Sökning: "fredrik larsson chalmers"

Hittade 5 avhandlingar innehållade orden fredrik larsson chalmers.

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

    Detta är en avhandling från Gothenburg : Chalmers tekniska högskola

    Författare :Carl Fredrik Larsson; [2017]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; fire; thermal runaway; gas emission; gas explosion; propagation; safety; abuse testing; Lithium-ion; cell case explosion; hydrogen fluoride;

    Sammanfattning : 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. LÄS MER

  2. 2. Assessment of safety characteristics for Li-ion battery cells by abuse testing

    Detta är en avhandling från Chalmers tekniska högskola, Institutionen för teknisk fysik

    Författare :Fredrik Larsson; [2014]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : .... LÄS MER

  3. 3. Goal-Oriented Adaptive Finite Element Analysis in Computational Material Mechanics

    Detta är en avhandling från Chalmers tekniska högskola, Institutionen för teknisk fysik

    Författare :Fredrik Larsson; [2003]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; visco-plasticity; a posteriori error estimation; thermo-elasticity; mesh refinement; adaptivity; FEM; elasticity;

    Sammanfattning : This thesis is concerned with error control in computational material mechanics. A posteriori error estimation and adaptivity for finite element discretizations is investigated. Based on the technique of solving a dual problem, it is possible to control the accuracy of arbitrary quantities. LÄS MER

  4. 4. Goal-oriented error measures and adaptive finite element procedures in solid mechanics

    Detta är en avhandling från Chalmers tekniska högskola, Institutionen för teknisk fysik

    Författare :Fredrik Larsson; [2001]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Hyper-elasticity; A posteriori error estimation; Thermo-elasticity; Adaptivity; FEM; Visco-plasticity;

    Sammanfattning : .... LÄS MER

  5. 5. Assessment of safety characteristics for Li-ion battery cells by abuse testing

    Detta är en avhandling från Chalmers tekniska högskola, Institutionen för teknisk fysik

    Författare :Carl Fredrik Larsson; [2014]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; overcharge; Lithium-ion; toxic gases; abuse test; thermal runaway; short circuit; safety; battery; fire;

    Sammanfattning : Despite the many advantages with lithium-ion batteries there can be disadvantages in form of safetyissues. In an abuse situation a Li-ion cell can undergo a thermal runaway releasing excessive heat,flammable and toxic gas emissions and eventually accompanied by dissembling/explosion and fire. LÄS MER