WO2017117730A1 - 快速充电方法、移动终端和适配器 - Google Patents

快速充电方法、移动终端和适配器 Download PDF

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Publication number
WO2017117730A1
WO2017117730A1 PCT/CN2016/070204 CN2016070204W WO2017117730A1 WO 2017117730 A1 WO2017117730 A1 WO 2017117730A1 CN 2016070204 W CN2016070204 W CN 2016070204W WO 2017117730 A1 WO2017117730 A1 WO 2017117730A1
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WO
WIPO (PCT)
Prior art keywords
adapter
instruction
mobile terminal
bits
reply
Prior art date
Application number
PCT/CN2016/070204
Other languages
English (en)
French (fr)
Inventor
田晨
张加亮
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 to ES18191449T priority Critical patent/ES2896245T3/es
Priority to DK16818967.8T priority patent/DK3214726T3/en
Priority to ES16818967T priority patent/ES2712066T3/es
Priority to PCT/CN2016/070204 priority patent/WO2017117730A1/zh
Priority to EP18191449.0A priority patent/EP3429057B1/en
Priority to PL16818967T priority patent/PL3214726T3/pl
Priority to CN201680000936.1A priority patent/CN107210615B/zh
Priority to EP21195275.9A priority patent/EP3940918A1/en
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 HUE16818967A priority patent/HUE042719T2/hu
Priority to PT16818967T priority patent/PT3214726T/pt
Priority to EP16818967.8A priority patent/EP3214726B1/en
Priority to TW105119202A priority patent/TWI636637B/zh
Priority to US15/405,610 priority patent/US10581262B2/en
Publication of WO2017117730A1 publication Critical patent/WO2017117730A1/zh
Priority to US16/705,544 priority patent/US11233416B2/en
Priority to US17/544,587 priority patent/US11791651B2/en
Priority to US18/363,715 priority patent/US20240022105A1/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
    • H02J7/02Circuit 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
    • 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
    • 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
    • H02J7/0045Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction concerning the insertion or the connection of the 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
    • H02J7/007Regulation of charging or discharging current or voltage
    • H02J7/0071Regulation of charging or discharging current or voltage with a programmable schedule
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M19/00Current supply arrangements for telephone systems
    • 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
    • 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
    • H02J7/00032Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
    • H02J7/00045Authentication, i.e. circuits for checking compatibility between one component, e.g. a battery or a battery charger, and another component, e.g. a power source
    • 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
    • H02J7/0029Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/0034Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using reverse polarity correcting or protecting circuits

Definitions

  • Embodiments of the present invention relate to the field of charging, and more particularly, to a fast charging method, a mobile terminal, and an adapter.
  • 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 receiving current of the adapter is generally not considered, and the output current of the adapter is directly increased, which may cause the mobile terminal to overheat or even burn out, thereby reducing the service life of the mobile terminal.
  • the application provides a fast charging method, an 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 mobile terminal, wherein the mobile terminal is connected to an adapter through a USB interface, and a power line in the USB interface is used to charge a battery of the mobile terminal.
  • the data line in the USB interface is used for communication between the mobile terminal and the adapter, the mobile terminal supports a normal charging mode and a fast charging mode, wherein the charging speed of the fast charging mode is greater than the charging of the normal charging mode Speed
  • the method includes: after detecting that the adapter is connected to the mobile terminal, the mobile terminal determines a type of the adapter; when determining that the type of the adapter is a non-USB type, the mobile terminal The adapter sends indication information, the indication information is used to indicate that the mobile terminal has completed identification of the type of the adapter, to trigger the adapter to enable a fast charge communication flow; and the fast charge communication flow is started in the adapter Thereafter, the mobile terminal receives a first instruction from the adapter, the first instruction being used to query the
  • the reply instruction of the first instruction includes a plurality of bits, where the multiple bits are used to indicate whether the mobile terminal agrees to use the fast charging A bit of the mode, and a bit for indicating the path impedance of the mobile terminal, the path impedance of the mobile terminal being used by the adapter to determine if the contact of the USB interface is good.
  • the first instruction is 10101000, or 0xA8.
  • the mobile terminal performs handshake communication with the adapter by using a second instruction sent by the adapter to determine Determining a charging voltage corresponding to the fast charging mode, comprising: the mobile terminal receiving the second instruction from the adapter, the second instruction being used to query whether a current output voltage of the adapter is suitable as the fast charging mode a charging voltage; the mobile terminal sends a reply instruction of the second instruction to the adapter, where the reply instruction of the second instruction is used to indicate that the current output voltage of the adapter is suitable, high or low, so that The adapter determines a charging voltage corresponding to the fast charging mode according to the reply instruction of the second instruction.
  • the second instruction is 10100100, or 0xA4.
  • the mobile terminal performs handshake communication with the adapter by using a third instruction sent by the adapter to determine The charging current corresponding to the fast charging mode includes: the mobile terminal receiving the third instruction from the adapter, the third instruction is used to query a maximum charging current currently supported by the mobile terminal; The 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 adapter determines, according to the reply instruction of the third instruction, The charging current corresponding to the fast charging mode.
  • 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 mobile terminal performs handshake communication with the adapter by using a fourth instruction sent by the adapter, so that The adapter adjusts the output current, including: in the constant current phase, the mobile terminal receives a fourth command from the adapter, the fourth command is used to query a current voltage of a battery in the mobile terminal; the mobile terminal Sending a reply instruction of the fourth instruction to the 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 adapter adjusts according to a current voltage of the battery The output current of the adapter.
  • the reply instruction of the fourth instruction includes multiple bits, and the reply command 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 sending, to the adapter, a path for indicating the mobile terminal Information of impedance such that the adapter determines whether the USB interface is in poor contact according to the path impedance during the constant current phase; when the adapter determines that the USB interface is in poor contact, the mobile terminal receives from the adapter And a fifth instruction, the fifth instruction is used to indicate that the USB interface is in poor contact, and the adapter is ready to exit the fast charging mode or restart the fast charging communication process.
  • the fifth instruction is 10110010 or 0xB2.
  • the method further includes: when the adapter determines that a reply command received from the mobile terminal has an encoding error The mobile terminal performs at least one of the following operations: exiting the fast charging mode, stopping charging, or restarting the fast charging communication process.
  • the instruction that the mobile terminal sends to the adapter includes multiple bits, and the mobile terminal sends any When the instruction is performed, 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 adapter includes a plurality of bits, when the mobile terminal receives an instruction, The MSB of the plurality of bits of the certain instruction is received first.
  • the clock signal during communication between the adapter and the mobile terminal is provided by the adapter.
  • the instruction that the adapter sends to the mobile terminal includes a plurality of bits, among the multiple bits
  • the adapter In the process of transmitting each bit, the adapter first sends the each bit, and then sends a clock interrupt signal; or the reply command received by the adapter from the mobile terminal includes a plurality of bits, in the multiple bits
  • the adapter In the process of receiving each bit, the adapter first sends a clock interrupt signal, then delays the preset time interval, and then receives each bit.
  • each instruction sent by the adapter to the mobile terminal comprises 8 bits of data, the adapter transmitting the 8 bits to the mobile terminal through consecutive 8 clock cycles of the clock signal Data, the first 10us of each of the consecutive 8 clock cycles is a low level, and the last 500us is a high level; or, each of the reply commands received by the adapter from the mobile terminal includes 10 Bit data, the adapter receiving the 10 bits of data from the mobile terminal through consecutive 10 clock cycles of the clock signal, the first 500 us of each of the consecutive 10 clock cycles being High level, after 10us is low level.
  • the high level of the clock signal The minimum value is VDD-0.7V of the adapter; or, in the process of receiving the instruction from the mobile terminal by the adapter, the maximum value of the low level of the clock signal is 0.8V; or, in the adapter
  • 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 adapter sends an instruction to the mobile terminal, the clock signal
  • the maximum value of the high level is 4.5V; or, during the process in which the adapter sends an instruction to the mobile terminal, the maximum value of the low level of the clock signal is 0.15 VDD; wherein VDD is the adapter The operating voltage, and / or 3.2V ⁇ VDD ⁇ 4.5V.
  • the adapter after the mobile terminal receives the clock interrupt signal, the adapter sends an instruction to the mobile terminal
  • the retention time of the data in the data is 500 ⁇ 5us.
  • a fast charging method is provided, the method being applied to an adapter, the adapter being connected to a mobile terminal via a universal serial bus USB interface, and a power cord in the USB interface is used for the adapter to be the mobile Charging a battery of the terminal, the data line in the USB interface is used for communication between the adapter and the mobile terminal, the adapter supports a normal charging mode and a fast charging mode, wherein the charging speed of the fast charging mode is greater than the The charging speed of the normal charging mode, the method comprising: when receiving, from the mobile terminal, indication information indicating that the mobile terminal has completed identification of the type of the adapter, the adapter turns on a fast charging communication flow, Sending a first instruction to the mobile terminal, the first instruction for querying whether the mobile terminal agrees to use the fast charging mode to charge the battery; the adapter receiving the first instruction from the mobile terminal Responding instruction, the reply instruction of the first instruction is used to indicate that the mobile terminal agrees to use the fast charge Mode charging the battery; said adapter handshake communication
  • the method further includes: the adapter detecting a charging current provided by the adapter for the mobile terminal; when the receiving is not received from the mobile terminal Instructing information, but detecting that the charging current provided by the adapter for the mobile terminal is greater than or equal to a preset current threshold for a preset duration, the adapter determines that the mobile terminal has completed the type of the adapter Identifying, opening the fast charge communication process, and transmitting the first instruction to the mobile terminal.
  • the reply instruction of the first instruction includes a plurality of bits, where the multiple bits include Whether the mobile terminal agrees to use 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 adapter to determine whether the contact of the USB interface is good.
  • the first instruction is 10101000, or 0xA8.
  • the adapter performs handshake communication with the mobile terminal by using a second instruction to determine that the fast charging mode corresponds to And a charging voltage, comprising: the adapter transmitting the second instruction to the mobile terminal, the second instruction for querying whether a current output voltage of the adapter is suitable as a charging voltage of the fast charging mode; Receiving, by the adapter, 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 adapter is suitable, high or low; when the second instruction is When the reply command indicates that the current output voltage of the adapter is appropriate, the adapter determines the current output voltage of the adapter as the fast a charging voltage corresponding to the speed charging mode; when the reply command of the second instruction indicates that the current output voltage of the adapter is high or low, the adapter adjusts the adapter according to the reply instruction of the second instruction The current output voltage is repeatedly executed in the
  • the reply instruction of the second instruction includes multiple bits, and the reply instruction of the second instruction is more The bits include bits for indicating that the current output voltage of the adapter is suitable, high or low.
  • the second instruction is 10100100, or 0xA4.
  • the adapter performs handshake communication with the mobile terminal by using a third instruction, to determine that the fast charging mode corresponds to Charging current, comprising: the adapter transmitting the third instruction to the mobile terminal, the third instruction for querying a maximum charging current currently supported by the mobile terminal; the adapter receiving the sending by the mobile terminal a reply instruction of the third instruction, the reply instruction of the third instruction is used to indicate a maximum charging current currently supported by the mobile terminal; and the adapter determines the fast charging mode according to the reply instruction of the third instruction The charging current.
