Hesse Gmbh

Matthias Hunstig

Michael Broekelmann

Hans-Juergen Hesse

Andreas Unger

Andreas Jochheim

Michael BRÖKELMANN

Hans-Jürgen Hesse

A method for operating an ultrasonic bonding apparatus, the ultrasonic bonding apparatus providing an ultrasonic transducer with a carrier, displaceable in a z direction, including an ultrasound generating device which is movable relative to the carrier and is held thereon, and including an ultrasonic tool which is excitable to ultrasonic vibrations by the ultrasound generating device.

Method for operating an ultrasonic connecting device

An ultrasonic tool including a first end face and a second end face opposite the first end face. A tool lateral surface connects the first and second end face. The ultrasonic tool is elongate in a longitudinal direction of the tool, wherein at least the first end face is designed as a connection contact surface that is arranged for pressing the ultrasonic tool against a connection component, wherein the ultrasonic tool has an end region having the connection contact surface, which end region extends from the connection contact surface in the longitudinal direction of the tool over 15 mm, but at most one third of a length of the ultrasonic tool, toward the opposite end face, and wherein a pocket-shaped and/or blind-hole-like recess having a recess lateral surface and having a recess floor facing the connection contact surface is formed at the tool lateral surface in the end region.

Ultrasonic tool and ultrasonic connection device therefor

A device for heating and determining the actual temperature of a bonding tool of an ultrasonic bonder, comprising the bending tool, which has a first end face, a second end face, a lateral surface, which connects the first end face to the second end face, and an absorption region, comprising a temperature measuring unit for determining an actual temperature of the bonding tool at a temperature measuring point, which is provided on the lateral surface of the bonding tool and preferably at a tip of the bonding tool, and comprising a laser generator, a laser beam being provided with the aid of the laser generator, and the laser beam striking the bonding tool in the absorption region, and the bonding tool being heated as a result of the absorption of the laser beam.

Device for heating and determining an actual temperature of a bonding tool of an ultrasonic bonding device

An ultrasonic bonding method for electrical contacting a plurality of battery cells of a battery block. A first connection point is produced in that a bonding tool is heated directly, and a first connection contact surface of a first battery cell and/or a connection conductor is/are heated locally and indirectly by a laser beam directed toward the bonding tool. The connection conductor is pressed against the first connection contact surface of the first battery cell. The bonding tool is excited to vibrate ultrasonically, the ultrasonic vibrations being transferred from the bonding tool to the connection conductor. A second connection point is produced in that the connection conductor is pressed against a second connection contact surface of a second battery cell of the battery block or a common connection contact of the battery block by the bonding tool and excited to vibrate ultrasonically.

Method for electrically contacting a battery block

An ultrasonic tool comprising a first end face and a second end face, which is opposite the first end face, as well as a tool cover surface connecting the first end face and the second end face, wherein the ultrasonic tool is elongated in a longitudinal direction of the tool, wherein at least the first end face is formed as a connecting contact surface, which is arranged for pressing the ultrasonic tool against a connecting component, and wherein the ultrasonic tool comprises an end region comprising the connecting contact surface, which extends from the connecting contact surface in the longitudinal direction of the tool over 15 mm, but at most extends one third of the length of the ultrasonic tool in the direction of the opposite end face, and wherein in the end region, a first partial surface of the tool cover surface is formed as a surface-structured absorption surface.

Ultrasonic tool and ultrasonic connection device herein

A device for establishing a bonding connection, with a bonding head mounted so as to rotate about an axis of rotation, and a transducer () mounted on the bonding head. The transducer () has a piezo actuator () for generating ultrasonic vibration, in particular a natural ultrasonic vibration. Electrodes are () provided on the piezo actuator () in such a way that the piezo actuator () can be excited by an electric field in a field direction () transverse to a polarization direction () of the piezo actuator, and as a result of the excitation and of the connection of the piezo actuator () to the fastening section () and to the tool holder (), the piezo actuator () carries out a shearing motion in a shearing plane () formed by the polarization direction () and by the field direction ().

Device for establishing a bonding connection and transducer therefor

A method for operating an ultrasonic wire bonder. The ultrasonic wire bonder has a bonding head with a bonding tool and with a transducer for exciting ultrasonic vibrations in the bonding tool and a controller () for the transducer (). In a first process phase I a bonding wire is bonded to a substrate. The bonding wire is pressed against the substrate with a bonding force via a tool tip of the bonding tool, and the bonding tool is then excited so as to undergo ultrasonic vibrations in order to produce a bond between the bonding wire and the substrate, the transducer () being excited so as to vibrate for a specified or variable bonding time. In a second process phase II, the actuation of the transducer () is changed and reverberations of the bonding tool are counteracted, the transducer () being operated in a damped manner.

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Paderborn, Germany

Matthias Hunstig