Charging circuit and electronic equipment

Abstract

The invention provides a charging circuit and electronic equipment. The charging circuit comprises a wired charging port, a wireless sensing circuit and a first charging main body. And the wired charging port is used for connecting wired charging equipment. The wireless sensing circuit is used for sensing wireless charging equipment and comprises a sensing signal output port. The first charging main body is electrically connected with the wired charging port and is electrically connected with the wireless induction circuit through the induction signal output port; the first charging main body is used for detecting whether the wired charging port is connected with wired charging equipment or not, or detecting whether the wireless sensing circuit senses that the wireless charging equipment exists or not; the first charging main body is used for outputting a wired connection indication signal when detecting that the wired charging port is connected with wired charging equipment; when the wired connection indication signal is received, the wireless induction circuit is in a sleep mode. The cost can be reduced.

Description

Technical Field

[0001] The present application relates to the field of charging technology, and in particular to a charging circuit and electronic equipment. Background Art

[0002] In recent years, the charging mode of electronic devices has achieved rapid development. Electronic devices include multiple functional modules, and their charging architecture includes wired charging module, wireless charging module, wireless reverse charging module, and wired OTG (On-The-Go) module. Some modules are mutually exclusive, and the power supply paths of some modules affect each other. For modules that are mutually exclusive or interfere or affect each other, they need to be isolated from each other, which will increase the isolation and independent power supply units, resulting in increased costs and difficulty in popularization. Summary of the invention

[0003] The present application provides a charging circuit and electronic equipment with low cost.

[0004] The present application provides a charging circuit, comprising:

[0005] Wired charging port, used to connect wired charging devices;

[0006] A wireless induction circuit, used to connect to a wireless charging device, and including an induction signal output port; and

[0007] The first charging body is electrically connected to the wired charging port and is electrically connected to the wireless sensing circuit through the sensing signal output port; the first charging body is used to detect whether the wired charging port is connected to the wired charging device, or the wireless sensing circuit senses whether the wireless charging device is present; the first charging body is used to output a wired connection indication signal when it is detected that the wired charging port is connected to the wired charging device; wherein, when the wired connection indication signal is received, the wireless sensing circuit is in a sleep mode.

[0008] Optionally, the charging circuit also includes a voltage conversion circuit and a charging controller electrically connected to the voltage conversion circuit, the charging controller is electrically connected to the wireless sensing circuit through the voltage conversion circuit, and the charging controller is configured to output the sleep signal upon receiving the connection indication signal, and the sleep signal is transmitted to the wireless sensing circuit after passing through the voltage conversion circuit, so that the wireless sensing circuit is in the sleep mode.

[0009] Optionally, the charging circuit also includes a second charging body and a charging controller, the second charging body is electrically connected to the wireless induction circuit and the charging controller, and the charging controller is used to send a sleep wake-up signal to the second charging body when receiving the wired connection indication signal; the second charging body is used to send the sleep signal to the wireless induction circuit when receiving the sleep wake-up signal, so that the wireless induction circuit is in the sleep mode.

[0010] Optionally, the charging circuit also includes a wired switching circuit, which is electrically connected to the wired charging port; the wired switching circuit is electrically connected to the first charging body, and the first charging body is used to control the wired switching circuit to be turned on after the wireless induction circuit is in sleep mode, so that the wireless charging device is connected to the first charging body.

[0011] Optionally, the charging circuit also includes a second charging body, and the wired switching circuit is electrically connected to the first charging body and the second charging body; the first charging body is used to control the wired switching circuit to be turned on after detecting that the wireless induction circuit is in sleep mode, so that the wired charging device is connected to the second charging body.

[0012] Optionally, the charging circuit also includes a second charging body, which is electrically connected to the induction signal output port, and the first charging body is used to enable the wireless charging device to be connected to the first charging body or the second charging body through the induction signal output port when the wireless induction circuit senses the wireless charging device.

[0013] Optionally, the charging circuit also includes an OTG power supply branch and a charging controller, the OTG power supply branch is used to connect the OTG device, and includes a power supply voltage conversion circuit and a power supply switch circuit, the power supply voltage conversion circuit is electrically connected to the first charging body and the power supply switch circuit, and the power supply switch circuit is electrically connected to the charging controller and the wired charging port; the first charging body is also used to detect whether the wired charging port is connected to the OTG device, and output a power supply indication signal when it is detected that the wired charging port is connected to the OTG device; the charging controller is used to control the power supply switch circuit to be turned on when receiving the power supply indication signal, so that the first charging body is connected to the OTG device.

[0014] Optionally, the charging circuit also includes a voltage conversion circuit, and the charging controller is electrically connected to the power supply switch circuit through the voltage conversion circuit. The charging controller is used to output a control signal when receiving the power supply indication signal. The control signal is transmitted to the power supply switch circuit after passing through the voltage conversion circuit, so that the power supply switch circuit is turned on.

