CN107976593B - Energy consumption test system in electric automobile operation process - Google Patents
Energy consumption test system in electric automobile operation process Download PDFInfo
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- CN107976593B CN107976593B CN201711042688.XA CN201711042688A CN107976593B CN 107976593 B CN107976593 B CN 107976593B CN 201711042688 A CN201711042688 A CN 201711042688A CN 107976593 B CN107976593 B CN 107976593B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
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Abstract
The invention discloses an energy consumption test system in the running process of an electric automobile, which comprises: the electric energy consumption detection subsystem is used for detecting and storing current and voltage signals of the power battery, and simultaneously calculating the voltage, the current, the capacitance consumption and the electric energy consumption of the power battery according to the current and voltage signals to obtain the influence of the energy recovery of the electric vehicle on the electric energy consumption of the electric vehicle; the chassis dynamometer system is mainly used for testing the output power, the driving torque and the vehicle speed of the automobile driving wheel and simulating the load borne by the automobile in the actual running process. The invention realizes real-time recording and analysis of energy consumption in the running process of the electric automobile, and solves the problems that only the electric energy output by the electric automobile is tested in the current electric automobile energy consumption test, and the influence of energy recovery on the energy consumption is neglected.
Description
Technical Field
The invention relates to an energy consumption test system in the running process of an electric automobile, in particular to a test system for testing the influence of braking energy on energy consumption in the running process of the electric automobile.
Background
As one of the best solutions for solving the problems of lack of petroleum resources and environmental pollution caused by automobiles, electric automobiles have been focused by countries in the world, however, the electric automobiles consume large electric energy, and the development of pure electric automobiles is restricted by short driving range. Therefore, reducing the electric energy consumption of the electric automobile and improving the driving range are one of effective means for promoting the popularization of the pure electric automobile. The energy consumption test system in the running process of the electric automobile can collect and record the voltage and the current output by the power battery of the electric automobile in real time, realize real-time recording and analysis of energy consumption data and also can realize analysis of the influence of energy recovery on the electric automobile energy consumption in the running process of the electric automobile. At present, most of electric energy consumption testing systems for electric automobiles only test the electric energy output by a driving wheel in the running process of the electric automobiles, and the problem of influence of energy recovery on energy consumption is ignored. Therefore, the energy consumption testing system in the running process of the electric automobile is provided.
Disclosure of Invention
Aiming at the defects of the prior art, the invention designs an energy consumption test system in the running process of an automobile, and aims to solve the problem that the energy consumption is affected by the lack of energy recovery in the running process of the electric automobile in the existing energy consumption test system of the electric automobile.
In order to solve the technical problems, the invention adopts the following technical scheme:
an energy consumption testing system in the running process of an electric automobile, which comprises: an electric energy consumption detection subsystem and a chassis dynamometer system,
the electric energy consumption detection subsystem is used for detecting and storing current and voltage signals of the power battery, and calculating the voltage, current, capacitance consumption and electric energy consumption of the power battery according to the current and voltage signals to obtain the influence of energy recovery on the electric energy consumption of the electric automobile in the running process of the electric automobile;
the chassis dynamometer system is mainly used for testing the output power, the driving torque and the vehicle speed of the automobile driving wheel and simulating the load borne by the automobile in the actual running process.
Furthermore, the electric energy consumption detection subsystem comprises a high-voltage data acquisition module, a low-voltage data acquisition module, a current clamp, a power supply synchronization line and a computer, wherein the power supply synchronization line connects the high-voltage data acquisition module and the low-voltage data acquisition module to enable the high-voltage data acquisition module and the low-voltage data acquisition module to receive external power supply for synchronization, and the low-voltage data acquisition module is connected with a low-voltage power supply of the electric automobile through a power supply line of the vehicle power supply; the low-voltage data acquisition module is also connected with the high-voltage data acquisition module through a signal synchronization line and is used for ensuring the synchronization of current and voltage signals received by the computer; the low-voltage data acquisition module is connected with the anode of the high-voltage wire of the battery pack through a current clamp, and is used for acquiring a current signal output by the battery pack in real time, processing the current signal through an A/D (analog/digital) converter and then transmitting the current signal to a computer through a USB (universal serial bus) connecting wire; the high-voltage data acquisition module is connected with the high-voltage positive electrode and the high-voltage negative electrode of the battery pack through the crocodile clip and is used for acquiring a voltage signal output by the battery pack in real time, processing the voltage signal through the A/D converter and then transmitting the voltage signal to a computer through a USB (universal serial bus) connecting line; and the computer is used for analyzing the influence of energy recovery on the electric energy consumption of the electric automobile in the running process of the electric automobile according to the output current signal and the output voltage signal of the battery pack.
