Joining Technologies for Automotive Lithium-Ion Battery Manufacturing: A Review

Lee, S. Shawn; Kim, Tae Hyong; Hu, S. Jack; Cai, Wayne; Abell, Jeffrey A.

doi:10.1115/msec2010-34168

Cited by 145 publications

(95 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Therefore, various applications require the joining of dissimilar joints without deteriorating the electrical and mechanical properties at the interface. In solid state welding, the fabrication of dissimilar joints between aluminium and copper has been the subject of various investigations [1][2][3]. In order to ensure good electrical properties of the dissimilar joints, the objective of available welding technologies is to obtain a high bond strength combined with maximum contact area.…”

Section: Introductionmentioning

confidence: 99%

Influence of Pin Length and Electrochemical Platings on the Mechanical Strength and Macroscopic Defect Formation in Stationary Shoulder Friction Stir Welding of Aluminium to Copper

Regensburg

Schürer

Weigl³

et al. 2018

Metals

View full text Add to dashboard Cite

Abstract:The fabrication of dissimilar joints for electrical applications raises challenges for conventional joining technologies. Within solid-state processes, friction stir welding (FSW) provides numerous advantages to realize different joint configurations. However, depending on the intermixing of the materials, defects like hooking and significant intermetallic compound formation around copper fragments are observed and lead to a decrease in joint properties. Therefore, stationary shoulder FSW was applied to produce 2 mm EN AW1050/CW024A lap joints with minimized intermixing at the interface. Compared to conventional FSW, the range of the friction-based heat input can be increased without risking excessive plastification under the tool shoulder. The influence of the pin length on the interfacial structure as well as the mechanical properties were investigated. A pin length of 2.2 mm and hence a plunging of approximately 0.2 mm into the lower copper sheet was found to obtain the highest failure load. A further increase caused the formation of hooking defects, which led to void formation at the interface and failure within the area of the thinned aluminium sheet. The results were also transferred to lap joints with a tin and silver interlayer of 10 µm and also showed good results in terms of bond strength and contact area.

show abstract

Section: Introductionmentioning

confidence: 99%

Influence of Pin Length and Electrochemical Platings on the Mechanical Strength and Macroscopic Defect Formation in Stationary Shoulder Friction Stir Welding of Aluminium to Copper

Regensburg

Schürer

Weigl³

et al. 2018

Metals

View full text Add to dashboard Cite

show abstract

“…Three cell shapes have immerged and taken on market predominance. These are pouch cells, cylindrical cells, and prismatic hard-case cells [31,32]. As more studies are being conducted on cell designs, and the trend emerging indicates pouch as the appropriate cell design for automotive applications.…”

Section: Methodsmentioning

confidence: 99%

Laser ablation of electrodes for Li-ion battery remanufacturing

Ramoni

Zhang

et al. 2016

Int J Adv Manuf Technol

View full text Add to dashboard Cite

Formation of solid electrolyte interface (SEI) on the electric vehicle (EV) battery electrodes has been indicated as major cause of capacity deterioration in the electric vehicle battery. This paper describes process for the removal of SEI deposited on the EV battery electrodes during continuous cycling. Laser fluence ranging from 0.308 to 2.720 J/cm 2 was used to irradiate surfaces of degraded battery electrodes to ablate SEI. Ablation of SEI from the surface of electrodes was done to enable recovery of electrodes for EV battery remanufacturing. Analytical tools including scanning electron microscope (SEM), atomic force microscopy (AFM), X-ray powder diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and electrochemical measurements are used to assess structural changes in the recovered electrodes and determine the functionalities. The analysis show promising results for the restoration of cyclability of recovered electrode to newlike condition.

show abstract

“…In general, there are three types of packages of lithium-ion batteries: cylindrical, pouch, and prismatic [35]. These have similar electrochemical principles and charge-discharge characteristics.…”

Section: Capacity Test and Ocv-soc Curve Test Of Lithium-ion Batterymentioning

confidence: 99%

A Novel Method for Lithium-Ion Battery Online Parameter Identification Based on Variable Forgetting Factor Recursive Least Squares

Lao

Xia

Wang³

et al. 2018

Energies

View full text Add to dashboard Cite

Abstract:For model-based state of charge (SOC) estimation methods, the battery model parameters change with temperature, SOC, and so forth, causing the estimation error to increase. Constantly updating model parameters during battery operation, also known as online parameter identification, can effectively solve this problem. In this paper, a lithium-ion battery is modeled using the Thevenin model. A variable forgetting factor (VFF) strategy is introduced to improve forgetting factor recursive least squares (FFRLS) to variable forgetting factor recursive least squares (VFF-RLS). A novel method based on VFF-RLS for the online identification of the Thevenin model is proposed. Experiments verified that VFF-RLS gives more stable online parameter identification results than FFRLS. Combined with an unscented Kalman filter (UKF) algorithm, a joint algorithm named VFF-RLS-UKF is proposed for SOC estimation. In a variable-temperature environment, a battery SOC estimation experiment was performed using the joint algorithm. The average error of the SOC estimation was as low as 0.595% in some experiments. Experiments showed that VFF-RLS can effectively track the changes in model parameters. The joint algorithm improved the SOC estimation accuracy compared to the method with the fixed forgetting factor.

show abstract

Joining Technologies for Automotive Lithium-Ion Battery Manufacturing: A Review

Cited by 145 publications

References 7 publications

Influence of Pin Length and Electrochemical Platings on the Mechanical Strength and Macroscopic Defect Formation in Stationary Shoulder Friction Stir Welding of Aluminium to Copper

Influence of Pin Length and Electrochemical Platings on the Mechanical Strength and Macroscopic Defect Formation in Stationary Shoulder Friction Stir Welding of Aluminium to Copper

Laser ablation of electrodes for Li-ion battery remanufacturing

A Novel Method for Lithium-Ion Battery Online Parameter Identification Based on Variable Forgetting Factor Recursive Least Squares

Contact Info

Product

Resources

About