CN117104074A - Method for controlling charge and discharge and charge and discharge control system - Google Patents
Method for controlling charge and discharge and charge and discharge control system Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
- B60L3/0046—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electric energy storage systems, e.g. batteries or capacitors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/16—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to battery ageing, e.g. to the number of charging cycles or the state of health [SoH]
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/10—Vehicle control parameters
- B60L2240/12—Speed
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/54—Drive Train control parameters related to batteries
- B60L2240/545—Temperature
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Abstract
The invention discloses a charge-discharge control method and a charge-discharge control system, which relate to the technical field of charge-discharge control.
Description
Technical Field
The invention relates to the technical field of charge and discharge control, in particular to a charge and discharge control method and a charge and discharge control system.
Background
The charge and discharge control technology is adopted, so that the health state of the battery can be better guaranteed, the utilization rate of battery energy can be better improved, the energy waste is reduced, the battery is protected from being influenced by abnormal states such as overcharging and overdischarging, the service life of the battery is prolonged, the occurrence of safety accidents is reduced, and the safety risk of the battery in the use process is effectively reduced.
The state of battery charge and discharge is judged mainly through the mode of artificial observation in the prior art, the control mode is shallow, the state parameters of the battery cannot be completely obtained, and then the health of the battery cannot be better maintained, so that certain battery resource waste is caused, and the safety state of the battery in use cannot be guaranteed, the risk brought by the battery in use is increased, certain benefit loss is caused to the storage battery, and the public praise of the storage battery is greatly reduced.
Disclosure of Invention
In view of the above-mentioned technical shortcomings, the present invention aims to provide a charge-discharge control method and a charge-discharge control system.
In order to solve the technical problems, the invention adopts the following technical scheme: the invention provides a charge and discharge control method, which comprises the following steps: step one, environmental information acquisition: acquiring environmental information of charging stations at all time points corresponding to the electric vehicle storage battery during charging, wherein the environmental information comprises environmental temperature and environmental humidity, and further analyzing and obtaining environmental influence coefficients corresponding to the electric vehicle storage battery;
step two, acquiring charging information: acquiring battery temperature, battery capacity and battery power consumption corresponding to the electric vehicle storage battery during charging, analyzing and obtaining a charging evaluation coefficient corresponding to the electric vehicle storage battery according to an environmental influence coefficient corresponding to the electric vehicle storage battery, and analyzing and obtaining charging current and charging voltage corresponding to the electric vehicle storage battery through the charging evaluation coefficient corresponding to the electric vehicle storage battery;
step three, time information analysis: acquiring a charging rate and a battery residual quantity corresponding to the electric vehicle storage battery during charging, analyzing and obtaining a duration evaluation coefficient corresponding to the electric vehicle storage battery according to a charging evaluation coefficient corresponding to the electric vehicle storage battery, and analyzing and obtaining a charging duration corresponding to the electric vehicle storage battery through the duration evaluation coefficient corresponding to the electric vehicle storage battery;
fourth, safety information analysis: acquiring charging current, charging voltage and battery temperature corresponding to each time point of the electric vehicle storage battery during charging, further analyzing to obtain a safety evaluation coefficient corresponding to the electric vehicle storage battery, and judging the safety state corresponding to the electric vehicle storage battery through the safety evaluation coefficient corresponding to the electric vehicle storage battery;
fifthly, acquiring discharge information: when riding, acquiring running information and battery information corresponding to the storage battery of the electric vehicle, wherein the running information comprises running speed, load force and running distance, and the battery information comprises battery temperature and loss;
step six, discharge information analysis: according to the running information corresponding to the electric vehicle storage battery, further analyzing to obtain a battery capacity demand coefficient corresponding to the electric vehicle storage battery, further analyzing to obtain a battery influence factor corresponding to the electric vehicle storage battery according to the battery information corresponding to the electric vehicle storage battery, comparing the battery capacity demand coefficient corresponding to the electric vehicle storage battery, and further calculating to obtain a reference running speed if the required capacity of the electric vehicle storage battery is insufficient;
step seven, early warning prompt: and when the safety corresponding to the storage battery of the electric vehicle is abnormal, early warning and prompting are carried out.
Preferably, the analysis obtains the environmental impact coefficient corresponding to the electric vehicle storage battery, and the specific analysis process is as follows: by calculation formulaAnalyzing and obtaining the environmental impact coefficient corresponding to the electric vehicle storage batteryI represents the number of each time point,，、respectively expressed as the set weighting factors of the ambient temperature and the ambient humidity,indicated as the set ambient temperature and,indicated as the set ambient humidity level,the ambient temperature expressed as the i-th point in time,the ambient humidity is expressed as the i-th time point.
Preferably, the analysis obtains a charging evaluation coefficient corresponding to the electric vehicle storage battery, and the specific analysis process is as follows: by calculation formulaAnalyzing to obtain a charging evaluation coefficient corresponding to the electric vehicle storage battery，、、Respectively expressed as weight factors of set battery temperature, battery capacity and battery power consumption,indicated as the set battery temperature,indicated as the set battery capacity,indicated as the set amount of battery power consumption,indicated as the corresponding battery temperature of the electric vehicle battery,indicated as the corresponding battery capacity of the electric vehicle battery,expressed as the corresponding battery power consumption of the electric vehicle storage battery,the environmental impact coefficient corresponding to the electric vehicle storage battery is expressed, and e is a natural constant.