  • 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 adapter in another implementation manner of the second aspect, performs handshake communication with the mobile terminal by using a fourth instruction. Adjusting an output current of the adapter, comprising: in the constant current phase, the adapter transmitting a fourth command to the mobile terminal, the fourth command being used to query a current voltage of a battery in the mobile terminal Receiving, by the adapter, 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; Current voltage, adjusting the output current of the adapter.
  • 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 adapter receiving, by the mobile terminal, a path for indicating the mobile terminal Impedance information of impedance; in the constant current phase, the adapter determines a charging loop impedance of the adapter to the battery according to a current output voltage of the adapter and a current voltage of the battery; a charging circuit impedance, a path impedance of the mobile terminal, and a path impedance of the charging line line between the adapter and the mobile terminal, determining whether the USB interface is in poor contact; when the USB interface is in poor contact, the The adapter exits the fast charging mode or re-determines whether the fast charging mode is turned on.
  • the method further includes: when the USB interface is in poor contact, the adapter sends the mobile terminal 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 adapter is ready to 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 adapter determines that a reply command received from the mobile terminal has an encoding error The adapter performs at least one of the following operations: exiting the fast charging mode, stopping charging, or restarting the fast charging communication flow.
  • the instruction that the adapter sends to the mobile terminal includes multiple bits, and the adapter sends any instruction Transmitting the most significant bit MSB of the plurality of bits of any of the instructions; or the instruction received by the adapter from the mobile terminal includes a plurality of bits, and the adapter first receives an instruction when receiving an instruction The MSB of the plurality of bits of the instruction.
  • the clock signal or the clock interrupt signal in the communication process between the adapter and the mobile terminal is provided by the adapter .
  • the instruction that the adapter sends to the mobile terminal includes a plurality of bits, among the multiple bits
  • the adapter first sends the each bit, and then sends a clock interrupt signal; or the reply command received by the adapter from the mobile terminal includes a plurality of bits, in the multiple bits
  • the adapter first sends a clock interrupt signal, then delays the preset time interval, and then receives each bit.
  • each of the instructions sent by the adapter to the mobile terminal includes 8 bits of data, and the adapter passes And transmitting the 8 bits of data to the mobile terminal for consecutive 8 clock cycles of the clock signal, wherein the first 10 us of each of the consecutive 8 clock cycles is a low level, and the last 500 us is a high level; or each reply command received by the adapter from the mobile terminal includes 10 bits of data, the adapter receiving the 10 from the mobile terminal for 10 consecutive clock cycles of the clock signal The data of the bits, the first 500us of each of the consecutive 10 clock cycles is high, and the last 10us is low.
  • the high level of the clock signal in the process of the adapter receiving an instruction from the mobile terminal The minimum value is VDD-0.7V of the adapter; or, in the process of receiving the instruction from the mobile terminal by the adapter, the maximum value of the low level of the clock signal is 0.8V; or, in the adapter The highest level of the clock signal during the transmission of an instruction to the mobile terminal The small value is 0.25 VDD + 0.8 V; or, in the process of the adapter transmitting an instruction to the mobile terminal, the maximum value of the high level of the clock signal is 4.5 V; or, in the adapter to the During the sending of the instruction by the mobile terminal, the maximum value of the low level of the clock signal is 0.15 VDD; wherein VDD is the operating voltage of the adapter, and/or 3.2V ⁇ VDD ⁇ 4.5V.
  • the adapter after the mobile terminal receives the clock interrupt signal, the adapter sends an instruction to the mobile terminal
  • the retention time of the data in the data is 500 ⁇ 5us.
  • a third aspect provides a mobile terminal, where the mobile terminal and an adapter are connected through a universal serial bus USB interface, wherein a power line in the USB interface is used to charge a battery of the mobile terminal, where the USB interface a data line is used for communication between the mobile terminal and the adapter, the mobile terminal supporting a normal charging mode and a fast charging mode, wherein a charging speed of the fast charging mode is greater than a charging speed of the normal charging mode, the moving The terminal includes a communication control circuit and a charging circuit, the communication control circuit is configured to determine a type of the adapter after detecting that the adapter is connected to the mobile terminal; when determining that the type of the adapter is a non-USB type, Sending indication information to the adapter, the indication information is used to indicate that the mobile terminal has completed identification of the type of the adapter to trigger the adapter to enable a fast charge communication flow; and the fast charge communication is enabled at the adapter After the process, receiving a first instruction from the adapter, the first instruction being used to query the mobile terminal
  • the reply instruction of the first instruction includes a plurality of bits, where the multiple bits are used to indicate whether the mobile terminal agrees to enable the fast charging mode And a bit for indicating a path impedance of the mobile terminal, the path impedance of the mobile terminal being used by the adapter to determine whether the contact of the USB interface is good.
  • the first instruction is 10101000, or 0xA8.
  • the communication control circuit is specifically configured to receive the second instruction from the adapter, where the second instruction Querying whether a current output voltage of the adapter is suitable as a charging voltage of the fast charging mode; transmitting a reply instruction of the second instruction to the adapter, the reply instruction of the second instruction is used to indicate the adapter
  • the current output voltage is suitable, high or low, so that the adapter determines the charging voltage corresponding to the fast charging mode according to the return instruction of the second instruction.
  • the second instruction is 10100100, or 0xA4.
  • the communication control circuit is specifically configured to receive the third instruction from the adapter, the third instruction And configured to query a maximum charging current currently supported by the mobile terminal; send a reply instruction of the third instruction to the adapter, where the reply instruction of the third instruction is used to indicate a maximum charging current currently supported by the mobile terminal, so as to The adapter determines a charging current corresponding to the fast charging mode according to the reply instruction of the third instruction.
  • the reply instruction of the third instruction includes multiple 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 communications control circuit is specifically configured to receive a fourth instruction from the adapter in the constant current phase, The fourth instruction is used to query a current voltage of a battery in the mobile terminal; the reply instruction of the fourth instruction is sent to the adapter, and the reply instruction of the fourth instruction is used to indicate in the mobile terminal The current voltage of the battery such that the adapter adjusts the output current of the adapter based on the current voltage of the battery.
  • the reply instruction of the fourth instruction includes multiple bits, and the reply command 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 communication control circuit is further configured to send, to the adapter, a path impedance for indicating the mobile terminal Information, so that the adapter determines whether the USB interface is in poor contact according to the path impedance during the constant current phase; and when the adapter determines that the USB interface is in poor contact, receiving a fifth instruction from the adapter, The fifth instruction is used to indicate that the USB interface is in poor contact, and the adapter is ready to exit the fast charging mode or restart the fast charging communication process.
  • the fifth instruction is 10110010 or 0xB2.
  • the communications control circuit is further configured to: when the adapter determines that a reply command received from the mobile terminal occurs When the encoding is incorrect, perform at least one of the following operations: exit the fast charging Mode, stop charging or re-open the fast charging communication process.
  • the instruction sent by the mobile terminal to the adapter includes multiple bits, and the mobile terminal sends any When the instruction is performed, 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 adapter includes a plurality of bits, when the mobile terminal receives an instruction, The MSB of the plurality of bits of the certain instruction is received first.
  • the clock signal during communication between the adapter and the mobile terminal is provided by the adapter.
  • the instruction that the adapter sends to the mobile terminal includes a plurality of bits, among the multiple bits
  • the adapter In the process of transmitting each bit, the adapter first sends the each bit, and then sends a clock interrupt signal; or the reply command received by the adapter from the mobile terminal includes a plurality of bits, in the multiple bits
  • the adapter In the process of receiving each bit, the adapter first sends a clock interrupt signal, then delays the preset time interval, and then receives each bit.
  • each of the instructions sent by the adapter to the mobile terminal includes 8 bits of data, and the adapter passes And transmitting the 8 bits of data to the mobile terminal for consecutive 8 clock cycles of the clock signal, wherein the first 10 us of each of the consecutive 8 clock cycles is a low level, and the last 500 us is a high level; or each reply command received by the adapter from the mobile terminal includes 10 bits of data, the adapter receiving the 10 from the mobile terminal for 10 consecutive clock cycles of the clock signal The data of the bits, the first 500us of each of the consecutive 10 clock cycles is high, and the last 10us is low.
  • the high level of the clock signal in the process of the adapter receiving an instruction from the mobile terminal The minimum value is VDD-0.7V of the adapter; or, in the process of receiving the instruction from the mobile terminal by the adapter, the maximum value of the low level of the clock signal is 0.8V; or, in the adapter
  • 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 adapter sends an instruction to the mobile terminal, the clock signal
  • the maximum value of the high level is 4.5V; or, in the process of the adapter sending an instruction to the mobile terminal, the maximum value of the low level of the clock signal is 0.15VDD; Where VDD is the operating voltage of the adapter, and / or 3.2V ⁇ VDD ⁇ 4.5V.
  • the adapter after the mobile terminal receives the clock interrupt signal, the adapter sends an instruction to the mobile terminal
  • the retention time of the data in the data is 500 ⁇ 5us.
  • an adapter is provided, the adapter being connected to a mobile terminal via a universal serial bus USB interface, wherein a power line in the USB interface is used by the adapter to charge a battery of the mobile terminal, the USB interface a data line for communication between the adapter and the mobile terminal, the adapter supporting a normal charging mode and a fast charging mode, wherein a charging speed of the fast charging mode is greater than a charging speed of the normal charging mode,
  • the adapter includes a communication control circuit and a charging circuit, and the communication control circuit is specifically configured to: when receiving, from the mobile terminal, indication information indicating that the mobile terminal has completed identification of the type of the adapter, enabling fast charging communication a process of transmitting a first instruction to the mobile terminal, the first instruction being used to query whether the mobile terminal agrees to use the fast charging mode to charge the battery; and receiving, by the mobile terminal, the first instruction Responding to the instruction, the reply instruction of the first instruction is used to indicate that the mobile terminal agrees to use the fast charge
  • the mode is to charge
  • the communication control circuit is further configured to detect a charging current provided by the adapter for the mobile terminal; when the indication is not received from the mobile terminal Information, but detecting that the charging current provided by the adapter for the mobile terminal is greater than or equal to a preset current threshold for a preset duration, determining that the mobile terminal has completed identification of the type of the adapter, opening the location Describe a fast charging communication process, and send the first instruction to the mobile terminal.
  • 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 adapter to determine the The contact of the USB interface is good.
  • the first instruction is 10101000, or 0xA8.
  • 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 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 indicate The current output voltage of the adapter is suitable, high or low; when the reply command of the second instruction indicates that the current output voltage of the adapter is appropriate, determining the current output voltage of the adapter as the fast charging mode Corresponding charging voltage; when the reply command of the second instruction indicates that the current output voltage of the adapter is high or low, adjusting the current output voltage of the 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 adapter until the second instruction Instruct the multiplexing adapter output current until the appropriate voltage.
  • the reply instruction of the second instruction includes a plurality of bits, and the reply command of the second instruction is more
  • the bits include bits for indicating that the current output voltage of the adapter is suitable, high or low.
  • the second instruction is 10100100, or 0xA4.
