Electronic device

Abstract

The embodiment of the invention provides electronic equipment. The electronic equipment comprises an energy storage unit, a control unit, a charging interface, a screen projection interface, a first circuit and a second circuit, the first circuit is respectively connected with the charging interface and the energy storage unit to form a charging path of the electronic equipment, and the second circuit is respectively connected with the projection screen interface and the energy storage unit to form a projection screen power supply path of the electronic equipment; the control unit is connected with the first circuit and the second circuit. The control unit is used for transmitting screen projection data to external equipment through the screen projection power supply access and charging the energy storage unit through the charging access while supplying power to the external screen projection equipment; wherein the charging interface and the screen projection interface are both USB Type-C interfaces. The charging interface and the screen projection interface are arranged on the electronic equipment, so that the electronic equipment can be charged at the same time, the electronic equipment performs data screen projection to the outside, and the use experience of a user is effectively improved.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to an electronic device. Background Art

[0002] With the development of electronic devices, the demand for data transmission and charging is getting higher and higher. The battery life of current electronic devices is the focus of users, and existing electronic devices usually have only one interface, which is responsible for both data transmission and charging.

[0003] When projecting data through the interface of an electronic device, the electronic device cannot be charged at the same time, and the electronic device needs to be powered externally when projecting data, which seriously affects the battery life of the electronic device, limits the usage scenarios of the electronic device, and provides a poor user experience. Summary of the invention

[0004] An embodiment of the present application provides an electronic device that can simultaneously support data projection and charging, effectively improving the user experience.

[0005] In a first aspect, an embodiment of the present application provides an electronic device, the electronic device comprising: an energy storage unit, a control unit, a charging interface, a screen projection interface, a first circuit and a second circuit;

[0006] The first circuit is connected to the charging interface and the energy storage unit respectively to form a charging path for the electronic device, and the second circuit is connected to the screen projection interface and the energy storage unit respectively to form a screen projection power supply path for the electronic device; the control unit is connected to the first circuit and the second circuit respectively;

[0007] The control unit is used to transmit the projection data to the external device through the projection power supply path, and to charge the energy storage unit through the charging path while supplying power to the external projection device;

[0008] Among them, the charging interface and the screen projection interface are both USB Type-C interfaces.

[0009] In some embodiments, the first circuit includes: a first control module, a first overvoltage protection module, a fast charging module, and a main charging module;

[0010] The first control module is connected to the charging interface and the control unit respectively, and the first overvoltage protection module is connected to the charging interface, the fast charging module and the main charging module respectively; the fast charging module is also connected to the control unit and the energy storage unit respectively; the main charging module is also connected to the energy storage unit and the control unit respectively;

[0011] The main charging module is used for, when detecting that the charging interface is connected to an external device, if the external device is a first target device, detecting the type of the target device through the first control module, and sending the type of the target device to the control unit;

[0012] The control unit is used to communicate with the target device according to the type of the target device, so that the target device outputs corresponding current and voltage to charge the battery.

[0013] In some embodiments, if the first target device is a power adapter, the control unit communicates with the power adapter so that the power adapter outputs a first target current and a first target voltage, and charges the battery through the first overvoltage protection module and the fast charging module;

[0014] If the first target device is not a power adapter, the control unit communicates with the first target device so that the first target device outputs a second target current and a second target voltage, and charges the battery through the first overvoltage protection module and the main charging module; the first target current is greater than the second target current, and the first target voltage is greater than the second target voltage.

[0015] In some embodiments, the first circuit further includes: a second control module and a switching module;

[0016] The switching module is respectively connected to the charging interface, the second control module, the main charging module and the control unit, and the first control module is also connected to the control unit;

[0017] The main charging module is configured to, when detecting that the charging interface is connected to an external device, detect the type of the second target device through the second control module if the external device is a second target device, and send the type of the second target device to the control unit;

[0018] The control unit is used to communicate with the second target device according to the type of the second target device, so that the target device outputs a target voltage and a target current to charge the battery.

[0019] In some embodiments, the switching module includes a first path and a second path, the first path being a default path of the switching module;

[0020] The control unit is further used to switch the first path to the second path;

[0021] The second control module detects the type of the second target device through the second path.

