Fuel cell test fixture temperature control method and system based on dynamic PID optimization

The temperature control method for fuel cell test fixtures optimized by dynamic PID solves the problem of precise temperature control of fixtures in existing technologies, and achieves rapid and uniform temperature adjustment, thereby improving the accuracy and efficiency of membrane electrode performance testing.

CN121995983APending Publication Date: 2026-05-08上海智能新能源汽车科创功能平台有限公司
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Patent Information

Application Number
CN202512030569.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-12-30
Publication Date
2026-05-08

AI Technical Summary

Technical Problem

Existing fuel cell fixture temperature control technology is difficult to achieve precise regulation, causing the fixture operating temperature to exceed the set value, which affects the accuracy of membrane electrode performance testing.

Method used

A dynamic PID-optimized fuel cell test fixture temperature control method is adopted. By dividing the heating temperature difference range, different initial PID parameters are configured for each range. Combined with the overall average temperature and local temperature difference, the heating or cooling power is adjusted in real time to achieve dynamic temperature control.

Benefits of technology

It achieves rapid, accurate, and uniform temperature control for fuel cell test fixtures, shortens the time to reach the set temperature, reduces temperature overshoot and fluctuations, and improves the accuracy and efficiency of testing.

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Abstract

The invention relates to a fuel cell test fixture temperature control method and system based on dynamic PID optimization, and the method comprises the steps: obtaining a target working temperature and a temperature uniformity threshold value of a fuel cell test fixture, dividing the target working temperature and the temperature uniformity threshold value into a plurality of heating temperature difference intervals, and configuring differentiated PID initial parameters for each heating temperature difference interval; synchronously acquiring temperature data of a plurality of areas of the fuel cell test fixture in real time, and calculating the overall average temperature of the fixture and local temperature differences among the areas; judging whether the current state is in an overall heating demand state or an overall cooling demand state, and judging whether local temperature compensation is needed or not based on the relationship between the local temperature difference and a temperature uniformity threshold value; and the dynamic PID parameter corresponding to the current heating temperature difference interval is finely adjusted periodically according to the overall temperature fluctuation and the local temperature difference condition in the temperature control process.
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