System for testing electric automobile power system assembly

Abstract

The invention provides a system for testing an electric automobile power system assembly. The system comprises a computer module, a power source, CAN (Control Area Network) bus units, power controlling units, safety monitoring units, vehicle-mounted charger units, battery pack management units, motor controlling units, a motor unit, a first battery module and a second battery module. The motor unit comprises a first motor and a second motor, and rotors of the first motor and the second motor are mutually connected. According to the invention, two identical sets of the motor units, the motor controlling units, the battery pack management units and the vehicle-mounted charger units are combined together. By serially connecting two motors together, energy interacting in the motor unit is realized. Except for inherent operation loss in the system, energy is mutually converted and exchanged among the first battery module, the second battery module and the motor unit, thus the energy is maximally saved, meanwhile, loading testing, service life loading testing and function verifying for core power critical systems of two sets of new-energy automobiles are realized.

Description

Technical field [0001] The invention relates to a test system, in particular to a test system for an electric vehicle power system assembly. Background technique [0002] In recent years, as the development of electric vehicles continues to mature, the use of electric vehicles will become increasingly popular, and the resulting electric vehicle testing issues will also attract more and more attention. [0003] In the motor test system, the operator sets the measured parameter values ​​to simulate various characteristics of the motor in real time, such as motor no-load characteristic test, motor load test, motor torque, speed characteristics and efficiency determination, characteristic curve determination, locked-rotor torque Measurement, maximum working speed measurement, overspeed test, etc. Among them, the load of the motor control system is a power dynamometer, the motor drives the generator, and the electricity from the generator is fed back to the grid through the frequency c...

AI Technical Summary

Problems solved by technology

[0005] Motor controller, integrated power system controller, safety monitoring unit, first battery module, second battery module and battery management system battery pack management unit, on-board charger are the core components of the future new energy vehicle power system Vehicle safety, the test verification of these units is extremely complex and time-consuming, and all of them need to pass independent test verification. However, due to the complexity of the operating conditions of the vehicle power system, many system safety hazards and incomplete performance can only be integrated with the vehicle Finally, it can be further discovered after the integration test of the whole vehicle. Even so, due to the time limit of the integration test, many design defects need to be discovered by actual users during long-term and large-scale driving. This is usually caused by car recalls. The cost of financial loss and damage to brand value is often huge

[0006] It can be seen from the above that there has been some progress in testing the performance of the electric vehicle's motor system, battery pack management unit, and vehicle control system. Real-time testing of the control system while simulating the actual driving conditions while performing the loading test

At the same time, the test of the motor system requires a lot of manpower, which is not only inefficient, but also the difference in operating proficiency will lead to differences in the test process and test results

For the processing of test data, most of them are manually processed at present, and the processing of different experimenters will also lead to differences.

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