CN110654250A - Blower system for fuel cell electric vehicle, control method and device - Google Patents
Blower system for fuel cell electric vehicle, control method and device Download PDFInfo
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- CN110654250A CN110654250A CN201910945595.0A CN201910945595A CN110654250A CN 110654250 A CN110654250 A CN 110654250A CN 201910945595 A CN201910945595 A CN 201910945595A CN 110654250 A CN110654250 A CN 110654250A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
- H01M8/04746—Pressure; Flow
- H01M8/04753—Pressure; Flow of fuel cell reactants
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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
- B60L50/70—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by 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
- B60L1/00—Supplying electric power to auxiliary equipment of vehicles
- B60L1/003—Supplying electric power to auxiliary equipment of vehicles to auxiliary motors, e.g. for pumps, compressors
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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
- B60L1/00—Supplying electric power to auxiliary equipment of vehicles
- B60L1/02—Supplying electric power to auxiliary equipment of vehicles to electric heating circuits
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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
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
- B60L3/0053—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to 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
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0092—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption with use of redundant elements for safety purposes
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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
- B60L58/32—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling fuel cells for controlling the temperature of fuel cells, e.g. by controlling the electric load
- B60L58/33—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling fuel cells for controlling the temperature of fuel cells, e.g. by controlling the electric load by cooling
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04089—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04089—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants
- H01M8/04104—Regulation of differential pressures
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
- H01M8/0438—Pressure; Ambient pressure; Flow
- H01M8/04395—Pressure; Ambient pressure; Flow of cathode reactants at the inlet or inside the fuel cell
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
- H01M8/0438—Pressure; Ambient pressure; Flow
- H01M8/0441—Pressure; Ambient pressure; Flow of cathode exhausts
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
- H01M8/0438—Pressure; Ambient pressure; Flow
- H01M8/04425—Pressure; Ambient pressure; Flow at auxiliary devices, e.g. reformers, compressors, burners
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
- H01M8/0438—Pressure; Ambient pressure; Flow
- H01M8/04432—Pressure differences, e.g. between anode and cathode
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
- H01M8/04858—Electric variables
- H01M8/04925—Power, energy, capacity or load
- H01M8/04947—Power, energy, capacity or load of auxiliary devices, e.g. batteries, capacitors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2250/00—Fuel cells for particular applications; Specific features of fuel cell system
- H01M2250/20—Fuel cells in motive systems, e.g. vehicle, ship, plane
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
- H01M8/04664—Failure or abnormal function
- H01M8/04686—Failure or abnormal function of auxiliary devices, e.g. batteries, capacitors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—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
- 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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- Manufacturing & Machinery (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Fuel Cell (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The application provides a blower system, a control method and a device for a fuel cell electric vehicle, which comprise the following steps: power battery, heterogeneous machine controller, fuel cell controller FCU, contain at least two sets of three-phase winding's motor, air-blower pump head and pile module, fuel cell controller FCU carries out frequency conversion control to heterogeneous machine controller and adjusts, controls each group's three-phase winding output torque and rotational speed that corresponds, in order to drive the air-blower pump head is rotatory, forms the air negative pressure at the input of pile module, provides the air for the fuel cell cathode side of pile module, guarantees the normal operating of pile module. Through the system that this application provided, when certain a set of three-phase winding breaks down, other three-phase windings still can realize whole car work, when effectively avoiding air-blower system to break down, cause the galvanic pile reaction to become invalid easily, cause the serious fault that the galvanic pile damaged even to system security performance has been improved.
Description
Technical Field
The application relates to the technical field of electric vehicle control, in particular to a blower system for a fuel cell electric vehicle, a control method and a device.
Background
An existing blower system for a fuel cell vehicle is mainly provided with a direct current brushless motor or a three-phase permanent magnet synchronous motor for driving a blower pump head as shown in fig. 1, and if a motor or a controller of the motor for the blower pump head breaks down, a reactor reaction fails, and the reactor is damaged in serious cases, so that the safety performance of the system is reduced.
Disclosure of Invention
The application provides a blower system, a control method and a device for a fuel cell electric vehicle, and aims to solve the problems that in the prior art, if a motor for a blower pump head or a controller of the motor breaks down, a galvanic pile reaction fails, and the galvanic pile is damaged in serious conditions, so that the safety performance of the system is reduced.
