CN113300448B - Photovoltaic power generation system for electric automobile - Google Patents
Photovoltaic power generation system for electric automobile Download PDFInfo
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- CN113300448B CN113300448B CN202110533889.XA CN202110533889A CN113300448B CN 113300448 B CN113300448 B CN 113300448B CN 202110533889 A CN202110533889 A CN 202110533889A CN 113300448 B CN113300448 B CN 113300448B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
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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
- B60L53/50—Charging stations characterised by energy-storage or power-generation means
- B60L53/51—Photovoltaic means
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/92—Energy efficient charging or discharging systems for batteries, ultracapacitors, supercapacitors or double-layer capacitors specially adapted for vehicles
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/12—Electric charging stations
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
Abstract
The invention discloses a photovoltaic power generation system for an electric automobile, which has the technical scheme that the photovoltaic power generation system comprises a vehicle main power supply, a vehicle standby power supply, a photovoltaic power generation module and a power supply control module, wherein the vehicle main power supply is used for supplying power to a driving system of the electric automobile and an in-automobile electric appliance, and the vehicle standby power supply is used for supplying power to the vehicle main power supply and the in-automobile electric appliance; the photovoltaic power generation module is arranged on the outer body of the electric automobile and used for supplying power to a vehicle standby power supply; the power supply control module is respectively connected with a vehicle main power supply and a vehicle standby power supply, the power supply control module is used for monitoring the electric quantity of the vehicle main power supply and the vehicle standby power supply and calculating to obtain a main electric quantity proportional value and a standby electric quantity proportional value, and the power supply control module is configured with a charging strategy and a power supply adjusting strategy; the system can improve the cruising ability of the electric automobile and prolong the service life of the power supply.
Description
Technical Field
The invention relates to the field of electric automobiles, in particular to a photovoltaic power generation system for an electric automobile.
Background
In recent years, the automobile industry is rapidly developed, and the electric automobile is pursued by people due to the pollution-free characteristic of the electric automobile. With the strong support of China, the development of electric automobiles is particularly rapid, and the market share of the electric automobiles in the automobile industry is increased year by year.
However, the endurance problem is always a short board of the electric vehicle due to the limited power capacity of the power supply, and the current solution to the endurance problem of the electric vehicle is to increase the endurance capacity by increasing the battery capacity and reducing the running power consumption, which has reached a state of being incandescent, so that it is difficult to have a large improvement by the technology, and even if the improvement can be achieved, the cost is relatively high. And the power supply needs to supply power to the driving system of the electric vehicle and each in-vehicle electric appliance at the same time, so that the power supply burden is large, the power supply is fast to use, the power supply needs to be charged and discharged frequently, the service life of the power supply is short, the power supply of the electric power supply is expensive, and the replacement cost of the power supply is high.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a photovoltaic power generation system for an electric automobile, which can improve the cruising ability of the electric automobile and prolong the service life of a power supply.
