Solar battery component

A technology of solar cells and batteries, which is applied in the field of solar energy, can solve the problems of reduced power output of solar cell components and large electrical losses of interconnection strips, and achieve the effects of improving hot spot power loss, reducing series resistance, and reducing electrical losses

Inactive Publication Date: 2017-07-18
TRINA SOLAR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing connection method not only causes a large electrical loss caused by the interconnection strips, but also when the solar cell module encounters a horizontal shadow blocking 100% of the area of ​​each single cell in a string when it is installed vertically, the current and voltage of the cell will occur. If there is a change, the power output of the solar cell module will be greatly reduced, almost to zero

Method used

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Examples

Experimental program
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Embodiment 1

[0030] Such as image 3 As shown, in this embodiment, one or more series-coupled or parallel-coupled battery cells (not shown in the figure) are included, and the battery unit includes one or more series-coupled battery string series (not shown in the figure), and the battery The string series includes one or more battery strings 1 coupled in series through bus bars, and the battery string 1 includes a plurality of battery slices 11 coupled in series through interconnection bars 2; The polarities of adjacent cell sheets 11 are the same.

[0031] In the present invention, the complete solar cells are cut into a plurality of cells 11 of the same specification by a slicing process, such as a size of 156*78mm, etc., and then the plurality of cells 11 are spliced ​​by interconnecting strips 2 to obtain a battery string 1, and then A battery string series is obtained by splicing multiple battery strings 1 through bus bars 2 . In the present invention, by changing the interconnecti...

Embodiment 2

[0033] Such as Figure 4 As shown, the difference between this embodiment and Embodiment 1 is that the battery string series 4 includes a plurality of battery strings 1, wherein two or more adjacent battery strings 1 are connected by bus bars 3, and the connection points The polarity of the two battery slices 11 is the same, and the interconnection direction of the battery slices 11 in the battery string 1 is consistent, that is, the polarity of the battery slices 11 in the battery string 1 is positive, negative, positive...negative, positive, negative or negative, Positive, negative... Positive, negative, positive, etc., and by rotating the battery string 1 to keep the two battery strings 1 in the opposite interconnection direction and splicing through the bus bar 3, the battery string series 4 is obtained. In the present invention, the polarity of interconnection between the nth battery slice and the n+1th battery slice in the battery string 1 is the same, where 1≤n≤? , pre...

Embodiment 3

[0035] Such as Figure 5 As shown, the difference between this embodiment and embodiment 2 is that the battery pieces 11 at both ends of one or more battery strings 1 are welded with integrated bus bars connected to the interconnection bars 2 on the battery pieces 11 at both ends, wherein Two or more adjacent battery strings in the series of battery strings are connected by an integrated bus bar, and the polarity of the two battery slices 11 at the connection is the same.

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Abstract

The invention discloses a solar cell module, comprising one or more series-coupled or parallel-coupled battery units, said battery unit comprising one or more series-coupled battery string series, said battery string series comprising one or more A battery string coupled in series by a bus bar, the battery string comprising a plurality of battery slices coupled in series by an interconnection bar; wherein two adjacent battery slices in the battery string connected by an interconnection bar have the same polarity, and Or, when the series of battery strings includes multiple battery strings, two or more adjacent battery strings are connected by bus bars, and the polarities of the two battery slices at the connection are the same. In the present invention, when solar modules are installed vertically, if 100% of the monolithic cells in each string are covered by lateral shadows, the power output of the modules will still be half of the output, so the invention reduces the electrical loss of solar cell modules and improves Solar module hot spot power loss.

Description

technical field [0001] The invention belongs to the technical field of solar energy, and in particular relates to a solar cell assembly. Background technique [0002] Sunlight shines on the semiconductor p-n junction to form new hole-electron pairs. Under the action of the electric field of the p-n junction, holes flow from the n region to the p region, and electrons flow from the p region to the n region. After the circuit is turned on, a current is formed. This is how photoelectric effect solar cells work. [0003] There are two ways of solar power generation, one is light-heat-electricity conversion, and the other is light-electricity direct conversion. The light-electricity direct conversion method uses the photoelectric effect to directly convert solar radiation energy into The smallest indivisible solar cell combination device with external packaging and internal connection, which can provide DC output alone, is called a solar cell module, that is, multiple single sol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/05
CPCY02E10/50H01L31/0504
Inventor 郭俊盼戴伟夏顺王乐
Owner TRINA SOLAR CO LTD
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