CN108600064A - A kind of multilayer Multi net voting Fuel Cell Vehicle Powertrain test platform - Google Patents
A kind of multilayer Multi net voting Fuel Cell Vehicle Powertrain test platform Download PDFInfo
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- CN108600064A CN108600064A CN201810291618.6A CN201810291618A CN108600064A CN 108600064 A CN108600064 A CN 108600064A CN 201810291618 A CN201810291618 A CN 201810291618A CN 108600064 A CN108600064 A CN 108600064A
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- Prior art keywords
- fuel cell
- network
- power
- control
- test platform
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L12/40006—Architecture of a communication node
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L2012/40208—Bus networks characterized by the use of a particular bus standard
- H04L2012/40215—Controller Area Network CAN
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L2012/40267—Bus for use in transportation systems
- H04L2012/40273—Bus for use in transportation systems the transportation system being a vehicle
Abstract
The present invention discloses a kind of multilayer Multi net voting Fuel Cell Vehicle Powertrain test platform, which includes Fuel Cell Vehicle Powertrain, power-measuring system, operation console and high in the clouds test platform, and each system and equipment control framework networking by multilayer Multi net voting and controls.It is Internet that top, which controls network, and it is power assembly CAN bus network that maincenter layer, which controls network, and there are two separate networks for the bottom, are all the way fuel cell CAN bus network, and another way is measurement of power CAN bus network；Each systematic communication network is independent, and network cloud platform, fuel cell generation, power assembly, power-measuring system network are not interfere with each other, but again can information exchange, greatly reduce vehicle true environment, and can meet the needs of of test.
Description
Technical field
The invention belongs to control system fields, and the fuel cell car of framework is controlled more particularly to a kind of multilayer Multi net voting
Dynamical system test platform.
Background technology
Energy problem has become the important restriction factor of China's socio-economic development, concerning economic security and national security,
The Development of Novel energy has been very urgent.Hydrogen Energy is following most promising one of the novel energy.It prepares in many ways
Hydrogen, electric power is directly translated by fuel cell, can be used for the vehicles such as automobile, train, realizes terminal pollutant
Zero-emission.Auto industry plays an important roll in terms of pushing national economic development and ensureing national energy security, national governments
The attention of height is all given to vehicle energy saving and new energy technology development.Fuel cell has low noise, pollution-free, zero-emission
The advantages that high with energy conversion efficiency, is particularly suitable for doing the power source of electric vehicle.National governments, enterprise and scientific research institution are all
It is dedicated to studying fuel cell electric vehicle emphatically, and heart of the Fuel Cell Vehicle Powertrain as fuel cell car,
It is currently in new breakthrough early period, is becoming the new research and development focus in the whole world.
From the point of view of existing achievement in research, had been carried out greatly to fuel cell, to the research of fuel cell car both at home and abroad
Elaboration is measured, achieves many achievements in research with directive significance, and be successfully made commercialization demonstrating running.But
Fuel cell car in China, even still belong to early stage of development in the world.The service life of fuel cell power system, can
There are prodigious room for promotion, the Chinese government also just persistently to increase the input of research funding in this respect by property, environmental suitability
Dynamics.
In order to improve fuel cell power system reliability of operation, stability, service life, runnability, hair are improved
It is necessary to open up the research of fuel cell power system test platform.Fuel cell power system test platform is to improve fuel
Battery car power system performance provides the tool and environment of important research and development, test, helps to push fuel cell industrialization
Process.
Current existing fuel cell power system test platform is all that test platform equipment is directly connected to tested move
In the control network of Force system, such as dynamometer machine equipment is all to share a communication network with dynamical system, and in fuel cell
It is that there is no this communication nodes of dynamometer machine in automobile actual motion environment.
Invention content
It does not interfere with each other the purpose of the present invention is to provide a kind of multilayer Multi net voting and respectively and the fuel of energy information exchange is electric
Pond automobile dynamic system test platform.
To achieve the above objectives, the present invention adopts the following technical scheme that.
