Editorial Technical Reference

Cell Housing Assembly

This page explains how Cell Housing Assembly is classified within Computer, Electronic and Optical Product Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

The structural enclosure that contains and protects the internal components of a lithium-ion battery cell.

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Product Specifications

Technical details and manufacturing context for Cell Housing Assembly

Definition
The Cell Housing Assembly is a critical component within the Lithium-Ion Battery Cell Assembly System. It serves as the primary structural and protective enclosure for the cell's internal components, including the electrodes, separator, and electrolyte. The assembly ensures mechanical integrity, provides electrical insulation where required, and often facilitates thermal management and safety features such as venting mechanisms. Constructed from materials such as aluminum alloy, stainless steel, or nickel-plated steel, the housing is designed to withstand mechanical stresses and prevent internal short circuits. Key parameters include nominal capacity (10–100 Ah), nominal voltage (3.2–3.7 V), internal resistance (≤20 mΩ), wall thickness (0.2–0.5 mm), tensile strength (≥300 MPa), operating temperature (-20 to 60 °C), ingress protection (IP54–IP67), material grade (3003–5052), weight (50–200 g), and dimensional tolerance (±0.1 mm). These values are reference ranges and must be verified for the specific model and application. The assembly functions as a sealed or semi-sealed container, physically constraining internal components, maintaining electrode alignment and pressure, and providing interface points for integration into battery modules or packs. Its design is critical for preventing internal short circuits, containing thermal runaway, and withstanding external mechanical stresses. Standards such as IEC 61960, GB/T 26047, ASTM E8, IEC 60068-2-1, IEC 60529, ASTM B209, and ISO 2768-m are referenced for verification and procurement. Always confirm model-specific values and standards with the legal manufacturer or supplier.
Working Principle
The Cell Housing Assembly operates as a sealed or semi-sealed container. It physically constrains the cell's internal components, maintaining electrode alignment and pressure. It provides necessary interface points, such as terminals and safety vents, for integration into battery modules or packs. The design prevents internal short circuits, contains thermal runaway, and withstands external mechanical stresses. The housing also facilitates thermal management by dissipating heat and may include venting mechanisms for pressure relief. Its structural integrity is essential for safe and reliable battery operation.
Common Materials
Aluminum alloy, Stainless steel, Nickel-plated steel
Technical Parameters
ParameterTypical rangeNotes & selection driver
Nominal Capacity10–100 AhDetermines energy storage capabilityIEC 61960
Nominal Voltage3.2–3.7 VTypical for Li-ion chemistriesIEC 61960
Internal Resistance≤20 Lower is better for power deliveryIEC 61960
Wall Thickness0.2–0.5 mmAffects mechanical strength and weightGB/T 26047
Tensile Strength≥300 MPaEnsures structural integrityASTM E8
Operating Temperature-20–60 °COutside range may degrade performanceIEC 60068-2-1
Ingress ProtectionIP54–IP67Protects against dust and waterIEC 60529
Material Grade3003–5052Aluminum alloys for lightweight and corrosion resistanceASTM B209
Weight50–200 gAffects energy density
Dimensional Tolerance±0.1 mmEnsures proper fit and sealingISO 2768-m

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM
  • Housing Can (or Pouch) Part
    Forms the main sealed body of the enclosure.
    Material: Aluminum alloy or laminated polymer film
  • Cap/Lid Assembly
    Seals the open end of the can, often incorporating terminals and safety vents.
    Material: Aluminum alloy or steel
  • Positive Terminal Part
    Electrical connection point for the cell's cathode.
    Material: Aluminum or aluminum alloy
  • Negative Terminal Part
    Electrical connection point for the cell's anode.
    Material: Copper or nickel-plated steel
  • Safety Vent (CID)
    Pressure relief device that opens at a specified pressure to prevent rupture.
    Material: Stainless steel or aluminum
  • Insulating Gasket/Seal Part
    Provides electrical insulation and hermetic seal between the can and cap.
    Material: Polypropylene (PP), Polyphenylene Sulfide (PPS), or other high-temperature polymers

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: 0 to 5 bar internal pressure, 0 to 2 bar external pressure differential
other spec: Electrolyte compatibility: organic carbonate-based lithium salts, Slurry concentration: N/A (solid assembly), Flow rate: N/A (static enclosure)
temperature: -40°C to 85°C (operational), -60°C to 150°C (storage)
Media Compatibility
✓ Lithium hexafluorophosphate (LiPF6) electrolyte ✓ N-Methyl-2-pyrrolidone (NMP) solvent systems ✓ Aluminum and copper current collectors
Unsuitable: Aqueous electrolytes or high-moisture environments (>1000 ppm H2O)
Sizing Data Required
  • Cell dimensions (length × width × height)
  • Electrode stack thickness and number of layers
  • Required internal volume for electrolyte and gas expansion

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Fatigue cracking at weld joints
Cause: Cyclic thermal and mechanical stresses from assembly/disassembly cycles, combined with vibration from adjacent equipment, leading to crack initiation and propagation at stress concentration points.
Corrosion and material degradation
Cause: Exposure to process fluids, atmospheric moisture, or chemical residues, exacerbated by improper material selection, inadequate surface protection, or contamination from adjacent components.
Maintenance Indicators
  • Visible cracks, discoloration, or material loss at weld seams or mounting points
  • Unusual vibration, rattling noises, or misalignment during operation indicating structural compromise
Engineering Tips
  • Implement regular non-destructive testing (e.g., ultrasonic or dye penetrant inspection) of critical welds and stress points to detect early-stage defects before catastrophic failure.
  • Apply protective coatings or cathodic protection where applicable, and ensure proper material compatibility with process environment through corrosion resistance analysis during design phase.

Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.

Compliance & Manufacturing Standards

Applicable Standards
ASTM E8/E8M - Standard Test Methods for Tension Testing of Metallic Materials CE Marking - Conformity with EU Directives (e.g., Machinery Directive 2006/42/EC)

Quoted from the published standard.

Manufacturing Precision
  • Bore Diameter: +/-0.025 mm
  • Surface Flatness: 0.05 mm per 100 mm
Quality Inspection
  • Dimensional Verification with CMM (Coordinate Measuring Machine)
  • Leak Test (Helium or Pressure Decay Method)

Manufacturers of Cell Housing Assembly

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Frequently Asked Questions

What is the primary function of the Cell Housing Assembly?

The primary function is to provide structural support and protection for the internal components of a lithium-ion battery cell, including electrodes, separator, and electrolyte. It ensures mechanical integrity, electrical insulation, and facilitates thermal management and safety features.

What materials are commonly used for the Cell Housing Assembly?

Common materials include aluminum alloy, stainless steel, and nickel-plated steel. The choice depends on factors such as weight, corrosion resistance, and mechanical strength requirements.

What are typical parameters for the Cell Housing Assembly?

Typical parameters include nominal capacity (10–100 Ah), nominal voltage (3.2–3.7 V), internal resistance (≤20 mΩ), wall thickness (0.2–0.5 mm), tensile strength (≥300 MPa), operating temperature (-20 to 60 °C), ingress protection (IP54–IP67), material grade (3003–5052), weight (50–200 g), and dimensional tolerance (±0.1 mm). These are reference ranges and must be confirmed for the specific model.

Which standards are relevant for the Cell Housing Assembly?

Relevant standards include IEC 61960 for capacity and voltage, GB/T 26047 for wall thickness, ASTM E8 for tensile strength, IEC 60068-2-1 for operating temperature, IEC 60529 for ingress protection, ASTM B209 for material grade, and ISO 2768-m for dimensional tolerance. Always verify compliance with the manufacturer.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification
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