WO2022228246A1 - Circuit d'interface, dispositif électronique et procédé de transmission de signal de communication - Google Patents

Circuit d'interface, dispositif électronique et procédé de transmission de signal de communication Download PDF

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Publication number
WO2022228246A1
WO2022228246A1 PCT/CN2022/087974 CN2022087974W WO2022228246A1 WO 2022228246 A1 WO2022228246 A1 WO 2022228246A1 CN 2022087974 W CN2022087974 W CN 2022087974W WO 2022228246 A1 WO2022228246 A1 WO 2022228246A1
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WIPO (PCT)
Prior art keywords
interface
electrically connected
line
terminal
power
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Application number
PCT/CN2022/087974
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English (en)
Chinese (zh)
Inventor
郭朋飞
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维沃移动通信有限公司
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Publication of WO2022228246A1 publication Critical patent/WO2022228246A1/fr

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/00032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
    • H02J7/00034—Charger exchanging data with an electronic device, i.e. telephone, whose internal battery is under charge
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/70—Services for machine-to-machine communication [M2M] or machine type communication [MTC]

Definitions

  • the present application belongs to the field of electronic equipment, and specifically relates to an interface circuit, electronic equipment and a communication signal transmission method.
  • two electronic devices need to be connected for communication.
  • the two electronic devices can be communicated and connected through the interface. After the two electronic devices are connected through the interface, if a charging device is connected to one of the electronic devices, the charging device can not only supply power to the electronic device, but also provide power for the electronic device. The electronic device connected to the electronic device is charged.
  • the electronic device may also be connected with an external device (such as a keyboard or a mouse, etc.).
  • an external device such as a keyboard or a mouse, etc.
  • the two terminals are the same terminal. If the terminal is used for communication with an external device, communication between the two electronic devices cannot be performed, and if the terminal is used for communication between two electronic devices, the terminal cannot be used for communication with an external device communication between.
  • the purpose of the embodiments of the present application is to provide an interface circuit, an electronic device and a communication signal transmission method, which can solve the problem that communication between two electronic devices and communication between one of the electronic devices and an external device cannot be realized at the same time.
  • an interface circuit including:
  • the first power line in the first interface is electrically connected with the power line in the second interface, wherein the first interface is used for communication connection with an electronic device, the The second interface is used for communication connection with the charging device;
  • the first signal terminal of the processing module is electrically connected with the signal line in the second interface
  • the second signal terminal of the processing module is electrically connected with the signal line in the first interface
  • the signal line in the third interface is electrically connected to the second signal terminal of the processing module
  • the first switch module is arranged on the path between the second power line in the first interface and the first input and output terminals of the processing module, and the control terminals of the first switch module and the processing module are connected to each other.
  • the second input and output terminals are electrically connected.
  • an embodiment of the present application provides an electronic device, including the interface circuit provided in the first aspect.
  • an embodiment of the present application provides a communication signal transmission method, the method is applied to the interface circuit provided in the first aspect, and the method includes:
  • the first interface When the first interface is communicatively connected to the electronic device, and the second interface is communicatively connected to the charging device, if it is detected that the third interface is connected to an external device, the first interface is controlled to be connected to an external device.
  • the switch module is switched from the open state to the closed state;
  • the charging device when the first switch module is closed, the charging device is electrically connected to the electronic device through a first channel, and the first channel includes: the signal line in the second interface, the The first signal terminal of the processing module, the first input and output terminal of the processing module, and the second power line in the first interface.
  • the charging device can not only supply power to the electronic device connected to the first interface, but also provide power to the electronic device including the interface circuit. equipment to supply power. Since the first switch module is arranged on the path between the second power line in the first interface and the first input and output terminals of the processing module, when the third interface is connected to an external device, the first switch can be connected to The module is closed, so that the second power line in the first interface is connected to the first input and output terminals of the processing module.
  • the processing module can communicate with the first interface through the first input and output terminals.
  • the second signal terminal of the processing module occupied by the first interface is released, so that the second signal terminal of the processing module can communicate with the signal line in the third interface, thereby realizing the communication between the electronic device and the electronic device through the first interface. While communicating, it can also communicate with an external device through the third interface.
