CN112033702A - Electric automobile intelligence thermal management system test bench - Google Patents
Electric automobile intelligence thermal management system test bench Download PDFInfo
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- CN112033702A CN112033702A CN202011074437.1A CN202011074437A CN112033702A CN 112033702 A CN112033702 A CN 112033702A CN 202011074437 A CN202011074437 A CN 202011074437A CN 112033702 A CN112033702 A CN 112033702A
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Abstract
The invention discloses a test bed of an intelligent thermal management system of an electric automobile. The method comprises the following steps: the system comprises a tested vehicle and a running environment virtual simulation subsystem, wherein the running environment virtual simulation subsystem is used for carrying out real-time simulation on a running scene of the tested vehicle, and the running scene comprises a road environment and a running environment; the rotary drum testing subsystem is connected with the running environment virtual simulation subsystem and used for simulating the running resistance of the vehicle according to the road environment output by the running environment virtual simulation subsystem; and the environment cabin subsystem is connected with the running environment virtual simulation subsystem and is used for simulating the running environment output by the running environment virtual simulation subsystem. The test bench of the intelligent thermal management system of the electric automobile, disclosed by the invention, combines the intelligent simulation technology of the automobile with the environmental chamber technology and the rotary drum test technology, provides possibility for realizing the bench test of the intelligent thermal management system, and provides necessary technical support for the design, debugging and verification of the intelligent thermal management system.
Description
Technical Field
The invention relates to the field of intelligent thermal management systems of electric automobiles, in particular to a test bench for an intelligent thermal management system of an electric automobile.
Background
With the development of electric vehicle technology and intelligent vehicle technology, artificial intelligence technology is increasingly applied to electric vehicles. The intelligent thermal management system of the electric automobile performs intelligent thermal management control on the passenger compartment, the power system and the power battery of the vehicle according to information such as the running path, the traffic flow, the environmental temperature and the humidity of the vehicle, can save thermal management energy consumption while ensuring the temperature comfort of the vehicle, and is a novel thermal management technology with good application prospect. However, the existing test bed for the thermal management system of the electric vehicle can only realize the test of the traditional thermal management system, cannot provide traffic information based on the intelligent networking technology, such as a running planning path, a current traffic flow state, a traffic light state in a front path and the like, for a tested vehicle, and cannot meet the requirement of the intelligent thermal management system for normal work. Therefore, related test benches are lacked at present to realize important technical links such as development, debugging and testing of the intelligent thermal management system of the electric automobile.
Disclosure of Invention
In order to meet the test requirements of the intelligent thermal management system of the electric automobile, the intelligent networking technology is combined with the bench test technology of the traditional thermal management system of the electric automobile, the generation and the output of traffic information such as a vehicle running planning path, a current traffic flow state, a traffic light state in a front path and the like are realized through the virtual running environment simulation technology, the control of the external environment temperature, the humidity, the illumination intensity and the windward speed of the vehicle is realized through the environment cabin technology, the simulation of the running resistance of the vehicle and the measurement of the running parameters are realized through the rotary drum test bench, and the effective simulation of the whole vehicle test environment is further realized through the information interaction and the coordination control among the systems.
In order to achieve the purpose, the invention provides the following scheme:
the utility model provides an electric automobile intelligence thermal management system test bench, includes:
a vehicle under test, wherein the vehicle under test is an electric automobile equipped with an intelligent thermal management system;
the running environment virtual simulation subsystem is used for carrying out real-time simulation on a running scene of the tested vehicle, wherein the running scene comprises a road environment and a running environment;
the rotary drum testing subsystem is connected with the running environment virtual simulation subsystem and used for simulating the running resistance of the vehicle according to the road environment output by the running environment virtual simulation subsystem;
and the environment cabin subsystem is connected with the running environment virtual simulation subsystem and is used for simulating the running environment output by the running environment virtual simulation subsystem.
Optionally, the drum test subsystem comprises a drum test stand and a drum control stand; the tested vehicle is arranged on the rotary drum test bed; the rotary drum control platform is connected with the running environment virtual simulation subsystem and used for adjusting the rotary drum test platform in real time according to the road environment output by the running environment virtual simulation subsystem so as to simulate the running resistance of a vehicle.
