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Cell Testing & Characterization - I — Lesson 1

This lesson covers the lithium-ion cells, battery packs, and cell testing. It delves into the process of making battery packs from cells, the importance of cell testing before creating battery packs, and the interpretation of a typical cell data sheet. The lesson also explains the significance of various parameters such as normal capacity, nominal voltage, internal impedance, and discharge cutoff voltage. It further discusses the impact of charge rate, discharge rate, depth of discharge, and temperature on the life cycles of a battery pack. The lesson concludes with an overview of different types of tests for cell performance, aging, safety, and thermal aspects.

Video Highlights

00:19 - Introduction
00:54 - Typical data sheet of a cell
04:46 - Important parameters not found in data sheet
08:10 - Different types of cell tests including cell performance, aging test, safety aspects, and thermal test
11:51 - Steps involved in testing a cell
14:32 - Capacity test, OCV versus SOC test, and internal resistance measurement
29:06 - Q&A discussion

Key Takeaways

- Cell testing and characterization are crucial before creating battery packs.
- Various parameters such as normal capacity, nominal voltage, internal impedance, and discharge cutoff voltage are essential in understanding a cell's performance.
- The life cycles of a battery pack are influenced by factors such as charge rate, discharge rate, depth of discharge, and temperature.
- Different types of tests are conducted to assess cell performance, aging, safety, and thermal aspects.