Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
IR for cells in parallel
#2
The formula is valid but the actual calculated value is less relevant than resistance matching. Matching internal resistance of a parallel pack is important in ensuring the long cycle life of the battery pack. As example, a 20% difference in cell internal resistance between two cells cycled in parallel can lead to approximately 40% reduction in cycle life when compared to two cells parallel-connected with very similar internal resistance.
That means internal resistance mismatch leads to higher than normal currents during cycling, which leads to abnormal temperatures, which leads to thermal damage therefore capacity reduction.
Reply


Messages In This Thread
IR for cells in parallel - by Chablism - 12-21-2019, 02:38 AM
RE: IR for cells in parallel - by Overmind - 12-23-2019, 11:09 AM
RE: IR for cells in parallel - by Crimp Daddy - 12-31-2019, 12:37 AM
RE: IR for cells in parallel - by daromer - 12-31-2019, 08:47 AM
RE: IR for cells in parallel - by Crimp Daddy - 01-02-2020, 04:36 PM
RE: IR for cells in parallel - by daromer - 12-31-2019, 06:48 PM
RE: IR for cells in parallel - by daromer - 12-31-2019, 08:13 PM
RE: IR for cells in parallel - by daromer - 01-02-2020, 04:53 PM

Forum Jump:


Users browsing this thread: 1 Guest(s)