CN113270935A - Solar charging control method for electric automobile - Google Patents
Solar charging control method for electric automobile Download PDFInfo
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- CN113270935A CN113270935A CN202110607674.8A CN202110607674A CN113270935A CN 113270935 A CN113270935 A CN 113270935A CN 202110607674 A CN202110607674 A CN 202110607674A CN 113270935 A CN113270935 A CN 113270935A
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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
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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
- B60L8/00—Electric propulsion with power supply from forces of nature, e.g. sun or wind
- B60L8/003—Converting light into electric energy, e.g. by using photo-voltaic systems
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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
- H02J7/00032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
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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
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
-
- 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
- Y02T90/14—Plug-in electric vehicles
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
A solar charging control method for an electric vehicle comprises the steps that when voltage generated by a solar photovoltaic panel and the duration time of the voltage reach set values, a solar inverter sends a high-voltage electrifying request to a vehicle control unit; the vehicle controller judges the state of the whole vehicle, if the vehicle is in a high-voltage state and in a driving mode, the solar inverter is allowed to charge, and direct-current high-voltage electricity is comprehensively distributed to charge the high-voltage battery pack and the driving motor is used as power output according to the power requirement of the driving motor and the electric quantity state of the high-voltage battery pack; if the whole vehicle is not in a high-voltage state, the whole vehicle controller judges whether the whole vehicle high-voltage electrifying condition is met and interactively controls the whole vehicle high-voltage electrifying with the high-voltage battery pack controller, the solar inverter is allowed to charge the high-voltage battery pack when the electrifying condition is met, and the charging process is finished when the electric quantity is full or the illumination intensity is insufficient. The solar charging control system comprehensively considers the solar charging control of the vehicle under the normal running working condition and the static working condition, and can increase the cruising mileage of the vehicle.
Description
Technical Field
The invention relates to solar charging, in particular to a solar charging control method for an electric automobile. The renewable energy source is applied to the electric automobile to increase the endurance mileage.
Background
With the increasing consumption of non-renewable energy, environmental pollution and the increasing impact of energy crisis, the replacement of non-renewable energy by renewable energy is urgent. As an industry with huge energy consumption, automobiles are bound to use renewable energy. With the continuous development of automobile technology, new energy automobile products such as electric automobiles and the like continuously enter the market.
Solar charging of the electric automobile can enable solar power generation to be used as one of energy sources of the electric automobile, zero emission can be achieved by adopting a solar power generation mode, the environment is protected, and meanwhile the endurance mileage of the automobile can be increased. The solar photovoltaic panel arranged on the top of the vehicle generates direct current with certain voltage under certain illumination intensity, and then the electricity generated by the solar photovoltaic panel is inverted into high-voltage direct current capable of charging a high-voltage battery pack through a CAN signal interaction logic strategy of each module, so that the solar charging of the electric vehicle is realized, the resources are saved, and the driving mileage of the vehicle is increased.
However, the current solar charging control method of the electric automobile has a single control mode, does not comprehensively consider solar charging control of the vehicle under a normal driving working condition and solar charging control of the vehicle under a static working condition when the vehicle is not electrified, and does not comprehensively consider vehicle states under a driving working condition and a parking working condition of the vehicle.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a solar charging control method for an electric automobile, which comprehensively considers the solar charging control under the working condition of normal running of the vehicle and the working condition of static state of the vehicle without power supply and can increase the endurance mileage of the vehicle.
