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Hi all,
I have gone through EMB1499Q datasheet. I understood the design but I am not clear with the cell balancing method adopted by the forward converter.
Could anyone guide me to understand the concept?
Further, the same IC can we use for balancing 23 cells?
Thank you,
Regards,
Prashant
7183.bms.pdfDear Mr. David.
Thank you so much for your explanation. We got the concept.
As we are trying to balance 23 cells we have designed the basic architecture as shown in the attached file.
Kindly let us know whether it is okay or not.
Thank you for your kind support.
Regards,
Prashant
Hi Prashant,
I would recommend using 1 TMS570, and utilizing the daisy chain functionality of the pl455. I would also recommend splitting it between 2 different EMB1499's. This way you can have two very clean "submodules" on one PCB. I think going this route will be much better practically and reduce your chances of running into issues like strange GND loops, EMI, etc. Additionally, it will let you balance two cells out of the 23s module simultaneously.
If you would like a diagram, I could draw one up. I hesitate to recommend going with this set up.
Dear Mr. David,
We really appreciate for your kind support.
Based on your suggestion we have modified our diagram. Kindly once have a look at it.
We are planning to charge and discharge the individual cell across the stack voltage. Hence, we have divided battery stack voltages in two parts: Vstack-1(1 to 16) and Vstack-2(17 to 23).
Kindly see the attached file and let us know whether it is okay or not.
Thank you,
Regards,
Prashantbms_1.pdf