CN103207084B - For the dynamic performance testing system of Fuel Cell Vehicle Powertrain - Google Patents

Abstract

The present invention relates to a kind of dynamic performance testing system for Fuel Cell Vehicle Powertrain, comprising: environmental simulation module and NVH for providing actual condition test matching module; For the engine hardware of testing at ring test matching module, power drive system hardware-in―the-loop test matching module and automobile dynamic system hardware-in―the-loop test matching module; For the analogue simulation module of the running environment parameter under software environment Imitating actual condition; For carrying out testing and the line load parameter investigating module controlled at the kinetic parameter of ring test matching module and the load parameter of power drive system hardware-in―the-loop test matching module to engine hardware; With other each model calling, for controlling and preserve the master control administration module of test data in real time.Compared with prior art, integrated level of the present invention is high, versatility good, can simulate actual condition, and can consider thermal environment and vibration noise environment to the impact of Fuel Cell Vehicle Powertrain.

Description

Dynamic performance test system for fuel cell vehicle power system

technical field

The invention relates to a vehicle performance testing system, in particular to a dynamic performance testing system for a fuel cell vehicle power system.

Background technique

At present, there is no highly integrated special equipment for fuel cell vehicle power system integration, debugging and testing at home and abroad, which cannot meet the tests of fuel cell vehicle power system integration, matching, reliability, durability, environmental adaptability and safety. needs, the specific analysis is as follows:

A. Analysis of domestic and foreign technical status of key instruments and equipment for FC stacks:

At present, there is no test platform for simulating vehicle-mounted variable working conditions of fuel stacks developed for vehicle conditions in China, and only records the actual operating parameters of fuel cells. Many companies in the world have launched their own fuel cell test platforms. Hydrogenics and National Instruments in the United States have launched some hardware and software test products, which are compatible with various fuel cells. Greenlight Company of Canada, Fuel Cell Technologies (FCT) of the United States, and FuelCon Company of Germany have all launched their own fuel cell testing equipment. Domestic companies have also launched fuel cell test systems for stacks of different specifications, but generally the accuracy is not high. For example, the invention patent with the patent number of 200810036146.6 and the utility model patent with the patent number of ZL200820114566.7 both mentioned a test platform capable of testing the performance of the fuel cell stack, which can monitor the relationship between various operating parameters and the performance of the fuel cell stack. Relationship. It can be seen that there is no mature test platform for simulating vehicle conditions and changing working conditions in China.

B. Analysis of domestic and foreign technical status of key instruments and equipment of FCE system:

In foreign countries, some powerful R&D institutions such as Canadian Hydrogenics and FuelConSystems, American NI (Naional Instruments) and American International Fuel Cell Instruments have developed more practical test systems that can test multiple properties of different fuel cells. index. When testing the performance of fuel cells in China, we have to rely on foreign products and technologies. At present, domestic test systems mostly target low-power fuel cells as test and analysis objects, and there are few dedicated development and test equipment for vehicle fuel cell systems above 50kW.

C. Analysis of domestic and foreign technical status of key instruments and equipment of FCV power system:

The authorized announcement number is CN 1601792B's invention patent "fuel cell hybrid power system test and research system", which proposes a fuel cell hybrid power system test and research system, but the test object is mainly for single-motor-driven fuel cell buses. It can also be seen that the authorized announcement numbers are CN 101660972B, CN 101261189B invention patents.

It can be seen that based on the AC power dynamometer system, through the secondary development of the control system, it can realize functions such as driver simulation, vehicle and road condition simulation, and driving cycle simulation, and dynamically load the test power system to build a complete fuel cell. There is no precedent for the hardware-in-the-loop simulation test bench of the automobile power transmission system in China.

D. Analysis of domestic and foreign technical status of FCV power system and key components simulation design instruments and equipment:

At present, most researches on modeling of PEMFC system focus on system simulation and experimental analysis. The research on the mechanism model mainly focuses on the single pool and each unit in the single pool. For PEM, there is a representative diffusion model based on the principle of proton dissolution proposed by Verbrugge (1990); for the catalytic layer, Bultel (1998) published a proton transfer model based on the principle of mass transfer; for the diffusion layer, there is Yi (1999) ) mass forced convection transfer model; and Bevers (1997) electrode model based on heat and mass transfer principles. However, how to combine the internal model of the mechanism with the external model of experience, and study appropriate mathematical means to rationally simplify the spatial parameter distribution model into a concentrated parameter model, which can not only reflect the internal operation mechanism of the HT-PEMFC stack but also be applicable to control design, such Modeling research efforts have not been uncovered from the published literature so far.

E, FCE, FCV power system experiment NVH environment domestic and foreign technical status analysis:

At present, the vibration and noise of the current fuel cell car prototypes in the world have two characteristics: loud noise and poor sound quality of fuel cell cars.

