Abstract
Current battery data sheets focus on battery energy and power density, neglecting thermal performance. This leads to reduced system level efficiency since cells with poor thermal performance require larger, heavier cooling systems to maintain cell temperatures in a suitable range. To address this a new metric, the Cell Cooling Coefficient (CCC), has been developed and it's use as a tool for appropriate cell selection has been demonstrated. It also allows the pack designer to calculate which cooling direction method is most suitable by comparing CCC values for tab and surface cooling. The metric is the ratio between the heat rejected from the cell and the temperature difference between the hottest and coolest point. It therefore has units WK-1 and allows a pack designer to easily calculate the required amount of cooling power for the cell given a maximum acceptable temperature rise. In this paper we describe a system and method for the accurate determination of the CCC with the aim of facilitating wider adoption of the metric. The system is able to reliably quantify the surface and tab cooling CCC of any pouch cell.
| Original language | English |
|---|---|
| Article number | e00257 |
| Number of pages | 15 |
| Journal | HardwareX |
| Volume | 11 |
| Early online date | 13 Jan 2022 |
| DOIs | |
| Publication status | Published - 1 Apr 2022 |
Bibliographical note
Funding Information:This project was funded by Innovate UK under the Faraday Challenge as part of the Advanced BAttery Thermal MANagement (BATMAN) project and by the Faraday Institution funded Industry Sprint Project, TOPBAT. The sponsors had no role in the study design, data collection, analysis or interpretation.
Publisher Copyright:
© 2022 The Author(s)
Keywords
- Battery thermal management
- Electrochemistry
- Novel test methods
- Power systems