This servo electric cylinder press-fit system is specifically designed for fuel cell stack assembly. It employs full closed-loop servo electric cylinder drive technology to achieve high-precision pressing, holding, and locking. At the same time, it integrates an online leak testing system, allowing the overall sealing performance of the assembled stack to be evaluated without transferring the workpiece. This greatly enhances production line efficiency and ensures high quality and reliability.
PRODUCT DESCRIPTION
1. Integrated Press-Fitting and Leak Testing
●Completes the entire process of stack compression, pressure holding, leak testing, and pass/fail evaluation at a single workstation, eliminating secondary positioning errors and efficiency losses caused by workpiece transfer.
●Supports leak testing directly under a predefined clamping force, accurately simulating the sealing conditions of the fuel cell stack during actual operation.
2. High-Precision Leak Testing Module
●Equipped with either a differential pressure or mass flow leak tester, enabling precise measurement of leakage rates in the stack's hydrogen, air, and coolant channels.
●Testing accuracy can reach 0.1 sccm (standard cubic centimeters per minute) or better, meeting stringent fuel cell quality and acceptance standards.
3. Full Closed-Loop Precision Press-Fitting
●Servo electric cylinder control provides pressure accuracy of ±0.5% F.S. and repeat positioning accuracy of ±0.01 mm, ensuring consistent compression of every cell and establishing a reliable foundation for sealing performance.
●Supports constant-force pressure holding mode, automatically maintaining the preset compression force during leak testing to prevent data fluctuations caused by stack deformation.
4. Oil-Free Operation for Cleanroom Environments
●Fully electric servo-driven system with no hydraulic oil contamination risk.
●Compatible with ISO 14644 cleanroom requirements, making it ideal for fuel cell manufacturing environments.
5. Complete Process Data Traceability
●Real-time recording of force-displacement curves and leak-rate test curves throughout the process.
●All key parameters—including press force, displacement, holding time, leak rate, test pressure, and pass/fail results—are automatically linked to the stack serial number and uploaded to the MES system for full traceability.
1. Fuel Cell Stack Mass Production Lines
Provides a one-stop solution for stack compression, pressure holding, leak testing, and final fastening, improving throughput and product consistency.
2. R&D Laboratories
Enables comparative analysis of sealing performance under different compression forces through force-versus-leakage characterization, supporting stack design optimization and validation.
3. Stack Rework and Repair Stations
Facilitates rapid identification of leakage issues and supports maintenance and repair decision-making through accurate leak detection and analysis.
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