WO2020019300A1 - 一种终端设备的供电电路、终端设备及供电方法 - Google Patents

一种终端设备的供电电路、终端设备及供电方法 Download PDF

Info

Publication number
WO2020019300A1
WO2020019300A1 PCT/CN2018/097431 CN2018097431W WO2020019300A1 WO 2020019300 A1 WO2020019300 A1 WO 2020019300A1 CN 2018097431 W CN2018097431 W CN 2018097431W WO 2020019300 A1 WO2020019300 A1 WO 2020019300A1
Authority
WO
WIPO (PCT)
Prior art keywords
battery
circuit
load
output voltage
chip
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/CN2018/097431
Other languages
English (en)
French (fr)
Inventor
邱钰鹏
李瑞亮
周海滨
张奋伟
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 JP2021524083A priority Critical patent/JP7169444B2/ja
Priority to EP18928090.2A priority patent/EP3800760B1/en
Priority to PCT/CN2018/097431 priority patent/WO2020019300A1/zh
Priority to CN201880071372.XA priority patent/CN111316528B/zh
Priority to EP23170332.3A priority patent/EP4254720B1/en
Priority to US17/259,045 priority patent/US11949272B2/en
Priority to CN202211284671.6A priority patent/CN115833298B/zh
Priority to CN202211267625.5A priority patent/CN115632454B/zh
Priority to RU2021103291A priority patent/RU2757198C1/ru
Publication of WO2020019300A1 publication Critical patent/WO2020019300A1/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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/00306—Overdischarge protection
    • 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
    • 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
    • H02J7/00032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
    • H02J7/00036—Charger exchanging data with battery
    • 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
    • H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
    • 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
    • H02J7/007186—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage obtained with the battery disconnected from the charge or discharge circuit
    • 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
    • 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
    • H02J7/007194—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 of the battery
    • 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
    • H02M3/06—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using resistors or capacitors, e.g. potential divider
    • H02M3/07—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using resistors or capacitors, e.g. potential divider using capacitors charged and discharged alternately by semiconductor devices with control electrode, e.g. charge pumps
    • 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
    • H02J2207/10—Control circuit supply, e.g. means for supplying power to the control circuit
    • 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
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2310/00—The network for supplying or distributing electric power characterised by its spatial reach or by the load
    • H02J2310/10—The network having a local or delimited stationary reach
    • H02J2310/20—The network being internal to a load
    • H02J2310/22—The load being a portable electronic device
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present application relates to the technical field of terminal equipment, and in particular, to a power supply circuit of a terminal equipment, a terminal equipment, and a power supply method.
  • a terminal device When a terminal device takes a picture, it needs to consume a large current, which will cause the output voltage of the battery to drop sharply. In severe cases, it will shut down without prompting a low battery, which will reduce the user experience.
  • the battery temperature is also low.
  • the battery has internal resistance. When the temperature is low, the internal resistance of the battery will increase, which will cause the output voltage of the battery to drop and cause abnormal shutdown.
  • the application provides a power supply circuit, a terminal device, and a power supply method for a terminal device, which can avoid abnormal shutdown or restart of the terminal device when the output voltage of the battery is low or the temperature is low.
  • a power supply circuit for a terminal device including: a boost circuit, a battery chip, and a controller;
  • the battery terminal of the battery chip is connected to the positive electrode of the battery, and the power output terminal of the battery chip is connected to a load; the battery chip is configured to provide an output voltage of the battery to the load;
  • An input terminal of the booster circuit is connected to a positive electrode of the battery, and an output terminal of the booster circuit is connected to the load; the booster circuit is capable of boosting the input voltage and outputting;
  • the controller is configured to control the step-up circuit to work and control the battery chip to stop supplying power to the load when the sampling temperature is less than a preset temperature value and / or the output voltage of the battery is less than a first preset voltage value;
  • the sampling temperature is the temperature of the terminal device or the temperature of the battery .
  • the method further includes: a voltage comparison circuit
  • the controller is further configured to control the voltage comparison circuit to work when the boost circuit is operated;
  • the voltage comparison circuit is configured to compare the output voltage of the booster circuit with the input voltage of the booster circuit, and determine that the output voltage of the booster circuit is less than the input voltage of the booster circuit, and send A trigger signal to the controller;
  • the controller is further configured to control the battery chip and the boost circuit to supply power to the load at the same time when the trigger signal is received.
  • the voltage comparison circuit can obtain the difference between the output voltage and the input voltage of the boost circuit.
  • the voltage comparison circuit may use any circuit or chip that realizes the above functions.
  • the voltage comparison circuit can be implemented by a comparator and a peripheral resistor, and the above difference can be calculated by using resistors with different resistance values.
  • a voltage comparison circuit is used to implement whether the battery chip and the boost circuit are triggered to supply power to the load at the same time.
  • the voltage comparison circuit sends a trigger signal to the controller only when the output voltage of the boost circuit is less than the input voltage of the boost circuit.
  • the voltage comparison circuit sends a trigger signal to the controller only when the output voltage of the boost circuit is smaller than the input voltage of the boost circuit and the voltage difference between the two exceeds a first threshold.
  • the voltage comparison circuit may be built in the battery chip, or may be provided outside the battery chip.
  • the voltage comparison circuit is built in the battery chip, or the voltage comparison circuit is provided in the battery chip outside.
  • the battery chip includes: a switch tube;
  • a first end of the switching tube is connected to a battery terminal of the battery chip, and a second end of the switching tube is connected to an energy output terminal of the battery chip;
  • the controller controls the battery chip to supply power to a load. Specifically, the controller controls the switch tube to close.
  • the controller is further configured to detect that a battery chip is controlled when a charger is inserted into the terminal device. The load is powered, and the boost circuit is controlled to stop working.
  • the load is directly powered by the charger.
  • the controller is further configured to control the operation of the boost circuit and the battery chip to stop supplying power to a load Thereafter, when the screen of the terminal device is turned off and the output voltage of the battery is greater than a second preset voltage value, controlling the output voltage of the booster circuit to be less than or equal to the output voltage of the battery, and then controlling the battery
  • the chip supplies power to the load, and then controls the boost circuit to stop working;
  • the second preset voltage value is smaller than the first preset voltage value.
  • the booster circuit can be controlled to stop working, and the battery chip works to provide a power supply path for the load.
  • the controller is further configured to, after controlling the boost circuit to stop working, when the screen of the terminal device is When it is off and the output voltage of the battery is less than or equal to the second preset voltage value, the boost circuit is controlled to work and the battery chip is controlled to stop supplying power to the load.
  • the controller is further configured to: when the output voltage of the battery is less than or equal to a third preset voltage value Control the terminal device to shut down;
  • the third preset voltage value is smaller than the second preset voltage value.
  • the controller controls the booster circuit to work and controls the battery chip to stop supplying power to the load, which specifically includes :
  • the higher output voltage may Pour into the battery chip.
  • first control the output voltage of the boost circuit to be less than or close to (for example, equal to or slightly greater than) the output voltage of the battery, then control the battery chip to stop supplying power to the load, and then control the boost
  • the output voltage of the voltage circuit is a fourth preset voltage value; the fourth preset voltage value is smaller than the first preset voltage value.
  • the boosting circuit is a Boost circuit or a charge pump circuit.
  • a power management chip in a tenth possible implementation manner, it further includes: a power management chip;
  • the power management chip is configured to determine that the sampling temperature is less than a preset temperature value and / or the output voltage of the battery is less than a first preset voltage value, and send a determination result to the controller.
  • the controller is implemented by a system on a chip of a terminal device.
  • the power supply circuit provided in the above embodiment requires a controller to control the working status of the battery chip and the booster circuit.
  • the following provides a power supply circuit that can automatically switch the power supply path according to the output voltage of the battery, without the need for control, which is simple and convenient. Further reducing control costs.
  • the difference between the booster circuit in the following embodiments and the booster circuit in the above embodiments is that there are more bypass circuits.
  • a power supply circuit for a terminal device including: a boost circuit, a battery chip, and a controller;
  • the battery terminal of the battery chip is connected to the positive electrode of the battery, and the power output terminal of the battery chip is connected to a load; the battery chip is configured to provide an output voltage of the battery to the load;
  • the booster circuit has its own bypass circuit; the input end of the booster circuit is connected to the positive electrode of the battery, and the output end of the booster circuit is connected to the load; the booster circuit is capable of performing the input voltage Output after boosting; the first end of the bypass circuit is connected to the input of the boost circuit, the second end of the bypass circuit is connected to the output of the boost circuit; the boost circuit and the bypass
  • the conduction states of the circuit are complementary;
  • the controller is configured to control the step-up circuit to work and control the battery chip to stop supplying power to the load when the sampling temperature is less than a preset temperature value and / or the output voltage of the battery is less than a first preset voltage value;
  • the bypass circuit automatically turns on to supply power to the load;
  • the sampling temperature is the temperature of the terminal device or the temperature of the battery.
  • the controller is further configured to detect that when the charger is inserted into the terminal device, control the battery chip to supply power to the load, and control the boost circuit stop working.
  • the controller is further configured to control the operation of the booster circuit and the battery chip to stop supplying power to a load After that, when the screen of the terminal device is off and the output voltage of the battery is greater than a second preset voltage value, controlling the output voltage of the booster circuit to be less than or equal to the output voltage of the battery, and then controlling the battery chip Power the load, and then control the boost circuit to stop working;
  • the second preset voltage value is smaller than the first preset voltage value.
  • the controller is further configured to, after controlling the boost circuit to stop working, when the When the screen is off and the output voltage of the battery is less than or equal to the second preset voltage value, the boost circuit is controlled to work and the battery chip is controlled to stop supplying power to the load.
  • the controller is further configured to: when the output voltage of the battery is less than or equal to a third preset voltage value Control the terminal device to shut down;
  • the third preset voltage value is smaller than the second preset voltage value.
  • the controller controls the booster circuit to work and controls the battery chip to stop supplying power to the load, which specifically includes :
  • the fourth preset voltage value is smaller than the first preset voltage value.
  • the boosting circuit is a Boost circuit or a charge pump circuit.
  • the method further includes: a power management chip;
  • the power management chip is configured to determine that the sampling temperature is less than a preset temperature value and / or the output voltage of the battery is less than a first preset voltage value, and send a determination result to the controller.
  • the controller is implemented by a system on a chip of a terminal device.
  • the conduction states of the booster circuit and the bypass circuit are complementary, and specifically include: when the booster circuit is on The bypass circuit is not conducting; when the bypass circuit is conducting, the booster circuit is not conducting.
  • a terminal device including: a battery, a load, and the power supply circuit provided by the first aspect or the second aspect;
  • the power supply circuit is configured to provide electric energy of the battery to the load.
  • a power supply method for a terminal device is provided, which is applied to the terminal device;
  • the terminal device includes a battery, a load, and a power supply circuit;
  • the power supply circuit includes: a booster circuit, a battery chip, and a controller;
  • the battery terminal of the battery chip is connected to the positive electrode of the battery, and the power output terminal of the battery chip is connected to the load;
  • the battery chip is used to provide the output voltage of the battery to the load;
  • the boost circuit An input terminal of is connected to a positive electrode of the battery, and an output terminal of the booster circuit is connected to the load;
  • the method includes:
  • the controller controls the boost circuit to work and controls the battery chip to stop supplying power to the load, the sampling temperature The temperature of the terminal device or the temperature of the battery;
  • the battery chip and the booster circuit are controlled to supply power to the load at the same time.
  • a power supply method for a terminal device is also provided, which is applied to the terminal device;
  • the terminal device includes a battery, a load, and a power supply circuit;
  • the power supply circuit includes: a boost circuit, a battery chip, and a controller;
  • the battery terminal of the battery chip is connected to the positive electrode of the battery, and the power output terminal of the battery chip is connected to the load;
  • the battery chip is used to provide the output voltage of the battery to the load;
  • the boost The input terminal of the circuit is connected to the positive electrode of the battery, and the output terminal of the booster circuit is connected to the load;
  • the booster circuit has its own bypass circuit; the first end of the bypass circuit is connected to the booster circuit
  • An input terminal, a second terminal of the bypass circuit is connected to an output terminal of the boost circuit, and the conduction states of the boost circuit and the bypass circuit are complementary;
  • the method includes:
  • the controller controls the boosting circuit to work and controls the battery chip to stop supplying power to the load;
  • the bypass circuit automatically turns on to supply power to the load;
  • the sampling temperature is The temperature of the terminal device or the temperature of the battery.
  • a boost circuit is added to the terminal device, and when it is determined that the sampling temperature is lower than the preset temperature value and / or the output voltage of the battery is lower than the preset voltage value, the boost circuit is controlled to work; when the output voltage of the boost circuit is When it is smaller than the input voltage of the booster circuit, the battery chip and the booster circuit are controlled to supply power to the load at the same time; the sampling temperature is a terminal device temperature or a battery temperature. Therefore, the power supply circuit provided in the embodiment of the present application can provide the load to the load after the temperature of the terminal device is low and / or the output voltage of the battery is low. This meets the needs of load power consumption and avoids abnormal shutdown or restart caused when the load requires a large current.
  • FIG. 1 is a schematic diagram of a power supply circuit of a terminal device according to an embodiment of the present application
  • FIG. 2 is a schematic diagram of another power supply circuit for a terminal device according to an embodiment of the present application.
  • FIG. 3 is a schematic diagram of another power supply circuit for a terminal device according to an embodiment of the present application.
  • FIG. 4 is a schematic diagram of a voltage comparison circuit built into a battery chip according to an embodiment of the present application.
  • FIG. 5 is a schematic diagram of still another terminal device power supply circuit according to an embodiment of the present application.
  • FIG. 6 is a schematic diagram of another power supply circuit for a terminal device according to an embodiment of the present application.
  • FIG. 7 is a flowchart of a power supply method according to an embodiment of the present application.
  • FIG. 8 is a flowchart of another power supply method according to an embodiment of the present application.
  • the power supply circuit of the terminal device is first introduced below.
  • Embodiment 1 of a power supply circuit Embodiment 1 of a power supply circuit:
