CN216849957U - Double-sided power generation flexible photovoltaic module - Google Patents

Abstract

The utility model provides a flexible photovoltaic module of two-sided electricity generation, the flexible photovoltaic module of two-sided electricity generation includes: the conductive back plate is made of a transparent material; the plurality of battery pieces comprise at least one battery pack, one battery pack comprises a plurality of battery pieces, the plurality of battery pieces of one battery pack are arranged at intervals along the length direction of the conductive backboard, the front surface of one of two adjacent battery pieces of one battery pack is electrically connected with the conductive backboard, and the back surface of the other battery piece is electrically connected with the conductive backboard; and the packaging film is arranged on one side of the plurality of battery pieces far away from the conductive backboard in the thickness direction of the conductive backboard, and is made of a transparent material. The utility model discloses a flexible photovoltaic module of two-sided electricity generation has the availability factor height, advantage that the bending resistance can be high.

Description

Double-sided power generation flexible photovoltaic module

Technical Field

The utility model relates to a photovoltaic solar cell field specifically, relates to a flexible photovoltaic module of two-sided electricity generation.

Background

In the related technology, the cells of the photovoltaic module are connected in series by using the solder strips, the solder strips have internal resistance, the power loss of the module is caused, meanwhile, gaps are reserved for the solder strips among the cells of the photovoltaic module, the area of the photovoltaic module is increased, the conversion efficiency of the photovoltaic module is reduced, and the development of the flexibility of the photovoltaic module is influenced.

SUMMERY OF THE UTILITY MODEL

The present invention aims at solving at least one of the technical problems in the related art to a certain extent.

Therefore, the embodiment of the utility model provides a flexible photovoltaic module of two-sided electricity generation, this flexible photovoltaic module of two-sided electricity generation has the availability factor height, advantage that bending resistance can be high.

The utility model discloses flexible photovoltaic module of two-sided electricity generation includes: the conductive back plate is made of a transparent material; the plurality of battery pieces comprise at least one battery pack, one battery pack comprises a plurality of battery pieces, the plurality of battery pieces of one battery pack are arranged at intervals along the length direction of the conductive backboard, the front surface of one of two adjacent battery pieces of one battery pack is electrically connected with the conductive backboard, and the back surface of the other battery piece is electrically connected with the conductive backboard; and the packaging films are arranged on one sides of the plurality of battery pieces far away from the conductive back plate in the thickness direction of the conductive back plate, and the packaging films are made of transparent materials.

The utility model discloses flexible photovoltaic module of two-sided electricity generation has the availability factor height, advantage that bending resistance performance is high.

In some embodiments, the front surface and the back surface of the battery piece are oppositely arranged in the thickness direction of the conductive back plate.

In some embodiments, the battery pack is provided in plurality, and the plurality of battery packs are arranged at intervals along the width direction of the conductive backboard.

In some embodiments, the utility model provides a flexible photovoltaic module of two-sided electricity generation still includes the panel, the battery piece is formed by the cutting of above-mentioned panel.

In some embodiments, the conductive backsheet comprises silver nanowires through which the plurality of battery pieces are electrically connected.

In some embodiments, the conductive back plate further comprises a packaging enclosure defining a mounting slot with the conductive back plate, the plurality of battery packs being disposed within the mounting slot.

In some embodiments, the enclosure comprises a plurality of bus bars by which two adjacent battery packs are electrically connected to connect a plurality of the battery packs in parallel.

In some embodiments, the encapsulation film is sealingly connected to the encapsulation enclosure.

In some embodiments, the encapsulation film is made of PET material.

In some embodiments, the double-sided power generating flexible photovoltaic module of embodiments of the present invention further comprises a diode connected in series with one of the plurality of battery packs.

Drawings

Fig. 1 is a schematic front view of a double-sided power generation flexible photovoltaic module according to an embodiment of the present invention.

Fig. 2 is a left side view schematic diagram of the flexible photovoltaic module of the embodiment of the utility model discloses two-sided electricity generation.

Reference numerals are as follows:

a conductive backsheet 1; packaging the enclosing plate 11; a first plate 111; a second plate 112;

a battery pack 2; a battery piece 21;

and an encapsulation film 3.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

As shown in fig. 1 and fig. 2, the flexible photovoltaic module of the embodiment of the present invention includes: the conductive back plate 1, the battery piece 21 and the packaging film 3.