  • the communications control circuit is specifically configured to send the third instruction to the mobile terminal,
  • the third instruction is configured 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 charging current; determining the charging current of the fast charging mode according to the return command of the third instruction.
  • 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 communication control circuit is specifically configured to send a fourth instruction to the mobile terminal in the constant current phase
  • 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, where the reply instruction of the fourth instruction is used to indicate the movement
  • the current voltage of the battery in the terminal the output current of the adapter is adjusted according to the current voltage of the battery.
  • the reply instruction of the fourth instruction includes multiple bits, and the multiple 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 communications control circuit is further configured to receive, by the mobile terminal, the mobile terminal Impedance information of the path impedance; in the constant current phase, determining a charging loop impedance of the adapter to the battery according to a current output voltage of the adapter and a current voltage of the battery; according to the charging loop impedance, a path impedance of the mobile terminal, and a path impedance of the charging line line between the adapter and the mobile terminal, determining whether the USB interface is in poor contact; and when the USB interface is in poor contact, exiting the fast charging Mode or re-determine whether to enable the fast charge mode.
  • the communications control circuit is further configured to: when the USB interface is in poor contact, send the mobile terminal 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 adapter is ready to exit the fast charging mode or re-determine whether to enable the fast charging mode.
  • the fifth instruction is 10110010 or 0xB2.
  • the communications control circuit is further configured to: when the adapter determines that a reply command received from the mobile terminal occurs When the encoding is incorrect, at least one of the following operations is performed: exiting the fast charging mode, stopping charging, or restarting the fast charging communication flow.
  • the instruction that the adapter sends to the mobile terminal includes multiple bits, and the adapter sends any instruction Transmitting the most significant bit MSB of the plurality of bits of any of the instructions; or the instruction received by the adapter from the mobile terminal includes a plurality of bits, and the adapter first receives an instruction when receiving an instruction The MSB of the plurality of bits of the instruction.
  • the clock signal or the clock interrupt signal in the communication process between the adapter and the mobile terminal is provided by the adapter .
  • the instruction that the adapter sends to the mobile terminal includes a plurality of bits, among the multiple bits
  • the adapter In the process of transmitting each bit, the adapter first sends the each bit, and then sends a clock interrupt signal; or the reply command received by the adapter from the mobile terminal includes a plurality of bits, in the multiple bits
  • the adapter In the process of receiving each bit, the adapter first sends a clock interrupt signal, then delays the preset time interval, and then receives each bit.
  • each instruction sent by the adapter to the mobile terminal comprises 8 bits of data, the adapter transmitting the 8 bits to the mobile terminal through consecutive 8 clock cycles of the clock signal Data, the first 10us of each of the consecutive 8 clock cycles is a low level, and the last 500us is a high level; or, each of the reply commands received by the adapter from the mobile terminal includes 10 Bit data, the adapter receiving the 10 bits of data from the mobile terminal through consecutive 10 clock cycles of the clock signal, the first 500 us of each of the consecutive 10 clock cycles being High level, after 10us is low level.
  • the high level of the clock signal in the process of the adapter receiving an instruction from the mobile terminal The minimum value is VDD-0.7V of the adapter; or, in the process of receiving the instruction from the mobile terminal by the adapter, the maximum value of the low level of the clock signal is 0.8V; or, in the adapter
  • 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 adapter sends an instruction to the mobile terminal, the clock signal
  • the maximum value of the high level is 4.5V; or, during the process in which the adapter sends an instruction to the mobile terminal, the maximum value of the low level of the clock signal is 0.15 VDD; wherein VDD is the adapter The operating voltage, and / or 3.2V ⁇ VDD ⁇ 4.5V.
  • the adapter after the mobile terminal receives the clock interrupt signal, the adapter sends an instruction to the mobile terminal
  • the retention time of the data in the data is 500 ⁇ 5us.
  • the adapter does not blindly increase the output current for fast charging, but needs to communicate with the mobile terminal to negotiate whether the fast charging mode can be adopted, and the safety of the fast charging process is improved compared with the prior art.
  • FIG. 1 is a diagram showing an example of a fast charge flow according to an embodiment of the present invention.
  • FIG. 2 is a diagram showing an example of a fast charging method according to an embodiment of the present invention.
  • FIG. 3 is a diagram showing an example of performing data transmission and reception once by an adapter according to an embodiment of the present invention.
  • FIG. 4 is a diagram showing an example of communication timing of an adapter according to an embodiment of the present invention.
  • Fig. 5 is a diagram showing an example of communication timing of an 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 structural view of an adapter according to an embodiment of the present invention.
  • FIG. 1 is a diagram showing an example of a fast charge flow according to an embodiment of the present invention.
  • the fast charging communication process can be roughly divided into the following five stages:
  • the mobile terminal can detect the adapter type through D+, D-, and when detecting that the adapter is a non-USB type charging device, the current absorbed by the mobile terminal can be greater than a preset current threshold I2.
  • the adapter detects that the adapter output current is greater than or equal to I2 within the preset duration (for example, may be continuous T1 time)
  • the adapter considers that the terminal has completed the identification of the adapter type, and the adapter opens the handshake communication between the adapter and the mobile terminal, the adapter Sending a first command asks the terminal whether to enable the fast charging mode.
  • the adapter When the adapter receives the reply instruction of the mobile terminal to indicate that the mobile terminal does not agree to enable the fast charging mode, the output current of the adapter is detected again. When the output current of the adapter is still greater than or equal to I2, the request is re-initiated, and the mobile terminal is asked whether to open quickly. In the charging mode, the above steps of phase 1 are repeated until the mobile terminal replies to agree to turn on the fast charging mode, or the output current of the adapter no longer satisfies the condition of greater than or equal to I2.
  • the fast charging communication process enters phase 2.
  • the voltage output by the adapter may include a plurality of gear positions, and the adapter may send a second command to the mobile terminal to inquire whether the output voltage of the adapter of the mobile terminal matches (or is suitable, that is, whether it is suitable as a charging voltage in the fast charging mode).
  • the mobile terminal replies to the adapter that its output voltage is high, low, or matched, and if the adapter receives feedback from the mobile terminal that the output voltage of the adapter is high or low, the adapter will The output voltage is adjusted to a grid position, and the second command is sent to the mobile terminal again to re-inquire whether the output voltage of the adapter of the mobile terminal matches.
  • the adapter sends a third instruction to the mobile terminal to query the maximum charging current currently supported by the mobile terminal, and the mobile terminal replies to the maximum charging current currently supported by the mobile terminal of the adapter, and enters phase 4.
  • the adapter can set its output current to the maximum charging current currently supported by the mobile terminal, entering the constant current phase, phase 5.
  • the adapter may send a fourth command every time interval to query the current voltage of the mobile terminal battery, and the mobile terminal may feed back the current voltage of the mobile terminal battery to the adapter, and the adapter may be based on the mobile terminal battery of the mobile terminal.
  • the feedback of the current voltage determines whether the USB contact is good and whether it is necessary to lower the current charging current value of the mobile terminal.
  • the adapter determines that the USB contact is bad, the fifth command is sent to the mobile terminal, and then reset to re-enter phase 1.
  • the constant current phase does not mean that the output current of the adapter remains constant in phase 5, and the constant current is a piecewise constant current, that is, remains constant for a period of time.
  • the above fast charging communication process is based on mutual negotiation between the adapter and the power supply, and can effectively ensure the safety of fast charging.
  • the adapter acts as a host and actively handshaking with the mobile terminal.
  • the adapter first determines whether to initiate a fast charge communication process, and after the fast charge communication process is initiated, actively sends an instruction to the mobile terminal.
  • the condition that the adapter initiates the fast charge communication process is that when the adapter detects that the adapter output current is greater than or equal to I2 within the preset time period, when the adapter detects that the condition is satisfied, the adapter considers that the identification of the adapter type by the mobile terminal has been completed, that is, It has been recognized that the type of the adapter is a non-USB type (or the adapter has been identified as a standard charging device, not a non-standard charging device such as a computer, or it has been recognized that the adapter is not a computer, that is, a non-USB type charging device may refer to the charging device It is a type of charging device other than a computer).
  • This detection method can maintain the host status of the adapter and simplify the fast charge communication process. But this way is a kind Similar to blind detection, that is, the adapter "guess" the mobile terminal has completed the identification of the adapter type.
  • This blind detection method may sometimes have certain errors, for example, when the mobile charging stream of some mobile terminals is I2 (or I2 or so).
  • the current detected by the adapter may have an error. It is detected that the charging current of the mobile terminal is less than I2. This may cause the mobile terminal to be unable to turn on the fast charging communication at all times, and thus can only be charged by the standard charging method.
  • the mobile terminal after identifying that the type of the adapter is a non-USB type, the mobile terminal sends an indication message to the adapter, for example, may be a serial code, indicating that the adapter has completed type identification, triggering the adapter to enable fast charging communication.
  • an indication message for example, may be a serial code, indicating that the adapter has completed type identification, triggering the adapter to enable fast charging communication.
  • Figure 2 includes the following steps:
  • Step A The mobile terminal detects the adapter insertion and completes the adapter type detection.
  • Step B When the detected adapter type is non-USB, and it detects that the self state meets the fast charge condition, a serial code is sent through the D+ data line in the USB interface to inform the adapter that the type identification of the adapter has been completed.
  • the adapter type identifies the main process: a high level at D+, and a standard charger type (non-USB type) if it can receive a high level at D-. Since the adapter supporting the fast charging mode has an MCU inside in the embodiment of the present invention, the MCU and the mobile terminal maintain communication through the data line in the USB interface during charging, and therefore, as specified in the BC1.2 protocol, D+ and D- are shorted. At this time, in order to prevent the mobile terminal from having an adapter type identification error, D- can be kept at a high level, and the serial code in the embodiment of the present invention can be transmitted through D+.
  • Step C If the adapter is an adapter that supports the fast charging mode, and the adapter receives the serial code sent by the mobile terminal, initiates a fast charging request to the mobile terminal, and enters the fast charging communication process.
  • Step D If the adapter is an adapter that supports the fast charging mode, and the adapter has detected that the charging current is greater than the preset charging current in the preset time interval before receiving the serial code sent by the mobile terminal, Waiting for the mobile terminal to send the serial code, directly send the fast charge request, and enter the fast charge communication process.
  • Embodiments of the present invention are described in more detail below with reference to specific examples. It should be noted that the examples of FIG. 3 to FIG. 5 are merely for facilitating the understanding of the embodiments of the present invention, and the embodiments of the present invention are not limited to the specific numerical values or specific examples illustrated. A person skilled in the art will be able to make various modifications or changes in the embodiments according to the examples of FIG. 3 to FIG. 5, and such modifications or variations are also within the scope of the embodiments of the present invention.
  • a fast charge communication instruction set between the adapter and the mobile terminal can be defined.
  • the fast communication instruction set is as shown in Table 1 below:
  • each communication is first transmitted by the adapter with 8-bit data, and then the mobile terminal replies with 10-bit data, and the data is transmitted.
  • the adapter sends data, it can send the high bit (MSB) first.
  • MSB high bit
  • the adapter also receives the high bit (MSB) first.
