Full series-parallel stacked photovoltaic module and manufacturing method thereof

Abstract

The invention discloses a full series-parallel stacked photovoltaic module and a manufacturing method thereof and belongs to the technical field of photovoltaic power generation. Through the staggeredarrangement of two adjacent rows of cells, each cell is connected in parallel with cells in the same row and is connected in series with cells in the same column, so that all photovoltaic modules form a mesh-like hybrid circuit connection manner, and all the photovoltaic modules share a conductive channel. When a cell unit is blocked or damaged, an unblocked cell unit near the blocked battery unit can drain current through an adjacent parallel node, therefore, the blocking loss is limited in a small range near the blocked unit, the module spot effect is eliminated, the power loss caused by local blocking is reduced, and improves the power generation capacity of an entire system is improved.

Description

technical field [0001] The invention belongs to the technical field of photovoltaic power generation, and in particular relates to a full series-parallel shingled photovoltaic module and a manufacturing method thereof. Background technique [0002] Photovoltaic modules are the core part of solar power generation systems. Currently, photovoltaic modules mainly have the following problems: [0003] 1. The cells in the photovoltaic module are connected in series, a small partial shading will cause a large power loss, and cause hot spots to accelerate the aging of the module. This problem is more obvious in the double-sided power generation photovoltaic module; [0004] 2. Photovoltaic modules are prone to cracks in solar cells during production, transportation and use. The cracked solar cells in conventional photovoltaic modules will cause the reduction of the current channel in the photovoltaic module and the electrical failure between solar cells. matching, resulting in a re...

AI Technical Summary

Problems solved by technology

[0003] 1. The cells in the photovoltaic module are connected in series, a small partial shading will cause a large power loss, and cause hot spots to accelerate the aging of the module. This problem is more obvious in the double-sided power generation photovoltaic module;

[0004] 2. Photovoltaic modules are prone to cracks in solar cells during production, transportation and use. The cracked solar cells in conventional photovoltaic modules will cause the reduction of the current channel in the photovoltaic module and the electrical failure between solar cells. matching, resulting in a reduction in component power;

[0005] 3. Ordinary shingled modules realize partial parallel connection of cells by adding partial parallel bus bars on the back of the cells, which increases the module’s ability to resist local shading and local cracks to a certain extent, but this method consumes a lot of materials, and at the same time the back The added bus bars will seriously affect the power generation capability on the back of the photovoltaic module, and cannot be applied to double-sided power generation photovoltaic modules

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