Adapter circuit and adapter wire

Abstract

The utility model provides a switching circuit and a switching line, and relates to the technical field of electronic circuits. In the switching circuit, the output end of a first circuit and the first end of a second circuit are connected with a first interface, and the first interface comprises a type-c interface; the input end of the first circuit is connected with a charging object and used for transmitting electric energy of the charging object to a target object connected with the first interface, and the target object comprises a mobile terminal; and the second circuit is used for sending a power supply signal to the target object when detecting that the first circuit transmits electric energy, so that the target object supplies power and transmits data through the second circuit. According to the embodiment of the invention, the charged target object can execute power supply and data transmission operations while being charged, so that the target object can supply power and transmit data to equipment connected with the target object at any time, and the use experience of a user is improved.

Description

Technical Field

[0001] The present application relates to the technical field of electronic circuits, and in particular to a switching circuit and a switching line. Background Art

[0002] With the continuous development of science and technology, people's mobile terminals are becoming more and more intelligent. People can receive emails, browse web pages, etc. on mobile terminals. Mobile terminals have become an inseparable part of people's social life.

[0003] When people use mobile terminals, they often connect them to other devices (such as portable WiFi) for their own needs or the need to expand functions, and use the power supply of the mobile terminal to ensure the normal operation of the powered device and data transmission with the mobile terminal. Since mobile terminals are often miniaturized in design and have small battery capacity, they need to be charged frequently. However, the interface used for charging and discharging on the mobile terminal is the same interface, which means that the mobile terminal cannot supply power to other devices and transmit data when charging, so that the charging and discharging of the mobile terminal can only be done separately, which reduces the user experience. Utility Model Content

[0004] The embodiment of the present application provides a switching circuit and a switching cable, which can solve the problem that the existing mobile terminal cannot supply power to other devices and transmit data when charging, so that charging and discharging can only be performed separately, and the user experience is poor. To achieve this purpose, the embodiment of the present application provides the following solutions.

[0005] According to one aspect of an embodiment of the present application, a switching circuit is provided, including: a first circuit, a second circuit and a first interface, wherein an output end of the first circuit and a first end of the second circuit are connected to the first interface, and the first interface includes a type-c interface;

[0006] The input end of the first circuit is connected to a charging object, and is used to transmit the electric energy of the charging object to a target object connected to the first interface, wherein the target object includes a mobile terminal;

[0007] The second circuit is used for sending a signal to the target object to enable the target object to supply power to the second circuit and transmit data when detecting that the first circuit transmits electric energy.

[0008] In a possible implementation, the device further includes a second interface and a third interface, wherein the second interface is connected to the input end of the first circuit, and the third interface is connected to the second end of the second circuit.

[0009] In one possible implementation, the second interface includes a charging control circuit, which includes a fifth resistor and a sixth resistor, the second end of the fifth resistor and the second end of the sixth resistor are grounded, the first end of the fifth resistor is connected to the second connection confirmation pin of the second interface, and the first end of the sixth resistor is connected to the first connection confirmation pin of the second interface.

[0010] In one possible implementation, the first circuit includes a first field effect transistor, a second field effect transistor, a third resistor, a fourth resistor and a first capacitor, the drain of the first field effect transistor is connected to the first interface, the gate of the first field effect transistor is connected to the first end of the third resistor, the first end of the fourth resistor and the second circuit, the source of the first field effect transistor is connected to the second end of the third resistor, the first end of the first capacitor and the source of the second field effect transistor, the second end of the fourth resistor is connected to the second end of the first capacitor and the gate of the second field effect transistor, and the drain of the second field effect transistor is connected to the second interface.

[0011] In a possible implementation, the second circuit includes a protocol chip, a charger detection pin of the protocol chip is connected to the charging control circuit, and a charging control pin of the protocol chip is connected to the gate of the first field effect transistor.

[0012] In a possible implementation, the second circuit also includes a seventh resistor, a third capacitor and a second capacitor, the first end of the seventh resistor is connected to the charging object, the second end is connected to the first end of the third capacitor and the protocol chip, the second end of the third capacitor is grounded and connected to the first end of the second capacitor, and the second end of the second capacitor is connected to the protocol chip.

[0013] In a possible implementation, the second circuit also includes a ninth resistor, a tenth resistor and a fourth capacitor, the second end of the ninth resistor is connected to the first end of the fourth capacitor and the protocol chip, the second end of the fourth capacitor is grounded and connected to the second end of the tenth resistor, and the first end of the ninth resistor and the first end of the tenth resistor are correspondingly connected to the first connection confirmation pin and the second connection confirmation pin of the first interface.

