CN210429843U

CN210429843U - Photovoltaic module

Info

Publication number: CN210429843U
Application number: CN201921342232.XU
Authority: CN
Inventors: 覃冬梅; 车伏龙; 赵志刚; 蒋世用; 刘秤明
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2019-08-16
Filing date: 2019-08-16
Publication date: 2020-04-28
Anticipated expiration: 2029-08-16

Abstract

The utility model discloses a photovoltaic module, photovoltaic module includes: the battery string comprises a plurality of battery pieces arranged at intervals, a gap is formed between every two adjacent battery pieces, the front side of each battery piece is connected with a first conductive medium, and the back side of each battery piece is connected with a second conductive medium; the battery piece fixing device comprises a glass substrate, a plurality of battery pieces and a plurality of grooves, wherein the plurality of battery pieces are arranged on the glass substrate; the convex strip is provided with a first conductive contact point and a second conductive contact point, and the first conductive contact point is conducted with the second conductive contact point; the first conductive contact point is abutted with the first conductive medium of one corresponding battery piece, and the second conductive contact point is abutted with the second conductive medium of the other corresponding battery piece. The utility model provides a photovoltaic module has solved the problem that photovoltaic module product yield is low among the prior art effectively.

Description

Photovoltaic module

Technical Field

The utility model relates to a photovoltaic technology field particularly, relates to a photovoltaic module.

Background

In the prior art, all the cells of the photovoltaic module are welded into a string by a string welding machine, referring to the structure shown in fig. 1, in the welding process, a gap of several millimeters is reserved between the adjacent cells 101, and the welding strip 102 connecting the cells 101 can form a bend similar to a zigzag shape between the gaps of the cells, so as to ensure that the cells are basically positioned on the same plane. However, due to the existence of the solder strip, a certain height difference exists between the two battery pieces, and in the later lamination and lamination process, the contact part between the edge of the battery piece and the solder strip is prone to have the conditions of hidden cracking, edge breakage and even splitting under the action of external force, so that the product yield is low.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides an in provide a photovoltaic module to solve the problem that photovoltaic module product yield is low among the prior art.

In order to achieve the above object, the utility model provides a photovoltaic module, include: the battery string comprises a plurality of battery pieces arranged at intervals, a gap is formed between every two adjacent battery pieces, the front side of each battery piece is connected with a first conductive medium, and the back side of each battery piece is connected with a second conductive medium; the battery piece fixing device comprises a glass substrate, a plurality of battery pieces and a plurality of grooves, wherein the plurality of battery pieces are arranged on the glass substrate; the convex strip is provided with a first conductive contact point and a second conductive contact point, and the first conductive contact point is conducted with the second conductive contact point; the first conductive contact point is abutted with the first conductive medium of one corresponding battery piece, and the second conductive contact point is abutted with the second conductive medium of the other corresponding battery piece.

Furthermore, each convex strip is provided with a plurality of groups of conductive adhesives, and each group of conductive adhesives is provided with a first conductive contact point and a second conductive contact point.

Furthermore, the number of the groups of the conductive adhesive corresponds to the number of the main grid lines on the front surface of the battery piece, and each conductive adhesive is arranged in one-to-one correspondence with the main grid lines on the front surface of the battery piece.

Furthermore, the convex strip portion is provided with two sides corresponding to the adjacent battery pieces, and the first conductive contact point and the second conductive contact point are respectively positioned on the two sides of the convex strip portion.

Furthermore, an encapsulation adhesive film is arranged between the battery piece and the glass substrate, and the superposed height of the first conductive medium, the battery piece, the second conductive medium and the encapsulation adhesive film is equal to the height of the convex strip part protruding from the glass substrate

Further, the battery piece is in interference fit with the convex strip portion.

Further, a conductive member is arranged inside the raised strip portion, and the first conductive contact point and the second conductive contact point are conducted through the conductive member.

Further, all the convex strip parts are in conductive connection with the battery sheets to form a battery string.

Further, the battery piece is any one of the following: the battery comprises a single-crystal battery piece, a polycrystalline battery piece, a single-side battery piece and a double-side power generation battery piece.

Further, photovoltaic module is dual glass assembly.

