A thermal resistance test system and method for a thermal device

By using a dual-layer closed-loop system for automatic calibration and precise testing, the problem of inconsistent temperature monitoring of thermistor products leaving the factory has been solved, enabling accurate thermal resistance testing, improving product yield, and reducing costs.

CN116879348BActive Publication Date: 2026-06-09P&R MEASUREMENT INC
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Patent Information

Application Number
CN202310834384.6
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-07-07
Publication Date
2026-06-09
Estimated Expiration
2043-07-07

AI Technical Summary

Technical Problem

Existing technologies cannot guarantee consistent temperature monitoring accuracy for thermistor products leaving the factory, leading to increased defect rates and higher maintenance costs. Furthermore, manual calibration methods cannot obtain accurate data.

Method used

A dual-layer closed-loop system is adopted, which combines the drive motors of the upper and lower chambers with TEC cooling plates to achieve precise pressure application and temperature control. Combined with automatic calibration and accurate testing, the data of the drive motors and cooling plates are recorded for subsequent calibration.

Benefits of technology

It enables precise thermal resistance testing of thermistors, improves product yield, reduces labor and maintenance costs, and ensures the accuracy and consistency of test results.

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Abstract

This invention discloses a thermal resistance testing system and method for a thermistor, relating to the field of double-sided thermal resistance testing technology. The system includes an upper cavity and a lower cavity. The upper cavity includes an upper outer plate assembly and an upper inner plate assembly. An upper drive motor is mounted on the upper outer plate assembly, and an upper water-cooling assembly is installed inside the upper inner plate assembly. An upper cooling element and an upper heat-conducting component are sequentially mounted at the lower end of the upper water-cooling assembly. Both the upper outer plate assembly and the upper heat-conducting component are mounted on an upper pressure plate. The lower cavity includes a lower outer plate assembly and a lower inner plate assembly. A lower drive motor is mounted on the lower outer plate assembly, and a lower water-cooling assembly is installed inside the lower inner plate assembly. A lower cooling element and a lower heat-conducting component are sequentially mounted at the upper end of the lower water-cooling assembly. Both the lower outer plate assembly and the lower heat-conducting component are mounted on a download plate. The closed-loop system of this invention is a double-layer closed-loop system, enabling automatic calibration before testing, and continuous feedback results for more accurate testing.
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Citation Information

Patent Citations

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