CN216902971U

CN216902971U - Overlap busbar and overlap subassembly of tiling

Info

Publication number: CN216902971U
Application number: CN202123110233.1U
Authority: CN
Inventors: 姚川朋; 刘勇; 王建明; 介雷; 刘培培; 周静; 孔国寿
Original assignee: Das Solar Co Ltd
Current assignee: Yidao New Energy Technology Co ltd
Priority date: 2021-12-10
Filing date: 2021-12-10
Publication date: 2022-07-05
Anticipated expiration: 2031-12-10

Abstract

The utility model discloses a bus bar of a tile-stacked assembly and the tile-stacked assembly, and relates to the technical field of photovoltaics. The bus bars comprise a first current bar, a second current bar and a plurality of third current bars, and the first current bar and the second current bar are arranged in parallel; the plurality of third current bars are positioned between the first current bars and the second current bars and are vertically connected, and the plurality of third current bars are arranged in parallel. The third current bar is electrically connected with the first current bar and the second current bar respectively. The bus bar is in a hollow structure, the mechanical strength of the bus bar is reduced due to the hollow structure, and warping of the bus bar in the bending process is effectively avoided.

Description

Overlap busbar and overlap subassembly of tiling

Technical Field

The utility model relates to the technical field of photovoltaics, in particular to a bus bar of a laminated assembly and the laminated assembly.

Background

With the rapid development of global photovoltaic technology, the shingled module receives more and more attention in the industry due to its higher output power and higher module conversion efficiency, and gradually becomes the mainstream direction of the photovoltaic module high-efficiency technology.

In the development of the welding technology of the laminated assembly, the laminated battery plates collect current through series connection and the bus bars, the mechanical strength of the conventional bus bars in the laminating process is high, and the bus bars are warped in the bending process, so that the attractiveness of the assembly is influenced, and the application effect of the assembly is also influenced.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention has been made to provide a bus bar of a laminated assembly and a laminated assembly that overcome or at least partially solve the above problems.

The utility model provides a bus bar of a laminated assembly, which comprises a first current bar, a second current bar and a plurality of third current bars, wherein the first current bar and the second current bar are arranged in parallel; the plurality of third current bars are positioned between the first current bar and the second current bar, the third current bars are respectively and vertically connected with the first current bar and the second current bar, and the plurality of third current bars are arranged in parallel; the first current bar and the second current bar are both used for being electrically connected with the battery strings of the laminated assembly, and the third current bar is electrically connected with the first current bar and the second current bar respectively so as to realize current convergence among the battery strings.

Preferably, both end portions of the first current bar are aligned with both end portions of the second current bar, respectively.

Preferably, the interval between two adjacent third current bars is equal.

Preferably, a distance between a head end of the bus bar and the third current bar at the head part is a first distance; the distance between the tail end of the bus bar and the third current bar at the tail part is a second distance;

the length of the first distance is equal to the length of the second distance.

Preferably, the width of each of the first current bar and the second current bar is smaller than the width of the third current bar.

Preferably, the first current bar and the second current bar have equal widths.

Preferably, the width of the first current bar and the width of the second current bar are both 0.8mm-1.8 mm.

Preferably, the width of the third current bar is 1.2mm-4 mm.

Preferably, the distance between two adjacent third current bars is 10mm-20 mm.

The utility model provides a stack assembly comprising a plurality of bus bars as described in any one of the above and a plurality of battery strings, a first current bar of the bus bars being electrically connected to one of the battery strings and a second current bar being electrically connected to another of the battery strings.

Compared with the prior art, the bus bar of the laminated assembly provided by the utility model comprises the first current bar, the second current bar and a plurality of third current bars. The first current bar and the second current bar are arranged in parallel, and the plurality of third current bars are arranged in parallel. One end of a third current bar is vertically connected with the first current bar, and the other end of the third current bar is vertically connected with the second current bar. The first current bar is electrically connected with one battery string in the laminated assembly, the second current bar is electrically connected with the other battery string in the laminated assembly, and the battery strings in the laminated assembly are connected in series and/or in parallel through the bus bar, so that the current of the battery strings is converged. The bus bar of the laminated tile assembly is in a hollow structure through the structure in the embodiment of the utility model, the mechanical strength of the bus bar is reduced through the hollow structure, and the bus bar is effectively prevented from warping in the bending process.

The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the utility model. Also, like reference numerals are used to refer to like parts throughout the drawings.

In the drawings:

fig. 1 is a schematic structural diagram of a bus bar according to an embodiment of the present invention;

fig. 2 is a schematic partial structural view of a laminated assembly according to an embodiment of the present invention.

Reference numerals: 1. a first current bar; 2. a second current bar; 3. a third current bar; 4. a first distance; 5. a second distance; 6. a middle region bus bar; 7. the head and tail regions may flow stripes.

Detailed Description

Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the utility model are shown in the drawings, it should be understood that the utility model can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the utility model to those skilled in the art.

Referring to fig. 1, a bus bar of a shingle assembly is provided according to an embodiment of the present invention, where the bus bar includes a first current bar 1, a second current bar 2, and a plurality of third current bars 3, and the first current bar 1 is arranged in parallel with the second current bar 2; the plurality of third current bars 3 are located between the first current bar 1 and the second current bar 2, the third current bars 3 are respectively and vertically connected with the first current bar 1 and the second current bar 2, and the plurality of third current bars 3 are arranged in parallel. The first current bar 1 and the second current bar 2 are both used for electrically connecting the battery strings of the laminated assembly, and the third current bar 3 is respectively electrically connected with the first current bar 1 and the second current bar 2 so as to realize the current convergence between the battery strings.

In one embodiment, the bus bar comprises a first current bar 1, a second current bar 2 and a plurality of third current bars 3. The first current bar 1 and the second current bar 2 are arranged in parallel, and the plurality of third current bars 3 are arranged in parallel. One end of a third current bar 3 is vertically connected with the first current bar 1, and the other end of the third current bar 3 is vertically connected with the second current bar 2. The first current bar 1 is electrically connected with one battery string in the laminated assembly, the second current bar 2 is electrically connected with the other battery string in the laminated assembly, and the battery strings in the laminated assembly are connected in series and/or in parallel through the bus bars, so that the currents of the battery strings are converged. The bus bar of the laminated tile assembly is in a hollow structure through the structure in the embodiment of the utility model, the mechanical strength of the bus bar is reduced through the hollow structure, and the bus bar is effectively prevented from warping in the bending process. The first current bar 1, the second current bar 2 and the third current bar 3 are all made of tin-coated metal bars. The material of the first current bar 1, the second current bar 2, and the third current bar 3 is an example of the embodiment of the present invention, and should not be construed as a limitation to the material of the first current bar 1, the second current bar 2, and the third current bar 3.

Optionally, two end portions of the first current bar 1 and two end portions of the second current bar 2 are respectively aligned.

In an alternative embodiment of the present invention, referring to fig. 1, it is shown that the first current bar 1 and the second current bar 2 have the same length, and both ends of the first current bar 1 and the second current bar 2 are aligned respectively. In the process that the first current bar 1 and the second current bar 2 are respectively connected with the battery strings of the laminated assembly, the connection among the battery strings is more orderly.

Optionally, the distance between the head end of the bus bar and the third current bar 3 at the head part is a first distance 4; the distance between the tail end of the bus bar and the third current bar 3 at the tail part is a second distance 5; the length of the first distance 4 is equal to the length of the second distance 5. And the intervals between two adjacent third current bars 3 in the plurality of third current bars 3 are equal.

In an alternative embodiment of the present invention, referring to fig. 1, the distance between the head end of the bus bar and the third current bar 3 of the head is shown as a first distance 4. The distance between the tail end of the bus bar and the third current bar 3 at the tail part is a second distance 5. The length of the first distance 4 is equal to that of the second distance 5, a plurality of third current bars 3 are sequentially arranged along the axial direction of the first current bar 1 and the second current bar 2, and the intervals between every two adjacent third current bars 3 are equal. When the bus bar is electrically connected with the battery string in the laminated assembly, the current collected by each third current bar 3 is equal, so that the phenomenon that the local collected current is too large and the working efficiency of the laminated assembly is influenced is avoided.

Optionally, the width of the first current bar 1 and the width of the second current bar 2 are both smaller than the width of the third current bar 3.

In an alternative embodiment of the present invention, referring to fig. 1, it is shown that the width of the first current bar 1 and the width of the second current bar 2 are both smaller than the width of the third current bar 3. The width of the first current bar 1, the width of the second current bar 2 and the width of the third current bar 3 can be set according to actual requirements. The width of the first current bar 1, the width of the second current bar 2, and the width of the third current bar 3 in the embodiment of the present invention are merely examples, and should not be construed as limiting the width of the first current bar 1, the width of the second current bar 2, and the width of the third current bar 3.

Optionally, the first current bar 1 and the second current bar 2 have equal widths.

In an alternative embodiment, referring to fig. 1, it is shown that the width of the first current bar 1 is equal to the width of the second current bar 2, and such a structure does not require the bus bar to distinguish the first current bar 1 from the second current bar 2 during the electrical connection with each battery string, thereby avoiding the connection error between the first current bar 1 and the second current bar 2 of the bus bar and the battery string.

Optionally, the width of the first current bar 1 and the width of the second current bar 2 are both 0.8mm to 1.8 mm.

In an alternative embodiment of the present invention, the width of the first current bar 1 and the width of the second current bar 2 range from 0.8mm to 1.8 mm. For example, the width of the first current bar 1 and the width of the second current bar 2 may be set to 0.8mm, 1.2mm, 1.4mm, or the like. The setting of the width of the first current bar 1 and the width of the second current bar 2 is only an example in the embodiment of the present invention, and should not be understood as a limitation to the width of the first current bar 1 and the width of the second current bar 2.

Optionally, the width of the third current bar 3 is 1.2mm-4 mm.

