Solar cell module, and production method for solar cell module
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Solution Overview
Problem
Existing solar cell modules face challenges in achieving accurate and strong fixation of frame members due to the requirement of precise placement of corner pieces, leading to potential disengagement and insufficient structural strength.
Innovation Solution
The use of a corner member inserted into the hollow cross-sectional portion of frame members to press and fix the frame members, allowing for secure fixation without high accuracy requirements, utilizing a rivet jig to form rivet sections for enhanced stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If corner pieces are pressed into frame members to fix the frame members, then the frame members can be joined together, but high manufacturing precision is required to accurately provide frame members at predetermined positions
Solution Approach 1:
The corner member acts as an intermediary component between frame members. It includes a pressing portion that press-fits into the hollow cross-sectional portion of the frame member, and a protruding portion that extends outward to engage with or be engaged by other frame members. This intermediary structure absorbs positioning tolerances and enables assembly without requiring high manufacturing precision.
Solution Approach 2:
The corner member is inserted into the hollow cross-sectional portion of the frame member, creating a nested configuration. The pressing portion of the corner member fits inside the hollow space of the frame member, while the protruding portion extends outward. This nesting arrangement allows the corner member to securely connect frame members while accommodating dimensional variations.
2Ease of manufacture
If corner pieces are pressed into frame members, then frame members can be connected, but the connection strength may be insufficient if the corner piece becomes disengaged
Solution Approach 1:
The corner member serves as a robust intermediary that provides multiple engagement points. The pressing portion creates a secure press-fit connection inside the frame member's hollow portion, while the protruding portion provides additional engagement capability. This dual-engagement design ensures strong connection strength and prevents disengagement under load.
Solution Approach 2:
The corner member is divided into functionally distinct segments: the pressing portion for internal engagement with the frame member's hollow cross-section, and the protruding portion for external engagement with other frame members. This segmentation allows each part to perform its specific function optimally, ensuring both ease of assembly and strong connection.
3Reliability
If frame members are fixed using corner pieces pressed into hollow cross-sectional portions, then secure fixation is achieved, but the device complexity increases
Solution Approach 1:
The corner member performs multiple functions within a single component: it provides structural reinforcement at the corner joint, creates a press-fit connection through its pressing portion, and enables connection between frame members through its protruding portion. This multi-functionality reduces the need for separate components, thereby limiting the increase in device complexity while maintaining high fixation reliability.
Data Source
Figure 1(a)~1(c)
Figure 2
Figure 3
AI summary
A solar cell module (10) is configured from a solar cell panel (11), and a frame structural body (12). The frame structural body (12) is provided with: a plurality of frame members (22, 23) which are provided to peripheral edges of the solar cell panel (11), and which have a cross-sectional shape having a hollow portion; corner members (25) which are provided in the hollow portions; holding sections which are provided in the hollow portions, and which hold the corner members (25) ; and a plurality of formed rivet sections which apply pressure to the frame members (22, 23).