CN112078566A - Vehicle and method of controlling vehicle - Google Patents

Vehicle and method of controlling vehicle Download PDF

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Publication number
CN112078566A
CN112078566A CN202010813827.XA CN202010813827A CN112078566A CN 112078566 A CN112078566 A CN 112078566A CN 202010813827 A CN202010813827 A CN 202010813827A CN 112078566 A CN112078566 A CN 112078566A
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Prior art keywords
fuel cell
vehicle
power
modules
cell modules
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CN202010813827.XA
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Chinese (zh)
Inventor
曲迪
王超
魏长河
宋祎博
王枫
李丹
王慧
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Beiqi Foton Motor Co Ltd
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Beiqi Foton Motor Co Ltd
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Priority to CN202010813827.XA priority Critical patent/CN112078566A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/28—Conjoint control of vehicle sub-units of different type or different function including control of fuel cells
    • 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
    • B60L50/71—Arrangement of fuel cells within vehicles specially adapted for electric vehicles
    • 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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W40/00—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models
    • 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

Abstract

The present disclosure relates to a vehicle and a method for controlling the vehicle, wherein the vehicle comprises a plurality of fuel cell modules which are connected in parallel and have the same rated output power, and the rated output power and the required number of the fuel cell modules are determined according to a calculation model of the required power of the whole vehicle. Through the technical scheme, the high-power fuel cell engine can be realized by connecting the fuel cell modules mature in the prior art in parallel, the cost for researching and developing a single high-power fuel cell engine and the development cost of the whole vehicle are reduced, and the dynamic property and the economical efficiency of the whole vehicle are improved.

Description

Vehicle and method of controlling vehicle
Technical Field
The present disclosure relates to the field of vehicle technology, and in particular, to a vehicle mounted with a fuel cell and a method of controlling the vehicle.
Background
With the increasing demand for environmental protection and the strong promotion of national policies, vehicles equipped with fuel cell engines are becoming dominant models of vehicles operated in cities and between cities, for example, buses operated in cities and touring cars operated between cities. Such vehicle types often have a long vehicle body and a heavy service mass, and have certain requirements on working conditions such as acceleration and climbing, so that the demand on the rated output power of a fuel cell engine system is increased more and more.
The rated output power of the engine of the existing fuel cell with mature technology is basically between 30-80 kw, and the fuel cell with the rated output power more than 80kw is still in the primary stage or the planning of research and development. How to realize the rated power required by the whole vehicle through the fuel cell mature in the prior art and obtain a high-power fuel cell engine at the same time becomes a problem to be solved urgently.
Disclosure of Invention
A first object of the present disclosure is to provide a vehicle capable of achieving a high-power fuel cell engine while achieving a rated power required for the entire vehicle.
In order to achieve the above object, the present disclosure provides a vehicle including a plurality of fuel cell modules connected in parallel and having the same rated output, the rated output and the required number of the fuel cell modules being determined according to the following model:
Figure BDA0002631964330000011
wherein, P1Representing the required power (kw) of the whole vehicle at the highest vehicle speed; etatThe mechanical efficiency of the transmission system of the whole vehicle is represented; f represents a rolling resistance coefficient；vmaxRepresenting a designed target maximum vehicle speed; cdRepresenting a wind resistance coefficient; a represents the windward area of the whole vehicle; g represents the gravitational acceleration.
Optionally, the rated output power and the required number of the fuel cell modules are further determined according to the following model:
P＝max{P1,P2}+P3
wherein, P2Representing the required power (kw) corresponding to the requirement of meeting the climbing performance; p3Representing the required power corresponding to accessories in the driving process of the whole vehicle:
Figure BDA0002631964330000021
wherein, alpha represents the maximum climbing corresponding angle; v. ofaRepresenting the climbing vehicle speed (km/h).
Alternatively, the construction of each of the fuel cell modules is the same.
