We specialize in high-precision simulation software for lithium-ion-batteries. For every lithium-ion cell, we create physical models and demonstrate global validity. We call our models Batemo Cells. They help in solving central challenges of battery system development and answering typical design questions such as:
- Which cell technology is most suitable for a specific application?
- What does an optimal pack design look like?
- Which operational strategy extends the lifetime of the battery?
- How can innovative fast charging methods be developed?
- How can safety be guaranteed in complex systems, under all circumstances?
In industrial research and development, there is a well-established way to cope with these challenges: design decisions and development processes are based on simulations. This requires a computer-based representation of the battery cell known as a model or digital twin. Today, two approaches are usually used for that purpose.
Equivalent Circuit Models
inaccurate and no insights
Equivalent circuit models (ECM) mimic the terminal behavior of the cell using simple elements like resistors, capacitors or other impedance elements. The model parameters are usually multi-dimensional lookup-tables obtained from various measurements. Because the fundamental model structure does not match the cell physics and since nonlinearities are not properly taken into account, ECMs are inaccurate and do not allow an insight into the cell.
Using finite element method (FEM) tools, the microstructure of the electrodes is reconstructed and the system of partial differential equations is solved spatially. This approach is error-prone; parameterization takes several months and the model validity must be ensured by you. Moreover, simulations will usually take several hours. This makes the FEM approach too complex and too slow for industrial development.
Battery Models based on the Finite Element Method
complex and slow
Batemo Cells combine the best of both approaches: the easy handling and speed of the ECM models with the physicality and accuracy of the FEM models. They are based on the fundamental idea of precisely describing and virtually reproducing all relevant processes inside lithium-ion-batteries. This is quite complicated: physical, chemical and thermodynamic processes are coupled in complex ways, depending on operating conditions and age. Everything happens simultaneously and runs on different length and time scales: from electrode particles just a few micrometers in size, up to processes in the centimeter range of cell and pack size. Some processes take just milliseconds, others need months. You will receive our Batemo Cells designed for the development environment you are familiar with. Through optimized parameterization methods, we easily and quickly create Batemo Cells for your cells and demonstrate their validity. With a flexible interface and simulation times in a matter of seconds, the Batemo Cells will seamlessly integrate into your industrial research and development processes.
You can use our Batemo Cells as digital twins and thus save time-consuming and lengthy measurements. Your battery system development becomes model-based, making it faster, safer, more flexible, and leading to better products. This is how we contribute to your success.
Fast battery charging is used in many applications, where the batteries must not be damaged. You can develop minimal-aging, fast-charging methods for your battery packs using our Batemo Cells. Thus, charging time can be cut by a third without additional aging of the cells.
With Batemo Cells, the innovation potential of new ideas can be easily evaluated and complex functions can be developed much more quickly. This is how you can enhance your technological leadership.
You can monitor your batteries during operation. You can develop safety features with Batemo Cells, detect critical conditions early, and design efficient strategies to ensure safe operation under all conditions.
Battery packs are often used in a variety of products with different chargers. Using Batemo Cell simulations, you can ensure overall compatibility.
If you are introducing new technologies to the market, Batemo Cells will help you bring high-quality, innovative ideas to the market very quickly. Key product features can be improved and differentiated from competitors, leading to increased market share.
Batemo Cell simulations are significantly faster than real-time laboratory tests. You can perform comprehensive, simulation-based test scenarios with single cells, battery packs, or total systems in a fraction of the time.
With Batemo Cells, single functions or sub-systems can be thoroughly tested in the early stages of the development process. You can thus detect design errors early on and significantly reduce the failure rate of your design and production validation.
Batemo Cells reduce the cost of battery system development in many ways. For instance, you can reduce expenses on prototyping, avoid performing extensive lab measurements, and decrease your development time.