A kind of multilayer Multi net voting Fuel Cell Vehicle Powertrain test platform, which is characterized in that including：Fuel cell vapour
Vehicle dynamical system, power-measuring system, operation console and high in the clouds test platform, each system and equipment control framework group by multilayer Multi net voting
Network control system.
Fuel Cell Vehicle Powertrain includes that fuel cell generation, fuel cell protection device, fuel cell are defeated
Go out control device, electric machine controller, electric motor of automobile, accumulator group and BMS；The fuel cell protection device, fuel cell are defeated
Go out control device, electric machine controller is connected in turn between the fuel cell generation and the electric motor of automobile, the storage
Battery pack and BMS are connected to the output end of the fuel cell output-controlling device；The fuel cell generation includes：Electricity
Heap, FC inspections subsystem and FC support subsystems.
Power-measuring system includes Dynamometer Control instrument, shaft coupling, torque rotational speed meters, AC induction motor, frequency converter, energy consumption dress
It sets；The asynchronous machine is connect by shaft coupling with the electric motor of automobile, and the torque rotational speed meters are connect with the shaft coupling, is used
The torque transmitted in the asynchronous motor shaft is acquired, the measurement of power controller is connect with the torque rotational speed meters, the frequency conversion
Device is connected on the asynchronous machine and is controlled by the Dynamometer Control instrument, and the energy-consuming device is connect with the frequency converter.
Operation console includes industrial personal computer, traffic filter, operation display, all kinds of monitoring gauge outfits, the oil being connect with industrial personal computer
Door pedal, brake pedal, Dynamometer Control instrument；
It is Internet that top, which controls network, and control centre is the server of high in the clouds test platform, to being tested power
System carries out that big data is excavated and analysis, catcher machine in parallel, notebook, pcs terminal equipment carry out human-computer interaction；
It is power assembly CAN bus network C AN1 namely system under test (SUT) network that maincenter layer, which controls network, couples fuel cell
FC support subsystems, fuel cell output-controlling device, electric machine controller, accumulator group management system BMS, the work of electricity generation system
Control machine carries out information exchange；
There are two separate networks for the bottom, are all the way fuel cell CAN bus network C AN2, connection fuel cell power generation system
FC inspections subsystem, FC support subsystems, the industrial personal computer of system carry out information exchange；
Bottom another way is measurement of power CAN bus network C AN3, and connection industrial personal computer is handed over observing and controlling machine controller into row information
Mutually；
As a further illustration of the above scheme, it is test that the test platform, which takes double centers control mode, industrial personal computer,
Field control center, while coupling power assembly CAN bus network, fuel cell CAN bus network, measurement of power CAN bus network,
Unified monitoring management is carried out to whole scene equipment；High in the clouds test platform server is remote control center, passes through internet net
Network couples computer, mobile phone, notebook, PAD mobile terminals and carries out human-computer interaction, and it is total by network access module to be linked into power
Device context control is carried out at CAN bus；Double centers simultaneously only one be operated in control model, another is operated in monitoring mould
Formula avoids instruction conflict.
The beneficial effects of the invention are as follows：
One, for the present invention using the control framework networking control of multilayer Multi net voting, it is Internet that top, which controls network, in
It is power assembly CAN bus network that pivot layer, which controls network, and there are two separate networks for the bottom, are all the way fuel cell CAN bus
Network, another way are measurement of power CAN bus network；Each systematic communication network is independent, network cloud platform, fuel cell power generation system
System, power assembly, power-measuring system network are not interfere with each other, but again can information exchange, greatly reduce vehicle true environment, and energy
Meets the needs of test.
Two, power assembly CAN bus is not connected to other any off-board in addition to industrial personal computer replaces the role of entire car controller
Equipment, communication network independent operating, therefore the vehicle environment of fuel cell car is utmostly reduced on the platform.