  • the clock sent and received by the adapter can be provided by the adapter.
  • each bit of data is sent before the CLK interrupt is sent, which ensures the accuracy of the data received by the mobile terminal.
  • the adapter can first Send the CLK interrupt signal, delay the data for a certain period of time, so as to ensure the accuracy and reliability of the data received by the adapter.
  • FIG. 3 is a diagram showing an example of performing data transmission and reception once by an adapter according to an embodiment of the present invention.
  • the first n bits of the data can be defined as 101.
  • the received data is defined to be 10 bits in advance, and if the received data is not 10 bits, the data is determined to be illegal data, and the communication fails.
  • FIG. 4 is a diagram showing an example of communication timing of an adapter.
  • the relationship between the communication timing indicated by the clock signal in the D+ data line and the data transmission in the D-data line can be clearly seen from FIG. Figure 5 shows a specific example.
  • the adapter sends an instruction 10101000 to the mobile terminal, it receives a reply command 1011001111 from the mobile terminal.
  • the mobile terminal and the adapter of the embodiment of the present invention are described in detail below with reference to FIG. 6 to FIG. 7. It should be understood that the mobile terminal and the adapter described on the device side correspond to the method side, and the repeated description is omitted as appropriate for brevity.
  • 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 an adapter through a USB interface, and a power line in the USB interface is used to charge a battery of the mobile terminal 600, and a data line in the USB interface is used for the mobile terminal 600 and the The adapter communicates, the mobile terminal 600 supports a normal charging mode and a fast charging mode, wherein the charging speed of the fast charging mode is greater than the charging speed of the normal charging mode, the mobile terminal 600 includes a communication control circuit 610 and charging Circuit 620,
  • the communication control circuit 610 is configured to determine a type of the adapter after detecting that the adapter is connected to the mobile terminal 600, and send an indication information to the adapter when determining that the type of the adapter is a non-USB type
  • the indication information is used to indicate that the mobile terminal 600 has completed identification of the type of the adapter to trigger the adapter to enable a fast charge communication flow; after the adapter turns on the fast charge communication flow, from the
  • the adapter receives a first instruction for querying whether the mobile terminal 600 agrees to use the fast charging mode to charge the battery; sending a reply command of the first instruction to the adapter, the first An instruction reply command is used to instruct the mobile terminal 600 to agree to use the fast charging mode to charge the battery; a second instruction sent by the adapter performs handshake communication with the adapter to determine the fast charging mode Corresponding charging voltage; a third instruction sent by the adapter performs handshake communication with the adapter to determine Said charging current corresponding to the fast charge mode; in the adapter Adjusting the output
  • the adapter does not blindly increase the output current for fast charging, but needs to communicate with the mobile terminal to negotiate whether the fast charging mode can be adopted, which improves the security of the fast charging process compared with the prior art. .
  • the reply instruction of the first instruction includes a plurality of bits, where the multiple bits include a bit for indicating whether the mobile terminal 600 agrees to enable the fast charging mode, and A bit indicating the path impedance of the mobile terminal 600, the path impedance of the mobile terminal 600 is used by the adapter to determine whether the contact of the USB interface is good.
  • the first instruction is 10101000, or 0xA8.
  • the communication control circuit 610 is specifically configured to receive the second instruction from the adapter, where the second instruction is used to query whether the current output voltage of the adapter is suitable as the fast a charging voltage of the charging mode; transmitting a reply instruction of the second instruction to the adapter, the reply instruction of the second instruction is used to indicate that the current output voltage of the adapter is suitable, high or low, so that the adapter And determining, according to the reply instruction of the second instruction, a charging voltage corresponding to the fast charging mode.
  • the second instruction is 10100100, or 0xA4.
  • the communication control circuit 610 is specifically configured to receive, by the adapter, the third instruction, where the third instruction is used to query a maximum charging current currently supported by the mobile terminal 600;
  • the 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 adaptation And determining, according to the reply instruction of the third instruction, a charging current corresponding to the fast charging mode.
  • the reply instruction of the third instruction includes multiple bits, and the multiple bits in the reply instruction of the third instruction include a maximum charging current that is used to indicate that the mobile terminal 600 currently supports Bits.
  • the third instruction is 10100110 or 0xA6.
  • the communication control circuit 610 is specifically configured to receive, at the constant current stage, a fourth instruction from the adapter, where the fourth instruction is used to query a battery in the mobile terminal 600. a current voltage; a reply command of the fourth command is sent to the adapter, 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 adapter is according to the battery Current voltage, adjusting the output current of the adapter.
  • the reply instruction of the fourth instruction includes a plurality of bits, and the plurality of bits in the reply instruction of the fourth instruction include a bit for indicating a current voltage of the battery, and The bit that describes whether the battery is charging.
  • the fourth instruction is 10100010 or 0xA2.
  • the communication control circuit 610 is further configured to send, to the adapter, information indicating a path impedance of the mobile terminal 600, so that the adapter is in the constant current phase according to the The path impedance determines whether the USB interface is in poor contact; when the adapter determines that the USB interface is in poor contact, receiving a fifth instruction from the adapter, the fifth instruction is used to indicate that the USB interface is in poor contact, The adapter is ready to exit the fast charging mode or re-enable the fast charging communication process.
  • the fifth instruction is 10110010 or 0xB2.
  • the communication control circuit 610 is further configured to: when the adapter determines that an error occurs in the reply command received from the mobile terminal 600, perform at least one of the following operations: exiting the Said fast charging mode, stop charging or re-open the fast charging communication Process.
  • the instruction sent by the mobile terminal 600 to the adapter includes multiple bits, and when the mobile terminal 600 sends any instruction, first sends multiple bits of the any instruction.
  • the most significant bit MSB; or the instruction received by the mobile terminal 600 from the adapter includes a plurality of bits, and the mobile terminal 600 first receives a certain instruction in a plurality of bits of the certain instruction when receiving an instruction MSB.
  • a clock signal during communication between the adapter and the mobile terminal 600 is provided by the adapter.
  • the instruction sent by the adapter to the mobile terminal 600 includes multiple bits, and in the process of sending each of the multiple bits, the adapter sends the first a bit, resending a clock interrupt signal; or the reply command received by the adapter from the mobile terminal 600 includes a plurality of bits, the adapter first transmitting during the reception of each of the plurality of bits The clock interrupts the signal and then delays the preset time interval to receive each of the bits.
  • each instruction sent by the adapter to the mobile terminal 600 includes 8 bits of data, and the adapter transmits the mobile terminal to the mobile terminal through consecutive 8 clock cycles of the clock signal. 600 transmitting the 8 bits of data, the first 10 us of each of the consecutive 8 clock cycles being a low level, and the last 500 us being a high level; or the adapter is from the mobile terminal 600
  • Each of the received reply instructions includes 10 bits of data, and the adapter receives the 10 bits of data from the mobile terminal 600 for 10 consecutive clock cycles of the clock signal, the consecutive 10 clock cycles The first 500us of each clock cycle is high, and the last 10us is low.
  • a minimum value of a high level of the clock signal is VDD-0.7V of the adapter; or In the process of receiving an instruction from the mobile terminal 600, the maximum value of the low level of the clock signal is 0.8V; or, in the process of the adapter transmitting an instruction to the mobile terminal 600, the clock The minimum value of the high level of the signal is 0.25 VDD + 0.8 V; or, in the process of the adapter transmitting an instruction to the mobile terminal 600, the maximum value of the high level of the clock signal is 4.5 V; or In a process in which the adapter sends an instruction to the mobile terminal 600, a maximum value of a low level of the clock signal is 0.15 VDD; wherein VDD is an operating voltage of the adapter, and/or 3.2 V ⁇ VDD ⁇ 4.5V.
  • the data in the instruction sent by the adapter to the mobile terminal 600 has a hold time of 500 ⁇ 5 us.
  • FIG. 7 is a schematic block diagram of an adapter in accordance with an embodiment of the present invention.
  • the adapter 700 of FIG. 7 is connected to the mobile terminal via a USB interface, and a power cord in the USB interface is used for the adapter 700 to charge a battery of the mobile terminal, and a data line in the USB interface is used for the adapter 700 Communicating with the mobile terminal, the adapter 700 supports a normal charging mode and a fast charging mode, wherein the charging speed of the fast charging mode is greater than the charging speed of the normal charging mode, the adapter 700 includes a communication control circuit 710 and Charging circuit 720,
  • the communication control circuit 710 is specifically configured to: when receiving, from the mobile terminal, indication information indicating that the mobile terminal has completed identification of the type of the adapter 700, start a fast charging communication process to the mobile terminal Sending a first instruction, the first instruction is used to query whether the mobile terminal agrees to use the fast charging mode to charge the battery; receiving a reply instruction of the first instruction from the mobile terminal, the first The command output command is used to instruct the mobile terminal to agree to use the fast charging mode to charge the battery; perform handshake communication with the mobile terminal by using a second instruction to determine a charging voltage corresponding to the fast charging mode; The third instruction performs handshake communication with the mobile terminal to determine a charging current corresponding to the fast charging mode; and adjusts the output voltage and the output current to a charging voltage and a charging current corresponding to the fast charging mode to enter a constant current phase; In the constant current phase, performing handshake communication with the mobile terminal by using a fourth instruction to adjust the adaptation Output current 700, so that the charging circuit 720 to charge the mobile terminal in the form
  • the adapter does not blindly increase the output current for fast charging, but needs to communicate with the mobile terminal to negotiate whether the fast charging mode can be adopted, which improves the security of the fast charging process compared with the prior art. .
  • the communication control circuit 710 is further configured to detect a charging current that is provided by the adapter 700 for the mobile terminal; when the indication information is not received from the mobile terminal, but is detected When the charging current provided by the adapter 700 for the mobile terminal is greater than or equal to a preset current threshold for a preset duration, it is determined that the mobile terminal has completed identification of the type of the adapter 700, and the fast charging is enabled. a communication flow that sends the first instruction to the mobile terminal.
  • the reply instruction of the first instruction includes multiple bits, where The plurality of bits includes a bit for indicating whether the mobile terminal agrees to turn on the fast charging mode, and a bit for indicating a path impedance of the mobile terminal, the path impedance of the mobile terminal is used by the adapter 700 to determine Is the contact of the USB interface good?
  • the first instruction is 10101000, or 0xA8.
  • the communication control circuit 710 is specifically configured to send the second instruction to the mobile terminal, where the second instruction is used to query whether the current output voltage of the adapter 700 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 adapter 700 is suitable, high or low
  • the reply instruction of the second instruction indicates that the current output voltage of the adapter 700 is appropriate, determining a current output voltage of the adapter 700 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 adapter 700 is high or low, adjusting the current output voltage of the adapter 700 according to the reply instruction of the second instruction, and repeatedly performing the handshake communication process based on the second instruction, Constantly adjusting the current output voltage of the adapter 700 until the reply command of the second instruction indicates the adapter 700 Suitable until the output voltage.
  • the reply instruction of the second instruction includes a plurality of bits, and the plurality of bits in the reply instruction of the second instruction include: indicating that the current output voltage of the adapter 700 is appropriate, partial High or low bit.
  • the second instruction is 10100100, or 0xA4.
