Sealed Temperature Sensor Module With Exposed Heat-Conductive Path
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Solution Overview
Problem
The detection accuracy of temperature sensors in electronic devices may decrease due to the configuration of the temperature sensor module.
Innovation Solution
Incorporating a heat-conductive member with higher thermal conductivity than the sealing member, which is thermally connected to the temperature sensor and exposed to be in contact with the part to be measured, thereby improving heat transfer and detection accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the temperature sensor is sealed in a resin sealing member, then the temperature sensor is protected from environmental damage, but the detection accuracy decreases due to poor thermal conductivity of the sealing member
Solution Approach 1:
The sealing member is divided into two distinct parts: a first sealing portion made of resin that provides environmental protection, and a second sealing portion made of a material with high thermal conductivity that enables accurate temperature detection. This segmentation allows each part to fulfill its specific function without compromising the other.
Solution Approach 2:
Different regions of the sealing member are assigned different material properties: the first sealing portion uses resin for protection, while the second sealing portion uses a thermally conductive material for accurate temperature measurement. This local differentiation of material quality resolves the contradiction between protection and measurement accuracy.
2Measurement precision
If a heat-conductive member is added to improve thermal transfer, then the detection accuracy improves, but the device complexity increases
Solution Approach 1:
The heat-conductive member is merged with the sealing member to form an integrated second sealing portion. This combination eliminates the need for separate heat-conductive components while maintaining improved thermal transfer, thus enhancing detection accuracy without proportionally increasing device complexity.
Solution Approach 2:
The second sealing portion serves multiple functions: it provides environmental sealing like the first portion, while simultaneously acting as a heat-conductive path for accurate temperature detection. This multi-functionality reduces the need for additional components.
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 use of a heat-conductive member enhances the transfer of temperature from the part to be measured to the temperature sensor, thereby improving detection accuracy and reducing errors.
Implementation Method 1
a heat-conductive member that is thermally connected to the temperature sensor and made of a material with higher thermal conductivity than the sealing member
Data Source
AI summary
A temperature sensor module includes a temperature sensor that outputs a detection signal corresponding to a temperature. The module has a mounting portion where the temperature sensor is mounted. A sealing member encapsulates the temperature sensor and the mounting portion. Additionally, the module includes a heat-conductive member that is thermally connected to the temperature sensor and made of a material with higher thermal conductivity than the sealing member. The heat-conductive member is arranged within the sealing member so that a part of the heat-conductive member is exposed from the sealing member. The heat-conductive member is designed to be in contact with a part to be measured.