CN111497640A - Multi-energy hybrid power control method, device and system for fuel cell vehicle - Google Patents
Multi-energy hybrid power control method, device and system for fuel cell vehicle Download PDFInfo
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- CN111497640A CN111497640A CN202010348862.9A CN202010348862A CN111497640A CN 111497640 A CN111497640 A CN 111497640A CN 202010348862 A CN202010348862 A CN 202010348862A CN 111497640 A CN111497640 A CN 111497640A
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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
- B60L50/40—Electric propulsion with power supplied within the vehicle using propulsion power supplied by capacitors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- 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
- B60L58/40—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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/54—Drive Train control parameters related to batteries
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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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Abstract
According to the multi-energy hybrid power control method, device and system for the fuel cell vehicle, when the current running state of the whole vehicle is determined to be the vehicle arrival or deceleration, the super capacitor preferentially feeds back the braking energy, and the fuel cell provides the power output of the whole vehicle, namely: when the vehicle enters a station or decelerates, the whole vehicle is in a braking energy feedback state, preferably, super capacitor charging is carried out, when the super capacitor charging reaches a threshold value, the power battery is charged, and the charging and discharging times of the power battery are reduced by preferably charging the super capacitor, so that the service life of the power battery of the fuel battery and power battery hybrid vehicle is prolonged, and the cost of the fuel battery and power battery hybrid vehicle is further reduced.
Description
Technical Field
The application relates to the technical field of power supply of fuel cell vehicles, in particular to a multi-energy hybrid power control method, device and system of a fuel cell vehicle.
Background
With the wide popularization of electric automobiles, the short plate of the driving range of the electric automobile gradually becomes the focus of attention of people, the development of the electric automobile is hindered by the high cost and the short service life of the current battery, and due to the outstanding advantages of long driving range, zero emission, high efficiency and the like, the anxiety of people on the driving range and the short service life of the electric automobile is relieved by the appearance of the fuel battery and power battery hybrid electric automobile, the short plate is already an important power source of the automobile, and the short plate is mainly widely applied to vehicles such as passenger cars, passenger cars and the like at present.
In the control process of the whole vehicle, according to the actual operation condition, the fuel cell vehicle adopting two energy sources of a fuel cell and a power cell, for example: the urban passenger car with 12 meters of fuel cells is controlled by a 60kW fuel cell system and a 100kWh power cell in a hybrid mode, the average running speed under the working condition of public transport is 20km/h, the urban passenger car runs 250km every day, the average output power per hour is 30kW, 5 hours are required for hundred kilometers to run, when a step control mode is adopted, the proportion of the direct drive motor of the fuel cell is generally 30-40%, the rest power generation power is 60-70% to charge the power cells, 90kWh-105kWh is obtained through calculation, the hundred kilometers need to be the power cells for cyclic charge and discharge times of 0.9-1.05, therefore, the cyclic charge and discharge times of the power cells are required at least 2.25-2.625 every day, however, as the charge and discharge cycles of the power cells are about 3000 times, the service lives of the power cells of the existing fuel cell and power cell hybrid vehicles are only 3.6 years through calculation, the cost of replacing the power battery is high, which results in high cost of the hybrid vehicle.
Therefore, how to reduce the number of charging and discharging times of the power battery, so as to improve the service life of the power battery of the fuel battery and the power battery hybrid vehicle, and further reduce the cost of the fuel battery and the power battery hybrid vehicle is a problem to be solved.
Disclosure of Invention
The application provides a multi-energy hybrid power control method, a device and a system for a fuel cell vehicle, and aims to: how to reduce the charging and discharging times of the power battery, thereby prolonging the service life of the power battery of the fuel battery and the power battery hybrid vehicle and further reducing the cost of the fuel battery and the power battery hybrid vehicle.
In order to achieve the above object, the present application provides the following technical solutions:
a multi-energy hybrid power control method of a fuel cell vehicle is applied to a multi-energy hybrid power control system of the fuel cell vehicle, and comprises the following steps:
acquiring current vehicle control parameters, and determining the current vehicle running state according to the current vehicle control parameters;
the method comprises the steps of searching a power supply strategy corresponding to the current running state of the whole vehicle from a preset strategy data table to determine a power source, and providing the power and energy requirements of the whole vehicle for a motor controller, wherein the power source comprises a fuel cell, a power cell and a super capacitor, the preset strategy data table stores the corresponding relation among the running state of the whole vehicle, the power supply strategy and the power source, and the corresponding relation among the running state of the whole vehicle, the power supply strategy and the power source at least comprises the following steps: when a vehicle arrives or decelerates, the super capacitor preferentially feeds back braking energy, and the fuel cell provides power output of the whole vehicle;
and determining a finished vehicle control command according to the power source, and sending the finished vehicle control command to the motor controller so as to drive the motor to normally work.
