[go: up one dir, main page]

WO2022199211A1 - Circuit de charge, puce de charge et dispositif électronique - Google Patents

Circuit de charge, puce de charge et dispositif électronique Download PDF

Info

Publication number
WO2022199211A1
WO2022199211A1 PCT/CN2022/070378 CN2022070378W WO2022199211A1 WO 2022199211 A1 WO2022199211 A1 WO 2022199211A1 CN 2022070378 W CN2022070378 W CN 2022070378W WO 2022199211 A1 WO2022199211 A1 WO 2022199211A1
Authority
WO
WIPO (PCT)
Prior art keywords
battery
voltage
switching element
control signal
circuit
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/CN2022/070378
Other languages
English (en)
Chinese (zh)
Inventor
邱钰鹏
周海滨
何忠勇
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.)
Honor Device Co Ltd
Original Assignee
Honor Device 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 Honor Device Co Ltd filed Critical Honor Device Co Ltd
Publication of WO2022199211A1 publication Critical patent/WO2022199211A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
    • H02J7/0014—Circuits for equalisation of charge between batteries
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • G01R31/396—Acquisition or processing of data for testing or for monitoring individual cells or groups of cells within a battery
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44—Methods for charging or discharging
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44—Methods for charging or discharging
    • H01M10/441—Methods for charging or discharging for several batteries or cells simultaneously or sequentially
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
    • H02J7/0014—Circuits for equalisation of charge between batteries
    • H02J7/0016—Circuits for equalisation of charge between batteries using shunting, discharge or bypass circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
    • H02J7/0014—Circuits for equalisation of charge between batteries
    • H02J7/0019—Circuits for equalisation of charge between batteries using switched or multiplexed charge circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/0036—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using connection detecting circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/007—Regulation of charging or discharging current or voltage
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
    • H02J7/00714—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery charging or discharging current
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
    • H02J7/007182—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/36—Arrangements using end-cell switching

