WO2022087961A1 - Procédé et appareil de commande d'alimentation électrique et dispositif électrique - Google Patents

Procédé et appareil de commande d'alimentation électrique et dispositif électrique Download PDF

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Publication number
WO2022087961A1
WO2022087961A1 PCT/CN2020/124824 CN2020124824W WO2022087961A1 WO 2022087961 A1 WO2022087961 A1 WO 2022087961A1 CN 2020124824 W CN2020124824 W CN 2020124824W WO 2022087961 A1 WO2022087961 A1 WO 2022087961A1
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WIPO (PCT)
Prior art keywords
resistance value
power line
power
output voltage
electrical equipment
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PCT/CN2020/124824
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English (en)
Chinese (zh)
Inventor
周韦博
林宋荣
黄雪峰
Original Assignee
深圳市大疆创新科技有限公司
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Application filed by 深圳市大疆创新科技有限公司 filed Critical 深圳市大疆创新科技有限公司
Priority to PCT/CN2020/124824 priority Critical patent/WO2022087961A1/fr
Priority to CN202080016206.7A priority patent/CN113574488A/zh
Publication of WO2022087961A1 publication Critical patent/WO2022087961A1/fr

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    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/10—Regulating voltage or current
    • G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
    • G05F1/56—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices
    • G05F1/561—Voltage to current converters
    • 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
    • H02J4/00—Circuit arrangements for mains or distribution networks not specified as ac or dc

Definitions

  • Embodiments of the present invention relate to the field of automatic control, and in particular, to a power supply control method, device, and electrical equipment.
  • Embodiments of the present invention provide a power supply control method, device, and electrical equipment, so as to ensure safe power supply of the electrical equipment.
  • a first aspect of the embodiments of the present invention provides a power supply control method, which is applied to electrical equipment, where the electrical equipment is connected to a power supply end through a power cord, and the power supply control method includes:
  • a second aspect of the embodiments of the present invention provides a power supply control device, which is provided to electrical equipment, and the electrical equipment is connected to a power supply end through a power cord;
  • the power supply control device includes: a memory and a processor; wherein the Executable code is stored on the memory, and when the executable code is executed by the processor, the processor is caused to implement:
  • the input voltage and output voltage of the power line are obtained; according to the input voltage, the output voltage and the actual power of the electrical equipment, the current resistance value; according to the resistance value, perform a corresponding control action on the electrical equipment.
  • a third aspect of the embodiments of the present invention provides an electrical device, including:
  • a processor coupled to the interface, for acquiring the input voltage and output voltage of the power line after the powered device is powered on; according to the input voltage, the output voltage and the powered device The actual power of the power line is determined, and the current resistance value of the power line is determined; according to the resistance value, the corresponding control action is performed on the electrical equipment.
  • the electrical equipment is connected to the power supply terminal through the power cord, so that the power supply terminal supplies power to the electrical equipment through the power cord.
  • the electrical equipment obtains the input voltage and output voltage of the power line, so that the actual power of the electrical equipment can be calculated according to the current input voltage and output voltage of the power line and the actual power of the electrical equipment. to determine the current resistance value of the power cord.
  • the electrical device performs corresponding control actions based on the current resistance value of the power line.
  • the corresponding power supply control can be made in time based on the resistance change of the power line, which can effectively prevent the electrical equipment from being damaged due to the increase of the resistance value of the power line. Safety problems caused by high power operation.
  • FIG. 1 is a schematic diagram of a power supply control system according to an embodiment of the present invention.
  • FIG. 2 is a flowchart of a power supply control method provided by an embodiment of the present invention.
  • FIG. 3 is a schematic diagram of a power supply control scenario provided by an embodiment of the present invention.
  • FIG. 4 is a flowchart of a power supply control method provided by an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of a power supply control scenario provided by an embodiment of the present invention.
  • FIG. 6 is a flowchart of a power supply control method provided by an embodiment of the present invention.
  • FIG. 7 is a flowchart of a power supply control method provided by an embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of a power supply control device according to an embodiment of the present invention.
