CN110762794A - Power supply voltage determining method and device, compressor and air conditioner - Google Patents

Power supply voltage determining method and device, compressor and air conditioner Download PDF

Info

Publication number
CN110762794A
CN110762794A CN201911053526.5A CN201911053526A CN110762794A CN 110762794 A CN110762794 A CN 110762794A CN 201911053526 A CN201911053526 A CN 201911053526A CN 110762794 A CN110762794 A CN 110762794A
Authority
CN
China
Prior art keywords
voltage
power supply
input
load
supply line
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.)
Granted
Application number
CN201911053526.5A
Other languages
Chinese (zh)
Other versions
CN110762794B (en
Inventor
霍兆镜
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.)
GD Midea Air Conditioning Equipment Co Ltd
Original Assignee
Guangdong Midea Refrigeration Equipment 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 Guangdong Midea Refrigeration Equipment Co Ltd filed Critical Guangdong Midea Refrigeration Equipment Co Ltd
Priority to CN201911053526.5A priority Critical patent/CN110762794B/en
Publication of CN110762794A publication Critical patent/CN110762794A/en
Application granted granted Critical
Publication of CN110762794B publication Critical patent/CN110762794B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B31/00—Compressor arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • F25B49/022—Compressor control arrangements
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
    • G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
    • G01R27/08—Measuring resistance by measuring both voltage and current
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/40—Testing power supplies
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00—Control issues
    • F25B2600/02—Compressor control
    • F25B2600/024—Compressor control by controlling the electric parameters, e.g. current or voltage

Abstract

The invention provides a voltage determination method of a power supply, a voltage determination device of the power supply, a compressor, an air conditioner and a computer readable storage medium. The voltage determination method comprises the following steps: controlling or keeping the load to stop running and acquiring the initial voltage of the input end; controlling the load to operate, and acquiring input voltage and corresponding input current of an input end; the internal resistance of the power supply line is determined according to the initial voltage, the input voltage and the input current, and/or the output voltage of the power supply is determined, and the internal resistance of the power supply line is combined during the calculation of the output voltage of the power supply, so that the determined output voltage of the power supply can accurately represent the actual value of the power supply voltage.

