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lithium-iron phosphate (LFP) chemistry – extended warranty.
an extremely popular choice for buses in “From CATL’s perspective, their business China – that feature a long cycle life and with each is about 50/50 in quantity,” said high thermal runaway stability up to 800°C. Mazaika. “They don’t have a reason to
CATL’s standard LFP cells are capable of push one chemistry or the other, so we can 4000 100% DoD (depth-of-discharge) 1C focus on the best chemistry match to the charge/1C discharge cycles and its super application. For the commercial vehicle
long life or “million-mile” technology is segment, they almost exclusively use LFP capable of 12,000 cycles, the company said. because they have doubled the cycle life The coulomb (symbolized as C) is a standard compared to the NMC cell. We can now unit of electric charge in the International get enough of the LFP cells into some
System of Units (SI).smaller vehicles to meet typical automobile  The company said its cell-to-pack (CTP) range requirements, such as with the Tesla technology, as compared to the traditional Model 3.”
method of placing cells in modules and
                STANDARD PACKS
can today achieve an energy density of 160 “CATL has a number of standard packs,
Wh/kg, the same as the Tesla Model 3 NCA and this is something that’s very different (nickel cobalt aluminum) battery pack. Tesla in the U.S. marketplace,” said Mazaika,
Inc. is now using CATL’s LFP batteries for “where if you go around to different
its Model 3 electric car sold in the Chinese battery manufacturers no two packs are
market due to their lower cost, said CSI, the same size and no two packs use the
which could be an early indicator that same connectors. In China, because they more LFP batteries will find their way into are building to such a high volume, they’ve passenger cars.gone through a standardization process. The company also offers nickel They have different packs like we have a

 A battery pack  from CATL and distributed by CSI in North America.

www.coulombsolutions.com

The CATL H01 batteries use LFP
chemistry for commercial
vehicle applications.

battery systems on the road, and because manganese cobalt (NMC) batteries for D cell for a flashlight or AA batteries for a
between CATL and CSI we have worked with commercial vehicle electrification, especially television remote. They offer C packs, G
so many different vehicle manufacturers, vehicles that have higher requirements for packs and H packs that are standard for
we’ve been able to make it so the interface volume efficiency and can accept the lower heavy commercial vehicles. We can mix
to the vehicle OEM is relatively simple. cycle life of the NMC products. With NMC, those into different packs for different
We can get these battery systems up and the company said engineers can put more voltage levels. It’s very easy to adapt them to
running in a prototype truck in a week, or energy in a smaller space which is important different applications.”
two at the most.”for passenger cars but is not as significant a CSI works with customers to help
 Much of the opportunity for consideration in larger commercial vehicles.integrate battery-electric systems into
customization centers around operator The commercial LFP battery systems vehicles and will partner with drive system
interface, and “those are easy settings come standard with a five-year warranty and manufacturers for motors and axles. It
we can put in to adapt to whatever our are available with an optional seven-year can supply a battery system and a battery
customer’s preferences are,” he said. “There
are unique situations. For instance, in the
transit bus industry they have a ‘get off the
railroad switch,’ so no matter the problem,
if that bus is stuck on the railroad and the
driver pushes the override switch, it needs to
go. We can set that up.”
 Compared to passenger vehicles,
the application requirements and work
conditions can be more complicated in
commercial vehicle electrification and
include a range of equipment such as city
buses, trucks and vans, as well as forklifts,
locomotives and construction equipment.
CATL’s battery solutions include

BECAUSE WE HAVE SO MANY OF THESE
  BATTERY SYSTEMS ON THE ROAD…WE’VE BEEN ABLE TO MAKE IT SO THE INTERFACE TO THE VEHICLE OEM IS RELATIVELY SIMPLE. WE CAN GET THESE
BATTERY SYSTEMS UP AND RUNNING IN A PROTOTYPE TRUCK IN A WEEK, OR TWO AT THE MOST.”

DAVID MAZAIKA, founder and CEO, Coulomb Solutions Inc.

REPRINTED FROM DIESEL PROGRESS

FEBRUARY 2020

BATTERIES

management system so that it interfaces
with a vehicle controller.
 “Another thing we’re working on is we’re
making our subsystems for the accessories
basically plug and play, so they won’t really
require any system oversight,” said Mazaika.
“They will either operate in the manner that
we at CSI believe is the most efficient way
for the accessories to operate, or if you’re
an integrator and you have the newest,
most fantastic algorithm to operate the
component, that will work, too. Our support
then is in terms of software integration and
making sure the system communicates better. We are very early in the timeline effectively.”for electric vehicles and batteries for
 For the future of CSI and the commercial electric vehicles, and there is going to be a electric vehicle in general, Mazaika said to continuous series of battery improvements stay tuned. “The technology is only getting even beyond the annual 5 to 10% that

The 2.5 kW dc-dc converter from CSI is CAN-controlled and liquid cooled.

is typical. We believe this will enable the
electrification of commercial vehicles in
North America very rapidly and CSI will
continue to be a leader in driving that
change.”

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REPRINTED FROM DIESEL PROGRESS

FEBRUARY 2020