Balcony intelligent photovoltaic system

Abstract

The utility model discloses an intelligent photovoltaic system for a balcony, which belongs to the technical field of photovoltaic systems and comprises a plurality of photovoltaic panel assemblies and micro inverters, the photovoltaic panel assemblies are mounted on the sunny side of the balcony, the micro inverters are arranged on the shady surfaces of the photovoltaic panel assemblies, and the micro inverters are electrically connected with the photovoltaic panel assemblies; the system further comprises an alternating current grid-connected point and an ECU unit, the micro inverter is electrically connected with the alternating current grid-connected point, and the alternating current grid-connected point is controlled by the ECU unit. According to the utility model, the micro inverter and the photovoltaic panel assembly are installed into one body, and the micro inverter can be installed at any appropriate position along with the photovoltaic panel assembly, thereby greatly facilitating the installation work of the photovoltaic panel assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic systems, and in particular to an intelligent balcony photovoltaic system. Background Art

[0002] Using solar energy is an important way to save energy in buildings, and solar buildings are a form of energy-saving buildings. The basic requirement of solar buildings is to use solar energy, the most abundant, most convenient and pollution-free energy, for heating and cooling, hot water supply and photoelectric conversion to meet people's living needs, while achieving the goal of reducing and not using fossil fuels.

[0003] Balcony space is a place with sufficient sunlight, and the case of installing photovoltaic systems on balconies is gradually accepted at home and abroad. For example, the Chinese patent document with publication number CN103066619A discloses a photovoltaic grid-connected power generation system for residential balconies, in which a centralized grid-connected inverter is installed near the residential balcony, and the inverter is arranged separately from the photovoltaic panel assembly. This arrangement of the inverter greatly limits the installation method and installation position of the photovoltaic panel assembly, which brings great inconvenience to the arrangement of the photovoltaic panel assembly. Utility Model Content

[0004] 1. Technical problems to be solved by the utility model

[0005] In view of the problem in the prior art that the inverter and photovoltaic panel assembly of the balcony photovoltaic system are arranged separately, which limits the installation method and position of the photovoltaic panel assembly, the utility model proposes a balcony intelligent photovoltaic system, in which a micro inverter is installed integrally with the photovoltaic panel assembly. The micro inverter can be installed at any suitable position along with the photovoltaic panel assembly, which greatly facilitates the installation of the photovoltaic panel assembly.

[0006] 2. Technical solution

[0007] In order to achieve the above-mentioned purpose, the utility model provides a balcony intelligent photovoltaic system, including a plurality of photovoltaic panel assemblies and a micro-inverter, wherein the photovoltaic panel assembly is installed on the sunny side of the balcony, and the micro-inverter is arranged on the backlight surface of the photovoltaic panel assembly, and the micro-inverter is electrically connected to the photovoltaic panel assembly; it also includes an AC power grid connection point and an ECU unit, the micro-inverter is electrically connected to the AC power grid connection point, and the AC power grid connection point is controlled by the ECU unit.

[0008] Furthermore, the micro inverter is installed on any side frame of the photovoltaic panel assembly.

[0009] Furthermore, two adjacent photovoltaic panel assemblies are connected in series and electrically connected to the micro inverter.

[0010] Furthermore, the backlight surfaces of the two photovoltaic panel assemblies are each provided with a junction box, and each photovoltaic panel assembly is provided with a wire, which passes through the junction box and one end of the wire is connected to the micro inverter through a DC connector.

[0011] Furthermore, the AC output end of the micro inverter is connected to an AC bus via an AC connector, and the AC bus is electrically connected to the AC grid connection point.

[0012] Furthermore, the AC connector includes two AC terminals, which are plug-connected, one of which is connected to the AC bus, and the other is connected to the AC output end of the micro inverter.

[0013] Furthermore, the AC power grid connection point and the ECU unit are arranged indoors.

[0014] Furthermore, the balcony is provided with a bracket extending outward, and the sun-facing surface of the photovoltaic panel assembly is inclined with respect to the vertical direction through the bracket.

[0015] Furthermore, the inclination angles of the plurality of photovoltaic panel assemblies are the same, and the top edges and bottom edges of the plurality of photovoltaic panel assemblies are arranged flush with each other.

[0016] Furthermore, the bracket is fixedly installed on the outer side of the balcony by means of bolts, and the photovoltaic panel assembly is fixed to the bracket by means of bolts.

[0017] 3. Beneficial effects

[0018] Compared with the existing known technologies, the technical solution provided by the utility model has the following beneficial effects:

[0019] (1) The utility model provides a balcony intelligent photovoltaic system, in which the photovoltaic panel assembly is installed on the sunny side of the balcony, so that it can better receive sunlight and improve power generation efficiency. The micro inverter is smaller in size, and the micro inverter is arranged on the backlight side of the photovoltaic panel assembly, so the micro inverter is installed integrally with the photovoltaic panel assembly, so the micro inverter can be installed with the photovoltaic panel assembly to any suitable position, which greatly facilitates the installation of the photovoltaic panel assembly.

[0020] (2) The utility model provides a balcony intelligent photovoltaic system, in which the micro-inverter can be installed on any side frame of the photovoltaic panel assembly. The installation position is flexible, which is convenient for the installation of the photovoltaic panel assembly and conducive to the layout of the lines. The two adjacent photovoltaic panel assemblies are connected in series to collect the direct current generated, and then converted into alternating current output through the micro-inverter. The junction box can connect the solar cell circuit inside the photovoltaic panel assembly with the external wire to output direct current, and the direct current is input into the micro-inverter through the wire. The micro-inverter collects the converted alternating current at the alternating current grid connection point, giving priority to meeting the needs of the local load, which can improve the utilization rate of energy and reduce unnecessary energy loss during transmission.

[0021] (3) In the utility model, the AC grid connection point and ECU are set indoors. On the one hand, it can reduce the influence of environmental factors such as rain, snow, and dust on the two. On the other hand, it is convenient for users to control the photovoltaic system indoors and distribute electric energy reasonably. The sunny side of the photovoltaic panel assembly is tilted, and the appropriate tilt angle can increase the solar radiation of the photovoltaic panel assembly and improve the power generation. In addition, the appropriate tilt angle can reduce the dust and snow on the surface of the photovoltaic panel assembly and improve the power generation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In the drawings, the sizes and proportions do not represent the sizes and proportions of actual products. The drawings are merely illustrative, and some non-essential elements or features are omitted for clarity.

[0023] Figure 1 It is a schematic diagram of the layout of the photovoltaic system of an embodiment of the utility model;

[0024] Figure 2 It is a schematic diagram of the structure of the bracket of the embodiment of the utility model;

[0025] Figure 3 It is a schematic diagram of the back structure of the photovoltaic panel assembly according to an embodiment of the utility model.

[0026] Explanation of the symbols in the schematic diagram:

[0027] 1. Photovoltaic panel assembly; 2. Micro inverter; 3. AC bus; 4. AC grid connection point; 5. ECU unit; 6. Junction box; 7. AC connector; 8. DC connector; 9. Bracket. DETAILED DESCRIPTION

[0028] In order to further understand the content of the utility model, the utility model is described in detail in conjunction with the accompanying drawings and embodiments. What is described here is only the preferred embodiment of the utility model. Those skilled in the art can think of other ways to implement the utility model based on the preferred embodiment, and other ways also fall within the scope of the utility model.

[0029] In the description of the present invention, it should be noted that the terms "center", "middle", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0030] Example

[0031] Reference Figure 1-Figure 3 This embodiment provides a balcony intelligent photovoltaic system, including two photovoltaic panel assemblies 1 and a micro-inverter 2. The photovoltaic panel assembly 1 is installed on the sunny side of the balcony, which can better receive sunlight and improve power generation efficiency. The micro-inverter 2 is arranged on the backlight side of the photovoltaic panel assembly 1 to prevent the micro-inverter 2 from being directly exposed to sunlight, so as to prevent high temperature from causing adverse effects on the micro-inverter 2. Moreover, the volume of the micro-inverter 2 is smaller, and the micro-inverter 2 is arranged on the backlight side of the photovoltaic panel assembly 1, so the micro-inverter 2 is installed integrally with the photovoltaic panel assembly 1, so the micro-inverter 2 can be installed with the photovoltaic panel assembly 1 to any suitable position, which greatly facilitates the installation of the photovoltaic panel assembly 1. The micro-inverter 2 is electrically connected to the photovoltaic panel assembly 1, and can convert the direct current generated by the photovoltaic panel assembly 1 into alternating current. The photovoltaic system also includes an alternating current grid connection point 4 and an ECU unit 5. The micro-inverter 2 is electrically connected to the alternating current grid connection point 4, and the alternating current grid connection point 4 is controlled by the ECU unit 5. The AC grid connection point 4 and the ECU unit 5 are arranged indoors, which can reduce the influence of environmental factors such as rain, snow, and dust on the two on the one hand, and facilitate users to control the photovoltaic system indoors and distribute electric energy reasonably on the other hand.

[0032] It should be noted that the number of photovoltaic panel assemblies 1 is not limited to two, and three, four or even more may be set. The specific number is determined by the power required by the load of the entire house. Two or three adjacent photovoltaic panel assemblies 1 can share the same micro inverter 2 to achieve the purpose of current conversion. Figure 1 In order to make the micro inverter 2 visible, a lighter color is used to distinguish it from the photovoltaic panel assembly 1. The actual micro inverter 2 is located on the backlight side of the photovoltaic panel assembly 1. Figure 1 The angle is not visible.

