection area; and the near field communication module is used to detect whether the target device in the detection area is a PICC device; the detection module is used to output the detection information according to the detection results of the sensor module and the near field communication module, and the detection information is used to indicate whether the target device exists in the detection area or whether the target device is a PICC device.

[0030] In a possible implementation, the control module is used to: in response to the detection information indicating that the target device exists in the detection area, control the wireless power supply module to provide a power supply signal of a second power to the power supply coil; in response to the detection information indicating that the target device belongs to a PICC device, control the wireless power supply module to provide a power supply signal of a third power to the power supply coil.

[0031] It should be understood that the power supply equipment provided in the second aspect of the present application is consistent with the technical solution of the first aspect of the present application. Its specific content and beneficial effects can be referred to the power supply equipment provided in the above-mentioned first aspect, and will not be repeated here.

[0032] In the third aspect, an embodiment of the present application provides a wireless power supply and PICC detection method, which is applied to a power supply device, wherein the power supply device includes a wireless power supply module, a power supply coil and a detection module; the operating modes of the power supply device include a power supply mode, a PICC detection mode and a PICC protection mode; the method includes: providing a power supply signal to the power supply coil through the wireless power supply module, and the power supply coil uses the power supply signal to power the electronic device; through the detection module, detecting whether there is a target device in the detection area of ​​the power supply device and detecting whether the target device is a PICC device, and the target device is a device other than the power supply device and the electronic device; when the power supply device is operating in the power supply mode, the operating mode of the power supply device is switched from the power supply mode to the PICC detection mode or the PICC protection mode; when the power supply device is respectively operating in the power supply mode, the PICC detection mode and the PICC protection mode, the power of the power supply signal provided by the wireless power supply module to the power supply coil decreases successively.

[0033] It should be understood that the method flow provided in the third aspect of the present application is consistent with the technical solution of the first aspect of the present application. Its specific content and beneficial effects can be referred to the power supply equipment provided in the above-mentioned first aspect, and will not be repeated here.

[0034] In a fourth aspect, an embodiment of the present application provides a power supply device, which may include: a processor and a memory, wherein the memory is used to store program code, and the processor is used to call the program code to implement the functions involved in the wireless power supply and PICC detection method process provided in the third aspect above. The power supply device may also include a communication interface for the power supply device to communicate with other devices or communication networks.

[0035] In a fifth aspect, an embodiment of the present application provides a computer-readable storage medium, which stores a computer program. When the computer program is executed by a processor, it implements the functions involved in the wireless power supply and PICC detection method process provided in the third aspect above.

[0036] In a sixth aspect, an embodiment of the present application provides a computer program, which includes instructions. When the instructions are executed by a computer, the computer can perform the functions involved in the wireless power supply and PICC detection method process provided in the third aspect above.

[0037] In the seventh aspect, an embodiment of the present application provides a chip, which includes a processor and a communication interface, and the processor is used to call and run instructions from the communication interface. When the processor executes the instructions, the chip performs the functions involved in the wireless power supply and PICC detection method process provided in the third aspect above.

[0038] In an eighth aspect, an embodiment of the present application provides a chip system, which includes a power supply device as described in any one of the first aspect or the second aspect, and is used to implement the functions involved in the wireless power supply and PICC detection method process provided in the third aspect. In a possible design, the chip system also includes a memory, which is used to store program instructions and data necessary for the wireless power supply and PICC detection method. The chip system can be composed of chips, or it can include chips and other discrete devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments of the present application or the background technology will be described below.

[0040] Figure 1 It is a schematic diagram of an application scenario provided in an embodiment of the present application.

[0041] Figure 2 It is a schematic diagram of the time domain waveform during the PICC detection process.

[0042] Figure 3 It is a structural schematic diagram of a power supply device provided in an embodiment of the present application.

[0043] Figure 4 It is a schematic diagram of a time domain waveform during a PICC detection process provided in an embodiment of the present application.

[0044] Figure 5 It is a structural schematic diagram of another power supply device provided in an embodiment of the present application.

[0045] Figure 6 It is a structural schematic diagram of another power supply device provided in an embodiment of the present application.

[0046] Figure 7 It is a flow chart of a wireless power supply and PICC detection method provided in an embodiment of the present application.

[0047] Figure 8 This is a schematic diagram of power variation of a power supply signal provided in an embodiment of the present application.

[0048] Fig. 9 This is a schematic diagram of power variation of another power supply signal provided in an embodiment of the present application.

[0049] Fig.10 It is a flow chart of another wireless power supply and PICC detection method provided in an embodiment of the present application. DETAILED DESCRIPTION

[0050] The embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0051] The terms "first", "second", "third" and "fourth", as well as "first", "second", "third" and "fourth" in the specification and claims of the present application and the drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally includes steps or units that are not listed, or optionally includes other steps or units inherent to these processes, methods, products or devices.

[0052] It should be understood that in the present application, "at least one (item)" means one or more, and "plurality" means two or more. "And / or" is used to describe the association relationship of associated objects, indicating that three relationships may exist. For example, "A and / or B" can mean: only A exists, only B exists, and A and B exist at the same time, where A and B can be singular or plural. The character " / " generally indicates that the objects associated before and after are in an "or" relationship. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b or c can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, c can be single or multiple.

[0053] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0054] The terms "component", "module", "system", etc. used in this specification are used to represent computer-related entities, hardware, firmware, a combination of hardware and software, software, or software in execution. For example, a component can be, but is not limited to, a process running on a processor, a processor, an object, an executable file, an execution thread, a program and / or a computer. By way of illustration, both applications running on a computing device and a computing device can be components. One or more components may reside in a process and / or an execution thread, and a component may be located on a computer and / or distributed between two or more computers. In addition, these components may be executed from various computer-readable media having various data structures stored thereon. Components may, for example, communicate through local and / or remote processes according to signals having one or more data packets (e.g., data from two components interacting with another component between a local system, a distributed system and / or a network, such as the Internet interacting with other systems through signals).

[0055] First, some terms in this application are explained to facilitate understanding by those skilled in the art.

[0056] (1) Wireless power supply technology, or magnetic induction wireless charging (wireless power transfer, WPT) technology, is a technology that transmits energy by coupling the AC magnetic field generated by the transmitting coil in the power supply device with the receiving coil in the electronic device.

[0057] (2) NFC technology is a technology that transmits data by coupling the AC magnetic field generated by the transmitting coil in the proximity coupling device (PCD) with the receiving coil in the proximity integrated circuit card (PICC).

[0058] In order to facilitate the understanding of the embodiments of the present application, the technical problems that the present application specifically aims to solve will be further analyzed and proposed below. As mentioned above, many power supply devices currently integrate wireless power supply technology and NFC technology. In addition, in order to prevent the wireless power supply magnetic field from damaging nearby PICCs, power supply devices often need to perform PICC detection. Exemplarily, when the power supply device detects the presence of a PICC nearby, it immediately turns off the wireless power supply to protect the PICC from being damaged by the wireless power supply magnetic field.

[0059] Figure 1 This is a schematic diagram of an application scenario provided by an embodiment of the present application. Figure 1 As shown, the application scenario may include a power supply device 10, an electronic device 20, and a device 30. The power supply device 10 has a wireless power supply function and a near field communication function. The power supply device 10 can wirelessly power the electronic device 20, and can communicate data with the device 30 by transmitting an NFC signal.

[0060] The electronic device 20 has a wireless charging function. Exemplarily, a battery is installed in the electronic device 20. Exemplarily, the electronic device 20 can be a smart phone, a tablet computer, a laptop computer, a smart watch, a smart bracelet, a smart helmet, smart glasses, a Bluetooth headset and other wearable devices, and can also be an electric car, a drone and a sweeping robot, etc. The battery in the electronic device 20 can be any one of a lead-acid battery, a nickel-cadmium battery, a nickel-iron battery, a nickel-metal hydride battery, a lithium-ion battery, etc. Exemplarily, no battery is installed in the electronic device 20. Exemplarily, the electronic device 20 can be a desktop computer, a landline phone, a radio frequency identification (RFID) card, etc.

