Romanian Journal of Information Science and Technology (ROMJIST)

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ROMJIST is a publication of Romanian Academy,
Section for Information Science and Technology

Editor – in – Chief:

Academician Dan Dascalu

Secretariate (office):
Adriana Apostol
Adress for correspondence: romjist@nano-link.net (after 1st of January, 2019)

Editing of the printed version: Mihaela Marian (Publishing House of the Romanian Academy, Bucharest)

Technical editor
of the on-line version:
Lucian Milea (University POLITEHNICA of Bucharest)

Sponsors:
• National Institute for R & D
in Microtechnologies
(IMT Bucharest), www.imt.ro
• Association for Generic
and Industrial Technologies (ASTEGI), www.astegi.ro

ROMJIST Volume 19, No. 4, 2016, pp. 310-320, Paper no. 539/2016
 

Octavian IONESCU, Octavian BUIU, Bogdan SERBAN, Gabriela IONESCU
Studies on the development of an inferential method for battery state of health assessment

ABSTRACT: The latest developments in electric car industry are strongly correlated with technological advance achieved in the production of reliable energy storage devices. Currently, the Lithium Ion batteries cells are the most promising source of energy; however, the production of reliable packs of batteries is still a big challenge due to high number of cells used in a battery pack and the unpredictable aging behavior of these cells. Although there are direct methods of measuring state of health of battery cells, these methods cannot be practically applied to the battery packs due to their complexity thus the only possibility is to develop a much simple, inferential method. This paper is presenting the results of experimental research and studies conducted for establishing an inferential method for battery cell state of heath assessment by monitoring the difference of temperatures measured outside- inside battery. The proposed method is to measure and calculate the difference of the two temperatures and to correlate this result with the current delivered and thus deducing the state of health of battery.

KEYWORDS: inferential method, temperature sensor, state of heath, lithium ionbattery, energy storage, battery pac

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