  • the embodiment of the present application does not limit the specific type of the terminal device, and may be any device powered by a battery, such as a mobile phone, a notebook computer, a wearable electronic device (such as a smart watch), a tablet computer, augmented reality (AR) ⁇ Virtual reality (VR) equipment, on-board computer equipment, etc.
  • a battery such as a mobile phone, a notebook computer, a wearable electronic device (such as a smart watch), a tablet computer, augmented reality (AR) ⁇ Virtual reality (VR) equipment, on-board computer equipment, etc.
  • the terminal device is a mobile phone, which requires large current consumption when taking pictures, causing VB to drop sharply. In severe cases, the mobile phone is not promptly shut down without prompting a low battery, which will reduce the user experience.
  • the internal resistance of the battery due to the internal resistance of the battery, the internal resistance of the battery will increase as the temperature decreases. Therefore, when the ambient temperature is low or the battery temperature is low, the internal resistance of the battery increases, which in turn causes VB to drop, causing the phone to shut down or restart.
  • an embodiment of the present application provides a power supply circuit of the terminal device.
  • a boost circuit is added to the terminal device.
  • the boost circuit is controlled to work; when the output of the boost circuit is When the voltage is less than the input voltage of the booster circuit, the battery chip and the booster circuit are controlled to supply power to the load at the same time; the sampling temperature is a terminal device temperature or a battery temperature. Therefore, the power supply circuit provided in the embodiment of the present application can provide the load to the load after the temperature of the terminal device is low and / or the output voltage of the battery is low.
  • the power supply circuit of the present application can control both the battery chip and the booster circuit.
  • Load power supply that is, the two power supply paths are both on, and the two currents are provided to the load together, so that the power supply current can be increased to meet the load's large current demand. Therefore, when the load requires a large current, the terminal device does not shut down abnormally and can continue to be used normally, thereby improving the user experience.
  • FIG. 1 is a schematic diagram of a power supply circuit of a terminal device according to an embodiment of the present application.
  • the terminal device power supply circuit provided in the embodiment of the present application includes a battery chip 100, a booster circuit 300, a controller (not shown in the figure), and a power management chip 200.
  • the battery terminal VBAT of the battery chip 100 is connected to the positive electrode of the battery BAT, and the power output terminal VSYS of the battery chip 100 is connected to a load, such as the on-chip system SOC and other loads.
  • the voltage of VBAT is recorded as VB.
  • the input terminal of the booster circuit 300 is connected to the positive electrode of the battery BAT, and the output terminal of the booster circuit 300 is connected to the load. That is, the output terminal of the booster circuit 300 is connected to the power output terminal VSYS of the battery chip 100. together.
  • the battery chip 100 can provide an output voltage of a battery to a load.
  • the battery chip 100 mainly performs charge and discharge control on the battery BAT, and can generally be implemented by using a switching power supply. For example, when the charging power terminal VCHG charges the BAT, the battery chip 100 controls the switching tubes Q1, Q2, Q3, and Q4 to be closed.
  • the power management chip 200 converts the power of the VSYS to power the load, and the load includes a system-on-a-chip (SOC) and other loads.
  • SOC system-on-a-chip
  • the power management chip 200 detects the size of the VS, and when it is judged that the VS is lower than a set shutdown threshold or lower than a UVLO (Under Voltage Lock Out) voltage, the terminal device is shut down or restarted.
  • a UVLO Under Voltage Lock Out
  • the controller is configured to control the boosting circuit 300 to work when the sampling temperature is less than a preset temperature value and / or the output voltage of the battery is less than a first preset voltage value, and to control the battery chip 100 to stop as a load Power supply; that is, the output voltage of the battery is provided to the load through the boost circuit 300.
  • the output voltage of the boost circuit 300 is less than the input voltage of the boost circuit 300, the battery chip 100 and the boost circuit 300 are controlled to supply power to the load at the same time; the sampling temperature is a terminal Device temperature or battery temperature.
  • the boost circuit 300 may be a circuit capable of implementing a boost function, and may be, for example, a boost circuit or a charge pump circuit. It should be noted that the boost circuit 300 can increase the input voltage and then provide it. However, the booster circuit does not necessarily increase the input voltage, and it may pass through without transmitting the boost. That is, after the output voltage of the battery passes through the booster circuit, the voltage may not change, or the voltage may increase. For example: Set the output voltage of the boost circuit 300 to V0.
  • the boost circuit 300 When the input voltage of the boost circuit 300 is less than V0, the boost circuit 300 will increase the input voltage to V0 and then output; when the input voltage of the boost circuit 300 is greater than V0
  • the booster circuit 300 transmits the voltage transparently, that is, when the input voltage is output through the booster circuit 300, the voltage does not change.
  • the sampling temperature can be obtained by a temperature sensor.
  • the temperature sensor can collect the temperature of the terminal device or the temperature of the battery.
  • the terminal device is a mobile phone, and the temperature sensor can be set at any position on the mobile phone when collecting the temperature of the mobile phone.
  • the temperature sensor collects the temperature of the battery and can be set on the phone near the battery.
  • the triggering condition for the controller to control the operation of the boost circuit may be one of them. That is, when the temperature is low, the boost circuit is started to work, or when the battery output voltage is low, the boost circuit is started to work. In addition, in order to avoid frequent startup of the booster circuit, the booster circuit can also be started when the temperature is low and the output voltage of the battery is low.
  • the role of the booster circuit 300 is to boost the input voltage and output it. Because the input terminal of the boost circuit 300 is connected to the positive electrode of the battery BAT, that is, the boost circuit 300 can increase the output voltage of the battery and output it to the load.
  • the booster circuit 300 works, if a large pulse current occurs during the operation of the terminal device, the output voltage of the booster circuit 300 will drop significantly, that is, the output voltage of the booster circuit 300 is smaller than the booster circuit. 300 input voltage. At this time, the battery chip 100 and the boost circuit 300 can be controlled to supply power to the load at the same time, thereby increasing the supply current and the supply voltage. To avoid abnormal shutdown of terminal equipment when large pulse current occurs.
  • the boost circuit does not work, and only the battery chip 100 supplies power to the load. That is, when the sampling temperature is greater than or equal to a preset temperature value, control Q4 is turned on, and the control boost circuit is not operated, and only the battery chip 100 supplies power to the load.
  • the boost circuit does not work and is only provided by the battery chip 100 Load is powered. That is, when the output voltage of the battery is greater than or equal to the first preset voltage value, control Q4 is turned on, and the boost circuit is controlled not to work, and only the battery chip 100 supplies power to the load.
  • the boost circuit does not work, and only the battery chip 100 supplies power to the load.
  • Embodiment 2 of the power supply circuit is a diagrammatic representation of Embodiment 2 of the power supply circuit:
  • the input voltage and the output voltage of the booster circuit are compared by a voltage comparison circuit.
  • FIG. 2 is a schematic diagram of another power supply circuit for a terminal device according to an embodiment of the present application.
  • the terminal device power supply circuit provided in this embodiment includes the power supply circuit described in FIG. 1, and further includes a voltage comparison circuit 101.
  • the controller is further configured to control the voltage comparison circuit 101 to operate when the boost circuit 300 is operated. That is, the voltage comparison circuit 101 needs to operate only when the booster circuit 300 operates.
  • the voltage comparison circuit 101 is configured to compare the output voltage of the boost circuit 300 with the input voltage of the boost circuit 300, and determine that the output voltage of the boost circuit 300 is smaller than that of the boost circuit 300. When a voltage is input, a trigger signal is sent to the controller. Alternatively, when the output voltage of the boost circuit 300 is less than the input voltage and the difference between the two exceeds a first threshold, the voltage comparison circuit 101 sends a trigger signal to the controller.
  • the voltage comparison circuit 101 can obtain a difference between an output voltage and an input voltage of the booster circuit 300.
  • the voltage comparison circuit 101 may use any circuit or chip that realizes the above functions.
  • the voltage comparison circuit 101 can be implemented by using a comparator and a peripheral resistor, and the above difference can be calculated by using resistors with different resistance values.
  • the controller is further configured to control the battery chip 100 and the boost circuit 300 to supply power to the load at the same time when the trigger signal sent by the voltage comparison circuit 101 is received. That is, Q4 is controlled to be turned on, and the boost circuit 300 is controlled to continue to work.
  • the voltage comparison circuit 101 is used to implement whether the battery chip 100 and the boost circuit 300 are triggered to supply power to the load at the same time.
  • the voltage comparison circuit 101 sends a trigger signal to the controller only when the output voltage of the boost circuit 300 is less than the input voltage of the boost circuit 300.
  • the voltage comparison circuit 101 sends a trigger signal to the controller only when the output voltage of the boost circuit 300 is less than the input voltage of the boost circuit 300 and the voltage difference between the two exceeds a first threshold.
  • the first threshold value can be set as required.
  • the selection of the first threshold value can be selected from the following value range: 50mV-100mV.
  • the battery chip 100 supplies power to the load can be achieved by controlling the switching state of the switching tube inside the battery chip 100.
  • the battery chip includes a switching tube Q4.
  • a first terminal of the switching tube Q4 is connected to the battery terminal VBAT of the battery chip 100, and a second terminal of the switching tube Q4 is connected to the power output terminal VSYS of the battery chip 100.
  • the controller controls the battery chip 100 to supply power to the load. Specifically, the controller controls the switch Q4 to close.
  • Q4 is connected between the battery terminal VBAT and the power output terminal VSYS of the battery chip 100, when Q4 is closed, the VBAT terminal and the VSYS terminal are turned on, so the output voltage of the BAT is provided to the load through VBAT, Q4, and VSYS; When Q4 is turned off, the power supply path of the battery chip 100 to the load is turned off.
  • Q4 is a controllable switching transistor, that is, by controlling the level of the control terminal of Q4, its switching state can be controlled. For example, at a high level, Q4 is turned on and Q4 is turned off.
  • the type of Q4 is not specifically limited in the embodiment of the present application, and may be, for example, a MOS tube, an IGBT tube, or a BJT tube.
  • the voltage comparison circuit 101 may be built in the battery chip 100.
  • the voltage comparison circuit 101 may be disposed outside the battery chip 100.
  • the controller may be implemented by a system-on-chip SOC of the terminal device.
  • the controller can also be set independently of the SOC.
  • the controller is implemented by the SOC.
  • the SOC can control the operation of the boost circuit 300.
  • the boost circuit 300 has an enable pin, and the enable pin can be active high.
  • the SOC needs to start the boost circuit 300, a high-level signal is sent to the enable pin of the boost circuit 300, and the boost circuit 300 starts to work.
  • the SOC does not send a high-level signal to the enable pin of the booster circuit 300, the enable pin of the booster circuit 300 defaults to a low level and does not work.
  • the SOC receives a trigger signal sent by the voltage comparison circuit 101, it controls Q4 to be turned on, so that the battery chip 100 and the boost circuit 300 supply power to the load at the same time.
  • the SOC may send a control signal to the battery chip 100 so that the battery chip 100 controls Q4 to be turned on.
  • the comparison circuit 101 is built in the battery chip 100, and the controller is implemented by the system-on-chip SOC.
  • the controller is further configured to detect when the charger is inserted into the terminal device, control the battery chip 100 to supply power to the load, and control the boost circuit 300 to stop working.
  • the boost circuit 300 can stop working and the battery chip 100 works Provides power to the load.
  • the load When the charger is plugged into the terminal device, the load will be directly powered by external power.
  • the boost circuit 300 is controlled to work, and the battery chip 100 is controlled to stop supplying power to the load
  • the controller is further configured to control the output voltage of the booster circuit to be less than or equal to the output voltage of the battery when the screen of the terminal device is off and the output voltage of the battery is greater than a second preset voltage value, and then control The battery chip supplies power to the load, and then controls the boost circuit to stop working.
  • the second preset voltage value is smaller than the first preset voltage value.
  • the first preset voltage value is, for example, 3.6V
  • the second preset voltage value is, for example, 3.3V.
  • the boost circuit 300 can be controlled to stop working, and the battery chip 100 works to provide a power supply path for the load.
  • the controller is further configured to control the boosting circuit to work when a screen of the terminal device is turned off and an output voltage of the battery is less than or equal to the second preset voltage value. Even if the screen of the terminal device is turned off, the required power is reduced, but the booster circuit needs to be operated when the output voltage of the battery is less than or equal to the first preset voltage value, otherwise the terminal device will be shut down or restarted.
  • controller is further configured to control the terminal device to be turned off when the output voltage of the battery is less than or equal to a third preset voltage value; the third preset voltage value is less than the second preset voltage value .
  • the third preset voltage value is 3V.
  • the output voltage of the battery is less than or equal to 3V, indicating that the battery power is very low, the battery power is not sufficient to maintain the normal operation of the terminal device, and the terminal device needs to be turned off.
  • the magnitude relationship between the first preset voltage value, the second preset voltage value, and the third preset voltage value is sequentially decreased, but the specific voltage value may be selected according to the type of the terminal device. And the type of battery, which is not specifically limited in this embodiment.
  • the controller controls the boost circuit to start working and controls the battery chip to stop supplying power to the load, which may specifically include:
  • the fourth preset voltage value is smaller than the first preset voltage value.
  • the fourth preset voltage value may be equal to the second preset voltage value, for example, both are 3.3V.
  • the fourth preset voltage value may also be different from the second preset voltage value, and may be specifically set according to actual needs.
  • the boost circuit In order to enable the boost circuit in time when the battery voltage is low, the boost circuit needs to be turned on when the output voltage of the battery is less than the first preset voltage value.
  • the enabling of the boost circuit in the embodiments of the present application can be understood as enabling the boost circuit. If the boost circuit is turned on when the output voltage of the battery drops to the fourth preset voltage value, the power supply delay will be caused.
  • the fourth preset voltage value is generally a standard voltage required by the load, and the output voltage of the battery will gradually decrease as the power supply time increases. After the boost circuit is turned on, if the output voltage of the battery (that is, the input voltage of the boost circuit) is greater than the fourth preset voltage value, the boost circuit does not boost the output voltage of the battery, but transparently transmits the boost voltage.
  • the output voltage of the battery; at this time, the voltage actually output by the booster circuit is greater than the fourth preset voltage value.
  • the boost circuit boosts the output voltage of the battery to the fourth preset voltage value and then outputs; at this time, the actual output of the boost circuit The voltage is equal to the fourth preset voltage value.
  • the output voltage of the control boost circuit is smaller than the output voltage of the battery.
  • the output voltage of the boost circuit can be equal to the output voltage of the battery minus a preset threshold.
  • the preset threshold can be set to 150mV.
  • the specific value of the preset threshold is not specifically limited in this embodiment, and may be selected according to the type of the battery chip.
  • the power supply circuit may further include: a power management chip 200;
  • the power management chip 200 is configured to determine that the sampling temperature is less than a preset temperature value and / or the output voltage of the battery is less than a first preset voltage value, and send the determination result to the controller.
