14500 Cylindrical Battery Case with Safety Cap and Gasket for Cell Assembly and Research

Product Overview

This cylindrical cell hardware assembly delivers an uncompromising structural enclosure tailored for premium 14500 lithium-ion and sodium-ion battery fabrication. Fabricated from ultra-pure Japanese SPCC cold-rolled steel, the enclosure combines exceptional mechanical ductility with precise wall uniformity. Each unit integrates a deep-drawn steel canister, a multi-component anti-explosion top cap with an internal aluminum terminal disc, and a virgin polypropylene sealing gasket, providing a robust structural foundation for cell researchers and commercial cell manufacturers.

Designed to support high-throughput pilot lines, specialized battery manufacturing, and advanced electrochemistry laboratories, this cell housing kit ensures seamless compatibility with automated grooving, electrolyte filling, and mechanical crimping systems. The surface metallurgy is engineered to resist aggressive non-aqueous liquid electrolytes, preventing metal dissolution and micro-crack formation during cyclic volume expansion. Whether utilized in high-drain electronics, energy storage research, or custom battery pack development, the system guarantees superior batch-to-batch consistency.

Rigorous quality engineering underpins every component, from strict deep-drawing dimensional tolerances to multi-stage surface electroplating. With verified burst pressure activation, ultra-low internal resistance, and robust spot-welding tensile strength, this battery enclosure provides engineering teams with the operational safety and electrochemical stability required for demanding next-generation energy storage applications.

Key Features

• Japanese SPCC Cold-Rolled Steel Substrate: Precision-drawn from premium 0.3 mm Japanese SPCC steel, providing uniform tensile strength, excellent formability, and structural rigidity against high internal pressure.
• Advanced Dual-Surface Nickel Plating: Features a continuous, high-purity nickel layer (≥ 2.5 μm on the can wall, 4–6 μm on the top cap) that prevents electrolyte corrosion, resists oxidation, and eliminates delamination during mechanical processing.
• Precision Anti-Explosion Safety Cap: Integrated pressure relief mechanism accurately actuates at 2.7 ± 0.3 MPa, providing rapid, controlled degassing during thermal runaway or abnormal overcharge without catastrophic housing rupture.
• Low Contact Resistance Architecture: Engineered terminal geometry delivers finished cap internal resistance of ≤ 0.6 mΩ, minimizing internal voltage drop and supporting high-rate continuous discharge.
• High-Integrity Spot Welding Interface: Optimized metallographic composition ensures clean, spark-free resistance welding to current collectors with a post-weld tensile joint strength exceeding 5 kg.
• Crack-Resistant Grooving and Sealing: Ductile electroplated coating allows smooth radial grooving and aggressive final edge rolling without cracking, peeling, or micro-fracturing along the crimp seam.
• Virgin Polymer Sealing Gasket: Injection-molded from pure, additive-free white polypropylene (PP) to eliminate chemical leaching, provide superior dielectric insulation, and maintain an airtight hermetic seal across broad operating temperatures.
• Pristine Surface Finish: Free of drawing striations, surface burrs, pinholes, or base unevenness, ensuring perfect cylindrical alignment and uniform electrode jellyroll insertion.

Applications

Technical Specifications

Why Choose This Product

• Exceptional Raw Material Purity: Built exclusively from genuine Japanese SPCC steel, providing superior elongation and wall-thickness consistency that prevent canister cracking during aggressive high-speed deep drawing.
• Hermetic Crimp Reliability: The combination of ductile multi-micron nickel electroplating and virgin PP gasket prevents electrolyte vapor transmission, ensuring consistent pressure retention over multi-year operational lifetimes.
• Optimized for High-Yield Assembly: Flawless can mouth geometry eliminates edge burrs and deformation, preventing separator puncture during automated jellyroll loading and reducing line downtime.
• Rigorous Multi-Stage Quality Assurance: Every production batch undergoes comprehensive salt-spray testing, burst-pressure qualification, and mechanical pull-testing to guarantee complete compliance with industrial safety protocols.
• Direct Engineering Support: Backed by comprehensive technical assistance covering grooving tool geometry, crimping die dimensions, and spot-welding parameter optimization.

Contact our technical sales team today to request material test reports, dimensional drawings, or volume-tiered quotations for your pilot line and production needs.

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