Description

Power supply voltage determining method and device, compressor and air conditioner
Technical Field
The invention relates to the technical field of electric appliance control, in particular to a voltage determination method of a power supply, a voltage determination device of the power supply, a compressor, an air conditioner and a computer readable storage medium.
Background
In the related technical scheme, the detection means of the power supply voltage of the vehicle-mounted air conditioner mainly comprises two types:
the first is to use two power lines, one of which is a main power supply line and the other is a power supply voltage detection line, and this method needs to use one power supply voltage detection line separately, thereby increasing the manufacturing cost; the second is a single power line, when the single power line is used, the voltage value detected by the air conditioner port is used as the power voltage, but the power voltage detected by the method is greatly different from the actual value, so that the accurate condition of the power voltage cannot be accurately reflected.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art or the related art.
To this end, a first aspect of the invention provides a method for determining the voltage of a power supply.
In a second aspect of the invention, a voltage determining apparatus for a power supply is provided.
A third aspect of the present invention is to provide a compressor.
A fourth aspect of the present invention is to provide an air conditioner.
A fifth aspect of the present invention is to provide a computer-readable storage medium.
In view of the above, according to a first aspect of the present invention, there is provided a voltage determining method of a power supply, in which a power supply line is connected between an output terminal of the power supply and an input terminal of a load, the voltage determining method comprising: controlling or keeping the load to stop running and acquiring the initial voltage of the input end; controlling the load to operate, and acquiring input voltage and corresponding input current of an input end; the internal resistance of the supply line is determined from the initial voltage, the input voltage and the input current, and/or the output voltage of the power supply source is determined.
The invention provides a method for determining the voltage of a power supply, wherein a power supply line is connected between the power supply and a load, when the output voltage of the power supply is detected, the load is controlled or kept to stop running, the initial voltage of the output end at the moment is obtained, the input voltage and the corresponding input current of the input end of the load in a running state are obtained, to determine the internal resistance of the supply line on the basis of the initial voltage, the input voltage and the input current, to determine the output voltage of the power supply source in combination with the internal resistance of the supply line, because the calculation of the output voltage of the power supply is combined with the internal resistance of the power supply line, the determined output voltage of the power supply can accurately represent the actual value of the power supply voltage, because the technical scheme only needs to use one power supply line, the detection precision is improved while the cost is not increased.
In addition, the method for determining the voltage of the power supply in the above technical solution provided by the present invention may further have the following additional technical features:
in the above technical solution, the step of determining the internal resistance of the power supply line and/or determining the output voltage of the power supply source according to the initial voltage, the input voltage, and the input current specifically includes: determining the internal resistance of the power supply line according to the initial voltage, the input voltage and the input current; controlling a load to work at a target operation frequency, and recording a target input voltage and a target input current corresponding to the target operation frequency; calculating a product between the target input current and the internal resistance to determine a target load voltage of the power supply line; and calculating the sum value between the target input voltage and the target load voltage, and determining the sum value as the output voltage of the power supply.
In the technical scheme, the internal resistance of the power supply line is determined according to the initial voltage, the input voltage and the input current, when the control load operates at the target frequency, the target input voltage and the target input current corresponding to the target operation frequency are recorded, the product between the target input current and the internal resistance is calculated to determine the target load voltage of the power supply line, the sum value between the target input voltage and the target load voltage is further calculated, the calculated sum value is determined as the output voltage of the power supply source, and the output voltage of the power supply source is combined with the target load voltage of the power supply line during calculation, so that the reliability of the output voltage of the power supply source is effectively improved.
In any of the above technical solutions, the step of determining the internal resistance of the power supply line according to the initial voltage, the input voltage, and the input current specifically includes: controlling the load to operate at a plurality of specified operating frequencies; recording input voltage and input current corresponding to any operating frequency to determine an internal resistance value of the power supply line; an average value among the plurality of internal resistance values of the power supply line is calculated to determine the internal resistance of the power supply line.
In the technical scheme, the internal resistance of the power supply line is determined by the input voltage and the input current recorded when the load works at a plurality of specified operating frequencies during calculation, so the calculation accuracy of the calculated internal resistance of the power supply line can be ensured, and the average value among a plurality of internal resistance values of the power supply line is calculated to be used as the internal resistance of the power supply line, wherein the average value scheme has simple calculation logic, less calculated data volume and lower requirement on hardware.
In any one of the above technical solutions, the step of recording the input voltage and the input current corresponding to any one of the operating frequencies to determine an internal resistance value of the power supply line specifically includes: controlling a load to work at a specified operating frequency, and recording an input voltage and an input current corresponding to the specified operating frequency; calculating a voltage difference between the input voltage and an initial voltage; the ratio between the voltage difference and the input current is calculated and determined as an internal resistance value of the supply line.
In the technical scheme, in the process of determining the internal resistance of the power supply line, the characteristic that the power supply source can supply power to the load when the load does not operate is utilized, the input voltage and the input current of the load when the load operates at a specified operating frequency are calculated, the load voltage, namely the voltage difference, of the power supply line at the specified operating frequency is obtained by calculating the voltage difference between the input voltage and the initial voltage, and the internal resistance value of the power supply line at the specified operating frequency is obtained by calculating the ratio of the voltage difference to the input current by utilizing the principle that the current values of all parts of the series circuit are equal in size. In the technical scheme, in the process of determining the internal resistance value of the power supply line, only the load operation needs to be controlled, and the detection of the input voltage and the input current is carried out once, so that the complex calculation is not needed, and the requirement on the processed hardware is low.
In any of the above technical solutions, controlling the load to operate at a plurality of designated operating frequencies specifically includes: determining a magnitude order between a plurality of specified operating frequencies; and controlling the load to work at a plurality of specified operating frequencies in sequence from small to large.
According to the technical scheme, when the load is controlled to work at a plurality of designated running frequencies, the designated running frequencies are determined according to the sequence of magnitude, so that the load works at the designated running frequencies in sequence from small to large, the running frequency adjustment difference is relatively small when different running frequencies are switched by designating the designated running frequency sequences, further the measured input voltage and input current have small fluctuation, the influence of waves existing in the input voltage and the input current on a detection result is reduced, and the voltage detection accuracy of the power supply is improved.
In any of the above technical solutions, the specified operating frequency is smaller than the target operating frequency.
In the technical scheme, the influence of the abnormal occurrence of the input voltage and the input current caused by the outward output power of the load in an overload state on the detection result is reduced by limiting the specified operation frequency to be smaller than the target operation frequency.
According to a second aspect of the present invention, there is provided a voltage determining apparatus of a power supply, comprising: the device comprises a memory and a processor, wherein the memory stores a computer program, and the computer program is used for controlling or keeping a load to stop running and acquiring an initial voltage of an input end when being executed by the processor; controlling the load to operate, and acquiring input voltage and corresponding input current of an input end; the internal resistance of the supply line is determined from the initial voltage, the input voltage and the input current, and/or the output voltage of the power supply source is determined.
