CN219576994U - Photovoltaic system - Google Patents

Abstract

The present utility model provides a photovoltaic system comprising: one or more photovoltaic curtain walls, one or more photovoltaic power optimizers, one or more cables and fixtures; each photovoltaic power optimizer is connected with a photovoltaic curtain wall through a cable; the fixing device is used for fixing one or more photovoltaic power optimizers on the indoor wall. According to the embodiment of the utility model, one or more photovoltaic power optimizers are installed indoors through the fixing device, so that the photovoltaic curtain wall and the photovoltaic power optimizers can be installed separately, and the photovoltaic power optimizers are prevented from being installed outdoors like the photovoltaic curtain wall, thereby realizing safe and reliable installation and maintenance of the photovoltaic power optimizers.

Description

Photovoltaic system

Technical Field

The utility model relates to the field of photovoltaic systems, in particular to a photovoltaic system for a photovoltaic curtain wall.

Background

With the wide application of photovoltaic power generation technology, the use frequency of the photovoltaic curtain wall is higher and higher. Due to shading, different photovoltaic curtain wall orientations or inconsistent attenuation of different photovoltaic curtain walls, the generated energy of the photovoltaic system is reduced. One solution is to install a photovoltaic power optimizer that can achieve maximum power output and on-line monitoring of each photovoltaic curtain wall.

However, the photovoltaic power optimizer is installed at the position of the photovoltaic curtain wall at present, and the photovoltaic curtain wall is generally installed at outdoor high altitude, which is not beneficial to the installation and maintenance of the photovoltaic power optimizer.

Disclosure of Invention

The utility model provides a photovoltaic system, which can be used for installing a photovoltaic curtain wall and a photovoltaic power optimizer separately, so that the photovoltaic power optimizer can be safely and reliably installed and overhauled.

In a first aspect, there is provided a photovoltaic system comprising: one or more photovoltaic curtain walls, one or more photovoltaic power optimizers, one or more cables and a fixing device, wherein the one or more photovoltaic curtain walls are curtain walls which are installed outdoors and are used for converting solar energy into electric energy, and the one or more photovoltaic power optimizers are used for adjusting electric power output by the one or more photovoltaic curtain walls; each photovoltaic power optimizer is connected with one photovoltaic curtain wall through one cable; the fixing device is used for fixing the one or more photovoltaic power optimizers on an indoor wall.

Based on the scheme, the photovoltaic power optimizer can be installed indoors through the fixing device, and the indoor photovoltaic power optimizer is connected to the photovoltaic curtain wall through the cable, so that the photovoltaic curtain wall and the photovoltaic power optimizer are separately installed, the photovoltaic power optimizer does not need to be installed outdoors together with the photovoltaic curtain wall, and the photovoltaic power optimizer can be safely and reliably installed and overhauled. In addition, because the photovoltaic curtain wall and the photovoltaic power optimizer are separately installed, shutdown caused by different supply periods is avoided.

With reference to the first aspect, in certain implementations of the first aspect, the fixing device includes: a first cover; the first shell comprises a side wall, the first shell is fixed on an indoor wall, a first cavity is formed by the first cover, the first shell and the indoor wall, and the first cavity accommodates one or more photovoltaic power optimizers.

It should be appreciated that one or more photovoltaic power optimizers may be housed in the fixture, each connected to a corresponding photovoltaic curtain wall by a cable.

Based on the scheme, the photovoltaic power optimizer is accommodated in the cavity in the fixing device, so that the photovoltaic power optimizer can be prevented from being damaged by the outside, and the safety of the photovoltaic power optimizer is improved.

With reference to the first aspect, in certain implementations of the first aspect, the first housing further includes a bottom wall, the bottom wall being fixed to an indoor wall; one or more first through holes are formed in the first shell, and the one or more first through holes are used for enabling the one or more cables to pass through.

It should be understood that one or more photovoltaic power optimizers may be housed in the fixture, each photovoltaic power optimizer being connected to a corresponding photovoltaic curtain wall by a cable, and further, the housing of the fixture may have one or more through holes, each through hole allowing one or more cables to pass through.

Based on the scheme, the photovoltaic power optimizer is accommodated in the cavity in the fixing device, so that the photovoltaic power optimizer can be prevented from being damaged by the outside, and the safety of the photovoltaic power optimizer is improved.

With reference to the first aspect, in certain implementation manners of the first aspect, a first chute is provided on the first housing, and the first cover body may slide along the first chute.

Based on the scheme, the cavity in the fixing device can be opened through the first chute, so that the photovoltaic power optimizer is convenient to install, overhaul and move, and the flexibility and convenience of using the photovoltaic power optimizer are improved.

