WO2020047693A1 - 一种电源管理电路 - Google Patents

一种电源管理电路 Download PDF

Info

Publication number
WO2020047693A1
WO2020047693A1 PCT/CN2018/103742 CN2018103742W WO2020047693A1 WO 2020047693 A1 WO2020047693 A1 WO 2020047693A1 CN 2018103742 W CN2018103742 W CN 2018103742W WO 2020047693 A1 WO2020047693 A1 WO 2020047693A1
Authority
WO
WIPO (PCT)
Prior art keywords
power
switch
battery
control
terminal
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/CN2018/103742
Other languages
English (en)
French (fr)
Inventor
胡锐
王亚波
吴子洲
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.)
Shenzhen Mindray Bio Medical Electronics Co Ltd
Shenzhen Mindray Scientific Co Ltd
Original Assignee
Shenzhen Mindray Bio Medical Electronics Co Ltd
Shenzhen Mindray Scientific 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 Shenzhen Mindray Bio Medical Electronics Co Ltd, Shenzhen Mindray Scientific Co Ltd filed Critical Shenzhen Mindray Bio Medical Electronics Co Ltd
Priority to CN201880001255.6A priority Critical patent/CN109417206B/zh
Priority to PCT/CN2018/103742 priority patent/WO2020047693A1/zh
Publication of WO2020047693A1 publication Critical patent/WO2020047693A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • 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
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M10/4257—Smart batteries, e.g. electronic circuits inside the housing of the cells or batteries
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
    • H02J7/60—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries including safety or protection arrangements
    • H02J7/663—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries including safety or protection arrangements using battery or load disconnect circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
    • H02J7/855—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries with circuits adapted for supplying loads from the 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
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
    • 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 battery-powered equipment, and in particular, to a power management circuit.
  • the device still needs a battery to power the switch management module (Microcontroller Unit (MCU) and its peripheral circuits) when the device is turned off.
  • MCU Microcontroller Unit
  • the switch management module has been designed with low power consumption, the switch management module will still be in the working state under the shutdown state, thereby continuously consuming the energy of the battery. In this way, when the device is stored for a long time, idle Or during transportation, the battery will always be discharged, which will cause the battery to over discharge or even damage the battery.
  • the present application provides a power management circuit to realize the start-up and shutdown functions of a battery-powered device, and to reduce the power consumption of the battery when the battery-powered device is in a shutdown state.
  • an embodiment provides a power management circuit, including: a switch management module, a load switch, and a battery;
  • the battery includes a battery cell and a battery protection board, and the battery protection board is used to control the power output of the battery according to the input level signal;
  • the switch management module includes a power receiving end, a detection end, a first control end and a second control end;
  • the power receiving end is used to obtain the power input from the battery, and the detection end is used to detect the power-on or power-off signal;
  • the first control terminal is connected to the load switch, and the second control terminal is connected to the battery protection board;
  • the switch management module detects a shutdown signal
  • the first control terminal When the switch management module detects a shutdown signal, the first control terminal outputs a first control signal to control the load switch to turn off and stop supplying power to the load; the second control terminal outputs a second control signal to control
  • the battery protection board turns off the power output of the battery.
  • the switch-on management module detects a start-up signal
  • the first control terminal outputs a third control signal to control the load switch to close and provide power to the load
  • the second control terminal outputs a fourth control signal to
  • the battery protection board is controlled to be turned on so that the battery maintains a state of outputting electric energy.
  • an embodiment provides a power management circuit, including: a switch management module, a load switch, a battery, and a switch circuit;
  • the switch circuit is connected between the battery and the switch management module, and the switch circuit is used to control the power output of the battery according to the input level signal;
  • the switch management module includes a power receiving end, a detection end, a first control end and a second control end;
  • the power receiving end is used to obtain the power input from the battery, and the detection end is used to detect the power-on or power-off signal;
  • the first control terminal is connected to the load switch, and the second control terminal is connected to the control terminal of the switch circuit;
  • the switch management module detects a shutdown signal
  • the first control terminal When the switch management module detects a shutdown signal, the first control terminal outputs a first control signal to control the load switch to turn off and stop supplying power to the load; the second control terminal outputs a second control signal to control The switch circuit turns off the power output of the battery.
  • the switch-on management module detects a start-up signal
  • the first control terminal outputs a third control signal to control the load switch to close and provide power to the load
  • the second control terminal outputs a fourth control signal to The switch circuit is controlled to be turned on so that the battery maintains a state of outputting electric energy.
  • the switch management module when the switch management module detects a shutdown signal, the load switch is controlled to turn off to stop supplying power to the load, and the battery protection board is controlled or connected between the battery and the switch management module.
  • the switch circuit shuts off the power output of the battery; when the switch management module detects a shutdown signal, it controls the load switch to close to provide power to the load, and controls the battery protection board or the switch circuit connected between the battery and the switch management module. Power on to keep the battery outputting power. It realizes the start-up and shutdown management of battery-powered equipment. At the same time, the power-on / off management module no longer consumes battery power in the shutdown state, thereby reducing battery power consumption.
  • FIG. 1 is a schematic structural diagram of a power management circuit according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of an internal structure of a battery according to an embodiment of the present invention.
  • FIG. 3 is a schematic structural diagram of a specific power management circuit according to an embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of another specific power management circuit according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of still another specific power management circuit according to an embodiment of the present invention.
  • FIG. 6 is a flowchart of a startup process and a shutdown process according to an embodiment of the present invention.
  • FIG. 7a is a timing diagram of a boot process in an embodiment of the present invention.
  • 7b is a timing diagram of a shutdown process in an embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of a power management circuit according to another embodiment of the present invention.
  • FIG. 9 is a schematic structural diagram of a specific power management circuit according to another embodiment of the present invention.
  • FIG. 10 is a schematic structural diagram of another specific power management circuit according to another embodiment of the present invention.
  • FIG. 11 is a schematic structural diagram of still another specific power management circuit according to another embodiment of the present invention.
  • FIG. 12 is a schematic structural diagram of still another specific power management circuit according to another embodiment of the present invention.
  • connection and “connection” in this application include direct and indirect connections (connections) unless otherwise specified.
  • the first control terminal when the power-on / off management module detects a shutdown signal, the first control terminal outputs a first control signal to control the load switch to turn off, stop supplying power to the load, and the second control terminal outputs a second control Signal to control the battery protection board to turn off the power output of the battery.
  • a switch circuit is connected between the battery and the switch management module.
  • the switch management module detects a shutdown signal
  • the first control terminal outputs a first control signal to control the load switch to turn off and stop supplying power to the load.
  • the second control terminal outputs a second control signal to control the switching circuit to turn off the power output of the battery.
  • a power management circuit is provided.
  • the power management circuit includes a switch management module 1, a load switch 2, and a battery 3.
  • the battery 3 includes a battery cell 31 and a battery protection board 32.
  • the battery protection board 32 is used to control the power output of the battery 3 according to the input level signal.
  • the switch management module 1 includes a power receiving terminal Vin, a detection terminal Key_N, a first A control terminal EN and a second control terminal Pwr_ON.
  • the power receiving terminal Vin is connected to the output terminal Vout of the battery 3 to obtain the power of the battery 3.
  • the detection terminal Key_N is used to detect the power-on or shutdown signal.
  • the first control terminal EN The load switch 2 is connected, and the second control terminal Pwr_ON is connected to the battery protection board.
  • the switch management module 1 detects a shutdown signal, its first control terminal EN outputs a first control signal to control the load switch 2 to turn off and stop supplying power to the load.
  • its second control terminal Pwr_ON outputs a second control.
  • the signal is used to control the battery protection board 32 to turn off the power output of the battery 3, so as to stop supplying power to the power-on / off management module 1.
  • the switch management module 1 detects the start-up signal
  • its first control terminal EN outputs a third control signal to control the load switch 2 to close, so that the battery 3 provides power to the load.
  • its second control terminal Pwr_ON outputs a fourth The control signal controls the battery protection board 32 to be turned on, so that the battery 3 maintains a state of outputting electric energy.
  • a pull-up resistor R1 is also connected between the Key_N terminal and the power receiving terminal Vin, which is used to provide a pull-up voltage to the Key_N terminal to ensure that the Key_N terminal is high level in the shutdown state.
  • the load switch 2 includes a power input terminal 21, a control terminal 22, and a power output terminal 23.
  • the power input terminal 21 is connected to the output terminal Vout of the battery 3.
  • the control terminal 22 is connected to the first control terminal EN of the switch management module 1.
  • the power output terminal 23 is connected to the load.
  • the load switch 2 is turned on when the control terminal 22 inputs a third control signal, so as to provide the power output from the battery 3 to the load.
  • the battery 3 includes a battery cell 31 and a battery protection plate 32.
  • the battery protection plate 32 is generally composed of a control chip B and a switch Q2.
  • the switch Q2 is connected between the output terminal of the battery 31 and the output terminal Vout of the battery 3, and its control terminal d is connected to the control terminal e of the control chip B to be turned on or off under the control of the control terminal e; the control chip B is used to monitor the power of the battery 3, and by detecting the voltage, output current, and cell temperature of the battery 3, the switch Q2 is disconnected in the case of the battery 3 overvoltage, overcurrent, output short circuit, and overtemperature, so that It plays a role of protecting the battery 31.
  • the control chip B may be, for example, a chip of type BQ20Z95DBT, and Q2 may be, for example, a MOS (Metal Oxide Semiconductor) field-effect transistor.
  • the enable terminal BAT_EN_N of the battery protection board can be led out, and the second control terminal Pwr_ON of the switch management module 1 controls the on or off of Q2 by controlling the enable terminal BAT_EN_N, so as to keep the battery 3 output
  • the state of the power or the power output of the battery 3 is turned off.
  • the control chip B of the battery protection board uses the chip BQ20Z95DBT
  • the in-position signal PRES of the chip can be used as the enable terminal BAT_EN_N.
  • the control chip B will control the switch Q2 to be turned on, so that the battery 3 will output power.
  • the control chip B controls the switch Q2 to be turned off.
  • the battery 3 no longer outputs power, and at the same time, the battery protection board 32 enters a low power consumption mode.
  • the power management circuit further includes a power switch 4.
  • a power switch 4 For a schematic structural diagram of the power management circuit, see FIG. 3, where the power switch 4 includes a first terminal a1 and a second terminal a2, and the first terminal a1 is grounded. The second end a2 is connected to the battery protection board 32. The power switch 4 is used to connect the second end a2 to the ground when triggered, and disconnect the second end a2 from the ground after the trigger stops; the detection by the switch management module 1
  • the terminal Key_N is connected to the second terminal a2 of the power switch 4 and is used to detect a startup signal or a shutdown signal provided by the power switch. Specifically, the second terminal a2 of the power switch 4 is connected to the enable terminal BAT_EN_N of the battery protection board 32.