[0014] In a possible implementation, the second circuit also includes a third field effect transistor and an eighth resistor, the source of the third field effect transistor is connected to the first interface, the gate of the third field effect transistor is connected to the first end of the eighth resistor and the protocol chip, the second end of the eighth resistor is grounded, and the drain of the third field effect transistor is connected to the voltage pin of the protocol chip.

[0015] In one possible implementation, the charging control circuit also includes a voltage detection circuit, which includes a first resistor and a second resistor, wherein the first end of the first resistor is connected to the first circuit and the power supply pin of the first interface, the second end of the first resistor is connected to the second circuit and the first end of the second resistor, and the first end of the second resistor is grounded and connected to the ground end of the second interface.

[0016] According to one aspect of an embodiment of the present application, a switching cable is provided, wherein the switching cable includes the switching circuit as described above.

[0017] The beneficial effects of the technical solution provided by the embodiment of the present application are:

[0018] The output end of the first circuit and the first end of the second circuit in the adapter circuit provided by the present application are connected to the first interface, and the first interface includes a type-c interface; the input end of the first circuit is connected to the charging object, and is used to transmit the electric energy of the charging object to the target object connected to the first interface; the second circuit is used to send a power supply signal to the target object when detecting that the first circuit transmits electric energy, so that the target object supplies power to the second circuit and transmits data to the target object through the first interface or transmits data sent by the target object. The embodiment of the present application enables the charged target object to perform power supply and data transmission operations while charging, ensures that the device connected to the target object works normally, and improves the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following is a brief introduction to the drawings required for use in describing the embodiments of the present application.

[0020] Figure 1 A structural diagram of a switching circuit provided in an embodiment of the present application;

[0021] Figure 2 A circuit diagram of the first interface provided by this application;

[0022] Figure 3 A circuit diagram of a first circuit, a charging control circuit, and a second interface provided in an embodiment of the present application;

[0023] Figure 4 A circuit diagram of a second circuit provided in an embodiment of the present application;

[0024] Figure 5 A circuit diagram of a third interface provided in an embodiment of the present application;

[0025] Figure 6 A structural diagram of the adapter cable provided in an embodiment of the present application.

[0026] Reference numerals: J1, first interface; J2, second interface; J3, third interface;

[0027] R1, first resistor; R2, second resistor; R3, third resistor; R4, fourth resistor; R5, fifth resistor; R6, sixth resistor; R7, seventh resistor; R8, eighth resistor; R9, ninth resistor; R10, tenth resistor;

[0028] Q1, a first field effect transistor; Q2, a second field effect transistor; Q3, a third field effect transistor;

[0029] C1, first capacitor; C2, second capacitor; C3, third capacitor; C4, fourth capacitor. DETAILED DESCRIPTION

[0030] The embodiments of the present application are described below in conjunction with the drawings in the present application. It should be understood that the implementation methods described below in conjunction with the drawings are exemplary descriptions for explaining the technical solutions of the embodiments of the present application and do not constitute a limitation on the technical solutions of the embodiments of the present application.

[0031] It will be understood by those skilled in the art that, unless specifically stated, the singular forms "one", "said", and "the" used herein may also include plural forms. It should be further understood that the terms "including" and "comprising" used in the embodiments of the present application refer to that the corresponding features can be implemented as the presented features, information, data, steps, operations, elements and / or components, but do not exclude the implementation of other features, information, data, steps, operations, elements, components and / or combinations thereof supported by the present technical field. It should be understood that when we say that an element is "connected" or "coupled" to another element, the one element may be directly connected or coupled to the other element, or it may refer to that the one element and the other element establish a connection relationship through an intermediate element. In addition, the "connection" or "coupling" used herein may include wireless connection or wireless coupling. The term "and / or" used herein indicates at least one of the items defined by the term, for example, "A and / or B" indicates that it is implemented as "A", or is implemented as "A", or is implemented as "A and B".

[0032] In order to make the purpose, technical solutions and advantages of the present invention more clear, the implementation methods of the present invention will be further described in detail below with reference to the accompanying drawings.

[0033] The following describes several exemplary embodiments to illustrate the technical solutions of the embodiments of the utility model and the technical effects produced by the technical solutions of the utility model. It should be noted that the following embodiments can refer to, draw on or combine with each other, and the same terms, similar features and similar implementation steps in different embodiments will not be described repeatedly.

[0034] The switching circuit and switching line provided in the present application are intended to solve at least one technical problem existing in the prior art.

[0035] In an embodiment of the present application, a switching circuit is provided, which is used to transmit the electric energy of a charging object to a target object, and transmit the electric energy transmitted by the target object to other devices external to the target object.