[0015] Optionally, the power supply switch circuit includes a pair of MOS tubes, and the pair of MOS tubes are arranged back to back.

[0016] Optionally, the charging circuit also includes a second charging body; the first charging body is used to send a power wake-up signal to the second charging body when it detects that the wireless sensing circuit senses a wireless device to be charged and detects that the wired charging port is connected to the OTG device; the second charging body is used to connect with the wireless device to be charged when receiving the power wake-up signal.

[0017] Optionally, the second charging entity includes a power management integrated circuit.

[0018] Optionally, the first charging body is used to control the wired switch circuit to be turned on when it is detected that the wired charging port is connected to the wired charging device and the wireless sensing circuit senses a wireless device to be charged, so that the wired charging device is connected to the wireless device to be charged.

[0019] Optionally, the first charging entity includes a charge pump.

[0020] Optionally, the wireless sensing circuit includes a wireless sensing chip.

[0021] Optionally, the wired switching circuit includes a pair of MOS tubes, and the pair of MOS tubes are arranged back to back.

[0022] The present application also provides a charging device, including: a charging circuit as described in any one of the above embodiments.

[0023] The charging circuit and electronic device provided in the embodiments of the present application. The charging circuit is provided with a wired charging port, a wireless sensing circuit and a first charging body, and uses the wired charging port to connect to a wired charging device, uses the wireless sensing circuit to connect to a wireless charging device, and uses the first charging body to detect whether the wired charging port is connected to a wired charging device, or whether the wireless sensing circuit is connected to a wireless charging device, wherein when it is detected that the wired charging port is connected to a wired charging device, a wired connection indication signal is output. When the wired connection indication signal is received, the wireless sensing circuit is in sleep mode. With such a configuration, when it is detected that the wired charging port is connected to a wired charging device, the wireless sensing circuit is controlled to sleep mode, and the wired charging device is preferentially used for charging, so that the wired charging mode is isolated from the wireless charging mode, so that the mutually exclusive modes of wired charging and wireless charging will not be interfered with or affected, thereby reducing the isolation circuit connected to the wireless sensing circuit and reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0025] Figure 1 Shown is a functional block diagram of an embodiment of a charging circuit of the present application.

[0026] Figure 2 shown Figure 1 The circuit diagram of the charging circuit is shown. DETAILED DESCRIPTION

[0027] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0028] The terms used in this application are only for the purpose of describing specific embodiments and are not intended to limit this application. Unless otherwise defined, the technical terms or scientific terms used in this application should be understood by people with ordinary skills in the field to which this application belongs. The words "first", "second" and similar words used in the specification and claims of this application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "one" do not indicate a quantitative limit, but indicate that there is at least one. "Multiple" or "several" means at least two. Unless otherwise specified, words such as "front", "rear", "lower" and / or "upper" are only for the convenience of explanation and are not limited to a position or a spatial orientation. Words such as "include" or "comprise" mean that the elements or objects appearing in front of "include" or "comprise" include the elements or objects listed after "include" or "comprise" and their equivalents, and do not exclude other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, and can include electrical connections, whether direct or indirect.

[0029] The singular forms "a", "said" and "the" used in this specification and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0030] The present application provides a charging circuit and an electronic device. The charging circuit includes a wired charging port, a wireless sensing circuit and a first charging body. The wired charging port is used to connect a wired charging device. The wireless sensing circuit is used to connect a wireless charging device and includes an induction signal output port. The first charging body is electrically connected to the wired charging port and is electrically connected to the wireless sensing circuit through the induction signal output port; the first charging body is used to detect whether the wired charging port is connected to a wired charging device, or the wireless sensing circuit senses whether there is a wireless charging device; when the first charging body detects that the wired charging port is connected to a wired charging device, it outputs a wired connection indication signal. When the wired connection indication signal is received, the wireless sensing circuit is in a sleep mode. In this way, when it is detected that the wired charging port is connected to a wired charging device, the wireless sensing circuit is controlled to a sleep mode, and the wired charging device is used for charging first, so that the wired charging mode is isolated from the wireless charging mode, so that the mutually exclusive modes of wired charging and wireless charging will not be interfered with or affected, thereby reducing the isolation circuit connected to the wireless sensing circuit and reducing costs.

[0031] The charging circuit and the electronic device of the present application are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the features of the following embodiments and implementations can be combined with each other.

