If you have ever wanted to build your very own lithium battery pack you may be interested into tutorials created by Adam Bender describing the process in detail enabling you to build battery packs for a wide variety of different applications. Check out the two tutorials embedded below to learn how to design your very own lithium battery and build your very own lithium battery pack.
In this tutorial, I’ll provide step by step instructions on how I built a 48 cell lithium ion battery pack out of 18650 cells. First I’ll cover the mechanical structure and how the cells are held together. Next I’ll go over how to join cells together to form parallel and serial connections. I’ll show a lot of the details that go into spot welding, and some good techniques to used.
I’ll cover how to add a battery management system to the pack to enable proper charging, and not damage any cells. I’ll show how to solder on the balance lines while minimizing the heat absorption by the cells. This is part 1 of a 2 part series. In Part 2 (coming soon!) I’ll release all the engineering and design that went into this battery pack, as well as hookup schematics and more details then you’d ever want on how to design your own system.
In this video tutorial, I’ll go through all the detailed information needed when designing a lithium battery pack with 18650 cells. Designing a custom lithium battery pack is a fun way to learn about electricity and engineering. Lithium batteries can be used for countless applications including electric bikes, scooters, vehicles, backup power suppliers, off the grid solutions, and much more. I’ll cover 5 main topics that’ll help you design your own battery packs
1. How a lithium battery cell works. Everything from the rolled internals and materials to how the lithium ions are transported during charge and discharge.
2. Basic electricity fundamentals and Ohm’s law.
3. Figuring out how many cells to put into a battery given voltage and current requirements
4. How to join cells together using a spot welding technique with busbars, and how to size those busbars for different current loads.
5. Battery management systems, hookup and wiring schematics and optional accessories that can help improve the functionality of a battery pack.
Source: Adafruit