Receiver power supply switching circuit and electronic equipment

Abstract

The utility model discloses a receiver power supply switching circuit and electronic equipment, and belongs to the technical field of power supply. Under the condition that a contact is connected with a charging box, first power supply voltage output by the charging box is transmitted; under the condition that the first interface is connected to an external power supply, second power supply voltage output by the external power supply is transmitted; the charging management circuit outputs system voltage; the first switching circuit transmits system voltage according to the first power supply voltage or the second power supply voltage; the control circuit outputs an enable signal according to the system voltage; the second switch circuit transmits the first power supply voltage or the second power supply voltage to the control circuit according to the enable signal; the configuration module configures electronic components to form a power supply circuit for supplying power to the control circuit, and outputs a first output voltage; in addition, the control circuit enters a working state according to the first power supply voltage or the second power supply voltage or the first output voltage, multiple power supply modes are compatible, and the flexibility and convenience of power supply are improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of power supply, and particularly relates to a receiver power supply switching circuit and electronic equipment. BACKGROUND

[0002] In the process of creating films, television series, variety shows, interviews and video blogs, a wireless microphone system is often used. The wireless microphone system is composed of a transmitter, a receiver and a charging box. Specifically, the transmitter is responsible for capturing sound and modulating the sound signal, and then transmitting the sound signal to the receiver through a wireless manner. The receiver converts the sound signal into an audio signal and outputs it to a post-production device. However, in actual use, most existing wireless microphones directly use a USB interface to connect a power adapter for power supply, or use a charging box for power supply. The power supply mode is less flexible and inconvenient, which brings inconvenience to the use of the wireless microphone. CONTENT OF THE UTILITY MODEL

[0003] The application aims to provide a receiver power supply switching circuit and electronic equipment, and aims to solve the problem of less flexible and inconvenient power supply of the existing wireless microphone.

[0004] The application provides a receiver power supply switching circuit, which comprises:

[0005] A receiver power supply switching circuit comprises:

[0006] A contact is used to transmit a first power supply voltage output by a charging box when the charging box is connected;

[0007] A first interface is connected with the contact and is used to transmit a second power supply voltage output by an external power supply when the external power supply is connected;

[0008] A charging management circuit is connected with the contact and the first interface and is used to output a system voltage;

[0009] A first switch circuit is connected with the contact, the first interface and the charging management circuit and is used to transmit the system voltage according to the first power supply voltage or the second power supply voltage;

[0010] A control circuit is connected with the first switch circuit and is used to output an enable signal according to the system voltage;

[0011] A second switch circuit is connected with the contact, the first interface, the charging management circuit, the first switch circuit and the control circuit and is used to transmit the first power supply voltage or the second power supply voltage to the control circuit according to the enable signal;

[0012] The configuration module is configured to configure the electronic component to form a power supply circuit for supplying power to the control circuit and output a first output voltage.

[0013] The control circuit is further configured to enter a working state according to the first power supply voltage or the second power supply voltage or the first output voltage.

[0014] In one of the embodiments, the configuration module forms the first power supply circuit or the second power supply circuit.

[0015] In one of the embodiments, when the configuration module forms the first power supply circuit, the first power supply circuit comprises:

[0016] A Type-C interface connected with the first electronic device, configured to transmit a first connection state signal and a third power supply voltage output by the first electronic device;

[0017] A charging connection detection circuit connected with the Type-C interface, configured to output a first switch signal according to the first connection state signal under the excitation of the third power supply voltage;

[0018] A third switch circuit connected with the control circuit, the Type-C interface and the charging connection detection circuit, configured to output the third power supply voltage as the first output voltage according to the first switch signal.

[0019] In one of the embodiments, when the external power supply is connected and the configuration module forms the first power supply circuit, the first power supply circuit further comprises:

[0020] A fourth switch circuit connected with the Type-C interface, the third switch circuit, the first interface, the charging management circuit, the first switch circuit, the second switch circuit and the charging connection detection circuit, configured to transmit the second power supply voltage to the charging connection detection circuit and the third switch circuit;

[0021] The charging connection detection circuit is further configured to output the first switch signal and a second switch signal according to the first connection detection signal under the excitation of the second power supply voltage;

[0022] The third switch circuit is further configured to output the second power supply voltage as the first output voltage according to the first switch signal;

[0023] The fourth switch circuit is further configured to transmit the second power supply voltage to the Type-C interface according to the second switch signal.

[0024] In one of the embodiments, the control circuit is further configured to receive a radio signal and demodulate the radio signal into a first audio signal, and the Type-C interface is further connected to the control circuit and configured to transmit the first audio signal to the first electronic device.

