Electric
Vertical
Takeoff
and
Landing
(eVTOL)
aircraft,
as
a
highly
promising
future
transportation
mode,
offers
new
possibilities
for
solving
traffic
congestion.
Its
unique
flight
mode
high
power
requirements
present
significant
challenges
battery
thermal
management
system
design.
Compared
to
electric
vehicles,
eVTOLs
have
totally
different
usage
scenarios
operating
conditions,
leading
the
fact
that
of
conventional
vehicles
is
not
applicable
eVTOLs.
This
paper
focuses
on
typical
eVTOL
designed
short-range
flights,
determining
specific
energy,
power,
discharge
rate
under
conditions.
Utilizing
curve
lithium-ion
batteries
this
study
investigates
heat
generation
individual
during
flight.
Based
this,
available
cooling
sources
are
analyzed,
identifying
passive
combining
flat
plate
pipe
ram
air.
further
explores
effects
environmental
temperatures,
air
inlet
mass
flow
rate,
fin
spacing
radiator
performance
system.
Finally,
cycle
61.5
Ah
battery,
with
environment
temperature
20°C,
can
be
controlled
within
38.46°C
difference
cooled
3.85°C
by
Even
at
an
extreme
40°C,
still
meet
standard.
Meanwhile,
comparing
from
multiple
dimensions,
solution
has
better
overall
than
traditional
liquid
solution,
which
provides
foundation
design
International Journal of Energy Research,
Год журнала:
2024,
Номер
2024, С. 1 - 23
Опубликована: Апрель 20, 2024
The
escalating
demand
for
electric
vehicles
and
lithium-ion
batteries
underscores
the
critical
need
diverse
battery
thermal
management
systems
(BTMSs)
to
ensure
optimal
performance.
Despite
this,
a
comprehensive
comparative
analysis
remains
absent.
This
study
seeks
assess
compare
hydraulic
performances
of
three
prominent
BTMSs:
fin
cooling,
intercell
PCM
cooling.
Simulation
models
were
meticulously
developed
experimentally
validated,
with
each
system’s
design
parameters
optimized
under
identical
volumes
equitable
comparisons.
In
context
fast-charging
conditions,
cooling
consistently
met
even
surpassed
desired
target
temperature,
reducing
maximum
temperature
30.6°C
an
increasing
flow
rate,
while
faced
challenges.
Effective
control
coolant
emerged
as
factor
achieving
potential
reduction
in
difference
by
4.3
K.
exhibiting
higher
power
consumption,
demonstrated
most
efficient
effect
during
fast
charging.
Considering
BTMS
weight,
exhibited
lowest
energy
density,
approximately
half
that
other
methods.
Addressing
precooling
preheating
conditions
high
low
temperatures,
method
proved
adept
at
meeting
requirements
minimal
consumption
significantly
shorter
durations.
Conversely,
practicality
using
temperatures
was
deemed
challenging.
