CN206281648U - Multi-functional electric transmission testing stand - Google Patents

Abstract

The utility model discloses a kind of multi-functional electric transmission testing stand, including testing stand transmission system and test bed testing control system；Testing stand transmission system is fixed on engine, the first torque rotary speed sensor, generator, motor, the second torque rotary speed sensor, flywheel group, electric dynamometer on testing stand platform including horizontal interval；Engine power output shaft is connected by shaft coupling with generator power input shaft；Motor power output shaft is connected by the second torque rotary speed sensor with flywheel group, and flywheel group is connected with electric dynamometer power input shaft；Test bed testing control system includes industrial computer, power analyzer, torque rotary speed power measurement instruments, electric dynamometer switch board, generator control cabinet, measurement and control instrument.The utility model is using computer is flexible, quick dynamic analog advantage and carry out experimental study to electric automobile the characteristics of reliable accurate road real train test, has saved development cost, shortens the construction cycle.

Description

Multifunctional Electric Drive Test Bench

technical field

The utility model relates to the experimental research of the transmission system of an electric vehicle, in particular to a multifunctional electric transmission test bench.

Background technique

Electric vehicles have become a high-efficiency, low-emission green vehicle. It can not only effectively alleviate environmental pollution and energy shortages, but also point out the direction for the automotive industry to transform from traditional transmission methods to new electric transmission methods. Multifunctional electric vehicles The transmission table provides a test and research platform for the development and further exploration of electric vehicles.

At present, the research on electric vehicles at home and abroad mainly focuses on two aspects: industrial computer simulation test and road real vehicle test. The former uses a computer as a platform to carry out simulation experiments with the help of specific simulation software, and realizes the research on the power performance, control technology scheme and reliability of electric vehicles before development. It has the advantages of short cycle, fast operation speed and low cost. However, the computer simulation experiment is limited by the modeling accuracy of the system, the calculation method, and the actual external environment of the electric vehicle, so it cannot accurately reflect the real working conditions of the electric vehicle; while the latter can truly reflect the However, the rationality of electric vehicle design and vehicle performance can only be judged through road tests after the vehicle is successfully developed. It is difficult to give the optimal design scheme, so there are long development cycles and heavy workload. , high development costs and other defects.

Contents of the invention

The purpose of the utility model is to provide a multifunctional electric transmission test bench.

In order to achieve the above object, the utility model takes the following technical solutions:

The multifunctional electric transmission test bench described in the utility model includes a test bench transmission system and a test bench test control system;

The test bench transmission system includes an engine, a first torque speed sensor, a generator, a motor, a second torque speed sensor, a flywheel group, and an electric dynamometer fixed on the test bench platform at horizontal intervals; the engine power output The shaft is connected to one end of the torque shaft of the first torque speed sensor through a coupling, and the other end of the torque shaft of the first torque speed sensor is connected to the power input shaft of the generator through a coupling; the power output of the motor The shaft is connected to one end of the torsion shaft of the second torque speed sensor through a flexible coupling, and the other end of the torsion shaft of the second torque speed sensor is connected to one end of the wheel shaft of the flywheel group through a flexible coupling, and the flywheel The other end of the set wheel shaft is connected with the power input shaft of the electric dynamometer through a flexible coupling;

The test bench test control system includes an industrial computer, the RS232 interface of the industrial computer is connected to the signal output end of the power analyzer, and the signal input end of the power analyzer is connected to the output end of the motor power signal; the second torque speed sensor signal output The terminal is connected to the signal input end of the torque speed power measuring instrument through the CAN bus, and the signal output end of the torque speed power measuring instrument is connected to the industrial computer through the CAN bus; the control output end of the industrial computer is connected to the electronic clutch control input end of the flywheel group , the communication interface of the torque speed power measuring instrument is connected to the control cabinet of the electric dynamometer through the CAN bus; The encoder signal input end of the control cabinet is connected to the signal output end of the electric dynamometer; the engine accelerator pedal controller signal output end, the water temperature sensor signal output end, the intelligent fuel consumption meter signal output end, and the oil pressure sensor signal output end are respectively connected to the measurement and control The instrument signal input terminal is connected, the measurement and control instrument signal output terminal is connected to the industrial computer signal input terminal, the generator control cabinet signal output terminal is connected to the measurement and control instrument signal input terminal, the DC power output terminal of the generator control cabinet is connected to the battery pack The input terminal is connected, and the output terminal of the battery pack is connected with the input control terminal of the motor controller of the motor through the inverter.

