Electro-thermal modelling of polymer lithium batteries for starting period and pulse power

Since power capabilities of solid polymer lithium batteries can only be delivered above 60 °C, the thermal management in electric-vehicle applications has to be carefully considered. Electro-thermal modelling of a thermally insulated 200 kg battery was performed, and electrochemical data were obtain...

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Bibliographic Details
Published in:Journal of power sources 1995, Vol.54 (2), p.393-396
Main Authors: Baudry, P., Neri, M., Gueguen, M., Lonchampt, G.
Format: Article
Language:English
Subjects:
Applied sciences
Direct energy conversion and energy accumulation
Electrical engineering. Electrical power engineering
Electrical power engineering
Electrochemical conversion: primary and secondary batteries, fuel cells
Electrochemistry
Exact sciences and technology
Lithium batteries
Mathematical models
Polymer electrolyte cells
Polymers
Q1
Thermal modelling
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Summary:Since power capabilities of solid polymer lithium batteries can only be delivered above 60 °C, the thermal management in electric-vehicle applications has to be carefully considered. Electro-thermal modelling of a thermally insulated 200 kg battery was performed, and electrochemical data were obtained from laboratory cell impedance measurements at 20 and 80 °C. Starting at 20 °C as initial working temperature, the battery reaches 40 °C after 150 s of discharge in a 0.5 Ω resistance. At 40 °C, the useful peak power is 20 kW. The energy expense for heating the battery from 20 to 40 °C is 1.4 kWh, corresponding to 6% of the energy available in the battery. After a stand-by period of 24 h, the temperature decreases from 80 to 50 °C, allowing efficient starting conditions.
ISSN:0378-7753
1873-2755
DOI:10.1016/0378-7753(94)02109-G