Photovoltaic louver curtain wall units and curtain walls

Abstract

The present invention discloses a photovoltaic louver curtain wall unit and a curtain wall, including an inner cavity of the curtain wall unit encapsulated by double-layer glass and a frame, wherein a driving device, photovoltaic louver blades and a series circuit are installed in the inner cavity of the curtain wall unit, wherein the driving device is used to drive the photovoltaic louver blades to achieve deflection and extension, and the photovoltaic louver blades include solar cells, and the series circuit is a loop formed by connecting all the photovoltaic louver blades in series by multiple sections of wires, and the frame includes an upper frame, a lower frame and two side frames, and a vertical rod is provided between each side frame and the photovoltaic louver blades, and the wire between each two photovoltaic louver blades bypasses the vertical rod closest to the wire section to prevent the wire from moving between the two photovoltaic louver blades. The photovoltaic louver curtain wall unit of the present invention significantly reduces the heat generated by the photovoltaic louver blades during power generation from the root, and at the same time, realizes the barrier-free movement of the photovoltaic louver blades. The curtain wall of the present invention also has the above advantages.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic building integration, and in particular to a photovoltaic louver curtain wall unit and a curtain wall. Background Art

[0002] Photovoltaic blinds are a type of photovoltaic building integration (BIPV) technology and are photovoltaic building materials that can become part of a building. At present, they are mostly used in the form of photovoltaic blinds. Conventional photovoltaic blinds are designed to enhance the heat dissipation function of photovoltaic blinds. Most of them are designed with photovoltaic blades exposed to the air or in the form of photovoltaic blinds. Blinds cannot become part of a building and can only be placed indoors. The heat generated by their power generation will be fed back into the room, which will increase indoor energy consumption and go against the concept of energy conservation and environmental protection. Although photovoltaic blinds exposed to the air become part of a building, their structure causes the air inside and outside to flow, which basically cannot achieve indoor heat dissipation and insulation functions. This will aggravate the indoor "hot in summer and cold in winter" situation and greatly increase indoor energy consumption. The increasingly popular photovoltaic blinds also have their shortcomings, mainly including: (1) Traditional photovoltaic blinds generate a lot of heat while absorbing sunlight to generate electricity. The closed inner cavity of the photovoltaic blinds is not easy to dissipate heat, which can easily cause the inner cavity temperature of the photovoltaic blinds to be too high, resulting in a decrease in the power generation efficiency of the photovoltaic blinds. It also affects indoor heat insulation and heat dissipation. (2) Traditional photovoltaic blinds primarily cover photovoltaic cells with aluminum alloy or other material blinds, using these materials as linings. The deflection and expansion of the photovoltaic cells are then controlled by the aluminum alloy or other material blinds. Photovoltaic cells generate heat during power generation, and prolonged bonding with aluminum alloy or other materials makes it difficult to dissipate heat, which reduces the efficiency and lifespan of the photovoltaic cells. (3) Photovoltaic blinds generate electricity by connecting the individual blades to form an electrical circuit to collect the electricity generated by each photovoltaic blade. The connecting wires between the photovoltaic blades significantly affect the movement of the photovoltaic blades. The wires are less flexible than ropes, and traditional photovoltaic blinds are lightweight.

[0003] Researchers have proposed improvements to address the above-mentioned shortcomings. For example, Chinese invention patent 201910381393.8 discloses a building photovoltaic blind, comprising a top groove, a drive device, a transmission shaft, at least two rope winders, a photovoltaic controller, multiple photovoltaic blinds, a pull rope, a ladder rope, two guide rails, and a bottom beam. The guide rails are provided with grooves, and the photovoltaic blinds include solar cells. The building photovoltaic blind also includes a guide conductive structure and a movable conductive structure. The guide conductive structure includes an insulating guide component, a threading hole, a wire, and a conductive member. One end of the insulating guide component is fixedly connected to the photovoltaic blind and the other end is fixedly connected to the conductive member. The movable conductive structure includes at least two springs and a movable conductive plate. One end of the spring is fixed to the bottom of the groove of the guide rail, and the other end is fixed to the movable conductive plate. The photovoltaic controller is electrically connected to the movable conductive plates in the guide rails on both sides of the photovoltaic blind. This invention mainly focuses on the design of the circuit connection of the photovoltaic blind blades. By arranging the conductive plates in the grooves of the guide rails and designing the movable conductive structures at both ends of the blind blades, the two contact to achieve circuit connection. Because the moving conductive structure at one end of each louver simultaneously contacts the conductive plate, the louvers are connected in parallel. Due to the characteristics of photovoltaic cells, this parallel circuit causes the currents of each louver to overlap, resulting in a "high current, low voltage" situation. This causes a very high current to flow through each louver, resulting in a large amount of heat generated during the power generation process. This seriously affects the louver's own power generation efficiency and increases the energy consumption of the louver and indoor heat dissipation. Chinese invention patent 201811575444.2 discloses a multifunctional photovoltaic blind window, comprising a triple-glazed window, an upper ventilation structure, and a lower ventilation structure. The triple-glazed window includes a first cavity and a photovoltaic blind system. The photovoltaic blind system includes a plurality of first photovoltaic blinds, a plurality of second photovoltaic blinds, a pull cord, a first ladder cord, a second ladder cord, a first rope reel, and a second rope reel. The first and second photovoltaic blinds are alternately arranged at equal intervals, the upper end of the first ladder cord being secured to the first rope reel in a first preset winding direction, and the upper end of the second ladder cord being secured to the second rope reel in a second preset winding direction. The multifunctional photovoltaic blind window also includes a water distributor, a water pump, a first water pipe, and a water collection tank. While this invention can improve the shielding and power generation efficiency of the photovoltaic blind system to a certain extent, reduce indoor summer air conditioning electricity consumption, and increase indoor air humidity, it also has significant drawbacks. The design adopts a dual-cavity structure, and the upper and lower ventilation structures are connected to the outer cavity. The wind and water cooling mainly act in the outer cavity. Since the upper and lower ventilation structures are directly connected to the outer cavity, the wind and water directly contact the photovoltaic louver, which is very unfavorable for the long-term operation of the photovoltaic louver blades. Since water and air directly contact the photovoltaic louver blades, this will affect the weather resistance of the photovoltaic louver blade wire joints. The interface is easily corroded by water, resulting in a short circuit. In severe cases, it will cause the photovoltaic louver blades to spontaneously combust.In addition, the invention uses electrical appliances such as water pumps and fans to cool the photovoltaic louver blades, which deviates from the main purpose of reducing energy consumption of building materials. Instead, it greatly increases energy consumption and is very unfavorable to achieving the practical requirements of the invention technology.

[0004] Photovoltaic louvers are connected in series by connecting a wire at the ends of two louvers and then connecting all of them in series in a front-to-back fashion. Because each wire is an independent element, and louvers are lightweight and have poor flexibility, the wires can easily get stuck between the louvers when connected in series. In particular, the wires exert a counteracting force on the louvers, which can easily squeeze the wires when the louvers contract or deflect, even preventing them from contracting or deflecting, affecting their movement and, in severe cases, causing them to bend or break. Therefore, conventional photovoltaic louver curtain wall circuits often use parallel connections. However, parallel circuits act as shunts, easily resulting in a "high current, low voltage" situation. Heat increases with current, and parallel circuits can significantly increase the heat within the louver curtain wall, significantly raising the internal temperature and affecting the louver's power generation efficiency and heat dissipation. The aforementioned improvements do not effectively address the problems of the prior art. Alternatively, they can only address a single drawback of the prior art, or they introduce new problems while addressing a single drawback. Therefore, the research purpose of the present invention is to solve the above-mentioned multiple technical problems at the same time without neglecting one while neglecting the other. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the shortcomings of the existing technology and provide a photovoltaic louver curtain wall unit and curtain wall that can not only meet the heat dissipation effect of photovoltaic cells, but also ensure that the wire connection electrical circuit between the photovoltaic louver blades does not affect the overall movement of the photovoltaic louver blades.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] A photovoltaic louver curtain wall unit comprises an inner cavity of the curtain wall unit encapsulated by double-layer glass and a frame, wherein a driving device, a plurality of photovoltaic louver blades and a series circuit are installed in the inner cavity of the curtain wall unit, wherein the driving device is used to drive the photovoltaic louver blades to achieve deflection and extension, the photovoltaic louver blades contain solar cells, and the series circuit is a loop formed by connecting all the photovoltaic louver blades in series by multiple sections of wires, the frame comprises an upper frame, a lower frame and two side frames, and a vertical rod is respectively provided between each of the side frames and the photovoltaic louver blades, and the wire between each two photovoltaic louver blades bypasses the vertical rod closest to the wire section to prevent the wire from moving between the two photovoltaic louver blades.

