CN114179615A - Collision processing control method and system for fuel cell vehicle - Google Patents
Collision processing control method and system for fuel cell vehicle Download PDFInfo
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- CN114179615A CN114179615A CN202010967280.9A CN202010967280A CN114179615A CN 114179615 A CN114179615 A CN 114179615A CN 202010967280 A CN202010967280 A CN 202010967280A CN 114179615 A CN114179615 A CN 114179615A
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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
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0007—Measures or means for preventing or attenuating collisions
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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
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/04—Cutting off the power supply under fault conditions
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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
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
- B60L50/75—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using propulsion power supplied by both fuel cells and batteries
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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
- B60L58/30—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling fuel 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
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/40—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for controlling a combination of batteries and fuel cells
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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
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/40—Application of hydrogen technology to transportation, e.g. using fuel cells
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Fuel Cell (AREA)
Abstract
The invention relates to a collision processing control method and system for a fuel cell vehicle, and belongs to the technical field of vehicle control. The invention can cut off the driving force and close the fuel battery system in emergency when the vehicle is in collision; and meanwhile, when the driver judges that the collision does not influence the running of the fuel cell vehicle and the normal high-voltage power of the vehicle is not influenced, the fuel cell vehicle is controlled to run in a pure electric mode, the power battery is used as a high-voltage power supply to provide power output, and the closed state of the fuel cell is maintained. The control method of the invention takes the non-speciality of the driver into consideration when the control method is used for recovering the vehicle collision, avoids the situation that the fuel cell is directly controlled to start due to the judgment error of the driver, and reduces the running risk of the fuel cell vehicle.
Description
Technical Field
The invention relates to a collision processing control method and system for a fuel cell vehicle, and belongs to the technical field of vehicle control.
Background
A fuel cell vehicle (FCEV), which is one of new energy vehicles, is a trend of new energy vehicles due to its advantages of high efficiency, low noise, no pollutant discharge, and the like. The leakage prevention of hydrogen fuel is an important matter for the safety of fuel cell vehicles, and particularly, when the vehicles are in active/passive collision, the vehicles need to be automatically identified and processed, so that the danger is minimized, and the life and property safety of passengers is guaranteed.
When a fuel cell vehicle running on a road collides at present, the vehicle cannot actively recognize and take processing measures, and the method mainly depends on manual operation of a driver: the hydrogen valve is closed to cut off the supply of hydrogen fuel. This measure of handling carries a certain risk and is premised on the driver being conscious of his mind. For example, patent application publication No. CN1795113A discloses a control apparatus and a control method for a vehicle-mounted fuel cell power generation system, and proposes therein an apparatus and a control method for predicting the possibility of collision of a fuel cell, which improve the safety of a fuel cell vehicle by stopping power generation before a collision if the possibility of collision is high, which requires high accuracy of the collision prediction apparatus, and which is liable to cause driver complaints by shutting down the fuel cell power generation system without being influenced by the subjective judgment of the driver. Patent application publication No. CN107020964A discloses a fuel cell system for a vehicle and a control method thereof, and specifically proposes a collision detector that cuts off the supply of hydrogen when a collision occurs on the front/rear side of the vehicle, and that does not control the relief of the collision although the safety of the fuel cell vehicle is ensured.
Patent application publication No. CN110001420A discloses a safety control method for a hydrogen fuel cell, which provides a safety recovery step, wherein when a manual button of the hydrogen fuel cell is detected to receive reset information, a hydrogen system solenoid valve is opened according to the received information to recover the supply of hydrogen, and simultaneously, the voltage output to all high-voltage loads is recovered to make the vehicle run normally. Although the method gives control after collision is relieved, the fuel recovery system only depends on judgment of a driver or inspection of the vehicle, when the driver makes a judgment mistake or the vehicle cannot effectively detect the fault of the fuel battery system, if the fuel battery is directly started to enable the vehicle to recover normal operation, great potential safety hazard exists, and the safety of the vehicle and personnel cannot be guaranteed.
Disclosure of Invention
The invention aims to provide a collision processing control method and a collision processing control system of a fuel cell vehicle, which aim to solve the potential safety hazard in the current vehicle collision processing recovery process.
The present invention is directed to solving the above-described problems, and provides a collision processing control method for a fuel cell vehicle, comprising:
1) judging whether the fuel cell vehicle collides, cutting off the power output of the fuel cell vehicle when the vehicle collides, and closing the corresponding fuel cell system;
2) and if the collision does not affect the running of the fuel cell vehicle and the normal high-voltage power failure of the vehicle is not affected, controlling the high-voltage power on of the fuel cell vehicle to enable the vehicle to run in a pure electric mode and controlling the fuel cell system to be kept in a closed state.
