The purpose of this paper is to assess the capabilities of commercial lithium-ion batteries for use in battery electric vehicles (BEV's). The evaluation criteria are based on a newly developed experimental methodology which describes the performance characteristics of different batteries of various chemistries. This methodology primarily permits the user to obtain the most important battery characteristics for charging and discharging, internal resistance, efficiency, Peukert constant, thermal stability during charge and discharge phases. The presented test data of the lithium-ion batteries are based on the nickel cobalt manganese (NiCoMnO2), iron phosphate and nickel cobalt aluminum oxide in the positive electrode. The energy density of the batteries using nickel manganese cobalt oxide have the highest energy density in the range of 120 -150 Wh/kg compared to iron phosphate being in the range of 70-115 Wh/kg. Further, from the point of view of the charge&discharge capability and energy efficiency, the first mentioned chemistry of batteries show the best performances. However, the situation regarding the thermal stability indicates that nickel manganese cobalt oxide based batteries have less favorable performances. Regarding the situation to the cost of the batteries, indicates that nickel manganese cobalt oxide based batteries are too expensive (400-800 $/kWh) compared to iron phosphate batteries (300 $/kWh). However, the cycle life of NiCoMnO2 batteries is higher than the iron phosphate batteries. Finally, special related attributes to the battery pack in battery electric vehicle have been analysed such as internal resistance and the variation between the battery cells, which are necessary for the development of a battery management system.
|Title of host publication||2010 IEEE Vehicle Power and Propulsion Conference, VPPC 2010|
|Number of pages||6|
|Publication status||Published - 1 Dec 2010|
|Event||2010 IEEE Vehicle Power and Propulsion Conference, VPPC 2010 - Lille, France|
Duration: 1 Sep 2010 → 3 Sep 2010
|Conference||2010 IEEE Vehicle Power and Propulsion Conference, VPPC 2010|
|Period||1/09/10 → 3/09/10|