Design method for HIL test system, and HIL test system

Abstract

The invention discloses a design method for an HIL test system. The design method comprises the steps of building a complete vehicle dynamics model and a plurality of controlled object models at leastincluding an engine model, a power coupling mechanism model, a motor model and a battery model; carrying the complete vehicle dynamics model and the controlled object models on an HIL semi-physical simulation platform; performing interface configuration on the HIL semi-physical simulation platform, so that the finally formed HIL test system can be matched with cooperative work of an engine controller, a coupling mechanism controller, a motor controller and a battery management system in a power system of a hybrid power new energy automobile; and switching a pure-electric, pure-maneuver or engine and motor hybrid drive working mode of a virtual vehicle, so that the HIL test of the power system of the hybrid power new energy automobile is completed. In addition, the invention discloses theHIL test system, which has the abovementioned effects.

Description

technical field [0001] The invention relates to the field of new energy vehicles, in particular to a design method of an HIL test system and the HIL test system. Background technique [0002] With the increasing pressure of oil resource constraints and the increasing urgency of environmental protection, the development of new energy vehicles has become a social consensus, and hybrid new energy vehicles have also emerged as the times require. Moreover, since the power system plays a decisive role in the performance of hybrid new energy vehicles, it is of great significance to realize the HIL (hardware-in-the-loop) test of the power system of hybrid new energy vehicles. [0003] HIL test is an important verification method of system integration test in the development of new energy vehicle control strategy V process, which is realized based on HIL test system. In the prior art, HIL test systems can be roughly divided into two types. The first type of HIL test system is suita...

AI Technical Summary

Problems solved by technology

The first type of HIL test system is suitable for HIL testing of single controllers (such as vehicle controllers, battery management systems and motor controllers, etc.). The controlled object model can only simulate the working characteristics of the controlled object corresponding to a single controller, but cannot simulate the working characteristics of the controlled object corresponding to other controllers, and thus cannot realize the joint HIL test of multiple controllers, that is, Unable to apply to the HIL test of the hybrid new energy vehicle power system that requires multiple controllers to work together

The second type of HIL test system is suitable for the joint HIL test of the three electric vehicles (battery, motor, and electronic control) of pure electric vehicles. Although the joint HIL test of multiple controllers can be realized, since pure electric vehicles do not include engines, The second type of HIL test system also does not build a controlled object model for simulating the engine and related components, so it cannot realize the HIL test of the engine controller, and it is also not suitable for pure electric, pure motor, and engine and motor hybrid drives. Hybrid new energy vehicle power system HIL test with multiple working modes

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