With reference to the first aspect, in certain implementation manners of the first aspect, a side of the first housing is connected to a side of the first cover through a first connector, and the first cover is rotatable about the first connector.

Based on the scheme, the cavity in the fixing device can be opened through the first connecting piece, so that the photovoltaic power optimizer is convenient to install, overhaul and move, and the flexibility and convenience of using the photovoltaic power optimizer are improved.

With reference to the first aspect, in certain implementation manners of the first aspect, the first casing is provided with one or more second through holes, and the one or more second through holes are used for transferring heat emitted by the one or more photovoltaic power optimizers to outside of the photovoltaic system.

In one possible implementation, the first housing has third through holes uniformly distributed on opposite sides thereof.

With reference to the first aspect, in certain implementation manners of the first aspect, the first cover body is provided with one or more third through holes, and the one or more third through holes are used for transferring heat emitted by the one or more photovoltaic power optimizers to outside of the photovoltaic system.

With reference to the first aspect, in certain implementation manners of the first aspect, one or more fourth through holes are formed in the first casing and the first cover, and the one or more fourth through holes are used for transferring heat emitted by the one or more photovoltaic power optimizers to outside of the photovoltaic system.

Based on the scheme, the heat dissipation holes are formed in the shell, so that heat dissipation of the photovoltaic power optimizer is facilitated, and the service life of the photovoltaic power optimizer is prolonged.

With reference to the first aspect, in certain implementations of the first aspect, a sealing layer is disposed between the first cover and the first housing.

By providing a sealing layer, liquid can be prevented from flowing into the cavity of the fixture, thereby preventing the photovoltaic power optimizer from being wetted and shorted.

With reference to the first aspect, in certain implementations of the first aspect, the photovoltaic system further includes a heat dissipation device for accelerating air flow to the one or more photovoltaic power optimizer surfaces.

Based on the scheme, the air flow on the surface of one or more photovoltaic power optimizers is enhanced through the heat dissipation equipment, so that the photovoltaic power optimizers can be cooled conveniently. The heat sink device may be a small fan or an air pump, for example.

With reference to the first aspect, in certain implementations of the first aspect, the one or more cables are retractable.

Based on the scheme, the photovoltaic curtain wall is connected with the photovoltaic power optimizer through the telescopic cable, so that the limitation of the cable length during the installation of the photovoltaic power optimizer can be avoided, and the flexible installation of the photovoltaic power optimizer is realized.

Drawings

Fig. 1 is a schematic structural diagram of a photovoltaic system according to an embodiment of the present utility model.

Fig. 2 is a schematic structural diagram of another photovoltaic system according to an embodiment of the present utility model.

Fig. 3 is a schematic structural diagram of another photovoltaic system according to an embodiment of the present utility model.

Fig. 4 is a schematic cross-sectional view of a fixing device according to an embodiment of the utility model.

Fig. 5 is a schematic cross-sectional view of another fixing device according to an embodiment of the present utility model.

Fig. 6 is a schematic cross-sectional view of still another fixing device according to an embodiment of the present utility model.

Fig. 7 is a schematic cross-sectional view of another fixing device according to an embodiment of the present utility model.

Detailed Description

The technical scheme of the utility model will be described below with reference to the accompanying drawings.

Reference will now be made in detail to embodiments of the present utility model, examples of which are illustrated in the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

The terms "first," "second," "third," "fourth," and the like in this disclosure, if any, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the utility model described herein may be implemented in sequences other than those illustrated or otherwise described herein.

Unless defined otherwise, technical terms or scientific data used herein should be understood to have a common meaning as understood by one of ordinary skill in the art to which this utility model belongs. In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings, are merely for convenience in describing the present utility model and simplifying the description, and the apparatus or elements referred to are not necessarily oriented, configured or operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In order to make the technical problems solved by the present utility model, the technical solutions adopted and the technical effects achieved more clear, the technical solutions of the embodiments of the present utility model will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present utility model, but not all embodiments.

Fig. 1 is a schematic structural diagram of a photovoltaic system 1000 according to an embodiment of the present utility model.

As shown in fig. 1, the photovoltaic system 100 includes a photovoltaic curtain wall 110, a photovoltaic power optimizer 120 and a cable 130, wherein the photovoltaic curtain wall 110 and the photovoltaic power optimizer 120 are respectively installed at two sides of a wall 140, and the photovoltaic curtain wall 110 and the photovoltaic power optimizer 120 are connected through the cable 130. Specifically, the photovoltaic curtain wall 110 is installed outdoors so as to receive the irradiation of sunlight; the photovoltaic power optimizer 120 is installed at any place in the room by a fixture (not shown) to facilitate safe and reliable installation and maintenance of the photovoltaic power optimizer 120.