Further, the computer comprises a data acquisition module and a data analysis module, wherein the data acquisition module is used for receiving the battery pack output current signal and the battery pack output voltage signal after conversion processing, and the data analysis module is used for calculating the voltage, the current, the capacitance consumption and the electric energy consumption of the power battery according to the battery pack output current signal and the battery pack output voltage signal and analyzing the influence of energy recovery on the electric energy consumption of the electric automobile in the running process of the electric automobile.
Further, the chassis dynamometer system comprises a road simulation system, a signal acquisition and control system, a safety guarantee system and a guide system, wherein the roller path simulation system is used for simulating the road condition in actual running; the signal acquisition and control system is used for acquiring speed and driving force signals of the electric automobile in the driving process; the safety guarantee system and the guide system are used for guaranteeing the normal operation of the chassis dynamometer system.
Further, the road simulation system comprises a roller device, a power absorption device and an inertia simulation device, wherein the roller device is used for supporting wheels and providing a set rotating speed; the power absorption device is used for setting corresponding parameters for simulating air resistance borne by the electric automobile in operation, rolling resistance of a non-driving wheel and climbing resistance; the inertia simulation device is used for simulating the rotational inertia of the rotating mass of the automobile and the inertia of the translation mass of the automobile.
Furthermore, the signal acquisition and control system comprises a vehicle speed signal acquisition device, a driving force signal acquisition device and a control system, wherein the vehicle speed signal acquisition device is used for acquiring a rotating speed signal during the operation of the electric vehicle, and the driving force signal acquisition device is used for acquiring a driving force signal during the operation of the electric vehicle; the control system is used for controlling the roller device, the inertia simulation device and the power absorption device.
Compared with the prior art, the invention can collect and record the voltage and current output by the power battery of the electric automobile in real time, realize the real-time recording and analysis of energy consumption in the running process of the electric automobile, and also can realize the analysis of the influence of energy recovery on the electric energy consumption of the electric automobile in the running process of the electric automobile. The electric energy consumption testing system solves the problems that most of the existing electric automobile electric energy consumption testing systems only test the electric energy output by the driving wheel in the running process of the electric automobile, and influence of energy recovery on energy consumption is neglected.
Drawings
FIG. 1 is a schematic structural diagram of an energy consumption testing system during an electric vehicle operation process according to the present invention.
FIG. 2 is a schematic diagram of an electric energy consumption detection subsystem of an electric vehicle according to the present invention.
FIG. 3 is a schematic computer diagram of the present invention.
FIG. 4 is a schematic structural diagram of a chassis dynamometer system according to the present invention.
Fig. 5 is a schematic diagram of a road simulation structure according to the present invention.
Fig. 6 is a schematic structural diagram of a signal acquisition and control system according to the present invention.
Detailed Description
The technical solutions in the examples of the present invention will be clearly and completely described below with reference to the drawings in the examples of the present invention, and it is obvious that the described examples are only a part of the examples of the present invention, and not all examples. All other examples, which can be obtained by a person skilled in the art without making any creative effort based on the examples in the present invention, belong to the protection scope of the present invention.
As shown in fig. 1, an energy consumption testing system during the operation of an electric vehicle includes: an electric energy consumption detection subsystem and a chassis dynamometer system,
the electric energy consumption detection subsystem is used for detecting and storing current and voltage signals of the power battery, and calculating the voltage, current, capacitance consumption and electric energy consumption of the power battery according to the current and voltage signals to obtain the influence of energy recovery on the electric energy consumption of the electric automobile in the running process of the electric automobile;
the chassis dynamometer system is mainly used for testing the output power, the driving torque and the vehicle speed of the automobile driving wheel and simulating the load borne by the automobile in the actual running process.