[0032] Figure 1 Shown is a principle block diagram of an embodiment of the charging circuit 1 of the present application. Figure 2 shown Figure 1 The circuit diagram of the charging circuit 1 is shown in FIG. Figure 1 and Figure 2 As shown, the charging circuit 1 includes a wired charging port 11, a wired switch circuit 12, a wireless induction circuit 13, a first charging body 14 and a charging controller 15.

[0033] The wired charging port 11 is used to connect the wired charging device 2. In this embodiment, the wired charging device 2 may be a wired charger. The wired charger may be inserted into the wired charging port 11. When the wired charger is inserted into the wired charging port 11, a voltage is input to the wired charging port 11. The wired switch circuit 12 is electrically connected to the wired charging port 11. The wired switch circuit 12 may control the on and off of the wired charging port 11.

[0034] The wireless sensing circuit 13 is used to connect to the wireless charging device 3, and includes a sensing signal output port 131. In this embodiment, the wireless charging device 3 may be a wireless charger. When the wireless charger approaches the wireless sensing circuit 13, the sensing signal output port 131 will output a voltage. In this embodiment, the wireless sensing circuit 13 includes a wireless sensing chip. The wireless sensing chip has high integration and fast response speed.

[0035] The first charging body 14 is electrically connected to the wired switch circuit 12, the wired charging port 11, and the wireless induction circuit 13 through the induction signal output port 131. The first charging body 14 is used to detect whether the wired charging port 11 is connected to the wired charging device 2, or the wireless induction circuit 13 senses whether there is a wireless charging device 3. In this embodiment, when the wired charging device 2 is inserted into the wired charging port 11, there will be voltage input to the wired charging port 11. The first charging body 14 determines that the wired charging port 11 is connected to the wired charging device 2 by detecting whether there is input voltage to the wired charging port 11. In this embodiment, when the wireless charging device 3 is close to the wireless induction circuit 13, there will be an output voltage at the induction signal output port 131. The first charging body 14 determines that the wireless induction circuit is connected to the wireless charging device 3 by detecting whether there is an output voltage at the induction signal output port 131. When the first charging body 14 detects that the wired charging port 11 is connected to the wired charging device 2, it outputs a wired connection indication signal.

[0036] In one embodiment, when receiving a wired connection indication signal, the wireless sensing circuit 13 is in sleep mode. The wired connection indication signal indicates that the wired charging port 11 is connected to the wired charging device 2 at this time. Since wired charging and wireless charging are mutually exclusive scenarios, there are two situations in which the wired charging device 2 is detected to be connected. One is the situation in which the wired charging port 11 is plugged into the wired charging device 2, and the other is the situation in which the wireless sensing circuit 13 senses that the wireless charging device 3 is connected and is charging, and the wired charging device 2 is plugged into the wired charging port 11 at this time. Since the charging efficiency of wired charging is higher than that of wireless charging, in this case, a wired connection indication signal will also be output, indicating that the wired charging port 11 is connected to the wired charging device 2 at this time. Figure 1 In the illustrated embodiment, the charging controller 15 is electrically connected to the first charging body 14 and the wireless induction circuit 13. When the charging controller 15 receives a wired connection indication signal, it indicates that the wired charging port 11 is connected to the wired charging device 2. At this time, it is necessary to send a sleep signal to the wireless induction circuit 13 to put the wireless induction circuit 13 into sleep mode. In this case, charging is only guaranteed through the wired charging device 2.

[0037] In the above scheme, the charging circuit 1 is provided with a wired charging port 11, a wireless sensing circuit 13 and a first charging body 14, the wired charging port 11 is used to connect the wired charging device 2, the wireless sensing circuit 13 is used to connect the wireless charging device 3, and the first charging body 14 is used to detect whether the wired charging port 11 is connected to the wired charging device 2, or whether the wireless sensing circuit 13 is connected to the wireless charging device 3, wherein when it is detected that the wired charging port 11 is connected to the wired charging device 2, a wired connection indication signal is output. When the wired connection indication signal is received, the wireless sensing circuit 13 is in a sleep mode. In this way, when it is detected that the wired charging port 11 is connected to the wired charging device 2, the wireless sensing circuit 13 is controlled to be in a sleep mode, and the wired charging device 2 is used for charging first, so that the wired charging mode is isolated from the wireless charging mode, so that the mutually exclusive modes of wired charging and wireless charging will not be interfered with or affected, thereby reducing the isolation circuit connected to the wireless sensing circuit and reducing the cost.

[0038] exist Figure 1In the illustrated embodiment, the first charging body 14 is used to control the wired switch circuit 12 to conduct after the wireless sensing circuit 13 is in the sleep mode, so that the wired charging device 2 is connected to the first charging body 14. At this time, the charging device 2 performs wired charging on the battery 4 of the charging circuit 1 through the first charging body 14. In this way, when it is detected that the wired charging port 11 is connected to the wired charging device 2, the wireless sensing circuit 13 is controlled to the sleep mode, and the wired charging device 2 is used for charging first, so that the wired charging mode is isolated from the wireless charging mode, and the mutually exclusive modes of wired charging and wireless charging will not be interfered with or affected, thereby reducing the isolation circuit connected to the wireless sensing circuit 13 and reducing costs.

