Editorial Technical Reference

Filling Nozzle Assembly

This page explains how Filling Nozzle Assembly is classified within Electrical Equipment Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

A precision assembly that controls the dispensing of electrolyte into battery cells during the filling process.

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Product Specifications

Technical details and manufacturing context for Filling Nozzle Assembly

Definition
The Filling Nozzle Assembly is a critical component of the Electrolyte Filling System, responsible for the accurate, controlled, and leak-free transfer of liquid electrolyte from the supply system into individual battery cells. It ensures precise volumetric dosing and prevents contamination or spillage. The assembly is designed for use in electrical equipment manufacturing, specifically in battery production lines. It is a component-level product, meaning it is typically integrated into a larger filling system by original equipment manufacturers or system integrators. The assembly is constructed from materials selected for compatibility with electrolyte and corrosive environments: stainless steel (316L) for the body, fluoropolymers (e.g. PTFE, PFA) for internal seals and linings, and ceramic for wear-resistant components. Key parameters include operating pressure (1.0–1.6 MPa), flow rate (0.5–5.0 L/min, adjustable per cell type), filling accuracy (±0.5% relative to target volume), nozzle diameter (2–8 mm, selected based on cell fill port), operating temperature (10–50°C), seal material (FKM, per ASTM D2000), body material (316L, per ASTM A240), weight (0.3–0.8 kg, depending on configuration), connection thread (G1/4–G1/2, per ISO 228-1), leakage rate (≤0.01 mL/min at rated pressure), cycle life (≥500,000 cycles under normal operating conditions), and IP rating (IP54–IP65, per IEC 60529). These values are reference ranges and must be verified for the specific model and application. The assembly operates under the control of a PLC, which regulates the valve opening and closing to achieve the desired fill volume. It is essential to confirm compatibility with the electrolyte chemistry, cell design, and filling system requirements. Always consult the legal manufacturer or supplier for model-specific specifications and standards compliance.
Working Principle
The assembly connects to the electrolyte supply line. A valve mechanism within the assembly opens to allow pressurized electrolyte to flow through the nozzle tip into the cell. The flow is precisely controlled by the system's PLC based on set volume parameters, after which the valve closes to seal the line. The nozzle tip is positioned over the cell fill port, and the assembly ensures a leak-free seal during the filling process. The valve's opening and closing are timed to deliver the exact volume required, with accuracy maintained by the PLC's feedback control. The assembly is designed to minimize dead volume and prevent contamination, and its materials resist corrosion from the electrolyte.
Common Materials
Stainless Steel (316L), Fluoropolymer (e.g., PTFE, PFA), Ceramic
Technical Parameters
ParameterTypical rangeNotes & selection driver
Flow Rate0.5–5.0 L/minAdjustable per cell type
Filling Accuracy±0.5 %Relative to target volume
Nozzle Diameter2–8 mmSelect based on cell fill port
Operating Temperature10–50 °CElectrolyte viscosity varies with temperature
Seal MaterialFKMResistant to electrolyteASTM D2000
Body Material316LCorrosion resistantASTM A240
Weight0.3–0.8 kgDepends on configuration
Connection ThreadG1/4–G1/2Standard port sizesISO 228-1
Leakage Rate≤0.01 mL/minAt rated pressure
Cycle Life≥500000 cyclesUnder normal operating conditions
IP RatingIP54–IP65Protection against dust and waterIEC 60529

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
  • Nozzle Body/Housing Part
    Main structural component that houses internal parts and provides connection points.
    Material: Stainless Steel
  • Nozzle Tip/Orifice Part
    Precision-machined end piece that directs electrolyte flow into the cell; often replaceable.
    Material: Stainless Steel or Ceramic
  • Solenoid Valve
    Electrically actuated valve that opens/closes to start/stop electrolyte flow.
    Material: Stainless Steel, Fluoropolymer Seals
  • Seals/Gaskets Part
    Ensure leak-proof connections between components and at the cell interface.
    Material: Fluoropolymer (e.g., PTFE, Viton)
  • Sensor Port (optional) Optional Part
    Port for integrating sensors (e.g., pressure, drip) for process monitoring.
    Material: Stainless Steel

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Electrolyte Filling System
View system integration details

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: 0-5 bar
flow rate: 0.1-10 mL/s
temperature: -20°C to 80°C
slurry concentration: Up to 60% solids by weight
Media Compatibility
✓ Lithium-ion battery electrolyte ✓ Aqueous electrolyte solutions ✓ Polymer gel electrolytes
Unsuitable: Highly abrasive slurries with >60% solids content
Sizing Data Required
  • Required flow rate (mL/s)
  • Electrolyte viscosity (cP)
  • Nozzle tip diameter requirement (mm)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Abrasive erosion
Cause: High-velocity flow of particulate-laden fluids causing material wear at critical sealing surfaces and internal passages.
Cavitation
Cause: Rapid pressure drops below fluid vapor pressure, forming and collapsing vapor bubbles that create localized pitting and material fatigue.
Maintenance Indicators
  • Irregular spray pattern or flow deviation from design specifications
  • Unusual vibration or audible knocking during operation
Engineering Tips
  • Implement inline filtration to reduce particulate concentration in process fluids
  • Maintain operating pressure above fluid vapor pressure threshold and avoid sudden pressure drops

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
ANSI B16.5 - Pipe Flanges and Flanged Fittings DIN 11851 - Nozzles for the Food Industry

Quoted from the published standard.

Manufacturing Precision
  • Bore Diameter: +/-0.02mm
  • Surface Flatness: 0.1mm per 100mm
Quality Inspection
  • Dye Penetrant Test for Surface Defects
  • Pressure Test for Leakage (Hydrostatic/Pneumatic)

Manufacturers of Filling Nozzle Assembly

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Frequently Asked Questions

What is the operating pressure range for this filling nozzle assembly?

The reference operating pressure range is 1.0–1.6 MPa. Verify the exact range for your specific model and application with the manufacturer.

What materials are used in the construction?

The body is made of stainless steel 316L (per ASTM A240), seals are made of FKM (per ASTM D2000), and internal components may include fluoropolymers (PTFE, PFA) and ceramic. These materials are chosen for corrosion resistance and compatibility with electrolytes.

How is filling accuracy achieved?

The assembly uses a PLC-controlled valve that opens and closes to deliver a precise volume. The filling accuracy is ±0.5% relative to the target volume. The flow rate is adjustable (0.5–5.0 L/min) depending on the cell type.

What is the expected cycle life?

Under normal operating conditions, the assembly is rated for at least 500,000 cycles. This is a reference value; actual life may vary based on maintenance and operating conditions. Confirm with the supplier.
Data basis: editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Data Basis

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

Preliminary Technical Classification
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