Used K&S Asterion EV

The K&S Asterion EV is an extended-format hybrid wedge bonder designed primarily for ultrasonic wedge bonding in applications involving large-sized workpieces and the interconnection of battery modules.

Core Specifications and Capabilities

A standout feature is its expansive bonding area of 300 mm × 860 mm—a large-format platform for this class of wedge bonder—which helps minimize the time required for loading, unloading, and indexing. The system supports a wide range of wire types, including aluminum wires (100–600 µm) and copper wires (100–500 µm), allowing a single platform to accommodate various interconnection material requirements. It utilizes a direct-drive XYZT motion architecture, offering an XY-axis resolution of 0.1 µm and a repeatability of ±3.0 µm (@ 3σ), while requiring minimal maintenance.

Process Characteristics

The bonding process is performed entirely at room temperature via ultrasonic friction welding, eliminating the need for external heating. The system includes an integrated non-destructive pull-test function, enabling 100% in-situ quality inspection during production. Additionally, it is equipped with Graphical Bonding Setup (GBS PR) for visual guidance during consumable changes, as well as a Bonding Process Monitor (BPM+) for real-time quality control and defect detection at individual bond points.

Typical Applications

Official documentation and industry reports highlight its primary use in the interconnection of cylindrical battery modules, such as those found in electric vehicle (EV) battery packs and energy storage systems.