In an alternative embodiment of the present invention, the width of the third current bar 3 is in the range of 1.2mm to 4 mm. For example, the width of the third current bar 3 may be set to 1.2mm, 1.5mm, 3mm, or the like. The setting of the width of the third current bar 3 is only an example in the embodiment of the present invention, and should not be understood as a limitation to the width of the third current bar 3.

Optionally, the distance between two adjacent third current bars 3 is 10mm-20 mm.

In an alternative embodiment of the present invention, a plurality of third current bars 3 are sequentially arranged along the first current bar 1 and the second current bar 2. Wherein, the interval range between two adjacent third current bars 3 in a plurality of third current bars 3 is 10mm-20 mm. For example, the pitch between two adjacent third current bars 3 may be set to 10mm, 15mm, 18mm, or the like. The setting of the distance between two adjacent third current bars 3 is only an example in the embodiment of the present invention, and should not be understood as a limitation on the distance between two adjacent third current bars 3.

The utility model provides a laminated tile assembly, which comprises a plurality of bus bars and a plurality of battery strings, wherein a first current bar 1 of each bus bar is electrically connected with one battery string, and a second current bar 2 of each bus bar is electrically connected with the other battery string.

Referring to fig. 2, there is shown a laminated assembly provided by the present invention, comprising a plurality of bus bars of any one of the above, a plurality of cell strings, a frame and a glass plate. Each battery string is electrically connected with the bus bar to collect current, the combined battery strings and the bus bar form a photovoltaic module through the covering glass plate, and the photovoltaic module is sleeved with the frame to form a shingle assembly. The bus bars 6 in the middle area and the bus bars 7 in the head and tail areas in the laminated tile assembly adopt the bus bars with the same specification and size, and the process of automatically welding the bus bars in an integrated mode is convenient to realize.

The working principle is as follows: the bus bars comprise a first current bar 1, a second current bar 2 and a number of third current bars 3. The first current bar 1 and the second current bar 2 are arranged in parallel, and the plurality of third current bars 3 are arranged in parallel. One end of a third current bar 3 is vertically connected with the first current bar 1, and the other end of the third current bar 3 is vertically connected with the second current bar 2. The first current bar 1 is electrically connected with one battery string in the laminated assembly, the second current bar 2 is electrically connected with the other battery string in the laminated assembly, and the battery strings in the laminated assembly are connected in series and/or in parallel through the bus bars, so that the currents of the battery strings are converged. According to the structure in the embodiment of the utility model, the bus bar of the laminated tile assembly is in a hollow structure, the mechanical strength of the bus bar is reduced due to the hollow structure, and the bus bar is effectively prevented from being warped in the bending process.

The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

As is readily imaginable to the person skilled in the art: any combination of the above embodiments is possible, and thus any combination between the above embodiments is an embodiment of the present invention, but this specification is not necessarily detailed herein for reasons of space limitation.

In the description provided herein, numerous specific details are set forth. However, it is understood that embodiments of the utility model may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.

Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the utility model, various features of the utility model are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the utility model and aiding in the understanding of one or more of the various inventive aspects.

Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the utility model and form different embodiments. For example, in the claims, any of the claimed embodiments may be used in any combination.

Claims

1. A busbar of a laminated assembly, characterized in that it comprises a first current bar (1), a second current bar (2) and a number of third current bars (3), the first current bar (1) being arranged in parallel with the second current bar (2); the plurality of third current bars (3) are positioned between the first current bar (1) and the second current bar (2), the third current bars (3) are respectively and vertically connected with the first current bar (1) and the second current bar (2), and the plurality of third current bars (3) are arranged in parallel;

the first current bar (1) and the second current bar (2) are used for being electrically connected with the battery strings of the laminated assembly, and the third current bar (3) is electrically connected with the first current bar (1) and the second current bar (2) respectively so as to realize the current convergence among the battery strings.

2. Bus bar according to claim 1, characterized in that both ends of the first current bar (1) are arranged in alignment with both ends of the second current bar (2), respectively.

3. A bus bar according to claim 1, wherein the intervals between adjacent two of the third current bars (3) are equal.

4. Bus bar according to claim 1, characterized in that the distance between the head end of the bus bar and the third current bar (3) of the head part is a first distance (4); the distance between the tail end of the bus bar and the third current bar (3) at the tail part is a second distance (5);

the length of the first distance (4) is equal to the length of the second distance (5).

5. Bus bar according to claim 1, characterized in that the width of the first (1) and second (2) current bars is smaller than the width of the third current bar (3).

6. Bus bar according to claim 1, characterized in that the first (1) and the second (2) current bar have equal width.

7. Bus bar according to claim 1, characterized in that the width of the first current bar (1) and the width of the second current bar (2) are both 0.8-1.8 mm.

8. A bus bar according to claim 1, characterized in that the width of the third current bar (3) is 1.2-4 mm.

9. Bus bar according to claim 1, characterized in that the distance between two adjacent third current bars (3) is 10-20 mm.

10. A stack assembly comprising a plurality of busbars according to any one of claims 1 to 9, a first current bar (1) of which is electrically connected to one of said battery strings and a plurality of battery strings, and a second current bar (2) of which is electrically connected to another of said battery strings.