The invention discloses a potted photovoltaic
junction box. The potted photovoltaic
junction box comprises a base and an upper cover, which are buckled mutually, wherein a bottom plate is mounted in the base; terminals are mounted on the bottom plate; band clamps and diodes are mounted on the terminals; photovoltaic cables penetrate through cable pressing buckles mounted in the base and is connected with the terminals; the interior of the base, in a position above the bottom plate, is filled with a
sealant. According to the potted photovoltaic
junction box, the hottest part is not in direct contact with a solar back panel, a
convection cavity is formed in the bottom of the base, the bottom surface of the base forms a
height difference with the bottom plate, and ventilation holes are formed in the upper cover, so that good
radiation effects are achieved; the inner cavity of a box body is filled with
metal parts, so that a large
radiation area after
potting is ensured, and heat is uniformly distributed; the periphery of the base is bent to form hoardings, and cavities are formed through the hoardings, so that the
potting volume is reduced, and meanwhile, the
radiation speed is increased; convex plates are additionally arranged at the edges of the terminals, so that the effect of enlarging the radiation area is achieved; a
busbar is fixed in dual ways of
welding and clamping, and the terminals, the bottom plate and the base are firmly connected, so that high reliability is ensured; lug bosses are used as fulcrums, so that the clamps can be conveniently pried to realize mounting and dismounting.