The Voltec System: Energy Storage and Electric Propulsion

DOI: 10.1016/B978-0-444-59513-3.00008-X In book: LITHIUM-ION BATTERIES: ADVANCES AND APPLICATIONS, Edition: 1, Chapter: The Voltec System: Energy Storage and Electric Propulsion, Publisher: Elsevier, Editors: Gianfranco Pistoia, pp.151-176

ABSTRACT Vehicle electrification is progressing significantly and is changing the architecture of future cars. This trend is a result of the need for higher vehicle efficiency and the desire to diversify the energy sources used for transportation. Voltec vehicles such as Chevrolet Volt and Opel Ampera are electric vehicles (EVs) with extended driving range. They operate as an EV as long as there is useful energy in the battery. However, unlike a pure battery EV, they do not suffer from lost vehicle utility when the battery is depleted. Volt and Ampera can continue operation by using an internal combustion engine as energy converter. Within the framework of this chapter, in addition to the focus on the current Voltec battery and propulsion system technologies, a brief history of the General Motors EV activities is also provided.
Keywords: Battery, Chevrolet Volt, Opel Ampera, Propulsion system, Voltec.

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Available from: Ulrich Eberle, May 02, 2014

Questions & Answers about this publication

  • Ulrich Eberle added an answer in Electric Vehicles:
    Can anyone help me to find the distribution percentile of NiMH, Li-ion, LiPO, etc... in electric vehicle?

    I'd like to have an idea on the distribution of these technologies in modern EV.

    Any help would be appreciated, thanks!

    Ulrich Eberle · General Motors Company

    Julien, I can only second Markus Lienkamp's point considering modern EVs (covering not only pure battery EVs, but also valid for extended-range EVs). Various aspects of vehicle electrification are discussed in the conference paper attached below. The piece is also providing some insight into battery technology progress over recent decades and a conservative forecast. Also please find attached a paper on the technology status of electric energy storage considering the first generation of the propulsion system of the Chevy Volt.

  • Ulrich Eberle added an answer in Hybrid Vehicles:
    On the design of a hybrid vehicle with electric traction - any thoughts?
    We still live in the era of oil and gasoline powered or diesel powered (or more recently, ethanol powered) cars. We already have idea how should be the next generation of automobiles. But how will be the car for the intermediate phase?
    I think it should be a car with electric traction, with batteries, with a small or micro internal combustion engine only to recharge the batteries.
    I think it could be a car like today's electric cars, equipped with a gasoline engine with maybe 5 hp and a fuel tank with a capacity of perhaps 20 liters. Thus it would be possible to overcome the current limitation of autonomy of electric automobiles.
    This suggestion is not accidentally simple. It is simple because the automotive industry is very slow to introduce effective changes.
    Ulrich Eberle · General Motors Company
    Dear colleagues, perhaps the book chapter attached below might be of interest to you. It describes in detail the concept of the extended-range EV, using the Chevrolet Volt and its European cousin, the Opel Ampera, as a specific example. Both the powertrain as well as the battery system and the operating concept are discussed. It would be great if you would consider the piece interesting and helpful. Best Regards Ulrich