[go: up one dir, main page]

WO2017161587A1 - 一种负载供电电路和终端 - Google Patents

一种负载供电电路和终端 Download PDF

Info

Publication number
WO2017161587A1
WO2017161587A1 PCT/CN2016/077426 CN2016077426W WO2017161587A1 WO 2017161587 A1 WO2017161587 A1 WO 2017161587A1 CN 2016077426 W CN2016077426 W CN 2016077426W WO 2017161587 A1 WO2017161587 A1 WO 2017161587A1
Authority
WO
WIPO (PCT)
Prior art keywords
circuit
battery
load
switching element
pin
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2016/077426
Other languages
English (en)
French (fr)
Inventor
钟光华
王远国
张明
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
Original Assignee
Huawei Technologies Co Ltd
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 Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to US16/085,883 priority Critical patent/US11309592B2/en
Priority to CN201680080771.3A priority patent/CN109075704A/zh
Priority to PCT/CN2016/077426 priority patent/WO2017161587A1/zh
Priority to EP16894940.2A priority patent/EP3416273B1/en
Publication of WO2017161587A1 publication Critical patent/WO2017161587A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/10—Regulating voltage or current 
    • G05F1/46—Regulating voltage or current  wherein the variable actually regulated by the final control device is DC
    • G05F1/56—Regulating voltage or current  wherein the variable actually regulated by the final control device is DC using semiconductor devices in series with the load as final control devices
    • G05F1/577—Regulating voltage or current  wherein the variable actually regulated by the final control device is DC using semiconductor devices in series with the load as final control devices for plural loads
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/4207—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells for several batteries or cells simultaneously or sequentially
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • H02J7/64—
    • H02J7/865—
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of DC power input into DC power output
    • H02M3/02—Conversion of DC power input into DC power output without intermediate conversion into AC
    • H02M3/04—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters
    • H02M3/10—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M3/125—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means
    • H02M3/135—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of DC power input into DC power output
    • H02M3/02—Conversion of DC power input into DC power output without intermediate conversion into AC
    • H02M3/04—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters
    • H02M3/10—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M3/145—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M3/155—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/156—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of DC power input into DC power output
    • H02M3/22—Conversion of DC power input into DC power output with intermediate conversion into AC
    • H02M3/24—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters
    • H02M3/28—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC
    • H02M3/325—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal
    • H02M3/335—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/33507—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters
    • H02M3/33515—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters with digital control
    • 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
    • H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J2207/20—Charging or discharging characterised by the power electronics converter
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/0083—Converters characterised by their input or output configuration
    • H02M1/0087—Converters characterised by their input or output configuration adapted for receiving as input a current source
    • 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 invention relates to the field of battery monitoring, and in particular, to a load power supply circuit and a terminal.
  • the battery operating voltage can be lower, the shutdown voltage can be as low as 2.7V, and the shutdown voltage required by the battery-powered load can be 3.3-3.5. Between V, such a battery will not be able to use the power between 2.7 ⁇ 3.3V or 2.7 ⁇ 3.5V, resulting in a waste of battery power.
  • Embodiments of the present invention provide a load power supply circuit and a terminal, which can fully utilize the battery power of the low voltage section of the battery without increasing the system load.
  • a load power supply circuit comprising a charge manager and a boost circuit, wherein:
  • the charging manager includes a first pin, a second pin and a third pin, the first pin of the charging manager is electrically connected to the load, and the second pin of the charging manager is electrically connected to the battery;
  • the boosting circuit comprises a first end, a second end and a control end, the first end of the boosting circuit is electrically connected to the load, the second end of the boosting circuit is electrically connected to the battery, the control end of the boosting circuit and the charging management
  • the third pin of the device is electrically connected;
  • the charging manager controls the circuit between the second pin of the charging manager and the first pin to be turned on, and the charging manager controls the control terminal of the boosting circuit to disconnect the boosting circuit
  • the battery supplies power to the load through the charging manager
  • the charging manager controls the charging manager The circuit between the two pins and the first pin is disconnected, the charge manager controls the control terminal of the boost circuit to turn on the boost circuit, and the battery supplies power to the load through the boost circuit; the second threshold is less than or equal to the first threshold .
  • the charging manager may be a charging management chip.
  • the electrical connections in the present invention can be understood to be direct connections or intermediate connections by other means.
  • the boosting circuit is connected outside the charging manager, when the battery voltage is higher than the first threshold, the battery voltage is in the middle and high voltage sections, and can be normally operated during the load, so the charging manager controls the boosting circuit.
  • the battery is powered by the charging manager; when the battery voltage is lower than the second threshold, the battery is in the low voltage section, and the devices in the load are not working normally, so the charging manager makes the battery no longer pass the charging manager.
  • the power is supplied to the load, and the voltage supplied by the load is boosted by the booster circuit, so that the boosted voltage can be normally operated during the load, so that the battery voltage can be fully utilized when the battery voltage is in the low voltage range.
  • the charge manager includes a logic control circuit and a switching element
  • the logic control circuit includes a first output and a second output
  • the switching element including a first end, a second end, and a control end
  • the first end of the switching element is electrically connected to the first pin of the charging manager, the second end of the switching element is electrically connected to the second pin of the charging manager, and the control end of the switching element and the first of the logic control circuit The output is electrically connected;
  • the second output end of the logic control circuit is electrically connected to the third pin of the charge manager
  • the charging manager controls the circuit between the second pin of the charging manager and the first pin to be turned on, and the charging manager controls the control terminal of the boosting circuit to disconnect the boosting circuit
  • the battery supplies power to the load through the charging manager, specifically:
  • the logic control circuit controls the control end of the switching element, the first end and the second end of the switching element are turned on, and the logic control circuit controls the boosting power At the control end of the circuit, the boost circuit is disconnected, and the battery supplies power to the load through the switching elements of the charging manager;
  • the charging manager controls the circuit between the second pin of the charging manager and the first pin to be disconnected, and the charging manager controls the control terminal of the boosting circuit to turn on the boosting circuit.
  • the battery supplies power to the load through the boosting circuit, and the second threshold is less than or equal to the first threshold, specifically:
  • the logic control circuit controls the control end of the switching element, the first end and the second end of the switching element are disconnected, the logic control circuit controls the control end of the boosting circuit, and the boosting circuit is turned on.
  • the battery supplies power to the load through a boost circuit, the second threshold being less than or equal to the first threshold.
  • the boosting circuit is connected in parallel with the switching elements in the charging manager to form a BypassBoost circuit, the switching element is a Bypass circuit, and the boosting circuit is a Boost circuit.
  • the voltage of the battery in the high voltage section may be lowered or the Bypass circuit may be provided between the battery and the load or inside the battery, and the MOS tube or the MOS tube and the inductor are usually introduced in the Bypass circuit, this application does not It is necessary to reduce the voltage of the battery in the middle and high voltage sections to supply power to the load, and utilize the existing switching elements in the charging manager as the Bypass circuit, which can not only improve the working efficiency of the load, but also avoid the inside of the battery or the battery and the load.
  • the introduction of additional MOS transistors and inductance-induced DC impedance can improve the load capacity of the battery.
  • the switching element is a metal-insulator semiconductor MOS transistor, wherein:
  • the gate of the MOS transistor is the control terminal of the switching component
  • the source of the MOS transistor is the second terminal of the switching component
  • the drain of the MOS transistor is the first terminal of the switching component.
  • the external power source when the charging manager is electrically connected to the external power source, the external power source supplies power to the load through the charging manager, and the logic control circuit controls the control end of the switching element, and the first end and the second end of the switching element are turned on.
  • the external power source charges the battery through the switching element.
  • a terminal in another aspect, includes a battery, a load, and a load power supply circuit.
  • the battery supplies power to the load through a load power supply circuit, and the load power supply circuit includes a charge manager and a boost circuit.
  • the circuit design of the load power supply circuit is as described in the first aspect, and details are not described herein again.
  • the terminal includes the above-mentioned load power supply circuit, the battery power of the low voltage section of the battery can be fully utilized, and the standby time of the terminal is prolonged.
  • the charging manager controls the boost circuit to be disconnected, so that the battery supplies power to the load through the charging manager; when the battery voltage is lower than the second threshold, the battery is in the low voltage section, and the devices in the load are not working normally, thus,
  • the charging manager makes the battery no longer supply power to the load through the charging manager, but raises the voltage of the load supply through the boosting circuit, so that the raised voltage can be used normally during the load, so that the battery voltage can be fully utilized. The amount of electricity in the segment.
  • FIG. 1 is a block diagram showing a part of a structure of a mobile phone related to an embodiment of the present invention
  • FIG. 2 is a circuit design diagram of a load power supply circuit and a battery connection
  • FIG. 3 is a circuit diagram of a load power supply circuit according to an embodiment of the present invention.
  • FIG. 4 is a circuit diagram of a load power supply circuit including an internal circuit design of a charging manager according to an embodiment of the present invention
  • FIG. 5 is a graph showing a discharge curve of a battery in a discharge state according to an embodiment of the present invention.
  • FIG. 6 is another circuit diagram including a charging manager according to an embodiment of the present invention. Circuit design diagram of the load power supply circuit
  • FIG. 7 is a circuit diagram of an internal design including a booster circuit according to an embodiment of the present invention.
  • FIG. 8 is a schematic flowchart diagram of a load power supply method according to an embodiment of the present invention.
  • FIG. 9 is a schematic diagram of true value conversion of a MOS transistor Q1 when a battery is switched between a charging state and a discharging state according to an embodiment of the present invention.
  • the embodiment of the present invention provides a load power supply circuit, which can be applied to a terminal device, such as a mobile terminal and a mobile terminal such as a Pad, for supplying power to a system load circuit in the terminal device.
  • a terminal device such as a mobile terminal and a mobile terminal such as a Pad
  • FIG. 1 is a block diagram showing a part of the structure of the mobile phone 100 related to the embodiment of the present invention.
  • the mobile phone 100 includes a radio frequency (RF) circuit 110, a power source 120, a processor 130, a memory 140, an input unit 150, a display unit 160, a sensor 170, an audio circuit 180, and a wireless fidelity. , WiFi) module 190 and other components.
  • RF radio frequency
  • the structure of the handset shown in FIG. 1 does not constitute a limitation to the handset, and may include more or less components than those illustrated, or some components may be combined, or different components may be arranged.
  • the components of the mobile phone 100 will be specifically described below with reference to FIG. 1 :
  • the RF circuit 110 can be used for transmitting and receiving information or during a call, and receiving and transmitting the signal. Specifically, after receiving the downlink information of the base station, the processor 130 processes the data. In addition, the uplink data is designed to be sent to the base station.
  • RF circuits include, but are not limited to, an antenna, at least one amplifier, a transceiver, a coupler, and a low noise amplifier (Low Noise) Amplifier, LNA), duplexer, etc.