  • the communications control circuit 710 is specifically configured to send the third instruction to the mobile terminal, where the third command is used to query a maximum charging current currently supported by the mobile terminal; 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; The reply command of the third instruction determines the charging current of the fast charging mode.
  • the reply instruction of the third instruction includes multiple bits, and the multiple bits in the reply instruction of the third instruction include a maximum charging current that is used to indicate that the mobile terminal currently supports Bit.
  • the format of the reply instruction of the third instruction is 1010XXXXXX, where X represents 1 bit, and the maximum charging current currently supported by the mobile terminal is 3000+(XXXXX*250) mA.
  • the third instruction is 10100110 or 0xA6.
  • the communications control circuit 710 is specifically configured to send, in the constant current phase, a fourth instruction to the mobile terminal, where the fourth command is used to query a battery in the mobile terminal.
  • the reply instruction of the fourth instruction is used to indicate a current voltage of a battery in the mobile terminal; according to a current voltage of the battery, The output current of the adapter 700 is adjusted.
  • the reply instruction of the fourth instruction includes a plurality of bits, and the plurality of bits in the reply instruction of the fourth instruction include a bit for indicating a current voltage of the battery, and The bit that describes whether the battery is charging.
  • the fourth instruction is 10100010 or 0xA2.
  • the communication control circuit 710 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 adapter 700 a current output voltage and a current voltage of the battery, determining a charging loop impedance of the adapter 700 to the battery; according to the charging loop impedance, a path impedance of the mobile terminal, and the adapter 700 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, exits the fast charging mode or re-determines whether the fast charging mode is turned on.
  • the communication control circuit 710 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 Bad, the adapter 700 is ready to exit the fast charging mode or re-determine Whether to enable the fast charging mode.
  • the fifth instruction is 10110010 or 0xB2.
  • the communication control circuit 710 is further configured to: when the adapter 700 determines that an error occurs in a reply command received from the mobile terminal, performing at least one of the following operations: exiting the The fast charging mode, stop charging or re-open the fast charging communication process.
  • the instruction sent by the adapter 700 to the mobile terminal includes multiple bits, and the adapter 700 sends one of the multiple bits of the any instruction when sending any instruction.
  • the most significant bit MSB; or the instruction received by the adapter 700 from the mobile terminal includes a plurality of bits, and the adapter 700 first receives an MSB of a plurality of bits of the certain instruction when receiving an instruction.
  • a clock signal or a clock interrupt signal during communication between the adapter 700 and the mobile terminal is provided by the adapter 700.
  • the instruction sent by the adapter 700 to the mobile terminal includes multiple bits, and during each of the multiple bits, the adapter 700 first sends the And retransmitting a clock interrupt signal for each bit; or the reply command received by the adapter 700 from the mobile terminal includes a plurality of bits, the adapter 700 during the receiving of each of the plurality of bits The clock interrupt signal is sent first, then the preset time interval is delayed, and each bit is received.
  • each instruction sent by the adapter 700 to the mobile terminal includes 8 bits of data, and the adapter 700 moves to the mobile by consecutive 8 clock cycles of the clock signal. Transmitting, by the terminal, the data of the 8 bits, the first 10us of each of the consecutive 8 clock cycles is a low level, and the last 500us is a high level; or the adapter 700 is from the mobile terminal.
  • Each of the received reply commands includes 10 bits of data, and the adapter 700 receives the 10 bits of data from the mobile terminal for 10 consecutive clock cycles of the clock signal, the consecutive 10 clock cycles The first 500us of each clock cycle is high, and the last 10us is low.
  • a minimum value of a high level of the clock signal is VDD-0.7V of the adapter 700; or, The maximum value of the low level of the clock signal is 0.8V during the process of the adapter 700 receiving an instruction from the mobile terminal; or, the adapter 700 sends a finger to the mobile terminal.
  • the minimum value of the high level of the clock signal is 0.25 VDD + 0.8 V; or, in the process of the adapter 700 transmitting an instruction to the mobile terminal, the high level of the clock signal
  • the maximum value is 4.5V; or, in the process in which the adapter 700 sends an instruction to the mobile terminal, the maximum value of the low level of the clock signal is 0.15 VDD; wherein VDD is the operating voltage of the adapter 700 , and / or 3.2V ⁇ VDD ⁇ 4.5V.
  • the data in the instruction sent by the adapter 700 to the mobile terminal has a hold time of 500 ⁇ 5 us.
  • 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. Based on such understanding, the present invention
  • the technical solution in essence or the part contributing to the prior art or part of the technical solution may be embodied in the form of a software product stored in a storage medium, including a plurality of instructions for making one
  • the computer device (which may be a personal computer, server, or network device, etc.) performs 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. .

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Abstract

快速充电方法,移动终端(600)和适配器(700),移动终端(600)完成适配器(700)的类型的识别之后,向适配器(700)发送指示信息,指示已完成适配器(700)的类型识别,以触发适配器(700)发起快充通信流程,然后适配器(700)通过快充通信流程与移动终端(600)协商充电参数,并采用分段恒流的方式为移动终端(600)的电池充电,保证了快速充电过程的安全可靠。

Description

快速充电方法、移动终端和适配器 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、移动终端和适配器。
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
本申请提供一种快速充电方法、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,所述方法应用于移动终端,所述移动终端与适配器通过USB接口相连,所述USB接口中的电源线用于为所述移动终端的电池充电,所述USB接口中的数据线用于所述移动终端和所述适配器进行通信,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速度大于所述普通充电模式的充电速度,所述方法包括:在检测到所述适配器与所述移动终端连接之后,所述移动终端确定所述适配器的类型;当确定所述适配器的类型为非USB类型时,所述移动终端向所述适配器发送指示信息,所述指示信息用于指示所述移动终端已完成所述适配器的类型的识别,以触发所述适配器开启快充通信流程;在所述适配器开启所述快充通信流程之后,所述移动终端从所述适配器接收第一指令,所述第一指令用于询问所述移动终端是否同意使用所述快速充电模式为所述电池充电;所述移动终端向所述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使用所述快速充电模式为所述电池充电;所述移动终端通过所述适配器发送的第二指令与所述适配 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适配器发送的第三指令与所述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适配器发送的第四指令与所述适配器进行握手通信,以便所述适配器调整输出电流,以分段恒流的形式为所述电池充电。
结合第一方面,在第一方面的第一种实现方式中,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使用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适配器确定所述USB接口的接触是否良好。
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,所述第一指令为10101000,或0xA8。
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,所述移动终端通过所述适配器发送的第二指令与所述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适配器接收所述第二指令,所述第二指令用于询问所述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适配器的当前输出电压合适、偏高或偏低,以便所述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表示所述适配器的当前输出电压合适,XX=10表示所述适配器的当前输出电压偏高,XX=01表示所述适配器的当前输出电压偏低。
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,所述第二指令为10100100,或者0xA4。
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,所述移动终端通过所述适配器发送的第三指令与所述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,所述第三指令为10100110或0xA6。
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,所述移动终端通过所述适配器发送的第四指令与所述适配器进行握手通信,以便所述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,以便所述适配器根据所述电池的当前电压,调整所述适配器的输出电流。
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,所述第四指令为10100010或0xA2。
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:所述移动终端向所述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;当所述适配器确定所述USB接口接触不良时,所述移动终端从所述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,所述适配器准备退出快速充电模式或重新开启所述快充通信流程。
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,所述第五指令为10110010或0xB2。
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:当所述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、停止充电或重新开启所述快充通信流程。
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,所述移动终端向所述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,所述适配器与所述移动终端通信过程中的时钟信号均由所述适配器提供。
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适配器的VDD-0.7V;或者,在所述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为所述适配器的工作电压,和/或3.2V<VDD<4.5V。
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,所述移动终端收到所述时钟中断信号之后,所述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。
第二方面,提供一种快速充电方法,所述方法应用于适配器,所述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适配器为所述移动终端的电池充电,所述USB接口中的数据线用于所述适配器和所述移动终端进行通信,所述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速度大于所述普通充电模式的充电速度,所述方法包括:当从所述移动终端接收到用于指示所述移动终端已完成所述适配器的类型的识别的指示信息时,所述适配器开启快充通信流程,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同意使用所述快速充电模式为所述电池充电;所述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使用所述快速充电模式为所述电池充电;所述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 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。
结合第二方面,在第二方面的一种实现方式中,所述方法还包括:所述适配器检测所述适配器为所述移动终端提供的充电电流;当未从所述移动终端接收到所述指示信息,但检测到所述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,所述适配器确定所述移动终端已经完成所述适配器的类型的识别,开启所述快充通信流程,向所述移动终端发送所述第一指令。
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,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使用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适配器确定所述USB接口的接触是否良好。
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,所述第一指令为10101000,或0xA8。
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适配器的当前输出电压合适时,所述适配器将所述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适配器的当前输出电压偏高或偏低时,所述适配器根据所述第二指令的回复指令,调整所述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适配器的当前输出电压合适为止。