[0025] In one of the embodiments, when the configuration module forms the second power supply circuit, the second power supply circuit comprises:

[0026] a Lightning interface connected to the second electronic device and configured to transmit a fourth power supply voltage output by the second electronic device;

[0027] a boost circuit connected to the control circuit and the Lightning interface and configured to boost the fourth power supply voltage to output the first output voltage.

[0028] In one of the embodiments, when the external power supply is connected and the configuration module forms the second power supply circuit, the first interface is connected to the Lightning interface, the Lightning interface is configured to transmit the second power supply voltage to the second electronic device and transmit the fourth power supply voltage to the boost circuit;

[0029] The second electronic device is charged according to the second power supply voltage;

[0030] The boost circuit is further configured to boost the fourth power supply voltage to output the first output voltage.

[0031] The control circuit is further configured to enter a working state according to the first output voltage.

[0032] In one of the embodiments, the control circuit is further configured to receive a radio signal and demodulate the radio signal into a second audio signal, and the Lightning interface is further connected to the control circuit and configured to transmit the second audio signal to the second electronic device.

[0033] In one of the embodiments, when the contact is connected to the charging case, the contact is configured to transmit a power-on carrier signal input by the charging case; the power-on carrier signal comprises the first power supply voltage and a power-on control signal.

[0034] The charging management circuit is further configured to stop outputting the system voltage for a first preset time period according to the power-on control signal.

[0035] The control circuit is further configured to be restarted according to the resumption of the system voltage and output the enable signal.

[0036] In one of the embodiments, the receiver power supply switching circuit further comprises:

[0037] The one-way conducting circuit is connected with the contact, the first interface, the first switch circuit, the second switch circuit and the charging management circuit, and is used for one-way conducting the second power supply voltage to output the second power supply voltage after one-way conducting;

[0038] The charging management circuit is used for outputting the system voltage;

[0039] The first switch circuit is specifically used for transmitting the system voltage according to the second power supply voltage after one-way conducting;

[0040] The control circuit is used for outputting the enable signal according to the system voltage;

[0041] The second switch circuit is also used for transmitting the second power supply voltage after one-way conducting to the control circuit according to the enable signal;

[0042] The control circuit is also used for entering a working state according to the second power supply voltage after one-way conducting.

[0043] In one of the embodiments, the charging management circuit is also used for outputting a charging voltage according to the first power supply voltage or the second power supply voltage;

[0044] The receiver power supply switching circuit further comprises:

[0045] The energy storage circuit is connected with the charging management circuit, and is used for charging according to the charging voltage and outputting a battery voltage;

[0046] The charging management circuit is specifically used for outputting the system voltage according to the battery voltage.

[0047] The embodiments of the present application further provide an electronic device, which comprises the receiver power supply switching circuit.

[0048] Compared with the prior art, the embodiments of the present application have the beneficial effects that the first power supply voltage output by the charging box is transmitted through the contact, the second power supply voltage output by the external power supply is transmitted through the first interface, different electronic components are configured by the configuration module to form a power supply circuit meeting the power supply requirement and output the first voltage, and the control circuit enters a working state according to the first power supply voltage or the second power supply voltage or the first output voltage, that is, multiple power supply interfaces are set to be compatible with multiple power supply modes, the required power supply mode can be selected according to the requirement in actual use, and the flexibility and convenience of power supply are improved. BRIEF DESCRIPTION OF DRAWINGS

[0049] In order to more clearly illustrate the technical application in the embodiments of the present application, the drawings needed to be used in the description of the embodiments will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort.

[0050] Figure 1 A structure diagram of a receiver power supply switching circuit provided by an embodiment of the present application;

[0051] Figure 2 Another structure diagram of a receiver power supply switching circuit provided by an embodiment of the present application;

[0052] Figure 3 Another structure diagram of a receiver power supply switching circuit provided by an embodiment of the present application;

[0053] Figure 4 Another structure diagram of a receiver power supply switching circuit provided by an embodiment of the present application;

[0054] Figure 5 Another structure diagram of a receiver power supply switching circuit provided by an embodiment of the present application;

[0055] Figure 6 Another structure diagram of a receiver power supply switching circuit provided by an embodiment of the present application;

[0056] Figure 7 Another structure diagram of a receiver power supply switching circuit provided by an embodiment of the present application;

[0057] Figure 8 Another structure diagram of a receiver power supply switching circuit provided by an embodiment of the present application;

[0058] Figure 9 Another structure diagram of a receiver power supply switching circuit provided by an embodiment of the present application;

[0059] Figure 10 A partial example circuit schematic diagram of a receiver power supply switching circuit provided by an embodiment of the present application. DETAILED DESCRIPTION

[0060] In order to make the technical problems, technical solutions and beneficial effects of the present application more clearly understood, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application.

