Project 1
YOUR ANSWERS:
Aim :- To design a battery pack for a car roughly 150kw with 120 v use 3500mah 3.6 nominal nmc chemistry cell
- Design the battery pack configuration.
- Draw the BMS topology for this battery pack.
Answer:-
For question : 1 Design the battery pack configuration.
Given data
So here we Designed the battery pack configuration by calculating the no of cells in series and no cells in parallel and we also done the rounding off the no of ceels in series and parallel
Question : 2.Draw the BMS topology for this battery pack.
- Here The main function of Battery Management System BMS is to ensure that the battery is protected and any operation out of its safety limit is prevented.
- It monitors the battery pack's state of charge SOC along with the state of health SOH
BMS topologies fall in three types:
- Centralized: It is a single controller is connected to the battery cells through a multitude of wires
- Distributed: It is a BMS board is installed at each cell with just a single communication cable between the battery and a controller
- Modular: It is a few controllers each handling a certain number of cells with communication between the controllers
- Here we mainly used the Master Salve topology because This architecture comprises of the Master and Slave BMS units.
- so by this The slave unit monitors balances and controls a group of battery cells within the battery module.
- It communicates with the master unit through a communication interface.
- The Master unit is responsible for state estimation control of Power Distribution Unit PDU and external communication.
- The master-slave BMS is similar to a modular system in the sense that it uses multiple identical modules the slaves each measuring the voltage of a few cells.
- However the master is different from the modules and does not measure voltages.
- It only handles computation and communications.
- Importance of BMS Architecture for EV Battery Systems
- Measurement Precision
- Connection Reliability
- Expansion Versatility
conculsion:
We have succesfully designed the batter pack configuration and we drawn a BMS topology for the battery pack.