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

2

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

3

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

4

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

5

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!