  • FIG. 9 is a schematic structural diagram of an electrical device according to an embodiment of the present invention.
  • power supply lines such as AC lines
  • the resistance value of the power line is measured before the electrical equipment is used, so that the electrical equipment can be determined based on the resistance value. reasonable actual power to avoid damage to the power cord.
  • the resistance of the power cord will not be detected during the use of the electrical equipment.
  • the power cord may experience aging, poor contact, etc., resulting in increased resistance, which may lead to safety issues such as fire due to overheating of electrical equipment when the electrical equipment is operating at high power. .
  • the embodiments of the present application provide a power supply control solution.
  • the electrical equipment is connected to the power supply terminal through the power line, so that the power supply terminal supplies power to the electrical equipment through the power line.
  • the electrical equipment obtains the input voltage and output voltage of the power line, so that the actual power of the electrical equipment can be calculated according to the current input voltage and output voltage of the power line and the actual power of the electrical equipment. to determine the current resistance value of the power cord.
  • the electrical device performs corresponding control actions based on the current resistance value of the power line.
  • the corresponding power supply control can be made in time based on the resistance change of the power line, which can effectively prevent the electrical equipment from being damaged due to the increase of the resistance value of the power line. Safety problems caused by high power operation.
  • the power supply control method can be applied to the power supply control system shown in FIG. 1 , and the power supply control system includes a power supply terminal, Power cords and electrical equipment.
  • the electrical equipment is connected to the power supply terminal through a power cord, so as to supply power to the electrical equipment through the power supply terminal.
  • the power cord includes a direct current (DC) power cord and an alternating current (AC) power cord.
  • the AC power cord is a wire that passes alternating current with a higher voltage, and is generally suitable for electrical equipment with higher actual power.
  • the DC power line is a wire that passes direct current with a lower voltage.
  • the power cord in the embodiment of the present invention may be an AC power cord or a DC power cord.
  • the power supply control method provided by the embodiment of the present invention can be performed by the electrical equipment shown in FIG. 1 .
  • the resistance of the power line is continuously adjusted. According to the change of the resistance value of the power line, the corresponding safety control operation can be made in time to ensure the safe and reliable operation of the electrical equipment itself.
  • the original intention of using the above power supply control method can be as follows:
  • the electrical equipment may be, for example, a high-power electrical equipment such as a battery charger, an air conditioner, etc., of course, it is not limited thereto.
  • the power supply control method provided by the embodiment of the present invention may be applicable to the following scenario: a battery charging box of a drone (such as an agricultural drone, etc.) can be connected to a power supply terminal through a power cord.
  • a power module is provided in the battery charging box, and the power module needs to be fully charged, so that the drone can charge the battery in the drone through the battery charging box when the drone is working in the field.
  • the power module in the battery charging box it needs to achieve fast charging, so the charging power is relatively large. In this way, when the battery charging box is in a high-power working state, if the resistance of the power cord connected to it increases, the power cord will There is a risk of burning out the wire due to excessive heat, causing safety issues.
  • the battery charging box when the battery charging box is activated to charge the power module, it can continuously and automatically detect the resistance value of the power line, so as to make corresponding safety control operations in time based on the resistance value of the power line, such as when When it is found that the resistance value of the power line increases to a certain level, reduce the actual power of the battery charging box to ensure the charging safety of the power module and alleviate the phenomenon of excessive heating of the power line; for another example, when the resistance value of the power line is found to be When it rises to a higher level, stop charging the power module to avoid damage to the power module. At this time, the relevant personnel can replace the power cord before continuing to charge the power module.
  • the battery charging box can automatically and continuously detect the resistance change of the power line during the process of charging the power module, so that the corresponding control action can be made in time without manual intervention. It ensures the safe charging of the power module by the battery charging box.
  • the core logic of the power supply control scheme executed by the electrical equipment is briefly described above by taking the electrical equipment as a battery charging box as an example. The following describes the process of the electrical equipment executing the power supply control method in FIG. 1 in detail with reference to the following embodiments.