[0061] It should be noted that when an element is referred to as being "fixed" or "set up" on another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0062] It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate directions or positions according to the directions or positions shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0063] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0064] Figure 1 The structure of the receiver power supply switching circuit provided by an embodiment of the present application is shown. For the convenience of description, only the parts related to the embodiment are shown, and the details are as follows:

[0065] The receiver power supply switching circuit includes a contact 10, a first interface 20, a charging management circuit 30, a first switching circuit 40, a control circuit 50, a second switching circuit 60, and a configuration module 70.

[0066] The contact 10 is used to transmit the first power supply voltage output by the charging box when the charging box is connected.

[0067] The first interface 20 is connected with the contact 10, and is used to transmit the second power supply voltage output by the external power supply when the external power supply is connected.

[0068] The charging management circuit 30 is connected with the contact 10 and the first interface 20, and is used to output a system voltage.

[0069] The first switching circuit 40 is connected with the contact 10, the first interface 20, and the charging management circuit 30, and is used to transmit the system voltage according to the first power supply voltage or the second power supply voltage.

[0070] The control circuit 50 is connected with the first switching circuit 40, and is used to output an enable signal according to the system voltage.

[0071] The second switch circuit 60 is connected with the contact 10, the first interface 20, the charging management circuit 30, the first switch circuit 40 and the control circuit 50, and is configured to transmit the first power supply voltage or the second power supply voltage to the control circuit 50 according to the enable signal.

[0072] The configuration module 70 is configured to configure electronic components to form a power supply circuit for supplying power to the control circuit 50 and output a first output voltage.

[0073] The control circuit 50 is further configured to enter a working state according to the first power supply voltage or the second power supply voltage or the first output voltage.

[0074] In specific implementation, the first interface 20 can be a common power adapter interface such as a Micro USB female seat, a Type-C female seat and a DC interface, which is not limited in the present application. The first interface 20 can be connected with an external power supply through a power adapter.

[0075] When the charging box is connected, the first power supply voltage output by the charging box is transmitted through the contact 10, the charging management circuit 30 outputs a system voltage to the first switch circuit 40, the first switch circuit 40 transmits the system voltage to the control circuit 50 according to the first power supply voltage, the control circuit 50 outputs an enable signal to the second switch circuit 60 according to the system voltage, the second switch circuit 60 transmits the first power supply voltage to the control circuit 50 for power supply according to the enable signal, and the control circuit 50 enters a working state according to the first power supply voltage.

[0076] When the external power supply is connected, the second power supply voltage output by the external power supply is transmitted through the first interface 20, the charging management circuit 30 outputs a system voltage to the first switch circuit 40, the first switch circuit 40 transmits the system voltage to the control circuit 50 according to the second power supply voltage, the control circuit 50 outputs an enable signal to the second switch circuit 60 according to the system voltage, the second switch circuit 60 transmits the second power supply voltage to the control circuit 50 for power supply according to the enable signal, and the control circuit 50 enters a working state according to the second power supply voltage.

[0077] The configuration module 70 is configured to configure electronic components to form a power supply circuit for supplying power to the control circuit 50 and output a first output voltage, and the control circuit 50 enters a working state according to the first output voltage.

[0078] By setting multiple power supply interfaces compatible with multiple power supply modes, the required power supply mode can be selected according to the demand in actual use, thereby improving the flexibility and convenience of power supply.

[0079] As an example but not limitation, the configuration module 70 forms a first power supply circuit 71 or a second power supply circuit 72.

[0080] Since the configuration module 70 can configure the power supply circuit according to different power supply requirements, in the case of needing to form the first power supply circuit 71 or needing to form the second power supply circuit 72 for power supply, a printed circuit board (PCB) designed according to the receiver power supply switching circuit can be used, and different electronic components can be configured to form the first power supply circuit 71 or the second power supply circuit 72 for power supply according to actual needs. Compared with designing and manufacturing two PCBs according to two different types of power supply requirements, by manufacturing a PCB designed according to the receiver power supply switching circuit, one PCB can meet the power supply requirements of two different types of power supply by configuring different electronic components in actual use, thereby saving the time of designing the PCB multiple times, and improving the compatibility, flexibility and convenience of the receiver power supply switching circuit.

[0081] By way of example, and not limitation, as Figure 2 illustrated, in the case of forming the first power supply circuit 71 by the configuration module 70, the first power supply circuit 71 includes a Type-C interface 711, a charging connection detection circuit 712, and a third switch circuit 713.

[0082] The Type-C interface 711 is connected with the first electronic device, and is used to transmit the first connection state signal and the third power supply voltage.

[0083] The charging connection detection circuit 712 is connected with the Type-C interface 711, and is used to output a first switch signal according to the first connection state signal under the excitation of the third power supply voltage.