  • the power management chip 200 determines whether the temperature is low and whether the output voltage of the battery is low.
  • the power management chip 200 may include a DC-DC conversion DC-DC circuit and a low dropout linear regulator (LDO, Low Dropout Regulator).
  • LDO Low Dropout linear regulator
  • the LDO is used to stabilize the voltage and provide it to the SOC.
  • the power supply circuit provided in the embodiment of this application is used
  • the LDO output voltage will not drop due to the voltage drop at the VSYS terminal, which further improves the reliability of the LDO power supply.
  • the power supply circuit provided in this embodiment can use the switch Q4 in the existing battery chip of the terminal device to control the power supply path of the battery chip by controlling the switching state of Q4, and the power supply path of the booster circuit can be provided by the terminal device. SOC is controlled, so that only one booster circuit is added on the basis of the existing hardware facilities of the terminal equipment, the cost is low, the hardware changes are small, and the technical solution is used for promotion and application.
  • both the battery chip and the booster circuit provide a power supply path that requires active control, for example, the switch Q4 in the battery chip 100 needs to be controlled to close.
  • the switch Q4 in the battery chip 100 needs to be controlled to close.
  • the output voltage of the battery is high, that is, when the booster circuit is not required to work, it is also necessary to control the booster circuit to stop working.
  • the following provides another implementation, which can control whether the boosted voltage boosts the output voltage of the battery and outputs it. When two power supply paths are required, Q4 is not required to be closed, and the two power paths are automatically implemented. Continuity.
  • the power supply circuit provided in the above embodiment requires a controller to control the working status of the battery chip and the booster circuit.
  • the following provides a power supply circuit that can automatically switch the power supply path according to the output voltage of the battery, without the need for control, which is simple and convenient. Further reducing control costs.
  • the difference between the booster circuit in this embodiment and the booster circuits in the above two embodiments is that there are more bypass circuits.
  • Embodiment 3 of the power supply circuit is a
  • FIG. 5 is a schematic diagram of another power supply circuit for a terminal device according to an embodiment of the present application.
  • the power supply circuit of the terminal device provided in this embodiment includes: a booster circuit 400 with a bypass circuit, a battery chip 100, and a controller.
  • the battery terminal VBAT of the battery chip 100 is connected to the positive electrode of the battery BAT, and the power output terminal VSYS of the battery chip 100 is connected to the load; the battery chip 100 is used to provide the output voltage of the battery BAT to the negative.
  • the boost circuit 400 with a bypass includes a boost circuit and a bypass circuit.
  • An input terminal of the booster circuit is connected to a positive electrode of the battery, and an output terminal of the booster circuit is connected to the load.
  • a first terminal of the bypass circuit is connected to an input terminal of the boost circuit, and a second terminal of the bypass circuit is connected to an output terminal of the boost circuit.
  • the conducting states of the booster circuit and the bypass circuit are complementary.
  • the complementary conduction states mean that when the booster circuit is turned on, the bypass circuit is not turned on; when the bypass circuit is turned on, the booster circuit is not turned on.
  • the non-conducting states are not complementary, that is, both the booster circuit and the bypass circuit can be non-conducting at the same time.
  • the controller is configured to control the step-up circuit to work and control the battery chip to stop supplying power to the load when the sampling temperature is less than a preset temperature value and / or the output voltage of the battery is less than a first preset voltage value;
  • the bypass circuit automatically turns on to supply power to the load;
  • the sampling temperature is the temperature of the terminal device or the temperature of the battery.
  • the booster circuit works, if a large pulse current occurs during the operation of the terminal device, it will cause a large drop in the output voltage of the booster circuit, that is, the output voltage of the booster circuit is less than the input voltage of the booster circuit. At this time, because the input voltage of the bypass circuit is higher than the output voltage, the bypass circuit will be automatically turned on, thereby increasing the supply current and supply voltage. To avoid abnormal shutdown of terminal equipment when large pulse current occurs. When the bypass circuit is turned on, the boost circuit will be automatically disconnected.
  • the bypass circuit may be implemented by a special chip, that is, the chip includes both a boost circuit and a bypass circuit.
  • the input and output of the boost circuit are connected in parallel with a diode, that is, the anode of the diode is connected to the input of the boost circuit, and the cathode of the diode is connected to the boost circuit.
  • the output uses the basic properties of forward conduction and reverse blocking of the diode.
  • the booster circuit works to boost the output voltage of the battery and provide it to the VSYS terminal.
  • the boosted voltage is greater than the output voltage of the battery, so it is equivalent to VSYS.
  • the terminal voltage VB is higher than the VBAT terminal voltage VS. Therefore, the diode is turned off in the reverse direction and is not conductive, that is, the output voltage of the battery does not pass through the branch where the diode is located.
  • the boost circuit When the condition that triggers the boost circuit to start working is that the sampling temperature is less than the preset temperature value, when the temperature is greater than or equal to the preset temperature value, the boost circuit does not work, and only the battery chip 100 supplies power to the load.
  • the boost circuit When the condition for triggering the boost circuit to start working is that the output voltage of the battery is less than the first preset voltage value, when the output voltage of the battery is greater than or equal to the first preset voltage value, the boost circuit does not work, and only the battery chip 100 Power the load.
  • the boost circuit When the condition for triggering the boost circuit to start working is that the sampling temperature is less than the preset temperature value and the battery output voltage is less than the first preset voltage value, when the temperature is greater than or equal to the preset temperature value, or the output voltage of the battery is greater than or equal to the first At a preset voltage value, the boost circuit does not work, and only the battery chip 100 supplies power to the load.
  • a boost circuit 400 with a bypass circuit is added to the terminal device.
  • control is performed.
  • the booster circuit works; when the output voltage of the booster circuit is less than the input voltage of the booster circuit, the bypass circuit automatically turns on to provide a power supply path for the load.
  • the power supply circuit provided in the embodiment of the present application can provide the load to the load after the output voltage of the battery is increased when the temperature of the terminal device is low and / or the output voltage of the battery is low, so as to meet the power demand of the load and avoid The abnormal shutdown or restart caused when the load needs a large current, and even if the booster circuit is working, there may be a large pulse current when the load uses electricity, which will pull down the output voltage of the booster circuit. The output voltage decreases and is lower than the input voltage. At this time, the bypass circuit is automatically turned on to meet the high current demand of the load. Therefore, when the load requires a large current, the terminal device does not shut down abnormally and can continue to be used normally, thereby improving the user experience.
  • the power management chip 200 may include a DC-DC conversion DC-DC circuit and a low dropout linear regulator (LDO, Low Dropout Regulator).
  • LDO Low Dropout linear regulator
  • the LDO is used to stabilize the voltage and provide it to the SOC.
  • the power supply circuit provided in the embodiment of this application is used
  • the LDO output voltage will not drop due to the voltage drop at the VSYS terminal, which further improves the reliability of the LDO power supply.
  • Embodiment 4 of the power supply circuit is a
  • FIG. 6 is a schematic diagram of a power supply circuit of another terminal device according to an embodiment of the present application.
  • the controller may be implemented by a system-on-chip SOC of the terminal device.
  • the controller can also be set independently of the SOC.
  • the controller is implemented by a SOC.
  • the SOC is used to control the operation of the boost circuit 400 with a bypass circuit.
  • the boost circuit 400 with a bypass circuit has an enable pin. The pin can be active-high.
  • the SOC needs to start the boost circuit 400 with a bypass circuit, it sends a high-level signal to the enable pin of the boost circuit 400 with a bypass circuit.
  • the boost circuit 400 of the bypass circuit starts to work.
  • the SOC does not send a high-level signal to the enable pin of the boost circuit 400 with its own bypass circuit
  • the enable pin of the boost circuit 400 with its own bypass circuit defaults to a low level, so it will not work. .
  • the power supply circuit provided in this embodiment does not require a voltage comparison circuit, but when the voltage VS at the VSYS terminal is smaller than the voltage VB at the VBAT terminal, the booster circuit is turned on, otherwise the bypass circuit is turned on. That is, once the booster circuit 400 with its own bypass circuit is enabled, the conduction state between the booster circuit and the bypass circuit can be automatically switched according to the voltage at the input and output terminals, and no control is required.
  • the controller controls the boost circuit to start working and controls the battery chip to stop supplying power to the load, which may specifically include:
  • the fourth preset voltage value is smaller than the first preset voltage value.
  • the fourth preset voltage value may be equal to the second preset voltage value, for example, both are 3.3V.
  • the fourth preset voltage value may also be different from the second preset voltage value, and may be specifically set according to actual needs.
  • the boost circuit In order to enable the boost circuit in time when the battery voltage is low, the boost circuit needs to be turned on when the output voltage of the battery is less than the first preset voltage value. If the boost circuit is turned on when the output voltage of the battery is equal to the fourth preset voltage value, the power supply delay will be caused.
  • the fourth preset voltage value is generally a standard voltage required by the load, and the output voltage of the battery will gradually decrease as the power supply time increases.
  • the embodiments of the present application further provide a terminal device.
  • the terminal device may be a mobile terminal device such as a cell phone or an IPAD, or may be another fixed terminal device using a battery as a power source.
  • the terminal device includes a power supply circuit provided in any of the above embodiments.
  • the power supply circuit is configured to provide power of the battery to a load in the terminal device.
  • the power supply circuit provided in the embodiment of the present application can provide the load to the load after the output voltage of the battery is increased when the temperature of the terminal device is low and / or the output voltage of the battery is low, so as to meet the power demand of the load and avoid Abnormal shutdown or restart caused when the load requires a large current.
  • the embodiments of the present application further provide a power supply method for terminal devices, which will be described in detail below with reference to the accompanying drawings.
  • this figure is a flowchart of a power supply manner of a terminal device according to an embodiment of the present application.
  • the power supply method of the terminal device provided in this embodiment is applied to a power supply circuit.
  • a power supply circuit reference may be made to the power supply circuit shown in FIGS. 1-4.
  • the method includes:
  • S802 When it is determined that the sampling temperature is less than the preset temperature value and / or the output voltage of the battery is less than the first preset voltage value, execute S803. That is, the triggering condition for starting the operation of the booster circuit can judge only the temperature, only the voltage, or both the temperature and the voltage.
  • the boost circuit is started.
  • the boost circuit is a Boost circuit
  • the chip of the Boost circuit has Enable pin.
  • the boost circuit is started.
  • the voltage and the temperature may be determined first, and the timing of the voltage and temperature determination is not limited in the embodiment of the present application.
  • the preset temperature can be set according to the specific environment in which the terminal device is located, for example, it can be set to 0 degrees Celsius.
  • the first preset voltage value can be set according to the type of the terminal device, for example, it can be set to 3.6V.
  • S803 Control the booster circuit to work and control the battery chip to stop supplying power to the load. Specifically, it may be: first control the output voltage of the booster circuit to be less than or close to (for example, equal to or slightly greater than) the output voltage of the battery
  • the output voltage of the boost circuit is controlled by the output voltage of the battery minus a threshold voltage, and the threshold voltage can be selected as required, for example, it can be set to 150mV; or, the output voltage of the boost circuit is controlled to be equal to the output voltage of the battery.
  • the fourth preset voltage value may be less than or equal to the first preset voltage value, And the fourth preset voltage value may be greater than or equal to the current output voltage of the battery.
  • the fourth preset voltage value can also be selected according to actual needs, for example, it can be selected as 3.3V.
  • the terminal equipment is provided with a power supply path by a boost circuit.
  • S804 Detect whether a charger is inserted into the terminal device, and if so, execute S805.
  • Control Q4 to be closed, that is, control the battery chip to supply power to the load, and control the boost circuit to stop working.
  • the terminal device provides a power supply path for the load by the battery chip.
  • S807 is further included after S803, that is, S807 may be further included after the boost circuit is controlled to work and the battery chip stops supplying power to the load.
  • S807 determine whether the screen of the terminal device is off and whether the output voltage of the battery is greater than a second preset voltage value; if the screen is off and the output voltage of the battery is greater than a second preset voltage value, perform S808; if the screen is off If it is not turned off, or if the screen is turned off but the output voltage of the battery is less than or equal to the second preset voltage value, step S809 is performed. It should be noted that in S807, if it is determined that the screen of the terminal device is not turned off, it is not necessary to determine whether the output voltage of the battery is greater than the second preset voltage value, and directly select and execute S809.
  • the second preset voltage value can be set according to actual needs, for example, it can be selected to be 3.3V.
  • S808 Control the output voltage of the booster circuit to be less than or equal to the output voltage of the battery, and then control the battery chip to supply power to the load, that is, close Q4; then control the booster circuit to stop working, and specifically, the booster can be turned off. Enable signal of the circuit.
  • the terminal device is powered by the battery chip.
  • the battery chip may provide a power supply path until the output voltage of the battery is less than or equal to a third preset voltage value, and the terminal device is controlled to be turned off; the third preset voltage value is less than the third preset voltage value.
  • the second preset voltage value The battery chip can also provide the power supply path first, and then continue to monitor the battery output voltage.
  • the booster circuit can be used to provide the power supply path and disconnect the battery chip from the load. powered by.
  • the terminal device continues to provide a power supply path by the boosted voltage until the output voltage of the battery is less than or equal to a third preset voltage value, and controls the terminal device to shut down; the third preset voltage value is less than the first preset voltage value. Two preset voltage values.
  • the third preset voltage value can be set according to actual needs, for example, it can be selected as 3V, that is, when the output voltage of the battery is less than or equal to 3V, the terminal device is controlled to shut down.
  • this figure is a flowchart of another power supply method for a terminal device according to an embodiment of the present application.
  • the power supply method of the terminal device provided in this embodiment is applied to a power supply circuit.
  • a power supply circuit For the power supply circuit, reference may be made to the power supply circuit shown in FIG. 5 and FIG. 6.
  • the method includes:
  • S901 when the sampling temperature is less than a preset temperature value and / or the battery output voltage is less than a first preset voltage value, controlling the boosting circuit to work and controlling the battery chip to stop supplying power to the load;
  • the method further includes: when the charger is inserted into the terminal device, controlling the battery chip to supply power to the load, and controlling the boost circuit to stop working.
  • the second preset voltage value is smaller than the first preset voltage value.
  • the third preset voltage value is smaller than the second preset voltage value.
  • Controlling the boost circuit to work and controlling the battery chip to stop supplying power to the load may include:
  • the fourth preset voltage value is smaller than the first preset voltage value.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (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)
  • Power Sources (AREA)

