CN117092543B - Photovoltaic energy storage battery aging test method, system and medium - Google Patents
Photovoltaic energy storage battery aging test method, system and medium Download PDFInfo
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- CN117092543B CN117092543B CN202311332934.0A CN202311332934A CN117092543B CN 117092543 B CN117092543 B CN 117092543B CN 202311332934 A CN202311332934 A CN 202311332934A CN 117092543 B CN117092543 B CN 117092543B
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- 238000004146 energy storage Methods 0.000 title claims abstract description 251
- 230000032683 aging Effects 0.000 title claims abstract description 131
- 238000010998 test method Methods 0.000 title claims abstract description 31
- 238000007599 discharging Methods 0.000 claims abstract description 75
- 238000012360 testing method Methods 0.000 claims abstract description 68
- 238000004891 communication Methods 0.000 claims description 58
- 238000000034 method Methods 0.000 claims description 37
- 238000012937 correction Methods 0.000 claims description 8
- 230000002431 foraging effect Effects 0.000 claims description 2
- 230000032677 cell aging Effects 0.000 claims 1
- 210000000352 storage cell Anatomy 0.000 claims 1
- 230000003679 aging effect Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
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- 230000003287 optical effect Effects 0.000 description 2
- 230000005518 electrochemistry Effects 0.000 description 1
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- 238000012545 processing Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/392—Determining battery ageing or deterioration, e.g. state of health
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- 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
- G01R31/34—Testing dynamo-electric machines
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/385—Arrangements for measuring battery or accumulator variables
- G01R31/387—Determining ampere-hour charge capacity or SoC
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Abstract
The embodiment of the application provides a photovoltaic energy storage battery aging test method, a photovoltaic energy storage battery aging test system and a photovoltaic energy storage battery aging test medium, wherein the photovoltaic energy storage battery aging test method comprises the following steps: connecting energy storage batteries of the two energy storage machines, and performing ageing role competition to obtain competition results; if the competition result is successful, setting a corresponding energy storage machine as a charger, and if the competition result is failed, setting a corresponding energy storage machine as a discharge machine; acquiring parameter information of a charger, setting charging parameters according to the parameter information of the charger, charging the charger according to the charging parameters, and acquiring state information of the charger in real time; if the state information of the charger meets the charging requirement, switching the charger into a discharging machine; setting a discharge parameter according to the parameter information of the discharge machine, continuously discharging the discharge machine according to the discharge parameter, and acquiring the state information of the discharge machine in real time; if the state information of the discharging machine meets the requirement, switching the discharging machine into a charger; and switching according to the states of the charger and the discharge machine to perform continuous test on the energy storage battery.
Description
Technical Field
The application relates to the field of aging of energy storage batteries, in particular to a photovoltaic energy storage battery aging test method, a photovoltaic energy storage battery aging test system and a photovoltaic energy storage battery aging test medium.
Background
The conventional energy storage machine needs to use a real battery for charge, discharge and aging, and has the following problems: the battery is used as ageing equipment, ageing and inefficacy of battery can be accelerated to ageing room abominable operational environment (like high temperature, heavy current charge and discharge), and charge and discharge security can't guarantee, and ageing efficiency loss is great, except the efficiency loss of machine itself, and the energy loss that battery electrochemistry side reaction brought still, the electric quantity of battery is inconvenient to control, can't realize long-time constant high-power charge and discharge, and the ageing effect of energy storage machine is uncontrollable, and can't use simple parameter such as charge and discharge electric quantity to measure the ageing effect of energy storage machine automatically, and charge and discharge can't carry out nimble switching, and ageing total duration is longer, aims at above-mentioned problem, and what need effective technical solution is urgent at present.
Disclosure of Invention
An embodiment of the application aims to provide a photovoltaic energy storage battery aging test method, a photovoltaic energy storage battery aging test system and a photovoltaic energy storage battery aging test medium, wherein uninterrupted test of an energy storage motor is realized through dynamic switching of a charger and a discharge machine, and the aging test efficiency of the energy storage motor is improved.
The embodiment of the application also provides a photovoltaic energy storage battery aging test method, which comprises the following steps:
Connecting energy storage batteries of the two energy storage machines, and performing ageing role competition to obtain competition results;
if the competition result is successful, setting a corresponding energy storage machine as a charger,
if the competition result fails, setting a corresponding energy storage machine as an electric discharge machine;
acquiring parameter information of a charger, setting charging parameters according to the parameter information of the charger, charging the charger according to the charging parameters, and acquiring state information of the charger in real time;
if the state information of the charger meets the charging requirement, switching the charger into a discharging machine;
acquiring parameter information of a discharge machine, setting discharge parameters according to the parameter information of the discharge machine, continuously discharging the discharge machine according to the discharge parameters, and acquiring state information of the discharge machine in real time;
if the state information of the discharging machine meets the requirement, switching the discharging machine into a charger;
and continuously testing the energy storage battery according to the state switching of the charger and the discharge machine to obtain an aging result, and transmitting the aging result of the energy storage motor to the terminal in real time.
Optionally, in the method for aging test of a photovoltaic energy storage battery according to the embodiment of the present application, the energy storage batteries of the two energy storage machines are connected, and an aging role competition is performed, so as to obtain a competition result, which specifically includes:
Acquiring direct current electric energy information of an energy storage battery, connecting the energy storage battery of one of the energy storage machines with a first inverter, and obtaining first inversion information according to the first inverter;
connecting an energy storage motor of the other energy storage machine with a second inverter, and obtaining second inversion information according to the second inverter;
the first inversion information and the second inversion information are in communication connection, and the first communication rate information and the second communication rate information are obtained respectively;
comparing the first communication rate information with the second communication rate information;
if the first communication rate information is larger than the second communication rate information, setting an energy storage machine connected with the first inverter as a charger, and obtaining a first setting result;
if the first communication rate information is smaller than the second communication rate information, setting an energy storage machine connected with the second inverter as a discharging machine, and obtaining a second setting result;
and obtaining a competition result of the energy storage machine according to the first setting result and the second setting result.
Optionally, in the photovoltaic energy storage battery aging test method described in the embodiment of the present application, the charger parameter information is obtained, the charging parameter is set according to the charger parameter information, the charger is charged according to the charging parameter, and the state information of the charger is obtained in real time, specifically:
Acquiring parameter information of a charger, wherein the parameter information of the charger comprises rated current, rated voltage and rated power of the charger;
setting charging voltage, charging current and charging power according to the parameter information of the charger;
charging the charger according to the set charging voltage, charging current and charging power, and recording charging time in real time;
when the charging time meets the preset charging time, acquiring the capacity information of the charger;
comparing the capacity information of the charger with preset capacity information to obtain the capacity deviation rate of the energy storage battery of the charger;
judging whether the capacity deviation rate of the energy storage motor of the charger is larger than or equal to a first capacity deviation rate threshold value or not;
if the voltage is greater than or equal to the voltage, stopping charging, and switching the aging role of the charger;
and if the charging parameters are smaller than the preset charging parameters, the charging parameters are adjusted, and the capacity of the energy storage battery of the charger is obtained in real time.
Optionally, in the photovoltaic energy storage battery aging test method according to the embodiment of the present application, if the photovoltaic energy storage battery aging test method is smaller than the photovoltaic energy storage battery aging test method, after adjusting the charging parameter and acquiring the capacity of the energy storage battery of the charger in real time, the method further includes:
acquiring charging parameters of a charger, and acquiring charging voltage of an energy storage battery according to the charging parameters of the charger;
Judging whether the charging voltage of the energy storage battery meets the requirement;
if the requirement is met, charging current information of the charger is obtained in real time;
calculating charging current fluctuation information according to charging current information of a charger, generating compensation information according to the charging current fluctuation information, and dynamically compensating charging parameters according to the compensation information;
if the requirement is not met, generating correction information, and adjusting the charging time of the charger according to the correction information.
Optionally, in the photovoltaic energy storage battery aging test method according to the embodiment of the present application, discharge machine parameter information is obtained, a discharge parameter is set according to the discharge machine parameter information, continuous discharge is performed on the discharge machine according to the discharge parameter, and discharge machine state information is obtained in real time, specifically:
the method comprises the steps of obtaining parameter information of a discharge machine, setting discharge parameters according to the parameter information of the discharge machine, discharging the discharge machine according to the discharge parameters, and obtaining state information of the discharge machine in real time, wherein the specific steps are as follows:
acquiring parameter information of a discharge machine, wherein the parameter information of the discharge machine comprises rated current, rated voltage and rated power of the discharge machine;
setting discharge voltage, discharge current and discharge power according to the parameter information of the discharge machine;
performing discharge test on the discharge machine according to the set discharge voltage, the set discharge current and the set discharge power, and recording the discharge time in real time;
When the discharge time meets the preset discharge time, acquiring the electric quantity information of the battery of the discharge machine;
comparing the electric quantity information of the electric discharge machine with preset electric quantity information to obtain residual electric quantity information;
if the residual electric quantity information is smaller than or equal to the preset residual electric quantity, stopping discharging, and switching the aging roles of the discharging machine;
and if the residual electric quantity information is larger than the preset residual electric quantity, acquiring the discharge state of the discharge machine in real time.
Optionally, in the photovoltaic energy storage battery aging test method according to the embodiment of the present application, if the remaining capacity information is greater than a preset remaining capacity, after obtaining the discharge state of the discharge machine in real time, the method further includes:
acquiring a discharge state of the discharge machine, and acquiring discharge power of the discharge machine in real time according to the discharge state of the discharge machine;
comparing the discharge power of the discharge machine with preset power to obtain a power deviation rate;
judging whether the power deviation rate is larger than or equal to a preset power deviation rate threshold value;
if the discharge power is greater than or equal to the discharge power, adjusting the discharge voltage and the discharge time according to the discharge power of the discharge machine;
and if the residual electric quantity is smaller than the preset value, acquiring the residual electric quantity of the electric machine, and predicting the residual discharge time of the electric machine according to the residual electric quantity of the electric machine.
In a second aspect, embodiments of the present application provide a photovoltaic energy storage battery aging test system, the system including: the photovoltaic energy storage battery aging test system comprises a memory and a processor, wherein the memory comprises a program of a photovoltaic energy storage battery aging test method, and the program of the photovoltaic energy storage battery aging test method realizes the following steps when being executed by the processor:
connecting energy storage batteries of the two energy storage machines, and performing ageing role competition to obtain competition results;
if the competition result is successful, setting a corresponding energy storage machine as a charger,
if the competition result fails, setting a corresponding energy storage machine as an electric discharge machine;
acquiring parameter information of a charger, setting charging parameters according to the parameter information of the charger, charging the charger according to the charging parameters, and acquiring state information of the charger in real time;
if the state information of the charger meets the charging requirement, switching the charger into a discharging machine;
acquiring parameter information of a discharge machine, setting discharge parameters according to the parameter information of the discharge machine, continuously discharging the discharge machine according to the discharge parameters, and acquiring state information of the discharge machine in real time;
if the state information of the discharging machine meets the requirement, switching the discharging machine into a charger;
And continuously testing the energy storage battery according to the state switching of the charger and the discharge machine to obtain an aging result, and transmitting the aging result of the energy storage motor to the terminal in real time.
Optionally, in the photovoltaic energy storage battery aging test system described in the embodiment of the present application, the energy storage batteries of the two energy storage machines are connected, and an aging role competition is performed, so as to obtain a competition result, which specifically is:
acquiring direct current electric energy information of an energy storage battery, connecting the energy storage battery of one of the energy storage machines with a first inverter, and obtaining first inversion information according to the first inverter;
connecting an energy storage motor of the other energy storage machine with a second inverter, and obtaining second inversion information according to the second inverter;
the first inversion information and the second inversion information are in communication connection, and the first communication rate information and the second communication rate information are obtained respectively;
comparing the first communication rate information with the second communication rate information;
if the first communication rate information is larger than the second communication rate information, setting an energy storage machine connected with the first inverter as a charger, and obtaining a first setting result;
if the first communication rate information is smaller than the second communication rate information, setting an energy storage machine connected with the second inverter as a discharging machine, and obtaining a second setting result;
And obtaining a competition result of the energy storage machine according to the first setting result and the second setting result.
Optionally, in the photovoltaic energy storage battery aging test system according to the embodiment of the present application, the charger parameter information is obtained, the charging parameter is set according to the charger parameter information, the charger is charged according to the charging parameter, and the state information of the charger is obtained in real time, specifically:
acquiring parameter information of a charger, wherein the parameter information of the charger comprises rated current, rated voltage and rated power of the charger;
setting charging voltage, charging current and charging power according to the parameter information of the charger;
charging the charger according to the set charging voltage, charging current and charging power, and recording charging time in real time;
when the charging time meets the preset charging time, acquiring the capacity information of the charger;
comparing the capacity information of the charger with preset capacity information to obtain the capacity deviation rate of the energy storage battery of the charger;
judging whether the capacity deviation rate of the energy storage motor of the charger is larger than or equal to a first capacity deviation rate threshold value or not;
if the voltage is greater than or equal to the voltage, stopping charging, and switching the aging role of the charger;
And if the charging parameters are smaller than the preset charging parameters, the charging parameters are adjusted, and the capacity of the energy storage battery of the charger is obtained in real time.
In a third aspect, an embodiment of the present application further provides a computer readable storage medium, where the computer readable storage medium includes a photovoltaic energy storage battery aging test method program, where the photovoltaic energy storage battery aging test method program, when executed by a processor, implements the steps of the foregoing photovoltaic energy storage battery aging test method.
As can be seen from the above, according to the photovoltaic energy storage battery aging test method, system and medium provided by the embodiments of the present application, the energy storage batteries of two energy storage machines are connected, and aging role competition is performed, so as to obtain competition results; if the competition result is successful, setting a corresponding energy storage machine as a charger, and if the competition result is failed, setting a corresponding energy storage machine as a discharge machine; acquiring parameter information of a charger, setting charging parameters according to the parameter information of the charger, charging the charger according to the charging parameters, and acquiring state information of the charger in real time; if the state information of the charger meets the charging requirement, switching the charger into a discharging machine; acquiring parameter information of a discharge machine, setting discharge parameters according to the parameter information of the discharge machine, continuously discharging the discharge machine according to the discharge parameters, and acquiring state information of the discharge machine in real time; if the state information of the discharging machine meets the requirement, switching the discharging machine into a charger; and continuously testing the energy storage battery according to the state switching of the charger and the discharge machine, so as to obtain an aging result, transmitting the aging result of the energy storage motor to the terminal in real time, realizing uninterrupted test of the energy storage motor through the dynamic switching of the charger and the discharge machine, and improving the aging test efficiency of the energy storage motor.
Additional features and advantages of the application will be set forth in the description which follows, and in part will be realized and attained by the structure particularly pointed out in the written description and claims hereof, as well as the appended drawings.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a flowchart of a photovoltaic energy storage battery aging test method provided in an embodiment of the present application;
fig. 2 is a flow chart of analysis of competition results of energy storage machines in the photovoltaic energy storage battery aging test method according to the embodiment of the present application;
fig. 3 is a flow chart of calculation of the capacity of the energy storage battery according to the photovoltaic energy storage battery aging test method provided in the embodiment of the present application;
fig. 4 is a schematic structural diagram of a photovoltaic energy storage battery aging test system according to an embodiment of the present application.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. The components of the embodiments of the present application, which are generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, as provided in the accompanying drawings, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, are intended to be within the scope of the present application.
It should be noted that like reference numerals and letters refer to like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures. Meanwhile, in the description of the present application, the terms "first", "second", and the like are used only to distinguish the description, and are not to be construed as indicating or implying relative importance.
Referring to fig. 1, fig. 1 is a flowchart of a photovoltaic energy storage battery aging test method according to some embodiments of the present application. The photovoltaic energy storage battery aging test method is used in terminal equipment and comprises the following steps of:
s101, connecting energy storage batteries of two energy storage machines, and performing ageing role competition to obtain competition results;
s102, if the competition result is successful, setting a corresponding energy storage machine as a charger, and if the competition result is failed, setting a corresponding energy storage machine as a discharge machine;
s103, acquiring parameter information of a charger, setting charging parameters according to the parameter information of the charger, charging the charger according to the charging parameters, and acquiring state information of the charger in real time; if the state information of the charger meets the charging requirement, switching the charger into a discharging machine;
s104, acquiring parameter information of a discharge machine, setting discharge parameters according to the parameter information of the discharge machine, continuously discharging the discharge machine according to the discharge parameters, and acquiring state information of the discharge machine in real time; if the state information of the discharging machine meets the requirement, switching the discharging machine into a charger;
and S105, continuously testing the energy storage battery according to the state switching of the charger and the discharge machine, obtaining an aging result, and transmitting the aging result of the energy storage motor to the terminal in real time.
