WO2016179992A1 - 快速充电方法、电源适配器和移动终端 - Google Patents

快速充电方法、电源适配器和移动终端 Download PDF

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Publication number
WO2016179992A1
WO2016179992A1 PCT/CN2015/094625 CN2015094625W WO2016179992A1 WO 2016179992 A1 WO2016179992 A1 WO 2016179992A1 CN 2015094625 W CN2015094625 W CN 2015094625W WO 2016179992 A1 WO2016179992 A1 WO 2016179992A1
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WO
WIPO (PCT)
Prior art keywords
power adapter
mobile terminal
instruction
current
charging mode
Prior art date
Application number
PCT/CN2015/094625
Other languages
English (en)
French (fr)
Inventor
曾元清
Original Assignee
广东欧珀移动通信有限公司
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
Priority claimed from PCT/CN2015/078898 external-priority patent/WO2016074458A1/zh
Application filed by 广东欧珀移动通信有限公司 filed Critical 广东欧珀移动通信有限公司
Priority to EP15891688.2A priority Critical patent/EP3142341B1/en
Priority to CN201580004964.6A priority patent/CN106170901B/zh
Publication of WO2016179992A1 publication Critical patent/WO2016179992A1/zh
Priority to US15/379,194 priority patent/US10424953B2/en
Priority to US16/450,791 priority patent/US10673261B2/en

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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/007Regulation of charging or discharging current or voltage
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/42Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44Methods for charging or discharging
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0042Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction
    • H02J7/0044Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction specially adapted for holding portable devices containing batteries
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/02Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/02Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
    • H02J7/04Regulation of charging current or voltage
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M19/00Current supply arrangements for telephone systems
    • H04M19/08Current supply arrangements for telephone systems with current supply sources at the substations
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2207/00Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J2207/20Charging or discharging characterised by the power electronics converter
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/00032Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
    • H02J7/00034Charger exchanging data with an electronic device, i.e. telephone, whose internal battery is under charge
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0068Battery or charger load switching, e.g. concurrent charging and load supply
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Definitions

  • Embodiments of the present invention relate to the field of charging, and more particularly, to a fast charging method, a power adapter, and a mobile terminal.
  • mobile terminals such as smart phones
  • mobile terminals consume a large amount of power and usually need to be charged frequently.
  • the charging time becomes correspondingly longer. How to achieve fast charging needs to be solved.
  • the output current of the power adapter is directly increased without considering the bearing capacity of the mobile terminal, which may cause the mobile terminal to overheat or even burn out, thereby reducing the service life of the mobile terminal.
  • Embodiments of the present invention provide a fast charging method, a power adapter, and a mobile terminal to improve the security of the fast charging process.
  • a fast charging method is provided, the method being applied to a power adapter, the power adapter being connected to a mobile terminal via a USB interface, and a power line in the USB interface is used for the power adapter as the mobile terminal Charging, the data line in the USB interface is used for two-way communication between the power adapter and the mobile terminal, the power adapter supports a normal charging mode and a fast charging mode, wherein the charging current of the fast charging mode is greater than the a charging current of a normal charging mode, the method comprising: the power adapter performing two-way communication with the mobile terminal through a data line in the USB interface to determine to charge the mobile terminal using the fast charging mode; The power adapter adjusts a charging current to a charging current corresponding to the fast charging mode to charge the mobile terminal.
  • the power adapter performs two-way communication with the mobile terminal through a data line in the USB interface to determine to use the fast charging mode for the mobile
  • the charging of the terminal includes: the power adapter transmitting a first instruction to the mobile terminal, the first instruction is used to query whether the mobile terminal turns on the fast charging mode; and the power adapter receives the mobile terminal from the mobile terminal a reply instruction of the first instruction, the first An instruction reply command is used to instruct the mobile terminal to agree to turn on the fast charging mode.
  • the method before the power adapter sends the first instruction to the mobile terminal, the method further includes: The power adapter is charged with the mobile terminal by the normal charging mode; the power adapter sends a first instruction to the mobile terminal, including: the power adapter determines that the charging duration of the normal charging mode is greater than a preset threshold Thereafter, the first instruction is sent to the mobile terminal.
  • the power adapter adjusts a charging current to a charging current corresponding to the fast charging mode
  • the method includes: the power adapter performs bidirectional communication with the mobile terminal through a data line in the USB interface to determine a charging voltage corresponding to the fast charging mode; the power adapter will charge a voltage Adjusting to the charging voltage corresponding to the fast charging mode.
  • the power adapter performs two-way communication with the mobile terminal through a data line in the USB interface to determine The charging voltage corresponding to the fast charging mode includes: the power adapter transmitting a second instruction to the mobile terminal, the second instruction being used to query whether a current voltage of the power adapter is suitable as the fast charging mode a charging voltage; the power adapter receives a reply instruction of the second instruction sent by the mobile terminal, and the reply instruction of the second instruction is used to indicate that a current voltage of the power adapter is suitable, high or low; The power adapter determines the charging voltage of the fast charging mode according to the return instruction of the second instruction.
  • the power adapter adjusts a charging current to a charging current corresponding to the fast charging mode, Before the terminal is charged, the method includes: the power adapter performing bidirectional communication with the mobile terminal through a data line in the USB interface to determine a charging current corresponding to the fast charging mode.
  • the power adapter performs two-way communication with the mobile terminal through a data line in the USB interface to determine The charging current corresponding to the fast charging mode includes: the power adapter sends a third instruction to the mobile terminal, the third instruction is used to query a maximum charging current currently supported by the mobile terminal; and the power adapter receives The third finger sent by the mobile terminal Responding to the command, the reply instruction of the third instruction is used to indicate a maximum charging current currently supported by the mobile terminal; and the power adapter determines the charging current of the fast charging mode according to the reply instruction of the third instruction .
  • the method further includes: charging, by the power adapter, the mobile terminal by using the fast charging mode
  • the power adapter performs bidirectional communication with the mobile terminal through a data line in the USB interface to continuously adjust a charging current of the power adapter.
  • the power adapter performs two-way communication with the mobile terminal through a data line in the USB interface, Adjusting a charging current of the power adapter, comprising: the power adapter transmitting a fourth command to the mobile terminal, the fourth command for querying a current voltage of a battery in the mobile terminal; a reply instruction of the fourth instruction sent by the mobile terminal, the reply instruction of the fourth instruction is used to indicate a current voltage of a battery in the mobile terminal; and the power adapter adjusts according to a current voltage of the battery The charging current is described.
  • the power adapter adjusts the charging current according to a current voltage of the battery, including: the power adapter And adjusting a charging current of the power adapter to a charging current value corresponding to a current voltage of the battery according to a current voltage of the battery and a corresponding relationship between a preset battery voltage value and a charging current value.
  • the method further includes: charging, by the power adapter, the mobile terminal by using the fast charging mode During the process, the power adapter performs bidirectional communication with the mobile terminal through a data line in the USB interface to determine whether the USB interface is in poor contact; when it is determined that the USB interface is in poor contact, the power adapter exits The fast charging mode.
  • the power adapter performs two-way communication with the mobile terminal through a data line in the USB interface
  • the method further includes: the power adapter receiving information from the mobile terminal for indicating a path impedance of the mobile terminal; the power adapter passing through the USB interface
  • the data line performs two-way communication with the mobile terminal to determine whether the USB interface is in poor contact
  • the method includes: the power adapter sends a fourth instruction to the mobile terminal, where the fourth instruction is used to query the mobile terminal Battery
  • the power adapter receives a reply command of the fourth command sent by the mobile terminal, and the reply command of the fourth command is used to indicate a voltage of a battery in the mobile terminal; Determining a path voltage of the power adapter to the battery according to a charging voltage of the power adapter and a voltage of the battery; the power adapter is based on a path impedance of the power adapter
  • the method before the power adapter exits the fast charging mode, the method further includes: the power adapter The mobile terminal sends a fifth instruction, where the fifth instruction is used to indicate that the USB interface is in poor contact.
  • a fast charging method is provided, the method being applied to a mobile terminal, wherein the mobile terminal is connected to a power adapter through a USB interface, and a power line in the USB interface is used to charge the mobile terminal, A data line in the USB interface is used for two-way communication between the mobile terminal and the power adapter, the mobile terminal supports a normal charging mode and a fast charging mode, wherein a charging current of the fast charging mode is greater than that of the normal charging mode Charging current, the method comprising: the mobile terminal performing two-way communication with the power adapter through a data line in the USB interface, such that the power adapter determines to use the fast charging mode to charge the mobile terminal; The mobile terminal receives a charging current corresponding to the fast charging mode from the power adapter to charge a battery in the mobile terminal.
  • the mobile terminal performs two-way communication with the power adapter through a data line in the USB interface, so that the power adapter determines to use the fast charging mode Charging the mobile terminal, the mobile terminal receiving a first instruction sent by the power adapter, the first instruction being used to query whether the mobile terminal turns on the fast charging mode;
  • the power adapter sends a reply instruction of the first instruction, and the reply instruction of the first instruction is used to indicate that the mobile terminal agrees to enable the fast charging mode.
  • the method before the receiving, by the mobile terminal, the first instruction sent by the power adapter, the method further includes: Charging between the mobile terminal and the power adapter by the normal charging mode; the mobile terminal receiving the first instruction sent by the power adapter, comprising: the power adapter determining that the charging time of the normal charging mode is greater than a pre- After the threshold is set, the mobile terminal receives the The first instruction sent by the power adapter.
  • the mobile terminal receives the charging current corresponding to the fast charging mode from the power adapter, Before charging the battery in the mobile terminal, the method includes: the mobile terminal performing bidirectional communication with the power adapter through a data line in the USB interface, so that the power adapter determines a charging voltage corresponding to the fast charging mode .
  • the mobile terminal performs two-way communication with the power adapter through a data line in the USB interface, so as to Determining, by the power adapter, a charging voltage corresponding to the fast charging mode, comprising: the mobile terminal receiving a second instruction sent by the power adapter, wherein the second instruction is used to query whether a current voltage of the power adapter is suitable as a a charging voltage of the fast charging mode; the mobile terminal sends a reply instruction of the second instruction to the power adapter, where the reply instruction of the second instruction is used to indicate that the current voltage of the power adapter is suitable, high or Low.
  • the mobile terminal receives the charging current corresponding to the fast charging mode from the power adapter, Before charging the battery in the mobile terminal, the method includes: the mobile terminal performing bidirectional communication with the power adapter through a data line in the USB interface, so that the power adapter determines a charging current corresponding to the fast charging mode .
  • the mobile terminal performs two-way communication with the power adapter through a data line in the USB interface, so as to Determining, by the power adapter, a charging current corresponding to the fast charging mode, comprising: the mobile terminal receiving a third instruction sent by the power adapter, wherein the third instruction is used to query a maximum charging current currently supported by the mobile terminal; Sending, by the mobile terminal, a reply instruction of the third instruction to the power adapter, where the reply instruction of the third instruction is used to indicate a maximum charging current currently supported by the mobile terminal, so that the power adapter is according to the maximum The charging current determines a charging current corresponding to the fast charging mode.
  • the method further includes: charging, by the power adapter, the mobile terminal by using the fast charging mode During the process, the mobile terminal performs two-way communication with the power adapter through a data line in the USB interface, so that the power adapter continuously adjusts the charging current of the power adapter.
  • the mobile terminal performs two-way communication with the power adapter through a data line in the USB interface, so as to The power adapter continuously adjusts the charging current of the power adapter, including: the mobile terminal receives a fourth command sent by the power adapter, and the fourth command is used to query a current voltage of a battery in the mobile terminal; Transmitting, by the mobile terminal, a reply instruction of the fourth instruction to the power adapter, where the reply instruction of the fourth instruction is used to indicate a current voltage of a battery in the mobile terminal, so that the power adapter is according to the battery
  • the current voltage constantly adjusts the charging current of the power adapter.
  • the method further includes: charging, by the power adapter, the mobile terminal by using the fast charging mode During the process, the mobile terminal performs bidirectional communication with the power adapter through a data line in the USB interface, so that the power adapter determines whether the USB interface is in poor contact.
  • the mobile terminal performs two-way communication with the power adapter through a data line in the USB interface, so as to Determining whether the USB interface is in poor contact, the mobile terminal receiving a fourth command sent by the power adapter, the fourth command being used to query a current voltage of a battery in the mobile terminal; Transmitting, by the mobile terminal, a reply instruction of the fourth instruction to the power adapter, where the reply instruction of the fourth instruction is used to indicate a current voltage of a battery in the mobile terminal, so that the power adapter is according to the charging adapter The charging voltage and the current voltage of the battery determine whether the USB interface is in poor contact.
  • the method further includes: receiving, by the mobile terminal, a fifth instruction sent by the power adapter, where Five instructions are used to indicate that the USB interface is in poor contact.
  • a power adapter is provided, where the power adapter is connected to a mobile terminal through a USB interface, and a power line in the USB interface is used by the power adapter to charge the mobile terminal, and data in the USB interface a line for the two-way communication between the power adapter and the mobile terminal, the power adapter supporting a normal charging mode and a fast charging mode, wherein a charging current of the fast charging mode is greater than a charging current of the normal charging mode,
  • the power adapter includes: a communication unit configured to perform bidirectional communication with the mobile terminal through a data line in the USB interface to determine to charge the mobile terminal using the fast charging mode; current adjustment list And configured to adjust a charging current to a charging current corresponding to the fast charging mode to charge the mobile terminal.
  • the communication unit is specifically configured to send, to the mobile terminal, a first instruction, where the first instruction is used to query whether the mobile terminal enables the fast a charging mode; receiving, by the mobile terminal, a reply instruction of the first instruction, where the reply instruction of the first instruction is used to instruct the mobile terminal to agree to enable the fast charging mode.
  • the power adapter further includes: a power conversion unit, configured to pass the common between the mobile terminal and the mobile terminal Charging mode charging; the communication unit is specifically configured to: after determining that the charging duration of the normal charging mode is greater than a preset threshold, send the first instruction to the mobile terminal.
  • the communication unit is further configured to perform two-way communication with the mobile terminal by using a data line in the USB interface. And determining a charging voltage corresponding to the fast charging mode; the power adapter further includes: a voltage adjusting unit, configured to adjust a charging voltage to a charging voltage corresponding to the fast charging mode.
  • the communication unit is further configured to send a second instruction to the mobile terminal, where the second instruction is used by Querying whether a current voltage of the power adapter is suitable as a charging voltage of the fast charging mode; receiving a reply instruction of the second instruction sent by the mobile terminal, where the reply instruction of the second instruction is used to indicate the power source
  • the current voltage of the adapter is suitable, high or low; the power adjustment unit is specifically configured to determine the charging voltage of the fast charging mode according to the return instruction of the second instruction.
  • the communication unit is specifically configured to perform two-way communication with the mobile terminal by using a data line in the USB interface. And determining a charging current corresponding to the fast charging mode.
  • the communication unit is specifically configured to send, to the mobile terminal, a third instruction, where the third instruction is used to Querying a maximum charging current currently supported by the mobile terminal; receiving a reply instruction of the third instruction sent by the mobile terminal, where the reply instruction of the third instruction is used to indicate a maximum charging current currently supported by the mobile terminal; And determining, according to the reply instruction of the third instruction, the charging current of the fast charging mode.
  • the communication unit is further configured to: use the fast charging mode to charge the mobile terminal in the power adapter During the process, two-way communication with the mobile terminal is performed through a data line in the USB interface to continuously adjust a charging current of the power adapter.
  • the communication unit is specifically configured to send a fourth instruction to the mobile terminal, where the fourth instruction is used by Querying a current voltage of the battery in the mobile terminal; receiving a reply instruction of the fourth instruction sent by the mobile terminal, where the reply instruction of the fourth instruction is used to indicate a current voltage of a battery in the mobile terminal;
  • the current adjustment unit is specifically configured to adjust the charging current according to a current voltage of the battery.
  • the current adjustment unit is specifically configured to: according to a current voltage of the battery, and a preset battery voltage value Corresponding relationship between the charging current values, adjusting the charging current of the power adapter to a charging current value corresponding to the current voltage of the battery.
  • the communication unit is further configured to: use the fast charging mode to charge the mobile terminal in the power adapter And performing a two-way communication with the mobile terminal through the data line in the USB interface to determine whether the USB interface is in poor contact; and when determining that the USB interface is in poor contact, exiting the fast charging mode.
  • the communication unit is specifically configured to receive, from the mobile terminal, a path impedance for indicating the mobile terminal Receiving a reply instruction of the fourth instruction sent by the mobile terminal, the reply instruction of the fourth instruction is used to indicate a voltage of a battery in the mobile terminal; according to a charging voltage of the power adapter and the a voltage of the battery, determining a path impedance of the power adapter to the battery; a path impedance of the power adapter to the battery, a path impedance of the mobile terminal, and between the power adapter and the mobile terminal The path impedance of the charging line line determines whether the USB interface is in poor contact.
  • the communication unit is further configured to send, to the mobile terminal, a fifth instruction, where the fifth instruction is used Indicates that the USB interface is in poor contact.
  • a mobile terminal is provided, and the mobile terminal and the power adapter pass through a USB An interface is connected, and a power line in the USB interface is used to charge the mobile terminal, and a data line in the USB interface is used for two-way communication between the mobile terminal and the power adapter, and the mobile terminal supports normal charging.
  • the mobile terminal comprising: a communication unit, configured to pass the data line in the USB interface with the power adapter Performing two-way communication, so that the power adapter determines to use the fast charging mode to charge the mobile terminal; and a charging unit, configured to receive, from the power adapter, a charging current corresponding to the fast charging mode, in the mobile terminal Battery charging.
  • the communication unit is specifically configured to receive a first instruction sent by the power adapter, where the first instruction is used to query whether the mobile terminal turns on the a fast charging mode; sending a reply instruction of the first instruction to the power adapter, the reply instruction of the first instruction is used to instruct the mobile terminal to agree to turn on the fast charging mode.
  • the charging unit is further configured to perform charging by using the normal charging mode with the power adapter;
  • the communication unit is configured to receive the first instruction sent by the power adapter after the power adapter determines that the charging duration of the normal charging mode is greater than a preset threshold.
  • the communication unit is further configured to perform two-way communication with the power adapter through a data line in the USB interface So that the power adapter determines a charging voltage corresponding to the fast charging mode.
  • the communication unit is specifically configured to receive a second instruction sent by the power adapter, where the second instruction is used by Querying whether a current voltage of the power adapter is suitable as a charging voltage of the fast charging mode; transmitting a reply instruction of the second instruction to the power adapter, where the reply instruction of the second instruction is used to indicate the power source
  • the current voltage of the adapter is appropriate, high or low.
  • the communication unit is further configured to perform two-way communication with the power adapter through a data line in the USB interface So that the power adapter determines a charging current corresponding to the fast charging mode.
  • the communication unit is specifically configured to receive a third instruction sent by the power adapter, the third instruction is used to query a maximum charging current currently supported by the mobile terminal, and send the third to the power adapter. And the reply instruction of the third instruction is used to indicate a maximum charging current currently supported by the mobile terminal, so that the power adapter determines a charging current corresponding to the fast charging mode according to the maximum charging current.
  • the communication unit is further configured to: use the fast charging mode to charge the mobile terminal in the power adapter The two-way communication with the power adapter through the data line in the USB interface, so that the power adapter continuously adjusts the charging current of the power adapter.
  • the communication unit is specifically configured to receive a fourth instruction sent by the power adapter, where the fourth instruction is used Querying a current voltage of the battery in the mobile terminal; transmitting a reply instruction of the fourth instruction to the power adapter, where the reply instruction of the fourth instruction is used to indicate a current voltage of a battery in the mobile terminal, So that the power adapter continuously adjusts the charging current of the power adapter according to the current voltage of the battery.
  • the communication unit is further configured to: use the fast charging mode to charge the mobile terminal in the power adapter During the process, two-way communication is performed with the power adapter through a data line in the USB interface, so that the power adapter determines whether the USB interface is in poor contact.
  • the communication unit is specifically configured to receive a fourth instruction sent by the power adapter, where the fourth instruction is used Querying a current voltage of the battery in the mobile terminal; transmitting a reply instruction of the fourth instruction to the power adapter, where the reply instruction of the fourth instruction is used to indicate a current voltage of a battery in the mobile terminal,
  • the power adapter determines whether the USB interface is in poor contact according to a charging voltage of the charging adapter and a current voltage of the battery.
  • the communication unit is further configured to receive a fifth instruction sent by the power adapter, The fifth instruction is used to indicate that the USB interface is in poor contact.
  • a fast charging method is provided, the method being applied to a power adapter, wherein the power adapter is connected to a mobile terminal through a universal serial bus USB interface, and a power cable in the USB interface is used for the power adapter Charging the mobile terminal, the number in the USB interface a line for the two-way communication between the power adapter and the mobile terminal, the power adapter supporting a normal charging mode and a fast charging mode, wherein a charging current of the fast charging mode is greater than a charging current of the normal charging mode,
  • the method includes: the power adapter determines to enable the fast charging mode; the power adapter performs handshake communication with the mobile terminal by using a second instruction to determine a charging voltage corresponding to the fast charging mode; the power adapter passes The third instruction performs handshake communication with the mobile terminal to determine a charging current corresponding to the fast charging mode; the power adapter adjusts an output voltage and an output current to a charging voltage and a charging current corresponding to the fast charging mode, and enters a constant current
  • the power adapter determines to enable the fast charging mode, and the power adapter performs handshake communication with the mobile terminal by using a first instruction to determine to enable The fast charging mode.
  • the power adapter performs handshake communication with the mobile terminal by using a first instruction to determine to enable the fast charging
  • the mode includes: the power adapter transmitting the first instruction to the mobile terminal, the first instruction is used to query whether the mobile terminal turns on the fast charging mode; and the power adapter receives from the mobile terminal The reply instruction of the first instruction; when the reply instruction of the first instruction instructs the mobile terminal to agree to enable the fast charging mode, the power adapter determines to enable the fast charging mode.
  • the reply instruction of the first instruction includes impedance information for indicating a path impedance of the mobile terminal, Impedance information is used by the power adapter to determine if the USB interface is in poor contact during the constant current phase.
  • the method further includes: when connecting with the mobile terminal, when the power adapter detects When the charging current provided by the power adapter for the mobile terminal is greater than or equal to a preset current threshold for a preset duration, the power adapter confirms that the mobile terminal has completed identification of the type of the power adapter; Transmitting the first instruction to the mobile terminal by the power adapter, comprising: after the power adapter confirms that the mobile terminal has identified the type of the power adapter, the power adapter sends the First instruction.
  • the method further includes: when the reply instruction of the first instruction indicates that the mobile terminal does not agree to open the location In the fast charging mode, the power adapter repeatedly performs the above-described charging current detection process and the first command handshake communication process until the mobile terminal agrees to turn on the fast charging mode or the charging current is less than the current threshold.
  • the power adapter determines to enable the fast charging mode, that: the power adapter receives from the mobile terminal Querying a message for inquiring whether the power adapter supports the fast charging mode; the power adapter transmitting a response message to the mobile terminal, the response message being used to indicate that the power adapter supports the fast a charging mode; the power adapter receives an indication message from the mobile terminal, the indication message being used to instruct the power adapter to turn on the fast charging mode.
  • the power adapter performs handshake communication with the mobile terminal by using a second instruction to determine the fast charging mode.
  • Corresponding charging voltage comprising: the power adapter transmitting the second instruction to the mobile terminal, the second instruction being used to query whether a current output voltage of the power adapter is suitable as a charging voltage of the fast charging mode
  • the power adapter receives a reply instruction of the second instruction sent by the mobile terminal, and the reply instruction of the second instruction is used to indicate that the current output voltage of the power adapter is suitable, high or low;
  • the reply command of the second instruction indicates that the current output voltage of the power adapter is appropriate, the power adapter determines a current output voltage of the power adapter as a charging voltage corresponding to the fast charging mode; when the second instruction
  • the power adapter is configured to indicate that the current output voltage of the power adapter is high or low.
  • Adjusting the current output voltage of the power adapter according to the reply instruction of the second instruction repeatedly performing the handshake communication process based on the second instruction, continuously adjusting the current output voltage of the power adapter until the second instruction
  • the reply command indicates that the current output voltage of the power adapter is appropriate.
  • the method further includes: determining, by the power adapter, a length of time of the handshake communication process based on the second instruction When the length of time is greater than a preset time length threshold, the power adapter confirms that the process of the handshake communication of the second instruction is abnormal, exits the handshake communication process of the fast charging mode, or re-determines whether to start fast charging. mode.
  • the power adapter performs handshake communication with the mobile terminal by using a third instruction to determine the fast charging mode.
  • Corresponding charging current comprising: the power adapter transmitting the third instruction to the mobile terminal, the third instruction is used to query a maximum charging current currently supported by the mobile terminal; the power adapter receiving the mobile a reply instruction of the third instruction sent by the terminal, the reply instruction of the third instruction is used to indicate a maximum charging current currently supported by the mobile terminal; and the power adapter determines the location according to the reply instruction of the third instruction The charging current of the fast charging mode.
  • the power adapter adjusts an output current to a charging current corresponding to the fast charging mode, including: the power source The adapter adjusts the output current to the charging current corresponding to the fast charging mode by controlling the current adjustment speed, wherein the current adjustment speed is within a preset current speed adjustment range.
  • the power adapter performs a handshake with the mobile terminal by using a fourth instruction.
  • Communicating to adjust an output current of the power adapter including: in the constant current phase, the power adapter transmitting a fourth command to the mobile terminal, the fourth command being used to query a battery in the mobile terminal a current voltage; the power adapter receives a reply command of the fourth command sent by the mobile terminal, and the reply command of the fourth command is used to indicate a current voltage of a battery in the mobile terminal; the power adapter The output current of the power adapter is adjusted according to the current voltage of the battery.
  • the power adapter provides a fourth command to the mobile terminal in the constant current phase.
  • the fourth command is used to query the current voltage of the battery in the mobile terminal, including: in the constant current phase, the power adapter sends the first time to the mobile terminal every predetermined time interval Four instructions.
  • the power adapter in another implementation manner of the fifth aspect, in the constant current phase, is in each adjustment process of the output current of the power adapter The output current is adjusted by less than or equal to 5% of the current output current of the power adapter.
  • the method further comprises: the power adapter receiving, from the mobile terminal, impedance information indicating a path impedance of the mobile terminal; in the constant current phase, the power adapter is according to the power adapter Determining a charging loop impedance of the power adapter to the battery, a current output voltage and a current voltage of the battery; the power adapter according to the charging loop impedance, a path impedance of the mobile terminal, and the power adapter and a path impedance of the charging line line between the mobile terminals, determining whether the USB interface is in poor contact; when the USB interface is in poor contact, the power adapter exits the fast charging mode or re-determines whether the fast is enabled Charging mode.
  • the method further includes: when the USB interface is in poor contact, the power adapter is to the mobile terminal Sending a fifth instruction, the fifth instruction is used to indicate that the USB interface is in poor contact, and the power adapter is ready to exit the fast charging mode or re-determine whether to enable the fast charging mode.
  • a communication time interval between the power adapter and the mobile terminal is less than a preset Time interval threshold, otherwise exit the fast charging mode or re-determine whether to enable the fast charging mode.
  • the stopping of the fast charging mode includes two stopping modes: a recoverable stop mode and an unrecoverable stop mode.
  • the power adapter or the mobile terminal In the recoverable stop mode, the power adapter or the mobile terminal re-opens the fast charging mode, and performs handshake communication with the mobile terminal; in the unrecoverable stop mode, the The power adapter or the mobile terminal no longer turns on the fast charging mode, uses the normal charging mode to charge the mobile terminal, or no longer charges the mobile terminal.
  • the recoverable stop mode is applicable to: the between the power adapter and the mobile terminal If a communication abnormality occurs or an abnormality occurs in a battery of the mobile terminal, the fast charging mode is stopped, the power adapter re-inquires whether the mobile terminal agrees to turn on the fast charging mode, and the mobile terminal agrees to re-enable the fast charging Or the case where the unrecoverable stop mode is applicable: the battery of the mobile terminal is full or the USB interface is poorly contacted, and the power adapter re-query whether the mobile terminal turns on the fast charging mode The mobile terminal does not agree to turn on the fast charging mode.
  • the method further includes: the power adapter determining a USB interface connecting the power adapter and the mobile terminal Whether the data line is a data line supporting the fast charging mode.
  • the power adapter is provided as a host during the communication between the power adapter and the mobile terminal And a clock signal synchronized by the power adapter and the mobile terminal.
  • the power adapter provides the clock signal through a D+ data line in the USB interface, the power adapter Communicating and/or transmitting data with the mobile terminal through a D-data line in the USB interface.
  • the communication and/or charging process between the power adapter and the mobile terminal is based on an open loop current Segment constant current VOOC flash charging technology or VOOC flash charging communication protocol.
  • a fast charging method is provided, the method being applied to a mobile terminal, wherein the mobile terminal is connected to a power adapter through a universal serial bus USB interface, and a power line in the USB interface is used for the mobile terminal Charging, the data line in the USB interface is used for two-way communication between the mobile terminal and the power adapter, the mobile terminal supports a normal charging mode and a fast charging mode, wherein the charging current of the fast charging mode is greater than the The charging current of the normal charging mode, the method includes: the mobile terminal determines to enable the fast charging mode; the mobile terminal performs a handshake communication with the power adapter through a second instruction sent by the power adapter to determine Determining a charging voltage corresponding to the fast charging mode; the mobile terminal performs a handshake communication with the power adapter through a third command sent by the power adapter to determine a charging current corresponding to the fast charging mode; The output voltage and the output current are adjusted to the charge corresponding to the fast charge mode After the voltage and charging current enter
  • the mobile terminal determines that the fast charging mode is enabled, that the mobile terminal performs the first instruction sent by the power adapter with the mobile terminal. Handshake communication to determine to turn on the fast charge mode.
  • the mobile terminal performs handshake communication with the mobile terminal by using a first instruction sent by the power adapter, Determining that the fast charging mode is turned on, comprising: the mobile terminal receiving the first instruction from the power adapter, the first instruction being used to query whether the mobile terminal turns on the fast charging mode; the mobile terminal And sending a reply instruction of the first instruction to the power adapter, where the reply instruction of the first instruction is used to indicate that the mobile terminal agrees to enable the fast charging mode.
  • the reply instruction of the first instruction includes impedance information for indicating a path impedance of the mobile terminal, Impedance information is used by the power adapter to determine if the USB interface is in poor contact during the constant current phase.
  • the method further includes: in a process of connecting with the power adapter, the mobile terminal passes the The D+ data line and the D-data line in the USB interface detect the type of the power adapter; the mobile terminal receives a charging current from the power adapter, the charging current is greater than a preset current threshold; Receiving the first instruction, the power adapter includes: after the power adapter detects that the charging current provided by the power adapter for the mobile terminal is greater than or equal to the current threshold for a preset duration, the moving The terminal receives the first instruction from the power adapter.
  • the mobile terminal determines that the fast charging mode is enabled, that: the mobile terminal sends the power adapter to the power adapter Querying a message for inquiring whether the power adapter supports the fast charging mode; the mobile terminal receiving a response message from the power adapter, the response message being used to indicate that the power adapter supports the fast a charging mode; the mobile terminal sends an indication message to the power adapter, the indication message being used to instruct the power adapter to turn on the fast charging mode.
  • the second instruction sent by the mobile terminal by the power adapter and the power adapter Performing handshake communication to determine a charging voltage corresponding to the fast charging mode, comprising: the mobile terminal receiving the second instruction from the power adapter, the second instruction for querying a current output voltage of the power adapter Whether it is suitable as a charging voltage of the fast charging mode; the mobile terminal sends a reply instruction of the second instruction to the power adapter, and the reply instruction of the second instruction is used to indicate a current output voltage of the power adapter Suitably, too high or low, so that the power adapter determines the charging voltage corresponding to the fast charging mode according to the return instruction of the second instruction.
  • the mobile terminal sends a reply instruction of the second instruction to the power adapter, including: when When the mobile terminal determines that the current output voltage of the power adapter is higher than the battery voltage of the mobile terminal, and the voltage difference between the current output voltage of the power adapter and the battery voltage is within a preset pressure difference threshold range, The mobile terminal sends a reply instruction of the second instruction to the power adapter, and the reply instruction of the second instruction is used to indicate that the current output voltage of the power adapter is appropriate.
  • the differential pressure threshold is in the range of 200 mV to 500 mV.
  • the method further includes: determining, by the mobile terminal, a length of a handshake communication process based on the second instruction When the length of time is greater than a preset time length threshold, the mobile terminal confirms that the process of the handshake communication of the second instruction is abnormal, exits the handshake communication process of the fast charging mode, or re-determines whether to start fast charging. mode.
  • the mobile terminal performs a handshake communication with the power adapter by using a third instruction sent by the power adapter, Determining a charging current corresponding to the fast charging mode, comprising: the mobile terminal receiving the third instruction from the power adapter, the third instruction being used to query a maximum charging current currently supported by the mobile terminal; The mobile terminal sends a reply instruction of the third instruction to the power adapter, where the reply instruction of the third instruction is used to indicate a maximum charging current currently supported by the mobile terminal, so that the power adapter responds according to the third instruction. And instructing to determine a charging current corresponding to the fast charging mode.
  • the fourth instruction sent by the mobile terminal by the power adapter and the power adapter Performing handshake communication to adjust the output current by the power adapter, including: in the constant current phase, the mobile terminal receives a fourth command from the power adapter, the fourth command being used to query the mobile terminal a current voltage of the battery; the mobile terminal sends a reply command of the fourth instruction to the power adapter, and the reply command of the fourth command is used to indicate a current voltage of a battery in the mobile terminal, so that the power source
  • the adapter adjusts an output current of the power adapter according to a current voltage of the battery.
  • the mobile terminal in another implementation manner of the tenth aspect, in the constant current phase, receives a fourth instruction from the power adapter, where The fourth command is used to query the current voltage of the battery in the mobile terminal, including: in the constant current phase, the mobile terminal receives the first time from the power adapter every predetermined time interval Four instructions.
  • the power adapter in another implementation manner of the tenth aspect, in the constant current phase, is in each adjustment process of the output current of the power adapter The output current is adjusted by less than or equal to 5% of the current output current of the power adapter.
  • the method further includes: the mobile terminal sending, to the power adapter, the mobile terminal Information of the path impedance, so that the power adapter determines whether the USB interface is in poor contact according to the path impedance during the constant current phase; when the power adapter determines that the USB interface is in poor contact, the mobile terminal The power adapter receives a fifth command for indicating that the USB interface is in poor contact, and the power adapter is ready to exit the fast charging mode or re-determine whether to enable the fast charging mode.
  • a communication time interval between the power adapter and the mobile terminal is less than a preset Time interval threshold, otherwise exit the fast charging mode or re-enable the fast charging mode.
  • the stopping of the fast charging mode includes two stopping modes: a recoverable stop mode and an unrecoverable stop mode.
  • the power adapter or the mobile terminal In the recoverable stop mode, the power adapter or the mobile terminal re-opens the fast charging mode, and performs handshake communication with the mobile terminal; in the unrecoverable stop mode, the The power adapter or the mobile terminal is no longer turned on In the fast charging mode, the mobile terminal is charged using the normal charging mode, or the mobile terminal is no longer charged.
  • the case that the recoverable stop mode is applicable includes: between the power adapter and the mobile terminal If a communication abnormality occurs or an abnormality occurs in a battery of the mobile terminal, the fast charging mode is stopped, the power adapter re-inquires whether the mobile terminal agrees to turn on the fast charging mode, and the mobile terminal agrees to re-enable the fast charging Or the case where the non-recoverable stop mode is applicable: the battery of the mobile terminal is full or the USB interface is poorly contacted, and the power adapter re-query whether the mobile terminal turns on the fast charging mode. The mobile terminal does not agree to turn on the fast charging mode.
  • the method further includes: the mobile terminal determining a USB interface connecting the power adapter and the mobile terminal Whether the data line is a data line supporting the fast charging mode.
  • the power adapter is provided as a host during the communication between the power adapter and the mobile terminal And a clock signal synchronized by the power adapter and the mobile terminal.
  • the power adapter provides the clock signal through a D+ data line in the USB interface, the power adapter Communicating and/or transmitting data with the mobile terminal through a D-data line in the USB interface.
  • the communication and/or charging process between the power adapter and the mobile terminal is based on an open loop current Segment constant current VOOC flash charging technology or VOOC flash charging communication protocol.
  • a power adapter is provided, wherein the power adapter is connected to a mobile terminal through a universal serial bus USB interface, and a power line in the USB interface is used by the power adapter to charge the mobile terminal, the USB A data line in the interface is used for two-way communication between the power adapter and the mobile terminal, the power adapter supports a normal charging mode and a fast charging mode, wherein the charging current of the fast charging mode is greater than the charging of the normal charging mode Current,
  • the power adapter includes: a communication control circuit and a charging circuit, wherein the communication control circuit is configured to determine to enable the fast charging mode; perform handshake communication with the mobile terminal by using a second instruction to determine the fast charging mode Charging voltage; performing handshake communication with the mobile terminal by using a third instruction to determine a charging current corresponding to the fast charging mode; adjusting an output voltage and an output current to a charging voltage and a charging current corresponding to the fast charging mode, and entering a constant current phase; in the constant current phase, performing handshake communication with
  • the communications control circuit is configured to perform handshake communication with the mobile terminal by using a first instruction to determine to enable the fast charging mode.
  • the communication control circuit is specifically configured to send, by the power adapter, the first instruction to the mobile terminal, The first instruction is used to query whether the mobile terminal turns on the fast charging mode; receive a reply instruction of the first instruction from the mobile terminal; and when the reply instruction of the first instruction indicates that the mobile terminal agrees When the fast charging mode is turned on, it is determined to turn on the fast charging mode.
  • the reply instruction of the first instruction includes impedance information for indicating a path impedance of the mobile terminal, Impedance information is used by the power adapter to determine if the USB interface is in poor contact during the constant current phase.
  • the communication control circuit is further configured to: when the mobile terminal is connected to the mobile terminal When it is detected that the charging current provided by the power adapter for the mobile terminal is greater than or equal to a preset current threshold for a preset duration, confirm that the mobile terminal has completed identification of the type of the power adapter; After the power adapter confirms that the mobile terminal has identified the type of the power adapter, the power adapter transmits the first instruction to the mobile terminal.
  • the communication control circuit is further configured to: when the reply instruction of the first instruction indicates that the mobile terminal disagrees When the fast charging mode is turned on, the power adapter repeatedly performs the above charging current The detecting process and the first instruction handshake communication process until the mobile terminal agrees to turn on the fast charging mode or the charging current is less than the current threshold.
  • the communications control circuit is specifically configured to receive an inquiry message from the mobile terminal, where the query message is used to query Whether the power adapter supports the fast charging mode; sending a response message to the mobile terminal, the response message is used to indicate that the power adapter supports the fast charging mode; and receiving an indication message from the mobile terminal, The indication message is used to instruct the power adapter to turn on the fast charging mode.
  • the communication control circuit is specifically configured to send the second instruction to the mobile terminal, the second The instruction is configured to query whether a current output voltage of the power adapter is suitable as a charging voltage of the fast charging mode; receive a reply instruction of the second instruction sent by the mobile terminal, and the reply instruction of the second instruction is used to: Determining that the current output voltage of the power adapter is suitable, high or low; when the return command of the second instruction indicates that the current output voltage of the power adapter is appropriate, determining the current output voltage of the power adapter as Determining a charging voltage corresponding to the fast charging mode; when the returning instruction of the second instruction indicates that the current output voltage of the power adapter is high or low, adjusting the power adapter according to the reply instruction of the second instruction
  • the current output voltage repeatedly performing the above-mentioned handshake communication process based on the second instruction, continuously adjusting the current state of the power adapter Voltage, until the return instruction
  • the communication control circuit is further configured to determine a length of time of the handshake communication process based on the second instruction; When the length of time is greater than the preset time length threshold, the process of confirming the handshake communication of the second instruction is abnormal, exiting the handshake communication process of the fast charging mode, or re-determining whether to start the fast charging mode.
  • the communication control circuit is specifically configured to send the third instruction to the mobile terminal, the third The instruction is used to query a maximum charging current currently supported by the mobile terminal; and receive a reply instruction of the third instruction sent by the mobile terminal, where the reply instruction of the third instruction is used to indicate that the mobile terminal currently supports the maximum a charging current; determining a charging current of the fast charging mode according to the return instruction of the third instruction.
  • the communication control circuit is specifically configured to adjust an output current to the fast charging mode by controlling a current adjustment speed Corresponding charging current, wherein the current adjustment speed is within a preset current speed adjustment range.
