simulationx model library: electric energy storages

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SimulationX model library:Electric Energy Storages

1


Fields of Application

• Simulating the multi-physical operating behavior of a battery• Main use cases:

• Quick / advanced electricsimulation

• Thermal analysis• Function development• Aging prediction

• Models withscalable complexity

2 Model library Electric Energy Storages


Modeling Concept

• Electric model (V)• Thermal model (T)• Parameter adaption model (P)

• Modular structure:• Easy to extend• Possibility to add new features• Separate development

and testing of each model



Electric Model

• Single-cell models (example: dynamic cell model)• Stack models• Static models:

• Simplified electric equivalent circuit• Short simulation time• Minimum number of

input parameters required

• Dynamic models:• Sophisticated

electric equivalent circuit• Realistic operational behavior• Advanced parameterization



Thermal Model

• Thermal operating behavior• Examples for influences:

• Environmental temperature• Electric losses• Thermal capacity• Cooling circuit• ....

• Scalable thermal models included:• Prismatic cell• Cylindrical cell



Parameter Adaption Model

• Calculates Cp, Ocv, Rs, RC-values

• Configures electric model

• Independent variables: Soc, T

• Parameterization:• Polynomial functions:

Cp, Rs, RC-values• Tables:

Cp, Rs, RC-values, Ocv



Aging Model

• The capacity and the behavior of a cell change with ageand cycle number. These effects are influenced by the most important factors temperature and SOC.

• Calendrical aging (aging over time)• Extended Arrhenius equation:

• Cyclic aging (aging factor overnumber of cycles):

• Polynomial functions• Tables



Examples

• Advanced battery stack model without aging connected to electric load

• Generic parameter sets for LFP and NMC cells are included

• Modify the parameters (only if required), using the chosen set as a basis



Model Combination

• Combination of models from the Hybrid Powertrains library & the Electric Energy Storages library(MSL based)

• Electrical analog interfaceto connect the batterymodel with thehybrid model



Benefits

• Simulation of electric, thermal and aging behavior within one library

• Modular structure for a broad field of applications and different levels of detail

• Validated models and parameter sets for reliable simulation results

• Easy adjustment to customer specific needs (e.g. model adaptations and parameter generation by AIT)


© ITI GmbH simulationx.com 11 Model library Electrical Energy Storages

Try out Electric Energy Storages library in SimulationX at www.simulationx.com

AIT GmbHGiefinggasse 21210 Vienna, Austria

T +43(0) 50550 - 6578

ait.ac.at

ITI GmbHSchweriner Straße 101067 Dresden, Germany

T + 49 (0) 351.260 50 - [email protected]

simulationx model library: electric energy storages

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