Thermoelectric Device Segmentation for Vehicle Exhaust Integration
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Solution Overview
Problem
Existing thermoelectric generators for motor vehicles are expensive, inefficient, and difficult to integrate into exhaust gas systems due to their large size and low efficiency, making them unsuitable for series production.
Innovation Solution
A thermoelectric device comprising a module with alternating p and n-doped semiconductor elements between carrier layers, where the carrier layers form a heat transfer layer and are connected to a hot and cold side, enabling efficient conversion of thermal energy to electrical energy through the Seebeck effect, with a compact design and flexible power adaptation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If conventional thermoelectric generators are used, then thermal energy can be converted into electrical energy, but the conversion efficiency is low and production costs are high
Solution Approach 1:
The thermoelectric generator is divided into multiple modules, each containing several thermoelectric elements arranged in series. This segmentation allows for optimized heat transfer paths and improved overall conversion efficiency while enabling standardized mass production of individual modules, thereby reducing production costs.
Solution Approach 2:
The patent employs composite material structures combining different thermoelectric materials with optimized thermal and electrical conductivities. This allows maximization of the Seebeck effect for improved conversion efficiency while using cost-effective material combinations suitable for series production.
2Power
If conventional thermoelectric generators are designed, then electrical energy generation is achieved, but the structural space required is very large
Solution Approach 1:
The patent transitions from planar arrangements to three-dimensional stacked module configurations, with thermoelectric elements arranged vertically between hot and cold side carriers. This dimensional change increases power density, generating more electrical energy within a compact volume suitable for integration into exhaust systems.
Solution Approach 2:
Multiple thermoelectric elements are nested within each module structure, with series-connected elements positioned one after another along the heat flow path. This nesting approach maximizes the use of available space, increasing power output without proportionally increasing external dimensions.
3Adaptability or versatility
If conventional thermoelectric generators are implemented, then energy conversion is possible, but integration into exhaust gas systems is difficult
Solution Approach 1:
The module design incorporates universal mounting interfaces and standardized connection protocols that enable the same basic module structure to be integrated into various exhaust system configurations. The hot and cold side carriers can be adapted to different mounting positions and thermal environments, enhancing versatility across application scenarios.
Solution Approach 2:
The patent employs flexible thermal management capabilities where the cold side carriers can be dynamically connected to different cooling sources (exhaust gas recirculation, coolant systems, or ambient air). This dynamic adaptability simplifies integration by allowing the system to optimize its thermal management strategy based on specific vehicle platform requirements.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The device achieves improved efficiency and compactness, allowing for flexible power adaptation and easier integration into motor vehicle systems, reducing production costs and increasing energy efficiency.
Implementation Method 1
Thermoelectric materials are of a type such that they can effectively convert thermal energy into electrical energy (Seebeck effect)
Implementation Method 2
an electrical insulation layer on the first carrier layer and on the second carrier layer toward the interspace
Data Source
AI summary
A thermoelectric device contains at least one module having a first carrier layer and a second carrier layer, an interspace disposed between the first carrier layer and the second carrier layer, and an electrical insulation layer disposed on each of the first carrier layer and on the second carrier layer toward the interspace. The thermoelectric device further has a plurality of p and n-doped semiconductor elements, which are arranged alternately in the interspace between the insulation layers and are alternately electrically connected to one another.