[0084] The third switch circuit 713 is connected with the control circuit 50, the Type-C interface 711 and the charging connection detection circuit 712, and is used to output the third power supply voltage as the first output voltage according to the first switch signal.

[0085] In a specific implementation, the Type-C interface 711 can be a Type-C male head.

[0086] The charging connection detection circuit 712 detects the first connection state signal, which ensures that the third switch circuit 713 only outputs the first output voltage when the Type-C interface 711 is connected with the first electronic device, thereby reducing the possibility of misdirecting the third switch circuit 713.

[0087] The Type-C interface 711 enriches the interface type of the receiver power supply switching circuit, and improves the compatibility, flexibility and convenience of the power supply switching circuit.

[0088] By way of example, and not limitation, as Figure 3As shown, in the case that the access external power supply and the configuration module 70 forms the first power supply circuit 71, the first power supply circuit 71 further includes a fourth switch circuit 714.

[0089] The fourth switch circuit 714 is connected with the Type-C interface 711, the third switch circuit 713, the first interface 20, the charging management circuit 30, the first switch circuit 40, the second switch circuit 60 and the charging connection detection circuit 712, for transmitting the second power supply voltage to the charging connection detection circuit 712 and the third switch circuit 713.

[0090] The charging connection detection circuit 712 is further configured to output the first switch signal and the second switch signal according to the first connection detection signal under the excitation of the second power supply voltage.

[0091] The third switch circuit 713 is further configured to output the second power supply voltage as the first output voltage according to the first switch signal.

[0092] The fourth switch circuit 714 is further configured to transmit the second power supply voltage to the Type-C interface 711 according to the second switch signal.

[0093] In the case that the access external power supply and the configuration module 70 forms the first power supply circuit 71, the external power supply is realized to charge the first electronic device while supplying power to the control circuit 50, and the external power supply is automatically selected when the external power supply and the second electronic device exist at the same time, without the need for the user to manually switch between the two power supply modes, improving the convenience of use.

[0094] As an example but not limitation, as shown in Figure 4 The control circuit 50 is further configured to receive a wireless radio signal and demodulate it into a first audio signal, and the Type-C interface 711 is further connected with the control circuit 50, for transmitting the first audio signal to the first electronic device.

[0095] The control circuit 50 is further configured to receive a wireless radio signal and demodulate it into a first audio signal, and transmit the first audio signal to the first electronic device through the Type-C interface 711, realizing that the receiver applying the receiver power supply switching circuit is powered by the first output voltage, and can simultaneously output the first audio signal to the first electronic device, enriching the functions of the receiver power supply switching circuit.

[0096] As an example but not limitation, as shown in Figure 5 In the case that the configuration module 70 forms the second power supply circuit 72, the second power supply circuit 72 includes a Lightning interface 721 and a boost circuit 722.

[0097] The Lightning interface 721 is connected with the second electronic device, for transmitting a fourth power supply voltage.

[0098] The boost circuit 722 is connected with the control circuit 50 and the Lightning interface 721, and is configured to boost the fourth supply voltage to output a first output voltage.

[0099] In specific implementation, the Lightning interface 721 can be a Lightning male connector.

[0100] The boost circuit 722 boosts the fourth supply voltage to output the first output voltage, which expands the voltage application range of the second supply circuit 72 and improves the stability of the first output voltage.

[0101] The Lightning interface 721 increases the types of supply interfaces available for the receiver power supply switching circuit, further improving the compatibility, flexibility and convenience of the power supply switching circuit.

[0102] As an example but not limitation, as shown in FIG. 7, when the external power supply is connected and the configuration module 70 forms the second supply circuit 72, the first interface 20 and the Lightning interface 721 are connected, the Lightning interface 721 is configured to transmit the second supply voltage to the second electronic device and transmit the fourth supply voltage to the boost circuit 722. Figure 6

[0103] The second electronic device is charged according to the second supply voltage.

[0104] The boost circuit 722 is further configured to boost the fourth supply voltage to output the first output voltage.

[0105] The control circuit 50 is further configured to enter the working state according to the first output voltage.

[0106] It should be noted that in actual use, the second supply voltage and the first output voltage can both be 5V. Since the first output voltage is output by boosting the fourth supply voltage by the boost circuit 722, and the second supply voltage may be subject to certain loss during the process of supplying power to the receiver power supply switching circuit, the first output voltage is greater than or equal to the second supply voltage. Therefore, when the second supply voltage and the first output voltage exist at the same time, the control circuit 50 enters the working state according to the first output voltage, which realizes automatic selection of the first output voltage for power supply when the external power supply and the second electronic device exist at the same time, without the need for the user to manually switch between the two power supply modes, thereby improving the convenience of use.