[0033] In order to obtain sufficient power generation, the photovoltaic panel assembly 1 needs to be tilted at a certain angle to obtain sufficient sunlight. Figure 1 and Figure 2 As shown, the balcony is provided with a bracket 9 extending outward, and the sun-facing side of the photovoltaic panel assembly 1 is inclined with respect to the vertical direction through the bracket 9. The sun-facing side of the photovoltaic panel assembly 1 is inclined, and a suitable inclination angle can increase the amount of sunlight on the photovoltaic panel assembly 1 and improve the power generation. Moreover, a suitable inclination angle can reduce the accumulation of dust and snow on the surface of the photovoltaic panel assembly 1, thereby improving the power generation efficiency. The inclination angles of the two photovoltaic panel assemblies 1 are the same, and the top and bottom edges of several photovoltaic panel assemblies 1 are arranged flush. Therefore, the two photovoltaic panel assemblies 1 can form a regular plane, avoiding the shadows generated under the irradiation of sunlight to block the light-receiving surface of the photovoltaic panel assembly 1, thereby further improving the efficiency of electric energy conversion. On the other hand, in order to facilitate the installation and subsequent maintenance of the photovoltaic panel assembly 1, the bracket 9 is fixedly installed on the outside of the balcony by bolts, and the photovoltaic panel assembly 1 and the bracket 9 are fixed by bolts.

[0034] In this embodiment, Figure 3 As shown, the micro-inverter 2 is installed at any side frame of the photovoltaic panel assembly 1, and the installation position is flexible, which is convenient for the installation of the photovoltaic panel assembly 1 and is conducive to the layout of the line. Two adjacent photovoltaic panel assemblies 1 are connected in series and electrically connected to the micro-inverter 2. The DC current generated by the two photovoltaic panel assemblies 1 in series is collected in the micro-inverter 2, and the micro-inverter 2 converts the DC current into AC current for output. Specifically, the backlight surface of the two photovoltaic panel assemblies 1 is provided with a junction box 6, and each photovoltaic panel assembly 1 is provided with a wire, which passes through the junction box 6 and one end of the wire is connected to the micro-inverter 2 through a DC connector 8. The AC output end of the micro-inverter 2 is connected to the AC bus 3 through an AC connector 7, and the AC bus 3 is electrically connected to the AC grid point 4. The junction box 6 can connect the solar cell circuit inside the photovoltaic panel assembly 1 to the external wire, output DC power, and input the DC power into the micro-inverter 2 through the wire. The micro inverter 2 collects the converted AC power at the AC grid connection point 4, giving priority to meeting the needs of local loads, which can improve the utilization rate of energy and reduce unnecessary energy loss during transmission. Specifically, the AC connector 7 includes two AC terminals, which are plug-in connected, one of which is connected to the AC bus 3, and the other is connected to the AC output end of the micro inverter 2.

[0035] The above schematically describes the present invention and its implementation methods, which are not restrictive. The drawings show only one implementation method of the present invention, and the actual structure is not limited thereto. Therefore, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the present invention, they should all fall within the protection scope of the present invention.

Claims

1. A balcony intelligent photovoltaic system, comprising a plurality of photovoltaic panel assemblies (1) and a micro inverter (2), wherein the photovoltaic panel assemblies (1) are installed on the sunny side of the balcony, and characterized in that: The micro inverter (2) is arranged on the backlight surface of the photovoltaic panel assembly (1), and the micro inverter (2) is electrically connected to the photovoltaic panel assembly (1); and further comprises an alternating current grid connection point (4) and an ECU unit (5), the micro inverter (2) is electrically connected to the alternating current grid connection point (4), and the alternating current grid connection point (4) is controlled by the ECU unit (5).

2. A balcony intelligent photovoltaic system according to claim 1, characterized in that: The micro inverter (2) is installed on any side frame of the photovoltaic panel assembly (1).

3. The balcony intelligent photovoltaic system according to claim 1, characterized in that: Two adjacent photovoltaic panel assemblies (1) are connected in series and electrically connected to the micro inverter (2).

4. The balcony intelligent photovoltaic system according to claim 3, characterized in that: The backlight surfaces of the two photovoltaic panel assemblies (1) are each provided with a junction box (6), and each photovoltaic panel assembly (1) is provided with a wire, which passes through the junction box (6) and one end of which is connected to the micro inverter (2) via a DC connector (8).

5. The balcony intelligent photovoltaic system according to claim 4, characterized in that: The AC output end of the micro inverter (2) is connected to the AC bus (3) via an AC connector (7), and the AC bus (3) is electrically connected to the AC power grid point (4).

6. The balcony intelligent photovoltaic system according to claim 5, characterized in that: The AC connector (7) comprises two AC terminals, which are plug-connected to each other, one of which is connected to the AC bus (3) and the other is connected to the AC output end of the micro inverter (2).

7. The balcony intelligent photovoltaic system according to claim 1, characterized in that: The AC power grid connection point (4) and the ECU unit (5) are arranged indoors.

8. The balcony intelligent photovoltaic system according to claim 1, characterized in that: The balcony is provided with a bracket (9) extending outwards, and the sun-facing surface of the photovoltaic panel assembly (1) is arranged to be inclined with respect to the vertical direction through the bracket (9).

9. The balcony intelligent photovoltaic system according to claim 8, characterized in that: The inclination angles of the plurality of photovoltaic panel assemblies (1) are the same, and the top edges and bottom edges of the plurality of photovoltaic panel assemblies (1) are arranged flush with each other.

10. The balcony intelligent photovoltaic system according to claim 8, characterized in that: The bracket (9) is fixedly installed on the outer side of the balcony by means of bolts, and the photovoltaic panel assembly (1) and the bracket (9) are fixedly installed by means of bolts.

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