The voltage determining device of the power supply comprises a memory and a processor, wherein a power supply line is connected between the power supply and a load, when the output voltage of the power supply is detected, a computer program is executed by the processor to realize such as controlling or keeping the load to stop running, acquiring the initial voltage of the output end at the moment, acquiring the input voltage and the corresponding input current of the input end of the load in a running state, so as to determine the internal resistance of the power supply line according to the initial voltage, the input voltage and the input current, so as to determine the output voltage of the power supply by combining the internal resistance of the power supply line, because the internal resistance of the power supply line is combined during the calculation of the output voltage of the power supply, the determined output voltage of the power supply can accurately represent the actual value of the power supply voltage, and because the technical scheme only needs to use one power supply line, therefore, the detection precision is improved while the cost is not increased.
In addition, the voltage determination device of the power supply in the above technical solution provided by the present invention may further have the following additional technical features:
in the above solution, the computer program, when executed by the processor, implements such as determining the internal resistance of the power supply line from the initial voltage, the input voltage and the input current; controlling a load to work at a target operation frequency, and recording a target input voltage and a target input current corresponding to the target operation frequency; calculating a product between the target input current and the internal resistance to determine a target load voltage of the power supply line; and calculating the sum value between the target input voltage and the target load voltage, and determining the sum value as the output voltage of the power supply.
In the technical scheme, when the computer program is executed by the processor, the internal resistance of the power supply line is determined according to the initial voltage, the input voltage and the input current, when the control load operates at the target frequency, the target input voltage and the target input current corresponding to the target operation frequency are recorded, the target load voltage of the power supply line is determined by calculating the product of the target input current and the internal resistance, the sum value between the target input voltage and the target load voltage is further calculated, the calculated sum value is determined as the output voltage of the power supply source, and the output voltage of the power supply source is combined with the target load voltage of the power supply line when calculation is carried out, so the reliability of the output voltage of the power supply source is effectively improved.
In any of the above solutions, the computer program, when executed by the processor, implements, for example, controlling the load to operate at a plurality of specified operating frequencies; recording input voltage and input current corresponding to any operating frequency to determine an internal resistance value of the power supply line; an average value among the plurality of internal resistance values of the power supply line is calculated to determine the internal resistance of the power supply line.
In the technical scheme, the internal resistance of the power supply line is determined by the input voltage and the input current recorded when the load works at a plurality of specified operating frequencies during calculation, so the calculation accuracy of the calculated internal resistance of the power supply line can be ensured, and the average value among a plurality of internal resistance values of the power supply line is calculated to be used as the internal resistance of the power supply line, wherein the average value scheme has simple calculation logic, less calculated data volume and lower requirement on hardware.
In any of the above technical solutions, when executed by the processor, the computer program implements, for example, controlling the load to operate at a specified operating frequency, and recording an input voltage and an input current corresponding to the specified operating frequency; calculating a voltage difference between the input voltage and an initial voltage; the ratio between the voltage difference and the input current is calculated and determined as an internal resistance value of the supply line.
In the technical scheme, in the process of determining the internal resistance of the power supply line, the characteristic that the power supply source can supply power to the load when the load does not operate is utilized, the input voltage and the input current of the load when the load operates at a specified operating frequency are calculated, the load voltage, namely the voltage difference, of the power supply line at the specified operating frequency is obtained by calculating the voltage difference between the input voltage and the initial voltage, and the internal resistance value of the power supply line at the specified operating frequency is obtained by calculating the ratio of the voltage difference to the input current by utilizing the principle that the current values of all parts of the series circuit are equal in size. In the technical scheme, in the process of determining the internal resistance value of the power supply line, only the load operation needs to be controlled, and the detection of the input voltage and the input current is carried out once, so that the complex calculation is not needed, and the requirement on the processed hardware is low.
In any of the above solutions, the computer program, when executed by the processor, implements, for example, determining a magnitude order between a plurality of specified operating frequencies; and controlling the load to work at a plurality of specified operating frequencies in sequence from small to large.
According to the technical scheme, when the load is controlled to work at a plurality of designated running frequencies, the designated running frequencies are determined according to the sequence of magnitude, so that the load works at the designated running frequencies in sequence from small to large, the running frequency adjustment difference is relatively small when different running frequencies are switched by designating the designated running frequency sequences, further the measured input voltage and input current have small fluctuation, the influence of waves existing in the input voltage and the input current on a detection result is reduced, and the voltage detection accuracy of the power supply is improved.
In any of the above technical solutions, the specified operating frequency is smaller than the target operating frequency.
In the technical scheme, the influence of the abnormal occurrence of the input voltage and the input current caused by the outward output power of the load in an overload state on the detection result is reduced by limiting the specified operation frequency to be smaller than the target operation frequency.
According to a third aspect of the present invention, there is provided a compressor comprising: the compressor comprises a compressor body, wherein the input end of the compressor body is connected to the output end of a power supply through a power supply line; according to the voltage determining device of the power supply, the voltage determining device is connected to the input end of the compressor body to determine the output voltage of the power supply under the specified input power.
The compressor provided by the invention comprises the voltage determining device of any one of the power supplies and the compressor body connected with the voltage determining device, and the compressor is provided with the voltage determining device of the power supply, so that the description is omitted.
According to a fourth aspect of the present invention, there is provided an air conditioner comprising: the voltage determination device of an electric power supply source as defined in any one of the above or the compressor as defined in any one of the above.
In an embodiment of the present invention, the air conditioner includes the voltage determination device of the power supply source according to any one of the above-described embodiments or the compressor according to any one of the above-described embodiments, and therefore, the proposed air conditioner has all the advantageous effects of the voltage determination device of the power supply source according to any one of the above-described embodiments.
In the above technical solution, the air conditioner further includes a power supply, and the power supply is configured to supply power to a load, where the load may be a compressor.
According to a fifth aspect of the present invention, there is provided a computer-readable storage medium having stored thereon a computer program which, when executed, carries out the steps of the method of determining the voltage of a power supply source as claimed in any one of the preceding claims.
The computer-readable storage medium provided by the present invention, wherein the computer program stored in the computer-readable storage medium implements the steps of the voltage determining method of any one of the power supplies when running, so that all the beneficial technical effects of the voltage determining method of any one of the power supplies are achieved, and are not described herein again.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 shows a schematic flow diagram of a method for voltage determination of a power supply according to an embodiment of the invention;
FIG. 2 shows a schematic flow diagram for determining an internal resistance of a supply line from an initial voltage, an input voltage and an input current, and/or determining an output voltage of a power supply, according to an embodiment of the invention;