Definitions

  • the present application relates to the technical field of charging and discharging of electronic devices, and in particular, to a charging circuit, a charging chip and an electronic device.
  • the dual-battery charging and discharging circuit can be divided into series charging and discharging (that is, two batteries are charged and discharged in series), series charging and discharging (that is, two batteries are charged and discharged in parallel), and parallel charging and discharging (that is, two batteries are charged and discharged in parallel).
  • the batteries are charged in parallel and discharged in parallel) in several different situations.
  • the series charge and series discharge loss is large.
  • Serial charging and discharging need to change the form of the dual batteries, and the control is complicated.
  • the control of parallel charging and discharging is simple and does not need to change the shape of the dual battery.
  • an embodiment of the present application provides a charging circuit.
  • the charging circuit includes a voltage converter, a controller, a first switching element and a second switching element.
  • the first end of the first switching element is used for coupling with the first battery, and the first end of the second switching element is used for coupling with the second battery.
  • the second terminal of the first switching element and the second terminal of the second switching element are each coupled to the first terminal of the voltage converter to charge the first battery and the second battery.
  • the second end of the voltage conversion circuit is used for coupling with the power adapter.
  • the controller is coupled to the first battery and the second battery to detect the voltage of the first battery and the voltage of the second battery, and output the first control signal and the second control signal according to the voltage difference between the first battery and the second battery.
  • the controller is also coupled to the first switching element for controlling the first switching element to be in an on state, a partial on state or an off state through the first control signal.
  • the controller is also coupled to the second switching element for controlling the second switching element to be in an on state, a partial on state or an off state through the second control signal.
  • the charging currents of the first battery and the second battery can be controlled respectively through the first switching element and the second switching element in the charging circuit, so as to avoid the first
  • the parameters of the battery and the second battery are inconsistent or the impedance of the charging path (such as the charging path formed by the charging circuit to the first battery) is unbalanced, resulting in a problem that a battery cannot be fully charged, so that the first battery and the second battery cannot be fully charged.
  • Both batteries can reach a fully charged state, so as to increase the available capacity of the battery in the electronic device and improve the use performance of the battery.
  • the first control signal is used to control the conduction of the first switching element to charge the first battery
  • the second control signal is used to control the incomplete conduction of the second switching element to charge the second battery.
  • the second switch element is equivalent to a variable resistance resistor, which can pull a larger current, so that the second battery can also be charged through the voltage converter, and the larger load can be pulled through the second switch element.
  • the current of the second battery is adjusted to increase the voltage of the second battery, so as to reduce the voltage difference between the first battery and the second battery.
  • the first control signal is used to control the first switching element to not be fully turned on, so that the first battery is voltage-regulated and charged; the second control signal is used to control the conduction of the second switching element to charge the second battery.
  • the first switching element is equivalent to a variable resistance resistor, which can pull a larger current, so that the charging circuit can charge the first battery through the voltage converter, and pull the load through the first switching element.
  • the voltage of the first battery is adjusted to increase the voltage of the first battery, so as to reduce the voltage difference between the first battery and the second battery.
  • the first control signal when the first battery and the second battery are in a charged state, if the voltage difference between the first battery and the second battery is less than or equal to a preset threshold, the first control signal is used to control the The first switching element is turned on to charge the first battery; the second control signal is used to control the conduction of the second switching element to charge the second battery.
  • the paths from the charging circuit to the first battery and the second battery are both open, and the charging circuit can respectively charge the first battery and the second battery through the voltage converter.
  • both the second terminal of the first switching element and the second terminal of the second switching element are also used for coupling with the working circuit, so as to discharge the first battery and the second battery.
  • the controller of the charging circuit is further used to detect the voltage of the first battery and the voltage of the second battery, and according to the first battery and the second battery The pressure difference outputs the first control signal and the second control signal.
  • the first control signal is also used to control the first switching element to be in an off state.
  • the second control signal is also used to control the second switching element to be in an off state.
  • the battery with a larger voltage among the first battery and the second battery may supply power to the working circuit first, and wait for the first battery and the second battery to supply power to the working circuit. After the voltage difference of the second battery is reduced, both the first battery and the second battery supply power to the working circuit, so as to avoid the large voltage difference between the first battery and the second battery, which may lead to high current mutual charging, burn the device or damage the battery The phenomenon.
  • the first control signal is used to control the first switching element to be turned on, so that the The first battery supplies power to the working circuit;
  • the second control signal is used to control the second switching element to be turned off, so that the second battery does not supply power to the working circuit.
  • the first control signal is used to control the first switching element to turn off, so that the first battery does not operate supply power to the working circuit;
  • the second control signal is used to control the conduction of the second switch element, so that the second battery supplies power to the working circuit.
  • the first control signal is used to control the conduction of the first switching element, so that the first battery supplies power to the working circuit; the second control signal is used to control the first switching element to be turned on. The two switching elements are turned on, so that the second battery supplies power to the working circuit.
  • the battery with a lower voltage among the first battery and the second battery can supply power to the working circuit first, while the first battery and the second battery are in a state of discharge.
  • the battery with the larger voltage in the second battery is in a voltage regulation state; when the voltage difference between the first battery and the second battery is reduced, both the first battery and the second battery supply power to the working circuit, so as to avoid the first battery and the second battery.
  • the voltage difference between the two batteries is large, which leads to a large current charging each other, resulting in the phenomenon of burning the device or damaging the battery.
  • the first control signal is used to control the first switching element not to be fully turned on , so that the first battery supplies power to the working circuit and regulates the voltage; the first control signal is used to control the conduction of the second switching element, so that the second battery supplies power to the working circuit.
  • the first control signal is used to control the conduction of the first switching element, so that the first battery is turned on.
  • the working circuit supplies power; the second control signal is used to control the second switching element not to be completely turned on, so that the second battery supplies power to the working circuit and regulates the voltage.
  • the first control signal is used to control the conduction of the first switching element, so that the first battery supplies power to the working circuit; the second control signal is used to control the first switching element to be turned on. The two switching elements are turned on, so that the second battery supplies power to the working circuit.
  • the controller includes a drive circuit and a voltage detection circuit; the voltage detection circuit is used for coupling with the first battery to detect the voltage of the first battery.
  • the voltage detection circuit is further coupled to the second battery to detect the voltage of the second battery.
  • the drive circuit is coupled to the voltage detection circuit for acquiring the voltage of the first battery and the voltage of the second battery.
  • the first output terminal of the driving circuit is used for outputting the first control signal, and is coupled with the control terminal of the first switching element.
  • the second output terminal of the driving circuit is used for outputting the second control signal and is coupled with the control terminal of the second switching element.