  • 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 Global System of Mobile communication (GSM), General Packet Radio Service (GPRS), Code Division Multiple Access (Code). Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), Long Term Evolution (LTE), E-mail, Short Messaging Service (SMS), etc.
  • GSM Global System of Mobile communication
  • GPRS General Packet Radio Service
  • CDMA Code
  • the memory 140 can be used to store software programs and modules, and the processor 130 executes various functional applications and data processing of the mobile phone 100 by running software programs and modules stored in the memory 140.
  • the memory 140 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. Data created according to the use of the mobile phone 100 (such as audio data, phone book, etc.).
  • memory 140 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 input unit 150 can be configured to receive input numeric or character information and to generate key signal inputs related to user settings and function control of the handset 100.
  • the input unit 150 may include a touch panel 151 and other input devices 152.
  • the touch panel 151 also referred to as a touch screen, can collect touch operations on or near the user (such as the user using a finger, a stylus, or the like on the touch panel 151 or near the touch panel 151. Operation), and drive the corresponding connecting device according to a preset program.
  • the touch panel 151 may include two parts: a touch detection device and a touch controller.
  • the touch detection device detects the touch orientation of the user, and detects a signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, converts the touch information into contact coordinates, and sends the touch information.
  • the processor 130 is provided and can receive commands from the processor 130 and execute them.
  • the touch panel 151 can be implemented in various types such as resistive, capacitive, infrared, and surface acoustic waves.
  • the input unit 150 may also include other input devices 152.
  • other input devices 152 may include, but are not limited to, one or more of a physical keyboard, function keys (such as volume control buttons, switch buttons, etc.), trackballs, mice, joysticks, and the like.
  • the display unit 160 can be used to display information input by the user or information provided to the user and various menus of the mobile phone 100.
  • the display unit 160 may include a display panel 161.
  • the display panel 161 may be configured in the form of an LCD, an OLED, or the like.
  • the touch panel 151 can cover the display panel 161. When the touch panel 151 detects a touch operation on or near the touch panel 151, the touch panel 151 transmits to the processor 130 to determine the type of the touch event, and then the processor 130 according to the touch event. The type provides a corresponding visual output on display panel 161.
  • the touch panel 151 and the display panel 151 are two independent components to implement the input and input functions of the mobile phone 100 in FIG. 1, in some embodiments, the touch panel 151 may be integrated with the display panel 161. The input and output functions of the mobile phone 100 are implemented.
  • the handset 100 can also include at least one type of sensor 170, 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 161 according to the brightness of the ambient light, and the proximity sensor may close the display panel 161 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 180, the speaker 181, and the microphone 182 can provide an audio interface between the user and the handset 100.
  • the audio circuit 180 can transmit the converted electrical data of the received audio data to the speaker 181 for conversion to the sound signal output by the speaker 181; on the other hand, the microphone 182 converts the collected sound signal into an electrical signal by the audio circuit.
  • the 180 is converted to audio data after reception, and then outputted to the RF circuit 110 for transmission to, for example, another mobile phone, or the audio data is output to the memory 140 for further processing.
  • WiFi is a short-range wireless transmission technology
  • the mobile phone 100 can help users to send and receive emails, browse web pages, and access streaming media through the WiFi module 190, which provides wireless broadband Internet access for users.
  • FIG. 1 shows the WiFi module 190, it can be understood that it does not belong to the essential configuration of the mobile phone 100, and may be omitted as needed within the scope of not changing the essence of the invention.
  • the processor 130 is the control center of the handset 100, which connects various portions of the entire handset using various interfaces and lines, by running or executing software programs and/or modules stored in the memory 140, and recalling data stored in the memory 140, The various functions and processing data of the mobile phone 100 are executed, thereby realizing various services based on the mobile phone.
  • the processor 130 may include one or more processing units; preferably, the processor 130 may integrate an application processor and a modem processor, where the application processor mainly processes an operating system, a user interface, an application, and the like.
  • the modem processor primarily handles wireless communications. It can be understood that the above modem processor may not be integrated into the processor 130.
  • the mobile phone 100 also includes a power source 120 (such as a battery) that supplies power to the various components.
  • a power source 120 such as a battery
  • the power source can be logically coupled to the processor 130 via a load power supply circuit to manage functions such as charging, discharging, and power consumption through the load power supply circuit.
  • the mobile phone 100 may further include a camera, a Bluetooth module, and the like, and details are not described herein.
  • the load power supply circuit may include a charge manager including an analog-to-digital converter (ADC) module, a logic control circuit, and A switching controller or the like is used to control charging and discharging of the battery in the terminal.
  • ADC analog-to-digital converter
  • the charging manager is used to control the external power source to charge the battery; when the terminal is discharged, the battery is powered by the charging management chip.
  • the ADC module can collect the voltage of the battery during charging and discharging and transmit it to the logic control circuit, so that the logic control module controls the battery. Charging process to prevent battery short circuit, insufficient charging and over charging.
  • the terminal when the terminal is in a charging state, its charging path is: the power supply current of the external power source enters the charging manager through the VBUS pin, and supplies power to the load via the SW pin and the inductor output to the VSYS terminal. Since the VSYS terminal is also connected to the SYS pin of the charge manager, the SYS pin is connected to the BAT pin through the switching element, and the BAT pin is connected to the battery, so the current flowing through the VSYS terminal from the external power source is shunted to the battery through the charge manager.
  • the discharge path of the battery is: the discharge current of the battery is passed from the BAT pin of the charging manager to the SYS pin through the switching element, and then the load is supplied from the SYS pin to the VSYS terminal.
  • the switching element is bi-directional, and in general, both the charging state and the discharging state of the battery are in a normally open state.
  • the invention is used to realize the improvement of the load power supply circuit, so as to fully utilize the low-voltage power of the battery without increasing the system load.
  • FIG. 3 is a circuit diagram of a load power supply circuit according to an embodiment of the present invention, which is an improvement of the load power supply circuit shown in the charging manager of FIG. 2.
  • the load power supply circuit includes a charge manager 3 and a boost circuit 4, and the charge manager 3 includes a first pin SYS, a second pin BAT, and a third pin C, and the charge manager 3 A pin SYS is electrically connected to the load 5, and the second pin BAT of the charging manager 3 is electrically connected to the battery 6;
  • the boosting circuit 4 includes a first end a, a second end b, and a control end c.
  • the first end a of the boosting circuit 4 is electrically connected to the load 5, and the second end b of the boosting circuit 4 Electrically connected to the battery 6, the control terminal c of the boosting circuit 4 is electrically connected to the third pin C of the charging manager 3;
  • the charging manager 3 controls the circuit between the second pin BAT of the charging manager 3 and the first pin SYS to be turned on, the charging manager 3 controlling the control terminal c of the boosting circuit 4 to disconnect the boosting circuit 4, and the battery 6 supplies power to the load 5 through the charging manager 3;
  • the charging manager 3 controls the circuit between the second pin BAT of the charging manager 3 and the first pin SYS to be disconnected, the charging manager 3 controlling the control terminal c of the boosting circuit 4 to turn on the boosting circuit 4, and the battery 6 supplies power to the load 5 through the boosting circuit 4; the second threshold is less than or equal to the The first threshold.
  • the charging manager 3 may be a charging management chip, such as a charging management chip of the model BQ25892 produced by Texas Instruments, and a charging management chip of the model HI6521V200 produced by Huawei HiSilicon.
  • the electrical connections in the present invention can be understood to be direct connections or intermediate connections by other means.
  • the booster circuit 4 is connected outside the charging manager 3, when the voltage of the battery 6 is higher than the first threshold, for example, the first threshold is 3.4V, it can be understood that the voltage of the battery 6 is in the middle and high voltage sections, and The devices for the load 5 are all working normally, so the charge manager 3 controls the boost circuit 4 to be disconnected, so that the battery 6 supplies power to the load through the charge manager 3; when the battery 6 voltage is lower than the second threshold, for example, the second threshold Less than or equal to 3.4V, it can be understood that the battery 6 voltage is in the low voltage section, and the devices in the load 5 cannot be normally operated, so the charging manager 3 causes the battery to no longer supply power to the load 5 through the charging manager 3, but through the rise.
  • the voltage circuit 4 is raised to the voltage supplied by the load 5, so that the raised voltage can be used for the devices in the load 5 to operate normally. In this way, the amount of power when the battery voltage is in the low voltage range can be fully utilized.
  • FIG. 4 is a circuit design diagram of a load power supply circuit including an internal circuit design of the charging manager 3 according to an embodiment of the present invention, and FIG. 4 may be a specific implementation manner of FIG. 3.
  • the charging manager 3 may include a logic control circuit 31 and a switching element 32.
  • the logic control circuit 31 includes a first output C1 and a second output C2.
  • the switching element 32 includes a first end d, a second end f, and a control end e. ,among them:
  • the first end d of the switching element 32 is electrically connected to the first pin SYS of the charging manager 3, and the second end f of the switching element 32 is electrically connected to the second pin BAT of the charging manager 3, and the switching element 32
  • the control end is electrically connected to the first output end C1 of the logic control circuit 31;
  • the second output C2 of the logic control circuit 31 is electrically connected to the third pin C of the charging manager 3;
  • the charging manager 3 controls the circuit between the second pin BAT of the charging manager 3 and the first pin SYS to be turned on, and the charging manager 3 controls the boosting circuit 4
  • the control terminal c disconnects the boosting circuit 4, and the battery 6 supplies power to the load 5 through the charging manager 3, which may be:
  • the logic control circuit 31 controls the control terminal e of the switching element 32, the first end d and the second terminal f of the switching element 32 are turned on, and the logic control circuit 31 controls the boosting circuit 4
  • the control terminal c, the boosting circuit 4 is disconnected, and the battery 6 supplies power to the load 5 through the switching element 32 of the charging manager 3;
  • the charging manager 3 controls the circuit between the second pin BAT of the charging manager and the first pin SYS to be disconnected, and the charging manager 3 controls the boosting circuit 4
  • the control terminal c causes the boosting circuit 4 to conduct the power supply to the load 5 through the boosting circuit 4, and the second threshold is less than or equal to the first threshold.
  • the logic control circuit 31 controls the control terminal e of the switching element 32, the first end d and the second terminal f of the switching element 32 are disconnected, and the logic control circuit 31 controls the boosting circuit 4
  • the control terminal c, the boosting circuit 4 is turned on, and the battery 6 supplies power to the load 5 through the boosting circuit 4, and the second threshold is less than or equal to the first threshold.
  • the logic control circuit 31 may further include an input terminal g, and the logic control circuit 31 acquires the voltage of the battery 6 through the input terminal g, as shown in FIG.
  • the charging manager 3 further includes an analog-to-digital converter (ADC) module, and the ADC module is electrically connected to the battery 6 through the D pin of the charging manager 3 for collecting the battery.
  • ADC analog-to-digital converter
  • the voltage of 6 is supplied to the logic control circuit 31 so that the logic control circuit 31 controls the switching of the switching element 32 and the boosting circuit 4 in accordance with the collected battery voltage.
  • the boosting circuit 4 is connected in parallel with the switching element 32 in the charging manager 3,
  • the BypassBoost circuit is formed, the switching element 32 is a Bypass circuit, and the boosting circuit 4 is a Boost circuit.
  • the BypassBoost circuit refers to a circuit that has two functions: Bypass and Boost states.
  • the load power supply circuit of the present application when the voltage of the battery 6 is higher than the set minimum voltage, that is, the first threshold, for example, 3.4 V, the load power supply circuit is in the Bypass state, that is, the battery 6 is turned on by the switching element 32. 5 power supply, at this time the boost circuit 4 is not conducting, and the Boost circuit is in an off state.
