A solar cell module having a topological structure

Abstract

The invention discloses a solar cell module having a topological structure. The solar cell module includes a plurality of battery pieces and wires, wherein the anode of one battery piece is connected to the cathode of another battery piece by the wire 1, the anode of the second battery piece is connected to the cathode of one next battery piece by the wire 1, and the battery pieces are sequentially connected in series to form a battery piece group. Then, the same electrodes in the same rank of 2-4 battery pieces in the battery piece group are connected together by the wire 2, all rows of the battery pieces are sequentially connected in parallel to form battery piece blocks, and the battery piece blocks are in series connection through a connecting wire to form a complete circuit. Meanwhile, the anode and cathode are guided from the wire 2, and the wire 3 is guided from the connecting wire to be connected to a bypass diode along with the wire 2. A novel electrical connection mode is employed, the number of current loops in the series circuit is increased, and the impact of defect battery pieces on the whole series circuit is mitigated. The same equipment such as inverter can be used by the solar cell module and conventional components, so the solar cell module is highly applicable.

Description

technical field [0001] The invention belongs to the field of solar photovoltaic technology, and relates to an electrical connection method of a solar cell assembly, in particular to a solar cell assembly with a topological structure. Background technique [0002] Solar energy is a clean, efficient and inexhaustible new energy source. It is one of the important renewable energy sources and an important part of the sustainable development strategy of governments in resource utilization. One of the important methods, its noise-free, maintenance-free, and emission-free advantages are gradually becoming popular. At present, crystalline silicon solar cells are mainly used in photovoltaic power generation, mainly because silicon materials have extremely rich reserves in the earth's crust. Photovoltaic power generation technology is relatively mature, with low cost and relatively high conversion efficiency compared with other types of commercial batteries. [0003] Crystalline ...

AI Technical Summary

Problems solved by technology

[0003] Crystalline silicon solar cells must be packaged before they can resist the erosion of the external environment. At present, the battery package is mainly in series structure, mainly to increase its output voltage. If a cell in the series circuit fails, it will affect The output of the entire series circuit. For this reason, when the battery is packaged into a component, a certain number of bypass diodes are generally connected in parallel to reduce the impact of the faulty battery on the entire series circuit. When the failure of the cell itself affects its power generation performance, the bypass diode starts to bypass the part of the cell it protects. Although this reduces the impact of the faulty cell on the entire series array, other cells are in the same bypass The normal battery slices in the diode protection range are also bypassed. Although this method of protecting the entire series circuit by sacrificing a small part of the battery slices increases the reliability of the entire system, it wastes the output power of some of the battery slices.

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