CN212085018U

CN212085018U - Shingled photovoltaic module

Info

Publication number: CN212085018U
Application number: CN202021186399.4U
Authority: CN
Inventors: 何金鑫; 李小霞
Original assignee: Hengdian Group DMEGC Magnetics Co Ltd
Current assignee: Hengdian Group DMEGC Magnetics Co Ltd
Priority date: 2020-06-23
Filing date: 2020-06-23
Publication date: 2020-12-04
Anticipated expiration: 2030-06-23

Abstract

The utility model discloses a shingled photovoltaic module belongs to the photovoltaic technology field, including battery pack, battery pack includes a plurality of battery cluster groups that set up along the first direction interval, battery cluster group includes a plurality of battery clusters that the butt set up in proper order along the second direction, first direction perpendicular to second direction, and the second direction is the array orientation of a plurality of battery pieces of battery cluster, battery pack still includes a plurality of first insulation that are black and extend along the second direction and hides the strip, first insulation hides the strip and hides the clearance between two adjacent battery cluster groups, and in the first direction, every first insulation hides the positive at least part that the strip covers every battery cluster group that is located its both sides. The battery pack shields the gap between two adjacent battery string groups through the black first insulation shielding strip, the bus bar is prevented from leaking to affect the appearance of the battery pack, the first insulation shielding strip can insulate the two corresponding battery string groups, and short circuit is avoided.

Description

Shingled photovoltaic module

Technical Field

The utility model relates to a photovoltaic technology field especially relates to a photovoltaic module tiles.

Background

The laminated photovoltaic module is a popular high-efficiency module in a solar power generation system, and is different from the traditional packaging process, the laminated photovoltaic module slices a cell, the cell is connected into a cell string through special conductive adhesive, then a main grid line or a back electrode at the edges of two ends of the solar cell string is welded by a small number of first welding strips, and then a bus bar is welded with a first welding strip led out, the solar cell is tightly arranged in a series-parallel connection structure by the laminated photovoltaic module, no gap is formed between the front cell and the back cell, the internal loss caused by the connection of the interconnection bars with the cell is reduced, more than 13% of cells of a conventional module can be placed in the same module area, and the photoelectric conversion efficiency of the module is greatly improved.

At present, the shingled photovoltaic is more and more popular for civil use, and therefore, the safety is particularly important. The shingled photovoltaic module is easy to generate a 'hot spot effect', namely, the shielded cell module in the serial branch is used as a load to consume energy generated by other illuminated cell modules, and the shielded cell module can generate heat, so that the power attenuation and performance reduction of the module are displayed, and the power generation capacity and the total output power of the whole solar cell are influenced.

In order to solve the above problems, the cell assembly is generally divided into N cells by the bus bars, each cell is correspondingly connected with one diode, each diode covers less cells, and more effective cells can be reserved when the "hot spot effect" is generated.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a fold photovoltaic module tiles to solve the fold photovoltaic module tiles that exists among the prior art to adopting the black battery piece, the busbar spills by the clearance between the battery cluster easily, influences fold photovoltaic module tiles's outward appearance.

As the conception, the utility model adopts the technical proposal that:

the utility model provides a shingled photovoltaic module, includes battery pack, battery pack includes a plurality of battery cluster groups that set up along the first direction interval, battery cluster group includes a plurality of battery strings that set up along the second direction butt in proper order, first direction perpendicular to the second direction, just the second direction does the array orientation of a plurality of battery pieces of battery string, battery pack still includes a plurality of black and follows the first insulation that the second direction extends hides the strip, the first insulation hides the strip and covers in adjacent two clearance between the battery cluster group, and in the first direction, every first insulation hides the strip and covers every that is located its both sides the positive at least part of battery cluster group.

Furthermore, in the first direction, the front surface of the battery piece is provided with a plurality of first main grid lines, the distance between one first main grid line located at the outermost side and the corresponding edge line of the battery piece is L1, the distance between two adjacent battery string groups is L2, and in the first direction, the width of the first insulating shielding strip is (L2+2L 1).

Further, the battery assembly further includes a plurality of first bus bars and two second bus bars respectively located at two ends of the battery assembly in the second direction, the first bus bars and the second bus bars both extend in the first direction, the first bus bars are located at the back of the battery string group, and two ends of each battery string are respectively connected to one of the first bus bars and one of the second bus bars.

Furthermore, the battery assembly further comprises two first welding strips and two black second insulating shielding strips, each first welding strip is connected to one second bus bar, each first welding strip and the corresponding second bus bar are located on the same plane, and each second shielding strip covers one first welding strip and the second bus bar corresponding to the first welding strip.