In order to achieve the above object, the present application provides the following technical solutions:
a blower system for a fuel cell electric vehicle, comprising: power battery, machine controller, fuel cell controller FCU, motor, air-blower pump head and pile module, machine controller is heterogeneous machine controller, the motor is the motor that contains at least two sets of three-phase winding, wherein:
the direct-current bus end of the multi-phase motor controller is connected with the output end of the power battery, the alternating-current output end of the multi-phase motor controller is connected with the stator winding of each group of the three-phase windings, and the rotor winding of each group of the three-phase windings is connected with the pump head of the air blower through an output shaft;
the fuel cell controller FCU carries out frequency conversion control and regulation on the multiphase motor controller, controls each group of three-phase windings to output corresponding torque and rotating speed so as to drive the air blower pump head to rotate, and air negative pressure is formed at the input end of the electric pile module to provide air for the cathode side of the fuel cell of the electric pile module.
Preferably, the multiphase motor controller and the multiphase motor are six-phase, nine-phase, twelve-phase or fifteen-phase.
Preferably, the blower system for a fuel cell electric vehicle further includes:
the mass flow sensor is arranged between an air outlet end of the blower pump head and an input end of the pile module, and is used for acquiring an air mass flow signal at the outlet end of the blower pump head;
the pressure difference sensor is arranged between the air outlet end of the air blower pump head and the output end of the galvanic pile module and used for collecting pressure difference signals of the air outlet end and the air inlet end of the galvanic pile module.
A blower control method for a fuel cell electric vehicle, which is applied to the blower system for a fuel cell electric vehicle described above, the blower system for a fuel cell electric vehicle comprising: the system comprises a power battery, a multiphase motor controller, a fuel cell controller (FCU), a motor comprising at least two groups of three-phase windings, a blower pump head, a pile module, a mass flow sensor and a differential pressure sensor, and the method comprises the following steps:
acquiring an air mass flow signal at the outlet end of the pump head of the air blower, which is acquired by the air mass flow signal sensor;
acquiring differential pressure signals of an air outlet end and an air inlet end of the galvanic pile module, which are acquired by the differential pressure sensor;
and the fuel cell controller FCU controls the running state of the air blower pump head according to the air mass flow signal and the pressure difference signal to realize closed-loop control.
Preferably, the fuel cell controller FCU controls the operating state of the blower pump head according to the air mass flow signal and the pressure difference signal, so as to implement closed-loop control, specifically:
calculating the actual output power of the pump head of the air blower according to a preset coefficient, the air mass flow signal and the pressure difference signal;
and adjusting the torque and the rotating speed output by each group of the three-phase windings through closed-loop control according to the difference value of the actual output power of the air blower pump head and the required output power of the air blower pump head so as to control the running state of the air blower pump head.
A fuel cell comprising the blower system for a fuel cell electric vehicle described above.
A fuel cell system comprises the fuel cell.
A fuel cell electric vehicle comprises the fuel cell system.
The application discloses a blower system, a control method and a device for a fuel cell electric vehicle, wherein the system comprises: power battery, heterogeneous motor controller, fuel cell controller FCU, contain at least two sets of three-phase winding's motor, air-blower pump head and pile module, wherein: the direct current bus end of the multi-phase motor controller is connected with the output end of the power battery, the alternating current output end of the multi-phase motor controller is connected with the stator winding of each group of three-phase windings, and the rotor winding of each group of three-phase windings is connected with the pump head of the air blower through an output shaft; the fuel cell controller FCU carries out frequency conversion control to multiphase motor controller and adjusts, controls each group of three-phase winding output corresponding moment of torsion and rotational speed to it is rotatory to drive the air-blower pump head, forms the air negative pressure at the input of pile module, provides the air for the fuel cell cathode side of pile module, guarantees the normal operating of pile module.
