Note: This discussion is about an older version of the COMSOL Multiphysics® software. The information provided may be out of date.
Discussion Closed This discussion was created more than 6 months ago and has been closed. To start a new discussion with a link back to this one, click here.
Smoothing battery current changes
Posted Sep 24, 2014, 5:28 p.m. EDT Battery Design, Studies & Solvers Version 4.4 0 Replies
Please login with a confirmed email address before reporting spam
See the model in question here: www.comsol.com/model/capacity-fade-of-a-li-ion-battery-12667
I am trying to increase the number of cycles, and I usually encounter errors in the transition between constant voltage discharge and constant current charge. The abrupt change in current density from ~+0.1 A/m^2 to 10 A/m^2 usually results in a lot of error and a large voltage spike which completely interrupts the charging-discharging cycle determined using the events interface.
As I understand it, the discontinuity of the current input is not something COMSOL likes.
I see that there are smoothing functions available, but I am not sure how to use them in concert with the events system used to determine the current load in this model. Any help would be appreciated.
Hello Corey Zusin
Your Discussion has gone 30 days without a reply. If you still need help with COMSOL and have an on-subscription license, please visit our Support Center for help.
If you do not hold an on-subscription license, you may find an answer in another Discussion or in the Knowledge Base.