Search for dissertations about: "battery testing"

Showing result 6 - 10 of 41 swedish dissertations containing the words battery testing.

  1. 6. Development of a Novel Method for Lithium-Ion Battery Testing on Heavy-Duty Vehicles

    Author : Pontus Svens; Mårten Behm; Göran Lindbergh; Per Alvfors; Anders Malmqvist; KTH; []
    Keywords : Lithium-ion battery; HEV; field testing; heavy-duty vehicles;

    Abstract : Increasing demands for lower environmental impact from vehicles, including heavy-duty vehicles, have driven several vehicle manufacturers to consider adding hybrid electrical vehicles (HEV’s) to the product portfolio. Present research on batteries for HEV’s is mainly focused on lithium-ion battery chemistries, since lithium-ion batteries has the most promising technical potential compared to other types of batteries. READ MORE

  2. 7. Lithium ion Battery Aging: Battery Lifetime Testing and Physics-based Modeling for Electric Vehicle Applications

    Author : Evelina Wikner; Chalmers University of Technology; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Calendar aging; Physics-based modeling; Battery lifetime tests; Plug-in Hybrid Electric Vehicle PHEV ; Electric Vehicle EV ; Hybrid Electric Vehicle HEV ;

    Abstract : Electrification of vehicles is one solution in reducing emissions from the transport sector, and in particular to limit tail-pipe emissions in cities. In order to make the electrification successful and cost effective, there is a high demand for longer drive range and longer battery lifetime. READ MORE

  3. 8. Lithium-ion Battery Safety - Assessment by Abuse Testing, Fluoride Gas Emissions and Fire Propagation

    Author : Carl Fredrik Larsson; Chalmers University of Technology; []
    Keywords : TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; ENGINEERING AND TECHNOLOGY; fire; thermal runaway; gas emission; gas explosion; propagation; safety; abuse testing; Lithium-ion; cell case explosion; hydrogen fluoride;

    Abstract : Lithium-ion batteries offer high energy and power densities as well as long life time but have a more narrow stability window compared to other battery types and contain reactive and flammable materials. In case of overheating the battery cell can release gas (vent) and, at temperatures of about 150-200 °C, a so called thermal runaway can occur, that is a rapid self-heated temperature increase which is typically accompanied with a large release of smoke and gas, fire and a potential cell case explosion or gas explosion. READ MORE

  4. 9. Battery Health Estimation in Electric Vehicles

    Author : Verena Klass; Göran Lindbergh; Mårten Behm; Anna Stefanopoulou; KTH; []
    Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Lithium-ion battery; state-of-health; electric vehicle; support vector machine; resistance; capacity; Chemical Engineering; Kemiteknik;

    Abstract : For the broad commercial success of electric vehicles (EVs), it is essential to deeply understand how batteries behave in this challenging application. This thesis has therefore been focused on studying automotive lithium-ion batteries in respect of their performance under EV operation. READ MORE

  5. 10. Dementia diagnostics in primary care : with a focus on cognitive testing

    Author : Anna Segernäs Kvitting; Jan Marcusson; Mats Foldevi; Anders Wimo; Hans Basun; Linköpings universitet; []

    Abstract : BackgroundAge is the greatest risk factor for developing dementia and the total number of people aged 60 years and above is expected to more than double globally from 2013 to 2050 (1). Primary health care (PHC) is important for basic diagnostic evaluations. READ MORE