[0022] In some embodiments, if the second target device is a power adapter, the control unit communicates with the power adapter so that the power adapter outputs a third target current and a fourth target voltage, and charges the battery through the first overvoltage protection module and the fast charging module;

[0023] If the second target device is not a power adapter, the control unit communicates with the second target device so that the second target device outputs a fourth target current and a fourth target voltage, and charges the battery through the first overvoltage protection module and the main charging module; the third target current is greater than the fourth target current, and the third target voltage is greater than the fourth target voltage.

[0024] In some embodiments, the first circuit further includes: a power collection unit; the power collection unit is connected to the energy storage unit and the control unit respectively;

[0025] The power collection unit is used to collect the power information of the energy storage unit and send the power information to the control unit.

[0026] In some embodiments, the control unit is further configured to:

[0027] When it is determined according to the power information that the energy storage unit is low on power, the energy storage unit is trickle charged by the main charging module.

[0028] In some embodiments, the second circuit includes: a third control module and a second overvoltage protection module;

[0029] The second overvoltage protection module is respectively connected to the screen projection interface, the control unit, and the third control module, the third control module is also respectively connected to the control unit and the battery, and the screen projection interface is also connected to the control unit;

[0030] The third control module is used to identify the external device when detecting that the screen projection interface is connected to the external device, and send the identification result to the control unit;

[0031] The control unit is used to transmit data to the external device through the screen projection interface.

[0032] In some embodiments, the third control module is specifically used to:

[0033] When the external device is determined to be a third target device based on the identification result of the external device, communication is performed with the third target device to determine the identity of the third target device and the supported data transmission mode, and the identity of the third target device and the supported data transmission mode are sent to the control unit.

[0034] In some embodiments, the control unit is further configured to:

[0035] The control unit controls the energy storage unit to supply power to the third target device; the electric energy supplied by the energy storage unit is transmitted to the third target device through the third control module and the second overvoltage protection module.

[0036] In some embodiments, the charging interface and the screen projection interface are both USB Type-C interfaces.

[0037] The electronic device provided in the embodiment of the present application includes: an energy storage unit, a control unit, a charging interface, a screen projection interface, a first circuit and a second circuit; the first circuit is respectively connected to the charging interface and the energy storage unit to form a charging path of the electronic device, and the second circuit is respectively connected to the screen projection interface and the energy storage unit to form a screen projection path of the electronic device; the control unit is used to charge the energy storage unit through the charging path when an external charging device is connected to the charging interface; the control unit is also used to transmit screen projection data to the external device through the screen projection path when an external screen projection device is connected to the screen projection interface, and to supply power to the external screen projection device. By setting a charging interface and a screen projection interface on the electronic device, it is possible to simultaneously charge the electronic device and project data to the outside, which effectively improves the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application Figure 1 ;

[0039] Figure 2 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application Figure 2 ;

[0040] Figure 3 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application Figure 3 ;

[0041] Figure 4 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application Figure 4 ;

[0042] Figure 5A schematic diagram of the structure of an electronic device provided in an embodiment of the present application Figure 5 . DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0044] In the embodiments of the present application, words such as "first" and "second" are used to distinguish the same or similar items with substantially the same functions and effects, and do not limit their order. Those skilled in the art can understand that words such as "first" and "second" do not limit the quantity and execution order, and words such as "first" and "second" do not necessarily limit them to be different.

[0045] It should be noted that in the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0046] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0047] To facilitate understanding, the technical terms involved in this application are first briefly introduced.

[0048] DisplayPort (DP) projection is a high-quality digital video transmission technology implemented through the DisplayPort interface, which mainly includes the following features: High bandwidth: DisplayPort supports high-resolution and high-refresh rate video transmission, suitable for HD and UHD display. Versatility: In addition to video signals, DisplayPort can also transmit audio signals and other data. DisplayPort supports daisy chain connection, and multiple displays can be connected through one interface. Compatibility: DisplayPort can be compatible with other interfaces (such as HDMI, DVI, VGA) through adapters.

