Solar energy conjunction box

Provided is a solar energy conjunction box, comprising a casing, a circuit board fixed in the casing and at least two power heating elements in electric connection with the circuit board. The circuit board is provided with at least two metal supports; each power heating element is fixed on a metal support for heat dissipation by means of the corresponding metal support. Accommodating spaces are formed in the metal supports; spring sheets are arranged in the accommodating spaces of the metal supports; conducting strips of the solar energy conjunction box can be in electric connection with the metal supports through the clamping of the spring sheets. The power heating elements of the solar energy conjunction box can be directly fixed on the metal supports, which can effectively reduce contact impedance, improve temperatures of the circuit board and the power heating elements and avoid deformation and crack of the plastic casing of the solar energy conjunction box.