Abstract
This paper describes a systematic study of the effect of cell relaxation after a charge or discharge event. The EIS technique was used to investigate how the properties of the cells changed with time after charge or discharge up to a maximum of 15 hours. It was found that different chemistries show different relaxation rates and frequency dependence of R o and R d . The cells still showed a relaxation at 15 hours after a charge/discharge event. A suggested compromise of measurement accuracy and test length is to measure the properties of cells 4 hours after a charge/discharge event.
| Original language | English |
|---|---|
| Publication status | Published - 2014 |
| Externally published | Yes |
| Event | 35th FISITA World Automotive Congress, 2014 - Maastricht, Netherlands Duration: 2 Jun 2014 → 6 Jun 2014 |
Conference
| Conference | 35th FISITA World Automotive Congress, 2014 |
|---|---|
| Country/Territory | Netherlands |
| City | Maastricht |
| Period | 2/06/14 → 6/06/14 |
Funding
This work was supported by the High Value Manufacturing Catapult centre at WMG, University of Warwick. The authors are thankful to all ‘cell work-stream’ members of HVM Catapult for their valuable advice, comments and discussions.
Keywords
- EIS
- Impedance
- Li-ion battery
- Relaxation
- Testing
ASJC Scopus subject areas
- Automotive Engineering
- Safety, Risk, Reliability and Quality
Fingerprint
Dive into the research topics of 'An exploration of Li-ion cell relaxation using EIS'. Together they form a unique fingerprint.Cite this
- APA
- Standard
- Harvard
- Vancouver
- Author
- BIBTEX
- RIS