Abstract

一种终端设备的供电电路，该供电电路包括升压电路（300）、电池芯片（100）和控制器，其中，电池芯片（100）用于将电池的输出电压提供给负载；升压电路（300）的输入端连接电池的正极，升压电路的输出端连接负载；升压电路（300）用于将输入的电压进行升压后输出；控制器，用于当采样温度小于预设温度值和/或电池的输出电压小于第一预设电压值时，控制升压电路工作且控制电池芯片停止为负载供电；当升压电路的输出电压小于升压电路的输入电压时，控制电池芯片和升压电路同时为负载供电。该方案可以在温度较低和/或电池输出电压较低时，将电池的输出电压升高，并且，当终端存在较大脉冲电流，拉低升压电路（300）的输出电压时，能够控制电池芯片和升压电路均为负载供电，增加供电电流。

Description

一种终端设备的供电电路、终端设备及供电方法 技术领域
本申请涉及终端设备技术领域，尤其涉及一种终端设备的供电电路、终端设备及供电方法。
背景技术
目前，终端设备大部分采用电池供电，例如手机、IPAD等。当电池电压比较低或者低温场景下使用终端设备时，例如拍照或录像等，经常出现异常关机或重启问题。
终端设备拍照时，需要耗费较大电流，会导致电池的输出电压急剧下降，严重时会没有提示电量低而瞬间关机，这样降低用户体验。
同理，当环境温度低时，电池温度也低。而电池存在内阻，当温度较低时，电池内阻会变大，进而造成电池的输出电压下降，引起异常关机。
发明内容
本申请提供了一种终端设备的供电电路、终端设备及供电方法，能够在电池的输出电压较低或温度较低的情况下，避免终端设备出现异常关机或重启问题。
第一方面，提供一种终端设备的供电电路，包括：升压电路、电池芯片和控制器；
所述电池芯片的电池端连接电池的正极，所述电池芯片的电能输出端连接负载；所述电池芯片，用于将电池的输出电压提供给所述负载；
所述升压电路的输入端连接所述电池的正极，所述升压电路的输出端连接所述负载；所述升压电路能够将输入的电压进行升压后输出；
所述控制器，用于当采样温度小于预设温度值和/或电池的输出电压小于第一预设电压值时，控制所述升压电路工作且控制所述电池芯片停止为负载供电；当所述升压电路的输出电压小于所述升压电路的输入电压时，控制所述电池芯片和所述升压电路同时为所述负载供电；所述采样温度为终端设备的温度或电池的温度。
在第一方面的第一种可能的实现方式中，还包括：电压比较电路；
所述控制器，还用于控制所述升压电路工作时，控制所述电压比较电路工作；
所述电压比较电路，用于将所述升压电路的输出电压与所述升压电路的输入电压进行比较，判断所述升压电路的输出电压小于所述升压电路的输入电压时，发送触发信号给所述控制器；
所述控制器，还用于收到所述触发信号时，控制所述电池芯片和所述升压电路同时为所述负载供电。
电压比较电路能够获得升压电路的输出电压与输入电压的差值。
电压比较电路可以采用实现以上功能的任何电路或者芯片均可。例如，电压比较电路可以通过比较器和外围搭建电阻来实现，利用不同阻值的电阻实现以上差值的计算。
为了保证不频繁控制电池芯片的供电状态，以及提高抗干扰能力，本实施例中利用电压比较电路实现是否触发电池芯片和升压电路同时为负载供电。电压比较电路只有升压电 路的输出电压小于所述升压电路的输入电压时，才发送触发信号给所述控制器。或者，电压比较电路只有升压电路的输出电压小于所述升压电路的输入电压且两者电压差值超过第一阈值时，才发送触发信号给所述控制器。
电压比较电路可以内置于所述电池芯片内，也可以设置于电池芯片之外。
结合第一方面及上述任一种可能的实现方式中，在第二种可能的实现方式中，所述电压比较电路内置于所述电池芯片，或，所述电压比较电路设置于所述电池芯片之外。
结合第一方面及上述任一种可能的实现方式中，在第三种可能的实现方式中，所述电池芯片包括：开关管；
所述开关管的第一端连接所述电池芯片的电池端，所述开关管的第二端连接所述电池芯片的电能输出端；
所述控制器控制所述电池芯片为负载供电，具体为：所述控制器控制所述开关管闭合。
结合第一方面及上述任一种可能的实现方式中，在第四种可能的实现方式中，所述控制器，还用于检测充电器插入所述终端设备时，控制所述电池芯片为所述负载供电，且控制所述升压电路停止工作。
当充电器插入终端设备时，负载直接由充电器供电。
结合第一方面及上述任一种可能的实现方式中，在第五种可能的实现方式中，所述控制器，还用于在控制所述升压电路工作且所述电池芯片停止为负载供电之后，当所述终端设备的屏幕熄灭且所述电池的输出电压大于第二预设电压值时，控制所述升压电路的输出电压小于或等于所述电池的输出电压，再控制所述电池芯片为负载供电，然后控制所述升压电路停止工作；
所述第二预设电压值小于所述第一预设电压值。
终端设备的屏幕熄灭时，需求电量将下降。因此电池的输出电压即使小于第一预设电压值，但只要大于第二预设电压值，就可以控制升压电路停止工作，由电池芯片工作为负载提供供电通路。
结合第一方面及上述任一种可能的实现方式中，在第六种可能的实现方式中，所述控制器，还用于在控制所述升压电路停止工作之后，当所述终端设备屏幕熄灭且所述电池的输出电压小于或等于所述第二预设电压值时，控制所述升压电路工作且控制所述电池芯片停止为负载供电。
结合第一方面及上述任一种可能的实现方式中，在第七种可能的实现方式中，所述控制器，还用于当所述电池的输出电压小于或等于第三预设电压值时，控制所述终端设备关机；
所述第三预设电压值小于所述第二预设电压值。
结合第一方面及上述任一种可能的实现方式中，在第八种可能的实现方式中，所述控制器，控制所述升压电路工作且控制所述电池芯片停止为负载供电，具体包括：
当终端设备由电池芯片提供供电通路刚切换为升压电路提供供电通路时，如果升压电路的输出电压较高，但电池芯片提供的供电通路还没有断开，则较高的输出电压可能会倒灌进电池芯片。为了避免出现这样的倒灌，先控制所述升压电路的输出电压小于或接近(例 如等于或稍大于)所述电池的输出电压，再控制所述电池芯片停止为负载供电，然后控制所述升压电路的输出电压为第四预设电压值；所述第四预设电压值小于所述第一预设电压值。
结合第一方面及上述任一种可能的实现方式中，在第九种可能的实现方式中，所述升压电路为Boost电路或电荷泵电路。
结合第一方面及上述任一种可能的实现方式中，在第十种可能的实现方式中，还包括：电源管理芯片；
所述电源管理芯片，用于判断所述采样温度小于预设温度值和/或电池的输出电压小于第一预设电压值，并将判断结果发送给所述控制器。
结合第一方面及上述任一种可能的实现方式中，在第十一种可能的实现方式中，所述控制器由终端设备的片上系统来实现。
以上实施例提供的供电电路，需要控制器控制电池芯片和升压电路的工作状态，下面提供一种供电电路，可以自动根据电池的输出电压的高低切换供电通路，不需要进行控制，简单方便，进一步降低了控制成本。以下实施例中的升压电路与以上实施例中的升压电路的区别是多了旁路电路。
第二方面，提供一种终端设备的供电电路，包括：升压电路、电池芯片和控制器；
所述电池芯片的电池端连接电池的正极，所述电池芯片的电能输出端连接负载；所述电池芯片，用于将电池的输出电压提供给所述负载；
所述升压电路自带旁路电路；所述升压电路的输入端连接所述电池的正极，所述升压电路的输出端连接所述负载；所述升压电路能够将输入的电压进行升压后输出；所述旁路电路的第一端连接所述升压电路的输入端，所述旁路电路的第二端连接所述升压电路的输出端；所述升压电路和旁路电路的导通状态互补；
所述控制器，用于当采样温度小于预设温度值和/或电池的输出电压小于第一预设电压值时，控制所述升压电路工作且控制所述电池芯片停止为负载供电；当所述升压电路的输出电压小于所述升压电路的输入电压时，所述旁路电路自动导通为所述负载供电；所述采样温度为终端设备的温度或电池的温度。
在第二方面的第一种可能的实现方式中，所述控制器，还用于检测充电器插入所述终端设备时，控制所述电池芯片为所述负载供电，且控制所述升压电路停止工作。
结合第二方面及上述任一种可能的实现方式中，在第二种可能的实现方式中，所述控制器，还用于在控制所述升压电路工作且所述电池芯片停止为负载供电之后，当所述终端设备屏幕熄灭且所述电池的输出电压大于第二预设电压值时，控制所述升压电路的输出电压小于或等于所述电池的输出电压，再控制所述电池芯片为负载供电，然后控制所述升压电路停止工作；
所述第二预设电压值小于所述第一预设电压值。
结合第二方面及上述任一种可能的实现方式中，在第三种可能的实现方式中，所述控制器，还用于在控制所述升压电路停止工作之后，当所述终端设备的屏幕熄灭且所述电池的输出电压小于或等于所述第二预设电压值时，控制所述升压电路工作且控制所述电池芯 片停止为负载供电。
结合第二方面及上述任一种可能的实现方式中，在第四种可能的实现方式中，所述控制器，还用于当所述电池的输出电压小于或等于第三预设电压值时，控制所述终端设备关机；
所述第三预设电压值小于所述第二预设电压值。
结合第二方面及上述任一种可能的实现方式中，在第五种可能的实现方式中，所述控制器，控制所述升压电路工作且控制所述电池芯片停止为负载供电，具体包括：
先控制所述升压电路的输出电压小于或接近(例如等于或稍大于)所述电池的输出电压，再控制所述电池芯片停止为负载供电，然后控制所述升压电路的输出电压为第四预设电压值；
所述第四预设电压值小于所述第一预设电压值。
结合第二方面及上述任一种可能的实现方式中，在第六种可能的实现方式中，所述升压电路为Boost电路或电荷泵电路。
结合第二方面及上述任一种可能的实现方式中，在第七种可能的实现方式中，还包括：电源管理芯片；
所述电源管理芯片，用于判断所述采样温度小于预设温度值和/或电池的输出电压小于第一预设电压值，并将判断结果发送给所述控制器。
结合第二方面及上述任一种可能的实现方式中，在第八种可能的实现方式中，所述控制器由终端设备的片上系统来实现。
结合第二方面及上述任一种可能的实现方式中，在第九种可能的实现方式中，所述升压电路和旁路电路的导通状态互补，具体包括：当升压电路导通时，旁路电路不导通；当旁路电路导通时，升压电路不导通。
第三方面，提供一种终端设备，包括：电池、负载和上述第一方面或第二方面提供的供电电路；
所述供电电路，用于将所述电池的电能提供给所述负载。
第四方面，提供一种终端设备的供电方法，应用于所述终端设备；所述终端设备包括电池、负载和供电电路；所述供电电路包括：升压电路、电池芯片和控制器；所述电池芯片的电池端连接所述电池的正极，所述电池芯片的电能输出端连接所述负载；所述电池芯片，用于将所述电池的输出电压提供给所述负载；所述升压电路的输入端连接所述电池的正极，所述升压电路的输出端连接所述负载；
该方法包括：
当采样温度小于预设温度值和/或电池的输出电压小于第一预设电压值时，所述控制器控制所述升压电路工作且控制所述电池芯片停止为负载供电，所述采样温度为所述终端设备的温度或电池的温度；
在所述升压电路工作的过程中，当所述升压电路的输出电压小于所述升压电路的输入电压时，控制所述电池芯片和所述升压电路同时为所述负载供电。
第五方面，还提供一种终端设备的供电方法，应用于所述终端设备；所述终端设备包 括电池、负载和供电电路；所述供电电路包括：升压电路、电池芯片和控制器；所述电池芯片的电池端连接所述电池的正极，所述电池芯片的电能输出端连接所述负载；所述电池芯片，用于将所述电池的输出电压提供给所述负载；所述升压电路的输入端连接所述电池的正极，所述升压电路的输出端连接所述负载；所述升压电路自带旁路电路；所述旁路电路的第一端连接所述升压电路的输入端，所述旁路电路的第二端连接所述升压电路的输出端；所述升压电路和旁路电路的导通状态互补；
该方法包括：
当采样温度小于预设温度值和/或电池的输出电压小于第一预设电压值时，所述控制器控制所述升压电路工作且控制所述电池芯片停止为所述负载供电；
在所述升压电路工作的过程中，当所述升压电路的输出电压小于所述升压电路的输入电压时，所述旁路电路自动导通为所述负载供电；所述采样温度为所述终端设备的温度或所述电池的温度。
从以上技术方案可以看出，本申请实施例具有以下优点：
在终端设备增加升压电路，当确定采样温度低于预设温度值和/或电池的输出电压低于预设电压值时，控制所述升压电路工作；当所述升压电路的输出电压小于所述升压电路的输入电压时，控制所述电池芯片和所述升压电路同时为所述负载供电；所述采样温度为终端设备温度或电池温度。因此，本申请实施例提供的供电电路，可以在终端设备温度较低和/或电池的输出电压较低时，将电池的输出电压升高后提供给负载。这样满足负载用电的需要，避免负载需要大电流时引起的异常关机或重启。应用本申请实施例提供的技术方案可以提高用户体验，而且可以进一步充分利用电池的剩余电量。由于升压电路的存在终端设备关机对应的电池电压值可以进一步降低，延长终端设备的续航时间。而且即使升压电路在工作时可能随着负载存在较大脉冲电流，拉低升压电路的输出电压，而对于这种情况，本申请的控制器可以控制电池芯片和升压电路均为负载供电，即两路供电通路均导通，由此可以增加供电电流，满足负载需要的大电流。
附图说明
图1为本申请实施例提供的一种终端设备供电电路示意图；
图2为本申请实施例提供的另一种终端设备供电电路示意图；
图3为本申请实施例提供的又一种终端设备供电电路示意图；
图4为本申请实施例提供的电压比较电路内置于电池芯片的示意图；
图5为本申请实施例提供的再一种终端设备供电电路示意图；
图6为本申请实施例提供的另一种终端设备供电电路示意图；
图7为本申请实施例提供的一种供电方法流程图；
图8为本申请实施例提供的另一种供电方法流程图。
具体实施方式
为了使本领域技术人员更好地理解本申请实施例提供的技术方案，下面先介绍终端设 备的供电电路。
供电电路实施例一：
本申请实施例中不限定终端设备的具体类型，可以为使用电池供电的任何设备，例如手机、笔记本电脑、可穿戴电子设备(如智能手表)、平板电脑、增强现实(augmented reality，AR)\虚拟现实(virtual reality，VR)设备、车载电脑设备等。
以下场景将造成电池(VBAT)端的电压VB跌落，例如终端设备为手机，拍照时需要消耗大电流，导致VB急剧下降，严重时手机没有提示电量低而瞬间关机，这样将降低用户体验。另外，由于电池存在内阻，电池内阻会随着温度降低而变大。因此当环境温度较低或电池温度较低时，电池内阻增加，进而造成VB下降，引起手机关机或者重启。