Further, along the second direction, a plurality of battery string groups are divided to form a plurality of battery units, each battery unit comprises a plurality of battery strings, the first bus bar is arranged at the position where two adjacent battery units are in contact, and two ends of each battery string of each battery unit are connected in parallel with the same diode through one first bus bar and one second bus bar respectively.

Further, the battery pack further comprises a junction box and a plurality of outgoing lines, each outgoing line is connected to the junction box, each outgoing line is connected to the first bus bar or the second bus bar, the outgoing lines are located in gaps between adjacent battery string groups, and one of the first insulating cover bars covers the outgoing lines.

Further, the battery assembly further comprises a plurality of first bus bars and two second welding strips, the first bus bars and the second welding strips extend along the first direction, the first bus bars and the two second welding strips are located on the back face of the battery string group, and two ends of each battery string are connected to one first bus bar and one second welding strip respectively.

Further, the shingled photovoltaic module further comprises a glass substrate and a black back plate, the battery module is arranged between the back plate and the glass substrate, and the front face of the battery string group faces the glass substrate.

Further, the shingled photovoltaic module further comprises a transparent packaging film, and the packaging film is arranged between the back plate and the cell module and between the glass substrate and the cell module.

Further, the shingled photovoltaic module further comprises a mounting frame, and the back plate, the glass substrate and the battery module are all mounted in the mounting frame.

The utility model has the advantages that:

the utility model provides a fold tile photovoltaic module, fold tile photovoltaic module's battery pack shelter from the clearance between two adjacent battery string groups through being black first insulation shading strip, avoid the busbar to spill the outward appearance that influences battery pack, and first insulation shading strip can insulate two battery string groups that correspond, avoids appearing the short circuit.

Drawings

Fig. 1 is a front view of a battery assembly provided by the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

fig. 3 is a partial view of a battery assembly provided by the present invention;

fig. 4 is a schematic structural diagram of a laminated photovoltaic module provided by the present invention.

In the figure:

10. a battery assembly; 1. a battery string group; 11. a battery string; 111. a battery piece; 1111. a first main gate line; 2. a first bus bar; 3. a second bus bar; 4. a first solder strip; 5. a first insulating masking strip; 6. a second insulating masking strip; 7. a back plate; 8. a glass substrate; 9. and (5) packaging the film.

Detailed Description

In order to make the technical problem solved by the present invention, the technical solution adopted by the present invention and the technical effect achieved by the present invention clearer, the technical solution of the present invention will be further explained by combining the drawings and by means of the specific implementation manner. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the elements related to the present invention are shown in the drawings.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

As shown in fig. 1 to 4, the present embodiment provides a laminated photovoltaic module, which includes a battery assembly 10, the battery assembly 10 includes a plurality of battery string sets 1 disposed at intervals along a first direction, the battery string sets 1 include a plurality of battery strings 11 disposed in an abutting manner along a second direction, the first direction is perpendicular to the second direction, and the second direction is an arrangement direction of a plurality of battery sheets 111 of the battery strings 11. The battery assembly 10 further includes a plurality of black first insulating masking strips 5 extending along the second direction, the first insulating masking strips 5 mask gaps between two adjacent battery string sets 1, that is, gaps between any two adjacent battery string sets 1 are masked by one first insulating masking strip 5, and the first insulating masking strips 5 are located on the front surfaces of the battery string sets 1. In the first direction, each first insulating masking strip 5 covers at least a portion of the front surface of each battery string group 1 located at both sides thereof. Wherein, the first direction is ab direction in fig. 1, and the second direction is cd direction in fig. 2.

The color of the cell sheet 111 constituting the cell string 11 is black. In the first direction, the battery string sets 1 are arranged at intervals, so that a gap is formed between two adjacent battery string sets 1, and at the moment, the bus bar arranged on the back surface of the battery string set 1 leaks out through the gap to influence the appearance of the laminated photovoltaic module, so that the laminated photovoltaic module is covered by the first insulating shielding bar 5. Specifically, the number of the first insulating masking stripes 5 is equal to the number of the battery string groups 1 minus one. It is understood that the back side of the cell string 1 refers to a side of the cell string 1 facing away from the sun, and a side of the cell string 1 facing the sun is a front side of the cell string 1.

As shown in fig. 2 and 3, in the present embodiment, in the first direction, a plurality of first main grid lines 1111 are disposed on the front surface of each cell piece 111, and a plurality of second main grid lines (not shown) are disposed on the back surface of each cell piece 111, wherein the first main grid line 1111 of one cell piece 111 is adhered to the second main grid line of another cell piece 111 by a conductive adhesive, so as to connect the two cell pieces 111. In the first direction, the distance between one first main grid line 1111 located at the outermost side and the edge line of the corresponding battery piece 111 is L1, and the distance between two adjacent battery string groups 1 is L2. In the first direction, the width of the first insulating masking strip 5 is (L2+2L1), so that the first insulating masking strip 5 can completely cover the gap between the two battery string sets 1, and simultaneously plays an insulating role between the two battery string sets 1, thereby avoiding the short circuit of the two adjacent battery string sets 1.