Preferably, the corresponding relationship between the vehicle running state, the power supply strategy and the power source further includes:
when the vehicle starts, or the fuel cell is not started, the power cell provides the power output of the whole vehicle; under the normal running state of the vehicle, when the vehicle starts to accelerate, the super capacitor provides the power output of the whole vehicle; and under the normal running state of the vehicle, when high-power output is required to be continuously carried out, the fuel battery and the power battery provide the power output of the whole vehicle.
Preferably, the acquiring of the current vehicle control parameter and the determining of the current vehicle running state according to the current vehicle control parameter specifically include:
acquiring current vehicle control parameters, and calculating a vehicle running state index according to the current vehicle control parameters, wherein the vehicle running state index is used for identifying the vehicle running state;
when the running state index of the whole vehicle is in a first preset range, determining that the current running state of the whole vehicle is in a vehicle starting state or a fuel cell is not started;
when the whole vehicle running state index is in a second preset range, determining that the current whole vehicle running state is a vehicle normal running state, and starting and accelerating the vehicle;
when the whole vehicle running state index is in a third preset range, determining that the current whole vehicle running state is the vehicle arrival or deceleration;
and when the running state index of the whole vehicle is in a fourth preset range, determining that the current running state of the whole vehicle is in a normal running state of the vehicle and needs to be continuously output with high power.
Preferably, the process for constructing the preset policy data table specifically includes:
acquiring corresponding vehicle running parameters under each vehicle running state in the vehicle test running process;
determining a corresponding vehicle running state according to the vehicle running parameters;
determining a corresponding power supply strategy according to the running state of the whole vehicle, and setting a power source corresponding to the running state of the whole vehicle according to the power supply strategy;
and constructing the preset strategy data table in a database according to the corresponding relation formed among the whole vehicle running state, the power supply strategy and the power source.
A multi-energy hybrid power control device of a fuel cell vehicle is applied to a multi-energy hybrid power control system of the fuel cell vehicle, and comprises:
the first processing unit is used for acquiring current vehicle control parameters and determining the current vehicle running state according to the current vehicle control parameters;
the second processing unit is used for searching a power supply strategy corresponding to the current running state of the whole vehicle from a preset strategy data table to determine a power source and providing the power and energy requirements of the whole vehicle for the motor controller, wherein the power source comprises a fuel cell, a power cell and a super capacitor, the preset strategy data table stores the corresponding relation among the running state of the whole vehicle, the power supply strategy and the power source, and the corresponding relation among the running state of the whole vehicle, the power supply strategy and the power source at least comprises: when a vehicle arrives or decelerates, the super capacitor preferentially feeds back braking energy, and the fuel cell provides power output of the whole vehicle;
and the third processing unit is used for determining a finished vehicle control instruction according to the power source and sending the finished vehicle control instruction to the motor controller so as to drive the motor to normally work.
Preferably, the corresponding relationship between the vehicle running state, the power supply strategy and the power source further includes:
when the vehicle starts, or the fuel cell is not started, the power cell provides the power output of the whole vehicle; under the normal running state of the vehicle, when the vehicle starts to accelerate, the super capacitor provides the power output of the whole vehicle; and under the normal running state of the vehicle, when high-power output is required to be continuously carried out, the fuel battery and the power battery provide the power output of the whole vehicle.
Preferably, the acquiring of the current vehicle control parameter and the determining of the current vehicle running state according to the current vehicle control parameter specifically include:
acquiring current vehicle control parameters, and calculating a vehicle running state index according to the current vehicle control parameters, wherein the vehicle running state index is used for identifying the vehicle running state;
when the running state index of the whole vehicle is in a first preset range, determining that the current running state of the whole vehicle is in a vehicle starting state or a fuel cell is not started;
when the whole vehicle running state index is in a second preset range, determining that the current whole vehicle running state is a vehicle normal running state, and starting and accelerating the vehicle;
when the whole vehicle running state index is in a third preset range, determining that the current whole vehicle running state is the vehicle arrival or deceleration;
and when the running state index of the whole vehicle is in a fourth preset range, determining that the current running state of the whole vehicle is in a normal running state of the vehicle and needs to be continuously output with high power.
Preferably, the second processing unit is further specifically configured to:
acquiring corresponding vehicle running parameters under each vehicle running state in the vehicle test running process;
determining a corresponding vehicle running state according to the vehicle running parameters;
determining a corresponding power supply strategy according to the running state of the whole vehicle, and setting a power source corresponding to the running state of the whole vehicle according to the power supply strategy;
and constructing the preset strategy data table in a database according to the corresponding relation formed among the whole vehicle running state, the power supply strategy and the power source.
A storage medium including a stored program, wherein a device on which the storage medium is located is controlled to execute the fuel cell vehicle multi-energy hybrid control method as described above when the program is executed.
An electronic device comprising at least one processor, and at least one memory, bus connected with the processor; the processor and the memory complete mutual communication through the bus; the processor is used for calling the program instructions in the memory so as to execute the fuel cell vehicle multi-energy hybrid power control method.