  • the communication control circuit is specifically configured to: in the constant current phase, the power adapter to the mobile terminal Sending a fourth instruction, the fourth instruction is used to query a current voltage of a battery in the mobile terminal; receiving a reply instruction of the fourth instruction sent by the mobile terminal, and the reply instruction of the fourth instruction is used to: Indicating a current voltage of a battery in the mobile terminal; adjusting an output current of the power adapter according to a current voltage of the battery.
  • the communication control circuit is specifically configured to perform the preset time interval in the constant current phase. Sending the fourth instruction to the mobile terminal once.
  • the power adapter in another implementation manner of the seventh aspect, in the constant current phase, is in each adjustment process of the output current of the power adapter The output current is adjusted by less than or equal to 5% of the current output current of the power adapter.
  • the communication control circuit is further configured to receive, from the mobile terminal, a path impedance for indicating the mobile terminal Impedance information; determining, during the constant current phase, a charging loop impedance of the power adapter to the battery according to a current output voltage of the power adapter and a current voltage of the battery; Determining whether the USB interface is in poor contact due to the path impedance of the mobile terminal and the path impedance of the charging line line between the power adapter and the mobile terminal; and exiting the fast charging when the USB interface is in poor contact Mode or re-determine whether to enable the fast charge mode.
  • the communication control circuit is further configured to: when the USB interface is in poor contact, send the first to the mobile terminal And a fifth instruction, the fifth instruction is used to indicate that the USB interface is in poor contact, and the power adapter is ready to exit the fast charging mode or re-determine whether to enable the fast charging mode.
  • the communication time interval between the power adapter and the mobile terminal is small during the constant current phase At a preset time interval threshold, otherwise exit the fast charging mode or re-determine whether to enable the fast charging mode.
  • the stopping of the fast charging mode includes two stopping modes: a recoverable stop mode and an unrecoverable stop mode.
  • the power adapter or the mobile terminal In the recoverable stop mode, the power adapter or the mobile terminal re-opens the fast charging mode, and performs handshake communication with the mobile terminal; in the unrecoverable stop mode, the The power adapter or the mobile terminal no longer turns on the fast charging mode, uses the normal charging mode to charge the mobile terminal, or no longer charges the mobile terminal.
  • the recoverable stop mode is applicable to: the power adapter and the mobile terminal If a communication abnormality occurs or an abnormality occurs in a battery of the mobile terminal, the fast charging mode is stopped, the power adapter re-inquires whether the mobile terminal agrees to turn on the fast charging mode, and the mobile terminal agrees to re-enable the fast charging Or the case where the non-recoverable stop mode is applicable: the battery of the mobile terminal is full or the USB interface is poorly contacted, and the power adapter re-query whether the mobile terminal turns on the fast charging mode. The mobile terminal does not agree to turn on the fast charging mode.
  • the communication control circuit is further configured to determine data of a USB interface connecting the power adapter and the mobile terminal Whether the line is a data line supporting the fast charging mode.
  • the power adapter is provided as a host during the communication between the power adapter and the mobile terminal And a clock signal synchronized by the power adapter and the mobile terminal.
  • the power adapter provides the clock signal through a D+ data line in the USB interface, the power adapter Communicating and/or transmitting data with the mobile terminal through a D-data line in the USB interface.
  • the communication and/or charging process between the power adapter and the mobile terminal is based on an open loop current segmented constant current VOOC flash charging technique or a VOOC flash charging communication protocol.
  • a mobile terminal is provided, where the mobile terminal is connected to a power adapter through a universal serial bus USB interface, and a power line in the USB interface is used to charge the mobile terminal, and data in the USB interface a line for the mobile terminal and the power adapter to perform two-way communication, the mobile terminal supporting a normal charging mode and a fast charging mode, wherein a charging current of the fast charging mode is greater than a charging current of the normal charging mode,
  • the mobile terminal includes: a communication control circuit and a charging circuit, the communication control circuit is configured to determine to enable the fast charging mode; and perform a handshake communication with the power adapter by using a second instruction sent by the power adapter to determine the fast a charging voltage corresponding to the charging mode; a third command sent by the power adapter performs handshake communication with the power adapter to determine a charging current corresponding to the fast charging mode; and the output adapter adjusts an output voltage and an output current Charging voltage and charging current corresponding to the fast charging mode After entering the constant current phase, the
  • the communication control circuit is configured to perform handshake communication with the mobile terminal by using a first instruction sent by the power adapter to determine to enable the fast charging mode.
  • the communication control circuit is specifically configured to receive the first instruction from the power adapter, the first The instruction is configured to query whether the mobile terminal enables the fast charging mode; and send a reply instruction of the first instruction to the power adapter, where the reply instruction of the first instruction is used to instruct the mobile terminal to agree to enable the Fast charging mode.
  • the reply instruction of the first instruction includes impedance information for indicating a path impedance of the mobile terminal, Impedance information is used by the power adapter to determine if the USB interface is in poor contact during the constant current phase.
  • the communication control circuit is further configured to pass the USB interface during the connection with the power adapter
  • the D+ data line and the D-data line detect the type of the power adapter; receive a charging current from the power adapter, the charging current is greater than a preset current threshold; the communication control The circuit is specifically configured to receive the first from the power adapter after the power adapter detects that the charging current provided by the power adapter for the mobile terminal is greater than or equal to the current threshold for a preset duration instruction.
  • the communications control circuit is specifically configured to send an inquiry message to the power adapter, where the query message is used to query Whether the power adapter supports the fast charging mode; receiving a response message from the power adapter, the response message is used to indicate that the power adapter supports the fast charging mode; and sending an indication message to the power adapter, The indication message is used to instruct the power adapter to turn on the fast charging mode.
  • the communication control circuit is specifically configured to receive the second instruction from the power adapter, the second The instruction is configured to query whether a current output voltage of the power adapter is suitable as a charging voltage of the fast charging mode; send a reply instruction of the second instruction to the power adapter, and the reply instruction of the second instruction is used to indicate The current output voltage of the power adapter is suitable, high or low, so that the power adapter determines the charging voltage corresponding to the fast charging mode according to the return instruction of the second instruction.
  • the communication control circuit is specifically configured to: when the mobile terminal determines that a current output voltage of the power adapter is higher than Sending a response command of the second instruction to the power adapter when the battery voltage of the mobile terminal and the voltage difference between the current output voltage of the power adapter and the battery voltage are within a preset pressure difference threshold range
  • the reply instruction of the second instruction is used to indicate that the current output voltage of the power adapter is appropriate.
  • the differential pressure threshold is in the range of 200 mV to 500 mV.
  • the communication control circuit is further configured to determine a length of time of the handshake communication process based on the second instruction; When the length of time is greater than the preset time length threshold, the process of confirming the handshake communication of the second instruction is abnormal, exiting the handshake communication process of the fast charging mode, or re-determining whether to start the fast charging mode.
  • the communication control circuit is specifically configured to receive the third instruction from the power adapter, where The third instruction is used to query the maximum charging current currently supported by the mobile terminal; and send a reply instruction of the third instruction to the power adapter, where the reply instruction of the third instruction is used to indicate that the mobile terminal currently supports the maximum Charging current, so that the power adapter determines a charging current corresponding to the fast charging mode according to the return instruction of the third instruction.
  • the communication control circuit is specifically configured to: in the constant current phase, the mobile terminal from the power adapter Receiving a fourth instruction, the fourth instruction is used to query a current voltage of a battery in the mobile terminal; a reply instruction of the fourth instruction is sent to the power adapter, and a reply instruction of the fourth instruction is used to indicate a current voltage of the battery in the mobile terminal, such that the power adapter adjusts an output current of the power adapter according to a current voltage of the battery.
  • the communication control circuit is configured to perform the preset time interval from the constant current phase
  • the power adapter receives the fourth command once.
  • the power adapter in another implementation manner of the eighth aspect, in the constant current phase, is in each adjustment process of the output current of the power adapter The output current is adjusted by less than or equal to 5% of the current output current of the power adapter.
  • the communication control circuit is further configured to send, to the power adapter, a path impedance for indicating the mobile terminal Information that the power adapter determines whether the USB interface is in poor contact according to the path impedance during the constant current phase; and when the power adapter determines that the USB interface is in poor contact, receives a fifth from the power adapter And the fifth instruction is used to indicate that the USB interface is in poor contact, and the power adapter is ready to exit the fast charging mode or re-determine whether to enable the fast charging mode.
  • a communication time interval between the power adapter and the mobile terminal is less than a preset Time interval threshold, otherwise exit the fast charging mode or re-enable the fast charging mode.
  • the stopping of the fast charging mode includes two stopping modes: a recoverable stop mode and an unrecoverable stop mode.
  • the recoverable stop mode the power adapter or the shift The mobile terminal re-opens the fast charging mode, and performs handshake communication with the mobile terminal again; in the unrecoverable stop mode, the power adapter or the mobile terminal no longer turns on the fast charging mode, and uses the The normal charging mode charges the mobile terminal or no longer charges the mobile terminal.
  • the recoverable stop mode is applicable to: the power adapter and the mobile terminal If a communication abnormality occurs or an abnormality occurs in a battery of the mobile terminal, the fast charging mode is stopped, the power adapter re-inquires whether the mobile terminal agrees to turn on the fast charging mode, and the mobile terminal agrees to re-enable the fast charging Or the case where the non-recoverable stop mode is applicable: the battery of the mobile terminal is full or the USB interface is poorly contacted, and the power adapter re-query whether the mobile terminal turns on the fast charging mode. The mobile terminal does not agree to turn on the fast charging mode.
  • the communication control circuit is further configured to determine data of a USB interface connecting the power adapter and the mobile terminal Whether the line is a data line supporting the fast charging mode.
  • the power adapter is provided as a host during the communication between the power adapter and the mobile terminal And a clock signal synchronized by the power adapter and the mobile terminal.
  • the power adapter provides the clock signal through a D+ data line in the USB interface, the power adapter Communicating and/or transmitting data with the mobile terminal through a D-data line in the USB interface.
  • the communication and/or charging process between the power adapter and the mobile terminal is based on an open loop current Segment constant current VOOC flash charging technology or VOOC flash charging communication protocol.
  • a fast charging method is provided, the method being applied to a power adapter, wherein the power adapter is connected to a mobile terminal through a universal serial bus USB interface, and a power cable in the USB interface is used for the power adapter Charging the mobile terminal, the number in the USB interface a line for the two-way communication between the power adapter and the mobile terminal, the power adapter supporting a normal charging mode and a fast charging mode, wherein a charging current of the fast charging mode is greater than a charging current of the normal charging mode,
  • the method includes: the power adapter determines to turn on the fast charging mode; the power adapter sends a second instruction to the mobile terminal, the second instruction is used to query whether a current output voltage of the power adapter is suitable as a a charging voltage of the fast charging mode; the power adapter receives a reply instruction of the second instruction sent by the mobile terminal, and the reply instruction of the second instruction is used to indicate that the current output voltage of the power adapter is appropriate and biased High or low; the power adapter
  • the power adapter determines to enable the fast charging mode, that: the power adapter sends the first instruction to the mobile terminal, the first The instruction is configured to query whether the mobile terminal enables the fast charging mode; the power adapter receives a reply instruction of the first instruction from the mobile terminal, and the reply instruction of the first instruction is used to indicate the mobile terminal Activating the fast charging mode; the power adapter determines to turn on the fast charging mode according to the reply instruction of the first instruction.
  • the reply instruction of the first instruction includes a plurality of bits, where the multiple bits include Whether the mobile terminal agrees to turn on the bit of the fast charging mode, and a bit for indicating the path impedance of the mobile terminal, the path impedance of the mobile terminal is used by the power adapter to determine whether the contact of the USB interface is good.
  • the first instruction is 10101000, or 0xA8.
  • the reply instruction of the second instruction includes a plurality of bits, and the reply instruction of the second instruction is more The bits include bits for indicating that the current output voltage of the power adapter is appropriate, high or low.
  • the second instruction is 10100100, or 0xA4.
  • the reply instruction of the third instruction includes a plurality of bits, and the reply instruction of the third instruction is more The bits include bits for indicating the maximum charging current currently supported by the mobile terminal.
  • the third instruction is 10100110 or 0xA6.
  • the reply instruction of the fourth instruction includes a plurality of bits, and the reply instruction of the fourth instruction is more The bits include bits for indicating the current voltage of the battery, and bits for whether the battery is charging.
  • the fourth instruction is 10100010 or 0xA2.
  • the method further includes: the power adapter determining a poor contact of the USB interface; The mobile terminal sends a fifth instruction, where the fifth instruction is used to notify the mobile terminal of the poor contact of the USB interface, exit the fast charging mode, or re-determine whether to enable the fast charging mode.
  • the fifth instruction is 10110010 or 0xB2.
  • the method further includes: when the power adapter determines that a reply command received from the mobile terminal is encoded In the event of an error, the power adapter performs at least one of the following: exiting the fast charge mode, stopping charging, or re-determining whether the fast charge mode is turned on.
  • the instruction that the power adapter sends to the mobile terminal includes multiple bits, and the power adapter is sent In an instruction, the most significant bit MSB of the plurality of bits of the any instruction is sent first; or the instruction received by the power adapter from the mobile terminal includes a plurality of bits, and the power adapter receives an instruction The MSB of the plurality of bits of the certain instruction is received first.
  • the clock signal or the clock interrupt signal during the communication between the power adapter and the mobile terminal is Adapter provided.
  • the instruction that the power adapter sends to the mobile terminal includes a plurality of bits, among the multiple bits During each bit transmission, the power adapter first transmits the each bit and then sends a clock interrupt signal; or the power adapter receives a reply command from the mobile terminal including a plurality of bits, In the process of receiving each of a plurality of bits, the power supply is suitable The adapter first sends a clock interrupt signal, then delays the preset time interval and then receives each of the bits.
  • each of the instructions sent by the power adapter to the mobile terminal includes 8 bits of data
  • the power source The adapter transmits the 8-bit data to the mobile terminal through consecutive 8 clock cycles of the clock signal, and the first 10us of each of the consecutive 8 clock cycles is low, after 500us is high level
  • each reply command received by the power adapter from the mobile terminal includes 10 bits of data, and the power adapter passes from the mobile terminal through 10 consecutive clock cycles of the clock signal Receiving the 10 bits of data, the first 500us of each of the consecutive 10 clock cycles is a high level, and the last 10us is a low level.
  • the high level of the clock signal in the process of the power adapter receiving an instruction from the mobile terminal The minimum value is VDD-0.7V of the power adapter; or, in the process of receiving the command from the mobile terminal by the power adapter, the maximum value of the low level of the clock signal is 0.8V; or, During a process in which the power adapter sends an instruction to the mobile terminal, a minimum value of a high level of the clock signal is 0.25 VDD + 0.8 V; or, in a process in which the power adapter sends an instruction to the mobile terminal The maximum value of the high level of the clock signal is 4.5V; or, in the process of the power adapter transmitting an instruction to the mobile terminal, the maximum value of the low level of the clock signal is 0.15 VDD; , VDD is the operating voltage of the power adapter, and / or 3.2V ⁇ VDD ⁇ 4.5V.
  • the power adapter after the mobile terminal receives the clock interrupt signal, the power adapter sends the power adapter to the mobile terminal
  • the data retention time in the instruction is 500 ⁇ 5us.
  • a fast charging method is provided, the method being applied to a mobile terminal, wherein the mobile terminal is connected to a power adapter through a universal serial bus USB interface, and a power line in the USB interface is used for the mobile terminal Charging, the data line in the USB interface is used for two-way communication between the mobile terminal and the power adapter, the mobile terminal supports a normal charging mode and a fast charging mode, wherein the charging current of the fast charging mode is greater than the a charging current of a normal charging mode, the method comprising: the mobile terminal determining to turn on the fast charging mode; the mobile terminal receiving a second instruction from the power adapter, the second instruction for interrogating the power adapter Whether the current output voltage is suitable as the charging voltage of the fast charging mode; the movement Sending, by the terminal, the reply instruction of the second instruction to the power adapter, where the reply instruction of the second instruction is used to indicate that the current output voltage of the power adapter is suitable, high or low, so that the power adapter is configured according to the
  • the mobile terminal determines that the fast charging mode is enabled, that the mobile terminal receives the first instruction from the power adapter, where the first The command is used to query whether the mobile terminal enables the fast charging mode; the mobile terminal sends a reply instruction of the first instruction to the power adapter, and the reply instruction of the first instruction is used to indicate the mobile terminal Agree to turn on the fast charging mode.
  • the reply instruction of the first instruction includes a plurality of bits, where the multiple bits include Whether the mobile terminal agrees to turn on the bit of the fast charging mode, and a bit for indicating the path impedance of the mobile terminal, the path impedance of the mobile terminal is used by the power adapter to determine whether the contact of the USB interface is good.
  • the first instruction is 10101000, or 0xA8.
  • the reply instruction of the second instruction includes a plurality of bits, and the reply instruction of the second instruction is more The bits include bits for indicating that the current output voltage of the power adapter is appropriate, high or low.
  • the second instruction is 10100100 or 0xA4.
  • the reply instruction of the third instruction includes a plurality of bits, and the reply instruction of the third instruction is more The bits include bits for indicating the maximum charging current currently supported by the mobile terminal.
  • the third instruction is 10100110 or 0xA6.
  • the reply instruction of the fourth instruction includes a plurality of bits, and the reply instruction of the fourth instruction is more The bits include bits for indicating the current voltage of the battery, and bits for whether the battery is charging.
  • the fourth instruction is 10100010 or 0xA2.
  • the method further includes: the mobile terminal receiving a fifth instruction from the power adapter, the fifth The instruction is used to notify the mobile terminal of the poor contact of the USB interface, exit the fast charging mode or restart the fast charging mode.
  • the fifth instruction is 10110010 or 0xB2.
  • the method further includes: when the power adapter determines that a reply command received from the mobile terminal is encoded In case of an error, the mobile terminal performs at least one of the following operations: exiting the fast charging mode, stopping charging, or re-determining whether the fast charging mode is turned on.
  • the instruction sent by the mobile terminal to the power adapter includes a plurality of bits, and the mobile terminal is transmitting In an instruction, the most significant bit MSB of the plurality of bits of the any instruction is sent first; or the instruction received by the mobile terminal from the power adapter includes a plurality of bits, and the mobile terminal is receiving an instruction The MSB of the plurality of bits of the certain instruction is received first.
  • the clock signal in the communication process between the power adapter and the mobile terminal is provided by the power adapter.
  • the instruction that the power adapter sends to the mobile terminal includes a plurality of bits, among the multiple bits During each bit transmission, the power adapter first transmits the each bit and then sends a clock interrupt signal; or the power adapter receives a reply command from the mobile terminal including a plurality of bits, During the reception of each of the plurality of bits, the power adapter first transmits a clock interrupt signal, and then delays the preset time interval to receive each of the bits.
  • each of the instructions sent by the power adapter to the mobile terminal includes 8 bits of data
  • the power source The adapter transmits the 8-bit data to the mobile terminal through consecutive 8 clock cycles of the clock signal, and the first 10us of each of the consecutive 8 clock cycles is low, after 500us is high level; or, each reply command received by the power adapter from the mobile terminal includes 10 bits of data, and the power adapter passes from the mobile terminal through 10 consecutive clock cycles of the clock signal Receiving the 10 bits of data, the The first 500us of each of the 10 consecutive clock cycles is high, and the last 10us is low.
  • the high level of the clock signal in the process of the power adapter receiving an instruction from the mobile terminal The minimum value is VDD-0.7V of the power adapter; or, in the process of receiving the command from the mobile terminal by the power adapter, the maximum value of the low level of the clock signal is 0.8V; or, During a process in which the power adapter sends an instruction to the mobile terminal, a minimum value of a high level of the clock signal is 0.25 VDD + 0.8 V; or, in a process in which the power adapter sends an instruction to the mobile terminal
  • the maximum value of the high level of the clock signal is 4.5V; or, in the process of the power adapter transmitting an instruction to the mobile terminal, the maximum value of the low level of the clock signal is 0.15 VDD; , VDD is the operating voltage of the power adapter, and / or 3.2V ⁇ VDD ⁇ 4.5V.
  • the power adapter after the mobile terminal receives the clock interrupt signal, the power adapter sends the power adapter to the mobile terminal
  • the data retention time in the instruction is 500 ⁇ 5us.
  • the power adapter does not blindly increase the output current for fast charging, but needs to perform two-way communication with the mobile terminal, and negotiate whether the fast charging mode can be adopted, which improves the fast charging process compared with the prior art. safety.
  • FIG. 1 is a schematic flow chart of a fast charging method according to an embodiment of the present invention.
  • FIG. 2 is a schematic flow chart of a fast charging method according to an embodiment of the present invention.
  • FIG. 3 is a diagram showing an example of a fast charge on process in accordance with an embodiment of the present invention.
  • FIG. 4 is a diagram showing an example of a fast charging process in accordance with an embodiment of the present invention.
  • Fig. 5 is a schematic structural view of a power adapter according to an embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of a mobile terminal according to an embodiment of the present invention.
  • FIG. 7 is a schematic flowchart of a fast charging method according to an embodiment of the present invention.
  • FIG. 8 is a schematic flowchart of a fast charging method according to an embodiment of the present invention.
  • Fig. 9 is a schematic structural view of a power adapter according to an embodiment of the present invention.
  • FIG. 10 is a schematic structural diagram of a mobile terminal according to an embodiment of the present invention.
  • FIG. 1 is a schematic flow chart of a fast charging method according to an embodiment of the present invention.
  • the method of Figure 1 is applied to a power adapter.
  • the power adapter and the mobile terminal are connected through a Universal Serial Bus (USB) interface, and the USB interface may be a normal USB interface or a micro USB interface.
  • the power line in the USB interface is used by the power adapter to charge the mobile terminal, wherein the power line in the USB interface may be a VBus line and/or a ground line in the USB interface.
  • the data line in the USB interface is used for two-way communication between the power adapter and the mobile terminal, and the data line may be a D+ line and/or a D- line in a USB interface, and the so-called two-way communication may refer to a power adapter and a terminal.
  • the two sides exchange information.
  • the power adapter supports a normal charging mode and a fast charging mode, wherein the charging current of the fast charging mode is greater than the charging current of the normal charging mode (or the charging speed of the fast charging mode is greater than the charging speed of the normal charging mode) .
  • the normal charging mode can be understood as a charging mode with a rated output voltage of 5V and a rated output current of 2.5A or less.
  • the power adapter output ports D+ and D- can be short-circuited, and the present invention is implemented.
  • the fast charging mode in the example is different.
  • the power adapter can utilize D+ and D- to communicate and exchange data with the mobile terminal.
  • the embodiment of the present invention does not specifically limit the normal charging mode. As long as the power adapter supports two charging modes, the charging speed (or current) of one charging mode is greater than the charging speed of the other charging mode, the charging speed is slow.
  • the charging mode can be understood as a normal charging mode.
  • the method of Figure 1 includes:
  • the power adapter performs two-way communication with the mobile terminal through a data line in the USB interface to determine to use the fast charging mode to charge the mobile terminal.
  • the power adapter negotiates with the mobile terminal whether to adopt the fast charging mode.
  • the power adapter can be connected to the mobile terminal only, and is not charged.
  • the mobile terminal can be charged by using a normal charging mode, and the mobile terminal can be charged with a small current. Specifically limited.
  • the power adapter adjusts a charging current to a charging current corresponding to the fast charging mode to charge the mobile terminal.
  • the charging current can be directly adjusted to the charging current corresponding to the fast charging mode, or the charging current of the fast charging mode can be negotiated with the mobile terminal, for example, according to the battery in the mobile terminal.
  • the current power is used to determine the charging current corresponding to the fast charging mode.
  • the power adapter does not blindly increase the output current for fast charging, but needs to perform two-way communication with the mobile terminal, and negotiate whether the fast charging mode can be adopted, which improves the fast charging process compared with the prior art. safety.
  • step 110 may include: the power adapter sends a first instruction to the mobile terminal, the first instruction is used to query whether the mobile terminal turns on the fast charging mode; The power adapter receives a reply instruction of the first instruction from the mobile terminal, and the reply instruction of the first instruction is used to indicate that the mobile terminal agrees to enable the fast charging mode.
  • the method before the power adapter sends the first instruction to the mobile terminal, the method further includes: charging, by the normal charging mode, between the power adapter and the mobile terminal; The sending, by the power adapter, the first instruction to the mobile terminal, after the power adapter determines that the charging duration of the normal charging mode is greater than a preset threshold, sending the first instruction to the mobile terminal.
  • the power adapter may consider that the terminal has identified itself as a power adapter, and may open the fast charging inquiry communication.
  • the power adapter sends a first instruction to the mobile terminal, where the power adapter determines to use a charging current greater than or equal to a preset current threshold to charge a preset duration, The mobile terminal sends the first instruction.
  • the method of FIG. 1 may further include: the power adapter performing two-way communication with the mobile terminal through a data line in the USB interface to determine the fast charging Mode corresponding to the charging voltage; the power adapter adjusts the charging voltage To the charging voltage corresponding to the fast charging mode.
  • step 110 may include: the power adapter sends a second instruction to the mobile terminal, the second instruction is used to query whether a current voltage of the power adapter is suitable as the fast charging a charging voltage of the mode; the power adapter receives a reply instruction of the second instruction sent by the mobile terminal, and the reply instruction of the second instruction is used to indicate that the current voltage of the power adapter is suitable, high or low The power adapter determines a charging voltage of the fast charging mode according to the return instruction of the second instruction.
  • the method of FIG. 1 may further include: the power adapter performing two-way communication with the mobile terminal through a data line in the USB interface to determine the fast charging The charging current corresponding to the mode.
  • the foregoing power adapter performs bidirectional communication with the mobile terminal through a data line in the USB interface to determine a charging current corresponding to the fast charging mode, and may include: the power adapter The mobile terminal sends a third instruction, where the third instruction is used to query a maximum charging current currently supported by the mobile terminal; the power adapter receives a reply instruction of the third instruction sent by the mobile terminal, The reply instruction of the third instruction is used to indicate a maximum charging current currently supported by the mobile terminal; and the power adapter determines a charging current of the fast charging mode according to the reply instruction of the third instruction.
  • the power adapter can directly determine the above maximum charging current as the charging current of the fast charging mode, or set the charging current to a certain current value smaller than the maximum charging current.
  • the method of FIG. 1 may further include: when the power adapter uses the fast charging mode to charge the mobile terminal, the power adapter passes data in the USB interface.
  • the line communicates with the mobile terminal in two-way to continuously adjust the charging current of the power adapter.
  • the power adapter can continuously query the current working state of the mobile terminal, thereby continuously adjusting the charging current, such as asking the battery voltage of the mobile terminal, the battery power, and the like.
  • the power adapter performs bidirectional communication with the mobile terminal through a data line in the USB interface to continuously adjust a charging current of the power adapter
  • the power adapter may include: Sending, by the mobile terminal, a fourth instruction, the fourth instruction is used to query a current voltage of a battery in the mobile terminal, and the power adapter receives a reply instruction of the fourth instruction sent by the mobile terminal, The reply instruction of the fourth instruction is used to indicate a current voltage of the battery in the mobile terminal; the power adapter is based on the current power of the battery Press to adjust the charging current.
  • the power adapter adjusts the charging current according to a current voltage of the battery, including: the power adapter according to a current voltage of the battery, and a preset battery voltage value and charging Corresponding relationship between the current values adjusts the charging current of the power adapter to a charging current value corresponding to the current voltage of the battery.
  • the power adapter may pre-store the correspondence between the battery voltage value and the charging current value.
  • the method of FIG. 1 may further include: when the power adapter uses the fast charging mode to charge the mobile terminal, the power adapter passes data in the USB interface.
  • the line performs two-way communication with the mobile terminal to determine whether the USB interface is in poor contact; when it is determined that the USB interface is in poor contact, the power adapter exits the fast charging mode.
  • the method of FIG. 1 may further include before the power adapter performs bidirectional communication with the mobile terminal through a data line in the USB interface to determine whether the USB interface is in poor contact.
  • the power adapter receives information from the mobile terminal indicating a path impedance of the mobile terminal; the power adapter performs two-way communication with the mobile terminal through a data line in the USB interface to determine the Whether the USB interface is in poor contact, comprising: the power adapter transmitting a fourth instruction to the mobile terminal, the fourth instruction is used to query a voltage of a battery in the mobile terminal; and the power adapter receives the mobile terminal to send a reply instruction of the fourth instruction, the reply instruction of the fourth instruction is used to indicate a voltage of a battery in the mobile terminal; and the power adapter is configured according to a charging voltage of the power adapter and a voltage of the battery, Determining a path impedance of the power adapter to the battery; the power adapter according to the power adapter to the battery The path impedance, the
  • the mobile terminal can record the path impedance 1 of the mobile terminal in advance.
  • the mobile terminal of the same model has the same value when it is factory-set, and the path impedance of the mobile terminal is set to the same value.
  • the power adapter can pre-record the path impedance 2 of the charging line.
  • the path impedance of the entire path can be determined according to the voltage drop across the power adapter to the battery, when the path impedance 3 > path impedance 1 + path impedance 2, or path impedance 3- (path impedance 1 + path impedance 2) > impedance threshold, the USB interface is considered not to be in contact good.
  • the method of FIG. 1 may further include: the power adapter sending a fifth instruction to the mobile terminal, where the fifth instruction is used The indication that the USB interface is in poor contact.
  • the power adapter After the power adapter sends the fifth command, it can exit the fast charge mode or reset.
  • the fast charging method according to an embodiment of the present invention is described in detail above with reference to FIG. 1 from the perspective of a power adapter.
  • a fast charging method according to an embodiment of the present invention will be described below from the perspective of a mobile terminal in conjunction with FIG.
  • FIG. 2 is a schematic flow chart of a fast charging method according to an embodiment of the present invention.
  • the method of FIG. 2 is applied to a mobile terminal, and the mobile terminal is connected to a power adapter through a universal serial bus USB interface, and a power line in the USB interface is used to charge the mobile terminal, and the data line in the USB interface
  • the mobile terminal and the power adapter perform bidirectional communication, and the mobile terminal supports a normal charging mode and a fast charging mode, wherein a charging current of the fast charging mode is greater than a charging current of the normal charging mode
  • FIG. 2 Methods include:
  • the mobile terminal performs two-way communication with the power adapter through a data line in the USB interface, so that the power adapter determines to use the fast charging mode to charge the mobile terminal.
  • the mobile terminal receives a charging current corresponding to the fast charging mode from the power adapter, and charges a battery in the mobile terminal.
  • the power adapter does not blindly increase the output current for fast charging, but needs to perform two-way communication with the mobile terminal, and negotiate whether the fast charging mode can be adopted, which improves the fast charging process compared with the prior art. safety.
  • the mobile terminal performs two-way communication with the power adapter through a data line in the USB interface, so that the power adapter determines to use the fast charging mode to charge the mobile terminal.
  • the mobile terminal receives a first instruction sent by the power adapter, the first instruction is used to query whether the mobile terminal turns on the fast charging mode, and the mobile terminal sends the first to the power adapter
  • An acknowledgment command of the instruction, the replies command of the first instruction is used to indicate that the mobile terminal agrees to enable the fast charging mode.
  • the mobile terminal receives the sending by the power adapter.
  • the method further includes: charging, by the normal charging mode, between the mobile terminal and the power adapter; the mobile terminal receiving the first instruction sent by the power adapter, comprising: the power source After the adapter determines that the charging duration of the normal charging mode is greater than a preset threshold, the mobile terminal receives the first instruction sent by the power adapter.
  • the method before the mobile terminal receives the charging current corresponding to the fast charging mode from the power adapter to charge the battery in the mobile terminal, includes: the mobile terminal Two-way communication with the power adapter through a data line in the USB interface, so that the power adapter determines a charging voltage corresponding to the fast charging mode.
  • the mobile terminal performs bidirectional communication with the power adapter through a data line in the USB interface, so that the power adapter determines a charging voltage corresponding to the fast charging mode, including: Receiving, by the mobile terminal, a second instruction sent by the power adapter, the second instruction being used to query whether a current voltage of the power adapter is suitable as a charging voltage of the fast charging mode; the mobile terminal is to the power adapter Sending a reply instruction of the second instruction, where the reply instruction of the second instruction is used to indicate that the current voltage of the power adapter is suitable, high or low.
  • the method before the mobile terminal receives the charging current corresponding to the fast charging mode from the power adapter to charge the battery in the mobile terminal, includes: the mobile terminal Two-way communication with the power adapter through a data line in the USB interface, so that the power adapter determines a charging current corresponding to the fast charging mode.
  • the mobile terminal performs bidirectional communication with the power adapter through a data line in the USB interface, so that the power adapter determines a charging current corresponding to the fast charging mode, including: Receiving, by the mobile terminal, a third instruction sent by the power adapter, the third instruction is used to query a maximum charging current currently supported by the mobile terminal; and the mobile terminal sends a reply to the third instruction to the power adapter The instruction, the reply instruction of the third instruction is used to indicate a maximum charging current currently supported by the mobile terminal, so that the power adapter determines a charging current corresponding to the fast charging mode according to the maximum charging current.
  • the method further includes: when the power adapter uses the fast charging mode to charge the mobile terminal, the mobile terminal passes a data line in the USB interface
  • the power adapter performs bidirectional communication such that the power adapter continuously adjusts the charging current of the power adapter.
  • the mobile terminal passes data in the USB interface.
  • the line is in two-way communication with the power adapter, so that the power adapter continuously adjusts the charging current of the power adapter, including: the mobile terminal receives a fourth command sent by the power adapter, and the fourth command is used to query a current voltage of the battery in the mobile terminal; the mobile terminal sends a reply instruction of the fourth instruction to the power adapter, and the reply instruction of the fourth instruction is used to indicate a current state of the battery in the mobile terminal a voltage such that the power adapter continuously adjusts the charging current of the power adapter according to the current voltage of the battery.
  • the method further includes: when the power adapter uses the fast charging mode to charge the mobile terminal, the mobile terminal passes a data line in the USB interface
  • the power adapter performs two-way communication such that the power adapter determines whether the USB interface is in poor contact.
  • the mobile terminal performs bidirectional communication with the power adapter through a data line in the USB interface, so that the power adapter determines whether the USB interface is in poor contact, including: the mobile Receiving, by the terminal, a fourth instruction sent by the power adapter, the fourth instruction is used to query a current voltage of a battery in the mobile terminal; and the mobile terminal sends a reply instruction of the fourth instruction to the power adapter, The reply instruction of the fourth instruction is used to indicate a current voltage of a battery in the mobile terminal, so that the power adapter determines whether the USB interface is in contact according to a charging voltage of the charging adapter and a current voltage of the battery. bad.
  • the method further includes: receiving, by the mobile terminal, a fifth instruction sent by the power adapter, where the fifth instruction is used to indicate that the USB interface is in poor contact.
  • FIG. 3 is a diagram showing an example of a fast charge on process in accordance with an embodiment of the present invention.
  • the flash charging process consists of five phases:
  • the mobile terminal can detect the power adapter type through D+, D-, and when detecting that the power adapter is a non-USB type charging device, the current absorbed by the mobile terminal can be greater than a preset current threshold I2.
  • a preset duration for example, it can be continuous T1 time
  • the power adapter considers that the terminal has completed the identification of the power adapter type, the power adapter turns on the handshake communication between the power adapter and the mobile terminal, and the power adapter sends the command 1 (corresponding to the first instruction described above). Ask the terminal if the fast charge mode (or flash charge) is turned on.
  • the output current of the power adapter is detected again.
  • the request again is sent to inquire whether the mobile terminal is Turn on the fast charging mode and repeat the above steps of phase 1 until the mobile terminal replies to agree to turn on the fast charging mode, or the output current of the power adapter no longer satisfies the condition of greater than or equal to I2.
  • the flash charging process is turned on, and the flash charging communication process enters the second stage.
  • the power adapter output voltage may include a plurality of gear positions, and the power adapter sends an instruction 2 (corresponding to the second instruction) to the mobile terminal to inquire whether the output voltage of the power adapter of the mobile terminal matches (or is suitable, that is, whether it is suitable for fast charging) Charging voltage in mode).
  • the power adapter Responding to the power adapter that the output voltage of the power adapter is high or low or matching, and if the power adapter receives feedback from the mobile terminal that the output voltage of the power adapter is high or low, the power adapter will The output voltage of the power adapter is adjusted to one gear position, and the command 2 is sent to the mobile terminal again to re-inquire whether the output voltage of the power adapter of the mobile terminal matches.
  • step 2 Repeat step 2 above until the mobile terminal replies to the power adapter that the output voltage of the power adapter is in the matching gear position, and enters the third stage.
  • the power adapter After the power adapter receives the feedback that the mobile terminal responds to the output voltage matching of the power adapter, the power adapter sends an instruction 3 (corresponding to the third instruction) to the mobile terminal, inquiring about the maximum charging current currently supported by the mobile terminal, and the mobile terminal replies to the power adapter.
  • the maximum charging current value currently supported by the mobile terminal enters the fourth stage.
  • the power adapter receives feedback of the maximum charging current value currently supported by the mobile terminal replied by the mobile terminal, and the power adapter can set its output current to a specified value, and the power adapter outputs current to enter the constant current phase.
  • the power adapter When entering the constant current phase, the power adapter sends an instruction 4 (corresponding to the fourth instruction described above) at intervals, inquiring about the current voltage of the mobile terminal battery, and the mobile terminal can feed back the current voltage of the mobile terminal battery to the power adapter, and the power adapter can According to the feedback of the mobile terminal about the current voltage of the mobile terminal battery, it is judged whether the USB contact is good and whether it is necessary to lower the current charging current value of the mobile terminal. When the power adapter determines that the USB contact is bad, the command 5 (corresponding to the fifth command) is sent, and then reset to re-enter phase 1.
  • the command 5 (corresponding to the fifth command) is sent, and then reset to re-enter phase 1.
  • the data (or information) of the path impedance of the mobile terminal may be attached to the command 1 data, and the mobile terminal path impedance data may be used in Phase 5 determines if the USB contact is good.
  • the mobile terminal agrees to start the fast charging mode, and the time when the power adapter adjusts the voltage to the appropriate value may be controlled within a certain range, and the time moves beyond the predetermined range.
  • the terminal can determine that the request is abnormal and fast (or flash) reset.
  • the mobile terminal in phase 2, can make a response to the power adapter when the output voltage of the power adapter is adjusted to be higher than ⁇ V ( ⁇ V is about 200-500 mV) compared to the current voltage of the battery. The output voltage of the power adapter is properly fed back.
  • ⁇ V is about 200-500 mV
  • the speed adjustment speed of the power adapter output current value can be controlled within a certain range, so as to avoid abnormal interruption of the fast charge due to the excessive adjustment speed.
  • the magnitude of the magnitude of the output current value of the power adapter may be controlled within 5%.
  • the power adapter monitors the charging loop impedance in real time by monitoring the output voltage of the power adapter, the current charging current, and the read terminal battery voltage to monitor the entire charging loop impedance.
  • the charge loop impedance > terminal path impedance + flash charge data line impedance is measured, it can be considered that the USB contact is poor and the charge is reset.
  • the communication time interval between the power adapter and the mobile terminal can be controlled within a certain range to avoid flash reset.
  • the stop of the fast charge mode can be divided into two types: a recoverable stop and an unrecoverable stop:
  • the fast charge stops and resets, and enters phase 1
  • the mobile terminal does not agree to turn on the fast charging mode, and the fast charging communication process does not enter.
  • the fast charging process stopped at this time can be an unrecoverable stop.
  • the fast charge stops and resets to enter phase 1.
  • the mobile terminal agrees to turn on the fast charge mode to resume the fast charge charging process, and the fast charge is stopped at this time.
  • the process can be a recoverable stop.
  • the fast charge stops and resets to enter phase 1, and after entering phase 1, the mobile terminal does not agree to turn on the fast charge mode. Until the battery returns to normal and meets the requirements of Phase 1, the mobile terminal agrees to turn on the flash charging to resume the flash charging process, and the fast charging process that is stopped at this time may be a recoverable stop.
  • the power adapter is initially in the DCP mode, that is, the D+, D- short-circuit short-circuit mode, and the mobile terminal is charged in the normal charging mode.
  • the power adapter can also determine whether the data line is a fast charge data line. There are various specific determination methods. For example, an identification circuit is added to the data line, and the power adapter interacts with the identification circuit to perform information interaction. Whether the data line is a fast charge data line.
  • the power adapter can exit the fast charging process or reset.
  • Fig. 5 is a schematic structural view of a power adapter according to an embodiment of the present invention.
  • the power adapter 500 of FIG. 5 is capable of implementing the various steps performed by the power adapter of FIGS. 1 through 4, and to avoid repetition, it will not be described in detail herein.
  • the power adapter 500 is connected to the mobile terminal through a universal serial bus USB interface, and the power cable in the USB interface is used by the power adapter 500 to charge the mobile terminal, and the data in the USB interface.
