Thermal Simulation of Li-Ion Battery Pack Using ANSYS Fluent
273
second observation is that which are at the bottom has a higher value of temperature
compared to the cells which are at the top.
6 Conclusion
Prolonged battery life can be only achieved by an efficient cooling system, which
needs the knowledge of temperature distribution and heat generation of the battery.
In this paper, we have presented the simulation results of the Li-ion battery pack,
which shows the contours of heat generation and temperature distribution. So, the
major cause of heat generation we found using Ansys simulation is the ohmic heat
generation, which was caused by the internal resistance of the battery, and it was
observed that the temperature of the battery pack was almost identical at all areas but
there was a slight increment at the contact zone of two Li-ion battery cell. The heat
was distributed almost uniformly throughout the battery pack. The second important
outcome was we can be able to get the value of temperature at different points of
the battery pack without doing extensive and time-consuming experiments. Another
important result is that the virtual connection method is more stable compared to the
busbar connection method. The benefit of the virtual connection method compared to
the busbar connection method is that calculation time is drastically reduced. Busbar
is a tiny component that connects two battery cells and meshing of it is a very challenging task. After knowing the thermal behavior of Li-ion battery, a customizable
cooling system can be designed easily. In future aspects of research, we would like to
change the dimension of the battery cell and battery pack arrangements and compare
the results with experiments.
Acknowledgements Without the guidance and motivation provided by our mentor Dr. Vivek K.
Patel, this work would not be possible. We would also like to acknowledge all the support provided
by our institute Pandit Deendayal Petroleum University.
References
1. https://www.energy.gov/eere/articles/how-does-lithium-ion-battery-work
2. https://hone.mentra.mohammedshrine.org/diagram-basic-lithium-ion-battery-charger-circuitlithium-ion-battery.html
3. Zhang X (2011) Thermal analysis of a cylindrical lithium-ion battery. Electrochim Acta
56(3):1246–1255. https://doi.org/10.1016/j.electacta.2010.10.054
4. Kizilel R, Sabbah R, Selman JR, Al-Hallaj S (2009) An alternative cooling system to enhance
the safety of Li-ion battery packs. J Power Sources 194(2):1105–1112. https://doi.org/10.1016/
j.jpowsour.2009.06.074
5. Pesaran A, Santhanagopalan S, Kim GH (2013) Addressing the impact of temperature extremes
on large format Li-ion batteries for vehicle applications. Presented at: Proceedings of the 30th
international battery seminar, Ft. Lauderdale, Florida
273
second observation is that which are at the bottom has a higher value of temperature
compared to the cells which are at the top.
6 Conclusion
Prolonged battery life can be only achieved by an efficient cooling system, which
needs the knowledge of temperature distribution and heat generation of the battery.
In this paper, we have presented the simulation results of the Li-ion battery pack,
which shows the contours of heat generation and temperature distribution. So, the
major cause of heat generation we found using Ansys simulation is the ohmic heat
generation, which was caused by the internal resistance of the battery, and it was
observed that the temperature of the battery pack was almost identical at all areas but
there was a slight increment at the contact zone of two Li-ion battery cell. The heat
was distributed almost uniformly throughout the battery pack. The second important
outcome was we can be able to get the value of temperature at different points of
the battery pack without doing extensive and time-consuming experiments. Another
important result is that the virtual connection method is more stable compared to the
busbar connection method. The benefit of the virtual connection method compared to
the busbar connection method is that calculation time is drastically reduced. Busbar
is a tiny component that connects two battery cells and meshing of it is a very challenging task. After knowing the thermal behavior of Li-ion battery, a customizable
cooling system can be designed easily. In future aspects of research, we would like to
change the dimension of the battery cell and battery pack arrangements and compare
the results with experiments.
Acknowledgements Without the guidance and motivation provided by our mentor Dr. Vivek K.
Patel, this work would not be possible. We would also like to acknowledge all the support provided
by our institute Pandit Deendayal Petroleum University.
References
1. https://www.energy.gov/eere/articles/how-does-lithium-ion-battery-work
2. https://hone.mentra.mohammedshrine.org/diagram-basic-lithium-ion-battery-charger-circuitlithium-ion-battery.html
3. Zhang X (2011) Thermal analysis of a cylindrical lithium-ion battery. Electrochim Acta
56(3):1246–1255. https://doi.org/10.1016/j.electacta.2010.10.054
4. Kizilel R, Sabbah R, Selman JR, Al-Hallaj S (2009) An alternative cooling system to enhance
the safety of Li-ion battery packs. J Power Sources 194(2):1105–1112. https://doi.org/10.1016/
j.jpowsour.2009.06.074
5. Pesaran A, Santhanagopalan S, Kim GH (2013) Addressing the impact of temperature extremes
on large format Li-ion batteries for vehicle applications. Presented at: Proceedings of the 30th
international battery seminar, Ft. Lauderdale, Florida