[0049] USB Type-C (Type-C or USB-C for short) is a Universal Serial Bus (USB) interface form factor standard. In practical applications, the versatility and high performance of the USB-C interface make it the preferred interface for modern devices. Combining the characteristics of DP projection and USB-C, many modern devices support DisplayPort video output through the USB-C interface, which is called "DP Alt Mode". Through this mode, users can use the USB-C interface to connect to the monitor to achieve high-resolution video output and multi-screen display.

[0050] With the development of science and technology, the performance of electronic devices is becoming more and more powerful, and accordingly, the demand for data transmission and charging is also increasing. As a universal interface standard, the USB Type-C interface is widely used in various electronic devices for data transmission and charging. Among them, the USB Type-C interface has gradually become the mainstream USB interface due to its advantages such as support for positive and negative insertion, fast transmission speed, and high charging power.

[0051] The battery life and usage time of current mobile devices are the focus of users' attention. Existing devices usually only have one Type-C interface, which is responsible for both data projection and charging functions. Only charging or data projection can be performed at the same time. When projecting data, electronic devices generally need to actively supply power to the outside, which consumes power quickly, limits usage scenarios and has poor battery life.

[0052] In view of this, an embodiment of the present application provides an electronic device, which includes a charging interface and a screen projection interface, wherein the charging interface is a charging interface of the electronic device, and the screen projection interface is a data transmission interface of the electronic device. By adding an interface to the electronic device, the charging and data transmission functions are separated, thereby enabling the electronic device to charge and project data at the same time, thereby improving the use scenarios and battery life of the electronic device.

[0053] The following specific embodiments are used to describe in detail the technical solution of the present application and how the technical solution of the present application solves the above technical problems. The following specific embodiments can be implemented independently or in combination with each other, and the same or similar concepts or processes may not be described in detail in some embodiments.

[0054] Figure 1 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application Figure 1 ,like Figure 1 As shown, the electronic device includes: a charging interface 1, a screen projection interface 2, a first circuit 3, a second circuit 4, a control unit 5 and an energy storage unit 6.

[0055] Among them, the charging interface 1 and the screen projection interface 2 are arranged on the shell of the electronic device, and the first circuit 3, the second circuit 4, the control unit 5 and the energy storage unit 6 can be arranged inside the shell of the electronic device.

[0056] In some embodiments, the control unit may be a control system chip of the electronic device, for example, a system on chip (SOC). Optionally, the charging interface 1 and the screen projection interface 2 may be a Type-C interface, a Type-A interface, etc., and the embodiment of the present application does not limit the types of the charging interface and the screen projection interface. The energy storage unit may be a battery of the electronic device.

[0057] In some embodiments, Figure 1 As shown, the first circuit 3 is respectively connected to the charging interface 1, the energy storage unit 6 and the control unit 5. The first circuit, the charging interface and the energy storage unit constitute a charging path for the electronic device.

[0058] When the charging interface 1 is connected to an external charging device (for example, a charger), the control unit 5 can communicate with the external charging device through the first circuit 3 so that the external charging device outputs a suitable current and voltage, which is input into the electronic device through the charging interface 1 and flows through the first circuit 3 to charge the energy storage unit 6.

[0059] In some embodiments, Figure 1 As shown, the second circuit 4 is respectively connected to the screen projection interface 2, the energy storage unit 6 and the control unit 5. The second circuit is connected to the screen projection interface and the energy storage unit to form a screen projection power supply path for the electronic device.

[0060] When the screen projection interface 2 is connected to an external screen projection device (for example, a display), the control unit 5 can communicate with the external device through the second circuit 4 to identify the identity of the external device. When the control unit 5 receives the user's screen projection instruction, it can transmit the screen projection data to the external device through the second circuit 4 and the screen projection interface 2. At the same time, the control unit 5 can also control the energy storage unit to supply power to the external screen projection device.

[0061] The electronic device provided in the embodiment of the present application separates the data transmission and charging functions of the electronic device by setting a charging interface and a screen projection interface, thereby realizing the simultaneous charging and data projection functions of the electronic device, thereby effectively improving the charging efficiency and the device usage experience.

