WO2018103221A1 - Appareil et procédé de commutation de circuit d'alimentation électrique - Google Patents

Appareil et procédé de commutation de circuit d'alimentation électrique Download PDF

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Publication number
WO2018103221A1
WO2018103221A1 PCT/CN2017/075770 CN2017075770W WO2018103221A1 WO 2018103221 A1 WO2018103221 A1 WO 2018103221A1 CN 2017075770 W CN2017075770 W CN 2017075770W WO 2018103221 A1 WO2018103221 A1 WO 2018103221A1
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Prior art keywords
power
power supply
power source
switch
unit
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Application number
PCT/CN2017/075770
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English (en)
Chinese (zh)
Inventor
王勋
王龙
Original Assignee
华为技术有限公司
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201780071483.6A priority Critical patent/CN109964385B/zh
Publication of WO2018103221A1 publication Critical patent/WO2018103221A1/fr

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    • 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

Definitions

  • the present application relates to the field of electronic devices and, more particularly, to an apparatus and method for switching power supply circuits in the field of electronic devices.
  • the in-vehicle wireless communication terminal is required to be able to supply power to the battery in the vehicle when the vehicle collides, and the in-vehicle wireless communication terminal can continue to use the internal backup battery to continue the short-term normal work, and continuously provide the GPS center position and vehicle status to the service center. And other information, and can meet the short-term call needs.
  • GPS Global Positioning System
  • the existing power supply switching method of the in-vehicle wireless communication terminal has the following disadvantages: (1) depending on the software logic, there is a problem that the vehicle battery cannot be powered but cannot quickly open the backup battery power supply path, which may result in a system of the back end in an emergency situation.
  • the unit "suicide" because it can not supply power; (2) When the vehicle wireless communication terminal system unit is working at a large load, the power supply voltage of the power supply output circuit will be greatly dropped when the vehicle battery power supply is switched to the backup battery power supply, and the power supply switching cannot be performed.
  • the embodiment of the present application provides a device and a method for switching a power supply circuit, which can effectively improve the response speed and smoothness of the in-vehicle wireless communication terminal, meet the large load requirement of the back end, and consume low power of the circuit itself, thereby prolonging the emergency. The time when the system can work normally.
  • a device for switching a power supply circuit comprising a first power source, a second power source, a power supply logic selector and a switch, wherein the power supply logic selector is connected to the first power source and the second power source For selecting the first power source and/or the second power source to supply power to the power system; the switch is connected to the second power source and the power system; when the output voltage of the first power source is less than or equal to the first voltage At the threshold, the second power source supplies power to the power system through the switch.
  • the response speed of switching from the first power source to the second power source is fast, and the phenomenon that the power supply output voltage is greatly dropped when switching from the first power source to the second power source can be avoided, and the response is avoided.
  • the "suicide" problem caused by the lack of speed is smooth, and the transition from the first power source to the second power source is smooth.
  • the switch when the output voltage of the first power source is greater than or equal to a second voltage threshold, the switch is turned off, the first power source and/or the second The power supply is powered by the power supply logic selector; wherein the first voltage threshold is less than or equal to the second voltage threshold.
  • the device further includes: a trigger, configured to control connection or disconnection of the switch; Wherein, when the switch is connected, the second power source supplies power to the power system through the switch; or when the switch is turned off, the first power source and/or the second power source supplies power to the power source through the power logic selector The system is powered.
  • a trigger configured to control connection or disconnection of the switch; Wherein, when the switch is connected, the second power source supplies power to the power system through the switch; or when the switch is turned off, the first power source and/or the second power source supplies power to the power source through the power logic selector The system is powered.
  • the output signal of the powered system controls the connection or disconnection of the switch.
  • the trigger controls the connection or disconnection of the switch by an output voltage of the first power source and a predetermined voltage threshold .
  • the trigger is a comparator.
  • the trigger is a Schmitt trigger.
  • the Schmitt trigger is configured to: if the output voltage of the first power source is less than Or equal to the first voltage threshold, the Schmitt trigger outputs a first level to connect the switch; or if the output voltage of the first power source is greater than or equal to the second voltage threshold, the Schmidt The trigger outputs a second level to turn the switch off.