  • the enable terminal BAT_EN_N of the battery protection board is instantly pulled down, that is, the enable terminal BAT_EN_N of the battery protection board is momentarily input Low level, at this time, the switching tube Q2 of the battery protection board 32 is turned on, and the battery 3 outputs power to apply a power supply voltage to the power supply terminal Vin of the switch management module 1.
  • the switch management module 1 detects the start-up signal, and its second control terminal Pwr_ON outputs a fourth control signal to control the battery protection board 32 to keep on, so that the battery 3 is maintained in an output power state, so that the battery 3 continues.
  • the power switch 4 can be triggered for more than a predetermined time (that is, a shutdown signal). For example, the power switch 4 is triggered for more than 3 seconds.
  • the shutdown signal can also be triggered by other methods, such as gesture triggering or voice triggering, which is not limited here.
  • the switch management module 1 detects a shutdown signal in the power-on state, and its first control terminal EN outputs a first control signal to control the load switch 2 to turn off, the battery 3 stops supplying power to the load, and the load equipment is turned off;
  • the second control terminal Pwr_ON outputs a second control signal to control the battery protection board 32 to turn off the power output of the battery 3, so that the battery 3 stops supplying power to the switch management module 1.
  • the switch management module 1 no longer consumes batteries 3 power, battery 3 enters a low power state.
  • a conversion circuit can also be connected between the output terminal Vout of the battery 3 and the power receiving terminal Vin of the switch management module 1 to convert the voltage output by the battery 3 into the switch management suitable through the conversion circuit. Supply voltage of module 1.
  • the power management circuit controls the enable end of the battery protection board through the second control end of the power-on / off management module to enable the battery to output power to the outside or turn off the power output of the battery.
  • the power switch When powering on, the power switch is triggered.
  • the battery provides instantaneous power to the power management module.
  • the power management module detects the power-on signal and controls the enable end of the battery protection board to maintain the power output state of the battery to make the battery power on and off.
  • the management module continuously provides power, and at the same time controls the load switch to close to enable the battery to provide power to the load, thereby realizing the startup management of the load equipment.
  • the power switch can be triggered for more than a predetermined time.
  • the switch management module detects the shutdown signal, controls the load switch to turn off to stop the battery from supplying power to the load, and controls the enable end of the battery protection board to Turn off the battery to output power to the outside, so that the battery stops supplying power to the power management module, and the shutdown management of the load equipment is realized.
  • the switch management module By turning off the power output of the battery in the shutdown state, the battery no longer provides power to the power management module, so that the battery power consumption is minimized in the shutdown state, which maximizes the battery's power retention in the shutdown state Time is more conducive to long-term storage, transportation, and emergency use of battery-powered equipment.
  • the power management circuit further includes a self-locking circuit 6.
  • the self-locking circuit 6 is connected between the second control terminal Pwr_ON of the switch management module 1 and the enable terminal BAT_EN_N of the battery protection board 32, and is configured to respond to the fourth control signal output from the second control terminal Pwr_ON to the battery 3
  • the battery 3 is maintained in a state of outputting electric power, and the battery 3 is maintained in a state of turning off the power output in response to a second control signal output from the second control terminal Pwr_ON.
  • the self-locking circuit 6 may be implemented by a first switching tube Q1, which is connected between the enable terminal BAT_EN_N of the battery protection board and the ground, and its control pole b and the switch management
  • the second control terminal Pwr_ON of module 1 is connected, and Q1 can be turned on or off according to the control signal output from the second control terminal Pwr_ON to maintain the enable terminal BAT_EN_N of the battery protection board at a low level or a high impedance state, so that The battery 3 is maintained in a state of continuously outputting electric power or a state in which electric power output is turned off.
  • the power-on / off management module When the power-on / off management module detects the power-on signal, its second control terminal Pwr_ON outputs a fourth control signal to turn on Q1 to complete the power-on self-locking. At this time, Q1 remains on and enables the enable terminal of the battery protection board 32 BAT_EN_N is maintained in a low-level state, so that the battery 3 is maintained in a state of outputting electric energy, and the battery 3 continues to provide electric power to the power management module 1.
  • the switch management module detects the shutdown signal, its second control terminal Pwr_ON outputs a second control signal to release Q1 from the self-locking state.
  • the enable terminal BAT_EN_N of the battery protection board 32 is in a high-impedance state, thereby protecting the battery.
  • the board 32 turns off the power output of the battery 3, the battery 3 no longer provides power to the power-on / off management module 1, and the battery 3 enters a low power consumption state.
  • the battery management circuit controls the battery to output power or turns off the battery power output by controlling the enable signal of the battery protection board.
  • the self-locking circuit When powering on, the self-locking circuit is powered on and self-locking, so that the enable end of the battery protection board is maintained at a low level, so that the battery continues to provide power to the power management module; when the power is off, the self-locking circuit releases self-locking.
  • the enable end of the battery protection board becomes a high-impedance state, thereby turning off the power output of the battery, the battery no longer provides power for the power management module and enters a low power state, so that the battery power consumption is minimized in the off state .
  • the power management circuit further includes a conversion circuit 5 and an isolation circuit 7.
  • the enabling terminal BAT_EN_N of the battery protection board 32 is used as a control terminal for controlling the output power of the battery 3 and turning off the power output;
  • the conversion circuit 5 is connected to the output terminal Vout of the battery protection board 32 and the power receiving terminal Vin of the switch management module 1 In between, the voltage output by the battery 3 can be converted into a power supply voltage adapted to the power-on / off management module 1.
  • the switch management module 1 is composed of an MCU (Microcontroller Unit), and its power supply voltage (that is, the operating voltage) is 3.3V. Then, the conversion circuit 5 converts the voltage output from the battery 3 into 3.3V and inputs it to The power receiving terminal Vin of the power-on / off management module 1 enables the power-on / off management module 1 to work normally.
  • the self-locking circuit 6 includes a first switch Q1, which is connected between the enable terminal BAT_EN_N and the ground of the battery protection board 32, and a control electrode b thereof is connected to the second control terminal Pwr_ON of the switch management module 1 through a self-locking resistor R2. .
  • the isolation circuit 7 includes a first diode D1 and a second diode D2.
  • the anode of D1 is connected to the detection terminal Key_N of the switch management module 1, and the anode of D2 is connected to the enable terminals BAT_EN_N, D1 and D2 of the battery protection board 32.
  • the cathode is connected to the second end a2 of the power switch 4, and the first end a1 of the power switch 4 is grounded.
  • the isolation circuit 7 is used to isolate the signal at the detection terminal Key_N and the signal at the BAT_EN_N terminal to prevent mutual interference between the signal at the Key_N terminal and the signal at the BAT_EN_N terminal when the power switch 4 is released.
  • a pull-up resistor R1 is also connected between the Key_N terminal and the power supply terminal Vin, which is used to provide a pull-up voltage to the Key_N terminal, and to ensure that the Key_N terminal is high when the power switch 4 is not triggered.
  • FIG. 6 shows a flowchart of a startup process and a shutdown process
  • FIG. 7a and FIG. 7b respectively show a sequence diagram of the startup process and a shutdown process.
  • the startup process includes processes 1, 2, and 3, and a shutdown process Including the processes 4 and 5, combined with FIG. 5 and FIG. 7a and FIG. 7b, the startup process is as follows:
  • the switch management module 1 controls the load switch 2 to be turned on through the EN terminal, that is, the main power switch in the device is turned on, thereby supplying power to the load and completing the turning on of the device.
  • the shutdown process is as follows:
  • D1 When shutting down, long press the power switch 4, D1 is turned on and pull the Key_N terminal down.
  • the switch management module 1 detects that the Key_N terminal is pulled down for more than a predetermined time, for example, long press the power switch 4 for more than 3 seconds .
  • the switch management module 1 detects that the Key_N terminal is pulled down for more than 3 seconds.
  • the switch management module 1 will set the signal at the Pwr_ON terminal to low level, and at the same time control the load switch 2 to open through the EN terminal. Load provides power;
  • the external circuit of the battery 3 will no longer consume the power of the battery 3, that is, the current consumption of the external circuit is close to 0, so that the power consumption of the battery 3 is minimized in the off state, so that the power of the battery 3 can be maintained relatively
  • the long time guarantees that the battery 3 can still be turned on normally after long-term storage.
  • the battery management circuit controls the battery to output power or turns off the battery power output by controlling the enable signal of the battery protection board.
  • the enable end of the battery protection board is controlled to a low level to control the battery output power.
  • the enable end of the battery protection board is controlled to a high-impedance state to turn off the power output of the battery and put the battery protection board into a low power consumption state.
  • the on / off management of the battery-powered equipment is realized; on the other hand, the power output of the battery is turned off in the off state, which minimizes the power consumption of the battery and maximizes the battery power retention time in the off state It is beneficial to long-term storage, transportation and emergency use of battery-powered equipment.
  • FIG. 8 shows a schematic structural diagram of another power management circuit.
  • the power management circuit includes a switch management module 1, a load switch 2, a battery 3, and a switch circuit 8.
  • the switch circuit 8 is connected between the battery 3 and the switch management module 1 and is used to control the power output of the battery according to the input level signal.
  • the switch management module 1 includes a power receiving terminal Vin, a detection terminal Key_N, a first control terminal EN and a second control terminal Pwr_ON.
  • the switch circuit 8 is connected to the output terminal Vout of the battery 3 and the power receiving of the switch management module 1 Between terminals Vin; the power receiving terminal Vin of the switch management module 1 is used to obtain the power input from the battery 3, the detection terminal Key_N is used to detect the power on or off signal, the first control terminal EN is connected to the load switch 2, and the second control terminal Pwr_ON It is connected to the control terminal c of the switching circuit 8.
  • the switch management module 1 detects a shutdown signal
  • its first control terminal EN outputs a first control signal to control the load switch 2 to turn off, so that the battery 3 stops supplying power to the load.
  • its second control terminal Pwr_ON outputs The second control signal is used to control the switch circuit 8 to turn off the power output of the battery 3, so as to stop the battery 3 from supplying power to the switch management module 1.
  • its first control terminal EN outputs a third control signal to control the load switch 2 to close, so that the battery 3 provides power to the load.
  • its second control terminal Pwr_ON outputs a fourth The control signal is used to control the switch circuit 8 to be turned on, so that the battery 3 maintains the state of outputting electric power, and continuously supplies electric power to the switch management module 4.
  • a pull-up resistor R1 is also connected between the Key_N terminal and the power receiving terminal Vin, which is used to provide a pull-up voltage to the Key_N terminal to ensure that the Key_N terminal is high level in the shutdown state.
  • the load switch 2 includes an electric energy input terminal 21, a control terminal 22, and an electric energy output terminal 23.
  • the electric energy input terminal 21 may be directly connected to the output terminal Vout of the battery 3 (as shown in FIG. 8), or may be connected through the switch circuit 8. It is connected to the output terminal Vout of the battery 3; its control terminal 22 is connected to the first control terminal EN of the switch management module 1, and the power output terminal 23 is connected to the load.
  • the load switch 2 inputs a third control signal to its control terminal 22 It is turned on to supply the electric power output from the battery 3 to the load.
  • the power management circuit further includes a power switch 4.
  • a power switch 4 For a schematic diagram of the structure, refer to FIG. 9, where the power switch 4 includes a first terminal a1 and a second terminal a2, a first terminal a1 of which is grounded and a second terminal a2. It is connected to the control terminal c of the switch circuit 8.