The photovoltaic curtain wall 110 is a building curtain wall which integrates solar cells and a building glass curtain wall and converts light energy into electric energy, wherein the photovoltaic curtain wall is formed by combining the solar cells with a building enclosure or building materials, is installed on the outer wall surface of a building as a part of the building enclosure, and provides electricity for the building through inverter conversion or is integrated into a power grid. Specifically, the photovoltaic curtain wall can use special resin to paste a solar cell on glass, is inlaid between two pieces of glass, and converts light energy into electric energy through the cell, wherein the solar cell utilizes photon energy of sunlight to enable electrons of irradiated electrolyte or semiconductor materials to move, so that voltage is generated.

Photovoltaic curtain walls are mainly divided into two categories: independent installability and building material installability. Wherein, independent installation means that the solar panel and the surrounding curtain wall structure are connected into a whole through special components; the installation of building materials requires direct fusion of solar modules in special building materials to produce building materials such as curtain walls, exterior wall units, etc.

The photovoltaic power optimizer 120 is a component-level power photovoltaic system with direct current input and direct current output, and through series connection with a photovoltaic component, the component is always in an optimal working state by adopting a predicted current and voltage technology, and according to the working principle of a step-down topology, the photovoltaic power station is used for solving the influence of shadow shielding, inconsistent orientation or component electrical specification difference on the generated energy, realizing the maximum power output of the component and improving the generated energy of the system. Specifically, the photovoltaic power optimizer adopts a unique software algorithm, can track the maximum power point (maximum power point, MPP) of the single block component in real time, and a user can select different types of power optimizers according to the actual running condition of the photovoltaic system, so that the problem of reduced power generation capacity of the photovoltaic system caused by shadow shielding, component orientation difference or component attenuation inconsistency is solved, the maximum power output and on-line monitoring of the single block component are realized, and the system efficiency is improved.

The cables 130 connect terminals on the photovoltaic curtain wall 110 and the photovoltaic power optimizer 120, respectively. The cable 130 may be a fixed length cable, the length of which may be determined according to the position of the photovoltaic power optimizer 120 set in advance, and since the length of the cable is fixed, the layout of the line may be planned in advance, so that the installation is more attractive; the cable 130 may also be a retractable cable, where the photovoltaic power optimizer 120 is mounted within a certain range, the cable may meet connection requirements, thereby making the mounting of the photovoltaic power optimizer 120 more flexible and facilitating the positional adjustment of the photovoltaic power optimizer 120 at a later time, where the cable may be retractable, for example, by being wound into a spring shape, and may be stretched.

The fixing device is used to fix the photovoltaic power optimizer 120 at any indoor location, and for convenience of description, the photovoltaic power optimizer 120 is mounted on a wall surface by the fixing device in fig. 1 as an example, and in fact, the photovoltaic power optimizer 120 may be mounted at any indoor location.

Based on the scheme, in the embodiment of the utility model, the photovoltaic curtain wall and the photovoltaic power optimizer in the photovoltaic system can be separately installed, so that the photovoltaic power optimizer and the photovoltaic curtain wall can be prevented from being installed at outdoor high altitude, and the safe and reliable installation and maintenance of the photovoltaic power optimizer are realized. And the shutdown caused by different supply periods of the photovoltaic curtain wall and the photovoltaic power optimizer can be avoided.

Further, the photovoltaic system 100 further comprises a heat dissipating device (not shown in the figure) for accelerating the flow rate of the photovoltaic power optimizer surface air, which may be an air pump, for example. The heat dissipation efficiency of the photovoltaic power optimizer can be improved through the heat dissipation equipment, so that the service life of the photovoltaic power optimizer is prolonged.

In one possible implementation, the photovoltaic power optimizer 120 is directly mounted on the wall surface, specifically, as shown in fig. 2, fig. 2 is a schematic structural diagram of still another photovoltaic system 1000 provided in an embodiment of the present utility model, where the mounting manner of the photovoltaic power optimizer 120 directly mounted on the wall surface includes but is not limited to riveting, bolting, and bonding, and the fixing device may refer to rivets, bolts, and bonding layers, so that the mounting cost can be reduced by directly mounting the photovoltaic power optimizer 120 on the wall surface.

