阅读说明：本技术 透光通风光伏组件 (Light-transmitting ventilating photovoltaic module ) 是由 刘洪明 刘秤明 赖兴余 吴云溪 顾忆华 胡红坡 王辉 伍世平 谢松延 连雪茹 陈 于 2021-08-31 设计创作，主要内容包括：本发明提供的透光通风光伏组件包括电池片组件和用于封装电池片组件的光伏玻璃,电池片组件包括至少一个电池串,电池串包括通过焊带串联的至少两片电池片,焊带包括位于在每片电池片上的焊带段；光伏玻璃上设置至少一个通风孔,电池串中形成至少一个避让位,通风孔与避让位连通；电池串还包括汇流件,汇流件电连接在位于避让位相对两侧的两个电池片上的焊带段之间,且汇流件弯折延伸而避绕避让位。本发明的光伏玻璃上应用在农光互补或渔光互补时具有较好透光、通风透气和透雨水功能,应用在光伏幕墙时带来较好的采光和通风透气效果而在建筑体内营造良好的人居以及办公环境,且实现自清洁和自降温,提高发电量。(The light-transmitting ventilation photovoltaic module comprises a cell module and photovoltaic glass for packaging the cell module, wherein the cell module comprises at least one cell string, the cell string comprises at least two cells connected in series through a solder strip, and the solder strip comprises a solder strip section positioned on each cell; the photovoltaic glass is provided with at least one vent hole, at least one avoidance position is formed in the battery string, and the vent hole is communicated with the avoidance position; the battery string further comprises a confluence piece, the confluence piece is electrically connected between the welding strip sections on the two battery pieces on the two opposite sides of the avoidance position, and the confluence piece bends and extends to avoid the avoidance position. The photovoltaic glass has good light transmission, ventilation and rainwater penetration functions when being applied to agricultural light complementation or fishing light complementation, brings good daylighting and ventilation effects when being applied to a photovoltaic curtain wall so as to build good living and office environments in a building body, realizes self-cleaning and self-cooling, and improves the generated energy.)

1. The light-transmitting ventilation photovoltaic module comprises a cell piece assembly and photovoltaic glass for packaging the cell piece assembly, wherein the cell piece assembly comprises at least one cell string, the cell string comprises at least two cell pieces which are connected in series through a solder strip, and the solder strip comprises a solder strip section positioned on each cell piece;

the method is characterized in that:

the photovoltaic glass is provided with at least one vent hole, at least one avoidance position is formed in the battery string, and the vent hole is communicated with the avoidance position;

the battery string further comprises a confluence piece, the confluence piece is electrically connected between the two welding strip sections on the two opposite sides of the avoidance position, and the confluence piece is bent and extended to avoid the avoidance position.

2. A light-transmissive ventilated photovoltaic module according to claim 1, wherein:

at least two groups of the battery strings are arranged along a first direction;

the avoidance positions are provided with communication ports facing the first direction, two adjacent groups of the battery strings are communicated through the communication ports and two adjacent groups of the battery strings are communicated with the same ventilation holes in the first direction.

3. A light-transmissive ventilated photovoltaic module according to claim 2, wherein:

the bus bar piece comprises a first extension section, a second extension section and a third extension section which are sequentially connected, and the first extension section and the third extension section are respectively and electrically connected with the welding strip sections on the two battery pieces;

in the first direction, the second extending section is located on one side of the battery string far away from the communication port.

4. A light-transmissive ventilated photovoltaic module according to claim 3, wherein:

the included angle between the first extension section and the second extension section is a right angle, and/or the included angle between the second extension section and the third extension section is a right angle.

5. A light-transmissive ventilated photovoltaic module according to claim 2, wherein:

in the first direction, two adjacent bus bars have a space therebetween.

6. A light-transmitting ventilated photovoltaic module according to any one of claims 1 to 5, characterized in that:

a plurality of battery pieces in the battery string are arranged along a second direction;

in the second direction, printing opacity ventilation photovoltaic module includes a plurality of position units that the size equals, the battery piece occupies one the position unit, it occupies one or more to dodge the position unit.

7. A light-transmissive ventilated photovoltaic module according to claim 6, wherein:

the number of the battery pieces in the battery string is equal, and the number of the position units occupied by the avoidance positions in the battery string is equal.