  • the power switch 4 is used to connect the second terminal a2 to the ground when triggered, and to disconnect the second terminal a2 from the ground after the trigger is stopped.
  • the detection terminal Key_N of the on / off management module 1 is connected to the second terminal a2 of the power switch 4 and is used to detect a start signal or a shutdown signal provided by the power switch 4.
  • the switch management module 1 detects the start-up signal, and its second control terminal Pwr_ON outputs a fourth control signal, and controls the switch circuit 8 to keep on, so that the battery 3 continues to provide power to the switch management module 1; at the same time, the switch The first control terminal EN of the machine management module 1 outputs a third control signal to control the load switch 2 to close, so that the battery 3 provides power to the load, and the load device is turned on.
  • the power switch 4 can be triggered for more than a predetermined time. For example, the power switch 4 is triggered for more than 3 seconds.
  • the switch management module 1 detects a shutdown signal when the power is on, and its first control terminal EN outputs The first control signal controls the load switch 2 to be turned off, the battery 3 stops supplying power to the load, and the load equipment is turned off; at the same time, the second control terminal Pwr_ON outputs a second control signal, and the control switch circuit 8 is turned off, so that the battery 3 stops as The on / off management module 1 provides power.
  • a conversion circuit can also be connected between the output terminal Vout of the battery 3 and the power receiving terminal Vin of the switch management module 1 to convert the voltage output by the battery 3 into the switch management suitable through the conversion circuit. Supply voltage of module 1.
  • a switch circuit is connected between the battery and the switch management module.
  • the second control terminal of the switch management module controls the on / off of the switch circuit, so that the battery is the switch management module.
  • the power switch is triggered.
  • the battery provides instantaneous power to the power management module.
  • the power management signal is detected by the power management module.
  • the control circuit keeps the power on to enable the battery to continuously provide power to the power management module.
  • the load provides power and realizes the startup management of the load equipment. When shutting down, the power switch can be triggered for more than a predetermined time.
  • the switch management module detects a shutdown signal, controls the load switch to turn off to stop the battery from supplying power to the load, and controls the switch circuit to open to stop the battery. Provide power for the switch management module, and realize the shutdown management of the load equipment. By disconnecting the switch circuit in the off state, the battery no longer provides power to the power management module, so that the battery power consumption is minimized in the off state, which maximizes the battery's power retention time in the off state and more Conducive to long-term storage, transportation and use of battery-powered equipment in emergency situations.
  • the power management circuit may further include a self-locking circuit 6.
  • the self-locking circuit 6 is connected between the second control terminal Pwr_ON of the switch management module 1 and the control terminal c of the switch circuit 8, and is used to maintain the switch circuit 8 in response to a fourth control signal output from the second control terminal Pwr_ON.
  • the switch circuit 8 In the on state, the switch circuit 8 is maintained in the off state in response to a second control signal output from the second control terminal Pwr_ON.
  • the switch circuit 8 may be set to be turned on when a low-level signal is input to the control terminal c thereof.
  • the self-locking circuit 6 may be implemented by a first switching tube Q1, which is connected between the control terminal c of the switching circuit 8 and the ground, and the control electrode b of the first switching tube Q1 is connected to the second of the switch management module 1
  • the control terminal Pwr_ON is connected, and Q1 can be controlled to be turned on or off according to a control signal output from the second control terminal Pwr_ON to maintain the switch circuit 8 in an on state or an off state.
  • the power-on / off management module 1 When the power-on / off management module 1 detects the power-on signal, its second control terminal Pwr_ON outputs a fourth control signal to turn on Q1 to complete the power-on self-lock. At this time, the switch circuit 8 remains on, and the battery 3 and the power The management module 1 is turned on, so that the battery 3 continues to provide power to the on / off management module 1.
  • the power-on / off management module 1 When the power-on / off management module 1 detects a shutdown signal, its second control terminal Pwr_ON outputs a second control signal to release Q1 from the self-locking state and maintain a high-impedance state, and the switch circuit 8 is turned off, thereby disconnecting the battery 3 and the power-on / off management module 1 When disconnected, the battery 3 no longer provides power to the power management module 1 and the battery 3 enters a low power consumption state.
  • the battery management circuit controls the on and off states of the switch circuit by controlling the self-locking circuit, thereby turning on or off the battery and the switch management module.
  • the self-locking circuit When powering on, the self-locking circuit is powered on and self-locking to keep the switching circuit on, so that the battery continues to provide power to the switch management module.
  • the self-locking circuit releases the self-locking and disconnects the switching circuit. No longer provides power for the switch management module and enters a low power consumption state, so that the power consumption of the battery can be minimized in the off state.
  • the power management circuit further includes a conversion circuit 5 and an isolation circuit 7.
  • the conversion circuit 5 is connected between the switch circuit 8 and the power receiving terminal Vin of the switch management module 1 for converting the voltage output by the battery 3 into a power supply voltage suitable for the switch management module 1.
  • the self-locking circuit 6 includes a first A switch Q1 is connected between the control terminal c of the switch circuit 8 and the ground, and the control electrode b thereof is connected to the second control terminal Pwr_ON of the switch management module 1 through the self-locking resistor R2.
  • the isolation circuit 7 includes a first diode D1 and a second diode D2, and the anode of D1 is connected to the detection terminal Key_N of the switch management module 1, the anode of D2 is connected to the control terminal c of the switch circuit 8, and the cathodes of D1 and D2 are connected At the second end a2 of the power switch 4, the first end a1 of the power switch 4 is grounded.
  • the isolation circuit 7 is used to isolate the signal at the detection terminal Key_N and the signal at the BAT_EN_N terminal to prevent mutual interference between the signal at the Key_N terminal and the signal at the BAT_EN_N terminal when the power switch 4 is released.
  • the power management circuit uses the second switching transistor Q3 as the switching circuit 8, and Q3 may be, for example, a MOS transistor.
  • the power input terminal 21 of the load switch 2 is connected to the output terminal Vout of the battery through Q3, and the power input terminal 21 is connected to the input terminal of the conversion circuit 5.
  • the first switch Q1 is connected to the control pole (that is, the control terminal c) of Q3 and the ground. Between them, the control of Q3 is connected to the anode of D2.
  • the power switch 4 when the power is turned on, the power switch 4 is pressed, and D2 is turned on to ground the control electrode c. At this time, the control electrode c is at a low level and Q3 is turned on so that the power output from the battery 3 can be provided to the conversion circuit 5.
  • the conversion circuit 5 also converts the voltage of the power output from the battery 3 into the power supply voltage of the switch management module 1. For example 3.3V. Then, the power supply voltage is input to the power receiving terminal Vin of the switch management module 1. After the switch management module 1 is powered on, the signal at the Pwr_ON terminal is set to a high level, and Q1 is turned on to complete the power-on self-locking.
  • the switch management module 1 controls the load switch 2 to be turned on through the EN terminal, that is, the main power switch in the device is turned on, thereby turning on the device.
  • D1 When shutting down, long press the power switch 1, D1 is turned on to pull the Key_N terminal low.
  • the switch management module 1 detects that the Key_N terminal has been pulled down for more than a predetermined time, that is, when a shutdown signal is detected, the Pwr_ON terminal is turned off. The signal is set to low level, and at the same time, the load switch 2 is controlled to be turned off through the EN terminal to stop supplying power to the load.
  • Q1 is in a high-impedance state and self-locking is released.
  • Q3 When the power switch 1 is released, Q3 is turned off, and the power transmission between the battery 3 and the external circuit is cut off.
  • the current consumption of the external circuit is close to 0, and the battery enters a low power consumption state. Therefore, the power consumption of the battery 3 is minimized in the off state, and the power of the battery 3 can be maintained for a long time, thereby ensuring that the battery 3 can be normally turned on after long-term storage.
  • Q3 can be connected to the battery 3 through the battery protection board 32. In this way, when the device is turned off, the power supply of the battery 3 to the internal battery protection board 32 may not be turned off, and the external power output of the battery 3 is cut off through Q3, so that the external power consumption of the battery 3 is minimized when the device is turned off.
  • the battery management circuit uses a second switching tube connected between the output end of the battery and the input end of the conversion circuit as the switching circuit, and the control electrode of the second switching tube is used as the control end of the switching circuit, and the power of the load switch is The input end is connected to the input end of the conversion circuit; when the power is turned on, the control of the second switch tube is controlled to a very low level through a combination of soft switches and hard switches, so that the second switch tube is turned on to provide power to the conversion circuit; When shutting down, the combination of soft and hard switches controls the control of the second switch tube to a very high-impedance state to disconnect the second switch tube, thereby cutting off the power transmission between the battery and the external circuit.
  • the on-off management of battery-powered equipment is realized; on the other hand, the battery is put into a low-power state by shutting off the power transmission between the battery and external circuits in the off state, which prolongs the battery power in the off state Holding time is beneficial for long-term storage, transportation, and emergency use of battery-powered equipment.
  • the power management circuit also uses the second switching transistor Q3 as the switching circuit 8, but is different from the embodiment shown in FIG. 11 in that the input terminal of the conversion circuit 5 is connected to the output terminal Vout of the battery 5 through Q3, and The power input terminal 21 of the load switch 2 is directly connected to the output terminal Vout of the battery 3, and its structure is shown in FIG. 12.
  • the battery 3 can always provide power to the load switch 2.
  • the signal at the EN terminal is used to control the load switch 2 to supply power to the load.
  • the second switch Q3 only controls the output of the conversion circuit 5 and the battery 3. Connect or disconnect between terminals. Specifically, when Q3 is turned on, the Q3 is turned on so that the power output from the battery 3 can be provided to the conversion circuit 5, and when Q3 is turned off, the Q3 is turned off to cut off the power transmission between the battery 3 and the conversion circuit 5, so that the battery 3 enters Low power state.
  • the battery management circuit provided in this embodiment uses a second switching tube connected between the output end of the battery and the input end of the conversion circuit as the switching circuit, and the control electrode of the second switching tube is used as the control end of the switching circuit, and the power of the load switch is The input end is directly connected to the output end of the battery; when the power is turned on, the control of the second switch tube is controlled to a very low level through a combination of soft switches and hard switches, so that the second switch tube is turned on to provide power for the conversion circuit; When shutting down, through the combination of soft switches and hard switches, the control of controlling the second switch tube is extremely high-impedance state to disconnect the second switch tube, thereby cutting off the power transmission between the battery and the conversion circuit.
  • the on / off management of the battery-powered equipment is realized; on the other hand, the battery enters a low power consumption state by cutting off the power transmission between the battery and the conversion circuit in the off state, which prolongs the battery power in the off state Holding time is beneficial for long-term storage, transportation, and emergency use of battery-powered equipment.
  • a low-level signal is input to the enable end of the battery protection board or a low-level signal is input to the control end of the switch circuit.
  • the power management circuit also provides power.
  • the battery protection board can be designed to enable the battery to output power when other signals are input, such as high-level signals; similarly, the switch circuit can also be turned on when other signals are input to its control terminal, such as when high-level signals are input. Turn on, not limited to low-level signals.

