CN109342081A - A kind of fuel cell car power-driven system test platform - Google Patents

A kind of fuel cell car power-driven system test platform Download PDF

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Publication number
CN109342081A
CN109342081A CN201811280468.5A CN201811280468A CN109342081A CN 109342081 A CN109342081 A CN 109342081A CN 201811280468 A CN201811280468 A CN 201811280468A CN 109342081 A CN109342081 A CN 109342081A
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CN
China
Prior art keywords
fuel cell
board
power
motor
controller
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201811280468.5A
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Chinese (zh)
Inventor
陈华明
郝义国
王俊杰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuhan Grove Hydrogen Automobile Co Ltd
Wuhan Grove Hydrogen Energy Automobile Co Ltd
Original Assignee
Wuhan Grove Hydrogen Automobile Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wuhan Grove Hydrogen Automobile Co Ltd filed Critical Wuhan Grove Hydrogen Automobile Co Ltd
Priority to CN201811280468.5A priority Critical patent/CN109342081A/en
Publication of CN109342081A publication Critical patent/CN109342081A/en
Pending legal-status Critical Current

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M15/00Testing of engines
    • G01M15/02Details or accessories of testing apparatus
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M17/00Testing of vehicles
    • G01M17/007Wheeled or endless-tracked vehicles

Abstract

The present invention relates to a kind of fuel cell car power-driven system test platforms, including Simulation Control Platform, entire car controller and external loading, real-time processor is equipped in Simulation Control Platform, bus board, direct fault location board, signal conditioning module, load simulation module and I O board card, I O board card one end connects real-time processor, the other end is sequentially connected load simulation module, signal conditioning module and direct fault location board, real-time processor is connected inside Simulation Control Platform with all boards and module, acquisition signal simultaneously controls related load, all boards are connect by rigid line and CAN bus board with entire car controller, and pass through entire car controller and fuel cell system, fuel cell DCDC system, ECU in energy storage battery system and electric system is connected, in test, at least one in above system For external loading, realize that the static state of fuel cell car high voltage parts system and dynamic are tested on the same test platform.