8. A light-transmissive ventilated photovoltaic module according to claim 7, wherein:

the number of the avoidance bits in the plurality of battery strings is equal.

9. A light-transmissive ventilated photovoltaic module according to claim 7, wherein:

the number of the avoidance bits in at least two of the battery strings is not equal.

10. A light-transmitting ventilated photovoltaic module according to any one of claims 1 to 5, characterized in that:

the inner profile of the vent hole is rectangular.

Technical Field

The invention relates to the technical field of solar power generation, in particular to a light-transmitting ventilation photovoltaic module.

Background

Current photovoltaic module includes single glass photovoltaic module and dual glass photovoltaic module, and wherein, single glass photovoltaic module generally takes photovoltaic glass, packaging material, battery piece subassembly, packaging material and backplate sandwich structure coincide in proper order, installs the frame additional all around simultaneously. The double-glass photovoltaic module adopts a sandwich structure formed by sequentially overlapping photovoltaic glass, packaging materials, a cell piece assembly, the packaging materials and the photovoltaic glass, and no frame is arranged around the double-glass photovoltaic module. Photovoltaic glass generally is toughened glass, and packaging material is encapsulation glued membranes such as EVA, POE, PVB, and the battery piece subassembly includes a plurality of battery clusters, and the battery cluster is including utilizing the polylith battery piece of welding rod series connection, and the battery piece is single crystal or polycrystal battery piece.

The problem that current photovoltaic module exists is, in special application scenes such as complementary, the complementary of fishing light of farming light, photovoltaic curtain wall, to the function requirements such as the printing opacity of photovoltaic module, ventilation and penetrating rainwater higher, current photovoltaic module can't satisfy this requirement.

Disclosure of Invention

The invention aims to provide a light-transmitting and ventilating photovoltaic module which meets the functional requirements of light transmission, ventilation, rainwater penetration and the like.

The light-transmitting ventilation photovoltaic module comprises a cell module and photovoltaic glass for packaging the cell module, wherein the cell module comprises at least one cell string, the cell string comprises at least two cells connected in series through a solder strip, and the solder strip comprises a solder strip section positioned on each cell; the photovoltaic glass is provided with at least one vent hole, at least one avoidance position is formed in the battery string, and the vent hole is communicated with the avoidance position; the battery string further comprises a confluence piece, the confluence piece is electrically connected between the welding strip sections on the two battery pieces on the two opposite sides of the avoidance position, and the confluence piece bends and extends to avoid the avoidance position.

It is visible by above-mentioned scheme, set up in the string of ventilation hole and battery on the photovoltaic glass and dodge the position and make printing opacity ventilation photovoltaic module go up and form the function through-hole, in complementary or the complementary application of fishing light of farming light, printing opacity ventilation photovoltaic module has better printing opacity, ventilation and the rainwater function of permeating through for have better sun illumination in the big-arch shelter, daylighting is good, ventilation, can also bring the irrigation of natural rainwater, is favorable to farming and fishery to breed. In the photovoltaic curtain wall application, the photovoltaic curtain wall with the functional through holes can bring better daylighting and ventilation effect, and good human residence and office environment are built in the building body. In addition, the light-transmitting ventilation photovoltaic module is provided with the functional through holes, so that the gas flow on the front side and the back side of the light-transmitting ventilation photovoltaic module is accelerated, rainwater is favorably utilized to realize self-cleaning, the temperature of the light-transmitting ventilation photovoltaic module is favorably reduced, and the generating capacity of the light-transmitting ventilation photovoltaic module is improved.

The further scheme is that at least two groups of battery strings are arranged along a first direction; the avoiding positions are provided with communication ports facing to the first direction, two adjacent battery strings are communicated with each other through the communication ports in the first direction, and two adjacent battery strings are communicated with the same ventilation hole.

Therefore, the avoidance positions of the two adjacent battery strings are communicated and combined under the arrangement, and then a functional through hole with larger size is formed on the light-transmitting ventilation photovoltaic module, so that lighting and ventilation are further facilitated.

The bus bar piece comprises a first extending section, a second extending section and a third extending section which are connected in sequence, and the first extending section and the third extending section are respectively and electrically connected with the welding strip sections on the two battery pieces; in the first direction, the second extending section is positioned on one side, far away from the communication opening, of the battery string.

