CN219435887U

CN219435887U - Semitransparent film photovoltaic assembly

Info

Publication number: CN219435887U
Application number: CN202223543365.8U
Authority: CN
Inventors: 吴志力; 陈龙; 杨圣杰
Original assignee: Taizhou Jinneng New Energy Co ltd
Current assignee: Taizhou Jinneng New Energy Co ltd
Priority date: 2022-12-29
Filing date: 2022-12-29
Publication date: 2023-07-28
Anticipated expiration: 2032-12-29

Abstract

The utility model discloses a semitransparent film photovoltaic assembly, which comprises a photovoltaic assembly body, wherein the photovoltaic assembly body comprises cover plate glass and a plurality of battery units arranged on the cover plate glass, and the battery units are connected in parallel through conductive elements; the battery units are arranged on the cover plate glass at intervals, and the area on the cover plate glass, where the battery units are not arranged, is a light-transmitting area. According to the utility model, the integrated thin film photovoltaic cell is cut into a plurality of battery units, the battery units are rearranged to cover plate glass according to the transmittance requirement, and the battery units are connected in parallel to form a semitransparent thin film photovoltaic module; the metal film layer is prevented from being removed by laser, so that extra resistance loss is caused, the requirements of different light transmittance are met only by cutting and rearranging the unit cells, and the applicability in the field of construction is increased; the battery units are connected in parallel, current matching is not needed to be considered, the sizes of the battery units are not needed to be consistent, and cutting and rearrangement are more flexible.

Description

Semitransparent film photovoltaic assembly

Technical Field

The utility model relates to the field of solar cells, in particular to a semitransparent film photovoltaic module.

Background

The integrated photovoltaic building is a new concept of applying solar power generation, namely simply installing a solar photovoltaic power generation matrix on the outer surface of an enclosure structure of the building to provide power. According to the different modes of combining the photovoltaic array and the building, the photovoltaic building integration can be divided into two main types: one type is the combination of photovoltaic arrays with buildings. Another type is the integration of photovoltaic arrays with buildings. Such as photoelectric tile roofs, photoelectric curtain walls, photoelectric daylighting roofs and the like. In both ways, the combination of the photovoltaic array with the building is a common form, in particular with the roof of the building. The combination of the photovoltaic square matrix and the building does not occupy extra ground space, so that the photovoltaic power generation system is an optimal installation mode widely applied to cities, and is paid attention.

When the solar photovoltaic power generation square matrix is applied to a building roof, sometimes a light transmission effect is required, and particularly the solar photovoltaic power generation square matrix is applied to occasions needing sunlight transmission such as sunlight rooms, and the solar photovoltaic power generation square matrix usually adopts a thin film solar cell, and a light transmission component is difficult to manufacture due to the fact that a metal film layer is opaque; therefore, a power generation area and a light transmission area are arranged on the thin film solar cell module, and the light transmission area realizes light transmission by removing the metal film layer, and as part of the metal film layer is removed, the series resistance in the module is increased, so that additional electrical loss is caused; meanwhile, the metal film layer needs to be removed through laser scribing in the light-transmitting area, so that the operation is complex, and the production efficiency is low.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a semitransparent film photovoltaic assembly and solves the problem that the performance of a battery is influenced by removing a film layer of the traditional semitransparent film photovoltaic assembly.

The technical scheme adopted by the utility model for solving the technical problems is to provide a semitransparent film photovoltaic module, which comprises a photovoltaic module body, wherein the photovoltaic module body comprises cover glass and a plurality of battery units arranged on the cover glass, and the battery units are connected in parallel through conductive elements; the battery units are arranged on the cover plate glass at intervals, and the area on the cover plate glass, where the battery units are not arranged, is a light-transmitting area.

Further, the battery unit is formed by cutting an integrated thin film photovoltaic cell; the integrated thin-film photovoltaic cell comprises a substrate layer, a back electrode layer, a photoelectric conversion layer and a conductive electrode layer which are sequentially arranged, wherein a plurality of groups of grooving structures are arranged in the integrated thin-film photovoltaic cell, and each grooving structure comprises a P1 grooving structure, a P2 grooving structure and a P3 grooving structure; the grooved structure divides the integrated thin film photovoltaic cell into a plurality of subcells and is connected in series by a conductive electrode layer.

Further, each of the battery cells includes a plurality of sub-cells connected in series.

Further, the conductive element is a conductive sheet, the conductive sheet comprises a positive conductive sheet and a negative conductive sheet, and the positive conductive sheet and the negative conductive sheet are respectively arranged at two ends of the battery unit; the positive electrode conducting plate is connected with the positive electrodes of the battery units, and the negative electrode conducting plate is connected with the negative electrodes of the battery units.

Further, a gluing layer is arranged between the battery unit and the cover plate glass, and the battery unit and the cover plate glass are glued into a whole by the gluing layer.

Further, the material of the cementing layer is EVA or PVB.

Further, the conductive sheet is made of copper or copper/tin alloy.

Compared with the prior art, the utility model has the following beneficial effects: according to the semitransparent film photovoltaic module provided by the utility model, the integrated film photovoltaic cell is cut into a plurality of battery units, the battery units are rearranged to cover plate glass according to the transmittance requirement, and the battery units are connected in parallel to form the semitransparent film photovoltaic module; the metal film layer is prevented from being removed by laser, so that extra resistance loss is caused, the requirements of different light transmittance are met only by cutting and rearranging the unit cells, and the applicability in the field of construction is increased; because the battery units are connected in parallel, current matching does not need to be considered, the sizes of the battery units do not need to be consistent, and cutting and rearrangement are more flexible.

Drawings

Fig. 1 is a schematic structural diagram of a semitransparent film photovoltaic module according to an embodiment of the present utility model.

In the figure:

1. cover glass; 2. a battery unit; 3. a light-transmitting region; 4. a conductive element.

Detailed Description

The utility model is further described below with reference to the drawings and examples.

Referring to fig. 1, the semitransparent film photovoltaic module according to the embodiment of the present utility model includes a photovoltaic module body including a cover glass 1 and a plurality of battery cells 2 disposed on the cover glass 1, wherein the plurality of battery cells 2 are connected in parallel through conductive elements 4; the plurality of battery cells 2 are arranged on the cover glass 1 at intervals, and the area of the cover glass 1, where the battery cells 2 are not arranged, is a light-transmitting area 3.

Specifically, the battery unit 2 is cut from an integral thin film photovoltaic cell; the integrated thin-film photovoltaic cell comprises a substrate layer, a back electrode layer, a photoelectric conversion layer and a conductive electrode layer which are sequentially arranged, wherein a plurality of groups of grooving structures are arranged in the integrated thin-film photovoltaic cell, and each grooving structure comprises a P1 grooving, a P2 grooving and a P3 grooving; the grooved structure divides the integrated thin film photovoltaic cell into a plurality of subcells and is connected in series by the conductive electrode layer. Each battery cell 2 includes a plurality of sub-batteries connected in series.

Preferably, the conductive element 4 is a conductive sheet, and the conductive sheet includes a positive conductive sheet and a negative conductive sheet, which are respectively disposed at two ends of the battery unit 4; the positive electrode conductive sheet is connected to the positive electrodes of the plurality of battery cells 2, and the negative electrode conductive sheet is connected to the negative electrodes of the plurality of battery cells 2. The conductive sheet is made of copper. The conductive element 4 may be a wire, and the conductive element 4 may be made of silver with better conductivity, and copper or copper/tin alloy material is selected for cost.

Specifically, a glue layer is provided between the battery unit 2 and the cover glass 1, and the glue layer bonds the battery unit 2 and the cover glass 1 into a whole. Preferably, the material of the adhesive layer is EVA (ethylene-vinyl acetate copolymer) or PVB (polyvinyl butyral).

When the semitransparent film photovoltaic module is manufactured, firstly, an integrated film photovoltaic cell is manufactured, then the integrated film photovoltaic cell is cut into small-size battery units 2, a bonding layer is paved on cover glass 1, the battery units 2 are rearranged on the bonding layer, and conductive elements 4 are connected with the battery units 2 to enable the battery units 2 to be connected in parallel; finally, heating lamination is carried out, so that the bonding layer is in a molten state to bond the battery unit 2 and the cover glass 1 into a whole to form a semitransparent film photovoltaic module.

According to the semitransparent film photovoltaic module provided by the utility model, the integrated film photovoltaic cell is cut into a plurality of battery units, the battery units 2 are rearranged to the cover plate glass 1 according to the transmittance requirement, and the battery units 2 are connected in parallel to form the semitransparent film photovoltaic module; the metal film layer is prevented from being removed by laser, so that extra resistance loss is caused, the requirements of different light transmittance are met only by cutting and rearranging the battery units 2, and the applicability in the field of construction is increased; since the battery cells 2 are connected in parallel, current matching is not required to be considered, the battery cells 2 are not required to be uniform in size, and cutting and rearrangement are more flexible.

While the utility model has been described with reference to the preferred embodiments, it is not intended to limit the utility model thereto, and it is to be understood that other modifications and improvements may be made by those skilled in the art without departing from the spirit and scope of the utility model, which is therefore defined by the appended claims.

Claims

1. The semitransparent film photovoltaic module is characterized by comprising a photovoltaic module body, wherein the photovoltaic module body comprises cover plate glass and a plurality of battery units arranged on the cover plate glass, and the battery units are connected in parallel through conductive elements; the battery units are arranged on the cover plate glass at intervals, and the area on the cover plate glass, where the battery units are not arranged, is a light-transmitting area.

2. The translucent thin-film photovoltaic module of claim 1, wherein the cell unit is cut from an integral thin-film photovoltaic cell; the integrated thin-film photovoltaic cell comprises a substrate layer, a back electrode layer, a photoelectric conversion layer and a conductive electrode layer which are sequentially arranged, wherein a plurality of groups of grooving structures are arranged in the integrated thin-film photovoltaic cell, and each grooving structure comprises a P1 grooving structure, a P2 grooving structure and a P3 grooving structure; the grooved structure divides the integrated thin film photovoltaic cell into a plurality of subcells and is connected in series by a conductive electrode layer.

3. The translucent thin film photovoltaic module of claim 2 wherein each of the battery cells comprises a plurality of sub-cells connected in series.

4. The translucent thin-film photovoltaic module of claim 1, wherein the conductive element is a conductive sheet, the conductive sheet comprising a positive conductive sheet and a negative conductive sheet, the positive conductive sheet and the negative conductive sheet being disposed at two ends of the cell, respectively; the positive electrode conducting plate is connected with the positive electrodes of the battery units, and the negative electrode conducting plate is connected with the negative electrodes of the battery units.

5. The translucent thin-film photovoltaic module of claim 1, wherein a glue layer is provided between the battery cell and the cover glass, the glue layer bonding the battery cell and the cover glass together.

6. The translucent thin film photovoltaic module of claim 5, wherein the glue layer is EVA or PVB.

7. The translucent thin film photovoltaic module of claim 4 wherein the conductive sheet is copper or a copper/tin alloy.