Patent · US Active

Methods of welding a bonding connector of a contact plate to a battery cell terminal

US11901531B2 · kind B2 · utility

0Cited by

1References

3Claims

0Family size

Assignee

AMERICAN BATTERY SOLUTIONS, INC. · US

Inventors

Heiner Fees · Bietigheim-Bissingen, DE
Andreas Track · Sachsenheim, DE
Alexander Eichhorn · Eppingen, DE
Ralf Maisch · Abstatt, DE
Jörg Damaske · Freiberg, DE
Martin Eberhard · Woodside, US

Key dates

Filing date	Jun 1, 2021
Grant date	Feb 13, 2024
Priority date	—
Expiry date	Oct 6, 2041

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/70
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

Embodiments are directed to establishing a direct electrical bond between a bonding connector of a contact plate and a battery cell in a battery module. In a first embodiment, an oscillating laser is used to weld the bonding connector to a battery cell terminal over a target area over which the bonding connector makes non-flush contact. In a second embodiment, the bonding connector is flattened to reduce a gap between the bonding connector and the target area on the battery cell terminal, and then laser-welded (e.g., using an oscillating or non-oscillating laser). In a third embodiment, at least one hold-down mechanism is applied over the bonding connector to secure the bonding connector to the battery cell terminal, after which the bonding connector is laser-welded to the battery cell terminal.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.