The battery pieces can be directly formed into usable battery strings without series welding of a series welding machine. After the front surface of each battery piece is connected with the first conductive medium, the back surface of each battery piece is welded with the second conductive medium, when the battery pieces are stacked, all the battery pieces are placed on the glass substrate with the spread packaging adhesive film, and the first conductive medium and the second conductive medium on the battery pieces are respectively abutted with the corresponding first conductive contact point and the second conductive contact point (namely, abutting contact is carried out to realize conduction). Through the laminating process, each convex strip is connected with the corresponding battery piece in a conduction mode to form a battery string, bus bars are led out of two ends of the battery string, and the battery strings are connected in series and parallel to form a complete assembly circuit. The utility model provides a structure through adding protruding strip portion and conductive contact point has replaced the solder strip among the prior art, has avoided using the solder strip to connect a series of problems such as latent splitting that the battery piece leads to, collapse limit and split even piece, has promoted the product yield, cost reduction and effective elimination photovoltaic module have power loss's hidden danger in the use.

Drawings

FIG. 1 is a schematic diagram of a photovoltaic module according to the prior art;

fig. 2 is a schematic view of a dispersing structure of a photovoltaic module according to an embodiment of the present invention;

fig. 3 is a schematic view of an internal structure of a photovoltaic module according to an embodiment of the present invention;

fig. 4 is a schematic structural view of a glass substrate and a raised strip of a photovoltaic module according to an embodiment of the present invention; and

fig. 5 is a schematic top view of a glass substrate of a photovoltaic module according to an embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the following drawings and specific examples, which should not be construed as limiting the invention.

Referring to fig. 2 to 5, according to an embodiment of the present invention, a photovoltaic module is provided, the photovoltaic module includes a battery string 10 and a glass substrate 30 for mounting the battery string 10, the battery string 10 includes a plurality of battery pieces 11 arranged at intervals, a gap 12 is provided between two adjacent battery pieces 11, a first conductive medium 21 is connected to a front surface of each battery piece 11, and a second conductive medium 22 is connected to a back surface of each battery piece 11. The plurality of battery pieces 11 are arranged on the glass substrate 30, a plurality of raised strip parts 40 are arranged on the glass substrate 30, and the raised strip parts 40 are correspondingly arranged in the gaps 12 one by one; the raised strip 40 has a first conductive contact 41 and a second conductive contact 42, the first conductive contact 41 and the second conductive contact 42 being conductive; the first conductive contact 41 abuts against the first conductive medium 21 of the corresponding one of the battery pieces 11, and the second conductive contact 42 abuts against the second conductive medium 22 of the corresponding other one of the battery pieces 11.

In the actual production process of the photovoltaic module, a part of the battery strings need to be repaired again manually. Because the battery piece that needs to be changed passes through with adjacent battery piece to be connected through the solder strip, the battery cluster is when changing the battery piece in rework, and the solder strip of connecting bad piece and adjacent battery piece needs all to separate with adjacent battery piece, takes new battery piece to place in original bad piece position after all demolishs, then reuse flatiron will weld the solder strip to adjacent battery piece in proper order. However, as the number of main grid lines of the battery is increased and the width of a single grid line is reduced in the prior art, the number of the interconnection welding strips at the assembly end is correspondingly increased, the welding area of the single grid line is reduced, and the amount of silver paste is reduced, the difficulty is increased when the battery string is repaired, the repairing efficiency is greatly reduced, and the productivity of the photovoltaic assembly is seriously affected.

The utility model provides a photovoltaic module not only can avoid using to weld a series of problems such as the hidden crack that leads to of taking to connect the battery piece, collapse limit and split even piece, can also solve foretell prior art in the problem of photovoltaic module battery cluster repair difficulty, the utility model discloses a battery piece does not weld into the battery cluster before subassembly lamination process, works as the utility model discloses when photovoltaic module needs repair the change battery piece at range upon range of in-process, take off required change battery piece and place at the relevant position newly trade the battery piece can, promoted repair efficiency like this greatly, promoted the subassembly productivity moreover.

Further, each raised strip 40 is provided with a plurality of sets of conductive glue, each set of conductive glue having a first conductive contact point 41 and a second conductive contact point 42 disposed therein. Preferably, the number of the groups of the conductive adhesive corresponds to the number of the main grid lines on the front surface of the battery piece 11, and each conductive adhesive is arranged in one-to-one correspondence with the main grid lines on the front surface of the battery piece 11.

Referring to fig. 3 and 4, in the present embodiment, the raised strip 40 has two sides corresponding to the adjacent battery pieces 11, and the first conductive contact point 41 and the second conductive contact point 42 are respectively located on two sides of the raised strip 40. The first conductive contact 41 and the second conductive contact 42 are displaced vertically in the raised strip 40 due to the conductive medium corresponding to the battery cell. The two contact points are in a vertically staggered relationship, namely, the side close to the glass substrate and the side far from the glass substrate.

