Aluminum foil energy storage welding

What is ultrasonic and laser welding of multi-layer thin foils?

Welding multi-layered thin foils, especially those only a few micrometers thick, is vital to ensure optimal performance and safety. The predominant techniques for this are ultrasonic and laser welding. This paper aims to provide a comprehensive review of contemporary advancements in ultrasonic and laser welding of multi-layer thin foils.

Which aluminum foil thickness is best for energy conversion?

To maximize energy conversion efficiency, different aluminum foil thicknesses correspond to specific optimal energy input ranges: 0.051 mm aluminum foil is most effective with an energy input of less than 4 kJ, 0.076 mm aluminum foil performs optimally with 4–6 kJ, and 0.127 mm aluminum foil is suitable for 6–12 kJ;

What is the tensile strength of welded foil?

Those welded samples have very smooth weld bead with no intermittent bead and little distortion. The measured tensile strength of the welded foil ranges from 2.5N to 25N depending on foil thickness.

What is the energy ratio of aluminum foil?

The instantaneous vaporization energy (\ (E_d\)) of the 0.127 mm aluminum foil accounts for 90% of the total energy. The energy driving the flyer workpiece increases to a certain level and then ceases to increase, while the energy ratio of the instantaneous vaporization energy (\ (E_d\)) of the aluminum foil decreases.

How much vaporization energy does aluminum foil use?

The instantaneous vaporization energy (\ (E_d\)) accounts for 78% of the total energy. The instantaneous vaporization energy (\ (E_d\)) of the 0.127 mm aluminum foil accounts for 90% of the total energy.

Which aluminum foil is best for achieving maximum impact velocity?

The thickness of the aluminum foil plays a crucial role in influencing the conversion efficiency at varying energy densities. A comparison of the results presented in Figs. 6 and 8 indicates that for achieving maximum impact velocity, a 0.051 mm aluminum foil is optimal when the energy input is below 3 kJ.