Multifunctional power electronics test system for electromobile

Abstract

The invention provides a multifunctional power electronics test system for electromobile. The system comprise a main controller and eight distributed modules, namely, a motor driving subsystem, a battery management subsystem, a power battery pack, a simulated battery pack, a charging device, a DC / DC / AC module, a motor measuring device and an adjustable load, and each distributed module comprises a microcontroller; the main controller controls the microcontrollers of the distributed module to control the whole system; the microcontrollers of the distributed modules is in data communication with the main controller to upload data to the main controller; the battery management system, the power battery pack, the simulated battery pack and the charging device form a charging closed-loop control subsystem; the motor driving subsystem, the adjustable load and the motor measuring device form a motor closed-loop control subsystem; and the main controller receives and records state and power feature data of the charging device, the power / simulation battery pack, the battery management subsystem and the motor driving subsystem, and displays, calculates and analyzes the data in real time.

Description

technical field [0001] The invention relates to the technical field of electric vehicles, in particular to performance detection of power batteries and motor drives of electric vehicles, and in particular to a multifunctional testing system for power electronics of electric vehicles. Background technique [0002] Some key technologies in the research and development of new energy vehicles, such as parameter matching and optimization of control strategies, have been in the simulation stage, and further verification requires a real test environment; some key technologies can only be analyzed qualitatively and predictively , or initially encountered, how to solve it in the end still needs certain means and technical platforms. In particular, battery packs and their management systems and motor control systems are one of the key technologies of new energy vehicles, and their performance tests need to be completed on a real platform. [0003] Existing related testing research or...

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Problems solved by technology

[0003] Existing related testing research or products, such as "Power Battery Pack Performance Test System for Electric Vehicles", from "Power Supply Technology" No. 11, 2004; "Electric Vehicle Power Drive System Simulation Test Bench Rack", from Hunan Shengtong Technology Patent of the Group Co., Ltd., No. 201120491770.2 Chinese patent "Electric Vehicle Power Drive System Simulation Test Bench Rack", they only test the battery or power drive separately, their functions are single, and the integration level is not high, especially they cannot truly reflect the motor or power drive. The characteristics of the load on the new energy vehicle, not to mention the matching performance between the power battery pack and the motor

[0004] At present, there are still some open technical solutions, such as "A New Power Battery Simulation Device" by Ji University, patent number: CN201120217129.X; such as "A Single Battery Simulation Device" by Zhejiang Rongxin Power Technology Co., Ltd., patent number : 201220021014.8, these schemes only construct a simulated battery device for the test of the battery management system, but generally lack the control and detection of thermal management; and the test of the battery pack is detected by a simulated discharge device, which cannot truly reflect the battery pack. The characteristics under load; the test of the driving motor often uses the energy on the grid as the driving force of the motor, which cannot reflect the characteristics of the driving load under different working conditions of the real battery pack

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