为了解决以上终端设备异常关机或者重启的问题，本申请实施例提供一种终端设备的供电电路。在终端设备增加了升压电路，当确定采样温度低于预设温度值和/或电池的输出电压低于预设电压值时，控制所述升压电路工作；当所述升压电路的输出电压小于所述升压电路的输入电压时，控制所述电池芯片和所述升压电路同时为所述负载供电；所述采样温度为终端设备温度或电池温度。因此，本申请实施例提供的供电电路，可以在终端设备温度较低和/或电池的输出电压较低时，将电池的输出电压升高后提供给负载。这样满足负载用电的需要，避免负载需要大电流时引起的异常关机或重启。而且，即使升压电路在工作时可能随着负载需要的电流增大，将拉低升压电路的输出电压，而对于这种情况，本申请的供电电路能够控制电池芯片和升压电路均为负载供电，即两路供电通路均导通，两路的电流共同提供给负载，由此可以增加供电电流，满足负载大电流的需求。从而在负载需要大电流时，终端设备不会异常关机，继续可以正常使用，进而提高用户体验。
参见图1，该图为本申请实施例提供的一种终端设备供电电路示意图。
本申请实施例提供的终端设备供电电路，包括：电池芯片100、升压电路300、控制器(图中未示出)和电源管理芯片200。
所述电池芯片100的电池端VBAT连接电池BAT的正极，所述电池芯片100的电能输出端VSYS连接负载，例如连接片上系统SOC和其他负载。VBAT的电压记为VB。
所述升压电路300的输入端连接所述电池BAT的正极，所述升压电路300的输出端连接所述负载，即升压电路300的输出端与电池芯片100的电能输出端VSYS连接在一起。
所述电池芯片100可以将电池的输出电压提供给负载。
另外，电池芯片100主要是对电池BAT进行充放电控制，一般可以利用开关电源来实现。例如，充电电源端VCHG对BAT进行充电时，电池芯片100控制开关管Q1、Q2、Q3和Q4均闭合。
BAT对负载提供电能时，Q4闭合，BAT通过Q4给电池芯片100的电能输出端VSYS供电，对应的供电电压记为VS。电源管理芯片200对VSYS的电能进行转换后为负载供电，负载包括片上系统(SOC，System-On-a-Chip)和其他负载。
电源管理芯片200检测VS的大小，当判断VS低于设定关机阈值或低于低电压锁定(UVLO，Under Voltage Lock Out)电压时会触发终端设备关机或重启。
所述控制器，用于当采样温度小于预设温度值和/或电池的输出电压小于第一预设电压 值时，控制所述升压电路300工作，且控制所述电池芯片100停止为负载供电；即将电池的输出电压通过升压电路300提供给负载。并且，当所述升压电路300的输出电压小于所述升压电路300的输入电压时，控制所述电池芯片100和所述升压电路300同时为所述负载供电；所述采样温度为终端设备的温度或电池的温度。
所述升压电路300可以为能够实现升压功能的电路，例如可以为Boost电路或电荷泵电路。需要说明的是，升压电路300能够将输入的电压升高后再提供出去。但是升压电路并不是一定要将输入的电压进行升高，也可以不进行升压而只是透传。即，电池的输出电压经过升压电路后可以电压不变，也可以电压升高。例如：设置升压电路300的输出电压为V0，当升压电路300的输入电压小于V0时，升压电路300将输入电压升高至V0然后输出；当升压电路300的输入电压大于V0时，升压电路300透传该电压，即输入电压经过升压电路300输出时，电压不变。
采样温度可以通过温度传感器获得。温度传感器可以采集终端设备的温度或者电池的温度。例如，终端设备为手机，温度传感器采集手机的温度时可以设置在手机上的任何位置。温度传感器采集电池的温度，可以设置在手机上靠近电池的位置。
由于温度较低或者电池的输出电压较低均有可能引起终端设备异常关机，因此，控制器控制升压电路工作的触发条件可以为其中的一种。即温度较低时，启动升压电路工作，或者，电池的输出电压较低时，启动升压电路工作。另外，为了避免频繁启动升压电路，也可以温度较低且电池的输出电压较低时，才启动升压电路工作。
升压电路300的作用是能够将输入电压进行升压后输出。由于升压电路300的输入端连接电池BAT的正极，即升压电路300能够将电池的输出电压升高后输出给负载。
升压电路300工作时，如果终端设备运行过程中出现较大的脉冲电流，会导致升压电路300的输出电压出现较大跌落，即所述升压电路300的输出电压小于所述升压电路300的输入电压。此时，可以控制电池芯片100和升压电路300同时为负载供电，增大供电电流和供电电压。以避免终端设备在出现较大脉冲电流时异常关机。
若触发升压电路启动工作的条件是采样温度小于预设温度值，则当采样温度大于等于预设温度值时，升压电路不工作，仅由电池芯片100给负载供电。即当采样温度大于等于预设温度值时，控制Q4导通，且控制升压电路不工作，仅由电池芯片100给负载供电。
若触发升压电路启动工作的条件是电池的输出电压小于第一预设电压值，则当电池的输出电压大于等于第一预设电压值时，升压电路不工作，仅由电池芯片100给负载供电。即，当电池的输出电压大于等于第一预设电压值时，控制Q4导通，且控制升压电路不工作，仅由电池芯片100给负载供电。
若触发升压电路启动工作的条件是采样温度小于预设温度值、且电池的输出电压小于第一预设电压值，则当采用温度大于等于预设温度值，或，电池的输出电压大于等于第一预设电压值时，升压电路不工作，仅由电池芯片100给负载供电。
供电电路实施例二：
本实施例中介绍通过电压比较电路比较升压电路的输入电压和输出电压。
参见图2，该图为本申请实施例提供的另一种终端设备供电电路示意图。
本实施例提供的终端设备供电电路，包括图1所述的供电电路，并且还包括：电压比较电路101。
所述控制器，还用于控制所述升压电路300工作时，控制所述电压比较电路101工作。即只有升压电路300工作时，电压比较电路101才需要工作。
所述电压比较电路101，用于将所述升压电路300的输出电压与所述升压电路300的输入电压进行比较，判断所述升压电路300的输出电压小于所述升压电路300的输入电压时，发送触发信号给所述控制器。或者，当升压电路300的输出电压小于输入电压且两者的差值超过第一阈值时，所述电压比较电路101才发送触发信号给所述控制器。
电压比较电路101能够获得升压电路300的输出电压与输入电压的差值。
电压比较电路101可以采用实现以上功能的任何电路或者芯片均可。例如，电压比较电路101可以通过比较器和外围搭建电阻来实现，利用不同阻值的电阻实现以上差值的计算。
所述控制器，还用于收到电压比较电路101发送的所述触发信号时，控制所述电池芯片100和所述升压电路300同时为所述负载供电。即控制Q4导通，且控制升压电路300继续工作。
为了保证不频繁控制电池芯片100的供电状态，以及提高抗干扰能力，本实施例中利用电压比较电路101实现是否触发电池芯片100和升压电路300同时为负载供电。电压比较电路101只有升压电路300的输出电压小于所述升压电路300的输入电压时，才发送触发信号给所述控制器。或者，电压比较电路101只有升压电路300的输出电压小于所述升压电路300的输入电压且两者电压差值超过第一阈值时，才发送触发信号给所述控制器。
第一阈值可以根据需要来设置，例如第一阈值的选取可以从以下取值范围50mV-100mV来选取。
电池芯片100是否为负载供电可以通过控制电池芯片100内部开关管的开关状态来实现，如图3所示，电池芯片包括：开关管Q4。
所述开关管Q4的第一端连接所述电池芯片100的电池端VBAT，所述开关管Q4的第二端连接所述电池芯片100的电能输出端VSYS。
所述控制器控制所述电池芯片100为负载供电，具体为：所述控制器控制所述开关管Q4闭合。
由于所述电池芯片100的电池端VBAT和电能输出端VSYS之间连接Q4，因此，当Q4闭合时，VBAT端和VSYS端接通，因此BAT的输出电压通过VBAT、Q4和VSYS提供给负载；当Q4断开时，电池芯片100给负载的供电通路断开。
Q4为可控开关管，即通过控制Q4控制端的电平的高低便可以控制其开关状态，例如高电平时，Q4导通，低电平时Q4断开。Q4的类型本申请实施例中不做具体限定，例如可以为MOS管、IGBT管或BJT管等。
如图2所示，所述电压比较电路101可以内置于所述电池芯片100。
或，如图3所示，所述电压比较电路101可以设置于所述电池芯片100之外。
控制器可以由终端设备的片上系统SOC来实现。当然控制器也可以独立于SOC独立设置。
如图3所示，以控制器由SOC来实现。SOC可以控制升压电路300工作。例如升压电路300具有使能管脚，该使能管脚可以为高电平有效。当SOC需要启动升压电路300时，向升压电路300的使能管脚发送高电平信号，则升压电路300启动进行工作。反之如果SOC没有向升压电路300的使能管脚发送高电平信号，则升压电路300的使能管脚默认低电平，则不工作。并且，当SOC收到电压比较电路101发送的触发信号时，会控制Q4导通，使电池芯片100和升压电路300同时为负载供电。具体地，SOC可以向电池芯片100发送控制信号，以使电池芯片100控制Q4导通。
同理，如图4所示，比较电路101内置于电池芯片100内部，控制器由片上系统SOC来实现。
本实施例中，控制器，还用于检测充电器插入终端设备时，控制所述电池芯片100为负载供电，并且控制所述升压电路300停止工作。
检测充电器插入终端设备时，由于可以通过外界电源给电池充电，电池的电量将逐渐升高，电池的输出电压也将逐渐升高，因此，升压电路300可以停止工作，由电池芯片100工作为负载提供供电通路。当充电器插入终端设备时，负载将由外界电源直接供电。
另外，当控制器判断当采样温度小于预设温度值和/或电池的输出电压小于第一预设电压值时，控制所述升压电路300工作，且控制所述电池芯片100停止为负载供电之后，控制器还用于当终端设备的屏幕熄灭且所述电池的输出电压大于第二预设电压值时，控制所述升压电路的输出电压小于或等于所述电池的输出电压，再控制所述电池芯片为负载供电，然后控制所述升压电路停止工作。
所述第二预设电压值小于所述第一预设电压值。
第一预设电压值例如为3.6V，第二预设电压值例如为3.3V。
终端设备的屏幕熄灭时，需求电量将下降。因此电池的输出电压即使小于第一预设电压值，但只要大于第二预设电压值，就可以控制升压电路300停止工作，由电池芯片100工作为负载提供供电通路。
控制器，还用于当所述终端设备的屏幕熄灭且所述电池的输出电压小于或等于所述第二预设电压值时，控制所述升压电路工作。即使终端设备的屏幕熄灭需求电量降低，但是电池的输出电压小于或等于第一预设电压值时也需要升压电路工作，否则也会引起终端设备关机或重启。
另外，控制器，还用于当所述电池的输出电压小于或等于第三预设电压值时，控制所述终端设备关机；所述第三预设电压值小于所述第二预设电压值。
例如，第三预设电压值为3V。此时电池的输出电压小于或等于3V，说明电池电量已经很低，电池的电量不足以维持终端设备的正常工作，终端设备需要关机。
需要说明的是，以上实施例中的第一预设电压值、第二预设电压值和第三预设电压值的大小关系为依次减小，但是具体选择的电压数值可以根据终端设备的类型以及电池的类型来选择，本实施例中不做具体限定。
当终端设备由电池芯片提供供电通路刚切换为升压电路提供供电通路时，如果升压电路的输出电压较高，但电池芯片提供的供电通路还没有断开，则较高的输出电压可能会倒灌进电池芯片。为了避免出现这样的倒灌，控制器控制所述升压电路开始工作且控制所述电池芯片停止为负载供电，具体可以包括：
先控制所述升压电路的输出电压小于或等于所述电池的输出电压，再控制所述电池芯片停止为负载供电，然后控制所述升压电路的输出电压为第四预设电压值。
所述第四预设电压值小于所述第一预设电压值。
其中，第四预设电压值可以与第二预设电压值相等，例如均为3.3V。第四预设电压值也可以与第二预设电压值不相等，具体可以根据实际需要来设置。
为了能够在电池电压较低时及时开启升压电路，需要在电池的输出电压小于第一预设电压值时，便开启升压电路。其中，本申请实施例中的开启升压电路，可以理解为使能升压电路。如果当电池的输出电压降低到第四预设电压值时才开启升压电路，将造成供电延迟。第四预设电压值一般是负载需要的标准电压，而电池随着供电时间延长其输出电压会逐渐降低。开启升压电路后，如果电池的输出电压(即升压电路的输入电压)大于所述第四预设电压值，则所述升压电路不对电池的输出电压进行升压，而是透传该电池的输出电压；此时，升压电路实际输出的电压是大于所述第四预设电压值的。当电池的输出电压小于所述第四预设电压值之后，所述升压电路将电池的输出电压升压至所述第四预设电压值，然后输出；此时，升压电路实际输出的电压等于所述第四预设电压值。
其中控制升压电路的输出电压小于电池的输出电压具体可以为升压电路的输出电压等于电池的输出电压减去预设门限值，例如预设门限值可以取值为150mV。预设门限值的具体取值本实施例中不做具体限定，可以根据电池芯片的类型来进行选取。
该供电电路还可以包括：电源管理芯片200；
所述电源管理芯片200，用于判断所述采样温度小于预设温度值和/或电池的输出电压小于第一预设电压值，并将判断结果发送给所述控制器。
即由电源管理芯片200来判断温度是否较低以及电池的输出电压是否较低。
电源管理芯片200可以包括直流-直流转换DC-DC电路和低压差线性稳压器(LDO，Low Dropout Regulator)。LDO用于将电压进行稳定后提供给SOC，对于采用VSYS端电压VS直接供电的LDO，例如内嵌多媒体卡(eMMC，Embedded Multi Media Card)的供电电源，利用本申请实施例提供的供电电路，不会出现由于VSYS端电压跌落导致LDO输出电压跌落的问题，进一步提高LDO供电的可靠性。在保证LDO供电可靠性的前提下，不需要在LDO输入端再增加Buck-Boost电路或Boost等电路，降低了整个供电电路的成本。
本实施例提供的供电电路，可以利用终端设备已有的电池芯片中的开关管Q4，通过控制Q4的开关状态进而控制电池芯片的供电通路，而升压电路的供电通路可以通过终端设备已有的SOC来控制，这样在现有终端设备的硬件设施基础上，仅增加了一个升压电路，成本低，对于硬件改动较小，利用该技术方案的推广应用。
