Smart Battery I: Hardware and System Design (2024)
Doctoral School of Engineering and Science at Aalborg University
Organizer: Prof. Remus Teodorescu, Aalborg University.
Lecturers:
Asst. Prof. Abhijit Kulkarni, Aalborg University
Prof. Remus Teodorescu, Aalborg University
ECTS: 2.0
Date/Time: 25-26 November 2024
Deadline: 04 November 2024
Place: AAU Energy, Pontoppidanstraede 101 room 1.015, Aalborg, Denmark
Max no. of participants: 30
Description: Lithium-ion batteries have a wide range of applications. The improvement in their energy and power densities have greatly enhanced the growth of e-mobility. Higher penetration of electric vehicles can happen faster with safer, more reliable and intelligent ali-ion energy storage systems.
This two-day course develops the concept of ‘Smart Batteries (SB)’ for Li-ion cells. Smart battery integrates power electronics and intelligent control to the cells. This is done by using a half-bridge circuit connected across the cell terminals. The course introduces the operation of the SB with the integrated half bridge circuit.
The course gives a detailed overview of the state-of-the-art battery management systems, chargers/charging methods. This discussion evolves into the advantages of the SB in making smart BMS and energy efficient charging methods and lifetime improvement. The design of the SB, optimal device selection, PCB design for different geometries of the cells (prismatic, pouch and cylindrical ) will be discussed. The SB also has intelligent control and the course introduces the communication architecture and controller selection for the SB management systems. Simulation exercises in Simulink/Plecs/LTSpice will be used as tools to understand and appreciate the SB concept and hardware architecture.
Day 1: Power Electronics in Li-ion battery systems – Remus Teodorescu, Abhijit Kulkarni (8 hours)
- Introduction to Li-ion batteries, pack structure, geometries and terminology of battery energy systems
- Introduction to Smart battery
- Balancing of cells in a pack – passive, active and using SB
- Charging methods overview
- Power electronics topologies integrated with batteries for chargers and their comparison with SB based chargers
- Battery management systems and recent trends
Day 2: Smart Battery Design, Abhijit Kulkarni, Renata Oliveira de Sousa(8 hours)
- Detailed architecture of the SB
- Design of the half bridge, MOSFET selection, power loss analysis
- Design of PCB for different geometries of Li ion cells
- Controller selection and SB management system design
- Pulsed operation, cell balancing in SB, and energy efficient charging methods
Prerequisites: Fundamental understanding of characteristics of Li-ion batteries, and familiar with programming using Simulink and any circuit simulator such as Plecs or Spice.
Note: the course language is English.
Form of evaluation: Students are expected to simulate SB and it’s integration with power electronics converters and make a report of the same.