CN-122029961-A - Solar cell module

CN122029961ACN 122029961 ACN122029961 ACN 122029961ACN-122029961-A

Abstract

Provided is a solar cell module wherein a non-power generation region is not formed in the center. The solar cell module is provided with a first thin film solar cell sub-module (10A) and a second thin film solar cell sub-module (10B) which are adjacent to each other in a first direction on a transparent substrate (12), wherein the first sub-module (10A) has a first integrated structure, and the second sub-module (10B) has a second integrated structure. The first and second integrated structures have a first separation groove for separating the first transparent electrode layer (24) in a first direction, a second separation groove for separating the second conductive type charge transport layer (23), the photoelectric conversion layer (21), and the first conductive type charge transport layer (22) in the first direction, and a third separation groove for separating the second electrode layer (25) in the first direction, and the first and second integrated structures are of a line-symmetrical structure, and a third separation groove (P3), a second separation groove (P2), and a first separation groove (P1) are arranged in this order from the center between the first and second integrated structures toward the end in the first direction.

Inventors

NAKAMURA JUNICHI
TERASHITA TAKASHI
KOJIMA KOHEI

Assignees

株式会社钟化

Dates

Publication Date: 20260512
Application Date: 20241018
Priority Date: 20231019

Claims (6)

1. A solar cell module is characterized in that, Comprising a first thin film solar cell sub-module and a second thin film solar cell sub-module adjacent to each other in a first direction on a transparent substrate, The first thin film solar cell sub-module has a first integrated configuration in which a plurality of first thin film solar cell cells are connected in series in the first direction, the plurality of first thin film solar cell cells being divided in the first direction and extending in a second direction intersecting the first direction, The second thin film solar cell sub-module has a second integrated structure in which a plurality of second thin film solar cell cells are connected in series in the first direction, the plurality of second thin film solar cell cells being divided in the first direction and extending in the second direction, Each of the plurality of first thin film solar cell units and each of the plurality of second thin film solar cell units has a first transparent electrode layer, a first conductive type charge transport layer, a photoelectric conversion layer, a second conductive type charge transport layer, and a second electrode layer in this order from the transparent substrate side, The first integrated configuration and the second integrated configuration have a first separation groove, a second separation groove, and a third separation groove extending in the second direction, the first separation groove separating the first transparent electrode layer in the first direction, the second separation groove separating the second conductive type charge transporting layer, the photoelectric conversion layer, and the first conductive type charge transporting layer in the first direction, the third separation groove separating the second electrode layer in the first direction, The first integrated configuration and the second integrated configuration are symmetrical configurations about a straight line along the second direction, The first integrated structure and the second integrated structure are provided with the third separation groove, the second separation groove, and the first separation groove in this order from a center between the first integrated structure and the second integrated structure toward an end in the first direction.
2. The solar cell module according to claim 1, wherein, The second electrode layer of the first thin film solar cell on the second thin film solar cell sub-module side of the first thin film solar cell sub-module is connected to the second electrode layer of the second thin film solar cell on the first thin film solar cell sub-module side of the second thin film solar cell sub-module by a wiring member, The second electrode layer of the first thin film solar cell on the opposite side of the first thin film solar cell sub-module from the second thin film solar cell sub-module is connected to the second electrode layer of the second thin film solar cell on the opposite side of the second thin film solar cell sub-module from the first thin film solar cell sub-module by a wiring member, Whereby the first and second thin film solar cell sub-modules are connected in parallel.
3. The solar cell module according to claim 1, wherein, A first thin film solar cell on the side of the second thin film solar cell sub-module in the first thin film solar cell sub-module and a second thin film solar cell on the side of the first thin film solar cell sub-module in the second thin film solar cell sub-module are power generation regions, A first thin film solar cell of the first thin film solar cell sub-module on a side opposite to the second thin film solar cell sub-module and a second thin film solar cell of the second thin film solar cell sub-module on a side opposite to the first thin film solar cell sub-module are non-power generation regions, In the first thin film solar cell sub-module, a width of a first thin film solar cell on a side opposite to the second thin film solar cell sub-module in the first direction is smaller than a width of other first thin film solar cell cells in the first direction, In the second thin film solar cell sub-module, a width of the second thin film solar cell on a side opposite to the first thin film solar cell sub-module in the first direction is smaller than a width of the other second thin film solar cell cells in the first direction.
4. The solar cell module according to claim 3, wherein, In the first thin film solar cell sub-module, a width of the first thin film solar cell on the second thin film solar cell sub-module side in the first direction is larger than a width of the first direction of the other first thin film solar cell cells, In the second thin film solar cell sub-module, a width of the first direction of the second thin film solar cell on the first thin film solar cell sub-module side is larger than a width of the first direction of the other second thin film solar cell cells.
5. The solar cell module according to any one of claim 1 to 4, wherein, The transparent substrate is a single substrate.
6. The solar cell module according to any one of claim 1 to 4, wherein, The transparent substrate comprises a first transparent substrate and a second transparent substrate which are separated, The first thin film solar cell sub-module is formed on the first transparent substrate, The second thin film solar cell sub-module is formed on the second transparent substrate.

Description

Solar cell module Technical Field The present invention relates to a solar cell module. Background Patent documents 1 and 2 disclose solar cell modules including perovskite (thin film) solar cell sub-modules. The solar cell sub-module includes a plurality of perovskite (thin film) solar cell units, each of which is divided in a first direction (integration direction) on a transparent substrate, extends in a second direction intersecting the first direction, and is connected in series to be integrated. The solar cell includes, in order from the transparent substrate side, a first transparent electrode layer, a first conductive charge transport layer, a photoelectric conversion layer, a second conductive charge transport layer, and a second electrode layer. Patent document 1 Japanese patent application laid-open No. 2018-157175 Patent document 2 Japanese patent application laid-open No. 2018-157176 In such an integrally constructed solar cell sub-module, the current is high, and the resistance loss at the transparent electrode layer becomes large, thus reducing the width of the solar cell. In this case, the number of layers of the integrated structure increases, and the voltage increases. In this regard, in the solar cell sub-module of the integrated structure, it is considered that two solar cell sub-modules are formed in line symmetry (split) in a first direction (integration direction), the centers are connected to each other, and the end portions are connected to each other, and are connected in parallel. In the case where two solar cell sub-modules are formed in line symmetry (split) in this way, the second electrode layers on the side away from the transparent substrate are connected to each other in the solar cell cells adjacent to each other at the center (see fig. 4). In this case, however, the solar cell adjacent to the center becomes a non-power generation region where electric power cannot be taken out. When the solar cell sub-module is formed on one transparent substrate, for example, for reasons of film formation, the power generation efficiency is higher in the center than in the end portions, and therefore, it is preferable that a non-power generation region is not formed in the center. Disclosure of Invention The invention aims to provide a solar cell module which does not form a non-power generation region in the center. The solar cell module according to the present invention includes a first thin film solar cell sub-module and a second thin film solar cell sub-module adjacent to each other in a first direction on a transparent substrate, the first thin film solar cell sub-module having a first integrated structure in which a plurality of first thin film solar cells are connected in series in the first direction, the plurality of first thin film solar cells being divided in the first direction and extending in a second direction intersecting the first direction, the second thin film solar cell sub-module having a second integrated structure in which a plurality of second thin film solar cells are connected in series in the first direction, the plurality of second thin film solar cells being divided in the first direction and extending in the second direction, each of the plurality of first thin film solar cells and each of the plurality of second thin film solar cells having a first electrode, a first conductive layer, a first transparent electrode, and a second conductive layer, and a charge transport layer in this order from the substrate side. The first integrated structure and the second integrated structure include a first separation groove, a second separation groove, and a third separation groove extending in the second direction, the first separation groove separates the first transparent electrode layer in the first direction, the second separation groove separates the second conductive charge transport layer, the photoelectric conversion layer, and the first conductive charge transport layer in the first direction, the third separation groove separates the second electrode layer in the first direction, the first integrated structure and the second integrated structure are structures that are line-symmetrical with respect to a straight line along the second direction, and the first integrated structure and the second integrated structure are sequentially arranged with the third separation groove, the second separation groove, and the first separation groove from a center between the first integrated structure and the second integrated structure toward an end portion. According to the present invention, the solar cell module does not form a non-power generation region in the center. Drawings Fig. 1 is a schematic cross-sectional view of a solar cell module according to a first embodiment. Fig. 2 is a schematic cross-sectional view of a solar cell sub-module in the solar cell module shown in fig. 1. Fig. 3 is a schematic plan view showing a solar cell sub-module in the solar cell mod