The engine power output shaft is connected with one end of the first torque speed sensor torsion shaft through a coupling and the first support bearing body arranged on the test bench platform; the motor power output shaft is connected through a flexible coupling The second supporting bearing body arranged on the test bench platform is connected with one end of the torsion shaft of the second torque speed sensor.

The utility model draws on the advantages of the above-mentioned prior art, utilizes the flexible and fast dynamic simulation advantages of the computer and the reliable and accurate characteristics of the road actual vehicle test to carry out experimental research on the electric vehicle, and realizes the electric vehicle before the whole vehicle is developed. The power matching, motor performance, system control technology scheme, structural design, energy braking recovery, operating economy and mileage and other aspects are simulated and tested, and the optimal design scheme is found, while avoiding the traditional electric vehicle. The blindness of product development and the waste of development costs enable a comprehensive and thorough evaluation before the development of electric vehicle products, saving development costs and shortening the development cycle.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a circuit control block diagram of the utility model.

detailed description

The embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. This embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the scope of protection of the present invention is not limited to the following Described embodiment.

The multifunctional electric transmission test bench described in the utility model includes a test bench transmission system and a test bench test control system;

As shown in Figure 1, the test bench transmission system includes an engine 2 fixed on the test bench platform 1 at horizontal intervals, a first torque speed sensor 3, a generator 4, an electric motor 5, a second torque speed sensor 6, a flywheel Group 7, electric dynamometer 8; the power output shaft of the engine 2 is connected with one end of the torque shaft of the first torque speed sensor 3 through the shaft coupling 9, the first support bearing body 10, and the shaft coupling 11, and the first torque speed The other end of the torsion shaft of the sensor 3 is connected with the power input shaft of the generator 4 through a coupling 12; the power output shaft of the motor 5 is connected with the second One end of the torsion shaft of the torque speed sensor 6 is connected, and the other end of the second torque speed sensor 6 torsion shaft is connected with one end of the wheel shaft of the flywheel group 7 through a flexible coupling 16, and the other end of the flywheel group 7 wheel shaft is connected by a flexible coupling. The shaft coupling 17 is connected with the power input shaft of the electric dynamometer 8;

As shown in Figures 1 and 2, the test bench test control system includes an industrial computer, the RS232 interface of the industrial computer is connected to the signal output of the power analyzer, and the signal input of the power analyzer is connected to the output of the motor power signal; the second torque The signal output end of the speed sensor 6 is connected with the signal input end of the torque speed power measuring instrument through the CAN bus, and the signal output end of the torque speed power measuring instrument is connected with the industrial computer through the CAN bus; the control output end of the industrial computer is connected with the flywheel group 7 The electronic clutch control input terminal is connected, and the communication interface of the torque speed power measuring instrument is connected with the electric dynamometer control cabinet through the CAN bus; the output terminal of the frequency conversion controller of the electric dynamometer control cabinet is connected with the input control terminal of the electric dynamometer 8 connection, the encoder signal input end of the electric dynamometer control cabinet is connected to the signal output end of the electric dynamometer 8; the gas pedal controller signal output end of the engine 2, the water temperature sensor signal output end, the intelligent fuel consumption meter signal output end, The signal output terminal of the oil pressure sensor is connected to the signal input terminal of the measuring and controlling instrument, the signal output terminal of the measuring and controlling instrument is connected to the signal input terminal of the industrial computer, the signal output terminal of the generator control cabinet is connected to the signal input terminal of the measuring and controlling instrument, and the DC power supply of the generator control cabinet The output end is connected to the input end of the battery pack, and the output end of the battery pack is connected to the input control end of the motor controller of the motor 5 through the inverter.

The working principle of the utility model is briefly described as follows:

The engine 2, the first torque speed sensor 3, the generator 4, the motor 5, the second torque speed sensor 6, the flywheel group 7, and the electric dynamometer 8 constitute the transmission system of the test bench; the first support bearing body 10, the second The purpose of supporting the bearing body 14 is to ensure that the first torque speed sensor 3 and the second torque speed sensor 6 are not subject to changes in test data caused by changes in the coaxiality of the installed components caused by frequent replacement of test equipment, and at the same time, it can also avoid component The fluctuation phenomenon of the test data is caused by the bending moment of the first support bearing body 10 and the second support bearing body 14 due to the different shafts installed. The connection and transmission of the engine 2 and the generator 4 realizes the conversion of the chemical energy of the fuel to the mechanical energy, and then from the mechanical energy to the electrical energy. In order to reduce the drop of test data accuracy caused by the vibration of the transmission system of the test bench, the motor 5, the second torque speed sensor 6, the flywheel group 7 and the electric dynamometer 8 are all connected by flexible couplings 13, 15, 16,17 carry out connection transmission.