It should be noted that, two energy storage machines are subjected to aging role competition, one energy storage machine is set as a charger, the other energy storage machine is set as a discharge machine, role switching is performed according to working states of the charger and the discharge machine, uninterrupted aging test of the energy storage machines is achieved, and aging test precision is improved.
Referring to fig. 2, fig. 2 is a flow chart of analysis of competing results of an energy storage machine according to a photovoltaic energy storage battery aging test method according to some embodiments of the present application. According to the embodiment of the invention, the energy storage batteries of the two energy storage machines are connected, and ageing role competition is carried out to obtain competition results, specifically:
s201, acquiring direct current electric energy information of an energy storage battery, connecting the energy storage battery of one energy storage machine with a first inverter, obtaining first inversion information according to the first inverter, connecting the energy storage motor of the other energy storage machine with a second inverter, and obtaining second inversion information according to the second inverter;
s202, the first inversion information and the second inversion information are in communication connection, the first communication rate information and the second communication rate information are obtained respectively, and the first communication rate information and the second communication rate information are compared;
s203, if the first communication rate information is greater than the second communication rate information, setting an energy storage machine connected with the first inverter as a charger, and obtaining a first setting result;
S204, if the first communication rate information is smaller than the second communication rate information, setting an energy storage machine connected with the second inverter as a discharging machine, and obtaining a second setting result;
s205, obtaining the competition result of the energy storage machine according to the first setting result and the second setting result.
It should be noted that, according to different communication rates, the two energy storage machines are connected in a communication mode, the energy storage machine which is connected successfully is set as a charger for charging test, and the later connected energy storage machine is set as a discharging machine for discharging test, so that role switching is performed on the two energy storage machines rapidly, and rapid role switching of the energy storage machines is achieved.
Referring to fig. 3, fig. 3 is a flow chart illustrating an energy storage battery capacity calculation method according to some embodiments of the present application. According to the embodiment of the invention, the parameter information of the charger is obtained, the charging parameters are set according to the parameter information of the charger, the charger is charged according to the charging parameters, and the state information of the charger is obtained in real time, specifically:
s301, acquiring parameter information of a charger, wherein the parameter information of the charger comprises rated current, rated voltage and rated power of the charger;
s302, setting charging voltage, charging current and charging power according to the parameter information of the charger, performing charging test on the charger according to the set charging voltage, charging current and charging power, and recording charging time in real time;
S303, when the charging time meets the preset charging time, acquiring the capacity information of the charger, and comparing the capacity information of the charger with the preset capacity information to obtain the capacity deviation rate of the energy storage battery of the charger;
s304, judging whether the capacity deviation rate of the energy storage motor of the charger is larger than or equal to a first capacity deviation rate threshold value;
s305, if the voltage is greater than or equal to the voltage, stopping charging, and switching the aging role of the charger; and if the charging parameters are smaller than the preset charging parameters, the charging parameters are adjusted, and the capacity of the energy storage battery of the charger is obtained in real time.
It should be noted that, in the process of testing the charger, the charging time of the full charge of the charger and the capacity of the charger are accurately analyzed by judging the capacity of the charger in real time, and the capacity of the stored electric quantity of the charger is reduced along with the extension of the aging time, so that the aging rate of the charger is accurately analyzed, the aging state of the charger is judged according to the aging rate, and the accurate aging test of the energy storage battery is realized.
According to the embodiment of the invention, if the charging parameter is smaller than the preset threshold value, the charging parameter is adjusted, and the capacity of the energy storage battery of the charger is obtained in real time, and then the method further comprises the following steps:
acquiring charging parameters of a charger, and acquiring charging voltage of an energy storage battery according to the charging parameters of the charger;
Judging whether the charging voltage of the energy storage battery meets the requirement;
if the requirement is met, charging current information of the charger is obtained in real time;
calculating charging current fluctuation information according to charging current information of a charger, generating compensation information according to the charging current fluctuation information, and dynamically compensating charging parameters according to the compensation information;
if the requirement is not met, generating correction information, and adjusting the charging time of the charger according to the correction information.
It should be noted that, in the charging process of the charger, whether the charging voltage meets the requirement is judged, and in the testing process, fluctuation of the charging current of the charger is analyzed in real time, and the charging parameters are dynamically compensated, so that the charging parameters can meet the charging requirement.
According to the embodiment of the invention, the parameter information of the discharge machine is obtained, the discharge parameter is set according to the parameter information of the discharge machine, the discharge machine is continuously discharged according to the discharge parameter, and the state information of the discharge machine is obtained in real time, specifically:
the method comprises the steps of obtaining parameter information of a discharge machine, setting discharge parameters according to the parameter information of the discharge machine, discharging the discharge machine according to the discharge parameters, and obtaining state information of the discharge machine in real time, wherein the specific steps are as follows:
acquiring parameter information of a discharge machine, wherein the parameter information of the discharge machine comprises rated current, rated voltage and rated power of the discharge machine;
Setting discharge voltage, discharge current and discharge power according to the parameter information of the discharge machine;
performing discharge test on the discharge machine according to the set discharge voltage, the set discharge current and the set discharge power, and recording the discharge time in real time;
when the discharge time meets the preset discharge time, acquiring the electric quantity information of the battery of the discharge machine;
comparing the electric quantity information of the electric discharge machine with preset electric quantity information to obtain residual electric quantity information;
if the residual electric quantity information is smaller than or equal to the preset residual electric quantity, stopping discharging, and switching the aging roles of the discharging machine;
and if the residual electric quantity information is larger than the preset residual electric quantity, acquiring the discharge state of the discharge machine in real time.
In the discharging test process of the discharging machine, the electric quantity of the energy storage motor is analyzed in real time to rapidly realize the switching of the aging roles, so that the role switching time is shortened, and the efficiency of the aging test is improved.
