Measurement and Prediction of Decomposed Energy Efficiencies of Lithium Ion Batteries With Two Charge Models

UM > Faculty of Science and Technology > DEPARTMENT OF ELECTROMECHANICAL ENGINEERING

Status	已發表Published
	Measurement and Prediction of Decomposed Energy Efficiencies of Lithium Ion Batteries With Two Charge Models
	Huang, Y.H.; Su, Y.; Garg, A.
	2021-03-01
Source Publication	Journal of Electrochemical Energy Conversion and Storage
ISSN	2381-6872
Pages	030901-030901
Abstract	A new process decomposed calculation method is developed to compare the cycle based charge, discharge, net and overall energy efficiencies of lithium-ion batteries. Multi-cycle measurements for both constant current (CC) and constant current to constant voltage (CC-CV) charge models have been performed. Unlike most conventional efficiency calculation methods with one mean open circuit voltage (OCV) curve, two OCV curves are calculated separately for the charge and discharge processes. These two OCV curves help to clarify the intra-cycle charge, discharge, net and overall energy efficiencies. The relationships of efficiencies versus state of charge, state of quantity, and scaled stresses are demonstrated. Efficiency degradation patterns versus cycle numbers and scaled stresses are also illustrated with the artificial neural network (ANN) prediction method. The decaying ratios of the overall efficiencies are about 2% and 0.3% in the first 30 cycles, for CC and CC-CV, respectively. Hence, efficiencies of CC-CV model are more stable compared to the CC model, which are shown by both experimental and ANN prediction results.
Keyword	Artificial neural network prediction Degradation patterns Energy efficiencies Lithium-ion batteries
Language	英語English
The Source to Article	PB_Publication
PUB ID	58503
Document Type	Journal article
Collection	DEPARTMENT OF ELECTROMECHANICAL ENGINEERING
Corresponding Author	Su, Y.
Recommended Citation GB/T 7714	Huang, Y.H.,Su, Y.,Garg, A.. Measurement and Prediction of Decomposed Energy Efficiencies of Lithium Ion Batteries With Two Charge Models[J]. Journal of Electrochemical Energy Conversion and Storage, 2021, 030901-030901.
APA	Huang, Y.H.., Su, Y.., & Garg, A. (2021). Measurement and Prediction of Decomposed Energy Efficiencies of Lithium Ion Batteries With Two Charge Models. Journal of Electrochemical Energy Conversion and Storage, 030901-030901.
MLA	Huang, Y.H.,et al."Measurement and Prediction of Decomposed Energy Efficiencies of Lithium Ion Batteries With Two Charge Models".Journal of Electrochemical Energy Conversion and Storage (2021):030901-030901.

Files in This Item:
There are no files associated with this item.

If you have any objections to this item, please fill out the form below and the administrator will contact you as soon as possible.
Content:
Email：	*
Affiliation No.
Verification Code:	Refresh

Any comments and suggestions are welcomed.
Title:	*
Content:
Email：	*
Verification Code:	Refresh