As shown in fig. 2, the electric energy consumption detection subsystem includes a high voltage data acquisition module, a low voltage data acquisition module, a current clamp, a power synchronization line, and a computer, wherein the power synchronization line connects the high voltage data acquisition module and the low voltage data acquisition module, so that the high voltage data acquisition module and the low voltage data acquisition module receive external power supply for synchronization, and the low voltage data acquisition module is connected with a low voltage power supply of the electric vehicle through a vehicle power supply line; the low-voltage data acquisition module is also connected with the high-voltage data acquisition module through a signal synchronization line and is used for ensuring the synchronization of current and voltage signals received by the computer; the low-voltage data acquisition module is connected with the anode of the high-voltage wire of the battery pack through a current clamp, and is used for acquiring a current signal output by the battery pack in real time, processing the current signal through an A/D (analog/digital) converter and then transmitting the current signal to a computer through a USB (universal serial bus) connecting wire; the high-voltage data acquisition module is connected with the high-voltage positive electrode and the high-voltage negative electrode of the battery pack through the crocodile clip and is used for acquiring a voltage signal output by the battery pack in real time, processing the voltage signal through the A/D converter and then transmitting the voltage signal to a computer through a USB (universal serial bus) connecting line; and the computer is used for analyzing the influence of energy recovery on the electric energy consumption of the electric automobile in the running process of the electric automobile according to the output current signal and the output voltage signal of the battery pack.
As shown in fig. 3, the computer includes a data acquisition module and a data analysis module, the data acquisition module is configured to receive the battery output current signal and the battery output voltage signal after the conversion processing, and the data analysis module is configured to calculate voltage, current, capacitance consumption and electric energy consumption of the power battery according to the battery output current signal and the battery output voltage signal, and analyze an influence of energy recovery on electric energy consumption of the electric vehicle during an operation process of the electric vehicle.
As shown in fig. 4, the chassis dynamometer system includes a road simulation system, a signal acquisition and control system, a safety guarantee system and a guidance system, and the road simulation system is used for simulating the road condition in actual driving; the signal acquisition and control system is used for acquiring speed and driving force signals of the electric automobile in the driving process; the safety guarantee system and the guide system are used for guaranteeing the normal operation of the chassis dynamometer system.
As shown in fig. 5, the road simulation system includes a roller device, a power absorption device and an inertia simulation device, the roller device is used for supporting wheels and providing a set rotating speed, and during testing, the driving wheel of the electric automobile runs onto the roller device of the road simulation system and is fixed on the roller device which is kept at the right position; the power absorption device is used for setting corresponding parameters for simulating air resistance borne by the electric automobile in operation, rolling resistance of a non-driving wheel and climbing resistance; the inertia simulation device is used for simulating the rotational inertia of the rotating mass of the automobile and the inertia of the translation mass of the automobile.
As shown in fig. 6, the signal collecting and controlling system includes a vehicle speed signal collecting device, a driving force signal collecting device and a controlling system, the vehicle speed signal collecting device is used for collecting a rotation speed signal during the operation of the electric vehicle, and the driving force signal collecting device is used for collecting a driving force signal during the operation of the electric vehicle; the control system is used for controlling the roller device, the inertia simulation device and the power absorption device.
The electric automobile comprises a driving motor, a power battery, an automobile controller, an automobile power system assembly and the like, wherein the power battery provides power for the running of the electric automobile, and when the electric automobile runs under a small load, the electric automobile mainly uses medium current to continuously supply power for the driving motor and drives the electric automobile to run through the driving motor. When the electric automobile is started or accelerated, the electric automobile mainly supplies power to a driving motor for a short time at a large current. However, when the electric vehicle is braked, the drive motor functions as a generator to charge the power battery, thereby recovering the braking energy of the electric vehicle.
The design idea and the advantages of the embodiment are as follows:
firstly, analysis is carried out, the energy consumption test system of the traditional automobile is imperfect, the influence of energy recovery on energy consumption is ignored, in order to solve the problem, an electric energy consumption detection subsystem is added to the original system, voltage and current output by a power battery of the electric automobile can be collected and recorded in real time, and the influence of energy recovery on electric automobile electric energy consumption in the running process of the electric automobile is analyzed. The electric energy consumption detection subsystem applies high-precision measurement technology and comprises a measuring device with various data modules. The system solves the technical problems of electromagnetic compatibility and system reliability in a strong interference environment, and adopts a large-capacity data processing and compression storage technology to realize the miniaturization vehicle-mounted detection instrument. And test verification, namely selecting a test electric automobile to run under a specific working condition, acquiring and recording the voltage and the current output by the power battery in real time by the electric energy consumption detection subsystem, and analyzing the influence of the energy recovery of the electric automobile on the energy consumption.
The test process of the embodiment includes:
1. and checking whether the electric energy consumption detection subsystem, the chassis dynamometer system and the tire pressure of the test vehicle meet the test requirements, if so, driving the electric vehicle driving wheel to a roller device of the road simulation system, and fixing the electric vehicle driving wheel at the correct position.