Three, test platform takes double centers control mode, and industrial personal computer is test site control centre, to whole scene equipment
Carry out unified monitoring management；High in the clouds test platform server be remote control center, double centers simultaneously only one be operated in control
Pattern, another is operated in monitoring mode, avoids instruction conflict.
Description of the drawings
Fig. 1 is the structural schematic diagram of Fuel Cell Vehicle Powertrain test platform provided by the invention.
Fig. 2 is that Fuel Cell Vehicle Powertrain test platform provided by the invention controls network diagram.
Fig. 3 is fuel cell protection device circuit block diagram.
Specific implementation mode
With reference to the attached drawing of specification, the specific implementation mode of the present invention is further described, makes the present invention's
Technical solution and advantage are clearer, clear.Embodiment is described below with reference to attached drawing to be exemplary, it is intended to solve
The present invention is released, and is not considered as limiting the invention.
As shown in Figure 1 and Figure 2, a kind of multilayer Multi net voting Fuel Cell Vehicle Powertrain test platform includes：Fuel cell
Automobile dynamic system 1, power-measuring system 2, operation console 3 and high in the clouds test platform 4, each system and equipment are controlled by multilayer Multi net voting
Framework networking controls.
Wherein, top control network is Internet, and control centre is the server of high in the clouds test platform, to tested
Dynamical system carries out that big data is excavated and analysis, the terminal devices such as catcher machine in parallel, notebook, computer carry out human-computer interaction.In
It is power assembly CAN bus network C AN1 namely system under test (SUT) network that pivot layer, which controls network, couples fuel cell generation
FC support subsystems, fuel cell output-controlling device, electric machine controller, accumulator group management system BMS, industrial personal computer carry out letter
Breath interaction.There are two separate networks for the bottom, are all the way fuel cell CAN bus network C AN2, connection fuel cell power generation system
FC inspections subsystem, FC support subsystems, the industrial personal computer of system carry out information exchange.Bottom another way is measurement of power CAN bus net
Network CAN3, connection industrial personal computer carry out information exchange with observing and controlling machine controller.
Fuel Cell Vehicle Powertrain includes that fuel cell generation, fuel cell protection device, fuel cell are defeated
Go out control device, electric machine controller, electric motor of automobile and accumulator group and BMS.Fuel Cell Vehicle Powertrain is system under test (SUT),
Power assembly CAN bus is not connected to other any off-board equipment, communication network in addition to industrial personal computer replaces the role of entire car controller
Network independent operating, therefore the vehicle environment of fuel cell car is utmostly reduced on the platform.
Fuel cell protection device is as shown in figure 3, internal circuit is：Anode takes over control reflux two first after fuel cell output
Pole pipe, then contactor, most back-connected fuse (insurance) output are connect, cathode exports after connecing D.C. contactor.The device is using air cooling
Mode, fan are controlled by relay, and relay control coil is controlled by industrial personal computer.There are current sensor, signal to pass in major loop
It is defeated by analog signal filter.
Operation console includes industrial personal computer, traffic filter, display (containing key mouse), all kinds of monitoring gauge outfits, gas pedal, brake
Pedal and Dynamometer Control instrument.Industrial personal computer is test site control centre, using grinding magnificent rack industrial personal computer.Industrial personal computer is based on
Lab View software development interactive softwares, Functional Design and operation principle are as follows：
1. all kinds of acquisition signals passed over by traffic filter are read, including：Hydrogen inlet pressure, hydrogen stream
The information such as amount, import pneumatics, air mass flow, inlet water temperature, exit water temperature, pile output voltage, electric current, and calculate automatically defeated
Go out power information.
2. by I O board card real-time control fuel cell protection device, including control major loop contactor, cooling fan relay
Switch etc..
3. by independent CAN cards read power assembly CAN bus network information, by fuel cell generation operating mode,
Fuel cell protection device state, output-controlling device operating mode, motor display of regime come out, and to fuel cell generation,
Fuel cell protection device, output-controlling device, electric motor of automobile assign control instruction.