  • the power adapter 500 includes:
  • the communication circuit 510 is configured to perform bidirectional communication with the mobile terminal by using a data line in the USB interface to determine to use the fast charging mode to charge the mobile terminal;
  • a current adjustment circuit 520 configured to adjust a charging current to a charging corresponding to the fast charging mode An electric current that charges the mobile terminal.
  • the power adapter does not blindly increase the output current for fast charging, but needs to perform two-way communication with the mobile terminal, and negotiate whether the fast charging mode can be adopted, which improves the fast charging process compared with the prior art. safety.
  • the communication circuit 510 is specifically configured to send, to the mobile terminal, a first instruction, where the first instruction is used to query whether the mobile terminal enables the fast charging mode;
  • the mobile terminal receives the reply instruction of the first instruction, where the reply instruction of the first instruction is used to instruct the mobile terminal to agree to enable the fast charging mode.
  • the power adapter 500 further includes: a power conversion circuit for charging with the mobile terminal by using the normal charging mode; the communication circuit 510 is specifically configured to determine the common After the charging duration of the charging mode is greater than a preset threshold, the first instruction is sent to the mobile terminal.
  • the communication circuit 510 is further configured to perform bidirectional communication with the mobile terminal by using a data line in the USB interface to determine a charging voltage corresponding to the fast charging mode;
  • the adapter 500 further includes: a voltage adjustment circuit for adjusting the charging voltage to a charging voltage corresponding to the fast charging mode.
  • the communication circuit 510 is further configured to send, to the mobile terminal, a second instruction, where the second instruction is used to query whether a current voltage of the power adapter 500 is suitable as the fast charging. a charging voltage of the mode; receiving a reply instruction of the second instruction sent by the mobile terminal, where the reply instruction of the second instruction is used to indicate that the current voltage of the power adapter 500 is suitable, high or low;
  • the power adjustment circuit is specifically configured to determine a charging voltage of the fast charging mode according to the return instruction of the second instruction.
  • the communication circuit 510 is specifically configured to perform bidirectional communication with the mobile terminal through a data line in the USB interface to determine a charging current corresponding to the fast charging mode.
  • the communications circuit 510 is specifically configured to send, to the mobile terminal, a third instruction, where the third command is used to query a maximum charging current currently supported by the mobile terminal; and receive the mobile a reply instruction of the third instruction sent by the terminal, the reply instruction of the third instruction is used to indicate a maximum charging current currently supported by the mobile terminal; and determining the fast charging mode according to the reply instruction of the third instruction The charging current.
  • the communication circuit 510 is further used in the power adapter During the charging of the mobile terminal by using the fast charging mode, the mobile terminal performs bidirectional communication with the mobile terminal through a data line in the USB interface to continuously adjust the charging current of the power adapter 500.
  • the communication circuit 510 is specifically configured to send, to the mobile terminal, a fourth instruction, where the fourth instruction is used to query a current voltage of a battery in the mobile terminal; and receive the mobile a reply instruction of the fourth instruction sent by the terminal, the reply instruction of the fourth instruction is used to indicate a current voltage of a battery in the mobile terminal; and the current adjustment circuit 520 is specifically configured to use a current voltage of the battery , adjusting the charging current.
  • the current adjustment circuit 520 is specifically configured to: charge current of the power adapter 500 according to a current voltage of the battery, and a corresponding relationship between a preset battery voltage value and a charging current value. Adjusting the charging current value corresponding to the current voltage of the battery.
  • the communication circuit 510 is further configured to pass the data line and the USB interface in the process of charging the mobile terminal by using the fast charging mode.
  • the mobile terminal performs two-way communication to determine whether the USB interface is in poor contact; when it is determined that the USB interface is in poor contact, the fast charging mode is exited.
  • the communications circuit 510 is specifically configured to receive, from the mobile terminal, information for indicating a path impedance of the mobile terminal, and receive a reply of the fourth command sent by the mobile terminal.
  • An instruction to indicate a voltage of a battery in the mobile terminal determining the power adapter 500 to the battery according to a charging voltage of the power adapter 500 and a voltage of the battery a path impedance; determining the USB according to a path impedance of the power adapter 500 to the battery, a path impedance of the mobile terminal, and a path impedance of a charging line line between the power adapter 500 and the mobile terminal
  • the interface is not in good contact.
  • the communications circuit 510 is further configured to send, to the mobile terminal, a fifth instruction, where the fifth command is used to indicate that the USB interface is in poor contact.
  • FIG. 6 is a schematic block diagram of a mobile terminal according to an embodiment of the present invention.
  • the mobile terminal 600 of FIG. 6 is connected to a power adapter through a universal serial bus USB interface, and a power line in the USB interface is used to charge the mobile terminal 600, and a data line in the USB interface is used for the mobile terminal
  • the mobile terminal 600 supports two-way communication, and the mobile terminal 600 supports a normal charging mode and a fast charging mode, wherein the charging current of the fast charging mode is greater than the charging current of the normal charging mode, and the mobile terminal 600 includes:
  • the communication circuit 610 is configured to perform bidirectional communication with the power adapter through a data line in the USB interface, so that the power adapter determines to use the fast charging mode to charge the mobile terminal 600;
  • the charging circuit 620 is configured to receive a charging current corresponding to the fast charging mode from the power adapter to charge a battery in the mobile terminal 600.
  • the power adapter does not blindly increase the output current for fast charging, but needs to perform two-way communication with the mobile terminal, and negotiate whether the fast charging mode can be adopted, which improves the fast charging process compared with the prior art. safety.
  • the communication circuit 610 is specifically configured to receive a first instruction sent by the power adapter, where the first instruction is used to query whether the mobile terminal 600 turns on the fast charging mode;
  • the power adapter sends a reply instruction of the first instruction, and the reply instruction of the first instruction is used to instruct the mobile terminal 600 to agree to enable the fast charging mode.
  • the charging circuit 620 is further configured to be charged by the normal charging mode with the power adapter; the communication circuit 610 is specifically configured to determine, by the power adapter, the normal charging mode. After the charging duration is greater than a preset threshold, the first instruction sent by the power adapter is received.
  • the communication circuit 610 is further configured to perform bidirectional communication with the power adapter through a data line in the USB interface, so that the power adapter determines a charging voltage corresponding to the fast charging mode. .
  • the communication circuit 610 is specifically configured to receive a second instruction sent by the power adapter, where the second instruction is used to query whether a current voltage of the power adapter is suitable as the fast charging. a charging voltage of the mode; sending a reply instruction of the second instruction to the power adapter, wherein the reply instruction of the second instruction is used to indicate that the current voltage of the power adapter is suitable, high or low.
  • the communication circuit 610 is further configured to perform bidirectional communication with the power adapter through a data line in the USB interface, so that the power adapter determines a charging current corresponding to the fast charging mode. .
  • the communications circuit 610 is specifically configured to receive a third command sent by the power adapter, where the third command is used to query a maximum charging current currently supported by the mobile terminal 600;
  • the power adapter sends a reply instruction of the third instruction, where the reply instruction of the third instruction is used to indicate a maximum charging current currently supported by the mobile terminal 600, so that The power adapter determines a charging current corresponding to the fast charging mode according to the maximum charging current.
  • the communication circuit 610 is further configured to pass the data line in the USB interface during the charging of the mobile terminal 600 by using the fast charging mode by the power adapter.
  • the power adapter performs two-way communication so that the power adapter continuously adjusts the charging current of the power adapter.
  • the communications circuit 610 is specifically configured to receive a fourth command sent by the power adapter, where the fourth command is used to query a current voltage of a battery in the mobile terminal 600;
  • the power adapter sends a reply command of the fourth instruction, where the reply command of the fourth command is used to indicate a current voltage of the battery in the mobile terminal 600, so that the power adapter continuously continues according to the current voltage of the battery. Adjust the charging current of the power adapter.
  • the communication circuit 610 is further configured to pass the data line in the USB interface during the charging of the mobile terminal 600 by using the fast charging mode by the power adapter.
  • the power adapter performs two-way communication so that the power adapter determines whether the USB interface is in poor contact.
  • the communications circuit 610 is specifically configured to receive a fourth command sent by the power adapter, where the fourth command is used to query a current voltage of a battery in the mobile terminal 600;
  • the power adapter sends a reply command of the fourth instruction, where the reply command of the fourth command is used to indicate a current voltage of a battery in the mobile terminal 600, so that the power adapter is based on a charging voltage of the charging adapter.
  • the current voltage of the battery determines whether the USB interface is in poor contact.
  • the communications circuit 610 is further configured to receive a fifth command sent by the power adapter, where the fifth command is used to indicate that the USB interface is in poor contact.
  • FIG. 7 is a schematic flowchart of a fast charging method according to an embodiment of the present invention.
  • the method of FIG. 7 is applicable to a power adapter that is connected to a mobile terminal via a universal serial bus USB interface, and a power cord in the USB interface is used by the power adapter to charge the mobile terminal, the USB A data line in the interface is used for two-way communication between the power adapter and the mobile terminal, the power adapter supports a normal charging mode and a fast charging mode, wherein the charging current of the fast charging mode is greater than the charging of the normal charging mode Current, the method of Figure 7 includes:
  • the power adapter determines to enable the fast charging mode.
  • the power adapter performs handshake communication with the mobile terminal by using a second instruction, to Determining a charging voltage corresponding to the fast charging mode;
  • the power adapter performs handshake communication with the mobile terminal by using a third instruction to determine a charging current corresponding to the fast charging mode.
  • the power adapter adjusts an output voltage and an output current to a charging voltage and a charging current corresponding to the fast charging mode, and enters a constant current phase.
  • the power adapter performs handshake communication with the mobile terminal by using a fourth instruction to adjust an output current of the power adapter to charge the mobile terminal in a segmented constant current manner.
  • the power adapter does not blindly increase the output current for fast charging, but needs to perform two-way communication with the mobile terminal, and negotiate whether the fast charging mode can be adopted, which improves the fast charging process compared with the prior art. safety.
  • the power adapter determines to enable the fast charging mode, and the power adapter performs handshake communication with the mobile terminal by using a first instruction to determine to enable the fast charging mode.
  • the power adapter performs handshake communication with the mobile terminal by using a first instruction to determine to enable the fast charging mode, where the power adapter sends the first to the mobile terminal.
  • An instruction the first instruction is used to query whether the mobile terminal turns on the fast charging mode; the power adapter receives a reply instruction of the first instruction from the mobile terminal; when the first instruction replies When the instruction instructs the mobile terminal to agree to turn on the fast charging mode, the power adapter determines to turn on the fast charging mode.
  • the reply instruction of the first instruction includes impedance information for indicating a path impedance of the mobile terminal, and the impedance information is used by the power adapter to determine the constant current phase
  • the USB interface is not in good contact.
  • the method of FIG. 7 may further include: in a process of connecting with the mobile terminal, when the power adapter detects that the power adapter provides the charging current for the mobile terminal in a pre- When the set duration is greater than or equal to a preset current threshold, the power adapter confirms that the mobile terminal has completed identification of the type of the power adapter; the power adapter sends the first instruction to the mobile terminal, The method includes: after the power adapter confirms that the mobile terminal has recognized the type of the power adapter, the power adapter sends the first instruction to the mobile terminal.
  • the method of FIG. 7 may further include: when the first instruction is back When the re-instruction indicates that the mobile terminal does not agree to enable the fast charging mode, the power adapter repeatedly performs the charging current detection process and the first instruction handshake communication process until the mobile terminal agrees to enable the fast charging mode Or the charging current is less than the current threshold.
  • the power adapter determines to enable the fast charging mode, and the power adapter receives an inquiry message from the mobile terminal, where the inquiry message is used to query whether the power adapter supports the a fast charging mode; the power adapter sends a response message to the mobile terminal, the response message is used to indicate that the power adapter supports the fast charging mode; and the power adapter receives an indication message from the mobile terminal The indication message is used to instruct the power adapter to turn on the fast charging mode.
  • the power adapter performs handshake communication with the mobile terminal by using a second instruction to determine a charging voltage corresponding to the fast charging mode, where the power adapter sends the power adapter to the mobile terminal.
  • the second instruction is configured to query whether a current output voltage of the power adapter is suitable as a charging voltage of the fast charging mode; the power adapter receives the second instruction sent by the mobile terminal Responding instruction, the reply instruction of the second instruction is used to indicate that the current output voltage of the power adapter is suitable, high or low; when the reply command of the second instruction indicates that the current output voltage of the power adapter is suitable
  • the power adapter determines a current output voltage of the power adapter as a charging voltage corresponding to the fast charging mode; and when a reply command of the second instruction indicates that a current output voltage of the power adapter is high or low
  • adjusting, by the power adapter, the power adapter according to the reply instruction of the second instruction The present output voltage, repeatedly performing the above process based on the second instruction handshaking, constantly adjusting
  • the method of FIG. 7 may further include: determining, by the power adapter, a length of time of the handshake communication process based on the second instruction; when the time length is greater than a preset time length threshold, The power adapter confirms that the process of the handshake communication of the second instruction is abnormal, exits the handshake communication process of the fast charge mode, or re-determines whether to start the fast charge mode.
  • re-determining whether to enable the fast charging mode in the embodiment of the present invention refers to restarting the handshake negotiation process of the fast charging process, such as restarting phase 1 in FIG.
  • the power adapter performs handshake communication with the mobile terminal by using a third instruction to determine a charging current corresponding to the fast charging mode, including: the The source adapter sends the third instruction to the mobile terminal, the third instruction is used to query a maximum charging current currently supported by the mobile terminal; and the power adapter receives the third instruction sent by the mobile terminal Returning an instruction, the reply instruction of the third instruction is used to indicate a maximum charging current currently supported by the mobile terminal; and the power adapter determines a charging current of the fast charging mode according to the reply instruction of the third instruction.
  • the power adapter adjusts an output current to a charging current corresponding to the fast charging mode, including: the power adapter adjusts an output current to the fast charging mode by controlling a current adjustment speed. Corresponding charging current, wherein the current adjustment speed is within a preset current speed adjustment range.
  • the power adapter performs handshake communication with the mobile terminal by using a fourth instruction to adjust an output current of the power adapter, including: a constant current phase, the power adapter transmitting a fourth command to the mobile terminal, the fourth command for querying a current voltage of a battery in the mobile terminal; the power adapter receiving the a reply instruction of the fourth instruction, the reply instruction of the fourth instruction is used to indicate a current voltage of the battery in the mobile terminal; and the power adapter adjusts an output current of the power adapter according to a current voltage of the battery.
  • the power adapter in the constant current phase, sends a fourth instruction to the mobile terminal, where the fourth instruction is used to query a current voltage of a battery in the mobile terminal.
  • the method includes: in the constant current phase, the power adapter sends the fourth instruction to the mobile terminal once every preset time interval.
  • the adjustment current of the output current of the power adapter is less than or equal to the current output current of the power adapter during each adjustment of the output current of the power adapter. 5%.
  • the method of FIG. 7 further includes: the power adapter receiving, from the mobile terminal, impedance information indicating a path impedance of the mobile terminal; in the constant current phase, the power source The adapter determines a charging loop impedance of the power adapter to the battery according to a current output voltage of the power adapter and a current voltage of the battery; the power adapter is based on the charging loop impedance, a path impedance of the mobile terminal And determining, by the path impedance of the charging line line between the power adapter and the mobile terminal, whether the USB interface is in poor contact; when the USB interface is in poor contact, the power adapter exits the fast charging mode or It is re-determined whether the fast charging mode is turned on.
  • the method of FIG. 7 further includes: when the USB interface is in poor contact, the power adapter sends a fifth instruction to the mobile terminal, where the fifth instruction is used to indicate the USB The interface is in poor contact, and the power adapter is ready to exit the fast charging mode or re-determine whether to enable the fast charging mode.
  • a communication time interval between the power adapter and the mobile terminal is less than a preset time interval threshold, otherwise exiting the fast charging mode or re-determining whether to open The fast charging mode is described.
  • the stopping of the fast charging mode includes two stopping modes: a recoverable stop mode and an unrecoverable stop mode, in the recoverable stop mode, the power adapter or the The mobile terminal re-opens the fast charging mode, and performs handshake communication with the mobile terminal again; in the unrecoverable stop mode, the power adapter or the mobile terminal no longer turns on the fast charging mode, and uses The normal charging mode charges the mobile terminal or no longer charges the mobile terminal.
  • the case where the recoverable stop mode is applicable includes: a communication abnormality occurs between the power adapter and the mobile terminal, or an abnormality occurs in a battery of the mobile terminal, the fast charging The mode is stopped, the power adapter re-query whether the mobile terminal agrees to enable the fast charging mode, and the mobile terminal agrees to re-enable the fast charging mode; or the unrecoverable stop mode is applicable to: The battery of the mobile terminal is full or the USB interface is poorly contacted, and the power adapter re-query whether the mobile terminal turns on the fast charging mode, and the mobile terminal does not agree to turn on the fast charging mode.
  • the method of FIG. 7 further includes: the power adapter determining whether a data line connecting the power adapter and the USB interface of the mobile terminal is a data line supporting the fast charging mode.
  • the fast charging mode is stopped.
  • the power adapter in a process in which the power adapter communicates with the mobile terminal, serves as a host, and provides a clock signal for synchronization between the power adapter and the mobile terminal.
  • the power adapter provides the clock signal through a D+ data line in the USB interface, and the power adapter and the mobile terminal perform a D-data line in the USB interface. Communicate and/or transmit data.
  • the communication and/or charging process between the power adapter and the mobile terminal is performed based on an open loop current segmentation constant current VOOC flash charging technology or a VOOC flash charging communication protocol.
  • FIG. 8 is a schematic flowchart of a fast charging method according to an embodiment of the present invention.
  • the method of FIG. 8 is applicable to a mobile terminal, and the mobile terminal is connected to a power adapter through a universal serial bus USB interface, and a power line in the USB interface is used to charge the mobile terminal, data in the USB interface
  • the line is used for two-way communication between the mobile terminal and the power adapter, and the mobile terminal supports a normal charging mode and a fast charging mode, wherein the charging current of the fast charging mode is greater than the charging current of the normal charging mode,
  • FIG. 8 The methods include:
  • the mobile terminal determines to enable the fast charging mode.
  • the mobile terminal performs handshake communication with the power adapter by using a second instruction sent by the power adapter to determine a charging voltage corresponding to the fast charging mode.
  • the mobile terminal performs handshake communication with the power adapter by using a third command sent by the power adapter to determine a charging current corresponding to the fast charging mode.
  • the power adapter After the power adapter adjusts the output voltage and the output current to the charging voltage and the charging current corresponding to the fast charging mode, after entering the constant current phase, the fourth instruction and the fourth terminal sent by the mobile terminal by using the power adapter The power adapter performs handshake communication such that the power adapter adjusts the output current to charge the mobile terminal in the form of a piecewise constant current.
  • the power adapter does not blindly increase the output current for fast charging, but needs to perform two-way communication with the mobile terminal, and negotiate whether the fast charging mode can be adopted, which improves the fast charging process compared with the prior art. safety.
  • the mobile terminal determines that the fast charging mode is enabled, and the mobile terminal performs handshake communication with the mobile terminal by using a first instruction sent by the power adapter to determine to open the location.
  • the fast charging mode is described.
  • the mobile terminal performs handshake communication with the mobile terminal by using a first instruction sent by the power adapter to determine to enable the fast charging mode, including: the mobile terminal from the The power adapter receives the first instruction, the first instruction is used to query whether the mobile terminal turns on the fast charging mode; the mobile terminal sends a reply instruction of the first instruction to the power adapter, The reply instruction of the first instruction is used to instruct the mobile terminal to agree to turn on the fast charging mode.
  • the reply instruction of the first instruction includes Impedance information of the mobile terminal path impedance, the impedance information being used by the power adapter to determine whether the USB interface is in poor contact during the constant current phase.
  • the method of FIG. 8 may further include: during connection with the power adapter, the mobile terminal detects the D+ data line and the D-data line in the USB interface a type of power adapter; the mobile terminal receives a charging current from the power adapter, the charging current being greater than a preset current threshold; the mobile terminal receiving the first instruction from the power adapter, including: After the power adapter detects that the charging current provided by the power adapter for the mobile terminal is greater than or equal to the current threshold for a preset duration, the mobile terminal receives the first instruction from the power adapter.
  • the mobile terminal determines to enable the fast charging mode, and the method includes: the mobile terminal sending an inquiry message to the power adapter, where the inquiry message is used to query whether the power adapter supports the a fast charging mode; the mobile terminal receives a response message from the power adapter, the response message is used to indicate that the power adapter supports the fast charging mode; and the mobile terminal sends an indication message to the power adapter The indication message is used to instruct the power adapter to turn on the fast charging mode.
  • the mobile terminal performs handshake communication with the power adapter by using a second instruction sent by the power adapter to determine a charging voltage corresponding to the fast charging mode, including: the mobile terminal.
  • a second instruction sent by the power adapter to determine a charging voltage corresponding to the fast charging mode
  • the mobile terminal receives, from the power adapter, the second instruction, the second instruction being used to query whether a current output voltage of the power adapter is suitable as a charging voltage of the fast charging mode; the mobile terminal sends the power adapter to the power adapter a reply instruction of the second instruction, where the reply instruction of the second instruction is used to indicate that the current output voltage of the power adapter is suitable, high or low, so that the power adapter responds according to the second instruction Determining a charging voltage corresponding to the fast charging mode.
  • the sending, by the mobile terminal, the reply instruction of the second instruction to the power adapter includes: when the mobile terminal determines that a current output voltage of the power adapter is higher than the mobile terminal
  • the battery terminal sends a response command of the second instruction to the power adapter when a voltage difference between a current output voltage of the power adapter and the battery voltage is within a preset differential pressure threshold range
  • the reply instruction of the second instruction is used to indicate that the current output voltage of the power adapter is appropriate.
  • the differential pressure threshold is in the range of 200 mV to 500 mV.
  • the method of FIG. 8 further includes: the mobile terminal determining is based on The length of the handshake communication process of the second instruction; when the time length is greater than a preset time length threshold, the mobile terminal confirms that the process of the handshake communication of the second instruction is abnormal, and exits the fast charging mode. Handshake the communication process, or re-determine whether to start the fast charge mode.
  • the mobile terminal performs handshake communication with the power adapter by using a third instruction sent by the power adapter to determine a charging current corresponding to the fast charging mode, including: the mobile terminal.
  • a third instruction sent by the power adapter to determine a charging current corresponding to the fast charging mode, including: the mobile terminal.
  • Receiving, from the power adapter, the third instruction, the third instruction is used to query a maximum charging current currently supported by the mobile terminal; the mobile terminal sends a reply instruction of a third instruction to the power adapter,
  • the reply instruction of the third instruction is used to indicate a maximum charging current currently supported by the mobile terminal, so that the power adapter determines a charging current corresponding to the fast charging mode according to the return instruction of the third instruction.
  • the mobile terminal performs handshake communication with the power adapter by using a fourth command sent by the power adapter, so that the power adapter adjusts an output current, including: in the constant current phase,
  • the mobile terminal receives a fourth command from the power adapter, the fourth command is used to query a current voltage of a battery in the mobile terminal; and the mobile terminal sends a reply to the fourth command to the power adapter
  • the instruction, the reply instruction of the fourth instruction is used to indicate a current voltage of a battery in the mobile terminal, so that the power adapter adjusts an output current of the power adapter according to a current voltage of the battery.
  • the mobile terminal receives a fourth instruction from the power adapter, where the fourth instruction is used to query a current voltage of a battery in the mobile terminal.
  • the method includes: in the constant current phase, the mobile terminal receives the fourth instruction from the power adapter once every predetermined time interval.
  • the adjustment current of the output current of the power adapter is less than or equal to the current output current of the power adapter during each adjustment of the output current of the power adapter. 5%.
  • the method of FIG. 8 may further include: the mobile terminal transmitting, to the power adapter, information indicating a path impedance of the mobile terminal, so that the power adapter is in the constant current Determining, according to the path impedance, whether the USB interface is in poor contact; when the power adapter determines that the USB interface is in poor contact, the mobile terminal receives a fifth instruction from the power adapter, and the fifth instruction is used to Instructing the USB interface to be in poor contact, the power adapter is ready to exit the fast charging mode or re-determine whether to enable the fast charging mode.
  • a communication time interval between the power adapter and the mobile terminal is less than a preset time interval threshold, otherwise exiting the fast charging mode or restarting the fast Charging mode.
  • the stopping of the fast charging mode includes two stopping modes: a recoverable stop mode and an unrecoverable stop mode, in the recoverable stop mode, the power adapter or the The mobile terminal re-opens the fast charging mode, and performs handshake communication with the mobile terminal again; in the unrecoverable stop mode, the power adapter or the mobile terminal no longer turns on the fast charging mode, and uses The normal charging mode charges the mobile terminal or no longer charges the mobile terminal.
  • the case where the recoverable stop mode is applicable includes: a communication abnormality occurs between the power adapter and the mobile terminal, or an abnormality occurs in a battery of the mobile terminal, the fast charging The mode is stopped, the power adapter re-query whether the mobile terminal agrees to enable the fast charging mode, and the mobile terminal agrees to re-enable the fast charging mode; or the unrecoverable stop mode is applicable to: The battery of the mobile terminal is full or the USB interface is poorly contacted, and the power adapter re-query whether the mobile terminal turns on the fast charging mode, and the mobile terminal does not agree to turn on the fast charging mode.
  • the method of FIG. 8 further includes: the mobile terminal determining whether a data line connecting the power adapter and the USB interface of the mobile terminal is a data line supporting the fast charging mode.
  • the fast charging mode is stopped.
  • the power adapter in a process in which the power adapter communicates with the mobile terminal, serves as a host, and provides a clock signal for synchronization between the power adapter and the mobile terminal.
  • the power adapter provides the clock signal through a D+ data line in the USB interface, and the power adapter and the mobile terminal perform a D-data line in the USB interface. Communicate and/or transmit data.
  • the communication and/or charging process between the power adapter and the mobile terminal is performed based on an open loop current segmentation constant current VOOC flash charging technology or a VOOC flash charging communication protocol.
  • the fast charging method of the embodiment of the present invention is described in detail above with reference to FIG. 7 and FIG.
  • the power adapter and the mobile terminal of the embodiment of the present invention will be described in detail with reference to FIGS. 9 to 10. It should be understood that the power adapter and the mobile terminal in FIGS. 9 to 10 can implement the respective steps performed by the power adapter and the mobile terminal in FIGS. 7 to 8, and the duplicated description is appropriately omitted for the sake of brevity.
  • FIG. 9 is a schematic block diagram of a power adapter of an embodiment of the present invention.
  • the power adapter 900 of FIG. 9 is connected to the mobile terminal via a universal serial bus USB interface, and a power cord in the USB interface is used for the power adapter 900 to charge the mobile terminal, and a data line in the USB interface is used for
  • the power adapter 900 and the mobile terminal perform two-way communication, and the power adapter 900 supports a normal charging mode and a fast charging mode, wherein the charging current of the fast charging mode is greater than the charging current of the normal charging mode, the power source
  • the adapter 900 includes: a communication control circuit 910 (or a communication circuit) and a charging circuit 920,
  • the communication control circuit 910 is configured to determine to enable the fast charging mode; perform handshake communication with the mobile terminal by using a second instruction to determine a charging voltage corresponding to the fast charging mode; and the mobile terminal by using a third instruction Performing handshake communication to determine a charging current corresponding to the fast charging mode; adjusting an output voltage and an output current to a charging voltage and a charging current corresponding to the fast charging mode, entering a constant current phase; and in the constant current phase, passing
  • the fourth instruction performs handshake communication with the mobile terminal to adjust an output current of the power adapter, thereby controlling the charging circuit 920 to charge the mobile terminal in the form of a piecewise constant current.
  • the power adapter does not blindly increase the output current for fast charging, but needs to perform two-way communication with the mobile terminal, and negotiate whether the fast charging mode can be adopted, which improves the fast charging process compared with the prior art. safety.
  • the communications control circuit 910 is specifically configured to perform handshake communication with the mobile terminal by using a first instruction to determine to enable the fast charging mode.
  • the communications control circuit 910 is specifically configured to send, by the power adapter, the first instruction to the mobile terminal, where the first instruction is used to query whether the mobile terminal enables the a fast charging mode; receiving a reply instruction of the first instruction from the mobile terminal; determining to turn on the fast charging mode when the reply instruction of the first instruction instructs the mobile terminal to agree to enable the fast charging mode.
  • the reply instruction of the first instruction includes impedance information for indicating a path impedance of the mobile terminal, and the impedance information is used by the power adapter to determine the constant current phase
  • the USB interface is not in good contact.
  • the communication control circuit 910 is specifically configured to be used in the In the process of connecting the mobile terminal, when the power adapter detects that the charging current provided by the power adapter for the mobile terminal is greater than or equal to a preset current threshold for a preset duration, it is confirmed that the mobile terminal has been completed. Identification of the type of the power adapter; after the power adapter confirms that the mobile terminal has identified the type of the power adapter, the power adapter transmits the first instruction to the mobile terminal.
  • the communication control circuit 910 is further configured to: when the reply instruction of the first instruction indicates that the mobile terminal does not agree to enable the fast charging mode, the power adapter repeatedly performs the foregoing charging The current detection process and the first command handshake communication process until the mobile terminal agrees to turn on the fast charge mode or the charge current is less than the current threshold.
  • the communication control circuit 910 is further configured to receive an inquiry message from the mobile terminal, where the inquiry message is used to query whether the power adapter supports the fast charging mode;
  • the terminal sends a response message, the response message is used to indicate that the power adapter supports the fast charging mode, and receives an indication message from the mobile terminal, the indication message is used to instruct the power adapter to enable the fast charging mode.
  • the communication control circuit 910 is specifically configured to send the second instruction to the mobile terminal, where the second instruction is used to query whether a current output voltage of the power adapter is suitable as a a charging voltage of the fast charging mode; receiving a reply instruction of the second instruction sent by the mobile terminal, where the reply instruction of the second instruction is used to indicate that the current output voltage of the power adapter is suitable, high or low
  • the reply instruction of the second instruction indicates that the current output voltage of the power adapter is appropriate, determining a current output voltage of the power adapter as a charging voltage corresponding to the fast charging mode; when the second instruction When the reply command indicates that the current output voltage of the power adapter is high or low, adjusting the current output voltage of the power adapter according to the return instruction of the second instruction, and repeatedly performing the handshake communication process based on the second instruction, Continuously adjusting the current output voltage of the power adapter until the return command of the second command indicates The output voltage of the current until the appropriate power adapter.
  • the communication control circuit 910 is further configured to determine a length of time of the handshake communication process based on the second instruction; when the time length is greater than a preset time length threshold, confirm the The process of the handshake communication of the second instruction is abnormal, the handshake communication process of the fast charge mode is exited, or whether the fast charge mode is started is re-determined.
  • the communication control circuit 910 is specifically configured to move to the mobile Transmitting, by the terminal, the third instruction, the third instruction is used to query a maximum charging current currently supported by the mobile terminal, and receiving a reply instruction of the third instruction sent by the mobile terminal, and the reply of the third instruction
  • the instruction is used to indicate a maximum charging current currently supported by the mobile terminal; and determining a charging current of the fast charging mode according to the return instruction of the third instruction.
  • the communication control circuit 910 is specifically configured to adjust an output current to a charging current corresponding to the fast charging mode by controlling a current adjustment speed, where the current adjustment speed is preset. Current speed adjustment range.
  • the communication control circuit 910 is specifically configured to: in the constant current phase, the power adapter sends a fourth instruction to the mobile terminal, where the fourth instruction is used to query the mobile a current voltage of the battery in the terminal; receiving a reply command of the fourth command sent by the mobile terminal, the reply command of the fourth command is used to indicate a current voltage of a battery in the mobile terminal; The current voltage is adjusted to the output current of the power adapter.
  • the communications control circuit 910 is specifically configured to send the fourth instruction to the mobile terminal once every predetermined period of time in the constant current phase.
  • the adjustment current of the output current of the power adapter is less than or equal to the current output current of the power adapter during each adjustment of the output current of the power adapter. 5%.
  • the communication control circuit 910 is further configured to receive, from the mobile terminal, impedance information for indicating a path impedance of the mobile terminal; in the constant current phase, according to the power adapter a current output voltage and a current voltage of the battery, determining a charging loop impedance of the power adapter to the battery; according to the charging loop impedance, a path impedance of the mobile terminal, and the power adapter and the moving
  • the path impedance of the charging line line between the terminals determines whether the USB interface is in poor contact; when the USB interface is in poor contact, the power adapter exits the fast charging mode or re-determines whether the fast charging mode is turned on.
  • the communication control circuit 910 is further configured to send, when the USB interface is in poor contact, a fifth instruction, where the fifth instruction is used to indicate that the USB interface is in contact Poor, the power adapter is ready to exit the fast charging mode or re-determine whether to enable the fast charging mode.
  • a communication time interval between the power adapter and the mobile terminal is less than a preset time interval threshold, otherwise exiting the fast charging mode or re-determining whether to open The fast charging mode is described.
  • the stopping of the fast charging mode includes two stopping modes: a recoverable stop mode and an unrecoverable stop mode, in the recoverable stop mode, the power adapter or the The mobile terminal re-opens the fast charging mode, and performs handshake communication with the mobile terminal again; in the unrecoverable stop mode, the power adapter or the mobile terminal no longer turns on the fast charging mode, and uses The normal charging mode charges the mobile terminal or no longer charges the mobile terminal.
  • the case where the recoverable stop mode is applicable includes: a communication abnormality occurs between the power adapter and the mobile terminal, or an abnormality occurs in a battery of the mobile terminal, the fast charging The mode is stopped, the power adapter re-query whether the mobile terminal agrees to enable the fast charging mode, and the mobile terminal agrees to re-enable the fast charging mode; or the unrecoverable stop mode is applicable to: The battery of the mobile terminal is full or the USB interface is poorly contacted, and the power adapter re-query whether the mobile terminal turns on the fast charging mode, and the mobile terminal does not agree to turn on the fast charging mode.
  • the communication control circuit 910 is further configured to determine whether a data line connecting the power adapter and the USB interface of the mobile terminal is a data line supporting the fast charging mode.
  • the fast charging mode is stopped.
  • the power adapter in a process in which the power adapter communicates with the mobile terminal, serves as a host, and provides a clock signal for synchronization between the power adapter and the mobile terminal.
  • the power adapter provides the clock signal through a D+ data line in the USB interface, and the power adapter and the mobile terminal perform a D-data line in the USB interface. Communicate and/or transmit data.
  • the communication and/or charging process between the power adapter and the mobile terminal is performed based on an open loop current segmentation constant current VOOC flash charging technology or a VOOC flash charging communication protocol.
  • FIG. 10 is a schematic block diagram of a mobile terminal according to an embodiment of the present invention.
  • the mobile terminal 1000 of FIG. 10 is connected to a power adapter through a universal serial bus USB interface, and a power line in the USB interface is used to charge the mobile terminal 1000, and a data line in the USB interface is used for the mobile terminal 1000 and the power adapter perform two-way communication, and the mobile terminal 1000 supports normal charging a mode and a fast charging mode, wherein a charging current of the fast charging mode is greater than a charging current of the normal charging mode, the mobile terminal 1000 comprising: a communication control circuit 1010 (or a communication circuit) and a charging circuit 1020,
  • the communication control circuit 1010 is configured to determine to enable the fast charging mode; perform a handshake communication with the power adapter by using a second instruction sent by the power adapter to determine a charging voltage corresponding to the fast charging mode; And transmitting, by the power adapter, a handshake instruction to communicate with the power adapter to determine a charging current corresponding to the fast charging mode; and adjusting, by the power adapter, an output voltage and an output current to a charging voltage corresponding to the fast charging mode And charging current, after entering the constant current phase, the fourth instruction sent by the power adapter performs handshake communication with the power adapter, so that the power adapter adjusts the output current to pass the charging circuit in the form of piecewise constant current 1020 charges the mobile terminal.
  • the power adapter does not blindly increase the output current for fast charging, but needs to perform two-way communication with the mobile terminal, and negotiate whether the fast charging mode can be adopted, which improves the fast charging process compared with the prior art. safety.
  • the communication control circuit 1010 is specifically configured to perform handshake communication with the mobile terminal by using a first instruction sent by the power adapter to determine to enable the fast charging mode.
  • the communication control circuit 1010 is specifically configured to receive the first instruction from the power adapter, where the first instruction is used to query whether the mobile terminal turns on the fast charging mode; And sending a reply instruction of the first instruction to the power adapter, where the reply instruction of the first instruction is used to indicate that the mobile terminal agrees to enable the fast charging mode.
  • the reply instruction of the first instruction includes impedance information for indicating a path impedance of the mobile terminal, and the impedance information is used by the power adapter to determine the constant current phase
  • the USB interface is not in good contact.
  • the communication control circuit 1010 is further configured to detect, by the D+ data line and the D-data line in the USB interface, the power adapter during a connection with the power adapter. Receiving a charging current from the power adapter, the charging current being greater than a preset current threshold; the communication control circuit 1010 is specifically configured to detect, by the power adapter, that the power adapter provides charging for the mobile terminal The first command is received from the power adapter after the current is greater than or equal to the current threshold for a predetermined length of time.
  • the communications control circuit 1010 is specifically configured to send the electrical
  • the source adapter sends an inquiry message for querying whether the power adapter supports the fast charging mode; receiving a response message from the power adapter, the response message indicating that the power adapter supports the fast charging a mode; sending an indication message to the power adapter, the indication message being used to instruct the power adapter to turn on the fast charging mode.
  • the communication control circuit 1010 is specifically configured to receive the second instruction from the power adapter, where the second instruction is used to query whether a current output voltage of the power adapter is suitable as a a charging voltage of the fast charging mode; sending a reply instruction of the second instruction to the power adapter, where the reply instruction of the second instruction is used to indicate that the current output voltage of the power adapter is suitable, high or low,
  • the power adapter determines the charging voltage corresponding to the fast charging mode according to the return instruction of the second instruction.
  • the communication control circuit 1010 is specifically configured to: when the mobile terminal determines that a current output voltage of the power adapter is higher than a battery voltage of the mobile terminal, and the current output of the power adapter Sending a reply instruction of the second instruction to the power adapter when a voltage difference between the voltage and the battery voltage is within a preset pressure difference threshold, the reply instruction of the second instruction is used to indicate the power adapter The current output voltage is appropriate.
  • the differential pressure threshold is in the range of 200 mV to 500 mV.
  • the communication control circuit 1010 is further configured to determine a length of time of the handshake communication process based on the second instruction; when the time length is greater than a preset time length threshold, confirm the The process of the handshake communication of the second instruction is abnormal, the handshake communication process of the fast charge mode is exited, or whether the fast charge mode is started is re-determined.
  • the communications control circuit 1010 is specifically configured to receive, by the power adapter, the third instruction, where the third command is used to query a maximum charging current currently supported by the mobile terminal;
  • the power adapter sends a reply instruction of the third instruction, where the reply instruction of the third instruction is used to indicate a maximum charging current currently supported by the mobile terminal, so that the power adapter determines according to the reply instruction of the third instruction.
  • the charging current corresponding to the fast charging mode.
  • the communication control circuit 1010 is specifically configured to: in the constant current phase, the mobile terminal receives a fourth instruction from the power adapter, where the fourth instruction is used to query the mobile a current voltage of the battery in the terminal; a reply command of the fourth command is sent to the power adapter, and the reply command of the fourth command is used to indicate a current voltage of the battery in the mobile terminal, so that the power adapter Adjusting the power supply according to the current voltage of the battery The output current of the adapter.
  • the communication control circuit 1010 is specifically configured to receive the fourth instruction from the power adapter once every predetermined period of time in the constant current phase.
  • the adjustment current of the output current of the power adapter is less than or equal to the current output current of the power adapter during each adjustment of the output current of the power adapter. 5%.
  • the communication control circuit 1010 is further configured to send, to the power adapter, information for indicating a path impedance of the mobile terminal, so that the power adapter is configured according to the constant current stage.
  • the path impedance determines whether the USB interface is in poor contact; when the power adapter determines that the USB interface is in poor contact, receiving a fifth command from the power adapter, the fifth command is used to indicate that the USB interface is in poor contact.
  • the power adapter is ready to exit the fast charging mode or to re-determine whether the fast charging mode is turned on.
  • a communication time interval between the power adapter and the mobile terminal is less than a preset time interval threshold, otherwise exiting the fast charging mode or restarting the fast Charging mode.
  • the stopping of the fast charging mode includes two stopping modes: a recoverable stop mode and an unrecoverable stop mode, in the recoverable stop mode, the power adapter or the The mobile terminal re-opens the fast charging mode, and performs handshake communication with the mobile terminal again; in the unrecoverable stop mode, the power adapter or the mobile terminal no longer turns on the fast charging mode, and uses The normal charging mode charges the mobile terminal or no longer charges the mobile terminal.
