We use bq76952 manage 16 battery cells , if the cell wire is disconnected with bq76952, how can we read registers of bq76952 to identify the wire is opened.
Thank s
This thread has been locked.
If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.
We use bq76952 manage 16 battery cells , if the cell wire is disconnected with bq76952, how can we read registers of bq76952 to identify the wire is opened.
Thank s
Hi Jian,
While there is no Open-Wire Detect fault or bit, you will see the CUV and COV faults become high (CUV for the affected cell and COV for the cell above). From this you can infer an open wire scenario and can read from Settings:Enabled Protections A Register to see the bit status. You can also refer to the TRM Section 5.2.34 Cell Open Wire on how this mechanism works.
I've explained this briefly on this E2E thread: https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1202628/bq76942-cell-open-wire-and-current-measurement/4537382#4537382
Hope that helps!
Best,
-Luis T