PV module cell matrix placement station and methods for removing air or bubbles during the manufacturing process
Methods and devices for removing entrapped bubbles or air in photovoltaic solar cells during a manufacturing process including an encapsulation process include, for example, wiggling the photovoltaic solar cells or pushing out air bubbles by applying vibrations and/or light pressures. Optional additional steps include liquid wetting or dispensing to or around the photovoltaic solar cell matrix for air releasing before the placement of the matrix into a liquid for encapsulation.
1. A PV cell module manufacturing method comprising:
a. assembling a photovoltaic cell matrix comprising a plurality of individual photovoltaic cells;
b. applying a first layer of liquid encapsulating material on a surface of a glass;
c. placing the photovoltaic cell matrix on the first layer of liquid encapsulating material to form a photovoltaic cell matric assembly, wherein placing the photovoltaic cell matrix on the first layer comprises applying a mechanical motion to remove air or an air bubble;
d. applying a second layer of liquid encapsulating material on the photovoltaic cell matrix assembly; and
e. curing the first layer of liquid encapsulating material and the second layer of liquid encapsulating material.
2. The method of claim 1 , wherein the mechanical motion comprises wiggling.
3. The method of claim 1 , wherein the mechanical motion comprises vibration.
4. The method of claim 1 , wherein the mechanical motion comprises an external applied pressure.
5. The method of claim 1 , further comprising semi-curing the first layer of liquid encapsulating material after placing the photovoltaic cell matrix on the first layer of liquid encapsulating material and prior to applying the second layer of liquid encapsulating material.
6. The method of claim 1 , further comprising applying a wetting solution to the photovoltaic cell matrix assembly prior to applying the second layer of encapsulating material.
7. An air removal method in an encapsulating process comprising:
a. assembling a photovoltaic cell matrix comprising a plurality of individual photovoltaic cells;
b. applying a first layer of liquid encapsulating material on a surface of a glass;
c. adding an additional volume of liquid encapsulating material to the first layer of liquid encapsulating material at a centroid of the surface of the glass;
d. placing the photovoltaic cell matrix on the additional volume of liquid encapsulating material to form a photovoltaic cell matric assembly, wherein placing the photovoltaic cell matrix on the additional volume comprises applying a mechanical motion to remove air or an air bubble;
e. applying a second layer of liquid encapsulating material on the photovoltaic cell matrix assembly; and
f. curing the first layer of liquid encapsulating material and the second layer of liquid encapsulating material.
8. The method of claim 7 , wherein the mechanical motion comprises wiggling.
9. The method of claim 7 , wherein the mechanical motion comprises vibrating.
10. The method of claim 7 , wherein the mechanical motion comprises an external applied pressure.
11. The method of claim 7 , further comprising subjecting the photovoltaic cell matrix assembly to a negative pressure environment or a vacuum environment after applying the second layer of liquid encapsulating material and prior to curing.
12. An encapsulating process comprising:
a. placing one or more photovoltaic cells on top of a glass;
b. adding a first layer of liquid encapsulating material along sides of the one or more photovoltaic cells, wherein the first layer of liquid encapsulating material flows underneath the one or more photovoltaic cells through a capillary force thereby forming a first encapsulation layer;
c. applying a second layer of liquid encapsulating material on the one or more photovoltaic cells to form a second encapsulating layer, thereby encapsulating the one or more photovoltaic cells;
d. applying a polymer layer over the second layer of liquid encapsulating material; and
e. curing the first layer of liquid encapsulating material and the second layer of liquid encapsulating material.
13. The process of claim 12 , wherein the second encapsulating material covers all exposed areas of the photovoltaic cell.