Description

A kind of fuel cell car power-driven system test platform
Technical field
The present invention relates to a kind of auto Test Platforms, and in particular to a kind of fuel cell car is tested with power-driven system Platform.
Background technique
Fuel cell car is currently under year fuel cell of starting stage, especially 2018 answering on automobile at home With the attention just by each OEM and related components factory, each fuel cell passenger car, commercial vehicle, bus, logistic car etc. are successive It releases;Relative to the exploitation of fuel cell vehicle, very perfect, urgency is currently not specifically for the means of testing of fuel-cell vehicle A set of effective test platform is needed to come system, the comprehensive a whole set of high-pressure system of test verifying.The present invention is directed to fuel cell car On high-pressure system build it is a set of realize all high-pressure pipe member components systems of vehicle test and verification platform.
Summary of the invention
In view of this, a kind of disclosure of the invention fuel cell car power-driven system test platform, it can be achieved that Static state, the dynamic of fuel cell car high pressure key components and parts system are tested, and can research and develop early period to fuel cell car in vehicle In all high voltage parts systems carry out control strategy verifying, especially realization real steering vectors in be unable to test extreme operating condition and Fault condition shortens the development time, improves development efficiency.
Of the invention provides a kind of fuel cell car power-driven system test platform, including a Simulation Control is put down Platform, entire car controller and external loading are equipped with ECU in the external loading, are equipped with several realities in the Simulation Control Platform When simulation hardware, the real-time simulation hardware includes real-time processor, CAN bus board, direct fault location board, signal condition mould Block, load simulation module and several I O board cards, several I O board card one end connect the real-time processor, the other end jointly It is sequentially connected the load simulation module, the signal conditioning module and the direct fault location board, the direct fault location jointly Board connects the entire car controller by the CAN bus board with several I O board cards, and the entire car controller connects institute ECU is stated, for carrying out real-time data exchange between external loading and Simulation Control Platform, and then vehicle operation is simulated, obtains All kinds of measurement condition information of vehicle;
The load simulation module and external loading collectively form load assembly, and the load assembly includes fuel cell system System, fuel cell DCDC system, energy storage battery system and electric system, the fuel cell DCDC system and the energy-storage battery A bidirectional DC/DC converter is connected by high-voltage line between system, the electric system includes a motor and electric machine controller, institute It states electric machine controller one end to pass through high-voltage line while connecting the bidirectional DC/DC converter and the fuel cell DCDC system, separately One end connects the motor, and the motor connects a dynamometer machine by speed changer, and the dynamometer machine other end connection is described in real time Processor is exported for receiving the work information of the Simulation Control Platform test and adjusting torque revolving speed in real time.
Further, the real-time processor is separately connected the load simulation module, signal conditioning module, described Direct fault location board and several I O board cards for receiving data and control external loading operation.
Further, at least one in the load assembly is external loading.
Further, the real-time simulation platform further includes PLC technology power supply, the PLC technology power supply difference The external loading, real-time processor, CAN bus board, direct fault location board and several I O board cards are connected, to be powered.
Further, RAM card of the CPU connection one for storage.
Further, the energy storage battery system is super capacitor system, and the super capacitor system includes being connected with each other Super capacitor and super capacitance management system, the super capacitor passes through the bidirectional DC/DC converter and the fuel cell The motor is connected after parallel connection, when the line voltage distribution of motor access is higher than rated value, the fuel cell is super electricity Hold carry out charging energy-storing, when the motor access line voltage distribution be lower than rated value when, the super capacitor be the motor into Row power supply, the super capacitance management system connects the entire car controller by CAN bus board, and then realizes the vehicle Control of the controller for the super capacitor system.