  • FIG. 1 is a schematic structural diagram of a screen projection system in the related art.
  • FIG. 2 is a schematic structural diagram of an interface circuit in the related art.
  • FIG. 3 is a schematic diagram of a C2C line in the related art.
  • FIG. 4 is a schematic structural diagram of an embodiment of an interface circuit provided by the present application.
  • FIG. 5 is a schematic structural diagram of another embodiment of the interface circuit provided by the present application.
  • FIG. 6 is a schematic structural diagram of still another embodiment of an interface circuit provided by the present application.
  • FIG. 7 is a schematic structural diagram of still another embodiment of the interface circuit provided by the present application.
  • FIG. 8 is a schematic flowchart of an embodiment of a communication signal transmission method provided by the present application.
  • first, second and the like in the description and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances so that the embodiments of the present application can be practiced in sequences other than those illustrated or described herein, and distinguish between “first”, “second”, etc.
  • the objects are usually of one type, and the number of objects is not limited.
  • the first object may be one or more than one.
  • “and/or” in the description and claims indicates at least one of the connected objects, and the character “/" generally indicates that the associated objects are in an "or” relationship.
  • a communication connection is required between two electronic devices. For example, if the display screen of the electronic device is relatively small, the electronic device can be communicated with the electronic device with a larger display screen to connect the electronic device with a smaller display screen. The content displayed by the device is projected onto the electronic device with a larger display screen; or, the screen of the electronic device is expanded, and the display screens of the two electronic devices are spliced together for display.
  • the two electronic devices can be connected through wired communication. After the two electronic devices are wiredly connected, if a charging device is connected to one of the electronic devices, the charging device can not only supply power to the electronic device, but also provide power to the electronic device. The electronic device to which the electronic device is connected is charged.
  • the electronic device may also be connected with an external device (such as a keyboard, a mouse, or a remote control, etc.).
  • an external device such as a keyboard, a mouse, or a remote control, etc.
  • the first electronic device is connected in communication with the second electronic device through an interface, and the second electronic device can project the displayed content to the first electronic device for display.
  • the second electronic device is required to supply power to the first electronic device.
  • the charging device In the case where a charging device is connected to the first electronic device, the charging device not only supplies power to the first electronic device, but also supplies power to the second electronic device.
  • the first electronic device is also connected with an external device.
  • the external device in FIG. 1 is a keyboard, but the external device is not specifically limited here. .
  • the following describes how to implement the communication connection between the first electronic device and the second electronic device, the charging device and the external device, respectively, with reference to FIG. 2 .
  • FIG. 2 is a schematic structural diagram of an interface circuit of a first electronic device in the related art.
  • the first electronic device includes: a first interface, a second interface, a third interface, a processing module and a voltage regulator module.
  • the first interface is used for communication connection with the second electronic device
  • the second interface is used for communication connection with the charging device
  • the third interface is used for communication connection with an external device.
  • the charging device When the first interface is communicatively connected to the second electronic device and the second interface is communicatively connected to the charging device, the charging device not only supplies power to the first electronic device through the voltage regulator module, but also charges the second electronic device. Specifically, the charging device may charge the second electronic device in a fast charging manner.
  • the fast charging method is carried out by increasing the charging power.
  • the method is to use low voltage and high current for fast charging.
  • fast charging solutions based on D+/D- two-wire communication such as VOOC, QC, etc.
  • those based on CC single-wire communication such as Power Delivery (PD) protocol.
  • PD Power Delivery
  • C2C cables Most of the cables based on the CC single-wire communication protocol are type-c to type-c cables (referred to as C2C cables). There are 24 cables in the C2C cable, and the 24 cables in the C2C cable can refer to Figure 3 for details. 3 It can be seen that the C2C line includes 4 VBUS lines and 4 ground lines (GND lines). Because the C2C line has many pins, it can realize the forward and reverse insertion function, the video and audio communication function, the data transmission function, and the power transmission function. The C2C line is rich in functions, so there are many application scenarios based on the C2C line. In the example in Figure 2, the C2C line in the first interface is connected to the second electronic device to realize screen projection, which is an application scenario.
