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Electrical and Thermal Characteristics of Lithium-Ion Cells (1999)

Rao, Gopalakrishna ; Vaidyanathan, Hari

In: CASI

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Publication Date: 2019-07-27

Description: The 18650 type lithium ion cells are characterized by a cell resistance of 130 m Omega, capacity of 1.27 Ah at 25C, and a mid-discharge voltage of 3.6 V. The capacity loss in the 72-hour stand test was 3.39 percent. The heat dissipation properties were determined by a radiative calorimeter. During charge, initial endothermic cooling and subsequent exothermic cooling beyond 55 percent state-of-charge were observed. At C/2 rate of discharge (which is considered medium rate), the heat dissipated was 17 mW/cc. The heat dissipation profile during discharge is also unique in the presence of a minimum that is different from that observed for Ni-Cd, Ni-MH, and Ni-H2 cells.

Keywords: Electronics and Electrical Engineering

Type: Applications and Advances; 12-15, Jan. 1999; Long Beach, CA; United States

Format: application/pdf

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