WO2018039881A1 - 充电保护方法、终端及充电器 - Google Patents

充电保护方法、终端及充电器 Download PDF

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Publication number
WO2018039881A1
WO2018039881A1 PCT/CN2016/097206 CN2016097206W WO2018039881A1 WO 2018039881 A1 WO2018039881 A1 WO 2018039881A1 CN 2016097206 W CN2016097206 W CN 2016097206W WO 2018039881 A1 WO2018039881 A1 WO 2018039881A1
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WO
WIPO (PCT)
Prior art keywords
terminal
charger
charging
value
current value
Prior art date
Application number
PCT/CN2016/097206
Other languages
English (en)
French (fr)
Inventor
张奋伟
田海涛
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2016/097206 priority Critical patent/WO2018039881A1/zh
Priority to CN201680088445.7A priority patent/CN109565171B/zh
Priority to US16/328,951 priority patent/US11476684B2/en
Priority to EP16914451.6A priority patent/EP3503332A4/en
Publication of WO2018039881A1 publication Critical patent/WO2018039881A1/zh

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/26—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents
    • H02H3/28—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at two spaced portions of a single system, e.g. at opposite ends of one line, at input and output of apparatus
    • H02H3/30—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at two spaced portions of a single system, e.g. at opposite ends of one line, at input and output of apparatus using pilot wires or other signalling channel
    • H02H3/305—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at two spaced portions of a single system, e.g. at opposite ends of one line, at input and output of apparatus using pilot wires or other signalling channel involving current comparison
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H02J7/007188—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters
    • H02J7/007192—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters in response to temperature
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H1/00—Details of emergency protective circuit arrangements
    • H02H1/0061—Details of emergency protective circuit arrangements concerning transmission of signals
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present application relates to the field of communications, and in particular, to a charging protection method, a terminal, and a charger.
  • the fast charging exchange exchanges a large current or a large voltage for the reduction of the charging time
  • the charging port of the electronic device or the charger is likely to overheat under the condition of abnormal contact, short circuit or water inflow, thereby causing accidents such as burning of electronic equipment or even fire.
  • the present application provides a charging protection method, a terminal and a charger, and aims to solve the problem that the charging port is prone to cause an accident.
  • a first aspect of the present application provides a charging protection method, including the following steps: a terminal acquires a first current value and a second current value, and an output current value of the charger during charging of the charger to the terminal For the first current value, the input current value of the terminal is the second current value. The terminal calculates a difference between the first current value and the second current value, and if the difference is greater than a protection current threshold, the terminal terminates charging of the charger by the terminal The process can effectively avoid accidents caused by overheating of the charging interface.
  • a second aspect of the present application provides a terminal comprising: a communication component and a processor.
  • Communication The component is configured to obtain an output current value of the charger during charging of the charger to the terminal.
  • the processor is configured to calculate a difference between an output current value of the charger and an input current value of the terminal, and terminate the charging of the terminal by the charger if the difference is greater than a protection current threshold the process of.
  • the method before the terminal terminates the charging process of the charger to the terminal, the method further includes: when the difference is greater than an early warning current threshold, the terminal sends a prompt message, where The early warning current threshold is less than the protection current threshold.
  • the setting of the warning threshold is helpful for early warning of charging overheating.
  • the terminal obtains the output current value of the charger in a specific manner: sending a current acquisition request to the charger, and receiving an output current value sent by the charger.
  • a third aspect of the present application provides a charging protection method, comprising the steps of: acquiring, by a terminal, a power loss in a process of charging a charger to the terminal, where the power loss is greater than a protection power threshold The terminal terminates the process of charging the charger to the terminal, thereby effectively avoiding an accident caused by overheating of the charging interface.
  • a fourth aspect of the present application provides still another terminal, comprising: a communication component and a processor.
  • the communication component is configured to obtain an output current value and an output voltage value of the charger during charging of the charger to the terminal.
  • the processor is configured to acquire, according to an output current value and an output voltage value of the charger, a power loss in a process of charging the charger to the terminal, and in a case where the power loss is greater than a protection power threshold, The terminal terminates the process of charging the charger to the terminal.
  • the specific manner of obtaining the power loss in the process of charging the charger to the terminal is: obtaining the work by calculating a difference between the first power value and the second power value. Loss of rate.
  • the first power value is the product of the output current value of the charger and the output voltage value of the charger
  • the second power value is the product of the input current value of the terminal and the input voltage value of the terminal.
  • the method before the terminal terminates the charging process of the charger to the terminal, the method further includes: when the power loss is greater than an early warning power threshold, the terminal sends a prompt message, where The early warning power threshold is less than the protection power threshold.
  • the specific manner of obtaining the output current value and the output voltage value of the charger is: sending a request for acquiring the current value and the voltage value to the charger, and receiving an output current of the charger sent by the charger Value and output voltage value.
  • a fifth aspect of the present application provides a charging protection method, comprising the steps of: acquiring, by a terminal, a first temperature value and a second temperature value, wherein a charging output of the charger is in a process of charging a charger to the terminal
  • the temperature value of the port is the first temperature value
  • the temperature value of the charging input port of the terminal is the second temperature value, where the first temperature value is greater than the first temperature protection threshold, or
  • the terminal terminates the process of charging the charger to the terminal, so that an accident caused by overheating of the charging interface can be effectively avoided.
  • a sixth aspect of the present application provides yet another terminal comprising a communication component and a processor.
  • a communication component configured to acquire a charging and charging of the charger during charging of the charger to the terminal The temperature value of the out port.
  • the processor is configured to terminate the temperature when the temperature value of the charging output port of the charger is greater than the first temperature protection threshold, or the temperature value of the charging input port of the terminal is greater than the second temperature protection threshold The process of charging the charger to the terminal.
  • the terminal further includes: a temperature sensor disposed at a charging input port of the terminal.
  • the processor is further configured to obtain a temperature value of the charging input port of the terminal from the temperature sensor.
  • the method before the terminating the charging of the charger to the terminal, the method further includes: a temperature value of the charging output port of the charger is greater than a first alarm temperature threshold, or When the temperature value of the charging input port of the terminal is greater than the second alarm temperature threshold, the terminal sends a prompt message, where the first alarm temperature threshold is less than the first protection temperature threshold, The second alarm temperature threshold is less than the second protection temperature threshold.
  • the specific manner of the terminal acquiring the temperature value of the charging output port of the charger is: sending a request for acquiring the temperature value to the charger, and receiving the charging output port of the charger sent by the charger. Temperature value.
  • the terminating the charging of the charger to the terminal includes: notifying the charger to terminate charging the terminal; and/or the terminal terminating the charging process.
  • a seventh aspect of the present application provides a charger comprising: a power output circuit, a controller, and an analog-to-digital converter.
  • the power output circuit is for outputting power.
  • the controller is configured to receive a request to acquire a parameter, the parameter including at least one of an output current value of the power output circuit and an output voltage value.
  • the analog to digital converter is configured to measure the output current value and/or the output voltage value.
  • the controller is further configured to send the parameter.
  • the charger uses a mode The quasi-digital converter measures the output current value and/or the output voltage value, so that the terminal can acquire the output current value of the charger and/or the output voltage value, which is beneficial to the terminal according to the output current value of the charger and/or The output voltage value is charged and protected.