The application provides a fuel cell car multi-energy hybrid control method, device and system, the corresponding relation that stores whole car running state, power supply strategy and power source in advance in the database, through acquireing current whole car control parameter, and according to current whole car control parameter confirms current whole car running state, look for in the strategy data table of predetermineeing with the power supply strategy that whole car current running state corresponds confirms power source whole car current running state and confirms the power source, and motor controller provides whole car power and energy demand, finally confirms whole car control command according to the power source, sends whole car control command to motor controller to driving motor normal work.
When the current running state of the whole vehicle is determined to be the vehicle arrival or deceleration, the super capacitor preferentially feeds back the braking energy, and the fuel cell provides the power output of the whole vehicle, namely: when the vehicle enters a station or decelerates, the whole vehicle is in a braking energy feedback state, preferably, super capacitor charging is carried out, when the super capacitor charging reaches a threshold value, the power battery is charged, and the charging and discharging times of the power battery are reduced by preferably charging the super capacitor, so that the service life of the power battery of the fuel battery and power battery hybrid vehicle is prolonged, and the cost of the fuel battery and power battery hybrid vehicle is further reduced.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a multi-energy hybrid power control system of a fuel cell vehicle according to an embodiment of the present disclosure;
fig. 2 is a flowchart of a multi-energy hybrid power control method for a fuel cell vehicle according to an embodiment of the present disclosure;
FIG. 3 is a schematic structural diagram of a multi-energy hybrid power system of a fuel cell vehicle according to an embodiment of the present disclosure;
FIG. 4 is a schematic diagram of energy flow during an approach or deceleration of a vehicle according to an embodiment of the present disclosure;
FIG. 5 is a schematic diagram of energy flow during vehicle start-up or when the fuel cell is not turned on according to an embodiment of the present disclosure;
FIG. 6 is a schematic diagram of energy flow when a vehicle starts to accelerate in a normal running state of the vehicle according to an embodiment of the present application;
FIG. 7 is a schematic diagram of energy flow when a high power output is required to be continuously performed during a normal vehicle running state according to an embodiment of the present disclosure;
fig. 8 is a flowchart of a specific implementation manner for acquiring a current vehicle control parameter and determining a current vehicle running state according to the current vehicle control parameter according to the embodiment of the present application;
fig. 9 is a flowchart of a specific implementation of a process of constructing a preset policy data table according to an embodiment of the present application;
fig. 10 is a schematic structural diagram of a multi-energy hybrid power control device of a fuel cell vehicle according to an embodiment of the present disclosure;
fig. 11 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Detailed Description
The application provides a fuel cell vehicle multi-energy hybrid power control method and device, which are applied to a fuel cell vehicle multi-energy hybrid power control system of an application scene shown in figure 1, and the fuel cell vehicle multi-energy hybrid power control system comprises: the hybrid power system comprises a vehicle control unit 10, a fuel cell vehicle multi-energy hybrid power system 20 and a motor controller 30, wherein the vehicle control unit 10 acquires current vehicle control parameters, determines the current running state of the vehicle according to the current vehicle control parameters, and sends the current running state of the vehicle to the fuel cell vehicle multi-energy hybrid power system 20. When receiving the current running state of the whole vehicle, the multi-energy hybrid power system 20 of the fuel cell vehicle searches the corresponding power supply strategy from the preset strategy data table to determine the power source, and provides the power and energy requirements of the whole vehicle for the motor controller 30. The power source comprises a fuel cell, a power cell and a super capacitor, the corresponding relation among the running state of the whole vehicle, the power supply strategy and the power source is stored in a preset strategy data table, and the corresponding relation among the running state of the whole vehicle, the power supply strategy and the power source at least comprises the following steps: when the vehicle arrives or decelerates, the super capacitor feeds back the braking energy preferentially, and the fuel battery provides the power output of the whole vehicle. And finally, determining a control command of the whole vehicle according to the power source, and sending the control command of the whole vehicle to the motor controller 30 so as to drive the motor to work normally.
The invention of the present application aims to: how to reduce the charging and discharging times of the power battery, thereby prolonging the service life of the power battery of the fuel battery and the power battery hybrid vehicle and further reducing the cost of the fuel battery and the power battery hybrid vehicle.
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
As shown in fig. 2, an embodiment of the present application provides a flow chart of a multi-energy hybrid power control method for a fuel cell vehicle, which is applied to a multi-energy hybrid power control system of the fuel cell vehicle, and the method specifically includes the following steps:
s201: and acquiring current vehicle control parameters, and determining the current vehicle running state according to the current vehicle control parameters.
As shown in fig. 1, the vehicle controller 10 obtains current vehicle control parameters, determines a current operating state of the vehicle according to the current vehicle control parameters, and sends the current operating state of the vehicle to the multi-energy hybrid power system 20 of the fuel cell vehicle.
In this embodiment of the present application, the current vehicle control parameter at least includes one of speed, acceleration, rotation speed, and torque. The current vehicle running state can be determined according to the current vehicle control parameters, and it should be noted that the vehicle running state may include but is not limited to: when the vehicle starts, or the fuel cell is not started; under the normal running state of the vehicle, the vehicle starts to accelerate; entering or decelerating at the vehicle; under normal vehicle operating conditions, a continuously high power output is required.