Further, the energy storage battery system is electrokinetic cell system, and the electrokinetic cell system includes being connected with each other Power battery and power battery management system, the power battery passes through the bidirectional DC/DC converter and the fuel cell The motor is connected after parallel connection, when the line voltage distribution of motor access is higher than rated value, the fuel cell is power electric Pond carry out charging energy-storing, when the motor access line voltage distribution be lower than rated value when, the power battery be the motor into Row power supply, the power battery management system connects the entire car controller by CAN bus board, and then realizes the vehicle Control of the controller for the electrokinetic cell system.
Further, the energy storage battery system is the combination of super capacitor system and electrokinetic cell system, described super Capacitor system includes super capacitor and super capacitance management system interconnected, and the electrokinetic cell system includes being connected with each other Power battery and power battery management system, the super capacitor and the bidirectional DC/DC converter series connection after with the power Battery, the fuel cell are in parallel, then connect the motor jointly, when the line voltage distribution of motor access is higher than rated value When, the fuel cell and power battery are that the super capacitor carries out charging energy-storing simultaneously, when the route of motor access When voltage is lower than rated value, the super capacitor and power battery joint are that the motor is powered, the super capacitance Reason system passes through CAN bus board with power battery management system and connects the entire car controller, and then realizes the vehicle Control of the controller for the super capacitor system and electrokinetic cell system.
Further, the fuel cell system includes fuel cell;Fuel cell controller, for controlling fuel cell Operation power generation or stop;The hydrogen supply oxygen supply mechanism being connected with fuel cell, for providing fuel for the fuel cell;With combustion Expect the fuel cell cooling body of battery connection, temperature when for reducing the operation of fuel cells.
Further, the fuel cell DCDC system includes fuel cell DC-DC converter and fuel cell DCDC control Device, described fuel cell DCDC controller one end connect the fuel cell controller, and one end connects the fuel cell DCDC Converter for receiving the control signal of the fuel cell controller, and then controls the fuel cell DC-DC converter and connects The input voltage for receiving the fuel cell is ultimately converted to the fixed voltage effectively exported.
Technical solution provided by the invention, which has the benefit that, to realize fuel cell on the same test platform Static state, the dynamic of automobile high voltage parts system are tested, and can research and develop early period to all high pressures in fuel cell car in vehicle Components system carries out control strategy verifying, while the scalability of this test platform is stronger, can increase or decrease therein External loading, to meet different testing requirements.
Detailed description of the invention
Fig. 1 is the structural frames that the embodiment of the present invention one discloses a kind of fuel cell car power-driven system test platform Figure;
Fig. 2 is the structural frames that the embodiment of the present invention two discloses a kind of fuel cell car power-driven system test platform Figure;
Fig. 3 is the structural frames that the embodiment of the present invention three discloses a kind of fuel cell car power-driven system test platform Figure.
In figure: 1, Simulation Control Platform 2, entire car controller 3, fuel cell system 301, fuel cell 302, fuel cell Controller 303, hydrogen supply supply oxygen mechanism 304, fuel cell cooling body 4, fuel cell DCDC system 401, fuel cell DCDC Converter 402, fuel cell DCDC controller 5, energy storage battery system 511, super capacitor 512, super capacitance management system 521, power battery 522, power battery management system 6, electric system 601, motor 602, electric machine controller 7, bidirectional DC/DC turn Parallel operation 8, speed changer 9, dynamometer machine.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention Formula is further described.
Embodiment one
Referring to FIG. 1, embodiment of the invention discloses a kind of fuel cell car power-driven system test platform, Using entire fuel cell car as measurand, the test platform includes Simulation Control Platform 1, entire car controller 2 and outer Section load, for simulating the vehicle running environment of measurand, it is possible to provide input/output signal needed for measurand, such as respectively Class sensor signal, Switch signal and temperature signal etc.;Realize the signal acquisition of measurand and the movement of executing agency The functions, such as accelerator pedal, brake pedal, vacuum pump system such as execution etc.;Status information during measurand operation is provided Acquisition, such as the acquisition and monitoring of voltage, electric current, torque, revolving speed, temperature information carry out the ECU of hardware acquisition and measurand The functions such as the efficiency analysis of each system are realized in the comparison of monitoring parameters;Meanwhile it being equipped with ECU in each described external loading, For being attached control to external loading, in short, the Simulation Control Platform 1 can provide measurand dynamic test when it is whole All kinds of measurement conditions of vehicle are running test platform as virtual vehicle when carrying out dynamic and testing;