[0061] The device 30 includes a proximity integrated circuit card, and the device 30 is a PICC device. For example, the device 30 may be a student card, a meal card, a bus card, a bank card, an identity card, or other device including a PICC.

[0062] like Figure 1As shown, the power supply device 10 wirelessly supplies power to the electronic device 20, and the device 30 enters the detection area of ​​the power supply device 10. It should be noted that the existing electronic devices with NFC function usually have PICC protection function inside. Therefore, the power supply device 10 wirelessly supplies power to the electronic device 20 without damaging the NFC function of the electronic device 20. Figure 1 As shown, the detection area of ​​the power supply device 10 is larger than the wireless power supply area. When any device enters the detection area of ​​the power supply device 10, the power supply device 10 can turn off the wireless power supply in time to prevent the wireless power supply magnetic field from damaging the PICC device.

[0063] The power supply device 10 finds that the device 30 has entered its detection area, and the power supply device 10 stops wirelessly powering the electronic device 20. Accordingly, the electronic device 20 loses power. After the power supply device 10 stops wirelessly powering the electronic device 20, the power supply device 10 starts to transmit a carrier frequency signal to the device 30.

[0064] Figure 2 It is a schematic diagram of the time domain waveform in the PICC detection process. First, the power supply device 10 transmits a carrier frequency of f to the device 30. NFC Then, the power supply device 10 transmits a carrier frequency of f to the device 30. NFC Request (REQ) signal. Exemplarily, the start signal is used to power the device 30, and the start signal lasts for at least 5.1 milliseconds, so that the device 30 stores enough power to communicate with the power supply device 10. The request signal generally lasts for 0.5 milliseconds. NFC Finally, the power supply device 10 receives the answer to request (ATQ) signal sent by the device 30, and the power supply device 10 confirms that the device 30 is a PICC device. At this point, the power supply device 10 ends the PICC detection. Subsequently, data can be transmitted between the power supply device 10 and the device 30.

[0065] As described above, after the power supply device 10 discovers that the device 30 has entered its detection area, it will stop wirelessly powering the electronic device 20. This causes the electronic device 20 that was originally receiving power to lose power or be disconnected from charging, which seriously affects the efficiency of wireless power supply and the user's experience.

[0066] It should be noted that in order to prevent the wireless power supply magnetic field from interfering with the request signal and the reply request signal and ensure the accuracy of PICC detection, the power supply device 10 needs to stop wirelessly powering the electronic device 20 during the period of sending the request signal and waiting for the reply request signal. Figure 2As shown, the request signal only lasts for 0.5 milliseconds, and the impact of stopping wireless charging of the electronic device 20 during this period on the wireless power supply efficiency is negligible. However, the duration of the start signal is much longer than the duration of the request signal. If the power supply device 10 stops wirelessly charging the electronic device 20 for a long time, it will affect the wireless power supply efficiency and reduce the user experience.

[0067] In order to solve the above problems, an embodiment of the present application provides a power supply device, which can reduce the impact of PICC devices on wireless power supply efficiency and improve the user experience.

[0068] Figure 3 is a schematic diagram of the structure of a power supply device provided in an embodiment of the present application. The technical solution of the embodiment of the present application can be Figure 3 The power supply device 10 may be the above-mentioned Figure 1 The power supply device 10 shown. Figure 3 As shown, the power supply device 10 may include a wireless power supply module 101, a power supply coil 14 and a detection module 102. The wireless power supply module 101 is connected to the power supply coil 14.

[0069] The wireless power supply module 101 is used to provide a power supply signal to the power supply coil 14. The power supply coil 14 is used to receive the power supply signal provided by the wireless power supply module 101, and use the power supply signal to generate a corresponding wireless power supply magnetic field, thereby powering the electronic device 20. In one embodiment, the wireless power supply module 101 can provide power supply signals of different powers to the power supply coil 14, so that the power supply coil 14 generates wireless power supply magnetic fields of different strengths.

[0070] The detection module 102 is used to detect whether there is a target device in the detection area of ​​the power supply device 10 and whether the target device is a PICC device, and output corresponding detection information. The target device is a device other than the power supply device 10 and the electronic device 20 receiving power. In the embodiment of the present application, the target device may be a PICC device or not. For example, the target device may be Figure 1 Device 30 in.

[0071] In one embodiment, in response to the presence of the target device in the detection area of ​​the power supply device 10 , the detection module 102 outputs detection information indicating that the target device exists in the detection area of ​​the power supply device 10 .

[0072] In one embodiment, in response to the absence of the target device in the detection area of ​​the power supply device 10 , the detection module 102 outputs detection information indicating that the target device does not exist in the detection area of ​​the power supply device 10 .

[0073] In one embodiment, in response to the target device in the detection area being a PICC device, the detection module 102 outputs detection information indicating that the target device is a PICC device.

[0074] In one embodiment, in response to the target device in the detection area not being a PICC device, the detection module 102 outputs detection information indicating that the target device is not a PICC device.

[0075] In an embodiment of the present application, the operating modes of the power supply device 10 may include a power supply mode, a PICC detection mode, and a PICC protection mode. In one embodiment, when the power supply device 10 operates in the power supply mode, the PICC detection mode, and the PICC protection mode, respectively, the wireless power supply module 101 may provide power supply signals of different powers to the power supply coil 14, respectively. Exemplarily, when the power supply device 10 operates in the power supply mode, the PICC detection mode, and the PICC protection mode, respectively, the wireless power supply module 101 may provide power supply signals of decreasing power to the power supply coil 14. It should be noted that, as mentioned above Figure 2 As described above, there is no data transmission between the power supply device 10 and the device 30 during the sending of the start signal, so the influence of the wireless power supply magnetic field on the start signal can be ignored, and the wireless power supply magnetic field can even be used directly to replace the start signal to power the device 30. In this way, when the power supply device 10 provided in the embodiment of the present application operates in the PICC detection mode, the wireless power supply module 101 of the power supply device 10 can still provide a power supply signal to the power supply coil 14, thereby generating a wireless power supply magnetic field to power the electronic device 20 and the device 30.

[0076] In the embodiment of the present application, the power supply device 10 can switch between different operation modes based on the detection information output by the detection module 102. In one implementation, in response to the detection information output by the detection module 102, the power supply device 10 can operate in the power supply mode, the PICC detection mode, or the PICC protection mode.

[0077] In one implementation, the power supply device 10 operates in the power supply mode. In response to the detection information output by the detection module 102, the operation mode of the power supply device 10 can be switched from the power supply mode to the PICC detection mode or the PICC protection mode.

[0078] In one embodiment, the power supply device 10 operates in the power supply mode, and in response to the detection information output by the detection module 102, the operation mode of the power supply device 10 can be switched from the power supply mode to the PICC detection mode, or the power supply mode can be maintained. In one embodiment, the power supply device 10 operates in the PICC detection mode, and in response to the detection information output by the detection module 102, the operation mode of the power supply device 10 can be switched from the PICC detection mode to the PICC protection mode or the power supply mode.

[0079] In one embodiment, the detection information output by the detection module 102 can be used to indicate whether there is a target device other than the power supply device 10 and the electronic device 20 in the detection area of ​​the power supply device 10. In response to the detection information output by the detection module 102, the power supply device 10 can operate in a power supply mode or a PICC detection mode.

[0080] In one embodiment, in response to the presence of a target device in the detection area of ​​the power supply device 10 , the detection module 102 outputs detection information to instruct the power supply device 10 to operate in the PICC detection mode.

[0081] In one embodiment, in response to the absence of the target device in the detection area of ​​the power supply device 10 , the detection module 102 outputs detection information indicating that the power supply device 10 operates in the power supply mode.

[0082] Exemplarily, the detection module 102 detects that the target device exists in the detection area of ​​the power supply device 10, and in response to the detection information output by the detection module 102, the power supply device 10 operates in the PICC detection mode. Exemplarily, the detection module 102 detects that the target device does not exist in the detection area of ​​the power supply device 10, and in response to the detection information output by the detection module 102, the power supply device 10 operates in the power supply mode.

