Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 89 for “"battery pack"”.
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Design and analysis of a battery pack enclosure for Formula SAE
… analysis of the enclosure for the high voltage battery pack which powers the Model Year 2017 MIT Formula SAE racecar. The battery pack is custom designed and built with six modules of 144 Samsung INR18650-25R lithium-ion cells each. Each component of the enclosure is analyzed to ensure …
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Optimizing hybrid vehicles : battery pack design, energy management, and collaborative learning
… are all focused on hybrid vehicle optimization: battery pack design for low cost thermal management, energy management of blended battery packs for weight minimization, and collaborative learning for improved energy management. The outputs of this thesis include insights into the minimization of …
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Battery Pack Design and Transient Performance Modeling for High-Power Legged Robots
… also demand rigorous consideration of onboard battery constraints. This work presents an empirically derived lithium-ion battery model that captures transient voltage sag and time-dependent internal battery state, enabling more accurate prediction of feasible power delivery. Additionally, a …
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A bidirectional battery-to-battery energy cycler for battery pack testing and validation
… step in the manufacturing process. Cycling battery energy involves charging using the grid and discharging into resistive loads repeatedly while motoring the test results. This method of cycling the batteries not only wastes energy but also limits the rate at which they can be discharged due …
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Experimental and numerical quantification of EV and PHEV battery pack thermal isolation strategies
… feasible design alternatives that reduce active battery thermal management requirements and thereby parasitic power losses for an electrified vehicle by applying fundamental engineering design principles. Considering a production intent vehicle envelope as a packing constraint, various methods of …
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Design of a high performance liquid-cooled lithium-ion battery pack for automotive applications
… the design of a water cooled lithium ion battery module for use in high power automotive applications such as an FSAE Electric racecar. The motivation for liquid cooling in this application is presented with an adiabatic battery heating simulation followed by a discussion of axial cooling …
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Design and fabrication of retrofit e-bike powertrain and custom lithium-ion battery pack
… source, and throttle speed control. A custom battery pack was designed to meet system performance specifications and fabricated using individual lithium-ion cells. Overall design parameters included: form-factor of power source, system performance in terms of speed and weight, torque and power …
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Conceptual Design of a Battery Pack for Use in a Mobile Hybridized Power Generation System
… a standard generator with a large rechargeable battery pack. The addition of the battery pack allows for several unique power scenarios to occur through power generation. The battery pack functions to provide an efficient storage capability for the system. During times of excess load, the …
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Thermal network model development for an extended range electric vehicle battery pack with experimental verification through dynamic environmental exposure
… to develop a thermal model of the Chevrolet Volt battery pack, with focused on the influence of packaging components external to the cell modules, and on the pack’s response to ambient environmental influences. The thermal network was refined experimentally using heat flux and temperature …
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Development and analysis of techniques to improve air-cooling and temperature uniformity in battery packs
… temperature, and temperature uniformity of the battery pack and the cell within the operating limits. In this study, a novel concept has been developed to improve air-cooling and temperature uniformity in a simple battery pack by incorporating inlet plenum, jet inlets, and vortex generators. The …
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Dynamic modeling and control of transcritical vapor compression system for battery electric vehicle thermal management
… heavy machinery, and civilian transportation. Battery electric vehicles (BEVs) are one such development that use a battery pack to generate electrical energy used to propel the vehicle and power its auxiliaries. However, the battery pack also generates thermal energy as a byproduct which …
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Vehicle Traction Battery Modelling
… has been gradually increasing. In order for the Battery Management System (BMS) to perform effectively, accurately, and efficiently depends on the accuracy of the battery model of the battery pack. The work performed in this thesis is to model the battery pack, both the electrical model and the …
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Control-Oriented Thermal Model for a Hybrid Vehicle Battery
… to prevent overheating of Lithium-ion batteries. Battery pack studied in this work has a fan system for air-cooling the cells. The battery management system (BMS) in the battery pack functions to keep the temperature of the cells within allowable limits by either regulating the fan speed or …
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Investigation of new phase change material based thermal management systems for Li-ion batteries
In this thesis, a battery pack consisting of three A123 20Ah cells connected in series is tested with various cooling methods at different discharge rates. Four different coolant inlet temperatures are selected for the investigation. The results from the battery pack tests at no cooling show that …
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Pack Level Design Optimization for Electric Vehicle Thermal Management Systems Minimizing Standard Deviation of Temperature Distribution
… efficiently using the energy stored within the battery pack, some of these issues can be addressed. This study focuses on the thermal management systems for electric vehicles and the application of design optimization in the early design phase considering the pack in its entirety. A liquid …
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Internal resistance variances in lithium-ion batteries and implications in manufacturing
… of cycling, models the cycle life of a simple battery pack of two parallel-connected cells that start off as unbalanced, and validates it with experimental data from cycle life testing of parallel-connected LiFePO₄ cell groups. Experimental results from samples of commercially available cells …
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A Data-Driven Analysis to Determine the Electrical Needs of a Hybrid Powertrain System for Small, Hyper-Optimized, Track-Day Vehicles
… associated with adding an electric motor, battery pack, and additional components to control the system, the power gains from the system yielded a net greater power-to-weight ratio than the original vehicle without the hybrid sys- tem. An analysis of energy recuperation through regenerative …
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Development of Mechanical and Electrical Interfaces for Rapid Swap Battery Systems
… globally decarbonized energy economy, rapid swap battery packs provide a potential means to improve electric vehicle adoption in high utilization industrial vehicles where lengthy charge times are a barrier to electrification. High voltage, high current battery connectors are a critical component …
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Optimization of blended battery packs
This thesis reviews the traditional battery pack design process for hybrid and electric vehicles, and presents a dynamic programming (DP) based algorithm that eases the process of cell selection and pack design, especially for blended battery packs (those containing two or more different energy …
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Development and modeling of novel battery thermal management systems for electric and hybrid electric vehicles
… temperature of the lithium ion batteries in battery packs for electrical and hybrid electrical vehicles. This thesis studies, develops and models novel battery thermal management systems for the battery packs in hybrid electric vehicles and electric vehicles. The systems’ thermal performances …
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