With reference to fig. 2 and 3, an encapsulation adhesive film 50 is disposed between the battery piece 11 and the glass substrate 30, and a height of the stack of the first conductive medium 21, the battery piece 11, the second conductive medium 22 and the encapsulation adhesive film 50 is equal to a height of the protruding strip portion 40 protruding from the glass substrate 30. The height of the battery piece welded with the strip-shaped conductive medium after being laminated with the packaging adhesive film layer close to the glass substrate 30 is the same as the height of the protruding strip part 40 protruding from the glass substrate 30.

The battery piece 11 is in interference fit with the raised strip portion 40. That is, the two ridges 40 form a sandwiching relationship with the cell pieces. All the convex strip parts are in conductive connection with the battery sheets 11 to form the battery string 10.

Referring to fig. 4, a conductive member 43 is provided inside the raised strip 40, and the first conductive contact 41 and the second conductive contact 42 are electrically conducted through the conductive member 43. The battery sheet 11 is any one of the following: the battery comprises a single-crystal battery piece, a polycrystalline battery piece, a single-side battery piece and a double-side power generation battery piece.

The photovoltaic module of this embodiment is dual glass assembly, among the dual glass assembly, can be the front bezel glass of tempering/half tempering, also can be the backplate glass of tempering/half tempering.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise, and it should be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of features, steps, operations, devices, components, and/or combinations thereof.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.

Of course, the above is a preferred embodiment of the present invention. It should be noted that, for a person skilled in the art, several modifications and decorations can be made without departing from the basic principle of the present invention, and these modifications and decorations are also considered to be within the scope of the present invention.

Claims

1. A photovoltaic module, comprising:

the battery string (10) comprises a plurality of battery pieces (11) arranged at intervals, a gap (12) is formed between every two adjacent battery pieces (11), a first conductive medium (21) is connected to the front surface of each battery piece (11), and a second conductive medium (22) is connected to the back surface of each battery piece (11);

the battery cell structure comprises a glass substrate (30), wherein a plurality of battery cells (11) are mounted on the glass substrate (30), a plurality of raised strip portions (40) are arranged on the glass substrate (30), and the raised strip portions (40) are arranged in the gaps (12) in a one-to-one correspondence manner;

the raised strip (40) has a first conductive contact point (41) and a second conductive contact point (42), and the first conductive contact point (41) and the second conductive contact point (42) are conductive; the first conductive contact point (41) is abutted with the first conductive medium (21) of one corresponding battery piece (11), and the second conductive contact point (42) is abutted with the second conductive medium (22) of the other corresponding battery piece (11).

2. Photovoltaic module according to claim 1, characterized in that each raised strip (40) is provided with a plurality of sets of conductive glue, each set of conductive glue being provided with the first (41) and second (42) conductive contacts.

3. The photovoltaic module according to claim 2, wherein the number of the groups of the conductive adhesive corresponds to the number of the main grid lines on the front surface of the cell (11), and each conductive adhesive is arranged in one-to-one correspondence with the main grid lines on the front surface of the cell (11).

4. The photovoltaic module according to claim 1, wherein the raised strip (40) has two sides corresponding to the adjacent cells (11), and the first conductive contact point (41) and the second conductive contact point (42) are respectively located on two sides of the raised strip (40).

5. The photovoltaic module according to claim 1, wherein an encapsulation adhesive film (50) is disposed between the cell sheet (11) and the glass substrate (30), and a height of the first conductive medium (21), the cell sheet (11), the second conductive medium (22) and the encapsulation adhesive film (50) is equal to a height of the raised strip portion (40) protruding from the glass substrate (30).

6. The photovoltaic module according to claim 1, characterized in that the cell sheet (11) is in interference fit with the raised strip (40).

7. Photovoltaic module according to claim 1, characterized in that inside the raised strip (40) there is provided a conductive element (43), the first conductive contact point (41) and the second conductive contact point (42) being electrically conductive through the conductive element (43).

8. The photovoltaic module according to claim 1, wherein all the raised strips (40) are conductively connected to the cell sheet (11) to form the cell string (10).

9. Photovoltaic module according to claim 1, characterized in that the cell sheet (11) is any one of the following: the battery comprises a single-crystal battery piece, a polycrystalline battery piece, a single-side battery piece and a double-side power generation battery piece.

10. The photovoltaic assembly of claim 1, wherein the photovoltaic assembly is a dual glass assembly.