Thermal modeling of a large prismatic LiFePO4/graphite battery. Coupled thermal and heat generation models for characterization and simulation

Autor: Guy Friedrich, Marie-Pierre Bichat, Christophe Forgez, Nicolas Damay
Přispěvatelé: Université de Technologie de Compiègne (UTC), Roberval (Roberval)
Jazyk: angličtina
Rok vydání: 2015
Předmět:
Battery (electricity)
Lithium-ion
Materials science
Electrical Losses Modeling
Equivalent Electric Circuit
020209 energy
Energy Engineering and Power Technology
02 engineering and technology
7. Clean energy
Heat capacity
Batteries
LiFePO4
Thermal
0202 electrical engineering
electronic engineering
information engineering
Electronic engineering
Water cooling
Electrical and Electronic Engineering
Physical and Theoretical Chemistry
ComputingMilieux_MISCELLANEOUS
Electronic circuit
Renewable Energy
Sustainability and the Environment
[SPI.NRJ]Engineering Sciences [physics]/Electric power
Mechanics
021001 nanoscience & nanotechnology
Thermal conduction
[INFO.INFO-MO]Computer Science [cs]/Modeling and Simulation
Thermal Modeling
Heat generation
Heat transfer
[SPI.MECA.THER]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Thermics [physics.class-ph]
0210 nano-technology
Zdroj: Journal of Power Sources
Journal of Power Sources, Elsevier, 2015, 283, pp.37-45. ⟨10.1016/j.jpowsour.2015.02.091⟩
Journal of Power Sources, Elsevier, 2015, 283, pp.37-45
ISSN: 0378-7753
1873-2755
Popis: International audience; This paper deals with the thermal modeling of a large prismatic Li-ion battery (LiFePO 4 /graphite). A lumped model representing the main thermal phenomena in the cell, in and outside the casing, is hereby proposed. Most of the parameters are determined analytically using physical and geometrical properties. The heat capacity, the internal and the interfacial thermal resistances between the battery and its cooling system are experimentally identified. On the other hand, the heat sources modeling is considered to be one of the most difficult task. In order to overcome this problem, a heat generation model is included. More specifically, the electrical losses are computed thanks to an electrical model which is represented by an equivalent electric circuit. A method is also proposed for parameter determination which is based on a quasi-steady state assumption. It also takes into account the battery heating during characterization which is the temperature variation due to heat generation during current pulses. This temperature variation is estimated thanks to the coupled thermal and heat generation models. The electrical parameters are determined as function of state of charge (SoC), temperature and current. Finally, the proposed coupled models are experimentally validated with a precision of 1°C.
Databáze: OpenAIRE
Externí odkaz: