Multi-Bobbin Separator Supply for Continuous Battery Production

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Solution Overview

Problem

The process of manufacturing secondary batteries is prolonged due to the need for replacing a completely used separator, which requires additional time for replenishment.

Innovation Solution

A separator supply apparatus featuring a bobbin support member with multiple bobbin holders that revolve around intersecting shafts, allowing for quick replacement and supplementation of separators during the manufacturing process.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If a single separator is used in the manufacturing process, then the device structure is simple, but the manufacturing time increases due to required replacement interruptions

Engineering Contradiction:
Improvemanufacturing speedVSAvoidstructure complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The separator supply system is segmented into multiple independent bobbin holders (first bobbin holder, second bobbin holder, etc.), each capable of storing a separate separator roll. This segmentation allows one separator to be used while another is being replaced, eliminating production interruptions and improving manufacturing speed without requiring complex coordination mechanisms.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Multiple bobbin holders are prepared in advance with different separators loaded before the manufacturing process begins. When the current separator is depleted, a pre-loaded separator is already available for immediate replacement, eliminating waiting time and maintaining continuous production flow.

Inventive Principle:
Principle #10Preliminary action

2Loss of time

If multiple bobbin holders are introduced to enable quick replacement, then the manufacturing efficiency improves, but the device structure becomes more complex

Engineering Contradiction:
Improveseparator replacement timeVSAvoidbobbin holder configuration
Core Design Contradiction:
Loss of timeVSDevice complexity

Solution Approach 1:

The bobbin holders are arranged to be movable relative to each other along the separation direction, allowing dynamic repositioning during the separator replacement process. This dynamic configuration enables smooth transition between different separators without requiring complex mechanical intervention, reducing replacement time while keeping the overall structure manageable.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The multiple bobbin holders are arranged in a spatial configuration along the separation direction rather than requiring complex lateral movement mechanisms. This dimensional arrangement simplifies the replacement process by allowing sequential access to different separators along a linear path, reducing the complexity of the replacement mechanism.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

3Reliability

If separators are replaced frequently to maintain production quality, then the product quality is maintained, but the manufacturing continuity is interrupted

Engineering Contradiction:
Improveseparator quality consistencyVSAvoidproduction continuity
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

Multiple separators are loaded onto different bobbin holders in advance before the manufacturing process begins. This preliminary preparation ensures that when one separator reaches its quality limit or is depleted, another pre-loaded separator is immediately available for replacement, maintaining both quality consistency and production continuity without interruptions.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The multi-bobbin holder system enables continuous separator supply by having multiple separators available simultaneously. While one separator is being used, another can be prepared or is already in position for immediate replacement, ensuring the useful action of separator supply continues without interruption and maintaining both quality and productivity.

Inventive Principle:
Principle #20Continuity of useful action

Data Source

PatentUS20260018647A1Separator supply apparatus
Publication Date: 2026.01.15 SK ON CO LTD
  • US20260018647A1 patent drawing
  • US20260018647A1 patent drawing
  • US20260018647A1 patent drawing

AI summary

A separator supply apparatus for supplying a separator includes a bobbin support member including a first surface facing a supply position, a position in which a supplied separator is disposed, and a second surface opposite to the first surface, a plurality of bobbin holders disposed on the first surface and the second surface respectively and supporting the separators, at least one of which is disposed in the supply position, a first shaft disposed on the bobbin support member in a direction penetrating the first and second surfaces, and a second shaft providing a rotational axis to the bobbin support member. The plurality of bobbin holders revolve around at least one of the first or second shaft and are provided such that a bobbin holder disposed in the supply position is changed.