  • the load power supply circuit When the voltage of the battery 6 is lower than or equal to the set output minimum voltage, that is, the second threshold, the load power supply circuit is in the Boost state, and the boosting is required to raise the output voltage of the load power supply circuit to the set output minimum voltage to make the load
  • the devices in 5 are all working normally. At this time, the switching element 32 is not turned on, and the Bypass circuit is in an off state.
  • FIG. 5 is a discharge graph of the battery 6 in a discharge state according to an embodiment of the present invention, and is illustrated by the circuit design of FIG. 4.
  • the X axis in FIG. 5 represents the discharge time of the battery 6,
  • the Y axis represents the output voltage VSYS of the load power supply circuit,
  • the Y1 axis represents the current of the battery 6,
  • the battery 6 has sufficient power, and the voltage is in the medium and high voltage range, for example, 4.2 to 3.4.
  • V is between V
  • the battery 6 can supply power to the load 5 through the switching element 32, that is, the Bypass circuit.
  • the voltage of the battery 6 is the output voltage VSYS of the load power supply circuit, and the current of the battery 6 does not change, for example, 300 mA.
  • the battery 6 When the battery 6 is in the low voltage section, for example, lower than or equal to 3.4V to reach the shutdown voltage of the load, in order to make the devices in the load 5 work normally, the battery 6 can be boosted by the boost circuit 4, that is, the boost circuit to increase the output of the load power supply circuit.
  • the voltage VSYS for example, is boosted to 3.4V, and power is normally supplied to the load 5 until the battery 6 is depleted.
  • the battery protection voltage of the battery 6 is 2.7V, that is, the battery is turned off when the battery voltage is lower than 2.7V, so that between the shutdown voltage of the battery 6 of 2.7V and the shutdown voltage of the load of 3.4V, the battery of the battery 6 in the low voltage section can be made.
  • the power is fully utilized.
  • the voltage of the battery in the high voltage section may be lowered or the Bypass circuit may be provided between the battery and the load or inside the battery, and the MOS tube or the MOS tube and the inductor are usually introduced in the Bypass circuit.
  • the application does not need to reduce the voltage of the battery in the middle and high voltage sections to supply power to the load, and utilizes the charging manager.
  • the existing switching element can not only improve the working efficiency of the load, but also avoid the introduction of additional MOS tube and inductance DC impedance between the battery or the battery and the load, which can improve the load capacity of the battery.
  • FIG. 6 is a circuit design diagram of another load power supply circuit including the internal circuit design of the charge manager 3.
  • the circuit design of FIG. 6 may be an implementation of FIG. 3 or FIG.
  • the switching element 32 inside the charging manager 3 may be a MOS transistor or a combined connection of a MOS transistor and a diode.
  • the switching element 32 as a MOS transistor as an example, as shown in FIG. 6, the gate G of the MOS transistor Q1 is the control terminal e of the switching element 32, and the source S of the MOS transistor Q1 is the second terminal f of the switching element 32, MOS.
  • the drain D of the tube Q1 is the first end d of the switching element 32.
  • the logic control circuit 31 controls the gate G of the MOS transistor Q1, the source S and the drain D of the MOS transistor Q1 are turned on, and the logic control circuit 31 controls the boost.
  • the control terminal c of the circuit 4 the boosting circuit 4 is disconnected, the battery 6 supplies power to the load 5 through the MOS transistor Q1 of the charging manager 3; when the voltage of the battery 6 is lower than the second threshold, the logic control circuit 31 controls the MOS transistor Q1.
  • the gate G, the source S and the drain D of the MOS transistor Q1 are turned off, the logic control circuit 31 controls the control terminal c of the boosting circuit 4, the boosting circuit 4 is turned on, and the battery 6 supplies power to the load 5 through the boosting circuit 4. .
  • the external power source supplies power to the load 5 through the charging manager 3, and the logic control circuit 31 controls the control terminal c of the switching element 32.
  • the first end d and the second end of the switching element 32 f is turned on, and the external power source charges the battery through the switching element 32.
  • the charging manager 3 when the charging manager 3 is electrically connected to the external power source, and the battery 6 voltage is higher than the third threshold, the external power source supplies power to the load through the charging manager 3, and the logic control circuit 31 can control the control terminal e of the switching element 32 to make the switch
  • the first end d and the second end f of the element 32 are disconnected, and the third threshold is greater than the first threshold.
  • the first threshold is 3.6V
  • the third threshold is 4.2V.
  • the charging manager 3 and the boosting circuit 4 may be integrated in the same circuit chip or may not be integrated in the same circuit chip.
  • FIG. 7 is a circuit diagram of an internal design including a booster circuit 4 according to an embodiment of the present invention.
  • the boosting circuit 4 in FIG. 7 may be an implementation of the boosting circuit in FIG. 3 or FIG. 4 or FIG. 6 , and may be implemented in various manners, which is not limited in this application.
  • the boosting circuit 4 includes a logic control circuit 41, a MOS transistor Q2, a MOS transistor Q3, an inductor L2, and a capacitor C3.
  • the first end c of the logic control circuit 41 is connected to the C2 terminal of the logic control circuit 31.
  • the second terminal h is connected to the gate of the MOS transistor Q2, the third terminal i is connected to the gate of the MOS transistor Q3, the drain of the MOS transistor Q3 is connected to the first terminal m of the capacitor C3, and the source of the MOS transistor Q3 is
  • the first end k of the inductor L2 is connected, the drain of the MOS transistor Q2 is connected to the first end k of the inductor L2, the second end l of the inductor L2 is connected to the battery, and the second end n of the capacitor C3 is connected to the output of the load power supply circuit. VSYS connection.
  • the load power supply circuit provided by the present invention can utilize the charge manager and the boost circuit to make full use of the power of the low voltage section of the battery. Further, the existing switching element and the boosting circuit in the charging manager are connected in parallel to form a BypassBoost circuit, which can fully utilize the power of the low voltage section of the battery without increasing the system load.
  • the invention also provides a terminal comprising a battery, a load and a load power supply circuit, wherein the battery supplies power to the load through the load power supply circuit, the load power supply circuit comprises a charge manager and a boost circuit, and the circuit implementation manner of the load power supply circuit can be Refer to the description of FIG. 2 to FIG. 7 above, and details are not described herein again.
  • the terminal includes the above-mentioned load power supply circuit, the battery power of the low voltage section of the battery can be fully utilized, and the standby time of the terminal is prolonged.
  • FIG. 8 is a schematic flowchart of a load power supply method according to an embodiment of the present disclosure. The method may be applied to any one of the load power supply circuits provided by the foregoing, and the method includes:
  • the logic control circuit in the charge manager can detect the voltage of the battery in the load supply circuit in real time.
  • the charging manager controls the circuit between the second pin BAT of the charging manager and the first pin SYS, for example, the second pin BAT and A switching element is included between the first pins SYS, and the switching element is turned on.
  • the charging manager controls the boosting circuit to be turned off, so that the battery supplies power to the load through the charging manager.
  • the logic control circuit 31 in the charging manager controls the MOS transistor Q1 to be turned on, and the MOS transistor Q1 is equivalent to the electronic switch, so that the battery supplies power to the load through the MOS transistor Q1, and
  • the booster circuit is controlled to be non-conductive by the logic control circuit 31.
  • the second threshold may be 3.4V, that is, the low voltage section of the battery voltage.
  • the logic control circuit controls the MOS transistor Q1 to be turned off, and the logic control circuit controls the boost circuit. Turning on, the battery is boosted by the booster circuit to boost the output voltage of the load supply circuit.
  • the boost circuit and the MOS transistor Q1 in the charge manager form a BypassBoost circuit, which can dynamically switch to the load according to the voltage of the battery, and the switching conditions and timing are controlled by the logic control circuit in the charge manager.
  • the logic control circuit 31 in the charging manager may perform hardware or software program setting in advance, so that the logic control circuit 31 detects the voltage of the battery according to the voltage of the battery and the first The threshold is compared with the second threshold, and the switching battery supplies power to the load through the boost circuit or the MOS transistor Q1.
  • Table 1 The logical truth table of the logic control circuit 31 in the charging manager and the corresponding description are shown in Table 1 below.
  • C1 represents the switching control signal of the MOS transistor Q1
  • C2 represents the switching control signal of the boosting circuit.
  • the C1 logic true value is set to 1
  • the MOS transistor Q1 in the charging manager is instructed to be turned on, and when the C1 logical true value is set to 0, the MOS is indicated. Tube Q1 is cut off. Therefore, when the logic control circuit 31 in the charge manager detects that the battery voltage is in the medium-high voltage section, the logical true value of C1 of the logic control circuit 31 in the charge manager is set to 1, and the logical true value of C2 is set to 0. .
  • the boost circuit is turned on, and when the C2 logic true value is set to 0, the boost circuit is turned off. Therefore, when the logic control circuit 31 in the charge manager detects that the battery voltage is in the low voltage range, the logical true value of C1 of the logic control circuit in the charge manager is set to 0, and the logical true value of C2 is set to 1.
  • the MOS tube Q1 in the charging manager needs to be turned on, the logical true value of C1 is x, the logical true value of C2 is 0, the current is supplied to the load through the VBUS pin and the SW pin and the inductor, part of The current is charged through the SYS pin of the charge manager and the turned-on MOS transistor Q1 and through the BAT pin, and the logical true value x of C1 changes as the voltage of the battery is charged.
  • FIG. 9 is a schematic diagram showing the true value conversion of the MOS transistor Q1 when the battery is switched between the charged state and the discharged state.
  • the C1 logic true value is 1
  • the MOS transistor Q1 is turned on
  • the C2 logic true value is 0,
  • the boost circuit is turned off, and as the battery power is consumed.
  • the boost circuit needs to be turned on, the MOS transistor Q1 is turned off, the C1 logic true value is 0, the C2 logic true value is 1; if the battery is discharged and the voltage is medium and high voltage state, the charging is detected.
  • the C1 logic true value is x
  • the MOS transistor Q1 is turned on
  • the C2 logic true value is 0,
  • the boosting circuit is turned off; otherwise, if the battery is in the charging state, the charging device is detected to be pulled out.
  • the boost circuit is turned off; if the battery is discharged and the battery voltage is in a low voltage state, it is detected that the charging device is inserted into the terminal, that is, it is switched to the charging state, then the C1 logic true value For x, the MOS transistor Q1 is turned on, the C2 logic true value is 0, and the boost circuit is turned off; conversely, if the charging device is detected to be pulled out while the battery is in the charging state, and the battery voltage is in a low voltage state, the boost circuit needs to be turned on. The MOS transistor Q1 is turned off, the C1 logic true value is 0, and the C2 logic true value is 1.
  • the logic control circuit 41 in the booster circuit controls the grounding.
  • the MOS transistor Q2 is turned on, and the other MOS transistor Q3 is turned off.
  • the logic control circuit 41 controls the MOS transistor Q2 to be turned off, the MOS transistor Q3 is turned on, and the inductor is stored.
  • the logic control circuit 41 dynamically adjusts the boosting circuit according to the battery voltage and the output voltage to ensure that the output voltage is stabilized at the set target voltage.
  • the load is supplied by the charging manager in the high voltage section of the battery, and the boosting circuit is passed in the low voltage section of the battery. Raise the output voltage of the load power supply circuit to supply power to the load, so that the power of the low-voltage section of the battery can be fully utilized.
  • the BypassBoost circuit is formed by using a switching element such as a MOS tube and a boosting circuit in the charging manager, the battery is powered by the Bypass MOS tube during the high voltage section of the battery, and is raised when the battery is in the low voltage section.
  • the voltage circuit supplies power to the load, which may lower the battery voltage in the high voltage section of the battery in the prior art, or the Bypass circuit is disposed in the circuit inside the battery or between the battery and the load, since the Bypass circuit is usually a MOS tube or an inductor.
  • the impedance will be generated, which will reduce the working efficiency of the system and lead to the reduction of the battery load capacity.
  • This application can utilize the existing switching components in the charging manager as the Bypass circuit, which can improve the working efficiency of the system and thereby improve the load capacity of the battery.
  • the area of the battery protection board can be reduced, and the risk of heat generation of the battery protection board can be reduced.
  • All or part of the steps of implementing the foregoing method embodiments may be performed by hardware related to the program instructions.
  • the foregoing program may be stored in a computer readable storage medium, and when executed, the program includes the steps of the foregoing method embodiments;
  • 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, which can store program codes. medium.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Secondary Cells (AREA)