  • the power supply circuit switching device of the embodiment of the present application adds a hysteresis window to the hardware logic, which can avoid the problem of the wrong response of the switching circuit caused by the abnormal fluctuation of the output voltage of the first power source, and can also avoid the second power source caused by the false response.
  • the consumption of electricity can avoid the problem of the wrong response of the switching circuit caused by the abnormal fluctuation of the output voltage of the first power source, and can also avoid the second power source caused by the false response.
  • the first power source is a vehicle a battery
  • the second power source is a backup battery
  • the power system is an in-vehicle wireless communication system
  • the power supply logic selector is connected to the vehicle battery and the backup battery for selecting the vehicle battery and/or the backup battery
  • the in-vehicle wireless communication system is powered;
  • the switch is connected to the backup battery and the in-vehicle wireless communication system; and when the output voltage of the on-vehicle battery is less than or equal to the first voltage threshold, the backup battery passes the switch to the in-vehicle wireless communication system Power is supplied.
  • a device for switching a power supply circuit comprising a first power supply unit, a second power supply unit, a power supply logic selection unit, and a switch unit, wherein the power supply logic selection unit and the first power supply unit and the The second power supply unit is connected to select the first power supply unit and/or the second power supply unit to supply power to the power unit; the switch unit is connected to the second power supply unit and the power unit; when the first power supply When the output voltage of the unit is less than or equal to the first voltage threshold, the second power supply unit supplies power to the power unit through the switch unit.
  • the response speed of switching from the first power supply unit to the second power supply unit is fast, and the phenomenon that the power supply output voltage is greatly dropped when switching from the first power supply unit to the second power supply unit can be avoided.
  • the transition from the first power supply unit to the second power supply unit is smooth.
  • the switch unit when the output voltage of the first power supply unit is greater than or equal to the second voltage threshold, the switch unit is turned off, the first power supply unit and/or The second power supply unit supplies power to the power unit through the power supply logic selection unit; wherein the first voltage threshold is less than or equal to the second voltage threshold.
  • the device further includes: a triggering unit, configured to control the connection or disconnection of the switch unit Wherein, when the switch unit is connected, the second power supply unit supplies power to the power unit through the switch unit; or when the switch unit is disconnected, the first power supply unit and/or the second power supply unit pass the power supply
  • the logic selection unit supplies power to the power unit.
  • the output signal of the power unit controls the connection or disconnection of the switch unit.
  • the trigger unit controls connection or disconnection of the switch unit by an output voltage of the first power supply unit and a predetermined voltage threshold.
  • the trigger unit controls the connection or disconnection of the switch unit by the output voltage of the first power source and the predetermined voltage threshold, including: if the output voltage of the first power supply unit is less than or equal to the first The voltage threshold, the trigger unit controls the switch unit connection; or if the output voltage of the first power supply unit is greater than or equal to the second voltage threshold, the trigger unit controls the switch unit to be turned off.
  • the power supply circuit switching device of the embodiment of the present application adds a hysteresis window to the hardware logic, which can avoid the problem of the wrong response of the switching circuit caused by the abnormal fluctuation of the output voltage of the first power supply unit, and can also avoid the second cause caused by the false response.
  • the power consumption of the power supply unit is not limited to the hardware logic.
  • a method for switching a power supply circuit comprising: the device of the first aspect and the power supply circuit switching in any one of the possible implementation manners of the first aspect; the method comprising: selecting the power supply logic selector The first power source and/or the second power source supplies power to the power system; when the output voltage of the first power source is less than or equal to the first voltage threshold, the second power source supplies power to the power system through the switch .
  • the response speed of switching from the first power source to the second power source is fast, and the phenomenon that the power supply output voltage is greatly dropped when switching from the first power source to the second power source can be avoided, and the response is avoided.
  • the "suicide" problem caused by the lack of speed is smooth, and the transition from the first power source to the second power source is smooth.
  • the switch when the output voltage of the first power source is greater than or equal to the second voltage threshold, the switch is turned off, the first power source and/or the second The power supply is powered by the power supply logic selector; wherein the first voltage threshold is less than or equal to the second voltage threshold.