Optionally, the vehicle further comprises a plurality of heat dissipation system modules corresponding to the number of the fuel cell modules, each of the heat dissipation system modules has the same configuration, and the heat dissipation system power of the heat dissipation system modules is determined according to the following model:
Figure BDA0002631964330000022
wherein, PRRepresents the total generated power of the current fuel cell; η represents the current fuel cell efficiency; c represents the specific heat capacity of the unit fuel cell; m represents the mass of the unit fuel cell; n represents the number of membranes of the fuel cell system; Δ T represents the currently allowable fuel cell temperature rise; t represents the time taken to estimate the current fuel cell temperature rise Δ T.
Optionally, the vehicle further comprises a vehicle control unit and a fuel cell controller electrically connected with the vehicle control unit, each fuel cell module is electrically connected with the fuel cell controller, and the vehicle control unit is electrically connected with the vehicle driving system.
Optionally, the vehicle further comprises a high voltage power distribution device for collecting and distributing output from the plurality of fuel cell modules to the vehicle drive system.
Optionally, the vehicle further comprises a power battery connected with the high-voltage distribution device, and the power battery is electrically connected with the vehicle control unit.
A second object of the present disclosure is to provide a control method of a vehicle, the vehicle being the vehicle described above, the method including:
acquiring the total power requirement of the current vehicle operation condition;
proportionally outputting each fuel cell module according to the obtained total power requirement;
the output of each fuel cell module is applied to a drive system of the vehicle.
Optionally, after the obtaining the total power demand of the current vehicle operating condition, the method further comprises: the operating states of the respective fuel cell modules are transmitted to the vehicle.
Optionally, the step of scaling the output of each fuel cell module according to the obtained total power demand comprises: and controlling the fuel cell modules to output the same power.
According to the technical scheme, firstly, parameters are input according to the requirements of the whole vehicle to obtain the total power requirement of the vehicle; then selecting fuel cell modules with proper rated output power from the fuel cells mature in the prior art according to the total required power, and determining the number of the modules needing to be connected in parallel; and finally, connecting a plurality of battery modules in parallel. Therefore, a high-power fuel cell engine can be realized by connecting mature fuel cell modules in the prior art in parallel, the cost for researching and developing a single high-power fuel cell engine and the development cost of the whole vehicle are reduced, and the dynamic property and the economical efficiency of the whole vehicle are improved.
Additional features and advantages of the disclosure will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:
fig. 1 is a layout view of a vehicle mounted with a two-module fuel cell module according to an exemplary embodiment of the present disclosure;
fig. 2 is a schematic structural view of a fuel cell module provided in an exemplary embodiment of the present disclosure;
FIG. 3 is a rear view of the fuel cell module of FIG. 2;
FIG. 4 is a left side view of the fuel cell module of FIG. 2;
FIG. 5 is a right side view of the fuel cell module of FIG. 2;
fig. 6 is a schematic structural view of a heat dissipation system module provided in an exemplary embodiment of the present disclosure;
fig. 7 is a control logic diagram of a dual fuel battery module provided by an exemplary embodiment of the present disclosure;
FIG. 8 is a flowchart of a vehicle control method provided by an exemplary embodiment of the present disclosure;
FIG. 9 is a flowchart of another vehicle control method provided by an exemplary embodiment of the present disclosure.
Description of the reference numerals
1. A fuel cell module; 11. an FC cooling outlet; 12. an FC cooling inlet; 13. an auxiliary dispersion outlet; 14. an auxiliary dispersion inlet; 15. an air inlet; 16. a low-voltage plug-in connector; 17. water pump & hydrogen pump inverter electrical interface; 18. a tail discharge port; 19. a hydrogen inlet; 2. a heat dissipation system module; 21. a fan; 3. a fuel cell controller FCU; 4. a central controller C-ECU; 5. a vehicle control unit VCU; 6. a high voltage power distribution device; 7. a power battery BAT; 8. an electric drive controller; 9. the motor is driven.
Detailed Description
The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.