Preferably, the analysis obtains the charging current and the charging voltage corresponding to the electric vehicle storage battery, and the specific analysis process is as follows: comparing the charging evaluation coefficient threshold value corresponding to the electric vehicle storage battery with each charging evaluation coefficient threshold value stored in the database, and if the charging evaluation coefficient threshold value corresponding to the electric vehicle storage battery is the same as a certain charging evaluation coefficient threshold value stored in the database, taking the charging current as the charging current corresponding to the electric vehicle storage battery, and obtaining the corresponding charging voltage in a comparison mode.
Preferably, the analyzing obtains a duration evaluation coefficient corresponding to the electric vehicle storage battery, and analyzes and obtains a corresponding charging duration, and the specific analyzing process is as follows: by calculation formulaAnalyzing to obtain a time length evaluation coefficient corresponding to the electric vehicle storage battery，、Weights respectively expressed as a set charge rate and a remaining battery powerThe factor(s) is (are) used,for the weighting factor of the charge evaluation coefficient,indicated as a set charge rate,indicated as a set remaining battery power amount,represented as the corresponding charge rate of the electric vehicle battery,represented as a corresponding charge rate of the electric vehicle battery corresponding to the electric vehicle battery,the charging evaluation coefficient is expressed as a charging evaluation coefficient corresponding to the storage battery of the electric vehicle;
comparing the time length evaluation coefficient threshold corresponding to the electric vehicle storage battery with each time length evaluation coefficient threshold stored in the database, and taking the charging time length as the charging time length corresponding to the electric vehicle storage battery if the time length evaluation coefficient threshold corresponding to the electric vehicle storage battery is the same as a certain time length evaluation coefficient threshold stored in the database.
Preferably, the analysis obtains a safety evaluation coefficient corresponding to the electric vehicle storage battery, and judges the safety state corresponding to the electric vehicle storage battery, and the specific analysis process is as follows: by calculation formulaAnalyzing to obtain a safety evaluation coefficient corresponding to the electric vehicle storage batteryI represents the number of each time point,，、、respectively representing the weight factors of charging current, charging voltage and battery temperature corresponding to the preset electric vehicle storage battery,represented by the preset charge current,indicated as a preset charging voltage,indicated as a preset battery temperature,denoted as the charging current corresponding to the electric vehicle battery at the i-th point in time,indicated as the charging voltage corresponding to the electric vehicle battery at the ith time point,the charging temperature corresponding to the electric vehicle storage battery at the ith time point is shown;
comparing the safety evaluation coefficient threshold value corresponding to the electric vehicle storage battery with the safety evaluation coefficient threshold value stored in the database, if the safety evaluation coefficient threshold value corresponding to the electric vehicle storage battery is smaller than the safety evaluation coefficient threshold value stored in the database, judging that the safety state corresponding to the electric vehicle storage battery is abnormal, carrying out early warning prompt, and if the safety evaluation coefficient threshold value corresponding to the electric vehicle storage battery is larger than or equal to the safety evaluation coefficient threshold value stored in the database, judging that the safety state corresponding to the electric vehicle storage battery is normal.
Preferably, the analysis obtains a battery capacity demand coefficient corresponding to the electric vehicle storage battery, and the specific analysis process is as followsThe following steps: by calculation formulaAnalyzing to obtain the battery capacity demand coefficient corresponding to the electric vehicle storage battery，、、Respectively expressed as weight factors of set running speed, load force and running distance,indicated as a set running speed,indicated as the set load force,indicated as a set travel distance for the vehicle,expressed as a corresponding running speed of the battery of the electric vehicle,represented as the corresponding load force of the electric vehicle battery,expressed as a corresponding travel distance of the electric vehicle battery, e represents a natural constant,the battery influence factors are expressed as battery corresponding to the electric vehicle storage battery;
comparing the battery capacity demand coefficient threshold value corresponding to the electric vehicle storage battery with the battery capacity demand coefficient threshold value corresponding to the electric vehicle storage battery stored in the database, and if the battery capacity demand coefficient threshold value corresponding to the electric vehicle storage battery is smaller than the battery capacity demand coefficient threshold value corresponding to the electric vehicle storage battery stored in the database, judging that the battery capacity corresponding to the electric vehicle storage battery is unqualified, otherwise, judging that the battery capacity corresponding to the electric vehicle storage battery is unqualified.
Preferably, the analysis obtains a battery influence factor corresponding to the electric vehicle storage battery, and the specific analysis process is as follows: by calculation formulaAnalyzing to obtain battery influence factors corresponding to the electric vehicle storage battery，、The weight factors are respectively expressed as a set battery temperature and a loss amount,indicated as the set battery temperature,represented as the set amount of loss,indicated as the corresponding battery temperature of the electric vehicle battery,expressed as the corresponding loss of the battery of the electric vehicle.
Preferably, the calculation results in a reference running speed, and the specific analysis process is as follows: the battery capacity is subtracted from the target required electric quantity to obtain a target required electric quantity difference, the target required electric quantity difference is further compared with reference running distances under each reference running speed corresponding to each target required electric quantity difference stored in a database to obtain reference running distances under each reference running speed corresponding to the target required electric quantity difference, the running distance corresponding to the electric vehicle storage battery is further compared with the reference running distances under each reference running speed corresponding to the target required electric quantity difference, and if the difference between the running distance corresponding to the electric vehicle and the reference running distance under a certain reference running speed corresponding to the target required electric quantity difference is minimum, the reference running speed is used as the reference running speed corresponding to the electric vehicle.
The present invention provides in a second aspect a charge-discharge control system comprising: the environment information acquisition module is used for acquiring the environment information of the charging station at each time point corresponding to the electric vehicle storage battery during charging, and further analyzing and obtaining the environment influence coefficient corresponding to the electric vehicle storage battery;
the charging information acquisition module is used for acquiring the battery temperature, the battery capacity and the battery power consumption corresponding to the electric vehicle storage battery during charging, analyzing and obtaining a charging evaluation coefficient corresponding to the electric vehicle storage battery according to the environmental influence coefficient corresponding to the electric vehicle storage battery, and analyzing and obtaining the charging current and the charging voltage corresponding to the electric vehicle storage battery through the charging evaluation coefficient corresponding to the electric vehicle storage battery;
the time information analysis module is used for acquiring the charging rate and the battery residual quantity corresponding to the electric vehicle storage battery during charging, further analyzing and obtaining a duration evaluation coefficient corresponding to the electric vehicle storage battery according to the charging evaluation coefficient corresponding to the electric vehicle storage battery, and analyzing and obtaining the charging duration corresponding to the electric vehicle storage battery through the duration evaluation coefficient corresponding to the electric vehicle storage battery;
the safety information analysis module is used for acquiring charging current, charging voltage and battery temperature corresponding to each time point of the electric vehicle storage battery during charging, further analyzing and obtaining a safety evaluation coefficient corresponding to the electric vehicle storage battery, and judging the safety state corresponding to the electric vehicle storage battery through the safety evaluation coefficient corresponding to the electric vehicle storage battery;
the discharging information acquisition module is used for acquiring running information and battery information corresponding to the electric vehicle storage battery during riding;
the discharging information analysis module is used for analyzing and obtaining a battery capacity demand coefficient corresponding to the electric vehicle storage battery according to the running information corresponding to the electric vehicle storage battery, analyzing and obtaining a battery influence factor corresponding to the electric vehicle storage battery according to the battery information corresponding to the electric vehicle storage battery, comparing the battery capacity demand coefficient corresponding to the electric vehicle storage battery, and calculating and obtaining a reference running speed if the required capacity of the electric vehicle storage battery is insufficient;
and the early warning terminal is used for early warning and prompting when the safety corresponding to the electric vehicle storage battery is abnormal.
Compared with the prior art, the invention has the beneficial effects that: the invention provides a charge-discharge control method and a charge-discharge control system, which are characterized in that firstly, environmental information is acquired, then, environmental assessment coefficients corresponding to an electric vehicle storage battery are obtained through analysis, charging current, charging voltage and charging duration corresponding to the electric vehicle storage battery are obtained through analysis, and meanwhile, safety assessment coefficients corresponding to the electric vehicle storage battery are obtained through analysis, so that the safety corresponding to the electric vehicle storage battery is judged, and the battery demand capacity corresponding to the electric vehicle storage battery is analyzed, so that the corresponding reference running speed of the electric vehicle storage battery is calculated, the safety application of the electric vehicle storage battery is better ensured, the defects in the prior art are overcome, the battery power quality and the power quality are better kept, the energy is effectively saved, the loss caused by unstable voltage in the charge-discharge control is reduced, the effective control of the charge-discharge process of the battery is realized, and the service life, the safety and the efficiency of the battery are improved.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of the steps of the method of the present invention.
FIG. 2 is a schematic diagram of the system structure of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, the present invention provides a method for controlling charge and discharge, comprising: step one, basic information acquisition: step one, environmental information acquisition: acquiring environmental information of charging stations at all time points corresponding to the electric vehicle storage battery during charging, wherein the environmental information comprises environmental temperature and environmental humidity, and further analyzing and obtaining environmental influence coefficients corresponding to the electric vehicle storage battery;
the temperature sensor is used for acquiring the environmental temperature of each time point corresponding to the electric vehicle storage battery, further calculating the environmental temperature to obtain the average temperature, and taking the average temperature as the environmental temperature corresponding to the electric vehicle storage battery, the humidity sensor is used for acquiring the environmental humidity of each time point corresponding to the electric vehicle storage battery, further calculating the average humidity, and taking the average temperature as the environmental humidity corresponding to the electric vehicle storage battery.
As an optional implementation manner, the analysis obtains the environmental impact coefficient corresponding to the electric vehicle storage battery, and the specific analysis process is as follows: by calculation formulaAnalyzing and obtaining the environmental impact coefficient corresponding to the electric vehicle storage batteryI represents the number of each time point,，、respectively expressed as the set weighting factors of the ambient temperature and the ambient humidity,indicated as the set ambient temperature and,indicated as the set ambient humidity level,the ambient temperature expressed as the i-th point in time,the ambient humidity is expressed as the i-th time point.
Step two, acquiring charging information: acquiring battery temperature, battery capacity and battery power consumption corresponding to the electric vehicle storage battery during charging, analyzing and obtaining a charging evaluation coefficient corresponding to the electric vehicle storage battery according to an environmental influence coefficient corresponding to the electric vehicle storage battery, and analyzing and obtaining charging current and charging voltage corresponding to the electric vehicle storage battery through the charging evaluation coefficient corresponding to the electric vehicle storage battery;
the temperature sensor is used for acquiring the battery temperature corresponding to the storage battery of the electric vehicle, the corresponding battery capacity can be acquired by checking the nameplate of the electric vehicle, and the battery rated capacity and the charging voltage corresponding to the storage battery of the electric vehicle are acquired and multiplied, so that the battery power consumption corresponding to the storage battery of the electric vehicle is acquired.
As an optional implementation manner, the analysis obtains a charging evaluation coefficient corresponding to the electric vehicle storage battery, and the specific analysis process is as follows: by calculation formulaAnalyzing to obtain a charging evaluation coefficient corresponding to the electric vehicle storage battery，、、Respectively expressed as weight factors of set battery temperature, battery capacity and battery power consumption,indicated as the set battery temperature,indicated as the set battery capacity,indicated as the set amount of battery power consumption,indicated as the corresponding battery temperature of the electric vehicle battery,indicated as the corresponding battery capacity of the electric vehicle battery,expressed as the corresponding battery power consumption of the electric vehicle storage battery,the environmental impact coefficient corresponding to the electric vehicle storage battery is expressed, and e is a natural constant.
As an optional implementation manner, the analysis obtains the charging current and the charging voltage corresponding to the electric vehicle storage battery, and the specific analysis process is as follows: comparing the charging evaluation coefficient threshold value corresponding to the electric vehicle storage battery with each charging evaluation coefficient threshold value stored in the database, and if the charging evaluation coefficient threshold value corresponding to the electric vehicle storage battery is the same as a certain charging evaluation coefficient threshold value stored in the database, taking the charging current as the charging current corresponding to the electric vehicle storage battery, and obtaining the corresponding charging voltage in a comparison mode.
Step three, time information analysis: acquiring a charging rate and a battery residual quantity corresponding to the electric vehicle storage battery during charging, analyzing and obtaining a duration evaluation coefficient corresponding to the electric vehicle storage battery according to a charging evaluation coefficient corresponding to the electric vehicle storage battery, and analyzing and obtaining a charging duration corresponding to the electric vehicle storage battery through the duration evaluation coefficient corresponding to the electric vehicle storage battery;
it should be noted that, obtain the charging rate that the electric motor car battery corresponds through the speed measuring instrument, obtain the battery residual capacity that the electric motor car battery corresponds through on the panel of riding of electric motor car.
As an optional implementation manner, the analyzing obtains a duration evaluation coefficient corresponding to the electric vehicle storage battery, and analyzes to obtain a corresponding charging duration, and the specific analyzing process is as follows: by calculation formulaAnalyzing to obtain a time length evaluation coefficient corresponding to the electric vehicle storage battery，、Respectively expressed as a set charge rate and a weight factor of the remaining battery power,for the weighting factor of the charge evaluation coefficient,indicated as a set charge rate,indicated as a set remaining battery power amount,represented as the corresponding charge rate of the electric vehicle battery,represented as a corresponding charge rate of the electric vehicle battery corresponding to the electric vehicle battery,the charging evaluation coefficient is expressed as a charging evaluation coefficient corresponding to the storage battery of the electric vehicle;
comparing the time length evaluation coefficient threshold corresponding to the electric vehicle storage battery with each time length evaluation coefficient threshold stored in the database, and taking the charging time length as the charging time length corresponding to the electric vehicle storage battery if the time length evaluation coefficient threshold corresponding to the electric vehicle storage battery is the same as a certain time length evaluation coefficient threshold stored in the database.
Fourth, safety information analysis: acquiring charging current, charging voltage and battery temperature corresponding to each time point of the electric vehicle storage battery during charging, further analyzing to obtain a safety evaluation coefficient corresponding to the electric vehicle storage battery, and judging the safety state corresponding to the electric vehicle storage battery through the safety evaluation coefficient corresponding to the electric vehicle storage battery;
the charging current, the charging voltage, and the battery temperature of each time point of the electric vehicle storage battery are obtained by the current sensor, the voltage sensor, and the temperature sensor, and are used as the charging current, the charging voltage, and the battery temperature of each time point of the electric vehicle storage battery.
