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Design of the Storage System of a High Performance Hybrid Vehicle
Technical Paper
2015-24-2544
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Within the “Industria 2015” Italian framework program, the HI-ZEV project has the aim to develop two high performance vehicles: one full electric and one hybrid. This paper deals with the electric energy storage (EES) design and testing of the hybrid vehicle.
A model of the storage system has been developed, simulating each cell like an electric generator with more RC circuits in series. To take account of the heat transfer, a forced convection model has been used with the air speed proportional to the vehicle speed.
The model had two calibration steps: the first has determined the electrical parameters of the model (open voltage circuit, internal resistances and capacitors); the second to calibrate the heat transfer model. The first calibration has been made on a climatic chamber at 23 °C discharging one single module with different constant currents from 5C (5 times the nominal capacity) to 25C and charging with currents in the range from 1C to 5C. (where C means the current rate the flow in the battery in 1 hour)
The results show that for all the tested cycles the battery pack designed is able to run safely, not exceeding the limit temperature (50 °C). The model developed and validated can be a useful tool in the design phase of a battery pack system.
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Ortenzi, F., Pede, G., and Antonini, P., "Design of the Storage System of a High Performance Hybrid Vehicle," SAE Technical Paper 2015-24-2544, 2015, https://doi.org/10.4271/2015-24-2544.Data Sets - Support Documents
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