Ribbon Pressing Pin Layout for Dense, Deformation-Free Welding
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Solution Overview
Problem
Conventional pressing jigs for solar cells without bus bars and pad points have sparse pressing pins, leading to inadequate pressing effects and potential deformation of ribbons during welding, especially when the ribbon is clamped and laid.
Innovation Solution
A ribbon pressing device with multiple first and second pressing pin groups, where the first pressing pin units contact the ribbon earlier than the second units, ensuring a dense pressing arrangement and preventing deformation by synchronized pressing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If sparse pressing pins are used in conventional pressing jigs, then the device complexity is reduced, but the pressing effect on the ribbon becomes insufficient
Solution Approach 1:
The pressing device is divided into multiple pressing pin groups (first pressing pin groups and second pressing pin groups) arranged in a matrix pattern. Each group contains multiple pressing pins, creating a segmented structure that increases pressing coverage without significantly increasing overall device complexity. This segmentation allows the pressing force to be distributed across multiple contact points, improving the pressing effect on the ribbon.
Solution Approach 2:
The pressing pins are arranged in a two-dimensional matrix pattern with first pressing pin groups and second pressing pin groups distributed across the pressing surface. This dimensional arrangement increases the pressing coverage area and ensures more uniform pressure distribution on the ribbon, transforming a one-dimensional sparse arrangement into a two-dimensional dense pattern.
2Manufacturing precision
If pressing pins press the ribbon during the laying process, then the pressing effect is improved, but the ribbon may deform
Solution Approach 1:
The first pressing pin groups are positioned to contact the ribbon before the second pressing pin groups during the laying process. This preliminary action allows the ribbon to be gradually pressed into position, preventing sudden deformation while ensuring proper contact with the underlying structure. The staged pressing sequence prepares the ribbon for the subsequent full pressing action.
Solution Approach 2:
The pressing process is divided into two periodic stages: first, the first pressing pin groups contact and press the ribbon, then the second pressing pin groups contact and press the ribbon. This periodic action sequence ensures that the ribbon is pressed in a controlled manner, preventing deformation while achieving the desired pressing effect through multiple phases of pressure application.
3Ease of operation
If the ribbon is clamped and laid with the end lifted, then the laying process is simplified, but the pressing stability deteriorates
Solution Approach 1:
The pressing device employs different pressing pin groups with different characteristics at different locations. The first pressing pin groups are positioned to handle the initial contact and stabilization of the ribbon end, while the second pressing pin groups are positioned to provide additional support and stability during the laying process. This local differentiation of pressing functions maintains stability while allowing ease of operation.
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 device ensures effective pressing without deformation of the ribbon, enhancing the welding process by maintaining a dense pressing arrangement and synchronized pressing action.
Implementation Method 1
an elastic member sleeved on the pressing pin body, where an end of the elastic member abuts against the pressing head, and the other end of the elastic member abuts against the jig body
Data Source
AI summary
A ribbon pressing device includes a jig body, multiple first pressing pin groups, and multiple second pressing pin groups, where the multiple first pressing pin groups are arranged at intervals on the jig body along a first direction, each of the multiple first pressing pin groups includes multiple first pressing pin units arranged at intervals along a second direction, and each of the multiple first pressing pin units is movable relative to the jig body; and the multiple second pressing pin groups are arranged at intervals on the jig body along the first direction, each of the multiple second pressing pin groups includes multiple second pressing pin units arranged at intervals along the second direction, and each of the multiple second pressing pin units is movable relative to the jig body.