[0062] Based on the above embodiments, Figure 2 The first circuit is described in further detail.

[0063] Figure 2 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application Figure 2 ,like Figure 2 As shown, the first circuit 3 includes a first control module 31 , a first overvoltage protection module 32 , a fast charging module 33 and a main charging module 34 .

[0064] Among them, the first control module 31 is connected to the charging interface 1 and the control unit 5 respectively, and the first overvoltage protection module 32 is connected to the charging interface 1, the fast charging module 33 and the main charging module 34 respectively; the fast charging module 33 is also connected to the control unit 5 and the energy storage unit 6 respectively; the main charging module 34 is also connected to the energy storage unit 6 and the control unit 5 respectively.

[0065] In some embodiments, when the main charging module 34 detects that the charging interface 1 is connected to an external device, it can determine whether the external device is a first target device through the pin of the external device (for example, whether it includes a CC pin). If it is (i.e., it includes a CC pin), the type of the first target device can be determined through the first control module 31. The first target device can be a device that supports the Power Delivery (PD) protocol. The type of the first target device can include a power adapter and a non-power adapter.

[0066] The first control module 31 can identify whether the first target device is a power adapter or other device through the CC pin. If the first target device is identified as a power adapter, the first control module can send the identification result to the control unit 5. The control unit 5 can communicate with the power adapter and apply to the power adapter for the online voltage (first target voltage) and current (first target current) required for charging the electronic device. The corresponding power adapter will output the corresponding online voltage and current. The online voltage and current output by the power adapter flow into the fast charging module 33 after passing through the charging interface 1 and the first overvoltage protection module. The fast charging module 33 charges the energy storage unit 6 after performing a voltage step-up conversion on the input voltage, thereby realizing fast charging of the energy storage unit 6.

[0067] When the first control module 31 identifies that the first target device is not a power adapter (for example, a computer) through the CC pin, it can communicate with the first target device and apply to the first target device for a smaller online voltage (second target voltage) and current (second target current). The online voltage and current output by the power adapter flow into the main charging module 34 after passing through the charging interface 1 and the first overvoltage protection module. The main charging module 34 converts the input voltage and charges the energy storage unit 6, thereby charging the energy storage unit 6.

[0068] In some embodiments, Figure 3 As shown, the first circuit further includes a second control module 35 and a switching module 36 .

[0069] When the main charging module 34 detects that the charging interface 1 is connected to an external device, it can determine whether the external device is a first target device through the pin of the external device (for example, whether it includes a CC pin). If not (i.e., it does not include a CC pin), it can be determined that the external device is a second target device. The main charging module 34 determines the type of the second target device through the second control module 35. The second target device may be a device that supports the Quick Charge (QC) protocol. The type of the second target device may include a power adapter and a non-power adapter.

[0070] In some embodiments, the switching module includes a first path and a second path, and the first path is a default path of the switching module. When the main charging module 34 determines that the external device is the second target device, it can switch the switching module from the first path to the second path, so that the second control module 35 can identify the type of the second target device through the second path.

[0071] The second control module 35 can identify whether the second target device is a power adapter or other device through the data transmission pin (DP / DM pin). If the second target device is identified as a power adapter, the second control module 35 can send the identification result to the control unit 5. The control unit 5 can communicate with the power adapter and apply to the power adapter for the online voltage (third target voltage) and current (third target current) required for charging the electronic device. The corresponding power adapter will output the corresponding online voltage and current. The online voltage and current output by the power adapter flow into the fast charging module 33 after passing through the charging interface 1 and the first overvoltage protection module. The fast charging module 33 performs a step-up conversion on the input voltage and charges the energy storage unit 6, thereby realizing fast charging of the energy storage unit 6.

[0072] When the second control module 35 identifies that the first target device is not a power adapter (e.g., a computer) through the DP / DM pin, it can communicate with the second target device and apply to the second target device for a smaller online voltage (fourth target voltage) and current (fourth target current). The online voltage and current output by the power adapter flow into the main charging module 34 after passing through the charging interface 1 and the first overvoltage protection module. The main charging module 34 converts the input voltage and then charges the energy storage unit 6, thereby charging the energy storage unit 6.