Landscapes

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

Abstract

一种电源管理电路，包括开关机管理模块、电池和负载开关；开关机管理模块的检测端用于检测开机或关机信号，第一控制端连接负载开关，第二控制端连接电池保护板，当其检测到关机信号时，控制负载开关关断以停止为负载供电，且控制电池保护板关断电池的电能输出；当检测到开机信号时，控制电池保护板导通以使电池持续为开关机管理模块供电，且控制负载开关闭合以为负载供电。本申请同时提供另一种电源管理电路，其在电池和开关机管理模块之间连接有开关电路，通过控制开关电路的导通或断开来导通或切断电池与开关机管理模块的通电。能够实现电池供电设备的开关机管理，使电池在关机状态下不再为开关机管理模块供电，从而降低了电池功耗。

Description

一种电源管理电路 技术领域
本申请涉及电池供电设备技术领域，具体涉及一种电源管理电路。
背景技术
随着科技的进步和生活质量要求的提高，各行各业中涌现出了各种各样的电子设备，对便捷式电子设备和可移动电子设备的需求也越来越多。比如，在医疗领域，当医疗设备的应用范围由医院扩展到紧急应变和家庭医疗环境时，它的移动性和便捷性将显得尤为重要和突出；此外，在医院内的医疗设备也经常需要电池的支持，比如超声设备、血液分析仪等，以方便患者在不同的病房中转移。在这种情况下，就需要电池为这些电子设备进行供电。
目前，对于需要供电的设备而言，为了支持设备的开关机管理，设备在关机的状态下仍需要电池为开关机管理模块(微控制单元(Microcontroller Unit，MCU)及其外围电路供电。通常情况下，虽然开关机管理模块已经进行了低功耗的设计，但在关机状态下，开关机管理模块仍然会一直处于工作状态，从而不断地消耗电池的能量，这样，当设备长时间存储、闲置或者运输的时候，电池将处于一直放电的状态，从而导致电池过放甚至损坏电池。
发明内容
本申请提供一种电源管理电路，以实现电池供电设备的开机和关机功能，并在电池供电设备处于关机状态时，降低电池的功耗。
根据第一方面，一种实施例中提供一种电源管理电路，包括：开关机管理模块，负载开关，电池；
该电池包括电芯和电池保护板，该电池保护板用于根据输入的电平信号控制电池的电能输出；
该开关机管理模块包括受电端、检测端、第一控制端和第二控制端；
该受电端用于获取电池输入的电能，该检测端用于检测开机或关机 信号；
该第一控制端连接该负载开关，该第二控制端连接该电池保护板；
当该开关机管理模块检测到关机信号时，该第一控制端输出第一控制信号，以控制该负载开关关断，停止为负载提供电能；该第二控制端输出第二控制信号，以控制该电池保护板关断该电池的电能输出。
进一步的，当该开关机管理模块检测到开机信号时，该第一控制端输出第三控制信号，以控制该负载开关闭合，为负载提供电能；该第二控制端输出第四控制信号，以控制该电池保护板导通，使该电池保持输出电能的状态。
根据第二方面，一种实施例中提供一种电源管理电路，包括：开关机管理模块，负载开关，电池和开关电路；
该开关电路连接在该电池和开关机管理模块之间，该开关电路用于根据输入的电平信号控制电池的电能输出；
该开关机管理模块包括受电端、检测端、第一控制端和第二控制端；
该受电端用于获取电池输入的电能，该检测端用于检测开机或关机信号；
该第一控制端连接该负载开关，该第二控制端连接该开关电路的控制端；
当该开关机管理模块检测到关机信号时，该第一控制端输出第一控制信号，以控制该负载开关关断，停止为负载提供电能；该第二控制端输出第二控制信号，以控制该开关电路关断该电池的电能输出。
进一步的，当该开关机管理模块检测到开机信号时，该第一控制端输出第三控制信号，以控制该负载开关闭合，为负载提供电能；该第二控制端输出第四控制信号，以控制该开关电路导通，使该电池保持输出电能的状态。
依据上述实施例的电源管理电路，当开关机管理模块检测到关机信号时，控制负载开关关断，以停止为负载提供电能，且控制电池保护板或者连接在电池和开关机管理模块之间的开关电路关断电池的电能输出；当开关机管理模块检测到关机信号时，控制负载开关闭合，为负载提供电能，且控制电池保护板或者连接在电池和开关机管理模块之间的开关电路导通，以使电池保持输出电能的状态。实现了电池供电设备的 开机和关机管理，同时，使得在关机状态下开关机管理模块不再消耗电池的电能，从而降低了电池功耗。
附图说明
图1为本发明一种实施例提供的电源管理电路的结构示意图；
图2为本发明实施例提供的电池的内部结构示意图；
图3为本发明一种实施例提供的一种具体的电源管理电路的结构示意图；
图4为本发明一种实施例提供的另一种具体的电源管理电路的结构示意图；
图5为本发明一种实施例提供的又一种具体的电源管理电路的结构示意图；
图6为本发明一种实施例中开机过程和关机过程的流程图；
图7a为本发明一种实施例中开机过程的时序图；
图7b为本发明一种实施例中关机过程的时序图；
图8为本发明另一种实施例提供的电源管理电路的结构示意图；
图9为本发明另一种实施例提供的一种具体的电源管理电路的结构示意图；
图10为本发明另一种实施例提供的另一种具体的电源管理电路的结构示意图；
图11为本发明另一种实施例提供的又一种具体的电源管理电路的结构示意图；
图12为本发明另一种实施例提供的再一种具体的电源管理电路的结构示意图。
具体实施方式
下面通过具体实施方式结合附图对本申请作进一步详细说明。其中不同实施方式中类似元件采用了相关联的类似的元件标号。在以下的实施方式中，很多细节描述是为了使得本申请能被更好的理解。然而，本领域技术人员可以毫不费力的认识到，其中部分特征在不同情况下是可以省略的，或者可以由其他元件、材料、方法所替代。
本文中为部件所编序号本身，例如“第一”、“第二”等，仅用于区分 所描述的对象，不具有任何顺序或技术含义。而本申请所说“连接”、“联接”，如无特别说明，均包括直接和间接连接(联接)。
在本申请实施例中，当开关机管理模块检测到关机信号时，第一控制端输出第一控制信号，以控制负载开关关断，停止为负载提供电能，且第二控制端输出第二控制信号以控制电池保护板关断电池的电能输出。或者，在电池与开关机管理模块之间连接一开关电路，当开关机管理模块检测到关机信号时，第一控制端输出第一控制信号，以控制负载开关关断，停止为负载提供电能，且第二控制端输出第二控制信号，以控制开关电路关断电池的电能输出。
一个实施例中，提供了一种电源管理电路，其结构示意图可参见图1，该电源管理电路包括开关机管理模块1、负载开关2和电池3。其中，电池3包括电芯31和电池保护板32，该电池保护板32用于根据输入的电平信号控制电池3的电能输出；开关机管理模块1包括受电端Vin、检测端Key_N、第一控制端EN和第二控制端Pwr_ON，其中的受电端Vin与电池3的输出端Vout连接，用于获取电池3的电能，检测端Key_N用于检测开机或关机信号，第一控制端EN连接负载开关2，第二控制端Pwr_ON与电池保护板连接。当开关机管理模块1检测到关机信号时，其第一控制端EN输出第一控制信号，以控制负载开关2关断，停止为负载提供电能，同时，其第二控制端Pwr_ON输出第二控制信号，以控制电池保护板32关断电池3的电能输出，从而停止为开关机管理模块1提供电能。当开关机管理模块1检测到开机信号时，其第一控制端EN输出第三控制信号，以控制负载开关2闭合，使电池3为负载提供电能，同时，其第二控制端Pwr_ON输出第四控制信号以控制电池保护板32导通，使电池3保持输出电能的状态。
在实际的电路设计中，Key_N端与受电端Vin之间还连接有一上拉电阻R1，用于给Key_N端提供一上拉电压，以在关机状态下保证Key_N端为高电平。
具体的，负载开关2包括电能输入端21、控制端22和电能输出端23，其电能输入端21与电池3的输出端Vout连接，控制端22与开关机管理模块1的第一控制端EN连接，电能输出端23与负载连接，该负载开关2在其控制端22输入第三控制信号时导通，以将电池3输出的电能提供给负载。
具体的，对于电池3而言，其内部结构可参见图2，如图2所示，电池3包括电芯31和电池保护板32，电池保护板32通常由控制芯片B和开关管Q2构成。开关管Q2连接在电芯31的输出端和电池3的输出端Vout之间，其控制端d连接控制芯片B的控制端e，以在控制端e的控制下导通或断开；控制芯片B用于监控电池3的电量，以及通过检测电池3的电压、输出电流和电芯温度等信息来在电池3过压、过流、输出短路及过温等情况下断开开关管Q2，从而起到保护电芯31的作用。控制芯片B比如可以是型号为BQ20Z95DBT的芯片，Q2比如可以是MOS(Metal Oxide Semiconductor，金属-氧化物-半导体)场效应管。
如此，可以将电池保护板的使能端BAT_EN_N引出来，开关机管理模块1的第二控制端Pwr_ON通过控制使能端BAT_EN_N来控制Q2的导通或断开，以此来使电池3保持输出电能的状态或关断电池3的电能输出。比如，电池保护板的控制芯片B使用芯片BQ20Z95DBT时，可以将该芯片的在位信号PRES当作使能端BAT_EN_N。当外部电路控制BAT_EN_N为低电平时，控制芯片B便会控制开关管Q2导通，从而使电池3向外输出电能；当外部电路控制BAT_EN_N为高阻态时，控制芯片B控制开关管Q2断开，电池3不再输出电能，同时，电池保护板32进入低功耗模式。
在实际的应用中，电源管理电路还包括电源开关4，该电源管理电路的结构示意图参见图3，其中，电源开关4包括第一端a1和第二端a2，其第一端a1接地，第二端a2与电池保护板32连接，该电源开关4用于在被触发时将第二端a2连接到地，在触发停止后将第二端a2与地断开；开关机管理模块1的检测端Key_N与电源开关4的第二端a2连接，用于检测电源开关提供的开机信号或关机信号。具体的，电源开关4的第二端a2与电池保护板32的使能端BAT_EN_N连接。