4. reading the information of fuel cell CAN bus network by independent CAN cards, FC support subsystems operating mode, FC are patrolled
Check system parameter is shown.
5. reading the information of measurement of power CAN bus network by independent CAN cards, power-measuring system display of regime is come out, and right
Dynamometer Control instrument assigns control instruction.
6. all kinds of curves can be drawn according to the data of acquisition and analyzed.
7. software test pattern is divided into pedal emulation testing pattern and operating mode emulation testing pattern.In pedal emulation testing mould
Under formula, simulated using throttle, the brake pedal drive simulating below operation console, test software is automatically performed full-vehicle control and energy
Management.Under operating mode emulation testing pattern, by the operating mode of setting, the road condition situation to simulate different is tested, and is surveyed
It tries platform and starts power-measuring system fictitious load, software is automatically performed torque load and energy management.
Analog signal filter operation principle is, first by hydrogen inlet pressure, hydrogen flowing quantity, import pneumatics, air stream
Each signals such as amount, inlet water temperature, exit water temperature, pile voltage, pile electric current are converted into voltage signal, using linear isolation electricity
Road is isolated, and Butterworth filter filtering clutter is then passed through, and signal buffer is carried out using emitter follower, last defeated
Enter and gives industrial personal computer acquisition system.
Power-measuring system includes Dynamometer Control instrument, shaft coupling, torque rotational speed meters, AC induction motor, frequency converter and energy consumption
Device.Controller unit of the Dynamometer Control instrument as power-measuring system mainly acquires asynchronous motor shaft by torque rotational speed meters and uploads
The torque passed, and the rotating speed control to the threephase asynchronous machine of power-measuring system is completed by 485ModuBus bus marco frequency converters
System.Meanwhile Dynamometer Control instrument receives industrial personal computer by CAN bus and sends order, realizes user to the phase asynchronous electricity of dynamometer machine
The remote control of machine rotating speed.
Energy-consuming device can be purely resistive load, or electric energy is reverse into alternating current and returned by DC/AC inverter apparatus
Transmission network, to reach energy-efficient purpose.
High in the clouds test platform has two big designs, and one is to be linked into tested network power assembly by network access module
In CAN bus, tester can use mobile terminal monitored tested dynamical system in any place in the whole world, and substitute full-vehicle control
Device and industrial personal computer carry out remote control；One is to do big data excavation, by recording a large amount of test data, carries out data mining
The influence of fading factor and prediction attenuation curve of each component of dynamical system are analyzed in research.
This test platform can complete the independent test of fuel cell generation, the independent test of output-controlling device, vapour
The independent test of vehicle driving motor, the integration tests function such as dynamical system energy management test.
From the foregoing description of structures and principles it should be understood by those skilled in the art that, the present invention not office
It is limited to above-mentioned specific implementation mode, uses the improvement of techniques well known and replacement to all fall within this hair on the basis of the present invention
Bright protection domain, protection scope of the present invention should limit it by each claim and its equivalent.In specific implementation mode
The part not illustrated is the prior art or common knowledge.
Claims (2)
1. a kind of multilayer Multi net voting Fuel Cell Vehicle Powertrain test platform, which is characterized in that including：Fuel cell car
Dynamical system, power-measuring system, operation console and high in the clouds test platform, each system and equipment control framework networking by multilayer Multi net voting
Control；
Fuel Cell Vehicle Powertrain includes fuel cell generation, fuel cell protection device, fuel cell output control
Device, electric machine controller, electric motor of automobile, accumulator group and BMS processed；
Power-measuring system includes Dynamometer Control instrument, shaft coupling, torque rotational speed meters, AC induction motor, frequency converter, energy-consuming device；
Operation console includes industrial personal computer, traffic filter, operation display, monitoring gauge outfit, gas pedal, brake pedal, dynamometer machine
Controller；
It is Internet that top, which controls network, and control centre is the server of high in the clouds test platform, to being tested dynamical system
Carry out that big data is excavated and analysis, catcher machine in parallel, notebook, pcs terminal equipment carry out human-computer interaction；
It is power assembly CAN bus network (CAN1) namely system under test (SUT) network, connection fuel cell hair that maincenter layer, which controls network,
The FC support subsystems of electric system, fuel cell output-controlling device, electric machine controller, accumulator group management system BMS, industry control
Machine carries out information exchange；
There are two separate networks for the bottom, are all the way fuel cell CAN bus network (CAN2), couple fuel cell generation
FC inspections subsystem, FC support subsystems, industrial personal computer carry out information exchange；
Bottom another way is measurement of power CAN bus network (CAN3), and connection industrial personal computer carries out information exchange with observing and controlling machine controller.