本实施例提供的供电电路中电池芯片和升压电路均提供供电通路需要主动控制，例如需要控制电池芯片100中的开关管Q4闭合。而且当电池的输出电压较高，即不需要升压 电路工作时，也需要控制升压电路停止工作。下面提供另一种实现方式，可以控制升压电压是否将电池的输出电压进行升压后输出，而且当需要提供两路供电通路时，也不需要控制Q4闭合，而自动实现两路通电通路的导通。
以上实施例提供的供电电路，需要控制器控制电池芯片和升压电路的工作状态，下面提供一种供电电路，可以自动根据电池的输出电压的高低切换供电通路，不需要进行控制，简单方便，进一步降低了控制成本。本实施例中的升压电路与以上两个实施例中的升压电路的区别是多了旁路电路。
供电电路实施例三：
参见图5，该图为本申请实施例提供的再一种终端设备供电电路示意图。
本实施例提供的终端设备的供电电路，包括：自带旁路电路的升压电路400、电池芯片100和控制器。
所述电池芯片100的电池端VBAT连接电池BAT的正极，所述电池芯片100的电能输出端VSYS连接负载；所述电池芯片100，用于将电池BAT的输出电压提供给负。
所述自带旁路的升压电路400包括：升压电路和旁路电路。所述升压电路的输入端连接所述电池的正极，所述升压电路的输出端连接所述负载。所述旁路电路的第一端连接所述升压电路的输入端，所述旁路电路的第二端连接所述升压电路的输出端。所述升压电路和旁路电路的导通状态互补。
其中，导通状态互补是指，当升压电路导通时，旁路电路不导通；当旁路电路导通时，升压电路不导通。但是不导通的状态不互补，即升压电路和旁路电路可以同时均不导通。
所述控制器，用于当采样温度小于预设温度值和/或电池的输出电压小于第一预设电压值时，控制所述升压电路工作且控制所述电池芯片停止为负载供电；当所述升压电路的输出电压小于所述升压电路的输入电压时，所述旁路电路自动导通为所述负载供电；所述采样温度为终端设备的温度或电池的温度。
升压电路工作时，如果终端设备运行过程中出现较大的脉冲电流，会导致升压电路的输出电压出现较大跌落，即所述升压电路的输出电压小于所述升压电路的输入电压，此时由于旁路电路的输入电压高于输出电压，因此旁路电路将自动导通，从而增大供电电流和供电电压。以避免终端设备在出现较大脉冲电流时异常关机。旁路电路导通时升压电路将自动断开。
具体地，旁路电路可以由专门的芯片来实现，即该芯片即包括升压电路又包括旁路电路。
当然也可以通过搭建升压电路和旁路电路来实现，例如，升压电路的输入端和输出端并联一个二极管，即二极管的阳极连接升压电路的输入端，二极管的阴极连接升压电路的输出端，利用二极管正向导通，反向截止的基本属性，当升压电路的输入电压大于输出电压，且电压差超过二极管自身PN结压降时，二极管便导通。当二极管导通时，升压电路便被旁路掉，即电池的输出电压经过二极管直接输出到VSYS端，而不再经过升压电路。
当升压电路的输入电压小于或等于输出电压时，升压电路工作，将电池的输出电压升 压后提供给VSYS端，此时升压后的电压大于电池的输出电压，因此，相当于VSYS端电压VB高于VBAT端电压VS，因此，二极管反向截止，不导通，即电池的输出电压不经过二极管所在的支路。
当触发升压电路启动工作的条件是采样温度小于预设温度值，则当采用温度大于等于预设温度值时，则升压电路不工作，仅由电池芯片100给负载供电。
当触发升压电路启动工作的条件是电池的输出电压小于第一预设电压值，则当电池的输出电压大于等于第一预设电压值时，则升压电路不工作，仅由电池芯片100给负载供电。
当触发升压电路启动工作的条件是采样温度小于预设温度值且电池的输出电压小于第一预设电压值，则当采用温度大于等于预设温度值，或，电池的输出电压大于等于第一预设电压值时，则升压电路不工作，仅由电池芯片100给负载供电。
本实施例提供的供电电路，在终端设备增加了自带旁路电路的升压电路400，当确定采样温度低于预设温度值和/或电池的输出电压低于预设电压值时，控制所述升压电路工作；当所述升压电路的输出电压小于所述升压电路的输入电压时，所述旁路电路自动导通为所述负载提供供电通路。因此，本申请实施例提供的供电电路，可以在终端设备温度较低和/或电池的输出电压较低时，将电池的输出电压升高后提供给负载，这样满足负载用电的需要，避免负载需要大电流时引起的异常关机或重启，而且即使升压电路在工作，可能随着负载用电时存在大的脉冲电流，将拉低升压电路的输出电压，此时由于升压电路的输出电压降低且低于输入电压，此时旁路电路自动导通，满足负载的大电流需求。从而在负载需要大电流时，终端设备不会异常关机，继续可以正常使用，进而提高用户体验。
电源管理芯片200可以包括直流-直流转换DC-DC电路和低压差线性稳压器(LDO，Low Dropout Regulator)。LDO用于将电压进行稳定后提供给SOC，对于采用VSYS端电压VS直接供电的LDO，例如内嵌多媒体卡(eMMC，Embedded Multi Media Card)的供电电源，利用本申请实施例提供的供电电路，不会出现由于VSYS端电压跌落导致LDO输出电压跌落的问题，进一步提高LDO供电的可靠性。在保证LDO供电可靠性的前提下，不需要在LDO输入端再增加Buck-Boost电路或Boost等电路，降低了整个供电电路的成本。
供电电路实施例四：
参见图6，该图为本申请实施例提供的另一种终端设备的供电电路示意图。
控制器可以由终端设备的片上系统SOC来实现。当然控制器也可以独立于SOC独立设置。
如图6所示，以控制器由SOC来实现，SOC用于控制自带旁路电路的升压电路400工作，例如自带旁路电路的升压电路400具有使能管脚，该使能管脚可以为高电平有效，当SOC需要启动自带旁路电路的升压电路400时，向自带旁路电路的升压电路400的使能管脚发送高电平信号，则自带旁路电路的升压电路400启动进行工作。反之如果SOC没有向自带旁路电路的升压电路400的使能管脚发送高电平信号，则自带旁路电路的升压电路400的使能管脚默认低电平，则不工作。
本实施例提供的供电电路不需要电压比较电路，而是在VSYS端的电压VS小于VBAT 端的电压VB时，升压电路工作导通，反之旁路电路导通。即一旦自带旁路电路的升压电路400被使能，升压电路和旁路电路之间的导通状态可以根据输入端和输出端的电压自动切换，不需要进行控制。
当终端设备由电池芯片提供供电通路刚切换为升压电路提供供电通路时，如果升压电路的输出电压较高，但电池芯片提供的供电通路还没有断开，则较高的输出电压可能会倒灌进电池芯片。为了避免出现这样的倒灌，控制器控制所述升压电路开始工作且控制所述电池芯片停止为负载供电，具体可以包括：
先控制所述升压电路的输出电压小于或等于所述电池的输出电压，再控制所述电池芯片停止为负载供电，然后控制所述升压电路的输出电压为第四预设电压值。
所述第四预设电压值小于所述第一预设电压值。
其中，第四预设电压值可以与第二预设电压值相等，例如均为3.3V。第四预设电压值也可以与第二预设电压值不相等，具体可以根据实际需要来设置。
为了能够在电池电压较低时及时开启升压电路，需要在电池的输出电压小于第一预设电压值时，便开启升压电路。如果等待电池的输出电压等于第四预设电压值时才开启升压电路，将造成供电延迟。第四预设电压值一般是负载需要的标准电压，而电池随着供电时间延长其输出电压会逐渐降低。升压电路开启后，当电池的输出电压高于升压电路的输出电压时，旁路电路被导通，而升压电路不供电，此时负载由电池供电，直至电池的输出电压小于第四预设电压值时，升压电路才供电。
设备实施例：
基于以上实施例提供的一种供电电路，本申请实施例还提供一种终端设备，该终端设备可以为手机、IPAD等移动终端设备，也可以为利用电池作为电源的其他固定终端设备。该终端设备包括以上任意实施例提供的供电电路。所述供电电路，用于将所述电池的电能提供给所述终端设备中的负载。
当确定采样温度低于预设温度值和/或电池的输出电压低于预设电压值时，控制所述升压电路工作；当所述升压电路的输出电压小于所述升压电路的输入电压时，所述旁路电路自动导通为所述负载提供供电通路；所述采样温度为终端设备温度或电池温度。因此，本申请实施例提供的供电电路，可以在终端设备温度较低和/或电池的输出电压较低时，将电池的输出电压升高后提供给负载，这样满足负载用电的需要，避免负载需要大电流时引起的异常关机或重启。
方法实施例一：
基于以上各实施例提供的供电电路和终端设备，本申请实施例还提供一种终端设备的供电方法，下面结合附图进行详细介绍。
参见图7，该图为本申请实施例提供的一种终端设备的供电方式流程图。
本实施例提供的终端设备的供电方法，应用于供电电路。所述供电电路可以参见图1-图4所示的供电电路。
该方法包括：
S801：在终端设备运行过程中，可以实时监测终端设备的温度或电池的温度，和、或，也可以监测电池的输出电压，此时，Q4闭合，升压电路没有工作。
S802：当判断采样温度小于预设温度值和/或电池的输出电压小于第一预设电压值时，执行S803。即启动升压电路工作的触发条件可以仅判断温度、也可以仅判断电压，也可以既判断温度又判断电压。
例如，在Q4导通供电过程中，当仅监测温度时，可以判断温度小于预设温度值时，启动升压电路，当升压电路为Boost电路时，即使能Boost电路，Boost电路的芯片具有使能管脚。在Q4导通供电过程中，当既判断温度又判断电压时，可以判断温度小于预设温度值时，再判断电压也小于第一预设电压值时，启动升压电路。或者，也可以先判断电压再判断温度，本申请实施例并不限定判断电压和温度的时机。
预设温度可以根据终端设备所处的具体环境进行设置，例如可以设置为0摄氏度。第一预设电压值可以根据终端设备的类型来设置，例如可以设置为3.6V。
S803：控制所述升压电路工作且控制所述电池芯片停止为负载供电；具体可以为：先控制所述升压电路的输出电压小于或接近(例如等于或稍大于)所述电池的输出电压，例如控制升压电路的输出电压为电池的输出电压减去阈值电压，该阈值电压可以根据需要选择，例如可以取值为150mV；或者，控制升压电路的输出电压等于电池的输出电压。再控制所述电池芯片停止为负载供电，然后控制所述升压电路的输出电压为第四预设电压值；所述第四预设电压值可以小于或等于所述第一预设电压值，并且所述第四预设电压值可以大于或等于所述电池当前的输出电压。第四预设电压值也可以根据实际需要选择，例如可以选择为3.3V。
此时终端设备由升压电路提供供电通路。
S804：检测是否有充电器插入所述终端设备，如果是，则执行S805。
S805：控制Q4闭合，即控制所述电池芯片为所述负载供电，且控制所述升压电路停止工作。此时终端设备由电池芯片为负载提供供电通路。
S806：当监测充电器拔出时，返回S801。
在S803之后还包括S807，即控制所述升压电路工作且所述电池芯片停止为负载供电之后还可以包括S807。
S807：判断所述终端设备是否屏幕熄灭且是否所述电池的输出电压大于第二预设电压值；如果屏幕熄灭且所述电池的输出电压大于第二预设电压值，则执行S808；如果屏幕没有熄灭，或者如果屏幕熄灭但所述电池的输出电压小于或等于第二预设电压值，则执行S809。需要说明的是，在S807中，如果判断终端设备的屏幕没有熄灭，则可以不用判断电池的输出电压是否大于第二预设电压值，而直接选择执行S809。
第二预设电压值可以根据实际需要来设置，例如可以选择为3.3V。
S808：控制所述升压电路的输出电压小于或等于所述电池的输出电压，再控制所述电池芯片为负载供电，即闭合Q4；然后控制所述升压电路停止工作，具体可以关闭升压电路的使能信号。此时终端设备由电池芯片提供供电通路。在该情况下，可以一直由电池芯片 提供供电通路，直至所述电池的输出电压小于或等于第三预设电压值时，控制所述终端设备关机；所述第三预设电压值小于所述第二预设电压值。也可以先由电池芯片提供供电通路，然后继续监测电池的输出电压，当电池的输出电压小于第二预设电压值时，可以再改由升压电路提供供电通路并断开电池芯片对负载的供电。
S809：终端设备继续由升压电压提供供电通路，直至所述电池的输出电压小于或等于第三预设电压值时，控制所述终端设备关机；所述第三预设电压值小于所述第二预设电压值。
第三预设电压值可以根据实际需要来设置，例如可以选择为3V，即当电池的输出电压小于或等于3V时，控制终端设备关机。
以上各个预设电压值以及阈值可以根据实际需要来选择，本申请以上实施例中的取值仅是举例说明，可以有多种变形。
方法实施例二：
参见图8，该图为本申请实施例提供的又一种终端设备的供电方法流程图。
本实施例提供的终端设备的供电方法，应用于供电电路，所述供电电路可以参见图5和图6所示的供电电路。
该方法包括：
S901：当采样温度小于预设温度值和/或电池的输出电压小于第一预设电压值时，控制所述升压电路工作且控制所述电池芯片停止为负载供电；
S902：当所述升压电路的输出电压小于所述升压电路的输入电压时，所述旁路电路自动导通为所述负载供电；所述采样温度为终端设备的温度或电池的温度。
另外，还包括：检测充电器插入终端设备时，控制所述电池芯片为负载供电，控制所述升压电路停止工作。
当终端设备的屏幕熄灭且所述电池的输出电压大于第二预设电压值时，控制所述升压电路的输出电压小于或等于所述电池的输出电压，再控制所述电池芯片为负载供电，然后控制所述升压电路停止工作；
所述第二预设电压值小于所述第一预设电压值。
当所述终端设备屏幕熄灭且所述电池的输出电压小于或等于所述第二预设电压值时，控制所述升压电路工作。
当所述电池的输出电压小于或等于第三预设电压值时，控制所述终端设备关机；
所述第三预设电压值小于所述第二预设电压值。
控制升压电路工作且控制所述电池芯片停止为负载供电，具体可以包括：
先控制所述升压电路的输出电压小于或接近(例如等于或稍大于)所述电池的输出电压，再控制所述电池芯片停止为负载供电，然后控制所述升压电路的输出电压为第四预设电压值；
所述第四预设电压值小于所述第一预设电压值。
以上所述，以上实施例仅用以说明本申请的技术方案，而非对其限制；尽管参照前述 实施例对本申请进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例技术方案的精神和范围。