  • FIG. 1 is a schematic diagram of a terminal connected to a charger through a charging line
  • FIG. 2 is a simplified circuit diagram of a charger charging a terminal
  • FIG. 3 is a flowchart of a charging protection method according to an embodiment of the present invention.
  • FIG. 4 is a simplified circuit diagram of a charger for charging a terminal
  • FIG. 5 is a flowchart of still another charging protection method according to an embodiment of the present invention.
  • FIG. 6 is a flowchart of still another charging protection method according to an embodiment of the present invention.
  • FIG. 7 is a flowchart of still another charging protection method according to an embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of a charger according to an embodiment of the present invention.
  • FIG. 9 is a schematic structural diagram of a terminal according to an embodiment of the present disclosure.
  • FIG. 10 is a schematic structural diagram of still another terminal according to an embodiment of the present invention.
  • the terminal for example, a mobile phone, is connected to the charger through a charging line.
  • the terminal is connected to the charging line through a USB port, and the charger may also be connected to the charging line through the USB port.
  • the charging protocol is recognized between the charger and the terminal, and the charger outputs a specific voltage or current according to the instruction of the terminal to charge the terminal.
  • the terminal and the charger disclosed in the embodiments of the present application aim to reduce the possibility that the charging port may cause an accident of the terminal or the charger due to abnormal contact, short circuit or water intrusion.
  • the charger described in the technical solution described in the embodiments of the present application may be a smart charger (for example, a charger having a single chip microcomputer to implement control and processing functions), or a charger having a constant output current, or, the present application
  • the technical solution described in the embodiments is applied in a constant current charging phase.
  • FIG. 2 is a simplified circuit diagram of the charger of FIG. 1 for charging the terminal of FIG. 1, wherein the output voltage value of the charger is Ua, the output current value is Ia, the input voltage value of the terminal is Ub, and the input current value is For Ib.
  • the output voltage value of the charger is Ua
  • the output current value is Ia
  • the input voltage value of the terminal is Ub
  • the input current value is For Ib.
  • Ic short-circuit resistance between the output port of the charger and the input port of the terminal (shown by the dotted line in Figure 2)
  • Ic is zero, and the detection error is not considered.
  • FIG. 3 is a flow chart of charging protection of the terminal and the charger shown in FIG. 1 according to the circuit shown in FIG. 2, including the following steps:
  • S301 The terminal sends a current value acquisition request to the charger to obtain an output current value Ia of the charger.
  • the transmission of information can be transmitted through the data line between the terminal and the charger, or through the communication module in the terminal and the charger, for example, through the Bluetooth module.
  • S303 The charger sends an output current value Ia to the terminal.
  • S305 The terminal calculates the value of Ia-Ib.
  • S306 The terminal determines whether the value of Ia-Ib is greater than the alarm current value threshold. If yes, execute S307. If no, do not process or periodically execute S301-S306.
  • S307 The terminal sends a prompt message, where the prompt information is used to remind the charging port that an abnormality may occur.
  • any one or more forms of prompts such as a display prompt and an audible prompt may be issued.
  • S308 The terminal determines whether the value of Ia-Ib is greater than a protection current threshold. If yes, execute S309. If not, do not process or periodically execute S308.
  • the alarm current threshold is less than the protection threshold.
  • the purpose of setting the alarm current threshold is to pre-judg the accidents that may occur to avoid accidents.
  • S306 and S307 are optional steps, and S308 can be directly executed by skipping S306 and S307.
  • S310 The terminal notifies the charger to stop the charging process.
  • S311 The charger stops charging, that is, stops outputting voltage and current to the outside.
  • the terminal can stop charging and cut off the charging process of the charger when the value of Ia-Ib is greater than the protection threshold. Therefore, it is possible to effectively prevent the charging port from being burnt or even ignited. accident.
  • S501 The terminal sends a voltage value and a current value acquisition request to the charger to obtain an output voltage value Ua and an output current value Ia of the charger.
  • S502 The charger measures the output voltage value Ua and the output current value Ia.
  • S503 The charger sends the output voltage value Ua and the output current value Ia to the terminal.
  • S504 The terminal measures the input voltage value Ub and the input current value Ib.
  • S506 The terminal determines whether the Pc is greater than the alarm power threshold. If yes, execute S507. If no, do not process or periodically execute S501-S506.
  • S507 The terminal sends a prompt message.
  • S508 The terminal determines whether the Pc is greater than the protection power threshold. If yes, execute S509. If not, do not process or periodically execute S508.
  • S510 The terminal notifies the charger to stop the charging process.
  • S511 The charger stops charging, that is, stops outputting voltage and current to the outside.
  • the present embodiment uses the power loss of the charger to the terminal to prevent an accident from occurring during the charging process.
  • Rc is the sum of the impedance Rc1 of the charging cable and the main board trace impedance Rc2 of the terminal.
  • the sum of the power losses of each impedance is the power loss Pc between the charger and the terminal.
  • the motherboard trace impedance of the terminal is (Ub-battery voltage value U battery ) / battery current value I battery
  • FIG. 6 discloses another charging protection method, which includes the following steps:
  • S601 The terminal sends a voltage value and a current value acquisition request to the charger to obtain an output voltage value Ua and an output current value Ia of the charger.
  • S602 The charger measures the output voltage value Ua and the output current value Ia.
  • S603 The charger sends the output voltage value Ua and the output current value Ia to the terminal.
  • the terminal measures the input voltage value Ub, the voltage value U battery at both ends of the battery, and the current value I battery of the battery .
  • S606 to S611 are the same as S506 to S511, and are not described here.
  • FIG. 7 is still another charging protection method disclosed in the embodiment of the present application, including the following steps:
  • S701 The terminal sends a request for acquiring a temperature value to the charger.
  • the charger obtains a temperature value Ta of the charging output port by using a temperature value sensor disposed at the charging output port.
  • S703 The charger sends Ta to the terminal.
  • S704 The terminal acquires a temperature value Tb of the charging input port by using a temperature sensor disposed at the charging input port.
  • S705 The terminal determines whether the Ta is greater than the first alarm temperature threshold, or whether the Tb is greater than the second alarm temperature threshold. If the above item is yes, execute S706. If the above two items are not met, no processing or period is performed. S101 to S705 are executed.
  • S706 The terminal sends a prompt message.
  • S707 The terminal determines whether the Ta is greater than the first protection temperature threshold, or whether the Tb is greater than the second protection temperature threshold. If the above item is YES, execute S708. If the above two items are not met, no processing or period is performed. S707 is executed.
  • S709 The terminal notifies the charger to stop the charging process.
  • the use of temperature values as a basis for charging protection is beneficial to avoid accidents during charging. It should be noted that the charging protection method shown in FIG. 7 can be applied to a conventional charger and a terminal, and is not limited to a smart charger or a constant current charger, and is not limited to a constant current scene.
  • FIG. 3, FIG. 5 (or FIG. 6) and FIG. 7 can be any group. Used together.
  • the flow shown in FIG. 3 and the flow shown in FIG. 7 are superimposed for charging protection.
  • FIG. 8 is a diagram showing the structure of the charger shown in FIG. 1, including: a power output circuit, a controller, and an analog-to-digital converter.
  • a temperature sensor disposed at an output port may also be included.
  • the power output circuit is used for outputting power to charge the terminal.
  • the controller is configured to receive a request for acquiring parameters (eg, at least one of an output current value, an output voltage value, and a temperature value) sent by the terminal.