2. Corresponding parameters are set in the power absorption device for simulating air resistance, rolling resistance, climbing resistance and the like of a non-driving wheel and the like borne by the electric automobile in operation. And a vehicle speed signal acquisition device and a driving force signal acquisition device of the information acquisition and control system are started to respectively acquire speed and driving force signals in the running process of the electric vehicle, and a safety guarantee system and a guide system ensure the normal operation of a chassis dynamometer system.
3. And detaching the cathode of the low-voltage power supply of the whole vehicle, waiting for 5 minutes to enable the low-voltage electric appliance to finish discharging, and then detaching the maintenance switch of the high-voltage power supply.
4. The high-voltage data acquisition module and the low-voltage data acquisition module are connected through a power supply synchronization line 7, and the low-voltage data acquisition module is connected with a low-voltage power supply of the electric automobile through a power supply line of the vehicle. The low-voltage data acquisition module is connected with the positive pole of the high-voltage wire of the battery pack through the current clamp. The high-voltage data acquisition module is connected with the high-voltage positive electrode and the high-voltage negative electrode of the battery pack through the alligator clip. The low-voltage data acquisition module is connected with the high-voltage data acquisition module through a signal synchronization line.
5. The high-voltage data acquisition module and the low-voltage data acquisition module are respectively connected with a computer through a USB connecting wire.
6. Starting a computer in the electric energy consumption detection subsystem, and starting a data acquisition module and a data analysis module.
7. And controlling the electric automobile by the tester according to the set running condition, and displaying the change of the corresponding power parameter on an interface set by the computer.
8. And (4) finishing the test working condition, closing the electric energy consumption detection subsystem and the chassis dynamometer system, sorting the test equipment, and finishing the test.
The above examples of the present invention are merely examples for clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (3)
1. An energy consumption test system in the running process of an electric automobile is characterized by comprising: the system comprises an electric energy consumption detection subsystem and a chassis dynamometer system, wherein the electric energy consumption detection subsystem comprises a high-voltage data acquisition module, a low-voltage data acquisition module, a current clamp, a power supply synchronization line and a computer, the high-voltage data acquisition module and the low-voltage data acquisition module are connected by the power supply synchronization line, so that the high-voltage data acquisition module and the low-voltage data acquisition module receive external power supply for synchronization, and the low-voltage data acquisition module is connected with a low-voltage power supply of the electric automobile through a power supply line of the automobile; the low-voltage data acquisition module is also connected with the high-voltage data acquisition module through a signal synchronization line and is used for ensuring the synchronization of current and voltage signals received by the computer; the low-voltage data acquisition module is connected with the anode of the high-voltage wire of the battery pack through a current clamp, and is used for acquiring a current signal output by the battery pack in real time, processing the current signal through an A/D (analog/digital) converter and then transmitting the current signal to a computer through a USB (universal serial bus) connecting wire; the high-voltage data acquisition module is connected with the high-voltage positive electrode and the high-voltage negative electrode of the battery pack through the crocodile clip and is used for acquiring a voltage signal output by the battery pack in real time, processing the voltage signal through the A/D converter and then transmitting the voltage signal to a computer through a USB (universal serial bus) connecting line; the computer is used for analyzing the influence of energy recovery on the electric energy consumption of the electric automobile in the running process of the electric automobile according to the battery pack output current signal and the battery pack output voltage signal; the computer comprises a data acquisition module and a data analysis module, wherein the data acquisition module is used for receiving the battery pack output current signal and the battery pack output voltage signal after conversion processing, and the data analysis module is used for calculating the voltage, the current, the capacitance consumption and the electric energy consumption of the power battery according to the battery pack output current signal and the battery pack output voltage signal and analyzing the influence of energy recovery on the electric energy consumption of the electric vehicle in the running process of the electric vehicle;
the electric energy consumption detection subsystem is used for detecting and storing current and voltage signals of the power battery, and calculating the voltage, current, capacitance consumption and electric energy consumption of the power battery according to the current and voltage signals to obtain the influence of energy recovery on the electric energy consumption of the electric automobile in the running process of the electric automobile;
the chassis dynamometer system is used for testing the output power, the driving torque and the vehicle speed of the automobile driving wheel and simulating the load borne by the automobile in the actual running process; the chassis dynamometer system comprises a road simulation system, a signal acquisition and control system, a safety guarantee system and a guide system, wherein the road simulation system is used for simulating the road condition in actual driving; the signal acquisition and control system is used for acquiring speed and driving force signals of the electric automobile in the driving process; the safety guarantee system and the guide system are used for guaranteeing the normal operation of the chassis dynamometer system; corresponding parameters are set in the power absorption device for simulating air resistance borne by the electric automobile in operation, rolling resistance of a non-driving wheel and climbing resistance; a vehicle speed signal acquisition device and a driving force signal acquisition device of the information acquisition and control system respectively acquire speed and driving force signals in the running process of the electric vehicle; discharging the low-voltage electrical appliance by the cathode of the low-voltage power supply of the whole vehicle, and then disassembling a maintenance switch of the high-voltage power supply; the low-voltage data acquisition module is connected with a low-voltage power supply of the electric automobile through a vehicle power supply line; starting a computer in the electric energy consumption detection subsystem, and starting a data acquisition module and a data analysis module; and controlling the electric automobile by the tester according to the set running condition, and displaying the change of the corresponding power parameter on an interface set by the computer.
2. The system for testing the energy consumption of the electric automobile in the running process according to claim 1, wherein: the road simulation system comprises a roller device, a power absorption device and an inertia simulation device, wherein the roller device is used for supporting wheels and providing set rotating speed; the power absorption device is used for setting corresponding parameters for simulating air resistance borne by the electric automobile in operation, rolling resistance of a non-driving wheel and climbing resistance; the inertia simulation device is used for simulating the rotational inertia of the rotating mass of the automobile and the inertia of the translation mass of the automobile.
3. The energy consumption testing system in the running process of the electric automobile according to claim 1, wherein the signal acquisition and control system comprises a vehicle speed signal acquisition device, a driving force signal acquisition device and a control system, the vehicle speed signal acquisition device is used for acquiring a rotating speed signal in the running process of the electric automobile, and the driving force signal acquisition device is used for acquiring a driving force signal in the running process of the electric automobile; the control system is used for controlling the roller device, the inertia simulation device and the power absorption device.
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| CN109061339A (en) * | 2018-07-06 | 2018-12-21 | 山东交通学院 | A kind of the energy consumption measurement system and measurement method of electric car |
| CN110850190B (en) * | 2018-07-27 | 2021-02-05 | 深圳市康士柏实业有限公司 | Power performance testing method for electric automobile |
| CN110320051A (en) * | 2019-06-10 | 2019-10-11 | 辽宁龙马安泰网络技术有限责任公司 | The instantaneous driving wheel power detecting method of running car |
| CN110608895B (en) * | 2019-09-12 | 2022-05-31 | 吉林省瑞普测控技术有限公司 | Simulation dynamic performance test system for finished automobile brake system |
| CN113029592A (en) * | 2021-03-11 | 2021-06-25 | 奇瑞新能源汽车股份有限公司 | Electric automobile testing method and device |
| CN114509282B (en) * | 2022-03-28 | 2023-05-16 | 东风汽车集团股份有限公司 | Energy efficiency evaluation method and system for braking energy recovery system of hybrid electric vehicle based on whole vehicle working condition |
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| CN101694417B (en) * | 2009-10-14 | 2011-12-28 | 清华大学 | Dynamic performance test method of vehicle electric driving system |
| KR101047036B1 (en) * | 2009-10-16 | 2011-07-06 | 한국과학기술원 | Online electric vehicle energy consumption measurement device and method thereof |
| CN102620942A (en) * | 2012-04-23 | 2012-08-01 | 山东大学 | Matching evaluation test bed of pure electric automobile power driving system |
| CN103196676B (en) * | 2013-04-24 | 2015-05-06 | 山东大学 | Multi-system distributed electric vehicle performance test bed and multi-system distributed electric vehicle performance test method |
| CN104266846A (en) * | 2014-10-15 | 2015-01-07 | 南京工业大学 | Electric automobile braking energy recovery test bench |
| CN105136483B (en) * | 2015-10-13 | 2018-08-03 | 中国重汽集团济南动力有限公司 | A kind of pure electric automobile hardware in the loop test-rig and its test method |
| CN105631163A (en) * | 2016-01-30 | 2016-06-01 | 华南理工大学 | Electric vehicle power battery energy consumption hardware online simulation method and device |
| CN105890908B (en) * | 2016-04-11 | 2019-08-02 | 北京新能源汽车股份有限公司 | Energy consumption analysis system and method for electric automobile |
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