Semiconductor chip package and method of forming

Abstract

A solar cell string and a photovoltaic module are provided. The solar cell string includes a first adhesive layer including N placement regions sequentially arranged along a first direction, N solar cells, first wires, and a second adhesive layer. Each of the N solar cells is disposed on a corresponding placement region of the N placement regions. The first wires stretch across adjacent placement regions to electrically connect adjacent solar cells. The second adhesive layer is disposed on the surface of the at least one of the N solar cells away from the first adhesive layer, the first wires are located between the second adhesive layer and the at least one of the N solar cells, and the first adhesive layer, the first wires, the N solar cells, and the second adhesive layer are bonded and fixed.

What is claimed is: 
     
         1 . A solar cell string, comprising:
 a first adhesive layer, wherein the first adhesive layer comprises N placement regions sequentially arranged along a first direction, and the N is a positive integer greater than 1;   N solar cells, wherein each of the N solar cells is disposed on a corresponding placement region of the N placement regions;   first wires, wherein the first wires are laid on a surface of at least one of the N solar cells away from the first adhesive layer, and the first wires stretch across adjacent placement regions to electrically connect adjacent solar cells; and   a second adhesive layer, wherein the second adhesive layer is disposed on the surface of the at least one of the N solar cells away from the first adhesive layer, the first wires are located between the second adhesive layer and the at least one of the N solar cells, and the first adhesive layer, the first wires, the N solar cells, and the second adhesive layer are bonded and fixed.   
     
     
         2 . The solar cell string according to  claim 1 , wherein the N solar cells comprise a first solar cell at a head portion of the solar cell string and an Nth solar cell at a tail portion of the solar cell string respectively; the solar cell string further comprises:
 head wires, wherein the head wires are located between the first adhesive layer and the first solar cell and extend outside the first solar cell;   tail wires, wherein the tail wires are located on a surface of the Nth solar cell away from the first adhesive layer, and extend outside the Nth solar cell; and the second adhesive layer is disposed on the surface of the Nth solar cell away from the first adhesive layer; and   at least two bus bars, wherein one of the bus bars is contacted and connected with the head wire extending outside the first solar cell, and the other bus bar is contacted and connected with the tail wire extending outside the Nth solar cell; and extend directions of the two bus bars are both different from the first direction.   
     
     
         3 . The solar cell string according to  claim 1 , wherein in the first direction, an absolute value of a difference between a total length of the N solar cells and a length of the first adhesive layer is less than or equal to 100 mm and an absolute value of a difference between a length of the second adhesive layer and a total length of the N solar cells is less than or equal to 60 mm. 
     
     
         4 . The solar cell string according to  claim 1 , wherein the first adhesive layer comprises a support layer and an adhesive layer, and the adhesive layer is located between the support layer and the N solar cells; the second adhesive layer is of a single-layer structure. 
     
     
         5 . The solar cell string according to  claim 1 , wherein light-receiving surfaces of the N solar cells face a same direction, and each of the first wires comprises a light-receiving wire, a connecting wire, and a rear wire that are sequentially connected, wherein
 for each first wire of the first wires, the light-receiving wire of the first wire is disposed on a light-receiving surface of a corresponding solar cell of the N solar cells, and the rear wire of the first wire is located on an adjacent placement region of the first adhesive layer, wherein the light-receiving surface is away from the first adhesive layer.   
     
     
         6 . The solar cell string according to  claim 5 , wherein light-receiving wires on the light-receiving surface of the corresponding solar cell of the N solar cells are dense grid lines, the light-receiving surface of the corresponding solar cell of the N solar cells is provided with subgrid lines arranged at intervals, and the subgrid lines intersect and contact with the dense grid lines, wherein the second adhesive layer is disposed on surfaces of the subgrid lines. 
     
     
         7 . The solar cell string according to  claim 5 , wherein 8 to 32 light-receiving wires are laid at intervals on the light-receiving surface of each of the N solar cells. 
     
     
         8 . The solar cell string according to  claim 1 , wherein in the first direction, an absolute value of a difference between a length of the head wire and a length of the first solar cell is less than or equal to 20 mm. 
     
     
         9 . The solar cell string according to  claim 1 , wherein in the first direction, an absolute value of a difference between a length of any of the first wires and twice a length of any of the solar cells is less than or equal to 40 mm. 
     
     
         10 . The solar cell string according to  claim 1 , wherein each of the first wires comprises a solder core and an alloy layer surrounding the solder core, and the alloy layer is made from at least one material selected from a group consisting of Sn, Pb, Bi, In, Zn, Cu, Sb, and Ag. 
     
