A solar cell and photovoltaic module without a main grid

By setting up an interconnection and overlapping structure in the gridless solar cell, the problems of broken grids and poor contact are solved by using the thickened overlapping segments and the interconnection and overlapping structure composed of connecting grid lines, thereby improving the current collection capability and photovoltaic module efficiency.

CN224356575UActive Publication Date: 2026-06-12TONGHE NEW ENERGY (JINTANG) CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
TONGHE NEW ENERGY (JINTANG) CO LTD
Filing Date
2025-04-23
Publication Date
2026-06-12

AI Technical Summary

⚠Technical Problem

In gridless solar cells, the current transmission loss increases when the grid breaks or when there is poor contact with the conductive wire, leading to a decrease in the efficiency of the photovoltaic module.

⚗Method used

Connecting grid lines are set between the fine grids to form an interconnected overlapping structure. The current collection capability of the fine grids is optimized by the interconnected overlapping structure composed of thickened overlapping sections and connecting grid lines, the contact area is increased and grid breakage prevention is achieved.

🎯Benefits of technology

This improves the overlap between the fine grid and the conductive wire, reduces the risk of grid breakage, and improves the efficiency of photovoltaic modules without increasing the shading area too much.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application relates to the technical field of solar cells, in particular to a main-grid-free solar cell and a photovoltaic module. The main-grid-free solar cell comprises a cell body, a plurality of thin grids and connecting grid lines. The cell body has two oppositely arranged cell surfaces. The plurality of thin grids are arranged on at least one cell surface in a spaced manner, and the direction of the spaced arrangement is a first direction. The extension direction of the thin grids is a second direction, and the second direction intersects the first direction. At least two adjacent thin grids each have a plurality of overlapping segments. Each connecting grid line is connected between two adjacent thin grids. The two ends of at least one connecting grid line are respectively connected to the overlapping segments of the two thin grids, and the connecting grid line and the two overlapping segments connected thereto form an interconnecting overlapping structure. The main-grid-free solar cell is provided with the interconnecting overlapping structure, so that the overlapping effect of the thin grids and the conductive wires is better, the risk of thin grid breakage is reduced, and the light-shielding area is not excessively increased when the breakage is prevented.
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