Electronic device

Abstract

The invention relates to electronic equipment. The electronic equipment comprises a wireless charging interface; the first circuit is connected with the wireless charging interface; a wired charging interface; the second circuit is connected with the first circuit and the wired charging interface; the voltage reduction assembly is arranged on the second circuit, the first end of the voltage reduction assembly is connected with the wired charging interface, and the second end of the voltage reduction assembly is connected with the battery; and the control circuit is used for controlling the voltage reduction assembly to enable the voltage of the wired charging interface to be within a preset voltage range under the condition that wireless charging is performed through the first circuit and power is supplied to the second external equipment through the second circuit. The voltage drop of the voltage reduction assembly is collected and adjusted through the controller, the technical problem of coexistence and mutual exclusion of wireless charging and wired power supply is solved, and the use experience of a user is improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of electronic device charging, and in particular to an electronic device. Background Art

[0002] At present, electronic devices such as mobile phones basically support reverse powering external devices connected via wires through USB ports (such as Type-C). Since mobile phones and other electronic devices need to charge the battery through the power management integrated circuit when supporting wireless charging, and mobile phones and other electronic devices need to reversely output from the battery when reverse powering the device, the two are incompatible. Therefore, when electronic devices are wirelessly charging, they cannot use wired functions at the same time.

[0003] Wireless charging has gradually become a mainstream way to charge electronic devices due to its advantages of non-contact, convenience, no cables, and plug-free. However, most electronic devices in the prior art are still designed not to use wired functions while performing wireless charging, which undoubtedly affects the user experience. Summary of the invention

[0004] In order to overcome the problems existing in the related art, the present disclosure provides an electronic device.

[0005] According to a first aspect of an embodiment of the present disclosure, an electronic device is provided, comprising: a wireless charging interface; a first circuit connected to the wireless charging interface, the first circuit being used to receive energy through the wireless charging interface to charge a battery, and the first circuit being also used to power a first external device through the wireless charging interface; a wired charging interface; a second circuit connected to the first circuit, the second circuit being connected to the wired charging interface, the second circuit being used to receive energy through the wired charging interface to charge a battery, and the second circuit being also used to power a second external device through the wired charging interface; a step-down component, the step-down component being arranged on the second circuit, the first end of the step-down component being connected to the wired charging interface, and the second end of the step-down component being connected to the battery; and a control circuit, the control circuit being used to control the step-down component so that the voltage of the wired charging interface is within a preset voltage range when wireless charging is performed through the first circuit and power is supplied to the second external device through the second circuit.

[0006] In some possible embodiments, the control circuit includes a charge pump, which is connected to the first circuit and the second circuit. When the first circuit performs wireless charging and the second circuit powers a second external device, the charge pump is used to control the step-down component to divide the voltage according to the working voltage required by the wired charging interface so that the voltage of the wired charging interface is within a preset voltage range.

[0007] In some possible implementations, the charge pump is also connected to a battery, and when the first circuit charges the battery, the first circuit wirelessly charges the battery through the charge pump; and / or, when the second circuit charges the battery, the second circuit wiredly charges the battery through the charge pump.

[0008] In some possible embodiments, the charge pump has a first pin and a second pin, the first pin is electrically connected to the step-down component, and the second pin is electrically connected to the wired charging interface. When the first circuit performs wireless charging and the second circuit powers a second external device, the charge pump controls the step-down component through the first pin to perform voltage division based on the voltage of the wired charging interface collected by the second pin, so that the voltage of the wired charging interface is within a preset voltage range.

[0009] In some possible implementations, the step-down component includes a first transistor and a second transistor. When the first circuit performs wireless charging, the first transistor and the second transistor are in a non-cut-off state, and the control circuit controls the first transistor and the second transistor to perform voltage division so that the voltage of the wired charging interface is within a preset voltage range.

[0010] In some possible implementations, the first transistor and the second transistor are arranged back-to-back in series.

[0011] In some possible embodiments, the first circuit includes a switch component, and the switch component is connected between the wireless charging interface and the connection ends of the first circuit and the second circuit. When the first circuit is wirelessly charged, the control circuit controls the switch component to be in an on state so that the first circuit receives energy through the wireless charging interface to charge the battery, or the first circuit powers a first external device through the wireless charging interface.

[0012] In some possible embodiments, the switch component includes a first switch and a second switch. When the first circuit is wirelessly charged, the control circuit controls the first switch and the second switch to be in an on state so that the first circuit receives energy through the wireless charging interface to charge the battery, or the first circuit powers a first external device through the wireless charging interface.

[0013] In some possible implementations, the first switch and the second switch are arranged back-to-back in series.

[0014] In some possible implementations, a third circuit is connected to the connection ends of the first circuit and the second circuit, and when the first circuit powers a first external device, the third circuit powers the first circuit; and / or when the second circuit powers a second external device, the third circuit powers the second circuit.

[0015] In some possible implementations, the third circuit is also connected to a battery, and when the first circuit charges the battery, the first circuit wirelessly charges the battery through the third circuit; and / or, when the second circuit charges the battery, the second circuit wiredly charges the battery through the third circuit.

[0016] In some possible embodiments, the charge pump has a third pin, which is electrically connected to the switch component. When the first circuit is wirelessly charged, the charge pump controls the switch component to be turned on through the third pin to receive energy through the wireless charging interface to charge the battery, or to power a first external device through the wireless charging interface.

[0017] The technical solution provided by the embodiments of the present disclosure may include the following beneficial effects: the control circuit of the present disclosure is used to control the voltage reduction component so that the voltage of the wired charging interface is within a preset voltage range when wireless charging is performed through the first circuit and power is supplied to the second external device through the second circuit. Thus, the voltage drop of the voltage reduction component is collected and adjusted by the control circuit, solving the technical problem of coexistence and mutual exclusion of wireless charging and wired power supply, and improving the user experience.