[0083] In one embodiment, the detection information output by the detection module 102 can also be used to indicate whether there is a PICC device in the detection area of ​​the power supply device 10, that is, to indicate whether the target device entering the detection area is a PICC device. In response to the detection information output by the detection module 102, the power supply device 10 can operate in PICC protection mode, power supply mode or PICC detection mode.

[0084] In one embodiment, in response to the target device in the detection area being a PICC device, the detection information output by the detection module 102 indicates that the power supply device 10 operates in the PICC protection mode.

[0085] In one embodiment, in response to the target device in the detection area not being a PICC device, the detection information output by the detection module 102 indicates that the power supply device 10 operates in the power supply mode.

[0086] Exemplarily, the detection module 102 detects that the target device is a PICC device, and in response to the detection information output by the detection module 102, the power supply device 10 operates in the PICC protection mode. Exemplarily, the detection module 102 detects that the target device is not a PICC device, and in response to the detection information output by the detection module 102, the power supply device 10 operates in the power supply mode. Exemplarily, the detection module 102 does not detect whether the target device is a PICC device, and in response to the detection information output by the detection module 102, the power supply device 10 can maintain the PICC detection mode.

[0087] Combine the following Figure 1 and Figure 3 , the power supply device 10 in the embodiment of the present application is described. The operation modes of the power supply device 10 include a power supply mode, a PICC detection mode and a PICC protection mode.

[0088] The power supply device 10 operates in the power supply mode, and the wireless power supply module 101 of the power supply device 10 provides a power supply signal to the power supply coil 14, so that the power supply coil 14 generates a wireless power supply magnetic field to supply power to the electronic device 20. Exemplarily, the power supply device 10 operates in the power supply mode, and the wireless power supply module 101 can provide a power supply signal of a first power to the power supply coil 14.

[0089] like Figure 1 As shown, the device 30 enters the detection area of ​​the power supply device 10. After the detection module 102 of the power supply device 10 detects that the device 30 has entered the detection area, the power supply device 10 switches to the PICC detection mode. When the power supply device 10 operates in the PICC detection mode, the power of the power supply signal provided by the wireless power supply module 101 to the power supply coil 14 can remain unchanged or be appropriately reduced, so that the power supply coil 14 continues to generate a wireless power supply magnetic field to supply power to the electronic device 20 and the device 30. Exemplarily, the power supply device 10 operates in the PICC detection mode, and the wireless power supply module 101 can provide a power supply signal of a second power to the power supply coil 14, and the above-mentioned first power can be greater than the second power.

[0090] When the power supply device 10 operates in the PICC detection mode, the detection module 102 can detect whether the device 30 is a PICC device and output corresponding detection information. Figure 4 FIG. 1 is a schematic diagram of a time domain waveform during a PICC detection process provided by an embodiment of the present application. Figure 4 As shown, the wireless power supply module 101 of the power supply device 10 can provide a power supply signal of the second power to the power supply coil 14, so that the power supply coil 14 generates a wireless power supply magnetic field to supply power to the electronic device 20 and the device 30. Figure 4 As shown, the carrier frequency of the power supply signal can be f WPTThen, the wireless power supply module 101 of the power supply device 10 is turned off, and the detection module 102 can detect whether the device 30 is a PICC device by transmitting a request signal once or multiple times, and output corresponding detection information.

[0091] If the detection information output by the detection module 102 indicates that the device 30 does belong to a PICC device, the power supply device 10 switches to the PICC protection mode. When the power supply device 10 operates in the PICC protection mode, the wireless power supply module 101 can provide a power supply signal of extremely low power to the power supply coil 14, and even the power supply device 10 can directly turn off the wireless power supply module 101 until the PICC leaves the detection area, thereby effectively preventing the PICC from being damaged, extending the service life of the PICC device, and ensuring the user's experience and property safety. Exemplarily, when the power supply device 10 operates in the PICC protection mode, the wireless power supply module 101 can provide a power supply signal of a third power to the power supply coil 14, and the second power can be greater than the third power. Exemplarily, the third power can be 0, which is equivalent to directly turning off the wireless power supply module 101. Correspondingly, if the detection information output by the detection module 102 indicates that the device 30 does not belong to a PICC device, the power supply device 10 can switch back to the power supply mode. If the detection information output by the detection module 102 indicates that it is impossible to determine whether the device 30 belongs to a PICC device, the power supply device 10 can maintain the PICC detection mode.

[0092] As described above, the power of the power supply signal provided by the wireless power supply module 101 in the power supply mode can be relatively large to achieve efficient power supply to the electronic device 20. The power of the power supply signal provided by the wireless power supply module 101 in the PICC detection mode can be equal to or less than the power of the power supply signal provided in the power supply mode to ensure continuous power supply to the electronic device 20 and to prevent damage to possible PICC devices as much as possible. The power of the power supply signal provided by the wireless power supply module 101 in the PICC protection mode can be extremely small or even 0 to prevent damage to the PICC device.

[0093] For example, the electronic device 20 is Figure 1The smartphone shown, or Bluetooth headset, tablet computer and desktop computer, etc., the power supply scenario is generally an indoor scenario, and the power supply device 10 can generally be installed in a living room, bedroom, classroom, shopping mall, library, cafeteria, bank, operating room or ward. Exemplarily, the power supply scenario is a library, and the device 30 can be a PICC device such as a student ID card or a library debit card. Exemplarily, the power supply scenario is a cafeteria, and the device 30 can be a PICC device such as a meal card. Exemplarily, the power supply scenario is a hospital, and the device 30 can be a PICC device such as a medical insurance card or an ID card. Exemplarily, the power supply scenario is a bank, and the device 30 can be a PICC device such as a bank card or an ID card, etc., which will not be repeated here.

[0094] For example, the electronic device 20 is an electric car, and the power supply scene can generally be a private garage or a public parking lot, etc. For example, the power supply scene is a private garage or an underground public parking lot, and the device 30 can be a PICC device such as a vehicle unlocking card or a bus card.

[0095] In summary, the power supply device 10 provided in the embodiment of the present application includes multiple operating modes, and the power supply device 10 can provide power supply signals of different powers in different operating modes. In this way, the power supply device 10 can still continue to wirelessly power the current electronic device 20 during PICC detection, avoiding the situation where the electronic device 20 loses power or is disconnected. In this way, the embodiment of the present application can ensure the efficiency of wireless power supply while ensuring the efficiency of PICC detection to prevent the PICC device from being damaged, thereby meeting the user's usage needs to a great extent.

[0096] Figure 5 is a schematic diagram of the structure of another power supply device provided in an embodiment of the present application. The technical solution of the embodiment of the present application can be Figure 5 The power supply device 10 may be the above-mentioned Figure 1 The power supply device 10 shown. Figure 5 As shown, the power supply device 10 may include a wireless power supply module 101, a power supply coil 14, a detection module 102 and a control module 103. The detection module 102 may include a sensor module 1021 and a near field communication module 1022. The functions of the wireless power supply module 101 and the power supply coil 14 may be specifically referred to in the above Figure 3 The description of the corresponding embodiments will not be repeated here.

[0097] like Figure 5As shown, the wireless power supply module 101 can be connected to the power supply coil 14 of the power supply device 10, and the control module 103 can be respectively connected to the wireless power supply module 101, the sensor module 1021 and the near field communication module 1022. In one embodiment, the near field communication module 1022 can be connected to the NFC coil.

[0098] The sensor module 1021 is used to detect whether there is a target device other than the power supply device 10 and the electronic device 20 in the detection area of ​​the power supply device 10, and output a corresponding sensor detection signal to the control module 103, that is, output the detection result of the sensor module 1021 to the control module 103. Exemplarily, the sensor module 1021 may specifically include one or more capacitive sensors, which can efficiently and accurately detect whether a target device enters the detection area based on the change of the dielectric constant in the detection area.

[0099] In one implementation, in response to the presence of the target device in the detection area of ​​the power supply device 10 , the sensor detection signal output by the sensor module 1021 indicates that the target device exists in the detection area of ​​the power supply device 10 .

