Photovoltaic module and preparation method thereof

Abstract

The invention discloses a photovoltaic module and a preparation method thereof. The photovoltaic module comprises at least two cell strings connected in parallel, a first jumper, a first auxiliary conductor and a second auxiliary conductor. Each cell string comprises a plurality of cells which are connected in series. Each cell string comprises a first sub-string and a second sub-string which areconnected in series, and the connection point of the first sub-string and the second sub-string is a string connection point. All the string connection points are connected with the first jumper. Eachfirst sub-string is reversely connected with a first diode in parallel through the first jumper and the first auxiliary conductor. Each second sub-string is reversely connected with a second diode inparallel through the first jumper and the second auxiliary conductor. Each cell is one third of a cell formed by cutting a whole cell. At least one of the first diodes and the second diodes is arranged in the same junction box. According to the technical scheme provided by the embodiment of the invention, the problem that the diodes can be easily and reversely broken down when the number of cellsin the photovoltaic module is increased is avoided.

Description

technical field [0001] Embodiments of the present invention relate to the field of photovoltaic power generation, and in particular to a photovoltaic module and a preparation method thereof. Background technique [0002] With the continuous development of photovoltaic power generation technology, photovoltaic modules are gradually being used in various fields of social life and are favored by users. [0003] figure 1 It is a schematic circuit diagram of a photovoltaic module in the prior art. Such as figure 1 As shown, the photovoltaic module in the prior art includes 12 battery strings 1, every two battery strings 1 form a series structure 2, every two series structures 2 form a parallel structure 3, and each parallel structure 3 is connected in series, wherein, each A battery string 1 is composed of a plurality of battery slices 5 connected in series, and two series structures 2 in each parallel structure 3 are antiparallel connected with a diode 4 . figure 1 In the a...

AI Technical Summary

Problems solved by technology

At this time, the number of battery slices 8 protected by each diode 9 is the number of battery slices 8 in the parallel structure 7, that is, the total number of battery slices 8 in the two battery strings 6. Therefore, the number of battery slices 8 in the battery string 6 is limited by The limitation of the reverse withstand voltage capability of the diode 9 prevents the increase of the total number of cells 8 in the photovoltaic module, which affects the improvement of the performance of the photovoltaic module

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