The first torque speed sensor 3 is connected with the industrial computer through the data acquisition instrument, so that the working characteristic data of the engine 2 can be monitored and collected in real time.

The second torque speed sensor 6 is used in conjunction with the torque speed power measuring instrument to monitor the parameters such as the torque, speed and power of the motor 5 in real time, and transmit the dynamic analog signal of the torque speed generated by the loading device to the inside of the industrial computer , data processing and analysis are carried out by the industrial computer. The loading size, direction and frequency of the electric dynamometer 8 are controlled by the electric dynamometer control cabinet, so as to realize the load simulation of the electric vehicle under actual working conditions. The simulation of the inertia of the electric vehicle is completed jointly by the flywheel set 7 and the electric dynamometer 8. When the simulated electric vehicle is in the acceleration condition, the electric dynamometer 8 only needs to simulate the slope resistance, rolling resistance and air resistance of the electric vehicle. parameters, omitting the calculation of electric vehicle acceleration resistance torque. If the simulated electric vehicle is in the deceleration condition, in addition to simulating the above three resistances, it is only necessary to simulate the braking torque of the electric vehicle. In addition, when the flywheel set 7 is used for the inertia test of the electric vehicle, the running stability of the transmission system of the test bench can be guaranteed, thereby avoiding data fluctuations. Therefore, when the flywheel set 7 is used to simulate the inertia of an electric vehicle, it not only simplifies the test bench test control system, but also improves the response speed and control accuracy of the test bench transmission system.

The utility model adopts the gas pedal controller of the engine 2 to adjust the opening of the gas pedal of the engine 2, and has the characteristics of sensitive response, high control precision, and fast response; the matching use of the water temperature sensor, the intelligent fuel consumption meter, the oil pressure sensor and the measuring and controlling instrument is realized The measurement and monitoring of engine 2 working temperature, fuel consumption and oil pressure are realized. At the same time, the industrial computer adopts a visual operation interface, which is convenient for man-machine dialogue and real-time monitoring of the system.

Claims (2)

1. A multifunctional electric transmission test bench, comprising a test bench transmission system and a test bench test control system; It is characterized in that: The test bench transmission system includes an engine, a first torque speed sensor, a generator, a motor, a second torque speed sensor, a flywheel group, and an electric dynamometer fixed on the test bench platform at horizontal intervals; the engine power output The shaft is connected to one end of the torque shaft of the first torque speed sensor through a coupling, and the other end of the torque shaft of the first torque speed sensor is connected to the power input shaft of the generator through a coupling; the power output of the motor The shaft is connected to one end of the torsion shaft of the second torque speed sensor through a flexible coupling, and the other end of the torsion shaft of the second torque speed sensor is connected to one end of the wheel shaft of the flywheel group through a flexible coupling, and the flywheel The other end of the set wheel shaft is connected with the power input shaft of the electric dynamometer through a flexible coupling; The test bench test control system includes an industrial computer, the RS232 interface of the industrial computer is connected to the signal output end of the power analyzer, and the signal input end of the power analyzer is connected to the output end of the motor power signal; the second torque speed sensor signal output The terminal is connected to the signal input end of the torque speed power measuring instrument through the CAN bus, and the signal output end of the torque speed power measuring instrument is connected to the industrial computer through the CAN bus; the control output end of the industrial computer is connected to the electronic clutch control input end of the flywheel group , the communication interface of the torque speed power measuring instrument is connected to the control cabinet of the electric dynamometer through the CAN bus; The encoder signal input end of the control cabinet is connected to the signal output end of the electric dynamometer; the engine accelerator pedal controller signal output end, the water temperature sensor signal output end, the intelligent fuel consumption meter signal output end, and the oil pressure sensor signal output end are respectively connected to the measurement and control The instrument signal input terminal is connected, the measurement and control instrument signal output terminal is connected to the industrial computer signal input terminal, the generator control cabinet signal output terminal is connected to the measurement and control instrument signal input terminal, the DC power output terminal of the generator control cabinet is connected to the battery pack The input terminal is connected, and the output terminal of the battery pack is connected with the input control terminal of the motor controller of the motor through the inverter. 2. The multifunctional electric transmission test bench according to claim 1, characterized in that: said engine power output shaft is connected with said first torque through a coupling and a first support bearing body arranged on the test bench platform. One end of the torsion shaft of the speed sensor is connected; the power output shaft of the motor is connected with one end of the torsion shaft of the second torque speed sensor through a flexible coupling and a second support bearing body arranged on the test bench platform.