CN216528918U

CN216528918U - Solar cell panel, photovoltaic module and photovoltaic system

Info

Publication number: CN216528918U
Application number: CN202220010004.8U
Authority: CN
Inventors: 陈军杰; 郑乐; 何晨旭; 徐伟智
Original assignee: Yancheng Zhengtai New Energy Technology Co ltd; Haining Astronergy Technology Co ltd
Current assignee: Yancheng Zhengtai New Energy Technology Co ltd; Chint New Energy Technology Co Ltd
Priority date: 2022-01-04
Filing date: 2022-01-04
Publication date: 2022-05-13
Anticipated expiration: 2032-01-04

Abstract

The utility model provides a solar cell panel which is formed by connecting a plurality of cell strings in series, wherein each cell string is formed by sequentially laminating and welding a plurality of cell sheets, a first cell sheet positioned on the outermost side in any one of the head and tail of the solar cell panel is connected with a second cell sheet adjacent to the first cell sheet through conductive adhesive, and a first cell sheet positioned on the outermost side in any two adjacent cell strings on the head and tail of the solar cell panel is connected through conductive adhesive. The utility model has simple structure and low cost. Through the mode of connecting the battery piece through the conducting resin, subtract the area of converging and converge and take and the space between the battery, reach the effect that reduces photovoltaic module length, reduce the subassembly area. Under the same power, the smaller the area of the component is, the higher the conversion efficiency of the component is, so that the purpose of improving the conversion efficiency of the component is achieved, and the photovoltaic component can be widely applied to photovoltaic components.

Description

Solar cell panel, photovoltaic module and photovoltaic system

Technical Field

The application relates to the field of photovoltaic power generation, in particular to a solar cell panel, a photovoltaic module and a photovoltaic system.

Background

With the development of science and technology, more and more attention is paid to the utilization of energy. The role of photovoltaic power generation technology in life is more and more prominent. The photovoltaic power generation technology can convert light energy into electric energy, and the energy in the nature is fully utilized.

The solar photovoltaic module is a device which is composed of glass, a crystalline silicon cell, a welding strip, a bus bar, a wiring device and other packaging materials and converts light energy into electric energy under the irradiation of sunlight. The conventional photovoltaic module is characterized in that crystalline silicon battery pieces are firstly connected in series to form a whole string and then connected with a conduction circuit through a bus bar, and the bus bar and the distance from the battery pieces to the bus bar are reserved in the battery string composing process due to the design, so that the whole area of the module is too large, and the space is wasted and effectively utilized.

SUMMERY OF THE UTILITY MODEL

In order to solve one of the technical problems, the utility model provides a solar cell panel, a photovoltaic module and a photovoltaic system.

The first aspect of the embodiment of the utility model provides a solar cell panel, which is formed by connecting a plurality of cell strings in series, wherein each cell string is formed by sequentially laminating and welding a plurality of cell sheets, a first cell sheet positioned on the outermost side in any one of the head and tail of the solar cell panel is connected with a second cell sheet adjacent to the first cell sheet through conductive adhesive, and a first cell sheet positioned on the outermost side in any two adjacent cell strings on the head and tail of the solar cell panel is connected through conductive adhesive.

Preferably, the edge of the surface of the second battery piece is coated with a conductive adhesive, the second battery piece coated with the conductive adhesive is in staggered contact with the first battery piece, and the first battery piece covers the conductive adhesive coating area on the second battery piece.

Preferably, the side surface of the outermost first cell in any two adjacent cell strings at the head and the tail of the solar cell panel is coated with a conductive adhesive.

Preferably, one side of the second battery piece is provided with a welding strip, the side provided with the welding strip is welded with the third battery piece through the welding strip, and the other side of the second battery piece is connected with the first battery piece through the conductive adhesive.

Preferably, two sides of any battery piece except the first battery piece and the second battery piece in the battery string are provided with welding strips, and two adjacent battery pieces are welded through the welding strips.

Preferably, the solder strip is in the form of a plurality of strips.

Preferably, the plurality of solder strips are arranged side by side.

Preferably, the plurality of solder strips are arranged at equal intervals.

A second aspect of an embodiment of the present invention provides a photovoltaic module, where the photovoltaic module includes a frame and the solar panel according to the first aspect of the embodiment of the present invention, and the solar panel is fixed in the frame.

A third aspect of embodiments of the present invention provides a photovoltaic system comprising a photovoltaic module according to the second aspect of embodiments of the present invention.

The utility model has the following beneficial effects: the utility model has simple structure and low cost. The mode of connecting the battery piece through the conducting resin subtracts the area of converging and converges the space between area and the battery, reaches and reduces photovoltaic module length, reduces the effect of subassembly area. Under the same power, the smaller the area of the component is, the higher the conversion efficiency of the component is, so that the purpose of improving the conversion efficiency of the component is achieved, and the photovoltaic component can be widely applied to photovoltaic components.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 is a schematic structural diagram of a solar cell panel according to embodiment 1 of the present invention;

fig. 2 is a partially enlarged view of a solar cell panel according to embodiment 1 of the present invention.

Reference numerals:

1. the second battery piece of M battery cluster, 2, the second battery piece of N battery cluster adjacent with M battery cluster, 3, the first battery piece of M battery cluster, 4, the first battery piece of N battery cluster, 5, conducting resin, 6, weld the area.