[0107] As an example but not limitation, as shown in FIG. 7, the control circuit 50 is further configured to receive a radio signal and demodulate it into a second audio signal, and the Lightning interface 721 is further connected with the control circuit 50 and configured to transmit the second audio signal to the second electronic device. Figure 7 ​​

[0108] The control circuit 50 is further configured to receive a radio signal and demodulate the radio signal into a second audio signal, and transmit the second audio signal to the first electronic device through the Lightning interface 721, so that the receiver provided with the power supply switching circuit can be powered by the second output voltage, and the second audio signal can be output to the second electronic device at the same time, thereby improving the convenience of use of the user.

[0109] By way of example and not limitation, when the contact 10 is connected to the charging case, the contact 10 is configured to transmit a boot-up carrier signal input by the charging case; the boot-up carrier signal includes a first power supply voltage and a boot-up control signal.

[0110] The charging management circuit 30 is further configured to stop outputting the system voltage for a first preset time period according to the boot-up control signal.

[0111] The control circuit 50 is further configured to be restarted according to the resumption of the system voltage, and output an enable signal.

[0112] Here, the charging management circuit 30 inputs the boot-up control signal, and stops outputting the preset voltage for a first preset time period, and then outputs the system voltage to the first switch circuit 40 again, so that the control circuit 50 can be completely powered off, thereby realizing that the boot-up is from the shutdown state to the boot-up state, instead of from the soft shutdown state to the boot-up state, and omitting the reaction time of the backup file data of the control circuit 50, thereby improving the boot-up response speed.

[0113] As shown in Figure 8 The receiver power supply switching circuit further includes a unidirectional conduction circuit 80.

[0114] The unidirectional conduction circuit 80 is connected with the contact 10, the first interface 20, the first switch circuit 40, the second switch circuit 60 and the charging management circuit 30, and is configured to conduct the second power supply voltage in one direction to output the second power supply voltage after unidirectional conduction.

[0115] The charging management circuit 30 is configured to output a system voltage.

[0116] The first switch circuit 40 is specifically configured to transmit the system voltage according to the second power supply voltage after unidirectional conduction.

[0117] The control circuit 50 is configured to output an enable signal according to the system voltage.

[0118] The second switch circuit 60 is further configured to transmit the second power supply voltage after unidirectional conduction to the control circuit 50 according to the enable signal.

[0119] The control circuit 50 is further configured to enter a working state according to the second power supply voltage after unidirectional conduction.

[0120] The first supply voltage is prevented from flowing back to the external power supply through the unidirectional conduction circuit 80, thereby improving the safety of the receiver power supply switching circuit.

[0121] By way of example, and not limitation, as Figure 9 The charging management circuit 30 is further configured to output a charging voltage according to the first supply voltage or the second supply voltage.

[0122] The receiver power supply switching circuit further includes an energy storage circuit 90.

[0123] The energy storage circuit 90 is connected to the charging management circuit 30 and is configured to charge according to the charging voltage and output a battery voltage.

[0124] The charging management circuit 30 is specifically configured to output a system voltage according to the battery voltage.

[0125] The energy storage circuit 90 can include a battery.

[0126] The energy storage circuit 90 enables the normal operation of the receiver power supply switching circuit without an external power supply, thereby improving the portability of the receiver power supply switching circuit.

[0127] Figure 10 A partial example circuit structure of the receiver power supply switching circuit provided by the embodiments of the present application is shown, only the parts related to the embodiments of the present application are shown for ease of illustration, and are described in detail as follows:

[0128] The charging connection detection circuit 712 includes a communication chip U1, a third resistor R3, and a second capacitor C2.

[0129] The chip supply voltage end VDD of the communication chip U1 is connected to the third supply voltage input end of the charging connection detection circuit 712 and the second supply voltage input end of the charging connection detection circuit 712, and is connected to the fourth switch circuit 714 to input the third supply voltage and the second supply voltage; the first end of the third resistor R3 and the first end of the second capacitor C2 are connected together as the first connection state signal input end of the charging connection detection circuit 712, and are connected to the Type-C interface 711 to input the first connection state signal; the CCl channel level detection end CCl of the communication chip U1 is connected to the second end of the third resistor R3, and the power supply end ResetOut of the communication chip U1 for controlling the audio chip is connected as the first switch signal output end of the charging connection detection circuit 712 and is connected to the third switch circuit 713 to output the first switch signal; the VBUS enable end VBEN of the communication chip U1 is connected as the second switch signal output end of the charging connection detection circuit 712 and is connected to the fourth switch circuit 714 to output the second switch signal; and the second end of the second capacitor C2 is connected to the power supply ground.

[0130] The third switch circuit 713 includes a third field effect transistor Q3, a first diode D1, a fourth resistor R4, and a fifth resistor R5.

