METHOD FOR ELECTRICALLY CONTACTING A BATTERY BLOCK

• Main Authors: BROEKELMANN, Michael, HESSE, Hans-Juergen, HUNSTIG, Matthias
• Format: Patent
• Language: English
• Published: 24.06.2021
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

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.