[0039] exist Figure 1 and Figure 2 In the illustrated embodiment, the first charging body 14 includes a charge pump. The charge pump may be a fast charging chip. The charge pump fast charging chip can provide a fast, convenient and efficient charging experience, and provide users with a better charging solution. In this embodiment, the first charging body 14 includes a first detection port 141 and a second detection port 142. The first charging body 14 is electrically connected to the wired charging port 11 through the first detection port 141, and is used to detect whether there is a voltage input to the wired charging port 11 through the first detection port 141 to determine whether the wired charging port 11 is connected to the wired charging device 2. If there is a voltage input to the wired charging port 11, it means that the wired charging device 2 has been connected to the wired charging port 11. And the first charging body 14 is electrically connected to the induction signal output port 131 through the second detection port 142, and is used to detect whether there is an output voltage at the induction signal output port 131 through the second detection port 142 to determine whether the wireless induction circuit is connected to a wireless charging device 3. If there is a voltage output at the induction signal output port 131, it means that the wireless induction circuit 13 senses that a wireless charging device 3 is connected to the charging circuit 1.

[0040] Since wired charging and wireless charging are mutually exclusive scenarios, the first charging body 14 simultaneously detects whether the charging circuit 1 is connected to the wired charging device 2 or the wireless charging device 3. According to the charging logic, it is first come first served. If the first charging body 14 detects that the wireless induction circuit 13 is connected to the wireless charging device 3 through the second detection port 142, the wireless charging device 3 is connected to the first charging input port 144 of the first charging body 14 through the induction signal output port 131. At this time, the wireless charging device 3 wirelessly charges the battery 4 of the charging circuit 1 through the first charging body 14.

[0041] Since the charging efficiency of wired charging is higher than that of wireless charging, if the first charging body 14 detects that the wired charging port 11 is connected to the wired charging device 2 through the first detection port 141, or detects that the wireless charging device 3 is connected to the wireless sensing circuit 13 and is charging through the second detection port 142, and detects that the wired charging port 11 is inserted into the wired charging device 2 through the first detection port 141, the wired charging device 2 is used for charging in these two cases first. At this time, the wireless sensing circuit 13 is controlled to be in sleep mode, the wireless sensing circuit 13 stops working, and the sensing signal output port 131 is in a high impedance state and no longer responds to external behavior. At this time, the voltage output by the wireless sensing circuit 13 drops to 0. Afterwards, the first charging body 14 controls the wired switch circuit 12 to be turned on through the first control port 143, so that the wired charging path is connected. The wired charging device 2 is connected to the first charging input port 144 of the first charging body 14 through the turned-on wired switch circuit 12. At this time, the wired charging device 2 performs wired charging on the battery 4 of the charging circuit 1 through the first charging body 14. At this time, although the voltage of the wired charging device 2 is fed to the sensing signal output port 131 of the wireless sensing circuit 13, the wireless sensing circuit 13 is in sleep mode at this time, and the voltage will not affect the wireless sensing circuit 13. Figure 2 In the embodiment shown, the wired switch circuit 12 includes a pair of MOS tubes, and the pair of MOS tubes are arranged back to back. The two MOS tubes are arranged back to back, which has a high integration and response speed, and low power consumption. It has a strong resistance to external interference and noise, and provides good signal integrity and anti-interference performance. It can support a wide voltage range operation and can be applied to a variety of power supply environments.

[0042] With such a configuration, when it is detected that the wired charging port 11 is connected to the wired charging device 2, the wireless sensing circuit 13 is controlled to the sleep mode, and the wired charging device 2 is used for charging first, so that the wired charging mode is isolated from the wireless charging mode, and the mutually exclusive modes of wired charging and wireless charging will not be interfered with or affected, thereby reducing the number of isolation circuits connected to the wireless sensing circuit 13 and reducing costs.

[0043] exist Figure 1 and Figure 2 In the embodiment shown, the charging circuit 1 further includes a second charging body 16. In this embodiment, the second charging body 16 includes a power management integrated circuit. The power management integrated circuit may be a PMIC (Power Management IC) integrated chip, which is a common charging chip and is mainly used to adjust the voltage.

