Truck & Off-Highway Engineering - December 2024 - 3

TECHNICAL
INNOVATIONS
SAE INTERNATIONAL
BOARD OF DIRECTORS
Carla Bailo
President
Robert Ireland
2025 President
Todd Zarfos
2023 President
Christopher Payne
Vice President - Aerospace
Daniel Nicholson
Vice President - Automotive
Audley Brown
Vice President -
Commercial Vehicle
David Andrea
Treasurer
Gregory L. Bradley, Esq.
Secretary
Judy Curran
Mary Lee Gambone
Joan Wills
Susan Ying, Ph.D
ELECTRIFICATION
CATL expands battery range for heavy-duty trucks
and buses
The TECTRANS - T battery system for heavy-duty trucks comes in two versions: one for " superfast charging " and
another for longer life.
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Chinese battery manufacturer CATL
(Contemporary Amperex Technology Co. Ltd.)
completed the launch of its TECTRANS battery
system for the commercial transport sector at
IAA Transportation, which took place in
September in Hanover, Germany. CATL added
its heavy-duty truck and bus/coach battery
ranges to the light-truck range that the company
launched in China in July 2024.
For heavy-duty trucks, CATL offers two alternatives:
the TECTRANS - T Superfast
Charging Edition and the TECTRANS - T Long
Life Edition. As the name suggests, the
Superfast Charging Edition is designed to offer
rapid charging capability for operators needing
to recharge during a duty cycle. CATL quotes a
4C peak charging rate, which would permit a
charge to 70% in 15 minutes.
The Long Life Edition is designed for an operating
life of up to 15 years or 1.74 million
miles (2.8 million km). Both variants are designed
to offer an operating range of 310 miles
(500 km) for all truck operations from short
haul to long distance.
TRUCK & OFF-HIGHWAY ENGINEERING
For bus and coach operations, CATL has
launched the CATL TECTRANS - Bus Edition.
CATL claims an energy density of 175 Wh/kg,
said to be the highest for LFP (lithium iron
phosphate) chemistry used in bus applications.
CATL claims that the battery thermal management
system in the T Superfast Charging
Edition can reduce internal temperature disparity
by 50%. The company credits this to the design
of the flow channel system, which achieves
precise control over various thermal zones.
For the bus and coach battery, CATL uses a
high-energy, high-press density cathode design,
which the company says significantly improves
energy density. A U-shaped seal and zero-draft
angle are said to bring a 22% increase in volumetric
energy density compared with the previous
generation. Other features of the bus and
coach battery include an electrolyte that features
an additive molecular design and precise film
forming capability, which results in highly stable
interfaces, significantly improving cell service life.
The long service life of the heavy-truck batteries
is the result of various features. One is a
December 2024 3
CATL

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Truck & Off-Highway Engineering - December 2024

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