Keywords
IEM-M (KL0-mecanica), Acumulador, tubos de calor, refrigeración, diseño final, Accumulator, heat pipes, cooling system, final design
lllini Formula Electric Battery Cooling System
Abstract
Illini Formula Electric (IFE) es un equipo de competición patrocinado por la University of Illinois at Urbana-Champaign, que compite anualmente en la Formula SAE (FSAE), en la categoría eléctrica (EV). Esta competición brinda la oportunidad a diferentes estudiantes de grado y postgrado de diseñar un monoplaza eléctrico y competir contra otros equipos de todas partes del mundo.
Estos vehículos son impulsados por un motor eléctrico que funciona con un acumulador. Este acumulador consiste en un paquete de baterías de iones de litio. IFE actualmente fabrica su propio acumulador con celdas caseras. A partir del próximo año y en adelante, implementarán módulos de baterías Samsung Li8P25RT disponibles en el mercado. Estos módulos tienen una mayor densidad de energía y se espera que suministren más potencia al motor. Sin embargo, al pasar mayor corriente a través del acumulador, se generará una cantidad excesiva de calor . Este exceso de calor puede conducir a una disminución de la salida de corriente y a la degradación del paquete de iones de litio, por lo que se requiere un sistema de refrigeración para transferir eficazmente el calor a un medio externo. El objetivo de este proyecto es diseñar un sistema de refrigeración que facilite el rechazo de calor desde el acumulador, aumentando la capacidad de extracción de energía, y así contribuir a un mejor rendimiento del vehículo.
Illini Formula Electric (IFE) is an electric vehicle (EV) competition team sponsored at the University of Illinois at Urbana-Champaign which races annually at the Formula SAE (FSAE) competition. This competition brings the opportunity to different undergraduate and graduate students to design a single-seater electric vehicle and compete against other teams from other parts of the world. These vehicles are driven by an electric motor, which is powered by an accumulator. This accumulator consists of a group of Lithium-ion battery modules. IFE currently fabricates their own accumulator with homemade Li-ion cells. From next year and on, they will be implementing commercially available Samsung Li8P25RT battery modules. These modules have a higher energy density and are expected to supply more power to the motor. However, when large amounts current pass through the accumulator an excess amount of waste heat will be generated. This excess waste heat can lead to lowered current output and due to degradation of the lithium ion pack, so a cooling system is required to effectively transfer the waste heat to an external sink. Our goal is to design a cooling system to facilitate heat rejection from the accumulator, increasing power draw capability, and thus contribute to better vehicle performance.
Illini Formula Electric (IFE) is an electric vehicle (EV) competition team sponsored at the University of Illinois at Urbana-Champaign which races annually at the Formula SAE (FSAE) competition. This competition brings the opportunity to different undergraduate and graduate students to design a single-seater electric vehicle and compete against other teams from other parts of the world. These vehicles are driven by an electric motor, which is powered by an accumulator. This accumulator consists of a group of Lithium-ion battery modules. IFE currently fabricates their own accumulator with homemade Li-ion cells. From next year and on, they will be implementing commercially available Samsung Li8P25RT battery modules. These modules have a higher energy density and are expected to supply more power to the motor. However, when large amounts current pass through the accumulator an excess amount of waste heat will be generated. This excess waste heat can lead to lowered current output and due to degradation of the lithium ion pack, so a cooling system is required to effectively transfer the waste heat to an external sink. Our goal is to design a cooling system to facilitate heat rejection from the accumulator, increasing power draw capability, and thus contribute to better vehicle performance.
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