阅读说明：本技术 一种光伏百叶片的排布连接方法 (Arranging and connecting method for photovoltaic louver blades ) 是由 魏青竹 姬明良 蒋建慧 王春智 何招华 徐坚 汪献利 于 2021-09-13 设计创作，主要内容包括：本发明提供一种光伏百叶片的排布连接方法,在百叶片内设置内导线,并依照百叶片的正负极进行排布,连接相邻的百叶片,形成一个发电整体,并在同一端引出正负极端子,避免使用延长导线,降低材料及安装成本更低延长光伏百叶帘的使用寿命；所述光伏百叶片的排布连接方法采用背面连接的方式,制成的光伏百叶帘两侧接线清晰简易,且背面空间充足,没有其他装置和结构的干扰,大大降低了升降故障和安全隐患,也方便对故障进行排查检修。(The invention provides a method for arranging and connecting photovoltaic louver blades, wherein internal leads are arranged in the louver blades and are arranged according to the positive and negative poles of the louver blades to connect the adjacent louver blades to form a power generation whole, and positive and negative pole terminals are led out from the same end, so that the use of extension leads is avoided, the material and installation costs are reduced, and the service life of a photovoltaic louver curtain is prolonged; the photovoltaic louver blades are arranged and connected in a back connection mode, wiring on two sides of the manufactured photovoltaic louver is clear and simple, back space is sufficient, interference of other devices and structures is avoided, lifting faults and potential safety hazards are greatly reduced, and troubleshooting and maintenance of the faults are also facilitated.)

1. A method for arranging and connecting photovoltaic louver blades is characterized by comprising the following steps:

(A) selecting copper strips with corresponding specifications as inner leads according to current parameters of the photovoltaic blind;

(B) determining the number N of required photovoltaic louver blades according to the design requirements of the photovoltaic louver curtain, wherein N-1 photovoltaic louver blades are provided with internal leads, and 1 photovoltaic louver blade is not provided with the internal leads;

(C) arranging an inner lead at one side of the battery string, then laminating and packaging the battery string and the inner lead, and leading out two ends of the inner lead from the back of the photovoltaic louver blade, wherein the two ends of the inner lead are respectively the positive and negative electrodes of the inner lead, and the positive and negative electrodes of the inner lead are respectively positioned at the same side with the positive and negative electrodes of the photovoltaic louver blade;

(D) junction boxes are respectively arranged at the positive and negative positions of the back of the photovoltaic louver blade and at the two ends of the inner lead, and each junction box is provided with an outer lead;

(E) the N photovoltaic louver blades are sequentially arranged in parallel from top to bottom, the bottom end of each photovoltaic louver blade is provided with no internal lead, and the positive and negative directions of the adjacent photovoltaic louver blades are opposite;

(F) leading out external leads at the positive electrode and the negative electrode of the internal lead of the topmost photovoltaic louver blade to be used as the positive electrode and the negative electrode of the whole photovoltaic louver, sequentially connecting the negative electrode of the topmost photovoltaic louver blade with the positive electrode of the photovoltaic louver below the topmost photovoltaic louver blade through the external leads, connecting the positive electrode of the lead in the photovoltaic louver above the topmost photovoltaic louver blade with the negative electrode of the lead in the photovoltaic louver below the topmost photovoltaic louver blade through the external leads, and connecting the positive electrode and the negative electrode led out by the N-1 th blade with the positive electrode and the negative electrode of the Nth blade through the external leads respectively.

2. The arrangement and connection method of photovoltaic louvers according to claim 1, wherein said step (a) is carried out by plating the inner conductor with tin-lead copper tape.

3. The method of claim 1, wherein the inner conductor is electrically and safely spaced from the string of cells in step (C) while the inner conductor is electrically and safely spaced from the edge of the photovoltaic slat.

4. The method for arranging and connecting photovoltaic louver blades according to claim 3, wherein the inner wires and the cell strings are arranged in parallel in step (C), and the inner wires and the cell strings are spaced apart from each other, and the inner wires and the long sides of the photovoltaic louver blades are spaced apart from each other by a distance not less than the electrical safety distance.

5. The arrangement connecting method for photovoltaic slats according to claim 1, wherein the length of the inner conductor in step (C) is at least 4mm shorter than the length of the long side of the photovoltaic slat.

6. The arrangement and connection method of the photovoltaic louver blades as claimed in claim 1, wherein in the step (C), the photovoltaic louver blades have their own positive and negative poles on the back, and junction boxes are respectively installed at the positive and negative poles 2 and have external wires respectively.

7. The method for arranging and connecting photovoltaic louver blades according to claim 6, wherein in the step (C), openings are formed on the back surface of the photovoltaic louver blade corresponding to the two ends of the inner wires, the two ends of the inner wires are led out from the two openings respectively, junction boxes are mounted at the two ends of the inner wires respectively, the junction boxes are provided with outer wires respectively, and the two openings are sealed.

8. The method for arranging and connecting photovoltaic louver blades according to claim 1, wherein in the step (C), the cell strings and the inner wires are respectively provided with an inner adhesive film on the upper surface and the lower surface, and the two layers of inner adhesive films are respectively provided with a front plate and a rear plate thereon and then laminated.

Technical Field

The invention relates to the technical field of photovoltaic building correlation, in particular to a method for arranging and connecting photovoltaic louver blades.

Background

Under the great trend of energy conservation and emission reduction, for the building industry of carbon emission 'big households', the footfall of low carbon and emission reduction lies in green buildings, and the photovoltaic blind curtain is one of solutions of the green buildings. The photovoltaic blind curtain is formed by arranging photovoltaic blind blades, and solar cells are arranged on the photovoltaic blind blades. Photovoltaic blinds have the dual function of sun shading and photovoltaic power generation, and have been used in more and more building engineering at present. The photovoltaic blind is characterized in that the photovoltaic blind is a hollow glass photovoltaic blind, the size of a louver blade of the photovoltaic blind is generally small and is arranged between two layers of glass, the photovoltaic blind is a building external sunshade blind, the size of the louver blade of the photovoltaic blind is relatively flexible, the photovoltaic blind is a product for installing the movable external sunshade blind outside a glass window chamber, and the photovoltaic blind and the building external sunshade blind have the advantages of energy conservation, sunshade, heat insulation, dimming and the like, and are widely applied to green buildings.

No matter be cavity glass photovoltaic blind or construct outer sunshade photovoltaic blind, all need arrange the connection to the photovoltaic shutter plate. A plurality of photovoltaic louver blades arranged in parallel are connected into a whole through a wire to generate electricity, and the whole photovoltaic louver blades are provided with only 1 positive terminal and 1 negative terminal and are connected with an energy storage system or an inversion system at the rear end through two terminals. Since the blind has two forms of unfolding and folding, the wire outlet positions of the two terminals need to be arranged at the left and right sides of the top of the blind. In addition, because the louver blades need to be connected in series to meet the requirement of rear-end electrical parameters, 1 terminal can appear at the top of the louver, and the other terminal appears at the bottom of the louver. In order to connect the terminal at the bottom of the blind to the terminal at the top, it is common to thread a terminal of a bottom wire through the position of the blind lifting cord to the top of the blind by extending the length of the wire, or through the guide rail frame at the side of the blind to the top of the blind. In order to prevent the extension wires from curling or affecting the appearance when the blind is unfolded or closed, a special take-up and pay-off device needs to be provided for the extension wires.

No matter which of the above is adopted, the arrangement path of the extension lead needs to solve the problem of paying off or taking up when the shutter is unfolded or folded through a special device. The special device additionally increases the design and manufacturing cost of the blind, increases the volume of the blind and is not beneficial to installation; the friction between the lead and other structures is easily generated in the process of winding and unwinding the lead, the service life of the lead is greatly reduced, and meanwhile, the potential safety hazard caused by the damage of the lead is increased; when the photovoltaic blind curtain is unfolded or folded, the extension lead is easy to interfere with the lifting rope or the guide rail, so that the probability of generating faults is increased; for the sunshade photovoltaic blind outside the building, no matter how the path of the extension wires is arranged, the wires are completely exposed in outdoor air and are damaged and corroded by various factors such as long-term sun exposure, wind blowing, rain, snow and the like, so that the damage of the wires is aggravated, and the maintenance cost is increased. In summary, there is a need in the art for improved attachment of photovoltaic slats.

Disclosure of Invention

In view of the above, the present invention provides a method for connecting photovoltaic louvers, in which internal wires are disposed in the louvers, and the internal wires are arranged according to the positive and negative poles of the louvers, so as to connect adjacent louvers to form a power generation whole, and positive and negative terminals are led out from the same end.

In order to achieve the above purpose, the present invention provides a method for arranging and connecting photovoltaic louver blades, comprising the steps of:

(A) selecting copper strips with corresponding specifications as inner leads according to current parameters of the photovoltaic blind;

(B) determining the number N of required photovoltaic louver blades according to the design requirements of the photovoltaic louver curtain, wherein N-1 photovoltaic louver blades are provided with internal leads, and 1 photovoltaic louver blade is not provided with the internal leads;

(C) arranging an inner lead at one side of the battery string, then laminating and packaging the battery string and the inner lead, and leading out two ends of the inner lead from the back of the photovoltaic louver blade, wherein the two ends of the inner lead are respectively the positive and negative electrodes of the inner lead, and the positive and negative electrodes of the inner lead are respectively positioned at the same side with the positive and negative electrodes of the photovoltaic louver blade;

(D) junction boxes are respectively arranged at the positive and negative positions of the back of the photovoltaic louver blade and at the two ends of the inner lead, and each junction box is provided with an outer lead;

(E) the N photovoltaic louver blades are sequentially arranged in parallel from top to bottom, the bottom end of each photovoltaic louver blade is provided with no internal lead, and the positive and negative directions of the adjacent photovoltaic louver blades are opposite;

(F) leading out external leads at the positive electrode and the negative electrode of the internal lead of the topmost photovoltaic louver blade to be used as the positive electrode and the negative electrode of the whole photovoltaic louver, sequentially connecting the negative electrode of the topmost photovoltaic louver blade with the positive electrode of the photovoltaic louver below the topmost photovoltaic louver blade through the external leads, connecting the positive electrode of the lead in the photovoltaic louver above the topmost photovoltaic louver blade with the negative electrode of the lead in the photovoltaic louver below the topmost photovoltaic louver blade through the external leads, and connecting the positive electrode and the negative electrode led out by the N-1 th blade with the positive electrode and the negative electrode of the Nth blade through the external leads respectively.

Preferably, the inner conductor of step (a) is a tin-lead plated copper strip.

Preferably, the inner lead in step (C) is kept at a safe electrical distance from the battery string, while the inner lead is kept at an electrical safe distance from the edge of the photovoltaic louver.

Preferably, in the step (C), the inner lead and the battery string are arranged in parallel, a gap is formed between the inner lead and the battery string, a gap is formed between the inner lead and the long side of the photovoltaic louver, and the gap distance is not less than the electrical safety distance.

Preferably, the length of the inner lead in the step (C) is at least 4mm shorter than the length of the long side of the photovoltaic louver.

Preferably, in the step (C), the back surface of the photovoltaic louver blade is provided with a positive pole and a negative pole thereof, the positive pole and the negative pole 2 are respectively provided with a junction box, and the junction boxes are respectively provided with an external lead.

Preferably, openings are formed in the positions, corresponding to the two ends of the inner lead, of the back surface of the photovoltaic louver blade in the step (C), the two ends of the inner lead are respectively led out from the two openings, junction boxes are respectively installed at the two ends of the inner lead, the junction boxes are respectively provided with outer leads, and the two openings are sealed.

Preferably, in the step (C), the upper surface and the lower surface of the battery string and the inner lead are respectively provided with an inner adhesive film, and the upper surfaces of the two inner adhesive films are respectively provided with a front plate and a rear plate, and then lamination is performed.

Compared with the prior art, the photovoltaic louver blade arranging and connecting method disclosed by the invention has the advantages that: by adopting the arrangement and connection method of the photovoltaic louver blades, a winding and unwinding device for extending the conducting wires can be omitted, and the material and installation cost is lower; the photovoltaic louver blade arrangement and connection method is simpler to operate; the photovoltaic blind curtain supported by the arrangement and connection method of the photovoltaic blind blades can effectively protect the connecting wires in the blind blades, so that the connecting wires are prevented from being impacted by ultraviolet rays and external force, and from being corroded by rain and snow; the photovoltaic louver blades are arranged and connected in a back connection mode, wiring on two sides of the manufactured photovoltaic louver is clear and simple, back space is sufficient, interference of other devices and structures is avoided, lifting faults and potential safety hazards are greatly reduced, and troubleshooting and maintenance of the faults are also facilitated.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a flow chart of a method for arranging and connecting photovoltaic slats according to the present invention.