  • FIG. 2 is a flowchart of a power supply control method provided by an embodiment of the present invention. As shown in FIG. 2 , the power supply control method may include the following steps:
  • the electrical equipment After the electrical equipment is powered on and started, the electrical equipment obtains the input voltage and output voltage of the power line, wherein the electrical equipment is connected to the power supply terminal through the power line.
  • the electrical equipment determines the current resistance value of the power line according to the input voltage, output voltage of the power line and the actual power of the electrical equipment.
  • the electrical equipment performs a corresponding control action on the electrical equipment according to the current resistance value of the power line.
  • the electrical equipment starts to work normally after it is powered on.
  • the input voltage and output voltage of the power line, as well as its current actual power can be obtained regularly.
  • the time interval of the timing is, for example, a set value such as 5 minutes and 10 minutes. Taking the time interval of 5 minutes as an example, after the electrical equipment is powered on, it can obtain the input voltage and output voltage of the power line and its current actual power every 5 minutes.
  • the electrical equipment is an air conditioner
  • the electrical equipment starts to work normally after it is powered on, it means: after the air conditioner is connected to the power supply (that is, connected to the power supply end, the power supply end will supply power to it), and then start the air conditioner to start cooling/heating, etc. .
  • the electrical equipment is a charger, specifically, a charger that charges a certain kind of battery, such as a charger that charges a battery for a drone.
  • the normal operation of the electrical equipment after it is powered on means: connect the charger to the power supply (that is, connect to the power supply end, and the power supply end supplies power to it) and connect the battery to be charged to the charger, and then charge the battery.
  • the device starts charging the battery.
  • the input voltage and output voltage of the power line and the acquisition result of the current actual power of the power line are exemplarily described with reference to FIG. 3 .
  • the input voltage of the power supply line obtained at time T1 is represented as U0
  • the output voltage of the power supply line is represented as U1
  • the actual power of the electrical equipment is represented as P1.
  • the input voltage U0 of the power line is the output voltage of the power supply terminal at this time, and several optional ways to obtain the input voltage U0 of the power line will be introduced below.
  • the output voltage U1 of the power line is the input voltage of the electrical equipment at this time, so the electrical equipment can obtain U1 by detecting its own input voltage at time T1.
  • the difference between U0 and U1 is the voltage difference between the two ends of the current power line
  • P1/U1 is the current value of the current flowing through the power line.
  • the electrical device may perform a control action corresponding to the target resistance value interval on the electrical device.
  • multiple resistance value intervals can be preset for the resistance value of the power line and the control actions corresponding to each resistance value interval (that is, the control actions performed on the electrical equipment), and the control actions corresponding to different resistance value intervals are different.
  • the target resistance value interval corresponding to the resistance value R1 is one of the preset resistance value intervals.
  • control actions corresponding to different resistance value intervals are different, reflecting that the different resistance values of the power line have different influences on the safe and reliable operation of the electrical equipment.
  • the control action performed on the electrical equipment corresponding to the target resistance value interval may include at least one of the following:
  • the first resistance value interval, the second value interval, the third resistance value interval, and the fourth resistance value interval increase sequentially.
  • the current resistance value R1 of the power line belongs to a normal resistance value range (ie, the first resistance value range) that will not have a significant impact on the electrical equipment, it can be considered that the resistance value of the power line will not be correct. The safe operation of electrical equipment is affected.
  • the current resistance value R1 of the power line belongs to the second resistance value range, it means that the resistance value of the power line has increased to a certain extent. It can be considered that the resistance value of the power line has little influence on the safe operation of the electrical equipment at this time. , the electrical equipment can continue to work with the original actual power, but the electrical equipment needs to send an alarm signal, so that the relevant personnel can take corresponding measures based on the alarm signal, such as controlling the working time of the electrical equipment not to be too long, etc. Wait.
  • the current resistance value R1 of the power line belongs to the third resistance value interval, it means that the resistance value of the power line has risen to a higher degree.