  • the processing module passes the terminal dm2 and the terminal The dp2 communicates with the terminal dm and the terminal dp in the first interface, so as to realize the communication between the first electronic device and the second electronic device.
  • the terminal dm and the terminal dp in the third interface also communicate with the processing module through the terminal dm2 and the terminal dp2. In this way, communication between two electronic devices and communication between one of the electronic devices and an external device cannot be realized at the same time.
  • the present application provides an interface circuit, and the interface circuit may be the interface circuit in the above-mentioned first electronic device.
  • the interface circuit provided by the present application will be described below with reference to FIG. 4 .
  • the interface circuit includes:
  • the first interface 100 and the second interface 200, the first power line 102 in the first interface 100 is electrically connected with the power line 202 in the second interface 200, wherein the first interface 100 is used for communication connection with the electronic device, the first The second interface 200 is used for communication connection with the charging device;
  • the first signal terminal 502 of the processing module 500 is electrically connected to the signal wire 204 in the second interface 200, and the second signal terminal 504 of the processing module 500 is electrically connected to the signal wire 104 in the first interface 100;
  • the third interface 300, the signal line 302 in the third interface 300 is electrically connected to the second signal terminal 504 of the processing module 500;
  • the first switch module 600 is disposed on the path between the second power line 106 in the first interface 100 and the first input and output terminals 506 of the processing module 500 .
  • the two input and output terminals 508 are electrically connected.
  • the charging device can not only supply power to the electronic device connected to the first interface 100, but also provide power for the electronic device connected to the first interface 100.
  • the device including the interface circuit is powered. Since the first switch module is disposed on the path between the second power line in the first interface 100 and the first input and output terminals of the processing module 500 , when the third interface 300 is connected to an external device, the The first switch module is closed, so that the second power line in the first interface 100 is connected to the first input and output terminals of the processing module 500 .
  • the processing module 500 can communicate with the first interface 100 through the first input and output terminals.
  • the second signal terminal of the processing module 500 occupied by the first interface 100 is released, so that the second signal terminal of the processing module 500 can communicate with the signal line in the third interface 300, so that the While the interface 100 communicates with the second electronic device, it can also communicate with an external device through the third interface 300 .
  • the signal lines in the first interface 100 include: a first positive signal line dp_1 and a first negative signal line dm_1
  • the signal lines in the second interface 200 It includes: a second positive signal line dp_2 and a second negative signal line dm_2
  • the signal lines in the third interface 300 include: a third positive signal line dp_3 and a third negative signal line dm_3.
  • the second positive signal line dp_2 is electrically connected to the first positive signal terminal dp1_5 of the first signal terminals, and the second negative signal line dm_2 is electrically connected to the first negative signal terminal dm1_5 of the first signal terminals 502 .
  • Both the first positive signal line dp_1 and the third positive signal line dp_3 are electrically connected to the second positive signal terminal dp2_5 in the second signal terminal 504 , and both the first negative signal line dm_1 and the third negative signal line dm_3 are connected to the second signal terminal The second negative signal terminal dm2_5 in is electrically connected.
  • the second power line 106 in the first interface 100 may include a first ground line GND1_1 and a first voltage line VBUS1_1 for supplying voltage.
  • the first input/output terminal 506 includes a first sub-input/output terminal gpio3 and a second sub-input/output terminal gpio4; the second input/output terminal 508 includes a third sub-input/output terminal gpio2 and a fourth sub-input/output terminal gpio1.
  • the first switch module 600 includes a first switch unit KEY_1 and a second switch unit KEY_2.
  • the first switch unit includes KEY_1: a first contact, a second contact and a first control terminal, the first contact is electrically connected to the first voltage line VBUS1_1, the second contact is electrically connected to the first sub input and output terminal gpio3, The first control terminal is electrically connected to the third sub input and output terminal gpio2.