The technical scheme adopted by the invention is as follows:
a solar charging control method for an electric automobile comprises the following steps:
1) when the voltage generated by power generation of illumination on the solar photovoltaic panel and the voltage duration reach set values, the solar inverter wakes up to send a high-voltage power-on request to the VCU of the vehicle control unit;
2) the VCU of the vehicle controller judges the state of the whole vehicle, if the VCU is in a high-voltage state and is in the gun insertion charging process, the charging action of the solar inverter is forbidden, and the charging pile is continuously kept connected for charging;
if the whole vehicle is in a high-voltage state and in a driving mode, the charging action of the solar inverter is allowed, and the VCU of the vehicle controller comprehensively distributes direct-current high-voltage electricity inverted by the solar inverter to charge the high-voltage battery pack and output the direct-current high-voltage electricity as power to the driving motor according to the power requirement of the driving motor and the electric quantity state of the high-voltage battery pack;
3) if the whole vehicle is not in a high-voltage state, the VCU judges whether the high-voltage power-on condition of the whole vehicle is met or not, interacts with the BMS, controls the high-voltage power-on of the whole vehicle, allows the direct-current high-voltage power inverted by the solar inverter to charge the high-voltage battery pack after the high-voltage power-on condition of the whole vehicle is met, and finishes the charging process through the interaction control of the controllers when the electric quantity is full or the illumination intensity is insufficient.
According to the solar charging control method for the electric automobile, the solar inverter and the VCU interactively request for high-voltage power-on of the whole automobile, the VCU judges the state of the whole automobile to carry out solar charging high-voltage power-on control, the BMS detects the electric quantity and the temperature state of a high-voltage battery pack and sends a charging state CAN signal to the VCU, and the VCU receives the BMS charging state CAN signal and carries out CAN signal interaction with the solar inverter after detecting that the whole automobile has no charging prohibition fault so as to allow the solar inverter to work and output inverted direct-current high-voltage power to carry out solar charging on the high-voltage battery pack.
According to the method for controlling the solar charging of the electric automobile, the VCU of the vehicle controller determines whether to allow the high voltage on the vehicle to charge the high-voltage battery pack according to the actual high-voltage state of the vehicle and the electric quantity state of the high-voltage battery pack.
According to the solar charging control method for the electric automobile, when the automobile is in a driving high-voltage state, when the voltage and the duration time generated by power generation on the solar photovoltaic panel reach set values, the illumination intensity is determined to be sufficient, and high-voltage direct current inverted by the solar inverter is comprehensively distributed to a high-voltage battery pack by the VCU according to the power consumption state of the whole automobile for charging and a driving motor is used as power output; when the voltage and the duration time generated by power generation on the solar photovoltaic panel reach set values, the solar inverter wakes up to work and requests the whole vehicle to be charged at high voltage, the VCU executes high voltage electrification according to the state of the whole vehicle, and then the high voltage battery pack is allowed to be charged.
According to the solar charging control method for the electric automobile, when a driver operates the automobile to power off in the driving solar charging process, the automobile cuts off power output but keeps a high-voltage state to continuously charge a high-voltage battery pack, and when the illumination intensity is insufficient or the electric quantity is fully charged, the VCU controls the whole automobile to finish charging at high voltage; when the vehicle is charged by solar energy in the power OFF state, a driver operates Ready electricity on the vehicle, the state of the whole vehicle can be converted into the solar charging condition in the driving mode, and the VCU distributes high-voltage direct current output by the solar inverter for the driving motor and the high-voltage battery pack.
The invention relates to a control method for solar charging of an electric vehicle, which comprises the following steps: the system comprises a solar photovoltaic panel for converting light energy into electric energy, a solar inverter for inverting low-voltage electricity generated by the solar photovoltaic panel into high-voltage direct current, a vehicle control unit VCU for judging and controlling the state of a whole vehicle, a high-voltage battery pack controller BMS for controlling and monitoring the charging state and a high-voltage battery pack for storing electric energy. The control device controls the solar charging of the vehicle through the CAN communication interactive logic strategy among the controller modules.
The solar photovoltaic panel converts light energy into electric energy, and when sunlight irradiates on the solar photovoltaic panel, power is generated to generate direct current with certain voltage. Because the high-voltage direct current in a specific voltage range is required for charging the high-voltage battery pack of the electric automobile, the direct current generated by the photovoltaic panel is inverted into the high-voltage direct current required by the charging of the automobile through the solar inverter, then the solar inverter can request the high voltage power on the whole automobile, and the VCU of the vehicle controller determines whether to allow the high voltage power on the whole automobile to charge the high-voltage battery pack according to the actual high voltage state of the automobile and the electric quantity state of the high-voltage battery pack.
