Developing Reliable Lithium-Ion Batteries Using CFD Simulation
Since their commercial introduction in the early 1990s, lithium-ion batteries have emerged as the most popular form of rechargeable energy storage technology in the portable electronics and electric vehicle markets. The lightweight lithium compounds that comprise the electrodes result in a high specific energy (watt-hours/kilogram) as compared to other types of batteries. Battery breakthroughs require R&D involving several disciplines (thermal, mechanical, electrochemistry) and scales (individual electrode to complete battery pack). Conventional engineering methods require large amounts of costly trial and error in order to develop prototypes and finally to create a viable product. In addition to CFD, a complete battery development process requires access to multiple simulation physics including structural analysis, electronics and systems.
Lithium-Ion Battery Challenges:
- Cost - Must be affordable
- Lifetime - Should last the lifetime of the device
- Capacity - Power the device until charging is convenient
- Safety and Durability - Batteries store a large amount of energy and can potentially explode!
- Automating Battery Pack Design - Article
- End-To-End Cell Pack System Solution: Rechargeable Lithium-Ion Battery - White Paper
ANSYS CFD can simulate battery performance both at the individual cell level and for an entire battery pack to reduce development cost and speed time to market.
- Shorten design cycles by reducing costly trial and error development
- Optimize tradeoffs between cost, energy density, life cycle, operating temperature and safety
- ANSYS Fluent includes standard Li-Ion battery models
- Account for all the relevant physical forces in a single, practical environment where each physics is best in class