WO2017088138A1 - 移动终端的充电装置 - Google Patents

移动终端的充电装置 Download PDF

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Publication number
WO2017088138A1
WO2017088138A1 PCT/CN2015/095628 CN2015095628W WO2017088138A1 WO 2017088138 A1 WO2017088138 A1 WO 2017088138A1 CN 2015095628 W CN2015095628 W CN 2015095628W WO 2017088138 A1 WO2017088138 A1 WO 2017088138A1
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WO
WIPO (PCT)
Prior art keywords
circuit
power supply
control chip
charging device
current
Prior art date
Application number
PCT/CN2015/095628
Other languages
English (en)
French (fr)
Inventor
陈社彪
张俊
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
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 CN201580033070.XA priority Critical patent/CN106471702B/zh
Priority to PCT/CN2015/095628 priority patent/WO2017088138A1/zh
Priority to EP15897378.4A priority patent/EP3197008B1/en
Priority to TW105119469A priority patent/TWI627816B/zh
Priority to US15/402,864 priority patent/US10622821B2/en
Publication of WO2017088138A1 publication Critical patent/WO2017088138A1/zh

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
    • H02J7/04—Regulation of charging current or voltage
    • 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
    • H02J7/0042—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction
    • H02J7/0044—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction specially adapted for holding portable devices containing batteries
    • 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
    • H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
    • H02J7/00714—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery charging or discharging current
    • 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
    • H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
    • H02J7/007182—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage
    • 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
    • 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
    • H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially

Definitions

  • Embodiments of the present invention relate to the field of charging, and, more particularly, to a charging apparatus for a mobile terminal.
  • the charging device of the existing mobile terminal generally includes an adapter, a charging treasure, and the like.
  • an adapter usually takes an alternating current from a commercial power source, and then converts the alternating current into a direct current suitable for charging the mobile terminal through operations such as alternating current and rectification.
  • the adapter typically converts 220V AC power into 5V DC power as the charging voltage of the mobile terminal.
  • Embodiments of the present invention provide a charging apparatus for a mobile terminal to improve the intelligence of the charging apparatus of the mobile terminal.
  • a first aspect provides a charging device for a mobile terminal, comprising: an input end for receiving alternating current; a universal serial bus USB interface for connecting the charging device to the mobile terminal; and a power supply circuit
  • the input end is connected to the USB interface, and the power supply circuit is configured to convert the alternating current input by the input end into direct current, and transmit the output power of the power supply circuit to the mobile terminal through the USB interface, Charging the battery of the mobile terminal;
  • the charging device further includes: a control chip connected to the USB interface, wherein the control chip exchanges data with the mobile terminal through a data line in the USB interface; and the current detecting circuit Connected to the power supply circuit for detecting a current output current of the power supply circuit; a voltage detection circuit connected to the power supply circuit for detecting a current output voltage of the power supply circuit; and a digital-to-analog converter, respectively
  • the current detecting circuit, the voltage detecting circuit and the control chip are connected, the current detecting circuit and the voltage detecting electricity Respectively controlled by said chip
  • control chip, the current detecting circuit, the digital-to-analog converter, the voltage detecting circuit, and the power adjusting circuit are located in the same integrated circuit. .
  • the digital-to-analog converter is further connected to a pin of the data line in the USB interface for acquiring a voltage value of the data line pin, and transmitting a voltage value of the data line pin to the control chip; the control chip is further configured to pass the power according to a voltage value of the data line pin Adjusting the circuit to adjust the output power of the power supply circuit.
  • the charging device further includes: a selection circuit, a first input end of the selection circuit and the control chip Connected, the second input end of the selection circuit is directly connected to the digital-to-analog converter without passing through the control chip, and an output end of the selection circuit is connected to the power adjustment circuit, and the selection circuit is used for Selecting a current control signal from a current control signal input by the first input terminal and a current control signal input by the second input terminal, and based on the selected current control signal, by the power adjustment circuit, the power supply circuit The output current is adjusted.
  • the charging device further includes: a switch circuit, the switch circuit is connected in series on the power supply circuit, and The control chip is connected; the control chip is further configured to control, by the switch circuit, on and off of a charging circuit between the charging device and the mobile terminal.
  • the switch circuit includes: a switch tube assembly, the switch tube assembly is connected in series in the power supply circuit; a pump, one end of the charge pump is connected to the control end of the switch tube assembly, and the other end of the charge pump is connected to the control chip; the control chip is further configured to generate a target control voltage by the charge pump, The switch tube assembly is controlled to be turned on, wherein the target control voltage is greater than an operating voltage of the charging device.
  • the switch tube assembly in another implementation of the first aspect, includes a first switch tube and a second switch tube, the first switch tube and the The second switch tube is connected in series in the power supply circuit, and the first switch tube and the second switch tube are disposed back to back.
  • the charging device further includes: a temperature detecting circuit, the temperature detecting circuit is connected to the digital-to-analog converter And transmitting, by the digital-to-analog converter, the detected temperature to the control chip; the control chip is further configured to control on-off of the switch circuit according to a temperature detected by the temperature detecting circuit.
  • the temperature detecting circuit includes: a temperature sensor connected to the digital-to-analog converter; A temperature coefficient resistor, one end of the negative temperature coefficient resistor is connected to the temperature sensor, and the other end is connected to the ground.
  • the voltage detecting circuit includes a first voltage detecting circuit and a second voltage detecting circuit, the first voltage detecting The circuit and the second voltage detecting circuit are respectively disposed at both ends of the switching circuit.
  • the power supply circuit and the switch circuit are located in the same integrated circuit.
  • the charging device further includes: a load circuit respectively connected to the power supply circuit and the control chip;
  • the control chip is further configured to control the load circuit to be turned on when an output voltage of the power supply circuit is less than a preset voltage threshold, and supply power to the load device in the load circuit through the power supply circuit to maintain the power supply The stability of the circuit.
  • the load circuit includes: a third switch tube, a control end of the third switch tube, and the control The chip is connected, the input end of the third switch tube is connected to the power supply circuit, the output end of the third switch tube is connected to the ground, and the load resistor is connected in series between the third switch tube and the ground.