FIG. 3 shows a schematic flow diagram for determining the internal resistance of a power supply line from an initial voltage, an input voltage, and an input current, according to one embodiment of the invention;
FIG. 4 illustrates a flow chart for recording input voltage and input current for any operating frequency to determine an internal resistance value of a power supply line, in accordance with one embodiment of the present invention;
FIG. 5 illustrates a flow diagram for controlling a load to operate at a plurality of specified operating frequencies, according to one embodiment of the present invention;
FIG. 6 shows a flow diagram of a method of determining a voltage of a power supply according to one embodiment of the invention;
FIG. 7 shows a schematic block diagram of a voltage determination apparatus of a power supply according to one embodiment of the present invention;
FIG. 8 shows a schematic block diagram of a smart compressor according to one embodiment of the present invention;
FIG. 9 illustrates a schematic block diagram of an air conditioner according to an embodiment of the present invention;
fig. 10 shows a schematic block diagram of an air conditioner according to another embodiment of the present invention.
Detailed Description
So that the manner in which the above recited aspects, features and advantages of the present invention can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to the embodiments thereof which are illustrated in the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
Example one
In an embodiment of the present invention, as shown in fig. 1, a method for determining a voltage of a power supply is provided, in which a power supply line is connected between an output terminal of the power supply and an input terminal of a load, the method for determining the voltage of the power supply includes:
step S102, controlling or keeping the load to stop running, and acquiring the initial voltage of the input end;
step S104, controlling the load to operate, and acquiring the input voltage and the corresponding input current of the input end;
step S106, determining the internal resistance of the power supply line according to the initial voltage, the input voltage and the input current, and/or determining the output voltage of the power supply.
The invention provides a method for determining the voltage of a power supply, wherein a power supply line is connected between the power supply and a load, when the output voltage of the power supply is detected, the load is controlled or kept to stop running, the initial voltage of the output end at the moment is obtained, the input voltage and the corresponding input current of the input end of the load in a running state are obtained, to determine the internal resistance of the supply line on the basis of the initial voltage, the input voltage and the input current, to determine the output voltage of the power supply source in combination with the internal resistance of the supply line, because the calculation of the output voltage of the power supply is combined with the internal resistance of the power supply line, the determined output voltage of the power supply can accurately represent the actual value of the power supply voltage, because the embodiment only needs to use one power supply line, the detection precision is improved while the cost is not increased.
In one embodiment thereof, step S106 includes determining only the internal resistance of the power supply line based on the initial voltage, the input voltage, and the input current, so as to calculate the output voltage of the power supply source based on the determined internal resistance of the power supply line.
In one embodiment, step S106 includes determining an output voltage of the power supply according to the initial voltage, the input voltage, and the input current.
In one embodiment, step S106 includes determining an internal resistance of the power supply line based on the initial voltage, the input voltage, and the input current, and determining an output voltage of the power supply source based on the internal resistance of the power supply line, the initial voltage, the input voltage, and the input current.
In an embodiment, as shown in fig. 2, the step of determining the internal resistance of the power supply line according to the initial voltage, the input voltage and the input current, and/or determining the output voltage of the power supply specifically includes:
step S202, determining the internal resistance of the power supply line according to the initial voltage, the input voltage and the input current;
step S204, controlling the load to work at a target operation frequency, and recording a target input voltage and a target input current corresponding to the target operation frequency;
step S206, calculating the product between the target input current and the internal resistance to determine the target load voltage of the power supply line;
in step S208, the sum of the target input voltage and the target load voltage is calculated, and the output voltage of the power supply is determined.
In the embodiment, the internal resistance of the power supply line is firstly determined according to the initial voltage, the input voltage and the input current, when the control load operates at the target frequency, the target input voltage and the target input current corresponding to the target operation frequency are recorded, the product between the target input current and the internal resistance is calculated to determine the target load voltage of the power supply line, the sum value between the target input voltage and the target load voltage is further calculated, and the calculated sum value is used as the output voltage of the power supply source.
In one embodiment, the specified operating frequency is less than the target operating frequency.
In the embodiment, the influence of the abnormality of the input voltage and the input current caused by the output of the power to the outside when the load is in an overload state on the detection result is reduced by limiting the specified operation frequency to be smaller than the target operation frequency.
In an embodiment, as shown in fig. 3, the step of determining the internal resistance of the power supply line according to the initial voltage, the input voltage and the input current specifically includes:
step S302, controlling the load to work at a plurality of specified operating frequencies;
step S304, recording input voltage and input current corresponding to any operating frequency to determine an internal resistance value of the power supply line;
in step S306, an average value among a plurality of internal resistance values of the power supply line is calculated to determine the internal resistance of the power supply line.
In this embodiment, the internal resistance of the power supply line is determined at the time of calculation by the input voltage and the input current recorded when the load operates at the plurality of specified operating frequencies, so that the calculation accuracy of the calculated internal resistance of the power supply line can be ensured, and the average value among the plurality of internal resistance values of the power supply line is calculated as the internal resistance of the power supply line, wherein the average value scheme has simple calculation logic, a small amount of calculated data, and low requirements on hardware.
In one embodiment, the plurality of specified operating frequencies are Ft/n, 2Ft/n, 3Ft/n … Ft.
In one embodiment, the number of the operating frequencies is positively correlated with the detection accuracy of the output voltage of the power supply, and the higher the number of the operating frequencies is, the higher the detection accuracy of the output voltage of the power supply is.
In one embodiment, the number of the operating frequencies is positively correlated with the set time duration for detecting the output voltage of the power supply, i.e., the longer the set time duration, the greater the number of the operating frequencies.
In an embodiment of the present invention, as shown in fig. 4, the step of recording the input voltage and the input current corresponding to any operating frequency to determine an internal resistance value of the power supply line specifically includes:
step S402, controlling the load to work at a specified running frequency, and recording an input voltage and an input current corresponding to the specified running frequency;
step S404, calculating a voltage difference between the input voltage and the initial voltage;
in step S406, a ratio between the voltage difference and the input current is calculated and determined as an internal resistance value of the power supply line.
In this embodiment, in the process of determining an internal resistance of the power supply line, the characteristic that the power supply source does not supply power to the load when the load is not operating and the characteristic that the power supply source supplies power to the load when the load is operating are utilized, the input voltage and the input current when the load operates at a specified operating frequency are calculated, the load voltage of the power supply line at the specified operating frequency, namely the voltage difference, is obtained by calculating the voltage difference between the input voltage and the initial voltage, and the internal resistance value of the power supply line at the specified operating frequency is obtained by calculating the ratio between the voltage difference and the input current by utilizing the principle that the current values of the series circuit are equal in magnitude. In the above embodiment, in the process of determining the internal resistance value of the power supply line, only the load operation needs to be controlled, and the input voltage and the input current need to be detected once, no complex calculation is needed, and the requirement on the processing hardware is low.
Example two
In any of the above embodiments, as shown in fig. 5, controlling the load to operate at a plurality of designated operating frequencies specifically includes:
step S502, determining the magnitude sequence among a plurality of specified operating frequencies;
and step S504, controlling the load to work at a plurality of specified operation frequencies in sequence from small to large.