Abstract

一种负载供电电路和终端，涉及电池监控领域，能够在不增加系统负荷的情况下，充分利用电池低压段的电池电量。该负载供电电路包括充电管理器（3）和升压电路（4）。充电管理器包括第一引脚（SYS）、第二引脚（BAT）和第三引脚（C），充电管理器的第一引脚与负载（5）电性连接，充电管理器的第二引脚与电池（6）电性连接。升压电路包括第一端（a）、第二端（b）和控制端（c），升压电路的第一端与负载电性连接，升压电路的第二端与电池电性连接，升压电路的控制端与充电管理器的第三引脚电性连接。

Description

一种负载供电电路和终端 技术领域
本发明涉及电池监控领域，尤其涉及一种负载供电电路和终端。
背景技术
移动通信终端设计中，随着电池技术的进步，在新材料电池应用之后，电池工作电压可以更低，其关机电压可以低至2.7V，而电池供电的负载要求的关机电压可以在3.3～3.5V之间，这样电池在2.7～3.3V或2.7～3.5V之间的电量将无法利用，导致电池电量的浪费。
发明内容
本发明实施例提供一种负载供电电路和终端，能够在不增加系统负荷的情况下，充分利用电池低压段的电池电量。
第一方面，提供一种负载供电电路，负载供电电路包括充电管理器和升压电路，其中：
充电管理器包括第一引脚、第二引脚和第三引脚，充电管理器的第一引脚与负载电性连接，充电管理器的第二引脚与电池电性连接；
升压电路包括第一端、第二端和控制端，升压电路的第一端与负载电性连接，升压电路的第二端与电池电性连接，升压电路的控制端与充电管理器的第三引脚电性连接；
其中：
当电池电压高于第一阈值时，充电管理器控制充电管理器的第二引脚和第一引脚之间的电路导通，充电管理器控制升压电路的控制端使升压电路断开，电池通过充电管理器给负载供电；
当电池电压低于第二阈值时，充电管理器控制充电管理器的第 二引脚和第一引脚之间的电路断开，充电管理器控制升压电路的控制端使升压电路导通，电池通过升压电路给负载供电；第二阈值小于或等于第一阈值。
其中，充电管理器可以是充电管理芯片。本发明中的电性连接可以理解为直接连接，也可以中间通过其它器件连接。
由此，由于充电管理器外连接有升压电路，当电池电压高于第一阈值时，电池电压处于中高压段，可以供负载中的期间均正常工作，于是充电管理器控制升压电路断开，使得电池通过充电管理器为负载供电；当电池电压低于第二阈值时，电池处于低压段，不能供负载中的器件均正常工作，于是，充电管理器使得电池不再通过充电管理器为负载供电，而是通过升压电路抬升负载供电的电压，使得抬升后的电压可供负载中的期间均正常工作，这样可以充分利用电池电压处于低压段时的电量。
在一种可能的设计中，充电管理器包括逻辑控制电路和开关元件，逻辑控制电路包括第一输出端和第二输出端，开关元件包括第一端、第二端和控制端，其中：
开关元件的第一端与充电管理器的第一引脚电性连接，开关元件的第二端与充电管理器的第二引脚电性连接，开关元件的控制端与逻辑控制电路的第一输出端电性连接；
逻辑控制电路的第二输出端与充电管理器的第三引脚电性连接；
其中：
当电池电压高于第一阈值时，充电管理器控制充电管理器的第二引脚和第一引脚之间的电路导通，充电管理器控制升压电路的控制端使升压电路断开，电池通过充电管理器给负载供电，具体为：
当电池电压高于第一阈值时，逻辑控制电路控制开关元件的控制端，开关元件的第一端和第二端导通，逻辑控制电路控制升压电 路的控制端，升压电路断开，电池通过充电管理器的开关元件给负载供电；
当电池电压低于第二阈值时，充电管理器控制充电管理器的第二引脚和第一引脚之间的电路断开，充电管理器控制升压电路的控制端使升压电路导通，电池通过升压电路给负载供电，第二阈值小于或等于第一阈值，具体为：
当电池电压低于第二阈值时，逻辑控制电路控制开关元件的控制端，开关元件的第一端和第二端断开，逻辑控制电路控制升压电路的控制端，升压电路导通，电池通过升压电路给负载供电，第二阈值小于或等于第一阈值。
由此，升压电路与充电管理器中的开关元件并联连接，可组成BypassBoost电路，开关元件为Bypass电路，升压电路为Boost电路。相比于现有技术可能会降低电池在高压段时的电压或者提供的Bypass电路在电池与负载之间或者在电池内部，且Bypass电路中通常会引入MOS管或MOS管和电感，本申请不需要降低电池在中高压段的电压为负载供电，且是利用了充电管理器中的已有的开关元件作为Bypass电路，不仅可以提升负载的工作效率，也可以避免在电池内部或电池与负载之间引入额外的MOS管和电感导致的直流阻抗，可以提升电池的带载能力。
在一种可能的设计中，开关元件为金属绝缘体半导体MOS管，其中：
MOS管的栅极为开关元件的控制端，MOS管的源极为开关元件的第二端，MOS管的漏极为开关元件的第一端。
在一种可能的设计中，充电管理器电性连接外部电源时，外部电源通过充电管理器向负载供电，逻辑控制电路控制开关元件的控制端，开关元件的第一端和第二端导通，外部电源通过开关元件向电池充电。
又一方面，提供一种终端，终端包括电池、负载以及负载供电电路，电池通过负载供电电路向负载进行供电，负载供电电路包括充电管理器和升压电路。
负载供电电路的电路设计如第一方面所述，此处不再赘述。
由此，该终端在包括上述的负载供电电路时，可充分利用电池低压段的电池电量，使得终端的待机时间延长。
因此，本发明实施例提供的负载供电电路和终端，由于充电管理器外连接有升压电路，当电池电压高于第一阈值时，电池电压处于中高压段，可以供负载中的期间均正常工作，于是充电管理器控制升压电路断开，使得电池通过充电管理器为负载供电；当电池电压低于第二阈值时，电池处于低压段，不能供负载中的器件均正常工作，于是，充电管理器使得电池不再通过充电管理器为负载供电，而是通过升压电路抬升负载供电的电压，使得抬升后的电压可供负载中的期间均正常工作，这样可以充分利用电池电压处于低压段时的电量。
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为一种与本发明实施例相关的手机的部分结构的框图；
图2为一种负载供电电路和电池连接的电路设计图；
图3为本发明实施例提供的一种负载供电电路的电路设计图；
图4为本发明实施例提供的一种包括充电管理器内部电路设计的负载供电电路的电路设计图；
图5为本发明实施例中的电池处于放电状态时的放电曲线图；
图6为本发明实施例提供的另一种包括充电管理器内部电路设 计的负载供电电路的电路设计图；
图7为本发明实施例提供的一种包括升压电路内部设计的电路设计图；
图8为本发明实施例提供的一种负载供电方法的流程示意图；
图9为本发明实施例提供的一种电池在充电状态和放电状态间转换时MOS管Q1的真值转换示意图。
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，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
本发明实施例提供一种负载供电电路，可应用于终端设备中，该终端设备例如可以为手机和Pad等移动终端，用于为终端设备中的系统负载电路供电。
以终端设备为手机为例，图1示出的是与本发明实施例相关的手机100的部分结构的框图。参考图1，手机100包括：射频(Radio Frequency，RF)电路110、电源120、处理器130、存储器140、输入单元150、显示单元160、传感器170、音频电路180、以及无线保真(Wireless Fidelity，WiFi)模块190等部件。本领域技术人员可以理解，图1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，或者不同的部件布置。
下面结合图1对手机100的各个构成部件进行具体的介绍：
RF电路110可用于收发信息或通话过程中，信号的接收和发送，特别地，将基站的下行信息接收后，给处理器130处理；另外，将设计上行的数据发送给基站。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、低噪声放大器(Low Noise  Amplifier，LNA)、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，包括但不限于全球移动通讯系统(Global System of Mobile communication，GSM)、通用分组无线服务(General Packet Radio Service，GPRS)、码分多址(Code Division Multiple Access，CDMA)、宽带码分多址(Wideband Code Division Multiple Access，WCDMA)、长期演进(Long Term Evolution，LTE)、电子邮件、短消息服务(Short Messaging Service，SMS)等。
存储器140可用于存储软件程序以及模块，处理器130通过运行存储在存储器140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140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、图象播放功能等)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140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。
输入单元150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，输入单元150可包括触控面板151以及其他输入设备152。触控面板151，也称为触摸屏，可收集用户在其上或附近的触摸操作(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151上或在触控面板151附近的操作)，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151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，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，并将它转换成触点坐标，再送给处理器130，并能接收处理器130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151。 除了触控面板151，输入单元150还可以包括其他输入设备152。具体地，其他输入设备152可以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、操作杆等中的一种或多种。