It is thus clear that this setting makes the space maximize of dodging the position, further increases the size of function through-hole on the printing opacity ventilation photovoltaic module then, further is favorable to daylighting and ventilation.

In a further aspect, an angle between the first extending section and the second extending section is a right angle, and/or an angle between the second extending section and the third extending section is a right angle.

From top to bottom, because a plurality of battery pieces are the rectangle array and arrange among the printing opacity ventilation photovoltaic module, this setting does benefit to the processing of piece that converges, does benefit to the position setting of piece that converges, does benefit to converge and welds between the area.

Another further aspect is that, in the first direction, two adjacent bus bars have a space therebetween.

Therefore, the arrangement can avoid misconnection of the bus bar between different battery strings.

The further scheme is that a plurality of battery pieces in the battery string are arranged along a second direction; in the second direction, the light-transmitting ventilation photovoltaic module comprises a plurality of position units with equal sizes, the battery piece occupies one position unit, and the avoidance position occupies one or more position units.

From top to bottom, this setting does benefit to the position of calculating the ventilation hole and arranges the ventilation hole, does benefit to and installs and fix a position the battery piece.

The further scheme is that the number of the battery pieces in the plurality of battery strings is equal, and the number of the position units occupied by the avoidance positions in the plurality of battery strings is equal.

In a further aspect, the number of the back-off bits in the plurality of battery strings is equal.

In a further development, the number of the bypass bits in at least two battery strings is different.

It is from top to bottom visible, under this setting, the battery piece quantity in every battery cluster keeps unanimous and guarantees that the power output of every battery cluster is unanimous, under this prerequisite, the position of dodging that occupies equal quantity of position unit can concentrate the setting according to actual demand also can the split setting, consequently sets up the degree of freedom great, more can satisfy different daylighting under the different scenes, ventilative or the rainwater demand that passes through.

Further, the inner contour of the ventilation hole is rectangular.

As can be seen, this arrangement allows the size of the vent to be larger.

Drawings

Fig. 1 is a structural view of a light-transmitting ventilated photovoltaic module according to a first embodiment of the present invention.

Fig. 2 is a structural diagram of a cell string in a first embodiment of the light-transmitting ventilated photovoltaic module according to the invention.

Fig. 3 is an exploded view of a cell string in a first embodiment of a light-transmissive ventilated photovoltaic module according to the present invention.

Fig. 4 is a structural view of a photovoltaic glass in a first embodiment of the light-transmitting ventilated photovoltaic module according to the present invention.

Fig. 5 is a schematic view of an array of location units in a first embodiment of the light-transmissive ventilated photovoltaic module of the present invention.

Fig. 6 is a structural view of a cell string in a second embodiment of the light-transmissive ventilated photovoltaic module according to the present invention.

Fig. 7 is a structural view of a photovoltaic glass in a second embodiment of the light-transmitting ventilated photovoltaic module according to the present invention.

Fig. 8 is a schematic view of an array of location units in a second embodiment of the light-transmissive ventilated photovoltaic module of the present invention.

Fig. 9 is a schematic view of an array of position units in a third embodiment of the light-transmissive ventilated photovoltaic module according to the present invention.

Fig. 10 is a structural view of a cell string in a fourth embodiment of the light-transmitting ventilated photovoltaic module according to the present invention.

Detailed Description

First embodiment of light-transmitting ventilated photovoltaic Module

Referring to fig. 1 to 5, the drawings establish a unified rectangular coordinate system, in which the x-axis direction is the first direction of the present invention, and the y-axis direction is the second direction of the present invention.

Referring to fig. 1, the present embodiment is a dual-glass light-transmitting ventilation photovoltaic module, which includes a photovoltaic glass 1, an encapsulant (not shown in the figure), a cell sheet module 2, an encapsulant (not shown in the figure), and a back photovoltaic glass (not shown in the figure) sequentially arranged along a thickness direction. The photovoltaic glass 1 and the back photovoltaic glass are both toughened glass or semi-toughened glass, an AR antireflection film is arranged on the upper surface of the photovoltaic glass 1 and can reduce sunlight reflection, a fluff microstructure is arranged on the lower surface and has an antireflection effect on sunlight, the light transmittance of the photovoltaic glass 1 is larger than or equal to 91%, and the light transmittance of the back photovoltaic glass is larger than or equal to 88%. In addition, the packaging material is a packaging adhesive film such as EVA, POE, or PVB, and the battery piece 31 in the battery piece assembly 2 is a single crystal or polycrystalline battery piece.