In the embodiment, when the load is controlled to work at a plurality of designated operating frequencies, the designated operating frequencies are determined according to the sequence of magnitude, so that the load works at the designated operating frequencies in sequence from small to large, and by designating the designated operating frequencies, the difference of operating frequency adjustment is relatively small when switching is performed between different operating frequencies, further the measured input voltage and input current have small fluctuation, the influence of waves existing in the input voltage and input current on the detection result is reduced, and the detection precision of the voltage of the power supply is improved.
EXAMPLE III
In an embodiment of the present invention, the method is applied to an air conditioner, wherein the air conditioner includes a compressor (i.e., a load) and a battery (i.e., a power supply) for supplying power to the compressor through a power supply line, and as shown in fig. 6, the method for determining the voltage of the power supply includes:
step S602, detecting a port voltage Uin0 of a load input end;
step S604, starting the air conditioner, controlling the running frequency of the compressor to be Ft/n, and detecting the input voltage Uin1 and the current Iin1 at the moment after the input power is stable;
step S606, starting the air conditioner and controlling the running frequency of the compressor to be 2 XFt/n, detecting the input voltage Uin2 and the current Iin2 at the moment after the input power is stable until the air conditioner is started and the running frequency of the compressor is controlled to be n XFt/n, and detecting the input voltage Uinn and the current Iinn at the moment after the input power is stable;
step S608, calculating the power-supply-line internal resistance Rn ═ u in0)/Iinn, and calculating the power-supply-line internal resistance average value R ═ R1+ R2+ … Rn)/n;
in step S610, when the air conditioner is operated at any power, the battery voltage is U ═ Uin + Iin × R.
In the embodiment, the outdoor unit controls the running frequency of the compressor to be Ft/n (n is 2, 3 and 4 … … Ft) according to the target frequency Ft sent by the indoor unit, the value of n can be taken according to the starting speed of the air conditioner, if the air conditioner needs to be started quickly, n can be 2-3, if the air conditioner does not need to be started quickly, a plurality of points can be taken, and the detection accuracy is higher when the values are more.
In one embodiment, the method for calculating the average value R of the internal resistance of the power supply line, which is (R1+ R2+ … Rn)/n, is the simplest processing method, and the remaining data may be processed in a software filtering manner, for example, Rn sorts the maximum value and the minimum value to discard, so as to eliminate the deviation of the maximum value and the minimum value to the whole data, thereby improving the calculation accuracy of the voltage of the power supply.
Example four
In one embodiment of the present invention, as shown in fig. 7, a voltage determining apparatus 700 of a power supply is provided, including: a memory 702 and a processor 704, wherein the memory 702 stores a computer program, and the computer program is executed by the processor 704 to control or keep the load from running and obtain an initial voltage of the input end; controlling the load to operate, and acquiring input voltage and corresponding input current of an input end; the internal resistance of the supply line is determined from the initial voltage, the input voltage and the input current, and/or the output voltage of the power supply source is determined.
The voltage determination apparatus 700 of the power supply according to the present invention comprises a memory 702 and a processor 704, wherein a power supply line is connected between the power supply and the load, and when detecting the output voltage of the power supply, a computer program is executed by the processor 704 to perform, for example, controlling or keeping the load from running, and obtaining an initial voltage of an output terminal at the time, obtaining an input voltage of an input terminal and a corresponding input current of the load in a running state, so as to determine an internal resistance of the power supply line according to the initial voltage, the input voltage, and the input current, so as to determine the output voltage of the power supply in combination with the internal resistance of the power supply line, since the calculation of the output voltage of the power supply is combined with the internal resistance of the power supply line, the determined output voltage of the power supply can accurately represent an actual value of the power supply voltage, since only one power supply line is, therefore, the detection precision is improved while the cost is not increased.
In an embodiment thereof, the computer program when executed by the processor 704 enables, for example, determining an internal resistance of the power supply line based on the initial voltage, the input voltage and the input current, for calculating an output voltage of the power supply source based on the determined internal resistance of the power supply line.
In an embodiment thereof, the computer program when executed by the processor 704 enables, for example, determining the output voltage of the power supply based on the initial voltage, the input voltage and the input current.
In an embodiment thereof, the computer program when executed by the processor 704 enables, for example, determining the internal resistance of the power supply line from the initial voltage, the input voltage and the input current, and determining the output voltage of the power supply source from the internal resistance of the power supply line, the initial voltage, the input voltage and the input current.
In an embodiment thereof, the computer program when executed by the processor 704 enables, for example, determining an internal resistance of the supply line based on the initial voltage, the input voltage and the input current; controlling a load to work at a target operation frequency, and recording a target input voltage and a target input current corresponding to the target operation frequency; calculating a product between the target input current and the internal resistance to determine a target load voltage of the power supply line; and calculating the sum value between the target input voltage and the target load voltage, and determining the sum value as the output voltage of the power supply.
In this embodiment, the computer program when executed by the processor 704 implements, for example, determining the internal resistance of the power supply line based on the initial voltage, the input voltage and the input current, recording a target input voltage and a target input current corresponding to a target operating frequency when the control load is operating at the target frequency, determining a target load voltage of the power supply line by calculating a product between the target input current and the internal resistance, further calculating a sum between the target input voltage and the target load voltage, and determining the calculated sum as the output voltage of the power supply source, which effectively increases the reliability of the output voltage of the power supply source since the output voltage of the power supply source is combined with the target load voltage of the power supply line when the calculation is performed.
In one embodiment, the specified operating frequency is less than the target operating frequency.
In the embodiment, the influence of the abnormality of the input voltage and the input current caused by the output of the power to the outside when the load is in an overload state on the detection result is reduced by limiting the specified operation frequency to be smaller than the target operation frequency.
In one embodiment thereof, the computer program when executed by the processor 704 implements, for example, controlling a load to operate at a plurality of specified operating frequencies; recording input voltage and input current corresponding to any operating frequency to determine an internal resistance value of the power supply line; an average value among the plurality of internal resistance values of the power supply line is calculated to determine the internal resistance of the power supply line.
In this embodiment, the internal resistance of the power supply line is determined at the time of calculation by the input voltage and the input current recorded when the load operates at the plurality of specified operating frequencies, so that the calculation accuracy of the calculated internal resistance of the power supply line can be ensured, and the average value among the plurality of internal resistance values of the power supply line is calculated as the internal resistance of the power supply line, wherein the average value scheme has simple calculation logic, a small amount of calculated data, and low requirements on hardware.
In one embodiment, the plurality of specified operating frequencies are Fn/N, 2Fn/N, 3Fn/N … Fn.
In one embodiment, the number of the operating frequencies is positively correlated with the detection accuracy of the output voltage of the power supply, and the higher the number of the operating frequencies is, the higher the detection accuracy of the output voltage of the power supply is.
In one embodiment, the number of the operating frequencies is positively correlated with the set time duration for detecting the output voltage of the power supply, i.e., the longer the set time duration, the greater the number of the operating frequencies.
In one embodiment, the computer program when executed by the processor 704 implements, for example, controlling the load to operate at a specified operating frequency and recording the input voltage and input current corresponding to the specified operating frequency; calculating a voltage difference between the input voltage and an initial voltage; the ratio between the voltage difference and the input current is calculated and determined as an internal resistance value of the supply line.