[0100] In one implementation, in response to the absence of the target device in the detection area of ​​the power supply device 10 , the sensor detection signal output by the sensor module 1021 indicates that the target device does not exist in the detection area of ​​the power supply device 10 .

[0101] The near field communication module 1022 is used to detect whether the target device entering the detection area is a PICC device, and output a corresponding near field communication module detection signal to the control module 103, that is, output the detection result of the near field communication module 1022 to the control module 103. Exemplarily, the near field communication module 1022 can send a request signal and wait for the target device to send a corresponding request reply signal. If the near field communication module 1022 receives the reply request signal sent by the target device, it can be determined that the target device is a PICC device.

[0102] In one implementation, in response to the target device in the detection area being a PICC device, the near field communication module detection signal output by the near field communication module 1022 indicates that the target device is a PICC device.

[0103] In one implementation, in response to the target device in the detection area not being a PICC device, the near field communication module 1022 outputs a near field communication module detection signal indicating that the target device is not a PICC device.

[0104] The control module 103 is used to control the power of the power signal provided by the wireless power supply module 101. In one embodiment, in response to the detection information output by the detection module 102, the control module 103 controls the power of the power signal provided by the wireless power supply module 101. In one embodiment, in response to the detection result output by the sensor module 1021 in the detection module 102, the control module 103 controls the power of the power signal provided by the wireless power supply module 101. In one embodiment, in response to the detection result output by the sensor module 1021 in the detection module 102, the control module 103 controls the power of the power signal provided by the wireless power supply module 101.

[0105] In an embodiment of the present application, the operating modes of the power supply device 10 may include a power supply mode, a PICC detection mode, and a PICC protection mode. In one embodiment, when the power supply device 10 operates in the power supply mode, the PICC detection mode, and the PICC protection mode, respectively, the wireless power supply module 101 may provide power supply signals of different powers to the power supply coil 14, respectively. In one embodiment, when the power supply device 10 operates in the power supply mode, the PICC detection mode, and the PICC protection mode, respectively, the wireless power supply module 101 may provide power supply signals with decreasing powers to the power supply coil 14.

[0106] In the embodiment of the present application, the power supply device 10 can switch between different operation modes based on the detection information output by the detection module 102. In one implementation, in response to the detection information output by the detection module 102, the power supply device 10 can operate in the power supply mode, the PICC detection mode, or the PICC protection mode.

[0107] In one implementation, the detection information output by the detection module 102 may include a sensor detection signal output by the sensor module 1021 , that is, includes a detection result of the sensor module 1021 .

[0108] In one implementation, in response to the detection result of the sensor module 1021 , the detection module 102 outputs detection information to instruct the power supply device 10 to operate in the PICC detection mode or the power supply mode.

[0109] In one embodiment, in response to the detection result output by the sensor module 1021, the control module 103 controls the wireless power supply module 101 to provide a power supply signal of a first power to the power supply coil 14, and the power supply device 10 operates in the power supply mode. In one embodiment, in response to the detection result output by the sensor module 1021, the control module 103 controls the wireless power supply module 101 to provide a power supply signal of a second power to the power supply coil 14, and the power supply device 10 operates in the PICC detection mode. The first power may be greater than or equal to the second power.

[0110] Exemplarily, the sensor module 1021 detects that there are target devices other than the power supply device 10 and the electronic device 20 in the detection area. In response to the detection result output by the sensor module 1021, the control module 103 controls the wireless power supply module 101 to provide a second power power supply signal to the power supply coil 14. At this time, the power supply device 10 operates in the PICC detection mode.

[0111] Exemplarily, the sensor module 1021 detects that there is no target device other than the power supply device 10 and the electronic device 20 in the detection area. In response to the detection result output by the sensor module 1021, the control module 103 controls the wireless power supply module 101 to provide a power supply signal of a first power to the power supply coil 14. At this time, the power supply device 10 operates in the power supply mode.

[0112] In one implementation, the detection information output by the detection module 102 may include a near field communication module detection signal output by the near field communication module 1022 , that is, includes a detection result of the near field communication module 1022 .

[0113] In one implementation, in response to the detection result output by the near field communication module 1022 , the detection module 102 outputs detection information indicating that the power supply device 10 operates in the PICC protection mode or the power supply mode.

[0114] In one embodiment, in response to the detection result output by the near-field communication module 1022, the control module 103 controls the wireless power supply module 101 to provide a power supply signal of a third power to the power supply coil 14, and the power supply device 10 operates in the PICC protection mode. In one embodiment, in response to the detection result output by the near-field communication module 1022, the wireless power supply module 101 is controlled to provide a power supply signal of a first power to the power supply coil 14, and the power supply device 10 operates in the power supply mode. In one embodiment, in response to the detection result output by the near-field communication module 1022, the control module 103 controls the wireless power supply module 101 to provide a power supply signal of a second power to the power supply coil 14, and the power supply device 10 operates in the PICC detection mode. Among them, the third power can be greater than or equal to 0, and less than the second power. Exemplarily, the third power is 0, which is equivalent to the wireless power supply module 101 not providing a power supply signal to the power supply coil, that is, equivalent to turning off the wireless power supply module 101.

[0115] Exemplarily, the near-field communication module 1022 detects that the target device is a PICC device. In response to the detection result output by the near-field communication module 1022, the control module 103 controls the wireless power supply module 101 to provide a power supply signal of a third power to the power supply coil. At this time, the power supply device 10 operates in the PICC protection mode.

[0116] Exemplarily, the near-field communication module 1022 detects that the target device is not a PICC device. In response to the detection result output by the near-field communication module 1022, the control module 103 controls the wireless power supply module 101 to provide a power supply signal of a first power to the power supply coil. At this time, the power supply device 10 operates in the power supply mode.

[0117] Exemplarily, the near-field communication module 1022 fails to detect whether the target device is a PICC device. In response to the detection result output by the near-field communication module 1022, the control module 103 controls the wireless power supply module 101 to provide a power supply signal of a second power to the power supply coil. At this time, the power supply device 10 operates in the PICC detection mode.

[0118] Combine the following Figure 1 and Figure 5 , the power supply device 10 in the embodiment of the present application is described. The operation modes of the power supply device 10 include a power supply mode, a PICC detection mode and a PICC protection mode.

[0119] The power supply device 10 operates in the power supply mode, at which time the control module 103 of the power supply device 10 controls the wireless power supply module 101 to provide a power supply signal of the first power to the power supply coil 14, so that the power supply coil 14 generates a corresponding wireless power supply magnetic field to supply power to the electronic device 20. In addition, after the power supply device 10 is turned on, the sensor module 1021 therein can be in operation all the time to monitor in real time whether there is any device entering the detection area.

[0120] like Figure 1 As shown, the device 30 enters the detection area of ​​the power supply device 10. The sensor module 1021 of the power supply device 10 detects that the device 30 has entered the detection area. In response to the detection result output by the sensor module 1021, the control module 103 can control the wireless power supply module 101 to output a power supply signal of the first power to the power supply coil 14, so that the power supply coil 14 generates a corresponding wireless power supply magnetic field to supply power to the electronic device 20 and the device 30. Subsequently, the control module 103 can also control the near field communication module 1022 to detect whether the device 30 belongs to a PICC device. At this time, the power supply device 10 operates in the PICC detection mode. Exemplarily, the device 30 does not enter the detection area of ​​the power supply device 10. In response to the detection result output by the sensor module 1021, the control module 103 can control the wireless power supply module 101 to maintain the output of the first power power supply signal to the power supply coil 14. At this time, the power supply device 10 operates in the power supply mode.