  • the analog-to-digital converter is used to measure the output current value and/or the output voltage value of the charger, that is, perform at least one of S302, S502, and S602.
  • the temperature sensor is used to sense the temperature value, that is, S702 is performed.
  • the controller is further configured to transmit parameters (eg, at least one of an output current value, an output voltage value, and a temperature value), that is, perform at least one of S303, S503, S603, and S703.
  • the controller can receive and send the request or parameter through the output port and the charging line (or through the wireless communication module).
  • FIG. 9 is a diagram showing the structure of the terminal shown in FIG. 1, including: a transmitter, a receiver, and a processor.
  • a temperature sensor disposed at the charging input port may also be included.
  • the transmitter and the receiver constitute a communication component.
  • the transmitter is configured to send a request for acquiring parameters (eg, at least one of an output current value, an output voltage value, and a temperature value) to the charger, that is, perform at least one of S301, S501, S601, and S701.
  • the receiver is configured to receive parameters (eg, at least one of an output current value, an output voltage value, and a temperature value) transmitted by the charger.
  • a temperature sensor is used to sense the temperature value.
  • the processor is configured to perform at least one of 1, 2, 3, and 4. Where 1 means S304 to S310, 2 indicates S504 to S510, 3 indicates S604 to S610, and 4 indicates S704 to S709.
  • FIG. 10 is a more specific structure of the terminal shown in FIG. 9.
  • the mobile phone 100 includes an RF (Radio Frequency) circuit 110 (ie, a specific implementation form of a transmitter and a receiver). , memory 120, other input devices 130, display 140, sensor 150, audio circuit 160, I/O subsystem 170, processor 180, and power supply 190, and the like.
  • RF Radio Frequency
  • FIG. 10 does not constitute a limitation to the mobile phone, and may include more or less components than those illustrated, or combine some components, or split some components, or Different parts are arranged.
  • display 140 is a User Interface (UI) and that handset 100 may include a user interface that is smaller than shown or less.
  • UI User Interface
  • the RF circuit 110 can be used to send and receive information, in combination with an embodiment of the present application, that is, a request for transmitting a parameter (eg, at least one of an output current, an output voltage value, and a temperature value) to the charger, that is, executing At least one of S301, S501, S601, and S701, and for receiving a parameter transmitted by the charger (eg, at least one of an output current, an output voltage value, and a temperature value).
  • a parameter eg, at least one of an output current, an output voltage value, and a temperature value
  • the RF circuit 110 can also be used for receiving and transmitting signals during a call.
  • RF circuits include, but are not limited to, an antenna, at least one amplifier, a transceiver, a coupler, an LNA (Low Noise Amplifier), a duplexer, and the like.
  • RF circuitry 110 can also communicate with the network and other devices via wireless communication.
  • the wireless communication may use any communication standard or protocol, including but not limited to GSM (Global System of Mobile communication), GPRS (General Packet Radio Service), CDMA (Code Division Multiple Access). , code division multiple access), WCDMA (Wideband Code Division Multiple Access), LTE (Long Term Evolution), e-mail, SMS (Short Messaging Service), and the like.
  • the memory 120 can be used to store software programs and modules, and the processor 180 executes various functional applications and data processing of the mobile phone 100 by running software programs and modules stored in the memory 120.
  • the memory 120 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application required for at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may be stored according to The data created by the use of the mobile phone 100 (such as audio data, phone book, etc.) and the like.
  • memory 120 can include high speed random access memory, and can also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.
  • the processor 180 is the control center of the handset 100, connecting various portions of the entire handset with various interfaces and lines, by running or executing software programs and/or modules stored in the memory 120, and recalling data stored in the memory 120, The various functions and processing data of the mobile phone 100 are executed to perform overall monitoring of the mobile phone.
  • processor 180 may include one or more processing units.
  • the processor 180 can integrate an application processor and a modem processor, wherein the application processor mainly processes an operating system, a user interface, an application, etc., and the modem processor mainly processes wireless communication. It can be understood that the above modem processor may not be integrated into the processor 180.
  • a processor is operative to perform at least one of 1, 2, 3, and 4.
  • 1 indicates S304 to S310
  • 2 indicates S504 to S510
  • 3 indicates S604 to S610
  • 4 indicates S704 to S709.
  • the handset 100 also includes a power source 190 (such as a battery) that supplies power to the various components.
  • a power source 190 such as a battery
  • the power source can be logically coupled to the processor 180 via a power management system to pass the power management system. It manages functions such as charging, discharging, and power consumption.
  • the power supply 190 includes a temperature sensor disposed at the charging input port.
  • Other input devices 130 can be used to receive input numeric or character information, as well as generate key signal inputs related to user settings and function controls of the handset 100.
  • other input devices 130 may include, but are not limited to, a physical keyboard, function keys (such as volume control buttons, switch buttons, etc.), trackballs, mice, joysticks, and light mice (the light mouse is not sensitive to display visual output).
  • function keys such as volume control buttons, switch buttons, etc.
  • trackballs mice, joysticks, and light mice (the light mouse is not sensitive to display visual output).
  • Other input devices 130 are coupled to other input device controllers 171 of I/O subsystem 170 for signal interaction with processor 180 under the control of other device input controllers 171.
  • the display screen 140 can be used to display information input by the user or information provided to the user as well as various menus of the mobile phone 100, and can also accept user input.
  • the specific display screen 140 may include a display panel 141 and a touch panel 142.
  • the display panel 141 can be configured by using an LCD (Liquid Crystal Display), an OLED (Organic Light-Emitting Diode), or the like.
  • the touch panel 142 also referred to as a touch screen, a touch sensitive screen, etc., can collect contact or non-contact operations on or near the user (eg, the user uses any suitable object or accessory such as a finger, a stylus, etc. on the touch panel 142.
  • the operation in the vicinity of the touch panel 142 may also include a somatosensory operation; the operation includes a single-point control operation, a multi-point control operation, and the like, and drives the corresponding connection device according to a preset program.
  • the touch panel 142 may include two parts: a touch detection device and a touch controller. Wherein, the touch detection device detects the touch orientation and posture of the user, and detects a signal brought by the touch operation, and transmits a signal to the touch controller; the touch controller receives the touch information from the touch detection device, and converts the signal into a processor. The processed information is sent to the processor 180 and can receive the processor 180 issued orders and executed.
  • the touch panel 142 can be implemented by using various types such as resistive, capacitive, infrared, and surface acoustic waves, and the touch panel 142 can be implemented by any technology developed in the future.
  • the touch panel 142 can cover the display panel 141, and the user can display the content according to the display panel 141 (the display content includes, but is not limited to, a soft keyboard, a virtual mouse, a virtual button, an icon, etc.) on the display panel 141. Operation is performed on or near the covered touch panel 142.
  • the touch panel 142 After detecting the operation thereon or nearby, the touch panel 142 transmits to the processor 180 through the I/O subsystem 170 to determine user input, and then the processor 180 according to the user The input provides a corresponding visual output on display panel 141 via I/O subsystem 170.
  • the touch panel 142 and the display panel 141 are two independent components to implement the input and input functions of the mobile phone 100, in some embodiments, the touch panel 142 may be integrated with the display panel 141. The input and output functions of the mobile phone 100 are implemented.
  • the handset 100 can also include at least one type of sensor 150, such as a light sensor, motion sensor, and other sensors.
