Sendyne Modeling Family

DescriptionThe Sendyne CellMod is a Li-Ion battery software

simulation tool that can predict cell and pack behavior

with an accuracy of better than 5% under a wide range

of test conditions. The software includes Sendyne’s

CellMod Pseudo-2D compact physics-based Li-Ion

battery cell model coupled with Sendyne’s proprietary

dtSolve, a solver proven capable of executing several

orders of magnitude faster than other commercially

available numerical solvers. The software may be used

as a standalone tool or can be integrated with other

simulation packages for whole system co-simulation

via the Functional Mockup Interface (FMI), an open

standard supported by all major simulation platforms.

CellMod takes into account physical processes taking

place inside the cells, such diffusion in solids, diffu-

sion in electrolytic solution, reaction kinetics, charge

transport, heat transport, etc. Because of this, CellMod

can predict future battery cell behavior with a high

degree of accuracy.

CellMod can be quickly adapted to represent any type

of Li-Ion cells, from NMC and LMO to LFP and NCA,

and all iterations of these cells. To achieve this, only a

simple (non-proprietary) set of experimental data on

the cell to be modeled is needed. Sendyne’s tool kit,

which includes state of the art parameter extraction,

then creates a unique CellMod version for a specific

cell. All unique CellMod versions are created under

NDA.

Applications ― Rapid prototyping

― Application specific cell selection

― BMS control

― Software in the loop

Features ― Models derived through a small number of experi-

ments

― Compact physical representation of Li-Ion cell

― Reduces testing time for cell designs

― For cell makers, ability to see effects of

changing design

― Allows for quick, virtual prototyping

― Predict performance of existing cells, enabling

informed vendor selection

― Model easily adapted for each cell design under

consideration

― Quickly choose the best cell for a particular ap-

plication

― Reduces quality control costs by 10-20%

― Enables inexpensive evaluation of competitive

products

1%3

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11

2%3%

Withinstatisticalvariationof eachexperiment

PerformanceA high level of accuracy can be achieved with Send-

yne’s modeling technology. The model whose perfor-

mance is shown below was optimized to predict run

time of a primary cell.

CellMod Simulation ToolCompact Physical Models for rapid battery prototy-ing and co-simulation

Sendyne® CellMod is based on Newman’s

pseudo-2D electrochemical model

Accuracy exhibited for each group of experiments. Num-

ber of experiments shown inside the circle

CellMod can adapt to any cell chemistry

Information in this document is provided in connection with Sendyne products and is believed to be accurate and reliable. However, Sendyne assumes no responsibility for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications are subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Sendyne. Sendyne, and the Sendyne logo are trademarks of Sendyne Corporation. Other names and brands may be claimed as the property of others. © 2017 Sendyne Corp. All rights reserved.

ContactSendyne Corp.

250 West Broadway

New York, NY 10013

info@sendyne.com

www.sendyne.com

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A model bundled with its solverCellMod compact physical models can be used in any

simulation independently of the simulation platform.

This is made possible because CellMod is bundled

with dtSolve, its own advanced numerical solver. A

simple API allows any simulation platform to provide

inputs and read the outputs of the model.

Cell Simulation

CellMod dtSolve

Process 1

Systems Model & Simulation

Process 2

SlaveFMI Wrapper

FMI Wrapper

FMI WrapperIF Master

P2D electrochemical compact modelCellMod is based on Newman’s pseudo-2D lithium ion

electrochemical model. The model dependent vari-

ables are the concentration of active ions across the

electrolyte, the concentration of reducing agents on

the surface and within the solid particles, the electri-

cal potential across the solid electrodes, the electrical

potential across the electrolyte and the local reaction

rate.

rr

Cell Model

dtSolve Model Solver

t0 , initial values,simulation parameters

t, load, Tamb V, Tsurface

Cell state

Sendyne CellMod for co-simulation

CellMod can be optimized for any cell chemistry. The model optimization is performed solely on experimental data

and published information for the cell. CellMod can achieve high levels of accuracy without detailed knowledge of the

cell design information which is typically not made available by the cell manufacturers. Model optimization is tailored

to the target simulation (i.e. run-time, power, etc.). The model shown below is optimized for run-time.