Magnetics Business & Technology - July/August 2023 - 9

FEATURE ARTICLE
for converting the power in the magnetic component, were
integrated into one part to lessen the thickness of the magnetic
component even more. " The advent of ultra-thin magnetic
components such as Nexlim has made it possible to reduce TV
power module thickness to as little as 7.2 to 9.9mm and overall
TV thickness to only 15 to 19.9mm.
Meanwhile, LG Innotek recently succeeded in developing a
third-generation ferrite magnetic material (X-3) based on the
original technology on the magnetic components that was secured
during the development of Nexlim. Energy loss can be cut
up to 30% more than the X-2 applied in Nexlim, and the company
expects it to play a decisive role in miniaturizing components
when X-3 is applied to electric vehicles.
" With this Edison Award
winning, LG Innotek has
once again presented its
unrivaled technology in
the magnetic material &
component field to the
global customers, " said
Kang Min-seok, CTO
of LG Innotek. He also
added, " We will continue
to invest in the advanced
development of future
innovative materials and
take the lead in creating
differentiated customer
value. "
becomes heavier, the actuator still can move the lens quickly
and accurately.
LG Innotek began developing the eco magnet in 2017 and has
been focusing on improving its magnetic performance since
2019 while also joining hands with SGI, which has an HRE
metal reduction technology. By adding new compounds, the two
companies have developed a coating liquid for the eco magnet
that uses less HRE metals yet produces especially strong magnetic
force in various products and temperatures. In addition,
the companies also secured a new magnet material optimized
for the coating liquid. The coating is applied to the magnet and
the magnet is heated to absorb the liquid evenly.
Eco-magnet uses reduced quantities
of rare earths, next goal for LG Innotek
is a powerful magnet wi
thout any heavy rare earths.
LG Innotek says it knew that it could not catch up with Japanese
competitors' technologies in a short period of time with the existing
development method. To speed up the process, it turned to
machine learning for design simulation. Using this technique,
the development period, which takes at least two years, was
halved. The number and time of experiments were significantly
reduced by automating the process of deriving optimal process
conditions such as the ratio of HRE metals and heat treatment
temperature. Previously, researchers had to repeat experiments
hundreds of times, which made the development period long
and incurred errors.
Beginning with applications such as steering motors for vehicles
and smartphone actuators, the company plans to quickly
expand the magnet's applications to air conditioners, refrigerators,
drones, urban flying cars and generators. It also plans to
develop a magnet that does not contain rare earth metals at all.
For more info, see www.lginnotek.com.
The company's eco magnet breakthrough came in late 2021
when it announced that it had developed the world's strongest
" eco magnet " in collaboration with the magnet company SGI
(Sunglim Group Industry) Co., targeting the global magnet
industry led by China and Japan.
The product significantly reduced the use of heavy rare earth
(HRE) metals by 60% compared to the previous product. It
raised the magnetic performance for home appliances and vehicle
steering motors to 14.8 kG (in kilogauss, magnet strength),
which is the world's highest level, said the company, claiming
to beat the products of Japanese companies that have led the
industry for nearly 40 years. " The industry believes that the
technical performance limit of this magnet is 15kG. The magnetic
performance of products commercialized so far is only 14.2 to
14.3 kG, " it said.
Applying the magnet to a steering motor is advantageous for
reducing the weight of a vehicle, reducing the size of the motor
while increasing its output and beneficial for electric and hybrid
vehicles that need weight reduction to improve mileage range.
When the eco magnet is applied to a high-pixel smartphone
camera, it produces clearer photos and videos by increasing the
driving force of the actuator, which moves the lens to focus. As
the specifications of smartphone cameras have enhanced, the
size and weight of lenses have increased, requiring actuators
to have stronger magnetic power. At the same time, as smartphones
get slimmer, the demand for small but powerful magnets
has increased while the eco magnet generates a stronger
magnetic force than other magnets of the same size, maintains
the company. The driving power of an actuator can be increased
by about 10% without an increase in size so that, even if a lens
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July/August 2023 * Magnetics Business & Technology 9
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Magnetics Business & Technology - July/August 2023

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