  • controller is implemented by hardware structures such as a drive circuit and a voltage detection circuit, and the response speed of the controller is faster, which can effectively avoid the instantaneous high current generated at the moment of switching the control signal. damage, thereby making the charging circuit more reliable.
  • the controller is further configured to connect to a communication control bus, and the communication control bus is used to control the controller to perform voltage detection and output the first control signal and the second control signal.
  • a communication control bus eg, I2C bus
  • the charging chip further includes a communication control interface, and the communication control interface is used for coupling the communication control bus and the controller.
  • an embodiment of the present application provides an electronic device.
  • the electronic device includes a first battery, a second battery, a working circuit, and a charging chip in any possible implementation manner of the above second aspect.
  • the first battery is coupled with the third interface of the charging chip to supply power to the working circuit.
  • the second battery is coupled to the fourth interface of the charging chip to supply power to the working circuit.
  • the embodiments of the present application provide another electronic device.
  • the electronic device includes a power supply battery, a working circuit, and a charging chip in any possible implementation manner of the second aspect above.
  • the power supply battery includes a first positive electrode and a second positive electrode.
  • the first positive electrode is coupled with the third interface of the charging chip to supply power to the working circuit.
  • the second positive electrode is coupled to the fourth interface of the charging chip to supply power to the working circuit.
  • an embodiment of the present application provides a method for controlling a charging circuit.
  • the control method is applicable to the charging circuit in any possible implementation manner of the above first aspect.
  • the above control method includes: the controller detects the voltage of the first battery and the voltage of the second battery.
  • the controller outputs the first control signal and the second control signal according to the pressure difference between the first battery and the second battery.
  • the first control signal controls the first switching element to be in a conducting, incompletely conducting or off state
  • the second control signal controls the second switching element to be in a conducting, incompletely conducting or off state.
  • the first control signal controls the first switching element to be in an on state, not fully on or off
  • the second control signal controls the second switch element to be on, not fully on or off
  • the off state includes: when the first battery and the second battery are in the charging state, if the voltage of the first battery is higher than the voltage of the second battery, and the voltage difference between the first battery and the second battery is greater than a preset threshold, Then, the first control signal is used to control the conduction of the first switch element to charge the first battery; the second control signal is used to control the second switch element to not be fully turned on, so that the voltage of the second battery is regulated and charged.
  • the first control signal controls the first switching element to be in an on state, not fully on or off
  • the second control signal controls the second switch element to be on, not fully on or off
  • the off state includes: when the first battery and the second battery are in the charging state, if the voltage of the second battery is higher than the voltage of the first battery, and the voltage difference between the first battery and the second battery is greater than the preset threshold, Then, the first control signal is used to control the first switching element to be not fully turned on, so that the first battery is charged and voltage-regulated; the second control signal is used to control the second switching element to be turned on, so that the second battery is charged.
  • the first control signal when the first battery and the second battery are in a charged state, if the voltage difference between the first battery and the second battery is less than or equal to a preset threshold, the first control signal is used to control the The first switching element is turned on to charge the first battery; the second control signal is used to control the conduction of the second switching element to charge the second battery.
  • both the second terminal of the first switching element and the second terminal of the second switching element are also used for coupling with the working circuit, so as to discharge the first battery and the second battery.
  • the first control signal controls the first switching element to be in a conducting state, an incomplete conducting state or an off state
  • the second control signal controls the second switching element to be in a conducting state, an incomplete conducting state or an off state, including: in the first battery When the battery and the second battery are in a discharge state, if the voltage of the first battery is higher than the voltage of the second battery, and the voltage difference between the first battery and the second battery is greater than the preset threshold, the first control signal is used to control the second battery.
  • a switch element is turned on to make the first battery supply power to the working circuit; the second control signal is used to control the second switch element to be turned off, so that the second battery does not supply power to the working circuit.
  • both the second terminal of the first switching element and the second terminal of the second switching element are also used for coupling with the working circuit, so as to discharge the first battery and the second battery.
  • the first control signal controls the first switching element to be in a conducting state, an incomplete conducting state or an off state
  • the second control signal controls the second switching element to be in a conducting state, an incomplete conducting state or an off state, including: in the first battery When the battery and the second battery are in a discharge state, if the voltage of the second battery is higher than the voltage of the first battery, and the voltage difference between the first battery and the second battery is greater than the preset threshold, the first control signal is used to control the first battery.
  • a switch element is turned off, so that the first battery does not supply power to the working circuit; the second control signal is used to control the second switching element to be turned on, so that the second battery supplies power to the working circuit.
  • both the second terminal of the first switching element and the second terminal of the second switching element are also used for coupling with the working circuit, so as to discharge the first battery and the second battery.
  • the first control signal controls the first switching element to be in a conducting state, an incomplete conducting state or an off state
  • the second control signal controls the second switching element to be in a conducting state, an incomplete conducting state or an off state, including: in the first battery When the battery and the second battery are in a discharge state, if the voltage of the first battery is higher than the voltage of the second battery, and the voltage difference between the first battery and the second battery is greater than the preset threshold, the first control signal is used to control the second battery.
  • a switch element is not fully turned on, so that the first battery supplies power to the working circuit and regulates the voltage; the first control signal is used to control the conduction of the second switch element, so that the second battery supplies power to the working circuit.
  • both the second terminal of the first switching element and the second terminal of the second switching element are also used for coupling with the working circuit, so as to discharge the first battery and the second battery.
  • the first control signal controls the first switching element to be in a conducting state, an incomplete conducting state or an off state
  • the second control signal controls the second switching element to be in a conducting state, an incomplete conducting state or an off state, including: in the first battery When the battery and the second battery are in a discharge state, if the voltage of the second battery is higher than the voltage of the first battery, and the voltage difference between the first battery and the second battery is greater than the preset threshold, the first control signal is used to control the first battery.
  • a switch element is turned on to make the first battery supply power to the working circuit; the second control signal is used to control the second switch element not to be fully turned on, so that the second battery supplies power to the working circuit and regulates the voltage.
  • both the second terminal of the first switching element and the second terminal of the second switching element are also used for coupling with the working circuit, so as to discharge the first battery and the second battery.
  • the first control signal controls the first switching element to be in a conducting state, an incomplete conducting state or an off state
  • the second control signal controls the second switching element to be in a conducting state, an incomplete conducting state or an off state, including: in the first battery When the battery and the second battery are in the discharge state, if the voltage difference between the first battery and the second battery is less than or equal to the preset threshold, the first control signal is used to control the conduction of the first switching element to make the first battery work