Claims (25)

  1. 一种终端设备的供电电路，其特征在于，包括：升压电路、电池芯片和控制器；
    所述电池芯片的电池端连接电池的正极，所述电池芯片的电能输出端连接负载；所述电池芯片，用于将电池的输出电压提供给所述负载；
    所述升压电路的输入端连接所述电池的正极，所述升压电路的输出端连接所述负载；所述升压电路能够将输入的电压进行升压后输出；
    所述控制器，用于当采样温度小于预设温度值和/或电池的输出电压小于第一预设电压值时，控制所述升压电路工作且控制所述电池芯片停止为负载供电；当所述升压电路的输出电压小于所述升压电路的输入电压时，控制所述电池芯片和所述升压电路同时为所述负载供电；所述采样温度为终端设备的温度或电池的温度。
  2. 根据权利要求1所述的电路，其特征在于，还包括：电压比较电路；
    所述控制器，还用于控制所述升压电路工作时，控制所述电压比较电路工作；
    所述电压比较电路，用于将所述升压电路的输出电压与所述升压电路的输入电压进行比较，判断所述升压电路的输出电压小于所述升压电路的输入电压时，发送触发信号给所述控制器；
    所述控制器，还用于收到所述触发信号时，控制所述电池芯片和所述升压电路同时为所述负载供电。
  3. 根据权利要求2所述的电路，其特征在于，所述电压比较电路内置于所述电池芯片，或，所述电压比较电路设置于所述电池芯片之外。
  4. 根据权利要求2所述的电路，其特征在于，所述电池芯片包括：开关管；
    所述开关管的第一端连接所述电池芯片的电池端，所述开关管的第二端连接所述电池芯片的电能输出端；
    所述控制器控制所述电池芯片为负载供电，具体为：所述控制器控制所述开关管闭合。
  5. 根据权利要求1-4任一项所述的电路，其特征在于，所述控制器，还用于检测充电器插入所述终端设备时，控制所述电池芯片为所述负载供电，且控制所述升压电路停止工作。
  6. 根据权利要求1-4任一项所述的电路，其特征在于，所述控制器，还用于在控制所述升压电路工作且所述电池芯片停止为负载供电之后，当所述终端设备的屏幕熄灭且所述电池的输出电压大于第二预设电压值时，控制所述升压电路的输出电压小于或等于所述电池的输出电压，再控制所述电池芯片为负载供电，然后控制所述升压电路停止工作；
    所述第二预设电压值小于所述第一预设电压值。
  7. 根据权利要求6所述的电路，其特征在于，所述控制器，还用于在控制所述升压电路停止工作之后，当所述终端设备屏幕熄灭且所述电池的输出电压小于或等于所述第二预设电压值时，控制所述升压电路工作且控制所述电池芯片停止为负载供电。
  8. 根据权利要求6或7所述的电路，其特征在于，所述控制器，还用于当所述电池的输出电压小于或等于第三预设电压值时，控制所述终端设备关机；
    所述第三预设电压值小于所述第二预设电压值。
  9. 根据权利要求1所述的电路，其特征在于，所述控制器，控制所述升压电路工作且控制所述电池芯片停止为负载供电，具体包括：
    先控制所述升压电路的输出电压小于或等于所述电池的输出电压，再控制所述电池芯片停止为负载供电，然后控制所述升压电路的输出电压为第四预设电压值；
    所述第四预设电压值小于所述第一预设电压值。
  10. 根据权利要求1-4任一项所述的电路，其特征在于，所述升压电路为Boost电路或电荷泵电路。
  11. 根据权利要求1-4任一项所述的电路，其特征在于，还包括：电源管理芯片；
    所述电源管理芯片，用于判断所述采样温度小于预设温度值和/或电池的输出电压小于第一预设电压值，并将判断结果发送给所述控制器。
  12. 根据权利要求1-4任一项所述的电路，其特征在于，所述控制器由终端设备的片上系统来实现。
  13. 一种终端设备的供电电路，其特征在于，包括：升压电路、电池芯片和控制器；
    所述电池芯片的电池端连接电池的正极，所述电池芯片的电能输出端连接负载；所述电池芯片，用于将电池的输出电压提供给所述负载；
    所述升压电路自带旁路电路；所述升压电路的输入端连接所述电池的正极，所述升压电路的输出端连接所述负载；所述升压电路能够将输入的电压进行升压后输出；所述旁路电路的第一端连接所述升压电路的输入端，所述旁路电路的第二端连接所述升压电路的输出端；所述升压电路和旁路电路的导通状态互补；
    所述控制器，用于当采样温度小于预设温度值和/或电池的输出电压小于第一预设电压值时，控制所述升压电路工作且控制所述电池芯片停止为负载供电；当所述升压电路的输出电压小于所述升压电路的输入电压时，所述旁路电路自动导通为所述负载供电；所述采样温度为终端设备的温度或电池的温度。
  14. 根据权利要求13所述的电路，其特征在于，所述控制器，还用于检测充电器插入所述终端设备时，控制所述电池芯片为所述负载供电，且控制所述升压电路停止工作。
  15. 根据权利要求13或14所述的电路，其特征在于，所述控制器，还用于在控制所述升压电路工作且所述电池芯片停止为负载供电之后，当所述终端设备屏幕熄灭且所述电池的输出电压大于第二预设电压值时，控制所述升压电路的输出电压小于或等于所述电池的输出电压，再控制所述电池芯片为负载供电，然后控制所述升压电路停止工作；
    所述第二预设电压值小于所述第一预设电压值。
  16. 根据权利要求15所述的电路，其特征在于，所述控制器，还用于在控制所述升压电路停止工作之后，当所述终端设备的屏幕熄灭且所述电池的输出电压小于或等于所述第二预设电压值时，控制所述升压电路工作且控制所述电池芯片停止为负载供电。
  17. 根据权利要求15或16所述的电路，其特征在于，所述控制器，还用于当所述电池的输出电压小于或等于第三预设电压值时，控制所述终端设备关机；
    所述第三预设电压值小于所述第二预设电压值。
  18. 根据权利要求13所述的电路，其特征在于，所述控制器，控制所述升压电路工作 且控制所述电池芯片停止为负载供电，具体包括：
    先控制所述升压电路的输出电压小于或等于所述电池的输出电压，再控制所述电池芯片停止为负载供电，然后控制所述升压电路的输出电压为第四预设电压值；
    所述第四预设电压值小于所述第一预设电压值。
  19. 根据权利要求13所述的电路，其特征在于，所述升压电路为Boost电路或电荷泵电路。
  20. 根据权利要求13所述的电路，其特征在于，还包括：电源管理芯片；
    所述电源管理芯片，用于判断所述采样温度小于预设温度值和/或电池的输出电压小于第一预设电压值，并将判断结果发送给所述控制器。
  21. 根据权利要求13所述的电路，其特征在于，所述控制器由终端设备的片上系统来实现。
  22. 根据权利要求13所述的电路，其特征在于，所述升压电路和旁路电路的导通状态互补，具体包括：当升压电路导通时，旁路电路不导通；当旁路电路导通时，升压电路不导通。
  23. 一种终端设备，其特征在于，包括：电池、负载和权利要求1-22任一项所述的供电电路；
    所述供电电路，用于将所述电池的电能提供给所述负载。
  24. 一种终端设备的供电方法，其特征在于，应用于所述终端设备；所述终端设备包括电池、负载和供电电路；所述供电电路包括：升压电路、电池芯片和控制器；所述电池芯片的电池端连接所述电池的正极，所述电池芯片的电能输出端连接所述负载；所述电池芯片，用于将所述电池的输出电压提供给所述负载；所述升压电路的输入端连接所述电池的正极，所述升压电路的输出端连接所述负载；
    该方法包括：
    当采样温度小于预设温度值和/或电池的输出电压小于第一预设电压值时，所述控制器控制所述升压电路工作且控制所述电池芯片停止为负载供电，所述采样温度为所述终端设备的温度或电池的温度；
    在所述升压电路工作的过程中，当所述升压电路的输出电压小于所述升压电路的输入电压时，控制所述电池芯片和所述升压电路同时为所述负载供电。
  25. 一种终端设备的供电方法，其特征在于，应用于所述终端设备；所述终端设备包括电池、负载和供电电路；所述供电电路包括：升压电路、电池芯片和控制器；所述电池芯片的电池端连接所述电池的正极，所述电池芯片的电能输出端连接所述负载；所述电池芯片，用于将所述电池的输出电压提供给所述负载；所述升压电路的输入端连接所述电池的正极，所述升压电路的输出端连接所述负载；所述升压电路自带旁路电路；所述旁路电路的第一端连接所述升压电路的输入端，所述旁路电路的第二端连接所述升压电路的输出端；所述升压电路和旁路电路的导通状态互补；
    该方法包括：
    当采样温度小于预设温度值和/或电池的输出电压小于第一预设电压值时，所述控制器 控制所述升压电路工作且控制所述电池芯片停止为所述负载供电；
    在所述升压电路工作的过程中，当所述升压电路的输出电压小于所述升压电路的输入电压时，所述旁路电路自动导通为所述负载供电；所述采样温度为所述终端设备的温度或所述电池的温度。
PCT/CN2018/097431 2018-07-27 2018-07-27 一种终端设备的供电电路、终端设备及供电方法 Ceased WO2020019300A1 (zh)

Priority Applications (9)

Application Number Priority Date Filing Date Title
JP2021524083A JP7169444B2 (ja) 2018-07-27 2018-07-27 端末デバイスの電源回路、端末デバイス、及び電力供給方法
EP18928090.2A EP3800760B1 (en) 2018-07-27 2018-07-27 Power supply circuit of terminal device, terminal device and power supply method
PCT/CN2018/097431 WO2020019300A1 (zh) 2018-07-27 2018-07-27 一种终端设备的供电电路、终端设备及供电方法
CN201880071372.XA CN111316528B (zh) 2018-07-27 2018-07-27 一种终端设备的供电电路、终端设备及供电方法
EP23170332.3A EP4254720B1 (en) 2018-07-27 2018-07-27 Power supply circuit of terminal device, terminal device and power supply method
US17/259,045 US11949272B2 (en) 2018-07-27 2018-07-27 Power supply circuit of terminal device, terminal device, and power supply method
CN202211284671.6A CN115833298B (zh) 2018-07-27 2018-07-27 一种终端设备的供电电路、终端设备及供电方法
CN202211267625.5A CN115632454B (zh) 2018-07-27 2018-07-27 一种终端设备的供电电路、终端设备及供电方法
RU2021103291A RU2757198C1 (ru) 2018-07-27 2018-07-27 Схема подачи питания оконечного устройства, оконечное устройство и способ подачи питания