According to the embodiment of the invention, if the remaining capacity information is greater than the preset remaining capacity, after the discharge state of the discharge machine is obtained in real time, the method further comprises the steps of:
acquiring a discharge state of the discharge machine, and acquiring discharge power of the discharge machine in real time according to the discharge state of the discharge machine;
Comparing the discharge power of the discharge machine with preset power to obtain a power deviation rate;
judging whether the power deviation rate is larger than or equal to a preset power deviation rate threshold value or not;
if the discharge power is greater than or equal to the discharge power, adjusting the discharge voltage and the discharge time according to the discharge power of the discharge machine;
and if the residual electric quantity is smaller than the preset value, acquiring the residual electric quantity of the electric machine, and predicting the residual discharge time of the electric machine according to the residual electric quantity of the electric machine.
In the discharging process, whether the current discharging power meets the requirement is accurately analyzed by analyzing the discharging state in real time, so that the discharging voltage and the discharging time are dynamically adjusted according to the analysis result, and the aging test time can be shortened.
According to an embodiment of the present invention, further comprising:
acquiring charge test state information and discharge test state information;
analyzing the aging state of the energy storage battery according to the charge test state information and the discharge test state information;
analyzing service life attenuation information of the energy storage battery according to the aging state;
comparing the life attenuation information with preset life information to obtain life attenuation rate;
if the life attenuation rate is larger than a preset attenuation threshold value, judging that the energy storage battery is aged too fast;
If the energy storage battery is smaller than the normal operating requirement, the energy storage battery is judged to be capable of meeting the normal operating requirement.
It should be noted that, the influence of the charging process or the discharging process on the aging of the energy storage motor is judged in real time by analyzing the attenuation characteristic of the energy storage battery, so that the utilization rate of the energy storage battery can be accurately analyzed, and the energy storage battery can be maximally utilized.
Referring to fig. 4, fig. 4 is a schematic structural diagram of a photovoltaic energy storage battery aging test system according to some embodiments of the present application. In a second aspect, embodiments of the present application provide a photovoltaic energy storage battery aging test system 4, the system comprising: the memory 41 and the processor 42, the memory 41 includes a program of the photovoltaic energy storage battery aging test method, and when the program of the photovoltaic energy storage battery aging test method is executed by the processor, the following steps are implemented:
connecting energy storage batteries of the two energy storage machines, and performing ageing role competition to obtain competition results;
if the competition result is successful, setting a corresponding energy storage machine as a charger,
if the competition result fails, setting a corresponding energy storage machine as an electric discharge machine;
acquiring parameter information of a charger, setting charging parameters according to the parameter information of the charger, charging the charger according to the charging parameters, and acquiring state information of the charger in real time;
If the state information of the charger meets the charging requirement, switching the charger into a discharging machine;
acquiring parameter information of a discharge machine, setting discharge parameters according to the parameter information of the discharge machine, continuously discharging the discharge machine according to the discharge parameters, and acquiring state information of the discharge machine in real time;
if the state information of the discharging machine meets the requirement, switching the discharging machine into a charger;
and continuously testing the energy storage battery according to the state switching of the charger and the discharge machine to obtain an aging result, and transmitting the aging result of the energy storage motor to the terminal in real time.
It should be noted that, two energy storage machines are subjected to aging role competition, one energy storage machine is set as a charger, the other energy storage machine is set as a discharge machine, role switching is performed according to working states of the charger and the discharge machine, uninterrupted aging test of the energy storage machines is achieved, and aging test precision is improved.
According to the embodiment of the invention, the energy storage batteries of the two energy storage machines are connected, and ageing role competition is carried out to obtain competition results, specifically:
acquiring direct current electric energy information of an energy storage battery, connecting the energy storage battery of one of the energy storage machines with a first inverter, and obtaining first inversion information according to the first inverter;
Connecting an energy storage motor of the other energy storage machine with a second inverter, and obtaining second inversion information according to the second inverter;
the first inversion information and the second inversion information are in communication connection, and the first communication rate information and the second communication rate information are obtained respectively;
comparing the first communication rate information with the second communication rate information;
if the first communication rate information is larger than the second communication rate information, setting an energy storage machine connected with the first inverter as a charger, and obtaining a first setting result;
if the first communication rate information is smaller than the second communication rate information, setting an energy storage machine connected with the second inverter as a discharging machine, and obtaining a second setting result;
and obtaining a competition result of the energy storage machine according to the first setting result and the second setting result.
It should be noted that, according to different communication rates, the two energy storage machines are connected in a communication mode, the energy storage machine which is connected successfully is set as a charger for charging test, and the later connected energy storage machine is set as a discharging machine for discharging test, so that role switching is performed on the two energy storage machines rapidly, and rapid role switching of the energy storage machines is achieved.
According to the embodiment of the invention, the parameter information of the charger is obtained, the charging parameters are set according to the parameter information of the charger, the charger is charged according to the charging parameters, and the state information of the charger is obtained in real time, specifically:
Acquiring parameter information of a charger, wherein the parameter information of the charger comprises rated current, rated voltage and rated power of the charger;
setting charging voltage, charging current and charging power according to the parameter information of the charger;
charging the charger according to the set charging voltage, charging current and charging power, and recording charging time in real time;
when the charging time meets the preset charging time, acquiring the capacity information of the charger;
comparing the capacity information of the charger with preset capacity information to obtain the capacity deviation rate of the energy storage battery of the charger;
judging whether the capacity deviation rate of the energy storage motor of the charger is larger than or equal to a first capacity deviation rate threshold value;
if the voltage is greater than or equal to the voltage, stopping charging, and switching the aging role of the charger;
and if the charging parameters are smaller than the preset charging parameters, the charging parameters are adjusted, and the capacity of the energy storage battery of the charger is obtained in real time.
