Delivery test system and method for motor for pure electric vehicle

Abstract

The invention relates to a motor test system, which comprises a test controller, an inverter, a power tester, a rotating speed and torque sensor, a direct-current voltage stabilization power supply cabinet and a personal computer (PC). The invention also provides a method for testing a motor for an electric vehicle based on the test system. According to the test method, a whole rack test system is controlled through controller area network (CAN) communication; a rotating speed and torque measurement command is sent based on standard test data; rotating speed and torque data is fed back in real time by the rotating speed and torque sensor; and the feedback data is compared with standard data to judge whether the external characteristic of the motor is qualified. By the test system and the test method, the external characteristic of the tested motor can be detected accurately and efficiently, so that the delivery quality of the motor can be guaranteed; furthermore, the test process is high in automation degree and precise in test; and the method is easy to operate and low in cost, and has very wide application prospect.

Description

technical field [0001] The invention relates to the field of off-line testing of electric motors, in particular to a system and method for off-line testing of electric motors applied to pure electric vehicles. Background technique [0002] With the development of society, low-carbon vehicles are more and more respected by people, and electric vehicles are a kind of low-carbon vehicles that are currently being researched and have broad development prospects. Among them, the motor drive system is a very important part of the research and development of electric vehicles. The test work is an important means to improve and verify the performance of the motor drive system, especially the permanent magnet synchronous motor, which is widely used in pure electric vehicles and vehicles due to its advantages of high power density, high efficiency, and small rotor loss. On pure electric vehicles, but in order to achieve good power characteristics, it is essential to carry out offline i...

AI Technical Summary

Problems solved by technology

[0002] With the development of society, low-carbon vehicles are more and more respected by people, and electric vehicles are a kind of low-carbon vehicles that are currently being researched and have broad development prospects. Among them, the motor drive system is a very important part of the research and development of electric vehicles. The test work is an important means to improve and verify the performance of the motor drive system, especially the permanent magnet synchronous motor, which is widely used in pure electric vehicles and vehicles due to its advantages of high power density, high efficiency, and small rotor loss. On pure electric vehicles, but in order to achieve good power characteristics, it is essential to carry out offline inspection of this kind of motor, and because there are differences in the consistency of the processing technology of the motor, so in order to verify whether the processing technology meets the consistency condition , it is also necessary to test each motor off-line to determine whether it is a qualified product, and then to achieve the consistency of product loading. Therefore, it is of great significance to conduct a professional off-line test on the external characteristics of electric vehicle motors. It is a necessary step in the manufacture of motors, and the pre-delivery testing of motors in the prior art is generally limited to simple observation of operating conditions, with few test parameters and low test accuracy, making it difficult to guarantee the pass rate of motors in actual use

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