Lithium-ion battery characterization with electrochemical impedance spectroscopy used in state of power estimation

Addressing greenhouse gas emissions from transportation is critical for Canada to meet its climate goals. Batteryelectric
vehicles are expected to make a substantial contribution to this goal. Manufacturing and end-of-life
disposal of the batteries results in significant greenhouse gas emissions. Understanding the state of health of the
batteries can keep the batteries in the vehicle for longer, delaying or avoiding replacement. It can also maximize
the potential to re-use vehicle batteries for other applications when they are no longer good enough for use in a
vehicle. This project will investigate the use of electrochemical impedance spectroscopy to assess the state of
health of battery packs. The academic team will work with Greenlight Innovations to evaluate a custom-built
system that applies this method at the voltage levels encountered in a modern vehicle. The results of the work will
guide future evaluation of the technique s use for assessing batteries in service, during maintenance, or for
repurposing at end-of-life.

Faculty Supervisor:

Gordon McTaggart-Cowan;Jiacheng Jason Wang

Student:

Partner:

Greenlight Innovation

Discipline:

Engineering

Sector:

Manufacturing

University:

Simon Fraser University

Program: