Solar photovoltaic panel battery sub string-level optimization circuit structure and optimization way

A solar photovoltaic panel and solar cell technology, applied in photovoltaic power generation, photovoltaic modules, electrical components, etc., can solve problems such as no optimization function, difficulty in realizing the layout of solar panels, and reducing power generation.

Inactive Publication Date: 2017-06-20
DONGGUAN ZERUN ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In order to achieve the maximum output power, solar panels are mostly constructed by connecting multiple solar cells in series. Traditional solar panels only have three diodes, which have no optimization f

Method used

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  • Solar photovoltaic panel battery sub string-level optimization circuit structure and optimization way
  • Solar photovoltaic panel battery sub string-level optimization circuit structure and optimization way
  • Solar photovoltaic panel battery sub string-level optimization circuit structure and optimization way

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Embodiment Construction

[0027] Please refer to Figure 1 to Figure 3 As shown, it shows the specific structure of a preferred embodiment of a solar photovoltaic panel battery sub-string optimization circuit structure of the present invention, including at least a first chip IC1, a second chip IC2 and a third chip IC3.

[0028] Such as figure 2 As shown, a capacitor C is connected between the pin PV+ and the pin PV- of the first chip IC1 IN1 The pin PV+ of the first chip IC1 is connected to the input port PV1+, the pin PV- of the first chip IC1 is connected to the input port PV1- and the output port OUT-, the pin PV- of the first chip IC1 is connected to the pin VCC A capacitor C is connected between VCC1 , a capacitor C is connected between pin BST and pin OUT of the first chip IC1 BST1 , the pin OUT of the first chip IC1 is connected to one end of an inductor L1, and the other end of the inductor L1 is connected to a capacitor C OUT1 One end of the capacitor C OUT1 The other end of is connecte...

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Abstract

The invention discloses a solar photovoltaic panel battery sub string-level optimization circuit structure and optimization way. The optimization circuit structure at least comprises a first chip IC1, a second chip IC2 ad a third chip IC3; and a first solar battery sub string, a second solar battery sub string and a third solar battery sub string adjust voltage and current through the first chip IC1, the second chip IC2 and the third chip IC3 respectively, and maximum function can be obtained at any state, and current and voltage are output through a cable connector. The adjustment of the voltage and the current of each solar battery sub string is realized by the respective chip; each string of the battery can be subjected to MPPT and direct current optimization; by eliminating mismatching in all battery panels or between battery panels, such as shadow shielding between arrays, pollution on the surface of an assembly, shadow shielding of obstacles around a power station, and the like, maximum supplying for each string of the battery in the same condition and environment can be realized, so that electric energy production can be improved, layout of dense solar panels can be realized, and system reliability can be improved.

Description

technical field [0001] The invention relates to the technology in the field of photovoltaic power generation, in particular to a solar photovoltaic panel battery sub-string optimization circuit structure and an optimization method. Background technique [0002] Photovoltaic power generation is based on the principle of photovoltaic effect, using solar cells to directly convert sunlight energy into electrical energy. Regardless of whether it is used independently or connected to the grid, the photovoltaic power generation system is mainly composed of three parts: solar panels (components), controllers and inverters. In order to achieve the maximum output power, solar panels are mostly constructed by connecting multiple solar cells in series. Traditional solar panels only have three diodes, which have no optimization function. When one of the battery packs is shaded, the power generation of the entire assembly will Affected, the power generation is greatly reduced, and it is ...

Claims

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Application Information

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IPC IPC(8): H02S40/30H02S40/34H02S40/36
CPCH02S40/30H02S40/34H02S40/36Y02E10/50
Inventor 陈泽鹏
Owner DONGGUAN ZERUN ELECTRONICS TECH
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