  • the case where the recoverable stop mode is applicable includes: a communication abnormality occurs between the power adapter and the mobile terminal, or an abnormality occurs in a battery of the mobile terminal, the fast charging The mode is stopped, the power adapter re-query whether the mobile terminal agrees to enable the fast charging mode, and the mobile terminal agrees to re-enable the fast charging mode; or the unrecoverable stop mode is applicable to: The battery of the mobile terminal is full or the USB interface is poorly contacted, and the power adapter re-query whether the mobile terminal turns on the fast charging mode, and the mobile terminal does not agree to turn on the fast charging mode.
  • the communication control circuit 1010 is further configured to determine whether a data line connecting the power adapter and the USB interface of the mobile terminal is to support the fast charging. Electrical mode data line.
  • the fast charging mode is stopped.
  • the power adapter in a process in which the power adapter communicates with the mobile terminal, serves as a host, and provides a clock signal for synchronization between the power adapter and the mobile terminal.
  • the power adapter provides the clock signal through a D+ data line in the USB interface, and the power adapter and the mobile terminal perform a D-data line in the USB interface. Communicate and/or transmit data.
  • the communication and/or charging process between the power adapter and the mobile terminal is performed based on an open loop current segmentation constant current VOOC flash charging technology or a VOOC flash charging communication protocol.
  • the disclosed systems, devices, and methods may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product.
  • the technical solution of the present invention which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including
  • the instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. .

Abstract

本发明提供一种快速充电方法、电源适配器和终端,该方法应用于电源适配器,电源适配器与移动终端通过USB接口相连,USB接口中的电源线用于电源适配器为移动终端充电,USB接口中的数据线用于电源适配器和移动终端进行双向通信,电源适配器支持普通充电模式和快速充电模式,其中快速充电模式的充电电流大于普通充电模式的充电电流,该方法包括:电源适配器通过USB接口中的数据线与移动终端进行双向通信,以确定使用快速充电模式为移动终端充电;电源适配器将充电电流调整至快速充电模式对应的充电电流,为移动终端充电。本发明实施例提升了快速充电过程的安全性。

Description

快速充电方法、电源适配器和移动终端 技术领域
本发明实施例涉及充电领域,并且更具体地,涉及一种快速充电方法、电源适配器和移动终端。
背景技术
目前,移动终端(如智能手机)越来越受到消费者的青睐,但是移动终端耗电量大,通常需要经常充电。随着移动终端的电池容量越来越高,充电时间相应变长。如何实现快速充电亟待解决。
现有技术中,为了达到快速充电的目的,通常不考虑移动终端的承受能力,直接增大电源适配器的输出电流,这样会导致移动终端过热甚至烧坏等现象,降低了移动终端的使用寿命。
发明内容
本发明实施例提供一种快速充电方法、电源适配器和移动终端,以提高快速充电过程的安全性。
第一方面,提供一种快速充电方法,所述方法应用于电源适配器,所述电源适配器与移动终端通过USB接口相连,所述USB接口中的电源线用于所述电源适配器为所述移动终端充电,所述USB接口中的数据线用于所述电源适配器和所述移动终端进行双向通信,所述电源适配器支持普通充电模式和快速充电模式,其中所述快速充电模式的充电电流大于所述普通充电模式的充电电流,所述方法包括:所述电源适配器通过所述USB接口中的数据线与所述移动终端进行双向通信,以确定使用所述快速充电模式为所述移动终端充电;所述电源适配器将充电电流调整至所述快速充电模式对应的充电电流,为所述移动终端充电。
结合第一方面,在第一方面的一种实现方式中,所述电源适配器通过所述USB接口中的数据线与所述移动终端进行双向通信,以确定使用所述快速充电模式为所述移动终端充电,包括:所述电源适配器向所述移动终端发送第一指令,所述第一指令用于询问所述移动终端是否开启所述快速充电模式;所述电源适配器从所述移动终端接收所述第一指令的回复指令,所述第 一指令的回复指令用于指示所述移动终端同意开启所述快速充电模式。
结合第一方面或其上述实现方式的任一种,在第一方面的另一种实现方式中,在所述电源适配器向所述移动终端发送第一指令之前,所述方法还包括:所述电源适配器与所述移动终端之间通过所述普通充电模式充电;所述电源适配器向所述移动终端发送第一指令,包括:所述电源适配器确定所述普通充电模式的充电时长大于预设阈值后,向所述移动终端发送所述第一指令。
结合第一方面或其上述实现方式的任一种,在第一方面的另一种实现方式中,在所述电源适配器将充电电流调整至所述快速充电模式对应的充电电流,为所述移动终端充电之前,所述方法包括:所述电源适配器通过所述USB接口中的数据线与所述移动终端进行双向通信,以确定所述快速充电模式对应的充电电压;所述电源适配器将充电电压调整至所述快速充电模式对应的充电电压。
结合第一方面或其上述实现方式的任一种,在第一方面的另一种实现方式中,所述电源适配器通过所述USB接口中的数据线与所述移动终端进行双向通信,以确定所述快速充电模式对应的充电电压,包括:所述电源适配器向所述移动终端发送第二指令,所述第二指令用于询问所述电源适配器的当前电压是否适合作为所述快速充电模式的充电电压;所述电源适配器接收所述移动终端发送的所述第二指令的回复指令,所述第二指令的回复指令用于指示所述电源适配器的当前电压合适、偏高或偏低;所述电源适配器根据所述第二指令的回复指令,确定所述快速充电模式的充电电压。
结合第一方面或其上述实现方式的任一种,在第一方面的另一种实现方式中,在所述电源适配器将充电电流调整至所述快速充电模式对应的充电电流,为所述移动终端充电之前,所述方法包括:所述电源适配器通过所述USB接口中的数据线与所述移动终端进行双向通信,以确定所述快速充电模式对应的充电电流。
结合第一方面或其上述实现方式的任一种,在第一方面的另一种实现方式中,所述电源适配器通过所述USB接口中的数据线与所述移动终端进行双向通信,以确定所述快速充电模式对应的充电电流,包括:所述电源适配器向所述移动终端发送第三指令,所述第三指令用于询问所述移动终端当前支持的最大充电电流;所述电源适配器接收所述移动终端发送的所述第三指 令的回复指令,所述第三指令的回复指令用于指示所述移动终端当前支持的最大充电电流;所述电源适配器根据所述第三指令的回复指令,确定所述快速充电模式的充电电流。
结合第一方面或其上述实现方式的任一种,在第一方面的另一种实现方式中,所述方法还包括:在所述电源适配器使用所述快速充电模式为所述移动终端充电的过程中,所述电源适配器通过所述USB接口中的数据线与所述移动终端进行双向通信,以不断调整所述电源适配器的充电电流。
结合第一方面或其上述实现方式的任一种,在第一方面的另一种实现方式中,所述电源适配器通过所述USB接口中的数据线与所述移动终端进行双向通信,以不断调整所述电源适配器的充电电流,包括:所述电源适配器向所述移动终端发送第四指令,所述第四指令用于询问所述移动终端内的电池的当前电压;所述电源适配器接收所述移动终端发送的所述第四指令的回复指令,所述第四指令的回复指令用于指示所述移动终端内的电池的当前电压;所述电源适配器根据所述电池的当前电压,调整所述充电电流。
结合第一方面或其上述实现方式的任一种,在第一方面的另一种实现方式中,所述电源适配器根据所述电池的当前电压,调整所述充电电流,包括:所述电源适配器根据所述电池的当前电压,以及预设的电池电压值和充电电流值的对应关系,将所述电源适配器的充电电流调整至所述电池的当前电压对应的充电电流值。
结合第一方面或其上述实现方式的任一种,在第一方面的另一种实现方式中,所述方法还包括:在所述电源适配器使用所述快速充电模式为所述移动终端充电的过程中,所述电源适配器通过所述USB接口中的数据线与所述移动终端进行双向通信,以确定所述USB接口是否接触不良;当确定所述USB接口接触不良时,所述电源适配器退出所述快速充电模式。
结合第一方面或其上述实现方式的任一种,在第一方面的另一种实现方式中,在所述电源适配器通过所述USB接口中的数据线与所述移动终端进行双向通信,以确定所述USB接口是否接触不良之前,所述方法还包括:所述电源适配器从所述移动终端接收用于指示所述移动终端的通路阻抗的信息;所述电源适配器通过所述USB接口中的数据线与所述移动终端进行双向通信,以确定所述USB接口是否接触不良,包括:所述电源适配器向所述移动终端发送第四指令,所述第四指令用于询问所述移动终端内的电池 的电压;所述电源适配器接收所述移动终端发送的所述第四指令的回复指令,所述第四指令的回复指令用于指示所述移动终端内的电池的电压;所述电源适配器根据所述电源适配器的充电电压和所述电池的电压,确定所述电源适配器到所述电池的通路阻抗;所述电源适配器根据所述电源适配器到所述电池的通路阻抗、所述移动终端的通路阻抗,以及所述电源适配器和所述移动终端之间的充电线线路的通路阻抗,确定所述USB接口是否接触不良。
结合第一方面或其上述实现方式的任一种,在第一方面的另一种实现方式中,在所述电源适配器退出所述快速充电模式之前,所述方法还包括:所述电源适配器向所述移动终端发送第五指令,所述第五指令用于指示所述USB接口接触不良。
第二方面,提供一种快速充电方法,所述方法应用于移动终端,所述移动终端与电源适配器通过USB接口相连,所述USB接口中的电源线用于为所述移动终端充电,所述USB接口中的数据线用于所述移动终端和所述电源适配器进行双向通信,所述移动终端支持普通充电模式和快速充电模式,其中所述快速充电模式的充电电流大于所述普通充电模式的充电电流,所述方法包括:所述移动终端通过所述USB接口中的数据线与所述电源适配器进行双向通信,以便所述电源适配器确定使用所述快速充电模式为所述移动终端充电;所述移动终端从所述电源适配器接收所述快速充电模式对应的充电电流,为所述移动终端内的电池充电。
结合第二方面,在第二方面的一种实现方式中,所述移动终端通过所述USB接口中的数据线与所述电源适配器进行双向通信,以便所述电源适配器确定使用所述快速充电模式为所述移动终端充电,包括:所述移动终端接收所述电源适配器发送的第一指令,所述第一指令用于询问所述移动终端是否开启所述快速充电模式;所述移动终端向所述电源适配器发送所述第一指令的回复指令,所述第一指令的回复指令用于指示所述移动终端同意开启所述快速充电模式。
结合第二方面或其上述实现方式的任一种,在第二方面的另一种实现方式中,在所述移动终端接收所述电源适配器发送的第一指令之前,所述方法还包括:所述移动终端与所述电源适配器之间通过所述普通充电模式充电;所述移动终端接收所述电源适配器发送的第一指令,包括:所述电源适配器确定所述普通充电模式的充电时长大于预设阈值后,所述移动终端接收所述 电源适配器发送的所述第一指令。
结合第二方面或其上述实现方式的任一种,在第二方面的另一种实现方式中,在所述移动终端从所述电源适配器接收所述快速充电模式对应的充电电流,为所述移动终端内的电池充电之前,所述方法包括:所述移动终端通过所述USB接口中的数据线与所述电源适配器进行双向通信,以便所述电源适配器确定所述快速充电模式对应的充电电压。
结合第二方面或其上述实现方式的任一种,在第二方面的另一种实现方式中,所述移动终端通过所述USB接口中的数据线与所述电源适配器进行双向通信,以便所述电源适配器确定所述快速充电模式对应的充电电压,包括:所述移动终端接收所述电源适配器发送的第二指令,所述第二指令用于询问所述电源适配器的当前电压是否适合作为所述快速充电模式的充电电压;所述移动终端向所述电源适配器发送所述第二指令的回复指令,所述第二指令的回复指令用于指示所述电源适配器的当前电压合适、偏高或偏低。
结合第二方面或其上述实现方式的任一种,在第二方面的另一种实现方式中,在所述移动终端从所述电源适配器接收所述快速充电模式对应的充电电流,为所述移动终端内的电池充电之前,所述方法包括:所述移动终端通过所述USB接口中的数据线与所述电源适配器进行双向通信,以便所述电源适配器确定所述快速充电模式对应的充电电流。
结合第二方面或其上述实现方式的任一种,在第二方面的另一种实现方式中,所述移动终端通过所述USB接口中的数据线与所述电源适配器进行双向通信,以便所述电源适配器确定所述快速充电模式对应的充电电流,包括:所述移动终端接收所述电源适配器发送的第三指令,所述第三指令用于询问所述移动终端当前支持的最大充电电流;所述移动终端向所述电源适配器发送所述第三指令的回复指令,所述第三指令的回复指令用于指示所述移动终端当前支持的最大充电电流,以便所述电源适配器根据所述最大充电电流确定所述快速充电模式对应的充电电流。
结合第二方面或其上述实现方式的任一种,在第二方面的另一种实现方式中,所述方法还包括:在所述电源适配器使用所述快速充电模式为所述移动终端充电的过程中,所述移动终端通过所述USB接口中的数据线与所述电源适配器进行双向通信,以便所述电源适配器不断调整所述电源适配器的充电电流。
结合第二方面或其上述实现方式的任一种,在第二方面的另一种实现方式中,所述移动终端通过所述USB接口中的数据线与所述电源适配器进行双向通信,以便所述电源适配器不断调整所述电源适配器的充电电流,包括:所述移动终端接收所述电源适配器发送的第四指令,所述第四指令用于询问所述移动终端内的电池的当前电压;所述移动终端向所述电源适配器发送所述第四指令的回复指令,所述第四指令的回复指令用于指示所述移动终端内的电池的当前电压,以便所述电源适配器根据所述电池的当前电压,不断调整所述电源适配器的充电电流。
结合第二方面或其上述实现方式的任一种,在第二方面的另一种实现方式中,所述方法还包括:在所述电源适配器使用所述快速充电模式为所述移动终端充电的过程中,所述移动终端通过所述USB接口中的数据线与所述电源适配器进行双向通信,以便所述电源适配器确定所述USB接口是否接触不良。
结合第二方面或其上述实现方式的任一种,在第二方面的另一种实现方式中,所述移动终端通过所述USB接口中的数据线与所述电源适配器进行双向通信,以便所述电源适配器确定所述USB接口是否接触不良,包括:所述移动终端接收所述电源适配器发送的第四指令,所述第四指令用于询问所述移动终端内的电池的当前电压;所述移动终端向所述电源适配器发送所述第四指令的回复指令,所述第四指令的回复指令用于指示所述移动终端内的电池的当前电压,以便所述电源适配器根据所述充电适配器的充电电压和所述电池的当前电压,确定所述USB接口是否接触不良。
结合第二方面或其上述实现方式的任一种,在第二方面的另一种实现方式中,所述方法还包括:所述移动终端接收所述电源适配器发送的第五指令,所述第五指令用于指示所述USB接口接触不良。
第三方面,提供一种电源适配器,所述电源适配器与移动终端通过USB接口相连,所述USB接口中的电源线用于所述电源适配器为所述移动终端充电,所述USB接口中的数据线用于所述电源适配器和所述移动终端进行双向通信,所述电源适配器支持普通充电模式和快速充电模式,其中所述快速充电模式的充电电流大于所述普通充电模式的充电电流,所述电源适配器包括:通信单元,用于通过所述USB接口中的数据线与所述移动终端进行双向通信,以确定使用所述快速充电模式为所述移动终端充电;电流调整单 元,用于将充电电流调整至所述快速充电模式对应的充电电流,为所述移动终端充电。
结合第三方面,在第三方面的一种实现方式中,所述通信单元具体用于向所述移动终端发送第一指令,所述第一指令用于询问所述移动终端是否开启所述快速充电模式;从所述移动终端接收所述第一指令的回复指令,所述第一指令的回复指令用于指示所述移动终端同意开启所述快速充电模式。
结合第三方面或其上述实现方式的任一种,在第三方面的另一种实现方式中,所述电源适配器还包括:功率转换单元,用于与所述移动终端之间通过所述普通充电模式充电;所述通信单元具体用于确定所述普通充电模式的充电时长大于预设阈值后,向所述移动终端发送所述第一指令。
结合第三方面或其上述实现方式的任一种,在第三方面的另一种实现方式中,所述通信单元还用于通过所述USB接口中的数据线与所述移动终端进行双向通信,以确定所述快速充电模式对应的充电电压;所述电源适配器还包括:电压调整单元,用于将充电电压调整至所述快速充电模式对应的充电电压。
结合第三方面或其上述实现方式的任一种,在第三方面的另一种实现方式中,所述通信单元还用于向所述移动终端发送第二指令,所述第二指令用于询问所述电源适配器的当前电压是否适合作为所述快速充电模式的充电电压;接收所述移动终端发送的所述第二指令的回复指令,所述第二指令的回复指令用于指示所述电源适配器的当前电压合适、偏高或偏低;所述电源调整单元具体用于根据所述第二指令的回复指令,确定所述快速充电模式的充电电压。
结合第三方面或其上述实现方式的任一种,在第三方面的另一种实现方式中,所述通信单元具体用于通过所述USB接口中的数据线与所述移动终端进行双向通信,以确定所述快速充电模式对应的充电电流。
结合第三方面或其上述实现方式的任一种,在第三方面的另一种实现方式中,所述通信单元具体用于向所述移动终端发送第三指令,所述第三指令用于询问所述移动终端当前支持的最大充电电流;接收所述移动终端发送的所述第三指令的回复指令,所述第三指令的回复指令用于指示所述移动终端当前支持的最大充电电流;根据所述第三指令的回复指令,确定所述快速充电模式的充电电流。
结合第三方面或其上述实现方式的任一种,在第三方面的另一种实现方式中,所述通信单元还用于在所述电源适配器使用所述快速充电模式为所述移动终端充电的过程中,通过所述USB接口中的数据线与所述移动终端进行双向通信,以不断调整所述电源适配器的充电电流。
结合第三方面或其上述实现方式的任一种,在第三方面的另一种实现方式中,所述通信单元具体用于向所述移动终端发送第四指令,所述第四指令用于询问所述移动终端内的电池的当前电压;接收所述移动终端发送的所述第四指令的回复指令,所述第四指令的回复指令用于指示所述移动终端内的电池的当前电压;所述电流调整单元具体用于根据所述电池的当前电压,调整所述充电电流。
结合第三方面或其上述实现方式的任一种,在第三方面的另一种实现方式中,所述电流调整单元具体用于根据所述电池的当前电压,以及预设的电池电压值和充电电流值的对应关系,将所述电源适配器的充电电流调整至所述电池的当前电压对应的充电电流值。
结合第三方面或其上述实现方式的任一种,在第三方面的另一种实现方式中,所述通信单元还用于在所述电源适配器使用所述快速充电模式为所述移动终端充电的过程中,通过所述USB接口中的数据线与所述移动终端进行双向通信,以确定所述USB接口是否接触不良;当确定所述USB接口接触不良时,退出所述快速充电模式。
结合第三方面或其上述实现方式的任一种,在第三方面的另一种实现方式中,所述通信单元具体用于从所述移动终端接收用于指示所述移动终端的通路阻抗的信息;接收所述移动终端发送的所述第四指令的回复指令,所述第四指令的回复指令用于指示所述移动终端内的电池的电压;根据所述电源适配器的充电电压和所述电池的电压,确定所述电源适配器到所述电池的通路阻抗;根据所述电源适配器到所述电池的通路阻抗、所述移动终端的通路阻抗,以及所述电源适配器和所述移动终端之间的充电线线路的通路阻抗,确定所述USB接口是否接触不良。
结合第三方面或其上述实现方式的任一种,在第三方面的另一种实现方式中,所述通信单元还用于向所述移动终端发送第五指令,所述第五指令用于指示所述USB接口接触不良。
第四方面,提供一种移动终端,所述移动终端与电源适配器通过USB 接口相连,所述USB接口中的电源线用于为所述移动终端充电,所述USB接口中的数据线用于所述移动终端和所述电源适配器进行双向通信,所述移动终端支持普通充电模式和快速充电模式,其中所述快速充电模式的充电电流大于所述普通充电模式的充电电流,所述移动终端包括:通信单元,用于通过所述USB接口中的数据线与所述电源适配器进行双向通信,以便所述电源适配器确定使用所述快速充电模式为所述移动终端充电;充电单元,用于从所述电源适配器接收所述快速充电模式对应的充电电流,为所述移动终端内的电池充电。
结合第四方面,在第四方面的一种实现方式中,所述通信单元具体用于接收所述电源适配器发送的第一指令,所述第一指令用于询问所述移动终端是否开启所述快速充电模式;向所述电源适配器发送所述第一指令的回复指令,所述第一指令的回复指令用于指示所述移动终端同意开启所述快速充电模式。
结合第四方面或其上述实现方式的任一种,在第四方面的另一种实现方式中,所述充电单元还用于与所述电源适配器之间通过所述普通充电模式充电;所述通信单元具体用于所述电源适配器确定所述普通充电模式的充电时长大于预设阈值后,接收所述电源适配器发送的所述第一指令。
结合第四方面或其上述实现方式的任一种,在第四方面的另一种实现方式中,所述通信单元还用于通过所述USB接口中的数据线与所述电源适配器进行双向通信,以便所述电源适配器确定所述快速充电模式对应的充电电压。
结合第四方面或其上述实现方式的任一种,在第四方面的另一种实现方式中,所述通信单元具体用于接收所述电源适配器发送的第二指令,所述第二指令用于询问所述电源适配器的当前电压是否适合作为所述快速充电模式的充电电压;向所述电源适配器发送所述第二指令的回复指令,所述第二指令的回复指令用于指示所述电源适配器的当前电压合适、偏高或偏低。
结合第四方面或其上述实现方式的任一种,在第四方面的另一种实现方式中,所述通信单元还用于通过所述USB接口中的数据线与所述电源适配器进行双向通信,以便所述电源适配器确定所述快速充电模式对应的充电电流。
结合第四方面或其上述实现方式的任一种,在第四方面的另一种实现方 式中,所述通信单元具体用于接收所述电源适配器发送的第三指令,所述第三指令用于询问所述移动终端当前支持的最大充电电流;向所述电源适配器发送所述第三指令的回复指令,所述第三指令的回复指令用于指示所述移动终端当前支持的最大充电电流,以便所述电源适配器根据所述最大充电电流确定所述快速充电模式对应的充电电流。
结合第四方面或其上述实现方式的任一种,在第四方面的另一种实现方式中,所述通信单元还用于在所述电源适配器使用所述快速充电模式为所述移动终端充电的过程中,通过所述USB接口中的数据线与所述电源适配器进行双向通信,以便所述电源适配器不断调整所述电源适配器的充电电流。
结合第四方面或其上述实现方式的任一种,在第四方面的另一种实现方式中,所述通信单元具体用于接收所述电源适配器发送的第四指令,所述第四指令用于询问所述移动终端内的电池的当前电压;向所述电源适配器发送所述第四指令的回复指令,所述第四指令的回复指令用于指示所述移动终端内的电池的当前电压,以便所述电源适配器根据所述电池的当前电压,不断调整所述电源适配器的充电电流。
结合第四方面或其上述实现方式的任一种,在第四方面的另一种实现方式中,所述通信单元还用于在所述电源适配器使用所述快速充电模式为所述移动终端充电的过程中,通过所述USB接口中的数据线与所述电源适配器进行双向通信,以便所述电源适配器确定所述USB接口是否接触不良。
结合第四方面或其上述实现方式的任一种,在第四方面的另一种实现方式中,所述通信单元具体用于接收所述电源适配器发送的第四指令,所述第四指令用于询问所述移动终端内的电池的当前电压;向所述电源适配器发送所述第四指令的回复指令,所述第四指令的回复指令用于指示所述移动终端内的电池的当前电压,以便所述电源适配器根据所述充电适配器的充电电压和所述电池的当前电压,确定所述USB接口是否接触不良。
结合第四方面或其上述实现方式的任一种,在第四方面的另一种实现方式中,其特征在于,所述通信单元还用于接收所述电源适配器发送的第五指令,所述第五指令用于指示所述USB接口接触不良。
第五方面,提供一种快速充电方法,所述方法应用于电源适配器,所述电源适配器与移动终端通过通用串行总线USB接口相连,所述USB接口中的电源线用于所述电源适配器为所述移动终端充电,所述USB接口中的数 据线用于所述电源适配器和所述移动终端进行双向通信,所述电源适配器支持普通充电模式和快速充电模式,其中所述快速充电模式的充电电流大于所述普通充电模式的充电电流,所述方法包括:所述电源适配器确定开启所述快速充电模式;所述电源适配器通过第二指令与所述移动终端进行握手通信,以确定所述快速充电模式对应的充电电压;所述电源适配器通过第三指令与所述移动终端进行握手通信,以确定所述快速充电模式对应的充电电流;所述电源适配器将输出电压和输出电流调整至所述快速充电模式对应的充电电压和充电电流,进入恒流阶段;在所述恒流阶段,所述电源适配器通过第四指令与所述移动终端进行握手通信,以调整所述电源适配器的输出电流,从而以分段恒流的形式为所述移动终端充电。
结合第五方面,在第五方面的一种实现方式中,所述电源适配器确定开启所述快速充电模式,包括:所述电源适配器通过第一指令与所述移动终端进行握手通信,以确定开启所述快速充电模式。
结合第五方面或其上述实现方式的任一种,在第五方面的另一种实现方式中,所述电源适配器通过第一指令与所述移动终端进行握手通信,以确定开启所述快速充电模式,包括:所述电源适配器向所述移动终端发送所述第一指令,所述第一指令用于询问所述移动终端是否开启所述快速充电模式;所述电源适配器从所述移动终端接收所述第一指令的回复指令;当所述第一指令的回复指令指示所述移动终端同意开启所述快速充电模式时,所述电源适配器确定开启所述快速充电模式。
结合第五方面或其上述实现方式的任一种,在第五方面的另一种实现方式中,所述第一指令的回复指令包括用于指示所述移动终端通路阻抗的阻抗信息,所述阻抗信息用于所述电源适配器在所述恒流阶段确定所述USB接口是否接触不良。
结合第五方面或其上述实现方式的任一种,在第五方面的另一种实现方式中,所述方法还包括:在与所述移动终端连接的过程中,当所述电源适配器检测到所述电源适配器为所述移动终端提供的充电电流在预设的时长内大于或等于预设的电流阈值时,所述电源适配器确认所述移动终端已经完成所述电源适配器的类型的识别;所述电源适配器向所述移动终端发送所述第一指令,包括:在所述电源适配器确认所述移动终端已经识别完所述电源适配器的类型之后,所述电源适配器向所述移动终端发送所述第一指令。
结合第五方面或其上述实现方式的任一种,在第五方面的另一种实现方式中,所述方法还包括:当所述第一指令的回复指令指示所述移动终端不同意开启所述快速充电模式时,所述电源适配器重复执行上述充电电流的检测过程和第一指令的握手通信过程,直到所述移动终端同意开启所述快速充电模式或所述充电电流小于所述电流阈值。
结合第五方面或其上述实现方式的任一种,在第五方面的另一种实现方式中,所述电源适配器确定开启所述快速充电模式,包括:所述电源适配器从所述移动终端接收询问消息,所述询问消息用于询问所述电源适配器是否支持所述快速充电模式;所述电源适配器向所述移动终端发送应答消息,所述应答消息用于指示所述电源适配器支持所述快速充电模式;所述电源适配器从所述移动终端接收指示消息,所述指示消息用于指示所述电源适配器开启所述快速充电模式。
结合第五方面或其上述实现方式的任一种,在第五方面的另一种实现方式中,所述电源适配器通过第二指令与所述移动终端进行握手通信,以确定所述快速充电模式对应的充电电压,包括:所述电源适配器向所述移动终端发送所述第二指令,所述第二指令用于询问所述电源适配器的当前输出电压是否适合作为所述快速充电模式的充电电压;所述电源适配器接收所述移动终端发送的所述第二指令的回复指令,所述第二指令的回复指令用于指示所述电源适配器的当前输出电压合适、偏高或偏低;当所述第二指令的回复指令指示所述电源适配器的当前输出电压合适时,所述电源适配器将所述电源适配器的当前输出电压确定为所述快速充电模式对应的充电电压;当所述第二指令的回复指令指示所述电源适配器的当前输出电压偏高或偏低时,所述电源适配器根据所述第二指令的回复指令,调整所述电源适配器的当前输出电压,重复执行上述基于第二指令的握手通信过程,不断调整所述电源适配器的当前输出电压,直到所述第二指令的回复指令指示所述电源适配器的当前输出电压合适为止。
结合第五方面或其上述实现方式的任一种,在第五方面的另一种实现方式中,所述方法还包括:所述电源适配器确定基于所述第二指令的握手通信过程的时间长度;当所述时间长度大于预设的时间长度阈值时,所述电源适配器确认所述第二指令的握手通信的过程异常,退出所述快速充电模式的握手通信过程,或重新确定是否开始快速充电模式。
结合第五方面或其上述实现方式的任一种,在第五方面的另一种实现方式中,所述电源适配器通过第三指令与所述移动终端进行握手通信,以确定所述快速充电模式对应的充电电流,包括:所述电源适配器向所述移动终端发送所述第三指令,所述第三指令用于询问所述移动终端当前支持的最大充电电流;所述电源适配器接收所述移动终端发送的所述第三指令的回复指令,所述第三指令的回复指令用于指示所述移动终端当前支持的最大充电电流;所述电源适配器根据所述第三指令的回复指令,确定所述快速充电模式的充电电流。
结合第五方面或其上述实现方式的任一种,在第五方面的另一种实现方式中,所述电源适配器将输出电流调整至所述快速充电模式对应的充电电流,包括:所述电源适配器通过控制电流调整速度,将输出电流调整至所述快速充电模式对应的充电电流,其中,所述电流调整速度位于预设的电流速度调整范围内。
结合第五方面或其上述实现方式的任一种,在第五方面的另一种实现方式中,所述在所述恒流阶段,所述电源适配器通过第四指令与所述移动终端进行握手通信,以调整所述电源适配器的输出电流,包括:在所述恒流阶段,所述电源适配器向所述移动终端发送第四指令,所述第四指令用于询问所述移动终端内的电池的当前电压;所述电源适配器接收所述移动终端发送的所述第四指令的回复指令,所述第四指令的回复指令用于指示所述移动终端内的电池的当前电压;所述电源适配器根据所述电池的当前电压,调整所述电源适配器的输出电流。
结合第五方面或其上述实现方式的任一种,在第五方面的另一种实现方式中,所述在所述恒流阶段,所述电源适配器向所述移动终端发送第四指令,所述第四指令用于询问所述移动终端内的电池的当前电压,包括:在所述恒流阶段,所述电源适配器每隔一段预设的时间间隔,向所述移动终端发送一次所述第四指令。
结合第五方面或其上述实现方式的任一种,在第五方面的另一种实现方式中,在所述恒流阶段,在电源适配器的输出电流的每次调整过程中,所述电源适配器的输出电流的调整幅度小于或等于所述电源适配器的当前输出电流的5%。
结合第五方面或其上述实现方式的任一种,在第五方面的另一种实现方 式中,所述方法还包括:所述电源适配器从所述移动终端接收用于指示所述移动终端的通路阻抗的阻抗信息;在所述恒流阶段,所述电源适配器根据所述电源适配器的当前输出电压和所述电池的当前电压,确定所述电源适配器到所述电池的充电回路阻抗;所述电源适配器根据所述充电回路阻抗、所述移动终端的通路阻抗,以及所述电源适配器和所述移动终端之间的充电线线路的通路阻抗,确定所述USB接口是否接触不良;当所述USB接口接触不良时,所述电源适配器退出所述快速充电模式或重新确定是否开启所述快速充电模式。
结合第五方面或其上述实现方式的任一种,在第五方面的另一种实现方式中,所述方法还包括:当所述USB接口接触不良时,所述电源适配器向所述移动终端发送第五指令,所述第五指令用于指示所述USB接口接触不良,所述电源适配器准备退出快速充电模式或重新确定是否开启所述快速充电模式。
结合第五方面或其上述实现方式的任一种,在第五方面的另一种实现方式中,在所述恒流阶段,所述电源适配器和所述移动终端的通信时间间隔小于预设的时间间隔阈值,否则退出所述快速充电模式或重新确定是否开启所述快速充电模式。
结合第五方面或其上述实现方式的任一种,在第五方面的另一种实现方式中,所述快速充电模式的停止包括两种停止模式:可恢复的停止模式和不可恢复的停止模式,在所述可恢复的停止模式中,所述电源适配器或所述移动终端重新开启所述快速充电模式,与所述移动终端重新进行握手通信;在所述不可恢复的停止模式中,所述电源适配器或所述移动终端不再开启所述快速充电模式,使用所述普通充电模式为所述移动终端充电,或不再为所述移动终端充电。
结合第五方面或其上述实现方式的任一种,在第五方面的另一种实现方式中,所述可恢复的停止模式适用于的情况包括:所述电源适配器和所述移动终端之间出现通信异常或所述移动终端的电池出现异常,所述快速充电模式停止,所述电源适配器重新询问所述移动终端是否同意开启所述快速充电模式,所述移动终端同意重新开启所述快速充电模式;或者,所述不可恢复的停止模式适用的情况包括:所述移动终端的电池充满或所述USB接口接触不良,所述电源适配器重新询问所述移动终端是否开启所述快速充电模 式,所述移动终端不同意开启所述快速充电模式。
结合第五方面或其上述实现方式的任一种,在第五方面的另一种实现方式中,所述方法还包括:所述电源适配器确定连接所述电源适配器和所述移动终端的USB接口的数据线是否为支持所述快速充电模式的数据线。
结合第五方面或其上述实现方式的任一种,在第五方面的另一种实现方式中,在所述电源适配器和所述移动终端握手通信的任意过程中,当出现通信异常时,停止所述快速充电模式。
结合第五方面或其上述实现方式的任一种,在第五方面的另一种实现方式中,在所述电源适配器与所述移动终端通信的过程中,所述电源适配器作为主机,提供用于所述电源适配器和所述移动终端同步的时钟信号。
结合第五方面或其上述实现方式的任一种,在第五方面的另一种实现方式中,所述电源适配器通过所述USB接口中的D+数据线提供所述时钟信号,所述电源适配器与所述移动终端通过所述USB接口中的D-数据线进行通信和/或传输数据。
结合第五方面或其上述实现方式的任一种,在第五方面的另一种实现方式中,所述电源适配器和所述移动终端之间的通信和/或充电过程是基于开环电流分段恒流VOOC闪充技术或VOOC闪充通信协议进行的。
第十方面,提供一种快速充电方法,所述方法应用于移动终端,所述移动终端与电源适配器通过通用串行总线USB接口相连,所述USB接口中的电源线用于为所述移动终端充电,所述USB接口中的数据线用于所述移动终端和所述电源适配器进行双向通信,所述移动终端支持普通充电模式和快速充电模式,其中所述快速充电模式的充电电流大于所述普通充电模式的充电电流,所述方法包括:所述移动终端确定开启所述快速充电模式;所述移动终端通过所述电源适配器发送的第二指令与所述电源适配器进行握手通信,以确定所述快速充电模式对应的充电电压;所述移动终端通过所述电源适配器发送的第三指令与所述电源适配器进行握手通信,以确定所述快速充电模式对应的充电电流;在所述电源适配器将输出电压和输出电流调整至所述快速充电模式对应的充电电压和充电电流,进入恒流阶段之后,所述移动终端通过所述电源适配器发送的第四指令与所述电源适配器进行握手通信,以便所述电源适配器调整输出电流,以分段恒流的形式为所述移动终端充电。
结合第十方面,在第十方面的一种实现方式中,所述移动终端确定开启所述快速充电模式,包括:所述移动终端通过所述电源适配器发送的第一指令与所述移动终端进行握手通信,以确定开启所述快速充电模式。
结合第十方面或其上述实现方式的任一种,在第十方面的另一种实现方式中,所述移动终端通过所述电源适配器发送的第一指令与所述移动终端进行握手通信,以确定开启所述快速充电模式,包括:所述移动终端从所述电源适配器接收所述第一指令,所述第一指令用于询问所述移动终端是否开启所述快速充电模式;所述移动终端向所述电源适配器发送所述第一指令的回复指令,所述第一指令的回复指令用于指示所述移动终端同意开启所述快速充电模式。
结合第十方面或其上述实现方式的任一种,在第十方面的另一种实现方式中,所述第一指令的回复指令包括用于指示所述移动终端通路阻抗的阻抗信息,所述阻抗信息用于所述电源适配器在所述恒流阶段确定所述USB接口是否接触不良。
结合第十方面或其上述实现方式的任一种,在第十方面的另一种实现方式中,所述方法还包括:在与所述电源适配器连接的过程中,所述移动终端通过所述USB接口中的D+数据线和D-数据线检测所述电源适配器的类型;所述移动终端从所述电源适配器接收充电电流,所述充电电流大于预设的电流阈值;所述移动终端从所述电源适配器接收所述第一指令,包括:在所述电源适配器检测到所述电源适配器为所述移动终端提供的充电电流在预设的时长内大于或等于所述电流阈值后,所述移动终端从所述电源适配器接收所述第一指令。
结合第十方面或其上述实现方式的任一种,在第十方面的另一种实现方式中,所述移动终端确定开启所述快速充电模式,包括:所述移动终端向所述电源适配器发送询问消息,所述询问消息用于询问所述电源适配器是否支持所述快速充电模式;所述移动终端从所述电源适配器接收应答消息,所述应答消息用于指示所述电源适配器支持所述快速充电模式;所述移动终端向所述电源适配器发送指示消息,所述指示消息用于指示所述电源适配器开启所述快速充电模式。
结合第十方面或其上述实现方式的任一种,在第十方面的另一种实现方式中,所述移动终端通过所述电源适配器发送的第二指令与所述电源适配器 进行握手通信,以确定所述快速充电模式对应的充电电压,包括:所述移动终端从所述电源适配器接收所述第二指令,所述第二指令用于询问所述电源适配器的当前输出电压是否适合作为所述快速充电模式的充电电压;所述移动终端向所述电源适配器发送所述第二指令的回复指令,所述第二指令的回复指令用于指示所述电源适配器的当前输出电压合适、偏高或偏低,以便所述电源适配器根据所述第二指令的回复指令确定所述快速充电模式对应的充电电压。
结合第十方面或其上述实现方式的任一种,在第十方面的另一种实现方式中,所述移动终端向所述电源适配器发送所述第二指令的回复指令,包括:当所述移动终端确定所述电源适配器的当前输出电压高于所述移动终端的电池电压,且所述电源适配器的当前输出电压与所述电池电压的压差在预设的压差阈值范围内时,所述移动终端向所述电源适配器发送所述第二指令的回复指令,所述第二指令的回复指令用于指示所述电源适配器的当前输出电压合适。
结合第十方面或其上述实现方式的任一种,在第十方面的另一种实现方式中,所述压差阈值在200mV至500mV的范围内。