  • the electrical equipment cannot continue to work with the original actual power, otherwise it will be caused by the power If it is too large, it will cause the power cord to overheat and cause safety problems. Therefore, at this time, it is necessary to reduce the actual power of the electrical equipment based on the resistance value R1.
  • a target power corresponding to the third resistance value interval may be preset, so that the actual power of the electrical equipment can be reduced from P1 to the target power.
  • the third resistance value interval can also be divided into sub-resistance value intervals, and the target power corresponding to each sub-resistance value interval can be set. The actual power of the electrical equipment is reduced to the target power corresponding to the target sub-resistance value interval.
  • the current resistance value R1 of the power line belongs to the higher fourth resistance value range, it means that the current resistance value of the power line can no longer enable the electrical equipment to work normally. At this time, the operation of the electrical equipment can be stopped directly to ensure Safety of electrical equipment. Relevant personnel can replace the power cord and use the new power cord to power the electrical equipment.
  • the resistance value of the power line can be detected, and the corresponding power supply control can be made in time based on the detection result of the resistance value of the power line, which can effectively avoid using Safety problems caused by the increase in the resistance value of the power cord for electrical equipment.
  • FIG. 4 is a flowchart of a power supply control method provided by an embodiment of the present invention. As shown in FIG. 4 , the power supply control method may include the following steps:
  • the electrical equipment After the electrical equipment is powered on and started, the electrical equipment obtains the current first output voltage of the power line, and obtains the first input voltage of the power line before the electrical equipment is powered on and started, wherein the electrical equipment passes through the power line. Connect to the power supply.
  • the electrical device determines the current first resistance value of the power line according to the first input voltage, the first output voltage, and the first actual power of the electrical device.
  • the electrical device performs a corresponding control action on the electrical device according to the current first resistance value of the power line.
  • the power supply control method provided in this embodiment can be executed in a short time after the electrical device is powered on and started, in short, the power supply control method is executed immediately after the electrical device is powered on and started. In this way, after the electrical equipment is powered on and started, the electrical equipment can be safely powered based on the current resistance value of the power line, so as to ensure that the subsequent use of the electrical equipment has a reliable operating condition.
  • obtaining the first input voltage of the power line before the powered device is powered on can be implemented as:
  • the output voltage of the power line obtained before the powered device is powered on is determined as the first input voltage of the power line.
  • the first input voltage of the power line before the electrical equipment is powered on refers to the input voltage of the power line when the electrical equipment is in the no-load state (ie, the output voltage of the power supply terminal at this time).
  • the electrical equipment When the electrical equipment is in the no-load state, it may be a state in which the electrical equipment is connected to the power supply terminal through the power cord, but is not powered on.
  • the electrical equipment is powered on and started, that is, it is in a state of working with a load.
  • the electrical equipment detects its own input voltage again as the first output voltage of the power line.
  • the output voltage is U1.
  • the electrical equipment detects its current first actual power, which is assumed to be represented as P1.
  • the electrical equipment After obtaining the above-mentioned first input voltage U0, first output voltage U1 and first actual power P1, the electrical equipment can obtain the resistance value R1 of the power line at the time of T1 by calculating according to the following formula:
  • R1 (U0-U1)/(P1/U1).
  • the electrical device can store the first input voltage U0, so as to directly read the stored voltage after subsequent power-on startup.
  • the first input voltage U0 of the following calculation is performed.
  • the electrical equipment can automatically detect the resistance value of the power line based on the automatic detection of the input voltage when no-load, the input voltage when working with a load and the actual power when working with a load, so as to facilitate the automatic detection of the resistance value of the power line based on The detected resistance value of the power line executes the corresponding control action to ensure the safe operation of the electrical equipment.
  • FIG. 6 is a flowchart of a power supply control method provided by an embodiment of the present invention. As shown in FIG. 6 , the power supply control method may include the following steps:
  • the electrical equipment After the electrical equipment is powered on and started, if the drop range of the output voltage of the power line meets the set condition, then reduce the actual power of the electrical equipment to the second actual power, and obtain the current second output voltage of the power line, The electrical equipment is connected to the power supply end through a power cord.
