Terminal equipment and transportation tool

Abstract

The embodiment of the utility model provides terminal equipment and a transportation tool, the terminal equipment comprises a power supply interface, a first processor and a second processor, the power supply interface is used for being connected with power supply equipment, the first processor is connected with the power supply interface, and the second processor is connected with the power supply interface and the first processor. The power interface is used for accessing a power supply device, the first processor is used for loading a charging protocol driver to request the power supply device to provide a first target voltage when detecting that the power interface accesses the power supply device, and the second processor is used for loading a charging protocol driver to request the power supply device to provide a second target voltage when the power interface receives the first target voltage provided by the power supply device. And starting the operating system. Through the arrangement of the first processor, the time required from the connection of the power supply equipment to the power interface to the completion of the loading of the charging protocol driver can be shortened, negotiation with the power supply equipment can be carried out in time, the phenomenon of power failure is avoided, and the normal operation of the terminal equipment is ensured.

Description

Technical Field

[0001] The present application relates to the technical field of electronic equipment, and in particular to a terminal device and a means of transportation. Background Art

[0002] Most of the terminal devices on the market (such as tablets, laptops, etc.) have built-in batteries to power the operation of the terminal devices, which results in high cost and large size of the terminal devices. The presence of batteries limits the product design of the terminal devices.

[0003] At present, in order to solve the problem that the battery affects the product structure of the terminal device, some terminal devices are designed without batteries, thereby reducing the weight of the terminal device and reducing the cost. However, the battery-free terminal device is prone to power failure during the power supply process of the external power supply, which affects the normal use of the terminal device. Utility Model Content

[0004] The embodiments of the present application disclose a terminal device and a means of transportation. The terminal device does not need to be equipped with a battery and will not experience a power outage, so the terminal device can operate normally.

[0005] The present application discloses a terminal device, including:

[0006] Power interface, used to connect to power supply equipment;

[0007] A first processor is connected to the power interface, and is used to load a charging protocol driver to request the power supply device to provide a first target voltage when detecting that the power interface is connected to the power supply device;

[0008] The second processor is connected to the power interface and the first processor respectively, and the second processor is used to start the operating system when the power interface receives the first target voltage provided by the power supply device.

[0009] As an optional implementation manner, the first processor includes a detection pin, and the first processor is connected to the power interface through the detection pin;

[0010] The first processor is further configured to detect the voltage of the detection pin when it is detected that the power interface is connected to a device, and load the charging protocol driver if it is determined based on the voltage that the power interface is connected to a power supply device.

[0011] As an optional implementation, the first processor further includes a register;

[0012] The power interface is further used to receive identification information sent by the power supply device;

[0013] The first processor is further configured to receive the identification information transmitted by the power interface, and write the identification information into the register;

[0014] The second processor is further configured to read the identification information in the register, and start an operating system if the identification information indicates that the power supply device is a target type of power supply device.

[0015] As an optional embodiment, the terminal device also includes a first protection circuit, and the first protection circuit, the power interface and the detection pin of the first processor form a data transmission path, and the first protection circuit is used to disconnect the data transmission path when the voltage of the detection pin is greater than a first preset voltage.

[0016] As an optional implementation, the terminal device further includes a first hub, the first hub includes a first PD chip, the power interface is provided in the first hub, and the first PD chip is respectively connected to the power interface and the first processor;

[0017] The first processor is further configured to load a charging protocol driver and send a required target voltage value to the first PD chip when detecting that the power interface is connected to the power supply device;

[0018] The first PD chip is used to request the power supply device to provide a first target voltage matching the target voltage value according to the target voltage value.

[0019] As an optional implementation, the terminal device includes a second hub, and the first processor and the power interface are arranged on the second hub.

[0020] As an optional embodiment, the terminal device also includes a voltage regulating module, which is respectively connected to the power interface, the first processor and the second processor, and is used to convert a first target voltage received by the power interface into a second target voltage, and provide the second target voltage to the first processor and the second processor respectively, and the second target voltage is lower than the first target voltage.

[0021] As an optional implementation, the terminal device further includes a bypass module, the power interface, the bypass module and the first processor form a first power supply path, and the power interface, the bypass module and the second processor form a second power supply path; wherein,

[0022] The bypass module is used to conduct the first power supply path and the second power supply path when the difference between the voltage received by the power interface and the second target voltage is less than a preset threshold, so as to directly provide the voltage received by the power interface to the first processor and the second processor.

[0023] As an optional implementation, the terminal device further includes a second protection circuit, and the power interface, the second protection circuit and the voltage regulating module form a third power supply path; wherein,

[0024] The second protection circuit is used to disconnect the third power supply path when the voltage received by the power interface is greater than a second preset voltage.

[0025] The present application embodiment discloses a means of transport, including:

[0026] Any terminal device disclosed in the embodiments of the present application; and

[0027] A power supply device is used to connect to the power interface of the terminal device and provide a first target voltage for the terminal device.