The invention can cut off the driving force and close the fuel battery system in emergency when the vehicle is in collision; and meanwhile, when the driver judges that the collision does not influence the running of the fuel cell vehicle and the normal high-voltage power of the vehicle is not influenced, the fuel cell vehicle is controlled to run in a pure electric mode, the power battery is used as a high-voltage power supply to provide power output, and the closed state of the fuel cell is maintained. The control method of the invention takes the non-speciality of the driver into consideration when the control method is used for recovering the vehicle collision, avoids the situation that the fuel cell is directly controlled to start due to the judgment error of the driver, and reduces the running risk of the fuel cell vehicle.
Further, in order to ensure that the vehicle can travel to a safe area after a collision, the speed of the fuel cell vehicle is determined when the power output of the fuel cell vehicle is cut off, and the high-voltage depression of the fuel cell vehicle is controlled when the fuel cell vehicle reaches a safe speed or less.
Further, in order to guarantee the cruising ability of the vehicle, when the vehicle runs in the pure electric mode, the speed of the fuel cell vehicle is controlled within the set speed.
Further, the safe vehicle speed is 3 km/h.
Further, the set vehicle speed is 15 km/h.
The invention also provides a collision processing control system of the fuel cell vehicle, which comprises a collision detection module, a collision processing module and a collision recovery module;
the collision detection module is used for judging whether the fuel cell vehicle collides or not and sending a judgment result to the collision processing module;
the collision recovery module is used for sending a signal that the collision does not affect the running of the fuel cell vehicle and detecting whether the vehicle has a fault of high voltage electricity in normal;
the collision processing module is used for cutting off the power output of the fuel cell vehicle and closing a corresponding fuel cell system when receiving a collision signal of the vehicle detected by the collision detection module; and the control module is used for controlling the fuel cell vehicle to be electrified at high voltage when the fault that the collision sent by the collision recovery module does not influence the running of the fuel cell vehicle and the normal high voltage of the vehicle is not influenced is received, so that the vehicle runs in a pure electric mode, and the fuel cell system is controlled to be kept in a closed state.
The invention can cut off the driving force and close the fuel battery system in emergency when the vehicle is in collision; and meanwhile, when the driver judges that the collision does not influence the running of the fuel cell vehicle and the normal high-voltage power of the vehicle is not influenced, the fuel cell vehicle is controlled to run in a pure electric mode, the power battery is used as a high-voltage power supply to provide power output, and the closed state of the fuel cell is maintained. The control method of the invention takes the non-speciality of the driver into consideration when the control method is used for recovering the vehicle collision, avoids the situation that the fuel cell is directly controlled to start due to the judgment error of the driver, and reduces the running risk of the fuel cell vehicle.
Further, in order to ensure that the vehicle can run to a safe area after collision, the collision processing module judges the speed of the fuel cell vehicle when controlling and cutting off the power output of the fuel cell vehicle, and controls the high-voltage and low-voltage of the fuel cell vehicle when the fuel cell vehicle reaches the safe speed or below.
Further, in order to guarantee the cruising ability of the vehicle, the collision processing module controls the fuel cell vehicle to operate within the set vehicle speed when controlling the vehicle to operate in the pure electric mode.
Further, for convenient control, the collision processing module is a vehicle control unit.
Drawings
Fig. 1 is a flowchart of a collision processing control method of a fuel cell vehicle;
fig. 2 is a block diagram of the structure of a collision processing control system of the fuel cell vehicle of the invention.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings.
Method embodiment
The invention provides a new control method aiming at the potential safety hazard of a fuel cell in the collision recovery control process after the collision of the fuel cell vehicle, when the collision recovery is carried out, the fuel system is not recovered, namely the fuel cell system is still in a closed state, a hydrogen system electromagnetic valve is also in a disconnected state, the vehicle is controlled to be in a pure electric mode (only power is provided by a power battery), and the vehicle is driven in the mode at a limited speed. The specific implementation flow of the method is shown in fig. 1, and the implementation process is as follows:
1. and judging whether the vehicle is in collision, cutting off the power output of the fuel cell vehicle when the vehicle is in collision, and closing a corresponding fuel cell system.
The determination of whether the vehicle has a collision may be performed in various ways, such as by providing an acceleration sensor, a pressure sensor, etc. at a location where the vehicle is susceptible to a collision, or by determining whether an airbag of the vehicle is deployed, etc.