[0036] Optionally, the target object may be a mobile phone, a tablet computer, a laptop computer, or other objects that can be charged and connected to external devices.

[0037] Alternatively, if Figure 1-Figure 5 As shown, the transfer circuit includes a first circuit, a second circuit and a first interface J1, the output end of the first circuit and the first end of the second circuit are connected to the first interface J1, and the first interface J1 includes a type-c interface; the input end of the first circuit is connected to the charging object, and is used to transmit the electric energy of the charging object to the target object connected to the first interface J1, and the target object includes a mobile terminal; the second circuit is used to send a power supply signal to the target object when it is detected that the first circuit is transmitting electric energy, so that the target object supplies power to the second circuit and transmits data.

[0038] Optionally, the second end of the second circuit is connected to an external device of the target object, and the external device may be a portable WiFi, a hard disk, a speaker, or other devices that can be powered by the target object. The target object may also perform data transmission with the external device through the second circuit.

[0039] Optionally, the switching circuit further includes a second interface J2 and a third interface J3, the second interface J2 is connected to the input end of the first circuit, and the third interface J3 is connected to the second end of the second circuit.

[0040] In one embodiment, the first interface J1, the second interface J2 and the third interface J3 are all type-c interfaces, specifically, the first interface J1 can be a type-c male connector, and the second interface J2 can be a type-c female connector. The first interface J1, the second interface J2 and the third interface J3 can also be other interfaces that can be charged and discharged at the same time.

[0041] Alternatively, if Figure 2 As shown, Figure 3 As shown, the second interface J2 includes a charging control circuit, which includes a fifth resistor R5 and a sixth resistor R6, the second end of the fifth resistor R5 and the second end of the sixth resistor R6 are grounded, the first end of the fifth resistor R5 is connected to the second connection confirmation pin of the second interface J2, and the first end of the sixth resistor R6 is connected to the first connection confirmation pin of the second interface J2.

[0042] In one embodiment, pins A5 and B5 of the first interface J1 are OTG control pins, and pins A6, A7, B6, and B7 are protocol signal pins.

[0043] Optionally, the first connection confirmation pin and the second connection confirmation pin may be connected to a charging object. Furthermore, the charging object outputs a charging voltage corresponding to the target object through the action of the fifth resistor R5 and the sixth resistor R6.

[0044] In one embodiment, the charging voltage is 5V, the target object is a mobile phone, and the charging object is a mobile phone charger.

[0045] Alternatively, if Figure 3 As shown, the first circuit includes a first field effect transistor Q1, a second field effect transistor Q2, a third resistor R3, a fourth resistor R4 and a first capacitor C1, the drain of the first field effect transistor Q1 is connected to the first interface J1, the gate of the first field effect transistor Q1 is connected to the first end of the third resistor R3, the first end of the fourth resistor R4 and the second circuit, the source of the first field effect transistor Q1 is connected to the second end of the third resistor R3, the first end of the first capacitor C1 and the source of the second field effect transistor Q2, the second end of the fourth resistor R4 is connected to the second end of the first capacitor C1 and the gate of the second field effect transistor Q2, and the drain of the second field effect transistor Q2 is connected to the second interface J2.

[0046] In one embodiment, the power supply pin (pin A4) of the second interface J2 is connected to the drain of the second field effect transistor Q2. The first field effect transistor Q1 and the second field effect transistor Q2 are turned on and off based on the control signal of the second circuit. When the second circuit detects that a charging object is connected, it sends a signal to control the first field effect transistor Q1 and the second field effect transistor Q2 to turn on, so that the DC voltage output by the charging object is transmitted to the first interface J1 through the first circuit.

[0047] Optionally, the second circuit includes a protocol chip, a charger detection pin of the protocol chip is connected to the charging control circuit, and a charging control pin of the protocol chip is connected to the gate of the first field effect transistor Q1. The type of the protocol chip can be determined according to the charging object and the interface protocol used by the target object.

[0048] In one embodiment, the first interface J1 is a type-c interface, and the protocol chip is a chip designed for PD communication specifically for the Bridge device in the type-c standard. The chip can be LDR6328, XPD720BP, and other types of chips corresponding to the communication protocol of the first interface J1. When the protocol chip detects that the charger is connected through the charger detection pin, it sends a conduction signal to the first field effect transistor Q1 and the second field effect transistor Q2 through the charging control pin to control the first field effect transistor Q1 and the second field effect transistor Q2 to be turned on.