2. multilayer Multi net voting Fuel Cell Vehicle Powertrain test platform according to claim 1, it is characterised in that：It is described
Test platform takes double centers control mode, and industrial personal computer is test site control centre, while coupling power assembly CAN bus net
Network, fuel cell CAN bus network, measurement of power CAN bus network carry out unified monitoring management to whole scene equipment；High in the clouds is surveyed
Examination Platform Server is remote control center, and coupling computer, mobile phone, notebook, PAD mobile terminals by Internet carries out
Human-computer interaction, and power assembly CAN bus is linked by network access module and carries out device context control；Double centers simultaneously only
One is operated in control model, another is operated in monitoring mode, avoids instruction conflict.
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| CN201810291618.6A CN108600064A (en) | 2018-04-03 | 2018-04-03 | A kind of multilayer Multi net voting Fuel Cell Vehicle Powertrain test platform |
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| CN201810291618.6A CN108600064A (en) | 2018-04-03 | 2018-04-03 | A kind of multilayer Multi net voting Fuel Cell Vehicle Powertrain test platform |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109342081A (en) * | 2018-10-30 | 2019-02-15 | 武汉格罗夫氢能汽车有限公司 | A kind of fuel cell car power-driven system test platform |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101762800A (en) * | 2010-01-28 | 2010-06-30 | 北京航空航天大学 | Battery managing system testing platform |
| CN102494898A (en) * | 2011-12-12 | 2012-06-13 | 武汉理工大学 | Comprehensive test platform and method for dynamic system of fuel cell hybrid electric vehicle |
| CN105928711A (en) * | 2016-04-20 | 2016-09-07 | 同济大学 | Remote testing and verification system of electric vehicle power system |
| CN106441925A (en) * | 2016-08-05 | 2017-02-22 | 山东沃森电源设备有限公司 | Test device of power system of electric vehicle |
| CN106878062A (en) * | 2017-01-11 | 2017-06-20 | 同济大学 | A kind of many net redundancy approach of fuel cell car power performance test system |
-
2018
- 2018-04-03 CN CN201810291618.6A patent/CN108600064A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101762800A (en) * | 2010-01-28 | 2010-06-30 | 北京航空航天大学 | Battery managing system testing platform |
| CN102494898A (en) * | 2011-12-12 | 2012-06-13 | 武汉理工大学 | Comprehensive test platform and method for dynamic system of fuel cell hybrid electric vehicle |
| CN105928711A (en) * | 2016-04-20 | 2016-09-07 | 同济大学 | Remote testing and verification system of electric vehicle power system |
| CN106441925A (en) * | 2016-08-05 | 2017-02-22 | 山东沃森电源设备有限公司 | Test device of power system of electric vehicle |
| CN106878062A (en) * | 2017-01-11 | 2017-06-20 | 同济大学 | A kind of many net redundancy approach of fuel cell car power performance test system |
Non-Patent Citations (1)
| Title |
|---|
| 沈迪: "《燃料电池电动汽车动力系统综合测试平台的研究与实现》", 《中国优秀硕士学位论文全文数据库 工程科技||辑》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109342081A (en) * | 2018-10-30 | 2019-02-15 | 武汉格罗夫氢能汽车有限公司 | A kind of fuel cell car power-driven system test platform |
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Application publication date: 20180928 |
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