[0008] As a further improvement of the above technical solution, a plurality of heat dissipation pipes communicating with the outside are provided in the inner cavity of the curtain wall unit, and the heat dissipation pipes are not connected to the inner cavity of the curtain wall unit.

[0009] As a further improvement of the above technical solution, the heat dissipation pipe is the vertical rod, the two ends of which are bent toward the side frame respectively, and fixed to the upper and lower parts of the side frame to form an upper heat dissipation port and a lower heat dissipation port connected to the outside world.

[0010] As a further improvement of the above technical solution, the vertical rod is a metal tube with a smooth outer surface.

[0011] As a further improvement of the above technical solution, a groove is provided in the upper frame, and the driving device is installed in the groove.

[0012] As a further improvement of the above technical solution, the driving device includes a deflection drive motor and a transmission shaft. The deflection drive motor is connected to the transmission shaft through a transmission gear chain. The transmission shaft is connected to the photovoltaic louver blades through at least two deflection ladder ropes. The transmission shaft adjusts the deflection angle of the photovoltaic louver blades by pulling the deflection ladder ropes.

[0013] As a further improvement of the above technical solution, the driving device includes a telescopic driving motor, a fixed pulley and a transmission shaft. The telescopic driving motor, the fixed pulley and the transmission shaft are connected to the photovoltaic louver blades in sequence through a telescopic lifting rope. The fixed pulley is used to change the direction of the telescopic lifting rope. The telescopic driving motor adjusts the photovoltaic louver blades to move upward or downward by contracting or releasing the telescopic lifting rope.

[0014] As a general inventive concept, the present invention also discloses a curtain wall having the above-mentioned photovoltaic louver curtain wall unit.

[0015] The above-mentioned curtain wall is preferably composed of a plurality of repeated photovoltaic louver curtain wall units.

[0016] The above-mentioned curtain wall is preferably composed of a single photovoltaic louver curtain wall unit and corresponding reinforcing support members, and the size of the photovoltaic louver curtain wall unit is customized according to the size of the curtain wall.

[0017] The main innovations of the present invention are:

[0018] This invention designs a photovoltaic louver curtain wall unit that has the functions of a traditional Venetian blind, including controlling indoor and outdoor light intensity through the deflection and extension of the photovoltaic louver blades. It also has the power generation function of a photovoltaic module and can be used as a building material to form a part of the building. The main problems addressed by this invention are: (1) the influence of the wires connected in series on the movement of the photovoltaic louvers; and (2) the design of a solution for non-contact internal heat dissipation of the photovoltaic louver curtain wall.

[0019] (1) The present invention first studies the heat dissipation scheme of the inner cavity of photovoltaic louver curtain wall. After studying the design characteristics of traditional photovoltaic louvers, it is found that the photovoltaic louvers in traditional photovoltaic louvers are basically connected in parallel. On the one hand, the connection method is simple, and on the other hand, parallel connection generally does not require wire connection. Sliding rod connection is often used to avoid the internal wire affecting the movement of the photovoltaic louver blades. However, due to the characteristics of photovoltaic cells, the parallel connection method will cause the current passing through each photovoltaic louver blade to be superimposed, resulting in a "large current and small voltage" form. The heat generation is proportional to the current. The parallel circuit causes the photovoltaic louver blades to generate a large amount of heat energy, which increases the heat dissipation burden of the inner cavity. In order to solve the heat dissipation problem from the root, the patent of the present invention adopts a series connection method to connect the photovoltaic louver blades, and designs a solution in which the wires and the photovoltaic louver blades do not contact each other to avoid the disadvantages of the series connection.

[0020] (2) To solve the problem of the influence of the wires in the series circuit on the movement of the photovoltaic louver blades and to further improve the heat dissipation effect inside the photovoltaic louver curtain wall, the present invention further designs a unique inner cavity heat dissipation component, which is composed of upper and lower heat dissipation ports and heat dissipation pipes. The main heat dissipation principle is to increase the heat dissipation surface of the inner cavity by arranging heat dissipation pipes in the inner cavity of the louver curtain wall unit. More importantly, the heat dissipation pipes are not connected to the inner cavity of the curtain wall unit, realizing a non-contact inner cavity heat dissipation function, ensuring that the inner cavity of the curtain wall unit is in a hollow or vacuum state, so that the inner cavity is isolated from external water vapor and dust, which is conducive to extending the service life of each functional component in the inner cavity of the curtain wall unit.

[0021] Compared with the prior art, the advantages of the present invention are:

[0022] (1) The photovoltaic louver curtain wall unit of the present invention solves the problem that the wires in the circuit after the photovoltaic louvers are connected in series will affect the movement of the louvers, avoiding the phenomenon of "high current and low voltage" in the circuit caused by the parallel connection of photovoltaic louvers, and significantly reduces the heat generated during the power generation process of the photovoltaic louvers from the root. At the same time, the present invention realizes the barrier-free movement of the photovoltaic louvers: the photovoltaic louvers are connected in series by a special structure of wires wrapped around vertical rods, ensuring that the movement range of the wires does not overlap with the photovoltaic louvers, and the movement of the wires is achieved by sliding on the vertical rods.

[0023] (2) The photovoltaic louver curtain wall unit of the present invention is further designed with an inner cavity non-contact heat dissipation component, which forms a heat dissipation channel in the inner cavity of the photovoltaic louver curtain wall unit through the heat dissipation pipe and the upper and lower heat dissipation ports. The heat dissipation fluid such as wind or water cooling flows in from the upper heat dissipation port and flows out from the lower heat dissipation port, taking away the heat from the inner wall of the heat dissipation pipe, thereby realizing heat dissipation of the inner cavity of the photovoltaic louver curtain wall unit. In addition, the heat dissipation pipe is not connected to the inner cavity of the curtain wall unit, so that the inner cavity is isolated from external water vapor and dust, which is beneficial to extending the service life of each functional component in the inner cavity of the curtain wall unit. According to common sense, the effect of non-contact heat dissipation is not as good as contact heat dissipation. The present invention starts from the source of heat generation and greatly reduces the heat generation from the source by connecting photovoltaic blinds in series. Combined with non-contact heat dissipation components, the heat dissipation requirements of the photovoltaic curtain wall can be met. This not only has the advantages of non-contact heat dissipation, but also improves the weather resistance of photovoltaic blinds and related components, and can separate the indoor and outdoor areas. The heat generated by the photovoltaic blinds will not be introduced into the room, nor will the indoor cooling air in summer escape to the outside. It overcomes the problem that traditional photovoltaic curtain walls cannot achieve indoor heat dissipation and heat insulation functions, aggravate the indoor "hot in summer and cold in winter", and greatly increase indoor energy consumption.

[0024] (3) The curtain wall of the present invention also has the above advantages because it has the above photovoltaic louver curtain wall unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the photovoltaic louver curtain wall unit of Example 1 of the present invention.

[0026] Figure 2 Schematic diagram of the series connection of photovoltaic louver blades in the photovoltaic louver curtain wall unit of Example 1 of the present invention.

[0027] Figure 3 It is a side view of the side frame of the photovoltaic louver curtain wall unit of Example 1 of the present invention.

[0028] Figure 4 It is an enlarged schematic diagram of the photovoltaic louver blades in the photovoltaic louver curtain wall unit of Example 1 of the present invention.

[0029] Figure 5 It is a schematic diagram of the connection structure between the side frame and the heat dissipation assembly of the photovoltaic louver curtain wall unit in Example 1 of the present invention.

[0030] The numbers in the figure represent: 101, deflection drive motor; 102, telescopic drive motor; 103, transmission gear chain; 104, fixed pulley; 201, transmission shaft; 202, deflection ladder rope; 203, telescopic lifting rope; 204, first wire box; 205, second wire box; 301, photovoltaic louver blades; 401, frame; 501, glass; 601, lower heat dissipation outlet; 602, vertical rod; 603, upper heat dissipation outlet; 701, wire. DETAILED DESCRIPTION

[0031] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] Example 1:

[0033] Figures 1 to 5 An embodiment of the photovoltaic louver curtain wall unit of the present invention is shown. The photovoltaic louver curtain wall unit of this embodiment includes a curtain wall unit cavity encapsulated by double-layer glass 501 and a frame 401. A driving device, multiple photovoltaic louver blades 301 and a series circuit are installed in the curtain wall unit cavity. The driving device is used to drive the photovoltaic louver blades 301 to achieve deflection and extension. Each photovoltaic louver blade 301 includes a solar cell. The series circuit is a loop formed by connecting all the photovoltaic louver blades 301 in series by multiple sections of wires 701. The loop is used to collect the electric energy generated by each photovoltaic louver blade 301 and transmit it to an external power storage device or power-consuming device. The frame 401 includes an upper frame, a lower frame and two side frames. A vertical rod 602 is provided between each side frame and the photovoltaic louver blade 301. The wire 701 between each two photovoltaic louver blades 301 bypasses the vertical rod 602 closest to the wire 701 to prevent the wire 701 from moving between the two photovoltaic louver blades 301.

[0034] The photovoltaic louver curtain wall unit of this embodiment significantly reduces the heat generated by the photovoltaic louver blades 301 in power generation from the root by connecting the photovoltaic louver blades 301 in series. At the same time, by bypassing the series wire 701 around the vertical rod 602 close to the side frame, the movement range of the wire 701 is limited to prevent the wire 701 from moving between two photovoltaic louver blades 301 when the photovoltaic louver blades 301 move, causing the photovoltaic louver blades 301 to squeeze the wire 701 and receive a reverse force, making the photovoltaic louver blades 301 unable to contract or the reverse force is too large, causing the photovoltaic louver blades 301 to bend or break.

[0035] Furthermore, in this embodiment, a plurality of heat dissipation pipes are provided within the inner cavity of the curtain wall unit, which are connected to the outside world. These heat dissipation pipes are not electrically connected to the inner cavity of the curtain wall unit. This allows external cooling fluid, such as natural cool air or rainwater, to flow through the heat dissipation pipes to dissipate heat from the inner cavity of the curtain wall unit. Since the heat dissipation pipes are not electrically connected to the inner cavity of the louver curtain wall unit, the cooling fluid, dust, and the like are prevented from coming into contact with the various functional components within the inner cavity. This helps extend the overall service life of the louver curtain wall unit and reduces maintenance and replacement costs. Conventional non-contact heat dissipation is generally less effective than contact heat dissipation. However, the present invention addresses the root cause of heat generation by significantly reducing heat generation through the serial connection of photovoltaic louvers. Combined with non-contact heat dissipation components, this method achieves the heat dissipation requirements of the photovoltaic curtain wall. This approach combines the advantages of non-contact heat dissipation, improving the weather resistance of the photovoltaic louvers and related components, while also providing a separation between the indoor and outdoor areas. This prevents heat generated by the photovoltaic louvers from being introduced into the interior, nor does it allow summer-cooled indoor air to escape to the outdoors. This overcomes the problem of traditional photovoltaic curtain walls failing to achieve indoor heat dissipation and insulation, exacerbating the "hot summer and cold winter" indoor climate and significantly increasing indoor energy consumption.

[0036] Furthermore, in this embodiment, the heat dissipation pipe is a vertical rod 602, the ends of which are bent toward the side frame and fixed to the upper and lower portions of the side frame, forming upper and lower heat dissipation vents 603 and 601, respectively, that communicate with the outside world. This design combines the heat dissipation pipe, which performs non-contact heat dissipation, with the vertical rod 602, which restricts the movement of the wire 701. This not only achieves non-contact heat dissipation within the photovoltaic louver curtain wall unit, but also solves the problem of contact between the electrical circuit wires and the blades, which affects the movement of the photovoltaic louver blades 301 when the photovoltaic louver blades 301 are connected in series and cause the blades to contract and deflect. It also simplifies the layout within the curtain wall unit cavity, improving space utilization. The space saved by the optimized structure can be used to expand the diameter of the vertical rod 602, further increasing the heat exchange area and enhancing the heat dissipation effect.

[0037] Moreover, the heat generated by the photovoltaic louver curtain wall unit is mainly generated during the power generation process of the photovoltaic louver blades 301. The closer to the blades, the higher the heat. Under the premise of not affecting the movement of the blades, arranging the heat pipes close to the photovoltaic louver blades 301 can more effectively dissipate heat.

[0038] Furthermore, in this embodiment, the vertical rod 602 is a smooth metal tube. Metal has excellent thermal conductivity, and heat is removed by using a medium such as wind or water to flow in from the upper heat dissipation port and out from the lower heat dissipation port, resulting in effective heat dissipation and low cost. A heat pipe with a smooth outer surface is designed, and the wire 701 between each pair of photovoltaic louver blades 301 is wrapped around the smooth heat pipe. The movement range of the wire 701 is fixed to ensure that the wire 701 and the photovoltaic louver do not interfere with each other during movement.

[0039] Furthermore, in this embodiment, a groove is provided in the upper frame, and the driving device is installed in the groove, which is beneficial to improving space utilization and making the overall structure more compact.

[0040] Furthermore, in this embodiment, the drive device includes a deflection drive motor 101 and a transmission shaft 201. The deflection drive motor 101 is connected to the transmission shaft 201 via a transmission gear chain 103. The transmission shaft 201 is connected to the photovoltaic louver blades 301 via two sets of deflection ladder ropes 202, each set having two deflection ladder ropes, one set located near the left end of the photovoltaic louver blades 301, and the other set located near the right end of the photovoltaic louver blades 301. The transmission shaft adjusts the deflection angle of the photovoltaic louver blades 301 by pulling the two sets of deflection ladder ropes 202. Of course, in other embodiments, only one set of deflection ladder ropes can be used, but the effect is not as good as in this embodiment.

[0041] Furthermore, in this embodiment, the drive device includes a telescopic drive motor 102, a fixed pulley 104, and a transmission shaft 201. The telescopic drive motor 102, the fixed pulley 104, and the transmission shaft 201 are sequentially connected to the photovoltaic louver blades 301 via a telescopic lifting rope 203. The fixed pulley 104 is used to change the direction of the telescopic lifting rope 203. The telescopic drive motor 102 adjusts the upward or downward movement of the photovoltaic louver blades 301 by contracting or releasing the telescopic lifting rope 203, thereby achieving the extension and retraction of the photovoltaic louver blades 301. In this embodiment, there are two telescopic lifting ropes 203. They are jointly led from the telescopic drive motor 102, changed direction by the fixed pulley 104, and then separated into two by passing through the first wiring box 204. One of the two ropes passes through the first wiring box 204 and turns downward to connect to the right end of the photovoltaic louver blade 301. The other passes through the first wiring box 204, along the transmission shaft 201, reaches the second wiring box 205, and then turns downward to connect to the left end of the photovoltaic louver blade 301. Be provided with the fixed pulley that is used to make the telescopic lifting rope turn to in the first and second wire boxes.Certainly, in other embodiments, only connect and also can realize with a rope lifting rope, but effect is not as good as present embodiment.

[0042] Of course, in other embodiments, the driving device may also adopt the manual driving components and methods in the prior art, but the convenience of use is not as good as that of this embodiment.

[0043] Example 2:

[0044] This embodiment provides a curtain wall having the photovoltaic louver curtain wall unit of embodiment 1. The curtain wall is assembled from a plurality of repeated photovoltaic louver curtain wall units.

[0045] Since the curtain wall of this embodiment has the photovoltaic louver curtain wall unit of embodiment 1, it also has the advantages of embodiment 1.

