UK-developed Porsche Taycan rival to get ultra-stiff platform and new battery tech
OPEN GALLERY
The upcoming
Polestar 5 electric sports saloon will get “supercar levels” of body
stiffness from an all-new platform being developed at a new engineering
base in Warwickshire.
The 5 is the first Polestar car to be developed in the UK, as well
as the first “developed by Polestar for Polestar”, rather than derived
from a Volvo base, according to vehicle
engineering director Steve Swift.
The 5’s body is constructed chiefly from bonded aluminium, with other
sections made from hot-formed, cold-formed, die-cast and extruded aluminium.
It’s this bonded aluminium construction that affords the car “supercar
levels of torsional stiffness, which is fundamental to class-leading ride and
handling dynamics”, said Polestar UK chief engineer Dave Kane.
UK R&D boss Pete Allen added that a goal for the 5 is to “deliver
best-in-class levels of dynamics, and that starts with the structure”. To
that end, the 5’s body offers “carbonfibre levels of torsional stiffness,
like a two-door sports model”.
Discussions are under way to establish exactly how to tune the 5’s stiff
underpinnings to give it its dynamic character. “It’s still to be
confirmed where it sits,” said Swift. “We’re looking for sophistication,
rather than to take a Volvo and make it handle [like a Polestar].
“If you have a vehicle that rides well and is relatively isolated from
road noise and then you get the handling right, you will appeal to those
who love driving and also those who just like driving the car without
articulating it.”
The Porsche Taycan is an obvious rival to the 5,
and Polestar is understood to have one at its MIRA facility for
benchmarking purposes. However, the Chinese-Swedish manufacturer wants to
create a car with more everyday compliance and a rounded edge, rather than
chasing truly sports car-like handling.
“It needs to be engaging but also comfortable,” said Swift. “We can
push the car in a dynamic direction or a comfort direction without totally
sacrificing one or the other.”
Further developments include motorsport-derived underbody
aerodynamics and a slippery body shape. Polestar isn’t yet
discussing the powertrain and battery details of the 5 – prototype testing
of which is already under way in the UK and in the Arctic Circle – but
performance levels are expected to be prodigious given its range-topping position
in the Polestar line-up. However, Swift disclosed that there’s some
“interesting IP [intellectual property]” in the battery technology.
Polestar engineers have managed to maintain the look of the Precept
concept car through to production.
Allen said they look “pretty much identical”, adding: “We use our
ability to deliver cars as close as we possibly can to [Polestar CEO and
designer] Thomas Ingenlath’s designs inside and out.”
To that end, the large panoramic roof remains, as do the long
wheelbase and low roof height.
“It’s an extremely low car [for an electric car],” said Allen. “Not as
low as an internal combustion engine car but close, and they don’t have
batteries underneath. That has been a particular challenge.”
Much of the engineering work on the 5 is being done with future Polestar
products in mind.
There’s “a lot of scalability” in the new platform, said Swift. “You
start with a car first, then look at the products in other spaces, then how
many of those spaces we can play in while designing it once. It’s part of the future, definitely.”
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