  • the circuit supplies power; the second control signal is used to control the conduction of the second switch element, so that the second battery supplies power to the working circuit.
  • the embodiments of the present application provide yet another electronic device.
  • the electronic device includes a first battery, a second battery, a charging circuit and a working circuit. Wherein, the first battery and the second battery are coupled with the working circuit through the charging circuit.
  • the charging circuit is configured to perform the method in any of the possible implementations of the fifth aspect above.
  • any of the control methods, charging chips, and electronic devices provided above for any charging circuit can be implemented by the corresponding charging circuits provided above, or related to the corresponding charging circuits provided above. Therefore, for the beneficial effects that can be achieved, reference may be made to the beneficial effects in the charging circuit provided above, which will not be repeated here.
  • FIG. 1 is a schematic structural diagram 1 of an electronic device with dual batteries charging and discharging simultaneously;
  • FIG. 2 is a second structural schematic diagram of an electronic device with dual batteries charging and discharging simultaneously;
  • FIG. 3 is a schematic structural diagram 1 of an electronic device including a charging circuit according to an embodiment of the present application
  • FIG. 3A is a first waveform diagram of a first control signal and a second control signal provided by an embodiment of the application;
  • 3B is an equivalent circuit diagram of the circuit diagram shown in FIG. 3 using the waveform diagram of FIG. 3A ;
  • FIG. 3C is a second waveform diagram of the first control signal and the second control signal provided by the embodiment of the application;
  • FIG. 3D is an equivalent circuit diagram of the circuit diagram shown in FIG. 3 using the waveform diagram of FIG. 3C ;
  • FIG. 3E is a third waveform diagram of the first control signal and the second control signal provided by the embodiment of the application.
  • FIG. 3F is an equivalent circuit diagram of the circuit diagram shown in FIG. 3 using the waveform diagram of FIG. 3E ;
  • 3G is a fourth waveform diagram of the first control signal and the second control signal provided by the embodiment of the application.
  • FIG. 3H is an equivalent circuit diagram of the circuit diagram shown in FIG. 3 using the waveform diagram of FIG. 3G ;
  • 3I is a waveform diagram 5 of the first control signal and the second control signal provided by the embodiment of the application;
  • 3J is an equivalent circuit diagram of the circuit diagram shown in FIG. 3 using the waveform diagram of FIG. 3I;
  • FIG. 4 is a second schematic structural diagram of an electronic device including a charging circuit according to an embodiment of the present application.
  • FIG. 5 is a flowchart of a method for controlling a charging circuit provided by an embodiment of the present application
  • FIG. 6 is a flowchart of a charging and discharging method of an electronic device including a charging circuit provided by an embodiment of the present application;
  • FIG. 7 is a third schematic structural diagram of an electronic device including a charging circuit according to an embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of a charging chip according to an embodiment of the present application.
  • orientations may include, but are not limited to, the orientations relative to the schematic placement of the components in the drawings. It should be understood that these orientations The terminology can be a relative concept, and they are used for relative description and clarification, which can change correspondingly according to the change of the orientation in which the components are placed in the drawings.
  • connection should be understood in a broad sense.
  • connection may be a fixed connection, a detachable connection, or an integrated body; it may be directly connected, or Can be indirectly connected through an intermediary.
  • coupled may be means of electrical connections that enable signal transmission.
  • FIG. 1 is a schematic structural diagram 1 of an electronic device with dual batteries charged and discharged simultaneously.
  • the electronic device includes a charging circuit, a working circuit, a first battery and a second battery.
  • the first battery and the second battery can be coupled with the power adapter through a charging circuit, and the first battery and the second battery can also be coupled with the working circuit through the charging circuit.
  • the power adapter converts the 220-volt commercial power into direct current through the AC-DC converter, and charges the first battery and the second battery.
  • the working circuit may include a processor, a memory, a communication interface, etc., and the working circuit may also be a power management integrated circuit (power management IC, PMIC), or a system on a chip (system on a chip, SoC).
  • power management IC power management integrated circuit
  • SoC system on a chip
  • FIG. 2 is a second structural schematic diagram of an electronic device with dual-battery charging and discharging.
  • the first battery and the second battery in the electronic device can also use two independent charge pump chips to charge the first battery and the second battery respectively, so as to quickly charge the first battery and the second battery. charging to increase the speed of charging.
  • the above electronic device further includes a first charge pump chip and a second charge pump chip. Wherein, one end of the first charge pump chip is coupled with the output end Vbus of the power adapter, and the other end of the first charge pump chip is coupled with the first battery. One end of the second charge pump chip is coupled to the output end Vbus of the power adapter, and the other end of the first charge pump chip is coupled to the second battery.
  • the power adapter simultaneously charges the first battery and the second battery through a charging circuit, or uses a charge pump chip to charge the first battery and the second battery. Due to inconsistent parameters (such as cut-off voltage) of the first battery and the second battery, and the existence of the path impedance, there may be a situation where one of the first battery and the second battery cannot be fully charged, thus causing the battery of the electronic device to be usable. Smaller capacity issues.
  • the embodiment of the present application provides a charging circuit applied to the electronic equipment in the above-mentioned FIG. 1 and FIG. 2 .
  • the charging voltage is adjusted so that both batteries of different capacities can be fully charged, thereby increasing the usable capacity of the battery of the electronic device.
  • the above charging circuit includes a voltage converter, a controller, a first switching element Q1 and a second switching element Q2.
  • the first end of the first switching element Q1 is used for coupling with the first battery
  • the first end of the second switching element Q2 is used for coupling with the second battery.
  • the second terminal of the first switching element Q1 and the second terminal of the second switching element Q2 are both coupled to the first terminal of the voltage converter, so that the voltage converter charges the first battery and the second battery.
  • the second end of the voltage conversion circuit is used for coupling with the power adapter, and is used for obtaining the direct current Vbus output by the power adapter.
  • the voltage converter can convert the direct current Vbus output from the power adapter into the direct current (Vsys voltage shown in FIG. 1 ) suitable for the working circuit of the electronic device.
  • the voltage converter may be a DC-DC conversion circuit (eg, a buck circuit) or a DC-DC conversion chip (eg, a buck chip) and other circuits that perform DC voltage conversion, which are not specifically limited in this application.
  • the first switching element Q1 and the second switching element Q2 may be devices with switching functions such as metal-oxide-semiconductor field-effect transistor (MOSFET).
  • MOSFET metal-oxide-semiconductor field-effect transistor
  • both the first switching element Q1 and the second switching element Q2 may be an N-type MOS transistor or a P-type MOS transistor.
  • the first end of the first switching element Q1 may be the source (source, S) of the MOS transistor, or the drain (drain, D) of the MOS transistor; the second end of the first switching element Q1 may be the source (source, S) of the MOS transistor.
  • the drain can also be the source of the MOS transistor.
  • the first end of the second switching element Q2 may be the source of the MOS transistor or the drain of the MOS transistor; the second end of the second switching element Q2 may be the drain of the MOS transistor or the MOS transistor source of the tube.
  • the control terminal of the first switching element Q1 and the control terminal of the second switching element Q2 may be the gate (gate, G) of the MOS transistor.
  • the above-mentioned controller is used for coupling with the first battery and the second battery to detect the voltage Vbat1 of the first battery and the voltage Vbat2 of the second battery, and output the first control signal and the second battery according to the voltage difference between the first battery and the second battery control signal.
  • the above-mentioned controller is also coupled to the control terminal of the first switching element Q1 for outputting a first control signal to the first switching element Q1, and controlling the first switching element Q1 to be in a conducting state or an incomplete conducting state through the first control signal , so that the first battery is in a state of charge or voltage regulation.
  • the above-mentioned controller is also coupled to the control terminal of the second switching element Q2 for outputting a second control signal to the second switching element Q2, and controlling the second switching element Q2 to be in a conducting or incompletely conducting state through the second control signal , so that the second battery is in a state of charge or voltage regulation.
  • the above-mentioned controller may include a drive circuit and a voltage detection circuit.
  • the voltage detection circuit is used for coupling with the first battery to detect the voltage Vbat1 of the first battery.
  • the voltage detection circuit is also used for coupling with the second battery to detect the voltage Vbat2 of the second battery.
  • the drive circuit is coupled to the voltage detection circuit, and is used to obtain the voltage Vbat1 of the first battery and the voltage Vbat2 of the second battery from the voltage detection circuit, and output the first control signal and the second battery according to the voltage difference between the first battery and the second battery.
  • the control signal is used to control the first switching element Q1 and the second switching element Q2 to be in a conducting state or an incomplete conducting state.
  • the driving circuit includes two output terminals, wherein the first output terminal of the driving circuit is used for outputting the first control signal and is coupled with the control terminal of the first switching element Q1, so that the first control signal controls the first switching element Q1 in a conducting or incompletely conducting state.
  • the second output terminal of the driving circuit is used for outputting the second control signal, and is coupled to the control terminal of the second switching element Q2, so that the second control signal controls the second switching element Q2 to be in a conducting state or an incomplete conducting state.
  • the above-mentioned controller is implemented by hardware circuit structures such as a drive circuit and a voltage detection circuit, in order to control the working state of the controller and perform data detection, the above-mentioned controller is also connected to a communication control bus, such as an integrated circuit interconnect (inter-integrated circuit, I2C) bus, the I2C bus can be used to control the voltage detection circuit of the controller to perform voltage detection, and can also control the voltage detection circuit to output the first control signal and the second control signal.
  • a communication control bus such as an integrated circuit interconnect (inter-integrated circuit, I2C) bus
  • I2C bus can be used to control the voltage detection circuit of the controller to perform voltage detection, and can also control the voltage detection circuit to output the first control signal and the second control signal.
  • a first detector may be coupled to a path where the first battery is located
  • a second detector may be coupled to a path where the second battery is located.
  • the first detector can detect the voltage Vbat1 of the first battery
  • the second detector can detect the voltage Vbat2 of the second battery.
  • the voltage detection control module may be coupled with the first detector and the second detector to obtain detection data of the first detector and the second detector, the detection data may include the voltage Vbat1 of the first battery and the voltage Vbat2 of the second battery Wait.
  • the controller may acquire the voltage Vbat1 of the first battery and the voltage Vbat2 of the second battery detected by the first detector, and output the first control signal and the first control signal according to the voltage difference between the voltage Vbat1 of the first battery and the voltage Vbat2 of the second battery.
  • Two control signals so that the first control signal controls the first switching element Q1 to be in a conducting state or an incompletely conducting state, and the second control signal controls the second switching element Q2 to be in a conducting state or an incompletely conducting state.
  • the above controller is implemented by hardware structures such as drive circuit and voltage detection circuit, and the response speed of the controller is faster, which can effectively avoid the instantaneous high current generated at the moment of control signal switching. Damage to the device in the charging circuit or damage to the battery makes the charging circuit more reliable.
  • the driving circuit can adjust the output of the first switching element.
  • the duty cycle of a control signal is adjusted, and the duty cycle of the output second control signal is adjusted.
  • the duty ratio refers to the time proportion of the high-level pulse in the entire pulse period in one pulse period.
  • the duty ratio of a control signal of a high-level pulse for 1 second and a low-level pulse for 1 second is 50%.
  • the duty cycle of the first control signal is 100%, that is, when the first control signal is a continuous high-level signal, the first switching element Q1 is in an on state, and when the duty cycle of the control signal is less than When a certain value (such as 35%), the first switching element Q1 is in an off state, and when the duty cycle of the control signal is greater than a certain value (such as 35%) and less than 100%, the first switching element Q1 is in an incomplete conduction state. state.
  • the second control signal which will not be repeated here.
  • first control signal and second control signal may be pulse width modulation (pulse width modulation, PWM) signals output by a pulse power supply. Therefore, the above-mentioned drive circuit is provided with a pulse power supply.
  • PWM pulse width modulation
  • the voltage detection circuit in the controller can detect the voltage Vbat1 of the first battery and the voltage of the second battery.
  • voltage Vbat2 The drive circuit in the controller can obtain the voltage Vbat1 of the first battery and the voltage Vbat2 of the second battery from the voltage detection circuit, and compare the voltage Vbat1 of the first battery and the voltage Vbat2 of the second battery, according to the voltage of the first battery.
  • the comparison result of the voltage Vbat1 and the voltage Vbat2 of the second battery outputs a first control signal and a second control signal, respectively.
  • the first control signal For a pulse signal with a duty ratio between a certain value (such as 35%) and 100%, such as a pulse signal with a duty ratio of 65% as shown in FIG. 3C, the first switching element Q1 can be controlled to not be fully turned on, so that The first switching element Q1 is in a voltage regulation state; the second control signal is a continuous high level signal, which can control the second switching element Q2 to be fully turned on, so that the first switching element Q1 is in a fully turned-on state.
  • the first control signal is a continuous high level signal, which can control The first switching element Q1 is completely turned on, so that the first switching element Q1 is in a completely conducting state;
  • the second control signal is a continuous high level signal, which can control the second switching element Q2 to be completely turned on, so that the second switching element Q2 in a fully conducting state.
  • FIG. 3 can form an equivalent circuit diagram as shown in FIG. 3F, that is, the paths from the charging circuit to the first battery and the second battery are both open, and the charging circuit can respectively connect the first battery and the second battery through the voltage converter. Charge.
  • the above-mentioned preset threshold is preset according to the actual conditions of the first battery and the second battery, for example, the above-mentioned preset threshold may be 100mV.
  • the charging currents of the first battery and the second battery can be controlled by the first switching element Q1 and the second switching element Q2 in the charging circuit, respectively, so as to avoid the second battery.
  • the parameters (such as cut-off voltage) of one battery and the second battery are inconsistent or the impedance of the charging path (such as the charging path formed by the charging circuit to the first battery) is unbalanced, which leads to the problem that a certain battery cannot be fully charged, so that the first battery and the first battery cannot be fully charged.
  • Both the second batteries can be fully charged, so as to increase the available capacity of the battery in the electronic device and improve the use performance of the battery.
  • the charging circuit shown in FIG. 3 can also be used in the discharge scenario of the first battery and the second battery, and the second end of the first switching element Q1 and the second switching element Q2
  • the second terminal can also be used to couple with the working circuit in the electronic device shown in FIG. 1 to discharge the first battery and the second battery and supply power to the working circuit in the electronic device.
  • the controller of the charging circuit is further used to detect the voltage of the first battery and the voltage of the second battery, and according to the first battery and the second battery The pressure difference outputs the first control signal and the second control signal.
  • the first control signal is also used to control the first switching element Q1 to be in an off state.
  • the second control signal is also used to control the second switching element Q2 to be in an off state.
  • the voltage detection circuit in the controller can detect the voltage Vbat1 of the first battery and the voltage Vbat2 of the second battery in the whole discharging scene of the electronic device.
  • the drive circuit in the controller can obtain the voltage Vbat1 of the first battery and the voltage Vbat2 of the second battery from the voltage detection circuit, and compare the voltage Vbat1 of the first battery and the voltage Vbat2 of the second battery, according to the voltage of the first battery.
  • the comparison result of the voltage Vbat1 and the voltage Vbat2 of the second battery outputs a first control signal and a second control signal, respectively.
  • the charging circuit can isolate the first battery and the second battery, so as to prevent the large voltage difference between the first battery and the second battery from causing a large current to burn the device or damage the battery.
  • a battery with a higher voltage can be used for power supply, or a battery with a lower voltage can be used for power supply.
  • the following is an example of using a battery with a larger voltage to supply power when the electronic device is in a shutdown state.
  • the first control signal is a continuous low level signal, which can control the first switching element Q1 to turn off, so that the first switching element Q1 is off.
  • the second control signal is a continuous high level signal, which can control the second switching element Q2 to be turned on, so that the second switching element Q2 is in a fully turned-on state.
  • FIG. 3J can form an equivalent circuit diagram as shown in FIG. 3J, that is, the path from the first battery to the working circuit is closed, the path from the second battery to the working circuit is opened, and the second battery is connected to the working circuit of the electronic device. powered by.
  • the first control signal and the second control signal makes the above-mentioned FIG. 3 form an equivalent circuit diagram as shown in FIG. 3H , that is, the first control signal is a continuous high-level signal, which can control the first switching element Q1 to be completely turned on, so that the first switching element is turned on.
  • Q1 is in a fully conducting state, the path between the first battery and the working circuit is open, and the first battery can supply power to the working circuit.
  • the second control signal is a continuous low level signal, which can control the second switching element Q2 to be turned off, so that the second switching element Q2 is in an off state, the path between the first battery and the working circuit is disconnected, and the second battery temporarily Do not supply power to operating circuits.
  • the first control signal and the second battery as shown in FIG. 3I can be used.
  • the first control signal is a continuous low-level signal, which can control the first switching element Q1 to be turned off, so that the first switching element Q1 is in the In the off state, the path between the first battery and the working circuit is disconnected, and the first battery temporarily does not supply power to the working circuit.
  • the second control signal is a continuous high-level signal, which can control the second switching element Q2 to be fully turned on, so that the second switching element Q2 is in a fully conductive state, the path between the first battery and the working circuit is opened, and the second battery Power can be supplied to the working circuit.
  • the first control signal and the second control signal as shown in FIG. 3E can be used, and the above-mentioned FIG. 3 forms the equivalent circuit diagram as shown in FIG. 3F , that is, the first control signal is a continuous high level signal, which can control the first switching element Q1 to be completely turned on, so that the first switching element Q1 is in a fully turned-on state, and the first The path between a battery and the working circuit is opened, and the first battery can supply power to the working circuit.
  • the first battery and the second battery are in a discharged state
  • the first battery and the second battery if the voltage difference between the first battery and the second battery is large, the first battery and the second battery
  • the battery with the smaller voltage in the second battery supplies power to the working circuit, while the battery with the larger voltage in the first battery and the second battery is in a voltage regulation state; when the voltage difference between the first battery and the second battery is reduced, the first battery and the second battery
  • Both the battery and the second battery supply power to the working circuit, so as to avoid a large voltage difference between the first battery and the second battery that leads to mutual charging of large currents, resulting in the phenomenon of burning the device or damaging the battery.
  • the specific control process is as follows:
  • the first control signal and the second control signal makes the above-mentioned FIG. 3 form an equivalent circuit diagram as shown in FIG. 3D, that is, the first control signal is a pulse signal with a duty ratio between a certain value (such as 35%) and 100%, which can control the first control signal.
  • a switching element Q1 is not fully turned on, so that the first switching element Q1 is in a voltage regulation state. At this time, the first switching element Q1 can be equivalent to a variable resistance resistor R1, and the first battery can charge the second battery to adjust the voltage.
  • the second control signal is a continuous high-level signal, which can control the second switching element Q2 to be turned on, so that the second switching element Q2 is in a conducting state, the path between the first battery and the working circuit is opened, and the second battery is turned to work. circuit powered.
  • the first control signal and the second battery as shown in FIG. 3A can be used.
  • Two control signals, and make the above-mentioned FIG. 3 form an equivalent circuit diagram as shown in FIG. 3B, that is, the first control signal is a continuous high-level signal, which can control the first switching element Q1 to be turned on, so that the first switching element Q1 is in the In the conduction state, the path between the first battery and the working circuit is opened, and the first battery supplies power to the working circuit.
  • the second control signal is a pulse signal with a duty ratio between a certain value (such as 35%) and 100%, which can control the second switching element Q2 to not be fully turned on, so that the second switching element Q2 is in a voltage regulation state, at this time
  • the second switching element Q2 may be equivalent to a variable resistance resistor R2, and the first battery may charge the second battery to adjust the voltages of the first battery and the second battery.
  • the first control signal and the second control signal as shown in FIG. 3E can be used, and the above-mentioned FIG. 3 forms the equivalent circuit diagram as shown in FIG. 3F , that is, the first control signal is a continuous high level signal, which can control the first switching element Q1 to be completely turned on, so that the first switching element Q1 is in a fully turned-on state, and the first The path between a battery and the working circuit is opened, and the first battery can supply power to the working circuit.
  • the second control signal is a continuous high-level signal, which can control the second switching element Q2 to be fully turned on, so that the second switching element Q2 is in a fully conductive state, the path between the first battery and the working circuit is opened, and the second battery It is also possible to supply power to the working circuit.
  • the first battery and the second battery of the electronic device can be charged either by the charging circuit shown in FIG. 3 , or by using two independent charge pump chips to charge the first battery respectively. and charge the second battery.
  • the above electronic device further includes a first charge pump chip and a second charge pump chip.
  • One end of the first charge pump chip is coupled to the output end Vbus of the power adapter, and the other end of the first charge pump chip is coupled to the first battery.
  • One end of the second charge pump chip is coupled to the output end Vbus of the power adapter, and the other end of the first charge pump chip is coupled to the second battery.
  • the first charge pump chip when the first battery or the second battery meets the charging conditions of the charge pump chip, for example, the voltage of the first battery reaches 3.5V, the first charge pump chip can be used to charge the first battery.
  • the voltage of the second battery reaches 3V, and the second charge pump chip can be used to charge the second battery.
  • the voltage detection circuit in the controller can detect the voltage Vbat1 of the first battery and the voltage Vbat2 of the second battery.
  • the first control signal output by the driver in the controller can control the first switching element Q1 to be in an off state, the first battery stops using the charging circuit for charging, and uses the first charge The pump chip is charged.
  • the second control signal output by the driver in the controller can control the second switching element Q2 to be in an off state, the second battery stops using the charging circuit for charging, and uses the second charge The pump chip is charged.
  • the above-mentioned electronic device can use the charge pump chip to rapidly charge the first battery and the second battery, so as to improve the charging speed.
  • the controller in the above charging circuit can also output a first control signal, So as to control the first switching element Q1 to be in a conducting state, and continue to use the charging circuit to charge the first battery.
  • the controller in the above charging circuit can also output the second battery.
  • the control signal is used to control the second switching element Q2 to be in an on state and continue to use the charging circuit to charge the second battery.
  • the charging current of the first battery can be detected by the first detector as shown in FIG. 4
  • the charging current of the second battery can be detected by the second detector as shown in FIG. 4 .
  • the first detector is arranged on the path where the first battery is located
  • the second detector is arranged on the path where the second battery is located.
  • an embodiment of the present application further provides a control method of a charging circuit, and the control method of the charging circuit includes S501-S503.