[0121] When the power supply device 10 operates in the PICC detection mode, for example, Figure 4 As shown, the control module 103 can control the wireless power supply module 101 to output a power supply signal of the second power to the power supply coil 14. The carrier frequency of the power supply signal can be fWPT Please also refer to Figure 2 and Figure 4 The power supply device 10 provided in the embodiment of the present application can still provide a wireless power supply signal during the PICC detection period. The amplitude of the power supply signal is much larger than the amplitude of the NFC signal, which can ensure that the electronic device 20 that is originally receiving power will not lose power during the PICC detection, greatly reducing the impact of the PICC detection on the wireless power supply, thereby ensuring the efficiency of the wireless power supply. Figure 4 As shown, the control module 103 can control the wireless power supply module 101 to be turned off, and turn on the near field communication module 1022, and control the near field communication module 1022 to transmit one or more request signals through the NFC coil to detect whether the device 30 is a PICC device.

[0122] Exemplarily, the near field communication module 1022 detects that the device 30 is indeed a PICC device. In response to the detection result output by the near field communication module 1022, the control module 103 can control the wireless power supply module 101 to output a power supply signal of the third power to the power supply coil 14. At this time, the power supply device 10 operates in the PICC protection mode to prevent the PICC from being damaged. Exemplarily, if the near field communication module 1022 receives a reply request signal sent by the device 30, it can be determined that the device 30 is a PICC device.

[0123] Exemplarily, the near field communication module 1022 detects that the device 30 is not a PICC device. In response to the detection result output by the near field communication module 1022, the control module 103 can control the wireless power supply module 101 to output a power supply signal of the first power to the power supply coil 14, and the power supply device 10 is running in the power supply mode. Exemplarily, if the near field communication module 1022 does not receive a reply request signal sent by the device 30 within a preset time, it can be determined that the device 30 is not a PICC device.

[0124] Exemplarily, when the near field communication module 1022 fails to detect whether the device 30 is a PICC device, in response to the detection result output by the near field communication module 1022, the control module 103 can control the wireless power supply module 101 to continuously output a power supply signal of the second power to the power supply coil 14, and the power supply device 10 maintains the PICC detection mode. Exemplarily, if the near field communication module 1022 does not receive a reply request signal sent by the device 30 after sending the request signal for the first time, the control module 103 can control the near field communication module 1022 to send a request signal again to detect again whether the device 30 is a PICC device.

[0125] In summary, the power supply device 10 in the embodiment of the present application can detect nearby PICC devices in real time through sensors and near-field communication modules, and switch different operating modes based on the detection results. In addition, the power supply device 10 can provide power supply signals of different powers in different operating modes, flexibly meeting the power supply requirements in different operating modes, avoiding the disconnection of the electronic device 20 during PICC detection, ensuring the efficiency of wireless power supply, and preventing the PICC device from being damaged, thus greatly ensuring the user experience.

[0126] Figure 6 is a structural diagram of another power supply device provided in an embodiment of the present application. The technical solution of the embodiment of the present application can be Figure 6 The power supply device 10 may be the above-mentioned Figure 1 The power supply device 10 shown. Figure 6 As shown, the power supply device 10 may include a wireless power supply module 101, a sensor module 1021, a near field communication module 1022 and a control module 103. Figure 6 As shown, the wireless power supply module 101 may specifically include a signal generator 11, a power amplifier 12, and a front-end circuit 13 connected in sequence, wherein the front-end circuit 13 may be connected to the power supply coil 14. The near field communication module 1022 may specifically include a card reader chip 21 and a front-end circuit 22 connected in sequence, wherein the front-end circuit 22 may be connected to the NFC coil 23.

[0127] The signal generator 11 of the wireless power supply module 101 is used to generate a power supply signal. Exemplarily, the signal generator 11 can be implemented by a crystal oscillator, a microcontroller, a digital signal processor, etc. Among them, the power amplifier 12 of the wireless power supply module 101 can be used to amplify the power supply signal generated by the signal generator 11. Exemplarily, the front-end circuit 13 of the wireless power supply module 101 can include a matching network and a filtering network. Among them, the matching network can be used to match the input impedance to the desired input impedance range of the power amplifier 12, and the filtering network can be used to filter out the harmonics of the wireless power supply signal, etc., which will not be described in detail here.

[0128] The card reader chip 21 of the near field communication module 1022 can be used to send and read NFC signals. Exemplarily, the card reader chip 21 can be used to send request signals and reply request signals sent by the reading device 30. Exemplarily, the card reader chip 21 can be implemented by an integrated chip. Exemplarily, the front-end circuit 22 of the near field communication module 1022 can include a matching network and a filtering network. Among them, the matching network can be used to match the input impedance to the input impedance range expected by the card reader chip 21, and the filtering network can be used to filter out undesirable high-order harmonics in the NFC signal.

[0129] The power supply coil 14 is used to receive the power supply signal output by the front-end circuit 13 and generate a corresponding wireless power supply magnetic field to achieve wireless power supply.

[0130] The NFC coil 23 is used to receive the NFC signal output by the front-end circuit 22 and generate a corresponding NFC magnetic field to achieve data communication. The NFC coil 23 can also be used to receive the NFC signal sent by the device 30 and transmit the signal to the card reader chip to achieve data communication.

[0131] like Figure 6 As shown, the control module 103 is connected to the wireless power supply module 101, the sensor module 1021 and the near field communication module 1022 respectively. Exemplarily, the control module 103 can be implemented by a microcontroller, a digital signal processor, etc. As described above, the control module 103 is mainly used to control the opening and closing of the wireless power supply module 101 and the near field communication module 1022, and to control the power of the power supply signal output by the wireless power supply module 101. In one embodiment, the control module 103 can also control the impedance detection of the wireless power supply module 101 and the near field communication module 1022, and so on.

[0132] It should be understood that the structure illustrated in the embodiment of the present application does not constitute a specific limitation on the power supply device 10. In some possible embodiments, the power supply device 10 may have Figure 3 , Figure 5 and Figure 6 More or fewer components shown in, or combining certain components, or splitting certain components, or different component arrangements. The various components shown in the figure can be implemented in hardware, software, or a combination of hardware and software including one or more signal processing and / or application-specific integrated circuits. In addition, the interface connection relationship between the modules illustrated in the embodiments of the present application is only a schematic illustration and does not constitute a structural limitation on the power supply device 10. In some possible embodiments, the power supply device 10 may also adopt different interface connection methods in the above-mentioned embodiments, or a combination of multiple interface connection methods.

[0133] See also Figure 7 , Figure 7 Schematic diagram of a wireless power supply and PICC detection method provided in an embodiment of the present application. The method can be applied to the above Figure 1 The application scenarios described above, and specifically applicable to the above Figure 3 , Figure 5 , Figure 6 In the power supply device 10. The wireless power supply and PICC detection method provided by the present application will be described in detail below, taking the power supply device 10 as an example. Figure 7 As shown, the wireless power supply and PICC detection method may include the following steps S11 to S15.

[0134] Step S11, the power supply device operates in the power supply mode.

[0135] Specifically, the power supply device 10 operates in the power supply mode. At this time, the wireless power supply module 101 of the power supply device 10 provides a power supply signal of a certain power to the power supply coil, so that the power supply coil generates a wireless power supply magnetic field to power the electronic device 20.

[0136] In one implementation, the power supply device 10 operates in a power supply mode, and the wireless power supply module 101 can provide a power supply signal of a first power to the power supply coil to achieve efficient power supply to one or more electronic devices 20 .

[0137] For example, Figure 6 As shown, the power supply device 10 operates in the power supply mode, and the control module 103 controls the signal generator 11 in the wireless power supply module 101 to generate a power supply signal and output it to the power amplifier 12. The power of the power supply signal output after passing through the power amplifier 12 can be the above-mentioned first power. Then, the first power power supply signal is output to the power supply coil 14 after input impedance matching and filtering of the front-end circuit 13 in the wireless power supply module 101, so that the power supply coil 14 generates a corresponding wireless power supply magnetic field.

[0138] Exemplarily, the power supply device 10 can be operated in the power supply mode by default after startup. Exemplarily, the power supply device 10 can be in the standby state by default after startup, and when the power supply device 10 senses that there is an electronic device 20 on its charging base, or the power supply device 10 is matched to the electronic device 20 via Bluetooth, the power supply device 10 can be operated in the power supply mode, and so on.

[0139] Step S12, detecting whether a target device enters the detection area.