Various real-time simulation hardware are equipped in the Simulation Control Platform 1, the real-time simulation hardware includes processing in real time Device, CAN bus board, direct fault location board, signal conditioning module, load simulation module and several I O board cards, it is several described I O board card one end connects the real-time processor jointly, and the other end is sequentially connected the load simulation module, the signal jointly Conditioning module and the direct fault location board, the direct fault location board and several I O board cards pass through the CAN bus board The entire car controller is connected, the entire car controller connects the ECU of the external loading, is used for external loading and Simulation Control Real-time data exchange, and then entire test macro analog vehicle operation are carried out between platform 1, obtain each class testing of vehicle Work information, wherein several I O board cards include outputting and inputting the I O board card of analog quantity and outputting and inputting digital quantity I O board card realizes that the static state of fuel cell car high pressure key components and parts system and dynamic are tested on the same test platform, It can be researched and developed in vehicle and early period control strategy verifying be carried out to all high voltage parts systems in fuel cell car;
Wherein, the load simulation module and external loading collectively form the load assembly of this platform, the load assembly It is described negative in test for fuel cell system 3, fuel cell DCDC system 4, energy storage battery system 5 and electric system 6 Carrying at least one in assembly is external loading, i.e., the described fuel cell system 3, fuel cell DCDC system 4, energy storage battery system 5 and electric system 6 at least one be external loading, it is as in kind, the data accuracy fed back in test due to material object compared with Height compares the performance that can reflect itself, therefore more can really reflect the actual performance of components;
It is equipped with Real-Time Model and test software in the Simulation Control Platform 1, the load simulation module passes through survey Real-Time Model can be generated in examination software, emulated for realization vehicle dynamics simulation, road and traffic environment in testing, Driver's emulation and the load simulation module correspond to the emulation of components, thus can acquire the physical signal of material object and described The emulation signal of load simulation module is combined test, completes the static of fuel cell car high pressure key components and parts system and surveys Examination.
The fuel cell system includes fuel cell 301, for converting electric energy for chemical energy using fuel, so that it is defeated Power is provided out for vehicle;Fuel cell controller 302, the operation for controlling fuel cell generate electricity or stop;With fuel electricity The hydrogen supply of pond connection supplies oxygen mechanism 303, for providing fuel for the fuel cell;The fuel cell being connected with fuel cell is cold But mechanism 304, temperature when for reducing the operation of fuel cells.
The fuel cell DCDC system 4 includes fuel cell DC-DC converter 401 and fuel cell DCDC controller 402, described 402 one end of fuel cell DCDC controller connects the fuel cell controller 302, and one end connects the fuel electricity Pond DC-DC converter 401 for receiving the control signal of the fuel cell controller 302, and then controls the fuel cell DC-DC converter 401 receives the input voltage of the fuel cell 301, is ultimately converted to the fixed voltage effectively exported, for institute State the power supply of electric system 6 or energy-storage system charging.
A bidirectional DC/DC is connected by high-voltage line between the fuel cell DCDC system 4 and the energy storage battery system 5 Converter 7, in the present embodiment, the energy storage battery system 5 are super capacitor system, and the super capacitor system includes mutual The super capacitor 511 and super capacitance management system 512 of connection, since the charging time of super capacitor 511 is completely short, generally Within a few minutes can charging complete, the charging time is significantly shorter than automobile of other energy-storage batteries as power source, Er Qiexu Boat ability is very powerful, and the cruising ability of supercapacitor currently on the market reaches as high as 50-60 kilometers, can meet completely Incity operates normally, the super capacitor by high-voltage line connect after the bidirectional DC/DC converter 7 with the fuel cell 301 is in parallel, then connects the motor 601 jointly, described when the line voltage distribution of the motor 601 access is higher than rated value Fuel cell 301 can carry out charging energy-storing for super capacitor 511, when the line voltage distribution of the motor 601 access is lower than rated value When, the super capacitor 511 can be powered for the motor 601, and the super capacitance management system 512 passes through CAN bus The entire car controller 2 is connected, and then realizes control of the entire car controller 2 for the super capacitor system.
