Project

CeLLife

CeLLife-project develops diagnostics and charging methods to support sustainable and efficient use of the lithium-ion batteries in numerous different applications. The methods provide comprehensive information about the battery state-of-health, internal impedance and, at the same time, active use of the method slows down the most common aging processes of the Li-ion batteries. Accurate impedance measurements require low power and can be executed very fast, even in less than a second. This makes the measurements suitable for cost-effective and safe quality-control of the Li-ion batteries and provides an effective tool for sorting used battery cells for second-life purposes. Therefore, the CeLLife-project provides flexible methods for optimizing the use of the Li-ion batteries over their whole lifetime, which helps to reduce overall costs and carbon footprint of the battery solutions.

The most important benefits:

  • Accurate and fast state-of-health diagnostics for Li-ion batteries:
    • Assists in optimizing battery use and maintenance
    • Forecasts faults and other safety issues
    • Is cost-effective tool for quality control
    • Enables safe second-life use batteries
  • Extended battery lifetime:
    • Reduces long-term costs (replace/maintenance)
    • Reduces overall emissions
    • Reduces need for oversizing batteries

Background

The CeLLife-methods are based on years of battery research conducted at Tampere University. The main emphasis of the research has been to develop fast and accurate techniques to measure lithium-ion batteries. In January 2021, Business Finland started to fund the CeLLife-project, which aims to investigate the market potential and possible ways to commercialize especially the developed battery-charging method.

Impact

The CeLLife charging method provides comprehensive information about the battery health and is able to forecast possible battery faults during the otherwise standard charging process. The obtained battery-health information can be utilized to optimize the use and maintenance of battery-driven applications, or to determine when batteries are in the end of their lifetime but still safe for the second-life purposes in different applications. In addition to the comprehensive diagnostics, active use of the charging method slows down aging processes and capacity fade of the Li-ion batteries, and therefore, directly extends their lifetime.

Funding source

Business Finland, Research to Business -funding

Contact persons

Profile

Tuomas Messo

Senior Research Fellow
Faculty of Information Technology and Communication Sciences