As an optional implementation manner, the analysis obtains a safety evaluation coefficient corresponding to the electric vehicle storage battery, and judges a safety state corresponding to the electric vehicle storage battery, and the specific analysis process is as follows: by calculation formulaAnalyzing to obtain a safety evaluation coefficient corresponding to the electric vehicle storage batteryI represents the number of each time point,，、、respectively representing the weight factors of charging current, charging voltage and battery temperature corresponding to the preset electric vehicle storage battery,represented by the preset charge current,indicated as a preset charging voltage,indicated as a preset battery temperature,denoted as the charging current corresponding to the electric vehicle battery at the i-th point in time,indicated as the charging voltage corresponding to the electric vehicle battery at the ith time point,the charging temperature corresponding to the electric vehicle storage battery at the ith time point is shown;
comparing the safety evaluation coefficient threshold value corresponding to the electric vehicle storage battery with the safety evaluation coefficient threshold value stored in the database, if the safety evaluation coefficient threshold value corresponding to the electric vehicle storage battery is smaller than the safety evaluation coefficient threshold value stored in the database, judging that the safety state corresponding to the electric vehicle storage battery is abnormal, carrying out early warning prompt, and if the safety evaluation coefficient threshold value corresponding to the electric vehicle storage battery is larger than or equal to the safety evaluation coefficient threshold value stored in the database, judging that the safety state corresponding to the electric vehicle storage battery is normal.
Fifthly, acquiring discharge information: when riding, acquiring running information and battery information corresponding to the storage battery of the electric vehicle, wherein the running information comprises running speed, load force and running distance, and the battery information comprises battery temperature and loss;
the travel information is acquired on the air panel corresponding to the electric vehicle storage battery, the battery temperature is acquired through the temperature sensor, and the loss amount is acquired in the database.
Step six, discharge information analysis: according to the running information corresponding to the electric vehicle storage battery, further analyzing to obtain a battery capacity demand coefficient corresponding to the electric vehicle storage battery, further analyzing to obtain a battery influence factor corresponding to the electric vehicle storage battery according to the battery information corresponding to the electric vehicle storage battery, comparing the battery capacity demand coefficient corresponding to the electric vehicle storage battery, and further calculating to obtain a reference running speed if the required capacity of the electric vehicle storage battery is insufficient;
as an optional implementation manner, the analysis obtains a battery capacity demand coefficient corresponding to the electric vehicle storage battery, and the specific analysis process is as follows: by calculation formulaAnalyzing to obtain the battery capacity demand coefficient corresponding to the electric vehicle storage battery，、、Respectively expressed as weight factors of set running speed, load force and running distance,indicated as a set running speed,indicated as the set load force,indicated as a set travel distance for the vehicle,expressed as a corresponding running speed of the battery of the electric vehicle,represented as the corresponding load force of the electric vehicle battery,expressed as a corresponding travel distance of the electric vehicle battery, e represents a natural constant,the battery influence factors are expressed as battery corresponding to the electric vehicle storage battery;
comparing the battery capacity demand coefficient threshold value corresponding to the electric vehicle storage battery with the battery capacity demand coefficient threshold value corresponding to the electric vehicle storage battery stored in the database, and if the battery capacity demand coefficient threshold value corresponding to the electric vehicle storage battery is smaller than the battery capacity demand coefficient threshold value corresponding to the electric vehicle storage battery stored in the database, judging that the battery capacity corresponding to the electric vehicle storage battery is unqualified, otherwise, judging that the battery capacity corresponding to the electric vehicle storage battery is unqualified.
As an optional implementation manner, the analysis obtains the battery influence factor corresponding to the electric vehicle storage battery, and the specific analysis process is as follows: by calculation formulaAnalyzing to obtain battery influence factors corresponding to the electric vehicle storage battery，、The weight factors are respectively expressed as a set battery temperature and a loss amount,indicated as the set battery temperature,represented as the set amount of loss,indicated as the corresponding battery temperature of the electric vehicle battery,expressed as the corresponding loss of the battery of the electric vehicle.
As an alternative embodiment, the calculation results in a reference running speed, and the specific analysis process is as follows:
the battery capacity is subtracted from the target required electric quantity to obtain a target required electric quantity difference, the target required electric quantity difference is further compared with reference running distances under each reference running speed corresponding to each target required electric quantity difference stored in a database to obtain reference running distances under each reference running speed corresponding to the target required electric quantity difference, the running distance corresponding to the electric vehicle storage battery is further compared with the reference running distances under each reference running speed corresponding to the target required electric quantity difference, and if the difference between the running distance corresponding to the electric vehicle and the reference running distance under a certain reference running speed corresponding to the target required electric quantity difference is minimum, the reference running speed is used as the reference running speed corresponding to the electric vehicle.
Step seven, early warning prompt: and when the safety corresponding to the storage battery of the electric vehicle is abnormal, early warning and prompting are carried out.
Referring to fig. 2, a charge and discharge control system includes an environmental information acquisition module, a charge information acquisition module, a time information acquisition module, a safety information analysis module, a discharge information acquisition module, a discharge information analysis module, and an early warning terminal.
The environment information acquisition module is respectively connected with the charging information acquisition module and the time information acquisition module, the safety information analysis module is respectively connected with the charging information acquisition module and the time information acquisition module in a prompting mode, and the discharging information acquisition module is respectively connected with the discharging information analysis module and the early warning terminal.
The environment information acquisition module is used for acquiring the environment information of the charging station at each time point corresponding to the electric vehicle storage battery during charging, and further analyzing and obtaining the environment influence coefficient corresponding to the electric vehicle storage battery;
the charging information acquisition module is used for acquiring the battery temperature, the battery capacity and the battery power consumption corresponding to the electric vehicle storage battery during charging, analyzing and obtaining a charging evaluation coefficient corresponding to the electric vehicle storage battery according to the environmental influence coefficient corresponding to the electric vehicle storage battery, and analyzing and obtaining the charging current and the charging voltage corresponding to the electric vehicle storage battery through the charging evaluation coefficient corresponding to the electric vehicle storage battery;
the time information analysis module is used for acquiring the charging rate and the battery residual quantity corresponding to the electric vehicle storage battery during charging, further analyzing and obtaining a duration evaluation coefficient corresponding to the electric vehicle storage battery according to the charging evaluation coefficient corresponding to the electric vehicle storage battery, and analyzing and obtaining the charging duration corresponding to the electric vehicle storage battery through the duration evaluation coefficient corresponding to the electric vehicle storage battery;
the safety information analysis module is used for acquiring charging current, charging voltage and battery temperature corresponding to each time point of the electric vehicle storage battery during charging, further analyzing and obtaining a safety evaluation coefficient corresponding to the electric vehicle storage battery, and judging the safety state corresponding to the electric vehicle storage battery through the safety evaluation coefficient corresponding to the electric vehicle storage battery;
the discharging information acquisition module is used for acquiring running information and battery information corresponding to the electric vehicle storage battery during riding;
the discharging information analysis module is used for analyzing and obtaining a battery capacity demand coefficient corresponding to the electric vehicle storage battery according to the running information corresponding to the electric vehicle storage battery, analyzing and obtaining a battery influence factor corresponding to the electric vehicle storage battery according to the battery information corresponding to the electric vehicle storage battery, comparing the battery capacity demand coefficient corresponding to the electric vehicle storage battery, and calculating and obtaining a reference running speed if the required capacity of the electric vehicle storage battery is insufficient;
and the early warning terminal is used for early warning and prompting when the safety corresponding to the electric vehicle storage battery is abnormal.
The invention provides a charge-discharge control method and a charge-discharge control system, which are characterized in that firstly, environmental information is acquired, then, environmental assessment coefficients corresponding to an electric vehicle storage battery are obtained through analysis, charging current, charging voltage and charging duration corresponding to the electric vehicle storage battery are obtained through analysis, and meanwhile, safety assessment coefficients corresponding to the electric vehicle storage battery are obtained through analysis, so that the safety corresponding to the electric vehicle storage battery is judged, and the battery demand capacity corresponding to the electric vehicle storage battery is analyzed, so that the corresponding reference running speed of the electric vehicle storage battery is calculated, the safety application of the electric vehicle storage battery is better ensured, the defects in the prior art are overcome, the battery power quality and the power quality are better kept, the energy is effectively saved, the loss caused by unstable voltage in the charge-discharge control is reduced, the effective control of the charge-discharge process of the battery is realized, and the service life, the safety and the efficiency of the battery are improved.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (10)
1. A method of charge and discharge control, comprising:
step one, environmental information acquisition: acquiring environmental information of charging stations at all time points corresponding to the electric vehicle storage battery during charging, wherein the environmental information comprises environmental temperature and environmental humidity, and further analyzing and obtaining environmental influence coefficients corresponding to the electric vehicle storage battery;
step two, acquiring charging information: acquiring battery temperature, battery capacity and battery power consumption corresponding to the electric vehicle storage battery during charging, analyzing and obtaining a charging evaluation coefficient corresponding to the electric vehicle storage battery according to an environmental influence coefficient corresponding to the electric vehicle storage battery, and analyzing and obtaining charging current and charging voltage corresponding to the electric vehicle storage battery through the charging evaluation coefficient corresponding to the electric vehicle storage battery;
step three, time information analysis: acquiring a charging rate and a battery residual quantity corresponding to the electric vehicle storage battery during charging, analyzing and obtaining a duration evaluation coefficient corresponding to the electric vehicle storage battery according to a charging evaluation coefficient corresponding to the electric vehicle storage battery, and analyzing and obtaining a charging duration corresponding to the electric vehicle storage battery through the duration evaluation coefficient corresponding to the electric vehicle storage battery;
fourth, safety information analysis: acquiring charging current, charging voltage and battery temperature corresponding to each time point of the electric vehicle storage battery during charging, further analyzing to obtain a safety evaluation coefficient corresponding to the electric vehicle storage battery, and judging the safety state corresponding to the electric vehicle storage battery through the safety evaluation coefficient corresponding to the electric vehicle storage battery;
fifthly, acquiring discharge information: when riding, acquiring running information and battery information corresponding to the storage battery of the electric vehicle, wherein the running information comprises running speed, load force and running distance, and the battery information comprises battery temperature and loss;
step six, discharge information analysis: according to the running information corresponding to the electric vehicle storage battery, further analyzing to obtain a battery capacity demand coefficient corresponding to the electric vehicle storage battery, further analyzing to obtain a battery influence factor corresponding to the electric vehicle storage battery according to the battery information corresponding to the electric vehicle storage battery, comparing the battery capacity demand coefficient corresponding to the electric vehicle storage battery, and further calculating to obtain a reference running speed if the required capacity of the electric vehicle storage battery is insufficient;
step seven, early warning prompt: and when the safety corresponding to the storage battery of the electric vehicle is abnormal, early warning and prompting are carried out.
