CN216215920U - Energy storage formula photovoltaic power generation system suitable for cities and towns community - Google Patents

Abstract

The utility model discloses an energy storage type photovoltaic power generation system suitable for urban communities, comprising a photovoltaic power generation module, a converter module, an intelligent distribution box module and a load module; wherein, the input end of the converter module is connected with the photovoltaic power generation module , the output end is connected to the load through the smart distribution box, the converter is used to convert the DC/DC power into the AC/AC power used by the load of household appliances, the smart distribution box module includes a smart meter and a controller, which is used to count the load The amount of power used and the priority order of feeding; it also includes an energy storage module, which stores the excess DC/DC power after the load is used, and provides the load for use when the power is insufficient. The power generation system of the utility model makes full use of the balcony space of the family, can effectively relieve the shortage of power supply in urban communities, reduce the electricity cost of residents, and provide users with uninterrupted lighting and other power supplies, reduce the impact of temporary power outages on the lives of residents, and improve the efficiency of residents. Happiness index.

Description

An energy storage photovoltaic power generation system suitable for urban communities

technical field

The utility model belongs to the technical field of solar photovoltaic power generation, in particular to an energy storage photovoltaic power generation system suitable for urban communities.

Background technique

In recent years, with people's attention to the living environment, coupled with the gradual exhaustion of petrochemical energy, and the increasing cost and difficulty of mining, the energy crisis has attracted great attention from all over the world, and a lot of scientific research strength and funds have been invested in new energy research and development. It is developed to achieve the overall national goals of "carbon peaking" in 2030 and "carbon neutrality" in 2060. Among them, solar photovoltaic power generation is widely favored due to its abundant resources, clean and pollution-free, long life, and easy to use and maintain.

As we all know, a large number of photovoltaic power generation equipment has been laid in the open areas of Tibet, Qinghai, Xinjiang, Inner Mongolia, Gansu, Sichuan and other provinces in China, as well as on the coastal islands of my country, providing reliable and clean energy for the local and national power grids. In a big country, the power consumption is huge, and these power generation equipment alone still cannot meet people's demand for clean energy. At the same time, due to the special circumstances of residential buildings in urban communities, the property rights of the roof surface belong to all residents, and individual households cannot install photovoltaic power generation equipment. The balcony of a single household has good lighting conditions, but the existing technology does not provide a photovoltaic power generation system for a single household's house, which makes it difficult to deploy photovoltaic power generation systems in urban communities. In addition, when the mains is overhauled or the power is cut off, there is no emergency power consumption, which affects the quality of life of the people.

In view of this, the inventor of the present invention proposes an energy storage photovoltaic power generation system suitable for urban communities by virtue of years of experience and practice in related industries, so as to overcome the defects of the prior art.

Utility model content

The purpose of this utility model is to overcome the shortcomings of the above-mentioned prior art, and to provide an energy storage photovoltaic power generation system suitable for urban communities. The power supply is tight and household electricity consumption is reduced, which effectively reduces the cost of residential electricity consumption; in addition, the photovoltaic power generation system, by setting the energy storage module, is convenient to store the excess power after the load module is used. When the photovoltaic power generation module generates electricity When the amount of electricity is reduced or even cannot generate electricity, the electricity stored in the energy storage module is fed into the load module to reduce waste of electricity.

The purpose of this utility model is to be solved by the following technical solutions:

An energy storage photovoltaic power generation system suitable for urban communities, comprising a photovoltaic power generation module, an energy storage module, a converter module, an intelligent distribution box module and a load module;

Wherein, the input end of the converter module is connected with the photovoltaic power generation module, the output end of the converter module is connected with the load module through the intelligent distribution box module, and the photovoltaic power generation module is used for converting light energy into electrical energy, so The converter module is used to convert the DC/DC electricity generated by the photovoltaic power generation module into the AC/AC electricity used by the household appliance load module, and the smart distribution box module includes a smart meter and a controller for counting the load module The amount of electricity used and the order of priority of feeding;

The input end of the energy storage module is electrically connected with the photovoltaic power generation module, and is connected with the intelligent power distribution box module, and the power consumption priority order is controlled by the intelligent power distribution box module, and the intelligent power distribution box module preferentially generates the photovoltaic power generation module. The electric energy supplied by the load module is used by the load module, and the excess DC/DC electricity after the load module is used is stored in the energy storage module;

The output end of the energy storage module is electrically connected to the converter module, and is used for converting the stored DC/DC electricity into AC/AC through the converter module when the photovoltaic power generation module cannot generate electric energy or the generated electric energy is insufficient. The electricity is used by the load module.