[0018] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] 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.

[0020] Figure 1 The invention is a circuit diagram of a wireless charging and OTG power supply compatible circuit in the related technology.

[0021] Figure 2 It is a Boost circuit diagram in the related art.

[0022] Figure 3 is a circuit diagram of a wireless charging and wired power supply compatible circuit according to an exemplary embodiment.

[0023] Figure 4 It is a schematic structural diagram of a MOS transistor working range according to an exemplary embodiment.

[0024] Figure 5 is a voltage drop circuit diagram of a MOS transistor according to an exemplary embodiment.

[0025] Figure 6 is a voltage-dividing circuit diagram of a voltage-reducing component according to an exemplary embodiment.

[0026] Figure 7 The present invention is a flow chart of a charging method for wireless charging and wired power supply compatibility according to an exemplary embodiment.

[0027] Figure 8 The present invention is a flowchart of a charging method compatible with wireless charging and wired power supply according to an exemplary embodiment.

[0028] Fig. 9 It is a block diagram of an electronic device according to an exemplary embodiment.

[0029] Reference numerals:

[0030] 1. Power chip; 2. Battery; 3. Type-C connector; 4. MOS switch; 5. Isolation device;

[0031] 10. first circuit; wireless charging interface, 104; 101. wireless chip; 102. first switch; 103. second switch; 105. switch component; 20. second circuit; 201. wired charging interface; 30. control circuit; 40. step-down component; 401. first transistor; 402. second transistor; 50. third circuit;

[0032] 800, electronic device; 802, processing component; 804, memory; 806, power component; 808, multimedia component; 810, audio component; 812, I / O interface; 814, sensor component; 816, communication component; 820, processor. DETAILED DESCRIPTION

[0033] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0034] OTG is the abbreviation of On-The-Go, which is mainly used for connection and data transmission between various devices without a host.

[0035] Some cost-cutting solutions on the market do not allow wireless charging and OTG devices to coexist. OTG devices cannot be used during wireless charging, and vice versa. The product instructions state that they cannot coexist, sacrificing the compatibility and convenience of such functions.

[0036] In the related technology, there are mainly the following solutions, such as Figure 1 As shown, an external isolation device 5 is added. A power chip 1 and a pair of back-to-back MOS switches 4 are added between the battery 2 and the Type-C connector 3 for power isolation. That is, a power chip 1 is added specifically for OTG. The power chip 1 draws power from the battery 2. When the OTG function is used, the electronic device needs to supply power to the external OTG device through the interface, generally providing a 5V voltage; therefore, it needs to be boosted to 5V. The power chip 1 uses a Boost chip. For the working principle of the Boost circuit, please refer to Figure 2 , the Boost circuit usually inputs a low voltage Vi and outputs a high voltage Vo. The voltage of the battery 2 is generally 3.6-4.45V, and the output voltage is 5.5V. The output is given to the Type-C port of the Type-C connector 3 to provide power for the OTG device. By providing power to the OTG separately, the coexistence of wireless and OTG scenarios is ensured.

[0037] The above solution will bring the following problems: when ensuring the coexistence of wireless and OTG scenarios, the product cost will be increased.

[0038] In order to solve the above technical problem, according to a first aspect of the present disclosure, an electronic device is provided. The electronic device of the present disclosure can provide power to a second external device connected by wire while performing wireless charging.

[0039] like Figure 3 As shown, in the present disclosure, the electronic device may include a charging control circuit including the following circuits: a wireless charging interface 104 , a first circuit 10 , a second circuit 20 , a wired charging interface 201 , a voltage reduction component 40 , and a control circuit 30 .

[0040] The second circuit 20 is connected to the first circuit 10, and the second circuit 20 includes a step-down component 40, and a first end of the step-down component 40 is connected to one end of the second circuit 20; the control circuit 30 is connected to the second circuit 20, and the control circuit 30 is connected to the second end of the step-down component 40 for collecting the output signal of the step-down component 40, and the control circuit 30 is connected to the third end of the step-down component 40 for adjusting the voltage drop of the step-down component 40.

[0041] It should be noted that the application scenario of the present disclosure can be an electronic device with wireless charging, but OTG power supply can only be supplied through wired reverse charging, but not through wireless reverse charging.

[0042] Among them, OTG devices include but are not limited to OTG mouse, OTG USB disk, OTG sound card and other electronic devices that realize data transmission and power supply based on OTG technology, and the present disclosure does not make specific limitations here.

[0043] In the present disclosure, the wireless charging interface 104 can be connected to the first circuit 10, and the first circuit 10 is used to receive energy through the wireless charging interface 104 to charge the battery 2. The first circuit 10 can also be used to power a first external device through the wireless charging interface 104. The first external device can be any device that needs to be charged by the electronic device, and the present disclosure does not make specific limitations.

[0044] The first circuit 10 may be a wireless charging circuit, and the first circuit 10 may include a wireless chip 101 .

[0045] The second circuit 20 can be connected to the first circuit 10, and the second circuit 20 can also be connected to the wired charging interface 201, and can receive energy to charge the battery 2 through the wired charging interface 201. The second circuit 20 can also be used to power a second external device through the wired charging interface 201. The second external device can be any device that requires an electronic device to charge it, and the present disclosure does not specifically limit it.

[0046] In the present disclosure, OTG power supply is taken as an example to explain the power supply for the second external device in the present disclosure, but the present disclosure is not limited thereto, and the power supply for the second external device in the present disclosure may be to supply power to the external device in any wired form.