  • the controller detects the voltage of the first battery and the voltage of the second battery.
  • the controller outputs a first control signal according to the voltage difference between the first battery and the second battery, so as to control the first switching element Q1 to be turned on, not completely turned on, or turned off.
  • the controller outputs a second control signal according to the voltage difference between the first battery and the second battery, so as to control the second switching element Q2 to be in an on state, an incomplete turn on state or an off state.
  • an embodiment of the present application further provides a charging and discharging control method for an electronic device.
  • S601 is executed to enable the charging circuit to control the battery with a higher voltage among the first battery and the second battery to supply power to the working circuit of the electronic device.
  • the first battery supplies power to the working circuit of the electronic device.
  • the second battery supplies power to the working circuit of the electronic device.
  • the controller in the above charging circuit may execute S602 to compare the voltage Vbat1 of the first battery and the voltage Vbat2 of the second battery.
  • the above-mentioned charging circuit executes S603 to control the charging of the first battery to the electronic device. The working circuit is powered.
  • the charging circuit executes S604 to control the second battery to supply power to the working circuit of the electronic device.
  • the above control circuit executes S605 to control both the first battery and the second battery to supply power to the working circuit.
  • the user can connect the electronic device to the power adapter, and the electronic device, in response to the user's operation, executes S606 to make the first battery and the second battery in a charging state and charged by the above charging circuit.
  • the controller in the above charging circuit may execute S607, compare the voltage Vbat1 of the first battery and the voltage Vbat2 of the second battery, and control the first battery according to the difference between the voltage Vbat1 of the first battery and the voltage Vbat2 of the second battery. Status of the first battery and the second battery.
  • the above-mentioned charging circuit executes S608 to control the first battery to be in a charging state, The second battery is in a voltage regulation state.
  • the above charging circuit executes S609 to control the first battery to be in a voltage regulation state, and the second battery is charging.
  • the above control circuit executes S610 to control both the first battery and the second battery to be in a charging state.
  • the controller of the above charging circuit may further execute S611 to determine whether the voltage of the first battery satisfies the charging condition of the first charge pump chip. For example, it is assumed that the charging condition of the first charge pump chip is that the voltage Vbat1 of the first battery reaches 3.5V. When the voltage Vbat1 of the first battery reaches 3.5V, the controller of the above charging circuit controls the first switching element Q1 to be turned off, and executes S612 to charge the first battery from the first charge pump chip. Then, the above-mentioned charging chip may also execute S613 to determine whether the voltage of the first battery reaches the charging cut-off voltage.
  • S619 is executed to cut off the charge of the first battery.
  • the controller in the circuit may also execute S617 to control the first switching element Q1 to be in an on state, and continue to use the charging circuit to charge the first battery.
  • the controller of the above charging circuit may also execute S614 to determine whether the voltage of the second battery satisfies the charging condition of the second charge pump chip. For example, it is assumed that the charging condition of the second charge pump chip is that the voltage Vbat2 of the second battery reaches 3V. When the voltage Vbat1 of the second battery reaches 3V, the controller of the charging circuit controls the second switching element Q2 to be turned off, and executes S615 to charge the second battery from the second charge pump chip. Then, the above-mentioned charging chip may also execute S616 to determine whether the voltage of the second battery reaches the charging cut-off voltage.
  • the controller in the circuit may also execute S618 to control the second switching element Q2 to be in an on state, and continue to use the charging circuit to charge the second battery.
  • the embodiment of the present application further provides another electronic device.
  • the electronic device includes a power supply battery, a working circuit and a charging circuit.
  • the power supply battery includes two positive electrodes, respectively a first positive electrode and a second positive electrode, and a negative electrode.
  • the structure of the charging circuit may adopt the structure of the charging circuit in the above-mentioned FIG. 3 or FIG. 4 .
  • the charging circuit includes a voltage converter, a controller, a first switching element Q1 and a second switching element Q2.
  • the first end of the first switching element Q1 is used for coupling with the first positive electrode
  • the first end of the second switching element Q2 is used for coupling with the second positive electrode.
  • the second terminal of the first switching element Q1 and the second terminal of the second switching element Q2 are both coupled to the first terminal of the voltage converter, so that the voltage converter supplies power to the battery through the first positive electrode and the second positive electrode.
  • the second end of the voltage conversion circuit is used for coupling with the power adapter, and is used for obtaining the direct current Vbus output by the power adapter.
  • the above-mentioned controller is used for coupling with the first positive electrode and the second positive electrode to detect the voltage of the first positive electrode and the voltage of the second positive electrode, and output the first control signal and the second control signal according to the voltage difference between the first positive electrode and the second positive electrode .
  • the above-mentioned controller is also coupled with the control terminal of the first switching element Q1, and is used to control the first switching element Q1 to be in a conducting state or an incomplete conducting state through a first control signal, so that the first positive electrode is in a charging state or a voltage regulating state .
  • the above-mentioned controller is also coupled with the control terminal of the second switching element Q2, and is used to control the second switching element Q2 to be in a conducting or incomplete conducting state through a second control signal, so that the second positive electrode is in a charging state or a voltage regulating state .
  • the embodiments of the present application further provide another electronic device.
  • the electronic device includes a first battery, a second battery, a charging circuit and a working circuit. Wherein, the first battery and the second battery are coupled with the working circuit through the charging circuit.
  • the charging circuit is used to perform the method shown in Figure 5 above. It should be understood that for the technical effect of the electronic device, reference may be made to the technical effect of the electronic device shown in FIG. 3 and FIG. 4 , which will not be repeated here.
  • the embodiment of the present application also provides a charging chip.
  • the charging chip can be applied to the electronic device shown in FIG. 1 above.
  • the electronic device includes a first battery, a second battery and a working circuit.
  • the charging chip includes a first interface, a second interface, a third interface, a fourth interface, and a charging circuit as shown in FIG. 3 .
  • the first interface is used for coupling the power adapter and the second end of the voltage conversion circuit.
  • the second interface is used for coupling the second end of the first switching element, the second end of the second switching element, the first end of the voltage conversion circuit and the working circuit.
  • the third interface is used to couple the first battery.
  • the fourth interface is used to couple the second battery.
  • the charging chip may further include a communication control interface for coupling a control bus (eg, I2C bus) and the controller.
  • a control bus eg, I2C bus
  • the charging circuit or charging chip provided in the embodiments of the present application can be assembled directly without considering the voltages of the first battery and the first battery, thereby improving production efficiency , reducing production costs.
  • the voltage of the first battery and the second battery can be quickly balanced and isolated when the voltage difference between the first battery and the second battery is large, thereby improving the charging and discharging of the battery. performance, thereby improving the safety and reliability of batteries for electronic devices.
  • Each functional unit in each of the embodiments of the embodiments of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.
  • the above-mentioned integrated units may be implemented in the form of hardware, or may be implemented in the form of software functional units.
  • the integrated unit if implemented in the form of a software functional unit and sold or used as an independent product, may be stored in a computer-readable storage medium.
  • a computer-readable storage medium includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned storage medium includes: flash memory, removable hard disk, read-only memory, random access memory, magnetic disk or optical disk and other media that can store program codes.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Secondary Cells (AREA)