基于图3所示的电源管理电路，在开机时，触发电源开关4(即为开机信号)，电池保护板的使能端BAT_EN_N被瞬间拉低，即电池保护板的使能端BAT_EN_N被瞬间输入低电平，此时，电池保护板32的开关管Q2导通，电池3输出电能，为开关机管理模块1的供电端Vin施加供电电压。这时，开关机管理模块1检测到开机信号，其第二控制端Pwr_ON输出第四控制信号，控制电池保护板32保持导通，以使电池3维持在输出电能的状态，从而使电池3持续为开关机管理模块1提供电 能；同时，开关机管理模块1的第一控制端EN输出第三控制信号，以控制负载开关2闭合，使电池3为负载提供电能，负载设备开启。在关机时，可以触发电源开关4且超过预定时间(即为关机信号)，比如，触发电源开关4且维持3秒以上。关机信号也可以通过其他方式触发，例如手势触发或者语音触发等等，此处不做限定。此时，开关机管理模块1在通电状态下检测到关机信号，其第一控制端EN输出第一控制信号，控制负载开关2关断，电池3停止为负载提供电能，负载设备关闭；同时，第二控制端Pwr_ON输出第二控制信号，控制电池保护板32关断电池3的电能输出，从而使电池3停止为开关机管理模块1提供电能，这时，开关机管理模块1不再消耗电池3的电能，电池3进入低功耗状态。
在实际应用中，电池3的输出端Vout和开关机管理模块1的受电端Vin之间还可以连接一转换电路，以通过该转换电路将电池3输出的电压转换为适配于开关机管理模块1的供电电压。
本实施例提供的电源管理电路，通过开关机管理模块的第二控制端控制电池保护板的使能端以使电池向外输出电能或关闭电池的电能输出。在开机时，触发电源开关，电池为开关机管理模块提供瞬时电能，开关机管理模块检测到开机信号，通过控制电池保护板的使能端使电池维持输出电能的状态，以使电池为开关机管理模块持续提供电能，同时控制负载开关闭合以使电池为负载提供电能，从而实现了负载设备的开机管理。在关机时，可以触发电源开关且超过预定时间，此时，开关机管理模块检测到关机信号，控制负载开关关断以使电池停止为负载提供电能，且通过控制电池保护板的使能端以关闭电池向外输出电能，从而使电池停止为开关机管理模块提供电能，实现了负载设备的关机管理。通过在关机状态下关断电池的电能输出，使电池不再为开关机管理模块提供电能，从而使得电池的功耗在关机状态下达到最小，最大限度地延长了电池在关机情况下电能的保持时间，更有利于电池供电设备的长时间存储、运输以及应急情况下的使用。
一个实施例中，提供了另一种具体的电源管理电路，其结构示意图参见图4，与图3不同的是，该电源管理电路还包括自锁电路6。其中，自锁电路6连接在开关机管理模块1的第二控制端Pwr_ON和电池保护板32的使能端BAT_EN_N之间，用于响应于第二控制端Pwr_ON输出 的第四控制信号将电池3维持在输出电能的状态，响应于第二控制端Pwr_ON输出的第二控制信号将电池3维持在关闭电能输出的状态。
具体的，在实际应用中，自锁电路6可以由第一开关管Q1实现，该第一开关管Q1连接在电池保护板的使能端BAT_EN_N和地之间，其控制极b与开关机管理模块1的第二控制端Pwr_ON连接，可根据第二控制端Pwr_ON输出的控制信号控制Q1导通或截止，以将电池保护板的使能端BAT_EN_N维持在低电平或高阻状态，从而使电池3维持在持续输出电能的状态或关闭电能输出的状态。
当开关机管理模块检测到开机信号时，其第二控制端Pwr_ON输出第四控制信号使Q1导通完成上电自锁，此时，Q1保持导通状态，使电池保护板32的使能端BAT_EN_N维持在低电平状态，从而使电池3保持在输出电能的状态，进而使电池3持续为开关机管理模块1提供电能。当开关机管理模块检测到关机信号时，其第二控制端Pwr_ON输出第二控制信号使Q1解除自锁状态，此时，电池保护板32的使能端BAT_EN_N为高阻状态，从而使电池保护板32关断电池3的电能输出，电池3不再为开关机管理模块1提供电能，且电池3进入低功耗状态。
本实施例提供的电池管理电路通过控制电池保护板的使能信号来控制电池输出电能或关闭电池的电能输出。在开机时，自锁电路上电自锁，使电池保护板的使能端维持在低电平状态，从而使电池持续为开关机管理模块提供电能；在关机时，自锁电路解除自锁，使电池保护板的使能端变为高阻状态，从而关断电池的电能输出，电池不再为开关机管理模块提供电能且进入低功耗状态，使得电池的功耗在关机状态下达到最小。
一个实施例中，提供了又一种具体的电源管理电路，其结构示意图参见图5，与图4所示实施例不同的是，该电源管理电路还包括转换电路5和隔离电路7。其中，电池保护板32的使能端BAT_EN_N作为控制电池3输出电能和关断电能输出的控制端；转换电路5连接在电池保护板32的输出端Vout和开关机管理模块1的受电端Vin之间，可以将电池3输出的电压转换为适配于开关机管理模块1的供电电压。比如，开关机管理模块1由MCU(Microcontroller Unit，微控制单元)构成，其供电电压(即工作电压)为3.3V，那么，转换电路5便会将电池3输出的电压转换为3.3V输入给开关机管理模块1的受电端Vin，以使开关机管理模块1正常工作。自锁电路6包括第一开关管Q1，其连接在电池 保护板32的使能端BAT_EN_N和地之间，其控制极b通过自锁电阻R2与开关机管理模块1的第二控制端Pwr_ON连接。隔离电路7包括第一二极管D1和第二二极管D2，D1的阳极连接开关机管理模块1的检测端Key_N，D2的阳极连接电池保护板32的使能端BAT_EN_N，D1和D2的阴极连接在电源开关4的第二端a2，电源开关4的第一端a1接地。隔离电路7用于隔离检测端Key_N的信号与BAT_EN_N端的信号，以防止在电源开关4松开时Key_N端的信号与BAT_EN_N端的信号之间产生相互干扰。
在实际的电路设计中，Key_N端与供电端Vin之间还连接有一上拉电阻R1，用于给Key_N端提供一上拉电压，在电源开关4未触发时保证Key_N端为高电平。
基于图5所示的电源管理电路，在实际应用中，可以设置使能端BAT_EN_N为低电平时电池3的输出端Vout输出电能，设置BAT_EN_N为高阻态时断开Q2以关断电池3的输出并让电池保护板32进入低功耗状态。图6示出了开机过程和关机过程的流程图，图7a和图7b分别示出了开机过程和关机过程的时序图，如图6所示，开机过程包括流程①、②和③，关机过程包括流程④和⑤，结合图5及图7a和图7b，其开机过程具体为：
①开机时，按下电源开关4(相当于硬开关)，D2导通使BAT_EN_N接地，这时，BAT_EN_N端为低电平，电池3的输出端Vout输出电能，转换电路5将Vout端的电压转换为开关机管理模块1的供电电压，比如3.3V，并将该供电电压输入开关机管理模块1的供电端Vin，开关机管理模块1上电后第一时间将Pwr_ON端的信号设置为高电平(相当于软开关)，Q1导通完成上电自锁；
②此时，Q1将保持导通状态，从而使电池3的输出端Vout维持输出电能的状态，电池3将持续为开关机管理模块1供电；
③开关机管理模块1通过EN端控制负载开关2导通，即开启设备内的主电源开关，从而为负载供电，完成设备的开启。
其关机过程具体为：
④关机时，长按电源开关4，D1导通而将Key_N端拉低，当开关机管理模块1检测到Key_N端被拉低的时间超过预定时间时，比如，长按电源开关4超过3秒，开关机管理模块1检测到Key_N端被拉低3秒 以上，此时，开关机管理模块1会将Pwr_ON端的信号置为低电平，同时通过EN端控制负载开关2断开，以停止为负载提供电能；
⑤Q1解除自锁状态，当松开电源开关4时，BA_EN_N为高阻状态，Q2断开，电池3的输出关断，且电池保护板32进入低功耗状态。
此时，电池3外部的电路将不再消耗电池3的电能，即外部电路的电流消耗接近为0，这样便使得关机状态下电池3的电能消耗达到最小，从而使得电池3的电能可以维持较长的时间，保证了电池3在长时间存放后依然可以正常开机。
本实施例提供的电池管理电路通过控制电池保护板的使能信号来控制电池输出电能或关闭电池的电能输出。在开机时，通过软开关和硬开关的结合，控制电池保护板的使能端为低电平，以控制电池输出电能。在关机时，通过软开关和硬开关的结合，控制电池保护板的使能端为高阻态，以关闭电池的电能输出且使电池保护板进入低功耗状态。一方面，实现了电池供电设备的开关机管理；另一方面，在关机状态下关闭了电池的电能输出，使得电池的功耗达到最小，最大限度地延长了电池在关机状态下的电量保持时间，有利于电池供电设备的长时间存储、运输以及应急情况下的使用。
在实际应用中，可以不关闭电池内部的电池保护板的供电，而是通过电池外部的开关电路来导通或切断电池与外部电路的通电。一个实施例中，图8示出了另一种电源管理电路的结构示意图，该电源管理电路包括开关机管理模块1、负载开关2、电池3和开关电路8。其中，开关电路8连接在电池3和开关机管理模块1之间，用于根据输入的电平信号控制电池的电能输出。具体的，开关机管理模块1包括受电端Vin、检测端Key_N、第一控制端EN和第二控制端Pwr_ON，开关电路8连接在电池3的输出端Vout和开关机管理模块1的受电端Vin之间；开关机管理模块1的受电端Vin用于获取电池3输入的电能，检测端Key_N用于检测开机或关机信号，第一控制端EN连接负载开关2，第二控制端Pwr_ON与开关电路8的控制端c连接。当开关机管理模块1检测到关机信号时，其第一控制端EN输出第一控制信号，以控制负载开关2关断，使电池3停止为负载提供电能，同时，其第二控制端Pwr_ON输出第二控制信号，以控制开关电路8关断电池3的电能输出，从而使电池3停止为开关机管理模块1提供电能。当开关机管理模块1检测到开 机信号时，其第一控制端EN输出第三控制信号，以控制负载开关2闭合，使电池3为负载提供电能，同时，其第二控制端Pwr_ON输出第四控制信号以控制开关电路8导通，以使电池3保持输出电能的状态，为开关机管理模块4持续提供电能。
在实际的电路设计中，Key_N端与受电端Vin之间还连接有一上拉电阻R1，用于给Key_N端提供一上拉电压，以在关机状态下保证Key_N端为高电平。