[0131] The source of the third field effect transistor Q3 is connected to the Type-C interface 711 and the fourth switch circuit 714 as a third supply voltage input terminal of the third switch circuit 713 and a second supply voltage input terminal of the third switch circuit 713, to input a third supply voltage and a second supply voltage; the first end of the fourth resistor R4 is connected to the charging connection detection circuit 712 as a first switch signal input terminal of the third switch circuit 713, to input a first switch signal; the second end of the fourth resistor R4, the first end of the fifth resistor R5, and the gate of the third field effect transistor Q3 are connected, the drain of the third field effect transistor Q3 and the anode of the first diode D1 are connected, and the cathode of the first diode D1 is a third supply voltage output terminal of the third switch circuit 713 and a second supply voltage output terminal of the third switch circuit 713, to output the third supply voltage and the second supply voltage; and the second end of the fifth resistor R5 is connected to a power supply ground.

[0132] The fourth switch circuit 714 includes a first field effect transistor Q1, a second field effect transistor Q2, a first resistor R1, a second resistor R2, and a first capacitor C1.

[0133] The drain of the second field effect transistor Q2 is connected to the Type-C interface 711 and the third switch circuit 713 as a third supply voltage input terminal of the fourth switch circuit 714 and a second supply voltage output terminal of the fourth switch circuit 714, to input a third supply voltage and output a second supply voltage; the source of the second field effect transistor Q2, the source of the first field effect transistor Q1, the first end of the first resistor R1, and the first end of the first capacitor C1 are collectively a third supply voltage output terminal of the fourth switch circuit 714 and a second supply voltage output terminal of the fourth switch circuit 714, to output the third supply voltage and the second supply voltage; the drain of the first field effect transistor Q1 is connected to the first interface 20 and the unidirectional conduction circuit 80 as a second supply voltage input terminal of the fourth switch circuit 714, to input a second supply voltage; the gate of the second field effect transistor Q2, the second end of the first resistor R1, and the first end of the second resistor R2 are collectively a second switch signal input terminal of the fourth switch circuit 714, and are connected to the charging connection detection circuit 712, to input a second switch signal; and the second end of the second resistor R2, the second end of the first capacitor C1, and the gate of the first field effect transistor Q1 are connected.

[0134] The boost circuit 722 includes a voltage converter U2 and a second diode D2.

[0135] The enable control input end EN of the voltage converter U2 and the input power supply end VIN of the voltage converter U2 are used as the fourth power supply voltage input end of the voltage boosting circuit 722, and are connected with the Lightning interface 721 to input the fourth power supply voltage; the voltage stabilizing output voltage end VOUT of the voltage converter U2 is connected with the anode of the second diode D2, and the cathode of the second diode D2 is used as the first output voltage output end of the voltage boosting circuit 722, and is connected with the control circuit 50 and the second switch circuit 60 to output the first output voltage.

[0136] The unidirectional conduction circuit 80 includes a third diode D3.

[0137] The anode of the third diode D3 is used as the second power supply voltage input end of the unidirectional conduction circuit 80, and is connected with the first interface 20 and the fourth switch circuit 714 to input the second power supply voltage; the cathode of the third diode D3 is used as the second power supply voltage output end after unidirectional conduction of the unidirectional conduction circuit 80, and is connected with the charge management circuit 30, the first switch circuit 40 and the second switch circuit 60 to output the second power supply voltage after unidirectional conduction.

[0138] The working principle of the charging device 700 is further described as follows: Figure 10

[0139] When the contact 10 is connected with the charging box, the charging box outputs the power-on carrier signal, the charge management circuit 30 stops outputting the system voltage for a first preset time length according to the power-on control signal, the first switch circuit 40 transmits the system voltage to the control circuit 50 according to the first power supply voltage, the control circuit 50 is restarted according to the recovery of the system voltage, and outputs the enable signal, the second switch circuit 60 transmits the first power supply voltage to the control circuit 50 for power supply according to the enable signal, and the control circuit 50 enters the working state according to the first power supply voltage; the charge management circuit 30 also outputs the charging voltage to the energy storage circuit 90 for charging according to the first power supply voltage.

[0140] When the external power supply is connected, the first interface 20 transmits the second power supply voltage to the charge management circuit 30, the first switch circuit 40 and the second switch circuit 60, the charge management circuit 30 outputs the charging voltage to the energy storage circuit 90 for charging according to the second power supply voltage, and also outputs the system voltage according to the battery voltage output by the energy storage circuit 90, the first switch circuit 40 transmits the system voltage to the control circuit 50 according to the second power supply voltage, the control circuit 50 outputs the enable signal according to the system voltage, the second switch circuit 60 transmits the second power supply voltage to the control circuit 50 according to the enable signal, and the control circuit 50 is also used for entering the working state according to the second power supply voltage.