[0073] In some embodiments, Figure 3 As shown, the second circuit 2 further includes a power collection unit 37, and the power collection unit 37 is connected to the energy storage unit 6 and the control unit 5 respectively.

[0074] The power collection unit 37 is used to collect the power (power information), temperature, voltage and other state parameters of the energy storage unit 6 in real time, and send the collected power, temperature, voltage and other state parameters of the energy storage unit 6 to the control unit 5.

[0075] In some embodiments, during charging, if the control unit 5 determines that the energy storage unit 6 is low on power based on the status information of the energy storage unit 6 collected by the power collection unit, the main charging module 34 takes over the energy storage unit 6 and performs trickle charging on the energy storage unit 6 to activate the energy storage unit 6. For example, when the control unit 5 determines that the energy storage unit 6 is low on power, the control unit 5 switches the path of the switching module to the first path, and communicates with the power adapter so that the power adapter provides a voltage and current for trickle charging. The voltage and current for trickle charging provided by the power adapter pass through the first overvoltage protection module 32, and are converted by the voltage input by the main charging module 34 to perform trickle charging on the energy storage unit 6.

[0076] In some embodiments, the first control module 31 may be a PD controller.

[0077] In some embodiments, the second control module 35 may be a QC controller

[0078] In some embodiments, the first overvoltage protection module 32 may be an overvoltage protection circuit (Over-Voltage Protection, OVP), including a second-level overvoltage protection OVP2 and a third-level overvoltage protection OVP3.

[0079] In some embodiments, the main charging module 34 may be a switch charging chip (SW Charge Chip).

[0080] In some embodiments, the fast charging module 33 may be a charge pump chip (Charge Pump).

[0081] In some embodiments, the switch module 36 may be a DP&DM SW (also called a switch IC).

[0082] In some embodiments, the power detection unit may be a fuel gauge chip.

[0083] The first circuit in the electronic device provided in the embodiment of the present application is introduced above. Figure 4 , the second circuit in the electronic device provided in an embodiment of the present application is introduced.

[0084] Figure 4 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application is shown in FIG. Figure 4 As shown, the second circuit 4 includes a second overvoltage protection module 41 and a third control module 42 .

[0085] The second overvoltage protection module 41 is respectively connected to the projection interface 2, the control unit 5, and the third control module 42. The third control module 42 is also respectively connected to the control unit 5 and the battery 6. The projection interface 2 is also connected to the control unit 5.

[0086] When the third control module 42 detects that the screen projection interface 2 is connected to an external device, the second control module 42 can identify the external device through the pin of the connected external device and determine the role of the external device (for example, a host or a peripheral).

[0087] When the third control module 42 identifies the role of the external device, it can send the identification result to the control unit 5. At the same time, when the external device is a peripheral device (third target device), the third control module 42 can perform an initial handshake and mutually supported protocols with the external device and negotiate appropriate voltage and current.

[0088] After the third control module 42 performs an initial handshake with the external device, the third control module 42 performs a vendor defined message (VDM) negotiation with the external device and enters the DisplayPort Alternate Mode (DisplayPort Alternate Mode) for handshake. After the third control module 42 successfully performs a handshake with the external device, the third control module 42 can perform device enumeration through the pins of the projection interface 2 to determine the identity of the external device (for example, a display, smart glasses, etc.) and negotiate to determine the data transmission format or mode (for example, resolution, frame rate, etc.) supported by the external device, and send the determined identity of the external device and the data transmission format or mode supported by the external device to the control unit 5.

[0089] When the control unit 5 receives the identity of the external device and the data transmission format or mode supported by the external device sent by the third control module 42, when it receives a screen projection instruction (or a data transmission instruction), it can process the data to be transmitted into data that matches the external device, and transmit the processed data to the external device through the screen projection interface 2 to complete the data transmission or screen projection.

[0090] In some embodiments, when the control unit 5 is performing data transmission, the control unit 5 can control the energy storage unit 6 to power the external device according to the voltage and current negotiated and determined with the external device, and the electric energy supplied by the energy storage unit 6 is transmitted to the external device through the third control module 42 and the second overvoltage protection module 41.