显示单元160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。显示单元160可包括显示面板161，可选的，可以采用LCD、OLED等形式来配置显示面板161。进一步的，触控面板151可覆盖显示面板161，当触控面板151检测到在其上或附近的触摸操作后，传送给处理器130以确定触摸事件的类型，随后处理器130根据触摸事件的类型在显示面板161上提供相应的视觉输出。虽然在图1中，触控面板151与显示面板151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151与显示面板161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170，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161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161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180、扬声器181，麦克风182可提供用户与手机100之间的音频接口。音频电路180可将接收到的音频数据转换后的电信号，传输到扬声器181，由扬声器181转换为声音信号输出；另一方面，麦克风182将收集的声音信号转换为电信号，由音频电路 180接收后转换为音频数据，再将音频数据输出至RF电路110以发送给比如另一手机，或者将音频数据输出至存储器140以便进一步处理。
WiFi属于短距离无线传输技术，手机100通过WiFi模块190可以帮助用户收发电子邮件、浏览网页和访问流式媒体等，它为用户提供了无线的宽带互联网访问。虽然图1示出了WiFi模块190，但是可以理解的是，其并不属于手机100的必须构成，完全可以根据需要在不改变发明的本质的范围内而省略。
处理器130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140内的软件程序和/或模块，以及调用存储在存储器140内的数据，执行手机100的各种功能和处理数据，从而实现基于手机的多种业务。可选的，处理器130可包括一个或多个处理单元；优选的，处理器130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130中。
手机100还包括给各个部件供电的电源120(比如电池)，优选的，电源可以通过负载供电电路与处理器130逻辑相连，从而通过负载供电电路实现管理充电、放电、以及功耗等功能。
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2为一种负载供电电路和电池连接的电路设计图，负载供电电路可以包括充电管理器，该充电管理器包括模数变换器(Analog-to-Digital Converter，ADC)模块、逻辑控制电路和开关元件等，充电管理器用于控制终端中电池的充放电。当终端充电时，充电管理器用于控制外部电源向电池充电；当终端放电时，电池经过充电管理芯片为负载供电。其中的ADC模块可采集充放电过程中电池的电压并传输给逻辑控制电路，使得逻辑控制模块控制电池的 充电过程，防止电池短路、充电不足和过度充电等。
具体地，当终端处于充电状态时，其充电通路为：外部电源的供电电流通过VBUS引脚进入充电管理器，并经由SW引脚和电感输出至VSYS端为负载供电。由于VSYS端也与充电管理器的SYS引脚连接，SYS引脚经过开关元件连接至BAT引脚，BAT引脚连接电池，因此外部电源流经VSYS端的电流将经过充电管理器分流至电池，从而为电池充电；当终端处于放电状态时，电池的放电通路为：电池的放电电流由充电管理器的BAT引脚经过开关元件至SYS引脚，再由SYS引脚至VSYS端为负载供电。可见，开关元件是双向导通的，一般情况下，在电池的充电状态和放电状态均处于常开状态。
本发明用于实现对负载供电电路的改进，以达到在不增加系统负荷的情况下，充分利用电池低压段电量的效果。
图3为本发明实施例提供的一种负载供电电路的电路设计图，是对图2充电管理器所示的负载供电电路的改进。图3所示电路中，负载供电电路包括充电管理器3和升压电路4，充电管理器3包括第一引脚SYS、第二引脚BAT和第三引脚C，充电管理器3的第一引脚SYS与负载5电性连接，充电管理器3的第二引脚BAT与电池6电性连接；
升压电路4包括第一端a、第二端b和控制端c，所述升压电路4的第一端a与所述负载5电性连接，所述升压电路4的第二端b与所述电池6电性连接，所述升压电路4的控制端c与所述充电管理器3的第三引脚C电性连接；
其中：
当所述电池6电压高于第一阈值时，所述充电管理器3控制所述充电管理器3的第二引脚BAT和第一引脚SYS之间的电路导通，所述充电管理器3控制所述升压电路4的控制端c使所述升压电路4断开，所述电池6通过所述充电管理器3给所述负载5供电；
当所述电池6电压低于第二阈值时，所述充电管理器3控制所述充电管理器3的第二引脚BAT和第一引脚SYS之间的电路断开，所述充电管理器3控制所述升压电路4的控制端c使所述升压电路4导通，所述电池6通过所述升压电路4给所述负载5供电；所述第二阈值小于或等于所述第一阈值。
其中，充电管理器3可以是充电管理芯片，例如德州仪器生产的型号为BQ25892的充电管理芯片，和华为海思生产的型号为HI6521V200的充电管理芯片。本发明中的电性连接可以理解为直接连接，也可以中间通过其他器件连接。
可以看出，由于在充电管理器3外连接有升压电路4，当电池6电压高于第一阈值时，例如第一阈值为3.4V时，可以理解为电池6电压处于中高压段，可以供负载5中的器件均正常工作，于是充电管理器3控制升压电路4断开，使得电池6通过充电管理器3为负载供电；当电池6电压低于第二阈值时，例如第二阈值小于或等于3.4V，可以理解为电池6电压处于低压段，不能供负载5中的器件均正常工作，于是充电管理器3使得电池不再通过充电管理器3为负载5供电，而是通过升压电路4抬升为负载5供电的电压，使得抬升后的电压可供负载5中的器件均正常工作。这样，可以充分利用电池电压处于低压段时的电量。
进一步的，图4为本发明实施例提供的一种包括充电管理器3内部电路设计的负载供电电路的电路设计图，图4可以是图3的一种具体实现方式。充电管理器3中可以包括逻辑控制电路31和开关元件32，逻辑控制电路31包括第一输出端C1和第二输出端C2，开关元件32包括第一端d、第二端f和控制端e，其中：
开关元件32的第一端d与充电管理器3的第一引脚SYS电性连接，开关元件32的第二端f与充电管理器3的第二引脚BAT电性连接，开关元件32的控制端与逻辑控制电路31的第一输出端C1电性连接；
逻辑控制电路31的第二输出端C2与充电管理器3的第三引脚C电性连接；
其中：
所述当电池6电压高于第一阈值时，充电管理器3控制充电管理器3的第二引脚BAT和第一引脚SYS之间的电路导通，充电管理器3控制升压电路4的控制端c使升压电路4断开，电池6通过充电管理器3给负载5供电具体可以为：
当电池6电压高于第一阈值时，逻辑控制电路31控制开关元件32的控制端e，开关元件32的第一端d和第二端f导通，逻辑控制电路31控制升压电路4的控制端c，升压电路4断开，电池6通过充电管理器3的开关元件32给负载5供电；
所述当电池6电压低于第二阈值时，充电管理器3控制充电管理器的第二引脚BAT和第一引脚SYS之间的电路断开，充电管理器3控制升压电路4的控制端c使升压电路4导通述电池6通过升压电路4给负载5供电，第二阈值小于或等于第一阈值，具体可以为：
当电池6电压低于第二阈值时，逻辑控制电路31控制开关元件32的控制端e，开关元件32的第一端d和第二端f断开，逻辑控制电路31控制升压电路4的控制端c，升压电路4导通，电池6通过升压电路4给负载5供电，第二阈值小于或等于第一阈值。
其中，逻辑控制电路31还可以包括输入端g，逻辑控制电路31通过输入端g获取电池6的电压，如图4所示。
举例来说，该充电管理器3还包括包括模拟数字转换器(Analog-to-digital converter，ADC)模块，ADC模块通过充电管理器3的D管脚电性连接至电池6，用于采集电池6的电压并传送给逻辑控制电路31，以便逻辑控制电路31根据采集到的电池电压控制开关元件32和升压电路4的通断。
可见，升压电路4与充电管理器3中的开关元件32并联连接， 组成BypassBoost电路，开关元件32为Bypass电路，升压电路4为Boost电路。
其中，BypassBoost电路是指具有两种功能：Bypass和Boost状态的电路。本申请的负载供电电路中，当电池6的电压高于设定的输出最低电压即第一阈值，例如3.4V时，负载供电电路处于Bypass状态，即电池6经过导通的开关元件32为负载5供电，此时升压电路4不导通，Boost电路为截止状态。当电池6的电压低于或等于设定的输出最低电压即第二阈值时，负载供电电路处于Boost状态，需要升压使得负载供电电路的输出电压抬升至设定的输出最低电压，以使得负载5中的器件都正常工作，此时开关元件32不导通，Bypass电路为截止状态。