  • the control chip performs at least one of the following operations by using a data line in the USB interface: shorting a D+ data line and a D-data line in the USB interface; interacting data with a data line in the USB interface through a universal input/output GPIO port; and interacting with the mobile terminal to asynchronously transmit and receive data in a UART format
  • control chip is further connected to an ID line in the USB interface, and the controller is further used to Whether the charging data line between the charging device and the mobile terminal is a data line supporting fast charging is identified by the ID line.
  • the power supply circuit includes: a transformer; an input circuit located at a primary side of the coil of the transformer, the input The circuit includes a controller for controlling a voltage of the input circuit; an output circuit located at a secondary side of the coil of the transformer; the power adjustment circuit includes: a potentiometer and a first operational amplifier, the potentiometer respectively The control chip is connected to the output circuit, and the potentiometer is connected to a controller in the input circuit through the first operational amplifier, and an output voltage of the power supply circuit is adjusted by the controller.
  • the current detecting circuit includes: a second operational amplifier, two inputs of the second operational amplifier are connected in parallel An output terminal of the second operational amplifier is connected to the digital-to-analog converter at both ends of the current detecting resistor in the power supply circuit, and the second operational amplifier detects a voltage drop across the current detecting resistor The output current of the power supply circuit.
  • control chip is a micro control unit (MCU).
  • MCU micro control unit
  • the data line in the USB interface is a D+ data line and a D-data line, where the D+ data Lines are used to provide clock signals, and D-data lines are used to transmit data.
  • the switch tube assembly includes one or more switch tubes, and the switch tube in the switch tube assembly is metal One or any combination of an oxide semiconductor field effect transistor MOSFET, an insulated gate bipolar transistor IGBT, an integrated gate commutated thyristor IGCT, and a thyristor rectifier SCR.
  • Embodiments of the present invention provide a charging device for a mobile terminal, by setting a control chip in the charging device, performing data exchange between the control chip and the mobile terminal, and setting a current detecting circuit, a voltage detecting circuit, and a digital-to-analog conversion around the control chip.
  • Circuits such as circuits and power adjustment circuits improve the intelligence of mobile terminals, thus providing a hardware foundation for fast charging and safe charging.
  • FIG. 1 is a schematic structural diagram of a charging apparatus of a mobile terminal according to an embodiment of the present invention.
  • FIG. 1 is a schematic structural diagram of a charging apparatus of a mobile terminal according to an embodiment of the present invention.
  • the charging device 10 of Figure 1 includes:
  • the input terminal 11 is configured to receive an alternating current
  • USB Universal Serial Bus
  • the power supply circuit 13 is respectively connected to the input terminal 11 and the USB interface 12, and the power supply circuit 13 is configured to convert the alternating current input by the input terminal 11 into direct current, and the power supply is provided through the USB interface 12.
  • the output power of the circuit 13 is transmitted to the mobile terminal to charge a battery of the mobile terminal;
  • the charging device 10 further includes:
  • the control chip 14 is connected to the USB interface 12, and the control chip 14 exchanges data with the mobile terminal through the data line in the USB interface 12;
  • a current detecting circuit 15 connected to the power supply circuit 13 for detecting a current output current of the power supply circuit 13;
  • a voltage detecting circuit 16 connected to the power supply circuit 13 for detecting a current output voltage of the power supply circuit 13;
  • a digital-to-analog converter 17 is respectively connected to the current detecting circuit 15, the voltage detecting circuit 16, and the control chip 14, and the current detecting circuit 15 and the voltage detecting circuit 16 respectively pass through the digital-to-analog converter 17 providing the control chip 14 with a current value of the current output current and a voltage value of the current output voltage;
  • the power adjustment circuit 18 adjusts the output power of the power supply circuit 13 based on the control of the control chip 14.
  • Embodiments of the present invention provide a charging device for a mobile terminal, by setting a control chip in the charging device, performing data exchange between the control chip and the mobile terminal, and setting a current detecting circuit, a voltage detecting circuit, and a digital-to-analog conversion around the control chip.
  • Circuits such as circuits and power adjustment circuits improve the intelligence of mobile terminals, thus providing a hardware foundation for fast charging and safe charging.
  • the mobile terminal can be a mobile phone; in one embodiment, the mobile terminal can also be a pad.
  • the USB interface 12 may be a normal USB interface or a Micro USB interface.
  • the USB interface may include five pins, for example, including D+ data lines, D-data lines, ID lines, VBus, and ground lines, but the embodiment of the present invention is not limited thereto.
  • the USB interface may be specifically The USB interface designed for fast charging, for example, can be a 7-pin USB interface, where the new pin is used with the original charging line to carry a larger charging current.
  • the embodiment of the present invention does not limit the specific form of the power supply circuit 13.
  • the transformer 22 shown in FIG. 1 can be used, and the primary side of the transformer 22 is connected to the rectifier bridge 19 and the AC-DC primary side controller 20 (which can be used for the primary side) The voltage is adjusted), the secondary side of the transformer 22 can be connected to the rectification driver 21, and then the rectified output current is transmitted to the VBus of the USB interface 12.
  • control chip 14 can be selected according to actual needs, for example, it can be selected according to the actual function to be implemented or the type of interface to be provided.
  • control chip 14 may include its own read-only memory (ROM), random access memory (RAM), for example, the control chip 14 includes 16 KB of ROM and 1 KB of RAM.
  • control chip 14 can be an MCU.
  • the control chip 14 can exchange data with the mobile terminal through the data lines in the USB interface 12. Alternatively, the control chip 14 can communicate with the mobile terminal via a data line in the USB interface 12. For example, the control chip 14 can perform two-way communication with the mobile terminal through the data line in the USB interface 12, and mutually transmit handshake information and the like. By controlling the communication between the chip 14 and the mobile terminal, the two parties can jointly negotiate the charging mode, or when one party has a security risk, the other party can be notified immediately, the intelligence of the charging device is improved, and the charging device is quickly charged and safely charged. Provides a hardware foundation.
  • the specific manner in which the control chip 14 interacts with the mobile terminal through the data line in the USB interface 12 can be various.
  • the clock signal is provided through the D+ data line in the USB interface 12, and the data is transmitted through the D-data line in the USB interface 12. .
  • the current detecting circuit 15 can detect the current output current of the power supply circuit 13 in various manners.
  • the current detecting circuit 15 may include: a second operational amplifier 23, two input ends of the second operational amplifier 23 are connected in parallel across the current detecting resistor 24 in the power supply circuit 13, and an output end of the second operational amplifier 23 is connected to the digital-to-analog converter 17.