In order to realize the purpose, the invention provides the following technical scheme: a photovoltaic power generation system for an electric automobile comprises a vehicle main power supply, a vehicle standby power supply, a photovoltaic power generation module and a power supply control module;
the vehicle main power supply is used for supplying power to a driving system of the electric automobile and electric appliances in the automobile, and the vehicle standby power supply is used for supplying power to the vehicle main power supply and the electric appliances in the automobile;
the photovoltaic power generation module is arranged on the outer body of the electric automobile and used for supplying power to a vehicle standby power supply;
the power supply control module is respectively connected with the vehicle main power supply and the vehicle standby power supply, and is used for monitoring the electric quantity of the vehicle main power supply and the vehicle standby power supply and calculating to obtain a main electric quantity proportion value and a standby electric quantity proportion value, wherein the main electric quantity proportion value is the percentage of the electric quantity of the vehicle main power supply to the total electric quantity which can be accommodated by the vehicle main power supply, the standby electric quantity proportion value is the percentage of the electric quantity of the vehicle standby power supply to the total electric quantity which can be accommodated by the vehicle standby power supply, and the power supply control module is configured with a charging strategy and a power supply adjustment strategy;
the charging strategy comprises that when the power supply control module monitors that the proportion value of the standby electric quantity reaches a preset upper limit threshold of a first proportion, the power supply control module controls the vehicle standby power supply to continuously charge the vehicle main power supply until the proportion value of the standby electric quantity is reduced to be lower than the preset lower limit threshold of the first proportion or the proportion value of the main electric quantity reaches the preset upper limit threshold of the main proportion, and the power supply control module controls the vehicle standby power supply to stop charging the vehicle main power supply;
the power supply adjustment strategy comprises the steps that the power supply control module monitors the charging efficiency of the photovoltaic power generation module on the vehicle standby power supply and the power supply efficiency of the power supply control module on the electric appliances in the vehicle, when the proportion value of the standby power consumption is smaller than a preset second proportion lower limit threshold value, the current charging efficiency is compared with the power supply efficiency, if the charging efficiency is smaller than the power supply efficiency, the power supply control module controls the vehicle standby power supply to stop supplying power to the electric appliances in the vehicle, and simultaneously controls the main power supply of the vehicle to start supplying power to the electric appliances in the vehicle; when the proportion value of the standby power supply is larger than a preset second proportion upper limit threshold, the power supply control module controls the vehicle standby power supply to start supplying power to the electric appliances in the vehicle and controls the vehicle main power supply to stop supplying power to the electric appliances in the vehicle, the second proportion lower limit threshold is smaller than the first proportion lower limit threshold, and the second proportion upper limit threshold is smaller than the first proportion upper limit threshold.
As a further improvement of the present invention, the charging efficiency is a charging amount of the photovoltaic power generation module to the vehicle standby power source within a preset interval time, the discharging efficiency is a power supply amount of the vehicle standby power source to the in-vehicle electrical appliance within the interval time, and the power supply control module calculates the charging efficiency and the power supply efficiency at intervals.
As a further improvement of the present invention, when the charging efficiency is greater than the discharging efficiency, the power control module calculates, according to the spare power ratio value, the total power that can be accommodated by the vehicle spare power, the charging efficiency, the discharging efficiency, the interval time, and the first ratio upper threshold, a time required for charging the spare power, where the time required for charging the spare power represents a time required for the spare power ratio value of the vehicle spare power to reach the first ratio upper threshold, and a display screen is disposed in the electric vehicle and displays the active power ratio value, the spare power ratio value, and the time required for charging the spare power.
As a further improvement of the present invention, a standby power supply button is disposed in the electric vehicle, and when the standby power supply button is triggered, the power supply control module controls the vehicle standby power supply to charge the vehicle main power supply until the standby power consumption proportion value is reduced to a second proportion lower limit threshold.
As a further improvement of the present invention, the second ratio upper threshold is calculated by the first ratio upper threshold and the first ratio lower threshold through a preset threshold algorithm, and the second ratio upper threshold is positively correlated with the first ratio upper threshold and the first ratio lower threshold.
As a further refinement of the invention, the threshold algorithm is configured to:
wherein P is a second ratio upper limit threshold, S is a first ratio upper limit threshold, X is a first ratio lower limit threshold, a and b are preset weights, and 0.2-a-b-a-0.5-1-b-a-2.
As a further improvement of the present invention, when the power control module detects that the vehicle primary power supply cannot supply power to the electrical appliance in the vehicle, the power control module controls the vehicle standby power supply to supply power to the electrical appliance in the vehicle; when the power supply control module detects that the vehicle standby power supply cannot supply power to the electric appliances in the vehicle, the vehicle main power supply is controlled to supply power to the electric appliances in the vehicle.
The invention has the beneficial effects that:
1. the vehicle standby power supply is charged through the photovoltaic power generation module through the arrangement of the vehicle main power supply, the vehicle standby power supply, the photovoltaic power generation module and the power supply control module, and the vehicle standby power supply supplies power to the vehicle main power supply and the electric appliances in the vehicle, so that the cruising ability of the electric vehicle is improved under the condition that the total electric quantity which can be accommodated by the vehicle main power supply is limited.
