Battery & Electrification Technology - May/June 2024 - 15

losing some of its advantage in this category
(Table 2).
For high-cycle-rate applications, start by
exploring angle seat valves for pneumatic
actuation and solenoid valves for electric
actuation. These have the highest lifecycle
ratings, while ball and butterfly valves have
the lowest. In applications where the valve
may only open a few times per day, the
number of life cycles are less of priority, and
ball and butterfly valves can still be a good
choice. Angle seat valves are ideal for controlling
the flow of electrolyte into the
battery during filling.
When size or weight is an issue - skid
applications, for example - angle seat
and solenoid valves offer an advantage
for automated solutions due to their
compact nature with integrated actuating
mechanisms.
The design and internal actuation
make the angle seat the best selection
for fast open and close rates such as filling
applications.
After determining the type of valve
body required, it is necessary to specify the
attributes the valve must have to satisfy
the operating conditions. These attributes
include type of construction, coating,
chemical resistance, pressure rating, diameter,
double or single acting, torque requirement,
and certificates. Several suppliers,
including Festo, offer online configuration
tools. These tools help size the selected
valve body type and identify all accessories
best suited to the application.
The engineer simply enters parameters,
and the software does the rest. What used
to take hours to specify the right valve and
then search, sometimes on multiple vendor
sites for accessories, now is streamlined
thanks to online configuration tools.
The Circular Battery Economy
Recovery of valuable elements within the
EV battery is essential for the health and
viability of the industry. In recycling used EV
batteries, controls valves are required.
Concept
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15
Control valves automate the extraction
of precious materials from a
slurry of shredded EV batteries in a
batch process. The valves introduce various
acids to the shredded batteries held
in a process vessel. The acids precipitate
precious materials out of the solution
for ease of separation and collection.
Valuable materials available for recapture
and reuse in lithium-ion batteries
include cobalt, gold, lithium, manganese,
neodymium, nickel, palladium, platinum,
silver, and tantalum.
The process valves and control valves
for slurry mixing, electrolyte filling, and
battery recycling play crucial parts in the
circular battery economy.
This article was written by Jarod Garbe,
Industry Segment Manager - E-Mobility,
and Lawrence Lin, Business Development
Manager - E-Mobility, both at Festo
(Islandia, NY). For more information, visit
www.festo.com. 
http://www.festo.com http://info.hotims.com/86255-709
Battery & Electrification Technology - May/June 2024

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