Further, the fixing device 150 further includes a first housing and a first cover, where the first housing includes a side wall, and the side wall, the first housing, and the indoor wall may enclose a cavity, and the photovoltaic power optimizer 120 may be accommodated in the cavity. The fixture 150 is mounted to the wall surface by means including, but not limited to, riveting, bolting, and bonding. The fixing device 150 is used for isolating the photovoltaic power optimizer 120 from the external environment, so that the photovoltaic power optimizer 120 is prevented from being influenced by the external environment, and the service life is prolonged. It should be appreciated that one or more photovoltaic power optimizers 120 may be housed within the cavity.

In one possible implementation, the photovoltaic power optimizer 120 is indirectly mounted on a wall surface, specifically, as shown in fig. 3, fig. 3 is a schematic structural diagram of still another photovoltaic system 1000 provided in an embodiment of the present utility model, the photovoltaic power optimizer 120 is mounted in the fixing device 150, the fixing device 150 is mounted on the wall surface, the mounting manner of the photovoltaic power optimizer 120 in the container and the fixing device 150 on the wall surface includes but is not limited to riveting, bolting and bonding, the fixing device 150 includes a first housing and a first cover, wherein the first housing includes a side wall and a bottom wall, the first housing and the first cover may enclose a cavity, the bottom wall is fixed on an indoor wall, and the photovoltaic power optimizer 120 may be accommodated in the cavity. Illustratively, the fixture 150 is a mounting box or a wire chase. The photovoltaic power optimizer 120 is indirectly installed on the wall surface through the fixing device 150, so that the photovoltaic power optimizer 120 is prevented from being influenced by external environment, and the service life is prolonged. It should be appreciated that one or more photovoltaic power optimizers 120 may be housed within the cavity.

The fixture 150 is described below with respect to fig. 4-7. Fig. 4 is a schematic cross-sectional view of a fixing device according to an embodiment of the utility model. As shown in fig. 4, the fixing device 150 includes a housing 151, a cover 152 and a chute 153, wherein the housing 151 includes side walls, the housing 151, the wall 140 and the cover 152 can enclose a cavity 154, the housing 151 is fixed on the wall 140, and one or more photovoltaic power optimizers are accommodated in the cavity 154. The opposite sides of the housing 151 are provided with sliding grooves 153, the cover 152 can slide along the sliding grooves 153, it should be understood that the positions of the sliding grooves and the sliding directions of the corresponding cover 152 in fig. 4 are only examples, the sliding grooves can be disposed on the other pair of opposite sides, and the sliding grooves can be disposed on one side only. When the photovoltaic power optimizer needs to be installed, overhauled or moved, the cavity can be opened by sliding the cover body, so that the photovoltaic power optimizer is operated.

To facilitate heat dissipation from the photovoltaic power optimizer housed within the cavity 154, one or more through holes 154 may be provided in the housing 151 and/or the cover 152, and further, a heat dissipation device may be provided in the cavity 154 and/or the through holes 155 for accelerating the air flow rate within the cavity, which may be a micro air pump, for example.

Further, a sealing layer (not shown in the figure) can be arranged on the contact surface of the cover body and the shell and/or the contact surface of the shell and the wall body, so that the photovoltaic power optimizer in the cavity is prevented from being broken down due to damp.

Further, an insulating layer can be arranged on the surface of the photovoltaic power optimizer, so that the safety of the photovoltaic power optimizer is improved.

Fig. 5 is a schematic cross-sectional view of another fixing device according to an embodiment of the present utility model. As shown in fig. 5, the fixing device 150 includes a housing 151, a cover 152 and a connecting member 156, wherein the housing 151 includes a side wall, the housing 151, the wall 140 and the cover 152 may enclose a cavity 154, the housing 151 is fixed on the wall 140, and one or more photovoltaic power optimizers are accommodated in the cavity 154. One side of the housing 151 is provided with a connection member 156, and the cover 152 can rotate around the connection member 156. When the photovoltaic power optimizer needs to be installed, overhauled or moved, the cavity can be opened by rotating the cover body, so that the photovoltaic power optimizer is operated.

To facilitate heat dissipation from the photovoltaic power optimizer housed within the cavity 154, one or more through holes 154 may be provided in the housing 151 and/or the cover 152, and further, a heat dissipation device may be provided in the cavity 154 and/or the through holes 155 for accelerating the air flow rate within the cavity, which may be a micro air pump, for example.

