Global warming is an ongoing challenge.
Hybrid vehicles and EVs have become a new trend in the automobile industry,
while new energy and dispersed power sources are becoming popular power supply
measures. Yamaha has a long history of producing thermoelectric cooler modules
for optical communication networks, such as 5G, and has adapted its knowledge,
experience, and proprietary technology to develop the YGPX024 TEG module, which
it expects to contribute to CO2 reduction and human society.
The YGPX024 module generates electricity
using temperature differences between the top and bottom surfaces and offers
high power density with an enlarged footprint of 143mm x 103mm, a size
previously difficult to achieve. A single module can generate up to 143W of
electricity. As part of an automotive exhaust system, the module uses exhaust
gas heat energy to contribute to CO2 reductions and improved fuel efficiency.
Other conceivable usages include utilizing factory waste heat, co-generation,
stationary fuel cell batteries, and more.
Key Features
1. World’s most powerful TEG module*2
The YGPX024 uses know-how cultivated by
thermoelectric technology development, including high-performance
thermoelectric materials and precise mounting technology, to achieve high
operating temperatures (max. 400°C / reg. 300°C) and high output density. The
result is the world’s highest electricity output. A single module can generate
143W (1.5W/cm2 output density*3) of electricity when the temperature difference
between the two sides is 385°C (high 400°C, low 15°C). In automotive
applications, with a predicted difference of 185°C (high 285°C, low 100°C), the
module can achieve a high output of 40W.
2. World’s largest*1 TEG module with high
reliability
The YGPX024 is designed to be usable in the
toughest operating environments, including automotive applications. It uses
Yamaha’s proprietary stress relaxation structure and stainless encapsulation
structure. As a result, it is the world’s largest TEG module with high
reliability, with an operational lifetime equivalent to 150,000km driving
distance in an automotive application. While an ordinary vehicle might have
previously required dozens or even hundreds of modules, a drastic reduction in
numbers is possible thanks to the size and reliability of the YGPX024.
3. Mounts easily
The YGPX024 has a moderate flexibility that
offers excellent thermal contact. This eliminates the need for cumbersome
processes such as grease application and anti-oxidation/condensation measures.
By simply pressing the module between the heat source and cooling surface,
power generation begins.
What is a TEG module?
TEG modules take advantage of the upper and
lower surfaces, thermoelectric materials accumulate thermopower, which can be
converted to electricity. Modules have no mechanical moving parts, and thus a
low failure rate. Because of this, along with their high-density output, TEG
modules are expected to contribute greatly to energy harvesting systems
utilizing renewable energy.
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