[0140] Specifically, it is detected whether a target device enters the detection area, and in response to the detection information output by the detection module 102, the power supply device 10 operates in the PICC detection mode or the power supply mode.

[0141] In one embodiment, the power supply device 10 operates in the PICC detection mode or the power supply mode in response to the detection result output by the sensor module 1021 in the detection module 102. The detection result is used to indicate whether a target device enters the detection area of ​​the power supply device 10.

[0142] Exemplarily, the sensor module 1021 detects that a target device has entered the detection area, and in response to the detection result output by the sensor module 1021, the power supply device 10 operates in the PICC detection mode. Exemplarily, the sensor module 1021 detects that no target device has entered the detection area, and in response to the detection result output by the sensor module 1021, the power supply device 10 operates in the power supply mode. Exemplarily, the sensor module 1021 does not detect whether a target device has entered the detection area, and in response to the detection result output by the sensor module 1021, the power supply device 10 can operate in the power supply mode.

[0143] Exemplarily, the sensor module 1021 may include one or more capacitive sensors, which can efficiently and conveniently detect whether a device enters the detection area based on the change of the dielectric constant in the detection area.

[0144] Step S13: It is detected that a target device enters the detection area, and the power supply device operates in a PICC detection mode.

[0145] Specifically, the detection module 102 detects that a target device enters the detection area, and in response to the detection information output by the detection module 102, the power supply device operates in the PICC detection mode.

[0146] In one implementation, the sensor module 1021 in the detection module 102 detects that a target device has entered the detection area, and in response to the detection result output by the sensor module 1021 , the power supply device 10 operates in the PICC detection mode.

[0147] Exemplarily, the sensor module 1021 in the detection module 102 detects that a target device has entered the detection area. In response to the detection result output by the sensor module 1021, the control module 103 can control the wireless power supply module 101 to output a power supply signal of the second power to the power supply coil 14, and the control module 103 can also control the near field communication module 1022 to detect whether the target device is a PICC device. At this time, the power supply device 10 operates in the PICC detection mode. In one embodiment, the target device is the above-mentioned Figure 1 Device 30 in.

[0148] For example, Figure 6As shown, the power supply device 10 operates in the PICC detection mode, and the control module 103 controls the signal generator 11 in the wireless power supply module 101 to generate a power supply signal and output it to the power amplifier 12. The power of the power supply signal output after passing through the power amplifier 12 can be the above-mentioned second power. Then, the second power power supply signal is output to the power supply coil 14 after input impedance matching and filtering of the front-end circuit 13 in the wireless power supply module 101, so that the power supply coil 14 generates a corresponding wireless power supply magnetic field. Among them, the second power can be less than or equal to the first power.

[0149] For example, Figure 8 Schematic diagram of power variation of a power supply signal provided in an embodiment of the present application. Figure 8 As shown, the power supply device is originally operating in the power supply mode, and the wireless power supply module 101 outputs a power supply signal of the first power to the power supply coil 14. The detection module 102 detects that a target device has entered the detection area. In response to the detection result output by the detection module 102, the power supply device 10 immediately switches to the PICC detection mode, and the wireless power supply module 101 outputs a power supply signal of the second power to the power supply coil 14. Figure 8 As shown, the power supply device 10 switches from the power supply mode to the PICC detection mode, and the power of the power supply signal provided by the wireless power supply module 101 can be reduced according to a preset amplitude.

[0150] Step S14, detecting whether the target device is a PICC device.

[0151] Specifically, the power supply device 10 operates in the PICC detection mode, and the detection module 102 detects whether the target device entering the detection area is a PICC device. In response to the detection information output by the detection module 102, the power supply device 10 operates in the PICC protection mode, the power supply mode or the PICC detection mode.

[0152] In one embodiment, the power supply device 10 operates in PICC protection mode, power supply mode or PICC detection mode in response to the detection result output by the near field communication module 1022 in the detection module 102. The detection result is used to indicate whether the target device entering the detection area is a PICC device.

[0153] Exemplarily, the near field communication module 1022 detects that the target device is a PICC device, and in response to the detection result output by the near field communication module 1022, the power supply device 10 operates in the PICC protection mode. Exemplarily, the near field communication module 1022 detects that the target device is not a PICC device, and in response to the detection result output by the near field communication module 1022, the power supply device 10 operates in the power supply mode. Exemplarily, the near field communication module 1022 does not detect whether the target device is a PICC device, and in response to the detection result output by the near field communication module 1022, the power supply device 10 can maintain the PICC detection mode.

[0154] For example, the target device is Figure 1 As an example, the device 30 shown in FIG. Figure 4 As shown, when the power supply device 10 operates in the PICC detection mode, the control module 103 therein can control the wireless power supply module 101 to provide a power supply signal of the second power for a period of 4 milliseconds, 4.3 milliseconds or 5 milliseconds to the power supply coil during the power supply phase of the PICC detection, thereby powering the electronic device 20 and the device 30. Then, the control module 103 turns off the wireless power supply module 101 during the detection phase of the PICC detection, turns on the near field communication module 1022, and controls the near field communication module 1022 to transmit one or more request signals to detect whether the device 30 is a PICC device.

[0155] For example, Figure 6 As shown, the power supply device 10 operates in the PICC detection mode, and the control module 103 controls the card reader chip 21 in the near field communication module 1022 to generate the above request signal, and the request signal is output to the NFC coil 23 after input impedance matching and filtering of the front-end circuit 13 in the near field communication module 1022. The NFC coil 23 generates a corresponding NFC magnetic field based on the request signal, and attempts to communicate data with the device 30 to detect whether the device 30 is a PICC device.

[0156] Exemplarily, if the device 30 is a PICC device, the device 30 can use the power received during the PICC power supply phase to send a corresponding reply request signal. The near field communication module 1022 receives the reply request signal sent by the device 30, and determines that the device 30 is a PICC device. In response to the detection result output by the near field communication module 1022, the control module 103 can control the wireless power supply module 101 to output a third power power supply signal to the power supply coil 14. At this time, the power supply device 10 operates in the PICC protection mode. Fig. 9 FIG. 1 is a schematic diagram of another power supply signal power variation provided in an embodiment of the present application. Fig. 9As shown, when the power supply device 10 operates in the PICC detection mode, the wireless power supply module 101 outputs a power supply signal of the second power to the power supply coil 14. If the near field communication module 1022 detects that the device 30 is a PICC device, the power supply device 10 can switch from the PICC detection mode to the PICC protection mode, and the wireless power supply module 101 outputs a power supply signal of the third power to the power supply coil 14. Fig. 9 As shown, the power supply device 10 switches from the PICC detection mode to the PICC protection mode, and the power of the power supply signal provided by the wireless power supply module 101 can be reduced according to a preset amplitude.

[0157] For example, if the near field communication module 1022 does not receive the reply request signal sent by the device 30 within the preset time, it can be determined that the device 30 does not belong to the PICC device. In response to the detection result output by the near field communication module 1022, the control module 103 can control the wireless power supply module 101 to output the first power power supply signal to the power supply coil 14. At this time, the power supply device 10 operates in the power supply mode. For example, Figure 8 As shown, the power supply device 10 operates in the PICC detection mode, and the wireless power supply module 101 outputs a power supply signal of the second power to the power supply coil 14. If the near field communication module 1022 detects that the device 30 is not a PICC device, the power supply device 10 can switch from the PICC detection mode back to the power supply mode, and the wireless power supply module 101 outputs a power supply signal of the first power to the power supply coil 14.

[0158] Exemplarily, if the near field communication module 1022 does not receive a reply request signal sent by the device 30 after sending the request signal for the first time, that is, if it is not detected whether the device 30 is a PICC device, in response to the detection result output by the near field communication module 1022, the control module 103 can control the wireless power supply module 101 to continuously output a power supply signal of the second power to the power supply coil 14, and the power supply device 10 maintains the PICC detection mode. The control module 103 can control the near field communication module 1022 to send a request signal again to detect whether the device 30 is a PICC again.

[0159] Step S15: It is detected that the target device is a PICC device, and the power supply device operates in a PICC protection mode.

