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Title Experimental and modeling investigation of thermal behaviour and performance of lithium ion prismatic cells at cold-start temperatures
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Publication Date
University/Publisher University of Waterloo
Abstract This thesis examines the thermal behaviour of prismatic lithium iron-phosphate (LFP) cells and batteries and the influence of that behaviour on discharge performance under cold-start operating conditions representative of near- and sub-zero temperature driving. The first part of this thesis details the experimental characterization of global and local thermal behavior, and global voltage performance, of prismatic cells at cold-start ambient temperatures. The second part of this thesis applies the characterization data to validate a 0D lumped capacitance model and a 3D thermal-electrochemical coupled model of the cell. The models are then used to investigate the influence and significance of spatial thermal variations on prismatic cell performance.
Subjects/Keywords Lithium ion; Li-ion; Battery; Lithium ion heat generation; Thermally-coupled electrochemical model; Prismatic battery; Lithium ion cell model; Electric vehicle; Lithium ion thermal model; Battery temperature effects
Language en
Country of Publication ca
Record ID handle:10012/12813
Repository waterloo
Date Retrieved
Date Indexed 2019-06-26

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…and ambient temperature setpoints. For illustrative purposes, a discharge rate of 2C is shown. .......................................... 29 Figure 4.1: Schematic of model Li-ion cell showing current collectors, electrodes with spherical active…

…of this thesis to investigate the effects of thermal non-uniformity on cell performance and to assess the applicability of a lumped capacitance, or 0D, thermal model and a fully 3D thermally-coupled electrochemical model to prismatic Li-ion batteries…

…chemical interactions that occur in Li-ion cells at low temperatures, followed by the efforts made to model those interactions. 2.1 Temperature Effects in Lithium Ion Batteries Significant losses in cell power and capacity during low-temperature operation…

…4 Figure 2.1: Infrared image of temperature distribution for a prismatic Li-ion cell after 5C discharge at room temperature [16]. ............................................................................................. 18 Figure 3.1…

…Thermocouple arrangement on Li-ion cell surface. All measurements are in cm. .... 24 Figure 3.2: Isometric section view of insulated cell assembly. .................................................... 26 Figure 3.3: Experimental setup consisting of…

…Addressing these losses is currently one of the highest priorities in Li-ion cell development [7, 8]. However, in order to optimize batteries and their thermal management systems for the full range of vehicle operating temperatures, a detailed…

…optimal battery system to perform under realistic driving conditions, it is necessary to understand the effects of both spatial and temporal changes in cell temperature on its voltage behaviour. 1.1.2 Types of Lithium Ion Batteries A lithium ion battery

…is a secondary, or rechargeable, battery which, as described above, uses the oxidation and reduction of lithium as its mechanism to release and store energy. Several types of Li-ion batteries have been developed for a range of applications, and differ…

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