An online monitoring method and test system for dynamic sealing performance of a photovoltaic connector

By using multi-channel signal timestamp synchronization mapping and environmental thermodynamic parameter calculation, the data alignment and interference problems in the dynamic sealing performance monitoring of photovoltaic connectors were solved, enabling precise positioning and accurate evaluation of sealing performance.

CN122409090APending Publication Date: 2026-07-17NINGBO DONGHAO PHOTOVOLTAIC TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NINGBO DONGHAO PHOTOVOLTAIC TECH CO LTD
Filing Date
2026-04-15
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing methods for monitoring the dynamic sealing performance of photovoltaic connectors are difficult to align data on the same time axis. They are affected by mechanical transmission dead zones and environmental thermodynamic factors, making it impossible to accurately assess sealing performance. Furthermore, they cannot identify the unidirectional torsion state of polymer seals, leading to inaccurate positioning of sealing failures.

Method used

By synchronously mapping the timestamps of multi-channel signals, the phase time difference between sensors is eliminated, the sealing cross-sectional area is located using the step physical abrupt change point, and the interference is eliminated by combining the calculation of environmental thermodynamic parameters, the deformation of the sealing component is quantified, the electromechanical delay is eliminated, and the sealing failure is accurately located.

Benefits of technology

It enables synchronous and accurate evaluation of the dynamic sealing performance of photovoltaic connectors, eliminates mechanical and environmental interference, accurately locates the sealing failure position, and improves the synchronization and accuracy of test data.

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Abstract

本发明涉及光伏设备检测技术领域,公开了一种光伏连接器动态密封性能的在线监测方法及测试系统,包括装夹连接器建立密闭回路并充入气体,采集数据并基于时间戳映射生成同步序列;驱动连接器微动,基于突变点推导等效密封截面积并执行自适应微动控制;结合截面积与热力学参数计算理论气压,比对得出瞬态补偿压降;获取压降梯度,提取不对称度指数并在越限时执行降级控制;超出安全阈值时判定失效触发硬中断停机,回溯生成失效溯源日志。本发明消除了多源信号的相位错位,排除了温湿度对测试气压的干扰,量化了密封件往复微动中的不对称形变,并通过剔除机电系统响应延迟,还原并精确定位了初始引发泄漏的物理空间位移。
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