The VCU is mainly responsible for judging and controlling the state of the whole vehicle, and in the process of solar charging, the VCU judges the state of the whole vehicle, and if the VCU is in a gun-plugging charging high-voltage state, the solar charging is forbidden; and if the vehicle is in a high-voltage driving state, the charging is allowed. If the vehicle is not in the high-voltage state, judging whether the vehicle condition meets a high-voltage power-on condition, and if the vehicle condition meets the high-voltage power-on condition, performing CAN signal interaction between the VCU of the vehicle control unit and the BMS to control the high-voltage relay to pull in to complete the high-voltage power-on action; and if the high-voltage electrifying condition is not met, forbidding the solar inverter to perform charging action, and ending the solar charging process.
High-voltage battery package controller BMS mainly is responsible for detecting and controlling the charge-discharge state of high-voltage battery package, and at the solar charging in-process, BMS is monitoring the electric quantity state of high-voltage battery package, and the rate of temperature state etc. based on these parameter control solar charging. The BMS judges whether to send charging preparation, charging and charging completion state signals to the VCU of the vehicle controller according to the state of the high-voltage battery pack, and the VCU controls the charging high-voltage power-on and power-off of the vehicle and detects the state of solar charging according to the charging state signals of the BMS.
The invention has the beneficial effects that:
1. the solar charging control method of the electric automobile comprises solar charging control under the normal running working condition of the automobile and solar charging control under the static working condition of the automobile without being electrified.
2. According to the solar charging control method for the electric automobile, when the vehicle is in normal running in a running mode or is in a static state when the power supply is OFF, the high-voltage battery pack is charged by solar power generation when the illumination intensity is sufficient and the vehicle has no fault, so that the effects of saving energy, reducing emission and increasing the endurance mileage of the vehicle are achieved.
Drawings
FIG. 1 is a solar charging interaction block diagram of an electric vehicle according to the present invention;
fig. 2 is a block diagram illustrating a solar charging process of the electric vehicle according to the present invention.
Detailed Description
The technical solution of the present invention is further described in detail below by means of specific embodiments and with reference to the accompanying drawings.
Example 1
Referring to fig. 1 and 2, the solar charging control method for the electric vehicle of the invention comprises the following steps:
1) when the voltage generated by power generation of illumination on the solar photovoltaic panel and the voltage duration reach set values, the solar inverter wakes up to send a high-voltage power-on request to the VCU of the vehicle control unit;
2) the VCU of the vehicle controller judges the state of the whole vehicle and determines whether to allow the high-voltage battery pack to be charged or not according to the actual high-voltage state of the vehicle and the electric quantity state of the high-voltage battery pack;
if the high-voltage charging is in a high-voltage state and the gun is in the charging process, the solar charging operation is forbidden and the charging pile is continuously kept connected for charging; if the vehicle is in a high-voltage state and in a driving mode, the vehicle controller VCU comprehensively distributes direct-current high-voltage electricity inverted by the solar inverter to charge the high-voltage battery pack and output the power to the driving motor as power according to the power requirement of the driving motor and the electric quantity state of the high-voltage battery pack;
3) if the whole vehicle is not in a high-voltage state, the VCU judges whether the high-voltage power-on condition of the whole vehicle is met or not, interacts with the BMS, controls the high-voltage power-on of the whole vehicle, allows the direct-current high-voltage power inverted by the solar inverter to charge the high-voltage battery pack after the high-voltage power-on condition of the whole vehicle is met, and finishes the charging process through the interaction control of the controllers when the electric quantity is full or the illumination intensity is insufficient.