[0028] Compared with the related art, the embodiments of the present application have the following beneficial effects:

[0029] The embodiment of the present application provides a terminal device and a means of transportation, the terminal device includes a power interface, a first processor and a second processor, wherein the power interface is used to access a power supply device, the first processor is connected to the power interface, and the second processor is connected to the power interface and the first processor respectively. The power interface is used to access a power supply device, the first processor is used to load a charging protocol driver when detecting that the power interface is connected to the power supply device, so as to request the power supply device to provide a first target voltage, and the second processor is used to start an operating system when the power interface receives the first target voltage provided by the power supply device. The terminal device is provided with a first processor, and the first processor is connected to the power interface and the second processor respectively. When the first processor detects that the power interface is connected to the power supply device, it loads the charging protocol driver, which can shorten the time required from the power supply device being connected to the power interface to the completion of the loading of the charging protocol driver, and timely negotiates with the power supply device to avoid power failure, thereby ensuring the normal operation of the terminal device. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 This is a schematic diagram of a PD negotiation process disclosed in an embodiment of the present application;

[0032] Figure 2 This is one of the structural schematic diagrams of a terminal device disclosed in an embodiment of the present application;

[0033] Figure 3 This is the second structural diagram of a terminal device disclosed in an embodiment of the present application;

[0034] Figure 4 This is the third structural diagram of a terminal device disclosed in an embodiment of the present application;

[0035] Figure 5 This is the fourth structural diagram of a terminal device disclosed in an embodiment of the present application;

[0036] Figure 6 This is the fifth structural diagram of a terminal device disclosed in an embodiment of the present application;

[0037] Figure 7 This is the sixth structural diagram of a terminal device disclosed in an embodiment of the present application;

[0038] Figure 8 is a schematic diagram of a packaging structure of a first processor disclosed in an embodiment of the present application;

[0039] Fig. 9 It is a schematic diagram of the structure of a transportation tool disclosed in an embodiment of the present application. DETAILED DESCRIPTION

[0040] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0042] It is understood that the terms "first", "second", etc. used in this application may be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish a first element from another element. For example, without departing from the scope of this application, a first resistor may be referred to as a second resistor, and similarly, a second resistor may be referred to as a first resistor. Both the first resistor and the second resistor are resistors, but they are not the same resistor.

[0043] It can be understood that the “connection” in the following embodiments should be understood as “electrical connection”, “communication connection”, etc. if the connected circuits, modules, units, etc. have electrical signals or data transmission between each other.

[0044] When used herein, the singular forms "a", "an", and "said / the" may also include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include / comprise" or "have" and the like specify the presence of stated features, wholes, steps, operations, components, parts, or combinations thereof, but do not exclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof. At the same time, the term "and / or" used in this specification includes any and all combinations of the relevant listed items.

[0045] In the related art, the process of PD (Power Delivery Protocol) negotiation adopts a question-and-answer format. The successful negotiation process of a fixed voltage gear requirement is as follows: Figure 1 As shown, steps 101 to 108 may be included.

[0046] Step 101: The source end (SRC) sends a capability message (Source_Cap message) to broadcast the power supply types and gears that the source end can support.

[0047] Step 102, when the sink (SNK) successfully receives the capability message and decodes it successfully, the sink replies with a first successful reception command (GOODCRC).

[0048] Step 103, the sink selects a suitable power supply type and gear from the power supply types and gears supported by the source, and replies with a request message to make the request.

[0049] Step 104, when the source end successfully receives the request message and decodes it successfully, the source end replies with a second successful reception instruction.

[0050] Step 105: If the power supply type and gear requested by the sink meet the capability of the source, the source replies with an Accept message to indicate acceptance.

[0051] Step 106: After receiving the receiving message, the suction end replies with a third successful receiving instruction.

[0052] Step 107, the source adjusts the supply voltage (VBUS voltage) to the voltage requested by the sink, and then sends a ready command (PS_RDY) to the sink.

[0053] Step 108, after receiving the ready instruction, the suction end sends a fourth successful reception instruction.

[0054] Through the above process, the power supply voltage of the source end has been adjusted to the voltage range required by the sink end, and PD negotiation is completed.

[0055] The inventor has found that when a terminal device (such as a tablet computer) does not have a battery, the terminal device is in a shutdown state. When the terminal device is plugged into a PD charger, the terminal device will sequentially enter the LK (Little Kernel) stage and the operating system kernel stage, and finally enter the desktop (an interface displaying icons). The terminal device starts loading the PD driver program only after entering the kernel stage to achieve PD negotiation with the PD charger so that the power supply voltage of the PD charger rises to the target voltage. For a tablet computer, the target voltage is generally 12VV, and the target voltage is locked by software. Then the terminal device wakes up the initialization system normally, that is, enters the desktop, and powers the terminal device with the 12V voltage provided by the PD charger. However, since the PD charger sends a capability message when it is connected to the terminal device, it sends the capability message a preset number of times (such as 50 times). After that, the shortest duration of sending capability messages is generally 5 seconds, and the charger stops sending capability messages. Since it takes a long time for the terminal device to load the PD driver after the PD charger is inserted, the terminal device may not be loaded until the charger stops sending capability messages. At this time, the terminal device will send a hard reset (HardReset) command to try to let the PD charger resend the capability message for PD negotiation, but the hard reset command will cause the PD charger's power supply voltage to drop to 0V, and the power-off duration is 660ms to 1000ms. If the terminal device does not have a battery, the terminal device will lose power. At the same time, if the terminal device has a software vulnerability (bug) and hardware damage, it may also cause power failure. Although adding a large capacitor to the power input end of the terminal device can slow down the power failure, the risk of power failure still exists, and due to the addition of a large capacitor, the terminal device also needs to reserve space for the large capacitor. In the related art, when most PD chargers receive a hard reset command, the supply voltage will drop to 0V. Therefore, there are few types of PD chargers whose supply voltage will not be adjusted to 0V when receiving a hard reset command, and the range of choices for users is small.

