CN212063939U - High-power solar cell module - Google Patents

Abstract

This utility model discloses a high-power solar cell module, relating to the field of solar cell technology. The utility model includes several groups of solar panels and several junction boxes. The solar panels are arranged side-by-side and fixedly connected. Each solar panel includes a frame, tempered glass, solar cells, and a backplate. Each solar cell is composed of two halves of a cell. The input terminals of the two halves are connected to a first connection terminal, and the output terminals are connected to a second connection terminal. Both the first and second connection terminals are fixed to the rear side of the backplate. This utility model reduces the overall series resistance of the solar cell module by using multiple junction boxes instead of the current integrated junction boxes, thereby reducing encapsulation losses. Simultaneously, using half-cells instead of whole cells reduces the series resistance of the module, solving the problem of insufficient power caused by significant losses in existing solar cell modules.

Description

A high-power solar cell module

technical field

The utility model belongs to the technical field of solar cells, in particular to a high-power solar cell assembly.

Background technique

Half-slice battery module refers to the technology of connecting ordinary batteries in half and connecting them in series. Due to the decrease in resistance between batteries, the output power of general half-slice battery modules will be about 5-10W higher than that of traditional modules. The increased cost is not much, so it is favored by manufacturers and end customers.

Today's solar battery packs are mostly installed with an integral junction box. The electrical energy passes through the monocrystalline silicon wafer on the solar panel and then is transferred to another solar panel through wires. After the electrical energy passes through multiple solar panels, the series line is relatively long. The series resistance is large, which causes the problem of large power loss, thus affecting the power of the battery pack.

Utility model content

The purpose of the present utility model is to provide a high-power solar cell assembly. By setting a plurality of junction boxes to replace the current integrated junction box, the series resistance of the whole solar cell group is reduced, thereby reducing the packaging loss. The battery replaces the current whole battery, which can reduce the series resistance of the module and solve the problem of insufficient power caused by the large loss of the existing solar battery pack.

In order to solve the above-mentioned technical problems, the utility model is realized through the following technical solutions:

The utility model relates to a high-power solar cell assembly, comprising several groups of battery plates and several junction boxes, several groups of the battery plates are fixed and connected side by side in sequence, and the battery plates comprise a frame, tempered glass, battery slices and a back plate;

The battery sheet is composed of two half-cut batteries, the input ends of the two half-cut batteries are connected to a first connection end, the output ends of the two half-cut batteries are connected to a second connection end, and the first connection end and the second connection end are connected. The two connection ends are fixed on the rear side of the backplane;

Several of the junction boxes are respectively fixed on one side of several groups of battery boards through brackets, the first connection ends of a group of the battery boards are electrically connected to the junction boxes through first wires, and the first connection ends of a group of the battery boards are electrically connected to the junction boxes. The two connection ends are connected to each other through a second wire.

Further, the tempered glass and the back plate are respectively laminated on the upper surface and the lower surface of the battery sheet, EVA is provided between the tempered glass, the back plate and the battery sheet, and the frame is wrapped and fixed on the tempered glass and the back plate. and the outer surface of the panel.

Further, the bracket includes a flange plate, the flange plate is fixed between a group of battery plates by screws, a group of horizontal plates is fixed at the bottom of one surface of the flange plate, and the junction box is fixed on the horizontal plate by screws. board.

Further, the half-cut cell is cut from a five-grid cell by a laser cutting machine, and a plurality of monocrystalline silicon wafers on the half-cut cell are connected in series in a serpentine shape.

Further, several of the junction boxes are connected in series through external wiring.

The utility model has the following beneficial effects:

1. The utility model can reduce the length of bus bars and cables by setting a plurality of junction boxes to replace the current integrated junction boxes, and reduce the overall series resistance of the solar cell group, thereby reducing the packaging loss, thereby indirectly. of increasing the power of the solar battery pack.

2. The utility model uses laser scribing to make half-cell cells instead of whole cells, which can reduce the series resistance of the components, reduce the packaging loss, improve the output power, reduce the current mismatch loss of the cells, and the current in the module itself. Loss is reduced.

Of course, any product implementing the present invention does not necessarily need to simultaneously achieve all of the above-mentioned advantages.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the accompanying drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative effort.