结合第十方面或其上述实现方式的任一种,在第十方面的另一种实现方式中,所述方法还包括:所述移动终端确定基于所述第二指令的握手通信过程的时间长度;当所述时间长度大于预设的时间长度阈值时,所述移动终端确认所述第二指令的握手通信的过程异常,退出所述快速充电模式的握手通信过程,或重新确定是否开始快速充电模式。
结合第十方面或其上述实现方式的任一种,在第十方面的另一种实现方式中,所述移动终端通过所述电源适配器发送的第三指令与所述电源适配器进行握手通信,以确定所述快速充电模式对应的充电电流,包括:所述移动终端从所述电源适配器接收所述第三指令,所述第三指令用于询问所述移动终端当前支持的最大充电电流;所述移动终端向所述电源适配器发送第三指令的回复指令,所述第三指令的回复指令用于指示所述移动终端当前支持的最大充电电流,以便所述电源适配器根据所述第三指令的回复指令,确定所述快速充电模式对应的充电电流。
结合第十方面或其上述实现方式的任一种,在第十方面的另一种实现方式中,所述移动终端通过所述电源适配器发送的第四指令与所述电源适配器 进行握手通信,以便所述电源适配器调整输出电流,包括:在所述恒流阶段,所述移动终端从所述电源适配器接收第四指令,所述第四指令用于询问所述移动终端内的电池的当前电压;所述移动终端向所述电源适配器发送所述第四指令的回复指令,所述第四指令的回复指令用于指示所述移动终端内的电池的当前电压,以便所述电源适配器根据所述电池的当前电压,调整所述电源适配器的输出电流。
结合第十方面或其上述实现方式的任一种,在第十方面的另一种实现方式中,所述在所述恒流阶段,所述移动终端从所述电源适配器接收第四指令,所述第四指令用于询问所述移动终端内的电池的当前电压,包括:在所述恒流阶段,所述移动终端每隔一段预设的时间间隔,从所述电源适配器接收一次所述第四指令。
结合第十方面或其上述实现方式的任一种,在第十方面的另一种实现方式中,在所述恒流阶段,在电源适配器的输出电流的每次调整过程中,所述电源适配器的输出电流的调整幅度小于或等于所述电源适配器的当前输出电流的5%。
结合第十方面或其上述实现方式的任一种,在第十方面的另一种实现方式中,所述方法还包括:所述移动终端向所述电源适配器发送用于指示所述移动终端的通路阻抗的信息,以便所述电源适配器在所述恒流阶段根据所述通路阻抗确定所述USB接口是否接触不良;当所述电源适配器确定所述USB接口接触不良时,所述移动终端从所述电源适配器接收第五指令,所述第五指令用于指示所述USB接口接触不良,所述电源适配器准备退出快速充电模式或重新确定是否开启所述快速充电模式。
结合第十方面或其上述实现方式的任一种,在第十方面的另一种实现方式中,在所述恒流阶段,所述电源适配器和所述移动终端的通信时间间隔小于预设的时间间隔阈值,否则退出所述快速充电模式或重新开启所述快速充电模式。
结合第十方面或其上述实现方式的任一种,在第十方面的另一种实现方式中,所述快速充电模式的停止包括两种停止模式:可恢复的停止模式和不可恢复的停止模式,在所述可恢复的停止模式中,所述电源适配器或所述移动终端重新开启所述快速充电模式,与所述移动终端重新进行握手通信;在所述不可恢复的停止模式中,所述电源适配器或所述移动终端不再开启所述 快速充电模式,使用所述普通充电模式为所述移动终端充电,或不再为所述移动终端充电。
结合第十方面或其上述实现方式的任一种,在第十方面的另一种实现方式中,所述可恢复的停止模式适用于的情况包括:所述电源适配器和所述移动终端之间出现通信异常或所述移动终端的电池出现异常,所述快速充电模式停止,所述电源适配器重新询问所述移动终端是否同意开启所述快速充电模式,所述移动终端同意重新开启所述快速充电模式;或者,所述不可恢复的停止模式适用的情况包括:所述移动终端的电池充满或所述USB接口接触不良,所述电源适配器重新询问所述移动终端是否开启所述快速充电模式,所述移动终端不同意开启所述快速充电模式。
结合第十方面或其上述实现方式的任一种,在第十方面的另一种实现方式中,所述方法还包括:所述移动终端确定连接所述电源适配器和所述移动终端的USB接口的数据线是否为支持所述快速充电模式的数据线。
结合第十方面或其上述实现方式的任一种,在第十方面的另一种实现方式中,在所述电源适配器和所述移动终端握手通信的任意过程中,当出现通信异常时,停止所述快速充电模式。
结合第十方面或其上述实现方式的任一种,在第十方面的另一种实现方式中,在所述电源适配器与所述移动终端通信的过程中,所述电源适配器作为主机,提供用于所述电源适配器和所述移动终端同步的时钟信号。
结合第十方面或其上述实现方式的任一种,在第十方面的另一种实现方式中,所述电源适配器通过所述USB接口中的D+数据线提供所述时钟信号,所述电源适配器与所述移动终端通过所述USB接口中的D-数据线进行通信和/或传输数据。
结合第十方面或其上述实现方式的任一种,在第十方面的另一种实现方式中,所述电源适配器和所述移动终端之间的通信和/或充电过程是基于开环电流分段恒流VOOC闪充技术或VOOC闪充通信协议进行的。
第七方面,提供一种电源适配器,所述电源适配器与移动终端通过通用串行总线USB接口相连,所述USB接口中的电源线用于所述电源适配器为所述移动终端充电,所述USB接口中的数据线用于所述电源适配器和所述移动终端进行双向通信,所述电源适配器支持普通充电模式和快速充电模式,其中所述快速充电模式的充电电流大于所述普通充电模式的充电电流, 所述电源适配器包括:通信控制电路和充电电路,所述通信控制电路用于确定开启所述快速充电模式;通过第二指令与所述移动终端进行握手通信,以确定所述快速充电模式对应的充电电压;通过第三指令与所述移动终端进行握手通信,以确定所述快速充电模式对应的充电电流;将输出电压和输出电流调整至所述快速充电模式对应的充电电压和充电电流,进入恒流阶段;在所述恒流阶段,通过第四指令与所述移动终端进行握手通信,以调整所述电源适配器的输出电流,从而通过所述充电电路以分段恒流的形式为所述移动终端充电。
结合第七方面,在第七方面的一种实现方式中,所述通信控制电路具体用于通过第一指令与所述移动终端进行握手通信,以确定开启所述快速充电模式。
结合第七方面或其上述实现方式的任一种,在第七方面的另一种实现方式中,所述通信控制电路具体用于所述电源适配器向所述移动终端发送所述第一指令,所述第一指令用于询问所述移动终端是否开启所述快速充电模式;从所述移动终端接收所述第一指令的回复指令;当所述第一指令的回复指令指示所述移动终端同意开启所述快速充电模式时,确定开启所述快速充电模式。
结合第七方面或其上述实现方式的任一种,在第七方面的另一种实现方式中,所述第一指令的回复指令包括用于指示所述移动终端通路阻抗的阻抗信息,所述阻抗信息用于所述电源适配器在所述恒流阶段确定所述USB接口是否接触不良。
结合第七方面或其上述实现方式的任一种,在第七方面的另一种实现方式中,所述通信控制电路还用于在与所述移动终端连接的过程中,当所述电源适配器检测到所述电源适配器为所述移动终端提供的充电电流在预设的时长内大于或等于预设的电流阈值时,确认所述移动终端已经完成所述电源适配器的类型的识别;在所述电源适配器确认所述移动终端已经识别完所述电源适配器的类型之后,所述电源适配器向所述移动终端发送所述第一指令。
结合第七方面或其上述实现方式的任一种,在第七方面的另一种实现方式中,所述通信控制电路还用于当所述第一指令的回复指令指示所述移动终端不同意开启所述快速充电模式时,所述电源适配器重复执行上述充电电流 的检测过程和第一指令的握手通信过程,直到所述移动终端同意开启所述快速充电模式或所述充电电流小于所述电流阈值。
结合第七方面或其上述实现方式的任一种,在第七方面的另一种实现方式中,所述通信控制电路具体用于从所述移动终端接收询问消息,所述询问消息用于询问所述电源适配器是否支持所述快速充电模式;向所述移动终端发送应答消息,所述应答消息用于指示所述电源适配器支持所述快速充电模式;从所述移动终端接收指示消息,所述指示消息用于指示所述电源适配器开启所述快速充电模式。
结合第七方面或其上述实现方式的任一种,在第七方面的另一种实现方式中,所述通信控制电路具体用于向所述移动终端发送所述第二指令,所述第二指令用于询问所述电源适配器的当前输出电压是否适合作为所述快速充电模式的充电电压;接收所述移动终端发送的所述第二指令的回复指令,所述第二指令的回复指令用于指示所述电源适配器的当前输出电压合适、偏高或偏低;当所述第二指令的回复指令指示所述电源适配器的当前输出电压合适时,将所述电源适配器的当前输出电压确定为所述快速充电模式对应的充电电压;当所述第二指令的回复指令指示所述电源适配器的当前输出电压偏高或偏低时,根据所述第二指令的回复指令,调整所述电源适配器的当前输出电压,重复执行上述基于第二指令的握手通信过程,不断调整所述电源适配器的当前输出电压,直到所述第二指令的回复指令指示所述电源适配器的当前输出电压合适为止。
结合第七方面或其上述实现方式的任一种,在第七方面的另一种实现方式中,所述通信控制电路还用于确定基于所述第二指令的握手通信过程的时间长度;当所述时间长度大于预设的时间长度阈值时,确认所述第二指令的握手通信的过程异常,退出所述快速充电模式的握手通信过程,或重新确定是否开始快速充电模式。
结合第七方面或其上述实现方式的任一种,在第七方面的另一种实现方式中,所述通信控制电路具体用于向所述移动终端发送所述第三指令,所述第三指令用于询问所述移动终端当前支持的最大充电电流;接收所述移动终端发送的所述第三指令的回复指令,所述第三指令的回复指令用于指示所述移动终端当前支持的最大充电电流;根据所述第三指令的回复指令,确定所述快速充电模式的充电电流。
结合第七方面或其上述实现方式的任一种,在第七方面的另一种实现方式中,所述通信控制电路具体用于通过控制电流调整速度,将输出电流调整至所述快速充电模式对应的充电电流,其中,所述电流调整速度位于预设的电流速度调整范围内。
结合第七方面或其上述实现方式的任一种,在第七方面的另一种实现方式中,所述通信控制电路具体用于在所述恒流阶段,所述电源适配器向所述移动终端发送第四指令,所述第四指令用于询问所述移动终端内的电池的当前电压;接收所述移动终端发送的所述第四指令的回复指令,所述第四指令的回复指令用于指示所述移动终端内的电池的当前电压;根据所述电池的当前电压,调整所述电源适配器的输出电流。
结合第七方面或其上述实现方式的任一种,在第七方面的另一种实现方式中,所述通信控制电路具体用于在所述恒流阶段,每隔一段预设的时间间隔,向所述移动终端发送一次所述第四指令。
结合第七方面或其上述实现方式的任一种,在第七方面的另一种实现方式中,在所述恒流阶段,在电源适配器的输出电流的每次调整过程中,所述电源适配器的输出电流的调整幅度小于或等于所述电源适配器的当前输出电流的5%。
结合第七方面或其上述实现方式的任一种,在第七方面的另一种实现方式中,所述通信控制电路还用于从所述移动终端接收用于指示所述移动终端的通路阻抗的阻抗信息;在所述恒流阶段,根据所述电源适配器的当前输出电压和所述电池的当前电压,确定所述电源适配器到所述电池的充电回路阻抗;根据所述充电回路阻抗、所述移动终端的通路阻抗,以及所述电源适配器和所述移动终端之间的充电线线路的通路阻抗,确定所述USB接口是否接触不良;当所述USB接口接触不良时,退出所述快速充电模式或重新确定是否开启所述快速充电模式。
结合第七方面或其上述实现方式的任一种,在第七方面的另一种实现方式中,所述通信控制电路还用于当所述USB接口接触不良时,向所述移动终端发送第五指令,所述第五指令用于指示所述USB接口接触不良,所述电源适配器准备退出快速充电模式或重新确定是否开启所述快速充电模式。
结合第七方面或其上述实现方式的任一种,在第七方面的另一种实现方式中,在所述恒流阶段,所述电源适配器和所述移动终端的通信时间间隔小 于预设的时间间隔阈值,否则退出所述快速充电模式或重新确定是否开启所述快速充电模式。
结合第七方面或其上述实现方式的任一种,在第七方面的另一种实现方式中,所述快速充电模式的停止包括两种停止模式:可恢复的停止模式和不可恢复的停止模式,在所述可恢复的停止模式中,所述电源适配器或所述移动终端重新开启所述快速充电模式,与所述移动终端重新进行握手通信;在所述不可恢复的停止模式中,所述电源适配器或所述移动终端不再开启所述快速充电模式,使用所述普通充电模式为所述移动终端充电,或不再为所述移动终端充电。
结合第七方面或其上述实现方式的任一种,在第七方面的另一种实现方式中,所述可恢复的停止模式适用于的情况包括:所述电源适配器和所述移动终端之间出现通信异常或所述移动终端的电池出现异常,所述快速充电模式停止,所述电源适配器重新询问所述移动终端是否同意开启所述快速充电模式,所述移动终端同意重新开启所述快速充电模式;或者,所述不可恢复的停止模式适用的情况包括:所述移动终端的电池充满或所述USB接口接触不良,所述电源适配器重新询问所述移动终端是否开启所述快速充电模式,所述移动终端不同意开启所述快速充电模式。
结合第七方面或其上述实现方式的任一种,在第七方面的另一种实现方式中,所述通信控制电路还用于确定连接所述电源适配器和所述移动终端的USB接口的数据线是否为支持所述快速充电模式的数据线。
结合第七方面或其上述实现方式的任一种,在第七方面的另一种实现方式中,在所述电源适配器和所述移动终端握手通信的任意过程中,当出现通信异常时,停止所述快速充电模式。
结合第七方面或其上述实现方式的任一种,在第七方面的另一种实现方式中,在所述电源适配器与所述移动终端通信的过程中,所述电源适配器作为主机,提供用于所述电源适配器和所述移动终端同步的时钟信号。
结合第七方面或其上述实现方式的任一种,在第七方面的另一种实现方式中,所述电源适配器通过所述USB接口中的D+数据线提供所述时钟信号,所述电源适配器与所述移动终端通过所述USB接口中的D-数据线进行通信和/或传输数据。
结合第七方面或其上述实现方式的任一种,在第七方面的另一种实现方 式中,所述电源适配器和所述移动终端之间的通信和/或充电过程是基于开环电流分段恒流VOOC闪充技术或VOOC闪充通信协议进行的。
第八方面,提供一种移动终端,所述移动终端与电源适配器通过通用串行总线USB接口相连,所述USB接口中的电源线用于为所述移动终端充电,所述USB接口中的数据线用于所述移动终端和所述电源适配器进行双向通信,所述移动终端支持普通充电模式和快速充电模式,其中所述快速充电模式的充电电流大于所述普通充电模式的充电电流,所述移动终端包括:通信控制电路和充电电路,所述通信控制电路用于确定开启所述快速充电模式;通过所述电源适配器发送的第二指令与所述电源适配器进行握手通信,以确定所述快速充电模式对应的充电电压;通过所述电源适配器发送的第三指令与所述电源适配器进行握手通信,以确定所述快速充电模式对应的充电电流;在所述电源适配器将输出电压和输出电流调整至所述快速充电模式对应的充电电压和充电电流,进入恒流阶段之后,通过所述电源适配器发送的第四指令与所述电源适配器进行握手通信,以便所述电源适配器调整输出电流,以分段恒流的形式通过所述充电电路为所述移动终端充电。
结合第八方面,在第八方面的一种实现方式中,所述通信控制电路具体用于通过所述电源适配器发送的第一指令与所述移动终端进行握手通信,以确定开启所述快速充电模式。
结合第八方面或其上述实现方式的任一种,在第八方面的另一种实现方式中,所述通信控制电路具体用于从所述电源适配器接收所述第一指令,所述第一指令用于询问所述移动终端是否开启所述快速充电模式;向所述电源适配器发送所述第一指令的回复指令,所述第一指令的回复指令用于指示所述移动终端同意开启所述快速充电模式。
结合第八方面或其上述实现方式的任一种,在第八方面的另一种实现方式中,所述第一指令的回复指令包括用于指示所述移动终端通路阻抗的阻抗信息,所述阻抗信息用于所述电源适配器在所述恒流阶段确定所述USB接口是否接触不良。
结合第八方面或其上述实现方式的任一种,在第八方面的另一种实现方式中,所述通信控制电路还用于在与所述电源适配器连接的过程中,通过所述USB接口中的D+数据线和D-数据线检测所述电源适配器的类型;从所述电源适配器接收充电电流,所述充电电流大于预设的电流阈值;所述通信控 制电路具体用于在所述电源适配器检测到所述电源适配器为所述移动终端提供的充电电流在预设的时长内大于或等于所述电流阈值后,从所述电源适配器接收所述第一指令。
结合第八方面或其上述实现方式的任一种,在第八方面的另一种实现方式中,所述通信控制电路具体用于向所述电源适配器发送询问消息,所述询问消息用于询问所述电源适配器是否支持所述快速充电模式;从所述电源适配器接收应答消息,所述应答消息用于指示所述电源适配器支持所述快速充电模式;向所述电源适配器发送指示消息,所述指示消息用于指示所述电源适配器开启所述快速充电模式。
结合第八方面或其上述实现方式的任一种,在第八方面的另一种实现方式中,所述通信控制电路具体用于从所述电源适配器接收所述第二指令,所述第二指令用于询问所述电源适配器的当前输出电压是否适合作为所述快速充电模式的充电电压;向所述电源适配器发送所述第二指令的回复指令,所述第二指令的回复指令用于指示所述电源适配器的当前输出电压合适、偏高或偏低,以便所述电源适配器根据所述第二指令的回复指令确定所述快速充电模式对应的充电电压。
结合第八方面或其上述实现方式的任一种,在第八方面的另一种实现方式中,所述通信控制电路具体用于当所述移动终端确定所述电源适配器的当前输出电压高于所述移动终端的电池电压,且所述电源适配器的当前输出电压与所述电池电压的压差在预设的压差阈值范围内时,向所述电源适配器发送所述第二指令的回复指令,所述第二指令的回复指令用于指示所述电源适配器的当前输出电压合适。
结合第八方面或其上述实现方式的任一种,在第八方面的另一种实现方式中,所述压差阈值在200mV至500mV的范围内。
结合第八方面或其上述实现方式的任一种,在第八方面的另一种实现方式中,所述通信控制电路还用于确定基于所述第二指令的握手通信过程的时间长度;当所述时间长度大于预设的时间长度阈值时,确认所述第二指令的握手通信的过程异常,退出所述快速充电模式的握手通信过程,或重新确定是否开始快速充电模式。
结合第八方面或其上述实现方式的任一种,在第八方面的另一种实现方式中,所述通信控制电路具体用于从所述电源适配器接收所述第三指令,所 述第三指令用于询问所述移动终端当前支持的最大充电电流;向所述电源适配器发送第三指令的回复指令,所述第三指令的回复指令用于指示所述移动终端当前支持的最大充电电流,以便所述电源适配器根据所述第三指令的回复指令,确定所述快速充电模式对应的充电电流。
结合第八方面或其上述实现方式的任一种,在第八方面的另一种实现方式中,所述通信控制电路具体用于在所述恒流阶段,所述移动终端从所述电源适配器接收第四指令,所述第四指令用于询问所述移动终端内的电池的当前电压;向所述电源适配器发送所述第四指令的回复指令,所述第四指令的回复指令用于指示所述移动终端内的电池的当前电压,以便所述电源适配器根据所述电池的当前电压,调整所述电源适配器的输出电流。
结合第八方面或其上述实现方式的任一种,在第八方面的另一种实现方式中,所述通信控制电路用于在所述恒流阶段,每隔一段预设的时间间隔,从所述电源适配器接收一次所述第四指令。
结合第八方面或其上述实现方式的任一种,在第八方面的另一种实现方式中,在所述恒流阶段,在电源适配器的输出电流的每次调整过程中,所述电源适配器的输出电流的调整幅度小于或等于所述电源适配器的当前输出电流的5%。
结合第八方面或其上述实现方式的任一种,在第八方面的另一种实现方式中,所述通信控制电路还用于向所述电源适配器发送用于指示所述移动终端的通路阻抗的信息,以便所述电源适配器在所述恒流阶段根据所述通路阻抗确定所述USB接口是否接触不良;当所述电源适配器确定所述USB接口接触不良时,从所述电源适配器接收第五指令,所述第五指令用于指示所述USB接口接触不良,所述电源适配器准备退出快速充电模式或重新确定是否开启所述快速充电模式。
结合第八方面或其上述实现方式的任一种,在第八方面的另一种实现方式中,在所述恒流阶段,所述电源适配器和所述移动终端的通信时间间隔小于预设的时间间隔阈值,否则退出所述快速充电模式或重新开启所述快速充电模式。
结合第八方面或其上述实现方式的任一种,在第八方面的另一种实现方式中,所述快速充电模式的停止包括两种停止模式:可恢复的停止模式和不可恢复的停止模式,在所述可恢复的停止模式中,所述电源适配器或所述移 动终端重新开启所述快速充电模式,与所述移动终端重新进行握手通信;在所述不可恢复的停止模式中,所述电源适配器或所述移动终端不再开启所述快速充电模式,使用所述普通充电模式为所述移动终端充电,或不再为所述移动终端充电。
结合第八方面或其上述实现方式的任一种,在第八方面的另一种实现方式中,所述可恢复的停止模式适用于的情况包括:所述电源适配器和所述移动终端之间出现通信异常或所述移动终端的电池出现异常,所述快速充电模式停止,所述电源适配器重新询问所述移动终端是否同意开启所述快速充电模式,所述移动终端同意重新开启所述快速充电模式;或者,所述不可恢复的停止模式适用的情况包括:所述移动终端的电池充满或所述USB接口接触不良,所述电源适配器重新询问所述移动终端是否开启所述快速充电模式,所述移动终端不同意开启所述快速充电模式。
结合第八方面或其上述实现方式的任一种,在第八方面的另一种实现方式中,所述通信控制电路还用于确定连接所述电源适配器和所述移动终端的USB接口的数据线是否为支持所述快速充电模式的数据线。
结合第八方面或其上述实现方式的任一种,在第八方面的另一种实现方式中,在所述电源适配器和所述移动终端握手通信的任意过程中,当出现通信异常时,停止所述快速充电模式。
结合第八方面或其上述实现方式的任一种,在第八方面的另一种实现方式中,在所述电源适配器与所述移动终端通信的过程中,所述电源适配器作为主机,提供用于所述电源适配器和所述移动终端同步的时钟信号。
结合第八方面或其上述实现方式的任一种,在第八方面的另一种实现方式中,所述电源适配器通过所述USB接口中的D+数据线提供所述时钟信号,所述电源适配器与所述移动终端通过所述USB接口中的D-数据线进行通信和/或传输数据。
结合第八方面或其上述实现方式的任一种,在第八方面的另一种实现方式中,所述电源适配器和所述移动终端之间的通信和/或充电过程是基于开环电流分段恒流VOOC闪充技术或VOOC闪充通信协议进行的。
第九方面,提供一种快速充电方法,所述方法应用于电源适配器,所述电源适配器与移动终端通过通用串行总线USB接口相连,所述USB接口中的电源线用于所述电源适配器为所述移动终端充电,所述USB接口中的数 据线用于所述电源适配器和所述移动终端进行双向通信,所述电源适配器支持普通充电模式和快速充电模式,其中所述快速充电模式的充电电流大于所述普通充电模式的充电电流,所述方法包括:所述电源适配器确定开启所述快速充电模式;所述电源适配器向所述移动终端发送第二指令,所述第二指令用于询问所述电源适配器的当前输出电压是否适合作为所述快速充电模式的充电电压;所述电源适配器接收所述移动终端发送的所述第二指令的回复指令,所述第二指令的回复指令用于指示所述电源适配器的当前输出电压合适、偏高或偏低;所述电源适配器根据所述第二指令的回复指令,将所述电源适配器的输出电压调整至所述快速充电模式对应的充电电压;所述电源适配器向所述移动终端发送第三指令,所述第三指令用于询问所述移动终端当前支持的最大充电电流;所述电源适配器接收所述移动终端发送的所述第三指令的回复指令,所述第三指令的回复指令用于指示所述移动终端当前支持的最大充电电流;所述电源适配器根据所述第三指令的回复指令,确定所述快速充电模式的充电电流;所述电源适配器将输出电流调整至所述快速充电模式对应的充电电流,进入恒流阶段;在所述恒流阶段,所述电源适配器向所述移动终端发送第四指令,所述第四指令用于询问所述移动终端内的电池的当前电压;所述电源适配器接收所述移动终端发送的所述第四指令的回复指令,所述第四指令的回复指令用于指示所述移动终端内的电池的当前电压;所述电源适配器根据所述电池的当前电压,调整所述电源适配器的输出电流,从而以分段恒流的方式为所述移动终端充电。
结合第九方面,在第九方面的一种实现方式中,所述电源适配器确定开启所述快速充电模式,包括:所述电源适配器向所述移动终端发送所述第一指令,所述第一指令用于询问所述移动终端是否开启所述快速充电模式;所述电源适配器从所述移动终端接收所述第一指令的回复指令,所述第一指令的回复指令用于指示所述移动终端同意开启所述快速充电模式;所述电源适配器根据所述第一指令的回复指令,确定开启所述快速充电模式。
结合第九方面或其上述实现方式的任一种,在第九方面的另一种实现方式中,所述第一指令的回复指令包括多个比特,所述多个比特包括用于指示所述移动终端是否同意开启所述快速充电模式的比特,以及用于指示所述移动终端通路阻抗的比特,所述移动终端的通路阻抗用于所述电源适配器确定所述USB接口的接触是否良好。
结合第九方面或其上述实现方式的任一种,在第九方面的另一种实现方式中,所述第一指令的回复指令格式为101XYYYYYY,其中,X和Y均表示1个比特,X=1表示所述移动终端同意开启所述快速充电模式,X=0表示所述移动终端不同意开启所述快速充电模式,所述移动终端的通路阻抗=YYYYYY*5mΩ。
结合第九方面或其上述实现方式的任一种,在第九方面的另一种实现方式中,所述第一指令为10101000,或0xA8。
结合第九方面或其上述实现方式的任一种,在第九方面的另一种实现方式中,所述第二指令的回复指令包括多个比特,所述第二指令的回复指令中的多个比特包括用于指示所述电源适配器的当前输出电压合适、偏高或偏低的比特。
结合第九方面或其上述实现方式的任一种,在第九方面的另一种实现方式中,所述第二指令的回复指令的格式为1010XX0000,其中,X表示1个比特,XX=11表示所述电源适配器的当前输出电压合适,XX=10表示所述电源适配器的当前输出电压偏高,XX=01表示所述电源适配器的当前输出电压偏低。
结合第九方面或其上述实现方式的任一种,在第九方面的另一种实现方式中,所述第二指令为10100100,或者0xA4。
结合第九方面或其上述实现方式的任一种,在第九方面的另一种实现方式中,所述第三指令的回复指令包括多个比特,所述第三指令的回复指令中的多个比特包括用于指示所述移动终端当前支持的最大充电电流的比特。
结合第九方面或其上述实现方式的任一种,在第九方面的另一种实现方式中,所述第三指令的回复指令的格式为1010XXXXXX,其中,X表示1个比特,所述移动终端当前支持的最大充电电流=3000+(XXXXXX*250)mA。
结合第九方面或其上述实现方式的任一种,在第九方面的另一种实现方式中,所述第三指令为10100110或0xA6。
结合第九方面或其上述实现方式的任一种,在第九方面的另一种实现方式中,所述第四指令的回复指令包括多个比特,所述第四指令的回复指令中的多个比特包括用于指示所述电池的当前电压的比特,以及所述电池是否正在充电的比特。
结合第九方面或其上述实现方式的任一种,在第九方面的另一种实现方式中,所述第四指令的回复指令的格式为101XYYYYYY,其中,X和Y均表示1个比特,X=1表示所述电池正在充电,X=0表示所述电池未充电,所述电池的当前电压=3404+(YYYYYY*16)mV。
结合第九方面或其上述实现方式的任一种,在第九方面的另一种实现方式中,所述第四指令为10100010或0xA2。
结合第九方面或其上述实现方式的任一种,在第九方面的另一种实现方式中,所述方法还包括:所述电源适配器确定所述USB接口的接触不良;所述电源适配器向所述移动终端发送第五指令,所述第五指令用于通知所述移动终端所述USB接口的接触不良,退出所述快速充电模式或重新确定是否开启所述快速充电模式。
结合第九方面或其上述实现方式的任一种,在第九方面的另一种实现方式中,所述第五指令为10110010或0xB2。
结合第九方面或其上述实现方式的任一种,在第九方面的另一种实现方式中,所述方法还包括:当所述电源适配器确定从所述移动终端接收到的回复指令出现编码错误时,所述电源适配器执行以下操作中的至少一种:退出所述快速充电模式、停止充电或重新确定是否开启所述快速充电模式。
结合第九方面或其上述实现方式的任一种,在第九方面的另一种实现方式中,所述电源适配器向所述移动终端发送的指令包括多个比特,所述电源适配器在发送任一指令时,先发送所述任一指令的多个比特中的最高有效位MSB;或者,所述电源适配器从所述移动终端接收的指令包括多个比特,所述电源适配器在接收某一指令时,先接收所述某一指令的多个比特中的MSB。
结合第九方面或其上述实现方式的任一种,在第九方面的另一种实现方式中,所述电源适配器与所述移动终端通信过程中的时钟信号或时钟中断信号均由所述电源适配器提供。
结合第九方面或其上述实现方式的任一种,在第九方面的另一种实现方式中,所述电源适配器向所述移动终端发送的指令包括多个比特,在所述多个比特中的每个比特发送的过程中,所述电源适配器先发送所述每个比特,再发送时钟中断信号;或者,所述电源适配器从所述移动终端接收的回复指令包括多个比特,在所述多个比特中的每个比特接收的过程中,所述电源适 配器先发送时钟中断信号,然后延迟预设时间间隔,再接收所述每个比特。
结合第九方面或其上述实现方式的任一种,在第九方面的另一种实现方式中,所述电源适配器向所述移动终端发送的每个指令包括8个比特的数据,所述电源适配器通过所述时钟信号的连续的8个时钟周期向所述移动终端发送所述8个比特的数据,所述连续的8个时钟周期中的每个时钟周期的前10us为低电平,后500us为高电平;或者,所述电源适配器从所述移动终端接收的每个回复指令包括10个比特的数据,所述电源适配器通过所述时钟信号的连续10个时钟周期从所述移动终端接收所述10个比特的数据,所述连续的10个时钟周期中的每个时钟周期的前500us为高电平,后10us为低电平。
结合第九方面或其上述实现方式的任一种,在第九方面的另一种实现方式中,在所述电源适配器从所述移动终端接收指令的过程中,所述时钟信号的高电平的最小值为所述电源适配器的VDD-0.7V;或者,在所述电源适配器从所述移动终端接收指令的过程中,所述时钟信号的低电平的最大值为0.8V;或者,在所述电源适配器向所述移动终端发送指令的过程中,所述时钟信号的高电平的最小值为0.25VDD+0.8V;或者,在所述电源适配器向所述移动终端发送指令的过程中,所述时钟信号的高电平的最大值为4.5V;或者,在所述电源适配器向所述移动终端发送指令的过程中,所述时钟信号的低电平的最大值为0.15VDD;其中,VDD为所述电源适配器的工作电压,和/或3.2V<VDD<4.5V。
结合第九方面或其上述实现方式的任一种,在第九方面的另一种实现方式中,所述移动终端收到所述时钟中断信号之后,所述电源适配器向所述移动终端发送的指令中的数据的保持时间为500±5us。
第十方面,提供一种快速充电方法,所述方法应用于移动终端,所述移动终端与电源适配器通过通用串行总线USB接口相连,所述USB接口中的电源线用于为所述移动终端充电,所述USB接口中的数据线用于所述移动终端和所述电源适配器进行双向通信,所述移动终端支持普通充电模式和快速充电模式,其中所述快速充电模式的充电电流大于所述普通充电模式的充电电流,所述方法包括:所述移动终端确定开启所述快速充电模式;所述移动终端从所述电源适配器接收第二指令,所述第二指令用于询问所述电源适配器的当前输出电压是否适合作为所述快速充电模式的充电电压;所述移动 终端向所述电源适配器发送所述第二指令的回复指令,所述第二指令的回复指令用于指示所述电源适配器的当前输出电压合适、偏高或偏低,以便所述电源适配器根据所述第二指令的回复指令将所述电源适配器的输出电压调整至所述快速充电模式对应的充电电压;所述移动终端从所述电源适配器接收第三指令,所述第三指令用于询问所述移动终端当前支持的最大充电电流;所述移动终端向所述电源适配器发送所述第三指令的回复指令,所述第三指令的回复指令用于指示所述移动终端当前支持的最大充电电流,以便所述电源适配器根据所述第三指令的回复指令,确定所述快速充电模式对应的充电电流;在所述电源适配器将输出电流调整至所述快速充电模式对应的充电电流、进入恒流阶段之后,所述移动终端从所述电源适配器接收第四指令,所述第四指令用于询问所述移动终端内的电池的当前电压;所述移动终端向所述电源适配器发送所述第四指令的回复指令,所述第四指令的回复指令用于指示所述移动终端内的电池的当前电压,以便所述电源适配器根据所述电池的当前电压,调整所述电源适配器的输出电流,从而以分段恒流的方式为所述移动终端充电。
结合第十方面,在第十方面的一种实现方式中,所述移动终端确定开启所述快速充电模式,包括:所述移动终端从所述电源适配器接收所述第一指令,所述第一指令用于询问所述移动终端是否开启所述快速充电模式;所述移动终端向所述电源适配器发送所述第一指令的回复指令,所述第一指令的回复指令用于指示所述移动终端同意开启所述快速充电模式。
结合第十方面或其上述实现方式的任一种,在第十方面的另一种实现方式中,所述第一指令的回复指令包括多个比特,所述多个比特包括用于指示所述移动终端是否同意开启所述快速充电模式的比特,以及用于指示所述移动终端通路阻抗的比特,所述移动终端的通路阻抗用于所述电源适配器确定所述USB接口的接触是否良好。
结合第十方面或其上述实现方式的任一种,在第十方面的另一种实现方式中,所述第一指令的回复指令格式为101XYYYYYY,其中,X和Y均表示1个比特,X=1表示所述移动终端同意开启所述快速充电模式,X=0表示所述移动终端不同意开启所述快速充电模式,所述移动终端的通路阻抗=YYYYYY*5mΩ。
结合第十方面或其上述实现方式的任一种,在第十方面的另一种实现方 式中,所述第一指令为10101000,或0xA8。
结合第十方面或其上述实现方式的任一种,在第十方面的另一种实现方式中,所述第二指令的回复指令包括多个比特,所述第二指令的回复指令中的多个比特包括用于指示所述电源适配器的当前输出电压合适、偏高或偏低的比特。
结合第十方面或其上述实现方式的任一种,在第十方面的另一种实现方式中,所述第二指令的回复指令的格式为1010XX0000,其中,X表示1个比特,XX=11表示所述电源适配器的当前输出电压合适,XX=10表示所述电源适配器的当前输出电压偏高,XX=01表示所述电源适配器的当前输出电压偏低。
结合第十方面或其上述实现方式的任一种,在第十方面的另一种实现方式中,所述第二指令为10100100,或者0xA4。
结合第十方面或其上述实现方式的任一种,在第十方面的另一种实现方式中,所述第三指令的回复指令包括多个比特,所述第三指令的回复指令中的多个比特包括用于指示所述移动终端当前支持的最大充电电流的比特。
结合第十方面或其上述实现方式的任一种,在第十方面的另一种实现方式中,所述第三指令的回复指令的格式为1010XXXXXX,其中,X表示1个比特,所述移动终端当前支持的最大充电电流=3000+(XXXXXX*250)mA。
结合第十方面或其上述实现方式的任一种,在第十方面的另一种实现方式中,所述第三指令为10100110或0xA6。
结合第十方面或其上述实现方式的任一种,在第十方面的另一种实现方式中,所述第四指令的回复指令包括多个比特,所述第四指令的回复指令中的多个比特包括用于指示所述电池的当前电压的比特,以及所述电池是否正在充电的比特。
结合第十方面或其上述实现方式的任一种,在第十方面的另一种实现方式中,所述第四指令的回复指令的格式为101XYYYYYY,其中,X和Y均表示1个比特,X=1表示所述电池正在充电,X=0表示所述电池未充电,所述电池的当前电压=3404+(YYYYYY*16)mV。
结合第十方面或其上述实现方式的任一种,在第十方面的另一种实现方式中,所述第四指令为10100010或0xA2。
结合第十方面或其上述实现方式的任一种,在第十方面的另一种实现方式中,所述方法还包括:所述移动终端从所述电源适配器接收第五指令,所述第五指令用于通知所述移动终端所述USB接口的接触不良,退出所述快速充电模式或重新开启所述快速充电模式。
结合第十方面或其上述实现方式的任一种,在第十方面的另一种实现方式中,所述第五指令为10110010或0xB2。
结合第十方面或其上述实现方式的任一种,在第十方面的另一种实现方式中,所述方法还包括:当所述电源适配器确定从所述移动终端接收到的回复指令出现编码错误时,所述移动终端执行以下操作中的至少一种:退出所述快速充电模式、停止充电或重新确定是否开启所述快速充电模式。
结合第十方面或其上述实现方式的任一种,在第十方面的另一种实现方式中,所述移动终端向所述电源适配器发送的指令包括多个比特,所述移动终端在发送任一指令时,先发送所述任一指令的多个比特中的最高有效位MSB;或者,所述移动终端从所述电源适配器接收的指令包括多个比特,所述移动终端在接收某一指令时,先接收所述某一指令的多个比特中的MSB。
结合第十方面或其上述实现方式的任一种,在第十方面的另一种实现方式中,所述电源适配器与所述移动终端通信过程中的时钟信号均由所述电源适配器提供。
结合第十方面或其上述实现方式的任一种,在第十方面的另一种实现方式中,所述电源适配器向所述移动终端发送的指令包括多个比特,在所述多个比特中的每个比特发送的过程中,所述电源适配器先发送所述每个比特,再发送时钟中断信号;或者,所述电源适配器从所述移动终端接收的回复指令包括多个比特,在所述多个比特中的每个比特接收的过程中,所述电源适配器先发送时钟中断信号,然后延迟预设时间间隔,再接收所述每个比特。
结合第十方面或其上述实现方式的任一种,在第十方面的另一种实现方式中,所述电源适配器向所述移动终端发送的每个指令包括8个比特的数据,所述电源适配器通过所述时钟信号的连续的8个时钟周期向所述移动终端发送所述8个比特的数据,所述连续的8个时钟周期中的每个时钟周期的前10us为低电平,后500us为高电平;或者,所述电源适配器从所述移动终端接收的每个回复指令包括10个比特的数据,所述电源适配器通过所述时钟信号的连续10个时钟周期从所述移动终端接收所述10个比特的数据,所述 连续的10个时钟周期中的每个时钟周期的前500us为高电平,后10us为低电平。
结合第十方面或其上述实现方式的任一种,在第十方面的另一种实现方式中,在所述电源适配器从所述移动终端接收指令的过程中,所述时钟信号的高电平的最小值为所述电源适配器的VDD-0.7V;或者,在所述电源适配器从所述移动终端接收指令的过程中,所述时钟信号的低电平的最大值为0.8V;或者,在所述电源适配器向所述移动终端发送指令的过程中,所述时钟信号的高电平的最小值为0.25VDD+0.8V;或者,在所述电源适配器向所述移动终端发送指令的过程中,所述时钟信号的高电平的最大值为4.5V;或者,在所述电源适配器向所述移动终端发送指令的过程中,所述时钟信号的低电平的最大值为0.15VDD;其中,VDD为所述电源适配器的工作电压,和/或3.2V<VDD<4.5V。
结合第十方面或其上述实现方式的任一种,在第十方面的另一种实现方式中,所述移动终端收到所述时钟中断信号之后,所述电源适配器向所述移动终端发送的指令中的数据的保持时间为500±5us。
本发明实施例中,电源适配器并非盲目地增大输出电流进行快速充电,而是需要与移动终端进行双向通信,协商是否可以采用快速充电模式,与现有技术相比,提升了快速充电过程的安全性。
附图说明
为了更清楚地说明本发明实施例的技术方案,下面将对本发明实施例中所需要使用的附图作简单地介绍,显而易见地,下面所描述的附图仅仅是本发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。
图1是本发明实施例的快速充电方法的示意性流程图。
图2是本发明实施例的快速充电方法的示意性流程图。
图3是本发明实施例的快充开启过程的示例图。
图4是本发明实施例的快速充电过程的示例图。
图5是本发明实施例的电源适配器的示意性结构图。
图6是本发明实施例的移动终端的示意性结构图。
图7是本发明实施例的快速充电方法的示意性流程图。
图8是本发明实施例的快速充电方法的示意性流程图。
图9是本发明实施例的电源适配器的示意性结构图。
图10是本发明实施例的移动终端的示意性结构图。
具体实施方式
下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例是本发明的一部分实施例,而不是全部实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动的前提下所获得的所有其他实施例,都应属于本发明保护的范围。