[0141] ​In the case that the configuration module 70 forms the first power supply circuit 71, the first electronic device outputs the first connection state signal and the third power supply voltage, the Type-C interface 711 transmits the first connection state signal to the first end of the third resistor R3 and the first end of the second capacitor C2, and transmits the third power supply voltage to the chip power supply end VDD of the communication chip U1 and the drain of the third field effect tube Q3. Under the excitation of the third power supply voltage, the communication chip U1 outputs the first switch signal from the power supply end ResetOut of the communication chip U1 to the first end of the fourth resistor R4 according to the first connection state signal, the third field effect tube Q3 transmits the third power supply voltage according to the first switch signal, and outputs the third power supply voltage as the first output voltage to the control circuit 50 through the negative electrode of the first diode D1 for power supply, and the control circuit 50 enters the working state according to the first output voltage.

[0142] In the case that the configuration module 70 forms the second power supply circuit 72, the second electronic device outputs the fourth power supply voltage, and the Lightning interface 721 transmits the fourth power supply voltage to the enable control input end EN of the voltage converter U2 and the input power supply end VIN of the voltage converter U2. The voltage converter U2 boosts the fourth power supply voltage, and outputs the first output voltage to the control circuit 50 through the negative electrode of the second diode D2, and the control circuit 50 enters the working state according to the first output voltage.

[0143] In the case that the configuration module 70 forms the first power supply circuit 71, the first interface 20 transmits the second power supply voltage to the charging management circuit 30 and the drain of the first field effect tube Q1, the first field effect tube Q1 is turned on, the second power supply voltage is output from the source of the first field effect tube Q1 to the chip power supply end VDD of the communication chip U1, the first electronic device outputs the first connection detection signal, the communication chip U1 outputs the second switch signal from the VBUS enable end VBEN of the communication chip U1 to the gate of the second field effect tube Q2, the second end of the first resistor R1 and the first end of the second resistor R2 according to the first connection detection signal under the excitation of the second power supply voltage, and outputs the first switch signal from the power supply end ResetOut of the communication chip U1 to the first end of the fourth resistor R4, the second field effect tube Q2 is turned on, the second power supply voltage is output from the drain of the second field effect tube Q2 to the Type-C interface 711 and the source of the third field effect tube Q3, the first electronic device is charged according to the second power supply voltage, the third field effect tube Q3 is turned on, the second power supply voltage is output from the negative electrode of the first diode D1 to the control circuit 50 for power supply, and the control circuit 50 enters the working state according to the second power supply voltage; the charging management circuit 30 is also used for outputting the charging voltage according to the second power supply voltage, and the energy storage circuit 90 is charged according to the charging voltage.

[0144] In the case that the external power supply is connected and the module 70 forms the second power supply circuit 72, the external power supply outputs a second power supply voltage, the first interface 20 transmits the second power supply voltage to the charging management circuit 30 and the Lightning interface 721, the charging management circuit 30 outputs a charging voltage according to the second power supply voltage, and the energy storage circuit 90 charges according to the charging voltage; the Lightning interface 721 transmits the second power supply voltage to the second electronic device for charging, and the second electronic device also outputs a fourth power supply voltage to the Lightning interface 721, the Lightning interface 721 transmits the fourth power supply voltage to the enable control input end EN of the voltage converter U2 and the input power supply end VIN of the voltage converter U2, the voltage converter U2 boosts the fourth power supply voltage, and outputs a first output voltage to the control circuit 50 through the cathode of the second diode D2, and the control circuit 50 enters a working state according to the first output voltage.

[0145] The embodiments of the present application also provide an electronic device, which comprises the receiver power supply switching circuit.

[0146] It should be understood that the size of the serial number of each step in the above-mentioned embodiments does not mean the order of execution, and the execution order of each process should be determined according to its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0147] The above-described embodiments are only used to illustrate the technical solutions of the present application, but not limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements for some technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the present application.

Claims

1. A receiver powered power supply switching circuit, characterized by, The application relates to a first electronic device, comprising: a contact for transmitting a first power supply voltage output by a charging box when the charging box is connected; a first interface connected with the contact for transmitting a second power supply voltage output by an external power supply when the external power supply is connected; a charging management circuit connected with the contact and the first interface for outputting a system voltage; a first switch circuit connected with the contact, the first interface and the charging management circuit for transmitting the system voltage according to the first power supply voltage or the second power supply voltage; a control circuit connected with the first switch circuit for outputting an enable signal according to the system voltage; a second switch circuit connected with the contact, the first interface, the charging management circuit, the first switch circuit and the control circuit for transmitting the first power supply voltage or the second power supply voltage to the control circuit according to the enable signal; a configuration module for configuring electronic components to form a power supply circuit for supplying power to the control circuit and outputting a first output voltage; the control circuit is further configured to enter a working state according to the first power supply voltage or the second power supply voltage or the first output voltage.