The electric system 6 includes a motor 601 and electric machine controller 602, and described 602 one end of electric machine controller passes through height Crimping connects the bidirectional DC/DC converter 7 and the fuel cell DCDC system 4 simultaneously, and the other end connects the motor 601, The motor 601 connects a dynamometer machine 9 by speed changer 8, and 9 other end of dynamometer machine connects the real-time processor, is used for The work information that the Simulation Control Platform 1 is tested is received, and adjusts torque revolving speed in real time using the speed changer 8 and exports, into And simulate different road resistances, and when finally obtaining vehicle closest to actual travel work information measurement, complete fuel The dynamic of battery car high pressure key components and parts system is tested.
Embodiment two
Referring to FIG. 2, embodiment of the invention discloses a kind of fuel cell car power-driven system test platform, With a kind of power-driven system test platform of fuel cell car disclosed in embodiment one the difference is that, the energy storage The material of battery system 5 is different, and the energy storage battery system 5 is electrokinetic cell system, and the electrokinetic cell system includes mutual The power battery 521 and power battery management system 522 of connection, since power battery 521 can receive and store by vehicle-mounted charge The high voltage direct current that machine, generator, brake power recovering device or external charging unit provide, and high pressure is provided for electric car Direct current drives vehicle driving as that can provide continual and steady power source in new-energy automobile using power battery 521, It is not only environmentally protective, and safety is higher, and service life is longer, can meet daily drive demand, and the power battery is logical Cross the bidirectional DC/DC converter 7 it is in parallel with the fuel cell 301 after connect the motor 601, when the motor 601 access Line voltage distribution be higher than rated value when, the fuel cell 301 can for power battery 521 carry out charging energy-storing, when the motor When the line voltage distribution of 601 accesses is lower than rated value, the power battery 521 can be powered for the motor 601, the power Battery management system 522 connects the entire car controller 2 by CAN bus, and then realizes the entire car controller 2 for described The control of electrokinetic cell system.
Embodiment three
Referring to FIG. 3, embodiment of the invention discloses a kind of fuel cell car power-driven system test platform, Exist with a kind of fuel cell car difference of power-driven system test platform disclosed in embodiment one and embodiment two In the material of the energy storage battery system 5 is different, and the energy storage battery system 5 is super capacitor system and electrokinetic cell system Combination, the super capacitor system includes super capacitor 511 and super capacitance management system 512 interconnected, described dynamic Power battery system includes power battery 521 and power battery management system 522 interconnected, and the energy-storage battery can in this way Have the advantages that the charging of super capacitor 511 is fast, and can be highly-safe with dynamic battery 521, the advantages of long service life, sufficiently Guarantee that the energy storage battery system 5 can store sufficient electric energy when in use, the super capacitor 511 and the bidirectional DC/DC turn Parallel operation 7 is in parallel with the power battery 521, the fuel cell 301 after connecting, and then connects the motor 601 jointly, works as institute When stating the line voltage distribution of the access of motor 601 higher than rated value, the fuel cell 301 and power battery 521 are described super simultaneously Grade capacitor 511 carries out charging energy-storing, when the line voltage distribution of the motor 601 access is lower than rated value, the super capacitor 511 It is that the motor 601 is powered with the joint of power battery 521, the super capacitance management system 512 and power battery management System 522 connects the entire car controller 2 by CAN bus, and then realizes the entire car controller 2 for the super electricity The control of appearance system and electrokinetic cell system.
It is described in the present invention that specific embodiments are merely illustrative of the spirit of the present invention.Technology belonging to the present invention The technical staff in field can make various modifications or additions to the described embodiments or by a similar method Substitution, however, it does not deviate from the spirit of the invention or beyond the scope of the appended claims.
In the absence of conflict, the feature in embodiment and embodiment herein-above set forth can be combined with each other.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.