图1是本发明实施例的快速充电方法的示意性流程图。图1的方法应用于电源适配器。所述电源适配器与移动终端通过通用串行总线(Universal Serial Bus,USB)接口相连,该USB接口可以是普通的USB接口,也可以是micro USB接口。所述USB接口中的电源线用于所述电源适配器为所述移动终端充电,其中,USB接口中的电源线可以是USB接口中的VBus线和/或地线。所述USB接口中的数据线用于所述电源适配器和所述移动终端进行双向通信,该数据线可以是USB接口中的D+线和/或D-线,所谓双向通信可以指电源适配器和终端双方进行信息的交互。所述电源适配器支持普通充电模式和快速充电模式,其中所述快速充电模式的充电电流大于所述普通充电模式的充电电流(或者,快速充电模式的充电速度大于所述普通充电模式的充电速度)。一般而言,普通充电模式可以理解为额定输出电压为5V,额定输出电流小于等于2.5A的充电模式,此外,在普通充电模式下,电源适配器输出端口D+和D-可以短路,而本发明实施例中的快速充电模式则不同,本发明实施例的快速充电模式下电源适配器可以利用D+和D-与移动终端进行通信和数据交换。但本发明实施例对普通充电模式不作具体限定,只要电源适配器支持两种充电模式,其中一种充电模式的充电速度(或电流)大于另一种充电模式的充电速度,则充电速度较慢的充电模式就可以理解为普通充电模式。
图1的方法包括:
110、所述电源适配器通过所述USB接口中的数据线与所述移动终端进行双向通信,以确定使用所述快速充电模式为所述移动终端充电。
需要说明的是,在电源适配器与移动终端协商是否采用快速充电模式为 所述移动终端的过程中,电源适配器可以仅与移动终端保持连接状态,不充电,也可以采用普通充电模式为移动终端充电,还可以采用小电流为移动终端充电,本发明实施例对此不作具体限定。
120、所述电源适配器将充电电流调整至所述快速充电模式对应的充电电流,为所述移动终端充电。
电源适配器确定采用快速充电模式为移动终端充电之后,可以直接将充电电流调整至快速充电模式对应的充电电流,也可以与移动终端协商快速充电模式的充电电流,例如,根据移动终端中的电池的当前电量来确定快速充电模式对应的充电电流。
本发明实施例中,电源适配器并非盲目地增大输出电流进行快速充电,而是需要与移动终端进行双向通信,协商是否可以采用快速充电模式,与现有技术相比,提升了快速充电过程的安全性。
可选地,作为一个实施例,步骤110可包括:所述电源适配器向所述移动终端发送第一指令,所述第一指令用于询问所述移动终端是否开启所述快速充电模式;所述电源适配器从所述移动终端接收所述第一指令的回复指令,所述第一指令的回复指令用于指示所述移动终端同意开启所述快速充电模式。
可选地,作为一个实施例,在所述电源适配器向所述移动终端发送第一指令之前,上述方法还包括:所述电源适配器与所述移动终端之间通过所述普通充电模式充电;所述电源适配器向所述移动终端发送第一指令,包括:所述电源适配器确定所述普通充电模式的充电时长大于预设阈值后,向所述移动终端发送所述第一指令。
应理解,当电源适配器确定所述普通充电模式的充电时长大于预设阈值后,电源适配器可以认为终端已经识别自己为电源适配器,可以开启快充询问通信了。
可选地,作为一个实施例,所述电源适配器向所述移动终端发送第一指令,包括:所述电源适配器确定采用大于或等于预设的电流阈值的充电电流充电预设时长后,向所述移动终端发送所述第一指令。
可选地,作为一个实施例,在步骤120之前,图1的方法还可包括:所述电源适配器通过所述USB接口中的数据线与所述移动终端进行双向通信,以确定所述快速充电模式对应的充电电压;所述电源适配器将充电电压调整 至所述快速充电模式对应的充电电压。
可选地,作为一个实施例,步骤110可包括:所述电源适配器向所述移动终端发送第二指令,所述第二指令用于询问所述电源适配器的当前电压是否适合作为所述快速充电模式的充电电压;所述电源适配器接收所述移动终端发送的所述第二指令的回复指令,所述第二指令的回复指令用于指示所述电源适配器的当前电压合适、偏高或偏低;所述电源适配器根据所述第二指令的回复指令,确定所述快速充电模式的充电电压。
可选地,作为一个实施例,在步骤120之前,图1的方法还可包括:所述电源适配器通过所述USB接口中的数据线与所述移动终端进行双向通信,以确定所述快速充电模式对应的充电电流。
可选地,作为一个实施例,上述电源适配器通过所述USB接口中的数据线与所述移动终端进行双向通信,以确定所述快速充电模式对应的充电电流,可包括:所述电源适配器向所述移动终端发送第三指令,所述第三指令用于询问所述移动终端当前支持的最大充电电流;所述电源适配器接收所述移动终端发送的所述第三指令的回复指令,所述第三指令的回复指令用于指示所述移动终端当前支持的最大充电电流;所述电源适配器根据所述第三指令的回复指令,确定所述快速充电模式的充电电流。
电源适配器可以直接将上述最大充电电流确定为快速充电模式的充电电流,或者将充电电流设置为小于该最大充电电流的某一电流值。
可选地,作为一个实施例,图1的方法还可包括:在所述电源适配器使用所述快速充电模式为所述移动终端充电的过程中,所述电源适配器通过所述USB接口中的数据线与所述移动终端进行双向通信,以不断调整所述电源适配器的充电电流。
电源适配器可以不断询问移动终端的当前工作状态,从而不断调整充电电流,如询问移动终端的电池电压、电池电量等。
可选地,作为一个实施例,所述电源适配器通过所述USB接口中的数据线与所述移动终端进行双向通信,以不断调整所述电源适配器的充电电流,可包括:所述电源适配器向所述移动终端发送第四指令,所述第四指令用于询问所述移动终端内的电池的当前电压;所述电源适配器接收所述移动终端发送的所述第四指令的回复指令,所述第四指令的回复指令用于指示所述移动终端内的电池的当前电压;所述电源适配器根据所述电池的当前电 压,调整所述充电电流。
可选地,作为一个实施例,所述电源适配器根据所述电池的当前电压,调整所述充电电流,包括:所述电源适配器根据所述电池的当前电压,以及预设的电池电压值和充电电流值的对应关系,将所述电源适配器的充电电流调整至所述电池的当前电压对应的充电电流值。
具体地,电源适配器可以预先存储电池电压值和充电电流值的对应关系。
可选地,作为一个实施例,图1的方法还可包括:在所述电源适配器使用所述快速充电模式为所述移动终端充电的过程中,所述电源适配器通过所述USB接口中的数据线与所述移动终端进行双向通信,以确定所述USB接口是否接触不良;当确定所述USB接口接触不良时,所述电源适配器退出所述快速充电模式。
可选地,作为一个实施例,在所述电源适配器通过所述USB接口中的数据线与所述移动终端进行双向通信,以确定所述USB接口是否接触不良之前,图1的方法还可包括:所述电源适配器从所述移动终端接收用于指示所述移动终端的通路阻抗的信息;所述电源适配器通过所述USB接口中的数据线与所述移动终端进行双向通信,以确定所述USB接口是否接触不良,包括:所述电源适配器向所述移动终端发送第四指令,所述第四指令用于询问所述移动终端内的电池的电压;所述电源适配器接收所述移动终端发送的所述第四指令的回复指令,所述第四指令的回复指令用于指示所述移动终端内的电池的电压;所述电源适配器根据所述电源适配器的充电电压和所述电池的电压,确定所述电源适配器到所述电池的通路阻抗;所述电源适配器根据所述电源适配器到所述电池的通路阻抗、所述移动终端的通路阻抗,以及所述电源适配器和所述移动终端之间的充电线线路的通路阻抗,确定所述USB接口是否接触不良。
移动终端可以预先记录该移动终端的通路阻抗1,例如,同一型号的移动终端由于结构一样,在出厂设置时,将该移动终端的通路阻抗设置为同一值。同理,电源适配器可以预先记录充电线路的通路阻抗2。当电源适配器获取到移动终端的电池两端的电压时,就可以根据电源适配器到电池两端的压降,确定整个通路的通路阻抗3,当通路阻抗3>通路阻抗1+通路阻抗2,或通路阻抗3-(通路阻抗1+通路阻抗2)>阻抗阈值时,认为USB接口接触不 良。
可选地,作为一个实施例,在所述电源适配器退出所述快速充电模式之前,图1的方法还可包括:所述电源适配器向所述移动终端发送第五指令,所述第五指令用于指示所述USB接口接触不良。
电源适配器发送完第五指令,可以退出快速充电模式或复位。
上文中结合图1,从电源适配器的角度详细描述了根据本发明实施例的快速充电方法,下面将结合图2,从移动终端的角度描述根据本发明实施例的快速充电方法。
应理解,移动终端侧描述的电源适配器与移动终端的交互及相关特性、功能等与电源适配器侧的描述相应,为了简洁,适当省略重复的描述。
图2是本发明实施例的快速充电方法的示意性流程图。图2的方法应用于移动终端,所述移动终端与电源适配器通过通用串行总线USB接口相连,所述USB接口中的电源线用于为所述移动终端充电,所述USB接口中的数据线用于所述移动终端和所述电源适配器进行双向通信,所述移动终端支持普通充电模式和快速充电模式,其中所述快速充电模式的充电电流大于所述普通充电模式的充电电流,图2的方法包括:
210、所述移动终端通过所述USB接口中的数据线与所述电源适配器进行双向通信,以便所述电源适配器确定使用所述快速充电模式为所述移动终端充电;
220、所述移动终端从所述电源适配器接收所述快速充电模式对应的充电电流,为所述移动终端内的电池充电。
本发明实施例中,电源适配器并非盲目地增大输出电流进行快速充电,而是需要与移动终端进行双向通信,协商是否可以采用快速充电模式,与现有技术相比,提升了快速充电过程的安全性。
可选地,作为一个实施例,所述移动终端通过所述USB接口中的数据线与所述电源适配器进行双向通信,以便所述电源适配器确定使用所述快速充电模式为所述移动终端充电,包括:所述移动终端接收所述电源适配器发送的第一指令,所述第一指令用于询问所述移动终端是否开启所述快速充电模式;所述移动终端向所述电源适配器发送所述第一指令的回复指令,所述第一指令的回复指令用于指示所述移动终端同意开启所述快速充电模式。
可选地,作为一个实施例,在所述移动终端接收所述电源适配器发送的 第一指令之前,所述方法还包括:所述移动终端与所述电源适配器之间通过所述普通充电模式充电;所述移动终端接收所述电源适配器发送的第一指令,包括:所述电源适配器确定所述普通充电模式的充电时长大于预设阈值后,所述移动终端接收所述电源适配器发送的所述第一指令。
可选地,作为一个实施例,在所述移动终端从所述电源适配器接收所述快速充电模式对应的充电电流,为所述移动终端内的电池充电之前,所述方法包括:所述移动终端通过所述USB接口中的数据线与所述电源适配器进行双向通信,以便所述电源适配器确定所述快速充电模式对应的充电电压。
可选地,作为一个实施例,所述移动终端通过所述USB接口中的数据线与所述电源适配器进行双向通信,以便所述电源适配器确定所述快速充电模式对应的充电电压,包括:所述移动终端接收所述电源适配器发送的第二指令,所述第二指令用于询问所述电源适配器的当前电压是否适合作为所述快速充电模式的充电电压;所述移动终端向所述电源适配器发送所述第二指令的回复指令,所述第二指令的回复指令用于指示所述电源适配器的当前电压合适、偏高或偏低。
可选地,作为一个实施例,在所述移动终端从所述电源适配器接收所述快速充电模式对应的充电电流,为所述移动终端内的电池充电之前,所述方法包括:所述移动终端通过所述USB接口中的数据线与所述电源适配器进行双向通信,以便所述电源适配器确定所述快速充电模式对应的充电电流。
可选地,作为一个实施例,所述移动终端通过所述USB接口中的数据线与所述电源适配器进行双向通信,以便所述电源适配器确定所述快速充电模式对应的充电电流,包括:所述移动终端接收所述电源适配器发送的第三指令,所述第三指令用于询问所述移动终端当前支持的最大充电电流;所述移动终端向所述电源适配器发送所述第三指令的回复指令,所述第三指令的回复指令用于指示所述移动终端当前支持的最大充电电流,以便所述电源适配器根据所述最大充电电流确定所述快速充电模式对应的充电电流。
可选地,作为一个实施例,所述方法还包括:在所述电源适配器使用所述快速充电模式为所述移动终端充电的过程中,所述移动终端通过所述USB接口中的数据线与所述电源适配器进行双向通信,以便所述电源适配器不断调整所述电源适配器的充电电流。
可选地,作为一个实施例,所述移动终端通过所述USB接口中的数据 线与所述电源适配器进行双向通信,以便所述电源适配器不断调整所述电源适配器的充电电流,包括:所述移动终端接收所述电源适配器发送的第四指令,所述第四指令用于询问所述移动终端内的电池的当前电压;所述移动终端向所述电源适配器发送所述第四指令的回复指令,所述第四指令的回复指令用于指示所述移动终端内的电池的当前电压,以便所述电源适配器根据所述电池的当前电压,不断调整所述电源适配器的充电电流。
可选地,作为一个实施例,所述方法还包括:在所述电源适配器使用所述快速充电模式为所述移动终端充电的过程中,所述移动终端通过所述USB接口中的数据线与所述电源适配器进行双向通信,以便所述电源适配器确定所述USB接口是否接触不良。
可选地,作为一个实施例,所述移动终端通过所述USB接口中的数据线与所述电源适配器进行双向通信,以便所述电源适配器确定所述USB接口是否接触不良,包括:所述移动终端接收所述电源适配器发送的第四指令,所述第四指令用于询问所述移动终端内的电池的当前电压;所述移动终端向所述电源适配器发送所述第四指令的回复指令,所述第四指令的回复指令用于指示所述移动终端内的电池的当前电压,以便所述电源适配器根据所述充电适配器的充电电压和所述电池的当前电压,确定所述USB接口是否接触不良。
可选地,作为一个实施例,所述方法还包括:所述移动终端接收所述电源适配器发送的第五指令,所述第五指令用于指示所述USB接口接触不良。
下面结合具体例子,更加详细地描述本发明实施例。应注意,图3至图4的例子仅仅是为了帮助本领域技术人员理解本发明实施例,而非要将本发明实施例限于所例示的具体数值或具体场景。本领域技术人员根据所给出的图3至图4的例子,显然可以进行各种等价的修改或变化,这样的修改或变化也落入本发明实施例的范围内。
图3是本发明实施例的快充开启过程的示例图。
如图3所示,闪充的开启过程一共包含五个阶段:
阶段1:
移动终端可以通过D+、D-检测电源适配器类型,当检测到电源适配器为非USB类型的充电装置时,则移动终端吸收的电流可以大于预设的电流阈值I2。当电源适配器检测到预设时长(例如,可以是连续T1时间)内电 源适配器输出电流大于或等于I2时,则电源适配器认为终端对于电源适配器类型识别已经完成,电源适配器开启电源适配器与移动终端之间的握手通信,电源适配器发送指令1(对应于上述第一指令)询问终端是否开启快速充电模式(或称为闪充)。
当电源适配器收到移动终端的回复指令指示移动终端不同意开启快速充电模式时,则再次检测电源适配器的输出电流,当电源适配器的输出电流仍然大于或等于I2时,再次发起请求询问移动终端是否开启快速充电模式,重复阶段1的上述步骤,直到移动终端答复同意开启快速充电模式,或电源适配器的输出电流不再满足大于或等于I2的条件。
当移动终端同意开启闪充后,闪充充电过程开启,闪充通信流程进入第2阶段。
阶段2:
电源适配器输出电压可以包括多个档位,电源适配器向移动终端发送指令2(对应于上述第二指令)询问移动终端所述电源适配器的输出电压是否匹配(或是否合适,即是否适合作为快速充电模式下的充电电压)。
移动终端答复电源适配器所述电源适配器的输出电压偏高或偏低或匹配,如电源适配器接收到所述移动终端关于所述电源适配器的输出电压偏高或偏低的反馈时,则电源适配器将电源适配器的输出电压调整一格档位,并再次向移动终端发送指令2,重新询问移动终端所述电源适配器的输出电压是否匹配。
重复阶段2以上步骤直到移动终端答复电源适配器所述电源适配器的输出电压处于匹配档位后,进入第3阶段。
阶段3:
当电源适配器收到移动终端答复电源适配器的输出电压匹配的反馈后,电源适配器向移动终端发送指令3(对应于上述第三指令),询问移动终端当前支持的最大充电电流,移动终端答复电源适配器所述移动终端当前支持的最大充电电流值,并进入第4阶段。
阶段4:
电源适配器接收移动终端答复的移动终端当前支持的最大充电电流值的反馈,电源适配器可以设置其输出电流为指定值,电源适配器输出电流,进入恒流阶段。
阶段5:
当进入恒流阶段时,电源适配器每间隔一段时间发送指令4(对应于上述第四指令),询问移动终端电池的当前电压,移动终端可以向电源适配器反馈移动终端电池的当前电压,电源适配器可以根据移动终端关于移动终端电池的当前电压的反馈,判断USB接触是否良好以及是否需要降低移动终端当前的充电电流值。当电源适配器判断为USB接触不良,发送指令5(对应于第五指令),之后复位以重新进入阶段1。
可选地,在一个实施例中,在阶段1中,移动终端回复指令1时,指令1数据中可以附带该移动终端的通路阻抗的数据(或信息),移动终端通路阻抗数据可以用于在阶段5判断USB接触是否良好。
可选地,在一个实施例中,在阶段2中,从移动终端同意启动快速充电模式,到电源适配器将电压调整到合适值的时间可以控制在一定范围之内,该时间超出预定范围则移动终端可以判定为请求异常,快速(或闪充)复位。
可选地,在一个实施例中,在阶段2中,可以在电源适配器的输出电压调整到相较于电池当前电压高于ΔV(ΔV约为200~500mV)时,移动终端对电源适配器作出关于电源适配器的输出电压合适的反馈。
可选地,在一个实施例中,在阶段4中,电源适配器输出电流值的大小调整速度可以控制一定范围之内,这样可以避免由于调整速度过快导致快充异常中断。
可选地,在一个实施例中,在阶段5中,恒流阶段,电源适配器的输出电流值的大小的变化幅度可以控制在5%以内。
可选地,在一个实施例中,在阶段5中,电源适配器实时监测充电回路阻抗:即通过测量电源适配器的输出电压、当前充电电流及读取的终端电池电压,监测整个充电回路阻抗。当测出充电回路阻抗>终端通路阻抗+闪充数据线阻抗时,可以认为USB接触不良,快充复位。
可选地,在一个实施例中,开启快充模式之后,电源适配器与移动终端之间的通信时间间隔可以控制在一定范围之内,避免出现闪充复位。
可选地,在一个实施例中,快速充电模式(或快速充电过程)的停止可以分为可恢复的停止和不可恢复的停止两种:
例如,当移动终端检测到电池充满或USB接触不良时,快充停止并复位,进入阶段1,移动终端不同意开启快速充电模式,快充通信流程不进入 阶段2,此时停止的快充过程可以为不可恢复的停止。
例如,当移动终端和电源适配器出现通信异常时,快充停止并复位以进入阶段1,在满足阶段1要求后,移动终端同意开启快充模式以恢复快充充电过程,此时停止的快充过程可以为可恢复的停止。
例如,当移动终端检测到电池出现异常时,快充停止并复位以进入阶段1,在进入阶段1后,移动终端不同意开启快充模式。直到电池恢复正常,且满足阶段1要求后,移动终端同意开启闪充以恢复闪充充电过程,此时停止的快充过程可以为可恢复的停止。
下面结合图4,给出快速充电过程的一个示例。图4示出的整个流程与图3所描述的流程大致对应。
从图4可以看出,电源适配器一开始处于DCP模式,即D+、D-短接短路模式,采用普通充电模式为移动终端充电。在发送第一指令前,电源适配器还可以判断数据线是否为快充数据线,具体的判断方式有很多种,例如,在数据线中加识别电路,电源适配器通过与该识别电路进行信息交互识别该数据线是否为快充数据线。此外,还需要说明的是,在整个快充流程中,当出现通信异常或阻抗异常时,电源适配器可以退出快充流程或复位。
上文中结合图1至图4,详细描述了根据本发明实施例的快速充电方法,下面将结合图5至图8,详细描述根据本发明实施例的电源适配器和移动终端。
图5是本发明实施例的电源适配器的示意性结构图。图5的电源适配器500能够实现图1至图4中由电源适配器执行的各个步骤,为避免重复,此处不再详述。
具体而言,所述电源适配器500与移动终端通过通用串行总线USB接口相连,所述USB接口中的电源线用于所述电源适配器500为所述移动终端充电,所述USB接口中的数据线用于所述电源适配器500和所述移动终端进行双向通信,所述电源适配器500支持普通充电模式和快速充电模式,其中所述快速充电模式的充电电流大于所述普通充电模式的充电电流,所述电源适配器500包括:
通信电路510,用于通过所述USB接口中的数据线与所述移动终端进行双向通信,以确定使用所述快速充电模式为所述移动终端充电;
电流调整电路520,用于将充电电流调整至所述快速充电模式对应的充 电电流,为所述移动终端充电。
本发明实施例中,电源适配器并非盲目地增大输出电流进行快速充电,而是需要与移动终端进行双向通信,协商是否可以采用快速充电模式,与现有技术相比,提升了快速充电过程的安全性。
可选地,作为一个实施例,所述通信电路510具体用于向所述移动终端发送第一指令,所述第一指令用于询问所述移动终端是否开启所述快速充电模式;从所述移动终端接收所述第一指令的回复指令,所述第一指令的回复指令用于指示所述移动终端同意开启所述快速充电模式。
可选地,作为一个实施例,所述电源适配器500还包括:功率转换电路,用于与所述移动终端之间通过所述普通充电模式充电;所述通信电路510具体用于确定所述普通充电模式的充电时长大于预设阈值后,向所述移动终端发送所述第一指令。
可选地,作为一个实施例,所述通信电路510还用于通过所述USB接口中的数据线与所述移动终端进行双向通信,以确定所述快速充电模式对应的充电电压;所述电源适配器500还包括:电压调整电路,用于将充电电压调整至所述快速充电模式对应的充电电压。
可选地,作为一个实施例,所述通信电路510还用于向所述移动终端发送第二指令,所述第二指令用于询问所述电源适配器500的当前电压是否适合作为所述快速充电模式的充电电压;接收所述移动终端发送的所述第二指令的回复指令,所述第二指令的回复指令用于指示所述电源适配器500的当前电压合适、偏高或偏低;所述电源调整电路具体用于根据所述第二指令的回复指令,确定所述快速充电模式的充电电压。
可选地,作为一个实施例,所述通信电路510具体用于通过所述USB接口中的数据线与所述移动终端进行双向通信,以确定所述快速充电模式对应的充电电流。
可选地,作为一个实施例,所述通信电路510具体用于向所述移动终端发送第三指令,所述第三指令用于询问所述移动终端当前支持的最大充电电流;接收所述移动终端发送的所述第三指令的回复指令,所述第三指令的回复指令用于指示所述移动终端当前支持的最大充电电流;根据所述第三指令的回复指令,确定所述快速充电模式的充电电流。
可选地,作为一个实施例,所述通信电路510还用于在所述电源适配器 500使用所述快速充电模式为所述移动终端充电的过程中,通过所述USB接口中的数据线与所述移动终端进行双向通信,以不断调整所述电源适配器500的充电电流。
可选地,作为一个实施例,所述通信电路510具体用于向所述移动终端发送第四指令,所述第四指令用于询问所述移动终端内的电池的当前电压;接收所述移动终端发送的所述第四指令的回复指令,所述第四指令的回复指令用于指示所述移动终端内的电池的当前电压;所述电流调整电路520具体用于根据所述电池的当前电压,调整所述充电电流。
可选地,作为一个实施例,所述电流调整电路520具体用于根据所述电池的当前电压,以及预设的电池电压值和充电电流值的对应关系,将所述电源适配器500的充电电流调整至所述电池的当前电压对应的充电电流值。
可选地,作为一个实施例,所述通信电路510还用于在所述电源适配器500使用所述快速充电模式为所述移动终端充电的过程中,通过所述USB接口中的数据线与所述移动终端进行双向通信,以确定所述USB接口是否接触不良;当确定所述USB接口接触不良时,退出所述快速充电模式。
可选地,作为一个实施例,所述通信电路510具体用于从所述移动终端接收用于指示所述移动终端的通路阻抗的信息;接收所述移动终端发送的所述第四指令的回复指令,所述第四指令的回复指令用于指示所述移动终端内的电池的电压;根据所述电源适配器500的充电电压和所述电池的电压,确定所述电源适配器500到所述电池的通路阻抗;根据所述电源适配器500到所述电池的通路阻抗、所述移动终端的通路阻抗,以及所述电源适配器500和所述移动终端之间的充电线线路的通路阻抗,确定所述USB接口是否接触不良。
可选地,作为一个实施例,所述通信电路510还用于向所述移动终端发送第五指令,所述第五指令用于指示所述USB接口接触不良。
图6是本发明实施例的移动终端的示意性框图。图6的移动终端600与电源适配器通过通用串行总线USB接口相连,所述USB接口中的电源线用于为所述移动终端600充电,所述USB接口中的数据线用于所述移动终端600和所述电源适配器进行双向通信,所述移动终端600支持普通充电模式和快速充电模式,其中所述快速充电模式的充电电流大于所述普通充电模式的充电电流,所述移动终端600包括:
通信电路610,用于通过所述USB接口中的数据线与所述电源适配器进行双向通信,以便所述电源适配器确定使用所述快速充电模式为所述移动终端600充电;
充电电路620,用于从所述电源适配器接收所述快速充电模式对应的充电电流,为所述移动终端600内的电池充电。
本发明实施例中,电源适配器并非盲目地增大输出电流进行快速充电,而是需要与移动终端进行双向通信,协商是否可以采用快速充电模式,与现有技术相比,提升了快速充电过程的安全性。
可选地,作为一个实施例,所述通信电路610具体用于接收所述电源适配器发送的第一指令,所述第一指令用于询问所述移动终端600是否开启所述快速充电模式;向所述电源适配器发送所述第一指令的回复指令,所述第一指令的回复指令用于指示所述移动终端600同意开启所述快速充电模式。
可选地,作为一个实施例,所述充电电路620还用于与所述电源适配器之间通过所述普通充电模式充电;所述通信电路610具体用于所述电源适配器确定所述普通充电模式的充电时长大于预设阈值后,接收所述电源适配器发送的所述第一指令。
可选地,作为一个实施例,所述通信电路610还用于通过所述USB接口中的数据线与所述电源适配器进行双向通信,以便所述电源适配器确定所述快速充电模式对应的充电电压。
可选地,作为一个实施例,所述通信电路610具体用于接收所述电源适配器发送的第二指令,所述第二指令用于询问所述电源适配器的当前电压是否适合作为所述快速充电模式的充电电压;向所述电源适配器发送所述第二指令的回复指令,所述第二指令的回复指令用于指示所述电源适配器的当前电压合适、偏高或偏低。
可选地,作为一个实施例,所述通信电路610还用于通过所述USB接口中的数据线与所述电源适配器进行双向通信,以便所述电源适配器确定所述快速充电模式对应的充电电流。
可选地,作为一个实施例,所述通信电路610具体用于接收所述电源适配器发送的第三指令,所述第三指令用于询问所述移动终端600当前支持的最大充电电流;向所述电源适配器发送所述第三指令的回复指令,所述第三指令的回复指令用于指示所述移动终端600当前支持的最大充电电流,以便 所述电源适配器根据所述最大充电电流确定所述快速充电模式对应的充电电流。
可选地,作为一个实施例,所述通信电路610还用于在所述电源适配器使用所述快速充电模式为所述移动终端600充电的过程中,通过所述USB接口中的数据线与所述电源适配器进行双向通信,以便所述电源适配器不断调整所述电源适配器的充电电流。
可选地,作为一个实施例,所述通信电路610具体用于接收所述电源适配器发送的第四指令,所述第四指令用于询问所述移动终端600内的电池的当前电压;向所述电源适配器发送所述第四指令的回复指令,所述第四指令的回复指令用于指示所述移动终端600内的电池的当前电压,以便所述电源适配器根据所述电池的当前电压,不断调整所述电源适配器的充电电流。
可选地,作为一个实施例,所述通信电路610还用于在所述电源适配器使用所述快速充电模式为所述移动终端600充电的过程中,通过所述USB接口中的数据线与所述电源适配器进行双向通信,以便所述电源适配器确定所述USB接口是否接触不良。
可选地,作为一个实施例,所述通信电路610具体用于接收所述电源适配器发送的第四指令,所述第四指令用于询问所述移动终端600内的电池的当前电压;向所述电源适配器发送所述第四指令的回复指令,所述第四指令的回复指令用于指示所述移动终端600内的电池的当前电压,以便所述电源适配器根据所述充电适配器的充电电压和所述电池的当前电压,确定所述USB接口是否接触不良。
可选地,作为一个实施例,所述通信电路610还用于接收所述电源适配器发送的第五指令,所述第五指令用于指示所述USB接口接触不良。
图7是本发明实施例的快速充电方法的示意性流程图。图7的方法可应用于电源适配器,所述电源适配器与移动终端通过通用串行总线USB接口相连,所述USB接口中的电源线用于所述电源适配器为所述移动终端充电,所述USB接口中的数据线用于所述电源适配器和所述移动终端进行双向通信,所述电源适配器支持普通充电模式和快速充电模式,其中所述快速充电模式的充电电流大于所述普通充电模式的充电电流,图7的方法包括:
710、所述电源适配器确定开启所述快速充电模式;
720、所述电源适配器通过第二指令与所述移动终端进行握手通信,以 确定所述快速充电模式对应的充电电压;
730、所述电源适配器通过第三指令与所述移动终端进行握手通信,以确定所述快速充电模式对应的充电电流;
740、所述电源适配器将输出电压和输出电流调整至所述快速充电模式对应的充电电压和充电电流,进入恒流阶段;
750、在所述恒流阶段,所述电源适配器通过第四指令与所述移动终端进行握手通信,以调整所述电源适配器的输出电流,从而以分段恒流的形式为所述移动终端充电。
本发明实施例中,电源适配器并非盲目地增大输出电流进行快速充电,而是需要与移动终端进行双向通信,协商是否可以采用快速充电模式,与现有技术相比,提升了快速充电过程的安全性。
可选地,作为一个实施例,所述电源适配器确定开启所述快速充电模式,包括:所述电源适配器通过第一指令与所述移动终端进行握手通信,以确定开启所述快速充电模式。
可选地,作为一个实施例,所述电源适配器通过第一指令与所述移动终端进行握手通信,以确定开启所述快速充电模式,包括:所述电源适配器向所述移动终端发送所述第一指令,所述第一指令用于询问所述移动终端是否开启所述快速充电模式;所述电源适配器从所述移动终端接收所述第一指令的回复指令;当所述第一指令的回复指令指示所述移动终端同意开启所述快速充电模式时,所述电源适配器确定开启所述快速充电模式。
可选地,作为一个实施例,所述第一指令的回复指令包括用于指示所述移动终端通路阻抗的阻抗信息,所述阻抗信息用于所述电源适配器在所述恒流阶段确定所述USB接口是否接触不良。
可选地,作为一个实施例,图7的方法还可包括:在与所述移动终端连接的过程中,当所述电源适配器检测到所述电源适配器为所述移动终端提供的充电电流在预设的时长内大于或等于预设的电流阈值时,所述电源适配器确认所述移动终端已经完成所述电源适配器的类型的识别;所述电源适配器向所述移动终端发送所述第一指令,包括:在所述电源适配器确认所述移动终端已经识别完所述电源适配器的类型之后,所述电源适配器向所述移动终端发送所述第一指令。
可选地,作为一个实施例,图7的方法还可包括:当所述第一指令的回 复指令指示所述移动终端不同意开启所述快速充电模式时,所述电源适配器重复执行上述充电电流的检测过程和第一指令的握手通信过程,直到所述移动终端同意开启所述快速充电模式或所述充电电流小于所述电流阈值。
可选地,作为一个实施例,所述电源适配器确定开启所述快速充电模式,包括:所述电源适配器从所述移动终端接收询问消息,所述询问消息用于询问所述电源适配器是否支持所述快速充电模式;所述电源适配器向所述移动终端发送应答消息,所述应答消息用于指示所述电源适配器支持所述快速充电模式;所述电源适配器从所述移动终端接收指示消息,所述指示消息用于指示所述电源适配器开启所述快速充电模式。
可选地,作为一个实施例,所述电源适配器通过第二指令与所述移动终端进行握手通信,以确定所述快速充电模式对应的充电电压,包括:所述电源适配器向所述移动终端发送所述第二指令,所述第二指令用于询问所述电源适配器的当前输出电压是否适合作为所述快速充电模式的充电电压;所述电源适配器接收所述移动终端发送的所述第二指令的回复指令,所述第二指令的回复指令用于指示所述电源适配器的当前输出电压合适、偏高或偏低;当所述第二指令的回复指令指示所述电源适配器的当前输出电压合适时,所述电源适配器将所述电源适配器的当前输出电压确定为所述快速充电模式对应的充电电压;当所述第二指令的回复指令指示所述电源适配器的当前输出电压偏高或偏低时,所述电源适配器根据所述第二指令的回复指令,调整所述电源适配器的当前输出电压,重复执行上述基于第二指令的握手通信过程,不断调整所述电源适配器的当前输出电压,直到所述第二指令的回复指令指示所述电源适配器的当前输出电压合适为止。
可选地,作为一个实施例,图7的方法还可包括:所述电源适配器确定基于所述第二指令的握手通信过程的时间长度;当所述时间长度大于预设的时间长度阈值时,所述电源适配器确认所述第二指令的握手通信的过程异常,退出所述快速充电模式的握手通信过程,或重新确定是否开始快速充电模式。
应理解,本发明实施例中的重新确定是否开启快速充电模式是指重新进行快充流程的握手协商过程,如重新开始图3中的阶段1。
可选地,作为一个实施例,所述电源适配器通过第三指令与所述移动终端进行握手通信,以确定所述快速充电模式对应的充电电流,包括:所述电 源适配器向所述移动终端发送所述第三指令,所述第三指令用于询问所述移动终端当前支持的最大充电电流;所述电源适配器接收所述移动终端发送的所述第三指令的回复指令,所述第三指令的回复指令用于指示所述移动终端当前支持的最大充电电流;所述电源适配器根据所述第三指令的回复指令,确定所述快速充电模式的充电电流。
可选地,作为一个实施例,所述电源适配器将输出电流调整至所述快速充电模式对应的充电电流,包括:所述电源适配器通过控制电流调整速度,将输出电流调整至所述快速充电模式对应的充电电流,其中,所述电流调整速度位于预设的电流速度调整范围内。
可选地,作为一个实施例,所述在所述恒流阶段,所述电源适配器通过第四指令与所述移动终端进行握手通信,以调整所述电源适配器的输出电流,包括:在所述恒流阶段,所述电源适配器向所述移动终端发送第四指令,所述第四指令用于询问所述移动终端内的电池的当前电压;所述电源适配器接收所述移动终端发送的所述第四指令的回复指令,所述第四指令的回复指令用于指示所述移动终端内的电池的当前电压;所述电源适配器根据所述电池的当前电压,调整所述电源适配器的输出电流。
可选地,作为一个实施例,所述在所述恒流阶段,所述电源适配器向所述移动终端发送第四指令,所述第四指令用于询问所述移动终端内的电池的当前电压,包括:在所述恒流阶段,所述电源适配器每隔一段预设的时间间隔,向所述移动终端发送一次所述第四指令。
可选地,作为一个实施例,在所述恒流阶段,在电源适配器的输出电流的每次调整过程中,所述电源适配器的输出电流的调整幅度小于或等于所述电源适配器的当前输出电流的5%。
可选地,作为一个实施例,图7的方法还包括:所述电源适配器从所述移动终端接收用于指示所述移动终端的通路阻抗的阻抗信息;在所述恒流阶段,所述电源适配器根据所述电源适配器的当前输出电压和所述电池的当前电压,确定所述电源适配器到所述电池的充电回路阻抗;所述电源适配器根据所述充电回路阻抗、所述移动终端的通路阻抗,以及所述电源适配器和所述移动终端之间的充电线线路的通路阻抗,确定所述USB接口是否接触不良;当所述USB接口接触不良时,所述电源适配器退出所述快速充电模式或重新确定是否开启所述快速充电模式。
可选地,作为一个实施例,图7的方法还包括:当所述USB接口接触不良时,所述电源适配器向所述移动终端发送第五指令,所述第五指令用于指示所述USB接口接触不良,所述电源适配器准备退出快速充电模式或重新确定是否开启所述快速充电模式。
可选地,作为一个实施例,在所述恒流阶段,所述电源适配器和所述移动终端的通信时间间隔小于预设的时间间隔阈值,否则退出所述快速充电模式或重新确定是否开启所述快速充电模式。
可选地,作为一个实施例,所述快速充电模式的停止包括两种停止模式:可恢复的停止模式和不可恢复的停止模式,在所述可恢复的停止模式中,所述电源适配器或所述移动终端重新开启所述快速充电模式,与所述移动终端重新进行握手通信;在所述不可恢复的停止模式中,所述电源适配器或所述移动终端不再开启所述快速充电模式,使用所述普通充电模式为所述移动终端充电,或不再为所述移动终端充电。
可选地,作为一个实施例,所述可恢复的停止模式适用于的情况包括:所述电源适配器和所述移动终端之间出现通信异常或所述移动终端的电池出现异常,所述快速充电模式停止,所述电源适配器重新询问所述移动终端是否同意开启所述快速充电模式,所述移动终端同意重新开启所述快速充电模式;或者,所述不可恢复的停止模式适用的情况包括:所述移动终端的电池充满或所述USB接口接触不良,所述电源适配器重新询问所述移动终端是否开启所述快速充电模式,所述移动终端不同意开启所述快速充电模式。
可选地,作为一个实施例,图7的方法还包括:所述电源适配器确定连接所述电源适配器和所述移动终端的USB接口的数据线是否为支持所述快速充电模式的数据线。
可选地,作为一个实施例,在所述电源适配器和所述移动终端握手通信的任意过程中,当出现通信异常时,停止所述快速充电模式。
可选地,作为一个实施例,在所述电源适配器与所述移动终端通信的过程中,所述电源适配器作为主机,提供用于所述电源适配器和所述移动终端同步的时钟信号。
可选地,作为一个实施例,所述电源适配器通过所述USB接口中的D+数据线提供所述时钟信号,所述电源适配器与所述移动终端通过所述USB接口中的D-数据线进行通信和/或传输数据。
可选地,作为一个实施例,所述电源适配器和所述移动终端之间的通信和/或充电过程是基于开环电流分段恒流VOOC闪充技术或VOOC闪充通信协议进行的。
图8是本发明实施例的快速充电方法的示意性流程图。图8的方法可应用于移动终端,所述移动终端与电源适配器通过通用串行总线USB接口相连,所述USB接口中的电源线用于为所述移动终端充电,所述USB接口中的数据线用于所述移动终端和所述电源适配器进行双向通信,所述移动终端支持普通充电模式和快速充电模式,其中所述快速充电模式的充电电流大于所述普通充电模式的充电电流,图8的方法包括:
810、所述移动终端确定开启所述快速充电模式;
820、所述移动终端通过所述电源适配器发送的第二指令与所述电源适配器进行握手通信,以确定所述快速充电模式对应的充电电压;
830、所述移动终端通过所述电源适配器发送的第三指令与所述电源适配器进行握手通信,以确定所述快速充电模式对应的充电电流;
840、在所述电源适配器将输出电压和输出电流调整至所述快速充电模式对应的充电电压和充电电流,进入恒流阶段之后,所述移动终端通过所述电源适配器发送的第四指令与所述电源适配器进行握手通信,以便所述电源适配器调整输出电流,以分段恒流的形式为所述移动终端充电。
本发明实施例中,电源适配器并非盲目地增大输出电流进行快速充电,而是需要与移动终端进行双向通信,协商是否可以采用快速充电模式,与现有技术相比,提升了快速充电过程的安全性。
可选地,作为一个实施例,所述移动终端确定开启所述快速充电模式,包括:所述移动终端通过所述电源适配器发送的第一指令与所述移动终端进行握手通信,以确定开启所述快速充电模式。
可选地,作为一个实施例,所述移动终端通过所述电源适配器发送的第一指令与所述移动终端进行握手通信,以确定开启所述快速充电模式,包括:所述移动终端从所述电源适配器接收所述第一指令,所述第一指令用于询问所述移动终端是否开启所述快速充电模式;所述移动终端向所述电源适配器发送所述第一指令的回复指令,所述第一指令的回复指令用于指示所述移动终端同意开启所述快速充电模式。
可选地,作为一个实施例,所述第一指令的回复指令包括用于指示所述 移动终端通路阻抗的阻抗信息,所述阻抗信息用于所述电源适配器在所述恒流阶段确定所述USB接口是否接触不良。
可选地,作为一个实施例,图8的方法还可包括:在与所述电源适配器连接的过程中,所述移动终端通过所述USB接口中的D+数据线和D-数据线检测所述电源适配器的类型;所述移动终端从所述电源适配器接收充电电流,所述充电电流大于预设的电流阈值;所述移动终端从所述电源适配器接收所述第一指令,包括:在所述电源适配器检测到所述电源适配器为所述移动终端提供的充电电流在预设的时长内大于或等于所述电流阈值后,所述移动终端从所述电源适配器接收所述第一指令。
可选地,作为一个实施例,所述移动终端确定开启所述快速充电模式,包括:所述移动终端向所述电源适配器发送询问消息,所述询问消息用于询问所述电源适配器是否支持所述快速充电模式;所述移动终端从所述电源适配器接收应答消息,所述应答消息用于指示所述电源适配器支持所述快速充电模式;所述移动终端向所述电源适配器发送指示消息,所述指示消息用于指示所述电源适配器开启所述快速充电模式。
可选地,作为一个实施例,所述移动终端通过所述电源适配器发送的第二指令与所述电源适配器进行握手通信,以确定所述快速充电模式对应的充电电压,包括:所述移动终端从所述电源适配器接收所述第二指令,所述第二指令用于询问所述电源适配器的当前输出电压是否适合作为所述快速充电模式的充电电压;所述移动终端向所述电源适配器发送所述第二指令的回复指令,所述第二指令的回复指令用于指示所述电源适配器的当前输出电压合适、偏高或偏低,以便所述电源适配器根据所述第二指令的回复指令确定所述快速充电模式对应的充电电压。
