Automotive Engineering - March 2023 - 20

The push for
e-powertrain
PROGRESS
COVER STORY
eLeap says it overcame problems experienced by other companies'
attempts at inverter integration by splitting the battery, essentially
putting the inverter in the middle of the process.
Schaeffler's 4in1
eLeap
Power CEO
Russell Pullan
converter can also eliminate that hardware.
" Another one of the ways we're able to achieve a big
cost advantage is that we're using the motor in the
charging operation, " he said. " So inductors and transformers
that would normally be there aren't necessary. "
As for potential concerns about additional wear on
the motor, Pullan argued that " charging is motionless,
with no rotation of the motor and no vibration. "
Dooley acknowledged that others have tried this
technology but could not overcome problems. SAE
Media asked engineers at suppliers and OEMs about
eLeap's technology, and while most did not want to
comment for attribution, they did say, essentially, " if
they've figured that out, more power to them. "
Beginning with Chery will speak to another of the
benefits about which Pullan is enthusiastic. " If you're
20 March 2023
e-axle seeks to maximize
systemization by incorporating
the traction motor, transmission,
power electronics thermal-management,
which can include a heat pump.
a fleet-logistics company, there are savings per vehicle, " he said.
" We have savings on the OEM costs, but potential savings on infrastructure
also. If you have a DC grid in your depot, you don't need
any fast chargers. They're gone! That saves space. "
Pullan offered that among Chery's end users, one third of their
depot space is taken up by fast chargers. " In downtown Chicago or
Shenzhen China, that's [a big cost], " he emphasized.
Even the IP of eLeap's system is unique, containing more than 50
pieces. Pullan said the core IP, developed with the University of
Toronto Electric Vehicle Center, was granted by the U.S. Patent
Office with no questions because it is suis generis, a mixture of
software, hardware and system architecture not derived from any
existing patents.
- with reporting by Bill Visnic
AUTOMOTIVE ENGINEERING
CLOCKWISE FROM TOP: ELEAP POWER; SCHAEFFLER; J. KYLE KEENER

Automotive Engineering - March 2023

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