Optionally, the drum test bed is further configured to measure the speed and the acceleration of the vehicle under test in real time, and feed the measured speed and acceleration back to the running environment virtual simulation subsystem, so as to update the running state of the vehicle under test in real time.
Optionally, the environmental chamber subsystem includes an environmental chamber and an environmental chamber console; the rotary drum test bed is arranged in the environment cabin, and the environment cabin control platform is used for controlling the environment cabin to simulate the running environment according to the running environment provided by the running environment virtual simulation subsystem.
Optionally, the environmental chamber comprises: the system comprises a temperature and humidity adjusting module, a windward speed simulation fan and a sunlight intensity simulation illuminator; the temperature and humidity adjusting module, the windward speed simulating fan and the sunlight intensity simulating illuminator are all connected with the environmental cabin control console, and the temperature and humidity adjusting module is used for adjusting the temperature and humidity of air in the environmental cabin; the windward speed simulation fan is used for adjusting the windward speed of the vehicle; the sunshine intensity simulation illuminator is used for simulating the sunshine intensity of the vehicle.
Optionally, the environmental chamber is further provided with an air inlet and an air outlet.
Optionally, the running environment virtual simulation subsystem comprises a running environment virtual simulation subsystem control console and a display screen, the running environment virtual simulation subsystem control console is arranged outside the environment cabin, the display screen is arranged right in front of the vehicle to be tested, and the running environment virtual simulation subsystem control console is used for performing real-time simulation on a running scene of the vehicle to be tested and displaying the running scene through the display screen; and the running environment virtual simulation subsystem control console is also used for sending the simulated running scene to the intelligent thermal management system of the tested vehicle for intelligent control.
Optionally, an additional steering wheel is arranged on the steering wheel of the vehicle to be tested and used for outputting a vehicle steering signal expected by the driver to the running environment virtual simulation subsystem.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects:
different from the traditional vehicle environment test cabin, the test bench of the intelligent thermal management system of the electric vehicle disclosed by the invention combines the vehicle intelligent simulation technology with the environment cabin technology and the rotary drum test technology. The environmental chamber can control and adjust environmental parameters such as the temperature, the humidity, the sunshine, the windward speed of the vehicle and the like in real time according to the information provided by the driving environment simulation subsystem. In addition, in order to realize the normal running function of the vehicle, the invention adopts a rotary drum test bed to consume the kinetic energy generated by the wheels and simulate the running resistance caused by different road conditions and vehicle speeds. Different from the traditional rotary drum test system, the rotary drum test subsystem in the invention can perform real-time information interaction with the driving environment simulation subsystem in the invention, so as to adjust the resistance characteristic of the rotary drum in real time according to different simulation scenes and realize real-time update of the simulated vehicle speed in the virtual driving environment. The invention breaks through the bottleneck that the traditional environmental experiment chamber can not realize the intelligent networking technology, provides possibility for realizing the bench test of the intelligent thermal management system, and provides necessary technical support for the design, debugging and verification of the intelligent thermal management system.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
FIG. 1 is a schematic structural diagram of a test bench of an intelligent thermal management system of an electric vehicle according to an embodiment of the invention;
FIG. 2 is a schematic diagram of electrical connections of an intelligent thermal management system of an electric vehicle according to an embodiment of the invention;
FIG. 3 is a diagram illustrating the transmission of parameters of subsystems according to an embodiment of the present invention.
