We are developing a battery management system for our pack. We have studied and analysed about the AD7280A slave evaluation kit (EVAL-AD7280A).
To analyse the behavior, we have been told to use the EVAL-CED1Z. Our doubt is without using the EVAL-CED1Z how can we monitor/alter the parameters?
Is it possible to use our own MCU?
If so, which is the recommended MCU to interface the AD7280A boards, so that we can build our own program for our battery pack?
Also, we would like to know how to interface AD7280A with our own selected MCU. Kindly advice.
Highly recommend evaluating the LTC6811 which is used even more widely in the EV BMS application.
Thanks for the information. We have gone through LTC6811 and it suits our need. Regarding active balancing, LT8584 is recommended. We have some queries regarding LT8584.
The limit of LT8584 discharge is 2.5A and it suits for a single Li-ion 18650 cell which we are working with. But our battery pack is around 55Ah rated, and with 20 cells. As per LT8584 technical note with parallel configuration we can have upto 50A which costs 20 LT8584 ICs. So overall approx for our design it requires around 20x20 = 400 LT8584 ICs? and thats way too high for our design. If so, then how huge battery packs are being actively balanced?
Can you please clarify?
In this case, two AD7280A monitors 12 lithium batteries on each monitoring circuit module.A total of 6 monitoring modules are used to monitor 72 lithium batteries in series.
Now there is such a problem that the high voltage battery cannot be charged, and the fault detector shows that the total difference between the monitoring circuit module voltage and the monitoring circuit voltage is greater than the calibrated threshold value.Can the evaluation board read the voltage of each lithium battery being monitored and the voltage of the monitoring circuit module?