Fig. 6 is a schematic cross-sectional view of a fixing device according to an embodiment of the utility model. As shown in fig. 6, the fixing device 160 includes a housing 161, a cover 162 and a chute 163, wherein the housing 151 includes a side wall and a bottom wall, the housing 161 and the cover 162 may enclose a cavity 164, the housing 161 is fixed on the wall 140, and one or more photovoltaic power optimizers are accommodated in the cavity 164. The opposite sides of the housing 161 are provided with sliding grooves 163, and the cover 162 can slide along the sliding grooves 163, it should be understood that the positions of the sliding grooves and the sliding directions of the corresponding cover 162 in fig. 6 are only examples, the sliding grooves can be provided on the other pair of opposite sides, and the sliding grooves can be provided on only one side. When the photovoltaic power optimizer needs to be installed, overhauled or moved, the cavity can be opened by sliding the cover body, so that the photovoltaic power optimizer is operated.

To facilitate heat dissipation from the photovoltaic power optimizer housed within the cavity 164, one or more through holes 164 may be provided in the housing 161 and/or the cover 162, and further, a heat dissipation device may be provided in the cavity 164 and/or the through holes 165 for accelerating the air flow rate within the cavity, which may be a micro air pump, for example.

Fig. 7 is a schematic cross-sectional view of a further fixing device according to an embodiment of the present utility model. As shown in fig. 7, the fixing device 160 includes a housing 161, a cover 162 and a connector 166, wherein the housing 151 includes a side wall and a bottom wall, the housing 161 and the cover 162 may enclose a cavity 164, the housing 161 is fixed on the wall 140, and one or more photovoltaic power optimizers are accommodated in the cavity 164. One side of the housing 161 is provided with a connector 166, and the cover 162 can rotate around the connector 166.

When the photovoltaic power optimizer needs to be installed, overhauled or moved, the cavity can be opened by rotating the cover body, so that the photovoltaic power optimizer is operated 5.

To facilitate heat dissipation from the photovoltaic power optimizer housed within cavity 164, one or more through holes 164 may be provided in housing 161 and/or cover 162, and further, heat dissipation devices may be provided in cavity 164 and/or through holes 166 for accelerating the air flow rate within the cavity, which may be, for example, a micro air pump.

Further, a sealing layer (not shown in the figure) may be provided at the contact surface of the cover and the housing, to avoid failure of the photovoltaic 0 v power optimizer in the cavity due to moisture.

Further, an insulating layer can be arranged on the surface of the photovoltaic power optimizer, so that the safety of the photovoltaic power optimizer is improved. The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims (10)

1. A photovoltaic system, comprising:

one or more photovoltaic curtain walls, one or more photovoltaic power optimizers, one or more cables and a fixing device, wherein the one or more photovoltaic curtain walls are curtain walls which are installed outdoors and are used for converting solar energy into electric energy, and the one or more photovoltaic power optimizers are used for adjusting electric power output by the one or more photovoltaic curtain walls;

each photovoltaic power optimizer is connected with one photovoltaic curtain wall through one cable;

the fixing device is used for fixing the one or more photovoltaic power optimizers on an indoor wall.

2. The photovoltaic system of claim 1, wherein the fixture comprises:

a first cover;

the first shell comprises a side wall, the first shell is fixed on an indoor wall, a first cavity is formed by the first cover, the first shell and the indoor wall, and the first cavity accommodates one or more photovoltaic power optimizers.

3. The photovoltaic system of claim 2, wherein the photovoltaic system is configured to,

the first shell further comprises a bottom wall, and the bottom wall is fixed on the indoor wall;

one or more first through holes are formed in the first shell, and the one or more first through holes are used for enabling the one or more cables to pass through.

4. A photovoltaic system according to claim 2 or 3, wherein the first housing is provided with a first chute along which the first cover is slidable.

5. A photovoltaic system according to claim 2 or 3, wherein one side of the first housing is connected to one side of the first cover by a first connector about which the first cover is rotatable.

6. A photovoltaic system according to claim 2 or 3, wherein the first housing is provided with one or more second through holes for transferring heat emitted by the one or more photovoltaic power optimizers out of the photovoltaic system.

7. A photovoltaic system according to claim 2 or 3, wherein the first cover body is provided with one or more third through holes, and the one or more third through holes are used for transferring heat emitted by the one or more photovoltaic power optimizers to outside of the photovoltaic system.

8. A photovoltaic system according to claim 2 or 3, wherein the first housing and the first cover are provided with one or more fourth through holes for transferring heat emitted by the one or more photovoltaic power optimizers out of the photovoltaic system.

9. A photovoltaic system according to any one of claims 1 to 3, further comprising a heat sink device for accelerating the air flow of the one or more photovoltaic power optimizer surfaces.

10. A photovoltaic system according to any one of claims 1 to 3, wherein the one or more cables are retractable.