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适配器的当前输出电压合适、偏高或偏低的比特。
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表示所述适配器的当前输出电压合适,XX=10表示所述适配器的当前输出电压偏高,XX=01表示所述适配器的当前输出电压偏低。
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,所述第二指令为10100100,或者0xA4。
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,所述第三指令为10100110或0xA6。
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,所述在所述恒流阶段,所述适配器通过第四指令与所述移动终端进行握手通信,以调整所述适配器的输出电流,包括:在所述恒流阶段,所述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;所述适配器根据所述电池的当前电压,调整所述适配器的输出电流。
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,所述第四指令为10100010或0xA2。
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,所述适配器根据所述适配器的当前输出电压和所述电池的当前电压,确定所述适配器到所述电池的充电回路阻抗;所述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:当所述USB接口接触不良时,所述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,所述第五指令为10110010或0xB2。
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:当所述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、停止充电或重新开启所述快充通信流程。
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,所述适配器向所述移动终端发送的指令包括多个比特,所述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,所述适配器从所述移动终端接收的指令包括多个比特,所述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适配器提供。
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适配器的VDD-0.7V;或者,在所述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为所述适配器的工作电压,和/或3.2V<VDD<4.5V。
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,所述移动终端收到所述时钟中断信号之后,所述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。
第三方面,提供一种移动终端,所述移动终端与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的电池充电,所述USB接口中的数据线用于所述移动终端和所述适配器进行通信,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速度大于所述普通充电模式的充电速度,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在检测到所述适配器与所述移动终端连接之后,确定所述适配器的类型;当确定所述适配器的类型为非USB类型时,向所述适配器发送指示信息,所述指示信息用于指示所述移动终端已完成所述适配器的类型的识别,以触发所述适配器开启快充通信流程;在所述适配器开启所述快充通信流程之后,从所述适配器接收第一指令,所述第一指令用于询问所述移动终端是否同意使用所述快速充电模式为所述电池充电;向所述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使用所述快速充电模式为所述电池充电;通过所述适配器发送的第二指令与所述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;通过所述适配器发送的第三指令与所述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,通过所述适配器发送的第四指令与所述适配器进行握手通信,以便所述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电池充电。
结合第三方面,在第三方面的一种实现方式中,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适配器确定所述USB接口的接触是否良好。
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,所述第一指令为10101000,或0xA8。
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,所述通信控制电路具体用于从所述适配器接收所述第二指令,所述第二指令用于询问所述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适配器的当前输出电压合适、偏高或偏低,以便所述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表示所述适配器的当前输出电压合适,XX=10表示所述适配器的当前输出电压偏高,XX=01表示所述适配器的当前输出电压偏低。
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,所述第二指令为10100100,或者0xA4。
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,所述通信控制电路具体用于从所述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,所述第三指令为10100110或0xA6。
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,所述通信控制电路具体用于在所述恒流阶段,从所述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,以便所述适配器根据所述电池的当前电压,调整所述适配器的输出电流。
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,所述第四指令为10100010或0xA2。
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,所述通信控制电路还用于向所述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;当所述适配器确定所述USB接口接触不良时,从所述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,所述适配器准备退出快速充电模式或重新开启所述快充通信流程。
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,所述第五指令为10110010或0xB2。
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,所述通信控制电路还用于当所述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,执行以下操作中的至少一种:退出所述快速充电 模式、停止充电或重新开启所述快充通信流程。
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,所述移动终端向所述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,所述适配器与所述移动终端通信过程中的时钟信号均由所述适配器提供。
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,在所述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适配器的VDD-0.7V;或者,在所述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为所述适配器的工作电压,和/或3.2V<VDD<4.5V。
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,所述移动终端收到所述时钟中断信号之后,所述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。
第四方面,提供一种适配器,所述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适配器为所述移动终端的电池充电,所述USB接口中的数据线用于所述适配器和所述移动终端进行通信,所述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速度大于所述普通充电模式的充电速度,所述适配器包括通信控制电路和充电电路,所述通信控制电路具体用于当从所述移动终端接收到用于指示所述移动终端已完成所述适配器的类型的识别的指示信息时,开启快充通信流程,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同意使用所述快速充电模式为所述电池充电;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使用所述快速充电模式为所述电池充电;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,以调整所述适配器的输出电流,从而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。
结合第四方面,在第四方面的一种实现方式中,所述通信控制电路还用于检测所述适配器为所述移动终端提供的充电电流;当未从所述移动终端接收到所述指示信息,但检测到所述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,确定所述移动终端已经完成所述适配器的类型的识别,开启所述快充通信流程,向所述移动终端发送所述第一指令。
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适配器确定所述 USB接口的接触是否良好。
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,所述第一指令为10101000,或0xA8。
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适配器的当前输出电压合适时,将所述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适配器的当前输出电压合适为止。
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适配器的当前输出电压合适、偏高或偏低的比特。
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表示所述适配器的当前输出电压合适,XX=10表示所述适配器的当前输出电压偏高,XX=01表示所述适配器的当前输出电压偏低。
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,所述第二指令为10100100,或者0xA4。
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,所述第三指令为10100110或0xA6。
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,所述通信控制电路具体用于在所述恒流阶段,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,调整所述适配器的输出电流。
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,所述第四指令为10100010或0xA2。
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,根据所述适配器的当前输出电压和所述电池的当前电压,确定所述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,所述第五指令为10110010或0xB2。
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,所述通信控制电路还用于当所述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,执行以下操作中的至少一种:退出所述快速充电模式、停止充电或重新开启所述快充通信流程。
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,所述适配器向所述移动终端发送的指令包括多个比特,所述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,所述适配器从所述移动终端接收的指令包括多个比特,所述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适配器提供。
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,在所述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适配器的VDD-0.7V;或者,在所述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为所述适配器的工作电压,和/或3.2V<VDD<4.5V。
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,所述移动终端收到所述时钟中断信号之后,所述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。
本申请的方案中,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充流程的示例图。
图2是本发明实施例的快速充电方法的示例图。
图3是本发明实施例的适配器进行一次数据收发的示例图。
图4是本发明实施例的适配器的通信时序示例图。
图5是本发明实施例的适配器的通信时序示例图。
图6是本发明实施例的移动终端的示意性结构图。
图7是本发明实施例的适配器的示意性结构图。
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充流程的示例图。
如图1所示,快充的通信流程大致可以分为以下五个阶段:
阶段1:
移动终端可以通过D+、D-检测适配器类型,当检测到适配器为非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。当适配器检测到预设时长(例如,可以是连续T1时间)内适配器输出电流大于或等于I2时,则适配器认为终端对于适配器类型识别已经完成,适配器开启适配器与移动终端之间的握手通信,适配器发送第一指令询问终端是否开启快速充电模式。
当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,则再次检测适配器的输出电流,当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快充后,快充通信流程进入阶段2。
阶段2:
适配器输出的电压可以包括多个档位,适配器可以向移动终端发送第二指令,询问移动终端所述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)。
移动终端答复适配器其输出电压偏高、偏低或匹配,如果适配器接收到所述移动终端关于所述适配器的输出电压偏高或偏低的反馈时,则适配器将 其输出电压调整一格档位,并再次向移动终端发送第二指令,重新询问移动终端所述适配器的输出电压是否匹配。
重复阶段2的以上步骤直到移动终端答复适配器其输出电压合适,进入阶段3。
阶段3:
适配器向移动终端发送第三指令,询问移动终端当前支持的最大充电电流,移动终端答复适配器所述移动终端当前支持的最大充电电流,并进入阶段4。
阶段4:
适配器可以设置其输出电流为所述移动终端当前支持的最大充电电流,进入恒流阶段,即阶段5。
阶段5:
当进入恒流阶段时,适配器可以每间隔一段时间发送一次第四指令,询问移动终端电池的当前电压,移动终端可以向适配器反馈移动终端电池的当前电压,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。当适配器判断为USB接触不良,向移动终端发送第五指令,然后复位以重新进入阶段1。
应理解,恒流阶段并非指适配器的输出电流在阶段5一直保持不变,所谓恒流是分段恒流,即在一段时间内保持不变。
以上快充通信流程是基于适配器和电源之间的相互协商完成的,能够有效保证快充的安全性。
具体而言,整个过程中,适配器一直作为主机,主动与移动终端进行握手。适配器首先确定是否发起快充通信流程,在发起快充通信流程之后,主动向移动终端发送指令。其中,适配器发起快充通信流程的条件是当适配器检测到预设时长内适配器输出电流大于或等于I2,当适配器检测到这一条件满足时,适配器认为移动终端对适配器类型的识别已经完成,即已经识别出适配器的类型为非USB类型(或已经识别出适配器为标准充电装置,并非电脑等非标准充电装置,或已识别出该适配器并非电脑,即非USB类型的充电装置可以指该充电装置为除电脑之外的其他类型的充电装置)。这种检测方式可以维持适配器的主机地位,简化快充通信流程。但这种方式是一种 类似盲检测的方式,即适配器“猜想”移动终端已完成适配器类型的识别,这种盲检测方式有时可能会出现一定的误差,例如,当某些移动终端的标充电流为I2(或I2左右),适配器检测到的电流可能会存在误差,检测到该类移动终端的充电电流小于I2,这样可能导致该类移动终端始终无法开启快充通信,进而只能采用标准充电方式充电。
为了避免上述问题的产生,下面结合图2描述本发明另一实施例的快速充电方法。在图2的实施例中,移动终端在识别完适配器的类型为非USB类型后,向适配器发送指示信息,例如,可以是一段串行码,告知适配器已完成类型识别,触发适配器开启快充通信流程。图2包括如下步骤:
步骤A:移动终端检测到适配器插入,完成适配器类型检测。
步骤B:当检测到的适配器类型为非USB时,并且检测到自身状态满足快充条件时,通过USB接口中的D+数据线发送一段串行码,告知适配器类型已经完成适配器的类型识别。
根据BC1.2协议,适配器类型识别主要过程:在D+发高电平,如果在D-能够收到高电平,就认为是标准充电器类型(非USB类型)。由于本发明实施例中的支持快速充电模式的适配器内部具有MCU,在充电过程中该MCU与移动终端通过USB接口中的数据线保持通信,因此,并未像BC1.2协议规定的那样,对D+和D-进行短接。此时,为了使移动终端不会出现适配器类型识别错误,可以保持D-为高电平,本发明实施例中的串行码可以通过D+发送。
步骤C:如果适配器为支持快速充电模式的适配器,且适配器收到移动终端发送的串行码后,向移动终端发起快充请求,进入快充通信流程。
步骤D:如果适配器为支持快速充电模式的适配器,且适配器在收到移动终端发送的串行码之前,就已经检测到充电电流大于在预设的时间间隔内大于预设的充电电流,可以不再等待移动终端发送串行码,直接发送快充请求,进入快充通信流程。
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5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5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。
首先,可以定义适配器和移动终端之间的快充通信指令集,例如,快速通信指令集如下表一所示:
表1快充通信指令集
Figure PCTCN2016070204-appb-000001
从表1可以看出,每次通信先由适配器发送8比特数据,然后由移动终端回复10比特数据,数据传送时。适配器在数据发送时,可以先发送高位(MSB),同理,适配器在数据接收时,也是先接收高位(MSB)。适配器发送与接收的时钟均可由适配器提供。
适配器在发送数据时,每个bit数据,在CLK中断发送之前发送数据,这样可以保证移动终端接收的数据的准确性。适配器在接收数据时,可以先 发送CLK中断信号,延时一定时间再读取数据,这样可以保证适配器端接收数据的准确性及可靠性。
图3是本发明实施例的适配器进行一次数据收发的示例图。图3中的解析数据是否合法的方式有很多,例如,可以预先定义数据的前n位为101,当适配器收到的数据的前3位不是101时,认定数据为非法数据,通信失败。或者,预先定义接收数据为10比特,如果接收到的数据不是10比特,认定数据为非法数据,通信失败。
图4是适配器的通信时序示例图。从图4可以清楚的看出D+数据线中的时钟信号指示的通信时序与D-数据线中的数据传输的关系。图5给出一个具体的例子,在图5中,适配器向移动终端发送的指令10101000之后,从移动终端接收回复指令1011001111。
下文结合图6至图7,详细描述本发明实施例的移动终端和适配器,应理解,装置侧描述的移动终端和适配器与方法侧对应,为了简洁,适当省略重复的描述。
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600的电池充电,所述USB接口中的数据线用于所述移动终端600和所述适配器进行通信,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速度大于所述普通充电模式的充电速度,所述移动终端600包括通信控制电路610和充电电路620,
