TI E2E Community
Battery Management - Gas Gauge Forum
cell imbalance bq20z95
We are rejecting batteries in our cycler during discharge because once cell difference may be greater than 200mv. We pick that number out of the air. Our batteries have 3 cells. The batteries are new and have <1% error. What percent error in cell voltage spread would I expect during the discharge or charge? Should we look at cell imbalance at the 100% charge. We send the battery out with 50% final charge.
During the charge cycle the TI brings the cells back together.
Cells should be checked for balance when they are fully charged. Impedance imbalances will show up when the cells are empty, so that's not a good place to check for imbalance.
Thanks for the help!!
All content and materials on this site are provided "as is". TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with regard to these materials, including but not limited to all implied warranties and conditions of merchantability, fitness for a particular purpose, title and non-infringement of any third party intellectual property right. TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with respect to these materials. No license, either express or implied, by estoppel or otherwise, is granted by TI. Use of the information on this site may require a license from a third party, or a license from TI.
TI is a global semiconductor design and manufacturing company. Innovate with 100,000+ analog ICs andembedded processors, along with software, tools and the industry’s largest sales/support staff.