  • the trigger controls a connection or disconnection of the switch; wherein, when the switch is connected, The second power source supplies power to the power system through the switch; or when the switch is turned off, the first power source and/or the second power source supplies power to the power system through the power supply logic selector.
  • the output signal of the powered system controls the connection or disconnection of the switch.
  • the trigger controls the connection or disconnection of the switch by the output voltage of the first power source and the predetermined voltage threshold .
  • the trigger controls the connection or disconnection of the switch by the output voltage of the first power source and the predetermined voltage threshold
  • the trigger includes: if the output voltage of the first power source is less than or equal to the first voltage threshold, the trigger controls the switch connection; or if the output voltage of the first power source is greater than or equal to the second voltage threshold, the trigger The controller controls the switch to open.
  • the trigger is a Schmitt trigger
  • the trigger is output voltage and predetermined by the first power source
  • the voltage threshold controls the connection or disconnection of the switch, including: if the output voltage of the first power source is less than or equal to the first voltage threshold, the Schmitt trigger outputs a first level to connect the switch; or If the output voltage of the first power source is greater than or equal to the second voltage threshold, the Schmitt trigger outputs a second level to turn the switch off.
  • the method for switching the power supply circuit in the embodiment of the present application adds a hysteresis window to the hardware logic, which can avoid the problem of the wrong response of the switching circuit caused by the abnormal fluctuation of the output voltage of the first power supply, and can also avoid the second cause caused by the false response.
  • the power consumption of the power supply is not limited to the power supply.
  • FIG. 1 is a schematic diagram of a scenario in which the technical solution of the embodiment of the present application is applied;
  • FIG. 2 is a schematic diagram of a power supply circuit switching apparatus according to an embodiment of the present application.
  • FIG. 3 is a schematic diagram of another power supply circuit switching apparatus according to an embodiment of the present application.
  • FIG. 4 is a schematic diagram of an apparatus for internal power supply switching of a vehicle-mounted wireless communication terminal according to an embodiment of the present application
  • Figure 5 is a relationship between the output voltage of the vehicle battery and the output level of the Schmitt trigger
  • FIG. 6 is a schematic diagram of still another power supply circuit switching device according to an embodiment of the present application.
  • FIG. 7 is a flowchart of a method for switching a power supply circuit according to an embodiment of the present application.
  • FIG. 1 is a schematic diagram of an application scenario of a technical solution of an embodiment of the present application.
  • the embodiment of the present application is applicable to a case where a plurality of power sources supply power to a power system, wherein the plurality of power sources include a main power source and a backup power source, and the main power source cannot meet the normal working or occurrence of the power system. In the event of a fault, switching from the mains to the backup source supplies power to the consumer.
  • the plurality of power sources should include at least one main power source and at least one backup power source. Some embodiments of the present application are described by taking one main power source and one backup power source as an example, but the application is not limited thereto.
  • FIG. 2 shows a schematic block diagram of an apparatus 100 for power supply circuit switching in accordance with an embodiment of the present application.
  • the device 100 includes a first power source 110, a second power source 120, a power supply logic selector 130, and a switch 140, where
  • the power supply logic selector 130 is connected to the first power source 110 and the second power source 120 for selecting the first power source 110 and/or the second power source 120 to supply power to the power system 150;
  • the switch 140 is connected to the second power source 120 and the power system 150;
  • the second power source 120 supplies power to the power system 150 through the switch 140.
  • the output voltage of the first power source 110 is less than or equal to the first voltage threshold.
  • the output voltage of the first power source 110 may be reduced, so that the power supply system 150 cannot be normally powered, or the first power source 110 may be faulty.
  • the power supply system 150 cannot be normally powered, and the output voltage of the first power source 110 may fluctuate drastically.
  • the output voltage of the first power source 110 decreases from a normal operating voltage range at a certain voltage reduction rate, which may result in the device.
  • the power supply to the power system is performed by the second power source 120, and the present application is not limited thereto.
  • first power source and the “second power source” in the embodiments of the present application represent devices that can output power to the power system, and the “first power source” may also be “first power supply component” and “battery battery”. “”Li-ion battery”, etc.; “Power supply logic selector” represents a device that can select “first power supply” and / or “second power supply” to supply power to the power system, and can also be “power selector”, etc. The application is not limited to this.
  • the response speed of switching from the first power source to the second power source is fast, and the phenomenon that the power supply output voltage is greatly dropped when switching from the first power source to the second power source can be avoided, and the response is avoided.
  • the "suicide" problem caused by the lack of speed is smooth, and the transition from the first power source to the second power source is smooth.
  • the switch 140 when the output voltage of the first power source 110 is greater than or equal to the second voltage threshold, the switch 140 is turned off, and the first power source 110 and/or the second power source 120 passes the power supply logic selector 130 to the The power system 150 is powered; wherein the first voltage threshold is less than or equal to the second voltage threshold.
  • the output voltage of the first power source 110 is lowered, so that the power supply system 150 cannot be normally powered, and the second After the power supply 120 is powered by the power system 150 through the switch 140, the first power source 110 is charged again, and when the output voltage is greater than or equal to the second voltage threshold, the power supply logic controller 130 can normally supply power to the power system 150.
  • the switch 140 can be turned off, and the first power source 110 and/or the second power source 120 can supply power to the power system 150 through the power supply logic selector 130.
  • the second power source 120 no longer supplies power to the power system 150 through the power supply logic selector 130.
  • the second power source 120 It can be smoothly switched from the power supply logic selector 130 to the switch 140 to supply power to the power system 150.
  • the power consumed by the power logic selector 130 is greater than the power consumed by the switch 140, and the power logic selector 130 can be prevented from continuing to consume a large amount of energy. Especially at extreme temperatures, it can improve the time the system can work normally in an emergency.
  • the second power source directly supplies power to the power system through the switch, and the power consumption of the circuit itself is low, and the time for the system to work normally in an emergency situation can be prolonged.
  • FIG. 3 is a schematic diagram of another power supply circuit switching apparatus 100 according to an embodiment of the present application.
  • the apparatus 100 for switching the power supply circuit further includes:
  • the second power source 120 supplies power to the power system 150 through the switch 140;
  • the first power source 110 and/or the second power source 120 supplies power to the power system 150 through the power supply logic selector 130.
  • the trigger 160 is a Schmitt trigger.
  • the Schmitt trigger There are generally two voltage thresholds in the Schmitt trigger.
  • the voltage thresholds of the circuit are the forward voltage threshold and the negative voltage threshold respectively.
  • the forward voltage threshold and the negative voltage threshold form a hysteresis zone. It can prevent the noise from interfering with the normal operation of the circuit within the hysteresis range.
  • the Schmitt trigger is a level trigger. When the input signal reaches a certain voltage value, the output voltage will be abrupt.
  • the Schmitt trigger can Connected to the logic switch, when the input signal is greater than or equal to a certain voltage threshold, the output high level "1", so that the logic switch is connected; when the input signal is less than a certain voltage threshold, the output low level "0", so that the logic The switch is open.
  • the Schmitt trigger can also output a low level “0” to make the logic switch connected; when the input signal is less than a certain voltage threshold, the output level is high. "1” causes the logic switch to open.
  • the trigger 160 controls the connection or disconnection of the switch 140 according to the output voltage of the first power source 110 and a predetermined voltage threshold.
  • the Schmitt trigger is specifically used to:
  • the Schmitt trigger outputs a first level to connect the switch 140;
  • the Schmitt trigger outputs a second level to cause the switch 140 to open.
  • the first power source 110 has a rated output voltage of 12V
  • the second power source has a rated output voltage of 6V.
  • the predetermined voltage threshold is divided into a first voltage threshold of 5.8V and a second voltage threshold of 6.1V.
  • the output voltage of 110 is in a falling phase.
  • the switch 140 turns on the connection between the second power source 120 and the power system 150; specifically, when the trigger 160 is applied
  • the output voltage of the first power source is less than or equal to the first voltage threshold, and the output voltage of the first power source and the first voltage threshold control the first level of the Schmitt trigger output, thereby turning on the second power source 120 and using Connection of electrical system 150.
  • the first power source 110 has a rated output voltage of 12V
  • the second power source has a rated output voltage of 6V.