Description of the symbols: 1. a vehicle under test; 2. an environmental chamber; 3. an environmental chamber console; 4. a drum console; 5. a running environment virtual simulation subsystem console; 6. simulating a fan at the windward speed; 7. a display screen; 8. a sunlight intensity simulation illuminator; 9. an air inlet; 10. an air outlet; 11. a rotary drum test bed.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to meet the test requirements of the intelligent thermal management system of the electric automobile, the intelligent networking technology is combined with the bench test technology of the traditional thermal management system of the electric automobile, the generation and the output of traffic information such as a vehicle running planning path, a current traffic flow state, a traffic light state in a front path and the like are realized through the virtual running environment simulation technology, the control of the external environment temperature, the humidity, the illumination intensity and the windward speed of the vehicle is realized through the environment cabin technology, the simulation of the running resistance of the vehicle and the measurement of the running parameters are realized through the rotary drum test bench, and the effective simulation of the whole vehicle test environment is further realized through the information interaction and the coordination control among the subsystems.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
As shown in fig. 1, the whole test bed is composed of a running environment virtual simulation subsystem, a rotary drum test subsystem, an environment cabin subsystem and a vehicle to be tested 1. The tested vehicle 1 is an electric automobile equipped with an intelligent thermal management system; the driving environment virtual simulation subsystem comprises a driving environment virtual simulation subsystem console 5 and a display screen 7. The rotary drum test subsystem comprises a rotary drum test bed 11 and a rotary drum control platform 4; the environmental chamber subsystem comprises an environmental chamber 2 and an environmental chamber console 2, the environmental chamber 2 comprises: temperature humidity control module, upwind speed of a motor vehicle simulation fan 6 and sunshine intensity simulation illuminator 8, environment cabin 2 still is provided with air intake 9 and air outlet 10.
The tested vehicle 1 is arranged on the rotary drum test bed 11, the rotary drum test bed 11 is arranged inside the environment cabin 2, the display screen 7 of the running environment virtual simulation subsystem is arranged in the environment cabin 2 in front of the tested vehicle 1, and the running environment virtual simulation subsystem control platform 5, the rotary drum test bed 11 control platform and the environment cabin control platform 2 are arranged outside the environment cabin. Communication connection relations among all components of the system are shown in fig. 2, and the running environment virtual simulation subsystem control console 5, the rotary drum test bed 11 control console, the environment cabin control console 2 and the thermal management controller of the tested vehicle 1 are respectively in communication connection with the gateway in an Ethernet mode and carry out information transmission through the gateway.
The parameter transfer relationship between the subsystems is shown in fig. 3. The driving environment virtual simulation subsystem can simulate the driving scene of the vehicle in real time and provide virtual driving road, surrounding traffic flow, traffic lights and other traffic environment information. On one hand, the information is presented to the driver through the display screen 7 to provide a basis for the driving operation of the driver, and on the other hand, the information is output to the intelligent thermal management system controller of the tested vehicle, so that the controller can intelligently control the thermal management system of the tested vehicle 1 according to the information. Meanwhile, the driving environment virtual simulation subsystem can also simulate road information such as the gradient and the road surface adhesion coefficient of a scene, and transmit the parameters to the rotary drum control console 4 in real time.
The rotary drum control platform 4 adjusts the operation parameters of the rotary drum test bed 11 in real time according to the information such as the gradient and the road adhesion coefficient output by the running environment virtual simulation subsystem so as to simulate the running resistance of the vehicle; the rotary drum test bed 11 simultaneously feeds back parameters such as vehicle speed, acceleration and the like measured in real time to the running environment virtual simulation subsystem so as to update the running state of the simulated vehicle in real time.
The environmental cabin control console 2 adjusts the temperature and humidity of the air in the cabin through the air temperature and humidity adjusting module according to running environment information such as sunshine intensity, environmental temperature, humidity and vehicle speed in a running scene provided by the running environment virtual simulation subsystem, adjusts the windward wind speed of the vehicle through the windward vehicle speed simulation fan 6, and simulates the sunshine intensity of the vehicle through the sunshine intensity simulation lamp 8.