Further, the photovoltaic power generation system further includes a municipal power grid module, which is electrically connected to the smart distribution box module in two directions, and the smart power distribution box module is used for statistics and regulation of the photovoltaic power generation system to the municipal power grid module or the smart power distribution box module. The power status of the utility grid module feeding the load module.

Further, the priority order of power distribution of the intelligent power distribution box module is: a first priority load module, a second priority energy storage module, and a third priority city power grid module.

Further, the converter module is a DC-AC energy storage inverter;

The load module includes an emergency load and other loads, the emergency load is directly connected to the emergency power supply output port provided by the DC-AC energy storage inverter, and the other loads are electrically connected to the intelligent distribution box module.

Further, the energy storage module includes a battery management system and an energy storage battery pack, and the battery management system is used for intelligently managing and maintaining each battery unit in the energy storage battery pack to prevent overcharging and overdischarging of the battery.

Further, the photovoltaic power generation module includes a photovoltaic panel for converting light energy into electrical energy, and a bracket for installing the photovoltaic panel, and the bracket is installed outside the building balcony wall.

Further, the energy storage module and the converter module are fixedly installed on the load-bearing wall inside the balcony.

Further, the support includes a rear column vertically fixed on the wall of the building balcony, a cross bar with a guide rail is laterally fixed at the bottom of the rear column, and a front column is slidably arranged on the cross bar, and the front column is telescopic. type sleeve structure, the bottom of which is provided with a sliding block, the sliding block is matched with the guide rail of the cross bar;

The bracket further includes an inclined plate, two ends of the inclined plate are hinged with the tops of the front column and the rear column respectively, and the photovoltaic panel is fixedly arranged on the surface of the inclined plate.

Further, the front column includes an outer tube and an inner sleeve sleeved in the inner cavity of the outer tube;

The outer wall of the outer tube is axially spaced with a number of through holes, the inner sleeve is fixed with an elastic top column, and the height of the front column is adjusted through the cooperation of the elastic top column and different through holes, and then adjust The illumination angle of the photovoltaic panel.

Further, the photovoltaic panel is a single crystal photovoltaic module.

Compared with the prior art, the beneficial effects of the present utility model:

The utility model is an energy storage type photovoltaic power generation system suitable for urban communities, which builds a residential (household) single-phase small-load energy storage type photovoltaic power generation system with brand-new functions; The power supply is connected to the grid. When there is sunlight during the day, the photovoltaic power generation is directly supplied to the load. When the photovoltaic power supply is insufficient, it can be supplemented by the mains or battery. After the photovoltaic power generation is used by the load, the excess power is charged into the battery for backup. The electricity charged into the battery supplies power to the load at the same time as the mains, and the battery reserves a part of the electricity for emergency power supply, and provides some small loads of emergency power supply such as lighting for residents after the mains is cut off; the power generation system makes full use of the home balcony Space, can effectively alleviate the shortage of power supply in urban communities and reduce the external power consumption of households, effectively reduce the cost of residential electricity expenditures, and provide users with uninterrupted lighting and other power supplies, reducing the impact of temporary power outages on residents' lives, Improve residents' happiness index.

Description of drawings

The accompanying drawings herein are incorporated into and constitute a part of this specification, and together with the description, serve to explain the principles of the invention.

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. It is obvious to those skilled in the art that In other words, on the premise of no creative labor, other drawings can also be obtained based on these drawings.

1 is a structural block diagram of an energy storage photovoltaic power generation system of the present invention;

FIG. 2 is a structural block diagram of the emergency load power supply of the energy storage photovoltaic power generation system of the present invention;

3 is a schematic diagram of the installation structure of the energy storage photovoltaic power generation system of the present invention;

FIG. 4 is a schematic diagram of the adjusting structure of the sleeve in the front column of the present invention.

