HILS-based analysis of characteristics and performance of internal combustion engine vehicles with varying battery types

Along with the recent developments of environmentally friendly vehicles, there is an active technological development effort into the fuel efficiency enhancement of the existing internal combustion engine vehicles. As part of such technological development effort, researches are being conducted on the use of lithium batteries as the starter battery for internal combustion engine vehicles in place of lead-acid batteries, which have already been released as a test product for high-end vehicles. While the use of lithium starter battery as a replacement is expected to lead to various advantages and disadvantages at the same time, there is a lack of specific research on this area. Therefore, in this paper, we present a quantitative analysis of characteristics and performance in internal combustion engine vehicles with different battery types. For this purpose, we simulate a power-net system of a vehicle including charging control through a test bench based on actual vehicle data, and develop automotive power-net HILS by combining the test bench with a powertrain model. Based on HILS, we conduct tests of vehicles with AGM battery and lithium battery under various test scenarios, in order to comparatively analyze the characteristics and performance of the vehicle.