具体的，负载开关2包括电能输入端21、控制端22和电能输出端23，其电能输入端21可以直接与电池3的输出端Vout连接(如图8所示)，也可通过开关电路8与电池3的输出端Vout连接；其控制端22与开关机管理模块1的第一控制端EN连接，电能输出端23与负载连接，该负载开关2在其控制端22输入第三控制信号时导通，以将电池3输出的电能提供给负载。
在实际的应用中，该电源管理电路还包括电源开关4，其结构示意图参见图9，其中，电源开关4包括第一端a1和第二端a2，其第一端a1接地，第二端a2与开关电路8的控制端c连接，该电源开关4用于在被触发时将第二端a2连接到地，在触发停止后将第二端a2与地断开。开关机管理模块1的检测端Key_N与电源开关4的第二端a2连接，用于检测电源开关4提供的开机信号或关机信号。
基于图9所示的电源管理电路，在开机时，触发电源开关4，开关电路8的控制端c被瞬间拉低，即控制端c被瞬间输入低电平。此时，开关电路8导通，将电池3和开关机管理模块1接通，电池3为开关机管理模块1的供电端Vin施加供电电压。这时，开关机管理模块1检测到开机信号，其第二控制端Pwr_ON输出第四控制信号，控制开关电路8保持导通，以使电池3持续为开关机管理模块1提供电能；同时，开关机管理模块1的第一控制端EN输出第三控制信号，以控制负载开关2闭合，使电池3为负载提供电能，负载设备开启。在关机时，可以触发电源开关4且超过预定时间，比如，触发电源开关4且维持3秒以上，此时，开关机管理模块1在通电状态下检测到关机信号，其第一控制端EN输出第一控制信号，控制负载开关2关断，电池3停止为负载提供电能，负载设备关闭；同时，第二控制端Pwr_ON输出第二控制信号，控制开关电路8断开，从而使电池3停止为开关机管理模块1提供电能。
在实际应用中，电池3的输出端Vout和开关机管理模块1的受电端Vin之间还可以连接一转换电路，以通过该转换电路将电池3输出的电压转换为适配于开关机管理模块1的供电电压。
本实施例提供的电源管理电路，电池和开关机管理模块之间连接有开关电路，通过开关机管理模块的第二控制端控制开关电路的导通或断开，以使电池为开关机管理模块提供电能或关断电池的电能输出。在开机时，触发电源开关，电池为开关机管理模块提供瞬时电能，开关机管理模块检测到开机信号，通过控制开关电路保持导通以使电池为开关机管理模块持续提供电能，同时控制电池为负载提供电能，实现了负载设备的开机管理。在关机时，可以触发电源开关且超过预定时间，此时，开关机管理模块检测到关机信号，控制负载开关关断以使电池停止为负载提供电能，且控制开关电路断开，以使电池停止为开关机管理模块提供电能，实现了负载设备的关机管理。通过在关机状态下断开开关电路使电池不再为开关机管理模块提供电能，从而使得电池的功耗在关机状态下达到最小，最大限度地延长了电池在关机情况下电能的保持时间，更有利于电池供电设备的长时间存储、运输以及应急情况下的使用。
一个实施例中，提供了另外一种具体的电源管理电路，其结构示意图参见图10，与图9不同的是，该电源管理电路还可包括自锁电路6。其中，自锁电路6连接在开关机管理模块1的第二控制端Pwr_ON和开关电路8的控制端c之间，用于响应于第二控制端Pwr_ON输出的第四控制信号将开关电路8维持在导通状态，响应于第二控制端Pwr_ON输出的第二控制信号将开关电路8维持在断开状态。实际应用中，可设置开关电路8在其控制端c输入低电平信号时导通。
具体的，自锁电路6可以由第一开关管Q1来实现，该第一开关管Q1连接在开关电路8的控制端c和地之间，其控制极b与开关机管理模块1的第二控制端Pwr_ON连接，可根据第二控制端Pwr_ON输出的控制信号控制Q1导通或截止，以将开关电路8维持在导通状态或断开状态。
当开关机管理模块1检测到开机信号时，其第二控制端Pwr_ON输出第四控制信号使Q1导通完成上电自锁，此时，开关电路8保持导通状态，将电池3和开关机管理模块1接通，从而使电池3持续为开关机管理模块1提供电能。当开关机管理模块1检测到关机信号时，其第二 控制端Pwr_ON输出第二控制信号使Q1解除自锁状态保持高阻态，开关电路8断开，从而将电池3和开关机管理模块1断开，电池3不再为开关机管理模块1提供电能，电池3进入低功耗状态。
本实施例提供的电池管理电路通过控制自锁电路来控制开关电路的导通和关断状态，以此来导通或切断电池与开关机管理模块的通电。在开机时，自锁电路上电自锁，使开关电路保持导通状态，从而使电池持续为开关机管理模块提供电能；在关机时，自锁电路解除自锁，使开关电路断开，电池不再为开关机管理模块提供电能且进入低功耗状态，使得电池的功耗在关机状态下能够达到最小。
一个实施例中，提供了又一种具体的电源管理电路，其结构示意图参见图11，与图10所示实施例不同的是，该电源管理电路还包括转换电路5和隔离电路7，其中，转换电路5连接在开关电路8和开关机管理模块1的受电端Vin之间，用于将电池3输出的电压转换为适配于开关机管理模块1的供电电压；自锁电路6包括第一开关管Q1，其连接在开关电路8的控制端c和地之间，其控制极b通过自锁电阻R2与开关机管理模块1的第二控制端Pwr_ON连接。隔离电路7包括第一二极管D1和第二二极管D2，D1的阳极连接开关机管理模块1的检测端Key_N，D2的阳极连接开关电路8的控制端c，D1和D2的阴极连接在电源开关4的第二端a2，电源开关4的第一端a1接地。隔离电路7用于隔离检测端Key_N的信号与BAT_EN_N端的信号，以防止在电源开关4松开时Key_N端的信号与BAT_EN_N端的信号之间产生相互干扰。
在本实施例中，该电源管理电路以第二开关管Q3作为开关电路8，Q3比如可以是MOS管。负载开关2的电能输入端21通过Q3与电池的输出端Vout连接，且电能输入端21连接转换电路5的输入端，第一开关管Q1连接在Q3的控制极(即控制端c)和地之间，Q3的控制极与D2的阳极连接。
基于图11所示的电源管理电路，在开机时，按下电源开关4，D2导通使控制极c接地。这时，控制极c为低电平，Q3导通使得电池3输出的电能能够提供给转换电路5，转换电路5同样将电池3输出的电能的电压转换为开关机管理模块1的供电电压，比如3.3V。然后将该供电电压输入开关机管理模块1的受电端Vin，开关机管理模块1上电后第一时间将Pwr_ON端的信号设置为高电平，Q1导通完成上电自锁。此时， Q1保持导通状态，将控制极f维持在低电平，从而保持Q3的导通状态，以使电池3能够持续为开关机管理模块1供电。之后，开关机管理模块1通过EN端控制负载开关2导通，即开启设备内的主电源开关，从而开启设备。
在关机时，长按电源开关1，D1导通而将Key_N端拉低，当开关机管理模块1检测到Key_N端被拉低的时间超过预定时间时，即检测到关机信号时，将Pwr_ON端的信号置为低电平，同时通过EN端控制负载开关2断开，以停止为负载提供电能。此时，Q1为高阻状态，自锁解除。当松开电源开关1时，Q3断开，切断了电池3与外部电路之间的电能传输，外部电路的电流消耗接近为0，电池进入低功耗状态。从而使得关机状态下电池3的电能消耗达到最小，电池3的电能可以维持较长的时间，保证了电池3在长时间存放后依然可以正常开机。
在实际的电路设计中，Q3可以通过电池保护板32与电池3连接。这样，在设备关机的状态下，可以不关闭电池对其内部电池保护板32的供电，而通过Q3切断电池3对外的电能输出，使关机时电池3对外的功耗达到最小。
本实施例提供的电池管理电路以连接在电池的输出端和转换电路的输入端之间的第二开关管作为开关电路，第二开关管的控制极作为开关电路的控制端，负载开关的电能输入端与转换电路的输入端连接；在开机时，通过软开关和硬开关的结合，控制第二开关管的控制极为低电平，以使第二开关管导通为转换电路提供电能；在关机时，通过软开关和硬开关的结合，控制第二开关管的控制极为高阻态，以断开第二开关管，从而切断电池与外部电路之间的电能传输。一方面，实现了电池供电设备的开关机管理；另一方面，在关机状态下通过切断电池与外部电路之间的电能传输，使电池进入低功耗状态，延长了电池在关机状态下的电量保持时间，有利于电池供电设备的长时间存储、运输以及应急情况下的使用。
一个实施例中，电源管理电路同样以第二开关管Q3作为开关电路8，但与图11所示实施例不同的是，转换电路5的输入端通过Q3与电池5的输出端Vout连接，且负载开关2的电能输入端21直接与电池3的输出端Vout连接，其结构示意图参见图12。
基于图12所示的电源管理电路，电池3可一直为负载开关2提供电 能，通过EN端的信号来控制负载开关2为负载供电，且第二开关管Q3仅控制转换电路5与电池3的输出端之间的导通或断开。具体的，在开机时控制Q3导通以使电池3输出的电能能够提供给转换电路5，在关机时控制Q3断开以切断电池3与转换电路5之间的电能传输，从而使电池3进入低功耗状态。
本实施例提供的电池管理电路以连接在电池的输出端和转换电路的输入端之间的第二开关管作为开关电路，第二开关管的控制极作为开关电路的控制端，负载开关的电能输入端直接与电池的输出端连接；在开机时，通过软开关和硬开关的结合，控制第二开关管的控制极为低电平，以使第二开关管导通为转换电路提供电能；在关机时，通过软开关和硬开关的结合，控制第二开关管的控制极为高阻态，以断开第二开关管，从而切断电池与转换电路之间的电能传输。一方面，实现了电池供电设备的开关机管理；另一方面，在关机状态下通过切断电池与转换电路之间的电能传输，使电池进入低功耗状态，延长了电池在关机状态下的电量保持时间，有利于电池供电设备的长时间存储、运输以及应急情况下的使用。
上述各实施例的电源管理电路在电池保护板的使能端输入低电平信号或者在开关电路的控制端输入低电平信号时为开关机管理模块提供电能，而在实际电路设计中，也可以设计电池保护板的使能端输入其他信号时使电池输出电能，比如高电平信号；同样的，开关电路也可以在其控制端输入其他信号时导通，比如，输入高电平信号时导通，而不限于低电平信号时导通。
以上应用了具体个例对本申请进行阐述，只是用于帮助理解本申请，并不用以限制本申请。对于本申请所属技术领域的技术人员，依据本申请的思想，还可以做出若干简单推演、变形或替换。

