Truck & Off-Highway Engineering - December 2021 - 6

TECHNICAL INNOVATIONS
Wireless battery management
coming
The ability to perform defect-free battery
pack assembly is vitally important. " Even
something like a low-voltage wiring harness,
if installed incorrectly, can create an
internal short on the pack. So, it's really
important to do it right, " Warner said. The
passenger-vehicle market recently saw
the unwanted aftereffects of batterymodule
manufacturing defects that led to
the recall of Chevrolet Bolt EVs and EUVs
(General Motors will receive up to $1.9
billion from LG Electronics for costs associated
with the recalls).
The testing and validation of ABS
battery packs includes time in an environmental
chamber. ABS has three, 10x
8- x 4-ft (3- x 2.4- x 1.2-m) chambers
with temperature capability from -40 to
+85°C (-40 to +185°F). One chamber
also has humidity capability, and the
new cyclers added to one of the chambers
means power capability to test up
to a 1,200-volt system. " I've always said
that it's not the cells that keep a system
safe; it's the system that keeps the cells
safe. So, the entire battery pack, the
battery management system (BMS), the
thermal system, and the mechanical
" It's very important that we have the
knowledge to design, build and deliver
complete energy-storage solutions for
electrified vehicles, " said ABS's Subhash Dhar.
" We're not doing battery cell development, but
we understand the development roadmap, "
said ABS's John Warner.
Close-up view of one
of the environmental
chambers.
structure are all there to protect the
battery system, " Warner said.
A hardware-in-the-loop BMS lab is
An overhead view shows the high-voltage
prototype line at ABS's innovation center,
recently expanded from 40,000 to 115,000 sq.ft.
6 December 2021
tied to future product. " We're in the
process of developing a wireless BMS,
which will launch in the next 18
months, " Warner said. ABS's wireless
BMS will enable battery cells to be
tracked from the assembly point to end
of life. Current technology involves a
control board and a wiring harness.
" Low-voltage wiring harnesses can be
gangly, difficult to install, and the connectors
can be prone to faults/failures.
With the wireless BMS, we'll use a small
antenna that's only 2 to 3 mm (0.08 to
0.12 in.) from the board for communications, "
said Warner, projecting cost savings
of 20-25%.
ABS's energy-storage solutions are
downstream from the battery cells. " We
don't care what the chemistry of the cell
is. We're able to adapt, whether it's lithium-ion,
liquid electrolyte chemistry, solid-state
or some other cell type, " Dhar
said. ABS provides off-the-shelf products
as well as engineered energy-storage
solutions to meet customers' specific
needs. In addition to commercial
vehicles, ABS customers include providers
of industrial equipment, industrial
vehicles and niche EVs. " We're serving
the underserved market, " Dhar said.
Kami Buchholz
TRUCK & OFF-HIGHWAY ENGINEERING
ALL IMAGES: ABS

Truck & Off-Highway Engineering - December 2021

Table of Contents for the Digital Edition of Truck & Off-Highway Engineering - December 2021

Truck & Off-Highway Engineering - December 2021 - CVR4
Truck & Off-Highway Engineering - December 2021 - CVRA
Truck & Off-Highway Engineering - December 2021 - CVRB
Truck & Off-Highway Engineering - December 2021 - CVR1
Truck & Off-Highway Engineering - December 2021 - CVR2
Truck & Off-Highway Engineering - December 2021 - 1
Truck & Off-Highway Engineering - December 2021 - 2
Truck & Off-Highway Engineering - December 2021 - 3
Truck & Off-Highway Engineering - December 2021 - 4
Truck & Off-Highway Engineering - December 2021 - 5
Truck & Off-Highway Engineering - December 2021 - 6
Truck & Off-Highway Engineering - December 2021 - 7
Truck & Off-Highway Engineering - December 2021 - 8
Truck & Off-Highway Engineering - December 2021 - 9
Truck & Off-Highway Engineering - December 2021 - 10
Truck & Off-Highway Engineering - December 2021 - 11
Truck & Off-Highway Engineering - December 2021 - 12
Truck & Off-Highway Engineering - December 2021 - 13
Truck & Off-Highway Engineering - December 2021 - 14
Truck & Off-Highway Engineering - December 2021 - 15
Truck & Off-Highway Engineering - December 2021 - 16
Truck & Off-Highway Engineering - December 2021 - 17
Truck & Off-Highway Engineering - December 2021 - 18
Truck & Off-Highway Engineering - December 2021 - 19
Truck & Off-Highway Engineering - December 2021 - 20
Truck & Off-Highway Engineering - December 2021 - 21
Truck & Off-Highway Engineering - December 2021 - 22
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Truck & Off-Highway Engineering - December 2021 - 24
Truck & Off-Highway Engineering - December 2021 - 25
Truck & Off-Highway Engineering - December 2021 - 26
Truck & Off-Highway Engineering - December 2021 - CVR3
Truck & Off-Highway Engineering - December 2021 - CVR4
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