[0056] In view of this, the embodiments of the present application disclose a terminal device and a transportation tool, wherein the terminal device does not need to be provided with a battery and will not experience a power outage, and the terminal device can operate normally.

[0057] Please refer to Figure 2 , which shows one of the structural schematic diagrams of a terminal device provided in an embodiment of the present application, such as Figure 2 As shown, the terminal device may include a power interface 210, a first processor 220 and a second processor 230, wherein the first processor 220 is connected to the power interface 210, the second processor 230 is respectively connected to the power interface 210 and the first processor 220, and the second processor 230 is respectively connected to the power interface 210 and the first processor 220. The power interface 210 is used to access a power supply device, the first processor 220 is used to load a charging protocol driver when detecting that the power interface 210 is connected to the power supply device to request the power supply device to provide a first target voltage, and the second processor 230 is used to start the operating system when the power interface 210 receives the first target voltage provided by the power supply device.

[0058] It should be noted that the first target voltage is used to provide voltage for the load operation of the terminal device, the charging protocol can be used to achieve high-power charging of the terminal device, and the charging protocol driver is used to implement the negotiation and communication between the first processor 220 and the power supply device. Starting the operating system can be understood as the second processor entering the LK stage, and then entering the Kernel until entering the desktop. The power supply device is used to provide a power supply voltage to the terminal device. The power supply device can negotiate with the terminal device to provide a voltage value for the terminal device that matches the power supply voltage of the terminal device. Among them, the power supply device can also provide the terminal device with the power supply current required by the terminal device, and the current value of the power supply current can be 3A. The second processor 230 is used to implement the main functions of the terminal device. The second processor 230 integrates the key parts of the terminal device, including a complete system and all the contents of the embedded software. When the power supply device is connected to the power supply interface 210, the power supply device will provide an initial voltage to the power supply interface 210, which is generally less than the voltage value of the power supply voltage required by the terminal device. The first processor 220 is turned on under the action of the first voltage, and when it is detected that the power supply interface 210 is connected to the power supply device, the charging protocol driver is loaded. When the charging protocol driver is loaded, the first processor 220 will negotiate charging with the power supply device without having to negotiate charging with the power supply device through the second processor 230. Optionally, the power supply interface 210 may include a Type-C interface, the charging protocol driver includes a PD driver, the first processor 220 may be a PD chip with an MCU (Microcontroller Unit), the first processor 220 may also include an MCU and a PD chip, and the MCU is connected to the PD chip, and the second processor 230 may include a system-level chip. Optionally, the second processor 230 may not burn the charging protocol driver, and the voltage value of the first target voltage may be 12V. Optionally, the first processor 220 is a PD chip with an MCU, and a PD driver is pre-burned in the MCU. The first processor 220 is used to load the pre-burned charging protocol driver when it is detected that the power interface 210 is connected to the power supply device. In this embodiment, the first processor 220 can load the PD driver when it is detected that the power interface 210 is connected to the power supply device. Compared with the system-level chip loading the PD driver, the time required from the power supply device connecting to the power interface 210 to the completion of the PD driver loading is greatly shortened, thereby avoiding the risk of power failure. It should be noted that the power supply device takes at least 5 seconds to send 50 capability messages, and the time required from the power supply device connecting to the power interface 210 to the first processor 220 loading the PD driver is less than 5 seconds. It can be seen that this embodiment can completely avoid the risk of power failure caused by the time required to complete the loading of the PD driver, and greatly improve the reliability of the terminal device.

[0059] Please continue to refer to Figure 2 The power interface 210 may include a first power pin A1 and a first detection pin A2. The first power pin A1 is used to receive a first target voltage provided by a power supply device. The second processor 230 is connected to the first power pin A1 to receive the first target voltage to meet the requirements of starting the operating system. When the device is connected to the power interface, the first detection pin A2 is connected to the second detection pin of the power supply device. The second detection pins of different types of devices are connected to different circuits. The first processor 220 is connected to the first detection pin A2 to detect whether the device connected to the power interface is a power supply device.

[0060] In an embodiment of the present application, a first processor 220 is set in the terminal device, and the first processor 220 is connected to the power interface 210 and the second processor 230 respectively. When the first processor 220 detects that the power interface 210 is connected to the power supply device, it loads the charging protocol driver, and requests the power supply device to provide a first target voltage through the first processor 220, so that the second processor 230 can use the first target voltage received by the power interface 210 to start the operating system, so that the terminal device does not need to be equipped with a battery, and the normal operation of the terminal device can be guaranteed, which can reduce the size of the terminal device.

