A double-glass photovoltaic module, comprising: a body, comprising a first glass layer, a first encapsulation layer, a cell group layer, a second encapsulation layer, and a second glass layer that are sequentially disposed in a laminated manner, wherein the cell group layer extracts a current by a bus bar, and the bus bar is led out between the first glass layer and the second glass layer and from an edge of the body; a surface mount thin sheet diode, wherein the thin sheet diode is welded to the bus bar and is laminated between the first glass layer and the second glass layer; a frame, encapsulated at a periphery of the body, and having a notch; and a connection box, disposed at the notch, sealed and connected to the body and the frame, the bus bar being electrically connected to the connection box; wherein the connection box comprises: a case, having a chamber, a side wall of the chamber being provided with a threading hole, and the bus bar running through the threading hole and entering the chamber; two partition plates, disposed inside the chamber to divide the chamber into three sub-chambers (401a; 402a, 403a), and the threading hole being formed on side walls of two outmost sub-chambers of the three sub-chambers; a conductive block, disposed inside the chamber and running through the three sub-chambers, and the bus bar being connected to the conductive block after entering the chamber; a diode, disposed inside a middle sub-chamber of the three sub-chambers (401a, 402a, 403a), and electrically connected to the conductive block, wherein the sub-chamber in which the diode is located is sealed by potting glue and/or wherein the diode is welded to the conductive block; and a connector member, located outside the case and connected to the conductive block by a cable. a body, comprising a first glass layer, a first encapsulation layer, a cell group layer, a second encapsulation layer, and a second glass layer that are sequentially disposed in a laminated manner, wherein the cell group layer extracts a current by a bus bar, and the bus bar is led out between the first glass layer and the second glass layer and from an edge of the body; a surface mount thin sheet diode, wherein the thin sheet diode is welded to the bus bar and is laminated between the first glass layer and the second glass layer; a frame, encapsulated at a periphery of the body, and having a notch; and a connection box, disposed at the notch, sealed and connected to the body and the frame, the bus bar being electrically connected to the connection box; wherein the connection box comprises: a case, having a chamber, a side wall of the chamber being provided with a threading hole, and the bus bar running through the threading hole and entering the chamber; two partition plates, disposed inside the chamber to divide the chamber into three sub-chambers (401a; 402a, 403a), and the threading hole being formed on side walls of two outmost sub-chambers of the three sub-chambers; a conductive block, disposed inside the chamber and running through the three sub-chambers, and the bus bar being connected to the conductive block after entering the chamber; a diode, disposed inside a middle sub-chamber of the three sub-chambers (401a, 402a, 403a), and electrically connected to the conductive block, wherein the sub-chamber in which the diode is located is sealed by potting glue and/or wherein the diode is welded to the conductive block; and a connector member, located outside the case and connected to the conductive block by a cable. a case, having a chamber, a side wall of the chamber being provided with a threading hole, and the bus bar running through the threading hole and entering the chamber; two partition plates, disposed inside the chamber to divide the chamber into three sub-chambers (401a; 402a, 403a), and the threading hole being formed on side walls of two outmost sub-chambers of the three sub-chambers; a conductive block, disposed inside the chamber and running through the three sub-chambers, and the bus bar being connected to the conductive block after entering the chamber; a diode, disposed inside a middle sub-chamber of the three sub-chambers (401a, 402a, 403a), and electrically connected to the conductive block, wherein the sub-chamber in which the diode is located is sealed by potting glue and/or wherein the diode is welded to the conductive block; and a connector member, located outside the case and connected to the conductive block by a cable.