     
         11 . A photovoltaic module, comprising a first substrate, a first encapsulating layer, a solar cell string, a second encapsulating layer, and a second substrate are stacked in sequence, wherein the solar cell string comprises:
 a first adhesive layer, wherein the first adhesive layer comprises N placement regions sequentially arranged along a first direction, and the N is a positive integer greater than 1;   N solar cells, wherein each of the N solar cells is disposed on a corresponding placement region of the N placement regions;   first wires, wherein the first wires are laid on a surface of at least one of the N solar cells away from the first adhesive layer, and the first wires stretch across adjacent placement regions to electrically connect adjacent solar cells; and   a second adhesive layer, wherein the second adhesive layer is disposed on the surface of the at least one of the N solar cells away from the first adhesive layer, the first wires are located between the second adhesive layer and the at least one of the N solar cells, and the first adhesive layer, the first wires, the N solar cells, and the second adhesive layer are bonded and fixed.   
     
     
         12 . The photovoltaic module according to  claim 11 , wherein the N solar cells comprise a first solar cell at a head portion of the solar cell string and an Nth solar cell at a tail portion of the solar cell string respectively; the solar cell string further comprises:
 head wires, wherein the head wires are located between the first adhesive layer and the first solar cell and extend outside the first solar cell;   tail wires, wherein the tail wires are located on a surface of the Nth solar cell away from the first adhesive layer, and extend outside the Nth solar cell; and the second adhesive layer is disposed on the surface of the Nth solar cell away from the first adhesive layer; and   at least two bus bars, wherein one of the bus bars is contacted and connected with the head wire extending outside the first solar cell, and the other bus bar is contacted and connected with the tail wire extending outside the Nth solar cell; and extend directions of the two bus bars are both different from the first direction.   
     
     
         13 . The photovoltaic module according to  claim 11 , wherein in the first direction, an absolute value of a difference between a total length of the N solar cells and a length of the first adhesive layer is less than or equal to 100 mm and an absolute value of a difference between a length of the second adhesive layer and a total length of the N solar cells is less than or equal to 60 mm. 
     
     
         14 . The photovoltaic module according to  claim 11 , wherein in a direction perpendicular to the first direction, the first adhesive layer has a total thickness of 0.1 mm to 0.4 mm, and the second adhesive layer has a thickness of 0.1 mm to 0.4 mm. 
     
     
         15 . The photovoltaic module according to  claim 11 , wherein light-receiving surfaces of the N solar cells face a same direction, and each of the first wires comprises a light-receiving wire, a connecting wire, and a rear wire that are sequentially connected, wherein
 for each first wire of the first wires, the light-receiving wire of the first wire is disposed on a light-receiving surface of a corresponding solar cell of the N solar cells, the rear wire of the first wire is located on a rear surface of another solar cell of the N solar cells subsequent to the corresponding solar cell, and the connecting wire of the first wire is located between the corresponding solar cell of the N solar cells and the another solar cell, wherein the light-receiving surface is away from the first adhesive layer.   
     
     
         16 . The photovoltaic module according to  claim 15 , wherein light-receiving wires on the light-receiving surface of the corresponding solar cell of the N solar cells are dense grid lines, the light-receiving surface of the corresponding solar cell of the N solar cells is provided with subgrid lines arranged at intervals, and the subgrid lines intersect and contact with the dense grid lines, wherein the second adhesive layer is disposed on surfaces of the subgrid lines. 
     
     
         17 . The photovoltaic module according to  claim 15 , wherein 8 to 32 light-receiving wires are laid at intervals on the light-receiving surface of each of the N solar cells. 
     
     
         18 . The photovoltaic module according to  claim 11 , wherein in the first direction, an absolute value of a difference between a length of the head wire and a length of the first solar cell is less than or equal to 20 mm. 
     
     
         19 . The photovoltaic module according to  claim 11 , wherein in the first direction, an absolute value of a difference between a length of any of the first wires and twice the length of any of the solar cells is less than or equal to 40 mm. 
     
     
         20 . The photovoltaic module according to  claim 11 , wherein
 the first substrate is a flexible or rigid substrate with high light transmittance or high reflectance;   the second substrate is made of at least one of polyethylene terephthalate, tempered glass, and ethylene-tetrafluoroethylene copolymer;   the first encapsulation layer is made of at least one of polyethylene-polyvinyl acetate copolymer, polyolefin, and polyvinyl butyral; and   the second encapsulation layer is made of at least one of polyethylene-polyvinyl acetate copolymer, polyolefin, and polyvinyl butyral.