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WO2011160572A1 - Procédé et dispositif de charge au travers d'une interface de bus série universel - Google Patents

Procédé et dispositif de charge au travers d'une interface de bus série universel Download PDF

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Publication number
WO2011160572A1
WO2011160572A1 PCT/CN2011/076001 CN2011076001W WO2011160572A1 WO 2011160572 A1 WO2011160572 A1 WO 2011160572A1 CN 2011076001 W CN2011076001 W CN 2011076001W WO 2011160572 A1 WO2011160572 A1 WO 2011160572A1
Authority
WO
WIPO (PCT)
Prior art keywords
serial bus
universal serial
module
usb
power supply
Prior art date
Application number
PCT/CN2011/076001
Other languages
English (en)
Chinese (zh)
Inventor
陈磊
Original Assignee
华为终端有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为终端有限公司 filed Critical 华为终端有限公司
Publication of WO2011160572A1 publication Critical patent/WO2011160572A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/00032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
    • H02J7/00036—Charger exchanging data with battery
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/00047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with provisions for charging different types of batteries

Definitions

  • USB Universal Serial Bus
  • the USB hardware interface usually has four lines and five lines. Generally, four lines are used, which are D+, D-, power and ground. According to the USB protocol, the external output current provided by the USB port power cable is limited to 500mA. Therefore, the charging function of the terminal often needs to be added with a current limit to prevent the risk of exceeding the current specified in the protocol and introducing the internal circuit of burning the PC or the notebook.
  • USB port on PC or USB after connecting with USB via cable, first, the power cable on the USB cable has a voltage of 5V. On the mobile phone, the voltage is used to trigger the corresponding interrupt. Trigger the phone to start the USB initialization module, and then complete the USB handshake function with the PC through the changes on the D+ and D- lines. After the USB handshake operation is completed, the mobile phone correctly recognizes that it is connected to a USB host device, and then can start the USB charging function, that is, connect the 5V voltage on the USB power cable to the charging circuit inside the mobile phone to start charging.
  • the USB port of a PC or laptop can provide up to 500mA of power supply capability, but when the USB is in the normal working mode, since the mobile phone must respond to USB commands from the PC at all times, the mobile phone cannot be allowed to enter the sleep mode, resulting in power consumption. It will be very large, reducing the current charged into the battery.
  • Embodiments of the present invention provide a method and apparatus for charging through a universal serial bus interface, which overcomes the problem of low charging efficiency through a USB interface in the prior art.
  • Embodiments of the present invention provide a method for charging through a universal serial bus interface, including:
  • the power supply device charges the device to be charged through the power line of the universal serial bus interface.
  • the embodiment of the present invention further provides an apparatus for charging through a universal serial bus interface, including: a universal serial bus interface, a universal serial bus module, a battery, and a power supply module, the device further includes: a control module;
  • the universal serial bus interface connects the device to the power supply device;
  • the control module is configured to close communication between the universal serial bus module and the power supply device;
  • the battery is used to charge a device to be charged by a power supply device through a power line of a universal serial bus interface.
  • the embodiment of the invention further provides a charging device with a universal serial bus interface, comprising: a universal serial bus interface, a power module, and a communication module, wherein the data line on the universal serial bus interface is connected to the communication module, and is universal The power line on the serial bus interface is connected to the power module, and the device further includes: a charging control module, configured to disconnect the data line on the universal serial bus interface connected to the communication module.
  • the embodiment of the invention adopts stopping communication between the USB module and the power supply device in the charged device, and then charging the charged device through the USB interface. Since the communication operation of the USB module is stopped in the method, when the device is charged through the USB interface, the USB module does not need to be in the working state all the time, so that the current is used for charging, thereby improving the charging efficiency.
  • FIG. 1 is a general flowchart of a method for charging through a USB interface according to an embodiment of the present invention
  • FIG. 2 is a specific flowchart of a method for charging through a USB interface according to an embodiment of the present invention
  • 3 is a schematic diagram of charging a mobile phone through a USB interface
  • FIG. 4 is a specific flowchart of another method for charging through a USB interface according to an embodiment of the present invention
  • FIG. 5 is a schematic structural diagram of an apparatus for charging through a USB interface according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of a charging device with a USB interface according to an embodiment of the present invention.
  • FIG. 1 is a general flowchart of a method for charging through a USB interface according to an embodiment of the present invention.
  • a method of charging via a USB interface provided in this embodiment is applied to a device that is charged through a USB interface, such as a mobile phone, an MP4, or the like.
  • the method may include:
  • Step 100 connect the device to be charged to the power supply device through a universal serial bus interface
  • Step 101 Turn off communication between the USB module and the power supply device
  • the communication with the USB module can be turned off, so that the data communication can not be performed between the devices connected through the USB interface; the USB module in the device that needs to be charged can be turned off, and the specific use of the USB module is provided.
  • the circuit is disconnected from the USB module, thereby turning off the USB module, so that data communication between the devices connected through the USB interface is impossible; or the central processing unit (CPU) in the device to be charged can be turned off, thereby making The USB module does not work, so data communication between devices connected via the USB interface is not possible.
  • Step 102 The power supply device charges the device to be charged through the power cable of the USB interface.
  • the phone can be charged because the power cord on the USB port is still connected properly.
  • a method of charging through the USB interface is realized.
  • the method stops communication between the USB module and the power supply device in the charged device, and then charges the charged device through the USB interface. Since the USB module is stopped in the method, when the device is charged through the USB interface, the USB module does not need to be in the working state all the time, so that the current is used for charging, thereby improving the charging efficiency.
  • step 101 uses different operations.
  • FIG. 2 is a specific flowchart of a method for charging through a USB interface according to an embodiment of the present invention. The method incorporates hardware design to stop communication between the USB module and the power supply device in the device being charged.
  • Step 200 connecting the device to be charged to the power supply device through a universal serial bus interface
  • Step 201 disconnect the data line that communicates with the USB module; Among them, a switch is added in the USB data line, and the communication between the charged device (such as a mobile phone) and a powered device (such as a PC) is terminated by controlling the opening and closing of the switch.
  • Figure 3 shows a mobile phone charging diagram through a USB interface. A triode is added to the data line in the mobile phone. The triode controls the on/off of D+ and D- through the control module in the mobile phone; the control module is based on the user's specific The operation is to issue a specific command.
  • the control module controls the transistor to be in an open state by controlling the transistor to be non-conducting, so that the USB module appears that the current D+ and D- lines are interrupted and are not connected. .
  • Step 202 The power supply device charges the device to be charged through the power cable of the USB interface.
  • the PC since the USB cable is plugged and unplugged in step 201, the PC is deceived, and in fact, the power cable on the USB interface is still connected normally, and the mobile phone can be charged.
  • the PC When the USB device exits, the PC will clear the relevant USB port.
  • the USB device will be disconnected from the mobile device and the USB module will be exited. In this way, the mobile phone can naturally enter the normal standby sleep mode. If the user chooses to exit the USB charging mode, the D+, D-line and the USB connection status of the mobile phone can be restored through the control module, so that both the PC and the mobile phone are standard new USB device connections.
  • a normal initialization communication is initiated to establish a connection. Therefore, the USB device can stop other modules in its own device from consuming power during the charging process, so that the charging efficiency is higher.
  • FIG. 4 is a specific flowchart of a method for charging through a USB interface according to an embodiment of the present invention.
  • the pure software in this method stops the communication between the USB module and the power supply device in the charged device.
  • Step 400 Connect the device to be charged to the power supply device through the universal serial bus interface.
  • Step 401 Stop supplying power to the USB module in the device to be charged, or turn off the working state of the CPU of the device to be charged; wherein, the universal serial bus module is connected to the central processing unit, and the universal serial bus module is controlled by the central processing unit. ;
  • the USB module in the charged device provides power through a separate power supply module (or a power supply circuit) for normal operation
  • the USB module can be powered by stopping the power supply module, so that the USB module is turned off. Therefore, communication between the USB module and the power supply device in the charged device is stopped.
  • the operation of the CPU in the charging device can be turned off, thereby stopping the operation of the USB module.
  • the specific operation may be: obtaining a signal to enter the charging mode; pinning out the voting decision of the USB module to allow the charging device to enter sleep; entering sleep. It should be understood that after the charging device enters sleep, the CPU in the charging device stops running, so the USB module stops working, that is, the communication between the USB module and the power supply device in the charged device is stopped, and the USB module does not consume power. .
  • Step 402 The power supply device charges the device to be charged through the power cable of the USB interface.
  • the method of charging through the USB interface can be implemented based on the foregoing steps 401 and 402.
  • the USB device connected to the PC is in an abnormal working state, and the pop-up "cannot be The recognized USB device "or” does not work properly with the USB device connected to the device.