It should be noted that, in the process of testing the charger, the charging time of the full charge of the charger and the capacity of the charger are accurately analyzed by judging the capacity of the charger in real time, and the capacity of the stored electric quantity of the charger is reduced along with the extension of the aging time, so that the aging rate of the charger is accurately analyzed, the aging state of the charger is judged according to the aging rate, and the accurate aging test of the energy storage battery is realized.
According to the embodiment of the invention, if the charging parameter is smaller than the preset threshold value, the charging parameter is adjusted, and the capacity of the energy storage battery of the charger is obtained in real time, and then the method further comprises the following steps:
acquiring charging parameters of a charger, and acquiring charging voltage of an energy storage battery according to the charging parameters of the charger;
judging whether the charging voltage of the energy storage battery meets the requirement;
if the requirement is met, charging current information of the charger is obtained in real time;
calculating charging current fluctuation information according to charging current information of a charger, generating compensation information according to the charging current fluctuation information, and dynamically compensating charging parameters according to the compensation information;
if the requirement is not met, generating correction information, and adjusting the charging time of the charger according to the correction information.
It should be noted that, in the charging process of the charger, whether the charging voltage meets the requirement is judged, and in the testing process, fluctuation of the charging current of the charger is analyzed in real time, and the charging parameters are dynamically compensated, so that the charging parameters can meet the charging requirement.
According to the embodiment of the invention, the parameter information of the discharge machine is obtained, the discharge parameter is set according to the parameter information of the discharge machine, the discharge machine is continuously discharged according to the discharge parameter, and the state information of the discharge machine is obtained in real time, specifically:
The method comprises the steps of obtaining parameter information of a discharge machine, setting discharge parameters according to the parameter information of the discharge machine, discharging the discharge machine according to the discharge parameters, and obtaining state information of the discharge machine in real time, wherein the specific steps are as follows:
acquiring parameter information of a discharge machine, wherein the parameter information of the discharge machine comprises rated current, rated voltage and rated power of the discharge machine;
setting discharge voltage, discharge current and discharge power according to the parameter information of the discharge machine;
performing discharge test on the discharge machine according to the set discharge voltage, the set discharge current and the set discharge power, and recording the discharge time in real time;
when the discharge time meets the preset discharge time, acquiring the electric quantity information of the battery of the discharge machine;
comparing the electric quantity information of the electric discharge machine with preset electric quantity information to obtain residual electric quantity information;
if the residual electric quantity information is smaller than or equal to the preset residual electric quantity, stopping discharging, and switching the aging roles of the discharging machine;
and if the residual electric quantity information is larger than the preset residual electric quantity, acquiring the discharge state of the discharge machine in real time.
In the discharging test process of the discharging machine, the electric quantity of the energy storage motor is analyzed in real time to rapidly realize the switching of the aging roles, so that the role switching time is shortened, and the efficiency of the aging test is improved.
According to the embodiment of the invention, if the remaining capacity information is greater than the preset remaining capacity, after the discharge state of the discharge machine is obtained in real time, the method further comprises the steps of:
acquiring a discharge state of the discharge machine, and acquiring discharge power of the discharge machine in real time according to the discharge state of the discharge machine;
comparing the discharge power of the discharge machine with preset power to obtain a power deviation rate;
judging whether the power deviation rate is larger than or equal to a preset power deviation rate threshold value or not;
if the discharge power is greater than or equal to the discharge power, adjusting the discharge voltage and the discharge time according to the discharge power of the discharge machine;
and if the residual electric quantity is smaller than the preset value, acquiring the residual electric quantity of the electric machine, and predicting the residual discharge time of the electric machine according to the residual electric quantity of the electric machine.
In the discharging process, whether the current discharging power meets the requirement is accurately analyzed by analyzing the discharging state in real time, so that the discharging voltage and the discharging time are dynamically adjusted according to the analysis result, and the aging test time can be shortened.
According to an embodiment of the present invention, further comprising:
acquiring charge test state information and discharge test state information;
analyzing the aging state of the energy storage battery according to the charge test state information and the discharge test state information;
Analyzing service life attenuation information of the energy storage battery according to the aging state;
comparing the life attenuation information with preset life information to obtain life attenuation rate;
if the life attenuation rate is larger than a preset attenuation threshold value, judging that the energy storage battery is aged too fast;
if the energy storage battery is smaller than the normal operating requirement, the energy storage battery is judged to be capable of meeting the normal operating requirement.
It should be noted that, the influence of the charging process or the discharging process on the aging of the energy storage motor is judged in real time by analyzing the attenuation characteristic of the energy storage battery, so that the utilization rate of the energy storage battery can be accurately analyzed, and the energy storage battery can be maximally utilized.
A third aspect of the present invention provides a computer readable storage medium, the readable storage medium including a photovoltaic energy storage battery burn-in test method program, which when executed by a processor, implements the steps of the aforementioned method.
According to the photovoltaic energy storage battery aging test method, system and medium disclosed by the invention, the energy storage batteries of two energy storage machines are connected, and aging role competition is carried out to obtain competition results; if the competition result is successful, setting a corresponding energy storage machine as a charger, and if the competition result is failed, setting a corresponding energy storage machine as a discharge machine; acquiring parameter information of a charger, setting charging parameters according to the parameter information of the charger, charging the charger according to the charging parameters, and acquiring state information of the charger in real time; if the state information of the charger meets the charging requirement, switching the charger into a discharging machine; acquiring parameter information of a discharge machine, setting discharge parameters according to the parameter information of the discharge machine, continuously discharging the discharge machine according to the discharge parameters, and acquiring state information of the discharge machine in real time; if the state information of the discharging machine meets the requirement, switching the discharging machine into a charger; and continuously testing the energy storage battery according to the state switching of the charger and the discharge machine, so as to obtain an aging result, transmitting the aging result of the energy storage motor to the terminal in real time, realizing uninterrupted test of the energy storage motor through the dynamic switching of the charger and the discharge machine, and improving the aging test efficiency of the energy storage motor.
