Dense-condensation photovoltaic cell array reducing mismatch loss

A battery array and concentrating photovoltaic technology, applied in the field of solar energy utilization, can solve the problems of large optical loss and DA-CPV system cost increase, and achieve the effect of increasing power output, improving output characteristic curve, improving accuracy and stability

Active Publication Date: 2018-04-17
恒基能脉新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of secondary homogenization equipment has a large optical loss, and the use of special-shaped cells requires special design and manufacture according to the specific light concentrating equipment, resulting in an increase in the cost of the DA-CPV system

Method used

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  • Dense-condensation photovoltaic cell array reducing mismatch loss
  • Dense-condensation photovoltaic cell array reducing mismatch loss
  • Dense-condensation photovoltaic cell array reducing mismatch loss

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Preferably, the connections are made in a square-arranged dense array of four-corner rotationally symmetrical connections. This embodiment adopts as Figure 5 Gaussian distribution lighting conditions shown, choose Figure 6 The 6×6 square concentrating photovoltaic dense battery array shown in the figure has a total of 36 square concentrating photovoltaic cells, the size of each battery is 10mm×10mm, arranged into a 6×6 battery array, and each -36 for numbering. The connection method is as Figure 7 As shown, taking the origin of the coordinate axis as the center and the coordinate axis as the boundary, the cell array is divided into 4 sub-modules, and each sub-module contains 9 concentrating cells that are symmetrical to the center of the origin. Connect the batteries numbered 1, 2, 3, 7, 8, 9, 13, 14, and 15 in parallel, and name it as a square array. The batteries of 11, 12, 16, 17, and 18 are connected in parallel, named as the third module 233 of the four-corn...

Embodiment 2

[0045] Preferably, the connections are made in a dense array arranged in a square with diagonal rotational symmetry. In this embodiment, the following methods are used: Figure 5 Gaussian distribution lighting conditions shown, choose Figure 6 The 6×6 square concentrating photovoltaic dense battery array shown in the figure has a total of 36 square concentrating photovoltaic cells, the size of each battery is 10mm×10mm, arranged into a 6×6 battery array, and each -36 for numbering. The difference from Example 1 is that the connection method of the dense concentrated photovoltaic cell array is as follows: Figure 9 As shown, in order to adapt to different voltage and current requirements, this embodiment adopts a diagonally rotationally symmetrical connection mode to achieve an effective complementarity with Embodiment 1. Connect the batteries numbered 1, 7, 13, 19, 25, and 31 on both sides of the battery array in parallel, name it a square array, connect the first sub-modul...

Embodiment 3

[0047] Preferably, the connection is made in a circular arrangement of dense arrays containing special-shaped cells with four-corner rotational symmetry. The difference from Embodiments 1 and 2 is that the array is circular in shape and consists of 52 photovoltaic cells. Including square concentrating cells and shaped cells. Each cell is connected to form an array and then used in a concentrated photovoltaic power generation system. Its connection method is as Figure 11 As shown, with the origin of the coordinate axis as the center and the coordinate axis as the boundary, the battery array is divided into four sub-parts, which will be numbered as 1, 2, 5, 6, 7, 11, 12, 13, 14, 19, 20 The batteries of , 21, and 22 are connected in parallel, named as a circular arrangement, and the four corners of the special-shaped battery array are rotationally symmetrically connected to the fourth sub-module 254, which will be numbered 3, 4, 8, 9, 10, 15, 16, 17, 18, 23 , 24, 25, and 26 ba...

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Abstract

The invention relates to a dense-condensation photovoltaic cell array reducing mismatch loss, belongs to the technical field of solar energy utilization, and aims at reducing the mismatch loss of thedense cell array under non-uniform radiation and improving the power output of the dense cell array. The dense-condensation photovoltaic cell array of a rotational symmetry structure is divided into sub-modules in rotational symmetry, cells in each sub-module are connected in parallel, serial or full manner or a parallel, serial and full mixed manner, and the sub-modules are connected in series. Connection design with rotational symmetry characteristics enables that power loss caused by current and voltage mismatch of the dense cell array module of a large condenser can be reduced obviously under the real illumination condition with Gaussian or truncated cone-shaped distribution characteristics, power output of the cell array is further improved, and the efficiency, economical performanceand reliability of a dense-condensation photovoltaic cell array power generation system are improved.

Description

technical field [0001] The invention belongs to the technical field of solar energy utilization, and in particular relates to a dense concentrating photovoltaic cell array that reduces mismatch loss. Background technique [0002] Currently, solar photovoltaic power generation has become the third largest renewable energy utilization method. The solar photovoltaic power generation system uses the photovoltaic effect of semiconductor materials to generate electricity, which has the advantages of high efficiency, no moving parts, and the system can be modularized. Solar photovoltaic power generation systems are usually flat-panel photovoltaics, using thin-film batteries or silicon batteries, and the power generation efficiency is about 14-20%. The power generation system using single-axis or multi-axis tracking concentrated photovoltaics usually uses III-V batteries or stacked batteries, the power generation efficiency can reach 25-35%, and the land area occupied by the power ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/048H01L31/052
CPCH01L31/048H01L31/052H01L31/0521Y02E10/50
Inventor 巨星潘信宇徐超周逸挺袁梦迪杜小泽杨勇平
Owner 恒基能脉新能源科技有限公司
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