2. The vehicle main power supply needs to supply power to a driving system of the battery automobile, so that the vehicle main power supply needs to have enough capacity to contain total electric quantity, and the manufacturing cost is more expensive than that of the vehicle standby power supply. The electric quantity generated by the photovoltaic power generation module is firstly charged into the vehicle standby power supply, and then is charged into the vehicle main power supply once instead of being directly charged into the vehicle main power supply after the electric quantity of the vehicle standby power supply is accumulated enough, so that the frequent intermittent charging of the vehicle main power supply is avoided, the loss of the vehicle main power supply is reduced, the service life of the vehicle main power supply is prolonged, and the use cost of the electric vehicle is reduced.
3. The vehicle main power supply and the vehicle standby power supply can both supply power to the electric appliances in the vehicle, and because the power consumption of the electric appliances in the vehicle is far lower than that of a driving system of the electric vehicle, when sunlight is sufficient, the electric quantity generated by the photovoltaic power generation module can be supplied to the electric appliances in the vehicle, through the setting of the power supply adjustment strategy, when the vehicle standby power supply has enough electric quantity or the charging efficiency is higher than the power supply efficiency, the vehicle standby power supply is preferentially used for supplying power to the electric appliances in the vehicle, so that the power supply burden of the vehicle main power supply can be reduced for a long time, the power use efficiency of the vehicle main power supply is reduced, and the service life of the vehicle main power supply is prolonged.
Drawings
FIG. 1 is a schematic block diagram of the present invention;
FIG. 2 is a schematic flow chart of a charging strategy;
fig. 3 is a schematic flow chart of a power supply adjustment strategy.
Reference numerals are as follows: 1. a vehicle main power supply; 2. a vehicle backup power source; 3. a photovoltaic power generation module; 4. and a power supply control module.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Referring to fig. 1, a photovoltaic power generation system for an electric vehicle according to this embodiment includes a vehicle main power supply 1, a vehicle standby power supply 2, a photovoltaic power generation module 3, and a power supply control module 4. The vehicle main power supply 1 is installed on an electric vehicle, and the vehicle standby power supply 2 and the photovoltaic power generation module 3 can be detachably connected with the electric vehicle.
Referring to fig. 1, a vehicle primary power supply 1 is used to supply power to a drive system of an electric vehicle and an in-vehicle electric appliance, and a vehicle backup power supply 2 is used to supply power to the vehicle primary power supply 1 and the in-vehicle electric appliance. Photovoltaic power generation module 3 is installed on electric automobile's outer automobile body, and photovoltaic power generation module 3 is including a plurality of solar cell panel, and a plurality of solar cell panel all install on electric automobile's outer automobile body top. The photovoltaic power generation module 3 is used for supplying power to the vehicle standby power supply 2. The power supply control module 4 is respectively connected with the vehicle main power supply 1 and the vehicle standby power supply 2, the power supply control module 4 is used for monitoring electric quantity of the vehicle main power supply 1 and the vehicle standby power supply 2 and calculating to obtain a main electric quantity proportion value and a standby electric quantity proportion value, the main electric quantity proportion value is the percentage of the electric quantity of the vehicle main power supply 1 in the total electric quantity which can be accommodated by the vehicle main power supply 1, and the standby electric quantity proportion value is the percentage of the electric quantity of the vehicle standby power supply 2 in the total electric quantity which can be accommodated by the vehicle standby power supply 2.
Referring to fig. 2, the power control module 4 is configured with a charging strategy and a power supply regulation strategy. The charging strategy comprises that when the power supply control module 4 monitors that the proportion value of the standby power consumption reaches a preset upper limit threshold of the first proportion, the power supply control module 4 controls the vehicle standby power supply 2 to continuously charge the vehicle main power supply 1 until the proportion value of the standby power consumption is reduced to be lower than a preset lower limit threshold of the first proportion or the proportion value of the main power consumption reaches a preset upper limit threshold of the main proportion, and the power supply control module 4 controls the vehicle standby power supply 2 to stop charging the vehicle main power supply 1.