[0061] Since the charging protocol driver is burned in the first processor 220, the first processor 220 loads the charging protocol driver when it detects that the power interface 210 is connected to the power supply device. This can shorten the time required from the power supply device being connected to the power interface 210 to the completion of the loading of the charging protocol driver, avoid the risk of power failure, and ensure the reliability of the battery-free terminal device. At the same time, it is also unnecessary to set a large capacitor in the terminal device to slow down power failure, thereby further reducing the size of the terminal device.

[0062] Furthermore, the present embodiment can power the terminal device through any power supply device that supports the charging protocol, that is, when a hard reset command is received, regardless of whether the power supply voltage of the power supply device will drop to 0V, the power supply device can be used to power the terminal device, and the terminal device will not face the risk of power failure, thereby ensuring the normal operation of the terminal device. The terminal device provided by the embodiment of the present application is highly practical.

[0063] Please refer to Figure 3, which shows the second structural schematic diagram of a terminal device provided by this embodiment, the first processor 220 may also include a detection pin, and the first processor 220 is connected to the power interface 210 through the detection pin. The first processor 220 is also used to detect the voltage of the detection pin of the first processor 220 when it is detected that the power interface 210 is connected to the device. If it is determined that the power interface 210 is connected to the power supply device according to the voltage of the detection pin of the first processor 220, the charging protocol driver is loaded.

[0064] It should be noted that, for the sake of ease of description, the detection pin of the first processor 220 is referred to as the third detection pin below. The third detection pin of the first processor 220 is connected to the first detection pin of the power interface 210. When the power supply device is connected to the power interface 210, a path is formed between the second detection pin of the power supply device and the first detection pin, so the power supply device affects the voltage of the third detection pin. The first processor 220 can determine whether the device connected to the power interface 210 is a power supply device based on the voltage of the third detection pin, and when it is determined that the power interface 210 is connected to the power supply device, the charging protocol driver is loaded, and the charging negotiation with the power supply device is realized through the first processor 220. Optionally, if the power interface is a Type-C interface, the detection pin is a configuration channel (CC) pin.

[0065] In one embodiment, please continue to refer to Figure 3 The first detection pin includes a first detection sub-pin A21 and a second detection sub-pin A22, and the second detection pin includes a third detection sub-pin ( Figure 3 ) and the fourth detection sub-pin ( Figure 3 (not shown), the third detection pin includes a fifth detection sub-pin A31 and a sixth detection sub-pin A32. It should be noted that the power supply device includes a connection interface that matches the power interface 210. For example, the power interface 210 is a Type-C female socket, and the connection interface can be a Type-C male socket. Two detection pins are set in the power interface 210, the first processor 220 and the power supply device, which can identify whether the connection interface and the power interface 210 are plugged in forward or reverse. Optionally, when the power supply device is connected to the power interface 210, if the voltage of the first detection sub-pin changes, it can be considered as a forward plug, and if the voltage of the second detection sub-pin changes, it can be considered as a reverse plug.

[0066] Optionally, please continue to refer to Figure 3The terminal device may include a first pull-down resistor Rd1 and a second pull-down resistor Rd2, wherein the first end of the first pull-down resistor Rd1 is connected to the fifth detection sub-pin A31 and the first detection sub-pin A21, the second end of the first pull-down resistor Rd1 is connected to the ground terminal of the terminal device, the first end of the second pull-down resistor Rd2 is connected to the sixth detection sub-pin A32 and the second detection sub-pin A22, and the second end of the second pull-down resistor Rd2 is connected to the ground terminal of the terminal device. The power supply device may include a first pull-up resistor and a second pull-up resistor, wherein the first end of the first pull-up resistor is connected to the third detection sub-pin, the second end of the first pull-up resistor is connected to the voltage input terminal of the power supply device, the first end of the second pull-up resistor is connected to the fourth detection sub-pin, and the second end of the second pull-up resistor is connected to the voltage input terminal of the power supply device. It can be seen that when the power supply interface 210 is connected to the power supply device, the voltage of the fifth detection sub-pin A31 or the sixth detection sub-pin A32 will be pulled up. The first processor 220 is also used to detect the voltage of the fifth detection sub-pin A31 and the voltage of the sixth detection sub-pin A32 when it is detected that the power interface 210 is connected to the device. If the voltage of the fifth detection sub-pin A31 or the voltage of the sixth detection sub-pin A32 is greater than the third preset voltage, it is determined that the power interface 210 is connected to the power supply device and the charging protocol driver is loaded. It can be understood that the third preset voltage is greater than the first voltage and less than the second voltage. The first voltage is the voltage of the fifth detection sub-pin A31 (or the voltage of the sixth detection sub-pin A32) when the power interface 210 is not connected to the power supply device; the second voltage is the voltage of the fifth detection sub-pin A31 (or the voltage of the sixth detection sub-pin A32) when the power interface 210 is connected to the power supply device.

[0067] In this embodiment, a first processor 220 is set in the terminal device, and the first processor 220 detects the voltage of the third detection pin of the first processor 220 when detecting that the power interface 210 is connected to the device. If it is determined according to the voltage of the third detection pin that the power interface 210 is connected to the power supply device, the charging protocol driver is loaded. The first processor 220 can quickly load the charging protocol driver when the power interface 210 is connected to the power supply device, shorten the time required to respond to the capability message sent by the power supply device, avoid the risk of power failure, and ensure the reliability of the terminal device without a battery.

