Photovoltaic module backboard and photovoltaic module

The invention provides a photovoltaic module backboard and a photovoltaic module, the photovoltaic module backboard comprises a metal layer, one side of the front surface and one side of the back surface of the metal layer are respectively provided with a first insulating layer, and the projection of the metal layer on the first insulating layer is located in the edge of the first insulating layer. And a gap is formed between the edge of the projection of the metal layer on the first insulating layer and the edge of the first insulating layer. The photovoltaic module backboard of the application has good insulation performance and high voltage resistance. 本申请提供一种光伏组件背板和光伏组件，光伏组件背板包括金属层，金属层的正面一侧和背面一侧均设置第一绝缘层，所述金属层在第一绝缘层上的投影位于第一绝缘层的边沿内部，且所述金属层在所述第一绝缘层上的投影的边沿和所述第一绝缘层的边沿之间具有间隙。本申请的光伏组件背板具有良好的绝缘性能和耐高压性能。