Example 2
The solar charging control method of the electric vehicle in the embodiment is different from the solar charging control method of the embodiment 1 in that: further, the solar inverter and the VCU interactively request the whole vehicle to be electrified at high voltage, the VCU judges the state of the whole vehicle to carry out solar charging high-voltage electrification control, the BMS detects the electric quantity and the temperature state of the high-voltage battery pack and sends a charging state CAN signal to the VCU, and the VCU receives the charging state CAN signal sent by the BMS and carries out CAN signal interaction with the solar inverter after detecting that the whole vehicle has no charging prohibition fault so as to allow the solar inverter to work and output inverted direct current high-voltage electricity to carry out solar charging on the high-voltage battery pack.
Example 3
The solar charging control method of the electric vehicle in the embodiment is different from the solar charging control method of the embodiment 1 and the embodiment 2 in that: when the vehicle is in a driving high-voltage state, when the voltage and the duration time generated by power generation on the solar photovoltaic panel reach set values, the illumination intensity is determined to be sufficient, and high-voltage direct current inverted by the solar inverter is comprehensively distributed to a high-voltage battery pack by the VCU according to the power consumption state of the whole vehicle for charging and a driving motor is used as power output; when the voltage and the duration time generated by power generation on the solar photovoltaic panel reach set values, the solar inverter wakes up to work and requests the whole vehicle to be charged at high voltage, the VCU executes high voltage electrification according to the state of the whole vehicle, and then the high voltage battery pack is allowed to be charged.
When a driver operates the vehicle to power off in the charging process, the vehicle cuts off power output but keeps a high-voltage state to continuously charge the high-voltage battery pack, and when the illumination intensity is insufficient or the electric quantity is fully charged, the VCU controls the whole vehicle to finish charging under high voltage; when the vehicle is charged by solar energy in the power OFF state, a driver operates Ready electricity on the vehicle, the state of the whole vehicle can be converted into the solar charging condition in the driving mode, and the VCU distributes high-voltage direct current output by the solar inverter for the driving motor and the high-voltage battery pack.
Example 4
Fig. 1 is an interactive block diagram of related modules involved in the solar charging control method of the electric vehicle of the invention, the solar charging control device comprises a solar photovoltaic panel, a solar inverter, a vehicle control unit VCU, a high-voltage battery pack controller BMS and a high-voltage battery pack, and the solar charging process is controlled by interaction between hard wires or CAN signals of the modules.
The solar photovoltaic panel is a solar charging energy source device, when light irradiates on the solar photovoltaic panel arranged on the top of a vehicle, direct current with certain voltage and current can be generated due to the photoelectric effect, and the voltage and the current generated along with the change of the illumination intensity can also change. At the moment, the solar inverter can wake up and detect the voltage and the duration time generated by the solar photovoltaic panel, when the set value is reached, the illumination intensity is determined to be sufficient, the high-voltage battery pack can be charged, and the solar inverter can invert the direct current generated by the solar photovoltaic panel into the specific high-voltage direct current required by charging the high-voltage battery pack of the whole vehicle.
When the solar inverter works, the high-voltage direct current generated by inversion cannot directly charge the high-voltage battery pack, and the vehicle control unit VCU is required to detect the vehicle state. When the whole vehicle has no charging prohibition fault and the high-voltage battery pack controller BMS detects the state of electric quantity and the temperature of the high-voltage battery pack and CAN perform charging, the BMS sends a charging preparation CAN signal to the VCU, the VCU detects whether the high-voltage condition on the whole vehicle is met and performs high-voltage electrifying to control the whole vehicle to be in a high-voltage state, then the VCU sends a charging permission CAN signal to the solar inverter, and the solar inverter receives the charging permission signal and then outputs inverted high-voltage direct current to charge the high-voltage battery pack. In the solar charging process, the BMS controls and monitors the charging current and voltage, the charging rate and the like in real time, the VCU is responsible for monitoring the charging state, and when the electric quantity is full or the illumination intensity is insufficient, or the charging is forbidden to fail in the whole vehicle, the solar charging is finished.
