Truck & Off-Highway Engineering - October 2024 - 25

ORIGINAL EQUIPMENT
" There are jobs today that are still better suited for diesel, but there are a growing
number of projects where electric-power machines are the best tool for the job. "
- Terry Dolan, Case Construction Equipment
" There are jobs today that are still
better suited for diesel, but there are a
growing number of projects where
electric-power machines are the best
tool for the job, " Terry Dolan, vice president,
North America, Case Construction
Equipment, said during the 580EV virtual
event. Beyond jobsites in urban
centers with strict noise and emission
mandates, nighttime projects, or work
that requires indoor operation, EVs also
" could open doors to winning contracts
on projects that prioritize green credentials, "
he said. " For example, the number
of LEED-certified projects between
2017 and 2022 grew at an average rate
of 20% every year. "
Runtime range
Powered by a 400-volt, 71-kWh lithiumion
battery platform that can be
charged with Level 2 J1772 adapters,
the new electric backhoe loader is designed
to deliver up to eight hours of
operational runtime on a single charge.
" When looking at runtime, we say four
to eight hours of true operation depending
on the application, " Stemper
said. " That's a pretty big range because
a useful machine like a backhoe loader
can do a lot of different tasks with a lot
of different energy demands. "
Customer testing provided insights
on how much battery charge was used
in specific types of operations. " For
example, running the backhoe is a
more efficient use of energy on the
machine. If you're digging with stabilizers
down most of the day, you'll see
runtimes that are closer to that eighthour
range, " Stemper explained.
" Running the ground drive consumes
more energy though. If an operator is
using the transmission heavily for
roading or moving material with the
front loader, they're more likely to see
shorter runtimes. "
The battery platform also uses an
advanced, multi-circuit thermal manTRUCK
& OFF-HIGHWAY ENGINEERING
The 580EV uses two independent electric motors - a traction motor and an implement motor -
to minimize energy consumption and improve performance in loading applications.
agement system. " We looked closely at
thermal management on these machines
by using separate cooling circuits
for different systems to better regulate
temperatures for various climate
conditions, " Stemper said.
The 580EV utilizes a nickel manganese
cobalt (NMC) lithium-ion battery
supplied by FPT Industrial. A fully depleted
battery can be charged to 100%
overnight in about seven and a half
hours. Charging from 20% to 80% will
take around four and a half hours.
EH controls an 'obvious' update
The four-wheel-drive 580EV uses two
independent electric motors to minimize
energy consumption and improve
performance in loading applications. A
traction motor is connected through the
PowerDrive transmission to the drivetrain,
and an implement motor connects
to the hydraulic pumps that feed the
loader, backhoe and steering systems.
" In loading applications, the loader
hydraulics are controlled separately
from the ground drive, maintaining the
operator's ability to load materials from
a pile without declutching and maintaining
fast cycle times, " Stemper said.
The 14-ft (4.27-m) backhoe includes
an Extendahoe to provide extra reach,
minimizing the need to reposition the
machine. The maximum digging depth
when extended is 17 ft, 11 in (5.47 m).
Overall reach from the rear axle centerline
is 25 ft, 3 in (7.69 m) when extended.
Other features include ProControl
swing dampening, PowerLift/
PowerBoost and new electrohydraulic
(EH) controls to increase control precision.
The loader uses a three-spool EH
control valve and the backhoe an
eight-spool EH unit. Flow is up to 30
gpm (113 L/min) for both loader and
backhoe. The backhoe-bucket digging
force with PowerLift is 14,452 lb
(64,285 N). The loader-bucket breakout
force is 10,946 lb (48,690 N).
" We were heavily engaged with
those customers [in the Northeast] for
a few years, hearing firsthand from the
October 2024 25
CASE CONSTRUCTION

Truck & Off-Highway Engineering - October 2024

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