The conductive backboard 1 is made of a transparent material, the plurality of battery pieces 21 are provided, the plurality of battery pieces 21 include at least one battery pack 2, one battery pack 2 includes the plurality of battery pieces 21, the plurality of battery pieces 21 of one battery pack 2 are arranged at intervals along the length direction (the up-down direction in fig. 1) of the conductive backboard 1, the front surface of one of two adjacent battery pieces 21 of one battery pack 2 is electrically connected with the conductive backboard 1, the back surface of the other battery piece is electrically connected with the conductive backboard 1, the packaging film 3 is arranged on one side of the plurality of battery pieces 21, which is far away from the conductive backboard 1 in the thickness direction (the front-back direction in fig. 1) of the conductive backboard 1, and the packaging film 3 is made of a transparent material.

Specifically, as shown in fig. 1, one battery pack 2 is composed of a plurality of battery pieces 21, the length direction of the battery pack 2 is consistent with the up-down direction, one battery piece 21 has a front surface and a back surface, the front surface of one battery piece 21 in one battery pack 2 is electrically connected with the conductive back plate 1, the back surface of the other battery piece 21 adjacent to the battery piece 21 in the up-down direction is electrically connected with the conductive back plate 1, and the front side surface of the battery piece 21 is encapsulated by the encapsulating film 3.

It can be understood that, electrically conductive backplate 1 is made by transparent material, and the leading flank of battery piece 21 uses transparent encapsulating film 3 to encapsulate, is favorable to realizing the utility model discloses a two-sided electricity generation function of the flexible photovoltaic module of two-sided electricity generation, wherein, a plurality of battery pieces 21 in group battery 2 establish ties through electrically conductive backplate 1, have reduced the clearance between the battery piece 21, have improved the availability factor, and group battery 2 that a plurality of battery pieces 21 constitute has better bending resistance simultaneously.

That is to say, the inventor finds the mode that adopts the solder strip to concatenate between photovoltaic module's the battery piece among the correlation technique, makes and need reserve the clearance for the solder strip between the battery piece among the correlation technique to lead to the fact the increase of photovoltaic module area, still cause the loss of photovoltaic module power because of the internal resistance that solder strip itself exists, consequently, the utility model discloses a two-sided flexible photovoltaic module's of electricity generation a plurality of battery pieces can establish ties through electrically conductive backplate, thereby has avoided using the solder strip to concatenate, thereby has reduced this photovoltaic module's area.

In other words, the photovoltaic module that adopts electrically conductive backplate to concatenate (promptly the utility model discloses the flexible photovoltaic module of two-sided electricity generation) is the same with the photovoltaic module's that adopts the solder strip to concatenate area, and the battery piece among the photovoltaic module that adopts electrically conductive backplate to concatenate is more than the photovoltaic module's that adopts the solder strip to concatenate battery piece.

Therefore, the utility model discloses flexible photovoltaic module of two-sided electricity generation has the availability factor height, advantage that bending resistance performance is high.

In some embodiments, the front surface and the back surface of the battery sheet 21 are disposed opposite to each other in the thickness direction of the conductive backsheet 1.

It can be understood that, as shown in fig. 1, when the front side of one cell 21 is the front side, the back side of the cell 21 is the back side, that is, the front sides of a plurality of cells 21 of one battery pack 2 are located on the same plane, thereby improving the shielding resistance of the double-sided power generation flexible photovoltaic module according to the embodiment of the present invention.

In some embodiments, as shown in fig. 1, there are a plurality of battery packs 2, the plurality of battery packs 2 are arranged at intervals along the width direction (e.g., the left-right direction in fig. 1) of the conductive backplane 1, the conductive backplane 1 includes a nano silver wire (not shown), and the plurality of battery pieces 21 are electrically connected through the nano silver wire.

Specifically, a plurality of battery pieces 21 have realized the series-parallel connection between a plurality of battery pieces 21 through the nanometer silver line, and it can be understood that, a plurality of battery pieces 21 are through the parallelly connected back of nanometer silver line series-parallel connection, avoid the influence of partial battery piece 21 among a plurality of battery pieces 21 to damage this photovoltaic module, thereby improve the utility model discloses the flexible photovoltaic module practicality of two-sided electricity generation.

