Double-sided photovoltaic laminated assembly compatible with junction box shielding
A technology of laminated components and junction boxes, applied in photovoltaic modules, photovoltaic power generation, electrical components, etc., can solve problems such as complex production equipment and processes, reduced front conversion efficiency, poor compatibility of installation methods, etc., to achieve appearance optimization and ease power generation The effect of reducing power generation and improving the double-sided comprehensive power generation
Active Publication Date: 2018-08-28
LONGI SOLAR TECH (TAIZHOU) CO LTD
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Problems solved by technology
[0026] The present invention aims to provide a double-sided photovoltaic laminated module compatible with junction box shielding. The present invention aims to optimize the battery string in the double-sided laminated module , to solve the problems existing in several existing double-sided laminated modules such as back light shading, front-side conversion efficiency reduction, complex production equipment and processes, and poor compatibility with short-side installation methods of modules, etc.
Method used
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[0071] Such as Figure 18 As shown, the battery string ABCDEF is composed of 76 battery slices, of which the first and 76th slices are double-sided laminated batteries with a side length of 1 / 5 slices of 156.75 mm, and the remaining slices are 1 / 6 slices with a side length of 156.75 mm. mm double-sided laminated battery.
[0072] The two ends of the long string ABCDEF are respectively connected to the terminal bus bar 2 at both ends of the module; the terminal bus bar 2 is connected to the bypass diode in the junction box 6 through the lead wire. The long strings ABCDEF are composed of two short strings respectively, and the short strings are connected by welding strips. These ribbons are in turn connected together by a parallel ribbon 4 . There is a bypass ribbon 3 between the series CDs, the two ends of the bypass ribbon 3 are respectively connected to two bypass diodes, and the middle of the bypass ribbon 3 is connected to the parallel ribbon 4 .
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The invention discloses a double-sided photovoltaic laminated assembly compatible with junction box shielding. The double-sided photovoltaic laminated assembly comprises a junction box and a battery string group packaged between a front plate and a back plate. The battery string group is composed of a plurality of long battery strings. A plurality of battery sheets are laminated so as to form onelong battery string. The junction box is disposed on the back plate. The junction box shields some battery sheets of the long battery strings. In the shielded long battery strings, unshielded batterysheets are first double-sided batteries, and shielded battery sheets are single-sided batteries or second double-sided batteries. The single-sided batteries, the first double-sided batteries, and thesecond double-sided batteries satisfy the following conditions that: the operating current of a single-sided battery is not lower than working current generated on the front surface of the first double-sided batteries (A); and the double-sided operating current of a single second double-sided battery (B) is not lower than the double-sided operating current of the first double-sided batteries (A).The battery strings in the double-sided laminated assembly are optimized, problems of back side light shading, front side conversion efficiency reduction, complicated production equipment and processes, and poor compatibility with an assembly short-edge installation mode of a plurality of kinds of double-sided laminated assemblies in the prior art can be solved.
Description
technical field [0001] The invention belongs to the technical field of photovoltaic modules, and in particular relates to a double-sided photovoltaic laminated module compatible with the shielding of a junction box. Background technique [0002] A solar cell is a device that uses the photovoltaic effect to directly convert light energy into direct current. According to different photoelectric conversion materials, solar cells include monocrystalline silicon, polycrystalline silicon, amorphous silicon thin films, cadmium telluride thin films, copper indium gallium tin thin films, gallium arsenide, fuel sensitization, perovskite, stacked layers, etc. . The most common of these are crystalline silicon solar cells, including monocrystalline silicon solar cells and polycrystalline silicon solar cells. Solar cells are usually in the shape of a sheet. The side that absorbs light energy and converts it into electricity is called the light-absorbing side or front side, and the othe...
Claims
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Login to View More IPC IPC(8): H01L31/042H02S40/34
CPCH01L31/042H02S40/34Y02E10/50
Inventor 郑直焦方凯胡栋明强
Owner LONGI SOLAR TECH (TAIZHOU) CO LTD