  • the light sensor may include an ambient light sensor and a proximity sensor, wherein the ambient light sensor may adjust the brightness of the display panel 141 according to the brightness of the ambient light, and the proximity sensor may close the display panel 141 when the mobile phone 100 moves to the ear. / or backlight.
  • the accelerometer sensor can detect the magnitude of acceleration in all directions (usually three axes). When it is stationary, it can detect the magnitude and direction of gravity. It can be used to identify the gesture of the mobile phone (such as horizontal and vertical screen switching, related Game, magnetometer attitude calibration), vibration recognition related functions (such as pedometer, tapping), etc.
  • the mobile phone 100 can also be configured with gyroscopes, barometers, hygrometers, thermometers, infrared sensors and other sensors, here Let me repeat.
  • the audio circuit 160, the speaker 161, and the microphone 162 can provide an audio interface between the user and the handset 100.
  • the audio circuit 160 can transmit the converted signal of the received audio data to the Yang
  • the sounder 161 is converted into a sound signal output by the speaker 161; on the other hand, the microphone 162 converts the collected sound signal into a signal, which is received by the audio circuit 160, converted into audio data, and then output to the RF circuit 108 for transmission.
  • another mobile phone, or audio data is output to the memory 120 for further processing.
  • the I/O subsystem 170 is used to control external devices for input and output, and may include other device input controllers 171, sensor controllers 172, and display controllers 173.
  • one or more other input control device controllers 171 receive signals from other input devices 130 and/or send signals to other input devices 130.
  • Other input devices 130 may include physical buttons (press buttons, rocker buttons, etc.) , dial, slide switch, joystick, click wheel, light mouse (light mouse is a touch-sensitive surface that does not display visual output, or an extension of a touch-sensitive surface formed by a touch screen). It is worth noting that other input control device controllers 171 can be connected to any one or more of the above devices.
  • Display controller 173 in I/O subsystem 170 receives signals from display 140 and/or transmits signals to display 140. After the display 140 detects the user input, the display controller 173 converts the detected user input into an interaction with the user interface object displayed on the display screen 140, ie, implements human-computer interaction. Sensor controller 172 can receive signals from one or more sensors 150 and/or send signals to one or more sensors 150.
  • the mobile phone 100 may further include a camera, a Bluetooth module, and the like, and details are not described herein.

Abstract

一种充电保护方法及终端、充电器，终端从充电器获取参数，包括充电器的输入电压值、输出电流值及充电器的充电输出端口的温度值的至少一项，终端依据充电器的输出电流值与终端的输入电流值的差值、充电器到终端的功率损失以及温度值（包括充电器的充电输出端口的温度值和终端的充电输入端口的温度值）的至少一项与其对应的门限值的关系，在参数值大于门限值的情况下，终止充电过程，从而避免充电端口的过热，能够有效降低因充电端口的过热导致事故的几率。

Description

充电保护方法、终端及充电器 技术领域
本申请涉及通信领域，尤其涉及一种充电保护方法、终端及充电器。
背景技术
随着电子设备的应用日益广泛，为电子设备快速充电成为研究的焦点。
因为快速充电以大电流或者大电压换取充电时间的减少，所以，电子设备或充电器的充电端口在接触异常、短路或者进水等情况下，很容易过热而引发烧毁电子设备甚至起火等事故。
发明内容
本申请提供了一种充电保护方法、终端及充电器，目的在于解决充电端口容易引发事故的问题。
为了实现上述目的，本申请提供了以下技术方案：
本申请的第一方面提供了一种充电保护方法，包括以下步骤：终端获取第一电流值和第二电流值，在充电器向所述终端充电的过程中，所述充电器的输出电流值为所述第一电流值，所述终端的输入电流值为所述第二电流值。所述终端计算所述第一电流值与所述第二电流值的差值，在所述差值大于保护电流门限值的情况下，所述终端终止所述充电器向所述终端充电的过程，从而能够有效避免充电接口过热引发的事故。
