Real-Time Estimation of Temperature Distribution for Cylindrical Lithium-Ion Batteries Under Boundary Cooling

2017 ◽  
Vol 64 (3) ◽  
pp. 2316-2324 ◽  
Author(s):  
Mingliang Wang ◽  
Han-Xiong Li
Keyword(s):  
Temperature Distribution ◽  
Lithium Ion Batteries ◽  
Real Time ◽  
Lithium Ion ◽  
Time Estimation ◽  
Real Time Estimation

Real-Time Estimation of Lithium-Ion Concentration in Both Electrodes of a Lithium-Ion Battery Cell Utilizing Electrochemical–Thermal Coupling

2017 ◽  
Vol 139 (3) ◽  
Author(s):  
Satadru Dey ◽  
Beshah Ayalew
Keyword(s):  
Real Time ◽  
Unscented Kalman Filter ◽  
Lithium Ion ◽  
Time Estimation ◽  
Li Ion Battery ◽  
Battery Cell ◽  
Thermal Dynamics ◽  
Estimation Scheme ◽  
Real Time Estimation ◽  
Li Ion

This paper proposes and demonstrates an estimation scheme for Li-ion concentrations in both electrodes of a Li-ion battery cell. The well-known observability deficiencies in the two-electrode electrochemical models of Li-ion battery cells are first overcome by extending them with a thermal evolution model. Essentially, coupling of electrochemical–thermal dynamics emerging from the fact that the lithium concentrations contribute to the entropic heat generation is utilized to overcome the observability issue. Then, an estimation scheme comprised of a cascade of a sliding-mode observer and an unscented Kalman filter (UKF) is constructed that exploits the resulting structure of the coupled model. The approach gives new real-time estimation capabilities for two often-sought pieces of information about a battery cell: (1) estimation of cell-capacity and (2) tracking the capacity loss due to degradation mechanisms such as lithium plating. These capabilities are possible since the two-electrode model needs not be reduced further to a single-electrode model by adding Li conservation assumptions, which do not hold with long-term operation. Simulation studies are included for the validation of the proposed scheme. Effect of measurement noise and parametric uncertainties is also included in the simulation results to evaluate the performance of the proposed scheme.

scholarly journals Real-Time Estimation of Ball-Screw Thermal Elongation Based upon Temperature Distribution of Ball-Screw

2004 ◽  
Vol 47 (4) ◽  
pp. 1175-1181 ◽  
Author(s):  
Takehiko KODERA ◽  
Kazuhiro YOKOYAMA ◽  
Kazuo MIYAGUCHI ◽  
Yutaka NAGAI ◽  
Takamasa SUZUKI ◽  
...  
Keyword(s):  
Temperature Distribution ◽  
Real Time ◽  
Time Estimation ◽  
Ball Screw ◽  
Real Time Estimation
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