Engineering topics
Hewson, John
Publications and source records attributed to Hewson, John.
A Comprehensive Numerical and Experimental Study for the Passive Thermal Management in Battery Modules and Packs
Cooling plates in battery packs of electric vehicles play critical roles in passive thermal management systems to reduce risks of catastrophic thermal runaway. In this work, a series of numerical simulations and experiments are carried out to unveil the role of cooling plates (both between cells and a bottom plate parallel to the cell stack) on the thermal behavior of battery modules and packs under nail penetrations. First, we investigated the role of side cooling plates on the thermal runaway propagation mitigation in battery modules (1S3P) and packs (3S3P) by varying the key parameters of the side cooling plates, such as plate thicknesses, thermal contact resistances, and materials. Then, three important factors for passive thermal management systems are identified: (i) thermal mass of side cooling plates, (ii) interfacial thermal contact resistances, and (iii) the effective heat transfer coefficients at exterior surfaces. The roles of bottom cooling plates on thermal runaway propagation mitigation in 1S3P and 1S5P battery modules are numerically investigated by comparing the thermal behavior of the modules with only side cooling plates and with both side and bottom cooling plates.
Battery safety research at Sandia: Moving toward designs that mitigate cascading failure.
Abstract not provided.
Thermal runaway propagation models: from module scale to system scale.
Abstract not provided.
Energy Redistribution as a Method for Mitigating Risk of Propagating Thermal Runaway.
Abstract not provided.
Thermal runaway vented gas characteristics and safety hazards of lithium-ion batteries.
Abstract not provided.
Modeling Competitive Reactions and Heat Transfer Effects Applicable to Thermal Runaway in Lithium-Ion Batteries.
Abstract not provided.
Energy Redistribution as a Method for Mitigating Risk of Propagating Thermal Runaway.
Abstract not provided.
Energy Redistribution as a Method for Mitigating Risk of Propagating Thermal Runaway.
Abstract not provided.
Avoiding cascading failure in battery packs through thermal analysis.
Abstract not provided.
Numerical Model of Decomposing Carbon Fiber Epoxy Composites.
Abstract not provided.
Exploring the length-scale dependence of pool fire behavior through computational analysis .
Abstract not provided.
Avoiding Cascading Failure in Battery Packs through Thermal Analysis and Considerations for Electric Aviation.
Abstract not provided.
Competitive Reactions and Heat Transfer Effects Applicable to Thermal Runaway Onset in Lithium-Ion Batteries.
Abstract not provided.
Intra-Particle Diffusion-Limited Thermal Runaway Predictions in Lithium-Ion Systems .
Abstract not provided.
Improving chemistry tabulation with partition of unity networks.
Abstract not provided.