Fig. 2 is a schematic front view of a photovoltaic louver used in the method for arranging and connecting photovoltaic louvers according to the present invention.

Fig. 3 is a schematic back view of a photovoltaic louver used in the method for arranging and connecting photovoltaic louvers according to the present invention.

Fig. 4 is a schematic view illustrating a method for arranging and connecting photovoltaic slats according to the present invention to perform lamination packaging on a cell string of the photovoltaic slats.

Fig. 5 is a schematic diagram illustrating the arrangement and connection of 10 photovoltaic slats according to the arrangement and connection method of photovoltaic slats.

Fig. 6 is a schematic diagram illustrating the arrangement and connection of 9 photovoltaic slats according to the arrangement and connection method of photovoltaic slats.

Fig. 7 is a schematic view of the back of a photovoltaic blind curtain manufactured by the method for arranging and connecting photovoltaic slats according to the present invention.

Fig. 8 is a schematic front view of a photovoltaic blind curtain manufactured by the method for arranging and connecting photovoltaic slats according to the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1, the method for arranging and connecting photovoltaic louver blades of the present application includes the steps of:

(A) selecting copper strips with corresponding specifications as inner leads according to current parameters of the photovoltaic blind;

(B) determining the number N of required photovoltaic louver blades according to the design requirements of the photovoltaic louver curtain, wherein N-1 photovoltaic louver blades are provided with internal leads, and 1 photovoltaic louver blade is not provided with the internal leads;

(C) arranging an inner lead at one side of the battery string and keeping a safe electrical distance with the battery string, meanwhile keeping an electrical safe distance between the inner lead and the edge of the photovoltaic louver blade, then laminating and packaging the battery string and the inner lead, and leading out two ends of the inner lead from the back of the photovoltaic louver blade, wherein two ends of the inner lead are respectively the positive electrode and the negative electrode of the inner lead, and the positive electrode and the negative electrode of the inner lead are respectively positioned at the same side with the positive electrode and the negative electrode of the photovoltaic louver blade;

(D) junction boxes are respectively arranged at the positive and negative positions of the back of the photovoltaic louver blade and at the two ends of the inner lead, and each junction box is provided with an outer lead;

(E) the N photovoltaic louver blades are sequentially arranged in parallel from top to bottom, the bottom end of each photovoltaic louver blade is provided with no internal lead, and the positive and negative directions of the adjacent photovoltaic louver blades are opposite;

(F) leading out external leads at the positive electrode and the negative electrode of the internal lead of the topmost photovoltaic louver blade to be used as the positive electrode and the negative electrode of the whole photovoltaic louver, connecting the negative electrode of the topmost photovoltaic louver blade with the positive electrode of the photovoltaic louver blade below the topmost photovoltaic louver blade through the external leads, connecting the positive electrode of the lead in the topmost photovoltaic louver blade with the negative electrode of the lead in the photovoltaic louver blade below the topmost photovoltaic louver blade through the external leads, and sequentially connecting the photovoltaic louver blades below the topmost photovoltaic louver blade according to the same connection mode until the positive electrode and the negative electrode led out by the N-1 th blade are respectively connected with the positive electrode and the negative electrode of the N-th blade through the external leads.

In the step (a), the inner lead may be a tin-lead plated copper strip commonly used for photovoltaic modules, i.e. a photovoltaic solder strip, and the specification is 1 × 0.23mm, 6 × 0.35mm, 8 × 0.4mm, etc. The inner lead adopts a photovoltaic solder strip, and compared with a lead exposed in the air, the material cost can be obviously reduced. The length of outer wire is not less than the distance between the photovoltaic shutter plate when the photovoltaic shutter plate is unfolded completely, can not influence the operation of receiving and releasing of photovoltaic shutter plate.