Because the general layout of fuel cell cars is different, most fuel cell cars still use the original internal combustion engine body. Although the fuel cell car omits the noise source of the internal combustion engine, it adds noise sources such as the motor, the fuel cell system, and the cooling system, and the noise of the air conditioning system of the traditional car that is masked by the noise of the internal combustion engine will be reflected in the fuel cell car . Compared with traditional internal combustion engine vehicles, the total noise sources of fuel cell vehicles have increased many, and present the characteristics of promulgated noise sources. A variety of noise sources work together to deteriorate the noise quality inside and outside the car, and the car driver and passengers feel bad.

In recent years, there have been researches and developments at home and abroad on a number of distinctive electric vehicle concept prototypes driven by fuel cell power systems. The research on vibration and noise of power system and its control is almost blank.

F, FC, FCE, FCV power system experiment temperature, humidity and pressure environment analysis of domestic and foreign technical status:

At present, there is no mature equipment supplier in the world that can provide a suitable test environment for fuel cell vehicle power systems and their key components. Major automakers such as General Motors, Mercedes-Benz, Toyota, etc., and fuel cell and system integrators such as Canada's Ballard Corporation, UTC Corporation of the United States, NEWCELL of Germany, and some research institutes such as FCTec of the U.S. Department of Defense have cooperated with some equipment suppliers to develop test environments for fuel cell vehicle power systems and key components. The development experience in the system field establishes the corresponding test methods and standards. The FCTec (Fuel Cell Test and Evaluation Center), jointly established by the U.S. Department of Defense (DoD), CTC and the U.S. Army Engineer Research and Development Center (The U.S.Army Engineer Research and Development Center), has established a complete set of testing environments, including Fuel cell-related test equipment, and provide fuel cell-related test research and evaluation for military and civilian use.

Therefore, in summary, the current fuel cell vehicle power system mainly has the following disadvantages:

1) There is no integrated instrument and equipment at home and abroad that integrates the three systems of fuel cell and auxiliary system hardware-in-the-loop test matching, electric drive system hardware-in-the-loop test matching, and fuel cell vehicle power system hardware in-environment test matching. not tall;

2) There is no comprehensive test system at home and abroad that comprehensively considers the dynamic performance of the fuel cell vehicle power system operating under variable working conditions under the matching environment of temperature, humidity and pressure environment and NVH test;

3) The domestic fuel cell test system has poor versatility, and the test matching of fuel cell cars and fuel cell buses cannot be considered at the same time;

4) Due to the low level of integration, the current domestic and foreign fuel cell test matching systems have single functions, and there are few influencing factors for reference.

Contents of the invention

The purpose of the present invention is to provide a dynamic performance test system for fuel cell vehicle power system in order to overcome the defects of the above-mentioned prior art. The test system has high integration and good versatility, and can simulate actual working conditions. And the influence of thermal environment and vibration and noise environment on fuel cell vehicle power system can be considered comprehensively.

The purpose of the present invention can be achieved through the following technical solutions:

A dynamic performance testing system for a power system of a fuel cell vehicle, comprising:

Environmental simulation module: used to provide the temperature, humidity and pressure environment under the actual working conditions of the fuel cell vehicle engine;

NVH test matching module: used to provide the NVH environment under the actual working conditions of the fuel cell vehicle electric drive system;

Engine hardware-in-the-loop test matching module: replace the electric drive system with an electronic load, and perform an in-loop matching test on the engine hardware in the environmental simulation module;

Electric drive system hardware-in-the-loop test matching module: based on the analog power supply configuration, the electric drive system hardware is tested in the loop in the NVH test matching module;

Automotive power system hardware-in-the-loop test matching module: call the engine hardware-in-the-loop test matching module and the electric drive system hardware-in-the-loop test matching module to perform in-loop matching tests on the automotive power system hardware;

Simulation module: In the software environment, it provides the operating environment parameters under the simulated actual working conditions for the hardware-in-the-loop test matching module of the vehicle power system;

Power load parameter measurement and control module: used to test and control the power parameters of the engine hardware-in-the-loop test matching module and the load parameters of the electric drive system hardware-in-the-loop test matching module;

Main control management module: connection environment simulation module, NVH test matching module, engine hardware-in-the-loop test matching module, electric drive system hardware-in-the-loop test matching module, vehicle power system hardware-in-the-loop test matching module, simulation module and dynamic load parameters The measurement and control module performs real-time control and stores test data.

The engine hardware-in-the-loop test matching module includes:

Air supply unit: used to provide air for the fuel cell vehicle engine;

Hydrogen supply unit: used to provide hydrogen for fuel cell vehicle engines;

Water-cooling management unit: used to provide cooling water for fuel cell vehicle engines;

Fuel cell online partition test diagnosis matching unit: used for online testing of each partition and each unit of the fuel cell, and performing partition diagnosis and parameter matching for test parameters;

High-voltage DC/DC converter: used for DC boosting the voltage output by the fuel cell vehicle engine.

