Abstract: A solar cell unit comprises a cell. The cell includes a cell substrate and a secondary grid line disposed on a front surface of the cell substrate. The solar cell unit also comprises a conductive wire intersecting and welded with the secondary grid line. The secondary grid line has a width in a welding position with the conductive wire greater than a width thereof in a non-welding position.

Abstract: A double-glass photovoltaic module includes: a body, where the body includes 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, the cell group layer extracts a current by using 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 frame, encapsulated at a periphery of the body by a sealant and having a notch; and a connection box, disposed at the notch, and sealed and connected to the body the frame, and the bus bar is electrically connected to the connection box.

Abstract: A photovoltaic cell module includes: a transparent upper cover plate, a first polyolefin encapsulation layer, a cell group layer, a second polyolefin encapsulation layer, and a backplane that are sequentially disposed in a laminated manner, where outer edges of the transparent upper cover plate and the backplane exceed outer edges of the first polyolefin encapsulation layer, the cell group layer, and the second polyolefin encapsulation layer, an end part sealing block is further disposed between the transparent upper cover plate and the backplane, and the end part sealing block is located at peripheries of the first polyolefin encapsulation layer, the cell group layer, and the second polyolefin encapsulation layer.

Abstract: A photovoltaic cell module includes: a transparent upper cover plate, a first polyolefin encapsulation layer, a cell group layer, a second polyolefin encapsulation layer, and a backplane that are sequentially disposed in a laminated manner, where outer edges of the transparent upper cover plate and the backplane exceed outer edges of the first polyolefin encapsulation layer, the cell group layer, and the second polyolefin encapsulation layer, an end part sealing block is further disposed between the transparent upper cover plate and the backplane, and the end part sealing block is located at peripheries of the first polyolefin encapsulation layer, the cell group layer, and the second polyolefin encapsulation layer.

Abstract: A double-glass photovoltaic module includes: a body, where the body includes 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, the cell group layer extracts a current by using 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 frame, encapsulated at a periphery of the body by a sealant and having a notch; and a connection box, disposed at the notch, and sealed and connected to the body the frame, and the bus bar is electrically connected to the connection box.

Abstract: A solar cell unit comprises a cell. The cell includes a cell substrate and a secondary grid line disposed on a front surface of the cell substrate. The solar cell unit also comprises a conductive wire intersecting and welded with the secondary grid line. The secondary grid line has a width in a welding position with the conductive wire greater than a width thereof in a non-welding position.

Abstract: A solar cell and a backplane for a solar cell, where the backplane comprises a metal substrate having first and second opposing major surfaces, and an insulating layer on at least one major surface of the metal substrate. The insulating layer comprises a resin selected from the group consisting of phenolic resins, epoxy resins, amino resins, and combinations thereof.