Referring to fig. 1, in the present embodiment, the battery assembly 10 includes six battery string sets 1, each battery string set 1 includes four battery strings 11, and correspondingly, five first insulating masking strips 5 are provided, and of course, in other embodiments, the number of the battery string sets 1 included in the battery assembly 10 and the number of the battery strings 11 included in each battery string set 1 may be set according to actual needs.

In the present embodiment, the battery assembly 10 further includes a plurality of first bus bars 2 and two second bus bars 3 respectively located at both ends of the battery assembly 10 in the second direction, the first bus bars 2 and the second bus bars 3 each extending in the first direction, the first bus bars 2 being located at the back of the battery string group 1, and both ends of each battery string 11 being respectively connected to one first bus bar 2 and one second bus bar 3. It can be understood that, at this time, the gap between the two battery string sets 1 is shielded by the first insulating shielding bar 5, that is, the portion of the first bus bar 2 corresponding to the gap is shielded, so that the first bus bar 2 is prevented from leaking to affect the appearance of the battery assembly.

Further, the battery assembly 10 further includes two first solder strips 4 and two black second insulating shielding bars 6, each first solder strip 4 is connected to one second bus bar 3, and each first solder strip 4 and the corresponding second bus bar 3 are located on the same plane, and each second insulating shielding bar 6 covers one first solder strip 4 and the corresponding second bus bar 3 of the first solder strip 4. It can be understood that the two second bus bars 3 are respectively located at two ends of the battery assembly 10 in the second direction, and in order to avoid that each second bus bar 3 and the corresponding first welding strip 4 affect the appearance of the battery assembly 10, each second bus bar 3 and the corresponding first welding strip 4 are covered by the second insulating shielding strip 6, so that the whole battery assembly 10 is uniform in color, i.e., completely black when viewed from the front, and the appearance of the battery assembly 10 is improved. In addition, the first welding strips 4 and the second bus bars 3 do not need to be bent, so that the risk of fracture or hidden fracture is reduced, and the reliability of the battery assembly 10 is improved.

Of course, in other embodiments, two second bus bars 3 may be omitted, two second solder strips may be disposed on the back of the battery string group 1, two ends of each battery string 11 are connected to the first bus bar 2 and one second solder strip, respectively, and two second insulating shielding bars 6 may be omitted.

Further, in the present embodiment, in the second direction, the plurality of battery string groups 1 are divided to form a plurality of battery units, each battery unit includes a plurality of battery strings 11, the first bus bar 2 is disposed at a position where two adjacent battery units are in contact, and both ends of each battery string 11 of each battery unit are respectively connected to the same diode through one first bus bar 2 and one second bus bar 3. One first bus bar 2 may be provided at a position where two adjacent battery cells are in contact with each other, or two or more first bus bars 2 may be provided. It can be understood that, the battery string group 1 is divided into a plurality of battery units, and each battery unit is connected with a diode in parallel, the battery assembly 10 adopts a separated circuit design, the hot spot effect is reduced, and the current adaptation loss of the battery slice 1111 is reduced.

Specifically, in the present embodiment, one first bus bar 2 is disposed at each position where two adjacent battery cells are in contact, that is, three first bus bars 2 are disposed in total, the plurality of battery string groups 1 are divided to form four battery cells, each battery cell includes six battery strings 11, and one first bus bar 2 is disposed at each position where two adjacent battery cells are in contact. Of course, in other embodiments, the number of the first bus bars 2 and the number of the battery cells may be set or divided according to actual needs.

Further, battery pack 10 still includes terminal box and a plurality of lead-out wire, and the terminal box is located the back of battery cluster 1, and every lead-out wire all connects in the terminal box, and every lead-out wire connects in first busbar 2 or second busbar 3, and a plurality of lead-out wires all are located the clearance between two adjacent battery clusters 1, and one of them first insulating hides strip 5 and covers in a plurality of lead-out wires to avoid the lead-out wire to leak and influence battery pack's outward appearance.

As shown in fig. 4, the laminated photovoltaic module further includes a glass substrate 8 and a black back plate 7, the battery module 10 is disposed between the back plate 7 and the glass substrate 8, and the front surface of the battery string group 1 faces the glass substrate 8. Further, the laminated photovoltaic module further comprises a transparent packaging film 9, and the packaging film 9 is arranged between the back plate 7 and the cell module 10 and between the glass substrate 8 and the cell module 10. In this embodiment, the encapsulating film 9 is an EVA film.