图5为本发明实施例中的电池6处于放电状态时的放电曲线图，以图4的电路设计举例说明。其中图5中的X轴表示电池6的放电时间，Y轴表示负载供电电路的输出电压VSYS，Y1轴表示电池6的电流，在电池6的电量充足，电压处于中高压段，例如4.2～3.4V之间时，电池6可经过开关元件32，即Bypass电路为负载5供电，电池6的电压即为负载供电电路的输出电压VSYS，电池6的电流不变，例如为300mA。当电池6处于低压段，例如低于或等于3.4V达到负载的关机电压时，为了使得负载5中的器件均正常工作，可使得电池6经过升压电路4即Boost电路提升负载供电电路的输出电压VSYS，例如提升至3.4V，以正常为负载5供电，直至电池6电量耗尽。例如电池6的电池保护电压为2.7V，即电池电压低于2.7V时关机，这样，在电池6的关机电压2.7V与负载的关机电压3.4V之间，可使得电池6在低压段的电池电量被充分利用。
进一步的，相比于现有技术可能会降低电池在高压段时的电压或者提供的Bypass电路在电池与负载之间或者在电池内部，且Bypass电路中通常会引入MOS管或MOS管和电感，本申请不需要降低电池在中高压段的电压为负载供电，且是利用了充电管理器中 的已有的开关元件作为Bypass电路，不仅可以提升负载的工作效率，也可以避免在电池内部或电池与负载之间引入额外的MOS管和电感导致的直流阻抗，可以提升电池的带载能力。
图6为另一种包括充电管理器3内部电路设计的负载供电电路的电路设计图，图6的电路设计可以是图3或图4的一种实现方式。充电管理器3内部的开关元件32可以为MOS管或者MOS管与二极管的组合连接等。以开关元件32为MOS管为例，如图6所示，MOS管Q1的栅极G为开关元件32的控制端e，MOS管Q1的源极S为开关元件32的第二端f，MOS管Q1的漏极D为开关元件32的第一端d。
这样，当电池6的电压高于第一阈值时，逻辑控制电路31控制MOS管Q1的32的栅极G，MOS管Q1的源极S和漏极D导通，逻辑控制电路31控制升压电路4的控制端c，升压电路4断开，电池6通过充电管理器3的MOS管Q1给负载5供电；当电池6电压低于第二阈值时，逻辑控制电路31控制MOS管Q1的栅极G，MOS管Q1的源极S和漏极D断开，逻辑控制电路31控制升压电路4的控制端c，升压电路4导通，电池6通过升压电路4给负载5供电。
上述的充电管理器3电性连接外部电源时，外部电源通过充电管理器3向负载5供电，逻辑控制电路31控制开关元件32的控制端c，开关元件32的第一端d和第二端f导通，外部电源通过开关元件32向电池充电。
此外，充电管理器3电性连接外部电源，且电池6电压高于第三阈值时，外部电源通过充电管理器3向负载供电，逻辑控制电路31可以控制开关元件32的控制端e，使开关元件32的第一端d和第二端f断开，第三阈值大于第一阈值。例如，第一阈值为3.6V，第三阈值为4.2V，电池6处于充电状态时，如果电池6的电压高于4.2V，为了保护电池6和负载5中的器件，充电管理器3中的逻辑控制电路31可以控制开关元件32的控制端e使得开关元件32断开， 电池6停止为负载5供电。
上述充电管理器3与升压电路4可以集成在同一电路芯片中，也可以不集成在同一电路芯片中。
图7为本发明实施例提供的一种包括升压电路4内部设计的电路设计图。图7中的升压电路4可以是上述图3或图4或图6中的升压电路的一种实现方式，其实现的方式可以有多种，本申请不做限定。在一种可能的设计中，升压电路4包括逻辑控制电路41、MOS管Q2、MOS管Q3、电感L2和电容C3，逻辑控制电路41的第一端c与逻辑控制电路31的C2端连接，第二端h与MOS管Q2的栅极连接，第三端i与MOS管Q3的栅极连接，MOS管Q3的漏极与电容C3的第一端m连接，MOS管Q3的源极与电感L2的第一端k连接，MOS管Q2的漏极与电感L2的第一端k连接，电感L2的第二端l与电池连接，电容C3的第二端n与负载供电电路的输出端VSYS连接。
从以上说明来看，本发明提供的负载供电电路，利用充电管理器和升压电路，可以使得电池低压段的电量被充分利用。进一步的，充电管理器中已有的开关元件和升压电路并联连接可组成BypassBoost电路，可实现在不增加系统负荷的情况下充分利用电池低压段的电量。
本发明还提供一种终端，该终端包括电池、负载以及负载供电电路，电池通过负载供电电路向负载进行供电，负载供电电路包括充电管理器和升压电路，该负载供电电路的电路实现方式可以参见上述图2～图7的说明，此处不再赘述。
由此，该终端在包括上述的负载供电电路时，可充分利用电池低压段的电池电量，使得终端的待机时间延长。
图8为本发明实施例提供的一种负载供电方法的流程示意图，该方法可应用上述本发明提供的负载供电电路中的任一种，该方法包括：
801、检测负载供电电路中电池的电压。
充电管理器中的逻辑控制电路可实时检测到负载供电电路中电池的电压。
802、当电池的电压高于第一阈值时，控制电池经过充电管理器为负载供电。
例如第一阈值为3.4V，即电池电压的中高段时，则充电管理器控制充电管理器的第二引脚BAT和第一引脚SYS之间的电路导通，例如第二引脚BAT和第一引脚SYS之间包括开关元件，该开关元件导通，同时，充电管理器控制升压电路截止，使电池通过充电管理器为负载供电。例如开关元件为充电管理器中的MOS管Q1时，充电管理器中的逻辑控制电路31控制MOS管Q1导通，MOS管Q1就相当于电子开关，使电池经过MOS管Q1为负载供电，并通过逻辑控制电路31控制升压电路不导通。
803、当电池的电压低于第二阈值时，则控制电池经过升压电路为系统负载电路供电。
例如第二阈值可以为3.4V，即电池电压的低压段，为了保证负载中的器件正常工作，以图7来说，通过逻辑控制电路控制MOS管Q1截止，并通过逻辑控制电路控制升压电路导通，使电池经过升压电路将负载供电电路的输出电压抬升后为系统负载供电。
由此，升压电路和充电管理器中的MOS管Q1组成BypassBoost电路，可根据电池的电压动态切换给负载供电，切换的条件和时机由充电管理器中的逻辑控制电路控制。
具体地，以图7来说，该充电管理器中的逻辑控制电路31可预先进行硬件或软件程序的设置，使得该逻辑控制电路31在检测到电池的电压时，根据电池的电压与第一阈值和第二阈值比对，切换电池经过升压电路或MOS管Q1为负载供电。其中，充电管理器中的逻辑控制电路31的逻辑真值表及相应的描述如下表1所示。
表1
状态 C1 C2
放电、电池中高压 1 0
放电、电池低压 0 1
充电 x 0
C1表示MOS管Q1的开关控制信号，C2表示升压电路的开关控制信号，C1逻辑真值置1时，指示充电管理器中的MOS管Q1导通，C1逻辑真值置0时，指示MOS管Q1截止。因此，当充电管理器中的逻辑控制电路31检测到电池电压在中高压段时，将充电管理器中的逻辑控制电路31的C1的逻辑真值置1，并将C2的逻辑真值置0。C2逻辑真值置1时，指示升压电路打开，C2逻辑真值置0时，指示升压电路关闭。因此，当充电管理器中的逻辑控制电路31检测到电池电压在低压段时，将充电管理器中的逻辑控制电路的C1的逻辑真值置0，并将C2的逻辑真值置1。
当终端处于充电状态时，充电管理器中MOS管Q1需导通，C1的逻辑真值为x，C2的逻辑真值为0，电流通过VBUS管脚和SW管脚以及电感为负载供电，部分电流通过充电管理器的SYS管脚和导通的MOS管Q1并经过BAT管脚为电池充电，C1的逻辑真值x随电池充电时电压的变化而变化。
图9为电池在充电状态和放电状态间转换时MOS管Q1的真值转换示意图。如图9所示，当电池处于放电且电压为中高压状态时，C1逻辑真值为1，MOS管Q1导通，C2逻辑真值为0，升压电路关闭，随着电池电量的消耗，电池电压从中高压进入低压状态时，需要升压电路导通，MOS管Q1截止，C1逻辑真值为0，C2逻辑真值为1；若电池处于放电且电压为中高压状态时，检测到充电设备插入终端，即处于充电状态时，C1逻辑真值为x，MOS管Q1导通，C2逻辑真值为0，升压电路关闭；反之，若电池处于充电状态时，检测到充电设备拔出，且电池电压处于中高压段时，C1逻辑真值为 1，MOS管Q1导通，C2逻辑真值为0，升压电路关闭；若电池处于放电且电池电压处于低压状态时，检测到充电设备插入终端，即转为充电状态，则C1逻辑真值为x，MOS管Q1导通，C2逻辑真值为0，升压电路关闭；反之，若电池处于充电状态时检测到充电设备拔出，且电池电压处于低压状态，则需要升压电路导通，MOS管Q1截止，C1逻辑真值为0，C2逻辑真值为1。
当升压电路的电路如图7所示时，如果电池电压处于低压段，即充电管理器中的MOS管Q1截止，升压电路导通时，升压电路中的逻辑控制电路41控制接地的MOS管Q2导通，另一MOS管Q3截止，这样，在将电池的电能储存至电感L2后，电感L2电流上升，逻辑控制电路41再控制MOS管Q2截止，MOS管Q3导通，电感储存的电能会传输至电容C3，电池电压叠加电容C3的电压得到负载供电电路的输出电压，使得输出电压抬升，负载中的器件可正常工作。因此，逻辑控制电路41是根据电池电压和输出电压动态调整该升压电路的，以保证输出电压稳定在设定的目标电压。
因此，在本发明实施例提供的供电方法中，利用电池电压与第一阈值和第二阈值的比较，在电池中高压段时通过充电管理器为负载供电，在电池低压段时通过升压电路抬升负载供电电路的输出端电压为负载供电，使得电池低压段的电量可被充分利用。进一步的，当利用充电管理器中已有的开关元件例如MOS管和升压电路组成BypassBoost电路时，在电池中高压段时，电池经过Bypass的MOS管为负载供电，在电池低压段时经过升压电路为负载供电，相比现有技术中在电池高压段时可能会降低电池电压，或Bypass电路设在电池内部或电池与负载之间的电路中，由于Bypass电路通常为MOS管或电感，会产生阻抗，会降低系统的工作效率，导致电池带载能力降低，本申请可利用充电管理器中已有的开关元件作为Bypass电路，可提升系统的工作效率，从而提升电池的带载能力。另外，可减小电池保护板的面积，降低电池保护板的发热风险。
在本申请所提供的几个实施例中，应该理解到，所揭露的设备和方法，可以通过其它的方式实现。例如，以上所描述的设备实施例仅仅是示意性的。
实现上述方法实施例的全部或部分步骤可以通过程序指令相关的硬件来完成，前述的程序可以存储于一计算机可读取存储介质中，该程序在执行时，执行包括上述方法实施例的步骤；而前述的存储介质包括：U盘、移动硬盘、只读存储器(Read Only Memory，简称ROM)、随机存取存储器(Random Access Memory，简称RAM)、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 (14)