  • the second operational amplifier 23 detects an output current of the power supply circuit 13 through a voltage drop across the current detecting resistor 24.
  • the voltage detecting circuit 16 can detect the current output voltage of the power supply circuit 13 in various manners. Alternatively, as an embodiment, as shown in FIG. 1, the voltage detecting circuit 16 detects by using two resistors. The current output voltage of the power supply circuit 13. The embodiment of the present invention does not specifically limit the position and the number of the voltage detecting circuit 16. As shown in FIG. 1, the voltage detecting circuit 16 may include a first voltage detecting circuit 16 and a second voltage detecting circuit 16, and the first voltage detecting The circuit 16 and the second voltage detecting circuit 16 are respectively disposed at both ends of the switching circuit 25. In practice, voltage detection of the power supply circuit 13 can be performed by selecting at least one of the two voltage detection circuits based on actual conditions (eg, based on which detection is more accurate).
  • the specific type of the digital-to-analog converter 17 (the ADC in FIG. 1) is not limited in the embodiment of the present invention, as long as the analog signal detected by the current detecting circuit 15 and the voltage detecting circuit 16 can be converted into a digital signal.
  • the digital-to-analog converter 17 can also be connected to the temperature sensor 26 measuring the temperature in the vicinity of the control chip 14, and transmit the measured temperature to the control chip 14, and the control chip 14 can control the on/off of the power supply circuit 13 according to the temperature in the vicinity thereof. For example, when the temperature is greater than a preset temperature threshold, the power supply circuit 13 is turned off.
  • a reference voltage (such as Vref in FIG. 1) may be provided to digital to analog converter 17 for reference by digital to analog converter 17 during digital to analog signal conversion.
  • the form of the power conditioning circuit 18 can vary.
  • a potentiometer 27 can be included, which can be a digital potentiometer.
  • the output voltage of the power supply circuit 13 can be adjusted by sliding the potentiometer 27.
  • the power adjustment circuit 18 may further include a first operational amplifier 28 through which the controller 20 (AC-DC primary controller) on the primary side of the transformer 22 can be connected and adjusted by the controller 20 The output current of the power supply circuit 13.
  • the circuit device in the embodiment of the present invention has many structures, functions and functions are relatively complicated, in order to make the circuit structure simpler and lower in cost, optionally, as an embodiment, the control core can be
  • the slice 14, the current detecting circuit 15, the digital-to-analog converter 17, the voltage detecting circuit 16, and the power adjusting circuit 18 are integrated in one integrated circuit.
  • the digital-to-analog converter 17 is further connected to a pin of a data line in the USB interface 12 for acquiring a voltage value of the data line pin, and The voltage value of the data line pin is transmitted to the control chip 14; the control chip 14 is further configured to adjust the output of the power supply circuit 13 through the power adjustment circuit 18 according to the voltage value of the data line pin. power.
  • the ADC (digital-to-analog conversion) multiplexing function can be added to the D+D- pin, enabling the control chip 14 to detect the voltage on the D+D- pin to achieve a more D+D- based voltage value. More features and control logic.
  • the charging device 10 may further include: a selection circuit 29, a first input end of the selection circuit may be connected to the control chip 14, and a second input end of the selection circuit 29
  • the digital-to-analog converter 17 can be directly connected to the control chip without the control chip.
  • the output of the selection circuit 29 can be connected to the power adjustment circuit 18, and the selection circuit 29 can be used for the first input. Selecting a current control signal from the input current control signal and the current control signal input by the second input terminal, and adjusting the output current of the power supply circuit through the power adjustment circuit based on the selected current control signal .
  • the current detecting circuit 15, the digital-to-analog converter 17, and the selecting circuit 29 are hardware circuits capable of realizing current adjustment, and the hardware circuit can reduce the burden of the control chip 14 and improve the charging device without the participation of the control chip 14. 10 processing efficiency.
  • the control chip 14 can also control the output current of the power supply circuit 13 through the selection circuit 29.
  • one of the two current control signals may be selected by the selection circuit 29 to control the output current of the power supply circuit 13.
  • the selection circuit 29 may be a switch circuit, which may be determined by a hardware circuit according to actual needs.
  • the current is controlled to control the current by the control chip 14, or the selection circuit may include a comparator for selecting a smaller value from the current values indicated by the hardware circuit and the current control signal of the control chip 14, based on the smaller value pair.
  • the current of the power supply circuit 13 is controlled.
  • the charging device 10 may further include: a switch circuit 25, the switch circuit 26 may be connected in series on the power supply circuit 13 and connected to the control chip 14; the control chip 14 can also be used to control the switching of the charging circuit between the charging device 10 and the mobile terminal through the switching circuit 25.
  • the switch circuit 25 can ensure the timely disconnection of the circuit in the event of a fault, and the charging device is improved. Security.
  • the switch circuit 25 can be in various forms.
  • the switch circuit 25 can include: a switch tube assembly 30, the switch tube assembly 30 being connected in series in the power supply circuit; and a charge pump (Charge Pump) 31, one end of the charge pump 31 can be connected to the control end of the switch tube assembly 30, the other end of the charge pump 31 can be connected to the control chip 14; the control chip 14 can also be used to pass through
  • the charge pump 31 generates a target control voltage, and the switch tube assembly 30 is controlled to be turned on, wherein the target control voltage is greater than an operating voltage (VDD) of the charging device 10.
  • VDD operating voltage
  • the charge pump can increase the voltage at the control terminal of the switch, for example, to 3 times VDD, thereby achieving a sufficiently high voltage to enable the switch tube assembly 30 to be fully turned on.
  • the switch assembly 30 can also be in various forms, for example, it can include only one switch tube, or can include multiple switch tubes.
  • the switch tube assembly 30 may include a first switch tube and a second switch tube, the first switch tube and the second switch tube being connected in series in the power supply circuit 13 , and The first switch tube and the second switch tube are arranged back to back. Setting the two switch tubes back to back can avoid reverse leakage caused by parasitic diodes in the switch tube.
  • the charging device 10 may further include: a temperature detecting circuit 31, the temperature detecting circuit 31 may be connected to the digital-to-analog converter 17, and the digital-to-analog converter 17 may The detected temperature is transmitted to the control chip 14; the control chip 14 can also be used to control the switching of the switching circuit 25 in accordance with the temperature detected by the temperature detecting circuit 31.
