Photovoltaic junction box

Abstract

The invention discloses a photovoltaic junction box which has the advantages of wide applicability and convenient connection. The photovoltaic junction box comprises a box body and a box cover, wherein the box cover is arranged on the box body and cooperates with the box body; the bottom of the box body is provided with a mounting hole; six connecting pieces are orderly arranged in the box body; a diode is respectively arranged between every two connecting pieces; the box body, corresponding to one end of both the first connecting piece and the second connecting piece which are arranged on the left and right ends, is respectively provided with a first connecting jack and a second connecting jack; and the box body corresponding one end of both the third connecting piece and the fourth connecting piece is respectively provided with a third connecting jack and a fourth connecting jack. The photovoltaic junction box is connected with the positive and negative bus bars led out from the bottom of a solar battery pack in a clamping mode, thereby being more convenient as compared with the traditional welding technology. Four connecting jacks are arranged on the box body, and the left and right cables have multiple connection modes, so that the application range of the photovoltaic junction box is widened. Radiating fins are arranged on the diodes to emit heat generated by the diodes in time.

Description

technical field [0001] The invention relates to a photovoltaic junction box for connecting solar battery modules. Background technique [0002] Photovoltaic junction boxes are used to connect solar cell modules. When in use, several solar cell modules are connected in series by several photovoltaic junction boxes as needed. The structure of the existing photovoltaic junction box includes: a box body, which is arranged on the box body and cooperates with the box body to cover each other. A positive bus bar and a negative bus bar that can be drawn out from the bottom of the solar cell module are provided at the bottom of the box body. The connecting mounting holes are provided with a number of connectors in sequence in the box body, diodes are arranged between the connectors, and wiring holes are respectively arranged on the box bodies at the corresponding positions of the two connectors on the left and right ends. When in use, the left cable and the right cable respectively ...

AI Technical Summary

Problems solved by technology

Since there are only two wiring holes on the box body, the connection mode of the left and right cables is relatively simple, and there is only one connection mode, and the use range of the junction box is small

At the same time, because the connection between the bus bar and the connecting piece is connected by welding, it is very inconvenient to connect. In addition, there are many connecting pieces and diodes. When working, the temperature of the diodes is too high and cannot be dissipated in time.

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