Alternatively, a plurality of battery packs 2 are sequentially arranged at intervals from left to right, the number of the battery pieces 21 in each battery pack 2 is equal, and the upper side walls of the plurality of battery packs 2 are flush, then, assuming that there are N battery packs 2, there are M battery pieces 21 in each battery pack 2, the leftmost battery pack 2 is located in the first column, the uppermost battery piece 21 is located in the first row, when the front side of the first row of battery pieces 21 in the first column of battery packs 2 is the front side, the front side of the second row of battery pieces 21 in the first column of battery packs 2 is the back side, the front side of the third row of battery pieces 21 in the first column of battery packs 2 is the front side, and so on, until the M battery pieces 21 are arranged completely, that is, the first column of battery packs 2 is arranged completely; the arrangement of the plurality of battery cells 21 in the second row of battery packs 2 is the same as that in the first row, and so on until the arrangement of the N battery packs 2 is completed.

It can be understood that, change the quantity of group battery 2 or battery piece 21, can adjust the utility model discloses flexible photovoltaic module electric current of two-sided electricity generation or voltage to be suitable for the photovoltaic module of different specifications.

Preferably, the plurality of battery packs 2 are sequentially arranged at intervals from left to right, the number of the battery pieces 21 in each battery pack 2 is equal, and the upper side walls of the plurality of battery packs 2 are flush, then, assuming that there are X battery packs 2, there are Y battery pieces 21 in each battery pack 2, the leftmost battery pack 2 is located in the first column, the uppermost battery piece 21 is located in the first row, when the front side of the first row of battery pieces 21 in the first column of battery packs 2 is the front side, the front side of the second row of battery pieces 21 in the first column of battery packs 2 is the back side, and the front side of the third row of battery pieces 21 in the first column of battery packs 2 is the front side, and so on, until the arrangement of the X battery pieces 21 is completed, that is, the arrangement of the first column of battery packs 2 is completed; the front side surface of the first row of battery pieces 21 in the second row of battery pack 2 is the reverse side, the front side surface of the second row of battery pieces 21 in the second row of battery pack 2 is the front side, the front side surface of the third row of battery pieces 21 in the second row of battery pack 2 is the reverse side, and so on until the X-th battery piece 21 in the second row, the second row of battery pack 2 is set; the front side of the first row of battery cells 21 in the third column of battery pack 2 is the front side, the front side of the second row of battery cells 21 in the third column of battery pack 2 is the back side, the front side of the third row of battery cells 21 in the third column of battery pack 2 is the front side, and so on until X battery cells 21, that is, the third column of battery pack 2, are arranged, that is, all the battery packs 2 in odd columns are arranged in the same manner, and all the battery packs 2 in even columns are arranged in the same manner.

It can be understood that, the quantity of group battery 2 can be according to power demand and application scene, and set up the group battery 2 of different quantity, and simultaneously, the quantity of the battery piece 21 in every group battery 2 also can change and change according to the demand, that is to say, the quantity that changes battery piece 21 can be adjusted the utility model discloses the distance of two-sided flexible photovoltaic module of electricity generation in upper and lower direction, and the quantity that changes group battery 2 can be adjusted the utility model discloses the distance of two-sided flexible photovoltaic module of electricity generation in left and right directions of electricity generation, and then make this photovoltaic module can change on size and power to realize being suitable for different use scenes and satisfying different design requirements.

In some embodiments, the utility model discloses flexible photovoltaic module of two-sided electricity generation still includes the panel, and battery piece 21 is formed by the panel cutting.

It can be understood that, the panel can cut through laser, and uses a plurality of battery pieces 21 to concatenate, has not only reduced the clearance between a plurality of battery pieces 21, has still reduced the utility model discloses flexible photovoltaic module internal resistance of two-sided electricity generation has improved this photovoltaic module's bending resistance performance simultaneously.

In some embodiments, the conductive back plate 1 further includes a packaging enclosure 11, the packaging enclosure 11 and the conductive back plate 1 define a mounting slot, and the plurality of battery packs 2 are disposed in the mounting slot.

Specifically, as shown in fig. 1 and 2, the thickness direction of the enclosing board 11 is the same as the front-back direction, the rear end of the enclosing board 11 is connected to the front wall surface of the conductive backplane 1, and the silver nanowires are disposed on the front wall surface of the conductive backplane 1, so that the plurality of battery packs 2 are connected in series and parallel through the silver nanowires.