  • the electrical device determines the current second resistance value of the power line according to the second input voltage, the second output voltage, and the second actual power.
  • the electrical device performs a corresponding control action on the electrical device according to the current second resistance value of the power line.
  • the solution provided by this embodiment can be continued after the solution provided by the embodiment shown in FIG. 4 , that is, after the electrical equipment is controlled according to the first resistance value of the power line, if the output voltage of the power line is detected subsequently, It is found that at the time T2, the output voltage of the power line is reduced from the first output voltage (the first output voltage is used as the reference voltage at this time) to meet the set condition, and the actual power of the electrical equipment is adjusted from the first actual power. is the second actual power, denoted as P2, and after adjusting the actual power, the input voltage of the electrical equipment is detected again as the current second output voltage of the power line, denoted as U2.
  • the solution provided in this embodiment can also be implemented independently of the solution provided by the embodiment shown in FIG. 4 , that is, when the electrical equipment is powered on and started, the input voltage of the electrical equipment is first detected as the output voltage of the power line at this time , the output voltage is used as the reference voltage, and then the output voltage of the power line at different times can be obtained by detecting the input voltage of the electrical equipment regularly. After the voltage drop meets the set condition, the actual power of the electrical equipment is adjusted down to the second actual power P2, and after the actual power is reduced, the input voltage of the electrical equipment is detected again as the current second output of the power line voltage U2.
  • the above-mentioned setting condition may be: the drop range of the output voltage of the power line compared to the reference voltage is greater than the set threshold value.
  • reducing the actual power of the electrical equipment to the second actual power includes:
  • the second actual power is determined according to the preset correspondence between the output voltage of the power line and the actual power of the electrical equipment; wherein, the smaller the output voltage of the power line, the smaller the actual power of the electrical equipment.
  • the reduction range of the actual power of the electrical equipment can be determined according to the drop degree of the output voltage of the power line: the greater the drop of the output voltage of the power line, the greater the reduction range of the actual power of the electrical equipment.
  • the electrical equipment can be turned off first, so that the electrical equipment is in an unpowered no-load state, and then the electrical equipment detects its own input voltage at this time. As the second input voltage U0' of the power supply line when the powered device is in an off state.
  • the electrical equipment calculates the second resistance value R2 of the power line at the time of T2 according to the following formula:
  • R2 (U0'-U2)/(P2/U2).
  • the electrical equipment After that, the electrical equipment performs corresponding control actions on the electrical equipment according to the second resistance value R2 of the power line.
  • the control action execution process reference may be made to the relevant descriptions in the foregoing embodiments, and details are not described herein.
  • FIG. 7 is a flowchart of a power supply control method provided by an embodiment of the present invention. As shown in FIG. 7 , the power supply control method may include the following steps:
  • the electrical equipment After the electrical equipment is powered on and started, if the drop range of the output voltage of the power line meets the set condition, reduce the actual power of the electrical equipment to the second actual power, and obtain the current second output voltage of the power line, The electrical equipment is connected to the power supply end through a power cord.
  • the electrical equipment continues to reduce the actual power of the electrical equipment to the third actual power within the preset time, and obtains the current third output voltage of the power line.
  • the electrical equipment determines that the input voltage of the power line is a preset variable, and determines the current second power line according to the preset variable, the second output voltage, the second actual power, the third output voltage, and the third actual power. resistance.
  • the electrical device performs a corresponding control action on the electrical device according to the current second resistance value of the power line.
  • the electrical equipment in the working process after the electrical equipment has been powered on and started, when it is found at time T2 that the drop of the output voltage of the power line meets the set condition, the electrical equipment needs to be turned off to Obtain the input voltage of the power line corresponding to the time T2, which will affect the normal use process of the electrical equipment and affect the user experience.
  • the solution in this embodiment is provided. In the solution provided by this embodiment, it is not necessary to detect the input voltage of the power line.
  • the electrical equipment continues to reduce the actual power of the electrical equipment to the third actual power P3, and after reducing the actual power, the input voltage of the electrical equipment is detected again as the current third output voltage U3 of the power line.
