Development of automotive thermoelectric waste heat recovery system integration using evolved environmentally benign material of magnesium silicide

2021 Fiscal Year Final Research Report

• Project/Area Number: 19H00772
• Research Category: Grant-in-Aid for Scientific Research (A)
• Allocation Type: Single-year Grants
• Section: 一般
• Review Section: Medium-sized Section 21:Electrical and electronic engineering and related fields
• Research Institution: Tokyo University of Science
• Principal Investigator: IIDA TSUTOMU 東京理科大学, 先進工学部マテリアル創成工学科, 教授 (20297625)
• Co-Investigator(Kenkyū-buntansha): 麻原 寛之 岡山理科大学, 工学部, 准教授 (50709615)
• Project Period (FY): 2019-04-01 – 2022-03-31
• Keywords: 熱電変換 / 環境低負荷半導体 / 排熱発電

Outline of Final Research Achievements

By converting unused automotive exhaust heat in the medium temperature range (<600 ° C) into regenerative power using a thermoelectric power generation system, improving fuel efficiency (CO2 reduction) of electric vehicles equipped with a power generation engine is effective in reducing carbon.
We conducted research and development to operate the thermoelectric (TE) power generation system effectively in automobile applications and produced results.
(1) Develop a thermoelectric power generation module structure that introduces a ceramic multilayer board with a variable heat conduction function; (2) Develop a heat exchange/heat conduction mechanism with a built-in temperature control function that does not exceed the durable temperature of the TE power generation (TEG) module from the engine exhaust system; (3) Develop circuit technology that converts the power generated by the TEG module into DC-DC power conversion (specification for TE batteries) with high conversion efficiency.

Free Research Field

電気電子材料、エネルギー変換材料

Academic Significance and Societal Importance of the Research Achievements

学術的には、熱発電材料の基本的な発電特性の向上、熱伝導を可変できる基板構造、可変コンダクタンスヒートパイプ導熱、新型動作方式によるDC-DC電力変換回路開発の取り組みにより、産業化視点での社会実装に必要な基盤技術となりうる次期型高出力Mg2Siクリーン熱電池特性向上、熱発電用熱交換器構造小型高熱伝達型熱電専用熱交換機、極低損失型熱電発電モジュール特化型DC-DC電力変換器の実現に目処をつけた。