[0044] exist Figure 1 and Figure 2In the illustrated embodiment, the second charging body 16 is electrically connected to the induction signal output port 131, and the first charging body 14 is used to connect the wireless charging device to the first charging body 14 or the second charging body 16 through the induction signal output port 131 when the wireless induction circuit 13 senses a wireless charging device. At this time, the wireless charging device 3 wirelessly charges the battery 4 of the charging circuit 1 through the first charging body 14 or the second charging body 16. Figure 1 and Figure 2 In the illustrated embodiment, the second charging body 16 is electrically connected to the wired switch circuit 12. The first charging body 14 is used to control the wired switch circuit 12 to be turned on after the wireless induction circuit 13 is in the sleep mode, so that the wired charging device 2 is connected to the second charging body 16. At this time, the wired charging device 2 performs wired charging on the battery 4 of the charging circuit 1 through the second charging body 16.

[0045] In this embodiment, the first charging body 14 simultaneously detects whether the charging circuit 1 is connected to the wired charging device 2 or the wireless charging device 3. According to the charging logic, it is first come first served. If the first charging body 14 detects that the wireless induction circuit 13 is connected to the wireless charging device 3 through the second detection port 142, the wireless charging device 3 is connected to the second charging input port 161 of the second charging body 16 through the induction signal output port 131. At this time, the wireless charging device 3 wirelessly charges the battery 4 of the charging circuit 1 through the second charging body 16. If the first charging body 14 detects that the wired charging port 11 is connected to the wired charging device 2 through the first detection port 141, or detects that the wireless induction circuit 13 is connected to the wireless charging device 3 and is charging through the second detection port 142, and detects that the wired charging port 11 is inserted into the wired charging device 2 through the first detection port 141, in these two cases, the wired charging device 2 is used for charging first. At this time, the wireless sensing circuit 13 is controlled to be in sleep mode, the wireless sensing circuit 13 stops working, and the sensing signal output port 131 is in a high impedance state and no longer responds to external behavior. At this time, the voltage output by the wireless sensing circuit 13 drops to 0. Afterwards, when the first charging body 14 detects that the wireless sensing circuit 13 senses a wireless charging device, the first charging body 14 controls the wired switch circuit 12 to be turned on through the first control port 143, so that the wired charging path is connected. The wired charging device 2 is connected to the second charging input port 161 of the second charging body 16 through the turned-on wired switch circuit 12. At this time, the wired charging device 2 performs wired charging on the battery 4 of the charging circuit 1 through the second charging body 16.

[0046] With such a configuration, the charging modes of the second charging subject 16 and the first charging subject 14 are similar, and both the wired charging device 2 and the wireless charging device 3 can charge the battery of the charging circuit 1 through a charge pump or a power management integrated circuit. At the same time, the battery of the charging circuit 1 can also be used as a power supply device for an external device to be charged. The main difference is that the charging priorities of the charge pump and the power management integrated circuit are different, and both the wired charging device 2 and the wireless charging device 3 are preferentially charged through the charge pump. The charging efficiency of the charge pump and the power management integrated circuit are different, and the charging efficiency of the charge pump is higher than the charging efficiency of the power management integrated circuit 1. When the charge pump and the power management integrated circuit are both used as power supply devices, the charging speeds of the two are different, and the charging speed of the charge pump is greater than the charging speed of the power management integrated circuit.

[0047] exist Figure 1 and Figure 2 In the embodiment shown, when the first charging body 14 detects that the wired charging port 11 is connected to the wired charging device 2, it outputs a wired connection indication signal, and at this time sends a sleep signal to the wireless sensing circuit 13. In this embodiment, the signal is sent in any of the following two ways.

[0048] exist Figure 1 and Figure 2 In the illustrated embodiment, the charging circuit 1 further includes a voltage conversion circuit 17, and the charging controller 15 is electrically connected to the wireless sensing circuit 13 through the voltage conversion circuit 17. The charging controller 15 is used to output a sleep signal when receiving a connection indication signal, and the sleep signal is transmitted to the wireless sensing circuit 13 after passing through the voltage conversion circuit 17, so that the wireless sensing circuit 13 is in sleep mode. In this embodiment, by setting the voltage conversion circuit 17, the low voltage of the charging controller 15 is converted into a high voltage of the wireless sensing circuit 13, so that the voltage can be kept consistent for communication. When the charging controller 15 receives the connection indication signal, it indicates that the wired charging device 2 is connected at this time. The charging controller 15 can directly send the sleep signal to the wireless sensing circuit 13 through the voltage conversion circuit 17, so that the wireless sensing circuit 13 is in sleep mode. With such a configuration, when it is detected that the wired charging device 2 is inserted into the wired charging device, the wireless sensing circuit 13 can be directly controlled to be in sleep mode through the charging controller 15. This method is simple, fast and low cost.

