Foldable Tape Adsorption for Battery Cell Weld Packaging

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Solution Overview

Problem

Conventional battery cell packaging devices experience tape meandering and reduced productivity due to manual insulating tape attachment and mechanical defects, leading to weakened adhesive force and increased worker workload.

Innovation Solution

A battery cell packaging device that utilizes a supply part, image acquisition part, adsorption part, and cutting part, with foldable adsorption blocks and image-based control to adjust the adsorption member's position and intimate attachment, preventing tape meandering by aligning edge lines and center lines of the insulating tape and welded portion.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If manual insulating tape attachment is performed, then the worker can attach the tape to both sides of the battery cell end, but the adhesive force weakens and tape detachment occurs due to meandering

Engineering Contradiction:
Improvemanual tape attachment operationVSAvoidadhesive force of insulating tape
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The patent replaces the manual mechanical operation with an automated packaging device that uses adsorption members to hold and position insulating tapes. The device mechanically applies tapes to both sides of the battery cell end simultaneously, eliminating meandering and ensuring consistent adhesive force without manual intervention.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent combines the tape attachment operations for both sides of the battery cell into a single automated process. The packaging device applies insulating tapes to the upper and lower surfaces simultaneously through integrated adsorption members, preventing meandering between tapes and ensuring uniform adhesive force across both sides.

Inventive Principle:
Principle #5Merging (Combining)

2Ease of operation

If manual insulating tape attachment is performed, then the worker can complete the packaging process, but the working hours are longer and productivity is lowered

Engineering Contradiction:
Improvemanual packaging operationVSAvoidwork productivity
Core Design Contradiction:
Ease of operationVSProductivity

Solution Approach 1:

The patent replaces manual packaging operations with an automated packaging device that performs tape attachment, cutting, and positioning mechanically. This substitution dramatically reduces the time required for packaging operations and eliminates the need for manual labor in this process, thereby increasing productivity.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The packaging device is designed to perform the entire insulating tape attachment process autonomously without worker intervention. The device automatically feeds tapes, positions them using adsorption members, applies them to the battery cell, and cuts them to length, making the system self-sufficient and eliminating manual operation time.

Inventive Principle:
Principle #25Self-service

3Productivity

If automated battery cell packaging devices are introduced, then productivity increases, but tape meandering occurs due to mechanical defects in the adsorption process

Engineering Contradiction:
Improveautomated packaging speedVSAvoidpositioning accuracy of insulating tape
Core Design Contradiction:
ProductivityVSManufacturing precision

Solution Approach 1:

The patent replaces the problematic mechanical adsorption system with a refined mechanical system that uses specifically designed adsorption members. These members provide more reliable mechanical attachment of tapes, preventing meandering while maintaining high-speed automated operation. The system substitutes the previous inadequate mechanical grip with an improved mechanical engagement mechanism.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentEP4432458B1Battery cell packaging device
Publication Date: 2026.04.01 LG ENERGY SOLUTION LTD
  • EP4432458B1 patent drawingFigure 1~4
  • EP4432458B1 patent drawingFigure 5~8
  • EP4432458B1 patent drawingFigure 9~12

AI summary

A battery cell packaging device related to one example of the present invention comprises a supply part supplying an insulating tape, an image acquisition part for photographing at least one of the insulating tape or a welded portion, an adsorption part including an adsorption member for adsorbing the supplied insulating tape and packaging the welded portion with the adsorbed insulating tape, and a cutting part for cutting the insulating tape adsorbed on the adsorption member from the supply part, wherein the adsorption member comprises a first adsorption block, and a second adsorption block foldably connected to the first adsorption block.