Plug-in hybrid electric vehicle (PHEV) technology holds much promise for reducing the demand for petroleum in the transportation sector. A plug-in hybrid vehicle is an HEV with the ability to recharge its energy storage system with electricity from the electric utility grid. With a fully charged energy storage system, the vehicle will bias towards using electricity over liquid fuels. A key benefit of PHEV technology is that the vehicle is no longer dependent on a single fuel source. The primary energy carrier is electricity generated using a diverse mix of domestic resources including coal, natural gas, wind, hydroelectric, and solar energy. The secondary energy carrier is a liquid fuel (e.g., gasoline, diesel, or ethanol). The potential impact of PHEV is highly dependent on the system design and in particular, the energy storage system. This paper discusses the design options including power, energy, and operating strategy as they relate to the energy storage system. Expansion of the usable state-of-charge window will dramatically reduce cost but will likely be limited by battery life requirements. Increasing the power capability of the battery provides the ability to run all-electrically more often but increases the incremental cost. Increasing the energy capacity from 20-40 miles of electric range capability provides an extra 15% reduction in fuel consumption but also nearly doubles the incremental cost.
Plug-in hybrid electric vehicle energy storage system design
2006
9 Seiten, 16 Bilder, 9 Quellen
Conference paper
English
European Patent Office | 2022
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