  • the difference between time T3 and time T2 is within the above preset time.
  • the input voltage of the power line can be expressed as a preset variable, which is assumed to be Ux.
  • the electrical equipment can determine the current second resistance value R2 of the power line according to the preset variable Ux, the second output voltage U2, the second actual power P2, the third output voltage U3, and the third actual power P3.
  • the second resistance value R2 is determined.
  • the electrical equipment After that, the electrical equipment performs corresponding control actions on the electrical equipment according to the second resistance value R2 of the power line.
  • the control action execution process reference may be made to the relevant descriptions in the foregoing embodiments, and details are not described herein.
  • the solution provided by the embodiments of the present invention can continuously detect the resistance value of the power line when the electrical equipment is running. If the resistance value of the power line changes, safety controls such as adjusting the power of the electrical equipment can be made in time. Measures to prevent the power cord from heating up due to excessive resistance when the electrical equipment is running at high power, which will cause the wire to burn and cause a fire.
  • FIG. 8 is a schematic structural diagram of a power supply control device provided by an embodiment of the present invention.
  • the power supply control device is provided to an electrical equipment, and the electrical equipment is connected to a power supply terminal through a power cord.
  • the power supply control device includes: a memory 11 and a processor 12 .
  • executable code is stored on the memory 11, and when the executable code is executed by the processor 12, the processor 12 is made to realize:
  • the input voltage and output voltage of the power line are obtained; according to the input voltage, the output voltage and the actual power of the electrical equipment, the current resistance value; according to the resistance value, perform a corresponding control action on the electrical equipment.
  • the processor 12 is specifically configured to: according to the target resistance value interval corresponding to the resistance value, perform the same operation on the electrical equipment with the target resistance value.
  • processor 12 is specifically configured to execute at least one of the following:
  • the first resistance value interval, the second value value interval, the third resistance value interval, and the fourth resistance value interval increase sequentially.
  • the processor 12 may be specifically configured to: acquire the current first output voltage of the power cord after the powered device is powered on, and acquire the power cord before the powered device is powered on and powered on.
  • the current first resistance value of the power line is determined according to the first input voltage, the first output voltage and the first actual power of the electrical device.
  • the processor 12 is specifically configured to: acquire the voltage before the electrical equipment is powered on and started.
  • the output voltage of the power line is determined; the output voltage of the power line obtained before the powered device is powered on is determined as the first input voltage of the power line.
  • the processor 12 is further configured to: after the electrical device is powered on and started, Perform the following steps:
  • the processor 12 is further configured to: determine the The current second resistance value of the power line.
  • the processor 12 is specifically configured to: determine the first formula for solving the second resistance value according to the preset variable, the second output voltage and the second actual power; According to the preset variable, the third output voltage and the third actual power, the second formula for solving the second resistance value is determined; according to the first formula and the second formula, the second formula is determined. resistance.
  • the processor 12 is further configured to: start the electrical device when it is powered on After that, perform the following steps:
  • the processor 12 is further configured to: determine the current second resistance value of the power line according to the second input voltage, the second output voltage and the second actual power.
  • the processor 12 is specifically configured to: according to the preset output voltage of the power line and the electrical equipment The corresponding relationship between the actual powers is determined, and the second actual power is determined; wherein, the smaller the output voltage of the power line is, the smaller the actual power of the electrical equipment is.
  • the processor 12 may be a central processing unit (CPU), or other types of processors, such as logic programmable chips, such as CPLD, FPGA, and so on.
  • CPU central processing unit
  • logic programmable chips such as CPLD, FPGA, and so on.
  • FIG. 9 is a schematic structural diagram of an electrical device provided by an embodiment of the present invention. As shown in FIG. 9 , the electrical device includes:
  • the interface 21 is used for connecting with a power cord, so that the electrical device can be connected to the power supply end through the power cord.
  • the processor 22, coupled to the interface 21, is used to obtain the input voltage and output voltage of the power line after the electrical device is powered on; according to the input voltage, the output voltage and the user
  • the actual power of the electrical equipment is used to determine the current resistance value of the power line; according to the resistance value, a corresponding control action is performed on the electrical equipment.