  • the specific position of the temperature detecting circuit 31 is not limited in the embodiment of the present invention.
  • the temperature detecting circuit 31 can be set to the vicinity of the USB interface 12 when the temperature of the USB interface 12 is greater than or equal to the preset temperature.
  • the switching circuit 25 can be controlled to be turned off by the control chip 14, thereby ensuring the safety of the charging device.
  • the temperature detecting circuit 31 may include a temperature sensor connected to the digital-to-analog converter; a negative temperature coefficient resistor, One end of the negative temperature coefficient resistor is connected to the temperature sensor and the other end is connected to the ground.
  • the temperature detecting circuit can also switch to the external temperature, and the temperature switch can be connected to the control chip 14, and the control chip 14 determines whether the temperature detecting function is enabled.
  • the charging device 10 may further include: a load circuit respectively connected to the power supply circuit 13 and the control chip 14; the control chip 14 may also be used in the power supply circuit 13 Controlling the load circuit to be turned on when the output voltage is less than a preset voltage threshold, and powering the load device in the load circuit through the power supply circuit 13 to maintain the The power supply circuit is stable.
  • the load circuit may include: a third switch tube, a control end of the third switch tube is connected to the control chip, an input end of the third switch tube is connected to the power supply circuit, and the third switch The output of the tube is connected to ground; a load resistor is connected in series between the third switch tube and ground.
  • control chip 14 can perform at least one of the following operations through the data lines in the USB interface 12: shorting the D+ data lines and the D-data lines in the USB interface, for example, at the charging device and moving When the terminal is connected, the D+ data line and the D-data line in the USB interface can be short-circuited through the control chip 14 to provide a normal charging mode, so that the technology can be better compatible with the absorption.
  • the control chip 14 can also exchange data with the data line in the USB interface through a General Purpose Input Output (GPIO) port; or interact with the mobile terminal to transmit a universal asynchronous transceiver (Universal Asynchronous Receiver/ Transmitter, UART) format data.
  • GPIO General Purpose Input Output
  • UART Universal Asynchronous Receiver/ Transmitter
  • control chip 14 may also be connected to an ID line in the USB interface 12, and the controller may be further configured to identify the charging device 10 and the mobile by using the ID line. Whether the charging data line between the terminals is a data line that supports fast charging.
  • the chip can be set in the charging data line, and the signal is sent to the chip in the charging data line by the control chip 14.
  • the data line supports fast charging. If the response is not received, the data is normal. Line, does not support fast charging.