[0049] exist Figure 1 and Figure 2In the embodiment, the second charging body 16 is electrically connected to the wireless induction circuit 13 and the charging controller 15. The charging controller 15 is used to send a sleep wake-up signal to the second charging body 16 when receiving a wired connection indication signal. The second charging body 16 is used to send a sleep signal to the wireless induction circuit 13 when receiving a sleep wake-up signal, so that the wireless induction circuit 13 is in sleep mode. In this embodiment, the second charging body 16 is reserved with a signal receiving port 162 for receiving a sleep wake-up signal and a signal transmitting port 163 for sending a sleep signal. When the charging controller 15 receives a connection indication signal, it indicates that the wired charging device 2 is connected at this time. At this time, the charging controller 15 will send a sleep wake-up signal to the signal receiving port 162 of the second charging body 16. When the second charging body 16 receives the sleep wake-up signal, it sends a sleep signal to the wireless induction circuit 13 through the signal transmitting port 163. The sleep signal is high level, so that the wireless induction circuit 13 enters sleep mode. With such a configuration, when it is detected that the wired charging device 2 is inserted into the wired charging device, the port resources of the signal receiving port 162 and the signal transmitting port 163 reserved by the second charging body 16 can be utilized, and the wireless sensing circuit 13 can be controlled to be in a sleep state using software logic, without adding additional circuit structures, and the cost is low.

[0050] exist Figure 2 In the illustrated embodiment, the charging circuit 1 further includes an OTG power supply branch 18 for connecting an OTG device. The OTG device may be a device with an OTG function, which enables the device to directly connect and exchange data without a computer. For example, it may be an external device such as a mobile phone, a tablet computer, a digital camera, a USB storage device, a game controller, etc., which is not limited in this application. These external devices may be devices to be charged, connected to the charging circuit 1, and the battery of the charging circuit 1 needs to be used to power these external devices through the first charging body 14 or the second charging body 16 respectively.

[0051] exist Figure 2In the illustrated embodiment, the OTG power supply branch 18 includes a power supply voltage conversion circuit 181 and a power supply switch circuit 182. The power supply voltage conversion circuit 181 is electrically connected to the first charging body 14 and the power supply switch circuit 182, and the power supply switch circuit 182 is electrically connected to the charging controller 15 and the wired charging port 11. In this embodiment, the power supply switch circuit 182 is electrically connected between the power supply voltage conversion circuit 181 and the wired charging port 11, and is used to control the on and off of the OTG power supply branch 18. The power supply voltage conversion circuit 181 of this embodiment can be a Boost circuit. As a boost circuit, the Boost circuit increases the low voltage of the first charging body 14 to the high voltage of the externally connected OTG device so that the voltage can be kept consistent for communication. The first charging body 14 is also used to detect whether the wired charging port 11 is connected to an OTG device, and output a power supply indication signal when it is detected that the wired charging port 11 is connected to an OTG device. The charging controller 15 is used to control the power supply switch circuit 182 to be turned on when receiving the power supply indication signal, so that the first charging body 14 is connected to the OTG device. At this time, the battery 4 of the charging circuit 1 serves as a power supply device, and supplies power to the OTG device through the first charging body 14 and the power supply voltage conversion circuit 181. With such a configuration, when it is detected that the wired charging port 11 is connected to an OTG device, the charging controller 15 controls the power supply switch circuit 182 to be turned on, so that the first charging body 14 is connected to the OTG device, and the battery 4 of the charging circuit 1 serves as a power supply device, and supplies power to the OTG device through the first charging body 14 and the power supply voltage conversion circuit 181. The battery 4 of the charging circuit 1 of this embodiment supplies power to the externally connected OTG device through the first charging body 14, which has more usage scenarios and is convenient for users.

[0052] exist Figure 2 In the illustrated embodiment, the charging controller 15 is electrically connected to the power switch circuit 182 via the voltage conversion circuit 17. The charging controller 15 is used to output a control signal when receiving a power supply indication signal. The control signal is transmitted to the power switch circuit 182 after passing through the voltage conversion circuit 17, so that the power switch circuit 182 is turned on. In this embodiment, by providing the voltage conversion circuit 17, the low voltage of the charging controller 15 is converted into a high voltage of the power switch circuit 182, so that the voltage can be kept consistent for communication, thereby controlling the on and off of the power switch circuit 182 accurately. Figure 2 In the embodiment shown, the power switch circuit 182 includes a pair of MOS tubes, and the pair of MOS tubes are arranged back to back. The two MOS tubes are arranged back to back, which has high integration and response speed, and low power consumption. It has strong resistance to external interference and noise, and provides good signal integrity and anti-interference performance. It can support a wide voltage range operation and can be applied to a variety of power supply environments.

