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Sensitivity of power of lithium-ion batteries to temperature: A case study using cylindrical- and pouch-type cells

Title
Sensitivity of power of lithium-ion batteries to temperature: A case study using cylindrical- and pouch-type cells
Authors
Park, Sun HoPark, JoonamRyou, Myung-HyunLee, Yong Min
DGIST Authors
Park, Sun Ho; Park, Joonam; Ryou, Myung-Hyun; Lee, Yong Min
Issue Date
2020-07
Citation
Journal of Power Sources, 465, 228238
Type
Article
Article Type
Article
Author Keywords
Lithium-ion batteryPower measurementTemperatureHybrid pulse power characterizationD. C. internal resistance
Keywords
POLYETHYLENE SEPARATORSPERFORMANCE
ISSN
0378-7753
Abstract
Power measurement has become as important as capacity to ensure stable operating conditions for batteries at different temperatures, states of charge (SOCs), and states of health (SOHs). Unlike capacity, the power of a lithium-ion battery (LIB) is quite sensitive to temperature. However, there have been few systematic works on the measurement of power at different temperatures with various LIB types. Herein, the power of two types of LIB (cylindrical and pouch), which are normally used in traction applications, are measured at different temperatures (15, 25 and 35 °C) using the hybrid pulse power characterization (HPPC) method. When LIB reaches to each thermal equilibrium, the battery is discharged and charged for 10 s at a specific SOC by applying constant current. And then, power value could be obtained through calculating some simple equations. In normal operating conditions, capacity change little (~0.47% per °C) regardless of temperature change, but power increase by about 3% per °C. Considering that each cell type has a totally different cell configuration, the similarity of this trend between LIB types is quite noticeable. Consequently, when measuring the power of LIB, the temperature must be controlled precisely, or at least calibrated if temperature differences are observed. © 2020 Elsevier B.V.
URI
http://hdl.handle.net/20.500.11750/12045
DOI
10.1016/j.jpowsour.2020.228238
Publisher
Elsevier BV
Related Researcher
  • Author Lee, Yong Min Battery Materials & Systems LAB
  • Research Interests Battery; Electrode; Electrolyte; Separator; Simulation
Files:
There are no files associated with this item.
Collection:
Department of Energy Science and EngineeringBattery Materials & Systems LAB1. Journal Articles


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