It can be understood that, the preceding lateral wall coating nanometer silver line material of electrically conductive backplate 1 to establish a plurality of battery pieces on electrically conductive backplate 1 and concatenate, that is to say, establish some battery pieces 21 among a plurality of battery pieces 21 on electrically conductive backplate 1 and damage the back, other battery pieces among a plurality of battery pieces 21 can also concatenate through electrically conductive backplate 1 coating nanometer silver line material, have further improved the utility model discloses flexible photovoltaic module of two-sided electricity generation's practicality.

In some embodiments, the enclosure 11 includes a plurality of bus bars (not shown), and two adjacent battery packs 2 are electrically connected by the bus bars so that the plurality of battery packs 2 are connected in parallel.

Specifically, encapsulation bounding wall 11 includes first board 111 and second board 112, and first board 111 and second board 112 set up along upper and lower direction relatively, and first board 111 is located the top of second board 112, and the part of a plurality of busbar sets up on first board 111, and another part of a plurality of busbar sets up on the second edition, and two adjacent group battery 2 can be parallelly connected through the busbar, and a plurality of busbars can connect a plurality of group battery 2 in parallel, in order to realize the flexible photovoltaic module's of two-sided electricity generation power generation function of the embodiment of the utility model.

In some embodiments, the encapsulation film 3 is hermetically connected with the encapsulation enclosure 11, and the encapsulation film 3 is made of a PET material.

It can be understood that the encapsulation membrane 3 can adopt the flexible encapsulation membrane 3 that the PET material supported, and the encapsulation membrane 3 links to each other with the front end of encapsulation bounding wall 11 to encapsulate a plurality of group battery 2 in the mounting groove, still avoid impurity such as external liquid to pollute group battery 2 simultaneously, and then guaranteed the utility model discloses the good light transmissivity of two-sided flexible photovoltaic module of electricity generation.

In some embodiments, the double-sided power generation flexible photovoltaic module of the embodiments of the present invention further includes a diode connected in series with one of the plurality of battery packs 2.

It can be understood that, the diode can be when battery piece 21 receives to shelter from or this photovoltaic module itself is unusual and cause group battery 2 short circuit, avoids this photovoltaic module to appear overheated fire or damage, and then improved the utility model discloses flexible photovoltaic module's of two-sided electricity generation security.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, 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 therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to 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. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

While embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations of the above embodiments may be made by those of ordinary skill in the art without departing from the scope of the present invention.

Claims (10)

1. A double-sided power generation flexible photovoltaic module, comprising:

the conductive back plate is made of a transparent material;

the battery pack comprises a plurality of battery pieces, each battery piece comprises at least one battery pack, each battery pack comprises a plurality of battery pieces, the battery pieces of each battery pack are arranged at intervals along the length direction of the conductive backboard, the front surface of one of two adjacent battery pieces of each battery pack is electrically connected with the conductive backboard, and the back surface of the other battery piece is electrically connected with the conductive backboard; and

the packaging film is arranged on one side, far away from the conductive back plate, of the plurality of battery pieces in the thickness direction of the conductive back plate, and the packaging film is made of transparent materials.

2. The double-sided power generating flexible photovoltaic module as claimed in claim 1, wherein the front and back sides of the cell sheet are oppositely disposed in the thickness direction of the conductive back sheet.

3. The bi-planar power generating flexible photovoltaic module of claim 2, wherein said plurality of battery packs is spaced apart along the width of said conductive backsheet.

4. The double-sided power generating flexible photovoltaic module of claim 3, further comprising a panel from which the cell pieces are cut.

5. The bi-facial power generating flexible photovoltaic module of claim 4, wherein the conductive backsheet comprises silver nanowires through which the plurality of battery pieces are electrically connected.

6. The bi-planar power generating flexible photovoltaic module of claim 5, wherein said conductive backsheet further comprises an encapsulating enclosure defining a mounting slot with said conductive backsheet, a plurality of said battery packs being disposed within said mounting slot.

7. The bi-planar power generating flexible photovoltaic module of claim 6, wherein the encapsulating enclosure comprises a plurality of bus bars by which two adjacent cell groups are electrically connected to connect a plurality of the cell groups in parallel.

8. The bi-planar power generating flexible photovoltaic module of claim 7, wherein said encapsulant film is sealingly attached to said encapsulant enclosure.

9. The bi-facial power generating flexible photovoltaic module of claim 8, wherein said encapsulation film is made of PET material.

10. The bi-lateral power generating flexible photovoltaic assembly of claim 9, further comprising a diode connected in series with one of the plurality of battery packs.

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