[0049] Alternatively, if Figure 4 As shown, the second circuit also includes a seventh resistor R7, a third capacitor C3 and a second capacitor C2, the first end of the seventh resistor R7 is connected to the charging object, the second end is connected to the first end of the third capacitor C3 and the protocol chip, the second end of the third capacitor C3 is grounded and connected to the first end of the second capacitor C2, and the second end of the second capacitor C2 is connected to the protocol chip. Among them, the seventh resistor R7, the third capacitor C3 and the second capacitor C2 form a filter circuit, through which the electrical signal transmitted by the charging object is filtered.

[0050] Optionally, the second circuit further includes a ninth resistor R9, a tenth resistor R10, and a fourth capacitor C4, the second end of the ninth resistor R9 is connected to the first end of the fourth capacitor C4 and the protocol chip, the second end of the fourth capacitor C4 is grounded and connected to the second end of the tenth resistor R10, and the first end of the ninth resistor R9 and the first end of the tenth resistor R10 are correspondingly connected to the first connection confirmation pin and the second connection confirmation pin of the first interface J1. Among them, the ninth resistor R9, the tenth resistor R10, the fourth capacitor C4, and the first interface J1 constitute an OTG circuit, which is used to send a signal indicating that the target object is powered on to the target object, and the signal can be an OTG signal, and the target object can also transmit data through the second circuit while being powered on.

[0051] Optionally, the second circuit further includes a third field effect transistor Q3 and an eighth resistor R8, the source of the third field effect transistor Q3 is connected to the first interface J1, the gate of the third field effect transistor Q3 is connected to the first end of the eighth resistor R8 and the protocol chip, the second end of the eighth resistor R8 is grounded, and the drain of the third field effect transistor Q3 is connected to the voltage pin of the protocol chip. The protocol chip sends an instruction to the first interface J1 through the third field effect transistor Q3, and uses the instruction to manage the on and off of the second circuit.

[0052] In one embodiment, when the charger detection pin (pin 7) of the protocol chip detects that a charging object is inserted (i.e., the second interface J2 is connected to the charging object), the pin 8 of the protocol chip sends an instruction to turn on the first field effect transistor Q1 and the second field effect transistor Q2, so that the 5V voltage output by the charging object is transmitted to the target object through the first field effect transistor Q1 and the second field effect transistor Q2. Pin 6 of the protocol chip sends a signal to control the conduction of the third field effect transistor Q3, so that the DC power output by the target object is transmitted to the second circuit through the third field effect transistor Q3 to the first interface J1. Pin 3 of the protocol chip outputs a signal that induces the mobile phone to power the device end connected to the second circuit.

[0053] Optionally, the charging control circuit also includes a voltage detection circuit, which includes a first resistor R1 and a second resistor R2. The first end of the first resistor R1 is connected to the first circuit and the power supply pin of the first interface J1, the second end of the first resistor R1 is connected to the second circuit and the first end of the second resistor R2, and the first end of the second resistor R2 is grounded and connected to the ground end of the second interface J2.

[0054] In one embodiment, the pin 7 of the protocol chip is connected to the second end of the first resistor R1, and the protocol chip detects whether a charging object is inserted (i.e., the charging object is powered) through the pin 7. In addition, the second interface J2 can also detect whether the current charging voltage exceeds a predetermined voltage (such as 5V voltage) through the pin 7, thereby preventing the charging voltage from being too high.

[0055] Optionally, the power supply pin of the third interface J3 supplies power to the object connected to the third interface J3. In addition, the third interface J3 is also provided with a data transmission pin, and the object connected to the third interface J3 performs data transmission with the target object through the data transmission pin.

[0056] In one embodiment, Figure 5 As shown, the data transmission pins of the third interface J3 are CONN-USB-A_D0_P and CONN-USB-A_D0_N.

[0057] In the transfer circuit of the embodiment of the present application, the output end of the first circuit and the first end of the second circuit are connected to the first interface, and the first interface includes a type-c interface; the input end of the first circuit is connected to the charging object, and is used to transmit the electric energy of the charging object to the target object connected to the first interface; the second circuit is used to send a power supply signal to the target object when detecting that the first circuit transmits electric energy, so that the target object supplies power to the second circuit and transmits data to the target object through the first interface or transmits data sent by the target object. The embodiment of the present application enables the charged target object to perform power supply and data transmission operations while charging, ensures the normal operation of the device connected to the target object, and improves the user experience.

[0058] According to one aspect of the embodiments of the present application, a patch cord is provided, such as Figure 6 As shown, the adapter cable includes the adapter cable as described in the above embodiment.

[0059] The terms "first", "second", "third", "fourth", "1", "2", etc. (if any) in the specification and claims of this application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than that shown or described in the drawings.