  • the second switch unit KEY_2 includes: a third contact, a fourth contact and a second control terminal, the third contact is electrically connected to the first ground wire GND1_1, the fourth contact is electrically connected to the second sub input and output terminal gpio4, The second control terminal is electrically connected to the fourth sub input and output terminal gpio1.
  • the second power line 106 in the first interface 100 includes two types, namely the ground line (ie the first ground line GND1_1 ) and the voltage line (ie the first voltage line VBUS1_1 ), in order to To control the connection between the ground wire and the voltage wire of the second power wire 106 in the first interface 100 and the processing module 500 , the first switch unit KEY_1 needs to be used to control the connection between the first voltage wire VBUS1_1 and the processing module 500 . On-off, and use the second switch unit KEY_2 to control on-off between the first ground wire GND1_1 and the processing module 500 .
  • the third interface 300 when the third interface 300 is not connected to an external device, the first switch unit KEY_1 and the second switch unit KEY_2 are both disconnected, and the first interface 100 communicates with the processing module through the signal lines (dp_1 and dm_1) therein. 500 performs communication, and the second positive signal terminal dp2_5 and the second negative signal terminal dm2_5 are occupied during this communication.
  • both the first switch unit KEY_1 and the second switch unit KEY_2 are closed, and the first interface 100 communicates with the processing module 500 through the second power lines (VBUS1_1 and GND1_1) therein.
  • the third interface 300 (external device) is in contact with the processing module.
  • 500 may use the second positive signal terminal dp2_5 and the second negative signal terminal dm2_5 for communication. Therefore, while communicating with the second electronic device through the first interface 100 , it is also possible to communicate with an external device through the third interface 300 .
  • the first contact is a moving contact.
  • the second contact is a stationary contact.
  • the A contact is electrically connected to the second voltage line VBUS_1 in the first power line, and when the first switch unit KEY_1 is closed, the first contact is electrically connected to the first sub input and output terminal gpio3.
  • the third contact is a moving contact
  • the fourth contact is a static contact. Referring to B in FIG. 6 , when the second switch unit KEY_2 is disconnected, the third contact is connected to the first power line
  • the second ground wire GND_1 is electrically connected to the second ground wire
  • the second switch unit KEY_2 is closed, the third contact is electrically connected to the second sub input and output terminal gpio4.
  • the first switch unit KEY_1 when the first switch unit KEY_1 is disconnected, the first voltage line VBUS_1 in the first interface 100 is electrically connected with the second voltage line VBUS1_1 in the first interface 100 , and the first ground line in the first interface 100 is electrically connected GND_1 is connected to the second ground line GND1_1 in the first interface 100 .
  • the electronic device transmits electrical signals to the voltage stabilization module 400 through the first interface 100, the electrical signals can be transmitted through a larger number of cables (the first voltage line VBUS_1 and the second voltage line VBUS1_1).
  • the first voltage line VBUS_1 includes three cables
  • the second voltage line VBUS1_1 includes one cable. If one cable can transmit a current of 2A, then the electronic device transmits electrical signals to the voltage stabilization module 400 through three cables, and the transmission current is 6A. If the first voltage line VBUS_1 and the second voltage line VBUS1_1 are connected, then the electronic device transmits electrical signals to the voltage stabilization module 400 through 4 cables, and the current is 8A at this time, which is compared to the transmission of electricity to the voltage stabilization module through 3 cables. In the case of signals, the transmission current is relatively large, and the power is relatively large. In this way, the device including the interface circuit can be powered by a relatively large amount of power.
  • the interface circuit may further include:
  • the first terminal of the second switch module 700 is electrically connected to the first power line 102 in the first interface 100
  • the second terminal of the second switch module 700 is electrically connected to the power line 202 in the second interface 200 connect;
  • the second switch module 700 is disconnected, and the electronic device supplies power to the device including the interface circuit; when the second interface 200 is in communication connection with the charging device, The second switch module 700 is closed, and the device including the interface circuit and the electronic device are powered by the charging device.