Claims (17)

  1. 一种电源管理电路，其特征在于，包括：开关机管理模块，负载开关，电池；
    所述电池包括电芯和电池保护板，所述电池保护板用于根据输入的电平信号控制电池的电能输出；
    所述开关机管理模块包括受电端、检测端、第一控制端和第二控制端；
    所述受电端用于获取电池输入的电能，所述检测端用于检测开机或关机信号；
    所述第一控制端连接所述负载开关，所述第二控制端连接所述电池保护板；
    当所述开关机管理模块检测到关机信号时，所述第一控制端输出第一控制信号，以控制所述负载开关关断，停止为负载提供电能；所述第二控制端输出第二控制信号，以控制所述电池保护板关断所述电池的电能输出。
  2. 根据权利要求1所述的电源管理电路，其特征在于，当所述开关机管理模块检测到开机信号时，所述第一控制端输出第三控制信号，以控制所述负载开关闭合，为负载提供电能；所述第二控制端输出第四控制信号，以控制所述电池保护板导通，使所述电池保持输出电能的状态。
  3. 根据权利要求1所述的电源管理电路，其特征在于，所述电源管理电路还包括电源开关，所述电源开关包括第一端和第二端，所述第一端接地，所述第二端与所述电池保护板连接；所述电源开关用于在被触发时将所述第二端连接到地，在触发停止后将所述第二端与地断开；
    所述开关机管理模块的检测端连接所述电源开关的第二端，用于检测所述电源开关提供的开机或关机信号。
  4. 如权利要求1所述的电源管理电路，其特征在于，所述电源管理电路还包括转换电路；
    所述转换电路连接在电池的输出端和开关机管理模块的受电端之间，用于将电池输出的电压转换为适配于开关机管理模块的供电电压。
  5. 如权利要求1至4中任一项所述的电源管理电路，其特征在于，所述电源管理电路还包括自锁电路，所述自锁电路连接在开关机管理模块的第二控制端和电池保护板之间，用于响应于第二控制端输出的第四 控制信号将电池维持在输出电能的状态，响应于第二控制端输出的第二控制信号将电池维持在关闭电能输出的状态。
  6. 如权利要求5所述的电源管理电路，其特征在于，所述自锁电路包括连接在电池保护板和地之间的第一开关管，第一开关管的控制极与开关机管理模块的第二控制端连接。
  7. 如权利要求1至4中任一项所述的电源管理电路，其特征在于，所述负载开关包括电能输入端、控制端和电能输出端，所述电能输入端与电池的输出端连接，所述控制端与开关机管理模块的第一控制端连接，所述电能输出端与负载连接，所述负载开关在其控制端输入第三控制信号时导通，以将电池输出的电能提供给负载。
  8. 如权利要求3所述的电源管理电路，其特征在于，所述电源管理电路还包括第一二极管和第二二极管，第一二极管的阳极连接开关机管理模块的检测端，第二二极管的阳极连接电池保护板，第一二极管的阴极和第二二极管的阴极连接在电源开关的第二端。
  9. 一种电源管理电路，其特征在于，包括：开关机管理模块，负载开关，电池和开关电路；
    所述开关电路连接在所述电池和开关机管理模块之间，所述开关电路用于根据输入的电平信号控制电池的电能输出；
    所述开关机管理模块包括受电端、检测端、第一控制端和第二控制端；
    所述受电端用于获取电池输入的电能，所述检测端用于检测开机或关机信号；
    所述第一控制端连接所述负载开关，所述第二控制端连接所述开关电路的控制端；
    当所述开关机管理模块检测到关机信号时，所述第一控制端输出第一控制信号，以控制所述负载开关关断，停止为负载提供电能；所述第二控制端输出第二控制信号，以控制所述开关电路关断所述电池的电能输出。
  10. 根据权利要求9所述的电源管理电路，其特征在于，当所述开关机管理模块检测到开机信号时，所述第一控制端输出第三控制信号，以控制所述负载开关闭合，为负载提供电能；所述第二控制端输出第四控制信号，以控制所述开关电路导通，使所述电池保持输出电能的状态。
  11. 根据权利要求9所述的电源管理电路，其特征在于，所述电源管理电路还包括电源开关，所述电源开关包括第一端和第二端，所述第一端接地，所述第二端与所述开关电路的控制端连接；所述电源开关用于在被触发时将所述第二端连接到地，在触发停止后将所述第二端与地断开；
    所述开关机管理模块的检测端连接所述电源开关的第二端，用于检测所述电源开关提供的开机或关机信号。
  12. 如权利要求9所述的电源管理电路，其特征在于，所述电源管理电路还包括转换电路，所述转换电路连接在开关电路和开关机管理模块的供电端之间，用于将电池输出的电压转换为适配于开关机管理模块的供电电压。
  13. 如权利要求9至12中任一项所述的电源管理电路，其特征在于，所述电源管理电路还包括自锁电路，所述自锁电路连接在开关机管理模块的第二控制端和开关电路的控制端之间，用于响应于第二控制端输出的第四控制信号将开关电路维持在导通状态，响应于第二控制端输出的第二控制信号将开关电路维持在断开状态。
  14. 如权利要求13所述的电源管理电路，其特征在于，所述自锁电路包括连接在开关电路的控制端和地之间的第一开关管，第一开关管的控制极与开关机管理模块的第二控制端连接。
  15. 如权利要求9至12中任一项所述的电源管理电路，其特征在于，所述开关电路为第二开关管。
  16. 如权利要求15所述的电源管理电路，其特征在于，所述负载开关包括电能输入端、控制端和电能输出端，所述电能输入端直接或通过第二开关管与电池的输出端连接，所述控制端与开关机管理模块的第一控制端连接，所述电能输出端与负载连接，所述负载开关在其控制端输入第三控制信号时导通，以将电池输出的电能提供给负载。
  17. 如权利要求11所述的电源管理电路，其特征在于，所述电源管理电路还包括第一二极管和第二二极管，第一二极管的阳极连接开关机管理模块的检测端，第二二极管的阳极连接开关电路的控制端，第一二极管的阴极和第二二极管的阴极连接在电源开关的第二端。
PCT/CN2018/103742 2018-09-03 2018-09-03 一种电源管理电路 Ceased WO2020047693A1 (zh)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201880001255.6A CN109417206B (zh) 2018-09-03 2018-09-03 一种电源管理电路
PCT/CN2018/103742 WO2020047693A1 (zh) 2018-09-03 2018-09-03 一种电源管理电路