[0060] It should be understood that, although each operation step is indicated by arrows in the flowchart of the embodiment of the present application, the implementation order of these steps is not limited to the order indicated by the arrows. Unless clearly stated herein, in some implementation scenarios of the embodiment of the present application, the implementation steps in each flowchart can be performed in other orders according to demand. In addition, some or all of the steps in each flowchart may include multiple sub-steps or multiple stages based on actual implementation scenarios. Some or all of these sub-steps or stages may be executed at the same time, and each sub-step or stage in these sub-steps or stages may also be executed at different times respectively. In different scenarios of execution time, the execution order of these sub-steps or stages may be flexibly configured according to demand, and the embodiment of the present application does not limit this.

[0061] The above is only an optional implementation method for some implementation scenarios of the present application. It should be pointed out that for ordinary technicians in this technical field, without departing from the technical concept of the solution of the present application, other similar implementation methods based on the technical ideas of the present application are also within the protection scope of the embodiments of the present application.

Claims

1. A switching circuit, characterized in that: include: A first circuit, a second circuit and a first interface, wherein an output end of the first circuit and a first end of the second circuit are connected to the first interface, and the first interface comprises a Type-C interface; The input end of the first circuit is connected to a charging object, and is used to transmit the electric energy of the charging object to a target object connected to the first interface, wherein the target object includes a mobile terminal; The second circuit is used for sending a signal to the target object to enable the target object to supply power to the second circuit and transmit data when detecting that the first circuit transmits electric energy.

2. The switching circuit according to claim 1, characterized in that: It also includes a second interface and a third interface, wherein the second interface is connected to the input end of the first circuit, and the third interface is connected to the second end of the second circuit.

3. The switching circuit according to claim 2, characterized in that: The first circuit includes a charging control circuit, which includes a fifth resistor and a sixth resistor, the second end of the fifth resistor and the second end of the sixth resistor are grounded, the first end of the fifth resistor is connected to the second connection confirmation pin of the second interface, and the first end of the sixth resistor is connected to the first connection confirmation pin of the second interface.

4. The switching circuit according to claim 3, characterized in that: The first circuit includes a first field effect transistor, a second field effect transistor, a third resistor, a fourth resistor and a first capacitor, the drain of the first field effect transistor is connected to the first interface, the gate of the first field effect transistor is connected to the first end of the third resistor, the first end of the fourth resistor and the second circuit, the source of the first field effect transistor is connected to the second end of the third resistor, the first end of the first capacitor and the source of the second field effect transistor, the second end of the fourth resistor is connected to the second end of the first capacitor and the gate of the second field effect transistor, and the drain of the second field effect transistor is connected to the second interface.

5. The switching circuit according to claim 4, characterized in that: The second circuit includes a protocol chip, a charger detection pin of the protocol chip is connected to the charging control circuit, and a charging control pin of the protocol chip is connected to the gate of the first field effect transistor.

6. The switching circuit according to claim 5, characterized in that: The second circuit also includes a seventh resistor, a third capacitor and a second capacitor. The first end of the seventh resistor is connected to the charging object, and the second end is connected to the first end of the third capacitor and the protocol chip. The second end of the third capacitor is grounded and connected to the first end of the second capacitor. The second end of the second capacitor is connected to the protocol chip.

7. The switching circuit according to claim 5, characterized in that: The second circuit also includes a ninth resistor, a tenth resistor and a fourth capacitor, the second end of the ninth resistor is connected to the first end of the fourth capacitor and the protocol chip, the second end of the fourth capacitor is grounded and connected to the second end of the tenth resistor, and the first end of the ninth resistor and the first end of the tenth resistor are correspondingly connected to the first connection confirmation pin and the second connection confirmation pin of the first interface.

8. The switching circuit according to claim 5, characterized in that: The second circuit also includes a third field effect transistor and an eighth resistor, the source of the third field effect transistor is connected to the first interface, the gate of the third field effect transistor is connected to the first end of the eighth resistor and the protocol chip, the second end of the eighth resistor is grounded, and the drain of the third field effect transistor is connected to the voltage pin of the protocol chip.

9. The switching circuit according to claim 3, characterized in that: The charging control circuit also includes a voltage detection circuit, which includes a first resistor and a second resistor, wherein the first end of the first resistor is connected to the first circuit and the power supply pin of the first interface, the second end of the first resistor is connected to the second circuit and the first end of the second resistor, and the first end of the second resistor is grounded and connected to the ground end of the second interface.

10. A patch cord, characterized in that: The switching line includes the switching circuit as described in any one of claims 1-9.

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