1 is a schematic structural diagram of a high-power solar battery pack of the present invention;

Figure 2 is a schematic structural diagram of a battery board, a bracket and a junction box;

Figure 3 is a structural cross-sectional view of a battery plate;

In the accompanying drawings, the list of components represented by each number is as follows:

1-battery board, 2-junction box, 3-bracket, 101-frame, 102-tempered glass, 103-battery sheet, 104-backplane, 105-first connection end, 106-second connection end, 107-first connection A lead, 108-second lead, 109-EVA, 110-half-cut battery, 301-flange plate, 302-cross plate.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

Please refer to FIGS. 1-3 , the present invention is a high-power solar cell assembly, comprising several groups of solar panels 1 and several junction boxes 2 , and several groups of solar panels 1 are fixedly connected side by side in sequence, and the solar panel 1 includes a frame 101 , Tempered glass 102, battery sheet 103 and back plate 104;

The battery sheet 103 is composed of two half-cut batteries 110 , the input ends of the two half-cut batteries 110 are connected to the first connection end 105 , the output ends of the two half-cut batteries 110 are connected to the second connection end 106 , the first connection end 105 and the second connection end 106 . The connection ends 106 are all fixed on the rear side of the backplane 104;

Several junction boxes 2 are respectively fixed on one side of several groups of battery boards 1 through brackets 3 . The second connection ends 106 of the two are connected to each other through a second wire 108 .

As shown in FIG. 3 , the tempered glass 102 and the back plate 104 are respectively laminated on the upper surface and the lower surface of the battery sheet 103 , EVA 109 is provided between the tempered glass 102 , the back plate 104 and the battery sheet 103 , and the frame 101 is wrapped and fixed On the outer surfaces of the tempered glass 102 , the back plate 104 and the battery plate 1 .

As shown in FIG. 2, the bracket 3 includes a flange plate 301, the flange plate 301 is fixed between a group of battery plates 1 by screws, a group of horizontal plates 302 are fixed at the bottom of one surface of the flange plate 301, and the junction box 2 is fixed by screws. It is fixed on the horizontal plate 302 .

The half-cut cell 110 is cut from the five-grid cell 103 by a laser cutting machine, and a plurality of monocrystalline silicon wafers on the half-cut cell 110 are connected in series in a serpentine shape.

Among them, several junction boxes 2 are connected in series through external wiring.

In the description of this specification, description with reference to the terms "one embodiment", "example", "specific example", etc. means that a specific feature, structure, material or characteristic described in connection with the embodiment or example is included in the present invention. in at least one embodiment or example. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details, nor do they limit the invention to only the described embodiments. Obviously, many modifications and variations are possible in light of the contents of this specification. This specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the present invention, so that those skilled in the art can well understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims (5)

1. A high-power solar cell assembly, comprising several groups of solar panels (1), the several groups of the solar panels (1) being fixedly connected side by side in sequence, the solar panels (1) comprising a frame (101), a tempered glass (102) ), a battery sheet (103) and a backplane (104), characterized in that it further comprises a plurality of junction boxes (2); The battery sheet (103) is composed of two half-cut batteries (110), the input ends of the two half-cut batteries (110) are connected with a first connection end (105), and the output ends of the two half-cut batteries (110) A second connection end (106) is connected, and the first connection end (105) and the second connection end (106) are both fixed on the rear side of the backplane (104); A plurality of the junction boxes (2) are respectively fixed on one side of the plurality of battery plates (1) through the brackets (3), and the first connection ends (105) on the battery plates (1) of a group of the battery plates (1) pass through the first wires ( 107) is electrically connected to the junction box (2), and the second connection ends (106) on a group of the battery boards (1) are connected to each other through second wires (108). 2. A high-power solar cell assembly according to claim 1, characterized in that, the tempered glass (102) and the back plate (104) are laminated on the upper surface and the lower surface of the cell (103), respectively, so that the EVA (109) is provided between the tempered glass (102) and the back plate (104) and the battery sheet (103), and the frame (101) is wrapped and fixed on the tempered glass (102), the back plate (104) and the The outer surface of the battery plate (1). 3 . The high-power solar cell assembly according to claim 1 , wherein the bracket ( 3 ) comprises a flange plate ( 301 ), and the flange plate ( 301 ) is fixed to a set of batteries by screws. 4 . Between the plates (1), a set of transverse plates (302) are fixed at the bottom of one surface of the flange plate (301), and the junction box (2) is fixed on the transverse plates (302) by screws. 4. A high-power solar cell assembly according to claim 1, wherein the half-cut cell (110) is cut from a five-grid cell sheet (103) by a laser cutting machine, and the half-cut cell (110) is cut by a laser cutting machine. ) are connected in series in a serpentine shape. 5 . The high-power solar cell assembly according to claim 1 , wherein a plurality of the junction boxes ( 2 ) are connected in series through external wires. 6 .

Images