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2018/097431 WO2020019300A1 (zh) 2018-07-27 2018-07-27 一种终端设备的供电电路、终端设备及供电方法

Publications (1)

Publication Number Publication Date
WO2020019300A1 true WO2020019300A1 (zh) 2020-01-30

Family

ID=69181170

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2018/097431 Ceased WO2020019300A1 (zh) 2018-07-27 2018-07-27 一种终端设备的供电电路、终端设备及供电方法

Country Status (6)

Country Link
US (1) US11949272B2 (zh)
EP (2) EP4254720B1 (zh)
JP (1) JP7169444B2 (zh)
CN (3) CN115833298B (zh)
RU (1) RU2757198C1 (zh)
WO (1) WO2020019300A1 (zh)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113276160A (zh) * 2020-01-31 2021-08-20 精工爱普生株式会社 机器人、机器人搭载用移动体以及移动机器人
CN113448419A (zh) * 2021-05-22 2021-09-28 山东英信计算机技术有限公司 一种延长服务器掉电的系统和服务器
CN114518796A (zh) * 2020-11-20 2022-05-20 神讯电脑(昆山)有限公司 双向保护电路及具有双向保护电路的电子装置
CN114865804A (zh) * 2022-04-12 2022-08-05 荣耀终端有限公司 一种电子设备及智能功率放大器的供电方法
CN115208009A (zh) * 2022-07-07 2022-10-18 深圳拓邦股份有限公司 电池保护电路及电器
TWI805407B (zh) * 2022-01-12 2023-06-11 立錡科技股份有限公司 能減弱振鈴的升降壓切換式電源電路及其控制方法
CN116320113A (zh) * 2023-03-16 2023-06-23 维沃移动通信有限公司 电子设备
WO2023193646A1 (zh) * 2022-04-06 2023-10-12 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
EP4335013A4 (en) * 2021-05-08 2025-01-15 Harman International Industries, Incorporated Charging device for wearable device and wearable device assembly

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11652315B2 (en) * 2018-04-17 2023-05-16 Aptiv Technologies Limited Electrical power supply device
WO2020019300A1 (zh) 2018-07-27 2020-01-30 华为技术有限公司 一种终端设备的供电电路、终端设备及供电方法
CN113765177B (zh) * 2021-07-30 2024-06-11 华为数字能源技术有限公司 一种电池模块和充电系统
CN113937856B (zh) * 2021-10-16 2023-03-24 深圳市海曼科技股份有限公司 防止电池供电设备中单片机因降压而复位的系统及方法
CN118646109A (zh) * 2022-02-17 2024-09-13 荣耀终端有限公司 电子设备
CN116054300B (zh) * 2022-06-27 2023-10-20 荣耀终端有限公司 终端的供电电路、供电方法和终端
CN116634541B (zh) * 2023-07-19 2023-11-07 荣耀终端有限公司 一种供电电路、供电方法和电子设备
US20250260320A1 (en) * 2024-02-12 2025-08-14 Qualcomm Incorporated Power supply circuit with power supply rails independently monitored for load attacks
CN117879116B (zh) * 2024-03-11 2024-05-17 深圳市积加创新技术有限公司 一种基于电池电压调整输出驱动系统及方法
CN119182204A (zh) * 2024-11-22 2024-12-24 鼎道智芯(上海)半导体有限公司 充放电控制电路、方法、电源管理芯片及电子设备

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080054855A1 (en) * 2006-09-05 2008-03-06 Summit Microelectronics, Inc. Circuits and methods for controlling power in a battery operated system
US20100244797A1 (en) * 2009-03-31 2010-09-30 Katsuyuki Tabata Current limiting circuit
CN102543022A (zh) * 2010-12-30 2012-07-04 乐金显示有限公司 供电单元和包括所述供电单元的液晶显示器
CN103545865A (zh) * 2012-07-11 2014-01-29 三星电子株式会社 用于在移动终端中供电的设备和方法
CN204886326U (zh) * 2015-08-27 2015-12-16 广东小天才科技有限公司 一种提高电池可用容量电路

Family Cites Families (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6167289A (en) 1998-02-20 2000-12-26 Qualcomm Incorporated Power supply assembly for portable phone
JP2003189485A (ja) * 2001-12-11 2003-07-04 Sanyo Electric Co Ltd 携帯機器
JP2004312867A (ja) 2003-04-07 2004-11-04 Nec Tokin Corp 電池用電源回路および電池パック
EP1543599A1 (en) * 2003-08-05 2005-06-22 Matsushita Electric Industrial Co., Ltd. Direct-current power supply and battery-powered electronic apparatus equipped with the power supply
DE102004036814B4 (de) * 2004-07-29 2006-06-01 Siemens Ag Vorrichtung zur Versorgung einer Kraftstoffpumpe einer Brennkraftmaschine eines Kraftfahrzeuges mit elektrischem Strom
JP2006081369A (ja) * 2004-09-13 2006-03-23 Casio Comput Co Ltd 電子機器
US20060119322A1 (en) * 2004-12-04 2006-06-08 Hossein Maleki Battery pack with temperature activated boost
TW200950296A (en) * 2008-05-20 2009-12-01 Acbel Polytech Inc Switched power supply capable of raising light-load efficiency
US9240883B2 (en) 2008-09-04 2016-01-19 Intel Corporation Multi-key cryptography for encrypting file system acceleration
CN201349211Y (zh) 2008-12-16 2009-11-18 宇龙计算机通信科技(深圳)有限公司 一种移动终端的供电系统及移动终端
BRPI1010083A2 (pt) 2009-06-22 2016-03-15 Koninkl Philips Electronics Nv unidade de alimetação para alimentar um dispositivo operado eletricamente com energia elétrica e/ou sinal elétrico por meio de elementos conectores para um contato liberável de meios conectoresdedicados do dispositivo operado eletricamente, dispositivo operado eletricamente para cooperar com a unidade de alimentação, sistema elétrico e método para alimentar um dispositivo operado eletricamente com energia elétrica e/ou sinal elétrico por meio de elementos conctores para um contato liberável de meios conectores dedicados do dispositivo operado eletricamente
KR101097262B1 (ko) * 2009-12-28 2011-12-21 삼성에스디아이 주식회사 배터리 팩, 이의 충전방법
CN102496042A (zh) * 2011-12-21 2012-06-13 天龙智联(北京)科技有限公司 一种电子标签设备
JP5791007B2 (ja) * 2012-08-07 2015-10-07 ▲華▼▲為▼▲終▼端有限公司 電力供給の装置および方法ならびにユーザ装置
CN103872715A (zh) * 2012-12-14 2014-06-18 鸿富锦精密工业（深圳）有限公司 手持设备及其电源电路
JP6196466B2 (ja) 2013-05-10 2017-09-13 Fdk株式会社 電源装置
JP6152241B2 (ja) * 2014-04-23 2017-06-21 レノボ・シンガポール・プライベート・リミテッド 電力システム、携帯式電子機器および電力の供給方法
CN104009529B (zh) 2014-06-13 2016-08-24 南京矽力杰半导体技术有限公司 控制电路、电池供电装置和控制方法
CN105978055A (zh) * 2015-03-13 2016-09-28 苏州宝时得电动工具有限公司 电能提供装置及电能传输装置
CN106299548A (zh) * 2015-05-28 2017-01-04 西安中兴新软件有限责任公司 一种温度控制方法及装置
CN105337374A (zh) * 2015-12-04 2016-02-17 上海斐讯数据通信技术有限公司 一种提高供电时间的方法
CN107783580A (zh) 2016-08-26 2018-03-09 中兴通讯股份有限公司 一种电源供电控制电路及采用控制电路进行供电的方法
CN108267972B (zh) 2016-12-30 2021-08-03 北京小米移动软件有限公司 电子设备控制方法和装置
CN107359654A (zh) * 2017-06-01 2017-11-17 金卡智能集团股份有限公司 一种计量仪表无线通信装置电源控制系统
CN207098681U (zh) 2017-07-24 2018-03-13 杭州萤石网络有限公司 一种锂电池充放电保护电路
CN108258904A (zh) * 2017-12-01 2018-07-06 珠海格力电器股份有限公司 直流电源及其供电方法
WO2020019300A1 (zh) 2018-07-27 2020-01-30 华为技术有限公司 一种终端设备的供电电路、终端设备及供电方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080054855A1 (en) * 2006-09-05 2008-03-06 Summit Microelectronics, Inc. Circuits and methods for controlling power in a battery operated system
US20100244797A1 (en) * 2009-03-31 2010-09-30 Katsuyuki Tabata Current limiting circuit
CN102543022A (zh) * 2010-12-30 2012-07-04 乐金显示有限公司 供电单元和包括所述供电单元的液晶显示器
CN103545865A (zh) * 2012-07-11 2014-01-29 三星电子株式会社 用于在移动终端中供电的设备和方法
CN204886326U (zh) * 2015-08-27 2015-12-16 广东小天才科技有限公司 一种提高电池可用容量电路

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113276160A (zh) * 2020-01-31 2021-08-20 精工爱普生株式会社 机器人、机器人搭载用移动体以及移动机器人
CN114518796A (zh) * 2020-11-20 2022-05-20 神讯电脑(昆山)有限公司 双向保护电路及具有双向保护电路的电子装置
EP4335013A4 (en) * 2021-05-08 2025-01-15 Harman International Industries, Incorporated Charging device for wearable device and wearable device assembly
CN113448419A (zh) * 2021-05-22 2021-09-28 山东英信计算机技术有限公司 一种延长服务器掉电的系统和服务器
TWI805407B (zh) * 2022-01-12 2023-06-11 立錡科技股份有限公司 能減弱振鈴的升降壓切換式電源電路及其控制方法
WO2023193646A1 (zh) * 2022-04-06 2023-10-12 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
CN114865804A (zh) * 2022-04-12 2022-08-05 荣耀终端有限公司 一种电子设备及智能功率放大器的供电方法
WO2023197684A1 (zh) * 2022-04-12 2023-10-19 荣耀终端有限公司 一种电子设备及智能功率放大器的供电方法
US12395137B2 (en) 2022-04-12 2025-08-19 Honor Device Co., Ltd. Electronic device and power supply method for smart power amplifier
CN115208009A (zh) * 2022-07-07 2022-10-18 深圳拓邦股份有限公司 电池保护电路及电器
CN115208009B (zh) * 2022-07-07 2024-04-30 深圳拓邦股份有限公司 电池保护电路及电器
CN116320113A (zh) * 2023-03-16 2023-06-23 维沃移动通信有限公司 电子设备

Also Published As

Publication number Publication date
JP2021532724A (ja) 2021-11-25
EP3800760B1 (en) 2023-06-28
EP3800760A1 (en) 2021-04-07
CN115632454B (zh) 2023-10-13
CN115833298A (zh) 2023-03-21
RU2757198C1 (ru) 2021-10-12
CN115632454A (zh) 2023-01-20
CN111316528B (zh) 2022-11-01
JP7169444B2 (ja) 2022-11-10
EP4254720A2 (en) 2023-10-04
EP4254720B1 (en) 2024-10-23
EP4254720A3 (en) 2023-11-15
CN115833298B (zh) 2023-08-22
EP3800760A4 (en) 2021-12-01
CN111316528A (zh) 2020-06-19
US11949272B2 (en) 2024-04-02
US20210273475A1 (en) 2021-09-02

Similar Documents

Publication Publication Date Title
CN115632454B (zh) 一种终端设备的供电电路、终端设备及供电方法
US20120187897A1 (en) Battery charger for use with low voltage energy harvesting device
CN110429673A (zh) 一种终端设备的供电系统、方法、芯片及终端设备
US10277052B2 (en) Controlling power delivery to a battery
US20230344251A1 (en) Anti-backflow charging circuit and electronic device
TW200818656A (en) Power surge filtering in over-current and short circuit protection
US9244509B2 (en) Uninterruptible power system and power control system thereof
US20250030266A1 (en) Circuit, Power Supply Method, Electronic Device, and Computer Program Product
CN112311038A (zh) 一种充放电保护电路、终端设备及电池放电控制方法
CN110365082B (zh) 电源管理电路、电子设备及电源管理方法
CN105429246B (zh) 一种终端充满电后自动断开的电路和方法
CN110504738A (zh) 双电池切换方法、电路、移动终端及存储介质
TW201816607A (zh) 不斷電電腦系統
CN217467616U (zh) 电源控制电路和电子设备
CN103532212A (zh) 一种充电管理电路及移动电源
CN115549258A (zh) 充电电路、充电方法和电子设备
CN116667473A (zh) 一种控制电路、电路控制方法和电子设备
CN117335512A (zh) 充放电电路、充放电电池及电子设备
CN111030237B (zh) 移动电源及其工作方法
CN219067883U (zh) 供电控制模块、电池组和终端设备
US20040177282A1 (en) Method and circuit for controlling battery charge and supply by microprocessor
CN217590284U (zh) 一种低功耗移动电源控制电路及电子设备
CN203607908U (zh) 一种充电管理电路及移动电源
US20250105657A1 (en) Ultra-low temperature emergency starting power supply
CN115765057A (zh) 电池充电保护模组、系统、方法及终端设备

Legal Events

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

Ref document number: 18928090

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2021524083

Country of ref document: JP

Kind code of ref document: A

ENP Entry into the national phase

Ref document number: 2018928090

Country of ref document: EP

Effective date: 20201230

NENP Non-entry into the national phase

Ref country code: DE

ENP Entry into the national phase

Ref document number: 2018928090

Country of ref document: EP

Effective date: 20201230