[0047] The second circuit 20 may be a wired charging circuit, and the first circuit 10 is connected to the second circuit 20. In the present disclosure, wireless charging and wired charging share some charging devices and charging paths.

[0048] In the present disclosure, the step-down component 40 is disposed on the second circuit 20 , a first end of the step-down component 40 may be connected to the wired charging interface 201 , and a second end of the step-down component 40 may be connected to the battery 2 .

[0049] In the present disclosure, the control circuit 30 can control the step-down component 40 to make the voltage of the wired charging interface 201 within a preset voltage range when wireless charging is performed through the first circuit 10 and power is supplied to the second external device through the second circuit 20. The so-called preset voltage range can be a pre-set voltage range.

[0050] The wired charging path and the wireless path need to be completely isolated physically. During wireless charging, the voltage output by the wireless chip 101 cannot be fed back to the wired reverse charging power supply interface of the OTG power supply. This is because the voltage of wireless charging may be 10V or 20V. If the user plugs an OTG device, such as a USB flash drive or a digital headset, into the wired reverse charging power supply interface at this time, the USB flash drive or the digital headset can withstand a voltage of 5V. The wireless high voltage may damage the USB flash drive or the digital headset, so the wired charging path and the wireless path need to be completely isolated physically. In order to meet the user's shared needs for both wireless charging and OTG power supply, for example, the user may be wirelessly charging while listening to music with a digital headset. Therefore, a control circuit 30 and a step-down component 40 are set in the wireless charging and OTG power supply compatible circuit.

[0051] In the present disclosure, the step-down component 40 may be a linear regulator. By adjusting the voltage drop of the step-down component 40 , the voltage difference between the input and output of the linear regulator is completely absorbed by the step-down component 40 .

[0052] In the present disclosure, the control circuit 30 is used to collect the output signal of the step-down component 40, and to adjust the voltage drop of the step-down component 40, so that the output signal of the step-down component 40 is maintained at a preset value, which can meet the common needs of the two scenarios of wireless charging and OTG power supply of the user. In the present disclosure, the second circuit 20 is connected to the first circuit 10, and the second circuit 20 includes a step-down component 40, and the first end of the step-down component 40 is connected to the wired charging interface 201 (for example, one end of the second circuit 20). The control circuit 30 is connected to the second circuit 20, and the control circuit 30 is connected to the second end of the step-down component 40, and is used to collect the output signal of the step-down component 40. The control circuit 30 can also be connected to the third end of the step-down component 40 to adjust the voltage drop of the step-down component 40. The present disclosure collects and adjusts the voltage drop of the step-down component 40 by the control circuit 30, so that the output signal of the step-down component 40 is maintained at a preset value, solves the technical problem of coexistence and mutual exclusion of wireless charging and OTG power supply, and improves the user's experience.

[0053] In some possible implementations, such as Figure 3 As shown, the first circuit 10 has a first charging state; the second circuit 20 has a second charging state;

[0054] When the first charging state and the second charging state are simultaneously turned on, the control circuit 30 is used to collect the output signal of the step-down component 40 and to adjust the voltage drop of the step-down component 40 to keep the output signal of the step-down component 40 stable.

[0055] It can be understood that the first circuit 10 can be a wireless charging circuit, and the first charging state can be a wireless charging state; the wireless charging state includes a wireless fast charging state and a wireless normal charging state; the second circuit 20 can be a wired charging circuit, and the second charging state can be an OTG power supply state to the outside world.

[0056] Among them, the first charging state and the second charging state are turned on at the same time, that is, the two scenarios of wireless charging and OTG power supply are shared.

[0057] In the disclosed embodiment, when the first charging state and the second charging state are turned on at the same time, that is, when the two scenarios of wireless charging and OTG power supply are shared, the control circuit 30 is used to collect the output signal of the step-down component 40, and is also used to adjust the voltage drop of the step-down component 40, so that the output signal of the step-down component 40 is maintained at a preset value to keep the output signal of the step-down component 40 stable, thereby satisfying the user's common needs for the two scenarios of wireless charging and OTG power supply.

[0058] In some possible implementations, such as Figure 3 As shown, the control circuit 30 is connected to the first circuit 10.

[0059] When the first charging state is turned on and the second charging state is turned off, the first circuit 10 can supply power to the battery 2 through the control circuit 30 .

[0060] Among them, the first circuit 10 can be a wireless charging circuit, and the first charging state can be a wireless charging state; the second circuit 20 can be a wired charging circuit, and the second charging state can be an OTG power supply state to the outside. In the present disclosure, the first circuit 10 can include a switch component 105, and the switch component 105 can be connected between the wireless charging interface 104 and the connection end of the first circuit 10 and the second circuit 20. When the first circuit 10 charges the battery 2, the control circuit 30 can control the switch component 105 to be in a conducting state, so that the first circuit 10 receives energy through the wireless charging interface 104 to charge the battery 2.

[0061] In the present disclosure, when the first circuit 10 performs wireless charging, the control circuit 30 may control the switch component 105 to be in an on state, so that the first circuit 10 supplies power to the first external device through the wireless charging interface 104 .

[0062] In the present disclosure, the switch component 105 may include a first switch 102 and a second switch 103. When the first circuit 10 is wirelessly charged, the control circuit 30 may control the first switch 102 and the second switch 103 to be in a conducting state, so that the first circuit 10 receives energy through the wireless charging interface 104 to charge the battery 2.

[0063] In the present disclosure, the switch component 105 may include a first switch 102 and a second switch 103. When the first circuit 10 is wirelessly charged, the control circuit 30 may control the first switch 102 and the second switch 103 to be in a conducting state, so that the first circuit 10 supplies power to the first external device through the wireless charging interface 104.