[0053] exist Figure 2In the illustrated embodiment, when the wireless sensing circuit 13 senses that a wireless charging device 3 is connected, the wireless charging device 3 wirelessly charges the battery 4 of the charging circuit 1 through the first charging body 14 or the second charging body 16, and the wired switch circuit 12 is disconnected at this time, that is, the wired charging is disconnected. At the same time, when the OTG device is connected to the wired charging port 11, the battery 4 of the charging circuit 1 acts as a power supply device, and provides wired power to the OTG device through the first charging body 14 and the power supply voltage conversion circuit 181. In these two scenarios, the wireless charging path and the OTG device power supply path can be disconnected through the wired switch circuit 12, and are completely isolated. In this way, the wireless charging path will maintain normal charging, and the OTG device will be connected to the first charging body 14 through the power supply switch circuit 182 and the power supply voltage conversion circuit 181 to realize the function of the battery 4 of the charging circuit 1 to reversely charge the OTG device, that is, the voltage output by the battery 4 of the charging circuit 1 through the first charging body 14 passes through the Boost circuit and the power supply switch circuit 182 to power the OTG device. At this time, the wired switch circuit 12 is disconnected, that is, the wired charging is disconnected, thereby isolating the wireless charging path and the OTG device power supply path.

[0054] exist Figure 2 In the illustrated embodiment, the first charging body 14 is used to send a power supply wake-up signal to the second charging body 16 when it is detected that the wireless sensing circuit 13 senses a wireless device to be charged and detects that the wired charging port 11 is connected to an OTG device. The second charging body 16 is used to connect to the wireless device to be charged when receiving the power supply wake-up signal. At this time, the battery 4 of the charging circuit 1 acts as a power supply device to power the wireless device to be charged through the second charging body 16. In this embodiment, when the first charging body 14 detects that the wireless sensing circuit 13 senses a wireless device to be charged through the second detection port 142, and detects that the wired charging port 11 is connected to an OTG device through the first detection port 141, it indicates that the charging circuit 1 is in a wireless reverse charging mode. In this mode, when the user uses an OTG device, the battery 4 of the charging circuit 1 can be used as a power supply device to power the wireless device to be charged through the second charging body 16 and the wireless sensing circuit 13. The wireless device to be charged is a powered device, and wireless reverse charging can use the battery 4 of the charging circuit 1 to reversely power the wireless device to be charged after passing through the second charging body 16 and the wireless sensing circuit 13. At this time, the wired switch circuit 12 is disconnected, that is, the wired charging is disconnected, and the wireless reverse charging path and the OTG device power supply path are isolated. In this way, the wireless reverse charging and OTG device power supply functions can be realized at the same time. In this way, the power supply problem of wireless reverse charging can be solved without adding an additional power supply path, simplifying the circuit structure and reducing costs.

[0055] exist Figure 2In the illustrated embodiment, the first charging body 14 is used to control the wired switch circuit 12 to conduct when it is detected that the wired charging port 11 is connected to the wired charging device and the wireless sensing circuit 13 senses a wireless device to be charged, so that the wired charging device is connected to the wireless device to be charged. At this time, the wired charging device can be used as a power supply device, which can be connected to the wireless device to be charged and reversely power the wireless device to be charged. In this embodiment, when the first charging body 14 detects that the wired charging port 11 is connected to the wired charging device through the first detection port 141, and detects that the wireless sensing circuit 13 senses a wireless device to be charged through the second detection port 142, it means that the charging circuit 1 is in the wireless reverse charging mode. In this mode, when the user uses the wired charging device, the wired charging device can be used as a power supply device and can directly power the wireless sensing circuit 13. The wireless device to be charged is used as a powered device, and wireless reverse charging can use the wired charging device to reversely power the wireless device to be charged. In this way, the power supply problem of wireless reverse charging can be solved without adding additional power supply paths, simplifying the circuit structure and reducing costs.

[0056] It should be noted that the voltage conversion circuit 17 is electrically connected to the charging controller 15 and is used to convert the voltage to adapt to the voltage of the wireless sensing circuit 13 or the power switch circuit 182. The voltage conversion circuit 17 here can be the same voltage conversion circuit, which is converted to different voltages to keep the voltage of the charging controller 15 consistent with the voltage of the wireless sensing circuit 13 or the power switch circuit 182, and to ensure stable communication. It will not be repeated here. In some other embodiments, the voltage conversion circuit 17 electrically connected to the charging controller 15 can be different voltage conversion circuits to convert to different voltages and adapt to different devices or circuits, which is not limited in this application.

[0057] The present application also provides a charging device, including: Figure 1 to Figure 2 The charging circuit 1 shown in the embodiment. In this embodiment, the charging device can be a mobile phone, and the battery of the charging circuit 1 can be a mobile phone battery. But it is not limited to this. The charging device is set by the above Figure 1 to Figure 2 The charging circuit 1 shown in the embodiment has a simplified structure and reduced costs.

