Test device and test system for electric vehicle thermal management system

Abstract

The embodiment of the invention discloses a test device and test system for an electric vehicle thermal management system. The system comprises a button array which is used for receiving a user-triggered test instruction, a control module which is used for converting a test instruction into a corresponding execution piece operation command of the thermal management system, a control area network (CAN) communication module which is used for encapsulating the execution piece operation command of the thermal management system, and a light emitting diode matrix which is used for displaying a feedback result. A first CAN packet is sent to an electric vehicle controller through an onboard diagnostics (OBD) interface, so that the electric vehicle controller operating in a test mode analyzes the execution piece operation command of the thermal management system from the first CAN packet and sends the execution piece operation command of the thermal management system to a thermal management system execution piece. The feedback result provided by the thermal management system execution piece is received by an OBD interface from the electric vehicle controller. According to the invention, the test convenience can be improved.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a test device and a test system for a thermal management system of an electric vehicle. Background technique [0002] Energy shortages, oil crises and environmental pollution are intensifying, which have a huge impact on people's lives and are directly related to the sustainable development of the country's economy and society. All countries in the world are actively developing new energy technologies. As a new energy vehicle with reduced oil consumption, low pollution, and low noise, electric vehicles are considered to be an important way to solve the energy crisis and environmental degradation. Hybrid vehicles take into account the advantages of pure electric vehicles and traditional internal combustion engine vehicles at the same time. On the premise of meeting the requirements of vehicle power and mileage, it effectively improves fuel economy and reduces emissions. It is...

AI Technical Summary

Problems solved by technology

[0007] The first method is to inspect before loading, which cannot guarantee that the thermal management system executive parts will not be damaged during the loading process, and may cause some thermal management system executive parts to fail after loading due to misconnection of the control harness. normal work

The disadvantage of the second method is that it is necessary to repeatedly modify the controller program so that the whole vehicle runs in different thermal management modes, in order to verify whether all the thermal management system executive parts can operate normally, and the temporarily modified test program has not been strictly tested. The correctness of the modified program cannot be guaranteed, so the correctness of the detection of the thermal management system executive parts cannot be guaranteed

[0008] In short, in the prior art, either it is impossible to perform calibration after loading, or the controller program needs to be modified repeatedly, which has the disadvantage of low convenience

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