  • the power supply circuit 13 may include: a transformer; an input circuit located at a primary side of the coil of the transformer, the input circuit including a controller for controlling a voltage of the input circuit; An output circuit located at a secondary side of the coil of the transformer; the power adjustment circuit includes: a potentiometer and a first operational amplifier, the potentiometer being respectively connected to the control chip and the output circuit, and the potentiometer And connecting, by the first operational amplifier, a controller in the input circuit, and adjusting an output voltage of the power supply circuit by the controller.
  • the switch tube of the embodiment of the present invention may be, but not limited to, a metal oxide semiconductor (MOSFET), an insulated gate bipolar transistor (IGBT), and an integrated gate commutated thyristor (Integrated). Gate Commutated Thyristors, IGCT) or Silicon Controlled Rectifier (SCR) power devices or any combination of the above different power devices.
  • MOSFET metal oxide semiconductor
  • IGBT insulated gate bipolar transistor
  • Integrated integrated gate commutated thyristor
  • IGCT Gate Commutated Thyristors
  • SCR Silicon Controlled Rectifier
  • the disclosed systems, devices, and methods may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product.
  • the technical solution of the present invention which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including
  • the instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. .

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

Abstract

本发明实施例提供一种移动终端的充电装置，包括：控制芯片，与USB接口相连，控制芯片通过USB接口中的数据线与移动终端进行数据交换；电流检测电路，与供电电路相连，用于检测供电电路的当前输出电流；电压检测电路，与供电电路相连，用于检测供电电路的当前输出电压；数模转换器，分别与电流检测电路、电压检测电路和控制芯片相连，电流检测电路和电压检测电路分别通过数模转换器向控制芯片提供当前输出电流的电流值和当前输出电压的电压值；功率调整电路，分别与控制芯片和供电电路相连，功率调整电路基于控制芯片的控制对供电电路的输出功率进行调整。本发明实施例提高了移动终端的智能化程度。

Description

移动终端的充电装置 技术领域
本发明实施例涉及充电领域，并且更具体地，涉及一种移动终端的充电装置。
背景技术
随着移动终端(如手机、pad)的快速发展，移动终端的电池的电量问题越来越受到用户和移动终端厂商的关注。
现有的移动终端的充电装置一般包括适配器、充电宝等。以适配器为例，适配器通常从市电取交流电，然后通过交变、整流等操作，将交流电转换称为适于移动终端充电的直流电。例如，适配器通常将220V的交流电转换称为5V的直流电，作为移动终端的充电电压。
但是，随着人们对充电速度、充电安全的要求的逐步提高，这样功能简单的充电装置越来越难以满足移动终端的充电需求。
发明内容
本发明实施例提供一种移动终端的充电装置，以提高移动终端的充电装置的智能化程度。
第一方面，提供一种移动终端的充电装置，包括：输入端，用于接收交流电；通用串行总线USB接口，用于将所述充电装置与所述移动终端相连；供电电路，分别与所述输入端和所述USB接口相连，所述供电电路用于将所述输入端输入的交流电转换成直流电，并通过所述USB接口将所述供电电路的输出功率传输至所述移动终端，为所述移动终端的电池充电；所述充电装置还包括：控制芯片，与所述USB接口相连，所述控制芯片通过所述USB接口中的数据线与所述移动终端进行数据交换；电流检测电路，与所述供电电路相连，用于检测所述供电电路的当前输出电流；电压检测电路，与所述供电电路相连，用于检测所述供电电路的当前输出电压；数模转换器，分别与所述电流检测电路、所述电压检测电路和所述控制芯片相连，所述电流检测电路和所述电压检测电路分别通过所述数模转换器向所述控制芯片提供所述当前输出电流的电流值和所述当前输出电压的电压值；功率调整电 路，分别与所述控制芯片和所述供电电路相连，所述功率调整电路基于所述控制芯片的控制对所述供电电路的输出功率进行调整。
结合第一方面，在第一方面的一种实现方式中，所述控制芯片、所述电流检测电路、所述数模转换器、所述电压检测电路、所述功率调整电路位于同一集成电路中。
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，所述数模转换器还与所述USB接口中的数据线的引脚相连，用于获取所述数据线引脚的电压值，并将所述数据线引脚的电压值传输至所述控制芯片；所述控制芯片还用于根据所述数据线引脚的电压值，通过所述功率调整电路，调整所述供电电路的输出功率。
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，所述充电装置还包括：选择电路，所述选择电路的第一输入端与所述控制芯片相连，所述选择电路的第二输入端不经过所述控制芯片直接与所述数模转换器相连，所述选择电路的输出端与所述功率调整电路相连，所述选择电路用于从所述第一输入端输入的电流控制信号和所述第二输入端输入的电流控制信号中选择一个电流控制信号，并基于选择出的电流控制信号，通过所述功率调整电路，对所述供电电路的输出电流进行调整。
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，所述充电装置还包括：开关电路，所述开关电路串联在所述供电电路上，并与所述控制芯片相连；所述控制芯片还用于通过所述开关电路控制所述充电装置与所述移动终端之间的充电回路的通断。
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，所述开关电路包括：开关管组件，所述开关管组件串联在所述供电电路中；电荷泵，所述电荷泵的一端与所述开关管组件的控制端相连，所述电荷泵的另一端与所述控制芯片相连；所述控制芯片还用于通过所述电荷泵生成目标控制电压，控制所述开关管组件导通，其中，所述目标控制电压大于所述充电装置的工作电压。
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，所述开关管组件包括第一开关管和第二开关管，所述第一开关管和所述第二开关管串联在所述供电电路中，且所述第一开关管和所述第二开关管背靠背设置。
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，所述充电装置还包括：温度检测电路，所述温度检测电路与所述数模转换器相连，通过所述数模转换器将检测到的温度传输至所述控制芯片；所述控制芯片还用于根据所述温度检测电路检测到的温度控制所述开关电路的通断。