Referring to fig. 1 and 2, the battery sheet assembly 2 includes six battery strings 3, each battery string 3 includes eight battery sheets 31 connected in series by a solder strip, and the plurality of battery sheets 31 in the battery string 3 are sequentially arranged along the y-axis direction; in the battery sheet assembly 2, six battery strings 3 are sequentially arranged in the x-axis direction such that a plurality of battery sheets 31 form a rectangular array with notches. In addition, referring to fig. 1, the cell sheet assembly 2 further includes bus bars 29 provided on the y-axis direction ends, the bus bars 29 being electrically connected to the solder ribbon on each cell string 3, and three electrode lead-out holes 291 provided on the back photovoltaic glass to communicate with the bus bars 29.

As shown in fig. 1 and 2, the gaps formed in the array of the cells 31 in the light-transmitting and ventilating photovoltaic module are formed by combining the avoidance positions 30 in two adjacent cell strings 3, two avoidance positions 30 are formed in each cell string 3, but the avoidance positions 30 are located on the cell strings 3 on both sides (both sides in the left-right direction in the figure) in the x-axis direction, the avoidance positions 30 are close to both ends (both ends in the up-down direction in the figure) in the y-axis direction, and the avoidance positions 30 are located on the cell strings 3 in the middle of the x-axis direction, and are close to the middle of the y-axis direction.

Referring to fig. 2 and 3, on the battery string 3, in the y-axis direction, the escape position 30 is formed between two adjacent battery pieces 31. The solder strip comprises a plurality of solder strip sections 32 positioned on each battery piece 31, the battery string 3 further comprises two bus pieces 33, the bus pieces 33 are electrically connected between the plurality of solder strip sections 32 positioned on the two battery pieces 31 on the two opposite sides of the avoidance position 30, and the bus pieces 33 are bent and extended to avoid the avoidance position 30.

The bus member 33 is in a shape of "u", the bus member 33 includes a first extending section 331, a second extending section 332 and a third extending section 333 which are connected in sequence, the first extending section 331 extends along the x-axis in the positive direction, the second extending section 332 bends from the extending end of the first extending section 331 at a right angle and extends along the y-axis in the negative direction, the third extending section 333 bends from the extending end of the second extending section 332 at a right angle and extends along the x-axis in the negative direction, and the first extending section 331 and the third extending section 333 are respectively and electrically connected with the solder strip sections 32 on the two battery pieces 31.

Referring to fig. 1 and 2, the gap is formed by two adjacent evasion positions 30 in the x-axis direction. As shown in fig. 2 and 3, in the two adjacent battery strings 3, the escape site 30 of one battery string 3 has a communication port 301 facing the positive x-axis direction, and the escape site 30 of the other battery string 3 has a communication port 301 facing the negative x-axis direction, so that the two escape sites 30 in the two adjacent battery strings 3 communicate with each other in the x-axis direction through the two communication ports 301. Correspondingly, on the battery string 3, in the x-axis direction, the second extension 332 of the bus bar 33 is located on the side of the battery string 3 away from the communication port 301 to increase the avoidance position 30. In addition, as seen from fig. 1, two adjacent bus bars 33 have a space therebetween in the x-axis direction.

With reference to fig. 1 and 4, the photovoltaic glass 1 on the front side of the light-transmitting ventilation photovoltaic module is provided with six ventilation holes 10, the inner contours of the ventilation holes 10 are rectangular, each ventilation hole 10 is communicated with the notch formed by two avoiding positions 30 in the thickness direction, and similarly, the back photovoltaic glass (not shown in the figure) on the back side of the light-transmitting ventilation photovoltaic module is also provided with six ventilation holes communicated with the notch, so that six ventilation function holes penetrating through the light-transmitting ventilation photovoltaic module in the thickness direction are formed on the light-transmitting ventilation photovoltaic module. Therefore, when the sunlight complementation module is applied to agriculture and fishery complementation, the light-transmitting and ventilating photovoltaic module has good light-transmitting, ventilating and rainwater-transmitting functions due to the ventilation functional holes, so that the greenhouse has good sunlight, lighting and ventilating functions, can irrigate natural rainwater, and is beneficial to agricultural planting and fishery cultivation. When the light-transmitting ventilation photovoltaic module is applied to the photovoltaic curtain wall, good daylighting and ventilation effects can be brought to the photovoltaic curtain wall, and good living and office environments can be built in a building body. In addition, the light-transmitting ventilation photovoltaic module is provided with the ventilation function hole, so that the gas flow on the front side and the back side of the light-transmitting ventilation photovoltaic module is accelerated, rainwater is favorably utilized to realize self-cleaning, the temperature of the light-transmitting ventilation photovoltaic module is favorably reduced, and the generating capacity of the light-transmitting ventilation photovoltaic module is improved.

