CN-224218339-U - Photovoltaic module with direct lightning strike and inductive lightning dual protection functions

CN224218339UCN 224218339 UCN224218339 UCN 224218339UCN-224218339-U

Abstract

The utility model discloses a photovoltaic module with direct lightning strike and induction lightning strike dual protection functions, which comprises a metal support frame and a photovoltaic plate arranged in the metal support frame, wherein the photovoltaic plate comprises an upper glass plate, a drainage wire layer, a lower glass plate and a photovoltaic power generation plate from top to bottom, the photovoltaic plate is sequentially attached and fixed, a plurality of mounting holes are formed in the upper glass plate, a metal lightning receptor is arranged in each mounting hole, the lower end of the metal lightning receptor is connected to the drainage wire layer, a plurality of drainage buckles used for fixing the photovoltaic plate are arranged on the metal support frame and are communicated with the drainage wire layer in the photovoltaic plate, and a grounding connecting piece is further arranged on the metal support frame. The utility model can effectively protect the photovoltaic panel from direct lightning strike and induced lightning, and has better double lightning protection effect. Meanwhile, the lightning triggering risk of the small-size metal lightning receptor can be greatly reduced, shielding of the photovoltaic power generation assembly is reduced, safe operation of the photovoltaic panel in a lightning environment is guaranteed, and the power generation efficiency of the photovoltaic panel is not affected.

Inventors

BI XIAOLEI
ZHANG YINGJIE
LIU XUAN
MA MENGBAI
TAO BIN
WANG SHIQIANG

Assignees

中国石油化工股份有限公司
中石化安全工程研究院有限公司

Dates

Publication Date: 20260508
Application Date: 20250529

Claims (10)

1. A photovoltaic module with direct lightning strike and induction lightning strike dual protection functions is characterized by comprising a metal supporting frame and a photovoltaic plate arranged in the metal supporting frame, wherein the photovoltaic plate comprises an upper glass plate, a drainage wire layer, a lower glass plate and a photovoltaic power generation plate from top to bottom, the upper glass plate, the lower glass plate and the photovoltaic power generation plate are sequentially attached and fixed, a plurality of mounting holes are formed in the upper glass plate of the photovoltaic plate, metal lightning collectors are arranged in the mounting holes, the lower ends of the metal lightning collectors are connected to the drainage wire layer, a plurality of drainage buckles used for fixing the photovoltaic plate are arranged on the metal supporting frame and are communicated with the drainage wire layer in the photovoltaic plate, and a grounding connecting piece is further arranged on the metal supporting frame.
2. The photovoltaic module with the direct lightning strike and induction lightning dual protection function according to claim 1, wherein the photovoltaic power generation panel is composed of a plurality of PN junctions, electricity generated by each power generation PN junction is converged through a flow guide bar and finally converged to a positive cable and a negative cable of the photovoltaic panel, and the PN junctions are not covered by the flow guide bar.
3. The photovoltaic module with the direct lightning strike and induction lightning strike dual protection functions is characterized in that an upper glass plate, a drainage wire layer and a lower glass plate in the photovoltaic panel are integrally formed and pressed, the thickness of the upper glass plate and the thickness of the lower glass plate are 1-5 mm, the drainage wire layer comprises tiled metal drainage wires, the metal drainage wires are laid above the diversion strips of the photovoltaic panel, the thickness of the metal drainage wires is 1-3 mm, and the width of the metal drainage wires is not larger than the width of the diversion strips of the lower Fang Guangfu power panel.
4. The photovoltaic module with the direct lightning strike and induction lightning dual protection function according to claim 3, wherein the metal diversion wire is made of a plurality of strands of annealed copper wires.
5. The photovoltaic module with the direct lightning strike and induction lightning strike dual protection function according to claim 3 is characterized in that the metal lightning receptor comprises an upper cone and a lower cylinder which are integrally formed, wherein the outer side wall of the lower cylinder is provided with external threads, and the external threads penetrate through the mounting hole of the upper glass plate and are connected with metal drainage wires; The height of the upper cone in the metal lightning arrester exceeds the thickness of the upper glass plate by 3-20 mm, the diameter of the bottom surface circle of the upper cone is equal to the diameter of the lower cylinder by 2-8 mm, and the height of the lower cylinder is 1-5 mm.
6. The photovoltaic module with the dual protection functions of direct lightning strike and induced lightning as set forth in claim 5, wherein the metal lightning receptor is made of zinc-plated aluminum alloy or steel alloy.
7. The photovoltaic module with the direct lightning strike and induction lightning strike dual protection functions according to claim 3 is characterized in that the drainage buckle comprises a buckle head and a buckle bottom which can be mutually inserted, the cross section area of each part of the drainage buckle is not smaller than 4mm 2 , a plurality of buckle bottoms are fixedly arranged on four frames of the metal supporting frame respectively, and the buckle heads matched with the buckle bottoms are clamped on the edge of the photovoltaic panel and are connected with the outer ends of the metal drainage wires.
8. The photovoltaic module with the direct lightning strike and induction lightning strike dual protection function according to claim 7 is characterized in that the buckle bottom and the metal supporting frame are fixed through welding or bolting, the effective contact area between the buckle bottom and the metal supporting frame is not smaller than 4mm 2 , the buckle head and the outer end of the metal guide wire are fixed through bolting, and the effective contact area between the buckle head and the buckle bottom is not smaller than 6mm 2 .
9. The photovoltaic module with the direct lightning strike and induction lightning dual protection function according to claim 1, wherein the grounding connection piece comprises a grounding wire which is fixedly connected to the lower part of the metal supporting frame, the grounding wire is connected to the grounding body of the grounding net, and the cross section area of the grounding wire is not smaller than 6mm 2 .
10. The photovoltaic module with the direct lightning protection and induction lightning protection functions according to claim 1 is characterized in that the metal lightning receptor, the metal diversion wire, the diversion buckle, the metal support frame and the grounding wire are sequentially led into the ground in the face of the direct lightning protection, and the metal diversion wire, the diversion buckle and the metal support frame form a metal cage effect in the face of the induction lightning.