  • the second switch module 700 when the electronic device connected to the first interface 100 stops supplying power to the outside, the second switch module 700 can be controlled to be in a closed state, so that the charging device can replace the electronic device to continue supplying power, thereby realizing the power supply of the interface circuit.
  • the electronic device can be charged while the device is powered.
  • the first power line 102 in the first interface 100 includes a second ground line GND_1 and a second voltage line VBUS_1 for supplying voltage.
  • the power line 202 includes a third ground line GND_2 and a third voltage line VBUS_2 for supplying voltage.
  • the second ground line GND_1 is electrically connected to the third ground line GND_2 through the second switch module 700
  • the second voltage line VBUS_1 is electrically connected to the third voltage line VBUS_2 through the second switch module 700 .
  • the second switch module 700 may include a third switch unit and a fourth switch unit, the first terminal of the third switch unit is electrically connected to the second voltage line VBUS_1 in the first interface 100 , and the first terminal of the third switch unit is electrically connected to the second voltage line VBUS_1 in the first interface 100
  • the two terminals are electrically connected to the voltage line VBUS_2 in the second interface 200 ; the first terminal of the fourth switch unit is electrically connected to the second ground line GND_1 in the first interface 100 , and the second terminal of the fourth switch unit is electrically connected to the second interface
  • the ground line GND_2 in 200 is electrically connected.
  • the cable in the first interface 100 may be the cable shown in FIG. 3 .
  • the first interface 100 has 4 VBUS wires and 4 ground wires.
  • three of the VBUS lines may be used as the second voltage line VBUS_1, three of the ground lines may be used as the second ground line GND_1, the other one of the VBUS lines may be used as the first voltage line VBUS1_1, and the other One ground wire is used as the first ground wire GND1_1.
  • two of the VBUS lines may be used as the second voltage line VBUS_1, two of the ground lines may be used as the second ground line GND_1, the other two VBUS lines may be used as the first voltage line VBUS1_1, and the other two The 2 ground wires are used as the first ground wire GND1_1.
  • the above are two examples of the distribution methods of the VBUS line and the ground line in the first interface 100, and other methods may also be used to distribute the VBUS line and the ground line in the first interface 100, which are not specifically limited here.
  • the present application also provides an electronic device, including: the interface circuit according to any one of the above embodiments.
  • the electronic device provided by the present application has the same technical effect as the interface circuit of the above-mentioned embodiment, and details are not repeated here.
  • the electronic device is an electronic device without a battery.
  • the electronic device may be a mobile electronic device or a non-mobile electronic device.
  • the mobile electronic device may be an in-vehicle electronic device, a screen projection device (such as a projector), and a display.
  • the non-mobile electronic device may be a television (television, TV), a teller machine, or a self-service machine, etc., which is not specifically limited in this embodiment of the present application.
  • FIG. 8 is a schematic flowchart of an embodiment of a communication signal transmission method provided by the present application. As shown in FIG. 8, the communication signal transmission method 800 includes:
  • the charging device when the first switch module 600 is closed, the charging device is electrically connected to the electronic device through a first channel, and the first channel includes: the signal line 204 in the second interface 200 and the first signal of the processing module 500 arranged in sequence.
  • the method 800 for transmitting a communication signal is exemplarily described below.
  • the interface circuit is the circuit shown in FIG. 4
  • the device including the interface circuit is a screen projection device.
  • the electronic device in order to project the content displayed by the electronic device to the screen-casting device for display, the electronic device can be communicatively connected to the first interface 100 of the screen-casting device.
  • the second interface 200 and the third interface 300 No device is connected.
  • the electronic device supplies power to the screen-casting device, and projects the content displayed by the electronic device to the screen-casting device for display.
  • the second interface 200 is in communication connection with the charging device, and the third interface 300 is not in communication connection with the external device, a communication signal is transmitted between the charging device and the electronic device through the second channel, wherein the second The path includes the signal wire 204 in the second interface 200 , the first signal terminal 502 of the processing module 500 , the second signal terminal 504 of the processing module 500 , and the signal wire 104 in the first interface 100 , which are arranged in sequence.