The working principle of the invention is as follows:
the intelligent thermal management system of the electric automobile integrates the intelligent networking technology and the thermal management technology, can predict the future running speed of the automobile in real time according to the running path of the automobile and the surrounding traffic flow state, and intelligently manages the thermal management power of the passenger compartment, the power system and the battery of the automobile on the basis. Therefore, when a vehicle equipped with an intelligent thermal management system is subjected to a complete vehicle thermal management bench test, on one hand, the running environment such as the ambient temperature, humidity, illumination and the windward speed of the vehicle in the test environment of the vehicle needs to be controlled, and on the other hand, traffic information based on the intelligent networking technology such as a running planning path, the current traffic flow state and the state of a traffic light in a front path needs to be provided for the vehicle. In the invention, the traffic and environment information is virtualized by the driving environment virtual simulation subsystem and is provided to the intelligent thermal management system controller through information transmission, so that the intelligent thermal management system controller can intelligently control the system according to the information. Meanwhile, in the present invention, the environmental variables such as the running environmental temperature, humidity, illumination, and windward speed of the vehicle 1 under test are controlled by the environmental chamber 2. Similar to the traditional environment cabin, the environment cabin 2 of the invention realizes the control of the environment temperature through the heating/refrigeration of the air in the cabin, realizes the control of the environment humidity through the humidification/drying of the air in the cabin, and realizes the simulation of the environment illumination through the power adjustment of the sunlight simulation illuminator. However, unlike the conventional environmental chamber, the environmental chamber 2 of the present invention can control and adjust environmental parameters such as the temperature, humidity, sunshine, and windward speed of the vehicle in real time according to the information provided by the driving environment simulation subsystem. In addition, in order to realize the normal running function of the vehicle, the rotary drum test bed 11 is adopted in the invention to consume the kinetic energy generated by the wheels and simulate the running resistance caused by different road surface conditions and vehicle speeds. Different from the traditional rotary drum test system, the rotary drum test subsystem in the invention can perform real-time information interaction with the driving environment simulation subsystem in the invention, so as to adjust the resistance characteristic of the rotary drum in real time according to different simulation scenes and realize real-time update of the simulated vehicle speed in the virtual driving environment.
The specific embodiment is as follows:
the running environment virtual simulation subsystem consists of an industrial control computer, a display screen 7 and intelligent networking simulation software. The industrial control computer as a hardware carrier can run intelligent networking simulation software, sets a starting point, a terminal point and a running path of a current travel in the simulation software based on a map database, and sets traffic flow information such as traffic flow density and traffic light time sequence in the running path. After the test is started, the display screen 7 updates and displays the running environment information in real time according to the running condition of the vehicle, and presents the running environment information to the driver of the test vehicle. The driver operates the accelerator pedal and the brake pedal according to the driving environment condition displayed on the display screen 7 and his own driving experience to control the driving speed of the vehicle. Since the vehicle is placed on the drum test stand 11, the steering operation of the vehicle cannot be performed during the rotation of the drum. Therefore, it is necessary to attach a steering wheel above the original steering wheel of the vehicle. The additional steering wheel is arranged above the original steering wheel of the vehicle and can rotate around the original steering wheel of the vehicle. The driver can realize that the steering signal of the vehicle expected by the driver is output to the running environment virtual simulation subsystem on the premise of not rotating the original steering wheel of the vehicle by operating the additional steering wheel. Meanwhile, in the test process, parameters of a vehicle chassis are read in real time through CAN communication tools such as CANOE and the like, parameters such as the vehicle running speed, the acceleration and the like are sent to the running environment virtual simulation subsystem in real time, and the running speed in the simulation software is updated in real time according to the data and fed back to the display screen 7. During the running of the vehicle, the running resistance coefficient of the vehicle is changed due to the change of the road gradient and the road adhesion coefficient. In the intelligent internet simulation software, the road adhesion coefficient and the road gradient information on the driving path can be obtained in real time through a Geographic Information System (GIS) database and are sent to the rotary drum test bed 11 in an Ethernet network transmission mode, so that the driving resistance coefficient of the rotary drum test bed 11 is adjusted in real time to simulate the change condition of the road condition. Meanwhile, with the continuous change of the running path of the vehicle, the received solar illumination intensity and illumination angle, the environment conditions such as the environment temperature and humidity and the like can be changed to a certain extent, the parameters are extracted in the intelligent networking simulation software, and then the environment parameters are output to the environment cabin subsystem through transmission modes such as Ethernet network transmission and the like, so that the parameters such as the illumination intensity, the temperature, the humidity, the windward speed and the like of the environment cabin are adjusted in real time to simulate the change condition of the running environment of the vehicle. Meanwhile, the intelligent networking simulation software outputs input data required by intelligent control of the thermal management system, such as a driving planning path, planning path GIS data, traffic flow estimation data, traffic flow data at the current position of the vehicle and the like, to the intelligent thermal management controller of the vehicle through transmission modes, such as Ethernet network transmission and the like, so that the normal operation of the intelligent thermal management system controller of the electric automobile is ensured.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The principles and embodiments of the present invention have been described herein using specific examples, which are provided only to help understand the method and the core concept of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (8)
1. The utility model provides an electric automobile intelligence thermal management system test bench which characterized in that includes:
a vehicle under test, wherein the vehicle under test is an electric automobile equipped with an intelligent thermal management system;
the running environment virtual simulation subsystem is used for carrying out real-time simulation on a running scene of the tested vehicle, wherein the running scene comprises a road environment and a running environment;
the rotary drum testing subsystem is connected with the running environment virtual simulation subsystem and used for simulating the running resistance of the vehicle according to the road environment output by the running environment virtual simulation subsystem;
and the environment cabin subsystem is connected with the running environment virtual simulation subsystem and is used for simulating the running environment output by the running environment virtual simulation subsystem.
