Internal resistance variances in lithium-ion batteries and implications in manufacturing
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2012.
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| Format: | Thesis |
| Language: | eng |
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Massachusetts Institute of Technology
2012
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| Online Access: | http://hdl.handle.net/1721.1/74917 |
| _version_ | 1826217879383572480 |
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| author | Gogoana, Radu |
| author2 | Sanjay E. Sarma. |
| author_facet | Sanjay E. Sarma. Gogoana, Radu |
| author_sort | Gogoana, Radu |
| collection | MIT |
| description | Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2012. |
| first_indexed | 2024-09-23T17:10:38Z |
| format | Thesis |
| id | mit-1721.1/74917 |
| institution | Massachusetts Institute of Technology |
| language | eng |
| last_indexed | 2024-09-23T17:10:38Z |
| publishDate | 2012 |
| publisher | Massachusetts Institute of Technology |
| record_format | dspace |
| spelling | mit-1721.1/749172019-04-12T09:38:54Z Internal resistance variances in lithium-ion batteries and implications in manufacturing Gogoana, Radu Sanjay E. Sarma. Massachusetts Institute of Technology. Dept. of Mechanical Engineering. Massachusetts Institute of Technology. Dept. of Mechanical Engineering. Mechanical Engineering. Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2012. Cataloged from PDF version of thesis. Includes bibliographical references (p. 80). This thesis addresses issues in manufacturing that lead to cell DC internal resistance (DCIR) variance, provides an overview of generally accepted cell degradation mechanisms and modeling techniques associated with IR as a function of cycling, models the cycle life of a simple battery pack of two parallel-connected cells that start off as unbalanced, and validates it with experimental data from cycle life testing of parallel-connected LiFePO₄ cell groups. Experimental results from samples of commercially available cells show that variance in the thickness of the electrode layer is correlated to differences in capacity and DCIR. In cycle-life testing, parallel-connected cell groups with larger differences in DCIR between the cells experienced faster cycle life degradation. The proper matching of DCIR values within a battery pack, relative to the designed C-rate capability of the pack, is important to ensuring maximum useful life of the battery pack. This is especially important for parallel-connected cell groups, where the current distribution to each cell is typically not monitored in order to reduce battery management system complexity. by Radu Gogoana. S.M. 2012-11-19T19:18:17Z 2012-11-19T19:18:17Z 2012 2012 Thesis http://hdl.handle.net/1721.1/74917 815725069 eng M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission. http://dspace.mit.edu/handle/1721.1/7582 87 p. application/pdf Massachusetts Institute of Technology |
| spellingShingle | Mechanical Engineering. Gogoana, Radu Internal resistance variances in lithium-ion batteries and implications in manufacturing |
| title | Internal resistance variances in lithium-ion batteries and implications in manufacturing |
| title_full | Internal resistance variances in lithium-ion batteries and implications in manufacturing |
| title_fullStr | Internal resistance variances in lithium-ion batteries and implications in manufacturing |
| title_full_unstemmed | Internal resistance variances in lithium-ion batteries and implications in manufacturing |
| title_short | Internal resistance variances in lithium-ion batteries and implications in manufacturing |
| title_sort | internal resistance variances in lithium ion batteries and implications in manufacturing |
| topic | Mechanical Engineering. |
| url | http://hdl.handle.net/1721.1/74917 |
| work_keys_str_mv | AT gogoanaradu internalresistancevariancesinlithiumionbatteriesandimplicationsinmanufacturing |