Lithium Ion Battery Pack Architecture

Topics Reviewed
1. Energy Storage (Wh, kWh)
2. Voltage Range (48V, 350V and 700V+ are some examples)
3. Size (Physical Size)
4. Weight
5. Power Levels (C-Rate)
6. Series Cells
7. Parallel Cells
In this video Erik Stafl, President of Stafl Systems, discusses the architecture of lithium-ion battery packs, starting with the primary factors to consider. He then shows examples of series and parallel configurations. When cells are in series, the voltages are added and the capacity stays the same. When cells are added in parallel, the voltage remains the same and the capacity of the cells are added together. This is an important concept: series cells add voltage, parallel cells add capacity.
Using a real-world example, Erik shows a basic battery pack configuration with a series and parallel pack targeting both a voltage and energy capacity requirements.
For more information about Stafl Systems, visit us at staflsystems.com.
#battery #lithiumbattery #lithiumionbattery #batterypack #batterymanagementsystem

[@joeyroot9519]

Thank you for the content! I appreciate your patience and in depth explanation of Battery Pack Assembly. I look forward to more content.

[@francislee7770]

Great content!

[@Huawei-pidhisamestate]

explaining the series and parallels made me more confuse than I was before. Wouldn't be better just showing designed batteries with the polarities and the connections?!

[@wades12345]

hello, sir i would like to know why do we stress more on nominal voltage rather than specifying actual battery rated voltage

[@NawtieBoy96]

because thats what the avg voltage of the battery is over its entire charge or discharge range considering diff C-rates and temp values.

[@Telugu_Jathi_Galam]

It's really very good video

[@greatdane3343]

Excellent explanation, thanks Eric!

[@abcxyz8467]

Very explanatory video.

[@NawtieBoy96]

11:52 just a bit confusing here , you have got 12s - 3p but have shown 8s in each of them but now how is it connected in parallel to make up 96s-3p ?

[@ramshakaukab1177]

12s 3p as an example for module structure

[@chemseddineghrairi9843]

Great content!

[@bilalnaqvi8541]

Great video! I have one doubt, if you would be kind enough to address. In the video, for the selected configuration, three cells are connected in parallel, and then 96 such units are connected in series. It is also possible to connect 96 cells in series first, and then connect three of such 350 V units in parallel. Why is this approach not selected? If there are any demerits with the second approach, please do tell. Thank you.

[@ramshakaukab1177]

I think it's about the energy package design depending because to take 3 cells parallel and make 1 one then stack ecah 3p cells in series make the package compact and less space occupier than to take 96 in series first and then stacked them each 3p.. Upto my opinion it's about size and power level

[@pankajchaurasia2441]

@@ramshakaukab1177 I think it is because of Cell Balancing, in 96s3p we have to balance only 96 cells while in 96cells in series first and then three in parallel then we have to balance 288 cells.

[@EmilThomasThomas]

@@pankajchaurasia2441 i do not get your point. Why do we have to only balance 96 cells in this case? Don't we have to balance all the cells 288 in every case? Could you explain?

[@guillaumevincent716]

hi very interesting, but what about cooling and serviceability ?

[@akmhai2024]

Configurations 76P16s6s how to arrange for 45kW

[@BharatBhushanjnu]

Hello Erik,can you please elobarate how capacity of battery 🔋 is related with Parralel connection of grouping of cell.

[@akmhai2024]

How to design battery pack?

[@venusgkv140]

thanks sir

[@wondercartoonss]

@8:05 please tell the reason why not you choose 97?

[@jawidwahedi1872]

@12:10 because there is a standard of 6s, 12s and 24s in BMS in Industire. and 96/12 = 8

[@manvendrasingh8093]

Why we taken 96 cell in series rather than 97

[@yusicy]

so that it can be broken into the modular structure of 12s-3p. 96 is divisible by 8 and 12 while it'll get tricky to work with 97.

[@ashujoshi1632]

thanku sir