  • the predetermined voltage threshold is divided into a first voltage threshold of 5.8V and a second voltage threshold of 6.1V.
  • the output voltage of the power source 110 is in a rising phase.
  • the switch 140 is disconnected from the second power source 120 and the power system 150.
  • the trigger 160 is applied In the case of the Mitt trigger, if the output voltage of the first power source is greater than or equal to the second voltage threshold, the output voltage of the first power source and the second voltage threshold control the Schmitt trigger output second level, thereby The connection of the second power source 120 and the power system 150 is disconnected.
  • the device for switching the power supply circuit of the embodiment of the present application adds a hysteresis window to the hardware logic, which can avoid the problem of the wrong response of the switching circuit caused by the abnormal fluctuation of the output voltage of the first power source, and can also avoid the second cause caused by the false response.
  • the power consumption of the power supply is not limited to the power supply.
  • the first power source may be one or a plurality of power sources
  • the second power source may be one or multiple power sources, and the application is not limited thereto.
  • the following is an example of switching the power supply circuit on the in-vehicle wireless communication terminal as an example.
  • the power supply circuit design on the vehicle wireless communication terminal not only provides a reliable and stable vehicle battery power supply path for the system, but also considers the characteristics of small backup battery capacity and large back-end load.
  • the backup battery power supply path design needs to meet the following requirements: (1) When the vehicle battery is unable to supply power normally, the system can quickly and smoothly switch to the internal backup battery power supply; (2) The internal backup battery power supply path of the vehicle wireless communication terminal requires its own low power consumption, which can meet the normal operation within the specified time after switching. demand.
  • FIG. 4 is a schematic diagram of an apparatus 200 for internal power supply switching of an in-vehicle wireless communication terminal according to an embodiment of the present application.
  • the apparatus 200 includes an in-vehicle battery 210, a backup battery 220, a power supply unit 211, a power supply unit 221, a power supply logic selector 230, a switch 240, an in-vehicle wireless communication system 250, and a Schmitt trigger 260.
  • the working principle of the internal power supply switching device 200 of the in-vehicle wireless communication terminal is: the vehicle battery 210 supplies power to the in-vehicle wireless communication system 250 through the power supply unit 211, and the backup battery 220 supplies power to the in-vehicle wireless communication system 250 through the power supply unit 221, and two power supply paths.
  • the power supply logic selector 230 supplies power to the in-vehicle wireless communication system 250.
  • the power supply logic selector 230 outputs a first voltage.
  • the backup battery 220 also supplies power to the in-vehicle wireless communication system 250 through the power supply unit 221 and the switch 240.
  • connection or disconnection of the switch 240 is controlled by the output of the Schmitt trigger 260,
  • the input signals of the special trigger 260 are a predetermined voltage threshold and an on-vehicle battery output voltage, respectively.
  • vehicle battery 210 and the power supply unit 211 may be the first power source 110 in FIG. 2, and the backup battery 220 and the power supply unit 221 may be the second power source 120 in FIG.
  • the rated output voltage of the vehicle battery 210 is 12V
  • the rated output voltage of the backup battery 220 is 6V.
  • the vehicle battery 210 passes through the line 1 (from the power supply unit 211 to the power supply logic selector 230) as the in-vehicle wireless communication system 250.
  • the backup battery 220 passes through the line 2 (from the power supply unit 221 to the power supply logic selector). 230) powering the in-vehicle wireless communication system 250.
  • the Schmitt trigger 260 will trigger the switch 240 to open, so that the backup battery 220 passes through the line 3 (from the power supply unit 221 to Switch 240) is a vehicle wireless communication system
  • the 250 power supply i.e., smoothly switched from the power supply logic selector 230 to the switch 240 to power the in-vehicle wireless communication system 250.
  • the power supply logic selector 230 may also select the backup battery 220 to supply power to the in-vehicle wireless communication system 250, but since the rated output voltage of the vehicle battery 210 is greater than the backup battery 220. The rated output voltage of the backup battery 220 does not output power, so that the backup battery power is not consumed.
  • the hard switching of the internal power supply switching device of the in-vehicle wireless communication terminal in the embodiment of the present application does not depend on the software logic, and the response speed is fast, and the phenomenon that the power supply output voltage is greatly dropped when switching from the vehicle battery to the backup battery can be avoided, and the response speed is avoided.