In the several embodiments provided in this application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The above described device embodiments are only illustrative, e.g. the division of units is only one logical function division, and there may be other divisions in actual implementation, such as: multiple units or components may be combined or may be integrated into another system, or some features may be omitted, or not performed. In addition, the various components shown or discussed may be coupled or directly coupled or communicatively coupled to each other via some interface, whether indirectly coupled or communicatively coupled to devices or units, whether electrically, mechanically, or otherwise.
The units described above as separate components may or may not be physically separate, and components shown as units may or may not be physical units; can be located in one place or distributed to a plurality of network units; some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in each embodiment of the present invention may be integrated in one processing unit, or each unit may be separately used as one unit, or two or more units may be integrated in one unit; the integrated units may be implemented in hardware or in hardware plus software functional units.
Those of ordinary skill in the art will appreciate that: all or part of the steps for implementing the above method embodiments may be implemented by hardware related to program instructions, and the foregoing program may be stored in a readable storage medium, where the program, when executed, performs steps including the above method embodiments; and the aforementioned storage medium includes: a mobile storage device, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk or an optical disk, or the like, which can store program codes.
Alternatively, the above-described integrated units of the present invention may be stored in a readable storage medium if implemented in the form of software functional modules and sold or used as separate products. Based on such understanding, the technical solution of the embodiments of the present invention may be embodied in essence or a part contributing to the prior art in the form of a software product stored in a storage medium, including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the methods described in the embodiments of the present invention. And the aforementioned storage medium includes: a removable storage device, ROM, RAM, magnetic or optical disk, or other medium capable of storing program code.
Claims (8)
1. The photovoltaic energy storage battery aging test method is characterized by comprising the following steps of:
connecting energy storage batteries of the two energy storage machines, and performing ageing role competition to obtain competition results;
if the competition result is successful, setting a corresponding energy storage machine as a charger,
if the competition result fails, setting a corresponding energy storage machine as an electric discharge machine;
acquiring parameter information of a charger, setting charging parameters according to the parameter information of the charger, charging the charger according to the charging parameters, and acquiring state information of the charger in real time;
if the state information of the charger meets the charging requirement, switching the charger into a discharging machine;
acquiring parameter information of a discharge machine, setting discharge parameters according to the parameter information of the discharge machine, continuously discharging the discharge machine according to the discharge parameters, and acquiring state information of the discharge machine in real time;
if the state information of the discharging machine meets the requirement, switching the discharging machine into a charger;
continuously testing the energy storage battery according to the state switching of the charger and the discharge machine to obtain an aging result, and transmitting the aging result of the energy storage motor to the terminal in real time;
connecting energy storage batteries of the two energy storage machines, and performing aging role competition to obtain competition results, wherein the competition results are as follows:
Acquiring direct current electric energy information of an energy storage battery, connecting the energy storage battery of one of the energy storage machines with a first inverter, and obtaining first inversion information according to the first inverter;
connecting an energy storage motor of the other energy storage machine with a second inverter, and obtaining second inversion information according to the second inverter;
the first inversion information and the second inversion information are in communication connection, and the first communication rate information and the second communication rate information are obtained respectively;
comparing the first communication rate information with the second communication rate information;
if the first communication rate information is larger than the second communication rate information, setting an energy storage machine connected with the first inverter as a charger, and obtaining a first setting result;
if the first communication rate information is smaller than the second communication rate information, setting an energy storage machine connected with the second inverter as a discharging machine, and obtaining a second setting result;
and obtaining a competition result of the energy storage machine according to the first setting result and the second setting result.
2. The photovoltaic energy storage battery aging test method according to claim 1, wherein the method comprises the steps of obtaining parameter information of a charger, setting charging parameters according to the parameter information of the charger, charging the charger according to the charging parameters, and obtaining state information of the charger in real time, and specifically comprises the following steps:
Acquiring parameter information of a charger, wherein the parameter information of the charger comprises rated current, rated voltage and rated power of the charger;
setting charging voltage, charging current and charging power according to the parameter information of the charger;
charging the charger according to the set charging voltage, charging current and charging power, and recording charging time in real time;
when the charging time meets the preset charging time, acquiring the capacity information of the charger;
comparing the capacity information of the charger with preset capacity information to obtain the capacity deviation rate of the energy storage battery of the charger;
judging whether the capacity deviation rate of the energy storage motor of the charger is larger than or equal to a first capacity deviation rate threshold value or not;
if the voltage is greater than or equal to the voltage, stopping charging, and switching the aging role of the charger;
and if the charging parameters are smaller than the preset charging parameters, the charging parameters are adjusted, and the capacity of the energy storage battery of the charger is obtained in real time.
3. The method for testing the aging of the photovoltaic energy storage battery according to claim 2, wherein if the aging parameter is smaller than the predetermined threshold, the method further comprises the steps of:
acquiring charging parameters of a charger, and acquiring charging voltage of an energy storage battery according to the charging parameters of the charger;
Judging whether the charging voltage of the energy storage battery meets the requirement;
if the requirement is met, charging current information of the charger is obtained in real time;
calculating charging current fluctuation information according to charging current information of a charger, generating compensation information according to the charging current fluctuation information, and dynamically compensating charging parameters according to the compensation information;
if the requirement is not met, generating correction information, and adjusting the charging time of the charger according to the correction information.
