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A strategy for portable high-power applications with a controlled thermal environment has been developed and has demonstrated the advantage of using the novel phase change material (PCM) thermal management systems over conventional active cooling systems. A passive thermal management system using PCM for Li-ion batteries is tested for extreme conditions, such as ambient temperature of 45°C and discharge...
The effectiveness of passive cooling by phase change materials (PCM) is compared with that of active (forced air) cooling. Numerical simulations were performed at different discharge rates, operating temperatures and ambient temperatures of a compact Li-ion battery pack suitable for plug-in hybrid electric vehicle (PHEV) propulsion. The results were also compared with experimental results. The PCM...
The necessity to significantly enhance efficiency of transportation vehicles in response to global warming issues and to ever-increasing oil prices is recognized around the world. Hybrid electric vehicles (HEV's) were the first proposed solution to reduce energy consumption, however much additional improvement is necessary. Benefits of HEV's include a smaller internal combustion engine (ICE), the...
In this paper, an outline of a project has been covered in which a ZiP'r4 electric scooter was first analyzed and later converted to a hybrid PEM fuel cell - Li-ion battery powered vehicle. An automatic hybrid controller for the vehicle power management is also proposed. This design can be implemented in the longer run on general vehicles; thus creating independence from fossil fuels.
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