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2018/103742 WO2020047693A1 (zh) 2018-09-03 2018-09-03 一种电源管理电路

Publications (1)

Publication Number Publication Date
WO2020047693A1 true WO2020047693A1 (zh) 2020-03-12

Family

ID=65462544

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2018/103742 Ceased WO2020047693A1 (zh) 2018-09-03 2018-09-03 一种电源管理电路

Country Status (2)

Country Link
CN (1) CN109417206B (zh)
WO (1) WO2020047693A1 (zh)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111668902A (zh) * 2020-06-19 2020-09-15 东莞新能安科技有限公司 电池装置控制电路
CN111697664A (zh) * 2020-06-30 2020-09-22 深圳优地科技有限公司 机器人的充电保护电路和机器人
CN112070932A (zh) * 2020-09-14 2020-12-11 凌矽电子科技(东莞)有限公司 一种无电池行李箱蓝牙指纹锁装置及无电池开关锁方法
CN112202434A (zh) * 2020-11-12 2021-01-08 昆山书豪仪器科技有限公司 一种开关机自锁电路
CN112639634A (zh) * 2020-05-07 2021-04-09 深圳市大疆创新科技有限公司 开关机控制装置和电子设备
CN113078705A (zh) * 2021-03-22 2021-07-06 深圳拓邦股份有限公司 一种供电控制电路及电子设备
CN118353725A (zh) * 2024-06-14 2024-07-16 中孚安全技术有限公司 一种应用于双主机网络单导的电源异步上电系统及方法
CN118889607A (zh) * 2024-07-15 2024-11-01 江西万年芯微电子有限公司 电芯保护电路及可充电电池
CN120300998A (zh) * 2025-06-12 2025-07-11 深圳市德兰明海新能源股份有限公司 控制器的供电电路及储能电源
CN120710184A (zh) * 2025-08-26 2025-09-26 深圳市普德新星电源技术有限公司 一种开关电路及电子设备

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110034779B (zh) * 2019-04-28 2021-01-05 北京智芯微电子科技有限公司 eMTC通信模组
CN110912107A (zh) * 2019-12-26 2020-03-24 上海派能能源科技股份有限公司 一种用于电池管理系统的开关机电路
CN113303702B (zh) * 2020-02-26 2023-02-24 江苏美的清洁电器股份有限公司 吸尘器电路系统及其供电控制方法及吸尘器
CN114256954B (zh) * 2020-09-22 2024-06-25 海能达通信股份有限公司 控制电路及电池
CN112260337B (zh) * 2020-09-23 2022-07-12 中国电子科技集团公司第五十二研究所 一种锂电池低耗电控制电路
CN112256120A (zh) * 2020-10-20 2021-01-22 维沃移动通信有限公司 保护电路及电子设备
CN112886664B (zh) * 2021-02-02 2024-07-09 维沃移动通信有限公司 电子设备
CN113394467B (zh) * 2021-05-07 2022-07-22 深圳市金研微科技有限公司 一种用于移动终端设备的智能电池
CN113258911B (zh) * 2021-06-03 2025-11-28 梅特勒-托利多仪器（上海）有限公司 开关机控制电路及电子设备
CN113515067B (zh) * 2021-06-09 2022-11-04 青岛海信医疗设备股份有限公司 超声诊断仪、超声诊断仪的开机控制方法及关机控制方法
CN113721147A (zh) * 2021-07-12 2021-11-30 深圳市有为信息技术发展有限公司 车载终端掉电检测控制装置、掉电快速降功耗系统和方法
CN114209093B (zh) * 2021-12-30 2024-04-26 西安稳先半导体科技有限责任公司 一种电池保护电路、电池组件及电子烟
CN115425716A (zh) * 2022-09-23 2022-12-02 维沃移动通信有限公司 电子设备
CN219041762U (zh) * 2022-10-31 2023-05-16 长春吉大正元信息技术股份有限公司 一种低功耗电路及电子设备
CN115755721B (zh) * 2022-11-30 2025-07-25 杭州神络医疗科技有限公司 一种用于植入式设备的开关机控制电路
CN116191349B (zh) * 2022-12-26 2024-10-08 中科可控信息产业有限公司 过压保护电路、服务器的过压保护方法和服务器

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101281419A (zh) * 2007-04-04 2008-10-08 英业达股份有限公司 电脑装置的电源供应模块
CN202083915U (zh) * 2011-02-28 2011-12-21 广州视源电子科技有限公司 零待机功耗的按键开关控制电路
CN207801898U (zh) * 2017-09-22 2018-08-31 厦门亿联网络技术股份有限公司 一种开关机电路

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103309249A (zh) * 2012-03-15 2013-09-18 鸿富锦精密工业（深圳）有限公司 减少待机模式能耗的电子装置
CN108092361A (zh) * 2017-12-26 2018-05-29 深圳市恒浩伟业科技有限公司 低待机功耗的电池保护电路和汽车应急启动电源

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101281419A (zh) * 2007-04-04 2008-10-08 英业达股份有限公司 电脑装置的电源供应模块
CN202083915U (zh) * 2011-02-28 2011-12-21 广州视源电子科技有限公司 零待机功耗的按键开关控制电路
CN207801898U (zh) * 2017-09-22 2018-08-31 厦门亿联网络技术股份有限公司 一种开关机电路

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112639634A (zh) * 2020-05-07 2021-04-09 深圳市大疆创新科技有限公司 开关机控制装置和电子设备
CN111668902A (zh) * 2020-06-19 2020-09-15 东莞新能安科技有限公司 电池装置控制电路
CN111697664A (zh) * 2020-06-30 2020-09-22 深圳优地科技有限公司 机器人的充电保护电路和机器人
CN112070932A (zh) * 2020-09-14 2020-12-11 凌矽电子科技(东莞)有限公司 一种无电池行李箱蓝牙指纹锁装置及无电池开关锁方法
CN112202434A (zh) * 2020-11-12 2021-01-08 昆山书豪仪器科技有限公司 一种开关机自锁电路
CN113078705A (zh) * 2021-03-22 2021-07-06 深圳拓邦股份有限公司 一种供电控制电路及电子设备
CN118353725A (zh) * 2024-06-14 2024-07-16 中孚安全技术有限公司 一种应用于双主机网络单导的电源异步上电系统及方法
CN118889607A (zh) * 2024-07-15 2024-11-01 江西万年芯微电子有限公司 电芯保护电路及可充电电池
CN120300998A (zh) * 2025-06-12 2025-07-11 深圳市德兰明海新能源股份有限公司 控制器的供电电路及储能电源
CN120710184A (zh) * 2025-08-26 2025-09-26 深圳市普德新星电源技术有限公司 一种开关电路及电子设备

Also Published As

Publication number Publication date
CN109417206B (zh) 2022-02-18
CN109417206A (zh) 2019-03-01

Similar Documents

Publication Publication Date Title
WO2020047693A1 (zh) 一种电源管理电路
TW201344418A (zh) 待機喚醒電路及電子裝置
CN108092361A (zh) 低待机功耗的电池保护电路和汽车应急启动电源
CN101465600B (zh) 电子设备及其电源装置
US20190222114A1 (en) Control circuit and display apparatus
CN212725408U (zh) 电池管理电路和电源电路
CN108540115B (zh) 一种低功耗电路和电子装置
US8897044B2 (en) Electronic device having complete power-saving mechanism
AU2003245024A1 (en) Energy saving startup circuit for power supply
TW201525673A (zh) 充斷電控制系統
CN215185914U (zh) 一种应用在电池供电设备中的待机零功耗电路
US20230029478A1 (en) Battery switch-on circuit
CN218974798U (zh) 开关机电路及电子设备
CN107134922B (zh) 一种仪用电源的转换电路
CN201497947U (zh) 一种嵌入式芯片的电源管理电路
CN214670476U (zh) 用于mcu的低功耗电路及储能设备
CN214900195U (zh) 一种掉电自动给电电路
CN205453657U (zh) 开关机电路
CN111669158B (zh) 一种便携式的多功能开关电路
CN115425716A (zh) 电子设备
US20190013694A1 (en) Switching control method for a dual auxiliary power supply
CN217133576U (zh) 一种开关机电路及设备
CN218243492U (zh) 多路开关机电路及摄像设备
CN219145365U (zh) 开关机控制电路及电子设备
CN217982501U (zh) 一种门铃电路

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: 18932904

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205A DATED 080721)

122 Ep: pct application non-entry in european phase

Ref document number: 18932904

Country of ref document: EP

Kind code of ref document: A1