Claims (10)

1. a kind of fuel cell car power-driven system test platform, it is characterised in that: including a Simulation Control Platform, whole Vehicle controller and external loading are equipped with ECU in the external loading, are equipped with several real-time simulations in the Simulation Control Platform Hardware, the real-time simulation hardware include real-time processor, CAN bus board, direct fault location board, signal conditioning module, bear It carries analog module and several I O board cards, several I O board card one end connects the real-time processor jointly, the other end is common It is sequentially connected the load simulation module, the signal conditioning module and the direct fault location board, the direct fault location board The entire car controller is connected by the CAN bus board with several I O board cards, described in the entire car controller connection ECU for carrying out real-time data exchange between external loading and Simulation Control Platform, and then simulates vehicle operation, obtains whole All kinds of measurement condition information of vehicle;
The load simulation module and external loading collectively form load assembly, the load assembly include fuel cell system, Fuel cell DCDC system, energy storage battery system and electric system, the fuel cell DCDC system and the energy-storage battery system A bidirectional DC/DC converter is connected by high-voltage line between system, the electric system includes a motor and electric machine controller, described Electric machine controller one end connects the bidirectional DC/DC converter and the fuel cell DCDC system simultaneously by high-voltage line, another End connects the motor, and the motor connects a dynamometer machine by speed changer, and the dynamometer machine other end connects the real-time place Device is managed, is exported for receiving the work information of the Simulation Control Platform test and adjusting torque revolving speed in real time.
2. a kind of fuel cell car power-driven system test platform according to claim 1, it is characterised in that: described Real-time processor is separately connected the load simulation module, the signal conditioning module, the direct fault location board and several IO Board for receiving data and controls external loading operation.
3. a kind of fuel cell car power-driven system test platform according to claim 1, it is characterised in that: described Loading at least one in assembly is external loading.
4. a kind of fuel cell car power-driven system test platform according to claim 1, it is characterised in that: described Real-time simulation platform further includes PLC technology power supply, the PLC technology power supply be separately connected the external loading, in real time Processor, CAN bus board, direct fault location board and several I O board cards, to be powered.
5. a kind of fuel cell car power-driven system test platform according to claim 1, it is characterised in that: described RAM card of the CPU connection one for storage.
6. a kind of fuel cell car power-driven system test platform according to claim 1, it is characterised in that: described Energy storage battery system is super capacitor system, and the super capacitor system includes super capacitor and super capacitance interconnected Reason system, the super capacitor by the bidirectional DC/DC converter it is in parallel with the fuel cell after connect the motor, when When the line voltage distribution of the motor access is higher than rated value, the fuel cell is that super capacitor carries out charging energy-storing, when described When the line voltage distribution of motor access is lower than rated value, the super capacitor is that the motor is powered, the super capacitance Reason system connects the entire car controller by CAN bus board, and then realizes the entire car controller for the super electricity The control of appearance system.
7. a kind of fuel cell car power-driven system test platform according to claim 1, it is characterised in that: described Energy storage battery system is electrokinetic cell system, and the electrokinetic cell system includes power battery and power battery pipe interconnected Reason system, the power battery by the bidirectional DC/DC converter it is in parallel with the fuel cell after connect the motor, when When the line voltage distribution of the motor access is higher than rated value, the fuel cell is that power battery carries out charging energy-storing, when described When the line voltage distribution of motor access is lower than rated value, the power battery is that the motor is powered, the power battery pipe Reason system connects the entire car controller by CAN bus board, and then realizes the entire car controller for the power electric The control of cell system.
8. a kind of fuel cell car power-driven system test platform according to claim 1, it is characterised in that: described Energy storage battery system is the combination of super capacitor system and electrokinetic cell system, and the super capacitor system includes interconnected Super capacitor and super capacitance management system, the electrokinetic cell system include power battery and power battery pipe interconnected It is in parallel with the power battery, the fuel cell after reason system, the super capacitor and bidirectional DC/DC converter series connection, Then the motor is connected jointly, when the line voltage distribution of motor access is higher than rated value, the fuel cell and power Battery is that the super capacitor carries out charging energy-storing simultaneously, described when the line voltage distribution of motor access is lower than rated value Super capacitor and power battery joint are that the motor is powered, the super capacitance management system and power battery management system System connects the entire car controller by CAN bus board, and then realizes the entire car controller for the super capacitor The control of system and electrokinetic cell system.
9. a kind of fuel cell car power-driven system test platform according to claim 1, it is characterised in that: described Fuel cell system includes fuel cell;Fuel cell controller, the operation for controlling fuel cell generate electricity or stop;With combustion Expect that the hydrogen supply of battery connection supplies oxygen mechanism, for providing fuel for the fuel cell;The fuel cell being connected with fuel cell Cooling body, temperature when for reducing the operation of fuel cells.
10. a kind of fuel cell car power-driven system test platform according to claim 9, it is characterised in that: institute Stating fuel cell DCDC system includes fuel cell DC-DC converter and fuel cell DCDC controller, the fuel cell DCDC Controller one end connects the fuel cell controller, and one end connects the fuel cell DC-DC converter, described for receiving The control signal of fuel cell controller, and then control the input that the fuel cell DC-DC converter receives the fuel cell Voltage is ultimately converted to the fixed voltage effectively exported.
CN201811280468.5A 2018-10-30 2018-10-30 A kind of fuel cell car power-driven system test platform Pending CN109342081A (en)

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Application Number Priority Date Filing Date Title
CN201811280468.5A CN109342081A (en) 2018-10-30 2018-10-30 A kind of fuel cell car power-driven system test platform

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Application Number Priority Date Filing Date Title
CN201811280468.5A CN109342081A (en) 2018-10-30 2018-10-30 A kind of fuel cell car power-driven system test platform

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113054226A (en) * 2021-03-10 2021-06-29 陈俊霖 Fuel cell power supply and electric vehicle

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113054226A (en) * 2021-03-10 2021-06-29 陈俊霖 Fuel cell power supply and electric vehicle

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