本申请的第二方面提供了一种终端，包括：通信组件和处理器。通信 组件用于获取在充电器向所述终端充电的过程中，所述充电器的输出电流值。处理器用于计算所述充电器的输出电流值与所述终端的输入电流值的差值，并在所述差值大于保护电流门限值的情况下，终止所述充电器向所述终端充电的过程。
在一个实现方式中，在所述终端终止所述充电器向所述终端充电的过程之前，还包括：在所述差值大于预警电流门限值的情况下，所述终端发出提示信息，所述预警电流门限值小于所述保护电流门限值。预警门限值的设定，有利于对于充电过热进行预警。
在一个实现方式中，终端获取充电器的输出电流值的具体方式为：向所述充电器发送电流获取请求，并接收充电器发送的输出电流值。
本申请的第三方面提供了又一种充电保护方法，包括以下步骤：终端获取在充电器向所述终端充电的过程中的功率损失，在所述功率损失大于保护功率门限值的情况下，所述终端终止所述充电器向所述终端充电的过程，从而能够有效避免充电接口过热引发的事故。
本申请的第四方面提供了又一种终端，包括：通信组件和处理器。通信组件用于获取在所述充电器向所述终端充电的过程中，所述充电器的输出电流值和输出电压值。处理器用于依据所述充电器的输出电流值和输出电压值，获取在充电器向所述终端充电的过程中的功率损失，并在所述功率损失大于保护功率门限值的情况下，所述终端终止所述充电器向所述终端充电的过程。
在一个实现方式中，获取在充电器向所述终端充电的过程中的功率损失的具体方式为：通过计算第一功率值和第二功率值的差值，得到所述功 率损失。其中第一功率值为充电器的输出电流值与充电器的输出电压值的乘积，第二功率值为终端的输入电流值与终端的输入电压值的乘积。
在一个实现方式中，获取在充电器向所述终端充电的过程中的功率损失的另一种具体方式为：通过计算Pc＝(Ua-Ub)*Ia+(Ub-U电池)*I电池，得到所述功率损失Pc，其中，Ua为充电器的输出电压值，Ub为终端的输入电压值，Ia为充电器的输出电流值，U电池为所述终端的电池两端的电压值，I电池为所述终端的电池的电流值。
在一个实现方式中，在所述终端终止所述充电器向所述终端充电的过程之前，还包括：在所述功率损失大于预警功率门限值的情况下，所述终端发出提示信息，所述预警功率门限值小于所述保护功率门限值。
在一个实现方式中，获取充电器的输出电流值和输出电压值的具体方式为：向所述充电器发送获取电流值和电压值的请求，并接收所述充电器发送的充电器的输出电流值和输出电压值。
本申请的第五方面提供了又一种充电保护方法，包括以下步骤：终端获取第一温度值和第二温度值，在充电器向所述终端充电的过程中，所述充电器的充电输出端口的温度值为所述第一温度值，所述终端的充电输入端口的温度值为所述第二温度值，在所述第一温度值大于第一温度保护门限值，或者，所述第二温度值大于第二温度保护门限值的情况下，所述终端终止所述充电器向所述终端充电的过程，从而能够有效避免充电接口过热引发的事故。
本申请的第六方面提供了又一种终端，包括通信组件和处理器。通信组件，用于获取在充电器向所述终端充电的过程中，所述充电器的充电输 出端口的温度值。处理器用于在所述充电器的充电输出端口的温度值大于第一温度保护门限值，或者，所述终端的充电输入端口的温度值大于第二温度保护门限值的情况下，终止所述充电器向所述终端充电的过程。
在一个实现方式中，所述终端还包括：设置在所述终端的充电输入端口的温度传感器。处理器还用于从温度传感器获取终端的充电输入端口的温度值。
在一个实现方式中，在所述终止所述充电器向所述终端充电的过程之前，还包括：在所述充电器的充电输出端口的温度值大于第一告警温度门限值，或者所述终端的充电输入端口的温度值大于第二告警温度门限值的情况下，所述终端发出提示信息，所述第一告警温度门限值小于所述第一保护温度门限值，所述第二告警温度门限值小于所述第二保护温度门限值。
在一个实现方式中，终端获取充电器的充电输出端口的温度值的具体方式为：向所述充电器发送获取温度值的请求，接收所述充电器发送的所述充电器的充电输出端口的温度值。
在一个实现方式中，所述终止所述充电器向所述终端充电的过程包括：通知所述充电器终止向所述终端充电；和/或，所述终端终止所述充电的过程。
本申请的第七方面提供了一种充电器，包括：功率输出电路、控制器和模拟-数字转换器。所述功率输出电路用于输出功率。所述控制器用于接收获取参数的请求，所述参数包括所述功率输出电路的输出电流值以及输出电压值的至少一项。所述模拟-数字转换器用于测量所述输出电流值和/或所述输出电压值。所述控制器还用于发送所述参数。所述充电器使用模 拟-数字转换器测量输出电流值和/或所述输出电压值，使得终端能够获取充电器的输出电流值和/或所述输出电压值，有利于终端依据充电器的输出电流值和/或所述输出电压值进行充电保护。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中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为终端通过充电线连接充电器的示意图；
图2为充电器为终端充电的简化电路示意图；
图3为本发明实施例公开的一种充电保护方法的流程图；
图4为充电器为终端充电的又一种简化电路示意图；
图5为本发明实施例公开的又一种充电保护方法的流程图；
图6为本发明实施例公开的又一种充电保护方法的流程图；
图7为本发明实施例公开的又一种充电保护方法的流程图；
图8为本发明实施例公开的一种充电器的结构示意图；
图9为本发明实施例公开的一种终端的结构示意图；
图10为本发明实施例公开的又一种终端的结构示意图。
具体实施方式
如图1所示，终端例如手机通过充电线连接充电器，具体的，终端通过USB端口连接充电线，充电器也可能通过USB端口连接充电线。开始充电后，充电器和终端之间进行充电协议的识别，充电器依据终端的指令进行特定电压或电流的输出，以对终端进行充电。
本申请实施例公开的终端及充电器，目的在于降低充电端口因接触异常、短路或者进水等原因而引发终端或者充电器发生事故的可能性。
本申请实施例所述的技术方案中所述的充电器，可以为智能充电器(例如具有单片机以实现控制和处理功能的充电器)，也可以为输出电流恒定的充电器，或者，本申请实施例所述的技术方案应用在恒流充电阶段。
图2为图1中的充电器为图1中的终端进行充电的简化电路示意图，其中，充电器的输出电压值为Ua，输出电流值为Ia，终端的输入电压值为Ub，输入电流值为Ib。假设充电器的输出端口到终端的输入端口之间存在短路电阻(图2中虚线所示)，产生的短路电流值为Ic，在正常情况下，Ic为零，则在不考虑检测误差的情况下，根据戴维南电流定律：Ia＝Ib+Ic，因此，如果Ia＝Ib，则说明电路正常，否则，说明电路不正常。
依据上述原理，可以通过Ia和Ib之间的差值检测充电电路是否正常。
图3为图1所示的终端和充电器依据图2所示的电路进行充电保护的流程，包括以下步骤：
S301：终端向充电器发送电流值获取请求，以获取充电器的输出电流值Ia。
S302：充电器测量输出电流值Ia。
需要说明的是，在本实施例以及以下实施例中，终端与充电器之间的 信息的传输，可以通过终端与充电器之间的数据线传输，也可以通过终端和充电器中的通信模块传输，例如，通过蓝牙模块传输。
S303：充电器向终端发送输出电流值Ia。
S304：终端测量输入电流值Ib。
S305：终端计算Ia-Ib的值。
S306：终端判断Ia-Ib的值是否大于告警电流值门限值，如果是，执行S307，如果否，不做处理或者周期性执行S301～S306。
S307：终端发出提示信息，提示信息用于提醒充电端口可能发生异常。
具体的，可以发出显示提示、声音提示等任意一种或多种形式的提示。
S308：终端判断Ia-Ib的值是否大于保护电流门限值，如果是，执行S309，如果否，不做处理或者周期性执行S308。
需要说明的是，告警电流门限值小于保护门限值，设置告警电流门限值的作用在于，对可能发生的事故进行预判，以做大限度避免事故的发生。S306和S307为可选步骤，可以跳过S306和S307直接执行S308。
S309：终端停止充电过程。
