Diode Cable Integration for Solar Module Shading Protection
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Solution Overview
Problem
Conventional solar module production is complex and costly, particularly due to the need for integrated freewheeling diodes to prevent damage from shading or module defects, which complicates the connection process and increases production expenses.
Innovation Solution
A solar module arrangement that includes a freewheeling diode integrated into a diode cable, allowing for easy connection between junction boxes without requiring special knowledge, enabling retrofitting and reducing production costs by allowing separate certification of the diode cable.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a freewheeling diode is integrated into the solar module during production, then the solar module is protected against damage from shading or defects, but the production complexity and costs increase
Solution Approach 1:
The patent separates the freewheeling diode from the solar module itself, placing it in a dedicated diode cable instead. This segmentation allows the solar module to be produced without integrated diodes, simplifying production, while the diode protection function remains available through the separate cable component that can be added during installation or retrofitting.
Solution Approach 2:
The freewheeling diode is extracted from the solar module structure and placed in an external diode cable. This extraction eliminates the need for complex integration processes during solar module production, reducing manufacturing complexity and costs, while maintaining the protective function through the external component.
2Reliability
If a freewheeling diode is integrated into the solar module, then protection against shading damage is provided, but production costs increase
Solution Approach 1:
By segmenting the freewheeling diode into a separate diode cable component, the patent enables solar modules to be produced without the added cost of integrated diodes. The diode protection function is provided separately through the cable, allowing manufacturers to reduce production costs while still offering protection as an optional addition during installation.
Solution Approach 2:
The freewheeling diode is extracted from the solar module production process and placed in an external cable assembly. This extraction eliminates the additional manufacturing steps and material costs associated with integrating diodes during solar module production, thereby reducing production costs while maintaining the protective function through the external component.
3Reliability
If the solar module structure is changed to integrate freewheeling diodes, then protection function is improved, but adaptability to different conditions is reduced
Solution Approach 1:
The patent makes the freewheeling diode configuration dynamic and flexible by placing it in a separate diode cable that can be added, removed, or configured based on specific installation conditions. This allows the system to adapt to different shading scenarios and operational requirements without being constrained by a fixed integrated structure, enhancing versatility while maintaining protection when needed.
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
Simplifies the production and retrofitting of solar modules by allowing flexible and cost-effective integration of freewheeling diodes, reducing production costs and enabling adaptation to changing shading conditions without structural changes to the connection cables.
Implementation Method 1
solar module for photovoltaic energy generation
Implementation Method 2
The two connection contacts of the solar module are electrically connected to one another via the reverse-biased freewheeling diode
Data Source
Figure 1
Figure 2
AI summary
The invention relates to a solar module array, comprising a solar module for photovoltaic energy generation, a connection housing connected to the solar module for connecting the solar module to an electric load, and a free-wheeling diode connected antiparallel to the solar module, wherein the free-wheeling diode is contained in a diode cable connected to the connection housing and the solar module. The invention further relates to a solar module array, comprising a solar module for photovoltaic energy generation, a connection housing connected to the solar module for connecting the solar module to an electric load, a second connection housing connected to the solar module for connecting the solar module to an electric load, and a free-wheeling diode connected antiparallel to the solar module, wherein the free-wheeling diode is contained in a diode cable electrically connecting the two connection housings to one another. The invention further relates to such a diode cable.