Other Parts Discussed in Thread: TIDA-00792, BQSTUDIO, EV2400
Hello,
We have designed a BMS + battery pack based on TIDA-00792.
We have encountered several problems while performing charge and discharge cycles:
Q1:
FCC and RSOC do not update their values correctly unless a reset is performed.
The RSOC updates as the voltage decreases, but several times it does not update correctly, resulting in an incorrect RSOC calculation (for example, 0%) when battery voltage corresponds to a higher or a different RSOC value.
In these cases, a reset must be performed from BQstudio to recalculate the RSOC and FCC values correctly according to the cell characterization (after reset, for example, it goes from 0% to 20%). What could be causing this or how could we solve it?
Q2:
During vibration tests, the BMS loses SMBus communications and cuts the output voltage, and it does not reestablish until the activation button is pressed (making TS1 > Vboot). It seems that the battery goes into shutdown, but in this case the register with the shutdown entry counter (“No of shutdowns” in “Lifetimes”) does not increase. In what cases can this situation occur?
Thank you very much,
Marc Gera
