Automobile power supply high-voltage junction box

The utility model discloses a high-voltage junction box of an automobile power supply. The high-voltage junction box comprises a junction box body, a cover plate and an annular sealing ring, the junction box body is provided with a containing groove, and an annular groove is formed in a groove opening of the containing groove. The annular sealing ring is contained in the annular groove, the thickness of the annular sealing ring is T, the depth of the annular groove is H, and T is smaller than H; an extrusion ring is arranged on the plate surface of the cover plate, the cover plate covers the junction box body, and the extrusion ring is pressed on the annular sealing ring of the annular groove; a colloid accommodating groove is formed in the annular sealing ring; and a sealing colloid is coated in the colloid accommodating groove of the annular sealing ring. According to the high-voltage junction box of the automobile power supply, the colloid accommodating groove is formed in the annular sealing ring, so that