The power output of the vehicle is disconnected after the collision signal is detected, the power of the current fuel cell vehicle mainly comprises a fuel cell and a power cell, and the disconnection of the power output of the vehicle refers to the disconnection of the output of the fuel cell and the power cell, so that the vehicle has no driving force. Meanwhile, the fuel cell system and the hydrogen valve are forcibly closed, so that the influence on the safety of personnel caused by hydrogen leakage is prevented.
2. And when the vehicle reaches the safe speed or below, controlling the high voltage of the vehicle to be low.
After the power output of the vehicle is cut off, in order to ensure the safety of the vehicle, the high-voltage power-down of the vehicle is not immediately controlled at the moment, but the high-voltage power-down of the vehicle is controlled when the speed of the vehicle is reduced to be below the safe speed (3 km/h in the embodiment), and the high-voltage power-down of the vehicle is mainly controlled in the period of time, so that the steering system of the vehicle needs high-voltage power supply to ensure the normal work of the steering system of the vehicle, the vehicle can be conveniently and safely driven to a relatively safe area, for example, the vehicle is driven to a temporary parking road on the roadside, the traffic jam is avoided, and the safety of the vehicle is improved; when the vehicle reaches below the safe distance, the high-voltage reduction can be controlled, and the vehicle can be conveniently checked. The safe vehicle speed may also vary, typically requiring 5 km/h.
3. And the vehicle is recovered to be operated in the pure electric mode.
When a driver finds that the vehicle cannot run due to collision, the driver can open a collision release switch arranged in a driving area, the collision release switch can be connected to a vehicle control unit, when the vehicle control unit receives a trigger signal of the collision release switch, the vehicle is considered not to be influenced by the collision, self-checking is carried out on the vehicle at the moment, when the fault that the normal high-voltage electricity of the vehicle is not influenced is judged, the vehicle is controlled to be electrified at high voltage, the energy for electrifying the vehicle at the high voltage is provided by a power battery or a storage battery, after the high-voltage electricity is electrified, power output is recovered, and the power output is provided by the power battery at the moment. Faults affecting normal high voltage of the vehicle comprise high temperature faults of a power battery, low insulation resistance and the like, the existing vehicle control program has detection functions of all faults, when faults exist, a driver starts the vehicle according to conventional operation (key turning), and the vehicle cannot respond (namely the vehicle cannot be subjected to high voltage). Meanwhile, since the driver is not a professional maintenance inspector, erroneous judgment may be caused on the condition of the vehicle, and for the fuel cell vehicle, the safety of the fuel cell system is crucial.
The vehicle is limited to 15km/h, and can run to a detection point according to the speed, so that the detection of a professional is facilitated. The set vehicle speed in the invention is not limited to 15km/h, and can be determined according to the actual condition of the power battery, and the more the power battery residual capacity, the set vehicle speed can be set to be slightly higher, such as 20 km/h.
4. And carrying out professional detection on the fuel cell vehicle.
The method comprises the steps that a professional person detects the fuel cell vehicle after collision through professional equipment, whether all the fuel cell vehicle is normal or not is judged, if all the fuel cell vehicle is normal, a signal for clearing collision faults is fed back to a vehicle control unit, and the vehicle control unit has the right to control a fuel cell system to work after receiving the signal for clearing the collision faults, so that power is provided for the vehicle control unit, and the normal running state of the fuel cell vehicle is recovered.
As another embodiment, the vehicle control unit in this embodiment may adopt another controller of the vehicle, or may be additionally provided with a dedicated controller.
System embodiment
The collision processing control system of the fuel cell vehicle of the invention is shown in fig. 2 and comprises a collision detection module, a collision processing module and a collision recovery module, wherein the collision detection module is used for detecting whether the vehicle collides and sending the detection result to the collision processing module; the collision recovery module is used for feeding back a recovery signal to the collision processing module when a driver judges that the vehicle can run after a collision occurs and the normal high-voltage electricity of the vehicle is not influenced, and the collision processing module controls the high-voltage electricity of the vehicle according to the recovery signal so that the vehicle is in a pure electric mode (only the power battery provides power output), and simultaneously controls the fuel cell system and the hydrogen supply valve to be kept in a closed state and controls the vehicle to run at a limited speed.
Specifically, the collision detection module of the present invention may be an acceleration sensor or a pressure sensor disposed at a position where a vehicle is likely to collide, or may directly employ a collision system of the vehicle itself, the collision processing module may be a vehicle controller or a dedicated controller, and the collision recovery module includes a collision contact module disposed at a driver position and a self-inspection module of the vehicle itself.
