OPENTECHNICAL PUBLICATION
OT-2026-000000730

Ultrasonic horn, secondary battery, and method for manufacturing secondary battery

Published: 2026-09-15T19:03:18.780855Z
Permanent URL: https://opentechnical.org/p/OT-2026-000000730
Categories: Manufacturing & Assembly Equipment > Joining and Welding

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ABSTRACT

An ultrasonic horn reduces the likelihood of damaging a plurality of stacked
sheets of metal foil when the stacked sheets and a metal member are
ultrasonically bonded by applying ultrasonic vibration to the stacked sheets.
An ultrasonic horn is used for ultrasonically bonding a plurality of stacked
sheets of negative electrode foil and a negative electrode collector plate by
applying ultrasonic vibration to the stacked sheets of negative electrode
foil. The horn includes a horn body, a first protrusion having a first surface
that is a curved surface and protruding from an opposing surface of the horn
body facing the anvil toward the anvil, and a second protrusion provided at a
center of the first surface of the first protrusion and protruding toward the
anvil. The second protrusion includes an end surface that is a planar surface
and a second surface connecting the end surface and the first surface.

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OpenTechnical publication OT-2026-000000730
Published 2026-09-15T19:03:18.780855Z
https://opentechnical.org/p/OT-2026-000000730