The integrated fuel cell engine mainly comprises: the system comprises a fuel cell stack, an air compressor controller, an intercooler, a humidifier, a hydrogen supply system, a hydrogen circulating pump, various sensors, a controller and the like. In order to ensure a large rated output power of the fuel cell engine, the following methods can be adopted: the sectional area of the proton exchange membrane is increased, the serial number of the membranes is increased, the reaction pressure and the reaction temperature in the reactor are improved, and the like. However, the fuel cell engine manufactured by adopting the method has larger volume, thereby occupying more space of the whole vehicle. In addition, as the reaction temperature and pressure are increased, higher requirements are placed on the quality and durability of the proton exchange membrane and the polar plate, thereby increasing the development cost and the maintenance cost. In addition, the power of the air compressor is increased, the technical requirements on the air compressor are improved, the research and development cost is increased, the mature high-power air compressor in the market has fewer choices, the cost is improved, and meanwhile the universality is reduced.
The present disclosure provides a vehicle comprising a plurality of fuel cell modules 1 connected in parallel and having the same rated output power, and the selection of the rated output power and the required number of the fuel cell modules 1 can be determined according to the following model:
Figure BDA0002631964330000051
wherein, P1Representing the required power (kw) of the whole vehicle at the highest vehicle speed; etatThe mechanical efficiency of the transmission system of the whole vehicle is represented; f represents a rolling resistance coefficient; v. ofmaxRepresenting a designed target maximum vehicle speed; cdRepresenting a wind resistance coefficient; a represents the windward area of the whole vehicle; g represents the gravitational acceleration.
When considering the requirements for climbing and accessories during driving, the rated output power and the required number of the fuel cell module 1 can be further determined according to the following model:
P＝max{P1,P2}+P3
wherein, P2Represents the required power (k) corresponding to the requirement of meeting the climbing performancew)；P3Representing the required power corresponding to accessories in the driving process of the whole vehicle:
Figure BDA0002631964330000052
wherein, alpha represents the maximum climbing corresponding angle; v. ofaRepresenting the climbing vehicle speed (km/h).
The following describes how to determine the rated output power and the required number of the fuel cell modules 1 according to the vehicle demand input parameters by an example, and further connect the plurality of fuel cell modules 1 in parallel to obtain a high-power fuel cell engine meeting the total power demand.
Before the rated output powers and the required numbers of the fuel cell modules 1 which need to be connected in parallel are determined for a vehicle, the total power demand of the vehicle is determined according to the whole vehicle demand input parameters and a total power demand model. The vehicle requirement input parameters of the vehicle are respectively assumed as follows: the whole vehicle has the service mass of 13.8t, the maximum total mass of 18t, the maximum vehicle speed of 100 ㎞/h and the climbing requirement of 25%. Parameters such as wind resistance and windward area belong to empirical parameters, and can be obtained by looking up a table according to different vehicle types. And inputting the whole vehicle demand input parameters into a total power demand model established according to an energy conservation principle, wherein an output result is the total power demand of the vehicle. The total power demand of the vehicle assumed above is finally obtained by calculation as 110 KW.
Next, a selection can be made among the fuel cell resources that are mature in the art, for example, an alternative fuel cell module can be a fuel cell module with 60KW or 80 KW. According to the principle of fully utilizing fuel cell resources and considering factors such as occupied space of fuel cell modules, a fuel cell system with the maximum rated output power of 120KW can be obtained by connecting two 60KW fuel cell modules 1 in parallel, and the requirement of total power requirement 110KW required by the vehicle, which is obtained according to the whole vehicle requirement input parameters, is met. It was finally determined that two 60KW fuel cell modules were used in parallel in a vehicle with this particular vehicle demand input parameter.