[0160] Specifically, the detection module 102 detects that the target device is a PICC device, and in response to the detection information output by the detection module 102, the power supply device operates in the PICC protection mode.

[0161] In one implementation, the near field communication module 1022 in the detection module 102 detects that the target device is a PICC device, and in response to the detection result output by the near field communication module 1022, the power supply device 10 operates in the PICC protection mode.

[0162] Exemplarily, the near field communication module 1022 in the detection module 102 detects that the target device is a PICC device. In response to the detection result output by the near field communication module 1022, the control module 103 can control the wireless power supply module 101 to output a power supply signal of the third power to the power supply coil 14. At this time, the power supply device 10 operates in the PICC protection mode. Exemplarily, Fig. 9 As shown, the power supply device 10 operates in the PICC detection mode, and the wireless power supply module 101 outputs a power supply signal of the second power to the power supply coil 14. If the near field communication module 1022 detects that the device 30 is a PICC device, the power supply device 10 can switch from the PICC detection mode to the PICC protection mode, and the wireless power supply module 101 outputs a power supply signal of the third power to the power supply coil 14. Fig. 9 As shown, the power supply device 10 switches from the PICC detection mode to the PICC protection mode, and the power of the power supply signal provided by the wireless power supply module 101 can be reduced according to a preset amplitude.

[0163] For example, Figure 6 As shown, the power supply device 10 operates in the PICC protection mode, and the control module 103 controls the signal generator 11 in the wireless power supply module 101 to generate a power supply signal and output it to the power amplifier 12. The power of the power supply signal output after passing through the power amplifier 12 can be the above-mentioned third power. Then, the power supply signal of the third power is output to the power supply coil 14 after input impedance matching and filtering of the front-end circuit 13 in the wireless power supply module 101, so that the power supply coil 14 generates a corresponding wireless power supply magnetic field. Among them, the third power can be greater than or equal to 0, and less than the second power. Exemplarily, the third power is 0, which is equivalent to the wireless power supply module not providing a power supply signal to the power supply coil, that is, equivalent to turning off the wireless power supply module 101. As described above, in the PICC protection mode, the power supply device 10 can weaken or even turn off the wireless power supply to prevent the PICC from being damaged, thereby extending the service life of the PICC device and ensuring the user experience and property safety.

[0164] In one embodiment, Figure 7As shown, when the power supply device 10 operates in the PICC protection mode, the detection module 102 can continue to operate to detect in real time whether there is a target device entering the detection area, so as to promptly discover the PICC devices that may exist nearby. In response to the detection information output by the detection module 102, the power supply device 10 can maintain the previous power supply mode or switch to the PICC detection mode or the PICC protection mode. For example, Fig. 9 As shown, if it is subsequently detected that there is no PICC device in the detection area, the power supply device 10 can switch from the PICC protection mode to the power supply mode, and the wireless power supply module 101 outputs a power supply signal of the first power to the power supply coil 14.

[0165] Fig.10 is a flow chart of another wireless power supply and PICC detection method provided in an embodiment of the present application. This method can be applied to the above Figure 1 The application scenarios described above, and specifically applicable to the above Figure 3 , Figure 5 , Figure 6 In the power supply device 10. The wireless power supply and PICC detection method provided by the present application will be further described in detail below, taking the power supply device 10 as an example. Fig.10 As shown, the method may include the following steps S21-S27.

[0166] Step S21, the power supply device is in a standby state.

[0167] Specifically, the power supply device is in a standby state and does not perform wireless power supply and near field communication.

[0168] In one embodiment, when the power supply device 10 is in a standby state, the wireless power supply module 101 and the near field communication module 1022 in the power supply device 10 can be in a closed state, and the sensor module 1021 in the power supply device 10 can be in an operating state to monitor in real time whether any device enters the detection area of ​​the power supply device 10.

[0169] Exemplarily, after the power supply device 10 is started, it can be in standby mode by default. The power supply device 10 can turn on the wireless power supply module 101 when the user manually turns on the wireless power supply, senses the presence of an electronic device 20 on its charging base, or matches the Bluetooth to a wirelessly chargeable electronic device 20.

[0170] Step S22, detecting whether a target device enters the detection area.

[0171] Specifically, step S22 can refer to the above Figure 7 The step S12 in the corresponding embodiment will not be described in detail here.

[0172] In one implementation, the target device is a device other than the power supply device 10 .

[0173] Step S23: It is detected that a target device enters the detection area, and the power supply device operates in the PICC detection mode.

[0174] Specifically, step S23 can refer to the above Figure 7 The step S13 in the corresponding embodiment will not be described in detail here.

[0175] In one embodiment, the power supply device 10 switches from the standby state to the PICC detection mode, and the control module 103 can also continue to maintain the wireless power supply module 101 closed, and turn on the near field communication module 1022, and control the near field communication module 1022 to transmit an NFC signal for a period of time to power the target device, thereby maximizing the protection of possible PICC devices from damage.

[0176] Step S24, detecting whether the target device is a PICC device.

[0177] Specifically, step S24 can refer to the above Figure 7 The step S14 in the corresponding embodiment will not be described in detail here.

[0178] In one embodiment, the power supply device 10 is originally in a standby state. If it is detected that the target device is not a PICC device, it can further detect whether the target device is an electronic device with a wireless charging function. Figure 1 The electronic device 20 shown is an electronic device with a wireless charging function, such as a mobile phone, a Bluetooth headset, and a tablet computer.

[0179] Step S25: It is detected that the target device is a PICC device, and the power supply device operates in a PICC protection mode.

[0180] Specifically, step S25 can refer to the above Figure 7 The corresponding step S15 in the embodiment will not be described in detail here.

[0181] Step S26, detecting whether the target device is an electronic device with a wireless charging function.

[0182] Specifically, if the detection module 102 detects that the target device is not a PICC device, it may further detect whether the target device is an electronic device with a wireless charging function.

[0183] In one implementation, in response to the detection information output by the detection module 102 , the power supply device 10 maintains a standby state or operates in a power supply mode.

[0184] Exemplarily, the detection module 102 detects that the target device is an electronic device with a wireless charging function, and in response to the detection information output by the detection module 102, the power supply device 10 operates in a power supply mode. In this way, the embodiment of the present application can realize wireless power supply to the electronic device without damaging the PICC. Exemplarily, the detection module 102 detects that the target device is not an electronic device with a wireless charging function, and in response to the detection information output by the detection module 102, the power supply device 10 maintains a standby state to save energy as much as possible.

[0185] Exemplarily, the detection module 102 may also include a Bluetooth communication module, and may detect whether the target device is an electronic device with a wireless charging function through methods such as Bluetooth matching.

[0186] Step S27, detecting that the target device is an electronic device with a wireless charging function, and the power supply device operates in a power supply mode.

[0187] Specifically, the detection module 102 detects that the target device is an electronic device with a wireless charging function, and in response to the detection information output by the detection module 102, the power supply device operates in the power supply mode.

[0188] In one embodiment, the Bluetooth communication module in the detection module 102 detects that the target device is an electronic device with a wireless charging function, and in response to the detection information output by the Bluetooth communication module, the power supply device 10 operates in the power supply mode.

[0189] Exemplarily, the Bluetooth communication module in the detection module 102 detects that the target device is an electronic device with a wireless charging function. In response to the detection information output by the Bluetooth communication module, the control module 103 can control the wireless power supply module 101 to output a power supply signal of a first power to the power supply coil 14. At this time, the power supply device 10 operates in the power supply mode.

[0190] For example, Figure 6 As shown, the power supply device 10 operates in the power supply mode, and the control module 103 controls the signal generator 11 in the wireless power supply module 101 to generate a power supply signal and output it to the power amplifier 12. The power of the power supply signal output after passing through the power amplifier 12 can be the above-mentioned first power. Then, the power supply signal of the first power is output to the power supply coil 14 after input impedance matching and filtering of the front-end circuit 13 in the wireless power supply module 101, so that the power supply coil 14 generates a corresponding wireless power supply magnetic field to achieve efficient power supply to the target device.