[0064] In some embodiments, the first switch 102 and the second switch 103 may be arranged in series back to back. Further, the first switch 102 and the second switch 103 are both transistors, and specifically, the first switch 102 and the second switch 103 may be metal oxide semiconductor field effect transistors.

[0065] The control circuit 30 can be a charge pump, which can realize fast charging of the battery 2 in the wireless fast charging scenario. The charge pump can be connected to the first circuit 10 and can also be connected to the second circuit 20. When the first circuit 10 performs wireless charging and the second circuit 20 supplies power to the second external device, the charge pump can be used to control the step-down component to divide the voltage according to the working voltage required by the wired charging interface 201, so that the voltage of the wired charging interface 201 is within a preset voltage range.

[0066] In the present disclosure, the charge pump may also be connected to the battery 2 , and when the first circuit 10 charges the battery 2 , the first circuit 10 wirelessly charges the battery 2 through the charge pump.

[0067] In the present disclosure, the charge pump may also be connected to the battery 2 , and when the second circuit 20 charges the battery 2 , the second circuit 20 may perform wired charging for the battery 2 through the charge pump.

[0068] In the present disclosure, the charge pump can also be connected to the battery 2. When the first circuit 10 charges the battery 2 and the second circuit 20 charges the battery 2, the second circuit 20 can perform wired charging for the battery 2 through the charge pump. In the embodiment of the present disclosure, when the first charging state is turned on and the second charging state is turned off, that is, when the wireless charging scenario is enabled and the OTG power supply scenario is turned off, the first circuit 10 can power the battery 2 through the control circuit 30. Further, the first circuit 10 can perform fast charging for the battery 2 through the charge pump.

[0069] In the present disclosure, the charge pump may have a first pin Vgs and a second pin VUSB, the first pin Vgs may be electrically connected to the buck component 40, and the second pin VUSB may be electrically connected to the wired charging interface 201. When the first circuit 10 performs wireless charging and the second circuit 20 supplies power to the second external device, the charge pump may control the buck component 40 to divide the voltage through the first pin Vgs according to the voltage of the wired charging interface 201 collected by the second pin VUSB, so that the voltage of the wired charging interface 201 is within a preset voltage range.

[0070] In the present disclosure, the charge pump may have a third pin GATE, which may be electrically connected to the switch component 105. When the first circuit 10 is wirelessly charged, the charge pump may control the switch component 105 to be turned on through the third pin GATE to receive energy through the wireless charging interface 104 to charge the battery 2.

[0071] In the present disclosure, when the first circuit 10 performs wireless charging, the charge pump can control the switch component 105 to be turned on through the third pin GATE, so as to power the first external device through the wireless charging interface 104 .

[0072] In some possible implementations, such as Figure 3 As shown, the step-down component 40 includes a first transistor 401 and a second transistor 402, and the first transistor 401 and the second transistor 402 are arranged in series back to back, that is, the source ends of the two NMOS tubes are connected, and the drains of the two PMOS tubes are connected. .

[0073] The first transistor 401 may be a metal-oxide-semiconductor field-effect transistor (MOSFET), and the second transistor 402 may be a metal-oxide-semiconductor field-effect transistor (MOSFET). The first transistor 401 and the second transistor 402 may both be NMOS transistors or PMOS transistors.

[0074] When the first circuit 10 performs wireless charging, the first transistor 401 and the second transistor 402 are in a non-cut-off state, and the control circuit 30 controls the first transistor 401 and the second transistor 402 to perform voltage division so that the voltage of the wired charging interface 201 is within a preset voltage range.

[0075] In some possible implementations, such as Figure 3As shown, the electronic device of the present disclosure may further include: a third circuit 50, which may be connected to the connection terminal between the first circuit 10 and the second circuit 20. When the first circuit 10 charges the battery 2, the first circuit 10 wirelessly charges the battery 2 through the third circuit 50.

[0076] In the present disclosure, in the case where the second circuit 20 supplies power to the second external device, the third circuit 50 may supply power to the second circuit 20 .

[0077] The third circuit 50 is connected to one end of the second circuit 20 , and when the first charging state is turned off and the second charging state is turned on, the third circuit 50 can supply power to the second circuit 20 .

[0078] Among them, the first circuit 10 may be a wireless charging circuit, and the first charging state may be a wireless charging state; the second circuit 20 may be a wired charging circuit, and the second charging state may be an OTG power supply state to the outside world.

[0079] In the present disclosure, the third circuit 50 may be connected to the battery 2 . When the first circuit 10 charges the battery 2 , the first circuit 10 wirelessly charges the battery 2 through the third circuit 50 .

[0080] In the present disclosure, in the case where the second circuit 20 supplies power to the second external device, the third circuit 50 may supply power to the second circuit 20 .

[0081] The third circuit 50 may be a power management integrated circuit, Power Management IC, PMIC, which is used to manage the power supply device in the host system of the electronic device.

[0082] In the embodiment of the present disclosure, when the first charging state is turned off and the second charging state is turned on, that is, when the wireless charging scene is turned off and the OTG power supply scene is turned on, the power management integrated circuit can supply power to the second circuit 20. Further, the power management integrated circuit supplies power to the external OTG through the second circuit 20.

[0083] The voltage-reducing component 40 may be a linear regulator LDO, and specifically, the voltage-reducing component 40 may be a MOS transistor. Figure 4 As shown in the figure, the working ranges of MOS transistors are: variable resistance region A, saturation region B, and cut-off region C, while the MOS transistor in LDO works in saturation region B and variable resistance region A. When the output voltage Vout of the linear regulator LDO changes, the G-pole voltage VGS will be adjusted accordingly. The voltage drop circuit of the MOS transistor is as follows: Figure 5As shown, the MOS transistor may include a source S, a gate G, and a drain D. By adjusting the G-pole (gate) voltage VGS, the working range of the MOS transistor is changed, so that the MOS transistor absorbs the voltage, Vout = Vin-Vds, and the voltage difference between the input and output of the MOS transistor is completely absorbed by the MOS transistor, that is, Vds, thereby ensuring that Vout is always stable at the set value.