  • the "suicide" problem caused by not being timely, the transition from the vehicle battery to the backup battery is smooth, and at the same time, the hysteresis window is added to the hardware logic, which can avoid the problem of the wrong response of the switching circuit caused by the abnormal fluctuation of the vehicle battery voltage. It also avoids the consumption of backup battery power caused by false response.
  • FIG. 5 illustrates a relationship between an output voltage of the on-vehicle battery 210 and a Schmitt trigger output level according to an embodiment of the present application.
  • the rated output voltage of the vehicle battery 210 is 12V
  • the rated output voltage of the backup battery 220 is 6V
  • the predetermined voltage threshold is 5.8V of the first voltage threshold and 6.1V of the second voltage threshold, respectively.
  • the rated output voltage of the vehicle battery 210 is 12V
  • the rated output voltage of the backup battery 220 is 6V
  • the predetermined voltage threshold is 5.8V of the first voltage threshold and 6.1V of the second voltage threshold, respectively.
  • the device 200 for internal power supply switching of the in-vehicle wireless communication terminal adds a hysteresis window to the hardware logic, which can avoid the problem of incorrect response of the switching circuit caused by abnormal voltage fluctuation of the vehicle battery 210 in the vehicle application scenario. At the same time, it can also avoid the consumption of the backup battery 220 caused by the false response.
  • the backup battery after switching from the vehicle battery to the backup battery, the backup battery directly supplies power to the vehicle wireless communication system through the switch, which is less affected by high and low temperature, and the circuit itself consumes low power consumption. It can prolong the time when the system can work normally in an emergency.
  • FIG. 6 is a schematic diagram of still another power supply circuit switching device 300 according to an embodiment of the present application, including a first power supply unit 310, a second power supply unit 320, a power supply logic selection unit 330, and a switch unit 340, where
  • the power supply logic selection unit 330 is connected to the first power supply unit 310 and the second power supply unit 320 for selecting the first power supply unit 310 and/or the second power supply unit 320 to supply power to the power unit 350.
  • the switch unit 340 is connected to the second power supply unit 320 and the power unit 350;
  • the second power supply unit 320 supplies power to the power unit 350 through the switch unit 340.
  • the response speed of switching from the first power supply unit to the second power supply unit is fast, and the phenomenon that the power supply output voltage is greatly dropped when switching from the first power supply unit to the second power supply unit can be avoided.
  • the transition from the first power supply unit to the second power supply unit is smooth.
  • the The switching unit 340, the first power supply unit 310 and/or the second power supply unit 320 supplies power to the power unit 350 through the power supply logic selection unit 330;
  • the first voltage threshold is less than or equal to the second voltage threshold.
  • the device further includes:
  • a trigger unit 360 configured to control connection or disconnection of the switch unit 340
  • the second power supply unit 320 supplies power to the power unit 350 through the switch unit 340;
  • the first power supply unit 310 and/or the second power supply unit 320 supplies power to the power unit 350 through the power supply logic selection unit 330.
  • the trigger unit 360 controls the connection or disconnection of the switch unit 340 by the output voltage of the first power supply unit 310 and a predetermined voltage threshold.
  • the triggering unit 360 controls the connection or disconnection of the switch unit 340 by the output voltage of the first power source 310 and the predetermined voltage threshold, including: if the output voltage of the first power supply unit 310 is less than or equal to the first a voltage threshold, the trigger unit 360 controls the switch unit 340 to connect; or
  • the trigger unit 360 controls the switch unit 340 to be turned off.
  • the power supply circuit switching device of the embodiment of the present application adds a hysteresis window to the hardware logic, which can avoid the problem of the wrong response of the switching circuit caused by the abnormal fluctuation of the output voltage of the first power supply unit, and can also avoid the second cause caused by the false response.
  • the power consumption of the power supply unit is not limited to the hardware logic.
  • FIG. 7 shows a schematic flow diagram of a method 300 of power supply circuit switching in accordance with an embodiment of the present application. As shown in FIG. 7, the method 400 includes:
  • the power logic selector selects the first power source and/or the second power source to supply power to the power system.