Referring to fig. 5, the light-transmissive ventilated photovoltaic module includes a predetermined rectangular array of position units, the rectangular array of position units includes 10 × 6 position units 100, and each of the position units 100 has a size in the x-axis direction and a size in the y-axis direction that are equal to each other. As can be seen from fig. 1, 2 and 5, each battery plate 31 occupies one position unit 100, and each avoidance space 33 also occupies one position unit 100. Therefore, this arrangement facilitates processing of the bus bar 33, facilitates setting of the position of the bus bar 33 without affecting the arrangement of the battery pieces 31, and facilitates welding between the bus bar 33 and the solder ribbon section 32.

Second embodiment of light-transmitting ventilated photovoltaic Module

Referring to fig. 6 to 8, in this embodiment, only one avoidance position 40 is disposed in each of the two battery strings in the middle of the x-axis direction, the avoidance position 40 occupies two continuous position units 100 in the y-axis direction, correspondingly, the two avoidance positions 40 occupy four position units 100 arranged in a rectangular array as a gap formed by communicating in the x-axis direction, and correspondingly, a larger vent hole 50 close to the rectangle is disposed in the center of the photovoltaic glass 5.

Under the arrangement, although the number of the avoidance positions 40 of the two battery strings in the middle part is less than the number of the avoidance positions 40 of the battery strings on the two sides, actually, the position units 100 occupied by the avoidance positions 40 on each battery string are equal, so that the number of the battery pieces connected in series on each battery string is equal, the performance of the light-transmitting ventilating photovoltaic module cannot be influenced, and the ventilating effect of the light-transmitting ventilating photovoltaic module can be changed in the arrangement mode.

Similarly, on the premise of keeping the number of the battery pieces connected in series on each battery string equal, the positions of the avoidance positions 40 and the number of the avoidance positions 40 have more other arrangement modes, so that the light-transmitting ventilation photovoltaic module has better applicability to meet the requirements of lighting, ventilation and rainwater penetration under different occasions.

Light transmissive ventilated photovoltaic module third embodiment

Referring to fig. 9, in this embodiment, each battery string is provided with two avoidance positions 60 occupying one position unit 100, the avoidance positions 60 between two adjacent sets of battery strings are not communicated, and each avoidance position 60 forms an independent gap to be communicated with a vent hole on the photovoltaic glass. This setting does benefit to the quantity that increases ventilation function hole, does benefit to the ventilation function hole and spreads all over on printing opacity ventilation photovoltaic module.

Transparent ventilated photovoltaic module fourth embodiment

Referring to fig. 10, in the present embodiment, the bus bar 73 is in a "V" shape, and includes only a first extending section 731 and a second extending section 732 that are connected by bending, a bending angle between the first extending section 731 and the second extending section 732 is a right angle, and an included angle between the first extending section 731 and the second extending section 732 and the x-axis direction is 45 degrees, so that the avoiding positions 730 formed at the avoiding positions of the bus bar 73 are triangular, and two adjacent avoiding positions 730 form a prismatic notch. Correspondingly, the inner contour of the ventilation hole arranged on the light-transmitting ventilation photovoltaic module is prismatic. In this arrangement, the escape position 730 occupies two position units 100 that are continuous in the y-axis direction.

In other embodiments, the inner contour of the vent hole on the photovoltaic glass may not match with the inner contour of the notch formed by the avoidance position, for example, the inner contour of the notch is rectangular, and the inner contour of the vent hole may be circular, oval or waist-shaped.

Finally, it should be emphasized that the above-described preferred embodiments of the present invention are merely examples of implementations, rather than limitations, and that many variations and modifications of the invention are possible to those skilled in the art, without departing from the spirit and scope of the invention.