  • a communication signal is transmitted between the charging device and the electronic device through the second channel, which may specifically include:
  • the second interface 200 sends a charging request to the first signal terminal 502 of the processing module 500 through its signal wire 204 , and then the processing module 500 sends a charging request to the signal wire 104 in the first interface 100 through the second signal terminal 504 to send a charging request to the
  • the electronic device connected to the first interface 100 requests a proprietary protocol for fast charging.
  • the electronic device stops power supply, and sends a charging response agreeing to charging to the second signal terminal 504 of the processing module 500 through the signal line 104 in the first interface 100 .
  • the charging device outputs an electrical signal to the voltage regulator module 400 to supply power to the device including the interface circuit.
  • the charging device also supplies power to the electronic device.
  • the first switch module 600 is controlled by the processing module 500 to switch from the disconnected state to the closed state; then, the charging device and the electronic device are connected through the first channel transmit communication signals.
  • the following describes the communication signal transmission method 800 of the embodiment of the present application by taking the interface circuit shown in FIG. 7 as an example.
  • the processing module 500 determines whether the third interface 300 is connected with an external device.
  • the processing module 500 can detect whether the third interface 300 is connected with an external device, and can also detect whether the third interface 300 is connected with an external device by the electronic device connected to the first interface 100, and the electronic device can send the detection result to The processing module 500, the processing module 500 determines whether the third interface 300 is connected with an external device according to the detection result.
  • the processing module 500 determines that the third interface 300 is connected to an external device, the processing module 500 controls the first switch unit KEY_1 to be in a closed state through the second input and output terminal gpio2, and the processing module 500 controls the first switch unit KEY_1 to be in a closed state through the second input and output terminal gpio1
  • the second switch unit KEY_2 is in a closed state.
  • the first path for transmitting communication signals between the charging device and the electronic device includes the signal lines 204 (dp_2 and dm_2) in the second interface 200, the first signal terminals 502 (dp1_5 and dm1_5) of the processing module 500, which are arranged in sequence. , the first input and output terminals ( gpio3 and gpio4 ) of the processing module 500 and the second power line 106 ( VBUS1_1 and GND1_1 ) in the first interface 100 .
  • the first switch module is controlled 600 is switched from the open state to the closed state, so that the second power line 106 in the first interface 100 is connected to the first input and output terminals 506 of the processing module 500 .
  • the second power line 106 in the first interface 100 is used as a signal line for communication between the first interface 100 and the processing module 500 .
  • the second signal terminal 504 of the processing module 500 occupied by the first interface 100 is released, so that the second signal terminal 504 of the processing module 500 can communicate with the signal line in the third interface 300, thereby realizing While the first interface 100 communicates with the electronic device, it can also communicate with an external device through the third interface 300 .
  • the communication signal transmission method 800 may further include:
  • the first switch module 600 When the first switch module 600 is closed, and the first switch module 600 is electrically connected to the second power line 106 in the first interface 100 and the first power line 102 in the first interface 100 before closing, the first switch module 600 sends a message to the charging device.
  • first request information where the first request information is used to request that the charging power be adjusted to the first power;
  • the charging power is adjusted to the first power.
  • sending the first request information to the charging device may specifically include:
  • the charging power reduction request is sent to the charging device through the signal line 204 in the second interface 200, so that the charging device adjusts the charging power to the first power.
  • the first request information is used to request that the charging power be reduced to the first power.
  • the power output by the charging device after reducing the charging power is transmitted to the device including the interface circuit and the first power line 102 in the first interface 100 through the power line 202 in the second interface 200 to realize charging
  • the device powers the device and electronic device including the interface circuit.
  • the first switch module 600 includes a first switch unit KEY_1 and a second switch unit KEY_2.
  • the first switch unit KEY_1 and the second switch unit KEY_2 are both disconnected, the first voltage line VBUS1_1 in the first interface 100 is connected to the second switch unit KEY_2.
  • the two voltage lines VBUS_1 are electrically connected, and the first ground line GND1_1 in the first interface 100 is electrically connected to the second ground line GND_1 .