[0091] In some embodiments, the third control module 42 may be a power storage unit management chip (Power Management IC, PMIC).

[0092] In some embodiments, the second overvoltage protection module 41 may be an overvoltage protection circuit (Over-Voltage Protection, OVP), including a first-level overvoltage protection circuit OVP1.

[0093] To summarize, the electronic device provided in the embodiment of the present application separates the charging function and the data transmission function of the electronic device by setting a charging interface and a screen projection interface, as well as a corresponding first circuit for realizing the charging function and a second circuit for realizing the data transmission function, thereby realizing the simultaneous charging and data projection functions of the electronic device, thereby improving the charging efficiency and the device usage experience.

[0094] The electronic device provided in the embodiment of the present application is described below with a specific example.

[0095] Figure 5 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application is shown in FIG. Figure 5 As shown, including:

[0096] Charging interface, projection interface, PD controller, QC controller, DP&DM SW, OVP2&3, fast charging Charge pump, SW Charge, Fuel Gauge, battery, SOC, PMIC, OVP1.

[0097] Among them, the charging interface is connected to the PD controller through the CC1 / CC2 pins, connected to the DP&DM SW through the DP / DM pins, and connected to OVP2&3 through the energy storage unit wiring (VBUS2).

[0098] The PD controller is connected to the SOC via the integrated circuit bus (I2C).

[0099] OVP2&3 are connected to the fast charge pump and SW Charge respectively through VBUS2.

[0100] The fast charge Charge pump is connected to the SOC through I2C, and the output end of the fast charge Charge pump and SW Charge is connected in parallel to the positive line VBATT of the battery.

[0101] The DP&DM SW is connected to the QC controller and SW Charge through the DP / DM pins respectively, and the DP&DM SW is connected to the SOC through the enable signal SW_EN.

[0102] The QC controller is connected to the SOC via I2C. The Fuel Gauge is connected to the SOC via I2C.

[0103] OVP1 is connected to the projection interface and PMIC through VBUS2, and is connected to the SOC through the enable signal OVP1_EN.

[0104] The PMIC is connected to the SOC through the serial peripheral interface (SPI), and is connected to the projection interface through the DP / DM pins and CC1 / CC2 pins. The SOC is also connected to the projection interface through the SSTX0 / SSTX1 pins, SSRX0 / SSRX1 pins, and SBU1 / SBU2 pins.

[0105] The above explains the connection relationship between the various components in the electronic device. The following introduces the process of charging and projecting the electronic device.

[0106] When you use the screen projection interface (screen projection interface) to project the screen, the following steps are included:

[0107] Step 1: After the PMIC chip recognizes the USB device connection through the CC pin, it negotiates to enter the DisplayPort Alternate Mode for handshake through the VDM message in the PD protocol.

[0108] Step 2: The PMIC chip then enumerates the USB device through the DP DM pin to determine the identity of the external device.

[0109] Step 3: The SOC chip transmits DisplayPort projection data through the SSRX / SSTX pin, and the SBU pin is used for the control and status information of DisplayPort projection.

[0110] When charging through the charging port (charging port), the following steps are included:

[0111] Step 1: The PD controller chip recognizes that the other party is a PD protocol device through the CC pin. The SOC applies for the online voltage / online current required by the device through the software code state machine area. The adapter will output VBUS for power supply; the output VBUS is converted into VBATT by the charge pump chip through OVP2&3 to charge the battery.

[0112] Step 2: SOC controls the SW IC chip of DP&DM SW through the GPIO of SW EN, and cuts the hardware path of DP&DM to the QC controller chip. The QC controller chip can identify that the adapter is a QC protocol adapter through the DP&DM pin. SOC applies for the online voltage / online current required by the device through the software code state machine area, and the adapter will output VBUS for power supply; the output VBUS is converted into VBATT by the charge pump chip through OVP2&3 to charge the battery.