可选地,作为一个实施例,所述移动终端向所述电源适配器发送所述第二指令的回复指令,包括:当所述移动终端确定所述电源适配器的当前输出电压高于所述移动终端的电池电压,且所述电源适配器的当前输出电压与所述电池电压的压差在预设的压差阈值范围内时,所述移动终端向所述电源适配器发送所述第二指令的回复指令,所述第二指令的回复指令用于指示所述电源适配器的当前输出电压合适。
可选地,作为一个实施例,所述压差阈值在200mV至500mV的范围内。
可选地,作为一个实施例,图8的方法还包括:所述移动终端确定基于 所述第二指令的握手通信过程的时间长度;当所述时间长度大于预设的时间长度阈值时,所述移动终端确认所述第二指令的握手通信的过程异常,退出所述快速充电模式的握手通信过程,或重新确定是否开始快速充电模式。
可选地,作为一个实施例,所述移动终端通过所述电源适配器发送的第三指令与所述电源适配器进行握手通信,以确定所述快速充电模式对应的充电电流,包括:所述移动终端从所述电源适配器接收所述第三指令,所述第三指令用于询问所述移动终端当前支持的最大充电电流;所述移动终端向所述电源适配器发送第三指令的回复指令,所述第三指令的回复指令用于指示所述移动终端当前支持的最大充电电流,以便所述电源适配器根据所述第三指令的回复指令,确定所述快速充电模式对应的充电电流。
可选地,作为一个实施例,所述移动终端通过所述电源适配器发送的第四指令与所述电源适配器进行握手通信,以便所述电源适配器调整输出电流,包括:在所述恒流阶段,所述移动终端从所述电源适配器接收第四指令,所述第四指令用于询问所述移动终端内的电池的当前电压;所述移动终端向所述电源适配器发送所述第四指令的回复指令,所述第四指令的回复指令用于指示所述移动终端内的电池的当前电压,以便所述电源适配器根据所述电池的当前电压,调整所述电源适配器的输出电流。
可选地,作为一个实施例,所述在所述恒流阶段,所述移动终端从所述电源适配器接收第四指令,所述第四指令用于询问所述移动终端内的电池的当前电压,包括:在所述恒流阶段,所述移动终端每隔一段预设的时间间隔,从所述电源适配器接收一次所述第四指令。
可选地,作为一个实施例,在所述恒流阶段,在电源适配器的输出电流的每次调整过程中,所述电源适配器的输出电流的调整幅度小于或等于所述电源适配器的当前输出电流的5%。
可选地,作为一个实施例,图8的方法还可包括:所述移动终端向所述电源适配器发送用于指示所述移动终端的通路阻抗的信息,以便所述电源适配器在所述恒流阶段根据所述通路阻抗确定所述USB接口是否接触不良;当所述电源适配器确定所述USB接口接触不良时,所述移动终端从所述电源适配器接收第五指令,所述第五指令用于指示所述USB接口接触不良,所述电源适配器准备退出快速充电模式或重新确定是否开启所述快速充电模式。
可选地,作为一个实施例,在所述恒流阶段,所述电源适配器和所述移动终端的通信时间间隔小于预设的时间间隔阈值,否则退出所述快速充电模式或重新开启所述快速充电模式。
可选地,作为一个实施例,所述快速充电模式的停止包括两种停止模式:可恢复的停止模式和不可恢复的停止模式,在所述可恢复的停止模式中,所述电源适配器或所述移动终端重新开启所述快速充电模式,与所述移动终端重新进行握手通信;在所述不可恢复的停止模式中,所述电源适配器或所述移动终端不再开启所述快速充电模式,使用所述普通充电模式为所述移动终端充电,或不再为所述移动终端充电。
可选地,作为一个实施例,所述可恢复的停止模式适用于的情况包括:所述电源适配器和所述移动终端之间出现通信异常或所述移动终端的电池出现异常,所述快速充电模式停止,所述电源适配器重新询问所述移动终端是否同意开启所述快速充电模式,所述移动终端同意重新开启所述快速充电模式;或者,所述不可恢复的停止模式适用的情况包括:所述移动终端的电池充满或所述USB接口接触不良,所述电源适配器重新询问所述移动终端是否开启所述快速充电模式,所述移动终端不同意开启所述快速充电模式。
可选地,作为一个实施例,图8的方法还包括:所述移动终端确定连接所述电源适配器和所述移动终端的USB接口的数据线是否为支持所述快速充电模式的数据线。
可选地,作为一个实施例,在所述电源适配器和所述移动终端握手通信的任意过程中,当出现通信异常时,停止所述快速充电模式。
可选地,作为一个实施例,在所述电源适配器与所述移动终端通信的过程中,所述电源适配器作为主机,提供用于所述电源适配器和所述移动终端同步的时钟信号。
可选地,作为一个实施例,所述电源适配器通过所述USB接口中的D+数据线提供所述时钟信号,所述电源适配器与所述移动终端通过所述USB接口中的D-数据线进行通信和/或传输数据。
可选地,作为一个实施例,所述电源适配器和所述移动终端之间的通信和/或充电过程是基于开环电流分段恒流VOOC闪充技术或VOOC闪充通信协议进行的。
上文结合图7和图8,详细描述了本发明实施例的快速充电方法,下文 结合图9至图10,详细描述本发明实施例的电源适配器和移动终端。应理解,图9至图10中的电源适配器和移动终端能够实现图7至图8中的由电源适配器和移动终端执行的各个步骤,为了简洁,适当省略重复的描述。
图9是本发明实施例的电源适配器的示意性框图。图9的电源适配器900与移动终端通过通用串行总线USB接口相连,所述USB接口中的电源线用于所述电源适配器900为所述移动终端充电,所述USB接口中的数据线用于所述电源适配器900和所述移动终端进行双向通信,所述电源适配器900支持普通充电模式和快速充电模式,其中所述快速充电模式的充电电流大于所述普通充电模式的充电电流,所述电源适配器900包括:通信控制电路910(或称通信电路)和充电电路920,
所述通信控制电路910用于确定开启所述快速充电模式;通过第二指令与所述移动终端进行握手通信,以确定所述快速充电模式对应的充电电压;通过第三指令与所述移动终端进行握手通信,以确定所述快速充电模式对应的充电电流;将输出电压和输出电流调整至所述快速充电模式对应的充电电压和充电电流,进入恒流阶段;在所述恒流阶段,通过第四指令与所述移动终端进行握手通信,以调整所述电源适配器的输出电流,从而控制所述充电电路920以分段恒流的形式为所述移动终端充电。
本发明实施例中,电源适配器并非盲目地增大输出电流进行快速充电,而是需要与移动终端进行双向通信,协商是否可以采用快速充电模式,与现有技术相比,提升了快速充电过程的安全性。
可选地,作为一个实施例,所述通信控制电路910具体用于通过第一指令与所述移动终端进行握手通信,以确定开启所述快速充电模式。
可选地,作为一个实施例,所述通信控制电路910具体用于所述电源适配器向所述移动终端发送所述第一指令,所述第一指令用于询问所述移动终端是否开启所述快速充电模式;从所述移动终端接收所述第一指令的回复指令;当所述第一指令的回复指令指示所述移动终端同意开启所述快速充电模式时,确定开启所述快速充电模式。
可选地,作为一个实施例,所述第一指令的回复指令包括用于指示所述移动终端通路阻抗的阻抗信息,所述阻抗信息用于所述电源适配器在所述恒流阶段确定所述USB接口是否接触不良。
可选地,作为一个实施例,所述通信控制电路910具体用于在与所述移 动终端连接的过程中,当所述电源适配器检测到所述电源适配器为所述移动终端提供的充电电流在预设的时长内大于或等于预设的电流阈值时,确认所述移动终端已经完成所述电源适配器的类型的识别;在所述电源适配器确认所述移动终端已经识别完所述电源适配器的类型之后,所述电源适配器向所述移动终端发送所述第一指令。
可选地,作为一个实施例,所述通信控制电路910还用于当所述第一指令的回复指令指示所述移动终端不同意开启所述快速充电模式时,所述电源适配器重复执行上述充电电流的检测过程和第一指令的握手通信过程,直到所述移动终端同意开启所述快速充电模式或所述充电电流小于所述电流阈值。
可选地,作为一个实施例,所述通信控制电路910还用于从所述移动终端接收询问消息,所述询问消息用于询问所述电源适配器是否支持所述快速充电模式;向所述移动终端发送应答消息,所述应答消息用于指示所述电源适配器支持所述快速充电模式;从所述移动终端接收指示消息,所述指示消息用于指示所述电源适配器开启所述快速充电模式。
可选地,作为一个实施例,所述通信控制电路910具体用于向所述移动终端发送所述第二指令,所述第二指令用于询问所述电源适配器的当前输出电压是否适合作为所述快速充电模式的充电电压;接收所述移动终端发送的所述第二指令的回复指令,所述第二指令的回复指令用于指示所述电源适配器的当前输出电压合适、偏高或偏低;当所述第二指令的回复指令指示所述电源适配器的当前输出电压合适时,将所述电源适配器的当前输出电压确定为所述快速充电模式对应的充电电压;当所述第二指令的回复指令指示所述电源适配器的当前输出电压偏高或偏低时,根据所述第二指令的回复指令,调整所述电源适配器的当前输出电压,重复执行上述基于第二指令的握手通信过程,不断调整所述电源适配器的当前输出电压,直到所述第二指令的回复指令指示所述电源适配器的当前输出电压合适为止。
可选地,作为一个实施例,所述通信控制电路910还用于确定基于所述第二指令的握手通信过程的时间长度;当所述时间长度大于预设的时间长度阈值时,确认所述第二指令的握手通信的过程异常,退出所述快速充电模式的握手通信过程,或重新确定是否开始快速充电模式。
可选地,作为一个实施例,所述通信控制电路910具体用于向所述移动 终端发送所述第三指令,所述第三指令用于询问所述移动终端当前支持的最大充电电流;接收所述移动终端发送的所述第三指令的回复指令,所述第三指令的回复指令用于指示所述移动终端当前支持的最大充电电流;根据所述第三指令的回复指令,确定所述快速充电模式的充电电流。
可选地,作为一个实施例,所述通信控制电路910具体用于通过控制电流调整速度,将输出电流调整至所述快速充电模式对应的充电电流,其中,所述电流调整速度位于预设的电流速度调整范围内。
可选地,作为一个实施例,所述通信控制电路910具体用于在所述恒流阶段,所述电源适配器向所述移动终端发送第四指令,所述第四指令用于询问所述移动终端内的电池的当前电压;接收所述移动终端发送的所述第四指令的回复指令,所述第四指令的回复指令用于指示所述移动终端内的电池的当前电压;根据所述电池的当前电压,调整所述电源适配器的输出电流。
可选地,作为一个实施例,所述通信控制电路910具体用于在所述恒流阶段,每隔一段预设的时间间隔,向所述移动终端发送一次所述第四指令。
可选地,作为一个实施例,在所述恒流阶段,在电源适配器的输出电流的每次调整过程中,所述电源适配器的输出电流的调整幅度小于或等于所述电源适配器的当前输出电流的5%。
可选地,作为一个实施例,所述通信控制电路910还用于从所述移动终端接收用于指示所述移动终端的通路阻抗的阻抗信息;在所述恒流阶段,根据所述电源适配器的当前输出电压和所述电池的当前电压,确定所述电源适配器到所述电池的充电回路阻抗;根据所述充电回路阻抗、所述移动终端的通路阻抗,以及所述电源适配器和所述移动终端之间的充电线线路的通路阻抗,确定所述USB接口是否接触不良;当所述USB接口接触不良时,所述电源适配器退出所述快速充电模式或重新确定是否开启所述快速充电模式。
可选地,作为一个实施例,所述通信控制电路910还用于当所述USB接口接触不良时,向所述移动终端发送第五指令,所述第五指令用于指示所述USB接口接触不良,所述电源适配器准备退出快速充电模式或重新确定是否开启所述快速充电模式。
可选地,作为一个实施例,在所述恒流阶段,所述电源适配器和所述移动终端的通信时间间隔小于预设的时间间隔阈值,否则退出所述快速充电模式或重新确定是否开启所述快速充电模式。
可选地,作为一个实施例,所述快速充电模式的停止包括两种停止模式:可恢复的停止模式和不可恢复的停止模式,在所述可恢复的停止模式中,所述电源适配器或所述移动终端重新开启所述快速充电模式,与所述移动终端重新进行握手通信;在所述不可恢复的停止模式中,所述电源适配器或所述移动终端不再开启所述快速充电模式,使用所述普通充电模式为所述移动终端充电,或不再为所述移动终端充电。
可选地,作为一个实施例,所述可恢复的停止模式适用于的情况包括:所述电源适配器和所述移动终端之间出现通信异常或所述移动终端的电池出现异常,所述快速充电模式停止,所述电源适配器重新询问所述移动终端是否同意开启所述快速充电模式,所述移动终端同意重新开启所述快速充电模式;或者,所述不可恢复的停止模式适用的情况包括:所述移动终端的电池充满或所述USB接口接触不良,所述电源适配器重新询问所述移动终端是否开启所述快速充电模式,所述移动终端不同意开启所述快速充电模式。
可选地,作为一个实施例,所述通信控制电路910还用于确定连接所述电源适配器和所述移动终端的USB接口的数据线是否为支持所述快速充电模式的数据线。
可选地,作为一个实施例,在所述电源适配器和所述移动终端握手通信的任意过程中,当出现通信异常时,停止所述快速充电模式。
可选地,作为一个实施例,在所述电源适配器与所述移动终端通信的过程中,所述电源适配器作为主机,提供用于所述电源适配器和所述移动终端同步的时钟信号。
可选地,作为一个实施例,所述电源适配器通过所述USB接口中的D+数据线提供所述时钟信号,所述电源适配器与所述移动终端通过所述USB接口中的D-数据线进行通信和/或传输数据。
可选地,作为一个实施例,所述电源适配器和所述移动终端之间的通信和/或充电过程是基于开环电流分段恒流VOOC闪充技术或VOOC闪充通信协议进行的。
图10是本发明实施例的移动终端的示意性框图。图10的移动终端1000与电源适配器通过通用串行总线USB接口相连,所述USB接口中的电源线用于为所述移动终端1000充电,所述USB接口中的数据线用于所述移动终端1000和所述电源适配器进行双向通信,所述移动终端1000支持普通充电 模式和快速充电模式,其中所述快速充电模式的充电电流大于所述普通充电模式的充电电流,所述移动终端1000包括:通信控制电路1010(或称通信电路)和充电电路1020,
所述通信控制电路1010用于确定开启所述快速充电模式;通过所述电源适配器发送的第二指令与所述电源适配器进行握手通信,以确定所述快速充电模式对应的充电电压;通过所述电源适配器发送的第三指令与所述电源适配器进行握手通信,以确定所述快速充电模式对应的充电电流;在所述电源适配器将输出电压和输出电流调整至所述快速充电模式对应的充电电压和充电电流,进入恒流阶段之后,通过所述电源适配器发送的第四指令与所述电源适配器进行握手通信,以便所述电源适配器调整输出电流,以分段恒流的形式通过所述充电电路1020为所述移动终端充电。
本发明实施例中,电源适配器并非盲目地增大输出电流进行快速充电,而是需要与移动终端进行双向通信,协商是否可以采用快速充电模式,与现有技术相比,提升了快速充电过程的安全性。
可选地,作为一个实施例,所述通信控制电路1010具体用于通过所述电源适配器发送的第一指令与所述移动终端进行握手通信,以确定开启所述快速充电模式。
可选地,作为一个实施例,所述通信控制电路1010具体用于从所述电源适配器接收所述第一指令,所述第一指令用于询问所述移动终端是否开启所述快速充电模式;向所述电源适配器发送所述第一指令的回复指令,所述第一指令的回复指令用于指示所述移动终端同意开启所述快速充电模式。
可选地,作为一个实施例,所述第一指令的回复指令包括用于指示所述移动终端通路阻抗的阻抗信息,所述阻抗信息用于所述电源适配器在所述恒流阶段确定所述USB接口是否接触不良。
可选地,作为一个实施例,所述通信控制电路1010还用于在与所述电源适配器连接的过程中,通过所述USB接口中的D+数据线和D-数据线检测所述电源适配器的类型;从所述电源适配器接收充电电流,所述充电电流大于预设的电流阈值;所述通信控制电路1010具体用于在所述电源适配器检测到所述电源适配器为所述移动终端提供的充电电流在预设的时长内大于或等于所述电流阈值后,从所述电源适配器接收所述第一指令。
可选地,作为一个实施例,所述通信控制电路1010具体用于向所述电 源适配器发送询问消息,所述询问消息用于询问所述电源适配器是否支持所述快速充电模式;从所述电源适配器接收应答消息,所述应答消息用于指示所述电源适配器支持所述快速充电模式;向所述电源适配器发送指示消息,所述指示消息用于指示所述电源适配器开启所述快速充电模式。
可选地,作为一个实施例,所述通信控制电路1010具体用于从所述电源适配器接收所述第二指令,所述第二指令用于询问所述电源适配器的当前输出电压是否适合作为所述快速充电模式的充电电压;向所述电源适配器发送所述第二指令的回复指令,所述第二指令的回复指令用于指示所述电源适配器的当前输出电压合适、偏高或偏低,以便所述电源适配器根据所述第二指令的回复指令确定所述快速充电模式对应的充电电压。
可选地,作为一个实施例,所述通信控制电路1010具体用于当所述移动终端确定所述电源适配器的当前输出电压高于所述移动终端的电池电压,且所述电源适配器的当前输出电压与所述电池电压的压差在预设的压差阈值范围内时,向所述电源适配器发送所述第二指令的回复指令,所述第二指令的回复指令用于指示所述电源适配器的当前输出电压合适。
可选地,作为一个实施例,所述压差阈值在200mV至500mV的范围内。
可选地,作为一个实施例,所述通信控制电路1010还用于确定基于所述第二指令的握手通信过程的时间长度;当所述时间长度大于预设的时间长度阈值时,确认所述第二指令的握手通信的过程异常,退出所述快速充电模式的握手通信过程,或重新确定是否开始快速充电模式。
可选地,作为一个实施例,所述通信控制电路1010具体用于从所述电源适配器接收所述第三指令,所述第三指令用于询问所述移动终端当前支持的最大充电电流;向所述电源适配器发送第三指令的回复指令,所述第三指令的回复指令用于指示所述移动终端当前支持的最大充电电流,以便所述电源适配器根据所述第三指令的回复指令,确定所述快速充电模式对应的充电电流。
可选地,作为一个实施例,所述通信控制电路1010具体用于在所述恒流阶段,所述移动终端从所述电源适配器接收第四指令,所述第四指令用于询问所述移动终端内的电池的当前电压;向所述电源适配器发送所述第四指令的回复指令,所述第四指令的回复指令用于指示所述移动终端内的电池的当前电压,以便所述电源适配器根据所述电池的当前电压,调整所述电源适 配器的输出电流。
可选地,作为一个实施例,所述通信控制电路1010具体用于在所述恒流阶段,每隔一段预设的时间间隔,从所述电源适配器接收一次所述第四指令。
可选地,作为一个实施例,在所述恒流阶段,在电源适配器的输出电流的每次调整过程中,所述电源适配器的输出电流的调整幅度小于或等于所述电源适配器的当前输出电流的5%。
可选地,作为一个实施例,所述通信控制电路1010还用于向所述电源适配器发送用于指示所述移动终端的通路阻抗的信息,以便所述电源适配器在所述恒流阶段根据所述通路阻抗确定所述USB接口是否接触不良;当所述电源适配器确定所述USB接口接触不良时,从所述电源适配器接收第五指令,所述第五指令用于指示所述USB接口接触不良,所述电源适配器准备退出快速充电模式或重新确定是否开启所述快速充电模式。
可选地,作为一个实施例,在所述恒流阶段,所述电源适配器和所述移动终端的通信时间间隔小于预设的时间间隔阈值,否则退出所述快速充电模式或重新开启所述快速充电模式。
可选地,作为一个实施例,所述快速充电模式的停止包括两种停止模式:可恢复的停止模式和不可恢复的停止模式,在所述可恢复的停止模式中,所述电源适配器或所述移动终端重新开启所述快速充电模式,与所述移动终端重新进行握手通信;在所述不可恢复的停止模式中,所述电源适配器或所述移动终端不再开启所述快速充电模式,使用所述普通充电模式为所述移动终端充电,或不再为所述移动终端充电。
可选地,作为一个实施例,所述可恢复的停止模式适用于的情况包括:所述电源适配器和所述移动终端之间出现通信异常或所述移动终端的电池出现异常,所述快速充电模式停止,所述电源适配器重新询问所述移动终端是否同意开启所述快速充电模式,所述移动终端同意重新开启所述快速充电模式;或者,所述不可恢复的停止模式适用的情况包括:所述移动终端的电池充满或所述USB接口接触不良,所述电源适配器重新询问所述移动终端是否开启所述快速充电模式,所述移动终端不同意开启所述快速充电模式。
可选地,作为一个实施例,所述通信控制电路1010还用于确定连接所述电源适配器和所述移动终端的USB接口的数据线是否为支持所述快速充 电模式的数据线。
可选地,作为一个实施例,在所述电源适配器和所述移动终端握手通信的任意过程中,当出现通信异常时,停止所述快速充电模式。
可选地,作为一个实施例,在所述电源适配器与所述移动终端通信的过程中,所述电源适配器作为主机,提供用于所述电源适配器和所述移动终端同步的时钟信号。
可选地,作为一个实施例,所述电源适配器通过所述USB接口中的D+数据线提供所述时钟信号,所述电源适配器与所述移动终端通过所述USB接口中的D-数据线进行通信和/或传输数据。
可选地,作为一个实施例,所述电源适配器和所述移动终端之间的通信和/或充电过程是基于开环电流分段恒流VOOC闪充技术或VOOC闪充通信协议进行的。
本领域普通技术人员可以意识到,结合本文中所公开的实施例描述的各示例的单元及算法步骤,能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行,取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能,但是这种实现不应认为超出本发明的范围。
所属领域的技术人员可以清楚地了解到,为描述的方便和简洁,上述描述的系统、装置和单元的具体工作过程,可以参考前述方法实施例中的对应过程,在此不再赘述。
在本申请所提供的几个实施例中,应该理解到,所揭露的系统、装置和方法,可以通过其它的方式实现。例如,以上所描述的装置实施例仅仅是示意性的,例如,所述单元的划分,仅仅为一种逻辑功能划分,实际实现时可以有另外的划分方式,例如多个单元或组件可以结合或者可以集成到另一个系统,或一些特征可以忽略,或不执行。另一点,所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口,装置或单元的间接耦合或通信连接,可以是电性,机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的,作为单元显示的部件可以是或者也可以不是物理单元,即可以位于一个地方,或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外,在本发明各个实施例中的各功能单元可以集成在一个处理单元中,也可以是各个单元单独物理存在,也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时,可以存储在一个计算机可读取存储介质中。基于这样的理解,本发明的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来,该计算机软件产品存储在一个存储介质中,包括若干指令用以使得一台计算机设备(可以是个人计算机,服务器,或者网络设备等)执行本发明各个实施例所述方法的全部或部分步骤。而前述的存储介质包括:U盘、移动硬盘、只读存储器(ROM,Read-Only Memory)、随机存取存储器(RAM,Random Access Memory)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述,仅为本发明的具体实施方式,但本发明的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本发明揭露的技术范围内,可轻易想到变化或替换,都应涵盖在本发明的保护范围之内。因此,本发明的保护范围应所述以权利要求的保护范围为准。

Claims (144)

  1. 一种快速充电方法,其特征在于,所述方法应用于电源适配器,所述电源适配器与移动终端通过通用串行总线USB接口相连,所述USB接口中的电源线用于所述电源适配器为所述移动终端充电,所述USB接口中的数据线用于所述电源适配器和所述移动终端进行双向通信,所述电源适配器支持普通充电模式和快速充电模式,其中所述快速充电模式的充电电流大于所述普通充电模式的充电电流,所述方法包括:
    所述电源适配器通过所述USB接口中的数据线与所述移动终端进行双向通信,以确定使用所述快速充电模式为所述移动终端充电;
    所述电源适配器将充电电流调整至所述快速充电模式对应的充电电流,为所述移动终端充电。
  2. 如权利要求1所述的方法,其特征在于,所述电源适配器通过所述USB接口中的数据线与所述移动终端进行双向通信,以确定使用所述快速充电模式为所述移动终端充电,包括:
    所述电源适配器向所述移动终端发送第一指令,所述第一指令用于询问所述移动终端是否开启所述快速充电模式;
    所述电源适配器从所述移动终端接收所述第一指令的回复指令,所述第一指令的回复指令用于指示所述移动终端同意开启所述快速充电模式。
  3. 如权利要求2所述的方法,其特征在于,在所述电源适配器向所述移动终端发送第一指令之前,所述方法还包括:
    所述电源适配器与所述移动终端之间通过所述普通充电模式充电;
    所述电源适配器向所述移动终端发送第一指令,包括:
    所述电源适配器确定所述普通充电模式的充电时长大于预设阈值后,向所述移动终端发送所述第一指令。
  4. 如权利要求1-3中任一项所述的方法,其特征在于,在所述电源适配器将充电电流调整至所述快速充电模式对应的充电电流,为所述移动终端充电之前,所述方法包括:
    所述电源适配器通过所述USB接口中的数据线与所述移动终端进行双向通信,以确定所述快速充电模式对应的充电电压;
    所述电源适配器将充电电压调整至所述快速充电模式对应的充电电压。
  5. 如权利要求4所述的方法,其特征在于,所述电源适配器通过所述 USB接口中的数据线与所述移动终端进行双向通信,以确定所述快速充电模式对应的充电电压,包括:
    所述电源适配器向所述移动终端发送第二指令,所述第二指令用于询问所述电源适配器的当前电压是否适合作为所述快速充电模式的充电电压;
    所述电源适配器接收所述移动终端发送的所述第二指令的回复指令,所述第二指令的回复指令用于指示所述电源适配器的当前电压合适、偏高或偏低;
    所述电源适配器根据所述第二指令的回复指令,确定所述快速充电模式的充电电压。
  6. 如权利要求1-5中任一项所述的方法,其特征在于,在所述电源适配器将充电电流调整至所述快速充电模式对应的充电电流,为所述移动终端充电之前,所述方法包括:
    所述电源适配器通过所述USB接口中的数据线与所述移动终端进行双向通信,以确定所述快速充电模式对应的充电电流。
  7. 如权利要求6所述的方法,其特征在于,所述电源适配器通过所述USB接口中的数据线与所述移动终端进行双向通信,以确定所述快速充电模式对应的充电电流,包括:
    所述电源适配器向所述移动终端发送第三指令,所述第三指令用于询问所述移动终端当前支持的最大充电电流;
    所述电源适配器接收所述移动终端发送的所述第三指令的回复指令,所述第三指令的回复指令用于指示所述移动终端当前支持的最大充电电流;
    所述电源适配器根据所述第三指令的回复指令,确定所述快速充电模式的充电电流。
  8. 如权利要求1-7中任一项所述的方法,其特征在于,所述方法还包括:
    在所述电源适配器使用所述快速充电模式为所述移动终端充电的过程中,所述电源适配器通过所述USB接口中的数据线与所述移动终端进行双向通信,以不断调整所述电源适配器的充电电流。
  9. 如权利要求8所述的方法,其特征在于,所述电源适配器通过所述USB接口中的数据线与所述移动终端进行双向通信,以不断调整所述电源适配器的充电电流,包括:
    所述电源适配器向所述移动终端发送第四指令,所述第四指令用于询问所述移动终端内的电池的当前电压;
    所述电源适配器接收所述移动终端发送的所述第四指令的回复指令,所述第四指令的回复指令用于指示所述移动终端内的电池的当前电压;
    所述电源适配器根据所述电池的当前电压,调整所述充电电流。
  10. 如权利要求9所述的方法,其特征在于,所述电源适配器根据所述电池的当前电压,调整所述充电电流,包括:
    所述电源适配器根据所述电池的当前电压,以及预设的电池电压值和充电电流值的对应关系,将所述电源适配器的充电电流调整至所述电池的当前电压对应的充电电流值。
  11. 如权利要求1-10中任一项所述的方法,其特征在于,所述方法还包括:
    在所述电源适配器使用所述快速充电模式为所述移动终端充电的过程中,所述电源适配器通过所述USB接口中的数据线与所述移动终端进行双向通信,以确定所述USB接口是否接触不良;
    当确定所述USB接口接触不良时,所述电源适配器退出所述快速充电模式。
  12. 如权利要求11所述的方法,其特征在于,在所述电源适配器通过所述USB接口中的数据线与所述移动终端进行双向通信,以确定所述USB接口是否接触不良之前,所述方法还包括:
    所述电源适配器从所述移动终端接收用于指示所述移动终端的通路阻抗的信息;
    所述电源适配器通过所述USB接口中的数据线与所述移动终端进行双向通信,以确定所述USB接口是否接触不良,包括:
    所述电源适配器向所述移动终端发送第四指令,所述第四指令用于询问所述移动终端内的电池的电压;
    所述电源适配器接收所述移动终端发送的所述第四指令的回复指令,所述第四指令的回复指令用于指示所述移动终端内的电池的电压;
    所述电源适配器根据所述电源适配器的充电电压和所述电池的电压,确定所述电源适配器到所述电池的通路阻抗;
    所述电源适配器根据所述电源适配器到所述电池的通路阻抗、所述移动 终端的通路阻抗,以及所述电源适配器和所述移动终端之间的充电线线路的通路阻抗,确定所述USB接口是否接触不良。
  13. 如权利要求11或12所述的方法,其特征在于,在所述电源适配器退出所述快速充电模式之前,所述方法还包括:
    所述电源适配器向所述移动终端发送第五指令,所述第五指令用于指示所述USB接口接触不良。
  14. 一种快速充电方法,其特征在于,所述方法应用于移动终端,所述移动终端与电源适配器通过通用串行总线USB接口相连,所述USB接口中的电源线用于为所述移动终端充电,所述USB接口中的数据线用于所述移动终端和所述电源适配器进行双向通信,所述移动终端支持普通充电模式和快速充电模式,其中所述快速充电模式的充电电流大于所述普通充电模式的充电电流,所述方法包括:
    所述移动终端通过所述USB接口中的数据线与所述电源适配器进行双向通信,以便所述电源适配器确定使用所述快速充电模式为所述移动终端充电;
    所述移动终端从所述电源适配器接收所述快速充电模式对应的充电电流,为所述移动终端内的电池充电。
  15. 如权利要求14所述的方法,其特征在于,所述移动终端通过所述USB接口中的数据线与所述电源适配器进行双向通信,以便所述电源适配器确定使用所述快速充电模式为所述移动终端充电,包括:
    所述移动终端接收所述电源适配器发送的第一指令,所述第一指令用于询问所述移动终端是否开启所述快速充电模式;
    所述移动终端向所述电源适配器发送所述第一指令的回复指令,所述第一指令的回复指令用于指示所述移动终端同意开启所述快速充电模式。
  16. 如权利要求15所述的方法,其特征在于,在所述移动终端接收所述电源适配器发送的第一指令之前,所述方法还包括:
    所述移动终端与所述电源适配器之间通过所述普通充电模式充电;
    所述移动终端接收所述电源适配器发送的第一指令,包括:
    所述电源适配器确定所述普通充电模式的充电时长大于预设阈值后,所述移动终端接收所述电源适配器发送的所述第一指令。
  17. 如权利要求14-16中任一项所述的方法,其特征在于,在所述移动 终端从所述电源适配器接收所述快速充电模式对应的充电电流,为所述移动终端内的电池充电之前,所述方法包括:
    所述移动终端通过所述USB接口中的数据线与所述电源适配器进行双向通信,以便所述电源适配器确定所述快速充电模式对应的充电电压。
  18. 如权利要求17所述的方法,其特征在于,所述移动终端通过所述USB接口中的数据线与所述电源适配器进行双向通信,以便所述电源适配器确定所述快速充电模式对应的充电电压,包括:
    所述移动终端接收所述电源适配器发送的第二指令,所述第二指令用于询问所述电源适配器的当前电压是否适合作为所述快速充电模式的充电电压;
    所述移动终端向所述电源适配器发送所述第二指令的回复指令,所述第二指令的回复指令用于指示所述电源适配器的当前电压合适、偏高或偏低。
  19. 如权利要求14-18中任一项所述的方法,其特征在于,在所述移动终端从所述电源适配器接收所述快速充电模式对应的充电电流,为所述移动终端内的电池充电之前,所述方法包括:
    所述移动终端通过所述USB接口中的数据线与所述电源适配器进行双向通信,以便所述电源适配器确定所述快速充电模式对应的充电电流。
  20. 如权利要求19所述的方法,其特征在于,所述移动终端通过所述USB接口中的数据线与所述电源适配器进行双向通信,以便所述电源适配器确定所述快速充电模式对应的充电电流,包括:
    所述移动终端接收所述电源适配器发送的第三指令,所述第三指令用于询问所述移动终端当前支持的最大充电电流;
    所述移动终端向所述电源适配器发送所述第三指令的回复指令,所述第三指令的回复指令用于指示所述移动终端当前支持的最大充电电流,以便所述电源适配器根据所述最大充电电流确定所述快速充电模式对应的充电电流。
  21. 如权利要求14-20中任一项所述的方法,其特征在于,所述方法还包括:
    在所述电源适配器使用所述快速充电模式为所述移动终端充电的过程中,所述移动终端通过所述USB接口中的数据线与所述电源适配器进行双向通信,以便所述电源适配器不断调整所述电源适配器的充电电流。
  22. 如权利要求21所述的方法,其特征在于,所述移动终端通过所述USB接口中的数据线与所述电源适配器进行双向通信,以便所述电源适配器不断调整所述电源适配器的充电电流,包括:
    所述移动终端接收所述电源适配器发送的第四指令,所述第四指令用于询问所述移动终端内的电池的当前电压;
    所述移动终端向所述电源适配器发送所述第四指令的回复指令,所述第四指令的回复指令用于指示所述移动终端内的电池的当前电压,以便所述电源适配器根据所述电池的当前电压,不断调整所述电源适配器的充电电流。
  23. 如权利要求14-22中任一项所述的方法,其特征在于,所述方法还包括:
    在所述电源适配器使用所述快速充电模式为所述移动终端充电的过程中,所述移动终端通过所述USB接口中的数据线与所述电源适配器进行双向通信,以便所述电源适配器确定所述USB接口是否接触不良。
  24. 如权利要求23所述的方法,其特征在于,所述移动终端通过所述USB接口中的数据线与所述电源适配器进行双向通信,以便所述电源适配器确定所述USB接口是否接触不良,包括:
    所述移动终端接收所述电源适配器发送的第四指令,所述第四指令用于询问所述移动终端内的电池的当前电压;
    所述移动终端向所述电源适配器发送所述第四指令的回复指令,所述第四指令的回复指令用于指示所述移动终端内的电池的当前电压,以便所述电源适配器根据所述充电适配器的充电电压和所述电池的当前电压,确定所述USB接口是否接触不良。
  25. 如权利要求24所述的方法,其特征在于,所述方法还包括:
    所述移动终端接收所述电源适配器发送的第五指令,所述第五指令用于指示所述USB接口接触不良。
  26. 一种电源适配器,其特征在于,所述电源适配器与移动终端通过通用串行总线USB接口相连,所述USB接口中的电源线用于所述电源适配器为所述移动终端充电,所述USB接口中的数据线用于所述电源适配器和所述移动终端进行双向通信,所述电源适配器支持普通充电模式和快速充电模式,其中所述快速充电模式的充电电流大于所述普通充电模式的充电电流,所述电源适配器包括:
    通信单元,用于通过所述USB接口中的数据线与所述移动终端进行双向通信,以确定使用所述快速充电模式为所述移动终端充电;
    电流调整单元,用于将充电电流调整至所述快速充电模式对应的充电电流,为所述移动终端充电。
  27. 如权利要求26所述的电源适配器,其特征在于,所述通信单元具体用于向所述移动终端发送第一指令,所述第一指令用于询问所述移动终端是否开启所述快速充电模式;从所述移动终端接收所述第一指令的回复指令,所述第一指令的回复指令用于指示所述移动终端同意开启所述快速充电模式。
  28. 如权利要求27所述的电源适配器,其特征在于,所述电源适配器还包括:
    功率转换单元,用于与所述移动终端之间通过所述普通充电模式充电;
    所述通信单元具体用于确定所述普通充电模式的充电时长大于预设阈值后,向所述移动终端发送所述第一指令。
  29. 如权利要求26-28中任一项所述的电源适配器,其特征在于,所述通信单元还用于通过所述USB接口中的数据线与所述移动终端进行双向通信,以确定所述快速充电模式对应的充电电压;
    所述电源适配器还包括:
    电压调整单元,用于将充电电压调整至所述快速充电模式对应的充电电压。
  30. 如权利要求29所述的电源适配器,其特征在于,所述通信单元还用于向所述移动终端发送第二指令,所述第二指令用于询问所述电源适配器的当前电压是否适合作为所述快速充电模式的充电电压;接收所述移动终端发送的所述第二指令的回复指令,所述第二指令的回复指令用于指示所述电源适配器的当前电压合适、偏高或偏低;所述电源调整单元具体用于根据所述第二指令的回复指令,确定所述快速充电模式的充电电压。
  31. 如权利要求26-30中任一项所述的电源适配器,其特征在于,所述通信单元具体用于通过所述USB接口中的数据线与所述移动终端进行双向通信,以确定所述快速充电模式对应的充电电流。
  32. 如权利要求31所述的电源适配器,其特征在于,所述通信单元具体用于向所述移动终端发送第三指令,所述第三指令用于询问所述移动终端 当前支持的最大充电电流;接收所述移动终端发送的所述第三指令的回复指令,所述第三指令的回复指令用于指示所述移动终端当前支持的最大充电电流;根据所述第三指令的回复指令,确定所述快速充电模式的充电电流。
  33. 如权利要求26-32中任一项所述的电源适配器,其特征在于,所述通信单元还用于在所述电源适配器使用所述快速充电模式为所述移动终端充电的过程中,通过所述USB接口中的数据线与所述移动终端进行双向通信,以不断调整所述电源适配器的充电电流。
  34. 如权利要求33所述的电源适配器,其特征在于,所述通信单元具体用于向所述移动终端发送第四指令,所述第四指令用于询问所述移动终端内的电池的当前电压;接收所述移动终端发送的所述第四指令的回复指令,所述第四指令的回复指令用于指示所述移动终端内的电池的当前电压;所述电流调整单元具体用于根据所述电池的当前电压,调整所述充电电流。
  35. 如权利要求34所述的电源适配器,其特征在于,所述电流调整单元具体用于根据所述电池的当前电压,以及预设的电池电压值和充电电流值的对应关系,将所述电源适配器的充电电流调整至所述电池的当前电压对应的充电电流值。
  36. 如权利要求26-35中任一项所述的电源适配器,其特征在于,所述通信单元还用于在所述电源适配器使用所述快速充电模式为所述移动终端充电的过程中,通过所述USB接口中的数据线与所述移动终端进行双向通信,以确定所述USB接口是否接触不良;当确定所述USB接口接触不良时,退出所述快速充电模式。
  37. 如权利要求36所述的电源适配器,其特征在于,所述通信单元具体用于从所述移动终端接收用于指示所述移动终端的通路阻抗的信息;接收所述移动终端发送的所述第四指令的回复指令,所述第四指令的回复指令用于指示所述移动终端内的电池的电压;根据所述电源适配器的充电电压和所述电池的电压,确定所述电源适配器到所述电池的通路阻抗;根据所述电源适配器到所述电池的通路阻抗、所述移动终端的通路阻抗,以及所述电源适配器和所述移动终端之间的充电线线路的通路阻抗,确定所述USB接口是否接触不良。
  38. 如权利要求36或37所述的电源适配器,其特征在于,所述通信单元还用于向所述移动终端发送第五指令,所述第五指令用于指示所述USB 接口接触不良。
  39. 一种移动终端,其特征在于,所述移动终端与电源适配器通过通用串行总线USB接口相连,所述USB接口中的电源线用于为所述移动终端充电,所述USB接口中的数据线用于所述移动终端和所述电源适配器进行双向通信,所述移动终端支持普通充电模式和快速充电模式,其中所述快速充电模式的充电电流大于所述普通充电模式的充电电流,所述移动终端包括:
