hpt 2022 #4

special automation
Automated assembly of high-voltage battery systems for e-mobility
process reliability of the joining, screwing and dosing assembly processes
as well as on the material flow and material supply to the assembly equipment.
Liebherr tests the automation of these processes in advance as a simulation
on a “digital twin” and then demonstrates the process capability on a
facility test equipment.
Here tests are run on the detection, positional dependency and modular
assembly, module connectors and the cover of the battery housing in order
to screw them in place with positional accuracy. Another focus is on the dispensing
of one- and two-component adhesives and sealants as well as heatconducting
pastes, including process monitoring during dispensing bead
detection using 3D vision systems. “This, in combination with robotics, is
a highly demanding process in e-mobility,” explains development engineer
Jan Pollmann. “We are working on process reliability to pave the way for
customers to automate.” Customers can also
use this system by request for tests on their
own battery packs, therefore benefiting from
the high-tech infrastructure in Kempten.
Innovative: automation of
flexible plug connections
A unique, innovative technology is being
tested at the system over the road – the automated
assembly of flexible high-voltage cables
with plug connections for battery modules.
Two synchronously operating robots with a
patented combination gripper join the plug
connections in a precise position with the
aid of cameras. Interest in these connectors
is growing in the industry because, unlike
conventional rigid module connectors, they
are easier to assemble, safer due to their electrical
insulation and more robust in use. This
results in additional application possibilities
for the automation of plug-in cables in battery
packs, which are developed and tested individually
for each customer.
Win-win situation
The Tech Center represents Liebherr’s innovation
potential in automation. Customers
benefit from the extensive expertise of
experts, who respond to individual requests,
test products and processes in the test facilities.
“Liebherr has therefore created a winwin
situation for both sides,” says Thomas
Mattern, summarizing the benefits.
Robot cells for bin picking
further information: www.liebherr.com
no. 4, November 2022
49