In this embodiment, in the process of determining an internal resistance of the power supply line, the characteristic that the power supply source does not supply power to the load when the load is not operating and the characteristic that the power supply source supplies power to the load when the load is operating are utilized, the input voltage and the input current when the load operates at a specified operating frequency are calculated, the load voltage of the power supply line at the specified operating frequency, namely the voltage difference, is obtained by calculating the voltage difference between the input voltage and the initial voltage, and the internal resistance value of the power supply line at the specified operating frequency is obtained by calculating the ratio between the voltage difference and the input current by utilizing the principle that the current values of the series circuit are equal in magnitude. In the above embodiment, in the process of determining the internal resistance value of the power supply line, only the load operation needs to be controlled, and the input voltage and the input current need to be detected once, no complex calculation is needed, and the requirement on the processing hardware is low.
EXAMPLE five
In any of the above embodiments, the computer program when executed by the processor 704 performs the functions as determining a magnitude order between a plurality of specified operating frequencies; and controlling the load to work at a plurality of specified operating frequencies in sequence from small to large.
In the embodiment, when the load is controlled to work at a plurality of designated operating frequencies, the designated operating frequencies are determined according to the sequence of magnitude, so that the load works at the designated operating frequencies in sequence from small to large, and by designating the designated operating frequencies, the difference of operating frequency adjustment is relatively small when switching is performed between different operating frequencies, further the measured input voltage and input current have small fluctuation, the influence of waves existing in the input voltage and input current on the detection result is reduced, and the detection precision of the voltage of the power supply is improved.
EXAMPLE six
In one embodiment of the present invention, as shown in fig. 8, there is provided a compressor 800 including: the compressor comprises a compressor body 802, wherein the input end of the compressor body 802 is connected to the output end of a power supply through a power supply line; as in the voltage determining apparatus 700 of the power supply according to any of the above embodiments, the voltage determining apparatus 700 of the power supply is connected to the input terminal of the compressor body 802 to determine the output voltage of the power supply at a given input power.
The compressor 800 provided by the present invention includes any one of the above-mentioned voltage determination devices 700 for power supply and the compressor body 802 connected thereto, and the compressor 800 has all the beneficial technical effects of the voltage determination device 700 for power supply, and therefore, the description thereof is omitted.
EXAMPLE seven
In one embodiment of the present invention, as shown in fig. 9, an air conditioner 900 includes: the voltage determination device 700 of the power supply source according to any one of the above or as shown in fig. 10, the air conditioner 1000 includes the compressor 800 according to any one of the above.
In an embodiment of the present invention, the air conditioner 900 includes the voltage determining apparatus 700 of the power supply or the air conditioner 1000 described above and includes the compressor 800 described above, so that the proposed air conditioner 900 or the air conditioner 1000 has all the beneficial technical effects of the voltage determining apparatus 700 of the power supply or the compressor 800 described above in any embodiment, and details are not repeated herein.
In the above embodiments, the air conditioner 900 or the air conditioner 1000 further includes a power supply (not shown in the figure) for supplying power to a load, wherein the load may be a compressor.
Example eight
In an embodiment of the invention, a computer-readable storage medium is proposed, in which a computer program is stored, which, when executed, carries out the steps of the method for determining the voltage of a power supply source as defined in any one of the above.
The computer-readable storage medium provided by the present invention, wherein the computer program stored in the computer-readable storage medium implements the steps of the voltage determining method of any one of the power supplies when running, so that all the beneficial technical effects of the voltage determining method of any one of the power supplies are achieved, and are not described herein again.
In the description of the present invention, the terms "plurality" or "a plurality" refer to two or more, and unless otherwise specifically limited, the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention; the terms "connected," "mounted," "secured," and the like are to be construed broadly and include, for example, fixed connections, removable connections, or integral connections; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description of the present invention, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In the present invention, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A voltage determination method for a power supply, wherein a power supply line is connected between an output terminal of the power supply and an input terminal of a load, the voltage determination method comprising:
controlling or keeping the load to stop running, and acquiring the initial voltage of the input end;
controlling the load to operate, and acquiring the input voltage and the corresponding input current of the input end;
determining an internal resistance of the supply line from the initial voltage, the input voltage and the input current, and/or determining an output voltage of the power supply source.
2. The method according to claim 1, characterized in that the step of determining the internal resistance of the supply line, and/or the output voltage of the power supply source, from the initial voltage, the input voltage and the input current, comprises in particular:
determining an internal resistance of the power supply line from the initial voltage, the input voltage, and the input current;
controlling the load to work at a target operation frequency, and recording a target input voltage and a target input current corresponding to the target operation frequency;
calculating a product between the target input current and the internal resistance to determine a target load voltage of the power supply line;
and calculating the sum value between the target input voltage and the target load voltage, and determining the sum value as the output voltage of the power supply.
3. The method according to claim 2, wherein the step of determining the internal resistance of the power supply line from the initial voltage, the input voltage and the input current comprises:
controlling the load to operate at a plurality of specified operating frequencies;
recording the input voltage and input current corresponding to any one of the operating frequencies to determine an internal resistance value of the power supply line;
calculating an average value among a plurality of internal resistance values of the power supply line to determine the internal resistance of the power supply line.
4. The method for determining the voltage of a power supply according to claim 3, wherein the step of recording the input voltage and the input current corresponding to any one of the operating frequencies to determine an internal resistance value of the power supply line comprises:
controlling the load to work at a specified running frequency, and recording an input voltage and an input current corresponding to the specified running frequency;
calculating a voltage difference between the input voltage and the initial voltage;
the ratio between the voltage difference and the input current is calculated and determined as an internal resistance value of the power supply line.
5. The method for determining the voltage of the power supply according to claim 3, wherein the controlling the load to operate at a plurality of designated operating frequencies specifically comprises:
determining a magnitude order between a plurality of the specified operating frequencies;
and controlling the load to work at a plurality of specified operating frequencies in sequence from small to large.
6. The power supply voltage determining method according to any one of claims 3 to 5,
the specified operating frequency is less than the target operating frequency.
7. A voltage determining apparatus of a power supply, comprising:
a memory and a processor, the memory storing a computer program,
the computer program, when being executed by the processor, realizes the steps of the voltage determination method of the power supply source according to any one of claims 1 to 6.
8. A compressor, comprising:
the compressor comprises a compressor body, wherein the input end of the compressor body is connected to the output end of a power supply through a power supply line;
the power supply voltage determining apparatus of claim 7, wherein the voltage determining apparatus is connected to an input of the compressor body to determine an output voltage of the power supply at a specified input power.
9. An air conditioner, comprising:
voltage determination device of an electrical power supply source according to claim 7, or compressor according to claim 8.
10. A computer-readable storage medium, comprising:
the computer-readable storage medium has stored therein a computer program that, when executed, implements the voltage determination method of the power supply source according to any one of claims 1 to 6.
CN201911053526.5A 2019-10-31 2019-10-31 Power supply voltage determining method and device, compressor and air conditioner Active CN110762794B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911053526.5A CN110762794B (en) 2019-10-31 2019-10-31 Power supply voltage determining method and device, compressor and air conditioner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911053526.5A CN110762794B (en) 2019-10-31 2019-10-31 Power supply voltage determining method and device, compressor and air conditioner