2. The test bench of claim 1, wherein the drum test subsystem comprises a drum test bench and a drum console; the tested vehicle is arranged on the rotary drum test bed; the rotary drum control platform is connected with the running environment virtual simulation subsystem and used for adjusting the rotary drum test platform in real time according to the road environment output by the running environment virtual simulation subsystem so as to simulate the running resistance of a vehicle.
3. The test bench of claim 2, wherein the rotary drum test bench is further configured to measure the speed and the acceleration of the vehicle under test in real time, and feed the measured speed and acceleration back to the driving environment virtual simulation subsystem to update the driving state of the vehicle under test in real time.
4. The testing bench of intelligent thermal management system of electric vehicle of claim 2, wherein the environmental chamber subsystem comprises an environmental chamber and an environmental chamber console; the rotary drum test bed is arranged in the environment cabin, and the environment cabin control platform is used for controlling the environment cabin to simulate the running environment according to the running environment provided by the running environment virtual simulation subsystem.
5. The testing bench of intelligent thermal management system of electric vehicle of claim 4, wherein the environmental chamber comprises: the system comprises a temperature and humidity adjusting module, a windward speed simulation fan and a sunlight intensity simulation illuminator; the temperature and humidity adjusting module, the windward speed simulating fan and the sunlight intensity simulating illuminator are all connected with the environmental cabin control console, and the temperature and humidity adjusting module is used for adjusting the temperature and humidity of air in the environmental cabin; the windward speed simulation fan is used for adjusting the windward speed of the vehicle; the sunshine intensity simulation illuminator is used for simulating the sunshine intensity of the vehicle.
6. The testing bench of electric vehicle intelligent heat management system according to claim 4, wherein the environmental chamber is further provided with an air inlet and an air outlet.
7. The test bench of the intelligent thermal management system of the electric vehicle according to claim 4, wherein the driving environment virtual simulation subsystem comprises a driving environment virtual simulation subsystem control console and a display screen, the driving environment virtual simulation subsystem control console is arranged outside the environment cabin, the display screen is arranged right in front of the tested vehicle, and the driving environment virtual simulation subsystem control console is used for simulating the driving scene of the tested vehicle in real time and displaying the driving scene through the display screen; and the running environment virtual simulation subsystem control console is also used for sending the simulated running scene to the intelligent thermal management system of the tested vehicle for intelligent control.
8. The testing bench of intelligent thermal management system of electric vehicle as claimed in claim 1, wherein an additional steering wheel is arranged on the steering wheel of the tested vehicle for outputting the vehicle steering signal desired by the driver to the driving environment virtual simulation subsystem.
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| CN113588288A (en) * | 2021-07-30 | 2021-11-02 | 吉林大学 | Transient air supply simulation system for automobile bench test and control method |
| CN115201594A (en) * | 2022-06-13 | 2022-10-18 | 中国第一汽车股份有限公司 | Whole-vehicle-level thermal runaway extension test device and method for power battery system |
| CN116380495A (en) * | 2023-06-06 | 2023-07-04 | 中汽研汽车检验中心（天津）有限公司 | Emission and energy consumption test method, system, equipment and medium based on digital twin |
| CN116380495B (en) * | 2023-06-06 | 2023-09-01 | 中汽研汽车检验中心（天津）有限公司 | Emission and energy consumption test method, system, equipment and medium based on digital twin |
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