[0058] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A charging circuit, characterized in that: include: Wired charging port, used to connect wired charging devices; A wireless sensing circuit, used for sensing a wireless charging device, and comprising a sensing signal output port; and The first charging body is electrically connected to the wired charging port and is electrically connected to the wireless sensing circuit through the sensing signal output port; the first charging body is used to detect whether the wired charging port is connected to the wired charging device, or detect whether the wireless sensing circuit senses the presence of the wireless charging device; the first charging body is used to output a wired connection indication signal when it is detected that the wired charging port is connected to the wired charging device; wherein, when the wired connection indication signal is received, the wireless sensing circuit is in a sleep mode.

2. The charging circuit according to claim 1, characterized in that: The charging circuit also includes a voltage conversion circuit and a charging controller electrically connected to the voltage conversion circuit. The charging controller is electrically connected to the wireless sensing circuit through the voltage conversion circuit. The charging controller is used to output the sleep signal when receiving the wired connection indication signal. The sleep signal is transmitted to the wireless sensing circuit after passing through the voltage conversion circuit, so that the wireless sensing circuit is in the sleep mode.

3. The charging circuit according to claim 1, characterized in that: The charging circuit also includes a second charging body and a charging controller. The second charging body is electrically connected to the wireless induction circuit and the charging controller. The charging controller is used to send a sleep wake-up signal to the second charging body when receiving the wired connection indication signal; the second charging body is used to send the sleep signal to the wireless induction circuit when receiving the sleep wake-up signal, so that the wireless induction circuit is in the sleep mode.

4. The charging circuit according to claim 2 or 3, characterized in that: The charging circuit also includes a wired switch circuit electrically connected to the wired charging port; The wired switch circuit is electrically connected to the first charging body, and the first charging body is used to control the wired switch circuit to be turned on after the wireless induction circuit is in a sleep mode, so that the wireless charging device is connected to the first charging body; or The charging circuit also includes a second charging body, and the wired switch circuit is electrically connected to the first charging body and the second charging body; the first charging body is used to control the wired switch circuit to be turned on after the wireless induction circuit is in sleep mode, so that the wired charging device is connected to the second charging body.

5. The charging circuit according to claim 1, characterized in that: The charging circuit also includes a second charging body, which is electrically connected to the induction signal output port. The first charging body is used to connect the wireless charging device to the first charging body or the second charging body through the induction signal output port when the wireless induction circuit senses the wireless charging device.

6. The charging circuit according to claim 1 or 5, characterized in that: The charging circuit also includes an OTG power supply branch and a charging controller. The OTG power supply branch is used to connect to the OTG device and includes a power supply voltage conversion circuit and a power supply switch circuit. The power supply voltage conversion circuit is electrically connected to the first charging body and the power supply switch circuit. The power supply switch circuit is electrically connected to the charging controller and the wired charging port. The first charging body is also used to detect whether the wired charging port is connected to the OTG device, and output a power supply indication signal when it is detected that the wired charging port is connected to the OTG device. The charging controller is used to control the power supply switch circuit to be turned on when receiving the power supply indication signal, so that the first charging body is connected to the OTG device.

7. The charging circuit according to claim 6, characterized in that: The charging circuit further includes a voltage conversion circuit, the charging controller is electrically connected to the power switch circuit via the voltage conversion circuit, and the charging controller is configured to output a control signal upon receiving the power supply indication signal, the control signal is transmitted to the power switch circuit after passing through the voltage conversion circuit, so that the power switch circuit is turned on; and / or The power supply switch circuit includes a pair of MOS tubes, and the pair of MOS tubes are arranged back to back.

8. The charging circuit according to claim 6, characterized in that: The charging circuit also includes a second charging body; the first charging body is used to send a power supply wake-up signal to the second charging body when it detects that the wireless sensing circuit senses a wireless device to be charged and detects that the wired charging port is connected to the OTG device; the second charging body is used to connect to the wireless device to be charged when receiving the power supply wake-up signal; and / or The second charging body includes a power management integrated circuit.

9. The charging circuit according to claim 1, characterized in that: The first charging body is used to control the wired switch circuit to be turned on when it is detected that the wired charging port is connected to the wired charging device and the wireless sensing circuit senses a wireless device to be charged, so that the wired charging device is connected to the wireless device to be charged; and / or The first charging entity comprises a charge pump; and / or The wireless sensing circuit includes a wireless sensing chip; and / or The wired switch circuit includes a pair of MOS tubes, and the pair of MOS tubes are arranged back to back.

10. An electronic device, characterized in that: include: A charging circuit as claimed in any one of claims 1 to 9.

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