  • the response speed of switching from the first power source to the second power source is fast, and the phenomenon that the power supply output voltage is greatly dropped when switching from the first power source to the second power source can be avoided, and the response is avoided.
  • the "suicide" problem caused by the lack of speed is smooth, and the transition from the first power source to the second power source is smooth.
  • the switch when the output voltage of the first power source is greater than or equal to the second voltage threshold, the switch is turned off, and the first power source and/or the second power source supplies power to the power system through the power logic selector;
  • the first voltage threshold is less than or equal to the second voltage threshold.
  • the trigger controls the connection or disconnection of the switch, wherein when the switch is connected, the second power source supplies power to the power system through the switch unit;
  • the first power source and/or the second power source supplies power to the power system through the power supply logic selector.
  • the trigger controls the connection or disconnection of the switch by an output voltage of the first power source and a predetermined voltage threshold.
  • the trigger controls the connection or disconnection of the switch by the output voltage of the first power source and a predetermined voltage threshold, including:
  • the trigger controls the switch connection
  • the trigger controls the switch to open if the output voltage of the first power source is greater than or equal to the second voltage threshold.
  • the method for switching the power supply circuit in the embodiment of the present application adds a hysteresis window to the hardware logic, which can avoid the problem of the wrong response of the switching circuit caused by the abnormal fluctuation of the output voltage of the first power supply, and can also avoid the second cause caused by the false response.
  • the power consumption of the power supply is not limited to the power supply.
  • the computer program product can include one or more computer instructions.
  • the computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
  • the computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be from a website site, computer, server or data center Transfer to another website site, computer, server, or data center by wire (eg, coaxial cable, fiber optic, digital subscriber (DSL), or wireless (eg, infrared, wireless, microwave, etc.).
  • the computer readable storage medium can be any available media that can be accessed by a computer or a data storage device such as a server, data center, or the like that includes one or more available media.
  • the usable medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic disk), an optical medium (eg, a DVD), or a semiconductor medium (such as a solid state disk (SSD)).
  • the disclosed systems, devices, and methods may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product.
  • the technical solution of the present application is essentially or Portions contributing to the prior art or portions of the technical solution may be embodied in the form of a software product stored in a storage medium, including instructions for causing a computer device (which may be a personal computer) , server, or network device, etc.) perform all or part of the steps of the methods described in various embodiments of the present application.
  • the foregoing storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read only memory, a random access memory, a magnetic disk, or an optical disk.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Stand-By Power Supply Arrangements (AREA)
  • Direct Current Feeding And Distribution (AREA)

Abstract

L'invention concerne un appareil et un procédé de commutation d'un circuit d'alimentation électrique. L'appareil comprend une première source d'alimentation (110), une seconde source d'alimentation (120), un sélecteur logique d'alimentation électrique (130) et un commutateur (140). Le sélecteur de logique d'alimentation électrique est connecté aux première et seconde sources d'alimentation et sert à sélectionner la première source d'alimentation et/ou la seconde source d'alimentation de façon à alimenter en énergie un système de consommation d'énergie. Le commutateur est connecté à la seconde source d'alimentation et au système de consommation d'énergie. Lorsqu'une tension de sortie de la première source d'alimentation est inférieure ou égale à un premier seuil de tension, la seconde source d'alimentation alimente en énergie le système de consommation d'énergie au moyen du commutateur. L'appareil peut assurer une commutation rapide et régulière d'une première source d'alimentation vers une seconde source d'alimentation, ainsi que le fonctionnement normal d'un système dans un temps programmé.
PCT/CN2017/075770 2016-12-08 2017-03-06 Appareil et procédé de commutation de circuit d'alimentation électrique WO2018103221A1 (fr)

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CN111211614A (zh) * 2020-03-18 2020-05-29 浩云科技股份有限公司 一种双备份电源切换系统和方法
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CN201830015U (zh) * 2010-11-04 2011-05-11 长安大学 一种车载电源电压监测及备用电池充放电控制装置
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CN116578176A (zh) * 2023-04-27 2023-08-11 珠海妙存科技有限公司 供电电路及其实现方法、实现装置、存储介质
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