This application adopts heterogeneous motor, the torque moment and the rotational speed that each group of three-phase winding output of cooperation heterogeneous machine controller control corresponds, it is rotatory with the drive air-blower pump head, form the air negative pressure at the input of pile module, fuel cell cathode side for the pile module provides the air, guarantee the normal operating of pile module, when wherein a certain set of three-phase winding breaks down, other three-phase winding still can realize whole car work, effectively avoid when the air-blower system breaks down for the fuel cell electric automobile, cause pile reaction failure easily, cause the serious fault that the pile damaged even, thereby system security performance has been improved.
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 blower system for a fuel cell electric vehicle provided in the prior art;
FIG. 2 is a schematic structural diagram of a blower system for a fuel cell electric vehicle according to the present disclosure;
FIG. 3 is a schematic structural view of another blower system for a fuel cell electric vehicle according to the present disclosure;
FIG. 4 is a schematic diagram of a high-voltage loop of a six-phase motor controller as provided herein;
fig. 5 is a flowchart of a method for controlling a blower for a fuel cell electric vehicle according to the present application.
Detailed Description
The application provides a blower system, a control method and a device for a fuel cell electric vehicle, which are used for forming air negative pressure through the rotation of a blower pump head, providing air with certain flow and pressure for the cathode side of a fuel cell,
the application provides a blower system, a control method and a device for a fuel cell electric vehicle, which aims to: the problem of if fan pump motor for the pump head or its controller break down among the prior art, can cause the galvanic pile reaction to become invalid, can cause the galvanic pile to damage when serious is solved.
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.
In the embodiment of the application, a six-phase motor blower system is taken as an example to explain system components, and each three phase is set as a group of three-phase windings, so that the six-phase motor blower system is equivalent to a motor comprising two groups of three-phase windings, and the rest is analogized in sequence, such as a nine-phase, twelve-phase and fifteen-phase blower systems, which are equivalent to a motor comprising three groups of three-phase windings, a motor comprising four groups of three-phase windings or a motor comprising five groups of three-phase windings.
As shown in fig. 2, an embodiment of the present application provides a blower system for a fuel cell electric vehicle, specifically including: a power cell 1, a six-phase motor controller 2, a fuel cell controller fcu (fuel cell Control unit)3, a six-phase motor 4, a blower pump head 5, and a stack module 6, wherein:
the power battery 1 serves as an energy storage device to provide system energy. As shown in fig. 2, a dc bus terminal of the six-phase motor controller 2 is connected to an output terminal of the power battery 1, an ac output terminal of the six-phase motor controller 2 is connected to a stator winding of the six-phase motor 4, and a rotor winding of the six-phase motor 4 is connected to the blower pump head 5 through an output shaft; the fuel cell controller FCU3 is right six phase machine controller carries out frequency conversion control and adjusts, controls each group the corresponding moment of torsion and rotational speed of three-phase winding output to the drive air-blower pump head 5 is rotatory, form the air negative pressure at the input of pile module, for pile module 6's fuel cell cathode side provides the air, guarantees pile module's normal operating.
In the embodiment of the present application, the six-phase motor controller 2 outputs three phases U1, V1, W1 and three phases U2, V2, W2 to two sets of three-phase windings in the corresponding six-phase motor 4, wherein the three phases U1, V1, and W1, and the three phases U2, V2, and W2 constitute independent three-phase windings, respectively, without affecting each other. It should be noted that the six-phase motor can be regarded as two groups of three-phase windings to independently apply excitation to the same rotor.
The cell stack module 6 comprises a cell stack, a heat exchanger, a reformer, a steam generator, a burner and other components, and generates electrochemical reaction and outputs current by controlling the entering air, fuel gas and water.
Fig. 3 is a schematic diagram of a high-voltage circuit of a six-phase motor controller. As described in detail with reference to fig. 2, the input terminal of the dc bus is connected to the main capacitor C, and functions as: can stabilize input voltage and filter AC component. The embodiment of the application adopts two sets of independent three-phase contravariant high-voltage circuit and two sets of three-phase windings to link to each other, can reduce the line current of motor, has effectively reduced and has burnt the group heat effect, has reduced system cooling demand. Meanwhile, the system has a better redundancy protection effect, and if one group of three-phase inversion high-voltage circuits or three-phase windings have faults, the other group of three-phase inversion high-voltage circuits or three-phase windings are not influenced. Namely: the embodiment of the application provides a fuel cell air-blower system for electric automobile, adopt the motor drive air-blower pump head of at least two sets of three-phase winding, cooperation polyphase machine controller, better system redundancy has, when certain a set of three-phase winding breaks down, other three-phase winding still can realize whole car work, when effectively avoiding air-blower system to break down, cause the galvanic pile reaction to become invalid easily, cause the serious fault that the galvanic pile damaged even to system security performance has been improved.