所述通信控制电路610用于在检测到所述适配器与所述移动终端600连接之后,确定所述适配器的类型;当确定所述适配器的类型为非USB类型时,向所述适配器发送指示信息,所述指示信息用于指示所述移动终端600已完成所述适配器的类型的识别,以触发所述适配器开启快充通信流程;在所述适配器开启所述快充通信流程之后,从所述适配器接收第一指令,所述第一指令用于询问所述移动终端600是否同意使用所述快速充电模式为所述电池充电;向所述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同意使用所述快速充电模式为所述电池充电;通过所述适配器发送的第二指令与所述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;通过所述适配器发送的第三指令与所述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,通过所述适配器发送的第四指令与所述适配器进行握手通信,以便所述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620为所述电池充电。
本发明实施例中,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600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600通路阻抗的比特,所述移动终端600的通路阻抗用于所述适配器确定所述USB接口的接触是否良好。
可选地,作为一个实施例,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600同意开启所述快速充电模式,X=0表示所述移动终端600不同意开启所述快速充电模式,所述移动终端600的通路阻抗=YYYYYY*5mΩ。
可选地,作为一个实施例,所述第一指令为10101000,或0xA8。
可选地,作为一个实施例,所述通信控制电路610具体用于从所述适配器接收所述第二指令,所述第二指令用于询问所述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适配器的当前输出电压合适、偏高或偏低,以便所述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表示所述适配器的当前输出电压合适,XX=10表示所述适配器的当前输出电压偏高,XX=01表示所述适配器的当前输出电压偏低。
可选地,作为一个实施例,所述第二指令为10100100,或者0xA4。
可选地,作为一个实施例,所述通信控制电路610具体用于从所述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600当前支持的最大充电电流;向所述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600当前支持的最大充电电流,以便所述适配 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600当前支持的最大充电电流的比特。
可选地,作为一个实施例,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600当前支持的最大充电电流=3000+(XXXXXX*250)mA。
可选地,作为一个实施例,所述第三指令为10100110或0xA6。
可选地,作为一个实施例,所述通信控制电路610具体用于在所述恒流阶段,从所述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600内的电池的当前电压;向所述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,以便所述适配器根据所述电池的当前电压,调整所述适配器的输出电流。
可选地,作为一个实施例,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。
可选地,作为一个实施例,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。
可选地,作为一个实施例,所述第四指令为10100010或0xA2。
可选地,作为一个实施例,所述通信控制电路610还用于向所述适配器发送用于指示所述移动终端600的通路阻抗的信息,以便所述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;当所述适配器确定所述USB接口接触不良时,从所述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,所述适配器准备退出快速充电模式或重新开启所述快充通信流程。
可选地,作为一个实施例,所述第五指令为10110010或0xB2。
可选地,作为一个实施例,所述通信控制电路610还用于当所述适配器确定从所述移动终端600接收到的回复指令出现编码错误时,执行以下操作中的至少一种:退出所述快速充电模式、停止充电或重新开启所述快充通信 流程。
可选地,作为一个实施例,所述移动终端600向所述适配器发送的指令包括多个比特,所述移动终端600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600从所述适配器接收的指令包括多个比特,所述移动终端600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。
可选地,作为一个实施例,所述适配器与所述移动终端600通信过程中的时钟信号均由所述适配器提供。
可选地,作为一个实施例,所述适配器向所述移动终端600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,所述适配器从所述移动终端600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。
可选地,作为一个实施例,所述适配器向所述移动终端600发送的每个指令包括8个比特的数据,所述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600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,所述适配器从所述移动终端600接收的每个回复指令包括10个比特的数据,所述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600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。
可选地,作为一个实施例,在所述适配器从所述移动终端600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适配器的VDD-0.7V;或者,在所述适配器从所述移动终端600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,在所述适配器向所述移动终端600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,在所述适配器向所述移动终端600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,在所述适配器向所述移动终端600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为所述适配器的工作电压,和/或3.2V<VDD<4.5V。
可选地,作为一个实施例,所述移动终端600收到所述时钟中断信号之后,所述适配器向所述移动终端600发送的指令中的数据的保持时间为500±5us。
图7是本发明实施例的适配器的示意性框图。图7的适配器700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适配器700为所述移动终端的电池充电,所述USB接口中的数据线用于所述适配器700和所述移动终端进行通信,所述适配器700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速度大于所述普通充电模式的充电速度,所述适配器700包括通信控制电路710和充电电路720,
所述通信控制电路710具体用于当从所述移动终端接收到用于指示所述移动终端已完成所述适配器700的类型的识别的指示信息时,开启快充通信流程,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同意使用所述快速充电模式为所述电池充电;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使用所述快速充电模式为所述电池充电;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,以调整所述适配器700的输出电流,从而以分段恒流的形式通过所述充电电路720为所述移动终端充电。
本发明实施例中,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710还用于检测所述适配器700为所述移动终端提供的充电电流;当未从所述移动终端接收到所述指示信息,但检测到所述适配器700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,确定所述移动终端已经完成所述适配器700的类型的识别,开启所述快充通信流程,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适配器700确定所述USB接口的接触是否良好。
可选地,作为一个实施例,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。
可选地,作为一个实施例,所述第一指令为10101000,或0xA8。
可选地,作为一个实施例,所述通信控制电路710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适配器700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适配器700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适配器700的当前输出电压合适时,将所述适配器700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适配器700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,调整所述适配器700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,不断调整所述适配器700的当前输出电压,直到所述第二指令的回复指令指示所述适配器700的当前输出电压合适为止。
可选地,作为一个实施例,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适配器700的当前输出电压合适、偏高或偏低的比特。
可选地,作为一个实施例,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表示所述适配器700的当前输出电压合适,XX=10表示所述适配器700的当前输出电压偏高,XX=01表示所述适配器700的当前输出电压偏低。
可选地,作为一个实施例,所述第二指令为10100100,或者0xA4。
可选地,作为一个实施例,所述通信控制电路710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。
可选地,作为一个实施例,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。
可选地,作为一个实施例,所述第三指令为10100110或0xA6。
可选地,作为一个实施例,所述通信控制电路710具体用于在所述恒流阶段,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,调整所述适配器700的输出电流。
可选地,作为一个实施例,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。
可选地,作为一个实施例,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。
可选地,作为一个实施例,所述第四指令为10100010或0xA2。
可选地,作为一个实施例,所述通信控制电路710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,根据所述适配器700的当前输出电压和所述电池的当前电压,确定所述适配器700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,以及所述适配器700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。
可选地,作为一个实施例,所述通信控制电路710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,所述适配器700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,所述第五指令为10110010或0xB2。
可选地,作为一个实施例,所述通信控制电路710还用于当所述适配器700确定从所述移动终端接收到的回复指令出现编码错误时,执行以下操作中的至少一种:退出所述快速充电模式、停止充电或重新开启所述快充通信流程。
可选地,作为一个实施例,所述适配器700向所述移动终端发送的指令包括多个比特,所述适配器700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,所述适配器700从所述移动终端接收的指令包括多个比特,所述适配器700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。
可选地,作为一个实施例,所述适配器700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适配器700提供。
可选地,作为一个实施例,所述适配器700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,所述适配器700先发送所述每个比特,再发送时钟中断信号;或者,所述适配器700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,所述适配器700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。
可选地,作为一个实施例,所述适配器700向所述移动终端发送的每个指令包括8个比特的数据,所述适配器700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,所述适配器700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,所述适配器700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。
可选地,作为一个实施例,在所述适配器700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适配器700的VDD-0.7V;或者,在所述适配器700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,在所述适配器700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,在所述适配器700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,在所述适配器700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为所述适配器700的工作电压,和/或3.2V<VDD<4.5V。
可选地,作为一个实施例,所述移动终端收到所述时钟中断信号之后,所述适配器700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 (102)

  1. 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的电池充电,所述USB接口中的数据线用于所述移动终端和所述适配器进行通信,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速度大于所述普通充电模式的充电速度,
    所述方法包括:
    在检测到所述适配器与所述移动终端连接之后,所述移动终端确定所述适配器的类型;
    当确定所述适配器的类型为非USB类型时,所述移动终端向所述适配器发送指示信息,所述指示信息用于指示所述移动终端已完成所述适配器的类型的识别,以触发所述适配器开启快充通信流程;
    在所述适配器开启所述快充通信流程之后,所述移动终端从所述适配器接收第一指令,所述第一指令用于询问所述移动终端是否同意使用所述快速充电模式为所述电池充电;
    所述移动终端向所述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使用所述快速充电模式为所述电池充电;
    所述移动终端通过所述适配器发送的第二指令与所述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适配器发送的第三指令与所述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适配器发送的第四指令与所述适配器进行握手通信,以便所述适配器调整输出电流,以分段恒流的形式为所述电池充电。
  2. 如权利要求1所述的方法,其特征在于,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使用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适配器确定所述USB接口的接触是否良好。
  3. 如权利要求2所述的方法,其特征在于,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。
  4. 如权利要求1-3中任一项所述的方法,其特征在于,所述第一指令为10101000,或0xA8。
  5. 如权利要求1-4中任一项所述的方法,其特征在于,所述移动终端通过所述适配器发送的第二指令与所述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适配器接收所述第二指令,所述第二指令用于询问所述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适配器的当前输出电压合适、偏高或偏低,以便所述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。
  6. 如权利要求5所述的方法,其特征在于,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表示所述适配器的当前输出电压合适,XX=10表示所述适配器的当前输出电压偏高,XX=01表示所述适配器的当前输出电压偏低。
  7. 如权利要求1-6中任一项所述的方法,其特征在于,所述第二指令为10100100,或者0xA4。
  8. 如权利要求1-7中任一项所述的方法,其特征在于,所述移动终端通过所述适配器发送的第三指令与所述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。
  9. 如权利要求8所述的方法,其特征在于,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。
  10. 如权利要求9所述的方法,其特征在于,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。
  11. 如权利要求1-10中任一项所述的方法,其特征在于,所述第三指令为10100110或0xA6。
  12. 如权利要求1-11中任一项所述的方法,其特征在于,所述移动终端通过所述适配器发送的第四指令与所述适配器进行握手通信,以便所述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,以便所述适配器根据所述电池的当前电压,调整所述适配器的输出电流。
  13. 如权利要求12所述的方法,其特征在于,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。
  14. 如权利要求13所述的方法,其特征在于,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。
  15. 如权利要求1-14中任一项所述的方法,其特征在于,所述第四指令为10100010或0xA2。
  16. 如权利要求1-15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;
    当所述适配器确定所述USB接口接触不良时,所述移动终端从所述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,所述适配器准备退出快速充电模式或重新开启所述快充通信流程。
  17. 如权利要求16所述的方法,其特征在于,所述第五指令为10110010或0xB2。
  18. 如权利要求1-17中任一项所述的方法,其特征在于,所述方法还包括:
    当所述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、停止充电或重新开启所述快充通信流程。
  19. 如权利要求1-18中任一项所述的方法,其特征在于,所述移动终端向所述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。
  20. 如权利要求1-19中任一项所述的方法,其特征在于,所述适配器与所述移动终端通信过程中的时钟信号均由所述适配器提供。
  21. 如权利要求20所述的方法,其特征在于,所述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。
  22. 如权利要求20或21所述的方法,其特征在于,所述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。
  23. 如权利要求20-22中任一项所述的方法,其特征在于,在所述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 述适配器的VDD-0.7V;或者,
    在所述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为所述适配器的工作电压,和/或3.2V<VDD<4.5V。
  24. 如权利要求20-23中任一项所述的方法,其特征在于,所述移动终端收到所述时钟中断信号之后,所述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。
  25. 一种快速充电方法,其特征在于,所述方法应用于适配器,所述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适配器为所述移动终端的电池充电,所述USB接口中的数据线用于所述适配器和所述移动终端进行通信,所述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速度大于所述普通充电模式的充电速度,
    所述方法包括:
    当从所述移动终端接收到用于指示所述移动终端已完成所述适配器的类型的识别的指示信息时,所述适配器开启快充通信流程,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同意使用所述快速充电模式为所述电池充电;
    所述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使用所述快速充电模式为所述电池充电;
    所述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。
  26. 如权利要求25所述的方法,其特征在于,所述方法还包括:
    所述适配器检测所述适配器为所述移动终端提供的充电电流;
    当未从所述移动终端接收到所述指示信息,但检测到所述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,所述适配器确定所述移动终端已经完成所述适配器的类型的识别,开启所述快充通信流程,向所述移动终端发送所述第一指令。
  27. 如权利要求25或26所述的方法,其特征在于,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使用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适配器确定所述USB接口的接触是否良好。
  28. 如权利要求27所述的方法,其特征在于,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。
  29. 如权利要求25-28中任一项所述的方法,其特征在于,所述第一指令为10101000,或0xA8。
  30. 如权利要求25-29中任一项所述的方法,其特征在于,所述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适配器的当前输出电压合适时,所述适配器将所述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适配器的当前输出电压偏高或偏低时,所述适配器根据所述第二指令的回复指令,调整所述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适配器的当前输出电压合适为止。
  31. 如权利要求30所述的方法,其特征在于,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适配器的当前输出电压合适、偏高或偏低的比特。
  32. 如权利要求31所述的方法,其特征在于,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表示所述适配器的当前输出电压合适,XX=10表示所述适配器的当前输出电压偏高,XX=01表示所述适配器的当前输出电压偏低。
  33. 如权利要求25-32中任一项所述的方法,其特征在于,所述第二指令为10100100,或者0xA4。
  34. 如权利要求25-33中任一项所述的方法,其特征在于,所述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。
  35. 如权利要求34所述的方法,其特征在于,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。
  36. 如权利要求35所述的方法,其特征在于,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。
  37. 如权利要求25-36中任一项所述的方法,其特征在于,所述第三指 令为10100110或0xA6。
  38. 如权利要求25-37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,以调整所述适配器的输出电流,包括:
    在所述恒流阶段,所述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;
    所述适配器根据所述电池的当前电压,调整所述适配器的输出电流。
  39. 如权利要求38所述的方法,其特征在于,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。
  40. 如权利要求39所述的方法,其特征在于,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。
  41. 如权利要求25-40中任一项所述的方法,其特征在于,所述第四指令为10100010或0xA2。
  42. 如权利要求25-41中任一项所述的方法,其特征在于,所述方法还包括:
    所述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,所述适配器根据所述适配器的当前输出电压和所述电池的当前电压,确定所述适配器到所述电池的充电回路阻抗;
    所述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。
  43. 如权利要求42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。
  44. 如权利要求43所述的方法,其特征在于,所述第五指令为10110010或0xB2。
  45. 如权利要求25-44中任一项所述的方法,其特征在于,所述方法还包括:
    当所述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、停止充电或重新开启所述快充通信流程。
  46. 如权利要求25-45中任一项所述的方法,其特征在于,所述适配器向所述移动终端发送的指令包括多个比特,所述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,
    所述适配器从所述移动终端接收的指令包括多个比特,所述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。
  47. 如权利要求25-46中任一项所述的方法,其特征在于,所述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适配器提供。
  48. 如权利要求47所述的方法,其特征在于,所述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。
  49. 如权利要求47或48所述的方法,其特征在于,所述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。
  50. 如权利要求47-49中任一项所述的方法,其特征在于,在所述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适配器的VDD-0.7V;或者,
    在所述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为所述适配器的工作电压,和/或3.2V<VDD<4.5V。
  51. 如权利要求47-50中任一项所述的方法,其特征在于,所述移动终端收到所述时钟中断信号之后,所述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。
  52. 一种移动终端,其特征在于,所述移动终端与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的电池充电,所述USB接口中的数据线用于所述移动终端和所述适配器进行通信,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速度大于所述普通充电模式的充电速度,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在检测到所述适配器与所述移动终端连接之后,确定所述适配器的类型;当确定所述适配器的类型为非USB类型时,向所述适配器发送指示信息,所述指示信息用于指示所述移动终端已完成所述适配器的类型的识别,以触发所述适配器开启快充通信流程;在所述适配器开启所述快充通信流程之后,从所述适配器接收第一指令,所述第一指令用于询问所述移动终端是否同意使用所述快速充电模式为所述电池充电;向所述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使用所述快速充电模式为所述电池充电;通过所述适配器发送的第二指令与所述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;通过所述适配器发送的第三指令与所述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,通过所述适配器发送的第四指令与所述适配器进行握手通信,以便所述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电池充电。
  53. 如权利要求52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适配器确定所述USB接口的接触是否良好。
  54. 如权利要求53所述的移动终端,其特征在于,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。
  55. 如权利要求52-54中任一项所述的移动终端,其特征在于,所述第一指令为10101000,或0xA8。
  56. 如权利要求52-55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适配器接收所述第二指令,所述第二指令用于询问所述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适配器的当前输出电压合适、偏高或偏低,以便所述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。
  57. 如权利要求56所述的移动终端,其特征在于,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表示所述适配器的当前输出电压合适,XX=10表示所述适配器的当前输出电压偏高,XX=01表示所述适配器的当前输出电压偏低。
  58. 如权利要求52-57中任一项所述的移动终端,其特征在于,所述第二指令为10100100,或者0xA4。
  59. 如权利要求52-58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。
  60. 如权利要求59所述的移动终端,其特征在于,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。
  61. 如权利要求60所述的移动终端,其特征在于,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。
  62. 如权利要求52-61中任一项所述的移动终端,其特征在于,所述第三指令为10100110或0xA6。
  63. 如权利要求52-62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,从所述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,以便所述适配器根据所述电池的当前电压,调整所述适配器的输出电流。
  64. 如权利要求63所述的移动终端,其特征在于,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。
  65. 如权利要求64所述的移动终端,其特征在于,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。
  66. 如权利要求52-65中任一项所述的移动终端,其特征在于,所述第四指令为10100010或0xA2。
  67. 如权利要求52-66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;当所述适配器确定所述USB接口接触不良时,从所述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 适配器准备退出快速充电模式或重新开启所述快充通信流程。
  68. 如权利要求67所述的移动终端,其特征在于,所述第五指令为10110010或0xB2。
  69. 如权利要求52-68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当所述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,执行以下操作中的至少一种:退出所述快速充电模式、停止充电或重新开启所述快充通信流程。
  70. 如权利要求52-69中任一项所述的移动终端,其特征在于,所述移动终端向所述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。
  71. 如权利要求52-70中任一项所述的移动终端,其特征在于,所述适配器与所述移动终端通信过程中的时钟信号均由所述适配器提供。
  72. 如权利要求71所述的移动终端,其特征在于,所述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。
  73. 如权利要求71或72所述的移动终端,其特征在于,所述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。
  74. 如权利要求71-73中任一项所述的移动终端,其特征在于,在所述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适配器的VDD-0.7V;或者,在所述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为所述适配器的工作电压,和/或3.2V<VDD<4.5V。
  75. 如权利要求71-74中任一项所述的移动终端,其特征在于,所述移动终端收到所述时钟中断信号之后,所述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。
  76. 一种适配器,其特征在于,所述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适配器为所述移动终端的电池充电,所述USB接口中的数据线用于所述适配器和所述移动终端进行通信,所述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速度大于所述普通充电模式的充电速度,所述适配器包括通信控制电路和充电电路,
    所述通信控制电路具体用于当从所述移动终端接收到用于指示所述移动终端已完成所述适配器的类型的识别的指示信息时,开启快充通信流程,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同意使用所述快速充电模式为所述电池充电;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使用所述快速充电模式为所述电池充电;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,以调整所述适配器的输出电流,从而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。
  77. 如权利要求76所述的适配器,其特征在于,所述通信控制电路还用于检测所述适配器为所述移动终端提供的充电电流;当未从所述移动终端接收到所述指示信息,但检测到所述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,确定所述移动终端已经完成 所述适配器的类型的识别,开启所述快充通信流程,向所述移动终端发送所述第一指令。
  78. 如权利要求76或77所述的适配器,其特征在于,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适配器确定所述USB接口的接触是否良好。
  79. 如权利要求78所述的适配器,其特征在于,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。
  80. 如权利要求76-79中任一项所述的适配器,其特征在于,所述第一指令为10101000,或0xA8。
  81. 如权利要求76-80中任一项所述的适配器,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适配器的当前输出电压合适时,将所述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适配器的当前输出电压合适为止。
  82. 如权利要求81所述的适配器,其特征在于,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适配器的当前输出电压合适、偏高或偏低的比特。
  83. 如权利要求82所述的适配器,其特征在于,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表示所述适配器的当前输出电压合适,XX=10表示所述适配器的当前输出电压偏高,XX=01表示所述适配器的当前输出电压偏低。
  84. 如权利要求76-83中任一项所述的适配器,其特征在于,所述第二指令为10100100,或者0xA4。
  85. 如权利要求76-84中任一项所述的适配器,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。
  86. 如权利要求85所述的适配器,其特征在于,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。
  87. 如权利要求86所述的适配器,其特征在于,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。
  88. 如权利要求76-87中任一项所述的适配器,其特征在于,所述第三指令为10100110或0xA6。
  89. 如权利要求76-88中任一项所述的适配器,其特征在于,所述通信控制电路具体用于在所述恒流阶段,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,调整所述适配器的输出电流。
  90. 如权利要求89所述的适配器,其特征在于,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。
  91. 如权利要求90所述的适配器,其特征在于,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。
  92. 如权利要求76-91中任一项所述的适配器,其特征在于,所述第四指令为10100010或0xA2。
  93. 如权利要求76-92中任一项所述的适配器,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,根据所述适配器的当前输出电压和所述电池的当前电压,确定所述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。
  94. 如权利要求93所述的适配器,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。
  95. 如权利要求94所述的适配器,其特征在于,所述第五指令为10110010或0xB2。
  96. 如权利要求76-95中任一项所述的适配器,其特征在于,所述通信控制电路还用于当所述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,执行以下操作中的至少一种:退出所述快速充电模式、停止充电或重新开启所述快充通信流程。
  97. 如权利要求76-96中任一项所述的适配器,其特征在于,所述适配器向所述移动终端发送的指令包括多个比特,所述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,所述适配器从所述移动终端接收的指令包括多个比特,所述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。
  98. 如权利要求76-97中任一项所述的适配器,其特征在于,所述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适配器提供。
  99. 如权利要求98所述的适配器,其特征在于,所述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。
  100. 如权利要求98或99所述的适配器,其特征在于,所述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。
  101. 如权利要求98-100中任一项所述的适配器,其特征在于,在所述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适配器的VDD-0.7V;或者,在所述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为所述适配器的工作电压,和/或3.2V<VDD<4.5V。
  102. 如权利要求98-101中任一项所述的适配器,其特征在于,所述移动终端收到所述时钟中断信号之后,所述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。
PCT/CN2016/070204 2016-01-05 2016-01-05 快速充电方法、移动终端和适配器 WO2017117730A1 (zh)

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