[0084] The control circuit 30 is used to collect the output signal of the step-down component 40. For example, the control circuit 30 collects the output voltage Vout of the step-down component 40 through a voltage collector. When the output voltage Vout changes, the control circuit 30 controls the MOS transistor to operate in the variable resistance area A, and the G-pole voltage VGS will be adjusted accordingly and used to adjust the voltage drop of the step-down component 40, so that the output signal of the step-down component 40 is maintained at a preset value, which can meet the common needs of users in the two scenarios of wireless charging and OTG power supply.

[0085] In addition, the first circuit 10 may also be provided with a first switch 102 and a second switch 103 connected in series back to back. Further, the first switch 102 and the second switch 103 are both transistors. Specifically, the first switch 102 and the second switch 103 may be metal oxide semiconductor field effect transistors, that is, the source ends of the two NMOS tubes are connected, and the drains of the two PMOS tubes are connected. The second circuit 20 includes a first transistor 401 and a second transistor 402 connected back to back, that is, the source ends of the two NMOS tubes are connected, and the drains of the two PMOS tubes are connected.

[0086] When the first circuit 10 is in a wireless charging scenario alone, the first switch 102 and the second switch 103 are both turned on, and the first transistor 401 and the second transistor 402 are both turned off, so that the voltage output by the wireless chip 101 cannot be fed back to the wired reverse charging power supply interface of the OTG power supply of the second circuit 20, thereby preventing damage caused by users accidentally inserting the OTG device.

[0087] When the wireless charging and OTG power supply scenarios are used together, the first switch 102 and the second switch 103 are both turned on to realize the use of the wireless charging scenario; in the wireless charging scenario, the OTG power supply scenario is enabled at the same time, because the voltage of the wireless charging may be 10V or 20V, and the voltage that the OTG device plugged into the wired reverse charging power supply interface can withstand may be 5V, so the step-down component 40 is required to divide the voltage, such as Figure 6As shown, the control circuit 30 collects the output voltage Vout of the step-down component 40. When the output voltage Vout changes, the control circuit 30 controls the first transistor 401 and the second transistor 402 to operate in the variable resistance zone A, and adjusts the voltage drop of the step-down component 40, so that a voltage difference is formed between the input voltage Vin and the output voltage Vout of the step-down component 40, thereby maintaining the output voltage Vout of the step-down component 40 at a preset value, thereby satisfying the common needs of the user in the two scenarios of wireless charging and OTG power supply.

[0088] In some possible implementations, such as Figure 3 As shown, the second circuit 20 includes a wired charging interface 201 , and the second end of the step-down component 40 is located between the wired charging interface 201 and the step-down component 40 .

[0089] Among them, the wired charging interface 201 can be a Type-C interface or a USB interface, which is not specifically limited in the embodiment of the present disclosure.

[0090] In the disclosed embodiment, the first circuit 10 can be in use all the time, that is, the wireless charging circuit can be in a charging scenario all the time, and the high voltage of 10V to 20V output by the wireless chip 101 is fast charged through the control circuit 30, such as a charge pump. When the second circuit 20 starts to supply power to the external OTG, the control circuit 30 controls the step-down component 40 to work in the variable resistance zone A, and is used to adjust the voltage drop of the step-down component 40 so that the output voltage of the step-down component 40 is always maintained at 5V, so that wireless fast charging can be achieved while supplying power to the external OTG device.

[0091] According to a second aspect of the present disclosure, a charging method compatible with wireless charging and OTG power supply is provided, such as Figure 3 As shown, the circuit compatible with wireless charging and OTG power supply includes a first circuit 10, a second circuit 20 and a control circuit 30;

[0092] The second circuit 20 is connected to the first circuit 10, and the second circuit 20 includes a step-down component 40, a first end of the step-down component 40 is connected to one end of the second circuit; the control circuit 30 is connected to the second circuit 20, the control circuit 30 is connected to the second end of the step-down component 40, and the control circuit 30 is connected to the third end of the step-down component 40.

[0093] It should be noted that the application scenario of the present disclosure can be an electronic device with wireless charging, but OTG power supply can only be supplied through wired reverse charging, but not through wireless reverse charging.

[0094] Among them, OTG devices include but are not limited to OTG mouse, OTG USB disk, OTG sound card and other electronic devices that realize data transmission and power supply based on OTG technology, and the present disclosure does not make specific limitations here.

[0095] The first circuit 10 can be a wireless charging circuit, and the wireless charging circuit includes a wireless chip 101; the second circuit 20 can be a wired charging circuit, and the first circuit 10 is connected to the second circuit 20. Wireless charging and wired charging share some charging devices and charging paths. The wired charging path and the wireless path need to be completely isolated physically. During wireless charging, the voltage output by the wireless chip 101 cannot be fed back to the wired reverse charging power supply interface of the OTG power supply. This is because the voltage of wireless charging may be 10V or 20V. If the user plugs an OTG device, such as a USB flash drive or a digital headset, into the wired reverse charging power supply interface at this time, the USB flash drive or the digital headset can withstand a voltage of 5V. The wireless high voltage may damage the USB flash drive or the digital headset, so the wired charging path and the wireless path need to be completely isolated physically. In order to meet the user's shared needs for the two scenarios of wireless charging and OTG power supply, for example, the user may be wirelessly charging while listening to music with a digital headset. Therefore, a control circuit 30 and a step-down component 40 are set in the wireless charging and OTG power supply compatible circuit.