  1. 一种负载供电电路，其特征在于，所述负载供电电路包括充电管理器和升压电路，其中：
    所述充电管理器包括第一引脚、第二引脚和第三引脚，所述充电管理器的第一引脚与所述负载电性连接，所述充电管理器的第二引脚与电池电性连接；
    所述升压电路包括第一端、第二端和控制端，所述升压电路的第一端与所述负载电性连接，所述升压电路的第二端与所述电池电性连接，所述升压电路的控制端与所述充电管理器的第三引脚电性连接；
    其中：
    当所述电池电压高于第一阈值时，所述充电管理器控制所述充电管理器的第二引脚和第一引脚之间的电路导通，所述充电管理器控制所述升压电路的控制端使所述升压电路断开，所述电池通过所述充电管理器给所述负载供电；
    当所述电池电压低于第二阈值时，所述充电管理器控制所述充电管理器的第二引脚和第一引脚之间的电路断开，所述充电管理器控制所述升压电路的控制端使所述升压电路导通，所述电池通过所述升压电路给所述负载供电；所述第二阈值小于或等于所述第一阈值。
  2. 根据权利要求1所述的负载供电电路，其特征在于，所述充电管理器包括逻辑控制电路和开关元件，所述逻辑控制电路包括第一输出端和第二输出端，所述开关元件包括第一端、第二端和控制端，其中：
    所述开关元件的第一端与所述充电管理器的第一引脚电性连接，所述开关元件的第二端与所述充电管理器的第二引脚电性连接，所述开关元件的控制端与所述逻辑控制电路的第一输出端电性连接；
    所述逻辑控制电路的第二输出端与所述充电管理器的第三引脚电性连接；
    其中：
    所述当所述电池电压高于第一阈值时，所述充电管理器控制所 述充电管理器的第二引脚和第一引脚之间的电路导通，所述充电管理器控制所述升压电路的控制端使所述升压电路断开，所述电池通过所述充电管理器给所述负载供电，具体为：
    当所述电池电压高于第一阈值时，所述逻辑控制电路控制所述开关元件的控制端，所述开关元件的第一端和第二端导通，所述逻辑控制电路控制所述升压电路的控制端，所述升压电路断开，所述电池通过所述充电管理器的开关元件给所述负载供电；
    所述当所述电池电压低于第二阈值时，所述充电管理器控制所述充电管理器的第二引脚和第一引脚之间的电路断开，所述充电管理器控制所述升压电路的控制端使所述升压电路导通，所述电池通过所述升压电路给所述负载供电，所述第二阈值小于或等于所述第一阈值，具体为：
    当所述电池电压低于第二阈值时，所述逻辑控制电路控制所述开关元件的控制端，所述开关元件的第一端和第二端断开，所述逻辑控制电路控制所述升压电路的控制端，所述升压电路导通，所述电池通过所述升压电路给所述负载供电，所述第二阈值小于或等于所述第一阈值。
  3. 根据权利要求2所述的负载供电电路，其特征在于，所述开关元件为金属绝缘体半导体MOS管，其中：
    所述MOS管的栅极为所述开关元件的控制端，所述MOS管的源极为所述开关元件的第二端，所述MOS管的漏极为所述开关元件的第一端。
  4. 根据权利要求2或3所述的负载供电电路，其特征在于，所述充电管理器电性连接外部电源时，所述外部电源通过所述充电管理器向所述负载供电，所述逻辑控制电路控制所述开关元件的控制端，所述开关元件的第一端和第二端导通，所述外部电源通过所述开关元件向所述电池充电。
  5. 根据权利要求2-4任一所述的负载供电电路，其特征在于，所述充电管理器电性连接所述外部电源，且所述电池电压高于第三阈值时，所述外部电源通过所述充电管理器向所述负载供电，所述逻辑控制电路控制所述开关元件的控制端,使所述开关元件的第一端和第二端断开，所述第三阈值大于所述第一阈值。
  6. 根据权利要求2-5任一所述的负载供电电路，其特征在于，所述逻辑控制电路还包括输入端，所述逻辑控制电路通过所述输入端获取所述电池的电压。
  7. 根据权利要求1-6任一所述的负载供电电路，其特征在于，所述充电管理器与所述升压电路集成在同一电路芯片中。
  8. 一种终端，其特征在于，所述终端包括电池、负载以及负载供电电路，所述电池通过所述负载供电电路向所述负载进行供电，所述负载供电电路包括充电管理器和升压电路，其中：
    所述充电管理器包括第一引脚、第二引脚和第三引脚，所述充电管理器的第一引脚与所述负载电性连接，所述充电管理器的第二引脚与电池电性连接；
    所述升压电路包括第一端、第二端和控制端，所述升压电路的第一端与所述负载电性连接，所述升压电路的第二端与所述电池电性连接，所述升压电路的控制端与所述充电管理器的第三引脚电性连接；
    其中：
    当所述电池电压高于第一阈值时，所述充电管理器控制所述充电管理器的第二引脚和第一引脚之间的电路导通，所述充电管理器控制所述升压电路的控制端使所述升压电路断开，所述电池通过所述充电管理器给所述负载供电；
    当所述电池电压低于第二阈值时，所述充电管理器控制所述充电管理器的第二引脚和第一引脚之间的电路断开，所述充电管理器控制所述升压电路的控制端使所述升压电路导通，所述电池通过所述升压电路给所述负载供电；所述第二阈值小于或等于所述第一阈值。
  9. 根据权利要求8所述的终端，其特征在于，所述充电管理器包括逻辑控制电路和开关元件，所述逻辑控制电路包括第一输出端和第二输出端，所述开关元件包括第一端、第二端和控制端，其中：
    所述开关元件的第一端与所述充电管理器的第一引脚电性连接，所述开关元件的第二端与所述充电管理器的第二引脚电性连接，所述开关元件的控制端与所述逻辑控制电路的第一输出端电性连接；
    所述逻辑控制电路的第二输出端与所述充电管理器的第三引脚电性连接；
    其中：
    所述当所述电池电压高于第一阈值时，所述充电管理器控制所述充电管理器的第二引脚和第一引脚之间的电路导通，所述充电管理器控制所述升压电路的控制端使所述升压电路断开，所述电池通过所述充电管理器给所述负载供电，具体为：
    当所述电池电压高于第一阈值时，所述逻辑控制电路控制所述开关元件的控制端，所述开关元件的第一端和第二端导通，所述逻辑控制电路控制所述升压电路的控制端，所述升压电路断开，所述电池通过所述充电管理器的开关元件给所述负载供电；
    所述当所述电池电压低于第二阈值时，所述充电管理器控制所述充电管理器的第二引脚和第一引脚之间的电路断开，所述充电管理器控制所述升压电路的控制端使所述升压电路导通，所述电池通过所述升压电路给所述负载供电，所述第二阈值小于或等于所述第一阈值，具体为：
    当所述电池电压低于第二阈值时，所述逻辑控制电路控制所述开关元件的控制端，所述开关元件的第一端和第二端断开，所述逻辑控制电路控制所述升压电路的控制端，所述升压电路导通，所述电池通过所述升压电路给所述负载供电，所述第二阈值小于或等于所述第一阈值。
  10. 根据权利要求9所述的终端，其特征在于，所述开关元件为金属绝缘体半导体MOS管，其中：
    所述MOS管的栅极为所述开关元件的控制端，所述MOS管的源极为所述开关元件的第二端，所述MOS管的漏极为所述开关元件的第一端。
  11. 根据权利要求9或10所述的终端，其特征在于，所述充电管理器电性连接外部电源时，所述外部电源通过所述充电管理器向所述负载供电，所述逻辑控制电路控制所述开关元件的控制端，所述开关元件的第一端和第二端导通，所述外部电源通过所述开关元件向所述电池充电。
  12. 根据权利要求9-11任一所述的终端，其特征在于，所述充 电管理器电性连接所述外部电源，且所述电池电压高于第三阈值时，所述外部电源通过所述充电管理器向所述负载供电，所述逻辑控制电路控制所述开关元件的控制端,使所述开关元件的第一端和第二端断开，所述第三阈值大于所述第一阈值。
  13. 根据权利要求9-12任一所述的终端，其特征在于，所述逻辑控制电路还包括输入端，所述逻辑控制电路通过所述输入端获取所述电池的电压。
  14. 根据权利要求8-13任一所述的终端，其特征在于，所述充电管理器与所述升压电路集成在同一电路芯片中。
PCT/CN2016/077426 2016-03-25 2016-03-25 一种负载供电电路和终端 Ceased WO2017161587A1 (zh)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US16/085,883 US11309592B2 (en) 2016-03-25 2016-03-25 Load power supply circuit and terminal
CN201680080771.3A CN109075704A (zh) 2016-03-25 2016-03-25 一种负载供电电路和终端
PCT/CN2016/077426 WO2017161587A1 (zh) 2016-03-25 2016-03-25 一种负载供电电路和终端
EP16894940.2A EP3416273B1 (en) 2016-03-25 2016-03-25 Power supply circuit for load, and terminal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2016/077426 WO2017161587A1 (zh) 2016-03-25 2016-03-25 一种负载供电电路和终端

