Indirect Temperature Sensing Structure for Safe Charging Contacts
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Solution Overview
Problem
Existing temperature measurement technologies face challenges in accurately and rapidly measuring the temperature of inaccessible or hazardous objects without damaging the measurement element, particularly in high-power charging devices where real-time monitoring is crucial for safety.
Innovation Solution
A temperature measurement structure utilizing a heat conduction medium that indirectly transfers the temperature to a sensor through a pressure supply mechanism, ensuring rapid and accurate temperature monitoring while avoiding direct contact with the measured object.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If contact temperature measurement is used, then measurement accuracy is improved, but the temperature sensor may be damaged by high current or hazardous conditions
Solution Approach 1:
The patent introduces a heat conduction medium as an intermediary between the measured object and the temperature sensor. This medium conducts heat from the measured object to the sensor without requiring direct contact, thereby maintaining measurement accuracy while protecting the sensor from damage by high current or hazardous conditions.
2Reliability
If non-contact temperature measurement is used, then sensor safety is improved, but measurement accuracy and response speed deteriorate
Solution Approach 1:
The heat conduction medium serves as a physical intermediary that enables near-contact measurement. It maintains sufficient thermal coupling for accurate and rapid measurement while keeping the sensor at a safe distance from the measured object, thus resolving the contradiction between safety and measurement quality.
Solution Approach 2:
The patent replaces non-contact optical measurement methods with a thermal conduction-based approach. By using the heat conduction medium to transfer thermal energy directly to the sensor, the system achieves faster response and higher accuracy compared to optical methods, while still maintaining sensor safety.
3Speed
If direct contact between sensor and measured object is made, then temperature measurement speed is improved, but the sensor is exposed to harmful factors
Solution Approach 1:
The heat conduction medium acts as a protective intermediary that enables rapid heat transfer from the measured object to the sensor without direct electrical or physical contact. This eliminates the risk of electric shock damage to the sensor while maintaining fast temperature measurement speed through efficient thermal conduction.
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 solution enables rapid reflection of real-time temperature with improved accuracy (±3K compared to ±8K) and avoids damage to the temperature sensor, maintaining a simple, reliable, and safe structure without complex mechanisms or power sources.
Implementation Method 1
the heat conduction medium is mounted on the pressure supply mechanism, the pressure supply mechanism supplies pressure to make the heat conduction medium in contact with a measured object and the temperature sensor respectively
Data Source
Figure 1
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Figure 4~5
AI summary
A temperature measurement structure, a charging apparatus and a motor vehicle. The temperature measurement structure includes a heat conduction medium (4), a temperature sensor (2) and a pressure supply mechanism, and the heat conduction medium (4) is mounted on the pressure supply mechanism, the pressure supply mechanism supplies pressure to make the heat conduction medium (4) in contact with a measure object (6) and the temperature sensor (2) respectively, and the temperature sensor (2) determines a temperature of the measured object (6) through a temperature of the heat conduction medium (4). The temperature of the measured object (6) is indirectly conducted to the temperature sensor (2) through the heat conduction medium (4), so that not only the temperature of the measured object (6) is monitored, but also a disruptive influence on the temperature sensor (2) is avoided.