For example, the first upper proportional limit threshold is set to 98%, the first lower proportional limit threshold is set to 15%, and the upper primary proportional limit threshold is set to 98%. When the proportion value of the main electric quantity is 90% and the photovoltaic power generation module 3 charges the vehicle standby power supply 2 to enable the proportion value of the standby electric quantity to continuously rise and reach 98%, the power supply control module 4 controls the vehicle standby power supply 2 to charge the vehicle main power supply 1, because the charging efficiency of the vehicle standby power supply 2 to the vehicle main power supply 1 is higher than the charging efficiency of the photovoltaic power generation module 3 to the vehicle standby power supply 2, the proportion value of the standby electric quantity is continuously reduced, and when the proportion value of the standby electric quantity is reduced to 15% or when the proportion value of the main electric quantity rises to 98%, the power supply control module 4 controls the vehicle standby power supply 2 to stop charging the vehicle main power supply 1.
Referring to fig. 3, the power supply adjustment strategy includes that the power control module 4 monitors charging efficiency of the photovoltaic power generation module 3 on the vehicle backup power supply 2 and power supply efficiency of the power control module 4 on the electrical appliances in the vehicle, the charging efficiency is a charging amount of the photovoltaic power generation module 3 on the vehicle backup power supply 2 in a preset interval time, the discharging efficiency is a power supply amount of the vehicle backup power supply 2 on the electrical appliances in the vehicle in the interval time, and the power control module 4 calculates the charging efficiency and the power supply efficiency at every interval time. When the proportion value of the standby power is smaller than a preset second proportion lower limit threshold, comparing the current charging efficiency with the power supply efficiency, if the charging efficiency is smaller than the power supply efficiency, controlling the vehicle standby power supply 2 to stop supplying power to the electric appliances in the vehicle by the power supply control module 4, and simultaneously controlling the vehicle main power supply 1 to start supplying power to the electric appliances in the vehicle; when the proportion value of the standby power supply is larger than a preset second proportion upper limit threshold, the power supply control module 4 controls the vehicle standby power supply 2 to start supplying power to the electric appliances in the vehicle and controls the vehicle main power supply 1 to stop supplying power to the electric appliances in the vehicle, the second proportion lower limit threshold is smaller than the first proportion lower limit threshold, and the second proportion upper limit threshold is smaller than the first proportion upper limit threshold.
The second ratio upper limit threshold is obtained by calculating the first ratio upper limit threshold and the first ratio lower limit threshold through a preset threshold algorithm, and the second ratio upper limit threshold is positively correlated with the first ratio upper limit threshold and the first ratio lower limit threshold. The threshold algorithm is configured to:
wherein P is a second ratio upper limit threshold, S is a first ratio upper limit threshold, X is a first ratio lower limit threshold, a and b are preset weights, and 0.2 Once is constructed from 0.5 and 1 once is constructed from 2.
For example, the first upper proportional threshold value S is set to 98%, the first lower proportional threshold value X is set to 15%, a is set to 0.4, and b is set to 1, and the second upper proportional threshold value P is calculated to be 45.2% according to the threshold algorithm. The interval time is set to 1 minute, the charging amount of the photovoltaic power generation module 3 to the vehicle standby power supply 2 in the last 1 minute is the charging efficiency, and the power supply amount of the vehicle standby power supply 2 to the electrical appliances in the vehicle in the last 1 minute is the power supply efficiency. The second lower limit of the proportion threshold is set to 5%, when the power control module 4 detects that the proportion value of the standby power is less than 5%, the current charging efficiency and the current power supply efficiency are compared, and if the charging efficiency is not less than the power supply efficiency, no action is taken. When the charging efficiency is lower than the power supply efficiency, the power supply control module 4 controls the vehicle standby power supply 2 to stop supplying power to the electrical appliances in the vehicle, and controls the vehicle main power supply 1 to start supplying power to the mechanical energy of the electrical appliances in the vehicle. Until the proportion value of the standby power supply is larger than 45.2%, the power supply control Mica controls the vehicle standby power supply 2 to start supplying power to the electrical appliances in the vehicle, and simultaneously controls the vehicle main power supply 1 to stop supplying power to the electrical appliances in the vehicle.