S202: and searching a power supply strategy corresponding to the current running state of the finished automobile from a preset strategy data table to determine a power source, and providing finished automobile power and energy requirements for a motor controller.
As shown in fig. 1, when receiving the current operating state of the entire vehicle, the fuel cell vehicle multi-energy hybrid system 20 searches the preset strategy data table for a corresponding power supply strategy to determine a power source, and provides the entire vehicle power and energy requirements for the motor controller 30.
It should be noted that the power source includes a fuel cell, a power cell and a super capacitor, a preset policy data table stores a corresponding relationship between the running state of the entire vehicle and a corresponding power supply policy, and the corresponding relationship between the running state of the entire vehicle, the power supply policy and the power source at least includes: when the vehicle arrives or decelerates, the super capacitor feeds back the braking energy preferentially, and the fuel battery provides the power output of the whole vehicle.
Further, the above corresponding relationship between the vehicle running state, the power supply strategy and the power source, when the vehicle arrives at a station or decelerates, preferentially feeding back the braking energy by the super capacitor, and on the basis that the fuel cell provides the power output of the vehicle, further includes:
when the vehicle starts, or the fuel cell is not started, the power cell provides the power output of the whole vehicle; under the normal running state of the vehicle, when the vehicle starts to accelerate, the super capacitor provides the power output of the whole vehicle; and under the normal running state of the vehicle, when high-power output is required to be continuously carried out, the fuel battery and the power battery provide the power output of the whole vehicle.
S203: and determining a finished automobile control instruction according to the power source, and sending the finished automobile control instruction to the motor controller so as to drive the motor to normally work.
After determining the power source, the multi-energy hybrid power system 20 determines a vehicle control command according to the power source, and sends the vehicle control command to the motor controller 30 to drive the motor to normally operate, so as to realize normal operation of the multi-energy hybrid power vehicle.
It should be noted that the multi-energy hybrid control method for the fuel cell vehicle provided in the embodiment of the present application includes three energy sources: because the output voltage of the current fuel cell is lower, generally about 300V, and the output voltage of the whole vehicle is generally 400-750V, the output voltage of the fuel cell needs to be increased through DC/DC and then enters an energy distribution unit to finally drive the vehicle; the power battery can directly drive the vehicle; the super capacitor needs to go through the bidirectional DC/DC and then enter the energy distribution unit to finally drive the vehicle, as shown in fig. 3, when driving, the fuel cell, the power cell and the super capacitor can all provide power demand, and when braking, the braking energy is preferentially fed back to the super capacitor, that is: and feeding back the super capacitor through bidirectional DC/DC. Fig. 4, fig. 5, fig. 6 and fig. 7 are energy flow diagrams during energy feedback in normal operation, respectively; the energy flow diagram is shown when the vehicle starts or the fuel cell is not started; under the normal operation state, the energy flow schematic diagram when the vehicle starts to accelerate and under the normal operation state of the vehicle, the energy flow schematic diagram when high power output is required continuously.
Through the above-mentioned fig. 4-fig. 7, the embodiment of the present application adds the super capacitor on the basis of the original hybrid vehicle of fuel cell and power cell, and because the super capacitor has long cycle service life, the number of cycles of deep charge and discharge can reach several tens of thousands, when the vehicle needs to feed back the braking energy, the braking energy is fed back to the super capacitor preferentially, similarly, taking the ordinary bus route as an example, the braking energy fed back by each braking is generally about 0.5kWh, one route is set to about 20km, the bus stop is set to 20, the number of traffic lights is set to 10, by calculation, the number of braking feedbacks can reach 150 per kilometer, the total braking feedback energy can reach 75kWh, therefore, the feedback energy of the power cell can be reduced from 90-105kWh to 15-30kWh, the cycle number of the power cell per kilometer can be reduced from 0.9-1.05 to 0.15-0.3, the number of cycles per day is reduced to 0.375-0.75, so that the service life of the power battery can be prolonged from only 3.6 years in the prior art to more than 10 years by adding the super capacitor.
The embodiment of the application provides a multi-energy hybrid power control method for a fuel cell vehicle, which stores the corresponding relation of a whole vehicle running state, a power supply strategy and a power source in a database in advance, determines the current whole vehicle running state by acquiring the current whole vehicle control parameter and according to the current whole vehicle control parameter, finds the power source and the power source according to the power supply strategy corresponding to the current running state of the whole vehicle from a preset strategy data table, determines the power source and the power source according to the current running state of the whole vehicle, provides the power and energy requirements of the whole vehicle by a motor controller, finally determines a whole vehicle control instruction according to the power source, and sends the whole vehicle control instruction to the motor controller so as to drive a motor to work normally.
