Comparison of Energy Loss in Electric Vehicles According to Battery Capacity Variation Using Simulation; 시뮬레이션을 활용한 전기자동차 배터리 용량 변화에 따른 에너지 손실 비교

초록

One crucial factor of electric vehicles is driving range. The most effective way to increase the driving range of electric vehicles is by expanding the battery capacity. Consequently, the battery capacities of recent electric vehicles vary. However, as the battery capacity decreases, the power that each battery cell should share increases, which also increases battery energy loss. Therefore, this study analyzed the impact of battery capacity variations on energy loss using simulation. The findings reveal that the proportion of energy loss from the battery significantly increases as the battery capacity decreases. For urban driving mode(UDDS) and highway driving mode(HWFET), an 80 kWh battery resulted in energy losses of 1.3 % and 0.88 %, respectively, whereas a 10 kWh battery incurred energy losses of 9.6 % and 7.1 %, respectively. © 2024 Korean Society of Automotive Engineers. All rights reserved.

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