[0113] Step 3: SOC controls the SW IC chip of DP&DM SW through the GPIO pin of SW EN, and switches the hardware path of DP&DM to the SW Charge chip. When the battery is low on power, the SW Charge chip can take over the battery for trickle charging to activate the battery. The VBUS provided by the adapter is converted into VBATT through OVP2&3 and the SW Charge chip to charge the battery.

[0114] Step 4: The Fuel gauge chip will report the battery voltage / temperature / power / remaining available capacity and other status in a timely manner.

[0115] When charging through the charging port and projecting through the projection port at the same time, the following steps are included:

[0116] Step 1: The PMIC chip recognizes the connection of the USB device through the CC pin of USB TypeC1 (also known as USB1 Type-C, projection interface), and negotiates to enter the DisplayPort Alternate Mode for handshake through the VDM message in the PD protocol.

[0117] Step 2: The PMIC chip then enumerates the USB device through the DP DM pin of USB TypeC1 to determine the identity of the external device.

[0118] Step 3: The SOC chip transmits DisplayPort projection data through the SSRX / SSTX pin of USB TypeC1, and the SBU pin of USB TypeC1 is used for the control and status information of DisplayPort projection.

[0119] Step 4: The PD controller chip recognizes that the other party is a PD protocol device through the CC pin of USB TypeC2 (also known as USB2 Type-C, charging interface). The SOC applies for the online voltage / online current required by the device through the software code state machine area, and the adapter will output VBUS for power supply; the output VBUS is converted into VBATT by the charge pump chip through OVP2&3 to charge the battery.

[0120] Step 5: SOC controls the SW IC chip of DP&DM SW through the GPIO of SW EN, and cuts the hardware path of DP&DM of USB TypeC2 to the QC controller chip. The QC controller chip can recognize that the adapter is a QC protocol adapter through the DP&DM pin of USB TypeC2. SOC applies for the online voltage / online current required by the device through the software code state machine area, and the adapter will output VBUS for power supply; the output VBUS is converted into VBATT by the charge pump chip through OVP2&3 to charge the battery.

[0121] Step 6: SOC controls the SW IC chip of DP&DM SW through the GPIO of SW EN, and cuts the hardware path of DP&DM of USB TypeC2 to the SW Charge chip. When the battery is low on power, the SW Charge chip can take over the battery for trickle charging to activate the battery. The VBUS provided by the adapter is converted into VBATT through OVP2&3 and the SW Charge chip to charge the battery.

[0122] Step 7: Use Fuel Gauge to calculate the battery power and connect to SOC through the I2C interface. The Fuel Gauge chip will report the battery voltage / temperature / power / remaining available capacity and other status in a timely manner.

[0123] It should be understood that when charging and data transmission are performed simultaneously, step 1 and step 4 can be performed simultaneously. That is, the charging function and the screen projection function are parallel functions.

[0124] Through the above steps, the electronic device can simultaneously recognize two Type C ports, Type C1 and Type C2, support multiple charging protocols and simultaneously support data projection, thereby improving charging efficiency and device usage experience. It enables users to perform data projection while charging.

[0125] In addition, unless otherwise specified, each functional unit / module in each embodiment of the present application may be integrated into one unit / module, each unit / module may exist physically separately, or two or more units / modules may be integrated together. The above-mentioned integrated unit / module may be implemented in the form of hardware or in the form of a software program module.

[0126] In the above embodiments, the description of each embodiment has its own emphasis. For the part not described in detail in a certain embodiment, please refer to the relevant description of other embodiments. The technical features of the above embodiments can be combined arbitrarily. In order to make the description concise, all possible combinations of the technical features in the above embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0127] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An electronic device, characterized in that: The electronic device comprises: an energy storage unit, a control unit, a charging interface, a screen projection interface, a first circuit and a second circuit; The first circuit is connected to the charging interface and the energy storage unit respectively to form a charging path for the electronic device, and the second circuit is connected to the screen projection interface and the energy storage unit respectively to form a screen projection power supply path for the electronic device; the control unit is connected to the first circuit and the second circuit respectively; The control unit is used to transmit the projection data to the external projection device through the projection power supply path, and to charge the energy storage unit through the charging path while supplying power to the external projection device; Among them, the charging interface and the screen projection interface are both USB Type-C interfaces.