When the current running state of the whole vehicle is determined to be the vehicle arrival or deceleration, the super capacitor preferentially feeds back the braking energy, and the fuel cell provides the power output of the whole vehicle, namely: when the vehicle enters a station or decelerates, the whole vehicle is in a braking energy feedback state, preferably, super capacitor charging is carried out, when the super capacitor charging reaches a threshold value, the power battery is charged, and the charging and discharging times of the power battery are reduced by preferably charging the super capacitor, so that the service life of the power battery of the fuel battery and power battery hybrid vehicle is prolonged, and the cost of the fuel battery and power battery hybrid vehicle is further reduced.
As shown in fig. 8, the obtaining of the current vehicle control parameter and the determining of the current vehicle running state according to the current vehicle control parameter specifically include the following steps:
s801: the method comprises the steps of obtaining current vehicle control parameters, and calculating vehicle running state indexes according to the current vehicle control parameters, wherein the vehicle running state indexes are used for identifying the vehicle running state.
In this embodiment of the present application, the current vehicle control parameter at least includes one of speed, acceleration, rotation speed, and torque. And calculating to obtain the running state index of the whole vehicle according to one of the speed, the acceleration, the rotating speed and the torque and a preset calculation formula, wherein the running state index of the whole vehicle is used for identifying the running state of the whole vehicle.
S802: and when the running state index of the whole vehicle is in a first preset range, determining that the current running state of the whole vehicle is the starting state of the vehicle or the non-starting state of the fuel cell.
S803: and when the running state index of the whole vehicle is in a second preset range, determining that the current running state of the whole vehicle is the normal running state of the vehicle, and starting and accelerating the vehicle.
S804: and when the whole vehicle running state index is in a third preset range, determining that the current whole vehicle running state is the vehicle arrival or deceleration.
S805: and when the running state index of the whole vehicle is in a fourth preset range, determining that the current running state of the whole vehicle is in a normal running state of the vehicle and needs to be continuously output with high power.
In the embodiment of the present application, it should be noted that the first preset range, the second preset range, the third preset range, and the fourth preset range are set according to actual requirements, and for those skilled in the art, the first preset range, the second preset range, the third preset range, and the fourth preset range may be adjusted according to actual requirements, and belong to the prior art, and the specific range setting is not described and limited in detail herein.
In the embodiment of the application, the preset strategy data table is stored in the database according to the test run process of the whole vehicle.
As shown in fig. 9, the process of constructing the preset policy data table may specifically include the following steps:
s901: and acquiring the corresponding vehicle running parameters under each vehicle running state in the vehicle test running process.
S902: and determining the corresponding running state of the whole vehicle according to the running parameters of the whole vehicle.
S903: and determining a corresponding power supply strategy according to the running state of the whole vehicle, and setting a power source corresponding to the running state of the whole vehicle according to the power supply strategy.
S904: constructing the preset strategy data table in a database according to the corresponding relation formed among the whole vehicle running state, the power supply strategy and the power source
In the process of trial run by a worker, determining a corresponding running state of the whole vehicle in a database in advance according to running parameters of the whole vehicle in the process of trial run, then determining a corresponding power supply strategy according to the running state of the whole vehicle, and setting a power source corresponding to the running state of the whole vehicle according to the power supply strategy; and finally, constructing a preset strategy data table in a database according to the corresponding relation formed among the running state of the whole vehicle, the power supply strategy and the power source.
Referring to fig. 10, based on the multi-energy hybrid power control method of the fuel cell vehicle disclosed in the foregoing embodiment, the present embodiment correspondingly discloses a multi-energy hybrid power control apparatus of the fuel cell vehicle, which is applied to a multi-energy hybrid power control system of the fuel cell vehicle, and specifically, the apparatus includes: a first processing unit 1001, a second processing unit 1002, and a third processing unit 1003, wherein:
the first processing unit 1001 is configured to acquire a current vehicle control parameter, and determine a current vehicle running state according to the current vehicle control parameter.
The second processing unit 1002 is configured to search a preset policy data table for a power supply policy corresponding to a current operating state of the entire vehicle to determine a power source, and provide a power and energy requirement for the motor controller, where the power source includes a fuel cell, a power cell and a super capacitor, the preset policy data table stores a corresponding relationship between an operating state of the entire vehicle, the power supply policy and the power source, and the corresponding relationship between the operating state of the entire vehicle, the power supply policy and the power source at least includes: when the vehicle arrives or decelerates, the super capacitor preferentially feeds back the braking energy, and the fuel battery provides the power output of the whole vehicle.
And the third processing unit 1003 is configured to determine a finished vehicle control instruction according to the power source, and send the finished vehicle control instruction to the motor controller, so as to drive the motor to normally work.
Preferably, the corresponding relationship between the vehicle running state, the power supply strategy and the power source further includes:
when the vehicle starts, or the fuel cell is not started, the power cell provides the power output of the whole vehicle; under the normal running state of the vehicle, when the vehicle starts to accelerate, the super capacitor provides the power output of the whole vehicle; and under the normal running state of the vehicle, when high-power output is required to be continuously carried out, the fuel battery and the power battery provide the power output of the whole vehicle.
Preferably, the acquiring of the current vehicle control parameter and the determining of the current vehicle running state according to the current vehicle control parameter specifically include:
acquiring current vehicle control parameters, and calculating a vehicle running state index according to the current vehicle control parameters, wherein the vehicle running state index is used for identifying the vehicle running state;
when the running state index of the whole vehicle is in a first preset range, determining that the current running state of the whole vehicle is in a vehicle starting state or a fuel cell is not started;
when the whole vehicle running state index is in a second preset range, determining that the current whole vehicle running state is a vehicle normal running state, and starting and accelerating the vehicle;
when the whole vehicle running state index is in a third preset range, determining that the current whole vehicle running state is the vehicle arrival or deceleration;
and when the running state index of the whole vehicle is in a fourth preset range, determining that the current running state of the whole vehicle is in a normal running state of the vehicle and needs to be continuously output with high power.
Preferably, the second processing unit 1002 is further configured to:
acquiring corresponding vehicle running parameters under each vehicle running state in the vehicle test running process;
determining a corresponding vehicle running state according to the vehicle running parameters;
determining a corresponding power supply strategy according to the running state of the whole vehicle, and setting a power source corresponding to the running state of the whole vehicle according to the power supply strategy;
and constructing the preset strategy data table in a database according to the corresponding relation formed among the whole vehicle running state, the power supply strategy and the power source.
The embodiment of the application provides a fuel cell car multipotency source hybrid control device, is applied to fuel cell car multipotency source hybrid control system, when confirming that current whole car running state is that the vehicle is arrived at the station or is slowed down, preferentially by super capacitor repays braking energy to provide whole car power output by fuel cell, promptly: when the vehicle enters a station or decelerates, the whole vehicle is in a braking energy feedback state, preferably, super capacitor charging is carried out, when the super capacitor charging reaches a threshold value, the power battery is charged, and the charging and discharging times of the power battery are reduced by preferably charging the super capacitor, so that the service life of the power battery of the fuel battery and power battery hybrid vehicle is prolonged, and the cost of the fuel battery and power battery hybrid vehicle is further reduced.
The fuel cell vehicle multi-energy hybrid power control device comprises a processor and a memory, wherein the first processing unit, the second processing unit, the third processing unit and the like are stored in the memory as program units, and the processor executes the program units stored in the memory to realize corresponding functions.
The processor comprises a kernel, and the kernel calls the corresponding program unit from the memory. The kernel can be set to be one or more than one, when the current running state of the whole vehicle is determined to be the vehicle arrival or deceleration, the super capacitor is preferentially used for feeding back the braking energy, and the fuel cell is used for providing the power output of the whole vehicle, namely: when the vehicle enters a station or decelerates, the whole vehicle is in a braking energy feedback state, preferably, super capacitor charging is carried out, when the super capacitor charging reaches a threshold value, the power battery is charged, and the charging and discharging times of the power battery are reduced by preferably charging the super capacitor, so that the service life of the power battery of the fuel battery and power battery hybrid vehicle is prolonged, and the cost of the fuel battery and power battery hybrid vehicle is further reduced.
An embodiment of the present application further provides a multi-energy hybrid control system of a fuel cell vehicle, where the structure of the multi-energy hybrid control system of the fuel cell vehicle can be shown in fig. 1, and the multi-energy hybrid control system of the fuel cell vehicle includes: vehicle control unit 10, fuel cell vehicle multi-energy source hybrid power system 20 and motor controller 30, wherein:
the vehicle controller 10 is configured to obtain current vehicle control parameters, determine a current operating state of the vehicle according to the current vehicle control parameters, and send the current operating state of the vehicle to the multi-energy hybrid power system 20 of the fuel cell vehicle.
The multi-energy hybrid power system 20 of the fuel cell vehicle is configured to, when receiving a current running state of the entire vehicle, look up a corresponding power supply strategy from a preset strategy data table to determine a power source, provide a power and energy requirement for the entire vehicle for the motor controller 30, determine a control command for controlling the entire vehicle according to the power source, and send the control command to the motor controller 30.
The motor controller 30 is used for receiving a control instruction of the whole vehicle and driving the motor to work normally.
The embodiment of the application provides a multi-energy hybrid power control system of a fuel cell vehicle, when determining that the current running state of the whole vehicle is the vehicle arrival or deceleration, the super capacitor feeds back the braking energy preferentially, and the fuel cell provides the power output of the whole vehicle, namely: when the vehicle enters a station or decelerates, the whole vehicle is in a braking energy feedback state, preferably, super capacitor charging is carried out, when the super capacitor charging reaches a threshold value, the power battery is charged, and the charging and discharging times of the power battery are reduced by preferably charging the super capacitor, so that the service life of the power battery of the fuel battery and power battery hybrid vehicle is prolonged, and the cost of the fuel battery and power battery hybrid vehicle is further reduced.
An embodiment of the present application provides a storage medium having a program stored thereon, which when executed by a processor, implements the fuel cell vehicle multi-energy hybrid control method.