2. The receiver-powered power supply switching circuit of claim 1, wherein, The configuration module forms a first power supply circuit or a second power supply circuit.

3. The receiver-powered power supply switching circuit of claim 2, wherein, When the configuration module forms the first power supply circuit, the first power supply circuit comprises: a Type-C interface connected with a first electronic device for transmitting a first connection state signal and a third power supply voltage output by the first electronic device; a charging connection detection circuit connected with the Type-C interface for outputting a first switch signal according to the first connection state signal under the excitation of the third power supply voltage; a third switch circuit connected with the control circuit, the Type-C interface and the charging connection detection circuit for outputting the third power supply voltage as the first output voltage according to the first switch signal.

4. The receiver-powered power supply switching circuit of claim 3, wherein, When the external power supply is connected and the configuration module forms the first power supply circuit, the first power supply circuit further comprises: a fourth switch circuit connected with the Type-C interface, the third switch circuit, the first interface, the charging management circuit, the first switch circuit, the second switch circuit and the charging connection detection circuit for transmitting the second power supply voltage to the charging connection detection circuit and the third switch circuit; the charging connection detection circuit is further configured to output the first switch signal and a second switch signal according to a first connection detection signal under the excitation of the second power supply voltage; the third switch circuit is further configured to output the second power supply voltage as the first output voltage according to the first switch signal; the fourth switch circuit is further configured to transmit the second power supply voltage to the Type-C interface according to the second switch signal.

5. The receiver-powered power supply switching circuit of claim 4, wherein, The control circuit is further configured to receive a wireless signal and demodulate the wireless signal into a first audio signal, and the Type-C interface is further connected with the control circuit for transmitting the first audio signal to the first electronic device.

6. The receiver-powered power supply switching circuit of claim 2, wherein, In a case that the configuration module forms the second power supply circuit, the second power supply circuit comprises: a Lightning interface connected with the second electronic device, configured to transmit a fourth power supply voltage output by the second electronic device; a boost circuit connected with the control circuit and the Lightning interface, configured to boost the fourth power supply voltage to output the first output voltage.

7. The receiver-powered power supply switching circuit of claim 6, wherein, In a case that the external power supply is accessed and the configuration module forms the second power supply circuit, the first interface and the Lightning interface are connected, the Lightning interface is configured to transmit the second power supply voltage to the second electronic device and transmit the fourth power supply voltage to the boost circuit; the second electronic device is charged according to the second power supply voltage; the boost circuit is further configured to boost the fourth power supply voltage to output the first output voltage; the control circuit is further configured to enter a working state according to the first output voltage.

8. The receiver-powered power supply switching circuit of Claim 7, wherein, the control circuit is further configured to receive a radio signal and demodulate the radio signal into a second audio signal, and the Lightning interface is further connected with the control circuit, configured to transmit the second audio signal to the second electronic device.

9. The receiver-powered power supply switching circuit of Claim 1, wherein, In a case that the contact is connected with the charging case, the contact is configured to transmit a power-on carrier signal input by the charging case; the power-on carrier signal comprises the first power supply voltage and a power-on control signal; the charging management circuit is further configured to stop outputting the system voltage for a first preset time length according to the power-on control signal; the control circuit is further configured to restart power-on according to the recovery of the system voltage and output the enable signal.

10. The receiver-powered power supply switching circuit of claim 1, wherein, Further comprising: a unidirectional conduction circuit connected with the contact, the first interface, the first switch circuit, the second switch circuit and the charging management circuit, configured to conduct the second power supply voltage unidirectionally to output the second power supply voltage after unidirectional conduction; the charging management circuit is configured to output the system voltage; the first switch circuit is specifically configured to transmit the system voltage according to the second power supply voltage after unidirectional conduction; the control circuit is configured to output the enable signal according to the system voltage; the second switch circuit is further configured to transmit the second power supply voltage after unidirectional conduction to the control circuit according to the enable signal; the control circuit is further configured to enter a working state according to the second power supply voltage after unidirectional conduction.

11. A receiver powered power supply switching circuit as claimed in any one of claims 1 to 10, wherein, the charging management circuit is further configured to output a charging voltage according to the first power supply voltage or the second power supply voltage; the receiver power supply switching circuit further comprises: an energy storage circuit connected with the charging management circuit, configured to charge according to the charging voltage and output a battery voltage; the charging management circuit is specifically configured to output the system voltage according to the battery voltage.

12. An electronic device, comprising: The receiver power supply switching circuit comprises any one of claims 1 to 11. The receiver power supply switching circuit comprises any one of claims 1 to 11.

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