Charged EVs | Improve battery production with Nordson Sealant Equipment Solutions


Sponsored by Nordson Sealant Equipment

Customers rely on Nordson to deliver improvements, efficiencies and solutions for a wide range of dispensing applications in their battery manufacturing processes. Nordson Sealant Equipment provides an industry-leading, field-proven range of automated dispensing solutions for one- and two-part materials used in battery cell bonding, battery cell power distribution and battery pack assembly.

Battery Cell Bonding

Overview: Battery cells are manufactured in many sizes to fit the end product,
the most being cylindrical, prismatic and pouch styles. While the use of a
specific cell shape is dependent on the battery pack design, dispensing methods
for securing the cells into larger battery modules share common challenges.

The Nordson
Module integration of cylindrical
battery cells are often challenged by production speed and location accuracy; with
the application and material knowledge, coupled with extensive robotic
automation experience, Nordson designs engineered solutions that provide the
correct number of dispense heads at the flow rate and robotic speed necessary
for the application needs.

Square battery
cells often experience air becoming wrapped around, or caught under, battery
cells during a fill or pour. Nordson’s programmable dispense speeds allow for
mid-shot adjustments in material flow rate, which allow air to escape from the
fill. Speed can be adjusted back to full speed once the material is past the
point of concern, allowing necessary production speeds to be achieved.

Cell Power Distribution

Overview: Applying the exact bead size can be challenging; for long bead requirements of various patterns, the length may exceed the volume of the meter and require reload, resulting in a gap or overlap in the bead.

The Nordson
Nordson specializes in bonding
thermal interface materials between the current circuit and the battery cell
module. Nordson uses continuous flow meters and can optimally size the meter to
ensure reloads are not necessary before the end of the bead. Intricate bead
paths can result in sharp turns where the robot slows down, causing the meter
to deposit too much material.
Nordson’s servo-driven meters
have an
auto-flow mode where the flow rate can be adjusted at the same time as the
robot, allowing for even material placement along the battery cell or module.

Pack Assembly

Overview: Ensuring a battery cell module provides enough power with the correct form and fit for the end product is no simple task. Typically, numerous modules are placed together to create a larger assembly of modules, also known as a pack. The shape of these packs varies greatly depending on the vehicle or the storage battery’s overall shape and are usually bonded together to reduce vibration problems or sealed to prevent corrosion issues due to moisture.

The Nordson
Battery packs are bonded in one
of two ways: bead bonding utilizes robotics to apply a precise amount of
material to the face of each module; flood methodology simplifies robotic needs
by applying material to the base of the entire battery pack to bond each module
in place. A large meter needs to be mounted near or directly to the robot for
both methods. Nordson’s
continuous flow meters
can be used for dispensing one-
or two-component epoxies. 

Battery modules
are sealed with a bead that encapsulates the battery pack module or by a bead
placed between a top and bottom cell module. Both sealing methods require
accurate bead placement to ensure assembly compression does not overflow into
battery cells or outside of the pack.
Nordson’s variety of nozzles
specifically designed for precise application in difficult-to-access channels
or locations.

Industry partnerships

Nordson Sealant Equipment works alongside adhesive manufacturers
and automation/robot suppliers to ensure their solution is uniquely
engineered to the customer’s application. Nordson’s volume displacement rod
metering technology permits dispensing thermal gels or other heavily filled
materials without packing out or wearing the equipment over time. Additionally,
a wide range of wetted components and seal offerings allows Nordson’s dispensing
equipment to be compatible with battery assembly materials across the globe,
with many material suppliers incorporating the Nordson technology in their own
test laboratories.

As global leaders in metering, mixing, and dispensing solutions for Battery Cell manufacturing applications, Nordson encourages early involvement in projects. Please reach out to Nordson Sealant Equipment’s team of experts to improve your production capabilities and performance.

Sponsored by Nordson Sealant Equipment

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