The fuel cell online partition test diagnostic matching unit includes:

Fuel cell internal parameter test subunit: perform real-time test on the internal parameters of the fuel cell when it is working;

Fuel cell online partition diagnosis test subunit: according to the test data measured by the fuel cell internal parameter test subunit, perform fault diagnosis on each partition and each unit of the fuel cell;

Fuel cell module balance matching test subunit: according to the fault diagnosis result of the fuel cell online partition diagnosis test subunit, carry out balance matching on each partition and each unit of the fuel cell.

The hardware-in-the-loop test matching module of the electric drive system includes an electric drive unit, a differential speed unit, a first mechanical load simulation unit and a second mechanical load simulation unit, the electric drive unit is connected to the differential speed unit, and the Both the first mechanical load simulation unit and the second mechanical load simulation unit are connected to the differential unit, and the electric drive unit is used to convert the electrical energy output by the fuel cell vehicle engine into mechanical energy, and transmit it to the first mechanical load simulation unit via the differential unit and a second mechanical load simulation unit for load simulation.

Compared with the prior art, the present invention has the following advantages:

1. Integrate the three systems of fuel cell engine hardware-in-the-loop test matching, electric drive system hardware-in-the-loop test matching, and fuel cell vehicle power system hardware-in-the-loop test matching, which can realize test matching independently or integrate linkage test matching , High equipment integration.

2. It can simulate the thermal environment and the test environment of the fuel cell vehicle power system operating under variable load conditions in real time, and can perform simulation control simulation.

3. Good versatility, not only suitable for fuel cell cars, but also suitable for power system testing and matching of fuel cell buses.

4. It can consider temperature, humidity, pressure, NVH, load, air volume, hydrogen volume, cooling water, control and other factors, with powerful functions.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

Detailed ways

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

Example

As shown in Figure 1, a dynamic performance test system for fuel cell vehicle power system includes the following modules:

Environmental simulation module 1: used to provide the temperature, humidity and pressure environment under the actual working conditions of the fuel cell vehicle engine;

NVH test matching module 2: used to provide the NVH environment of the fuel cell vehicle electric drive system under actual working conditions;

Engine hardware-in-the-loop test matching module 3: replace the electric drive system with an electronic load, and perform an in-loop matching test on the engine hardware in the environmental simulation module;

Electric drive system hardware-in-the-loop test matching module 4: Based on the analog power supply configuration, conduct an in-loop matching test on the electric drive system hardware in the NVH test matching module;

Vehicle power system hardware-in-the-loop test matching module 5: call the engine hardware-in-the-loop test matching module and the electric drive system hardware-in-the-loop test matching module to perform in-loop matching tests on the vehicle power system hardware;

Simulation module 6: provide operating environment parameters under simulated actual working conditions for the hardware-in-the-loop test matching module of the vehicle power system in the software environment;

Power load parameter measurement and control module 7: used to test and control the power parameters of the engine hardware-in-the-loop test matching module and the load parameters of the electric drive system hardware-in-the-loop test matching module;

Main control management module 8: connection environment simulation module 1, NVH test matching module 2, engine hardware-in-the-loop test matching module 3, electric drive system hardware-in-the-loop test matching module 4, vehicle power system hardware-in-the-loop test matching module 5, simulation The simulation module 6 and the dynamic load parameter measurement and control module 7 perform real-time control and store test data.

The engine hardware-in-the-loop test matching module 3 consists of an air supply unit 31, a hydrogen supply unit 32, a water cooling management unit 33, a fuel cell online partition test diagnosis matching unit 34, and a high-voltage DC/DC converter. Among them, the air supply unit 31 is used to provide air for the fuel cell vehicle engine, the hydrogen supply unit 32 is used to provide hydrogen for the fuel cell vehicle engine, the water cooling management unit 33 is used to provide cooling water for the fuel cell vehicle engine, and the high-voltage DC/DC conversion The converter 35 is used for DC boosting the output voltage of the fuel cell vehicle engine. The fuel cell online partition test diagnosis matching unit 34 includes three subunits, which are the fuel cell internal parameter test subunit 341 , the fuel cell online partition diagnosis test subunit 342 and the fuel cell module balance matching test subunit 343 . The fuel cell internal parameter test subunit 341 performs real-time tests on the internal parameters of the fuel cell during operation, and the fuel cell online partition diagnosis test subunit 342 tests the fuel cell for each partition according to the test data measured by the fuel cell internal parameter test subunit 341. Perform fault diagnosis with each unit, and the fuel cell module balance matching test subunit 343 performs balance matching on each fuel cell partition and each unit according to the fault diagnosis result of the fuel cell online partition diagnosis test subunit 342 .