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，所述温度检测电路包括：温度传感器，所述温度传感器与所述数模转换器相连；负温度系数电阻，所述负温度系数电阻的一端与所述温度传感器相连，另一端与地相连。
结合第一方面或其上述实现方式的任一种，在第一方面的另一种实现方式中，所述电压检测电路包括第一电压检测电路和第二电压检测电路，所述第一电压检测电路和所述第二电压检测电路分别设置在所述开关电路的两端。
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，所述供电电路和所述开关电路位于同一集成电路中。
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，所述充电装置还包括：负载电路，分别与所述供电电路和所述控制芯片相连；所述控制芯片还用于在所述供电电路的输出电压小于预设的电压阈值时控制所述负载电路导通，通过所述供电电路为所述负载电路中的负载器件供电，以维持所述供电电路的稳定。
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，所述负载电路包括：第三开关管，所述第三开关管的控制端与所述控制芯片相连，所述第三开关管的输入端与所述供电电路相连，所述第三开关管的输出端与地相连；负载电阻，串联在所述第三开关管和地之间。
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，所述控制芯片通过所述USB接口中的数据线执行以下操作中的至少一种：短接所述USB接口中的D+数据线和D-数据线；通过通用输入输出GPIO口向所述USB接口中的数据线交互数据；与所述移动终端交互通用异步收发传输器UART格式的数据
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，所述控制芯片还与所述USB接口中的ID线相连，所述控制器还用于 通过所述ID线识别所述充电装置与所述移动终端之间的充电数据线是否为支持快速充电的数据线。
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，所述供电电路包括：变压器；位于所述变压器的线圈的原边的输入电路，所述输入电路包括控制器，用于控制所述输入电路的电压；位于所述变压器的线圈的副边的输出电路；所述功率调整电路包括：电位器和第一运算放大器，所述电位器分别与所述控制芯片和所述输出电路相连，且所述电位器通过所述第一运算放大器与所述输入电路中的控制器相连，通过所述控制器调节所述供电电路的输出电压。
结合第一方面或其上述实现方式的任一种，在第一方面的另一种实现方式中，所述电流检测电路包括：第二运算放大器，所述第二运算放大器的两个输入端并联在所述供电电路中的电流检测电阻的两端，所述第二运算放大器的输出端与所述数模转换器相连，所述第二运算放大器通过所述电流检测电阻两端的压降检测所述供电电路的输出电流。
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，所述控制芯片为微控制单元MCU。
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USB接口中的数据线为D+数据线和D-数据线，其中，所述D+数据线用于提供时钟信号，D-数据线用于传输数据。
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，所述开关管组件包括一个或多个开关管，所述开关管组件中的开关管为金属氧化层半导体场效应晶体管MOSFET、绝缘栅双极型晶体管IGBT、集成门极换流晶闸管IGCT和可控硅整流器SCR之一或任意组合。
本发明实施例提供了一种移动终端的充电装置，通过在该充电装置中设置控制芯片，通过控制芯片与移动终端进行数据交换，并围绕控制芯片设置电流检测电路、电压检测电路、数模转换电路、功率调整电路等电路，提高了移动终端的智能化程度，从而为快速充电、安全充电等需求提供了硬件基础。
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是本发明实施例的移动终端的充电装置的示意性结构图。
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是本发明实施例的移动终端的充电装置的示意性结构图。图1的充电装置10包括：
输入端11，用于接收交流电；
通用串行总线(Universal Serial Bus，USB)接口12，用于将所述充电装置10与移动终端相连；
供电电路13，分别与所述输入端11和所述USB接口12相连，所述供电电路13用于将所述输入端11输入的交流电转换成直流电，并通过所述USB接口12将所述供电电路13的输出功率传输至所述移动终端，为所述移动终端的电池充电；
所述充电装置10还包括：
控制芯片14，与所述USB接口12相连，所述控制芯片14通过所述USB接口12中的数据线与所述移动终端进行数据交换；
电流检测电路15，与所述供电电路13相连，用于检测所述供电电路13的当前输出电流；
电压检测电路16，与所述供电电路13相连，用于检测所述供电电路13的当前输出电压；
数模转换器17，分别与所述电流检测电路15、所述电压检测电路16和所述控制芯片14相连，所述电流检测电路15和所述电压检测电路16分别通过所述数模转换器17向所述控制芯片14提供所述当前输出电流的电流值和所述当前输出电压的电压值；
功率调整电路18，分别与所述控制芯片14和所述供电电路13相连，所 述功率调整电路18基于所述控制芯片14的控制对所述供电电路13的输出功率进行调整。
本发明实施例提供了一种移动终端的充电装置，通过在该充电装置中设置控制芯片，通过控制芯片与移动终端进行数据交换，并围绕控制芯片设置电流检测电路、电压检测电路、数模转换电路、功率调整电路等电路，提高了移动终端的智能化程度，从而为快速充电、安全充电等需求提供了硬件基础。
在一个实施例中，移动终端可以是手机；在一个实施例中，移动终端也可以是pad。
在一个实施例中，上述USB接口12可以是普通的USB接口，也可以是Micro USB接口。通常情况，USB接口可以包括5个引脚，例如，包括D+数据线、D-数据线、ID线、VBus和地线等，但本发明实施例不限于此，例如，USB接口可以是专门为快速充电而设计的USB接口，例如，可以是7针的USB接口，其中新增的针脚与原来的充电线一起用于承载更大的充电电流。
本发明实施例对供电电路13的具体形式不作限定，例如，可以采用图1所示的变压器22，变压器22的原边连接整流桥19和AC-DC原边控制器20(可以对原边的电压进行调整)，变压器22的副边可以连接整流驱动器21，然后将整流后的输出电流传输至USB接口12的VBus。
控制芯片14的类型可以根据实际需要选择，例如，可以根据实际要实现的功能或需要提供的接口类型等选择。在一个实施例中，控制芯片14可以包括自己的只读存储器(ROM，Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)，例如，控制芯片14包括16KB的ROM和1KB的RAM。在一个实施例中，控制芯片14可以是MCU。
控制芯片14可以通过USB接口12中的数据线与移动终端进行数据交换。可替换地，控制芯片14可以通过USB接口12中的数据线与移动终端进行通信。例如，控制芯片14通过USB接口12中的数据线可与移动终端进行双向通信，互发握手信息等。通过控制芯片14与移动终端之间的通信，双方可以共同协商充电方式，或者，当一方出现安全隐患，可以立刻通知另一方，提高了充电装置的智能程度，为充电装置实现快速充电、安全充电提供了硬件基础。
控制芯片14通过USB接口12中的数据线与移动终端交互的具体方式可以有多种，例如，通过USB接口12中的D+数据线提供时钟信号，通过USB接口12中的D-数据线传输数据。
