Thermal Design of Battery Pack - IV

This lesson covers the importance of thermal management in battery packs, focusing on the role of thermal conductivity in identifying heat generation spots and maintaining temperature uniformity. It delves into the impact of isotropic and anisotropic thermal conductivity on battery pack design, using case studies to illustrate the effects. The lesson also discusses the role of heat sinks in improving the lifespan of electronic components like MOSFETs, and the importance of current parallelization. It further explores different thermal management systems, including natural convection, forced air cooling, and cold plate cooling, and their impact on battery pack performance and lifespan. The lesson concludes with the importance of keeping thermal management systems simple and serviceable, and the factors to consider when selecting materials for these systems.

Video Highlights

00:17 - Introduction
01:07 - Directional thermal properties study for simulation of cells
03:58 - Explanation of the temperature plots and impact of thermal conductivity on temperature uniformity
07:16 - Case study on busbar ohmic heating simulation
09:30 - Case study on MOSFET thermal management in BMS
13:51 - Case study on module thermal management
16:47 - Summary of the good thermal design in battery packs

Key Takeaways

- Thermal management in battery packs is crucial for maintaining temperature uniformity and identifying heat generation spots.
- Isotropic and anisotropic thermal conductivity can significantly impact battery pack design and performance.
- Heat sinks can double the lifespan of electronic components by reducing their operating temperature.
- Different thermal management systems, such as natural convection, forced air cooling, and cold plate cooling, have varying impacts on battery pack performance and lifespan.
- Thermal management systems should be simple, serviceable, and consume low parasitic power to reduce operational costs.