[0068] Please continue to refer to Figure 3 In one embodiment, the terminal device may also include a first protection circuit 310. The first protection circuit 310, the power interface 210 and the third detection pin of the first processor 220 form a data transmission path. The first protection circuit 310 is used to disconnect the data transmission path when the voltage of the third detection pin is greater than the first preset voltage.

[0069] It should be noted that the first preset voltage can be used to measure whether the voltage of the third detection pin is too large. When the voltage of the third detection pin is greater than the first preset voltage, it can be considered that the voltage of the third detection pin is too large. The power interface 210 may include multiple pins, and the third detection pin may be short-circuited with other pins in the power interface 210, such as the first power pin A1, resulting in the voltage of the third detection pin of the first processor 220 being too large. The first protection circuit 310 is also used to disconnect the data transmission path when the current of the third detection pin is greater than the first preset current. Optionally, the first protection circuit 310 may include an overvoltage protection circuit (OVP) and an overcurrent protection circuit (OCP).

[0070] Optionally, a first data sub-path is formed between the first detection sub-pin A21 of the power interface 210, the first protection circuit 310, and the fifth detection sub-pin A31 of the first processor 220, and a second data sub-path is formed between the second detection sub-pin A22 of the power interface 210, the first protection circuit 310, and the sixth detection sub-pin A32 of the first processor 220, and the first protection circuit 310 is further used to disconnect the first data sub-path when the voltage of the first detection sub-pin A21 is greater than the first preset voltage or the current of the first detection sub-pin A21 is greater than the first preset current. The first protection circuit 310 is further used to disconnect the second data sub-path when the voltage of the second detection sub-pin A22 is greater than the first preset voltage or the current of the second detection sub-pin A22 is greater than the first preset current.

[0071] In this embodiment, a first protection circuit 310 is set up. The first protection circuit 310 is used to disconnect the data transmission path when the voltage of the third detection pin is greater than the first preset voltage, thereby avoiding the phenomenon that the first processor 220 is damaged due to excessive voltage of the third detection pin, thereby improving the safety of the terminal device.

[0072] In one embodiment, the first processor 220 may further include a register, the power interface 210 is further used to receive identification information sent by the power supply device, and the first processor 220 is further used to receive identification information transmitted by the power interface 210 and write the identification information into the register. The second processor 230 is further used to read the identification information in the register, and if the identification information indicates that the power supply device is a target type of power supply device, the operating system is started.

[0073] It should be noted that the identification information is used to indicate the type of power supply device, the type of power supply device corresponds to the charging protocol supported by the power supply device, the power supply device can output the identification information of the power supply device through the second detection pin, the first detection pin A2 of the power interface 210 receives the identification information, and the second processor 230 receives the identification information transmitted by the first detection pin A2 through the third detection pin, and writes the identification into the register. Optionally, the target type of power supply device is a PPS (Programmable Power Supply) charger, which supports the PPS charging protocol. The PPS charging device allows the current and voltage to be changed gradually, which can reduce the conversion loss during the power supply process and ensure more efficient power supply.

[0074] Optionally, the second processor 230 may further include an I2C (Inter-Integrated Circuit) port, the I2C port of the second processor 230 is connected to the first processor 220, and the second processor 230 reads the identification information through the I2C port.

[0075] Optionally, the second processor 230 may also include a power management module, which is used to detect the voltage value of the first target voltage received by the power interface 210. The second processor 230 is also used to start the operating system if the identification information indicates that the power supply device is a power supply device of the target type and the voltage value of the first target voltage is the target voltage value. It should be noted that the target voltage value is a voltage value corresponding to the power supply voltage required for the normal operation of the terminal device, such as 12V. The process of the second processor 230 starting the operating system is: if the identification information indicates that the power supply device is a power supply device of the target type and the voltage value of the first target voltage is the target voltage value, then turn on the computer, this stage is the LK stage, then enter the Kernel stage, and finally enter the desktop, that is, the interface that the user can see.

[0076] In this embodiment, the identification information of the power supply device is written into the register by the first processor 220, so that the second processor 230 can determine the type of the power supply device according to the identification information, and only start the operating system when it is determined that the power supply device is a power supply device of the target type, thereby further improving the reliability of the terminal device.

[0077] Optionally, please continue to refer to Figure 3, the power interface 210 may also include a first data pin A41, a second data pin A42 and a third protection circuit 320. The third protection circuit 320, the first data pin A41 of the power interface 210 and the second processor 230 form a first transmission path, the third protection circuit 320, the first data pin A41 of the power interface 210 and the second processor 230 form a second transmission path, and the third protection circuit 320 is used to disconnect the first transmission path when the voltage of the first data pin A41 is greater than the fourth preset voltage. The fourth protection circuit is used to disconnect the second transmission path when the voltage of the second data pin A42 is greater than the fourth preset voltage. Optionally, the third protection circuit may include an overcurrent protection circuit and an overvoltage protection circuit. Optionally, the first data pin A41 may be a first data transmission pin (D+) and a second data transmission pin (D-) of the Type-C interface, and the first data transmission pin and the second data transmission pin are used to transmit USB data. It should be noted that the third protection circuit 320 is a port protection switch that complies with the Type-C specification and provides high voltage and surge protection.

[0078] Please refer to Figure 4 , which shows a third structural diagram of a terminal device provided in an embodiment of the present application, such as Figure 4 As shown, the terminal device further includes a second hub 410 , and the first processor 220 and the power interface 210 are both disposed on the second hub 410 .

[0079] It should be noted that, in addition to the integrated power interface 210, the second hub 410 may also include multiple data interfaces 420, which may include but are not limited to USB-A interfaces, USB 3.0 interfaces, Ethernet interfaces, and HDMI (High Definition Multimedia Interface) interfaces. The interface types corresponding to the multiple data interfaces 420 may be partially the same, completely the same, or completely different. In this embodiment, the second hub 410 is provided in the terminal device, which can expand the number of interfaces of the terminal device and enable the second processor 230 of the terminal device to interact with various types of devices.

[0080] Optionally, please continue to refer to Figure 4 The second hub 410 may further include a hub processing module 430, which is connected to the plurality of data interfaces respectively, and is used to send the first transmission data received by the plurality of data interfaces to the corresponding ports or pins of the second processor 230, and send the second transmission data output by the second processor 230 to the corresponding data interface. Optionally, the hub processing module 430 may include a switch.

[0081] Please refer to Figure 5, which shows a fourth structural diagram of a terminal device provided in an embodiment of the present application, such as Figure 5 As shown, the terminal device may further include a first hub 510, the first hub 510 includes a first PD chip 520, the power interface 210 is provided on the first hub 510, and the first PD chip 520 is respectively connected to the power interface 210 and the first processor 220. The first processor 220 is also used to load the charging protocol driver when it is detected that the power interface 210 is connected to the power supply device, and send the required target voltage value to the first PD chip 520, and the first PD chip 520 is used to request the power supply device to provide a first target voltage matching the target voltage value according to the target voltage value.

[0082] It should be noted that, similar to the second hub 410, the first hub 510 may include multiple data interfaces 420 in addition to the integrated power interface 210. The data interface 420 may include but is not limited to a USB-A interface, a USB3.0 interface, an Ethernet port, and an HDMI interface. Since the PD chips in most types of hubs currently cannot write drivers, this embodiment provides a method of setting a first processor 220 in a terminal device. When the first processor 220 detects that the power interface 210 is connected to a power supply device, it loads a charging protocol driver and sends the required target voltage value to the first PD chip 520 of the first hub 510, so that even if the first PD chip 520 does not have an MCU, it can request the power supply device to provide the first target voltage required by the terminal device, thereby increasing the selectable types of the hub. It should be noted that the second processor mounts a USB controller (USB control) to interact with the device connected to the data interface.

[0083] Please refer to Figure 6 , which shows a fifth structural diagram of a terminal device provided in an embodiment of the present application, such as Figure 6 As shown, the terminal device may further include a voltage regulating module 610, which is respectively connected to the power interface 210, the first processor 220 and the second processor 230, and is used to convert the first target voltage received by the power interface 210 into a second target voltage, and provide the second target voltage to the first processor 220 and the second processor 230, respectively, wherein the second target voltage is less than the first target voltage. Optionally, the voltage regulating module 610 is connected to the first power pin A1 to adjust the first target voltage.

[0084] It should be stated that Figure 7 As shown, in addition to the first processor 220 and the second processor 230, the terminal device may also have other functional devices, such as Figure 7The first functional device 710 and the second functional device 720 shown in the figure, therefore, the voltage value of the first target voltage requested by the first processor 220 is generally higher than the operating voltage of the first processor 220 and the second processor 230, and the voltage regulating module 610 is set in the terminal device to provide a matching operating voltage for the first processor 220 and the second processor 230. Optionally, the voltage regulating module may include a step-down circuit (Buck circuit). Optionally, the input voltage range of the voltage regulating module includes 4V to 15V, and the output voltage range includes 0.9V to 6V. Optionally, the voltage value of the electrical signal output by the voltage regulating module is 4V, and the current value is 6A.

[0085] In one embodiment, please continue to refer to Figure 7 The terminal device may further include a boost module 730, which may include an input terminal, an output terminal and an enable terminal, and the input terminal of the boost module 730 is connected to the output terminal of the voltage regulating module ( Figure 7 ), the output end of the boost module 730 is connected to the first processor 220, the enable end of the boost module 730 is connected to the second processor 230, and the boost module 730 is used to boost the second target voltage output by the voltage regulating module to provide the third target voltage obtained by the boosting process to the first processor 220, wherein the third target voltage is greater than the second target voltage. It should be noted that by setting the boost module 730 and connecting the output end of the boost module 730 to the first processor 220, even if the working voltage of the first processor 220 is higher than the working voltage of the second processor 230, the boost module 730 can be used to boost the second target voltage to meet the working requirements of the first processor 220. By connecting the second processor 230 to the enable end of the boost module 730, the enable state of the boost module 730 is controlled by the second processor 230, ensuring that the boost module 730 works only when the working voltage required by the first processor 220 is higher than the second target voltage, thereby avoiding excessive voltage provided to the first processor 220. Optionally, when the first processor includes an E-Marker (Electronically Marked, cable electronic label) chip, the second processor 230 outputs a first enable signal to the boost module 730, so that the boost module 730 adjusts the second target voltage to boost the voltage to a third target voltage to power the first processor 220. Optionally, the voltage value of the electrical signal output by the boost module 730 is 5V, and the current value is 1A. Optionally, the boost module 730 may include a boost circuit (Boost circuit).