According to the technical scheme, firstly, parameters are input according to the requirements of the whole vehicle to obtain the total power requirement of the vehicle; then selecting fuel cell modules 1 with proper rated output power from the existing fuel cells mature in the prior art according to the total required power, and determining the number of the fuel cell modules 1 which need to be connected in parallel; finally, a plurality of fuel cell modules 1 are connected in parallel. Therefore, a high-power fuel cell engine can be realized by connecting mature fuel cell modules in the prior art in parallel, the cost for researching and developing a single high-power fuel cell engine and the development cost of the whole vehicle are reduced, and the dynamic property and the economical efficiency of the whole vehicle are improved.
Compared with the above-mentioned method, for example, by increasing the cross-sectional area of the proton exchange membrane, increasing the number of the membrane series, and increasing the reaction pressure and the reaction temperature in the stack, the resulting single fuel cell engine is too large, thereby occupying more space in the whole vehicle. According to the vehicle disclosed by the invention, the fuel cell with higher power can be obtained by connecting the fuel cell modules with lower power in parallel, so that the space utilization rate of the vehicle is improved, and the arrangement of the fuel cell with lower power is more flexible, so that the difficulty of the whole vehicle space arrangement of the fuel cell system is reduced. For example, in an arrangement diagram of a vehicle mounted with a two-module fuel cell module shown in fig. 1, two fuel cell modules 1 are arranged in a stacked manner at the rear of the vehicle. In addition, the vehicle is also provided with modules such as a driving motor 8, a power battery 7, a hydrogen cylinder group and the like, the modules need to be comprehensively considered together with the fuel cell module 1 from the aspects of space layout, whole vehicle weight distribution, pipeline trend and the like, and the most reasonable arrangement mode is adopted according to different vehicle types.
At present, fuel cell product development systems on the market are various, and the size, structure, gateway, electrical topology and the like of hardware are not completely unified, so that the universality and interchangeability of the fuel cell module 1 are poor. To solve this technical problem, according to one embodiment of the present disclosure, the configuration of each fuel cell module 1 is the same. The same structure of the fuel cell modules 1 means that the arrangement structure, the installation and positioning size, the gas-liquid electrical interface position, the functional tube angle definition and the like of the fuel cell engine are the same, namely, the fuel cell modules 1 are made into standard modules so as to be assembled in a modularized mode according to the total required power of a vehicle. And when some fuel cell modules 1 have problems, the modules can be quickly replaced, so that the use efficiency is improved and the use experience of users is improved in a modularized, universal and interchangeable use mode.
For example, fig. 2 to 5 show a fuel cell module 1 in which the installation positions and installation dimensions of the FC cooling outlet 11, FC cooling inlet 12, auxiliary diffusion outlet 13, auxiliary diffusion inlet 14, air inlet 15, low-pressure plug 16, water pump & hydrogen pump inverter electrical interface 17, exhaust outlet 18, hydrogen inlet 19, and other components of the fuel cell module 1 are all solidified, thereby improving the versatility of the fuel cell module 1.
According to one embodiment of the present disclosure, the vehicle further includes a plurality of heat dissipation system modules 2 corresponding to the number of the fuel cell modules 1, the heat dissipation system modules 2 being provided with fans 21 for dissipating heat. The structure of each cooling system module 2 is the same, and the cooling system power of the cooling system module 2 can be determined according to each power point of the fuel cell module:
Figure BDA0002631964330000071
wherein, PRRepresents the total generated power of the current fuel cell; η represents the current fuel cell efficiency; c represents the specific heat capacity of the unit fuel cell; m represents the mass of the unit fuel cell; n represents the number of membranes of the fuel cell system; Δ T represents the currently allowable fuel cell temperature rise; t represents the time taken to estimate the current fuel cell temperature rise Δ T.