The embodiment of the application provides a processor, wherein the processor is used for running a program, and the program is used for executing the multi-energy hybrid power control method of the fuel cell vehicle during running.
An embodiment of the present application provides an electronic device, as shown in fig. 11, the electronic device 110 includes at least one processor 1101, and at least one memory 1102 and a bus 1103 connected to the processor; the processor 1101 and the memory 1102 complete communication with each other through the bus 1103; the processor 1101 is configured to call the program instructions in the memory 1102 to execute the reprinting method described above.
The electronic device herein may be a server, a PC, a PAD, a mobile phone, etc.
The present application further provides a computer program product adapted to perform a program for initializing the following method steps when executed on a data processing device:
acquiring current vehicle control parameters, and determining the current vehicle running state according to the current vehicle control parameters;
the method comprises the steps of searching a power supply strategy corresponding to the current running state of the whole vehicle from a preset strategy data table to determine a power source, and providing the power and energy requirements of the whole vehicle for a motor controller, wherein the power source comprises a fuel cell, a power cell and a super capacitor, the preset strategy data table stores the corresponding relation among the running state of the whole vehicle, the power supply strategy and the power source, and the corresponding relation among the running state of the whole vehicle, the power supply strategy and the power source at least comprises the following steps: when a vehicle arrives or decelerates, the super capacitor preferentially feeds back braking energy, and the fuel cell provides power output of the whole vehicle;
and determining a finished vehicle control command according to the power source, and sending the finished vehicle control command to the motor controller so as to drive the motor to normally work.
Preferably, the corresponding relationship between the vehicle running state, the power supply strategy and the power source further includes:
when the vehicle starts, or the fuel cell is not started, the power cell provides the power output of the whole vehicle; under the normal running state of the vehicle, when the vehicle starts to accelerate, the super capacitor provides the power output of the whole vehicle; and under the normal running state of the vehicle, when high-power output is required to be continuously carried out, the fuel battery and the power battery provide the power output of the whole vehicle.
Preferably, the acquiring of the current vehicle control parameter and the determining of the current vehicle running state according to the current vehicle control parameter specifically include:
acquiring current vehicle control parameters, and calculating a vehicle running state index according to the current vehicle control parameters, wherein the vehicle running state index is used for identifying the vehicle running state;
when the running state index of the whole vehicle is in a first preset range, determining that the current running state of the whole vehicle is in a vehicle starting state or a fuel cell is not started;
when the whole vehicle running state index is in a second preset range, determining that the current whole vehicle running state is a vehicle normal running state, and starting and accelerating the vehicle;
when the whole vehicle running state index is in a third preset range, determining that the current whole vehicle running state is the vehicle arrival or deceleration;
and when the running state index of the whole vehicle is in a fourth preset range, determining that the current running state of the whole vehicle is in a normal running state of the vehicle and needs to be continuously output with high power.
Preferably, the process for constructing the preset policy data table specifically includes:
acquiring corresponding vehicle running parameters under each vehicle running state in the vehicle test running process;
determining a corresponding vehicle running state according to the vehicle running parameters;
determining a corresponding power supply strategy according to the running state of the whole vehicle, and setting a power source corresponding to the running state of the whole vehicle according to the power supply strategy;
and constructing the preset strategy data table in a database according to the corresponding relation formed among the whole vehicle running state, the power supply strategy and the power source.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
In a typical configuration, a device includes one or more processors (CPUs), memory, and a bus. The device may also include input/output interfaces, network interfaces, and the like.
The memory may include volatile memory in a computer readable medium, Random Access Memory (RAM) and/or nonvolatile memory such as Read Only Memory (ROM) or flash memory (flash RAM), and the memory includes at least one memory chip. The memory is an example of a computer-readable medium.
Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), Digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The above are merely examples of the present application and are not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (10)
1. A multi-energy hybrid power control method of a fuel cell vehicle is characterized by being applied to a multi-energy hybrid power control system of the fuel cell vehicle, and the method comprises the following steps:
acquiring current vehicle control parameters, and determining the current vehicle running state according to the current vehicle control parameters;
the method comprises the steps of searching a power supply strategy corresponding to the current running state of the whole vehicle from a preset strategy data table to determine a power source, and providing the power and energy requirements of the whole vehicle for a motor controller, wherein the power source comprises a fuel cell, a power cell and a super capacitor, the preset strategy data table stores the corresponding relation among the running state of the whole vehicle, the power supply strategy and the power source, and the corresponding relation among the running state of the whole vehicle, the power supply strategy and the power source at least comprises the following steps: when a vehicle arrives or decelerates, the super capacitor preferentially feeds back braking energy, and the fuel cell provides power output of the whole vehicle;
and determining a finished vehicle control command according to the power source, and sending the finished vehicle control command to the motor controller so as to drive the motor to normally work.
2. The method of claim 1, wherein the correspondence between the vehicle operating state, the power supply strategy, and the power source further comprises:
when the vehicle starts, or the fuel cell is not started, the power cell provides the power output of the whole vehicle; under the normal running state of the vehicle, when the vehicle starts to accelerate, the super capacitor provides the power output of the whole vehicle; and under the normal running state of the vehicle, when high-power output is required to be continuously carried out, the fuel battery and the power battery provide the power output of the whole vehicle.
