State-of-charge estimation with aging effect and correction for lithium-ion battery
This study proposes Lithium-ion battery aging correction state-of-charge (SOC) estimation techniques. Although the battery is aging, the SOC error estimation system maintains the setting range using a low-cost 8 bit micro-controller. The proposed method can track and correct the open-circuit voltage against capacity in the battery management system by comparing the capacity error with the coulomb counting and look-up table methods. The experimental results verify that the SOC estimation error is still lower than 3.5% after 1000 cycles. The SOC estimation verification platform verifies the Sanyo UR18650 W lithium battery. After 300 accelerated aging cycle charge–discharge tests, the test results showed that the SOC prediction precision for an aged battery is as high as 2.67%.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/issn/20429738
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Supplemental Notes:
- Abstract reprinted with permission of the Institution of Engineering and Technology.
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Authors:
- Cheng, Ming-Wang
- Lee, Yuang-Shung
- Liu, Min
- Sun, Chein-Chung
- Publication Date: 2015-6
Language
- English
Media Info
- Media Type: Digital/other
- Features: Figures; References; Tables;
- Pagination: pp 70-76
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Serial:
- IET Electrical Systems in Transportation
- Volume: 5
- Issue Number: 2
- Publisher: Institution of Engineering and Technology (IET)
- ISSN: 2042-9738
- EISSN: 2042-9746
- Serial URL: https://ietresearch.onlinelibrary.wiley.com/journal/20429746
Subject/Index Terms
- TRT Terms: Automotive computers; Deterioration; Errors; Lithium batteries; Mathematical prediction; Service life; Storage batteries; Voltage
- Uncontrolled Terms: Battery management systems; State of charge
- Subject Areas: Energy; Highways; Vehicles and Equipment; I90: Vehicles;
Filing Info
- Accession Number: 01566513
- Record Type: Publication
- Files: TRIS
- Created Date: Jun 16 2015 11:34AM