Technology Research Section
More widespread use of electric vehicles (EVs) is formulated as a national policy and expected by the public, leading to numerous environmental advantages such as the reduction in CO2 emissions in the transportation sector, as well as no exhaust gas emissions and less vibration and noise. Conventional electric vehicles are prone to many technical problems such as a decrease in cell performance and the loss of heating energy, especially in cold and snowy regions. In this regard, it was believed that a lot of time would be required for the introduction and widespread use of electric vehicles. However, thanks to the recent technological development of high-performance lithium-ion batteries and motors, EVs have been developed to a more practical level.
Under the circumstances, the Research & Development Department has obtained data and technological findings in verification test runs of iMiEV (EVs made by Mitsubishi Motors Corporation), and is now examining the feasibility of widespread use of EVs in cold and snowy regions.
［Conditions of verification test runs for iMiEV］
*See Fig.1 and 2 about the comparison of gasoline to electric vehicles
Fig.1 Gasoline vehicle
Fig.2 Electric vehicle
［Results of the verification test runs］
Fig.3 Mileage image per full charge
High-speed chargers which have been installed in the Tokyo metropolitan area on a trial basis are planned to be put on the market and they are expected to be introduced in Hokkaido as well. Therefore, we will extract practical problems on electric charge in cold regions, discuss about their adaptability, and examine the feasibility of EVs, including the surrounding infrustructure.