A large scale lithium-ion battery system of SAPT EIFP326V50Ah for Electric vehicles (EV) has been developed. This system is composed of 9 modules and each module is made up of 24 cells. As the maximum constant discharge power of the battery is up to 48kW, the pack temperature would rise dramatically during fast charging and discharging process. So an effective water cooling system was developed for the pack. Before the cooling system was used, the maximum temperature of battery pack, whose initial temperature was 25 °C, would rise up to about 50 °C after 3C (150A) fast charging. The temperature non-uniformity was about 12 °C. When the water cooling system was used, the temperature will be reduced to 40 °C, with only 6 Celsius degrees' temperature non-uniformity inside the pack. To better study the heat dissipation of the EIFP system, a three-dimensional thermal model was developed to simulate the pack's temperature distribution. This numerical model was performed at different charging and discharging current rates, operating temperatures and different water cycling velocity.
A water cooling system of lithium-ion batteries for EV/PHEV
2010
5 Seiten, 6 Bilder, 11 Quellen
(nicht paginiert)
Aufsatz (Konferenz)
Datenträger
Englisch
Lithium phosphate batteries used successfully in PHEV applications
Tema Archiv | 2007
|Integrated Cooling System for Underfloor High Voltage Devices in PHEV
SAE Technical Papers | 2018
|