S310：终端通知充电器停止充电过程。
S311：充电器停止充电过程，即停止向外输出电压和电流。
从图3所示的流程可以看出，终端在Ia-Ib的值大于保护门限值的情况下，能够停止充电并切断充电器的充电过程，因此，能够有效避免充电端口发生烧毁甚至起火等事故。
除了图3所示的方法之外，还可以依据图4所示的方法进行事故的判 定，图4中，充电器的输出功率为Pa＝Ua*Ia，其中，Ua为充电器的输出电压值，Ia为充电器的输出电流值。终端的输入功率为Pb＝Ub*Ib，其中，Ub为终端的输入电压值，Ib为终端的输入电流值。假设充电器的功率经过充电线缆到终端的端口的过程中的功率损失为Pc，则根据能量守恒定律：
Pc＝Pa-Pb
正常情况下，Pc在一定范围内，如果Pc过大，则说明存在过多的功率损耗。
依据上述原理，本申请实施例公开了又一种充电保护方法，如图5所示，包括以下步骤：
S501：终端向充电器发送电压值和电流值获取请求，以获取充电器的输出电压值Ua和输出电流值Ia。
S502：充电器测量输出电压值Ua和输出电流值Ia。
S503：充电器向终端发送输出电压值Ua和输出电流值Ia。
S504：终端测量输入电压值Ub和输入电流值Ib。
S505：终端计算Pc＝Ua*Ia-Ub*Ib。
S506：终端判断Pc是否大于告警功率门限值，如果是，执行S507，如果否，不做处理或者周期性执行S501～S506。
S507：终端发出提示信息。
S508：终端判断Pc是否大于保护功率门限值，如果是，执行S509，如果否，不做处理或者周期性执行S508。
S509：终端停止充电过程。
S510：终端通知充电器停止充电过程。
S511：充电器停止充电过程，即停止向外输出电压和电流。
可见，与图3所示的过程不同，本实施例使用充电器到终端的损耗功率防止充电过程中发生事故。
需要说明的是，如图4所示中虚线所示，在充电器和终端之间存在阻抗Rc，Rc为充电电缆的阻抗Rc1和终端的主板走线阻抗Rc2之和。每段阻抗的功率损失之和即为充电器和终端之间的功率损失Pc。具体地，充电电缆的阻抗为(充电器的输出电压值Ua-终端的输入电压值Ub)/充电器的输出电流值Ia，此阻抗导致的功率损失为Pc1＝I2R＝Ia2*(Ua-Ub)/Ia＝(Ua-Ub)*Ia，终端的主板走线阻抗为(Ub-电池的电压值U电池)/电池的电流值I电池，此阻抗导致的功率损失为Pc2＝I2R＝I电池 2*(Ub-U电池)/I电池＝(Ub-U电池)*I电池，由此可以得到Pc＝Pc1+Pc2＝(Ua-Ub)*Ia+(Ub-U电池)*I电池。依据此原理，图6公开了又一种充电保护方法，包括以下步骤：
S601：终端向充电器发送电压值和电流值获取请求，以获取充电器的输出电压值Ua和输出电流值Ia。
S602：充电器测量输出电压值Ua和输出电流值Ia。
S603：充电器向终端发送输出电压值Ua和输出电流值Ia。
S604：终端测量输入电压值Ub、电池两端的电压值U电池和电池的电流值I电池。
S605：终端计算Pc＝(Ua-Ub)*Ia+(Ub-U电池)*I电池。
S606～S611与S506～S511相同，这里不再赘述。
图7为本申请实施例公开的又一种充电保护方法，包括以下步骤：
S701：终端向充电器发送获取温度值的请求。
S702：充电器通过设置在充电输出端口的温度值传感器，获取充电输出端口的温度值Ta。
S703：充电器将Ta发给终端。
S704：终端通过设置在充电输入端口的温度传感器，获取充电输入端口的温度值Tb。
S705：终端判断Ta是否大于第一告警温度门限值，或者Tb是否大于第二告警温度门限值，如果以上一项为是，执行S706，如果以上两项均不满足，不做处理或者周期性执行S701～S705。
S706：终端发出提示信息。
S707：终端判断Ta是否大于第一保护温度门限值，或者Tb是否大于第二保护温度门限值，如果以上一项为是，执行S708，如果以上两项均不满足，不做处理或者周期性执行S707。
S708：终端停止充电过程。
S709：终端通知充电器停止充电过程。
S710：充电器停止充电过程。
图7中，使用温度值作为充电保护的依据，有利于避免充电过程中发生事故。需要说明的是，图7所示的充电保护方法可以应用在现有的充电器和终端上，而并不限定于智能充电器或者恒流充电器，也并不限定于恒流的场景。
需要说明的是，图3、图5(或图6)以及图7所示的流程可以任意组 合使用。例如，图3所示的流程和图7所示的流程叠加使用，进行充电保护。
图8为图1所示的充电器的结构，包括：功率输出电路、控制器和模拟-数字转换器。可选的，还可以包括设置在输出端口(未画出)的温度传感器。
其中，功率输出电路用于输出功率，以对终端进行充电。控制器用于接收终端发送的获取参数(例如输出电流值、输出电压值以及温度值的至少一项)的请求。对应地，模拟-数字转换器用于测量充电器的输出电流值和/或输出电压值，即执行S302、S502及S602的至少一项。温度传感器用于感应温度值，即执行S702。对应地，控制器还用于发送参数(例如输出电流值、输出电压值以及温度值的至少一项)，即执行S303、S503、S603和S703的至少一项。具体的，控制器可以通过输出端口及充电线(或者通过无线通信模块)，接收并发送请求或参数。
图9为图1所示的终端的结构，包括：发送器、接收器和处理器。可选的，还可以包括设置在充电输入端口的温度传感器。其中，发送器和接收器构成通信组件。
其中，发送器用于向充电器发送获取参数(例如输出电流值、输出电压值以及温度值的至少一项)的请求，即执行S301、S501、S601和S701的至少一项。对应地，接收器用于接收充电器发送的参数(例如输出电流值、输出电压值以及温度值的至少一项)。温度传感器用于感应温度值。对应地，处理器用于执行1、2、3和4的至少一项。其中，1表示S304～S310、 2表示S504～S510、3表示S604～S610、4表示S704～S709。
以终端为手机为例，图10为图9所示的终端的更为具体的结构，其中，手机100包括：RF(Radio Frequency，射频)电路110(即发送器和接收器的具体实现形式)、存储器120、其他输入设备130、显示屏140、传感器150、音频电路160、I/O子系统170、处理器180、以及电源190等部件。本领域技术人员可以理解，图10中示出的手机结构并不构成对手机的限定，可以包括比图示更多或更少的部件，或者组合某些部件，或者拆分某些部件，或者不同的部件布置。本领领域技术人员可以理解显示屏140属于用户界面(UI，User Interface)，且手机100可以包括比图示或者更少的用户界面。
其中，具体的，RF电路110可用于收发信息，结合本申请的实施例，即用于向充电器发送获取参数(例如输出电流、输出电压值以及温度值的至少一项)的请求，即执行S301、S501、S601和S701的至少一项，以及用于接收充电器发送的参数(例如输出电流、输出电压值以及温度值的至少一项)。或者，RF电路110还可以用于通话过程中，信号的接收和发送。通常，RF电路包括但不限于天线、至少一个放大器、收发信机、耦合器、LNA(Low Noise Amplifier，低噪声放大器)、双工器等。此外，RF电路110还可以通过无线通信与网络和其他设备通信。所述无线通信可以使用任一通信标准或协议，包括但不限于GSM(Global System of Mobile communication，全球移动通讯系统)、GPRS(General Packet Radio Service，通用分组无线服务)、CDMA(Code Division Multiple Access，码分多址)、WCDMA(Wideband Code Division Multiple Access,宽带码分多址)、 LTE(Long Term Evolution,长期演进)、电子邮件、SMS(Short Messaging Service，短消息服务)等。
存储器120可用于存储软件程序以及模块，处理器180通过运行存储在存储器120的软件程序以及模块，从而执行手机100的各种功能应用以及数据处理。存储器120可主要包括存储程序区和存储数据区，其中，存储程序区可存储操作系统、至少一个功能所需的应用程序(比如声音播放功能、图像播放功能等)等；存储数据区可存储根据手机100的使用所创建的数据(比如音频数据、电话本等)等。此外，存储器120可以包括高速随机存取存储器，还可以包括非易失性存储器，例如至少一个磁盘存储器件、闪存器件、或其他易失性固态存储器件。
