Solar Battery Module Bus Bar Routing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Solar cell panels face durability and reliability issues due to the formation of holes for bus bars, which can lead to damage and bending as panel sizes increase, and existing methods to enhance thickness result in increased weight and complexity.
Innovation Solution
A solar cell module design where the bus bar extends from the front surface to the rear surface through the side surface without forming holes in the support substrate, and is surrounded by a thermally molded resin cover member to improve durability and prevent moisture penetration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If holes are formed in the support substrate to extend the bus bar from front surface to rear surface, then electrical connection is achieved, but durability and reliability of the panel deteriorates
Solution Approach 1:
The bus bar is extended from the front surface to the rear surface by changing its path to follow the side surface of the panel, rather than passing through holes in the substrate. This dimensional change eliminates the need for penetrating holes while maintaining electrical connection, thereby improving panel durability and reliability.
2Strength
If the thickness of solar cell panel is increased to prevent bending or damage, then structural strength is improved, but weight increases and manufacturing process becomes complex
Solution Approach 1:
Instead of increasing panel thickness to improve strength, the invention routes the bus bar along the side surface dimension, allowing the bus bar to extend from front to rear surface without requiring increased substrate thickness. This maintains structural integrity while avoiding additional weight and manufacturing complexity.
3Reliability
If the bus bar extends through holes in the support substrate, then electrical connection is achieved, but moisture penetration risk increases and reliability decreases
Solution Approach 1:
The bus bar is routed along the side surface of the panel to extend from the front surface to the rear surface, eliminating the need for holes through the support substrate. This dimensional change prevents moisture penetration pathways while maintaining electrical connection functionality.
Solution Approach 2:
A cover member is provided to surround the bus bar along the side surface, creating a protective enclosure that prevents moisture penetration while allowing the bus bar to maintain its extended path from front to rear surface.
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 design enhances the durability and reliability of solar cell panels by eliminating the need for holes, preventing damage and bending, while also minimizing the size of connecting members and improving moisture resistance.
Implementation Method 1
a cover member surrounding the bus bar
Data Source
AI summary
Disclosed is a solar cell module. The solar cell module includes a support substrate; a plurality of solar cells on a front surface of the support substrate; a bus bar electrically connected to the solar cells; and a cover member surrounding the bus bar, wherein the bus bar extends along an edge of the front surface of the support substrate to an edge of a rear surface of the support surface.