Accumulated Thermoelectric Generator Module for Vehicle Exhaust
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Solution Overview
Problem
The existing thermoelectric generators for vehicles have poor structural efficiency in heat exchange, resulting in a smaller temperature difference between the heating and cooling units, which limits the power generation efficiency.
Innovation Solution
An accumulated type thermoelectric generator with a thermoelectric generating unit mounted between exhaust gas inlet and outlet pipes, featuring a plurality of unit modules with thermoelectric elements, optimized for efficient heat exchange and layout flexibility, allowing for increased power generation and easy maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a conventional thermoelectric generator structure is used, then the device can generate electricity from exhaust heat, but the structural efficiency of heat exchange is poor resulting in small temperature difference
Solution Approach 1:
The thermoelectric generator is divided into multiple unit modules, each with its own heating unit and cooling unit. This segmentation allows each module to independently optimize heat exchange pathways, maximizing the temperature difference across thermoelectric elements while maintaining manufacturing simplicity through modular assembly.
Solution Approach 2:
The patent introduces a three-dimensional accumulated structure where unit modules are stacked vertically. This dimensional transition from planar to spatial arrangement enables multiple heating and cooling pathways to coexist, significantly increasing the temperature difference without complicating the basic modular structure.
2Power
If the number of thermoelectric elements is increased to maximize power generation, then the device complexity and manufacturing difficulty increase
Solution Approach 1:
Instead of using one large complex assembly, the system divides thermoelectric elements into multiple unit modules. Each module contains a manageable number of thermoelectric elements that can be independently manufactured and assembled, reducing overall device complexity while achieving high power generation through cumulative effect.
Solution Approach 2:
Multiple unit modules are combined in an accumulated configuration to achieve high power generation. Each module contributes to the total power output, and their modular nature allows for scalable assembly without proportionally increasing system complexity.
3Adaptability or versatility
If a fixed structure is used, then manufacturing is simplified, but the device cannot adapt to varying engine outputs and driving states
Solution Approach 1:
The system is divided into independent unit modules that can be selectively assembled. This segmentation enables the manufacturer to produce standardized modules and adapt the final configuration to match different engine outputs and driving state requirements, maintaining manufacturing simplicity through modular standardization.
Solution Approach 2:
The accumulated type structure allows for dynamic adaptation by adding or removing unit modules based on the specific application requirements. The modular design enables the system to be customized for different engine types and power demands without requiring a complete redesign.
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
This configuration enhances power generation efficiency by maximizing temperature differences across thermoelectric elements, adapts to varying engine outputs, and simplifies maintenance and component supply, while ensuring structural strength and ease of part replacement.
Implementation Method 1
A thermoelectric generator refers to an apparatus which obtains electrical energy by using a potential difference generated between a heating element and a cooling element when a temperature difference is applied to both ends of the heating element and the cooling element
Implementation Method 2
a heating unit for performing heat exchange/transfer between the exhaust gas and a high temperature end of a thermoelectric module
Implementation Method 3
a cooling unit for cooling a low temperature end of the thermoelectric module
Data Source
AI summary
In one embodiment, a thermoelectric generator for a vehicle is provided. In particular, a thermoelectric generator is provided that includes a thermoelectric generating unit which is mounted between an exhaust gas inlet pipe through which an exhaust gas flows within and an exhaust gas outlet pipe through which the exhaust gas is discharged. The thermoelectric generating unit also includes a coolant inlet formed on one side thereof and a coolant outlet formed on the other side. More specifically, the thermoelectric generator is formed by assembling a plurality of unit modules which each have thermoelectric elements.