Photovoltaic conductive backboard and photovoltaic cell module

Abstract

The invention discloses a photovoltaic conductive backboard and a photovoltaic cell module. The photovoltaic cell module includes a photovoltaic cell and a backboard which is coordinated with the photovoltaic cell, wherein the backboard includes a board body, and also includes a plurality of first conductive structures which are composited with one end of the inner side of the board body and are distributed at intervals, and a plurality of second conductive structures which are composited with the other end of the inner side of the board body and are distributed at intervals; electrodes at twoends of each cell string introduce solder strips to connect and communicate with the first conductive structures and the second conductive structures corresponding to the positions at two ends of theboard body; and the first conductive structures and / or the second conductive structures are each provided with an output electrode. The photovoltaic cell module composites the conductive layers withthe backboard body, connects the cell strings which have been connected in series or in parallel to the backboard through electrode conductive connection ports on the backboard, connects a bypass diode to connect the conductive layers through layout of each conductive structure, and is connected with the bypass diode in parallel while the cell strings are connected to the conductive structures torealize line connection of the cell strings.

Description

technical field [0001] The invention belongs to the technical field of photovoltaic cells, and in particular relates to a photovoltaic conductive backplane and a photovoltaic cell assembly. Background technique [0002] The circuit of a conventional whole battery module is usually connected with a bypass diode 9 in parallel for every two strings of batteries. For a typical circuit diagram, see figure 1 , after the single battery strings are connected in series, the ends of the battery strings are connected and welded, see figure 2 , and at the same time connect to the junction box through the electrode lead-out wire to realize the parallel connection of the battery string and the bypass diode 9. When one (or more) batteries in a string of batteries protected by the bypass diode 9 are shaded, usually when the completely shaded area reaches more than 50% of the area of ​​a single battery, the bypass diode 9 will start, and in the assembly or assembly 1 / 3 of the individual c...

AI Technical Summary

Problems solved by technology

Since the two ends of the battery string are connected in parallel to the two ends of the bypass diode 9, the bus bar welded at one end of the battery string usually needs to be connected in parallel to one end of the bypass diode 9 through a jumper on the back of the module, so there are at least two jumpers in the module. The line is connected in parallel to the bypass diode 9, which virtually increases the difficulty of production during the assembly process and increases the risk of battery fragments and cracks

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