Further, in addition to the blower system for a fuel cell electric vehicle disclosed above, as shown in fig. 4, the blower system for a fuel cell electric vehicle disclosed above may further include:
the mass flow sensor 7 is arranged between an air outlet end of the blower pump head 5 and an input end of the pile module 6, and the mass flow sensor 7 is used for acquiring an air mass flow signal at the outlet end of the blower pump head 5; the pressure difference sensor 8 is arranged between the air outlet end of the air blower pump head 5 and the output end of the electric pile module 6, and the pressure difference sensor 8 is used for collecting pressure difference signals of the air outlet end and the air inlet end of the electric pile module 6.
By providing the mass flow sensor 7 and the differential pressure sensor 8, the fuel cell controller FCU3 obtains the air mass flow signal collected by the mass flow sensor 7 and the differential pressure signal collected by the differential pressure sensor 8, and can accurately determine the operating state of the blower system.
The application also discloses a blower control method for the fuel cell electric vehicle on the basis of the blower system for the fuel cell electric vehicle.
As shown in fig. 5, an embodiment of the present application provides a flowchart of a method for controlling a blower for a fuel cell electric vehicle, which is applied to the blower system for a fuel cell electric vehicle shown in fig. 4, and the blower system for a fuel cell electric vehicle includes: the method comprises the following steps of:
s501: and acquiring an air mass flow signal at the outlet end of the air blower pump head acquired by the air mass flow signal.
S502: and acquiring differential pressure signals of an air outlet end and an air inlet end of the galvanic pile module, which are acquired by the differential pressure sensor.
S503: and the fuel cell controller FCU controls the running state of the air blower pump head according to the air mass flow signal and the pressure difference signal to realize closed-loop control.
In this embodiment of the application, the fuel cell controller FCU controls the operating state of the blower pump head according to the air mass flow signal and the pressure difference signal, so as to implement closed-loop control, specifically:
and calculating the actual output power of the pump head of the air blower according to a preset coefficient, the air mass flow signal and the pressure difference signal.
The actual output power of the air blower pump head is equal to a preset coefficient multiplied by an air mass flow signal multiplied by a differential pressure signal, wherein the preset coefficient is a constant, the air mass flow signal is acquired by an air mass flow signal, and the differential pressure signal is acquired by a differential pressure sensor.
And adjusting the torque and the rotating speed output by the multiphase motor through closed-loop control according to the difference value of the actual output power of the air blower pump head and the required output power of the air blower pump head so as to control the running state of the air blower pump head. .
In the embodiment of the application, the mass flow sensor and the differential pressure sensor are arranged in the blower system for the fuel cell electric vehicle, and the fuel cell controller FCU3 acquires the air mass flow signal acquired by the mass flow sensor and the differential pressure signal acquired by the differential pressure sensor, so that the running state of the blower system can be accurately judged. Meanwhile, the running state of each group of three-phase windings can be adjusted in real time according to the load requirement of the air blower, the motor comprising at least two groups of three-phase windings can better meet the requirements of low load, medium load and high load, and simultaneously the current and the frequency of each group of three-phase windings can be adjusted to control the torque and the rotating speed output of each three-phase winding, so that the air blower runs in different running states, the comprehensive running efficiency of the air blower is the highest, and the comprehensive efficiency of a fuel cell system is improved.
The embodiment of the application also discloses a fuel cell which comprises the blower system for the fuel cell electric automobile, besides the blower system for the fuel cell electric automobile disclosed above.
Further, the embodiment of the application also discloses a fuel cell system, and the fuel cell system comprises the fuel cell.
Further, the embodiment of the application also discloses a fuel cell electric automobile which comprises the fuel cell system.