4. The method for aging test of a photovoltaic energy storage battery according to claim 3, wherein the method comprises the steps of obtaining parameter information of a discharge machine, setting a discharge parameter according to the parameter information of the discharge machine, continuously discharging the discharge machine according to the discharge parameter, and obtaining state information of the discharge machine in real time, specifically:
the method comprises the steps of obtaining parameter information of a discharge machine, setting discharge parameters according to the parameter information of the discharge machine, discharging the discharge machine according to the discharge parameters, and obtaining state information of the discharge machine in real time, wherein the specific steps are as follows:
acquiring parameter information of a discharge machine, wherein the parameter information of the discharge machine comprises rated current, rated voltage and rated power of the discharge machine;
setting discharge voltage, discharge current and discharge power according to the parameter information of the discharge machine;
Performing discharge test on the discharge machine according to the set discharge voltage, the set discharge current and the set discharge power, and recording the discharge time in real time;
when the discharge time meets the preset discharge time, acquiring the electric quantity information of the battery of the discharge machine;
comparing the electric quantity information of the electric discharge machine with preset electric quantity information to obtain residual electric quantity information;
if the residual electric quantity information is smaller than or equal to the preset residual electric quantity, stopping discharging, and switching the aging roles of the discharging machine;
and if the residual electric quantity information is larger than the preset residual electric quantity, acquiring the discharge state of the discharge machine in real time.
5. The method for testing the aging of the photovoltaic energy storage battery according to claim 4, wherein if the remaining capacity information is greater than the preset remaining capacity, after obtaining the discharge state of the discharge machine in real time, further comprising:
acquiring a discharge state of the discharge machine, and acquiring discharge power of the discharge machine in real time according to the discharge state of the discharge machine;
comparing the discharge power of the discharge machine with preset power to obtain a power deviation rate;
judging whether the power deviation rate is larger than or equal to a preset power deviation rate threshold value;
if the discharge power is greater than or equal to the discharge power, adjusting the discharge voltage and the discharge time according to the discharge power of the discharge machine;
And if the residual electric quantity is smaller than the preset value, acquiring the residual electric quantity of the electric machine, and predicting the residual discharge time of the electric machine according to the residual electric quantity of the electric machine.
6. A photovoltaic energy storage cell aging test system, the system comprising: the photovoltaic energy storage battery aging test system comprises a memory and a processor, wherein the memory comprises a program of a photovoltaic energy storage battery aging test method, and the program of the photovoltaic energy storage battery aging test method realizes the following steps when being executed by the processor:
connecting energy storage batteries of the two energy storage machines, and performing ageing role competition to obtain competition results;
if the competition result is successful, setting a corresponding energy storage machine as a charger,
if the competition result fails, setting a corresponding energy storage machine as an electric discharge machine;
acquiring parameter information of a charger, setting charging parameters according to the parameter information of the charger, charging the charger according to the charging parameters, and acquiring state information of the charger in real time;
if the state information of the charger meets the charging requirement, switching the charger into a discharging machine;
acquiring parameter information of a discharge machine, setting discharge parameters according to the parameter information of the discharge machine, continuously discharging the discharge machine according to the discharge parameters, and acquiring state information of the discharge machine in real time;
If the state information of the discharging machine meets the requirement, switching the discharging machine into a charger;
continuously testing the energy storage battery according to the state switching of the charger and the discharge machine to obtain an aging result, and transmitting the aging result of the energy storage motor to the terminal in real time;
connecting energy storage batteries of the two energy storage machines, and performing aging role competition to obtain competition results, wherein the competition results are as follows:
acquiring direct current electric energy information of an energy storage battery, connecting the energy storage battery of one of the energy storage machines with a first inverter, and obtaining first inversion information according to the first inverter;
connecting an energy storage motor of the other energy storage machine with a second inverter, and obtaining second inversion information according to the second inverter;
the first inversion information and the second inversion information are in communication connection, and the first communication rate information and the second communication rate information are obtained respectively;
comparing the first communication rate information with the second communication rate information;
if the first communication rate information is larger than the second communication rate information, setting an energy storage machine connected with the first inverter as a charger, and obtaining a first setting result;
if the first communication rate information is smaller than the second communication rate information, setting an energy storage machine connected with the second inverter as a discharging machine, and obtaining a second setting result;
And obtaining a competition result of the energy storage machine according to the first setting result and the second setting result.
7. The photovoltaic energy storage battery aging test system according to claim 6, wherein the method comprises the steps of obtaining parameter information of a charger, setting charging parameters according to the parameter information of the charger, charging the charger according to the charging parameters, and obtaining state information of the charger in real time, and specifically comprises the following steps:
acquiring parameter information of a charger, wherein the parameter information of the charger comprises rated current, rated voltage and rated power of the charger;
setting charging voltage, charging current and charging power according to the parameter information of the charger;
charging the charger according to the set charging voltage, charging current and charging power, and recording charging time in real time;
when the charging time meets the preset charging time, acquiring the capacity information of the charger;
comparing the capacity information of the charger with preset capacity information to obtain the capacity deviation rate of the energy storage battery of the charger;
judging whether the capacity deviation rate of the energy storage motor of the charger is larger than or equal to a first capacity deviation rate threshold value or not;
if the voltage is greater than or equal to the voltage, stopping charging, and switching the aging role of the charger;
And if the charging parameters are smaller than the preset charging parameters, the charging parameters are adjusted, and the capacity of the energy storage battery of the charger is obtained in real time.
8. A computer readable storage medium, characterized in that the computer readable storage medium comprises a photovoltaic energy storage battery aging test method program, which when executed by a processor, implements the steps of the photovoltaic energy storage battery aging test method according to any one of claims 1 to 5.
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