Flexible Solar Cell Bypass Layout for Lower Weight and Flat Surfaces
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Solution Overview
Problem
The installation of bypass lines in solar cell panels hinders weight reduction and can cause unevenness on the light incidence surface, leading to decreased power generation efficiency due to reduced light incidence.
Innovation Solution
A solar cell configuration that includes a flexible substrate with a bypass diode mounted on it, forming a bypass line for the solar cell panels, which omits the need for a junction box and bus bars, allowing for reduced weight and uniform thickness without surface unevenness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a bypass line including a junction box and bus bars is installed, then the solar cell panel can provide current bypass functionality, but the weight of the entire system increases
Solution Approach 1:
The invention extracts and eliminates the junction box and bus bars from the bypass line configuration. By integrating the bypass diode directly onto the solar cell panel structure, the patent removes unnecessary components that contribute to system weight while preserving the essential current bypass functionality.
Solution Approach 2:
The invention merges the bypass diode mounting function directly into the solar cell panel structure. Instead of using separate junction boxes and bus bars, the bypass diode is integrated onto the panel itself, combining multiple functions into a unified structure that reduces overall system weight.
2Weight of moving object
If the package thickness is reduced to reduce system weight, then weight decreases, but unevenness occurs on the front and back surfaces due to peripheral structures
Solution Approach 1:
The invention applies local quality by positioning the bypass diode at specific locations on the solar cell panel that do not interfere with the uniform thickness of the package. The peripheral structure is designed with localized features that maintain overall surface uniformity while providing necessary electrical bypass functionality.
Solution Approach 2:
The invention resolves the surface unevenness issue by transitioning the bypass diode mounting to a different dimensional arrangement. The diode is positioned and oriented in a manner that allows the package to maintain uniform thickness from front to back surfaces, eliminating the protrusions that would cause light incidence problems.
3Illumination intensity
If unevenness occurs on the light incidence surface, then the amount of light incident on the solar cell panel decreases, but this is a consequence of the peripheral structure
Solution Approach 1:
The invention extracts the source of surface unevenness by reconfiguring the peripheral structure. The bypass diode is positioned and mounted in a way that removes protrusions from the light incidence surface, ensuring uniform thickness and optimal light incidence while maintaining the necessary electrical bypass function.
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 configuration reduces weight and prevents unevenness on the light incidence surface, maintaining efficient light incidence and power generation while improving productivity.
Implementation Method 1
a photovoltaic cell is formed
Implementation Method 2
a bypass line includes a bypass diode disposed in a junction box
Data Source
AI summary
A solar cell according to an embodiment includes at least one first solar cell panel, a flexible substrate, a bypass diode, and a package. The at least one first solar cell panel is disposed with a light receiving surface thereof oriented in a predetermined direction. The flexible substrate is disposed in the vicinity of the at least one first solar cell panel when viewed in the predetermined direction. The flexible substrate forms a bypass line for the at least one first solar cell panel. The bypass diode is mounted on the flexible substrate and is connected to the at least one first solar cell panel in parallel. The package houses the at least one first solar cell panel, the flexible substrate, and the bypass diode. The at least one first solar cell panel is disposed between both ends of the flexible substrate and the bypass diode in the predetermined direction.