Mono Cell Adhesive Positioning for Thickness Control
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Solution Overview
Problem
Existing methods for manufacturing mono cells with sheet-like separators between positive and negative electrodes result in excessive thickness due to overlapping adhesive application.
Innovation Solution
Adhesives are strategically positioned on the surfaces of the separator such that they do not overlap when viewed in the lamination direction, ensuring even bonding without increasing the thickness of the mono cell.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If adhesives are applied to both sides of the separator at the same positions, then bonding between electrodes and separator is achieved, but the thickness of the mono cell becomes excessively large
Solution Approach 1:
The patent applies adhesives at different positions on opposite surfaces of the separator, effectively using spatial arrangement in the lateral dimension to prevent thickness accumulation. By offsetting adhesive positions between the first and second surfaces of the separator, the adhesive layers do not overlap in the lamination direction, thus maintaining thin cell thickness while ensuring adequate bonding strength.
2Strength
If adhesives are disposed in a mesh shape over bonding surfaces, then bonding coverage is improved, but adhesive overlap between positive and negative electrode sides increases thickness
Solution Approach 1:
The patent implements local quality by applying adhesives at specific offset positions rather than uniform coverage. The first adhesive on the first surface and the second adhesive on the second surface are positioned to correspond to different locations, creating localized bonding zones that prevent overlap. This selective positioning maintains bonding effectiveness while avoiding thickness increase from overlapping adhesive layers.
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
This approach prevents excessive thickness in the mono cell by ensuring non-overlapping adhesive application, maintaining a consistent and efficient structure.
Implementation Method 1
adhesives are disposed such that adhesives on one surface of the separator do not overlap adhesives on the other surface of the separator
Data Source
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AI summary
Provided is a method for manufacturing a mono cell in which a sheet-like negative electrode, a sheet-like separator and a sheet-like positive electrode are laminated in this order. In this manufacturing method, adhesives are disposed at a plurality of points on an upper surface of the negative electrode, then, the negative electrode is bonded to a lower surface of the separator, and furthermore, adhesives are disposed at a plurality of points on a lower surface of the positive electrode, then the positive electrode is bonded to an upper surface of the separator. When viewed in the lamination direction of the mono cell, the positions of the adhesives and the positions of the adhesives do not overlap each other. Then, adhesives are disposed at a plurality of points on an upper surface of the positive electrode, and a lower surface of a separator is bonded to the upper surface of the positive electrode.