应理解，电流检测电路15检测供电电路13的当前输出电流的方式可以有多种，可选地，作为一个实施例，如图1所示，所述电流检测电路15可包括：第二运算放大器23，所述第二运算放大器23的两个输入端并联在所述供电电路13中的电流检测电阻24的两端，所述第二运算放大器23的输出端与所述数模转换器17相连，所述第二运算放大器23通过所述电流检测电阻24两端的压降检测所述供电电路13的输出电流。
应理解，电压检测电路16检测供电电路13的当前输出电压的方式可以有多种，可选地，作为一个实施例，如图1所示，电压检测电路16采用两个电阻分压的方式检测供电电路13的当前输出电压。本发明实施例对电压检测电路16的位置和个数不作具体限定，如图1所示，电压检测电路16可以包括第一电压检测电路16和第二电压检测电路16，所述第一电压检测电路16和所述第二电压检测电路16分别设置在开关电路25的两端。实际中，可以根据实际情况(例如基于哪个检测的更准确)，选择两个电压检测电路中的至少一个来进行供电电路13的电压检测。
本发明实施例对数模转换器17(图1中的ADC)的具体类型不作限定，只要能将电流检测电路15和电压检测电路16检测出的模拟信号转换成数字信号即可。此外，数模转换器17还可与测量控制芯片14附近温度的温度传感器26相连，并将测量到的温度传给控制芯片14，控制芯片14可以根据其附近的温度控制供电电路13的通断，例如，当温度大于预设的温度阈值时，断开供电电路13。在一个实施例中，可以向数模转换器17提供参考电压(如图1中的Vref)，供数模转换器17在数模信号转换时参考。
应理解，功率调整电路18的形式可以多种多样。例如，参见图1，可以包括电位器27，该电位器27可以是数字电位器。通过滑动该电位器27能够调整供电电路13的输出电压。此外，功率调整电路18还可包括第一运算放大器28，通过该第一运算放大器28可以连接至变压器22原边的控制器20(AC-DC原边控制器)上，通过该控制器20调整供电电路13的输出电流。
本发明实施例中的电路器件比较多，结构和功能比较复杂，为了能够使电路结构更简单，成本更低，可选地，作为一个实施例，可以将所述控制芯 片14、所述电流检测电路15、所述数模转换器17、所述电压检测电路16、所述功率调整电路18集成在一个集成电路中。
可选地，作为一个实施例，所述数模转换器17还可与所述USB接口12中的数据线的引脚相连，用于获取所述数据线引脚的电压值，并将所述数据线引脚的电压值传输至所述控制芯片14；所述控制芯片14还可用于根据所述数据线引脚的电压值，通过所述功率调整电路18，调整所述供电电路13的输出功率。
换句话说，可以将D+D-引脚添加ADC(数模转换)复用功能，使得控制芯片14能够检测D+D-引脚上的电压，以便基于D+D-的电压值实现更多的功能和控制逻辑。
可选地，作为一个实施例，所述充电装置10还可包括：选择电路29，所述选择电路的第一输入端可与所述控制芯片14相连，所述选择电路29的第二输入端可以不经过所述控制芯片直接与所述数模转换器17相连，所述选择电路29的输出端可与所述功率调整电路18相连，所述选择电路29可用于从所述第一输入端输入的电流控制信号和所述第二输入端输入的电流控制信号中选择一个电流控制信号，并基于选择出的电流控制信号，通过所述功率调整电路，对所述供电电路的输出电流进行调整。
本发明实施例中，电流检测电路15、数模转换器17、选择电路29是能够实现电流调整的硬件电路，该硬件电路无需控制芯片14的参与，能够降低控制芯片14的负担，提高充电装置10的处理效率。当然，控制芯片14也可以通过选择电路29控制供电电路13的输出电流。具体控制时，可以由选择电路29从两个电流控制信号中选择一个对供电电路13的输出电流进行控制，例如，选择电路29可以是一个开关电路，可以根据实际的需要确定是由硬件电路对电流进行控制还是由控制芯片14对电流进行控制，或者，选择电路可以包括比较器，从硬件电路和控制芯片14的电流控制信号指示的电流值中选择一个较小值，基于该较小值对供电电路13的电流进行控制。
可选地，作为一个实施例，所述充电装置10还可包括：开关电路25，所述开关电路26可以串联在所述供电电路13上，并与所述控制芯片14相连；所述控制芯片14还可用于通过所述开关电路25控制所述充电装置10与移动终端之间的充电回路的通断。
开关电路25可以保证电路在出现故障时的及时断开，提高了充电装置 的安全性。开关电路25的形式可以有多种，可选地，在一个实施例中，开关电路25可包括：开关管组件30，所述开关管组件30串联在所述供电电路中；电荷泵(Charge Pump)31，所述电荷泵31的一端可与所述开关管组件30的控制端相连，所述电荷泵31的另一端可与所述控制芯片14相连；所述控制芯片14还可用于通过所述电荷泵31生成目标控制电压，控制所述开关管组件30导通，其中，所述目标控制电压大于所述充电装置10的工作电压(VDD)。
通过电荷泵能够将开关管控制端的电压提升，例如提升至VDD的3倍，从而达到足够高的电压，使开关管组件30能够完全导通。
开关组件30的形式也可以有多种，例如，可以只包括一个开关管，或包括多个开关管。可选地，参见图1，所述开关管组件30可包括第一开关管和第二开关管，所述第一开关管和所述第二开关管串联在所述供电电路13中，且所述第一开关管和所述第二开关管背靠背设置。将两个开关管背靠背设置，能够避免开关管内的寄生二极管产生的反向漏电。
可选地，作为一个实施例，所述充电装置10还可包括：温度检测电路31，所述温度检测电路31可与所述数模转换器17相连，通过所述数模转换器17可以将检测到的温度传输至所述控制芯片14；所述控制芯片14还可用于根据所述温度检测电路31检测到的温度控制所述开关电路25的通断。
本发明实施例对温度检测电路31的具体位置不作限定，例如，由于USB接口12常会出现过热，可以将温度检测电路31设置到USB接口12附近，当USB接口12的温度大于或等于预设温度阈值时，可以通过控制芯片14控制开关电路25断开，从而保证充电装置的安全性。
本发明实施例对温度检测电路31的具体形式也不作限定，例如，参见图1，温度检测电路31可以包括温度传感器，所述温度传感器与所述数模转换器相连；负温度系数电阻，所述负温度系数电阻的一端与所述温度传感器相连，另一端与地相连。当然，温度检测电路还可以外界温度开关，该温度开关可以接到控制芯片14上，由控制芯片14决定是否启用温度检测功能。
可选地，作为一个实施例，所述充电装置10还可包括：负载电路，分别与所述供电电路13和所述控制芯片14相连；所述控制芯片14还可用于在所述供电电路13的输出电压小于预设的电压阈值时控制所述负载电路导通，通过所述供电电路13为所述负载电路中的负载器件供电，以维持所述 供电电路的稳定。具体地，负载电路可包括：第三开关管，所述第三开关管的控制端与所述控制芯片相连，所述第三开关管的输入端与所述供电电路相连，所述第三开关管的输出端与地相连；负载电阻，串联在所述第三开关管和地之间。
应理解，控制芯片14可以通过所述USB接口12中的数据线执行以下操作中的至少一种：短接所述USB接口中的D+数据线和D-数据线，例如，在充电装置和移动终端连接时，可以先通过控制芯片14让USB接口中的D+数据线和D-数据线短接，提供普通充电模式，这样可以更好地兼容吸纳有技术。当然，控制芯片14还可以通过通用输入输出(General Purpose Input Output，GPIO)口向所述USB接口中的数据线交互数据；或者，与所述移动终端交互通用异步收发传输器(Universal Asynchronous Receiver/Transmitter，UART)格式的数据。例如，控制芯片14可以通过GPIO口向移动终端进行握手，可以通过UART口传输适配器的固件升级数据等。
可选地，作为一个实施例，所述控制芯片14还可与所述USB接口12中的ID线相连，所述控制器还可用于通过所述ID线识别所述充电装置10与所述移动终端之间的充电数据线是否为支持快速充电的数据线。
例如，可以在充电数据线中设置芯片，通过控制芯片14向充电数据线中的芯片发送信号，当收到响应信号时，说明数据线支持快速充电，如果未收到响应，说明是普通的数据线，不支持快速充电。