Abstract

La présente demande concerne un circuit de charge, une puce de charge et un dispositif électronique. La présente demande peut résoudre le problème, dans un dispositif électronique utilisant deux batteries, de l'impossibilité de charger complètement l'une des batteries, aboutissant à une capacité disponible relativement faible des batteries du dispositif électronique. Le circuit de charge comprend un convertisseur de tension, un dispositif de commande, un premier élément de commutation et un second élément de commutation. Une première extrémité du premier élément de commutation est utilisée pour être couplée à une première batterie, et une première extrémité du second élément de commutation est utilisée pour être couplée à une seconde batterie. Une seconde extrémité du premier élément de commutation et une seconde extrémité du second élément de commutation sont toutes deux couplées à une première extrémité du convertisseur de tension pour charger la première batterie et la seconde batterie. Une seconde extrémité du convertisseur de tension est utilisée pour être couplée à un adaptateur d'alimentation. De cette manière, les courants de charge de la première batterie et de la seconde batterie peuvent être commandés au moyen du premier élément de commutation et du second élément de commutation respectivement, de sorte que la première batterie et la seconde batterie peuvent être complètement chargées, ce qui permet d'améliorer la capacité disponible des batteries dans le dispositif électronique, et d'améliorer les performances de service des batteries.
PCT/CN2022/070378 2021-03-23 2022-01-05 Circuit de charge, puce de charge et dispositif électronique Ceased WO2022199211A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN202110310820.0 2021-03-23
CN202110310820 2021-03-23
CN202110875500.X 2021-07-30
CN202110875500.XA CN115117951B (zh) 2021-03-23 2021-07-30 充电电路、充电芯片及电子设备

Publications (1)

Publication Number Publication Date
WO2022199211A1 true WO2022199211A1 (fr) 2022-09-29

Family

ID=83324578

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2022/070378 Ceased WO2022199211A1 (fr) 2021-03-23 2022-01-05 Circuit de charge, puce de charge et dispositif électronique

Country Status (2)

Country Link
CN (1) CN115117951B (fr)
WO (1) WO2022199211A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115498747A (zh) * 2022-11-22 2022-12-20 广州疆海科技有限公司 储能并机设备和储能并机方法

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116707054B (zh) * 2022-12-22 2024-05-03 荣耀终端有限公司 电池管理电路、电池管理方法和电子设备
CN119561216A (zh) * 2023-08-23 2025-03-04 荣耀终端股份有限公司 供电电路、方法、芯片及电子设备
CN117096993B (zh) * 2023-10-13 2024-04-19 荣耀终端有限公司 电池的充电控制方法及电子设备

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6329796B1 (en) * 2000-07-25 2001-12-11 O2 Micro International Limited Power management circuit for battery systems
CN104852439A (zh) * 2015-06-10 2015-08-19 联想(北京)有限公司 电子设备以及双电池充放电切换方法
CN108461834A (zh) * 2018-02-12 2018-08-28 维沃移动通信有限公司 一种电池组结构、移动终端及充放电控制方法
CN211018337U (zh) * 2019-12-18 2020-07-14 维沃移动通信有限公司 一种充电控制装置、移动终端
CN111835057A (zh) * 2020-01-09 2020-10-27 成都万创科技有限责任公司 一种双电池系统及双电池切换、充电方法以及平板电脑

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101399450A (zh) * 2007-09-30 2009-04-01 联想(北京)有限公司 一种控制多电池对便携式设备供电的装置和方法
KR20200004650A (ko) * 2018-07-04 2020-01-14 주식회사 엘지화학 듀얼 배터리 프리차지 장치 및 방법
CN111009940B (zh) * 2019-12-02 2022-01-11 Oppo广东移动通信有限公司 一种充电均衡装置、终端设备、方法以及存储介质
CN111817387B (zh) * 2020-07-14 2024-06-11 Oppo广东移动通信有限公司 充电电路及其控制方法、电子设备

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6329796B1 (en) * 2000-07-25 2001-12-11 O2 Micro International Limited Power management circuit for battery systems
CN104852439A (zh) * 2015-06-10 2015-08-19 联想(北京)有限公司 电子设备以及双电池充放电切换方法
CN108461834A (zh) * 2018-02-12 2018-08-28 维沃移动通信有限公司 一种电池组结构、移动终端及充放电控制方法
CN211018337U (zh) * 2019-12-18 2020-07-14 维沃移动通信有限公司 一种充电控制装置、移动终端
CN111835057A (zh) * 2020-01-09 2020-10-27 成都万创科技有限责任公司 一种双电池系统及双电池切换、充电方法以及平板电脑

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115498747A (zh) * 2022-11-22 2022-12-20 广州疆海科技有限公司 储能并机设备和储能并机方法

Also Published As

Publication number Publication date
CN115117951B (zh) 2025-10-24
CN115117951A (zh) 2022-09-27

Similar Documents

Publication Publication Date Title
US11677260B2 (en) Managing power in a portable device comprising multiple batteries
WO2022199211A1 (fr) Circuit de charge, puce de charge et dispositif électronique
US20230268763A1 (en) Managing power in a portable device comprising multiple batteries
WO2022194106A1 (fr) Circuit de charge et de décharge de deux batteries et procédé de commande, et dispositif électronique
US9490644B2 (en) Reconfigurable compensator with large-signal stabilizing network
US10574073B2 (en) Electronic device and method for controlling power supply
US12160125B2 (en) Charging integrated circuit for charging battery device and electronic device including the same
CN103580216B (zh) 能够操作在不同配置中的电池充电系统和方法
CN108347089B (zh) 电能传输控制器、电能传输系统和电能传输方法
US20120139500A1 (en) Method for limiting battery discharging current in battery charger and discharger circuit
TW201813235A (zh) 混合電源升降壓充電器
CN108233451A (zh) 电子装置及其充电方法
TWI495226B (zh) 充電器及電子裝置
CN111917148B (zh) 用于双电池应用的降压-升压电池充电器
CN101202466A (zh) 充电装置
CN104782019B (zh) 防止电池充电器的输入电压升高的电路及其控制方法
CN103855781B (zh) 充电器及电子装置
US9906053B2 (en) Energy storage device and control method thereof
CN110365082B (zh) 电源管理电路、电子设备及电源管理方法
WO2025237196A1 (fr) Circuit et procédé d'équilibrage de batterie et dispositif électronique
CN113614919B (zh) 半导体集成电路
CN118199225B (zh) 充电控制方法、储能设备和可读存储介质
TW202105878A (zh) 用於多電池應用之單電感多輸出充電器
US20240322590A1 (en) Dynamic load support in hybrid power buck-boost (hpbb) battery charger using forced continuous conduction mode (fccm)
CN118763886A (zh) 电荷泵及电池系统

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: 22773875

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 22773875

Country of ref document: EP

Kind code of ref document: A1