[0096] The step-down component 40 may be a linear regulator. By adjusting the voltage drop of the step-down component 40 , the voltage difference between the input and output of the linear regulator is completely absorbed by the step-down component 40 .

[0097] The control circuit 30 is used to collect the output signal of the step-down component 40 and to adjust the voltage drop of the step-down component 40 so that the output signal of the step-down component 40 is maintained at a preset value, thereby satisfying the common needs of the user in both wireless charging and OTG power supply scenarios.

[0098] like Figure 7 As shown, the charging method includes the following steps.

[0099] In step S100 , it is detected whether the charging states of the first circuit and the second circuit are simultaneously turned on.

[0100] The step of detecting whether the charging states of the first circuit and the second circuit are simultaneously turned on specifically includes the following two situations:

[0101] One scenario is: the first circuit 10 is always in use, that is, the wireless charging circuit is always in a charging scenario. When it is detected that an OTG device is inserted into the wired charging interface 201 in the second circuit 20, the charging status of the first circuit 10 and the second circuit 20 are detected to be turned on at the same time.

[0102] Another scenario is: the OTG device is inserted into the wired charging interface 201 in the second circuit 20, and the second circuit 20 is always in use, that is, the wired charging circuit is always in an OTG power supply scenario to the outside world. When it is detected that the wireless charging circuit is connected to wireless charging, the charging status of the first circuit 10 and the second circuit 20 are detected to be turned on at the same time.

[0103] In step S200, if yes, the output signal of the voltage reduction component is collected.

[0104] When detecting that the charging states of the first circuit 10 and the second circuit 20 are turned on at the same time, the control circuit 30 collects the output signal of the step-down component 40 , for example, collects the output voltage of the step-down component 40 .

[0105] In step S300, the output signal of the voltage reduction component is compared with a preset signal.

[0106] The output signal of the step-down component may be an output voltage, and the preset signal of the step-down component may be a preset voltage.

[0107] In the wireless charging scenario, the OTG power supply scenario is enabled at the same time, because the voltage of wireless charging may be 10V or 20V, and the voltage that the OTG device plugged into the wired reverse charging power supply interface can withstand may be 5V, and the voltage reduction component 40 is required for voltage division. Therefore, the output voltage of the voltage reduction component is usually greater than the preset voltage.

[0108] In step S400, if the output signal is greater than the preset signal, the voltage drop of the step-down component is adjusted to keep the output signal of the step-down component equal to the preset signal.

[0109] In the embodiments of the present disclosure, Figure 8 As shown, the charging states of the first circuit 10 and the second circuit 20 are detected and turned on at the same time. At this time, the first switch 102 and the second switch 103 are both in the on state. When the output voltage of the step-down component 40 is greater than the preset voltage, the control circuit 30 controls the first transistor 401 and the second transistor 402 to operate in the variable resistance zone A, and adjusts the voltage drop of the step-down component 40, so that a voltage difference is formed between the input voltage and the output voltage of the step-down component 40, thereby maintaining the output voltage of the step-down component 40 at a preset value, which can meet the common needs of the user for wireless charging and OTG power supply.

[0110] like Figure 8As shown, when the wireless charging and OTG power supply scenarios are used at the same time, when it is detected that the OTG device is unplugged from the wired charging interface 201 in the second circuit 20, the control circuit 30 controls the first transistor 401 and the second transistor 402 to be in the off state, and the first switch 102 and the second switch 103 are both in the on state. At this time, only the wireless charging circuit is in the charging scenario.

[0111] When wireless charging and OTG power supply are used at the same time, when it is detected that the wireless charging is disconnected, the control circuit 30 controls the first transistor 401 and the second transistor 402 to be in the on state, and the first switch 102 and the second switch 103 are both in the off state. At this time, only the wired charging circuit is in the OTG power supply scenario.

[0112] The present disclosure solves the problem of OTG power supply coexistence in the wireless fast charging scenario, and the insertion of the OTG device will not affect the speed of wireless charging. In addition, when wireless fast charging is in progress, the OTG device is inserted, and the wireless charging does not need to switch modes, and the charging will not be interrupted, which improves the user experience.

[0113] In some possible implementations, the charging method further includes:

[0114] If it is detected that the charging state of the first circuit 10 is turned on and the charging state of the second circuit 20 is turned off, the first circuit 10 is controlled to supply power to the battery through the control circuit 30 .

[0115] Among them, the first circuit 10 may be a wireless charging circuit, and the first charging state may be a wireless charging state; the second circuit 20 may be a wired charging circuit, and the second charging state may be an OTG power supply state to the outside world.

[0116] The first circuit 10 further includes a first switch 102 and a second switch 103 which are arranged in series back to back. Further, the first switch 102 and the second switch 103 are both transistors, and specifically, the first switch 102 and the second switch 103 can be metal oxide semiconductor field effect transistors.

[0117] The control circuit 30 may be a charge pump, which can realize fast charging of the battery 2 in a wireless fast charging scenario.

[0118] In the embodiment of the present disclosure, when the first charging state is turned on and the second charging state is turned off, that is, the wireless charging scenario is enabled and the OTG power supply scenario is turned off, the first circuit 10 can power the battery 2 through the control circuit 30. Further, the first circuit 10 can fast charge the battery 2 through the charge pump.

[0119] In some possible implementations, the wireless charging and OTG power supply compatible circuit further includes a third circuit 50, and the third circuit 50 is connected to the one end of the second circuit 20;

[0120] The charging method further comprises:

[0121] If it is detected that the charging state of the first circuit 10 is turned off and the charging state of the second circuit 20 is turned on, the third circuit 50 is controlled to supply power to the OTG device through the second circuit 20 .