Description

Photovoltaic module with direct lightning strike and inductive lightning dual protection functions Technical Field The utility model relates to the technical field of lightning protection of petrochemical new energy power generation systems, in particular to a photovoltaic module with direct lightning striking and inductive lightning dual protection functions. Background Solar energy, wind energy and tidal energy are three green energy sources in the world, wherein solar photovoltaic power generation is favored by new energy industries due to simple installation mode and low cost. The solar photovoltaic power generation system is usually located in open areas with flat land features such as offshore, deserts and farmlands, and can occupy tens of thousands of square meters, and the solar photovoltaic power generation device is located at a high position due to flat and open land features, so that the solar photovoltaic power generation system is easy to be struck by lightning when the solar photovoltaic power generation system is damaged in overcast and rainy weather, a certain natural disaster can be brought, and lightning strike accidents suffered by the photovoltaic power generation assembly in recent years are frequent. The existing solar photovoltaic power generation system is generally not provided with lightning stroke protection measures such as a lightning receiving rod, a lightning receiving belt and the like at the side of a power generation assembly, and only a surge protector is installed in a combiner box, an inverter and the like, however, lightning stroke accidents of the photovoltaic power generation assembly still occur frequently, so that the photovoltaic power generation assembly is damaged, normal use of the photovoltaic power generation assembly is affected, the photovoltaic power generation efficiency is lowered, and subsequent maintenance is inconvenient and the cost is increased. Disclosure of utility model The utility model aims to solve the defects of the prior art, effectively discharge lightning impact (including direct lightning strike and induced lightning strike) suffered by a photovoltaic panel and avoid damage of lightning strike, and provides a photovoltaic module with dual protection functions of direct lightning strike and induced lightning strike. The technical scheme includes that the photovoltaic module with the direct lightning strike and induction lightning strike dual protection functions comprises a metal supporting frame and a photovoltaic plate arranged in the metal supporting frame, wherein the photovoltaic plate comprises an upper glass plate, a drainage wire layer, a lower glass plate and a photovoltaic power generation plate which are sequentially attached and fixed from top to bottom, a plurality of mounting holes are formed in the upper glass plate of the photovoltaic plate, metal lightning connectors are arranged in the mounting holes, the lower ends of the metal lightning connectors are connected to the drainage wire layer, a plurality of drainage buckles used for fixing the photovoltaic plate are arranged on the metal supporting frame and are communicated with the drainage wire layer in the photovoltaic plate, and a grounding connecting piece is further arranged on the metal supporting frame. Further, the photovoltaic power generation panel is composed of innumerable PN junctions, electricity generated by each power generation PN junction is converged through the guide bar, and finally converged to the positive electrode cable and the negative electrode cable of the photovoltaic panel, and the guide bar does not cover the PN junctions. Further, an integral molding compression joint process is adopted for the upper glass plate, the drainage wire layer and the lower glass plate in the photovoltaic panel, the thicknesses of the upper glass plate and the lower glass plate are 1-5 mm, the drainage wire layer comprises metal drainage wires which are tiled, the metal drainage wires are laid above the flow guide strips of the photovoltaic power generation panel, the thickness of the metal drainage wires is 1-3 mm, and the width of the metal drainage wires is not larger than the width of the flow guide strips of the lower Fang Guangfu power generation panel. Further, the metal drainage wire is made of a plurality of annealed copper wires. Further, the metal lightning receptor comprises an upper cone and a lower cylinder, which are integrally formed, wherein the outer side wall of the lower cylinder is provided with external threads, the external threads penetrate through the mounting hole of the upper glass plate and then are connected with the metal drainage wire, and the metal lightning receptor is arranged above the node of the flow guide strip in the photovoltaic power generation plate. The height of the upper cone in the metal lightning arrester exceeds the thickness of the upper glass plate by 3-20 mm, the diameter of the bottom surface circle of the upper