Detailed Description

In order to make the technical solutions and advantages of the embodiments of the present application more apparent, the following further detailed description of the exemplary embodiments of the present application with reference to the accompanying drawings makes it clear that the described embodiments are only a part of the embodiments of the present application, and are not exhaustive of all embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

Example 1

The embodiment provides a solar cell panel, solar cell panel is concatenated by a plurality of battery strings and is formed, every battery string is folded by a plurality of battery pieces in proper order and is pressed the welding and form, is located the first battery piece in the outside in arbitrary battery string of solar cell panel head and afterbody with connect through conducting resin between the second battery piece that first battery piece is adjacent, is located connect through conducting resin between the first battery piece in the outside in arbitrary two adjacent battery strings of solar cell panel head and afterbody.

The conventional solar cell panel is formed by sequentially laminating, welding and connecting cell sheets in series to form a cell string. This solar panel structure requires both the header and the footer to be connected to the bus bars, so that the cell strings on the entire solar panel form a complete path through the bus bars.

The solar cell panel provided by the embodiment connects the outermost first cell piece and the outermost second cell piece in any cell string at the head and the tail through the conductive adhesive. The second battery piece is adjacent to the first battery piece. And then the outermost first battery pieces in any two adjacent battery strings at the head and the tail of the solar panel are connected through the conductive adhesive.

Specifically, as shown in fig. 1 and 2, 10 battery pieces are provided in one battery string as an example. Wherein, 1 denotes a second cell (9 th cell) of the M cell string, 3 denotes a first cell (10 th cell) of the M cell string, 2 denotes a second cell (9 th cell) of the N cell string adjacent to the M cell string, 4 denotes a first cell (10 th cell) of the N cell string, and 5 is a conductive adhesive. According to the solar cell panel structure provided by the embodiment, namely, 1 and 3, 2 and 4 of the cell strings at the head and the tail of the solar cell panel are connected through the

conductive adhesive

5, and 3 and 4 of two adjacent cell strings at the head and the tail are connected through the conductive adhesive 5, so that a complete circuit is formed between the two cell strings.

Furthermore, in this embodiment, the edge of the surface of the second battery piece is coated with the conductive adhesive, and then the surface of the second battery piece coated with the conductive adhesive is in staggered contact with the first battery piece, and the first battery piece is ensured to completely cover the conductive adhesive covering area on the second battery piece. Meanwhile, a solder strip 6 is disposed on a surface of the second cell piece, which is not coated with the conductive adhesive, so that a third cell piece adjacent to the second cell piece can be welded to the second cell piece through the solder strip 6, as shown in fig. 2. Correspondingly, the side surfaces of the first battery sheets of the two adjacent battery strings at the head part and the tail part are also coated with conductive glue, and then the two first battery sheets are connected together through the conductive glue, so that a circuit is formed between the two adjacent battery strings at the head part and the tail part.

Furthermore, in the present embodiment, the welding strips 6 are disposed on both sides of any battery piece except the first battery piece and the second battery piece, and two adjacent battery pieces are welded by the welding strips 6. Wherein, it can be many to weld the area, and many weld the side by side setting that the area can equidistant to guarantee the stability between welding quality and the battery piece.

For example, a battery string has 10 battery pieces, except that the 10 th battery piece and the 9 th battery piece are connected by conductive adhesive, the other 8 battery pieces are still connected by conventional welding strips 6.

Example 2

The embodiment provides a photovoltaic module, which at least comprises a frame and a solar panel, wherein the solar panel is fixed in the frame. The specific structure and the working principle of the solar cell panel may refer to the content described in embodiment 1, and this embodiment is not described again.

The embodiment subtracts the space between the bus bar and the battery and reduces the length of the photovoltaic module and the area of the module by connecting the battery pieces with the conductive adhesive. Under the same power, the smaller the area of the component is, the higher the conversion efficiency of the component is, so that the purpose of improving the conversion efficiency of the component is achieved, and the photovoltaic component can be widely applied to photovoltaic components.

Example 3

The present embodiment provides a photovoltaic system, which includes the photovoltaic module described in embodiment 2.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. The utility model provides a solar cell panel, solar cell panel is concatenated by a plurality of battery strings and is formed, every the battery string is folded in proper order by a plurality of battery pieces and is pressed the welding and form, its characterized in that, be located the first battery piece in the outside in arbitrary battery string of solar cell panel head and afterbody with connect through conducting resin between the second battery piece that first battery piece is adjacent, be located connect through conducting resin between the first battery piece in the outside in arbitrary two adjacent battery strings of solar cell panel head and afterbody.

2. The solar panel according to claim 1, wherein the surface edge of the second cell piece is coated with a conductive adhesive, the second cell piece coated with the conductive adhesive is in staggered contact with the first cell piece, and the first cell piece covers the conductive adhesive coating area on the second cell piece.

3. The solar panel as claimed in claim 1, wherein the side of the outermost first cell piece in any two adjacent cell strings at the head and tail of the solar panel is coated with a conductive adhesive.

4. The solar panel according to claim 1, wherein a solder strip is disposed on one surface of the second cell, the surface on which the solder strip is disposed is soldered to a third cell through the solder strip, and the other surface of the second cell is connected to the first cell through the conductive adhesive.

5. The solar panel according to claim 4, wherein solder strips are disposed on both sides of any cell except the first cell and the second cell in the cell string, and two adjacent cells are soldered by the solder strips.

6. Solar panel as claimed in claim 4 or 5, characterised in that the solder strip is in the form of a plurality of strips.

7. Solar panel as claimed in claim 6, characterised in that a plurality of solder strips are arranged side by side.

8. The solar panel as claimed in claim 7, wherein the plurality of solder strips are arranged at equal intervals.

9. A photovoltaic module comprising a frame and a solar panel as claimed in any one of claims 1 to 8, the solar panel being secured in the frame.

10. A photovoltaic system comprising the photovoltaic module of claim 8.