[0122] Among them, the first circuit 10 may be a wireless charging circuit, and the first charging state may be a wireless charging state; the second circuit 20 may be a wired charging circuit, and the second charging state may be an OTG power supply state to the outside world.

[0123] The third circuit 50 may be a power management integrated circuit, Power Management IC, PMIC, which is used to manage the power supply device in the host system of the electronic device.

[0124] Regarding the method in the above embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment of the circuit, and will not be elaborated here.

[0125] In the embodiment of the present disclosure, when the first charging state is turned off and the second charging state is turned on, that is, when the wireless charging scenario is turned off and the OTG power supply scenario is turned on, the power management integrated circuit can supply power to the second circuit 20. Further, the power management integrated circuit supplies power to the external OTG through the second circuit 20. Figure 8 As shown, when wireless charging access is detected, the third circuit 50, i.e., the OTG power supply of the power management integrated circuit, is turned off, the control circuit 30 controls the first switch 102 and the second switch 103 to be in the on state, and keeps the output voltage of the step-down component 40 at a preset value to meet the user's common needs in both wireless charging and OTG power supply scenarios.

[0126] Based on the same inventive concept, according to a third aspect of the present disclosure, an electronic device is provided, comprising: a wireless charging and OTG power supply compatible circuit as in any implementation of the first aspect above.

[0127] It is understandable that the electronic device involved in the present disclosure may also be referred to as a terminal device, terminal, user equipment (UE), mobile station (MS), electronic device (MT), etc., which is a device that provides voice and / or data connectivity to users. For example, the electronic device may be a handheld device, a vehicle-mounted device, etc. with wireless charging and wired connection functions. At present, examples of electronic devices may include: a smart phone (MobilePhone), a pocket computer (Pocket Personal Computer, PPC), a handheld computer, a personal digital assistant (Personal Digital Assistant, PDA), a laptop computer, a tablet computer, a wearable device, or a vehicle-mounted device, etc. It should be understood that the embodiments of the present disclosure do not limit the specific technology and specific device form adopted by the electronic device.

[0128] Based on the same inventive concept, according to the fourth aspect of the present disclosure, there is provided an electronic device, comprising: a processor; a memory for storing processor executable instructions; wherein the processor is configured to: execute the method in any implementation of the second aspect above.

[0129] It is understandable that the electronic device provided by the embodiment of the present disclosure includes a hardware structure and / or software module corresponding to each function in order to realize the above functions. In combination with the units and algorithm steps of each example disclosed in the embodiment of the present disclosure, the embodiment of the present disclosure can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the technical solution of the embodiment of the present disclosure.

[0130] Based on the same inventive concept, according to the fifth aspect of the present disclosure, a storage medium is provided, in which instructions are stored. When the instructions in the storage medium are executed by a processor of a terminal, the terminal is enabled to execute the method in any implementation of the above-mentioned second aspect.

[0131] Fig. 9 8 is a block diagram of an electronic device 800 according to an exemplary embodiment. For example, the electronic device 800 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, etc.

[0132] Reference Fig. 9, the electronic device 800 may include one or more of the following components: a processing component 802 , a memory 804 , a power component 806 , a multimedia component 808 , an audio component 810 , an input / output (I / O) interface 812 , a sensor component 814 , and a communication component 816 .

[0133] The processing component 802 generally controls the overall operation of the electronic device 800, such as operations associated with display, phone calls, data communications, camera operations, and recording operations. The processing component 802 may include one or more processors 820 to execute instructions to complete all or part of the steps of the above-mentioned method. In addition, the processing component 802 may include one or more modules to facilitate the interaction between the processing component 802 and other components. For example, the processing component 802 may include a multimedia module to facilitate the interaction between the multimedia component 808 and the processing component 802.

[0134] The memory 804 is configured to store various types of data to support operations on the electronic device 800. Examples of such data include instructions for any application or method operating on the electronic device 800, contact data, phone book data, messages, pictures, videos, etc. The memory 804 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk.

[0135] The power component 806 provides power to the various components of the electronic device 800. The power component 806 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the electronic device 800.

[0136] The multimedia component 808 includes a screen that provides an output interface between the electronic device 800 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundaries of the touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 808 includes a front camera and / or a rear camera. When the electronic device 800 is in an operating mode, such as a shooting mode or a video mode, the front camera and / or the rear camera may receive external multimedia data. Each front camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.

[0137] The audio component 810 is configured to output and / or input audio signals. For example, the audio component 810 includes a microphone (MIC), and when the electronic device 800 is in an operating mode, such as a call mode, a recording mode, and a voice recognition mode, the microphone is configured to receive an external audio signal. The received audio signal can be further stored in the memory 804 or sent via the communication component 816. In some embodiments, the audio component 810 also includes a speaker for outputting audio signals.

[0138] I / O interface 812 provides an interface between processing component 802 and peripheral interface modules, such as keyboards, click wheels, buttons, etc. These buttons may include but are not limited to: home button, volume button, start button, and lock button.

[0139] The sensor assembly 814 includes one or more sensors for providing various aspects of status assessment for the electronic device 800. For example, the sensor assembly 814 can detect the open / closed state of the electronic device 800, the relative positioning of the components, such as the display and keypad of the electronic device 800, and the sensor assembly 814 can also detect the position change of the electronic device 800 or a component of the electronic device 800, the presence or absence of contact between the user and the electronic device 800, the orientation or acceleration / deceleration of the electronic device 800, and the temperature change of the electronic device 800. The sensor assembly 814 may include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor assembly 814 may also include an optical sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 814 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0140] The communication component 816 is configured to facilitate wired or wireless communication between the electronic device 800 and other devices. The electronic device 800 can access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 816 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 816 also includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.

