Polymer Battery Pressure Test Fixture for Pouch Cell Clamping and Cycling Analysis

Product Overview

This polymer battery pressure test fixture provides precise, repeatable mechanical compression for pouch-type lithium-ion and solid-state battery cells during electrochemical cycling and volumetric expansion testing. By establishing a rigid, parallel constraint across the active electrode area, this system prevents electrode delamination, reduces internal resistance fluctuations, and mitigates uneven lithium plating under prolonged charge-discharge regimes.

Engineered specifically for academic laboratories, battery pilot lines, and industrial R&D facilities, the equipment accommodates pouch cells up to 90 mm by 82 mm. It applies adjustable mechanical clamping forces up to 3000 N, making it an essential tool for evaluating cell swelling dynamics, pressure-dependent cycle retention, and interface contact efficiency in next-generation polymer and composite electrolyte designs.

Constructed from high-grade 8 mm aluminum alloy tooling plates paired with industrial die springs and elastomeric cushioning layers, this fixture guarantees exceptional structural stability and parallelism under continuous high-load conditions. The robust hardware configuration maintains uniform surface load distribution across thousands of test cycles without mechanical fatigue or plate deflection.

Key Features

• Continuous Pressure Range up to 3000 N: The fixture provides fully adjustable compression from 0 N to 3000 N, allowing researchers to simulate diverse operational stack pressures, from light residential pack loads to heavy commercial constraint environments.
• Precision-Machined 8 mm Aluminum Alloy Plates: Heavy-duty 8 mm thick aluminum top and bottom plates resist structural bending and torsional flexing under full 3000 N clamping forces, ensuring consistent coplanarity across the entire cell surface.
• Quad-Spring Uniform Load Distribution: Four heavy-duty rectangular die springs (14 mm diameter) work in tandem with M6 high-tensile guide fasteners to distribute mechanical force evenly across the four corners, eliminating localized stress points that cause premature cell failure.
• Dual-Layer Surface Damping and Protection: Includes precision-cut 2 mm silicone cushion pads (90 mm x 84 mm) that absorb minor surface irregularities and evenly transfer compression into the active pouch cell body without puncturing delicate aluminum laminated films.
• Integrated 0.25 mm Electrical and Thermal Insulation: Dual 90 mm x 84 mm x 0.25 mm high-dielectric card stock sheets sit between the cell pouch and the metal fixture plates, preventing electrical shorting and isolating the cell during impedance spectroscopy and high-voltage cycling.
• Accommodating Pouch Cell Geometry: Optimized internal cavity supports pouch cells up to 90 mm in length and 82 mm in width, fitting standard single-layer and multi-layer laboratory pouch prototypes while keeping the overall external envelope compact at 90 mm by 110 mm.
• Streamlined Five-Step Clamping Protocol: Simplified mechanical architecture enables fast cell insertion, alignment, and screw pre-tightening, drastically reducing assembly time while maintaining torque reproducibility across multi-channel testing racks.

Applications

Technical Specifications

Primary Equipment Parameters

Standard Accessory Bill of Materials

Standard Operating Sequence

Why Choose This Product

• Rigid Precision Engineering: Manufactured from 8 mm high-grade aluminum alloy plates with precise surface flatness, this unit prevents plate warping under the maximum 3000 N force threshold, guaranteeing true parallel contact across the cell surface.
• Comprehensive Protection Stack: Furnished complete with calibrated rectangular compression springs, elastomeric silicone pressure-leveling pads, and 0.25 mm insulation liners, providing an immediate turnkey solution for delicate pouch cell research.
• Optimized for Standard Research Pouch Formats: Specifically tailored to house cells up to 90 mm x 82 mm, fitting standard academic and industrial pilot-scale pouch cells without taking up excess footprint in environmental chambers.
• Repeatable Multi-Channel Scaling: Highly standardized dimensional tolerances and straightforward five-step mechanical operation allow laboratories to deploy dozens of matching fixtures across cycling channels with identical mechanical baselines.

Contact our technical sales team today to request a quote or discuss customized clamping fixtures tailored to your battery testing specifications.

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