High-efficiency heat dissipation junction box for photovoltaic module

The invention discloses a high-efficiency heat dissipation junction box for a photovoltaic module, and relates to a semiconductor power device. Comprising a box body and a box cover, the box cover is used for being connected to an opening in the top of the box body, pouring sealant and an axial diode are arranged in the box cover, the motor is arranged on the top of the box cover, a rotating shaft of the motor drives the metal strip to rotate through a driving block, the diode comprises a metal heat dissipation base, and the metal heat dissipation base is arranged on the box cover. A U-shaped groove is formed in the metal heat dissipation base, a pair of penetrating holes is formed in the box cover, and the metal strip is located in the U-shaped groove and the penetrating holes. The box cover is a metal cover. In the working process, a metal connecting channel (namely a metal strip) is constructed between the box cover and the diode, and a heat source is directly transmitted into air through the box cover to