Truck & Off-Highway Engineering - April 2022 - 6

TECHNICAL INNOVATIONS
ELECTRIFICATION
Purdue prototypes new
EV fast-charge cable
A new charging station cable designed
by a Purdue University research team
could enable an electric vehicle (EV) battery
to be recharged in under five minutes,
comparable to filling an average
passenger vehicle's fuel tank at a gas
CNH Industrial is pursuing a " plug-and-play " approach that allows technology partners to bolster
its tech stack and accelerate product delivery.
" When you think about
where our engineering
centers are located for our
iron, we're getting smarter
about putting our software
development teams right
next to them, " said chief
digital officer Parag Garg.
station. The patent-pending technology
" addresses a better thermal management
scheme for EV charging cables
based on the principles of sub-cooled
flow boiling. This would enable ultra-fast
charging of EVs by the safe passage of
much higher electrical currents through
the cable, " said V.S. Devahdhanush, a
Purdue University Ph.D. candidate and
research project team member.
The Purdue team's prototype charging
station cable is designed to dissipate
heat as electrical current flows through
the cable. In comparison to the cable
used by Tesla on its Supercharger V3 -
currently considered the fastest charger
in the U.S. market - the prototype cable
delivers 4.68 times the current, according
to Devahdhanush. The Tesla V3 supercharging
architecture supports peak
charging rates up to 250 kW per car.
To achieve a faster charge rate, a cable
product development of precision applications.
CNH Industrial has made
strides in infusing new talent by hiring
engineering and technology experts,
Garg said: " In 2021, we insourced five
times more tech talent compared to the
previous year. "
" We're starting to bring more [tech
talent] in-house, and we're diversifying
it, " he continued. " When you think about
where our engineering centers are located
for our iron, we're getting smarter
about putting our software development
teams right next to them. The type of
engineers [we're looking for include]
embedded-firmware engineers, electrical
engineers, hardware engineers, cloud
engineers, backend database, machine
learning, AI - it's everything. "
The ultimate goal of CNH Industrial's
strategy is to deliver a fully autonomous
6 April 2022
farming cycle, while increasingly extending
its expertise and enhanced capabilities
gained from the Ag business
to the Construction segment. The autonomous
journey is already underway
at CNH Industrial. Since 2020, it's been
commercializing Raven's Omni-Power
platform, an autonomous power platform
that interchanges farm implements
and allows the farmer to remotely
operate the unit from a tablet.
In 2021, the first Auto-Cart commercial
sales began, and customer testing of
Auto-Tillage commenced. Auto-Spread
and Auto-Spray will begin customer
testing on sprayer platforms this year.
" We have all the ingredients and all the
tools necessary to be leaders in autonomy
and help our customers throughout
the entire farming cycle, " Garg said.
Ryan Gehm
needs to enable higher electrical current
flow. " We've been able to demonstrate
experimentally the safe, steady passage
of 2,438-amp current through a 0.25-in
wire, " Devahdhanush said, noting higher
values are theoretically possible. With a
10-foot long (3-m) cable containing two
high-direct current wires, equivalent to a
single 20-foot wire, 24.22 kW of heat is
removed via the cooler cable providing
2,438-A current.
Most of today's charging stations can
deliver current up to approximately 520
A. However, DC fast chargers typically
deliver less than 150 A. Charging times
vary from approximately 20 minutes to
several hours, depending on whether a
Level 1 (120 V), Level 2 (240 V) or Level
3 (DC fast-) charger is used. The main
influencers for charging times are the
EV battery's power input rating, the
power supply's output rating, and the
charging cable. A sub-five-minute
TRUCK & OFF-HIGHWAY ENGINEERING
BOTH IMAGES: CNH INDUSTRIAL

Truck & Off-Highway Engineering - April 2022

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