Fig. 2 is a block diagram of a solar charging process, which further illustrates a solar charging interaction strategy, and the specific process includes:
when the voltage generated by the solar photovoltaic panel and the voltage duration time exceed the set program value, the solar inverter wakes up to work, and the electricity generated by the solar photovoltaic panel is inverted into the direct-current high-voltage electricity within the specific voltage range required by the charging of the vehicle high-voltage battery pack, so that the charging power supply is prepared for the high-voltage battery pack. Then the solar inverter sends a CAN signal of a high-voltage power-on request of the whole vehicle to a VCU of the whole vehicle controller, if the VCU is in a dormant state, the VCU wakes up to work and starts to judge the high-voltage state of the whole vehicle, and at the moment, the vehicle has two states: already in the upper high-voltage state and not in the upper high-voltage state.
When the vehicle is already in the high-voltage state, the VCU determines whether the vehicle is in the high-voltage state for charging or in the high-voltage state for traveling. If the vehicle is detected to be in the gun plugging charging high-voltage state and the gun plugging charging is in progress, the solar charging operation is forbidden and a corresponding CAN signal is fed back to the solar inverter to finish the solar charging process; if the vehicle is detected to be in a high-voltage state during driving and the vehicle is not in a charging prohibition fault, the solar charging is allowed to operate, and the solar inverter receives a charging signal allowed by the VCU and outputs the inverted direct-current high-voltage electricity. Because the vehicle is in a driving mode at this moment, a driving motor of the vehicle also consumes high voltage, and the VCU can judge the high-voltage power consumption state of the whole vehicle and comprehensively distribute high-voltage direct current of the solar inverter to supply power for high-voltage electric appliances and charge a high-voltage battery pack.
When the vehicle is not in a high-voltage state, the VCU judges whether the high-voltage condition on the whole vehicle is met, if the high-voltage condition on the vehicle is not met, the charging action of the solar inverter is forbidden, the solar charging is finished, and all modules of the whole vehicle wait for dormancy again; if the upper high-voltage condition is met, the VCU controls the whole vehicle to enter a high-voltage electrifying process to complete high-voltage electrifying, then the solar inverter is allowed to charge, and the solar inverter receives the charging allowing signal and then outputs the inverted direct-current high-voltage electricity to charge the battery pack.
When solar charging is carried out in a driving state, if a driver operates the vehicle to power off, the vehicle can exit from a driving Ready state and cut off the power output of the whole vehicle, but the vehicle is still maintained in a high-voltage state so as to continuously charge the high-voltage battery pack.
When the whole vehicle is awakened by the solar inverter to carry out solar charging in the OFF state of the power supply gear of the vehicle, if a driver operates Ready charging on the vehicle, the vehicle can jump from the solar charging state to the solar charging in the driving state, and the vehicle state can be directly switched to ensure the response speed of the whole vehicle without applying high voltage again in the process.
In the solar charging process of the vehicle, when the illumination intensity is insufficient and sufficient charging electric quantity cannot be generated, the solar inverter sends a signal that the illumination intensity is insufficient and the charging is required to be finished to the VCU, if the vehicle is in a driving state at the moment, the whole vehicle keeps a high-voltage state, the VCU controls to disconnect a power supply output by the solar inverter to finish the charging, and the electricity consumption of high-voltage electric appliances of the whole vehicle is provided by the discharging of a high-voltage battery pack; if the vehicle is in the power supply gear OFF state at the moment, the VCU controls the whole vehicle to enter a high-voltage power-OFF process to finish charging, and all modules of the whole vehicle wait for dormancy again.
When the electric quantity of a high-voltage battery pack of the vehicle is fully charged, the BMS feeds back a charging completion signal to the VCU, the VCU controls the whole vehicle to perform a high-voltage power-off process and disconnect the power supply output by the solar inverter to finish solar charging, and then all modules of the whole vehicle wait for dormancy again.