  • the processor 22 is specifically configured to: according to the target resistance value interval corresponding to the resistance value, perform the same operation on the electrical equipment with the target resistance value.
  • processor 22 is specifically configured to execute at least one of the following:
  • the first resistance value interval, the second value value interval, the third resistance value interval, and the fourth resistance value interval increase sequentially.
  • the processor 22 may be specifically configured to: acquire the current first output voltage of the power cord after the powered device is powered on, and acquire the power cord before the powered device is powered up and powered on.
  • the current first resistance value of the power line is determined according to the first input voltage, the first output voltage and the first actual power of the electrical device.
  • the processor 22 is specifically configured to: acquire the voltage before the electrical device is powered on and started. The output voltage of the power line is determined; the output voltage of the power line obtained before the powered device is powered on is determined as the first input voltage of the power line.
  • the processor 22 is further configured to: after the electrical device is powered on and started, Perform the following steps:
  • the processor 22 is further configured to: determine the The current second resistance value of the power line.
  • the processor 22 is specifically configured to: determine the first formula for solving the second resistance value according to the preset variable, the second output voltage and the second actual power; According to the preset variable, the third output voltage and the third actual power, the second formula for solving the second resistance value is determined; according to the first formula and the second formula, the second formula is determined. resistance.
  • the processor 22 is further configured to: start the electrical device when it is powered on After that, perform the following steps:
  • the processor 22 is further configured to: determine the current second resistance value of the power line according to the second input voltage, the second output voltage and the second actual power.
  • the processor 22 is specifically configured to: according to the preset output voltage of the power line and the electrical equipment The corresponding relationship between the actual powers is determined, and the second actual power is determined; wherein, the smaller the output voltage of the power line is, the smaller the actual power of the electrical equipment is.
  • the above-mentioned power supply device may be a charger for charging objects such as batteries, or may be other electronic devices such as air conditioners.
  • an embodiment of the present invention further provides a computer-readable storage medium, where executable codes are stored in the computer-readable storage medium, and the executable codes are used to implement the power supply control methods provided by the foregoing embodiments.

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Abstract

La présente invention concerne un procédé et un appareil de commande d'alimentation électrique et un appareil électrique. Le dispositif électrique est connecté à une extrémité d'alimentation électrique au moyen d'un fil de source d'alimentation. Le procédé de commande d'alimentation électrique comprend les étapes consistant à : après la mise sous tension et le démarrage d'un dispositif électrique, acquérir, par le dispositif électrique, une tension d'entrée et une tension de sortie d'un fil de source d'alimentation ; et déterminer la valeur de résistance de l'instant du fil de source d'alimentation en fonction de la tension d'entrée et de la tension de sortie du fil de source d'alimentation et d'une puissance réelle du dispositif électrique, et exécuter une action de commande correspondante sur le dispositif électrique en fonction de la valeur de résistance de l'instant du fil de source d'alimentation. Pendant l'utilisation, un dispositif électrique mesure en continu des valeurs de résistance d'un fil de source d'alimentation, de manière à effectuer une commande d'alimentation électrique correspondante dans un délai convenable sur la base d'un changement de la résistance du fil de source d'alimentation, de sorte qu'un fonctionnement sûr et fiable du dispositif électrique peut être assuré.
PCT/CN2020/124824 2020-10-29 2020-10-29 Procédé et appareil de commande d'alimentation électrique et dispositif électrique WO2022087961A1 (fr)

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CN202080016206.7A CN113574488A (zh) 2020-10-29 2020-10-29 供电控制方法、装置、用电设备

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US20120151242A1 (en) * 2006-11-10 2012-06-14 Ocz Technology Group, Inc. Apparatus for optimizing supply power of a computer component and methods therefor
CN111679126A (zh) * 2020-06-04 2020-09-18 国网浙江杭州市萧山区供电有限公司 一种基于同步采样技术的低压台区供电线路老化探测方法

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