Junction box photovoltaic module and manufacturing method thereof

Abstract

The invention discloses a junction box photovoltaic module and a manufacturing method thereof. A first junction box, a second junction box, a third junction box, a fourth junction box, a fifth junction box and a sixth junction box are respectively arranged on the back surface of a photovoltaic cell panel, the first junction box comprises a negative electrode output end and a first bypass diode, and the fourth junction box comprises a negative electrode output end and a second bypass diode. The second junction box comprises a third bypass diode, the fifth junction box comprises a fourth bypassdiode, and the third junction box comprises a positive electrode output end and a fifth bypass diode. According to the junction box photovoltaic module and the manufacturing method thereof by which the currents flowing through the junction boxes are reduced, and the circuit connection of five strings of battery pieces can be realized.

Description

technical field [0001] The invention relates to the field of photovoltaic component manufacturing, in particular to a junction box photovoltaic component and a manufacturing method thereof. Background technique [0002] Most of the circuits of common half-slice photovoltaic modules are several cells, most of which are six strings connected in series and then paralleled to form a circuit. This photovoltaic module has three junction boxes, and the junction box is located in the middle of the photovoltaic module. Wherein, the first junction box 1 includes a negative output terminal and a bypass diode; the second junction box 2 includes a bypass diode; the third junction box 3 includes a positive output terminal and a bypass diode. Its circuit diagram is as figure 2 , the first diode 4 protects the battery slice I7 and the battery slice II8, the second diode 5 protects the battery slice III9 and the battery slice IV10, and the third diode 6 protects the battery slice V11 and t...

AI Technical Summary

Problems solved by technology

The height of the existing module packaging is determined by the width of the module, and the height of the 1.3m wide module after stacking and packaging will reach more than 2.8m, exceeding the inner height of the container

If the photovoltaic module with six strings of cells is reduced by one string of cells to five strings of cells, the circuit diagram is as follows Figure 4 , the positive output will be located at both ends of the component and cannot be brought together, therefore, it is not possible to use the existing three-point junction box for circuit connection

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