CN210403751U

CN210403751U - Photovoltaic module with bent head-tail welding strips

Info

Publication number: CN210403751U
Application number: CN201921619965.3U
Authority: CN
Inventors: 罗艳艳; 聂俊波; 曾仲; 徐晓平
Original assignee: Wuxi Suntech Power Co Ltd
Current assignee: Wuxi Suntech Power Co Ltd
Priority date: 2019-09-26
Filing date: 2019-09-26
Publication date: 2020-04-24
Anticipated expiration: 2029-09-26

Abstract

The utility model relates to a head and tail solder strip bending photovoltaic module, which comprises an upper layer of glass and a lower layer of photovoltaic cell panel, wherein the photovoltaic cell panel comprises a plurality of photovoltaic cell pieces which are fixed with each other through solder strips; the welding strips at the head and the tail of the photovoltaic module exceed the photovoltaic cell and are bent towards the back, and the tail ends of the welding strips at the head and the tail of the photovoltaic module are respectively connected with the bus bars; the bending parts of the welding strips at the head and the tail of the photovoltaic module are respectively provided with an insulating strip, and the insulating strips are positioned below the photovoltaic cell panel. The utility model discloses unit area subassembly conversion efficiency can be improved.

Description

Photovoltaic module with bent head-tail welding strips

Technical Field

The utility model relates to a photovoltaic module of bending is taken to end-to-end welding belongs to brilliant silicon solar module field.

Background

In the photovoltaic industry at present, in order to improve the power of components produced in unit time and reduce the manufacturing cost per watt and the BOS cost of a system, the size of a silicon wafer is gradually increased. Although the use of large silicon wafers can improve the photoelectric conversion efficiency of the module, the improvement is not great. And the increase of silicon chip will need to increase the overall dimension of the assembly to meet the certification standard and avoid power loss. In addition, the increase in the overall dimensions of the components also increases the line modification and certification costs.

Disclosure of Invention

The utility model aims to overcome the not enough of existence among the prior art, provide a photovoltaic module bends in head and the tail solder strip, the utility model discloses can improve unit area subassembly conversion efficiency.

According to the utility model provides a technical scheme: a head and tail welding strip bending photovoltaic assembly comprises glass arranged on an upper layer and a photovoltaic cell panel arranged on a lower layer, wherein the photovoltaic cell panel comprises a plurality of photovoltaic cell pieces which are fixed with each other through welding strips; the welding strips at the head and the tail of the photovoltaic module exceed the photovoltaic cell and are bent towards the back, and the tail ends of the welding strips at the head and the tail of the photovoltaic module are respectively connected with the bus bars; the bending parts of the welding strips at the head and the tail of the photovoltaic module are respectively provided with an insulating strip, and the insulating strips are positioned below the photovoltaic cell panel.

Further, the solder strip exceeds the photovoltaic cell by 5-6 mm.

Further, the glass and the photovoltaic cell panel are fixed to each other through an EVA material.

Further, the bus bars are arranged at intervals.

Compared with the prior art, the utility model, have following advantage:

1. high conversion efficiency of unit area module

Compare in the middle big battery pack that goes out the head on the market, the subassembly of this patent design uses big battery on satisfying the basis of authentication, and the subassembly overall dimension does not increase, has reduced the blank area, increases effective generating area proportion, improves subassembly conversion efficiency.

2. Saving cost

Compared with a large-format component of a large battery, the component designed by the patent can reduce material use, reduce production line modification cost and avoid increasing authentication.

Drawings

Fig. 1 is a front view of the present invention.

Fig. 2 is a rear view of the present invention.

Fig. 3 is a front view of the head of the present invention.

Fig. 4 is a partially enlarged view of the bending of the front welding strip of the head of the present invention.

Fig. 5 is a schematic view of the back of the head of the present invention.

Fig. 6 is a partially enlarged view of the bending of the welding strip on the back of the head of the present invention.

Description of reference numerals: 1-glass, 2-photovoltaic cell panel, 3-photovoltaic cell piece, 4-solder strip, 5-bus bar and 6-insulating strip.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

As shown in fig. 1 to 6, the photovoltaic module with a bent head and tail solder strip according to the present invention comprises a glass 1 disposed on an upper layer and a photovoltaic cell panel 2 disposed on a lower layer, wherein the photovoltaic cell panel 2 comprises a plurality of photovoltaic cells 3, and the photovoltaic cells 3 are fixed to each other by solder strips 4; the welding strips 4 at the head and the tail of the photovoltaic module exceed the photovoltaic cell 3 and are bent towards the back, and the tail ends of the welding strips 4 at the head and the tail of the photovoltaic module are respectively connected with a bus bar 5; the bending parts of the welding strips 4 at the head and the tail of the photovoltaic module are respectively provided with an insulating strip 6, and the insulating strips 6 are positioned below the photovoltaic cell panel 2.

As shown in FIG. 4, the solder strip 4 extends 5-6 mm beyond the photovoltaic cell 3.

The glass 1 and the photovoltaic cell panel 2 are fixed with each other through an EVA material.

As shown in fig. 5, the bus bars 5 are arranged at intervals.

In the prior art module design, the tail ends of the welding strips 4 at the head part and the tail part need to be connected with bus bars 5, and the bus bars 5 are arranged above and below the cell panel, so that if the size of the photovoltaic cell 3 is increased, the overall size of the module is also increased; in this patent, bend 4 with the solder strip of head and afterbody, make busbar 5 set up at the back of panel 2, just so saved the space of leaving for busbar 5 in the subassembly version type, photovoltaic cell 3 size increases, and the subassembly overall dimension does not increase, reduces the blank area, increases effective power generation area proportion, improves subassembly conversion efficiency.

It is to be understood that the above embodiments are merely exemplary embodiments that have been employed to illustrate the principles of the present invention, and that the present invention is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.

Claims

1. A head and tail welding strip bending photovoltaic assembly comprises glass (1) arranged on an upper layer and a photovoltaic cell panel (2) arranged on a lower layer, wherein the photovoltaic cell panel (2) comprises a plurality of photovoltaic cell pieces (3), and the photovoltaic cell pieces (3) are mutually fixed through welding strips (4); the photovoltaic module is characterized in that the welding strips (4) at the head and the tail of the photovoltaic module exceed the photovoltaic cell (3) and are bent towards the back, and the tail ends of the welding strips (4) at the head and the tail of the photovoltaic module are respectively connected with the bus bars (5); the bending parts of the welding strips (4) at the head and the tail of the photovoltaic module are respectively provided with an insulating strip (6), and the insulating strips (6) are positioned below the photovoltaic cell panel (2).

2. The head-tail solder strip bending photovoltaic module according to claim 1, wherein the solder strip (4) extends 5-6 mm beyond the photovoltaic cell piece (3).

3. The assembly according to claim 1, characterized in that the glass (1) and the photovoltaic panel (2) are fixed to each other by EVA material.

4. The ribbon-head photovoltaic module according to claim 1, characterized in that the busbars (5) are arranged at intervals.