Part Number:BQ76940
Hello,
We are developing a battery module which employs bq76940 + bq78350 + MSP430 in LiFePO4 battery energy storage system. After this thread (e2e.ti.com/.../2471248, we did not have the results as expected, even changing some balancing parameters. Then, we would like try an algorithm made by ourselves in order to improve balancing, minimizing battery capacity loss.
For this task, we need to command manually all balancing FETs through bq78350-r1. For this reason we have some doubts:
1-) Reading bq78350-R1 technical reference, we assume ManufacturerAccess() could be used to control balancing FETs. However, we did not find any command to accomplish this control. Is it really feasible control those FETs trough bq78350?
2-) If it is not feasible, this control should be accomplished directly through I2C interface by MSP430 controller, in my opinion. Is there any issue related on this circuit? We are worried it may have some data collisions, because the MSP430 e bq78350 may want access bq76940 at same time.
3-) If you need to access AFE trough MSP, do you have a sample code? I read a application note related to this topic, but, I have found any source code on website.
Thank you in advance.
Best regards,