In the embodiment shown in fig. 1, the heat dissipation system module 2 is arranged at the roof portion. It should be understood that the arrangement of the heat dissipation system module 2 may also be considered comprehensively according to the space layout of the whole vehicle, the weight distribution of the whole vehicle, and the pipeline direction. The output power of the heat dissipation system module 2 is determined according to each power point of the fuel cell module. Further, the configuration of each heat dissipation system module 2 is the same. The same structure of the heat dissipation system modules 2 means that the arrangement structure, the installation positioning size, the hydraulic-electric interface position, the functional tube angle definition and the like are the same, that is, the heat dissipation system modules 2 are made into standard modules so as to be capable of performing modularized assembly according to the heat dissipation requirement of the fuel cell module 1, and when the heat dissipation system modules 2 in the middle of the heat dissipation system modules are in trouble, the modules in the parts can be rapidly replaced, so that the use efficiency is improved and the use experience of users is improved in a modularized, universal and interchangeable use mode.
The vehicle of the present disclosure further includes a vehicle control unit 5(VCU), and a fuel cell controller 3(FCU) electrically connected to the vehicle control unit 5, and each fuel cell module 1 is electrically connected to the fuel cell controller 3, respectively, i.e. the fuel cell module 1, the fuel cell controller 3 and the vehicle control unit 5 constitute a fuel cell control system. Fig. 7 shows a control logic diagram in which a dual fuel cell module 1 is mounted, wherein a fuel cell controller 3 is integrated in each fuel cell module 1. The two parallel fuel cell modules 1 are respectively and electrically connected with a central controller 4(C-ECU) through CAN1 internal buses, the central controller 4 is electrically connected with a vehicle control unit 5 through a main CAN line, the vehicle control unit 5 is further connected with a driving system of a vehicle, and finally the energy of the fuel cell CAN be output to the driving system. The drive system here comprises a wheel, a drive motor 9 for driving the wheel in motion, and an electric drive controller 8 electrically connected to the drive motor.
As shown in fig. 8, the present disclosure also provides a method of controlling a vehicle, and in particular, a method of controlling outputs of a plurality of fuel cell modules 1 connected in parallel to drive a vehicle. The method comprises the following steps: s1, acquiring the total power requirement of the current vehicle operation condition; s3 scaling each fuel cell module based on the total power demand achieved; s4 applies the output of each fuel cell module to the drive system of the vehicle. Specifically, the fuel cell controllers 3 integrated in the fuel cell modules 1 collect technical parameters (such as voltage, current, and temperature) in the corresponding cell stacks respectively and transmit data to the central controller 4 through the CAN1 internal bus, and meanwhile, the central controller 4 interacts with the entire vehicle through the CAN main line. The vehicle control unit 5 can obtain the total power requirement of the current vehicle operating condition, and the obtaining process is a dynamic process, that is, the current total power requirement of the vehicle can be obtained and calculated in real time according to the vehicle operating condition. The central controller 4 then calculates the total power demand to be distributed to the individual fuel cell modules 1.
Alternatively, the total power demand can be distributed evenly to the fuel cell modules 1, that is to say such that the fuel cell modules 1 output the same power (equalized output). For example, when the total power demand of the vehicle is 110KW, two 60KW fuel cell modules can be made to output 55KW each. This makes it easier to logically implement a plurality of fuel cell modules 1 in the same power output manner, and reduces the difficulty of programming. The fuel cell controller 3 receives the total power demand command and controls the output of the fuel cell module 1 to drive the vehicle.
As shown in FIG. 9, after obtaining the total power demand for the current vehicle operating conditions, the method of controlling the vehicle further comprises: s2 transmits the operating state of each fuel cell module to the vehicle. The operation state of the fuel cell module 1 includes inherent information, failure information, operation conditions, and the like of the fuel cell module 1. On one hand, the whole vehicle calculates and averagely distributes the total required power to the fuel cell module 1 through the central controller 4, and simultaneously feeds back the inherent information, the fault information, the running condition and the like of the fuel cell module 1 to the whole vehicle to form a closed loop of data transmission and information. And the information is fed back to the whole vehicle, so that the whole vehicle can monitor the running state of the fuel cell module 1 in real time, for example, when the fuel cell module 1 breaks down, the fuel cell module 1 which breaks down can be cut off and isolated in time.