Publications (2)

Publication Number Publication Date
CN110762794A true CN110762794A (en) 2020-02-07
CN110762794B CN110762794B (en) 2021-07-20

Family

ID=69335475

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201911053526.5A Active CN110762794B (en) 2019-10-31 2019-10-31 Power supply voltage determining method and device, compressor and air conditioner

Country Status (1)

Country Link
CN (1) CN110762794B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113346575A (en) * 2021-05-24 2021-09-03 青岛海尔空调器有限总公司 Vehicle and input voltage adjusting method of vehicle-mounted air conditioner of vehicle
CN113574488A (en) * 2020-10-29 2021-10-29 深圳市大疆创新科技有限公司 Power supply control method and device and power utilization equipment

Citations (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1554992A (en) * 2003-12-25 2004-12-15 上海交通大学 Automatic voltage stabilizing regulation power source with variable far end load
CN1749763A (en) * 2005-11-03 2006-03-22 北京科技大学 Method and device for detecting resistance
CN1818684A (en) * 2006-03-03 2006-08-16 广东省电子技术研究所 Method and device for measuring battery internal resistance
US20080110342A1 (en) * 2006-11-13 2008-05-15 Research Triangle Institute Particle filter system incorporating nanofibers
CN102291081A (en) * 2010-06-18 2011-12-21 北京茨浮电气有限公司 Method for tracking dynamic load of frequency converter
CN102647141A (en) * 2011-12-26 2012-08-22 东方日立(成都)电控设备有限公司 Voltage vector closed-loop compensation
CN102981092A (en) * 2012-11-15 2013-03-20 广东电网公司肇庆供电局 Detecting device of electric transmission circuit ground connection state
CN103426453A (en) * 2012-05-25 2013-12-04 华为技术有限公司 Dynamic voltage frequency scaling method and system
CN103595542A (en) * 2012-08-13 2014-02-19 中国电信股份有限公司 A power supply terminal device, a power supply system and a power supply method
CN104967201A (en) * 2015-08-05 2015-10-07 青岛海信移动通信技术股份有限公司 Fast-charging method, mobile terminal and power adapter capable of being charged directly
CN106325343A (en) * 2015-06-18 2017-01-11 宏碁股份有限公司 Power supply device with electric wire drop compensation
CN206850425U (en) * 2017-06-17 2018-01-05 艾德克斯电子（南京）有限公司 A kind of SENSE distal ends voltage compensating circuit of dc source
JP2018081796A (en) * 2016-11-15 2018-05-24 トヨタ自動車株式会社 Battery control system
JP2018096804A (en) * 2016-12-13 2018-06-21 東京電力ホールディングス株式会社 Insulation resistance measurement method of dc power supply circuit
CN108702103A (en) * 2016-04-11 2018-10-23 株式会社日立产机系统 Power-converting device
CN109342801A (en) * 2018-11-21 2019-02-15 江西洪都航空工业集团有限责任公司 Direct current supply line apparatus for testing pressure drop
CN109473990A (en) * 2019-01-10 2019-03-15 珠海格力电器股份有限公司 Power-supply fluctuation adjusting method, system and the electric appliance of electric appliance
CN109507472A (en) * 2017-09-14 2019-03-22 佛山市顺德区顺达电脑厂有限公司 The voltage detection method of memory test module

