BDS Demo Covers Three Example Projects Japan...
Transcript of BDS Demo Covers Three Example Projects Japan...
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BDS Demo
Covers Three Example Projects
Japan 2012
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Projects Covered
High Energy versus High Power cell designs
– What determines power/energy of cell?
Compare chemistry
– How to estimate energy of various battery chemistries
Cell Shape
– Compare spirally-wound prismatic and cylindrical cells, and stacked-plate
cells
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Project 1: HEvsHP
Objective: Compare design and performance of lithium-ion cell designed
for energy and one designed for power.
Approach:
– Use 18650 size cells
– Show GUI tree structure of cell design
– Run simulations of discharge at 1 to 20 Amperes
– Compare energy delivered at different currents
– Compare cell designs
Key Points
– Can estimate power capability of cells based on physics models
– BDS provides helpful tools
• Database of formulations
• Outviewer
• Compare batteries
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Project 2: CompareChem
Objective: Examine the effect of cell chemistry (positive and negative
active materials) on energy of cell.
Approach:
– Use 18650 size cells
– Run simulations of discharge at 0.1 Amperes (low current to maximize
energy)
– Compare energy delivered by different cells
Key Points
– Energy of a given cell chemistry can be estimated based on materials, even
materials that are not yet practical
– Important to consider full cell when evaluating improved materials
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Project 3: CellShape
Objective: Examine the effect of cell design (spiral cylindrical and
prismatic, and stacked plate) on thermal behavior.
Approach:
– Fix capacity at ~1.9 Ah
– Run simulations of discharge at 2 Amperes
– Compare capacity and temperature of cells
Key Points
– All major cell designs can be developed using BDS
– Demonstrate wound and stack designs
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Battery Modeling Road-map
Japan 2012
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Agenda
The 7.06 Release:
– The Prismatic wound cell in BSM
– New specific tools for property settings
– The 3D-Micro-Strutural Electrochemistry
The Future developments
– STAR-CCM+
• New External Casing extraction method
• Unwound Jelly roll visualization
• Lead-Acid batteries
– Battery Design Studio - BDS
• Models improved formulation
• Calendar Ageing
• Documentation and Testing
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Agenda
The 7.06 Release:
– The Prismatic wound cell in BSM
– New specific tools for property settings
– The 3D-Micro-Strutural Electrochemistry
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In addition to the pouch and cylindrical wound cells topologies
BSM comes now with the Prismatic wound cell shape.
– The prismatic wound cell shape is characterized by a prismatic shape
central mandrel:
–
7.06 Release - Topology
BDS BSM
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Allow more module configuration due to specific spiral cell
shape
7.06 Release - Enhanced Pre-processor for Module
configuration
Staggered
End to End
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TEMPERATURE FIELD
Easily apply a thermal conductivity property on a spirally wound shape
7.06 Release - Anisotropic Thermal Conductivity
radial
Tangential
axial
Easily apply on
several parts using
a single field
function
Radial Vector
field
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7.06 Release - Electrical Resistance at welded contacts
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7.06 Release – 3D-Micro-Structural Electrochemistry
Solve for Li-ion
Diffusion in
realistic 3D
Microstructure
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The Future developments
– STAR-CCM+
• New External Casing extraction method
• Unwound Jelly roll visualization
• Lead-Acid batteries
• Documentation and Testing
AGENDA
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The Future – New external casing extraction method
Automatically
Imprinted
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The Future – Unwound Jelly roll visualization
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For Micro-Hybrid Vehicle Application
– Prof Harb
The Future – Lead-Acid Batteries
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Complete re writing of BDS documentation
– Creation of an on-line documentation in the same format as STAR-
CCM+’s documentation
– Creation of tutorials
Increased testing
– Develop a rigorous testing to maintain BDS robustness
The Future – Documentation and Testing
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THANK YOU VERY MUCH!