  • the USB device connected to the PC is already charging. If the USB device connected to the PC needs to communicate with the PC and the user can choose to exit the USB charging mode, the software will re-execute the complete USB initialization process and re-establish a communication connection with the PC.
  • the method may further include: acquiring information entering the USB charging mode, and then triggering to perform step 101, S201 or step 401.
  • the mobile phone includes at least: a USB interface, a USB module, a battery, a power supply module, and a CPU.
  • the PC When the mobile phone is connected to the PC through the USB interface, the PC will charge the battery on the mobile phone through the power cable of the USB port.
  • the PC wants to pass the The communication of the USB module identifies the device having the USB port (ie, identifies the mobile phone); however, the control unit in the mobile phone controls the triode control circuit to set the triode control circuit to a non-conducting state at this time, and therefore, the triode control circuit is relative to Switch, the port of the USB port data line and USB module communication. At this time, the mobile phone is charged by the PC through the power cable of the USB interface.
  • the mobile phone can also turn off the working state of its own CPU; wherein, the USB module is connected to the central processing unit, and the USB module is controlled by the central processing unit; when the mobile phone is removed from the mobile phone, the operation of the USB module is stopped.
  • the specific operation may be: obtaining a signal to enter the charging mode; selling the USB module to determine whether the charging device is allowed to enter the voting right of sleep; entering sleep. It should be understood that after the charging device enters sleep, the CPU in the charging device stops running, so the USB module stops working, that is, the communication between the USB module and the power supply device in the mobile phone is stopped, and the USB module does not consume power.
  • FIG. 5 is a schematic diagram of an apparatus for charging through a USB interface according to an embodiment of the present invention.
  • the device includes: a USB module 501, a battery 502, a power supply module 503, a control module 504, and a USB interface 505.
  • the device to be charged is connected to the device through the USB interface 505;
  • the control module 504 is configured to close communication between the USB module 501 and a power supply device (such as P (:, portable computer, etc.); the USB module 501, the battery 502, the power supply module 503, and the USB interface 505 respectively function with the prior art.
  • a power supply device such as P (:, portable computer, etc.
  • the USB module 501 is used for direct communication with the power supply device
  • the battery 502 is used for charging through the USB interface
  • the power is stored
  • the power supply module is provided with power
  • the power supply module 503 is used for providing the power stored in the battery.
  • the control module 504 is specifically a first switch for disconnecting the data line of the USB module communication.
  • the data line communicating with the USB module is disconnected.
  • the first switch may have a triode or other devices that implement a switching function.
  • the control module 504 is specifically a second switch for stopping the power supply module 503 to supply power to the USB module 501.
  • the USB module is rendered inoperable, thereby turning off communication between the USB module 501 and the power supply device. Therefore, when charging through the USB interface, only the power cable of the USB interface in the device is connected to the battery, the battery is being charged, and the USB module does not consume power, thereby improving the charging efficiency of the device.
  • the control module 504 can be specifically a CPU for shutting down its working state, and can also be understood as sleeping itself.
  • the USB module 501 is connected to the CPU, and the universal serial bus module is controlled by the central processor.
  • the CPU When the CPU is turned off, the working state of the corresponding USB module is also turned off, and the USB module can also be understood as being in a sleep state, thereby turning off communication between the USB module 501 and the power supply device.
  • the device is connected to the PC, only the power cable of the USB interface in the device is connected to the battery, the battery is being charged, and the USB module is not in operation, and the USB module does not consume power, thereby improving the charging efficiency of the device.
  • the device illustrated in FIG. 5 may specifically be a mobile phone having a USB interface, an MP3, a palmtop computer, or the like.
  • FIG. 6 is a schematic diagram of a charging device with a USB interface according to an embodiment of the present invention.
  • the device may be a PC, a notebook computer or the like, and the device includes: a USB interface 601, a power module 602, a communication module 603, and a charging control module 604.
  • the USB interface has a data line and a power line, wherein the data line is connected to the communication module 603, and the power line is connected to the battery module 602, and is used for charging the device to be charged through the power line;
  • the charging control module 604 is configured to disconnect the data line on the universal serial bus interface connected to the communication module. Alternatively, the charge control module 604 can control the disconnection of the data lines on the universal serial bus interface connected to the communication module in accordance with user commands.
  • the present invention further provides a charging system having a USB interface, including the charging device as described in FIG. 5 and the charging device as described in FIG. 6, wherein the charging system can be charged by any one of FIG. 1 to FIG. method.
  • the storage medium is It is a disk, a compact disk, a read-only memory (ROM), or a random access memory (RAM).

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Power Sources (AREA)

Abstract

L'invention concerne un procédé et un dispositif de charge au travers d'une interface de Bus Série Universel (USB). Le procédé comprend les étapes suivantes : connecter un dispositif à charger à un dispositif d'alimentation électrique au travers de l'interface USB ; fermer le trajet de communication entre un module USB et le dispositif d'alimentation électrique ; et charger le dispositif à charger à l'aide du dispositif d'alimentation électrique au travers d'une ligne d'alimentation du dispositif USB. Conformément aux solutions techniques de la présente invention, la communication établie entre le module USB du dispositif à charger et le dispositif d'alimentation électrique est interrompue et le dispositif à charger est ensuite chargé par l'intermédiaire de l'interface USB. Conformément au procédé, l'opération de communication du module USB est interrompue, de sorte qu'il n'est plus nécessaire que le module USB reste dans un état de fonctionnement lorsqu'il est chargé au travers de l'interface USB, et que la CPU (Unité centrale) du dispositif à charger peut cesser de fonctionner de manière à ce que la totalité du courant soit utilisée pour la charge, cela améliorant l'efficacité de la charge.
PCT/CN2011/076001 2010-06-21 2011-06-21 Procédé et dispositif de charge au travers d'une interface de bus série universel WO2011160572A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201010208116.6 2010-06-21
CN201010208116A CN101853970A (zh) 2010-06-21 2010-06-21 一种通过通用串行总线接口充电的方法和装置

Publications (1)

Publication Number Publication Date
WO2011160572A1 true WO2011160572A1 (fr) 2011-12-29

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CN101853970A (zh) * 2010-06-21 2010-10-06 华为终端有限公司 一种通过通用串行总线接口充电的方法和装置
US8843770B2 (en) * 2011-10-31 2014-09-23 Smsc Holdings S.A.R.L. Device charging over USB using a plurality of handshakes
CN102662895A (zh) * 2012-03-26 2012-09-12 华为终端有限公司 外接输入/输出设备的通信方法、装置和系统
US9348382B2 (en) * 2013-02-22 2016-05-24 Maxim Integrated Products, Inc. Method and apparatus for providing power to an electronic device
CN104423278B (zh) 2013-08-27 2017-09-26 华为终端有限公司 移动供电终端及其供电方法
CN106160055A (zh) * 2015-04-20 2016-11-23 联想(北京)有限公司 充电设备和充电控制方法
CN106874232B (zh) * 2015-12-14 2021-07-30 中兴通讯股份有限公司 通用串行总线usb的充电方法、装置及终端
CN106300564A (zh) * 2016-10-31 2017-01-04 宇龙计算机通信科技(深圳)有限公司 一种充电方法及移动终端
CN106828161B (zh) * 2017-02-13 2019-03-26 清华大学 一种应用于多路充电插口电动汽车充电设备及其控制方法
EP3680783B1 (fr) * 2017-09-29 2023-03-08 Huawei Technologies Co., Ltd. Appareil électronique et procédé et dispositif de réduction de la consommation d'énergie
CN111338452B (zh) * 2020-02-05 2023-08-18 深圳盛科威电子有限公司 模拟u盘加速充电的方法、系统、存储介质及移动终端

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