Specifically, referring to fig. 2 and 3, for the photovoltaic louver after lamination and encapsulation in step (C), the inner lead 5 and the battery string 6 are arranged in parallel, and a gap is provided between the inner lead 5 and the battery string 6, and a gap is provided between the inner lead 5 and the long side of the photovoltaic louver, and the gap distance is not less than the electrical safety distance. The back of the photovoltaic louver blade is provided with a positive pole 61 and a negative pole 62, the positive pole 61 and the negative pole 62 are respectively provided with a junction box, and the junction boxes are respectively provided with external leads 611 and 612. The inner conductor 5 is completely wrapped inside the photovoltaic louver. Preferably, the length of the inner lead 5 is at least 4mm shorter than the length of the long side of the photovoltaic louver. Openings are formed in the back of the photovoltaic louver blade and correspond to the two ends of the inner lead 5, the two ends of the inner lead 5 are led out from the two openings respectively, junction boxes are installed at the two ends of the inner lead 5 respectively, the junction boxes are provided with outer leads 511 and 521 respectively, and the two openings are sealed.

Referring to fig. 4, which is a schematic view of laminating and packaging the battery string 6 and the inner lead 5 in the step (C), the upper and lower surfaces of the battery string 6 and the inner lead 5 are respectively provided with inner glue films 2 and 3, a front plate 1 is arranged on the inner glue film 2, and a rear plate 4 is arranged below the inner glue film 3, and then the lamination is performed to form the photovoltaic louver. The rear plate 4 has two openings therein. Because the inner lead 5 and the battery string 6 are packaged and protected, the inner lead 5 can be prevented from being damaged by ultraviolet irradiation, external force impact, rain and snow corrosion and the like, the service life of the inner lead 5 can be effectively prolonged, and the service life of the photovoltaic blind can be further effectively prolonged.

Referring to fig. 5, a schematic diagram of arrangement and connection of 10 photovoltaic slats is shown, which is applicable to the case of even photovoltaic slats. The positive pole of the topmost photovoltaic louver blade is 1-A, the negative pole is 1-B, the positive pole of the inner lead is 1-C, the negative pole of the inner lead is 1-D, and the photovoltaic louver blades arranged downwards are sequentially sequenced. The positive electrode 1-A is led out through an outer lead to serve as a positive electrode of the whole photovoltaic blind curtain, and the negative electrode 1-D of the inner lead is led out through the outer lead to serve as a negative electrode of the whole photovoltaic blind curtain. The negative electrode 1-B is connected with the positive electrode 2-A of the lower photovoltaic louver blade as a power generator through an external lead, and the positive electrode 1-C of the internal lead is connected with the negative electrode 2-D of the internal lead of the lower photovoltaic louver blade as a lead passage through the external lead. In turn, 2-B is connected to 3-A as a power generator and 2-C is connected to 3-D as a conductor path. The first 9 photovoltaic louver blades are sequentially connected according to the same rule, the positive electrode 9-C of the inner lead of the 9 th photovoltaic louver blade is connected with the negative electrode 10-B of the 10 th photovoltaic louver blade as a lead passage through an outer lead, and the negative electrode 9-B of the 9 th photovoltaic louver blade is connected with the positive electrode 10-A of the 10 th photovoltaic louver blade as a power generator through an outer lead.

Referring to fig. 6, the schematic diagram of arranging and connecting 9 photovoltaic slats is applicable to the situation of odd photovoltaic slats. The difference with the even number of the photovoltaic louver blades is that the negative electrode 8-B of the 8 th photovoltaic louver blade is connected with the positive electrode 9A of the 9 th photovoltaic louver blade through an external lead, and the positive electrode 8-C of the internal lead of the 8 th photovoltaic louver blade is connected with the negative electrode 9B of the 9 th photovoltaic louver blade through an external lead.

Therefore, the arranging and connecting method of the photovoltaic louver blades can be suitable for arranging and connecting any number of photovoltaic louver blades, the extension wires are not needed, and a device for extending and retracting the extension wires can be omitted. The photovoltaic louver blades are connected at the back, and the wiring operation is simple and fast.

Referring to fig. 7 and 8, in order to manufacture the photovoltaic blind curtain by using the method for arranging and connecting the photovoltaic blind blades, the front surface of the photovoltaic blind curtain is not provided with exposed wires or terminals, so that the external wires and terminals can be protected, and the service life can be prolonged. In addition, the back space of photovoltaic blind is sufficient, does not have the interference of other devices and structures, makes things convenient for the wiring operation, helps reducing lift trouble and potential safety hazard, also conveniently examines and repair the trouble.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.