Скачать с ютуб What's Better? Rigid or Flexible Bus Bars - How to build a 48v Lifepo4 battery (Ep. 21) в хорошем качестве

What's Better? Rigid or Flexible Bus Bars - How to build a 48v Lifepo4 battery (Ep. 21)

In this video, I explore the differences between rigid and flexible bus bars. Using a FLIR camera, I run a ~54A, 10 minute load test, monitoring for heat differences in the two bus bar types. The root of this video comes from a growing concern I have over vibration and movement in battery packs on vehicles, a boat in my case. Compressing, and to a lesser degree fixing the cells in place will help, but over the span of years it's unreasonable to expect no movement in the pack. Given this, I worried about the long-term integrity of the bus bar to battery terminal junction. I wanted to see if there would be a noticeable difference if the rigid bus bars that came with the cells were replaced with flexible "bus bars" made from 4 awg marine wire. Referenced videos; ‪@WillProwse‬ - "Bloated LiFePO4 Cell Configuration to Reduce Terminal Stress!" -    • Bloated LiFePO4 Cell Configuration to...   ‪@LithiumSolar‬ - "LiFePO4 Battery Compression, Fixture, and Assembly - What's the Deal?" -    • LiFePO4 Battery Compression, Fixture,...   Fire - Note: This was NOT a Lifepo4 fire, I was mis-remembering. - https://diysolarforum.com/threads/dev... More relevant article on poor battery connection resistance heating - https://sinovoltaics.com/learning-cen... Chapters; 0:00 - Intro, Goals and Theories 2:58 - Test Descriptions 4:10 - Why I'm Not Compressing 5:28 - Making the Flexible Bus Bars / Jumpers 7:38 - A Kitty Interlude 8:50 - Crimper Tip 9:18 - Resistance Testing Flexible Bus Bars 12:05 - Resistance Testing Solid Bus Bars 13:30 - Resistance Test Summary 14:39 - BMS Balance Leads (re)Terminating 17:32 - Test Setup 22:00 - Solid Bus Bar Thermal Test 26:15 - Thermal Test Context (and Giddiness) 27:14 - Setting up for Flexible Test 29:12 - Flexible Bus Bar Test Start 31:25 - A Thermal Kitty Interlude 32:30 - A Winner! (In my opinion) 33:09 - A Request! The bus bars were made using; * Ancor Tinned Copper Battery Cable, 4 AWG (19mm²) - https://www.ancorproducts.com/en/p/11... * TE Connect 1/4" 4Awg Ring Terminals pn: 8-33469-2 - https://www.digikey.ca/en/products/de... * Crimped with a 35mm die, double-crimped to compress the entire barrel