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Energies 2014, 7(8), 5374-5399; doi:10.3390/en7085374

Battery Sizing for Plug-in Hybrid Electric Vehicles in Beijing: A TCO Model Based Analysis

State Key Laboratory of Automotive Safety and Energy, Tsinghua University, Beijing 100084, China
Chongqing Changan Automobile Company Ltd., Chongqing 400023, China
Author to whom correspondence should be addressed.
Received: 15 June 2014 / Revised: 29 July 2014 / Accepted: 11 August 2014 / Published: 20 August 2014
(This article belongs to the Special Issue Advances in Hybrid Vehicles)
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This paper proposes a total cost of ownership (TCO) model for battery sizing of plug-in hybrid electric vehicles (PHEVs). The proposed systematic TCO model innovatively integrates the Beijing driving database and optimal PHEV energy management strategies developed earlier. The TCO, including battery, fuel, electricity, and salvage costs, is calculated in yearly cash flows. The salvage cost, based on battery degradation model, is proposed for the first time. The results show that the optimal battery size for PHEVs in Beijing is 6–8 kWh. Several additional scenarios are also analyzed: (1) 10% increase in battery price or discount rate leads to an optimal battery size of 6 kWh, and 10% increase in fuel price shifts the optimal battery size to 8 kWh; (2) the longer and more dispersive daily range distribution in the U.S. increases the optimal battery size to 14 kWh; (3) the subsidy in China results in an optimal battery size of 13 kWh, while that in the U.S. results in 17 kWh, and a fuel savings rate based subsidy policy is innovatively proposed; (4) the optimal battery size with Li4Ti5O12 batteries is 2 kWh, but the TCO of Li4Ti5O12 batteries is higher than that of LiFePO4 batteries. View Full-Text
Keywords: battery sizing; total cost of ownership; plug-in hybrid electric vehicle battery sizing; total cost of ownership; plug-in hybrid electric vehicle

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This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Hou, C.; Wang, H.; Ouyang, M. Battery Sizing for Plug-in Hybrid Electric Vehicles in Beijing: A TCO Model Based Analysis. Energies 2014, 7, 5374-5399.

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