Movable Nozzle Member for Uniform Electrode Plate Drying

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Solution Overview

Problem

Existing drying processes for secondary battery electrode plates are inefficient and result in uneven drying due to varying widths, leading to residual moisture and impurities, which affect battery performance and life.

Innovation Solution

A nozzle member with movable discharge parts and uniform distribution of dry material through adjustable openings, ensuring consistent drying across varying electrode plate widths without the need for multiple nozzle configurations.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If a fixed nozzle configuration is used for drying electrode plates, then the nozzle structure is simple, but the drying uniformity deteriorates due to varying electrode plate widths

Engineering Contradiction:
Improvedrying uniformityVSAvoidnozzle configuration complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The discharge part of the nozzle member is designed to be movable relative to the frame, allowing dynamic adjustment of the discharge position. This enables the nozzle to adapt to varying electrode plate widths while maintaining consistent drying uniformity, resolving the contradiction between drying precision and device complexity.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The movable discharge part allows a single nozzle configuration to handle multiple electrode plate widths. By adjusting the discharge position, the same nozzle structure can universally accommodate different plate sizes, eliminating the need for multiple fixed nozzle configurations and maintaining drying uniformity across variations.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Manufacturing precision

If multiple nozzle configurations are used to accommodate varying electrode plate widths, then drying uniformity improves, but device complexity and manufacturing costs increase

Engineering Contradiction:
Improvedrying uniformityVSAvoidmanufacturing cost
Core Design Contradiction:
Manufacturing precisionVSEase of manufacture

Solution Approach 1:

A single nozzle member with a movable discharge part replaces multiple fixed nozzle configurations. This universal design maintains drying uniformity across different electrode plate widths while significantly reducing manufacturing costs by eliminating the need to produce and store multiple nozzle types.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The movable discharge part provides dynamic adaptability, allowing one nozzle structure to perform the function of multiple fixed nozzles. This reduces manufacturing complexity and cost while maintaining the drying uniformity that would otherwise require multiple specialized nozzle configurations.

Inventive Principle:
Principle #15Dynamics

3Productivity

If the discharge part is fixed, then the nozzle structure is simple, but drying efficiency deteriorates due to inability to adapt to different plate widths

Engineering Contradiction:
Improvedrying efficiencyVSAvoidnozzle structure complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The discharge part is designed to move relative to the frame, enabling the nozzle to adapt its position to different electrode plate widths. This dynamic capability improves drying efficiency by ensuring optimal coverage across varying plate sizes while adding minimal structural complexity through a straightforward movable joint design.

Inventive Principle:
Principle #15Dynamics

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The solution enhances drying efficiency and uniformity, reducing process time and costs by allowing a single nozzle configuration to adapt to different electrode plate widths, thereby improving battery performance and manufacturing efficiency.

Implementation Method 1

Moisture or impurities on the active material layer may be removed by the drying process

Methodology Applied
Scientific EffectEvaporation: Evaporation

Data Source

PatentUS20250300157A1Nozzle member and drying device including the same
Publication Date: 2025.09.25 SAMSUNG SDI CO LTD
  • US20250300157A1 patent drawing
  • US20250300157A1 patent drawing
  • US20250300157A1 patent drawing

AI summary

A nozzle member and a drying device for manufacturing a secondary battery. The nozzle member can uniformly dry even in regions where the width of the electrode plate changes by utilizing a number of nozzle parts having the same shape, and a drying device including the same. The nozzle member includes a number of nozzle parts spaced apart from each other, and each of the nozzle parts includes a frame; an inlet part connected to the frame and into which the dry material is configured to flow; a discharge part in contact with the frame and configured to discharge the dry material; and a flow part between the inlet part and the discharge part. The frame includes an insertion part, the inlet part is fixed to the frame, and the discharge part is movable.