Further, the laminated photovoltaic module further includes a mounting frame (not shown), and the glass substrate 8, the back sheet 7 and the battery module 10 are mounted in the mounting frame.

In summary, the shingled photovoltaic module provided by the embodiment, the battery assembly 10 of the shingled photovoltaic module shields the gap between two adjacent battery string sets 1 through the black first insulating shielding strip 5, so as to avoid the bus bar leakage to affect the appearance of the battery assembly 10, and the first insulating shielding strip 5 can insulate the two corresponding battery string sets 1, thereby avoiding the occurrence of short circuit.

The above embodiments have been described only the basic principles and features of the present invention, and the present invention is not limited by the above embodiments, and is not departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A shingled photovoltaic module comprising a cell assembly (10), said cell assembly (10) comprising a plurality of cell strings (1) spaced apart in a first direction, the battery string group (1) comprises a plurality of battery strings (11) which are sequentially abutted along a second direction, the first direction is vertical to the second direction, and the second direction is the arrangement direction of the plurality of battery pieces (111) of the battery string (11), the battery assembly (10) further comprises a plurality of first insulating shading strips (5) which are black and extend along the second direction, the first insulating shading strip (5) covers a gap between two adjacent battery string groups (1), and in the first direction, each first insulation shading strip (5) covers at least part of the front surface of each battery string group (1) positioned on two sides of the first insulation shading strip.

2. The shingled photovoltaic module according to claim 1, wherein the front surface of the cell (111) is provided with a plurality of first main grid lines (1111) in the first direction, the first main grid line (1111) at the outermost side is spaced apart from the corresponding edge line of the cell (111) by L1, the distance between two adjacent cell strings (1) is L2, and the width of the first insulating shading strip (5) in the first direction is L2+2L 1.

3. The shingled photovoltaic module according to claim 1, wherein the cell module (10) further comprises a plurality of first bus bars (2) and two second bus bars (3) respectively located at both ends of the cell module (10) in the second direction, the first bus bars (2) and the second bus bars (3) each extending in the first direction, the first bus bars (2) being located at the back of the cell string group (1), both ends of each cell string (11) being connected to one of the first bus bars (2) and one of the second bus bars (3), respectively.

4. A shingled photovoltaic module according to claim 3 wherein the cell module (10) further comprises two first solder strips (4) and two black second insulating screen strips (6), each first solder strip (4) being connected to one of the second bus bars (3) and each first solder strip (4) and the corresponding second bus bar (3) being located on the same plane, each second insulating screen strip (6) covering one first solder strip (4) and the second bus bar (3) corresponding to that first solder strip (4).

5. The shingled photovoltaic module according to claim 3, wherein a plurality of the cell string groups (1) are divided to form a plurality of cell units along the second direction, each cell unit comprises a plurality of the cell strings (11), the first bus bars (2) are arranged at positions where two adjacent cell units are in contact, and both ends of each cell string (11) of each cell unit are connected in parallel with the same diode through one first bus bar (2) and one second bus bar (3).

6. A shingled photovoltaic module according to claim 3 wherein the cell assembly (10) further comprises a junction box and a plurality of outlets, each outlet connected to the junction box and each outlet connected to either the first bus bar (2) or the second bus bar (3), a plurality of the outlets each being located in a gap between adjacent cell strings (1), wherein one of the first insulating masking strips (5) covers a plurality of the outlets.

7. The shingled photovoltaic module according to claim 1, wherein the cell module (10) further comprises a plurality of first bus bars (2) and two second solder ribbons, the first bus bars (2) and the second solder ribbons each extending in the first direction, and the plurality of first bus bars (2) and the two second solder ribbons each being located on the back side of the cell string group (1), both ends of each cell string (11) being connected to one of the first bus bars (2) and one of the second solder ribbons, respectively.

8. A laminated photovoltaic module according to claim 1, further comprising a glass substrate (8) and a black backsheet (7), the cell assembly (10) being arranged between the backsheet (7) and the glass substrate (8) with the front side of the cell string (1) facing the glass substrate (8).

9. The laminated photovoltaic module according to claim 8, further comprising a transparent encapsulating film (9), the encapsulating film (9) being provided both between the backsheet (7) and the cell assembly (10) and between the glass substrate (8) and the cell assembly (10).

10. The laminated photovoltaic module according to claim 9, further comprising a mounting frame, wherein the backsheet (7), the glass substrate (8) and the cell assembly (10) are mounted within the mounting frame.