Study of Electrical and Thermal Behaviour of Li-ion Polymer Cells for Auxiliary Power Supply in Underwater Applications

T.V.S.L. Satyavani; G. Satyanarayana Rao; A. Srinivas Kumar; K. Venkateswara Rao

doi:10.14429/dsj.62.995

T.V.S.L. Satyavani Naval Science and Technological Laboratory
G. Satyanarayana Rao Naval Science and Technological Laboratory
A. Srinivas Kumar Naval Science and Technological Laboratory
K. Venkateswara Rao Naval Science and Technological Laboratory

DOI: https://doi.org/10.14429/dsj.62.995

Keywords: Li-ion, volumetric and geometric energy densities, self discharge.

Abstract

Lithium ion polymer (Li-Po) battery technology is the latest technology for portable use and the most promising technology for exercise torpedoes. These batteries are technologically evolved from Lithium ion batteries. In this paper, extensive experimental studies on Li-Po cells which include studies on electrical characteristics during charge-discharge cycles, discharge at different C rates, self discharge throughout charge stand, temperature profiles at the cathode and anode during the discharges, etc. are reported and discussed. The extensive electrical characterisation done on these cells indicates the capability of these cells for use as auxiliary power supply in underwater weapon applications.

Defence Science Journal, 2012, 62(2), pp.127-131, DOI:http://dx.doi.org/10.14429/dsj.62.995

Author Biographies

T.V.S.L. Satyavani, Naval Science and Technological Laboratory

Ms T.V.S.L. Satyavani received MSc from Central University of Hyderabad and presently pursuing PhD in Andhra University, Visakhapatnam on Lithium Ion batteries. She is currently working in Battery systems Division, Naval Science and Technological Laboratory (NSTL), Visakhapatnam as Scientist ‘E’. Her research interests include: High power and high energy density batteries.

G. Satyanarayana Rao, Naval Science and Technological Laboratory

Mr G. Satyanarayana Rao did his Diploma in Electrical Engineering from Government Polytechnic, Visakhapatnam. Currently working in Battery systems Division, Naval Science and Technological Laboratory (NSTL), Visakhapatnam. He worked on aviation, motor transport and underwater batteries for 40 years.

A. Srinivas Kumar, Naval Science and Technological Laboratory

Dr A. Srinivas Kumar obtained his PhD (Chemical Engineering) from College of Engineering (A), Andhra University, Visakhapatnam. He is currently working as Scientist ‘F’ at NSTL, Visakhapatnam. His fields of specialisation are : High explosives and high energy batteries.

K. Venkateswara Rao, Naval Science and Technological Laboratory

Dr K. Venkateswara Rao obtained his PhD from IIT, Kharagpur in 1980. Presently working as Scientist-G, Head, Battery Systems Division, NSTL, Visakhapatnam. He has developed various advanced battery systems for different underwater weapons and systems. He has published several papers in this field. He has received DRDO Scientist of the Year Award in 2010 for his contributions.