[0086] In one embodiment, please continue to refer to Figure 7The terminal device may further include a voltage conversion module 740, which is connected to the first power pin A1 of the power interface 210, the first functional device 710 and the second functional device 720 respectively. The voltage conversion module 740 is used to convert the first target voltage received by the power interface 210 into a fourth target voltage, and provide the fourth target voltage to the first functional device 710 and the second functional device 720 respectively. The fourth target voltage is lower than the first target voltage. It should be noted that Figure 7 The functional devices included in the terminal device shown are only examples. The terminal device may include more functional devices or less than two functional devices. In this embodiment, a voltage conversion module 740 is set in the terminal device, and the first target voltage can be adjusted to a voltage matching the functional device to meet the working requirements of the functional device. Optionally, the voltage conversion module 740 may include a buck circuit. Optionally, the first functional device 710 may include at least one audio power amplifier (PA), and the second functional device 720 may include a flash chip. Optionally, the first functional device 710 includes two audio power amplifiers (PA).

[0087] In one embodiment, please continue to refer to Figure 7 The terminal device may further include a bypass module 750. The power interface 210, the bypass module 750 and the first processor 220 form a first power supply path, and the power interface 210, the bypass module 750 and the second processor 230 form a second power supply path. The bypass module 750 is used to conduct the first power supply path and the second power supply path when the difference between the voltage received by the power interface 210 and the second target voltage is less than a preset threshold value, so as to directly provide the voltage received by the power interface 210 to the first processor 220 and the second processor 230.

[0088] It should be noted that in the initial stage when the power supply device is connected to the power interface 210, the power supply device generally only provides a power supply voltage with a smaller voltage value. If the power supply voltage with a smaller voltage value is adjusted to the second target voltage through the voltage regulating module 610, the loss of the voltage regulating module 610 is very large. By setting the bypass module 750 in the terminal device, the voltage received by the power interface 210 can be directly provided to the first processor 220 and the second processor 230, meeting the working needs of the first processor 220 and the second processor 230, and also reducing the loss of the terminal device. Optionally, the bypass module may include a switch unit, which is connected in parallel with the voltage regulating module 610. The switch unit is used to be in a conducting state when the difference between the voltage received by the power interface 210 and the second target voltage is less than a preset threshold value, so as to provide the voltage received by the power interface 210 to the first processor 220 and the second processor 230 through the switch unit.

[0089] In one embodiment, please continue to refer to Figure 7 The terminal device may also include a second protection circuit 760. The power interface 210, the second protection circuit 760 and the voltage regulating module 610 form a third power supply path. The second protection circuit 760 is used to disconnect the third power supply path when the voltage received by the power interface 210 is greater than the second preset voltage.

[0090] It should be noted that the second preset voltage is used to measure whether the voltage received by the power interface 210 is too large. When the voltage received by the power interface 210 is greater than the second preset voltage, it can be considered that the voltage received by the power interface 210 is too large. The power interface 210 is used to receive the power supply voltage provided by the power supply device. When the power supply device fails or the charging negotiation fails, the voltage input from the power interface 210 may be very large. By setting the second protection circuit 760 in the terminal device, the third power supply path can be disconnected when the power supply voltage received by the power interface 210 is greater than the second preset voltage, thereby avoiding damage to the terminal device and improving the safety of the terminal device. Optionally, the second preset voltage can be lower than the maximum value in the input voltage range of the voltage regulating module 610. It should be noted that as long as the voltage value of the power supply voltage received by the power interface 210 is within the input voltage range, the voltage regulating module 610 can adjust the power supply voltage to the second target voltage, so as long as the second preset voltage is lower than the maximum value in the input voltage range of the voltage regulating module 610. Optionally, the voltage value of the second preset voltage is 16.9V.

[0091] Please refer to Figure 8 , which shows a schematic diagram of a packaging structure of a first processor provided in an embodiment of the present application, such as Figure 8 As shown, the first processor may include a power input pin 5V_IN, a first configuration channel pin CC1 and a second configuration channel pin CC2, a data signal pin SMBUS1_INT / GPIO4, a reset pin SMBUS1_INT / GPIO5 and a clock pin SMBUS1_INT / GPIO6. It should be noted that the PD chip sets two configuration channel pins that can be used to determine whether the device connected to the power interface 210 is a power supply device. The power input pin 5V_IN is connected to the output end of the voltage regulation module to obtain the second target voltage VSYS. The data signal pin SMBUS1_INT / GPIO4, the reset pin SMBUS1_INT / GPIO5 and the clock pin SMBUS1_INT / GPIO6 are respectively connected to the pins corresponding to the I2C port of the second processor so that the second processor can read the identification information. Optionally, as Figure 8 As shown, the terminal device further includes a first resistor R1 and a first capacitor C1 to ensure the stability of the voltage input to the power input pin 5V_IN.

[0092] In the related art, in the fields of automobiles, aircraft and elevators, terminal devices (such as tablet computers) with batteries and supporting fast charging protocols are commonly used. The cost of this type of terminal device is relatively high, and the battery will repeatedly have recharging problems when it is powered on for a long time, which affects the battery life of the terminal device. In view of this, the embodiment of the present application also provides a means of transportation.

[0093] Please refer to Fig. 9 , Fig. 9 Schematic diagram of a transport vehicle disclosed in an embodiment of the present application, wherein the transport vehicle may include but is not limited to a vehicle, an airplane, a ship, an elevator, etc. Fig. 9 As shown, the transport vehicle may include a terminal device 910 and a power supply device ( Fig. 9 The power supply device is used to connect to the power interface 210 of the terminal device 910, and is used to provide the first target voltage for the terminal device 910. It should be noted that the terminal device 910 may include but is not limited to a tablet computer, a laptop computer, and a smart phone, and the power supply device may include a charging adapter, a mobile power supply, etc. The description of the terminal device 910 and the power supply device can refer to the above embodiments, and will not be repeated here.

[0094] The transportation tool provided by the embodiment of the present application has the characteristic of being fixed for a long time, so the terminal device 910 can be powered by the power supply device on the transportation tool, and the terminal device 910 does not need to have its own battery, so that the area of ​​the terminal device and the number of electronic devices required to be set in the terminal device can be reduced, the weight of the terminal device 910 can be reduced, and the cost of the transportation tool can be reduced. The terminal device provided by this embodiment can be without a battery, and can operate normally like a terminal device with a battery, thereby ensuring the normal operation of the transportation tool, and at the same time, the phenomenon of affecting the practical life due to battery aging will not occur, thereby extending the service life of the transportation tool.

[0095] In the description of this specification, the descriptions with reference to the terms "some embodiments", "other embodiments", "ideal embodiments", etc., mean that the specific features, structures, materials, or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the utility model. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example.

[0096] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are 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.

[0097] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A terminal device, characterized in that: include: Power interface, used to connect to power supply equipment; A first processor is connected to the power interface, and is used to load a charging protocol driver program to request the power supply device to provide a first target voltage when detecting that the power interface is connected to the power supply device; The second processor is connected to the power interface and the first processor respectively, and the second processor is used to start the operating system when the power interface receives the first target voltage provided by the power supply device.

2. The terminal device according to claim 1, characterized in that: The first processor comprises a detection pin, and the first processor is connected to the power interface via the detection pin; The first processor is further configured to detect the voltage of the detection pin when it is detected that the power interface is connected to a device, and load the charging protocol driver if it is determined based on the voltage that the power interface is connected to a power supply device.

3. The terminal device according to claim 2, characterized in that: The first processor also includes a register; The power interface is further used to receive identification information sent by the power supply device; The first processor is further configured to receive the identification information transmitted by the power interface, and write the identification information into the register; The second processor is further configured to read the identification information in the register, and start an operating system if the identification information indicates that the power supply device is a target type of power supply device.

4. The terminal device according to claim 2, characterized in that: The terminal device also includes a first protection circuit, which forms a data transmission path with the first protection circuit, the power interface and a detection pin of the first processor. The first protection circuit is used to disconnect the data transmission path when the voltage of the detection pin is greater than a first preset voltage.

5. The terminal device according to claim 1, characterized in that: The terminal device further includes a first hub, the first hub includes a first PD chip, the power interface is arranged in the first hub, and the first PD chip is respectively connected to the power interface and the first processor; The first processor is further configured to load a charging protocol driver and send a required target voltage value to the first PD chip when detecting that the power interface is connected to the power supply device; The first PD chip is used to request the power supply device to provide a first target voltage matching the target voltage value according to the target voltage value.

6. The terminal device according to claim 1, characterized in that: The terminal device includes a second hub, and the first processor and the power interface are arranged on the second hub.

7. The terminal device according to claim 1, characterized in that: The terminal device also includes a voltage regulating module, which is respectively connected to the power interface, the first processor and the second processor. The voltage regulating module is used to convert a first target voltage received by the power interface into a second target voltage, and provide the second target voltage to the first processor and the second processor respectively. The second target voltage is lower than the first target voltage.

8. The terminal device according to claim 7, characterized in that: The terminal device further includes a bypass module, the power interface, the bypass module and the first processor form a first power supply path, and the power interface, the bypass module and the second processor form a second power supply path; wherein, The bypass module is used to conduct the first power supply path and the second power supply path when the difference between the voltage received by the power interface and the second target voltage is less than a preset threshold, so as to directly provide the voltage received by the power interface to the first processor and the second processor.

9. The terminal device according to claim 7 or 8, characterized in that: The terminal device also includes a second protection circuit, and the power interface, the second protection circuit and the voltage regulating module form a third power supply path; wherein, The second protection circuit is used to disconnect the third power supply path when the voltage received by the power interface is greater than a second preset voltage.

10. A means of transport, characterized in that: include: The terminal device according to any one of claims 1 to 9; A power supply device is used to connect to the power interface of the terminal device and provide a first target voltage for the terminal device.

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