处理器180是手机100的控制中心，利用各种接口和线路连接整个手机的各个部分，通过运行或执行存储在存储器120内的软件程序和/或模块，以及调用存储在存储器120内的数据，执行手机100的各种功能和处理数据，从而对手机进行整体监控。可选的，处理器180可包括一个或多个处理单元。优选的，处理器180可集成应用处理器和调制解调处理器，其中，应用处理器主要处理操作系统、用户界面和应用程序等，调制解调处理器主要处理无线通信。可以理解的是，上述调制解调处理器也可以不集成到处理器180中。结合本申请的实施例，处理器用于执行1、2、3和4的至少一项。其中，1表示S304～S310、2表示S504～S510、3表示S604～S610、4表示S704～S709。
手机100还包括给各个部件供电的电源190(比如电池)，优选的，电源可以通过电源管理系统与处理器180逻辑相连，从而通过电源管理系 统实现管理充电、放电、以及功耗等功能。可选的，电源190的包括设置在充电输入端口的温度传感器。
其它输入设备130可用于接收输入的数字或字符信息，以及产生与手机100的用户设置以及功能控制有关的键信号输入。具体地，其他输入设备130可包括但不限于物理键盘、功能键(比如音量控制按键、开关按键等)、轨迹球、鼠标、操作杆、光鼠(光鼠是不显示可视输出的触摸敏感表面，或者是由触摸屏形成的触摸敏感表面的延伸)等中的一种或多种。其他输入设备130与I/O子系统170的其他输入设备控制器171相连接，在其他设备输入控制器171的控制下与处理器180进行信号交互。
显示屏140可用于显示由用户输入的信息或提供给用户的信息以及手机100的各种菜单，还可以接受用户输入。具体的显示屏140可包括显示面板141，以及触控面板142。其中显示面板141可以采用LCD(Liquid Crystal Display，液晶显示器)、OLED(Organic Light-Emitting Diode,有机发光二极管)等形式来配置显示面板141。触控面板142，也称为触摸屏、触敏屏等，可收集用户在其上或附近的接触或者非接触操作(比如用户使用手指、触笔等任何适合的物体或附件在触控面板142上或在触控面板142附近的操作，也可以包括体感操作；该操作包括单点控制操作、多点控制操作等操作类型。)，并根据预先设定的程式驱动相应的连接装置。可选的，触控面板142可包括触摸检测装置和触摸控制器两个部分。其中，触摸检测装置检测用户的触摸方位、姿势，并检测触摸操作带来的信号，将信号传送给触摸控制器；触摸控制器从触摸检测装置上接收触摸信息，并将它转换成处理器能够处理的信息，再送给处理器180，并能接收处理器 180发来的命令并加以执行。此外，可以采用电阻式、电容式、红外线以及表面声波等多种类型实现触控面板142，也可以采用未来发展的任何技术实现触控面板142。进一步的，触控面板142可覆盖显示面板141，用户可以根据显示面板141显示的内容(该显示内容包括但不限于，软键盘、虚拟鼠标、虚拟按键、图标等等)，在显示面板141上覆盖的触控面板142上或者附近进行操作，触控面板142检测到在其上或附近的操作后，通过I/O子系统170传送给处理器180以确定用户输入，随后处理器180根据用户输入通过I/O子系统170在显示面板141上提供相应的视觉输出。虽然在图4中，触控面板142与显示面板141是作为两个独立的部件来实现手机100的输入和输入功能，但是在某些实施例中，可以将触控面板142与显示面板141集成而实现手机100的输入和输出功能。
手机100还可包括至少一种传感器150，比如光传感器、运动传感器以及其他传感器。具体地，光传感器可包括环境光传感器及接近传感器，其中，环境光传感器可根据环境光线的明暗来调节显示面板141的亮度，接近传感器可在手机100移动到耳边时，关闭显示面板141和/或背光。作为运动传感器的一种，加速计传感器可检测各个方向上(一般为三轴)加速度的大小，静止时可检测出重力的大小及方向，可用于识别手机姿态的应用(比如横竖屏切换、相关游戏、磁力计姿态校准)、振动识别相关功能(比如计步器、敲击)等；至于手机100还可配置的陀螺仪、气压计、湿度计、温度计、红外线传感器等其他传感器，在此不再赘述。
音频电路160、扬声器161，麦克风162可提供用户与手机100之间的音频接口。音频电路160可将接收到的音频数据转换后的信号，传输到扬 声器161，由扬声器161转换为声音信号输出；另一方面，麦克风162将收集的声音信号转换为信号，由音频电路160接收后转换为音频数据，再将音频数据输出至RF电路108以发送给比如另一手机，或者将音频数据输出至存储器120以便进一步处理。
I/O子系统170用来控制输入输出的外部设备，可以包括其他设备输入控制器171、传感器控制器172、显示控制器173。可选的，一个或多个其他输入控制设备控制器171从其他输入设备130接收信号和/或者向其他输入设备130发送信号，其他输入设备130可以包括物理按钮(按压按钮、摇臂按钮等)、拨号盘、滑动开关、操纵杆、点击滚轮、光鼠(光鼠是不显示可视输出的触摸敏感表面，或者是由触摸屏形成的触摸敏感表面的延伸)。值得说明的是，其他输入控制设备控制器171可以与任一个或者多个上述设备连接。所述I/O子系统170中的显示控制器173从显示屏140接收信号和/或者向显示屏140发送信号。显示屏140检测到用户输入后，显示控制器173将检测到的用户输入转换为与显示在显示屏140上的用户界面对象的交互，即实现人机交互。传感器控制器172可以从一个或者多个传感器150接收信号和/或者向一个或者多个传感器150发送信号。
尽管未示出，手机100还可以包括摄像头、蓝牙模块等，在此不再赘述。
图8所示的充电器以及图9、图10所示的终端的功能的具体实现过程可以参见前述方法流程图，这里不再赘述。

Claims (31)

  1. 一种充电保护方法，其特征在于，包括：
    终端获取第一电流值和第二电流值，在充电器向所述终端充电的过程中，所述充电器的输出电流值为所述第一电流值，所述终端的输入电流值为所述第二电流值；
    所述终端计算所述第一电流值与所述第二电流值的差值；
    在所述差值大于保护电流门限值的情况下，所述终端终止所述充电器向所述终端充电的过程。
  2. 根据权利要求1所述的方法，其特征在于，在所述终端终止所述充电器向所述终端充电的过程之前，还包括：
    在所述差值大于预警电流门限值的情况下，所述终端发出提示信息，所述预警电流门限值小于所述保护电流门限值。
  3. 根据权利要求1或2所述的方法，其特征在于，所述终端终止所述充电器向所述终端充电的过程包括：
    所述终端通知所述充电器终止向所述终端充电；和/或，
    所述终端终止所述充电的过程。
  4. 根据权利要求1至3任一项所述的方法，其特征在于，所述获取第一电流值包括：
    向所述充电器发送电流获取请求；
    接收所述充电器发送的所述第一电流值。
  5. 一种充电保护方法，其特征在于，包括：
    终端获取在充电器向所述终端充电的过程中的功率损失；
    在所述功率损失大于保护功率门限值的情况下，所述终端终止所述充电器向所述终端充电的过程。
  6. 根据权利要求5所述的方法，其特征在于，所述获取在充电器向所述终端充电的过程中的功率损失包括：
    获取第一电流值、第一电压值、第二电流值和第二电压值，在所述充电器向所述终端充电的过程中，所述充电器的输出电流值为所述第一电流值，所述充电器的输出电压值为所述第一电压值，所述终端的输入电流值为所述第二电流值，所述终端的输入电压值为所述第二电压值；
    通过计算第一功率值和第二功率值的差值，得到所述功率损失，所述一功率值为所述第一电流值与所述第一电压值的乘积，所述第二功率值为所述第二电流值与所述第二电压值的乘积。
  7. 根据权利要求5所述的方法，其特征在于，所述获取在充电器向所述终端充电的过程中的功率损失包括：