Publications (1)

Publication Number Publication Date
WO2017161587A1 true WO2017161587A1 (zh) 2017-09-28

Family

ID=59899867

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2016/077426 Ceased WO2017161587A1 (zh) 2016-03-25 2016-03-25 一种负载供电电路和终端

Country Status (4)

Country Link
US (1) US11309592B2 (zh)
EP (1) EP3416273B1 (zh)
CN (1) CN109075704A (zh)
WO (1) WO2017161587A1 (zh)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110221677A (zh) * 2018-02-28 2019-09-10 华为技术有限公司 一种处理器及电子设备
WO2019236182A1 (en) * 2018-06-05 2019-12-12 Qualcomm Incorporated Direct battery connection within a voltage regulator system
CN111316524A (zh) * 2017-10-13 2020-06-19 深圳传音通讯有限公司 一种用于智能终端的充电电路及具有该电路的智能终端
CN113078699A (zh) * 2020-01-03 2021-07-06 华为技术有限公司 一种终端及其供电方法、充放电管理电路
CN115001065A (zh) * 2022-04-06 2022-09-02 华为技术有限公司 一种电路、供电方法、电子设备及计算机程序产品

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7228790B2 (ja) * 2019-02-05 2023-02-27 パナソニックＩｐマネジメント株式会社 充電制御装置及び充電制御方法
GB2596441A (en) * 2019-04-15 2021-12-29 Mitsubishi Electric Corp Sensor device
US11936229B2 (en) 2020-09-25 2024-03-19 Texas Instruments Incorporated USB battery charging mode advertising and differentiation
CN112383117B (zh) * 2020-11-27 2023-09-19 努比亚技术有限公司 一种充电控制电路
CN114337630B (zh) * 2021-12-03 2025-08-22 深圳市联洲国际技术有限公司 电源供电系统的控制电路、其控制方法以及控制系统
CN114489303B (zh) * 2021-12-30 2024-01-05 深圳市广和通无线股份有限公司 上电时序控制电路和系统
CN117047747A (zh) * 2022-05-07 2023-11-14 Oppo广东移动通信有限公司 机器人的控制系统、机器人及机器人的控制方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1701482A (zh) * 2003-08-05 2005-11-23 松下电器产业株式会社 直流电源和配备电源的电池供电电子装置
CN201130906Y (zh) * 2007-12-17 2008-10-08 福建师范大学 一种蓄电池在线监测终端的电源自适应装置
CN102088194A (zh) * 2009-12-07 2011-06-08 台达电子工业股份有限公司 车辆负载电压的稳定模块及其方法
CN103825351A (zh) * 2014-02-24 2014-05-28 广西电网公司电力科学研究院 一种智能化储能式应急电源系统
JP5692570B2 (ja) * 2010-09-17 2015-04-01 株式会社デンソー 昇圧装置
TWI501521B (zh) * 2014-07-07 2015-09-21 Chicony Power Tech Co Ltd 具有二次升壓電路的電源供應裝置

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3863273B2 (ja) * 1997-12-26 2006-12-27 富士通株式会社 電源装置
JP2000333377A (ja) * 1999-05-21 2000-11-30 Sony Computer Entertainment Inc エンタテインメントシステムおよび充電システム
US6118254A (en) * 1999-07-30 2000-09-12 Compaq Computer Corporation Battery charge control architecture for constant voltage maximum power operation
US7531986B2 (en) * 2006-02-23 2009-05-12 Eveready Battery Company, Inc. Power supply for battery powered devices
WO2008030398A2 (en) * 2006-09-05 2008-03-13 Summit Microelectronics, Inc Circuits and methods for controlling power in a battery operated system
US20090108677A1 (en) * 2007-10-29 2009-04-30 Linear Technology Corporation Bidirectional power converters
JP5196366B2 (ja) * 2007-11-09 2013-05-15 ソニーモバイルコミュニケーションズ株式会社 携帯端末および充電システム
FR2937195A1 (fr) * 2008-10-13 2010-04-16 Peugeot Citroen Automobiles Sa Dispositif d'alimentation regulee pour au moins un organe electrique connecte a un reseau d'alimentation.
JP5589346B2 (ja) * 2009-10-27 2014-09-17 株式会社リコー 充電回路及びその充電方法
JP2012120267A (ja) * 2010-11-29 2012-06-21 Toshiba Corp 充電制御装置
US9218043B2 (en) * 2012-07-26 2015-12-22 Intersil Americas LLC Battery charge system and method capable of operating in different configurations
CN103066666B (zh) 2013-01-22 2015-08-26 矽力杰半导体技术(杭州)有限公司 一种升压型电池充电管理系统及其控制方法
US9160194B2 (en) * 2013-06-27 2015-10-13 Richtek Technology Corporation Bi-directional switching regulator and control circuit thereof
US10033204B2 (en) * 2014-09-03 2018-07-24 Mophie, Inc. Systems and methods for battery charging and management
US9973017B2 (en) * 2014-09-19 2018-05-15 Samsung Electronics Co., Ltd. Charger circuit including a plurality of charging paths

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1701482A (zh) * 2003-08-05 2005-11-23 松下电器产业株式会社 直流电源和配备电源的电池供电电子装置
CN201130906Y (zh) * 2007-12-17 2008-10-08 福建师范大学 一种蓄电池在线监测终端的电源自适应装置
CN102088194A (zh) * 2009-12-07 2011-06-08 台达电子工业股份有限公司 车辆负载电压的稳定模块及其方法
JP5692570B2 (ja) * 2010-09-17 2015-04-01 株式会社デンソー 昇圧装置
CN103825351A (zh) * 2014-02-24 2014-05-28 广西电网公司电力科学研究院 一种智能化储能式应急电源系统
TWI501521B (zh) * 2014-07-07 2015-09-21 Chicony Power Tech Co Ltd 具有二次升壓電路的電源供應裝置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3416273A4 *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111316524A (zh) * 2017-10-13 2020-06-19 深圳传音通讯有限公司 一种用于智能终端的充电电路及具有该电路的智能终端
CN110221677A (zh) * 2018-02-28 2019-09-10 华为技术有限公司 一种处理器及电子设备
CN110221677B (zh) * 2018-02-28 2023-02-10 华为技术有限公司 一种处理器及电子设备
WO2019236182A1 (en) * 2018-06-05 2019-12-12 Qualcomm Incorporated Direct battery connection within a voltage regulator system
CN113078699A (zh) * 2020-01-03 2021-07-06 华为技术有限公司 一种终端及其供电方法、充放电管理电路
CN115001065A (zh) * 2022-04-06 2022-09-02 华为技术有限公司 一种电路、供电方法、电子设备及计算机程序产品

Also Published As

Publication number Publication date
US20190115634A1 (en) 2019-04-18
EP3416273A4 (en) 2019-03-06
CN109075704A (zh) 2018-12-21
EP3416273A1 (en) 2018-12-19
EP3416273B1 (en) 2022-01-26
US11309592B2 (en) 2022-04-19

Similar Documents

Publication Publication Date Title
US11336105B2 (en) Multi-battery charging and discharging device and mobile terminal
WO2017161587A1 (zh) 一种负载供电电路和终端
US12057725B2 (en) Charging control circuit, terminal device, control method and computer-readable storage medium
CN110191215B (zh) 终端及处理方法
CN107221995A (zh) 双电池充放电方法、控制电路、移动终端及可读存储介质
CN113258652A (zh) 电池控制系统和方法、电子设备
CN106340925A (zh) 一种充电控制方法、装置及终端
CN107547755B (zh) Usb接口保护方法、移动终端及计算机可读存储介质
CN110797924B (zh) 电池控制系统和方法、电子设备
US11050282B2 (en) Power supply control method and device, storage medium and electronic device
CN115933852A (zh) 一种存储系统的供电架构及其备电控制方法
CN105978084A (zh) 一种电子设备进行充电的方法和装置
CN111478378B (zh) 保护电路、充电控制装置和方法、电子设备
CN111614131A (zh) 电子设备和放电控制方法
CN110912227A (zh) 一种充放电结构及充电方法
CN112437421A (zh) 蓝牙控制方法、装置、存储介质及移动终端
CN107302245A (zh) 一种充电控制方法、及终端
CN110620602B (zh) 反向充电与数据传输共用系统、复用数据线和电子装置
CN103532173A (zh) 移动设备及具有该移动设备的充电系统
CN107749751B (zh) 移动终端供电系统及移动终端
CN110739742A (zh) 充电保护方法、充电保护电路、充电系统以及终端
CN223553053U (zh) 放电控制电路与移动终端
CN110649673A (zh) 移动终端
CN115276180A (zh) 充电电路、电子设备及充电系统
CN118100646A (zh) 电压转换电路、可调节供电电路、智能终端及供电方法

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 2016894940

Country of ref document: EP

ENP Entry into the national phase

Ref document number: 2016894940

Country of ref document: EP

Effective date: 20180913

NENP Non-entry into the national phase

Ref country code: DE

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 16894940

Country of ref document: EP

Kind code of ref document: A1