[0141] In an exemplary embodiment, the electronic device 800 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to perform the above methods.

[0142] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 804 including instructions, and the instructions can be executed by a processor 820 of an electronic device 800 to perform the above method. For example, the non-transitory computer-readable storage medium can be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, etc.

[0143] It is to be understood that in the present disclosure, "plurality" refers to two or more than two, and other quantifiers are similar. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship. The singular forms "a", "the" and "the" are also intended to include plural forms, unless the context clearly indicates other meanings.

[0144] It is further understood that the terms "first", "second", etc. are used to describe various information, but such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other, and do not indicate a specific order or degree of importance. In fact, the expressions "first", "second", etc. can be used interchangeably. For example, without departing from the scope of the present disclosure, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as the first information.

[0145] It will be further understood that the terms “center”, “longitudinal”, “lateral”, “front”, “back”, “up”, “down”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present embodiment and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation.

[0146] It can be further understood that, unless otherwise specified, “connection” includes a direct connection without other components between the two, and also includes an indirect connection with other components between the two.

[0147] It is further understood that, although the operations are described in a specific order in the drawings in the embodiments of the present disclosure, it should not be understood as requiring the operations to be performed in the specific order shown or in a serial order, or requiring the execution of all the operations shown to obtain the desired results. In certain environments, multitasking and parallel processing may be advantageous.

[0148] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. The present disclosure is intended to cover any variations, uses or adaptations of the present disclosure, which follow the general principles of the present disclosure and include common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present disclosure are indicated by the following scope of rights.

[0149] It should be understood that the present disclosure is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the scope of the appended claims.

Claims

1. An electronic device, characterized in that: include: Wireless charging port; a first circuit connected to the wireless charging interface, the first circuit being used to receive energy through the wireless charging interface to charge the battery, and the first circuit being also used to power a first external device through the wireless charging interface; Wired charging port; a second circuit connected to the first circuit, the second circuit being connected to the wired charging interface, the second circuit being used to receive energy through the wired charging interface to charge the battery, and the second circuit being also used to power a second external device through the wired charging interface; a step-down component, wherein the step-down component is disposed on the second circuit, a first end of the step-down component is connected to the wired charging interface, and a second end of the step-down component is connected to the battery; A control circuit, wherein the control circuit is used to control the step-down component so that the voltage of the wired charging interface is within a preset voltage range when wireless charging is performed through the first circuit and power is supplied to a second external device through the second circuit.

2. The electronic device according to claim 1, characterized in that: The control circuit includes a charge pump, and the charge pump is connected to the first circuit and the second circuit. When the first circuit performs wireless charging and the second circuit supplies power to a second external device, the charge pump is used to control the step-down component to perform voltage division according to the working voltage required by the wired charging interface so that the voltage of the wired charging interface is within a preset voltage range.

3. The electronic device according to claim 2, characterized in that: The charge pump is also connected to a battery. In the case where the first circuit charges the battery, the first circuit wirelessly charges the battery through the charge pump; and / or, When the second circuit charges the battery, the second circuit performs wired charging for the battery through the charge pump.

4. The electronic device according to claim 2, characterized in that: The charge pump has a first pin and a second pin, the first pin is electrically connected to the step-down component, and the second pin is electrically connected to the wired charging interface. When the first circuit performs wireless charging and the second circuit supplies power to a second external device, the charge pump controls the step-down component through the first pin to perform voltage division based on the voltage of the wired charging interface collected by the second pin, so that the voltage of the wired charging interface is within a preset voltage range.

5. The electronic device according to claim 1, characterized in that: The step-down component includes a first transistor and a second transistor. When the first circuit performs wireless charging, the first transistor and the second transistor are in a non-cut-off state. The control circuit controls the first transistor and the second transistor to perform voltage division so that the voltage of the wired charging interface is within a preset voltage range.

6. The electronic device according to claim 5, characterized in that: The first transistor and the second transistor are arranged in series back to back.

7. The electronic device according to claim 2, characterized in that: The first circuit includes a switch component, and the switch component is connected between the wireless charging interface and the connection ends of the first circuit and the second circuit. When the first circuit is wirelessly charged, the control circuit controls the switch component to be in an on state so that the first circuit receives energy through the wireless charging interface to charge the battery, or the first circuit powers a first external device through the wireless charging interface.

8. The electronic device according to claim 7, characterized in that: The switch assembly includes a first switch and a second switch, When the first circuit is wirelessly charged, the control circuit controls the first switch and the second switch to be in an on state so that the first circuit receives energy through the wireless charging interface to charge the battery, or the first circuit powers a first external device through the wireless charging interface.

9. The electronic device according to claim 8, characterized in that: The first switch and the second switch are arranged back-to-back in series.

10. The electronic device according to claim 1, characterized in that: Also includes: a third circuit connected to the connection ends of the first circuit and the second circuit, In a case where the first circuit supplies power to the first external device, the third circuit supplies power to the first circuit; and / or, In a case where the second circuit supplies power to a second external device, the third circuit supplies power to the second circuit.

11. The electronic device according to claim 10, characterized in that: The third circuit is also connected to a battery. In the case where the first circuit charges the battery, the first circuit wirelessly charges the battery through the third circuit; and / or, When the second circuit charges the battery, the second circuit performs wired charging for the battery through the third circuit.

12. The electronic device according to claim 7, characterized in that: The charge pump has a third pin, and the third pin is electrically connected to the switch component. When the first circuit performs wireless charging, the charge pump controls the switch component to be turned on through the third pin to receive energy through the wireless charging interface to charge the battery, or to power a first external device through the wireless charging interface.

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