Multi-Property Material Measurement Device for High-Temperature Characterization
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Solution Overview
Problem
Current methods for measuring electrical, thermal, and Seebeck coefficients require separate instruments and cannot accurately characterize these properties simultaneously in a single sample, especially at high temperatures, leading to inefficiencies and inaccuracies in material property determination.
Innovation Solution
A device and method that consecutively measure thermal conductivity, electrical conductivity, Seebeck coefficient, and ionic conductivity, and surface temperatures in a single sample without moving it or breaking a vacuum, using a unique thermal and electrical engineering design with an actively heated jacket and spring-loaded thermocouples to minimize parasitic heat losses and ensure accurate high-temperature measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If separate instruments are used to measure electrical conductivity, thermal conductivity, and Seebeck coefficient, then measurement coverage is comprehensive, but measurement efficiency is low and time consumption is high
Solution Approach 1:
The patent combines multiple measurement functions (electrical conductivity, thermal conductivity, Seebeck coefficient, and surface temperature measurements) into a single integrated instrument. The device uses a unified probe structure with both electrical and thermal measurement capabilities, allowing all measurements to be performed on a single sample without requiring multiple separate instruments, thereby significantly improving measurement efficiency
Solution Approach 2:
The measurement instrument is designed with multi-functionality to perform various material characterizations including electrical conductivity, thermal conductivity, Seebeck coefficient, and surface temperature measurements. This universal design allows a single device to replace multiple specialized instruments, reducing the number of measurements needed and improving overall productivity
2Measurement precision
If multiple instruments are used for measurements, then comprehensive property characterization is achieved, but sample handling complexity increases
Solution Approach 1:
The patent integrates multiple measurement capabilities into a single probe that can measure electrical properties, thermal properties, and surface temperature simultaneously. This eliminates the need to move the sample between different instruments or reconfigure measurement setups, significantly simplifying sample handling while maintaining comprehensive property characterization
Solution Approach 2:
The universal measurement probe is designed to perform multiple functions including electrical conductivity measurement, thermal conductivity measurement, Seebeck coefficient measurement, and surface temperature monitoring. This multi-functional design allows all measurements to be conducted on the same sample in the same experimental setup, improving ease of operation without compromising measurement precision
3Measurement precision
If conventional measurement methods are used, then standard procedures are followed, but temperature-dependent performance and surface temperature cannot be measured
Solution Approach 1:
The patent combines thermal conductivity measurement capability with surface temperature measurement capability in a single integrated system. The device uses a unique probe design that can simultaneously measure bulk thermal properties and surface temperature, enabling comprehensive temperature-dependent performance characterization that conventional separate instruments cannot achieve
Solution Approach 2:
The measurement instrument is designed with enhanced versatility to perform both bulk material property measurements (thermal conductivity, electrical conductivity, Seebeck coefficient) and surface temperature measurements. This multi-functional capability allows the device to characterize temperature-dependent performance across different length scales, from bulk properties to surface conditions, which is essential for understanding thermal management in energy storage devices
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
Enables simultaneous and accurate characterization of material properties at high temperatures, reducing experimental errors and increasing throughput, allowing for the qualification of energy conversion devices and materials during production, with improved precision and efficiency.
Implementation Method 1
Measured thermovoltage and Seebeck coefficient of a reference sample can be used to determine a calibration coefficient linking a thermocouple probe temperature to the intrinsic temperature at a top of the sample
Implementation Method 2
an actively heated jacket and spring-loaded thermocouples to minimize parasitic heat losses
Implementation Method 3
spring-loaded thermocouples to minimize parasitic heat losses
Data Source
AI summary
A device for measuring a plurality of material properties includes a structure and sensors in the structure configured to sense at least thermal conductivity, electrical conductivity, and Seebeck coefficient for a single sample consecutively while maintaining a vacuum or inert gas environment. Embodiments can also measure ionic conductivity and/or surface temperatures. Embodiments can measure any suitable plurality of the above properties.