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Concept of a Thermoelectric Module and Generator for Automotive Applications Based on an Integrated Functional Design

Heber, Lars and Kober, Martin and Freitag, Thomas Oliver and Haunstetter, Jürgen and Dreißigacker, Volker and Szabo, Patric and Sottong, Reinhard (2018) Concept of a Thermoelectric Module and Generator for Automotive Applications Based on an Integrated Functional Design. ICT/ECT-2018, 02.-05. Jul. 2018, Caen, Frankreich.

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Abstract

Despite the ongoing electrification of vehicle propulsion systems, combustion engine vehicles will continue to bear the brunt of passenger and goods transport world-wide for the next several years. A major challenge of the automotive industry is the achievement of the required reduction of CO2 emissions for internal combustion engines. Therefore, it is necessary to investigate all potential technologies to improve efficiency. Regardless of whether a conventional or hybrid vehicle concept is used, up to approximately 40 percent of the fuels chemical energy is lost as waste heat in the exhaust system. As a result, the DLR Institute of Vehicle Concepts, the Institute of Technical Thermodynamics and the Institute of Materials Research focus on utilizing exhaust heat through thermoelectric generators (TEG) in the DLR project Next Generation Car (NGC). Their primary goals are the development of cost-efficient thermoelectric modules (TEM) and TEGs with long-term stability and a maximized energy yield. In addition to overall TEG system design, the development of long-term stable, efficient TEMs for high-temperature applications is a great challenge. This paper presents the results of internal development activities and demonstrates integrated functional designs of the TEM and TEG. The concept of contacting the TEMs on the surface of the heat exchanger of the TEG will be discussed. The thermodynamic boundary conditions are identified in this connection as well as the thermomechanical interactions. The connection is based on an innovative plasma-sprayed multilayer film. Moreover, the implemented thermodynamic, thermoelectric and thermomechanical models are described. The research results in an integrated functional design, which is primarily focused on high converter efficiency and low manufacturing complexity for the automotive applications.

Item URL in elib:https://elib.dlr.de/120885/
Document Type:Conference or Workshop Item (Speech)
Title:Concept of a Thermoelectric Module and Generator for Automotive Applications Based on an Integrated Functional Design
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Heber, Larslars.heber (at) dlr.dehttps://orcid.org/0000-0001-5077-0984
Kober, Martinmartin.kober (at) dlr.dehttps://orcid.org/0000-0001-6988-5159
Freitag, Thomas OliverThomas.Freitag (at) dlr.dehttps://orcid.org/0000-0003-3859-1822
Haunstetter, Jürgenjuergen.haunstetter (at) dlr.deUNSPECIFIED
Dreißigacker, Volkervolker.dreissigacker (at) dlr.deUNSPECIFIED
Szabo, Patricpatric.szabo (at) dlr.deUNSPECIFIED
Sottong, Reinhardreinhard.sottong (at) dlr.dehttps://orcid.org/0000-0002-7349-7885
Date:2 June 2018
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Thermoelektrischer Generator, Thermoelektrisches Modul, Modulaufbau, thermomechanische Auslegung
Event Title:ICT/ECT-2018
Event Location:Caen, Frankreich
Event Type:international Conference
Event Dates:02.-05. Jul. 2018
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:Terrestrial Vehicles (old)
DLR - Research area:Transport
DLR - Program:V BF - Bodengebundene Fahrzeuge
DLR - Research theme (Project):V - NGC Fahrzeugkonzepte (old)
Location: Stuttgart
Institutes and Institutions:Institute of Vehicle Concepts > Alternative Energiewandler
Institute of Engineering Thermodynamics > Electrochemical Energy Technology
Institute of Engineering Thermodynamics > Thermal Process Technology
Institute of Materials Research > Thermoelectric Materials and Systems
Deposited By: Heber, Lars
Deposited On:10 Jul 2018 10:34
Last Modified:10 Jul 2018 10:41

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