Online cellphone battery entropy measurement for SoH estimation

Autor: Olfa Kanoun, A. Cuadras, Florian Meinert, Paul Büschel
Přispěvatelé: Universitat Politècnica de Catalunya. Departament d'Enginyeria Electrònica, Universitat Politècnica de Catalunya. GRUP ISI - Grup d'Instrumentació, Sensors i Interfícies
Jazyk: angličtina
Rok vydání: 2016
Předmět:
Engineering
State of health
Entropy
Real-time operation
Battery
02 engineering and technology
Generation rate
Cellular telephones
Renewable energy sources
Telephone sets
Battery operation
Hardware_GENERAL
Battery voltage
0202 electrical engineering
electronic engineering
information engineering
Bateries -- Carregadors
Entropy (energy dispersal)
business.industry
Open-circuit voltage
Energy dissipation
020208 electrical & electronic engineering
Electrical engineering
Irreversible energy
Secondary batteries
Dissipation
Enginyeria de la telecomunicació [Àrees temàtiques de la UPC]
021001 nanoscience & nanotechnology
Entropy measurement
Electric batteries
Wear of materials
Damage
Aging of materials
Telèfon mòbil
Entropy generation rate
Energies renovables
0210 nano-technology
business
Voltage
Zdroj: UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
Recercat. Dipósit de la Recerca de Catalunya
instname
SSD
Popis: The widespread use of batteries requires knowledge of their state of health (SoH). In this paper we present a method to use entropy evolution as an aging indicator for batteries. Voltage, current and temperature are monitored in battery cells used in cellphones and in real-time operation. Irreversible entropy is estimated from irreversible energy dissipation in the battery for long periods of use. Simple open circuit battery voltage Uocv models were evaluated and compared to lab measured Uocv. It was found that the entropy generation rate is always increasing during battery operation and that irreversible entropy is a fingerprint of aging for batteries. © 2016 IEEE.
Databáze: OpenAIRE
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