According to the solar charging control method for the electric automobile, the endurance mileage of the automobile can be effectively increased by utilizing the solar power generation to supply power to the automobile. The solar charging control under the normal running working condition of the vehicle and the solar charging control under the static working condition of the vehicle without being electrified are comprehensively considered, and the solar charging control system is reasonable in design, standard and safe.
Claims (3)
1. A solar charging control method for an electric vehicle is characterized by comprising the following steps: the method comprises the following steps:
step S1, when the voltage generated by the power generation of the light on the solar photovoltaic panel and the voltage duration reach set values, the solar inverter sends a high-voltage power-on request to the whole vehicle controller;
step S2, the vehicle control unit judges the vehicle state, if the vehicle is in high voltage state and in the gun insertion charging, the solar inverter is forbidden to act and the charging pile continues to be connected for charging;
if the whole vehicle is in a high-voltage state and in a driving mode, the solar inverter is allowed to act, and the vehicle controller comprehensively distributes direct-current high-voltage electricity inverted by the solar inverter to charge the high-voltage battery pack and output the direct-current high-voltage electricity as power to the driving motor according to the power requirement of the driving motor and the electric quantity state of the high-voltage battery pack;
step S3, if the vehicle is not in high voltage state, the high voltage battery pack controller detects the electric quantity and temperature state of the high voltage battery pack and sends a charging state CAN signal to the vehicle controller, the vehicle controller judges whether the high voltage electrifying condition of the vehicle is satisfied and interacts with the high voltage battery pack controller to control the high voltage electrifying of the vehicle, when the voltage generated by the electricity generation on the solar photovoltaic panel and the voltage duration reach the set value, the light intensity is determined to be sufficient, the solar energy inverter wakes up to work, a high voltage electrifying request is sent to the vehicle controller, the vehicle controller executes high voltage electrifying according to the vehicle state, the vehicle controller receives the charging state CAN signal of the high voltage battery pack controller and detects that the vehicle has no forbidden charging fault, then the vehicle controller interacts with the CAN signal with the solar energy inverter, when the high voltage electrifying condition of the vehicle is satisfied, the direct current high voltage electricity inverted by the solar energy inverter is allowed to charge the high voltage battery pack, and when the electric quantity is full or the illumination intensity is insufficient, finishing the charging process through interactive control of the controllers.
2. The solar charging control method for the electric vehicle according to claim 1, wherein: in step S2, the vehicle controller determines whether to allow the dc high voltage power on the vehicle to charge the high voltage battery pack according to the actual high voltage state of the vehicle and the state of charge of the high voltage battery pack.
3. The solar charging control method for the electric vehicle according to claim 1 or 2, wherein: in the solar charging process, after a driver operates the vehicle to power off, the vehicle cuts off power output but keeps a high-voltage state to continuously charge the high-voltage battery pack, and when the illumination intensity is insufficient or the electric quantity is fully charged, the vehicle controller controls the vehicle to finish charging at a high voltage; when the vehicle is charged by solar energy in the power-off state, if a driver operates the vehicle to charge, the vehicle state can be converted into the solar energy charging in the driving mode, and the vehicle controller distributes high-voltage direct current output by the solar inverter for the driving motor and the high-voltage battery pack.
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| CN202110607674.8A CN113270935B (en) | 2021-06-01 | 2021-06-01 | Solar charging control method for electric automobile |
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| CN202110607674.8A CN113270935B (en) | 2021-06-01 | 2021-06-01 | Solar charging control method for electric automobile |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023202681A1 (en) * | 2022-04-20 | 2023-10-26 | 北京车和家汽车科技有限公司 | Vehicle charging apparatus, vehicle, control method and medium |
| FR3140586A1 (en) * | 2022-10-06 | 2024-04-12 | Psa Automobiles Sa | HIGH EFFICIENCY CHARGING BATTERY VEHICLE BY INTERNAL PHOTOVOLTAIC PANEL POWER SOURCE |
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