[0191] In one embodiment, Fig.10As shown, the power supply device 10 operates in the power supply mode, and the detection module 102 can continue to operate to detect in real time whether there is a target device entering the detection area, so as to promptly discover the PICC devices and electronic devices that may exist nearby. In response to the detection information output by the detection module 102, the power supply device 10 can maintain the current power supply mode or switch to any one of the standby state, PICC detection mode, and PICC protection mode.

[0192] In the embodiment of the present application, the above Figure 7 or Fig.10 The various method flows in the described wireless power supply and PICC detection methods can be implemented based on hardware, or a combination thereof. Among them, the hardware implementation method may include a logic circuit, an algorithm circuit, or an analog circuit, etc. The software implementation method may include program instructions, which can be regarded as a software product, stored in a memory, and can be executed by a processor to implement related functions.

[0193] In summary, the embodiments of the present application provide a power supply device for near-field communication supporting wireless power supply, and the power supply device includes multiple operating modes such as power supply mode, PICC detection mode and PICC protection mode. Based on this, the wireless power supply module of the power supply device can provide power supply signals of different powers to the power supply coil in different operating modes, so that the power supply coil generates magnetic fields of different strengths, thereby flexibly meeting the power supply requirements in different situations. In this way, when the power supply device performs PICC detection, it can also continue to generate a wireless power supply magnetic field to continuously wirelessly power the current electronic device, avoiding the situation where the electronic device is disconnected during PICC detection. In summary, the power supply device provided in the embodiments of the present application can ensure the efficiency of PICC detection to prevent the PICC from being damaged while ensuring the efficiency of wireless power supply, which greatly meets the user's usage needs.

[0194] An embodiment of the present application also provides a computer-readable storage medium, wherein the computer-readable storage medium may store a program, and when the program is executed by a processor, the processor can execute part or all of the steps of any one of the above method embodiments.

[0195] An embodiment of the present application also provides a computer program, which includes instructions. When the computer program is executed by a multi-core processor, the processor can execute part or all of the steps of any one of the above method embodiments.

[0196] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0197] It should be noted that, for the above-mentioned method embodiments, for the sake of simplicity, they are all expressed as a series of action combinations, but those skilled in the art should be aware that the present application is not limited by the order of the actions described, because according to the present application, some steps may be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present application.

[0198] In the several embodiments provided in the present application, it should be understood that the disclosed device can be implemented in other ways. For example, the device embodiments described above are only schematic, such as the division of the above-mentioned units, which is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, and the indirect coupling or communication connection of devices or units can be electrical or other forms.

[0199] The units described above as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0200] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0201] If the above-mentioned integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, a server or a network device, etc., specifically a processor in a computer device) to perform all or part of the steps of the above-mentioned methods of each embodiment of the present application. Among them, the aforementioned storage medium may include: U disk, mobile hard disk, magnetic disk, optical disk, read-only memory (Read-Only Memory, abbreviated: ROM) or random access memory (Random Access Memory, abbreviated: RAM) and other media that can store program codes.

[0202] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A power supply device supporting wireless power supply and near field communication, characterized in that: It includes a wireless power supply module, a power supply coil and a detection module; the wireless power supply module is used to provide a power supply signal to the power supply coil, and the power supply coil uses the power supply signal to power the electronic device; the detection module is used to detect whether there is a target device in the detection area of ​​the power supply device and detect whether the target device belongs to a neighboring integrated circuit card PICC device; the operation mode of the power supply device includes a power supply mode, a PICC detection mode and a PICC protection mode; When the power supply device operates in the power supply mode, in response to the detection information output by the detection module, the operation mode of the power supply device is switched from the power supply mode to the PICC detection mode or the PICC protection mode; the detection information includes at least one of a sensor detection signal and a near field communication module detection signal; When the power supply device operates in the power supply mode, the PICC detection mode and the PICC protection mode respectively, the power of the power supply signal provided by the wireless power supply module to the power supply coil decreases in sequence; Wherein, the target device is a device other than the power supply device and the electronic device; The detection module comprises: A sensor module, used to detect whether the target device other than the power supply device and the electronic device exists in the detection area, and output a sensor detection signal; wherein, in response to the existence of the target device in the detection area, the detection module outputs the detection information indicating that the power supply device operates in the PICC detection mode; or, in response to the absence of the target device in the detection area, the detection module outputs the detection information indicating that the power supply device operates in the power supply mode; A near field communication module is used to detect whether the target device in the detection area belongs to a PICC device, and output a near field communication module detection signal; wherein, in response to the target device belonging to a PICC device, the detection module outputs the detection information to indicate that the power supply device operates in the PICC protection mode; or, in response to the target device not belonging to a PICC device, the detection module outputs the detection information to indicate that the power supply device operates in the power supply mode; or, in response to the near field communication module not detecting whether the target device belongs to a PICC device, the detection module outputs the detection information to indicate that the power supply device maintains the PICC detection mode.

2. The power supply device according to claim 1, characterized in that: In response to the power supply device operating in the power supply mode, the wireless power supply module provides the power supply signal of the first power to the power supply coil; In response to the power supply device operating in the PICC detection mode, the wireless power supply module provides the power supply signal of the second power to the power supply coil; In response to the power supply device operating in the PICC protection mode, the wireless power supply module provides the power supply signal of the third power to the power supply coil; The first power is greater than the second power, and the second power is greater than the third power.

3. The power supply device according to claim 2, characterized in that: The power supply device also includes: A control module is used to control the power supply device to operate in the power supply mode, the PICC detection mode or the PICC protection mode in response to the detection information output by the detection module.

4. The power supply device according to claim 3, characterized in that: The control module is used for: In response to the detection information including the sensor detection signal, the control module controls the power supply device to operate in the PICC detection mode or the power supply mode; In response to the detection information including the near field communication module detection signal, the control module controls the power supply device to operate in the PICC protection mode or the power supply mode.

5. The power supply device according to claim 3, characterized in that: The control module is used for: In response to the detection information including the sensor detection signal, the control module controls the wireless power supply module to provide the power supply signal of the first power or the second power to the power supply coil; In response to the detection information including the near field communication module detection signal, the control module controls the wireless power supply module to provide the power supply signal of the first power or the third power to the power supply coil.

6. A power supply device supporting wireless power supply and near field communication, characterized in that: It includes a wireless power supply module, a power supply coil, a detection module and a control module, wherein: The wireless power supply module is used to provide a power supply signal to the power supply coil, and the power supply coil uses the power supply signal to power the electronic device; The detection module is used to detect whether there is a target device in the detection area of ​​the power supply device and detect whether the target device is a PICC device; The control module is used for: Controlling the wireless power supply module to provide the power supply signal of the first power to the power supply coil; and In response to the detection information output by the detection module, controlling the wireless power supply module to provide the power supply signal of the second power or the third power to the power supply coil; the detection information includes at least one of a sensor detection signal and a near field communication module detection signal; The target device is a device other than the power supply device and the electronic device, the first power is greater than the second power, and the second power is greater than the third power; The detection module includes a sensor module and a near field communication module, wherein: The sensor module is used to detect whether the target device exists in the detection area; and The near field communication module is used to detect whether the target device in the detection area is a PICC device; If the target device does not exist in the detection area, in response to the detection result output by the sensor module, the control module is specifically used to control the wireless power supply module to output the first power power supply signal to the power supply coil; or, if the target device exists in the detection area, in response to the detection result output by the sensor module, the control module is specifically used to control the wireless power supply module to output the second power power supply signal to the power supply coil; If the target device is a PICC device, in response to the detection result output by the near-field communication module, the control module is specifically used to control the wireless power supply module to output the third power power supply signal to the power supply coil; or, if the target device is not a PICC device, in response to the detection result output by the near-field communication module, the control module is specifically used to control the wireless power supply module to output the first power power supply signal to the power supply coil, or, if the near-field communication module does not detect whether the target device is a PICC device, in response to the detection result output by the near-field communication module, the control module is specifically used to control the wireless power supply module to output the second power power supply signal to the power supply coil.

Images