  • the charging device charges the electronic device, charging is performed through a large number of cables (specifically including the first voltage line VBUS1_1 , the second voltage line VBUS_1 , the first ground line GND1_1 and the second ground line GND_1 ).
  • the charging device When both the first switch unit KEY_1 and the second switch unit KEY_2 are closed, since the first voltage line VBUS1_1 and the first ground line GND1_1 are no longer used by the charging device to charge the electronic device, the charging device is used for charging the electronic device The number of cables is reduced. In this case, the charging power needs to be reduced, for example, the charging power is reduced from 100W in the fast charging mode to 60W, so as to ensure that normal charging can be continued.
  • the communication signal transmission method 800 may further include:
  • the charging power is restored.
  • the second request information is sent to the charging device.
  • the first switch module 600 is controlled by the processing module 500 to switch from the closed state to the open state;
  • the signal line 204 in the second interface 200 sends the second request information;
  • the second request information is sent to the charging device through the signal line 204 in the second interface 200, so that the charging device restores the charging power to the state before the power adjustment.
  • the power output by the charging device after the charging power is restored is transmitted to the device including the interface circuit and the first power line 102 of the first interface 100 through the power line 202 in the second interface 200 to realize charging
  • the device powers the device and electronic device including the interface circuit.
  • the processing module 500 determines whether the third interface 300 ends the connection with the external device.
  • the processing module 500 can detect whether the third interface 300 ends connecting to the external device, and the electronic device connected to the first interface 100 can also detect whether the third interface 300 ends connecting to the external device, and the electronic device can use the detection result to detect whether the third interface 300 ends connecting to the external device. It is sent to the processing module 500, and the processing module 500 determines whether the third interface 300 has finished connecting with the external device according to the detection result.
  • the processing module 500 controls the first switch unit KEY_1 and the second switch unit KEY_2 to switch to the disconnected state, and makes the first voltage line VBUS1_1 in the first interface 100 connect with the first switch unit KEY_1 and the second switch unit KEY_2.
  • the two voltage lines VBUS_1 are electrically connected, and the first ground line GND1_1 in the first interface 100 is electrically connected to the second ground line GND_1 .
  • the control module 500 restores the charging power of the charging device to the electronic device to the state before the power adjustment, so as to restore the fast charging of the electronic device by the charging device.
  • the charging device in the embodiment of the present application can charge the electronic device based on the private fast charging protocol, which expands the adaptability of the private fast charging protocol and is beneficial to the private fast charging protocol.
  • the promotion of the fast charging protocol has improved the user's fast charging experience.

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  • Signal Processing (AREA)
  • Power Sources (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

Sont divulgués dans la présente demande un circuit d'interface, un dispositif électronique et un procédé de transmission de signal de communication, qui appartiennent au domaine des dispositifs électroniques. Le circuit d'interface comprend : une première interface et une deuxième interface, une première ligne d'alimentation dans la première interface étant électriquement connectée à une ligne d'alimentation dans la deuxième interface, la première interface étant utilisée pour réaliser une connexion de communication avec un dispositif électronique, et la deuxième interface étant utilisée pour réaliser une connexion de communication avec un dispositif de charge ; un module de traitement, une première borne de signal du module de traitement étant électriquement connectée à une ligne de signal dans la deuxième interface, et une deuxième borne de signal du module de traitement étant connectée électriquement à une ligne de signal dans la première interface ; une troisième interface, une ligne de signal dans la troisième interface étant électriquement connectée à la deuxième borne de signal du module de traitement ; et un premier module de commutation, qui est disposé sur un trajet entre une deuxième ligne d'alimentation dans la première interface et une première borne d'entrée/sortie du module de traitement, et une borne de commande du premier module de commutation étant connectée électriquement à une deuxième borne d'entrée/sortie du module de traitement.
PCT/CN2022/087974 2021-04-27 2022-04-20 Circuit d'interface, dispositif électronique et procédé de transmission de signal de communication WO2022228246A1 (fr)

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CN116707049A (zh) * 2022-09-19 2023-09-05 荣耀终端有限公司 充电电路和设备
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