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Author: search.filters.author.Keyoonwong, WiwatSubject: search.filters.subject.Li-ion Battery

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    Estimating Surface Temperature Profile Of Li-Ion Battery Under Several Conditions
    (2024-01-01)
    Keyoonwong, Wiwat
    ;
    Mesakhun, Korndanai
    ;
    Intanil, Kananat
    ;
    Siriwilawan, Nicharee
    ;
    Chipchukiad, Tisorn
    In recent years, electric vehicles have become increasingly popular as a highly efficient and environmentally friendly transportation option worldwide. This trend is primarily due to the growing global awareness of the importance of pollution and carbon emissions from road transportation. According to the International Energy Agency (IEA) latest report, the sales of electric vehicles have exceeded 10 million in 2022. Electric vehicles consist of various components that are used for propulsion. One of the crucial components that stores energy for propulsion is the battery. The efficiency and lifetime of batteries depend on the temperature during usage. To ensure long lifetime and efficiency of batteries, temperature management is crucial. Batteries perform best when the temperature is neither too low or high. Therefore, the thermal issue of battery in electric vehicles is essential and has been continuously researched and developed. Heat in batteries and thermal modeling of batteries are important for estimating battery temperature profiles.
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    Study impedance and temperature behavior of LFP battery as function of relative humidity and temperature under various conditions
    (2024-01-01)
    Keyoonwong, Wiwat
    ;
    Phiphuannok, Kankawi
    ;
    Janesawatpong, Kittipot
    ;
    Seeboonrueang, Kotchapon
    ;
    Amnuaysap, Nuttapum
    Nowadays, lithium-ion batteries are widely employed in a lot of applications. For example, using batteries to provide energy for Electric Vehicles. In use, Batteries are charged and discharged in many cycles, which impacts battery aging. Battery aging causes capacity reduction and internal resistance increase. As is well known, the battery resistance changes with temperature and state of charge (SOC). However, no one has yet studied whether relative humidity affects the battery resistance or not. In this paper, behavior of LFP batteries as function of relative humidity and temperature under various conditions is analyzed. During the aging process, a battery impedance meter was performed at various conditions to analyze the change of the battery impedance due to relative humidity and temperatures. Additionally, the time required to charge the battery under different conditions was analyzed.