可选地，作为一个实施例，所述供电电路13可包括：变压器；位于所述变压器的线圈的原边的输入电路，所述输入电路包括控制器，用于控制所述输入电路的电压；位于所述变压器的线圈的副边的输出电路；所述功率调整电路包括：电位器和第一运算放大器，所述电位器分别与所述控制芯片和所述输出电路相连，且所述电位器通过所述第一运算放大器与所述输入电路中的控制器相连，通过所述控制器调节所述供电电路的输出电压。
应理解，本发明实施例的开关管可以是但不限于金属氧化物半导体(Metal Oxide Semiconductor，MOSFET)、绝缘栅双极型晶体管(Insulated Gate Bipolar Transistor，IGBT)、集成门极换流晶闸管(Integrated Gate Commutated Thyristors，IGCT)或可控硅整流器(Silicon Controlled Rectifier，SCR)等功率器件或上述不同功率器件的任意组合形式。
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 (20)

  1. 一种移动终端的充电装置，包括：
    输入端，用于接收交流电；
    通用串行总线USB接口，用于将所述充电装置与所述移动终端相连；
    供电电路，分别与所述输入端和所述USB接口相连，所述供电电路用于将所述输入端输入的交流电转换成直流电，并通过所述USB接口将所述供电电路的输出功率传输至所述移动终端，为所述移动终端的电池充电；
    其特征在于，
    所述充电装置还包括：
    控制芯片，与所述USB接口相连，所述控制芯片通过所述USB接口中的数据线与所述移动终端进行数据交换；
    电流检测电路，与所述供电电路相连，用于检测所述供电电路的当前输出电流；
    电压检测电路，与所述供电电路相连，用于检测所述供电电路的当前输出电压；
    数模转换器，分别与所述电流检测电路、所述电压检测电路和所述控制芯片相连，所述电流检测电路和所述电压检测电路分别通过所述数模转换器向所述控制芯片提供所述当前输出电流的电流值和所述当前输出电压的电压值；
    功率调整电路，分别与所述控制芯片和所述供电电路相连，所述功率调整电路基于所述控制芯片的控制对所述供电电路的输出功率进行调整。
  2. 如权利要求1所述的充电装置，其特征在于，所述控制芯片、所述电流检测电路、所述数模转换器、所述电压检测电路、所述功率调整电路位于同一集成电路中。
  3. 如权利要求1或2所述的充电装置，其特征在于，
    所述数模转换器还与所述USB接口中的数据线的引脚相连，用于获取所述数据线引脚的电压值，并将所述数据线引脚的电压值传输至所述控制芯片；
    所述控制芯片还用于根据所述数据线引脚的电压值，通过所述功率调整电路，调整所述供电电路的输出功率。
  4. 如权利要求1-3中任一项所述的充电装置，其特征在于，所述充电 装置还包括：
    选择电路，所述选择电路的第一输入端与所述控制芯片相连，所述选择电路的第二输入端不经过所述控制芯片直接与所述数模转换器相连，所述选择电路的输出端与所述功率调整电路相连，所述选择电路用于从所述第一输入端输入的电流控制信号和所述第二输入端输入的电流控制信号中选择一个电流控制信号，并基于选择出的电流控制信号，通过所述功率调整电路，对所述供电电路的输出电流进行调整。
  5. 如权利要求1-4中任一项所述的充电装置，其特征在于，所述充电装置还包括：
    开关电路，所述开关电路串联在所述供电电路上，并与所述控制芯片相连；
    所述控制芯片还用于通过所述开关电路控制所述充电装置与所述移动终端之间的充电回路的通断。
  6. 如权利要求5所述的充电装置，其特征在于，所述开关电路包括：
    开关管组件，所述开关管组件串联在所述供电电路中；
    电荷泵，所述电荷泵的一端与所述开关管组件的控制端相连，所述电荷泵的另一端与所述控制芯片相连；
    所述控制芯片还用于通过所述电荷泵生成目标控制电压，控制所述开关管组件导通，其中，所述目标控制电压大于所述充电装置的工作电压。
  7. 如权利要求6所述的充电装置，其特征在于，所述开关管组件包括第一开关管和第二开关管，所述第一开关管和所述第二开关管串联在所述供电电路中，且所述第一开关管和所述第二开关管背靠背设置。
  8. 如权利要求5-7中任一项所述的充电装置，其特征在于，所述充电装置还包括：
    温度检测电路，所述温度检测电路与所述数模转换器相连，通过所述数模转换器将检测到的温度传输至所述控制芯片；
    所述控制芯片还用于根据所述温度检测电路检测到的温度控制所述开关电路的通断。
  9. 如权利要求8所述的充电装置，其特征在于，所述温度检测电路包括：
    温度传感器，所述温度传感器与所述数模转换器相连；
    负温度系数电阻，所述负温度系数电阻的一端与所述温度传感器相连，另一端与地相连。
  10. 如权利要求5-9中任一项所述的充电装置，其特征在于，所述电压检测电路包括第一电压检测电路和第二电压检测电路，所述第一电压检测电路和所述第二电压检测电路分别设置在所述开关电路的两端。
  11. 如权利要求5-10中任一项所述的充电装置，其特征在于，所述供电电路和所述开关电路位于同一集成电路中。
  12. 如权利要求1-11中任一项所述的充电装置，其特征在于，所述充电装置还包括：
    负载电路，分别与所述供电电路和所述控制芯片相连；
    所述控制芯片还用于在所述供电电路的输出电压小于预设的电压阈值时控制所述负载电路导通，通过所述供电电路为所述负载电路中的负载器件供电，以维持所述供电电路的稳定。
  13. 如权利要求12所述的充电装置，其特征在于，所述负载电路包括：
    第三开关管，所述第三开关管的控制端与所述控制芯片相连，所述第三开关管的输入端与所述供电电路相连，所述第三开关管的输出端与地相连；
    负载电阻，串联在所述第三开关管和地之间。
  14. 如权利要求1-13中任一项所述的充电装置，其特征在于，所述控制芯片通过所述USB接口中的数据线执行以下操作中的至少一种：
    短接所述USB接口中的D+数据线和D-数据线；
    通过通用输入输出GPIO口向所述USB接口中的数据线交互数据；
    与所述移动终端交互通用异步收发传输器UART格式的数据。
  15. 如权利要求1-14中任一项所述的充电装置，其特征在于，所述控制芯片还与所述USB接口中的ID线相连，所述控制器还用于通过所述ID线识别所述充电装置与所述移动终端之间的充电数据线是否为支持快速充电的数据线。
  16. 如权利要求1-15中任一项所述的充电装置，其特征在于，所述供电电路包括：
    变压器；
    位于所述变压器的线圈的原边的输入电路，所述输入电路包括控制器，用于控制所述输入电路的电压；
    位于所述变压器的线圈的副边的输出电路；
    所述功率调整电路包括：
    电位器和第一运算放大器，所述电位器分别与所述控制芯片和所述输出电路相连，且所述电位器通过所述第一运算放大器与所述输入电路中的控制器相连，通过所述控制器调节所述供电电路的输出电压。
  17. 如权利要求1-16中任一项所述的充电装置，其特征在于，所述电流检测电路包括：
    第二运算放大器，所述第二运算放大器的两个输入端并联在所述供电电路中的电流检测电阻的两端，所述第二运算放大器的输出端与所述数模转换器相连，所述第二运算放大器通过所述电流检测电阻两端的压降检测所述供电电路的输出电流。
  18. 如权利要求1-17中任一项所述的充电装置，其特征在于，所述控制芯片为微控制单元MCU。
  19. 如权利要求1-18中任一项所述的充电装置，其特征在于，所述USB接口中的数据线为D+数据线和D-数据线，其中，所述D+数据线用于提供时钟信号，D-数据线用于传输数据。
  20. 如权利要求1-19中任一项所述的充电装置，其特征在于，所述开关管组件包括一个或多个开关管，所述开关管组件中的开关管为金属氧化层半导体场效应晶体管MOSFET、绝缘栅双极型晶体管IGBT、集成门极换流晶闸管IGCT和可控硅整流器SCR之一或任意组合。
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