When the fuel cell vehicle is in active/passive collision, a collision system of the vehicle can transmit a collision signal to the vehicle control unit, the vehicle control unit receives an effective command of the collision signal and gives a command of cutting off the driving force of the vehicle, closing a hydrogen valve and forcibly closing the fuel cell system, and after the vehicle reaches a safe vehicle speed (V <3km/h), the vehicle is put under high pressure. Once a collision occurs, a collision signal of a collision system is latched (the whole vehicle does not actively clear the collision signal of the collision system), and the collision signal of the collision system needs to be cleared by a professional after the professional detects that all fuel cell vehicles are normal. When the vehicle controller receives the faults that the collision signal is effective, the collision release switch is effective and the normal high voltage of the vehicle is not influenced, the vehicle can normally raise the high voltage and reach a driving state, but the vehicle can only drive in a pure electric mode at a speed limit (15 km/h). The fuel cell vehicle can be restored to a normal driving state only after a professional detects that the fuel cell vehicle is all normal and clears the collision signal.
The invention can control the vehicle to run at the speed limit in the pure electric mode after the vehicle is collided on the premise of ensuring the running safety of the fuel cell vehicle.
Claims (9)
1. A collision process control method of a fuel cell vehicle, characterized by comprising:
1) judging whether the fuel cell vehicle collides, cutting off the power output of the fuel cell vehicle when the vehicle collides, and closing the corresponding fuel cell system;
2) and if the collision does not affect the running of the fuel cell vehicle and the normal high-voltage power failure of the vehicle is not affected, controlling the high-voltage power on of the fuel cell vehicle to enable the vehicle to run in a pure electric mode and controlling the fuel cell system to be kept in a closed state.
2. The collision processing control method of a fuel cell vehicle according to claim 1, wherein the vehicle speed of the fuel cell vehicle is determined when the power output of the fuel cell vehicle is cut off, and the high-voltage depression of the fuel cell vehicle is controlled when the fuel cell vehicle reaches a safe vehicle speed or less.
3. The collision processing control method of a fuel cell vehicle according to claim 1 or 2, characterized in that the vehicle speed of the fuel cell vehicle is controlled within a set vehicle speed when the vehicle is operating in the pure electric mode.
4. The collision processing control method of a fuel cell vehicle according to claim 2, wherein the safe vehicle speed is 3 km/h.
5. The collision processing control method of a fuel cell vehicle according to claim 3, wherein the set vehicle speed is 15 km/h.
6. A collision handling control system of a fuel cell vehicle, characterized by comprising a collision detection module, a collision handling module, a collision recovery module;
the collision detection module is used for judging whether the fuel cell vehicle collides or not and sending a judgment result to the collision processing module;
the collision recovery module is used for sending a signal that the collision does not affect the running of the fuel cell vehicle and detecting whether the vehicle has a fault of high voltage electricity in normal;
the collision processing module is used for cutting off the power output of the fuel cell vehicle and closing a corresponding fuel cell system when receiving a collision signal of the vehicle detected by the collision detection module; and the control module is used for controlling the fuel cell vehicle to be electrified at high voltage when the fault that the collision sent by the collision recovery module does not influence the running of the fuel cell vehicle and the normal high voltage of the vehicle is not influenced is received, so that the vehicle runs in a pure electric mode, and the fuel cell system is controlled to be kept in a closed state.
7. The collision processing control system of a fuel cell vehicle according to claim 6, wherein the collision processing module determines a vehicle speed of the fuel cell vehicle when controlling to cut off a power output of the fuel cell vehicle, and controls the fuel cell vehicle to be depressed at a high voltage when the fuel cell vehicle reaches a safe vehicle speed or less.
8. The collision processing control system of the fuel cell vehicle according to claim 6 or 7, characterized in that the collision processing module further controls the fuel cell vehicle to operate within a set vehicle speed when controlling the vehicle to operate in the electric only mode.
9. The collision handling control system of a fuel cell vehicle according to claim 6 or 7, characterized in that the collision handling module is a vehicle control unit.
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| CN202010967280.9A CN114179615B (en) | 2020-09-15 | 2020-09-15 | Collision processing control method and system for fuel cell vehicle |
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| CN202010967280.9A CN114179615B (en) | 2020-09-15 | 2020-09-15 | Collision processing control method and system for fuel cell vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024098484A1 (en) * | 2022-11-08 | 2024-05-16 | 北汽福田汽车股份有限公司 | Vehicle control method and apparatus, and storage medium and vehicle |
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