Electric Vehicle Range Extender System Test Bench and Range Extender System Reliability Test Method

Abstract

The invention provides an electric vehicle range extender system test bench comprising an automatic controller, an engine, a generator, a vehicle controller, a generator controller electrically connected with the generator, and a power battery. The generator is connected with the engine through a connecting shaft or a coupling. The automatic controller is electrically connected with a battery management system, the vehicle controller, the generator controller and an engine controller. Through the electric vehicle range extender system test bench and a test method of the invention, reliability test on an electric vehicle range extender system is realized, and a data support is provided for the development of a range extender system with high performance. The electric vehicle range extender system test bench and the test method are of important guiding significance to developing a range extender system with high performance and applying the range extender system to electric vehicles as well as promoting quick industrialization of the range extender system. The invention further provides a range extender system reliability test method.

Description

technical field [0001] The invention belongs to the technical field of range extender systems for electric vehicles. Specifically, the invention relates to a test bench for range extender systems of electric vehicles and a reliability test method for the range extender systems. Background technique [0002] The range-extended pure electric vehicle is generally considered to be a new energy vehicle with the most industrialization prospects, and countries all over the world have begun to attach importance to the research and development and industrialization of the extended-range pure electric vehicle technology. At present, there is no relatively mature range-extended pure electric vehicle product on the market in China, and the research and development of related products has just started. During the research and development process, it was found that the connecting shaft between the engine and the generator in the range extender system often breaks , and its reliability can...

AI Technical Summary

Problems solved by technology

But for mass production, the disadvantages of this technology are:

[0008] 1. The technology has a limited scope of application and is only suitable for gas engine range extender systems, not for commonly used fuel engine (gasoline engines and diesel engines) range extender systems;

[0009] 2. The acceleration time of the gas engine is slow and the power performance is poor, which cannot meet the customer's demand for good power performance of the vehicle;

[0010] 3. This technology does not consider the reliability of the connection between the engine and the generator. Reliability is a key factor restricting the industrialization of range-extended electric vehicles, which must be considered

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