It should be noted that in the embodiment of the present application, a multiphase motor is adopted to integrate with a pump head of an air blower, and a multiphase motor controller is used to control each group of three-phase windings to be in different operating states, so as to meet different operating conditions of high power for starting a fuel cell, medium power in rated operation, low power in standby mode, and the like, and to enable the air blower to operate in each operating condition with the highest efficiency.
The embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same or similar parts among the embodiments are referred to each other.
It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that an 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 article or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in an article or device that comprises the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. A blower system for a fuel cell electric vehicle, comprising: power battery, machine controller, fuel cell controller FCU, motor, air-blower pump head and pile module, its characterized in that, machine controller is heterogeneous machine controller, the motor is the motor that contains at least two sets of three-phase winding, wherein:
the direct-current bus end of the multi-phase motor controller is connected with the output end of the power battery, the alternating-current output end of the multi-phase motor controller is connected with the stator winding of each group of the three-phase windings, and the rotor winding of each group of the three-phase windings is connected with the pump head of the air blower through an output shaft;
the fuel cell controller FCU carries out frequency conversion control and regulation on the multiphase motor controller, controls each group of three-phase windings to output corresponding torque and rotating speed so as to drive the air blower pump head to rotate, and air negative pressure is formed at the input end of the electric pile module to provide air for the cathode side of the fuel cell of the electric pile module.
2. The system of claim 1 wherein the multi-phase motor controller and the multi-phase motor are six-phase, nine-phase, twelve-phase, or fifteen-phase.
3. The system of any of claims 1-2, further comprising:
the mass flow sensor is arranged between an air outlet end of the blower pump head and an input end of the pile module, and is used for acquiring an air mass flow signal at the outlet end of the blower pump head;
the pressure difference sensor is arranged between the air outlet end of the air blower pump head and the output end of the galvanic pile module and used for collecting pressure difference signals of the air outlet end and the air inlet end of the galvanic pile module.
4. A blower control method for a fuel cell electric vehicle, which is applied to the blower system for a fuel cell electric vehicle according to claim 3, the blower system for a fuel cell electric vehicle comprising: the system comprises a power battery, a multiphase motor controller, a fuel cell controller (FCU), a motor containing at least two groups of three phases, a blower pump head, a pile module, a mass flow sensor and a differential pressure sensor, and the method comprises the following steps:
acquiring an air mass flow signal at the outlet end of the pump head of the air blower, which is acquired by the air mass flow signal sensor;
acquiring differential pressure signals of an air outlet end and an air inlet end of the galvanic pile module, which are acquired by the differential pressure sensor;
and the fuel cell controller FCU controls the running state of the air blower pump head according to the air mass flow signal and the pressure difference signal to realize closed-loop control.
5. The method according to claim 4, wherein said fuel cell controller FCU controls the operating state of said blower pump head according to said mass air flow signal and said pressure difference signal, implementing a closed-loop control, in particular:
calculating the actual output power of the pump head of the air blower according to a preset coefficient, the air mass flow signal and the pressure difference signal;
and adjusting the torque and the rotating speed output by each group of the three-phase windings through closed-loop control according to the difference value of the actual output power of the air blower pump head and the required output power of the air blower pump head so as to control the running state of the air blower pump head.
6. A fuel cell comprising the blower system for a fuel cell electric vehicle according to any one of claims 1 to 3.
7. A fuel cell system comprising the fuel cell according to claim 6.
8. A fuel cell electric vehicle comprising the fuel cell system according to claim 7.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910945595.0A CN110654250A (en) | 2019-09-30 | 2019-09-30 | Blower system for fuel cell electric vehicle, control method and device |
| PCT/IB2020/059152 WO2021064595A1 (en) | 2019-09-30 | 2020-09-30 | Air blower system for fuel cell electric vehicle, control method and device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910945595.0A CN110654250A (en) | 2019-09-30 | 2019-09-30 | Blower system for fuel cell electric vehicle, control method and device |
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| CN110654250A true CN110654250A (en) | 2020-01-07 |
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| CN201910945595.0A Pending CN110654250A (en) | 2019-09-30 | 2019-09-30 | Blower system for fuel cell electric vehicle, control method and device |
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| WO (1) | WO2021064595A1 (en) |
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