Yamaha to start offering samples of TEG YGPX024 module for use in vehicles

6 March 2021

Yamaha Corporation has developed the YGPX024, the largest * 1 and most powerful * 2 Thermoelectric Power Generation (TEG) module in world, using thermal energy from automobile exhaust gases to generate electricity. Sample sales are scheduled to begin March 5 (Japanese Standard Time).

Global warming is a constant challenge. Hybrid vehicles and EVs have become a new trend in the automotive industry, as new energies and dispersed energy sources are becoming commonly used power metrics. Yamaha has a long history of producing thermoelectric cooling modules for optical communication networks, such as 5G, and has adapted its knowledge, experience and proprietary technology to develop the TEG YGPX024 module which is expected to help reduce CO 2 and benefit to human society.

The YGPX024 module generates electricity by utilizing the temperature differences between the top and bottom surfaces, and delivers high power density with an enlarged 143mm x 103mm footprint, a size previously difficult to achieve. A single module can produce up to 143 W of electricity. As part of an automotive exhaust system, the module uses thermal energy from the exhaust gases to help reduce CO 2 while providing better fuel efficiency. Other possible uses include the use of waste heat from factories, cogeneration, stationary fuel cells, and more.

Key features

1. The most powerful TEG module in the world * 2

The YGPX024 uses know-how cultivated by the development of thermoelectric technology, 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: the highest electricity production in the world. A single module can produce 143W (output density of 1.5W / cm 2 * 3 ) of electricity when the temperature difference between the two sides is 385 ° C (high of 400 ° C, low of 15 ° VS). In automotive applications, where the expected difference is 185 ° C (high 285 ° C, low 100 ° C), the module can generate a high output of 40 W.

2. The world's largest TEG module * 1 with high reliability

The YGPX024 is designed for use in the harshest operating environments, including automotive applications. It uses Yamaha's proprietary Stress Relaxation Structure and Stainless Encapsulation Structure. The result: The YGPX024 is the world's largest TEG module, featuring high reliability, with an operational life equivalent to 150,000 km of driving distance in an automotive application. While an ordinary vehicle could previously require dozens or even hundreds of modules, their number can now be greatly reduced thanks to the size and reliability of the YGPX024.

3. Easy to assemble

YGPX024 features moderate flexibility providing excellent thermal contact. Time-consuming processes such as grease application and anti-oxidation / condensation measures are thus unnecessary. Power generation is initiated by simply pressing the module between the heat source and the cooling surface.

What is a TEG module?

TEG modules take advantage of the top and bottom surfaces, thermoelectric materials store thermoelectric energy, which can be converted into electricity. As the modules have no moving mechanical parts, the failure rate is low. This plus, added to their high density output, makes TEG modules promise to make a significant contribution to energy harvesting systems using renewable energy.

More information, including sample specifications, can be found at:

* 1,2 In 2021, according to an internal investigation
* 3 The exit density is expressed by surface at high temperature

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Media Inquiries:

Yamaha Corporation, Media Relations Group, Corporate Communications Division, Kenji Arakawa
Contact Form: https://inquiry.yamaha.com/contact/?act=55&lcl=en_WW
Tel. : +81 3 5488 6601 (Japanese correspondence only)
Web: www.yamaha.com

General Inquiries:
Yamaha Corporation, Electrical Appliance Division


Source: businesswire.com