    通信单元,用于通过所述USB接口中的数据线与所述电源适配器进行双向通信,以便所述电源适配器确定使用所述快速充电模式为所述移动终端充电;
    充电单元,用于从所述电源适配器接收所述快速充电模式对应的充电电流,为所述移动终端内的电池充电。
  40. 如权利要求39所述的移动终端,其特征在于,所述通信单元具体用于接收所述电源适配器发送的第一指令,所述第一指令用于询问所述移动终端是否开启所述快速充电模式;向所述电源适配器发送所述第一指令的回复指令,所述第一指令的回复指令用于指示所述移动终端同意开启所述快速充电模式。
  41. 如权利要求40所述的移动终端,其特征在于,所述充电单元还用于与所述电源适配器之间通过所述普通充电模式充电;
    所述通信单元具体用于所述电源适配器确定所述普通充电模式的充电时长大于预设阈值后,接收所述电源适配器发送的所述第一指令。
  42. 如权利要求39-41中任一项所述的移动终端,其特征在于,所述通信单元还用于通过所述USB接口中的数据线与所述电源适配器进行双向通信,以便所述电源适配器确定所述快速充电模式对应的充电电压。
  43. 如权利要求42所述的移动终端,其特征在于,所述通信单元具体用于接收所述电源适配器发送的第二指令,所述第二指令用于询问所述电源适配器的当前电压是否适合作为所述快速充电模式的充电电压;向所述电源适配器发送所述第二指令的回复指令,所述第二指令的回复指令用于指示所述电源适配器的当前电压合适、偏高或偏低。
  44. 如权利要求39-43中任一项所述的移动终端,其特征在于,所述通信单元还用于通过所述USB接口中的数据线与所述电源适配器进行双向通信,以便所述电源适配器确定所述快速充电模式对应的充电电流。
  45. 如权利要求44所述的移动终端,其特征在于,所述通信单元具体用于接收所述电源适配器发送的第三指令,所述第三指令用于询问所述移动终端当前支持的最大充电电流;向所述电源适配器发送所述第三指令的回复指令,所述第三指令的回复指令用于指示所述移动终端当前支持的最大充电电流,以便所述电源适配器根据所述最大充电电流确定所述快速充电模式对应的充电电流。
  46. 如权利要求39-45中任一项所述的移动终端,其特征在于,所述通信单元还用于在所述电源适配器使用所述快速充电模式为所述移动终端充电的过程中,通过所述USB接口中的数据线与所述电源适配器进行双向通信,以便所述电源适配器不断调整所述电源适配器的充电电流。
  47. 如权利要求46所述的移动终端,其特征在于,所述通信单元具体用于接收所述电源适配器发送的第四指令,所述第四指令用于询问所述移动终端内的电池的当前电压;向所述电源适配器发送所述第四指令的回复指令,所述第四指令的回复指令用于指示所述移动终端内的电池的当前电压,以便所述电源适配器根据所述电池的当前电压,不断调整所述电源适配器的充电电流。
  48. 如权利要求39-47中任一项所述的移动终端,其特征在于,所述通信单元还用于在所述电源适配器使用所述快速充电模式为所述移动终端充电的过程中,通过所述USB接口中的数据线与所述电源适配器进行双向通信,以便所述电源适配器确定所述USB接口是否接触不良。
  49. 如权利要求48所述的移动终端,其特征在于,所述通信单元具体用于接收所述电源适配器发送的第四指令,所述第四指令用于询问所述移动终端内的电池的当前电压;向所述电源适配器发送所述第四指令的回复指令,所述第四指令的回复指令用于指示所述移动终端内的电池的当前电压,以便所述电源适配器根据所述充电适配器的充电电压和所述电池的当前电压,确定所述USB接口是否接触不良。
  50. 如权利要求49所述的移动终端,其特征在于,所述通信单元还用于接收所述电源适配器发送的第五指令,所述第五指令用于指示所述USB接口接触不良。
  51. 一种快速充电方法,其特征在于,所述方法应用于电源适配器,所述电源适配器与移动终端通过通用串行总线USB接口相连,所述USB接口 中的电源线用于所述电源适配器为所述移动终端充电,所述USB接口中的数据线用于所述电源适配器和所述移动终端进行双向通信,所述电源适配器支持普通充电模式和快速充电模式,其中所述快速充电模式的充电电流大于所述普通充电模式的充电电流,所述方法包括:
    所述电源适配器确定开启所述快速充电模式;
    所述电源适配器通过第二指令与所述移动终端进行握手通信,以确定所述快速充电模式对应的充电电压;
    所述电源适配器通过第三指令与所述移动终端进行握手通信,以确定所述快速充电模式对应的充电电流;
    所述电源适配器将输出电压和输出电流调整至所述快速充电模式对应的充电电压和充电电流,进入恒流阶段;
    在所述恒流阶段,所述电源适配器通过第四指令与所述移动终端进行握手通信,以调整所述电源适配器的输出电流,从而以分段恒流的形式为所述移动终端充电。
  52. 如权利要求51所述的方法,其特征在于,所述电源适配器确定开启所述快速充电模式,包括:
    所述电源适配器通过第一指令与所述移动终端进行握手通信,以确定开启所述快速充电模式。
  53. 如权利要求52所述的方法,其特征在于,所述电源适配器通过第一指令与所述移动终端进行握手通信,以确定开启所述快速充电模式,包括:
    所述电源适配器向所述移动终端发送所述第一指令,所述第一指令用于询问所述移动终端是否开启所述快速充电模式;
    所述电源适配器从所述移动终端接收所述第一指令的回复指令;
    当所述第一指令的回复指令指示所述移动终端同意开启所述快速充电模式时,所述电源适配器确定开启所述快速充电模式。
  54. 如权利要求53所述的方法,其特征在于,所述第一指令的回复指令包括用于指示所述移动终端通路阻抗的阻抗信息,所述阻抗信息用于所述电源适配器在所述恒流阶段确定所述USB接口是否接触不良。
  55. 如权利要求53所述的方法,其特征在于,所述方法还包括:
    在与所述移动终端连接的过程中,当所述电源适配器检测到所述电源适配器为所述移动终端提供的充电电流在预设的时长内大于或等于预设的电 流阈值时,所述电源适配器确认所述移动终端已经完成所述电源适配器的类型的识别;
    所述电源适配器向所述移动终端发送所述第一指令,包括:
    在所述电源适配器确认所述移动终端已经识别完所述电源适配器的类型之后,所述电源适配器向所述移动终端发送所述第一指令。
  56. 如权利要求55所述的方法,其特征在于,所述方法还包括:
    当所述第一指令的回复指令指示所述移动终端不同意开启所述快速充电模式时,所述电源适配器重复执行上述充电电流的检测过程和第一指令的握手通信过程,直到所述移动终端同意开启所述快速充电模式或所述充电电流小于所述电流阈值。
  57. 如权利要求51所述的方法,其特征在于,所述电源适配器确定开启所述快速充电模式,包括:
    所述电源适配器从所述移动终端接收询问消息,所述询问消息用于询问所述电源适配器是否支持所述快速充电模式;
    所述电源适配器向所述移动终端发送应答消息,所述应答消息用于指示所述电源适配器支持所述快速充电模式;
    所述电源适配器从所述移动终端接收指示消息,所述指示消息用于指示所述电源适配器开启所述快速充电模式。
  58. 如权利要求51-57中任一项所述的方法,其特征在于,所述电源适配器通过第二指令与所述移动终端进行握手通信,以确定所述快速充电模式对应的充电电压,包括:
    所述电源适配器向所述移动终端发送所述第二指令,所述第二指令用于询问所述电源适配器的当前输出电压是否适合作为所述快速充电模式的充电电压;
    所述电源适配器接收所述移动终端发送的所述第二指令的回复指令,所述第二指令的回复指令用于指示所述电源适配器的当前输出电压合适、偏高或偏低;
    当所述第二指令的回复指令指示所述电源适配器的当前输出电压合适时,所述电源适配器将所述电源适配器的当前输出电压确定为所述快速充电模式对应的充电电压;
    当所述第二指令的回复指令指示所述电源适配器的当前输出电压偏高 或偏低时,所述电源适配器根据所述第二指令的回复指令,调整所述电源适配器的当前输出电压,重复执行上述基于第二指令的握手通信过程,不断调整所述电源适配器的当前输出电压,直到所述第二指令的回复指令指示所述电源适配器的当前输出电压合适为止。
  59. 如权利要求58所述的方法,其特征在于,所述方法还包括:
    所述电源适配器确定基于所述第二指令的握手通信过程的时间长度;
    当所述时间长度大于预设的时间长度阈值时,所述电源适配器确认所述第二指令的握手通信的过程异常,退出所述快速充电模式的握手通信过程,或重新确定是否开始快速充电模式。
  60. 如权利要求51-59中任一项所述的方法,其特征在于,所述电源适配器通过第三指令与所述移动终端进行握手通信,以确定所述快速充电模式对应的充电电流,包括:
    所述电源适配器向所述移动终端发送所述第三指令,所述第三指令用于询问所述移动终端当前支持的最大充电电流;
    所述电源适配器接收所述移动终端发送的所述第三指令的回复指令,所述第三指令的回复指令用于指示所述移动终端当前支持的最大充电电流;
    所述电源适配器根据所述第三指令的回复指令,确定所述快速充电模式的充电电流。
  61. 如权利要求51-60中任一项所述的方法,其特征在于,所述电源适配器将输出电流调整至所述快速充电模式对应的充电电流,包括:
    所述电源适配器通过控制电流调整速度,将输出电流调整至所述快速充电模式对应的充电电流,其中,所述电流调整速度位于预设的电流速度调整范围内。
  62. 如权利要求51-61中任一项所述的方法,其特征在于,所述在所述恒流阶段,所述电源适配器通过第四指令与所述移动终端进行握手通信,以调整所述电源适配器的输出电流,包括:
    在所述恒流阶段,所述电源适配器向所述移动终端发送第四指令,所述第四指令用于询问所述移动终端内的电池的当前电压;
    所述电源适配器接收所述移动终端发送的所述第四指令的回复指令,所述第四指令的回复指令用于指示所述移动终端内的电池的当前电压;
    所述电源适配器根据所述电池的当前电压,调整所述电源适配器的输出 电流。
  63. 如权利要求62所述的方法,其特征在于,所述在所述恒流阶段,所述电源适配器向所述移动终端发送第四指令,所述第四指令用于询问所述移动终端内的电池的当前电压,包括:
    在所述恒流阶段,所述电源适配器每隔一段预设的时间间隔,向所述移动终端发送一次所述第四指令。
  64. 如权利要求62或63所述的方法,其特征在于,在所述恒流阶段,在电源适配器的输出电流的每次调整过程中,所述电源适配器的输出电流的调整幅度小于或等于所述电源适配器的当前输出电流的5%。
  65. 如权利要求62-64中任一项所述的方法,其特征在于,所述方法还包括:
    所述电源适配器从所述移动终端接收用于指示所述移动终端的通路阻抗的阻抗信息;
    在所述恒流阶段,所述电源适配器根据所述电源适配器的当前输出电压和所述电池的当前电压,确定所述电源适配器到所述电池的充电回路阻抗;
    所述电源适配器根据所述充电回路阻抗、所述移动终端的通路阻抗,以及所述电源适配器和所述移动终端之间的充电线线路的通路阻抗,确定所述USB接口是否接触不良;
    当所述USB接口接触不良时,所述电源适配器退出所述快速充电模式或重新确定是否开启所述快速充电模式。
  66. 如权利要求65所述的方法,其特征在于,所述方法还包括:
    当所述USB接口接触不良时,所述电源适配器向所述移动终端发送第五指令,所述第五指令用于指示所述USB接口接触不良,所述电源适配器准备退出快速充电模式或重新确定是否开启所述快速充电模式。
  67. 如权利要求51-66中任一项所述的方法,其特征在于,在所述恒流阶段,所述电源适配器和所述移动终端的通信时间间隔小于预设的时间间隔阈值,否则退出所述快速充电模式或重新确定是否开启所述快速充电模式。
  68. 如权利要求51-67中任一项所述的方法,其特征在于,所述快速充电模式的停止包括两种停止模式:可恢复的停止模式和不可恢复的停止模式,在所述可恢复的停止模式中,所述电源适配器或所述移动终端重新开启所述快速充电模式,与所述移动终端重新进行握手通信;在所述不可恢复的 停止模式中,所述电源适配器或所述移动终端不再开启所述快速充电模式,使用所述普通充电模式为所述移动终端充电,或不再为所述移动终端充电。
  69. 如权利要求68所述的方法,其特征在于,所述可恢复的停止模式适用于的情况包括:所述电源适配器和所述移动终端之间出现通信异常或所述移动终端的电池出现异常,所述快速充电模式停止,所述电源适配器重新询问所述移动终端是否同意开启所述快速充电模式,所述移动终端同意重新开启所述快速充电模式;或者,
    所述不可恢复的停止模式适用的情况包括:所述移动终端的电池充满或所述USB接口接触不良,所述电源适配器重新询问所述移动终端是否开启所述快速充电模式,所述移动终端不同意开启所述快速充电模式。
  70. 如权利要求51-69中任一项所述的方法,其特征在于,所述方法还包括:
    所述电源适配器确定连接所述电源适配器和所述移动终端的USB接口的数据线是否为支持所述快速充电模式的数据线。
  71. 如权利要求51-70中任一项所述的方法,其特征在于,在所述电源适配器和所述移动终端握手通信的任意过程中,当出现通信异常时,停止所述快速充电模式。
  72. 如权利要求51-71中任一项所述的方法,其特征在于,在所述电源适配器与所述移动终端通信的过程中,所述电源适配器作为主机,提供用于所述电源适配器和所述移动终端同步的时钟信号。
  73. 如权利要求72所述的方法,其特征在于,所述电源适配器通过所述USB接口中的D+数据线提供所述时钟信号,所述电源适配器与所述移动终端通过所述USB接口中的D-数据线进行通信和/或传输数据。
  74. 如权利要求51-73中任一项所述的方法,其特征在于,所述电源适配器和所述移动终端之间的通信和/或充电过程是基于开环电流分段恒流VOOC闪充技术或VOOC闪充通信协议进行的。
  75. 一种快速充电方法,其特征在于,所述方法应用于移动终端,所述移动终端与电源适配器通过通用串行总线USB接口相连,所述USB接口中的电源线用于为所述移动终端充电,所述USB接口中的数据线用于所述移动终端和所述电源适配器进行双向通信,所述移动终端支持普通充电模式和快速充电模式,其中所述快速充电模式的充电电流大于所述普通充电模式的 充电电流,所述方法包括:
    所述移动终端确定开启所述快速充电模式;
    所述移动终端通过所述电源适配器发送的第二指令与所述电源适配器进行握手通信,以确定所述快速充电模式对应的充电电压;
    所述移动终端通过所述电源适配器发送的第三指令与所述电源适配器进行握手通信,以确定所述快速充电模式对应的充电电流;
    在所述电源适配器将输出电压和输出电流调整至所述快速充电模式对应的充电电压和充电电流,进入恒流阶段之后,所述移动终端通过所述电源适配器发送的第四指令与所述电源适配器进行握手通信,以便所述电源适配器调整输出电流,以分段恒流的形式为所述移动终端充电。
  76. 如权利要求75所述的方法,其特征在于,所述移动终端确定开启所述快速充电模式,包括:
    所述移动终端通过所述电源适配器发送的第一指令与所述移动终端进行握手通信,以确定开启所述快速充电模式。
  77. 如权利要求76所述的方法,其特征在于,所述移动终端通过所述电源适配器发送的第一指令与所述移动终端进行握手通信,以确定开启所述快速充电模式,包括:
    所述移动终端从所述电源适配器接收所述第一指令,所述第一指令用于询问所述移动终端是否开启所述快速充电模式;
    所述移动终端向所述电源适配器发送所述第一指令的回复指令,所述第一指令的回复指令用于指示所述移动终端同意开启所述快速充电模式。
  78. 如权利要求77所述的方法,其特征在于,所述第一指令的回复指令包括用于指示所述移动终端通路阻抗的阻抗信息,所述阻抗信息用于所述电源适配器在所述恒流阶段确定所述USB接口是否接触不良。
  79. 如权利要求77所述的方法,其特征在于,所述方法还包括:
    在与所述电源适配器连接的过程中,所述移动终端通过所述USB接口中的D+数据线和D-数据线检测所述电源适配器的类型;
    所述移动终端从所述电源适配器接收充电电流,所述充电电流大于预设的电流阈值;
    所述移动终端从所述电源适配器接收所述第一指令,包括:
    在所述电源适配器检测到所述电源适配器为所述移动终端提供的充电 电流在预设的时长内大于或等于所述电流阈值后,所述移动终端从所述电源适配器接收所述第一指令。
  80. 如权利要求75所述的方法,其特征在于,所述移动终端确定开启所述快速充电模式,包括:
    所述移动终端向所述电源适配器发送询问消息,所述询问消息用于询问所述电源适配器是否支持所述快速充电模式;
    所述移动终端从所述电源适配器接收应答消息,所述应答消息用于指示所述电源适配器支持所述快速充电模式;
    所述移动终端向所述电源适配器发送指示消息,所述指示消息用于指示所述电源适配器开启所述快速充电模式。
  81. 如权利要求75-80中任一项所述的方法,其特征在于,所述移动终端通过所述电源适配器发送的第二指令与所述电源适配器进行握手通信,以确定所述快速充电模式对应的充电电压,包括:
    所述移动终端从所述电源适配器接收所述第二指令,所述第二指令用于询问所述电源适配器的当前输出电压是否适合作为所述快速充电模式的充电电压;
    所述移动终端向所述电源适配器发送所述第二指令的回复指令,所述第二指令的回复指令用于指示所述电源适配器的当前输出电压合适、偏高或偏低,以便所述电源适配器根据所述第二指令的回复指令确定所述快速充电模式对应的充电电压。
  82. 如权利要求81所述的方法,其特征在于,所述移动终端向所述电源适配器发送所述第二指令的回复指令,包括:
    当所述移动终端确定所述电源适配器的当前输出电压高于所述移动终端的电池电压,且所述电源适配器的当前输出电压与所述电池电压的压差在预设的压差阈值范围内时,所述移动终端向所述电源适配器发送所述第二指令的回复指令,所述第二指令的回复指令用于指示所述电源适配器的当前输出电压合适。
  83. 如权利要求82所述的方法,其特征在于,所述压差阈值在200mV至500mV的范围内。
  84. 如权利要求81-83中任一项所述的方法,其特征在于,所述方法还包括:
    所述移动终端确定基于所述第二指令的握手通信过程的时间长度;
    当所述时间长度大于预设的时间长度阈值时,所述移动终端确认所述第二指令的握手通信的过程异常,退出所述快速充电模式的握手通信过程,或重新确定是否开始快速充电模式。
  85. 如权利要求75-84中任一项所述的方法,其特征在于,所述移动终端通过所述电源适配器发送的第三指令与所述电源适配器进行握手通信,以确定所述快速充电模式对应的充电电流,包括:
    所述移动终端从所述电源适配器接收所述第三指令,所述第三指令用于询问所述移动终端当前支持的最大充电电流;
    所述移动终端向所述电源适配器发送第三指令的回复指令,所述第三指令的回复指令用于指示所述移动终端当前支持的最大充电电流,以便所述电源适配器根据所述第三指令的回复指令,确定所述快速充电模式对应的充电电流。
  86. 如权利要求75-85中任一项所述的方法,其特征在于,所述移动终端通过所述电源适配器发送的第四指令与所述电源适配器进行握手通信,以便所述电源适配器调整输出电流,包括:
    在所述恒流阶段,所述移动终端从所述电源适配器接收第四指令,所述第四指令用于询问所述移动终端内的电池的当前电压;
    所述移动终端向所述电源适配器发送所述第四指令的回复指令,所述第四指令的回复指令用于指示所述移动终端内的电池的当前电压,以便所述电源适配器根据所述电池的当前电压,调整所述电源适配器的输出电流。
  87. 如权利要求86所述的方法,其特征在于,所述在所述恒流阶段,所述移动终端从所述电源适配器接收第四指令,所述第四指令用于询问所述移动终端内的电池的当前电压,包括:
    在所述恒流阶段,所述移动终端每隔一段预设的时间间隔,从所述电源适配器接收一次所述第四指令。
  88. 如权利要求86或87所述的方法,其特征在于,在所述恒流阶段,在电源适配器的输出电流的每次调整过程中,所述电源适配器的输出电流的调整幅度小于或等于所述电源适配器的当前输出电流的5%。
  89. 如权利要求86-88中任一项所述的方法,其特征在于,所述方法还包括:
    所述移动终端向所述电源适配器发送用于指示所述移动终端的通路阻抗的信息,以便所述电源适配器在所述恒流阶段根据所述通路阻抗确定所述USB接口是否接触不良;
    当所述电源适配器确定所述USB接口接触不良时,所述移动终端从所述电源适配器接收第五指令,所述第五指令用于指示所述USB接口接触不良,所述电源适配器准备退出快速充电模式或重新确定是否开启所述快速充电模式。
  90. 如权利要求75-89中任一项所述的方法,其特征在于,在所述恒流阶段,所述电源适配器和所述移动终端的通信时间间隔小于预设的时间间隔阈值,否则退出所述快速充电模式或重新开启所述快速充电模式。
  91. 如权利要求75-90中任一项所述的方法,其特征在于,所述快速充电模式的停止包括两种停止模式:可恢复的停止模式和不可恢复的停止模式,在所述可恢复的停止模式中,所述电源适配器或所述移动终端重新开启所述快速充电模式,与所述移动终端重新进行握手通信;在所述不可恢复的停止模式中,所述电源适配器或所述移动终端不再开启所述快速充电模式,使用所述普通充电模式为所述移动终端充电,或不再为所述移动终端充电。
  92. 如权利要求91所述的方法,其特征在于,所述可恢复的停止模式适用于的情况包括:所述电源适配器和所述移动终端之间出现通信异常或所述移动终端的电池出现异常,所述快速充电模式停止,所述电源适配器重新询问所述移动终端是否同意开启所述快速充电模式,所述移动终端同意重新开启所述快速充电模式;或者,
    所述不可恢复的停止模式适用的情况包括:所述移动终端的电池充满或所述USB接口接触不良,所述电源适配器重新询问所述移动终端是否开启所述快速充电模式,所述移动终端不同意开启所述快速充电模式。
  93. 如权利要求75-92中任一项所述的方法,其特征在于,所述方法还包括:
    所述移动终端确定连接所述电源适配器和所述移动终端的USB接口的数据线是否为支持所述快速充电模式的数据线。
  94. 如权利要求75-93中任一项所述的方法,其特征在于,在所述电源适配器和所述移动终端握手通信的任意过程中,当出现通信异常时,停止所述快速充电模式。
  95. 如权利要求75-94中任一项所述的方法,其特征在于,在所述电源适配器与所述移动终端通信的过程中,所述电源适配器作为主机,提供用于所述电源适配器和所述移动终端同步的时钟信号。
  96. 如权利要求95所述的方法,其特征在于,所述电源适配器通过所述USB接口中的D+数据线提供所述时钟信号,所述电源适配器与所述移动终端通过所述USB接口中的D-数据线进行通信和/或传输数据。
  97. 如权利要求95-96中任一项所述的方法,其特征在于,所述电源适配器和所述移动终端之间的通信和/或充电过程是基于开环电流分段恒流VOOC闪充技术或VOOC闪充通信协议进行的。
  98. 一种电源适配器,其特征在于,所述电源适配器与移动终端通过通用串行总线USB接口相连,所述USB接口中的电源线用于所述电源适配器为所述移动终端充电,所述USB接口中的数据线用于所述电源适配器和所述移动终端进行双向通信,所述电源适配器支持普通充电模式和快速充电模式,其中所述快速充电模式的充电电流大于所述普通充电模式的充电电流,所述电源适配器包括:通信控制电路和充电电路,
    所述通信控制电路用于确定开启所述快速充电模式;通过第二指令与所述移动终端进行握手通信,以确定所述快速充电模式对应的充电电压;通过第三指令与所述移动终端进行握手通信,以确定所述快速充电模式对应的充电电流;将输出电压和输出电流调整至所述快速充电模式对应的充电电压和充电电流,进入恒流阶段;在所述恒流阶段,通过第四指令与所述移动终端进行握手通信,以调整所述电源适配器的输出电流,从而通过所述充电电路以分段恒流的形式为所述移动终端充电。
  99. 如权利要求98所述的电源适配器,其特征在于,所述通信控制电路具体用于通过第一指令与所述移动终端进行握手通信,以确定开启所述快速充电模式。
  100. 如权利要求99所述的电源适配器,其特征在于,所述通信控制电路具体用于所述电源适配器向所述移动终端发送所述第一指令,所述第一指令用于询问所述移动终端是否开启所述快速充电模式;从所述移动终端接收所述第一指令的回复指令;当所述第一指令的回复指令指示所述移动终端同意开启所述快速充电模式时,确定开启所述快速充电模式。
  101. 如权利要求100所述的电源适配器,其特征在于,所述第一指令 的回复指令包括用于指示所述移动终端通路阻抗的阻抗信息,所述阻抗信息用于所述电源适配器在所述恒流阶段确定所述USB接口是否接触不良。
  102. 如权利要求100所述的电源适配器,其特征在于,所述通信控制电路还用于在与所述移动终端连接的过程中,当所述电源适配器检测到所述电源适配器为所述移动终端提供的充电电流在预设的时长内大于或等于预设的电流阈值时,确认所述移动终端已经完成所述电源适配器的类型的识别;在所述电源适配器确认所述移动终端已经识别完所述电源适配器的类型之后,所述电源适配器向所述移动终端发送所述第一指令。
  103. 如权利要求102所述的电源适配器,其特征在于,所述通信控制电路还用于当所述第一指令的回复指令指示所述移动终端不同意开启所述快速充电模式时,所述电源适配器重复执行上述充电电流的检测过程和第一指令的握手通信过程,直到所述移动终端同意开启所述快速充电模式或所述充电电流小于所述电流阈值。
  104. 如权利要求98所述的电源适配器,其特征在于,所述通信控制电路具体用于从所述移动终端接收询问消息,所述询问消息用于询问所述电源适配器是否支持所述快速充电模式;向所述移动终端发送应答消息,所述应答消息用于指示所述电源适配器支持所述快速充电模式;从所述移动终端接收指示消息,所述指示消息用于指示所述电源适配器开启所述快速充电模式。
  105. 如权利要求98-104中任一项所述的电源适配器,其特征在于,所述通信控制电路具体用于向所述移动终端发送所述第二指令,所述第二指令用于询问所述电源适配器的当前输出电压是否适合作为所述快速充电模式的充电电压;接收所述移动终端发送的所述第二指令的回复指令,所述第二指令的回复指令用于指示所述电源适配器的当前输出电压合适、偏高或偏低;当所述第二指令的回复指令指示所述电源适配器的当前输出电压合适时,将所述电源适配器的当前输出电压确定为所述快速充电模式对应的充电电压;当所述第二指令的回复指令指示所述电源适配器的当前输出电压偏高或偏低时,根据所述第二指令的回复指令,调整所述电源适配器的当前输出电压,重复执行上述基于第二指令的握手通信过程,不断调整所述电源适配器的当前输出电压,直到所述第二指令的回复指令指示所述电源适配器的当前输出电压合适为止。
  106. 如权利要求105所述的电源适配器,其特征在于,所述通信控制电路还用于确定基于所述第二指令的握手通信过程的时间长度;当所述时间长度大于预设的时间长度阈值时,确认所述第二指令的握手通信的过程异常,退出所述快速充电模式的握手通信过程,或重新确定是否开始快速充电模式。
  107. 如权利要求98-106中任一项所述的电源适配器,其特征在于,所述通信控制电路具体用于向所述移动终端发送所述第三指令,所述第三指令用于询问所述移动终端当前支持的最大充电电流;接收所述移动终端发送的所述第三指令的回复指令,所述第三指令的回复指令用于指示所述移动终端当前支持的最大充电电流;根据所述第三指令的回复指令,确定所述快速充电模式的充电电流。
  108. 如权利要求98-107中任一项所述的电源适配器,其特征在于,所述通信控制电路具体用于通过控制电流调整速度,将输出电流调整至所述快速充电模式对应的充电电流,其中,所述电流调整速度位于预设的电流速度调整范围内。
  109. 如权利要求98-108中任一项所述的电源适配器,其特征在于,所述通信控制电路具体用于在所述恒流阶段,所述电源适配器向所述移动终端发送第四指令,所述第四指令用于询问所述移动终端内的电池的当前电压;接收所述移动终端发送的所述第四指令的回复指令,所述第四指令的回复指令用于指示所述移动终端内的电池的当前电压;根据所述电池的当前电压,调整所述电源适配器的输出电流。
  110. 如权利要求109所述的电源适配器,其特征在于,所述通信控制电路具体用于在所述恒流阶段,每隔一段预设的时间间隔,向所述移动终端发送一次所述第四指令。
  111. 如权利要求109或110所述的电源适配器,其特征在于,在所述恒流阶段,在电源适配器的输出电流的每次调整过程中,所述电源适配器的输出电流的调整幅度小于或等于所述电源适配器的当前输出电流的5%。
  112. 如权利要求109-111中任一项所述的电源适配器,其特征在于,所述通信控制电路还用于从所述移动终端接收用于指示所述移动终端的通路阻抗的阻抗信息;在所述恒流阶段,根据所述电源适配器的当前输出电压和所述电池的当前电压,确定所述电源适配器到所述电池的充电回路阻抗;根 据所述充电回路阻抗、所述移动终端的通路阻抗,以及所述电源适配器和所述移动终端之间的充电线线路的通路阻抗,确定所述USB接口是否接触不良;当所述USB接口接触不良时,退出所述快速充电模式或重新确定是否开启所述快速充电模式。
  113. 如权利要求112所述的电源适配器,其特征在于,所述通信控制电路还用于当所述USB接口接触不良时,向所述移动终端发送第五指令,所述第五指令用于指示所述USB接口接触不良,所述电源适配器准备退出快速充电模式或重新确定是否开启所述快速充电模式。
  114. 如权利要求98-113中任一项所述的电源适配器,其特征在于,在所述恒流阶段,所述电源适配器和所述移动终端的通信时间间隔小于预设的时间间隔阈值,否则退出所述快速充电模式或重新确定是否开启所述快速充电模式。
  115. 如权利要求98-114中任一项所述的电源适配器,其特征在于,所述快速充电模式的停止包括两种停止模式:可恢复的停止模式和不可恢复的停止模式,在所述可恢复的停止模式中,所述电源适配器或所述移动终端重新开启所述快速充电模式,与所述移动终端重新进行握手通信;在所述不可恢复的停止模式中,所述电源适配器或所述移动终端不再开启所述快速充电模式,使用所述普通充电模式为所述移动终端充电,或不再为所述移动终端充电。
  116. 如权利要求115所述的电源适配器,其特征在于,所述可恢复的停止模式适用于的情况包括:所述电源适配器和所述移动终端之间出现通信异常或所述移动终端的电池出现异常,所述快速充电模式停止,所述电源适配器重新询问所述移动终端是否同意开启所述快速充电模式,所述移动终端同意重新开启所述快速充电模式;或者,
    所述不可恢复的停止模式适用的情况包括:所述移动终端的电池充满或所述USB接口接触不良,所述电源适配器重新询问所述移动终端是否开启所述快速充电模式,所述移动终端不同意开启所述快速充电模式。
  117. 如权利要求98-116中任一项所述的电源适配器,其特征在于,所述通信控制电路还用于确定连接所述电源适配器和所述移动终端的USB接口的数据线是否为支持所述快速充电模式的数据线。
  118. 如权利要求98-117中任一项所述的电源适配器,其特征在于,在 所述电源适配器和所述移动终端握手通信的任意过程中,当出现通信异常时,停止所述快速充电模式。
  119. 如权利要求98-118中任一项所述的电源适配器,其特征在于,在所述电源适配器与所述移动终端通信的过程中,所述电源适配器作为主机,提供用于所述电源适配器和所述移动终端同步的时钟信号。
  120. 如权利要求119所述的电源适配器,其特征在于,所述电源适配器通过所述USB接口中的D+数据线提供所述时钟信号,所述电源适配器与所述移动终端通过所述USB接口中的D-数据线进行通信和/或传输数据。
  121. 如权利要求98-120中任一项所述的电源适配器,其特征在于,所述电源适配器和所述移动终端之间的通信和/或充电过程是基于开环电流分段恒流VOOC闪充技术或VOOC闪充通信协议进行的。
  122. 一种移动终端,其特征在于,所述移动终端与电源适配器通过通用串行总线USB接口相连,所述USB接口中的电源线用于为所述移动终端充电,所述USB接口中的数据线用于所述移动终端和所述电源适配器进行双向通信,所述移动终端支持普通充电模式和快速充电模式,其中所述快速充电模式的充电电流大于所述普通充电模式的充电电流,所述移动终端包括:通信控制电路和充电电路,
    所述通信控制电路用于确定开启所述快速充电模式;通过所述电源适配器发送的第二指令与所述电源适配器进行握手通信,以确定所述快速充电模式对应的充电电压;通过所述电源适配器发送的第三指令与所述电源适配器进行握手通信,以确定所述快速充电模式对应的充电电流;在所述电源适配器将输出电压和输出电流调整至所述快速充电模式对应的充电电压和充电电流,进入恒流阶段之后,通过所述电源适配器发送的第四指令与所述电源适配器进行握手通信,以便所述电源适配器调整输出电流,以分段恒流的形式通过所述充电电路为所述移动终端充电。
  123. 如权利要求122所述的移动终端,其特征在于,所述通信控制电路具体用于通过所述电源适配器发送的第一指令与所述移动终端进行握手通信,以确定开启所述快速充电模式。
  124. 如权利要求123所述的移动终端,其特征在于,所述通信控制电路具体用于从所述电源适配器接收所述第一指令,所述第一指令用于询问所述移动终端是否开启所述快速充电模式;向所述电源适配器发送所述第一指 令的回复指令,所述第一指令的回复指令用于指示所述移动终端同意开启所述快速充电模式。
  125. 如权利要求124所述的移动终端,其特征在于,所述第一指令的回复指令包括用于指示所述移动终端通路阻抗的阻抗信息,所述阻抗信息用于所述电源适配器在所述恒流阶段确定所述USB接口是否接触不良。
  126. 如权利要求124所述的移动终端,其特征在于,所述通信控制电路还用于在与所述电源适配器连接的过程中,通过所述USB接口中的D+数据线和D-数据线检测所述电源适配器的类型;从所述电源适配器接收充电电流,所述充电电流大于预设的电流阈值;所述通信控制电路具体用于在所述电源适配器检测到所述电源适配器为所述移动终端提供的充电电流在预设的时长内大于或等于所述电流阈值后,从所述电源适配器接收所述第一指令。
  127. 如权利要求122所述的移动终端,其特征在于,所述通信控制电路具体用于向所述电源适配器发送询问消息,所述询问消息用于询问所述电源适配器是否支持所述快速充电模式;从所述电源适配器接收应答消息,所述应答消息用于指示所述电源适配器支持所述快速充电模式;向所述电源适配器发送指示消息,所述指示消息用于指示所述电源适配器开启所述快速充电模式。
  128. 如权利要求122-127中任一项所述的移动终端,其特征在于,所述通信控制电路具体用于从所述电源适配器接收所述第二指令,所述第二指令用于询问所述电源适配器的当前输出电压是否适合作为所述快速充电模式的充电电压;向所述电源适配器发送所述第二指令的回复指令,所述第二指令的回复指令用于指示所述电源适配器的当前输出电压合适、偏高或偏低,以便所述电源适配器根据所述第二指令的回复指令确定所述快速充电模式对应的充电电压。
  129. 如权利要求128所述的移动终端,其特征在于,所述通信控制电路具体用于当所述移动终端确定所述电源适配器的当前输出电压高于所述移动终端的电池电压,且所述电源适配器的当前输出电压与所述电池电压的压差在预设的压差阈值范围内时,向所述电源适配器发送所述第二指令的回复指令,所述第二指令的回复指令用于指示所述电源适配器的当前输出电压合适。
  130. 如权利要求129所述的移动终端,其特征在于,所述压差阈值在200mV至500mV的范围内。
  131. 如权利要求128-130中任一项所述的移动终端,其特征在于,所述通信控制电路还用于确定基于所述第二指令的握手通信过程的时间长度;当所述时间长度大于预设的时间长度阈值时,确认所述第二指令的握手通信的过程异常,退出所述快速充电模式的握手通信过程,或重新确定是否开始快速充电模式。
  132. 如权利要求122-131中任一项所述的移动终端,其特征在于,所述通信控制电路具体用于从所述电源适配器接收所述第三指令,所述第三指令用于询问所述移动终端当前支持的最大充电电流;向所述电源适配器发送第三指令的回复指令,所述第三指令的回复指令用于指示所述移动终端当前支持的最大充电电流,以便所述电源适配器根据所述第三指令的回复指令,确定所述快速充电模式对应的充电电流。
  133. 如权利要求122-132中任一项所述的移动终端,其特征在于,所述通信控制电路具体用于在所述恒流阶段,所述移动终端从所述电源适配器接收第四指令,所述第四指令用于询问所述移动终端内的电池的当前电压;向所述电源适配器发送所述第四指令的回复指令,所述第四指令的回复指令用于指示所述移动终端内的电池的当前电压,以便所述电源适配器根据所述电池的当前电压,调整所述电源适配器的输出电流。
  134. 如权利要求133所述的移动终端,其特征在于,所述通信控制电路用于在所述恒流阶段,每隔一段预设的时间间隔,从所述电源适配器接收一次所述第四指令。
  135. 如权利要求133或134所述的移动终端,其特征在于,在所述恒流阶段,在电源适配器的输出电流的每次调整过程中,所述电源适配器的输出电流的调整幅度小于或等于所述电源适配器的当前输出电流的5%。
  136. 如权利要求133-135中任一项所述的移动终端,其特征在于,所述通信控制电路还用于向所述电源适配器发送用于指示所述移动终端的通路阻抗的信息,以便所述电源适配器在所述恒流阶段根据所述通路阻抗确定所述USB接口是否接触不良;当所述电源适配器确定所述USB接口接触不良时,从所述电源适配器接收第五指令,所述第五指令用于指示所述USB接口接触不良,所述电源适配器准备退出快速充电模式或重新确定是否开启 所述快速充电模式。
  137. 如权利要求122-136中任一项所述的移动终端,其特征在于,在所述恒流阶段,所述电源适配器和所述移动终端的通信时间间隔小于预设的时间间隔阈值,否则退出所述快速充电模式或重新开启所述快速充电模式。
  138. 如权利要求122-137中任一项所述的移动终端,其特征在于,所述快速充电模式的停止包括两种停止模式:可恢复的停止模式和不可恢复的停止模式,在所述可恢复的停止模式中,所述电源适配器或所述移动终端重新开启所述快速充电模式,与所述移动终端重新进行握手通信;在所述不可恢复的停止模式中,所述电源适配器或所述移动终端不再开启所述快速充电模式,使用所述普通充电模式为所述移动终端充电,或不再为所述移动终端充电。
  139. 如权利要求138所述的移动终端,其特征在于,所述可恢复的停止模式适用于的情况包括:所述电源适配器和所述移动终端之间出现通信异常或所述移动终端的电池出现异常,所述快速充电模式停止,所述电源适配器重新询问所述移动终端是否同意开启所述快速充电模式,所述移动终端同意重新开启所述快速充电模式;或者,
    所述不可恢复的停止模式适用的情况包括:所述移动终端的电池充满或所述USB接口接触不良,所述电源适配器重新询问所述移动终端是否开启所述快速充电模式,所述移动终端不同意开启所述快速充电模式。
  140. 如权利要求122-139中任一项所述的移动终端,其特征在于,所述通信控制电路还用于确定连接所述电源适配器和所述移动终端的USB接口的数据线是否为支持所述快速充电模式的数据线。
  141. 如权利要求122-140中任一项所述的移动终端,其特征在于,在所述电源适配器和所述移动终端握手通信的任意过程中,当出现通信异常时,停止所述快速充电模式。
  142. 如权利要求122-141中任一项所述的移动终端,其特征在于,在所述电源适配器与所述移动终端通信的过程中,所述电源适配器作为主机,提供用于所述电源适配器和所述移动终端同步的时钟信号。
  143. 如权利要求142所述的移动终端,其特征在于,所述电源适配器通过所述USB接口中的D+数据线提供所述时钟信号,所述电源适配器与所述移动终端通过所述USB接口中的D-数据线进行通信和/或传输数据。
  144. 如权利要求142-143中任一项所述的移动终端,其特征在于,所述电源适配器和所述移动终端之间的通信和/或充电过程是基于开环电流分段恒流VOOC闪充技术或VOOC闪充通信协议进行的。
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