2. The electronic device according to claim 1, characterized in that: The first circuit includes: a first control module, a first overvoltage protection module, a fast charging module and a main charging module; The first control module is connected to the charging interface and the control unit respectively, and the first overvoltage protection module is connected to the charging interface, the fast charging module and the main charging module respectively; the fast charging module is also connected to the control unit and the energy storage unit respectively; the main charging module is also connected to the energy storage unit and the control unit respectively; The main charging module is configured to, when detecting that the charging interface is connected to an external charging device, detect the type of the first target device through the first control module if the external charging device is a first target device, and send the type of the first target device to the control unit; The control unit is used to communicate with the first target device according to the type of the first target device, so that the first target device outputs corresponding current and voltage to charge the energy storage unit.

3. The electronic device according to claim 2, characterized in that: If the first target device is a power adapter, the control unit communicates with the power adapter so that the power adapter outputs a first target current and a first target voltage, and charges the energy storage unit through the first overvoltage protection module and the fast charging module; If the first target device is not a power adapter, the control unit communicates with the first target device so that the first target device outputs a second target current and a second target voltage, and charges the energy storage unit through the first overvoltage protection module and the main charging module; the first target current is greater than the second target current, and the first target voltage is greater than the second target voltage.

4. The electronic device according to claim 2, characterized in that: The first circuit further includes: a second control module and a switching module; The switching module is respectively connected to the charging interface, the second control module, the main charging module and the control unit, and the first control module is also connected to the control unit; The main charging module is configured to, when detecting that the charging interface is connected to an external device, detect the type of the second target device through the second control module if the external device is a second target device, and send the type of the second target device to the control unit; The control unit is used to communicate with the second target device according to the type of the second target device, so that the target device outputs a target voltage and a target current to charge the energy storage unit.

5. The electronic device according to claim 4, characterized in that: The switching module comprises a first path and a second path, wherein the first path is a default path of the switching module; The control unit is further used to switch the first path to the second path; The second control module detects the type of the second target device through the second path.

6. The electronic device according to claim 5, characterized in that: If the second target device is a power adapter, the control unit communicates with the power adapter so that the power adapter outputs a third target current and a third target voltage, and charges the energy storage unit through the first overvoltage protection module and the fast charging module; If the second target device is not a power adapter, the control unit communicates with the second target device so that the second target device outputs a fourth target current and a fourth target voltage, and charges the energy storage unit through the first overvoltage protection module and the main charging module; the third target current is greater than the fourth target current, and the third target voltage is greater than the fourth target voltage.

7. The electronic device according to claim 3, characterized in that: The first circuit further includes: a power collection unit; The power collection unit is connected to the energy storage unit and the control unit respectively; The power collection unit is used to collect the power information of the energy storage unit and send the power information to the control unit.

8. The electronic device according to claim 7, characterized in that: The control unit is also used for: When it is determined according to the power information that the energy storage unit is low on power, the energy storage unit is trickle charged by the main charging module.

9. The electronic device according to any one of claims 1 to 8, characterized in that: The second circuit includes: a third control module and a second overvoltage protection module; The second overvoltage protection module is respectively connected to the screen projection interface, the control unit, and the third control module, the third control module is also respectively connected to the control unit and the energy storage unit, and the screen projection interface is also connected to the control unit; The third control module is used to identify the external screen projection device when it is detected that the screen projection interface is connected to the external screen projection device, and send the identification result to the control unit; The control unit is used to transmit data to the external screen projection device through the screen projection interface according to the recognition result.

10. The electronic device according to claim 9, characterized in that: The third control module is specifically used for: Based on the identification result of the external screen projection device, when it is determined that the external screen projection device is a third target device, communicate with the third target device to determine the identity of the third target device and the supported data transmission mode, and send the identity of the third target device and the supported data transmission mode to the control unit.

11. The electronic device according to claim 10, characterized in that: The control unit is further used for: The energy storage unit is controlled to supply power to the third target device; the electric energy supplied by the energy storage unit is transmitted to the third target device through the third control module and the second overvoltage protection module.

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