Do you want to build the best thermal system?

Design it with Batemo!

Chall­enge

Imple­men­ting an effec­tive battery thermal manage­ment system is indis­pensable to maximize battery perfor­mance while ensuring safety and longe­vity under all opera­ting conditions. Yet, it imposes a signi­fi­cant chall­enge, as numerous objec­tives, practical constraints and design variants must be considered. Desig­ning a cooling concept for a new battery system proto­type or optimi­zing the design of an existing system means to have precise knowledge of heat genera­tion in the battery, heat storage within and heat trans­port across all compon­ents - something that is missing when techno­logy evolves as fast as in the battery community. 
This is true for many aspects of battery thermal manage­ment. Let’s make some examples: 
  • How does the cooling system impact the debalan­cing amongst cells in the module, and how can my BMS account for that?
  • How does the cooling system impact the tempe­ra­ture, state of charge and current distri­bu­tion within the cell, and how does that change with aging?
  • Is a bottom or side cooling concept more benefi­cial for my pack?
  • Which cooling strategy is required to optimize the fast-charging capabi­lity of my pack?
  • How much space do I safe when switch from water to immersion cooling?
  • How should I design the heat sinks to enable passive cooling of my pack?
Finding reliable answers to these questions requires to have accurate thermal models. However, the deter­mi­na­tion of a suitable thermal simula­tion approach poses a signi­fi­cant chall­enge, as sophisti­cated multi-dimen­sional thermal models offer higher accuracy, but often demand overwhel­ming compu­ta­tional and human resources. Achie­ving the optimal balance between simula­tion speed and accuracy for given design objec­tives and project constraints is difficult. 

Solution

You need a universal tool which seamlessly integrates into your simula­tion environ­ment and precisely predicts the heat dissi­pa­tion of your battery. And that is what the Batemo Cell Models and the Batemo Cube Model are. Batemos unique battery modeling techno­logy allows to accura­tely predict the dissi­pated heat conside­ring exactly your load profile and system design and can be integrated into all commonly used simula­tion tools. Consis­tent workflows across all length scales allow to connect system design objec­tives with thermal design parame­ters and thereby optimiza­tion of your thermal manage­ment on total system level. This increases product quality, while simul­ta­neously reducing development time and cost. 
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Fast

Batemo Cell Models run within seconds on normal office compu­ters. This enables co-simula­tion among diffe­rent simula­tion environ­ments conside­ring large parameter varia­tions and optimiza­tion workflows.
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Physical

Only if you split up the physical processes in the cell correctly, you can precisely calcu­late the heat dissi­pa­tion in the entire regime of opera­ting conditions, for all cell chemis­tries and formats, inclu­ding entropic effects and hyste­resis behavior. 
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Accurate

Quanti­ta­tively reliable simula­tion results need exten­si­vely validated models. The Batemo Cell Model is the most accurate battery cell model there is – guaran­teed! We always demons­trate the validity through exten­sive measu­re­ments that prove highest accuracy. 
Thermal manage­ment contains multiple aspects and occurs on multiple length scales. Holistic thermal optimiza­tion requires the smart combi­na­tion of diffe­rent simula­tion tools. The Batemo techno­logy seamlessly integrates into all common simula­tion tools, allowing you to choose exactly the right tool for your chall­enge at hand. 

Simula­tion Solutions:

Cell Internal

Analyze the local tempe­ra­ture distri­bu­tion in your cell and develop optimized cooling concepts.

System

Optimize the thermal network in your total system, check for debalan­cing in your pack and much more.

3D CFD

Predict the exact tempe­ra­ture distri­bu­tion even in a complex pack geometry and include fluid dynamics.

Cell Internal - Batemo Cube Model

Each indivi­dual Batemo Cube Model repres­ents a fraction of the cell’s active material. By conside­ring the heat and current transfer between single Batemo Cube Models, the cell exterior and the passive compon­ents (cell housing or poles), you gain infor­ma­tion about local distri­bu­tions of all internal cell quanti­ties. This helps you to under­stand, identify and predict local hot spots as well as to develop optimized cooling concepts for your cell. The Batemo Cube Model can be integrated in system simula­tion tools as well as 3D CFD environments. 

Real
battery Cell 

3D Discretiza­tion
with Cube Models

Inner Tempe­ra­ture Distribution 

System Simula­tion

To effici­ently couple thermal and electrical effects on module, pack, or system level, system simula­tion tools are the right choice. Batemo Cell Models are natively integrated in MATLAB Simulink, Simscape and AVL Cruise M for easy-to-use model setup and postpro­ces­sing. Additio­nally, Batemo Cell Model FMUs allow integra­tion into all common system simula­tion tools. To optimize your cooling strategy for all opera­tion conditions inclu­ding fast charging, check for debalan­cing in your pack due to thermal – electrical inter­ac­tions, run parameter varia­tions on system design varia­bles and much more. 

3D Compu­ta­tional Fluid Dynamics

When the exact tempe­ra­ture distri­bu­tion is needed in a complex pack geometry or a cooling system inclu­ding fluid dynamics, high fidelity 3D CFD tools are required. Batemo Cell Models are natively integrated in AVL Fire M for easy-to-use model setup and postpro­ces­sing. Additio­nally, Batemo Cell Model FMUs allow integra­tion into all common CFD simula­tion tools. 

development method

  • 1st

    Get the Batemo Cell Model or the Batemo Cube Model to have a physical, parame­ter­ized and validated battery cell model. 

  • 2nd

    Integrate the cell model into your system model or CFD model in your preferred simula­tion environ­ment.

  • 3rd

    Identify the best thermal system by varying thermal design parame­ters and compare diffe­rent cell, module or pack design variants. Consider arbitrary cells, cooling concepts and opera­tion strate­gies, as well as your constraints and your KPIs.

  • 4th

    Do a design of valida­tion experi­ments with a thermal manage­ment system proto­type and get it into your technology.

Advan­tages

Using the Batemo Cell Models and/or Batemo Cube Models digitizes your thermal system design, making it faster, lower cost while leading to better battery systems. This is how we generate value and contri­bute to your success. 
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Better

Using the Batemo Techno­logy, you will identify the best thermal system design and optimize the cooling strategy of your battery system. This is how you maximize robust­ness, lifetime and electro­che­mical perfor­mance of your system, and enables you to diffe­ren­tiate from compe­ti­tors.
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Faster

With the Batemo Techno­logy, the development of your thermal manage­ment system takes a fraction of time. By digitizing your thermal design process instead of building proto­types, you move optimally towards your objec­tives, thereby reducing the time to market of your technology. 
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Lower Cost

The Batemo techno­logy reduces cost of your thermal system design and optimiza­tion. Your development gets more efficient saving expenses on proto­ty­ping, testing and enginee­ring time. 

Interested?

Let’s Take the First step!

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