Abstract
There exist many kinds of turning situations for driving, and the turns would lead to additional forces on the liquid in the channel, which can affect the liquid-cooled battery pack thermal management of electric vehicles. However, few studies have investigated the cooling effect in battery packs during turns in electric vehicles. In view of this, the purpose of this paper is to study how the cooling effect of the battery pack varies under turning conditions and explain the mechanisms behind it. Based on an indirect liquid-cooled battery pack model and by applying turning conditions to the battery pack under different C-rate discharges, the cooling effect of the battery pack is investigated. It is found that the maximum temperature of the battery pack increases significantly under the turning motion condition and increases with vehicle speed. In addition, the temperature uniformity of the battery pack is also greatly deteriorated by the turning motion. Turning results in an increase of the inertial force, which acts on the cooling fluid and decreases the fluid mass flow, ultimately reducing the cooling effect of the battery pack.
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