According to one embodiment of the present disclosure, as shown in fig. 4, the vehicle further includes a high voltage power distribution device 6 for collecting and distributing the outputs from the plurality of fuel cell modules 1 to the vehicle drive system. In particular, the high voltage power distribution device 6 is electrically connected to an electrically driven controller 8. That is, the power output from the plurality of fuel cell modules 1 is first concentrated into the high voltage distribution device 6, and then the collected energy is uniformly distributed to the drive system by the high voltage distribution device 6 according to the total required power of the vehicle. Further, the vehicle also comprises a power battery 7(BAT) connected with the high-voltage distribution device 6, and the power battery 7 is electrically connected with the vehicle control unit 5. Due to the inherent disadvantages of the prior art fuel cell, the fuel cell cannot be instantly increased to the required output power, which results in insufficient driving force of the vehicle, and the power cell 7 supplies power to the high voltage distribution device 6, so that the driving system can obtain the required energy in a short time.
The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.
It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, various possible combinations will not be separately described in this disclosure.
In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.

Claims (10)

1. A vehicle comprising a plurality of fuel cell modules of the same rated output connected in parallel, the rated output and the required number of the fuel cell modules being determined according to the following model:
Figure FDA0002631964320000011
wherein, P1At the time of indicating the maximum vehicle speedThe power demand of the whole vehicle; etatThe mechanical efficiency of the transmission system of the whole vehicle is represented; f represents a rolling resistance coefficient; v. ofmaxRepresenting a designed target maximum vehicle speed; cdRepresenting a wind resistance coefficient; a represents the windward area of the whole vehicle; g represents the gravitational acceleration.
2. The vehicle according to claim 1, characterized in that the rated output power of the fuel cell module and the required number are further determined according to the following model:
P＝max{P1,P2}+P3
wherein, P2Representing the required power corresponding to the requirement of meeting the climbing performance; p3Representing the required power corresponding to accessories in the driving process of the whole vehicle:
Figure FDA0002631964320000012
wherein, alpha represents the maximum climbing corresponding angle; v. ofaIndicating the speed of the hill climbing vehicle.
3. The vehicle of claim 1, characterized in that the construction of each of the fuel cell modules is identical.
4. The vehicle of claim 3, further comprising a plurality of heat dissipation system modules corresponding to the number of fuel cell modules, each of the heat dissipation system modules being identically constructed, the heat dissipation system power of the heat dissipation system modules being determined according to the following model:
Figure FDA0002631964320000021
wherein, PRRepresents the total generated power of the current fuel cell; η represents the current fuel cell efficiency; c represents the specific heat capacity of the unit fuel cell; m represents the mass of the unit fuel cell; n represents fuelThe number of membranes of the fuel cell system; Δ T represents the currently allowable fuel cell temperature rise; t represents the time taken to estimate the current fuel cell temperature rise Δ T.
5. The vehicle of any one of claims 1-4, further comprising a vehicle control unit and a fuel cell controller electrically connected to the vehicle control unit, each of the fuel cell modules being electrically connected to the fuel cell controller, respectively, the vehicle control unit being electrically connected to a vehicle drive system.
6. The vehicle of claim 5, further comprising a high voltage power distribution device for collecting and distributing output from a plurality of fuel cell modules to the vehicle drive system.
7. The vehicle of claim 6, further comprising a power battery connected with the high-voltage distribution device, the power battery being electrically connected with the vehicle control unit.
8. A vehicle control method characterized in that the vehicle is the vehicle according to any one of claims 1 to 7, the method comprising:
acquiring the total power requirement of the current vehicle operation condition;
proportionally outputting each fuel cell module according to the obtained total power requirement;
the output of each fuel cell module is applied to a drive system of the vehicle.
9. The control method of claim 8, wherein after said deriving the total power demand for the current vehicle operating conditions, the method further comprises: the operating states of the respective fuel cell modules are transmitted to the vehicle.
10. The control method of claim 8, wherein said step of scaling each fuel cell module according to the total power demand achieved comprises: and controlling the fuel cell modules to output the same power.
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