2. The method for controlling charge and discharge according to claim 1, wherein the analysis obtains the environmental impact coefficient corresponding to the electric vehicle storage battery, and the specific analysis process is as follows:
by calculation formulaAnalyzing to obtain environment influence coefficient corresponding to the electric vehicle storage battery>I represents the number of each time point, +.>，/>、/>Weight factors expressed as set ambient temperature, ambient humidity, respectively +.>Expressed as the set ambient temperature, +.>Expressed as set ambient humidity, ">Ambient temperature, denoted as i-th time point, ">The ambient humidity is expressed as the i-th time point.
3. The method for controlling charge and discharge according to claim 1, wherein the analysis obtains a charge evaluation coefficient corresponding to the electric vehicle storage battery, and the specific analysis process is as follows:
by calculation formulaAnalyzing to obtain a charging evaluation coefficient corresponding to the electric vehicle storage battery>，/>、/>、/>Weight factors expressed as set battery temperature, battery capacity, battery power consumption, respectively, +.>Indicated as set battery temperature,/->Expressed as a set battery capacity>Expressed as a set battery power consumption amount +.>Indicated as battery temperature corresponding to the electric vehicle battery, < >>Expressed as the corresponding battery capacity of the electric vehicle battery, < >>Expressed as the corresponding battery power consumption of the electric vehicle battery, < >>The environmental impact coefficient corresponding to the electric vehicle storage battery is expressed, and e is a natural constant.
4. The method for controlling charge and discharge according to claim 1, wherein the analysis obtains a charging current and a charging voltage corresponding to the electric vehicle storage battery, and the specific analysis process is as follows:
comparing the charging evaluation coefficient threshold value corresponding to the electric vehicle storage battery with each charging evaluation coefficient threshold value stored in the database, and if the charging evaluation coefficient threshold value corresponding to the electric vehicle storage battery is the same as a certain charging evaluation coefficient threshold value stored in the database, taking the charging current as the charging current corresponding to the electric vehicle storage battery, and obtaining the corresponding charging voltage in a comparison mode.
5. The method for controlling charge and discharge according to claim 1, wherein the analyzing obtains a duration evaluation coefficient corresponding to the electric vehicle storage battery, and the analyzing obtains a corresponding charging duration, and the specific analyzing process is as follows:
by calculation formulaAnalyzing to obtain a corresponding duration evaluation coefficient of the electric vehicle storage battery +.>，/>、/>Weight factors expressed as a set charge rate, remaining battery power, < >, respectively>Weight factor for the charge evaluation coefficient, +.>Denoted as set charge rate->Representing the set remaining battery power, +.>Denoted as charging rate of the electric vehicle battery, < >>Charging rate of electric vehicle battery corresponding to electric vehicle battery, respectively +.>The charging evaluation coefficient is expressed as a charging evaluation coefficient corresponding to the storage battery of the electric vehicle;
comparing the time length evaluation coefficient threshold corresponding to the electric vehicle storage battery with each time length evaluation coefficient threshold stored in the database, and taking the charging time length as the charging time length corresponding to the electric vehicle storage battery if the time length evaluation coefficient threshold corresponding to the electric vehicle storage battery is the same as a certain time length evaluation coefficient threshold stored in the database.
6. The method for controlling charge and discharge according to claim 1, wherein the analysis obtains a safety evaluation coefficient corresponding to the electric vehicle storage battery, and judges a safety state corresponding to the electric vehicle storage battery, and the specific analysis process is as follows:
by calculation formulaAnalyzing to obtain a safety evaluation coefficient corresponding to the electric vehicle storage battery>I represents the number of each time point, +.>，/>、/>、/>Weight factors respectively expressed as charging current, charging voltage and battery temperature corresponding to a preset electric vehicle storage battery, ">Expressed as a preset charging current, ">Expressed as a preset charging voltage, +.>Expressed as preset battery temperature,/->The charging current corresponding to the electric vehicle battery, expressed as the ith time point, ">Indicated as the charging voltage corresponding to the electric vehicle battery at the ith time point,the charging temperature corresponding to the electric vehicle storage battery at the ith time point is shown;
comparing the safety evaluation coefficient threshold value corresponding to the electric vehicle storage battery with the safety evaluation coefficient threshold value stored in the database, if the safety evaluation coefficient threshold value corresponding to the electric vehicle storage battery is smaller than the safety evaluation coefficient threshold value stored in the database, judging that the safety state corresponding to the electric vehicle storage battery is abnormal, carrying out early warning prompt, and if the safety evaluation coefficient threshold value corresponding to the electric vehicle storage battery is larger than or equal to the safety evaluation coefficient threshold value stored in the database, judging that the safety state corresponding to the electric vehicle storage battery is normal.