The electric drive system hardware-in-the-loop test matching module 4 includes an electric drive unit 41, a differential speed unit 42, a first mechanical load simulation unit 43 and a second mechanical load simulation unit 44, the electric drive unit 41 is connected to the differential speed unit 42, and the first Both the mechanical load simulation unit 43 and the second mechanical load simulation unit 44 are connected to the differential unit 42, and the electric drive unit 41 is used to convert the electrical energy output by the engine of the fuel cell vehicle into mechanical energy, and transmit it to the first mechanical energy via the differential unit 42. The load simulation unit 43 and the second mechanical load simulation unit 44 perform load simulation.

The engine hardware-in-the-loop test matching module 3 in the present invention corresponds to the engine hardware-in-the-loop test matching system, the electric drive system hardware-in-the-loop test matching module 4 corresponds to the electric drive system hardware-in-the-loop test matching system, and the vehicle power system hardware-in-the-loop test matching system Module 5 and simulation module 6 correspond to the hardware-in-the-loop test and matching system of the vehicle power system. It integrates three systems and can realize test matching independently or integrate linkage test matching, making the equipment highly integrated. Moreover, it is not only suitable for fuel cell cars, but also suitable for testing and matching the power system of fuel cell buses. It has good versatility and can comprehensively consider the influence of thermal environment and vibration and noise environment on the power system of fuel cell vehicles.

Claims (4)

1., for a dynamic performance testing system for Fuel Cell Vehicle Powertrain, it is characterized in that, comprising:

Environmental simulation module: for providing temperature, humidity and the pressure environment under fuel battery car engine actual condition;

NVH tests matching module: for providing the NVH environment under fuel cell car power drive system actual condition;

Engine hardware is at ring test matching module: replace power drive system with electronic load, carries out at ring matching test in environmental simulation module to engine hardware;

Power drive system hardware-in―the-loop test matching module: based on analog power configuration, tests at NVH and carries out at ring matching test to power drive system hardware in matching module;

Automobile dynamic system hardware-in―the-loop test matching module: call engine hardware at ring test matching module and power drive system hardware-in―the-loop test matching module, carry out at ring matching test to automobile dynamic system hardware;

Analogue simulation module: for automobile dynamic system hardware-in―the-loop test matching module provides the running environment parameter under simulation actual condition under software environment;

Line load parameter investigating module: for carrying out testing and control at the kinetic parameter of ring test matching module and the load parameter of power drive system hardware-in―the-loop test matching module to engine hardware;

Master control administration module: JA(junction ambient) analog module, NVH test matching module, engine hardware in ring test matching module, power drive system hardware-in―the-loop test matching module, automobile dynamic system hardware-in―the-loop test matching module, analogue simulation module and line load parameter investigating module, control in real time, and store test data.

2. a kind of dynamic performance testing system for Fuel Cell Vehicle Powertrain according to claim 1, it is characterized in that, described engine hardware comprises at ring test matching module:

Air feeding unit: for providing air for fuel battery car engine;

Hydrogen feeding unit: for providing hydrogen for fuel battery car engine;

Water-cooled administrative unit: for providing chilled water for fuel battery car engine;

Fuel cell online subregion testing and diagnosing matching unit: for carrying out on-line testing to each subregion of fuel cell and unit, carry out subregion diagnosis and parameter matching for test parameter;

High pressure DC/DC converter: the voltage for exporting fuel battery car engine carries out DC boosting.

3. a kind of dynamic performance testing system for Fuel Cell Vehicle Powertrain according to claim 2, is characterized in that, described fuel cell online subregion testing and diagnosing matching unit comprises:

Fuel battery inside parameter testing subelement: real-time testing is carried out to inner parameter during operation of fuel cells;

Fuel cell online subregion diagnostic test subelement: the test data that records of fuel cell inner parameter test subelement, carries out fault diagnosis to each subregion of fuel cell and unit;

Fuel cell module balanced Matching test subelement: the fault diagnosis result of fuel cell online subregion diagnostic test subelement, carries out balanced Matching to each subregion of fuel cell and unit.

4. a kind of dynamic performance testing system for Fuel Cell Vehicle Powertrain according to claim 1, it is characterized in that, described power drive system hardware-in―the-loop test matching module comprises electric drive unit, differential unit, first mechanical load analogue unit and the second mechanical load analogue unit, described electric drive unit is connected with differential unit, the first described mechanical load analogue unit is all connected with differential unit with the second mechanical load analogue unit, the electric energy that electric drive unit is used for fuel battery car engine exports is converted to mechanical energy, and be passed to the first mechanical load analogue unit via differential unit and the second mechanical load analogue unit carries out load simulation.