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Photovoltaic module with novel battery string connection structure

A photovoltaic module and connection structure technology, applied in photovoltaic power generation, circuits, electrical components, etc., can solve the problems of increasing the recovery period, the investment of related cable costs, and affecting the use of cables, so as to reduce the use of wires and improve the safety factor. , the effect of reducing internal resistance consumption

Pending Publication Date: 2017-10-24
无锡军工智能电气股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, most of the string methods used in domestic photovoltaic power generation projects adopt the method of "single-row series connection with 4 square cables at the end and connection with MC4 connectors", which greatly reduces the power generation efficiency and cost input of modules, and makes the economic benefits of the entire photovoltaic system It is reduced, and the payback period is also increased. On the other hand, this string connection method also affects the use of cables, which is related to the investment in cable costs. Now most companies focus on the completion of the project and do not pay attention to photovoltaic power generation. efficiency research

Method used

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  • Photovoltaic module with novel battery string connection structure
  • Photovoltaic module with novel battery string connection structure
  • Photovoltaic module with novel battery string connection structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment example 1

[0026] Depend on figure 1 , figure 2 It can be seen that each photovoltaic module 1 is composed of M (M=120) cells 2, and the M cells 2 are divided into P (P=3) groups, and each group of cells 2 is divided into left and right groups. , the right two parts,

[0027] The battery slices 2 of the battery string I6 in the first group are distributed in the column I (I is within the integer range of 1-7) and the row J (J=1, 2, 3), and the battery slices 2 of the battery string II7 are distributed in the I ( I is in the range of 8-14 integers) column, J (J=1, 2, 3) row;

[0028] Taking the battery string I6 as an example, the figure 2 It can be seen that one end of the wire 5 is fixed on the battery sheet 2 with J=1 and I=7, and the other end of the wire 5 crosses the first row, and then connects with the battery sheet with J=2, I=1, J=3, I=7 in sequence. =1 cell, J=3, I=2 cell, J=2, I=2 cell, J=2, I=3 cell, J=3, I=3 cell, J=3, I =4 cells, J=2, I=4 cells, J=2, I=5 cells, J=3,...

Embodiment example 2

[0033] Depend on Figure 5 , Figure 6 It can be seen that each photovoltaic module 1 is composed of M (M=132) cells 2, and the M cells 2 are divided into P (P=3) groups, and each group of cells 2 is divided into left and right groups. , the right two parts,

[0034] The battery slices 2 of the battery string I6 in the first group are distributed in column I (I is within the integer range of 1-6) and row J (J=1, 2, 3, 4), and the battery slices 2 of battery string II7 are distributed in I (I is within the integer range of 7-12) column, J (J=1, 2, 3, 4) row;

[0035] Taking the battery string II7 as an example, the figure 2 It can be seen that one end of the wire 5 is fixed on the battery sheet 2 with J=1 and I=12, and the other end of the wire 5 crosses the first row, and then connects with the battery sheet with J=2, I=7, J=2, I=7 in sequence. =8 cells, J=3, I=8 cells, J=3, I=7 cells, J=4, I=7 cells, J=4, I=8 cells, J=4, I =9 cells, J=3, I=9 cells, J=2, I=9 cells, J=2, ...

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Abstract

The invention provides a photovoltaic module with a novel battery string connection structure, which comprises battery pieces and wires, and is characterized in that each photovoltaic module is composed of M battery pieces, the M battery pieces are divided into P groups, the battery pieces located in the same group are connected in series through the wires and then form battery strings, each group of battery pieces forms at least two mutually independent battery strings, and the battery pieces located in different groups are mutually independent. The scheme provided by the invention reduces the use of MC4 connectors and the use of wires, reduces the material cost, reduces the internal resistance of the MC4 connector and the wires and reduces the internal resistance consumption. In addition, a phenomenon of disordered wires does not occur, the installation beautifulness of the photovoltaic module is increased, and the safety coefficient of wire connection is improved.

Description

technical field [0001] The invention relates to the field of photovoltaic technology, in particular to a photovoltaic module with a novel battery string connection structure. Background technique [0002] In recent years, with my country's encouragement and support for the new energy industry, the scale of the photovoltaic industry has also become larger and larger, and the requirements for the reliability and economy of photovoltaic power generation have also become higher and higher. The most basic and original technology has not been fully utilized. [0003] At present, most of the string methods used in domestic photovoltaic power generation projects adopt the method of "single-row series connection with 4 square cables at the end and connection with MC4 connectors", which greatly reduces the power generation efficiency and cost input of modules, and makes the economic benefits of the entire photovoltaic system It is reduced, and the payback period is also increased. On ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/05
CPCH01L31/0504Y02E10/50
Inventor 周鑫诚何进平骁阳庞建峰濮垚
Owner 无锡军工智能电气股份有限公司
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