3. The method according to claim 2, wherein the obtaining of the current vehicle control parameter and the determining of the current vehicle running state according to the current vehicle control parameter are specifically:
acquiring current vehicle control parameters, and calculating a vehicle running state index according to the current vehicle control parameters, wherein the vehicle running state index is used for identifying the vehicle running state;
when the running state index of the whole vehicle is in a first preset range, determining that the current running state of the whole vehicle is in a vehicle starting state or a fuel cell is not started;
when the whole vehicle running state index is in a second preset range, determining that the current whole vehicle running state is a vehicle normal running state, and starting and accelerating the vehicle;
when the whole vehicle running state index is in a third preset range, determining that the current whole vehicle running state is the vehicle arrival or deceleration;
and when the running state index of the whole vehicle is in a fourth preset range, determining that the current running state of the whole vehicle is in a normal running state of the vehicle and needs to be continuously output with high power.
4. The method according to claim 1, wherein the process of constructing the preset policy data table specifically comprises:
acquiring corresponding vehicle running parameters under each vehicle running state in the vehicle test running process;
determining a corresponding vehicle running state according to the vehicle running parameters;
determining a corresponding power supply strategy according to the running state of the whole vehicle, and setting a power source corresponding to the running state of the whole vehicle according to the power supply strategy;
and constructing the preset strategy data table in a database according to the corresponding relation formed among the whole vehicle running state, the power supply strategy and the power source.
5. A multi-energy hybrid power control device of a fuel cell vehicle is applied to a multi-energy hybrid power control system of the fuel cell vehicle, and comprises the following components:
the first processing unit is used for acquiring current vehicle control parameters and determining the current vehicle running state according to the current vehicle control parameters;
the second processing unit is used for searching a power supply strategy corresponding to the current running state of the whole vehicle from a preset strategy data table to determine a power source and providing the power and energy requirements of the whole vehicle for the motor controller, wherein the power source comprises a fuel cell, a power cell and a super capacitor, the preset strategy data table stores the corresponding relation among the running state of the whole vehicle, the power supply strategy and the power source, and the corresponding relation among the running state of the whole vehicle, the power supply strategy and the power source at least comprises: when a vehicle arrives or decelerates, the super capacitor preferentially feeds back braking energy, and the fuel cell provides power output of the whole vehicle;
and the third processing unit is used for determining a finished vehicle control instruction according to the power source and sending the finished vehicle control instruction to the motor controller so as to drive the motor to normally work.
6. The apparatus of claim 5, wherein the correspondence between the vehicle operating state, the power supply strategy, and the power source further comprises:
when the vehicle starts, or the fuel cell is not started, the power cell provides the power output of the whole vehicle; under the normal running state of the vehicle, when the vehicle starts to accelerate, the super capacitor provides the power output of the whole vehicle; and under the normal running state of the vehicle, when high-power output is required to be continuously carried out, the fuel battery and the power battery provide the power output of the whole vehicle.
7. The method according to claim 6, wherein the obtaining of the current vehicle control parameter and the determining of the current vehicle running state according to the current vehicle control parameter are specifically:
acquiring current vehicle control parameters, and calculating a vehicle running state index according to the current vehicle control parameters, wherein the vehicle running state index is used for identifying the vehicle running state;
when the running state index of the whole vehicle is in a first preset range, determining that the current running state of the whole vehicle is in a vehicle starting state or a fuel cell is not started;
when the whole vehicle running state index is in a second preset range, determining that the current whole vehicle running state is a vehicle normal running state, and starting and accelerating the vehicle;
when the whole vehicle running state index is in a third preset range, determining that the current whole vehicle running state is the vehicle arrival or deceleration;
and when the running state index of the whole vehicle is in a fourth preset range, determining that the current running state of the whole vehicle is in a normal running state of the vehicle and needs to be continuously output with high power.
8. The method of claim 5, wherein the second processing unit is further specifically configured to:
acquiring corresponding vehicle running parameters under each vehicle running state in the vehicle test running process;
determining a corresponding vehicle running state according to the vehicle running parameters;
determining a corresponding power supply strategy according to the running state of the whole vehicle, and setting a power source corresponding to the running state of the whole vehicle according to the power supply strategy;
and constructing the preset strategy data table in a database according to the corresponding relation formed among the whole vehicle running state, the power supply strategy and the power source.
9. A storage medium characterized by comprising a stored program, wherein a device on which the storage medium is located is controlled to execute the fuel cell vehicle multi-energy hybrid control method according to any one of claims 1 to 4 when the program is executed.
10. An electronic device comprising at least one processor, and at least one memory, bus connected to the processor; the processor and the memory complete mutual communication through the bus; the processor is configured to invoke the program instructions in the memory to perform the fuel cell vehicle multi-energy hybrid control method of any of claims 1 to 4.
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