When the charging efficiency is greater than the discharging efficiency, the power supply control module 4 calculates the charging time of the standby power supply according to the standby power proportional value, the total electric quantity which can be accommodated by the vehicle standby power supply 2, the charging efficiency, the discharging efficiency, the interval time and the first proportional upper limit threshold, the charging time of the standby power supply represents the time required by the standby power proportional value of the vehicle standby power supply 2 to reach the first proportional upper limit threshold, and a display screen is arranged in the electric vehicle and displays the main power proportional value, the standby power proportional value and the charging time of the standby power supply.
A standby power supply button is arranged in the electric automobile, and when the standby power supply button is triggered, the power supply control module 4 controls the vehicle standby power supply 2 to charge the vehicle main power supply 1 until the proportion value of the standby power consumption is reduced to a second proportion lower limit threshold value. When the electric quantity of the vehicle main power supply 1 is insufficient, a driver can transfer the electric quantity of the vehicle standby power supply 2 to the vehicle main power supply 1 by triggering the standby power supply button, so that the electric automobile can be continuously driven.
Referring to fig. 1, when the power control module 4 detects that the vehicle main power supply 1 cannot supply power to the electrical appliances in the vehicle, the vehicle standby power supply 2 is controlled to supply power to the electrical appliances in the vehicle; when the power supply control module 4 detects that the vehicle standby power supply 2 cannot supply power to the electric appliances in the vehicle, the vehicle main power supply is controlled to supply power to the electric appliances in the vehicle. When one of the vehicle main power supply 1 or the vehicle standby power supply 2 has a problem in supplying power to the electrical appliances in the vehicle, the power supply control module 4 automatically switches the power supply so that the personnel in the vehicle can continue to use the electrical appliances in the vehicle.
The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (5)
1. A photovoltaic power generation system for an electric vehicle, characterized in that: the system comprises a vehicle main power supply (1), a vehicle standby power supply (2), a photovoltaic power generation module (3) and a power supply control module (4);
the vehicle main power supply (1) is used for supplying power to a driving system of an electric automobile and electric appliances in the automobile, and the vehicle standby power supply (2) is used for supplying power to the vehicle main power supply (1) and the electric appliances in the automobile;
the photovoltaic power generation module (3) is arranged on the outer body of the electric automobile, and the photovoltaic power generation module (3) is used for supplying power to the vehicle standby power supply (2);
the power supply control module (4) is respectively connected with the vehicle main power supply (1) and the vehicle standby power supply (2), the power supply control module (4) is used for monitoring the electric quantity of the vehicle main power supply (1) and the vehicle standby power supply (2) and calculating to obtain a main electric quantity proportion value and a standby electric quantity proportion value, the main electric quantity proportion value is the percentage of the electric quantity of the vehicle main power supply (1) in the total electric quantity which can be accommodated by the vehicle main power supply (1), the standby electric quantity proportion value is the percentage of the electric quantity of the vehicle standby power supply (2) in the total electric quantity which can be accommodated by the vehicle standby power supply (2), and the power supply control module (4) is configured with a charging strategy and a power supply adjustment strategy;
the charging strategy comprises the steps that when the power supply control module (4) monitors that the proportion value of the standby power reaches a preset first proportion upper limit threshold value, the power supply control module (4) controls the vehicle standby power supply (2) to continuously charge the vehicle main power supply (1) until the proportion value of the standby power supply is reduced to be lower than a preset first proportion lower limit threshold value or the proportion value of the main power supply reaches a preset main proportion upper limit threshold value, and the power supply control module (4) controls the vehicle standby power supply (2) to stop charging the vehicle main power supply (1);
