Thermoelectric Module Layout for Faster Temperature Feedback
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Solution Overview
Problem
Conventional thermoelectric modules experience time lags in temperature control due to distance between temperature-detecting elements and thermoelectric elements, leading to potential oxidation and melting of solder, especially in applications like refrigerators where air transmission is slow, causing reliability and durability issues.
Innovation Solution
A thermoelectric module design with temperature-detecting elements attached to the inner surfaces of support substrates, allowing for immediate detection of temperature abnormalities and improved attachment of heat exchangers and objects, featuring a series connection of P-type and N-type thermoelectric elements with connecting electrodes, and a sealing member to reduce dew condensation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the temperature-detecting element is placed at a distance from the thermoelectric element, then the measurement range is expanded, but the temperature control response time increases causing time lag
Solution Approach 1:
The patent introduces a support substrate as an intermediary thermal conduction path between the thermoelectric element and the temperature-detecting element. The support substrate with high thermal conductivity immediately transmits temperature changes from the thermoelectric element to the temperature-detecting element, eliminating the need for long-distance heat transmission through air or other slow media, thus resolving the time lag while maintaining measurement capability
Solution Approach 2:
The temperature-detecting element is pre-positioned on the support substrate in close proximity to the thermoelectric element before operation begins. This preliminary positioning ensures that temperature detection occurs at the source of temperature changes, enabling immediate response without waiting for temperature propagation through intermediate media
2Loss of time
If the temperature-detecting element is placed close to the thermoelectric element, then the temperature control response time is reduced, but the measurement range and accessibility are limited
Solution Approach 1:
The patent positions the temperature-detecting element on the support substrate in a different spatial dimension - specifically on the surface of the support substrate rather than in direct contact with the thermoelectric element. This dimensional arrangement allows close thermal coupling through the substrate while maintaining spatial separation that preserves accessibility and measurement range
3Device complexity
If the thermoelectric module operates without adequate temperature monitoring, then the structure is simpler, but the durability decreases due to oxidation and solder melting
Solution Approach 1:
The patent implements a feedback mechanism where the temperature-detecting element continuously monitors the temperature at the thermoelectric element location and provides real-time temperature data. This feedback enables the control system to adjust operating conditions to prevent temperature extremes that would cause oxidation or solder melting, thereby improving durability while maintaining relatively simple structure
Solution Approach 2:
The temperature-detecting element positioned on the support substrate provides early warning of temperature abnormalities before they reach dangerous levels. This beforehand detection allows preventive action to be taken, cushioning against the harmful effects of oxidation and solder melting by enabling early intervention in the temperature control process
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
Enhances the durability and reliability of thermoelectric modules by reducing time lags in temperature control, preventing oxidation and melting, and improving the overall performance and assembly yield.
Implementation Method 1
a thermoelectric element in which Peltier effect is utilized has been used as a thermoelectric element for cooling because by passing an electric current therethrough, one end generates heat and the other end absorbs heat
Implementation Method 2
a temperature-detecting element provided on the inner surface of the first support substrate; because a temperature-detecting element is attached to an inner surface of the first support substrate, temperature abnormality in a thermoelectric-element part can be immediately detected
Data Source
AI summary
A thermoelectric module having an excellent durability is provide.The thermoelectric module comprises: a first support substrate having a first inner surface, a first outer surface and a plurality of first connecting electrodes formed on the first inner surface; a second support substrate having a second inner surface opposed to the first inner surface, a second outer surface and a plurality of second connecting electrodes formed on the second inner surface; a plurality of P-type thermoelectric elements and a plurality of N-type thermoelectric elements provided between the first inner surface and the second inner surface; a temperature-detecting element provided on the first inner surface.