7. The method for controlling charge and discharge according to claim 1, wherein the analysis obtains a battery capacity demand coefficient corresponding to the electric vehicle storage battery, and the specific analysis process is as follows:
by calculation formulaAnalyzing to obtain a battery capacity demand coefficient corresponding to the electric vehicle storage battery>，/>、/>、/>Weight factors expressed as set driving speed, load force, driving distance, respectively, +.>Expressed as a set driving speed +.>Expressed as a set load force->Expressed as a set distance travelled,/->Expressed as the corresponding driving speed of the electric vehicle battery, < >>Represented as the corresponding load force of the electric vehicle battery,expressed as the corresponding driving distance of the electric vehicle accumulator, e is expressed as a natural constant, ">The battery influence factors are expressed as battery corresponding to the electric vehicle storage battery;
comparing the battery capacity demand coefficient threshold value corresponding to the electric vehicle storage battery with the battery capacity demand coefficient threshold value corresponding to the electric vehicle storage battery stored in the database, and if the battery capacity demand coefficient threshold value corresponding to the electric vehicle storage battery is smaller than the battery capacity demand coefficient threshold value corresponding to the electric vehicle storage battery stored in the database, judging that the battery capacity corresponding to the electric vehicle storage battery is unqualified, otherwise, judging that the battery capacity corresponding to the electric vehicle storage battery is unqualified.
8. The method for controlling charge and discharge according to claim 1, wherein the analysis obtains a battery influence factor corresponding to the electric vehicle storage battery, and the specific analysis process is as follows:
by calculation formulaAnalyzing to obtain battery influence factors corresponding to the electric vehicle storage battery>，/>、/>Weight factors expressed as set battery temperature, loss, respectively, +.>Indicated as set battery temperature,/->Expressed as the set loss amount->Expressed as electric vehicle storage battery correspondenceIs>Expressed as the corresponding loss of the battery of the electric vehicle.
9. The method for controlling charge and discharge according to claim 1, wherein the calculation results in a reference running speed, and the specific analysis process is as follows:
the battery capacity is subtracted from the target required electric quantity to obtain a target required electric quantity difference, the target required electric quantity difference is further compared with reference running distances under each reference running speed corresponding to each target required electric quantity difference stored in a database to obtain reference running distances under each reference running speed corresponding to the target required electric quantity difference, the running distance corresponding to the electric vehicle storage battery is further compared with the reference running distances under each reference running speed corresponding to the target required electric quantity difference, and if the difference between the running distance corresponding to the electric vehicle and the reference running distance under a certain reference running speed corresponding to the target required electric quantity difference is minimum, the reference running speed is used as the reference running speed corresponding to the electric vehicle.
10. A charge-discharge control system that performs the method of charge-discharge control of any one of claims 1 to 9, comprising: the environment information acquisition module is used for acquiring the environment information of the charging station at each time point corresponding to the electric vehicle storage battery during charging, and further analyzing and obtaining the environment influence coefficient corresponding to the electric vehicle storage battery;
the charging information acquisition module is used for acquiring the battery temperature, the battery capacity and the battery power consumption corresponding to the electric vehicle storage battery during charging, analyzing and obtaining a charging evaluation coefficient corresponding to the electric vehicle storage battery according to the environmental influence coefficient corresponding to the electric vehicle storage battery, and analyzing and obtaining the charging current and the charging voltage corresponding to the electric vehicle storage battery through the charging evaluation coefficient corresponding to the electric vehicle storage battery;
the time information analysis module is used for acquiring the charging rate and the battery residual quantity corresponding to the electric vehicle storage battery during charging, further analyzing and obtaining a duration evaluation coefficient corresponding to the electric vehicle storage battery according to the charging evaluation coefficient corresponding to the electric vehicle storage battery, and analyzing and obtaining the charging duration corresponding to the electric vehicle storage battery through the duration evaluation coefficient corresponding to the electric vehicle storage battery;
the safety information analysis module is used for acquiring charging current, charging voltage and battery temperature corresponding to each time point of the electric vehicle storage battery during charging, further analyzing and obtaining a safety evaluation coefficient corresponding to the electric vehicle storage battery, and judging the safety state corresponding to the electric vehicle storage battery through the safety evaluation coefficient corresponding to the electric vehicle storage battery;
the discharging information acquisition module is used for acquiring running information and battery information corresponding to the electric vehicle storage battery during riding;
the discharging information analysis module is used for analyzing and obtaining a battery capacity demand coefficient corresponding to the electric vehicle storage battery according to the running information corresponding to the electric vehicle storage battery, analyzing and obtaining a battery influence factor corresponding to the electric vehicle storage battery according to the battery information corresponding to the electric vehicle storage battery, comparing the battery capacity demand coefficient corresponding to the electric vehicle storage battery, and calculating and obtaining a reference running speed if the required capacity of the electric vehicle storage battery is insufficient;
and the early warning terminal is used for early warning and prompting when the safety corresponding to the electric vehicle storage battery is abnormal.
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