Battery back up unit

Sandhya Lavety

Hi,

I am planing to design the battery back up unit for high current. I am arranging the battery cell in parallel (10P) for high current requirement. Since the voltage of each cell are not same it is difficult to monitor and cell balancing the battery pack (10P), so will you refer any design suggestion for parallel connected battery pack. I am very grateful for you.

Regards,

over 3 years ago

0 Shirish over 3 years ago

TI__Guru 57697 points

Hello Sandhya,

How much is the maximum current?

0 Sandhya Lavety over 3 years ago in reply to Shirish

Prodigy 60 points

Hi Shirish,

Actually I am planning to design 2.5kW battery back up unit. I am designing battery pack of Lithium-ion ( INR18650, 3000mAh, 3.6V/cell ) which is connected in 13S6P configuration 13 cells are connected in series of one string and such 6 strings are connected in parallel. BBU is charged normally with 2A and during discharging 52A is the highest current rating. Can you please suggest one or more references to control the voltage and current in series and parallel connected battery pack. I will be very thankful to you.

Regards

Sandhya

0 Shirish over 3 years ago in reply to Sandhya Lavety

TI__Guru 57697 points

Hello Sandhya,

I think https://www.ti.com/product/BQ78350-R1A is a good match. You can review it and let us know if you have any questions.

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Battery back up unit