[0046] Example 3:

[0047] This embodiment provides a curtain wall having the photovoltaic louver curtain wall unit of embodiment 1. The curtain wall is assembled from a single photovoltaic louver curtain wall unit and corresponding reinforcing support members. The size of the photovoltaic louver curtain wall unit can be customized according to the actual size of the curtain wall.

[0048] Since the curtain wall of this embodiment has the photovoltaic louver curtain wall unit of embodiment 1, it also has the advantages of embodiment 1.

[0049] The above are merely preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. The technical features involved in the various embodiments of the present invention described above may be combined with each other as long as they do not conflict with each other. All technical solutions based on the principles of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, various improvements and modifications that do not depart from the principles of the present invention should be considered within the scope of protection of the present invention.

Claims

1. A photovoltaic louver curtain wall unit, characterized by: The invention comprises a curtain wall unit cavity encapsulated by double-layer glass (501) and a frame (401), wherein a driving device, a plurality of photovoltaic louver blades (301) and a series circuit are installed in the curtain wall unit cavity, wherein the driving device is used to drive the photovoltaic louver blades (301) to achieve deflection and extension, the photovoltaic louver blades (301) contain solar cells, and the series circuit is a loop formed by connecting all the photovoltaic louver blades (301) in series by multiple sections of wires (701). The frame (401) comprises an upper frame, a lower frame and two side frames, and a vertical rod (602) is respectively provided between each side frame and the photovoltaic louver blades (301). The wire (701) between each two photovoltaic louver blades (301) bypasses the vertical rod (602) closest to the wire (701) to prevent the wire (701) from moving between the two photovoltaic louver blades (301).

2. The photovoltaic louver curtain wall unit according to claim 1, characterized in that: A plurality of heat dissipation pipes communicating with the outside are provided in the inner cavity of the curtain wall unit, and the heat dissipation pipes are not in conduction with the inner cavity of the curtain wall unit.

3. The photovoltaic louver curtain wall unit according to claim 2, characterized in that: The heat dissipation pipe is the vertical rod (602), and both ends of the vertical rod (602) are bent toward the side frame and fixed to the upper and lower parts of the side frame to form an upper heat dissipation outlet (603) and a lower heat dissipation outlet (601) communicating with the outside.

4. The photovoltaic louver curtain wall unit according to claim 3, characterized in that: The vertical rod (602) is a metal tube with a smooth outer surface.

5. The photovoltaic louver curtain wall unit according to any one of claims 1 to 4, characterized in that: A groove is provided in the upper frame, and the driving device is installed in the groove.

6. The photovoltaic louver curtain wall unit according to claim 5, characterized in that: The driving device comprises a deflection driving motor (101) and a transmission shaft (201); the deflection driving motor (101) is connected to the transmission shaft (201) via a transmission gear chain (103); the transmission shaft (201) is connected to the photovoltaic louver blades (301) via at least two deflection ladder ropes (202); and the transmission shaft adjusts the deflection angle of the photovoltaic louver blades (301) by pulling the deflection ladder ropes (202).

7. The photovoltaic louver curtain wall unit according to claim 5, characterized in that: The driving device comprises a telescopic driving motor (102), a fixed pulley (104) and a transmission shaft (201); the telescopic driving motor (102), the fixed pulley (104) and the transmission shaft (201) are sequentially connected to the photovoltaic louver blades (301) via a telescopic lifting rope (203); the fixed pulley (104) is used to change the direction of the telescopic lifting rope (203); and the telescopic driving motor (102) adjusts the photovoltaic louver blades (301) to move upward or downward by contracting or releasing the telescopic lifting rope (203).

8. A curtain wall, characterized in that: The curtain wall comprises the photovoltaic louver curtain wall unit according to any one of claims 1 to 7.

9. The curtain wall according to claim 8, characterized in that: The curtain wall is composed of a plurality of repeated photovoltaic louver curtain wall units.

10. The curtain wall according to claim 8, characterized in that: The curtain wall is composed of a single photovoltaic louver curtain wall unit and corresponding reinforcing support members, and the size of the photovoltaic louver curtain wall unit is customized according to the size of the curtain wall.

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