Patent Citations (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1554992A (en) * 2003-12-25 2004-12-15 上海交通大学 Automatic voltage stabilizing regulation power source with variable far end load
CN1749763A (en) * 2005-11-03 2006-03-22 北京科技大学 Method and device for detecting resistance
CN1818684A (en) * 2006-03-03 2006-08-16 广东省电子技术研究所 Method and device for measuring battery internal resistance
US20080110342A1 (en) * 2006-11-13 2008-05-15 Research Triangle Institute Particle filter system incorporating nanofibers
CN102291081A (en) * 2010-06-18 2011-12-21 北京茨浮电气有限公司 Method for tracking dynamic load of frequency converter
CN102647141A (en) * 2011-12-26 2012-08-22 东方日立(成都)电控设备有限公司 Voltage vector closed-loop compensation
CN103426453A (en) * 2012-05-25 2013-12-04 华为技术有限公司 Dynamic voltage frequency scaling method and system
CN103595542A (en) * 2012-08-13 2014-02-19 中国电信股份有限公司 A power supply terminal device, a power supply system and a power supply method
CN102981092A (en) * 2012-11-15 2013-03-20 广东电网公司肇庆供电局 Detecting device of electric transmission circuit ground connection state
CN106325343A (en) * 2015-06-18 2017-01-11 宏碁股份有限公司 Power supply device with electric wire drop compensation
CN104967201A (en) * 2015-08-05 2015-10-07 青岛海信移动通信技术股份有限公司 Fast-charging method, mobile terminal and power adapter capable of being charged directly
CN108702103A (en) * 2016-04-11 2018-10-23 株式会社日立产机系统 Power-converting device
JP2018081796A (en) * 2016-11-15 2018-05-24 トヨタ自動車株式会社 Battery control system
JP2018096804A (en) * 2016-12-13 2018-06-21 東京電力ホールディングス株式会社 Insulation resistance measurement method of dc power supply circuit
CN206850425U (en) * 2017-06-17 2018-01-05 艾德克斯电子（南京）有限公司 A kind of SENSE distal ends voltage compensating circuit of dc source
CN109507472A (en) * 2017-09-14 2019-03-22 佛山市顺德区顺达电脑厂有限公司 The voltage detection method of memory test module
CN109342801A (en) * 2018-11-21 2019-02-15 江西洪都航空工业集团有限责任公司 Direct current supply line apparatus for testing pressure drop
CN109473990A (en) * 2019-01-10 2019-03-15 珠海格力电器股份有限公司 Power-supply fluctuation adjusting method, system and the electric appliance of electric appliance

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113574488A (en) * 2020-10-29 2021-10-29 深圳市大疆创新科技有限公司 Power supply control method and device and power utilization equipment
CN113346575A (en) * 2021-05-24 2021-09-03 青岛海尔空调器有限总公司 Vehicle and input voltage adjusting method of vehicle-mounted air conditioner of vehicle
CN113346575B (en) * 2021-05-24 2023-10-20 青岛海尔空调器有限总公司 Vehicle and input voltage adjusting method of vehicle-mounted air conditioner

Also Published As

Publication number Publication date
CN110762794B (en) 2021-07-20

Similar Documents

Publication Publication Date Title
US11906591B2 (en) Insulation resistance measurement apparatus and method thereof
CN105846489B (en) Battery charging and discharging control system and battery charging and discharging control method
KR101742340B1 (en) Method for determining and/or predicting the maximum performance capacity of a battery
CN110762794B (en) Power supply voltage determining method and device, compressor and air conditioner
US7541775B2 (en) Enhanced-accuracy battery capacity prediction using multiple discharge curves
EP3064952B1 (en) Energy storage device management apparatus, energy storage device management method, energy storage device module, energy storage device management program, and movable body
US8400116B2 (en) Method and apparatus for calculating power-off duration time and state of charging of battery
US20220365139A1 (en) Method for estimating an operating parameter of a battery unit
EP3396774A1 (en) Method and system for effective battery cell balancing through duty control
US10564223B2 (en) Power storage system, control system of secondary battery, and control method of secondary battery
CN111289902B (en) Method for estimating battery electric quantity state
US10578675B2 (en) Estimation method for battery capacity
KR20140001383A (en) Apparatus and method thereof for presuming state of charge of battery
CN112313829A (en) Device and method for performing measurements on a battery cell
CN113865036A (en) Control method and control device for portable air conditioner
WO2018179852A1 (en) Storage battery control device and control method
US20220003822A1 (en) Battery control device
CN1125349C (en) Voltage indicator for indicating that voltage of battery passes given value
CN110556592A (en) battery pack temperature detection method and device and electric tool
CN108870489A (en) Push-rod electric machine adaptively stalls method, apparatus and storage medium, equipment
US11448703B2 (en) Device and method for estimating SOC via open-circuit voltage of battery
CN113433458A (en) Method and device for determining state of health of battery
CN108631655A (en) The intelligent power module of motor control assembly
CN117269804B (en) Device and method for detecting resistance of battery module of electric energy storage system
CN113270649B (en) Battery control device, battery control method, storage medium, and vehicle

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant