리튬 폴리머 배터리의 환경온도/방전량/유체 적용에 따른 발열 및 성능 변화에 대한 연구

다국어 초록 (Multilingual Abstract)

The battery industry applied to electric vehicles is being studied a lot as an alternative resource for environmental problems and depletion of energy resources. Large-capacity batteries used in electric vehicles are configured in series and parallel, and important factors such as safety, durability, uniformity, weight and cost are major research areas in the battery industry. Among the various variables of the battery, it is an essential requirement to effectively manage the heat generation of the battery excluding external shocks. In this paper, the heat generation and performance characteristics of batteries for electric vehicles were studied in response to changes in ambient temperature and discharge rate. The heat generation and performance of a high-discharge lithium polymer battery [40Ah] were analyzed through temperature change according to 1 to 3 C discharge at ambient temperature (-30 to 40 ℃), and the performance and characteristics were analyzed by applying a fluid-channel. In the experiment, high discharge rate and extreme environmental temperature have a high effect on battery performance and heat generation, and changes in battery performance according to fluid temperature were also analyzed. This study demonstrated that it is important to maintain the ambient temperature and the temperature applied to the fluid channels between 30 and 40 °C for optimal battery operation.