the power supply adjustment strategy comprises the steps that the power supply control module (4) monitors the charging efficiency of the photovoltaic power generation module (3) to the vehicle standby power supply (2) and the power supply efficiency of the power supply control module (4) to the electric appliances in the vehicle, when the proportion value of the standby power is smaller than a preset second proportion lower limit threshold value, the current charging efficiency is compared with the power supply efficiency, if the charging efficiency is smaller than the power supply efficiency, the power supply control module (4) controls the vehicle standby power supply (2) to stop supplying power to the electric appliances in the vehicle, and simultaneously controls the vehicle main power supply (1) to start supplying power to the electric appliances in the vehicle; when the proportion value of the standby power is larger than a preset second proportion upper limit threshold, the power supply control module (4) controls the vehicle standby power supply (2) to start to supply power to the electric appliances in the vehicle, and controls the vehicle main power supply (1) to stop supplying power to the electric appliances in the vehicle, wherein the second proportion lower limit threshold is smaller than the first proportion lower limit threshold, and the second proportion upper limit threshold is smaller than the first proportion upper limit threshold;
the second ratio upper limit threshold is obtained by calculating the first ratio upper limit threshold and the first ratio lower limit threshold through a preset threshold algorithm, and the second ratio upper limit threshold is positively correlated with the first ratio upper limit threshold and the first ratio lower limit threshold;
the threshold algorithm is configured to:
wherein P is a second ratio upper limit threshold, S is a first ratio upper limit threshold, X is a first ratio lower limit threshold, a and b are preset weights, and 0.2-a-b-a-0.5-1-b-a-2.
2. The photovoltaic power generation system for the electric vehicle according to claim 1, characterized in that: the charging efficiency is that the photovoltaic power generation module (3) is right the charging quantity of the vehicle standby power supply (2) in the preset interval time, the power supply efficiency is the power supply quantity of the vehicle standby power supply (2) to the electrical appliances in the vehicle in the interval time, and the power supply control module (4) is right at the interval time every other the charging efficiency and the power supply efficiency are calculated.
3. The photovoltaic power generation system for the electric vehicle according to claim 2, characterized in that: when the charging efficiency is greater than the power supply efficiency, the power supply control module (4) calculates to obtain the time required by charging the standby power supply according to the standby power proportion value, the total electric quantity which can be accommodated by the vehicle standby power supply (2), the charging efficiency, the power supply efficiency, the interval time and the first proportion upper limit threshold, the time required by charging the standby power supply represents the time required by the standby power proportion value of the vehicle standby power supply (2) to reach the first proportion upper limit threshold, a display screen is arranged in the electric vehicle, and the display screen displays the main power proportion value, the standby power proportion value and the time required by charging the standby power supply.
4. The photovoltaic power generation system for the electric vehicle according to claim 1, characterized in that: a standby power supply button is arranged in the electric automobile, and when the standby power supply button is triggered, the power supply control module (4) controls the vehicle standby power supply (2) to charge the vehicle main power supply (1) until the standby power consumption proportion value is reduced to a second proportion lower limit threshold value.
5. The photovoltaic power generation system for an electric vehicle according to claim 1, characterized in that: when the power supply control module (4) detects that the vehicle main power supply (1) cannot supply power to the electric appliances in the vehicle, the vehicle standby power supply (2) is controlled to supply power to the electric appliances in the vehicle; when the power supply control module (4) detects that the vehicle standby power supply (2) cannot supply power to the electric appliances in the vehicle, the vehicle main power supply is controlled to supply power to the electric appliances in the vehicle.
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Denomination of invention: A photovoltaic power generation system for electric vehicles Effective date of registration: 20230828 Granted publication date: 20221101 Pledgee: Bank of China Limited by Share Ltd. Nanjing Jiangning branch Pledgor: Inbo supercomputing (Nanjing) Technology Co.,Ltd. Registration number: Y2023980054095 |
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