BDS Demo Covers Three Example Projects Japan...
Transcript of BDS Demo Covers Three Example Projects Japan...
BDS Demo
Covers Three Example Projects
Japan 2012
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
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
Agenda
The 7.06 Release:
– The Prismatic wound cell in BSM
– New specific tools for property settings
– The 3D-Micro-Strutural Electrochemistry
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
Allow more module configuration due to specific spiral cell
shape
7.06 Release - Enhanced Pre-processor for Module
configuration
Staggered
End to End
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
7.06 Release - Electrical Resistance at welded contacts
7.06 Release – 3D-Micro-Structural Electrochemistry
Solve for Li-ion
Diffusion in
realistic 3D
Microstructure
The Future developments
– STAR-CCM+
• New External Casing extraction method
• Unwound Jelly roll visualization
• Lead-Acid batteries
• Documentation and Testing
AGENDA
The Future – New external casing extraction method
Automatically
Imprinted
The Future – Unwound Jelly roll visualization
For Micro-Hybrid Vehicle Application
– Prof Harb
The Future – Lead-Acid Batteries
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
THANK YOU VERY MUCH!