    获取第一电流值、第一电压值、第二电压值、第三电压值和第三电流值，在所述充电器向所述终端充电的过程中，所述充电器的输出电流值为所述第一电流值，所述充电器的输出电压值为所述第一电压值，所述终端的输入电压值为所述第二电压值，所述终端的电池两端的电压值为所述第三电压值，所述终端的电池的电流值为所述第三电流值；
    通过计算Pc＝(Ua-Ub)*Ia+(Ub-U电池)*I电池，得到所述功率损失Pc，其中，Ua为所述第一电压值，Ub为所述第二电压值，Ia为所述第一电流值，U电池为所述第三电压值，I电池为所述第三电流值。
  8. 根据权利要求5至7任一项所述的方法，其特征在于，在所述终端 终止所述充电器向所述终端充电的过程之前，还包括：
    在所述功率损失大于预警功率门限值的情况下，所述终端发出提示信息，所述预警功率门限值小于所述保护功率门限值。
  9. 根据权利要求5至8任一项所述的方法，其特征在于，所述终止所述充电器向所述终端充电的过程包括：
    通知所述充电器终止向所述终端充电；和/或，
    所述终端终止所述充电的过程。
  10. 根据权利要求6至9任一项所述的方法，其特征在于，获取所述第一电流值和所述第一电压值包括：
    向所述充电器发送获取电流值和电压值的请求；
    接收所述充电器发送的所述第一电流值和所述第一电压值。
  11. 一种充电保护方法，其特征在于，包括：
    终端获取第一温度值和第二温度值，在充电器向所述终端充电的过程中，所述充电器的充电输出端口的温度值为所述第一温度值，所述终端的充电输入端口的温度值为所述第二温度值；
    在所述第一温度值大于第一温度保护门限值，或者，所述第二温度值大于第二温度保护门限值的情况下，所述终端终止所述充电器向所述终端充电的过程。
  12. 根据权利要求11所述的方法，其特征在于，在所述终端终止所述充电器向所述终端充电的过程之前，还包括：
    在所述第一温度值大于第一告警温度门限值，或者所述第二温度值大于第二告警温度门限值的情况下，所述终端发出提示信息，所述第一告警 温度门限值小于所述第一保护温度门限值，所述第二告警温度门限值小于所述第二保护温度门限值。
  13. 根据权利要求11或12所述的方法，其特征在于，所述获取第一温度值包括：
    向所述充电器发送获取温度值的请求；
    接收所述充电器发送的所述第一温度值。
  14. 根据权利要求11至13任一项所述的方法，其特征在于，所述终止所述充电器向所述终端充电的过程包括：
    通知所述充电器终止向所述终端充电；和/或，
    所述终端终止所述充电的过程。
  15. 一种充电器，其特征在于，包括：
    功率输出电路、控制器和模拟-数字转换器；
    其中，所述功率输出电路用于输出功率；
    所述控制器用于接收获取参数的请求，所述参数包括所述功率输出电路的输出电流值以及输出电压值的至少一项；
    所述模拟-数字转换器用于测量所述输出电流值和/或所述输出电压值；
    所述控制器还用于发送所述参数。
  16. 根据权利要求15所述的充电器，其特征在于，还包括：
    设置在所述充电器的充电输出端口的温度传感器；
    所述控制器还用于：
    接收温度获取请求，获取所述温度传感器感应到的温度值，并发送所述温度值。
  17. 一种终端，其特征在于，包括：
    通信组件，用于获取在充电器向所述终端充电的过程中，所述充电器的输出电流值；
    处理器，用于计算所述充电器的输出电流值与所述终端的输入电流值的差值，并在所述差值大于保护电流门限值的情况下，终止所述充电器向所述终端充电的过程。
  18. 根据权利要求17所述的终端，其特征在于，所述处理器还用于：
    在所述终止所述充电器向所述终端充电的过程之前，在所述差值大于预警电流门限值的情况下，发出提示信息，所述预警电流门限值小于所述保护电流门限值。
  19. 根据权利要求17或18所述的终端，其特征在于，所述处理器用于终止所述充电器向所述终端充电的过程包括：
    所述处理器具体用于，通过所述通信组件通知所述充电器终止向所述终端充电；和/或，终止所述终端的充电过程。
  20. 根据权利要求17或18、19所述的终端，其特征在于，所述通信组件包括：
    发送器，用于向所述充电器发送电流获取请求；
    接收器，用于接收所述充电器发送的所述充电器的输出电流值。
  21. 一种终端，其特征在于，包括：
    通信组件，用于获取在所述充电器向所述终端充电的过程中，所述充电器的输出电流值和输出电压值；
    处理器，用于依据所述充电器的输出电流值和输出电压值，获取在充 电器向所述终端充电的过程中的功率损失，并在所述功率损失大于保护功率门限值的情况下，所述终端终止所述充电器向所述终端充电的过程。
  22. 根据权利要求21所述的终端，其特征在于，所述处理器用于获取在充电器向所述终端充电的过程中的功率损失包括：
    所述处理器具体用于，通过计算第一功率值和第二功率值的差值，得到所述功率损失，所述第一功率值为所述充电器的输出电流值与所述充电器的输出电压值的乘积，所述第二功率值为所述终端的输入电流值与所述终端的输入电压值的乘积。
  23. 根据权利要求21所述的终端，其特征在于，还包括:
    通信组件，用于获取在所述充电器向所述终端充电的过程中，所述充电器的输出电流值和输出电压值；
    所述处理器用于获取在充电器向所述终端充电的过程中的功率损失包括：
    所述处理器具体用于，通过计算Pc＝(Ua-Ub)*Ia+(Ub-U电池)*I电池，得到所述功率损失Pc，其中，Ua为所述充电器的输出电压值，Ub为所述终端的输入电压值，Ia为所述充电器的输出电流值，U电池为所述终端的电池两端的电压值，I电池为所述终端的电池的电流值。
  24. 根据权利要求21至23任一项所述的终端，其特征在于，所述处理器还用于：
    在所述终止所述充电器向所述终端充电的过程之前，在所述功率损失大于预警功率门限值的情况下，发出提示信息，所述预警功率门限值小于所述保护功率门限值。
  25. 根据权利要求21至24任一项所述的终端，其特征在于，所述处理器用于终止所述充电器向所述终端充电的过程包括：
    所述处理器具体用于，通过所述通信组件通知所述充电器终止向所述终端充电；和/或，终止所述终端的充电过程。
  26. 根据权利要求21至25任一项所述的终端，其特征在于，所述通信组件包括：
    发送器，用于向所述充电器发送获取电流值和电压值的请求；
    接收器，用于所述充电器发送的、所述充电器的输出电流值和输出电压值。
  27. 一种终端，其特征在于，包括：
    通信组件，用于获取在充电器向所述终端充电的过程中，所述充电器的充电输出端口的温度值；
    处理器，用于在所述充电器的充电输出端口的温度值大于第一温度保护门限值，或者，所述终端的充电输入端口的温度值大于第二温度保护门限值的情况下，终止所述充电器向所述终端充电的过程。
  28. 根据权利要求27所述的终端，其特征在于，还包括：
    设置在所述终端的充电输入端口的温度传感器；
    所述处理器还用于：获取所述温度传感器感应到的、所述终端的充电输入端口的温度值。
  29. 根据权利要求27或28所述的终端，其特征在于，所述处理器还用于：
    在所述终止所述充电器向所述终端充电的过程之前，在所述充电器的 充电输出端口的温度值大于第一告警温度门限值，或者所述终端的充电输入端口的温度值大于第二告警温度门限值的情况下，发出提示信息，所述第一告警温度门限值小于所述第一保护温度门限值，所述第二告警温度门限值小于所述第二保护温度门限值。
  30. 根据权利要求27至29任一项所述的终端，其特征在于，所述通信组件包括：
    发送器，用于向所述充电器发送获取温度值的请求；
    接收器，用于所述充电器发送的、所述充电器的充电输出端口的温度值。
  31. 根据权利要求27至30任一项所述的终端，其特征在于，所述处理器用于终止所述充电器向所述终端充电的过程包括：
    所述处理器具体用于，通过所述通信组件通知所述充电器终止向所述终端充电；和/或，终止所述终端的充电过程。
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