Among them: 1 is photovoltaic power generation module; 2 is energy storage module; 3 is converter module; 4 is intelligent distribution box module; 5 is load module; 6 is city grid module; 11 is photovoltaic panel; 12 is bracket; 21 is Battery management system; 22 is energy storage battery pack; 51 is emergency load; 52 is other loads; 121 is rear column; 122 is cross bar; 123 is front column; 124 is inclined plate; 1231 is outer tube; 1232 is inner sleeve pipe; 12311 is a through hole; 12321 is an elastic top post.

Detailed ways

Exemplary embodiments will be described in detail herein, examples of which are illustrated in the accompanying drawings. Where the following description refers to the drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present invention. Rather, they are merely examples of means consistent with the aspects of the invention recited in the appended claims.

In order to make those skilled in the art better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

1 to 2, an energy storage photovoltaic power generation system suitable for urban communities of the present invention includes a photovoltaic power generation module 1, an energy storage module 2, a converter module 3, an intelligent distribution box module 4 and a load module 5.

The input end of the converter module 3 is connected to the photovoltaic power generation module 1, the output end of the converter module 3 is connected to the load module 5 through the intelligent distribution box module 4, and the photovoltaic power generation module 1 is used to convert light energy into electrical energy , the electrical energy is DC/DC at this time, the converter module 3 is used to convert the DC/DC electricity generated by the photovoltaic power generation module 1 into the AC/AC electricity used by the household appliance load module 5, and the intelligent distribution box module 4 includes intelligent The electric meter and the controller, the smart electric meter is used to count the electric quantity used by the load module 5, and the controller is used to control and set the order of feeding priority.

The input end of the energy storage module 2 is electrically connected to the photovoltaic power generation module 1 and is connected to the intelligent distribution box module 4, and the power consumption priority order of the energy storage module 2 is controlled through the intelligent distribution box module 4. The power distribution box module 4 gives priority to the electric energy generated by the photovoltaic power generation module 1 for the load module 5, and the excess DC/DC power after the load module 5 is used is directly stored in the energy storage module 2; the output end of the energy storage module 2 It is electrically connected to the converter module 3, and is used for the energy storage module 2 to convert the stored DC/DC electricity into AC/AC electricity for the load module 5 through the converter module 3 when the photovoltaic power generation module 1 cannot generate electricity or the electricity generation is insufficient. use.

This embodiment also includes a city grid module 6, which is electrically connected to the smart distribution box module 4 in both directions, and the smart distribution box module 4 is used for statistics and regulation of the photovoltaic power generation system to the city grid module 6 or the city grid module 4. The power status of the grid module 6 feeding the load module 5 . In this way, when the electricity generated by the system is used by the load module and the energy storage module is fully charged, the excess electricity can be transferred to the utility grid module to generate revenue.

Based on the above description, the priority order of the smart distribution box module 4 in this embodiment is: the first priority load module 5 , the second priority energy storage module 2 , and the third priority city grid module 6 .

The converter module 3 in this embodiment is a DC-AC energy storage inverter, which has a single-phase output inverter for on-grid and off-grid use, and has an intelligent energy management function, which can improve the maximum efficiency of the photovoltaic power generation module, and the inverter power 3KW, the inverter has an emergency power supply output port, which can connect emergency loads (single-phase) 51 such as household lighting and living room sockets to the emergency power supply interface of the inverter. The load power of the emergency power supply should be within the range that the inverter can carry. , the time of emergency power supply is also related to the energy storage module and power supply, which should be fully considered when the system is matched; the emergency load 51 is connected to the emergency power supply interface, and other loads 52 are connected to the intelligent distribution box module. The power generation module and the energy storage module preferentially supply power to the emergency load 51 , and a schematic diagram of the system is shown in FIG. 2 . That is to say, an energy storage inverter is used to build a residential (household) single-phase small-load energy storage photovoltaic power generation system with a new function. The system can supply power together with the mains in the form of grid connection. When there is light during the day, the photovoltaic power generation can be directly supplied to the load for use. When the photovoltaic power supply is insufficient, it can be supplemented by the mains or energy storage modules. After the photovoltaic power generation is used by the load, there is excess It is charged into the energy storage module for backup at night, and the electricity charged into the energy storage module is used to supply power to the load at the same time as the mains. The energy storage module reserves a part of the electricity for emergency power supply, and provides lighting and other parts for residents after the mains is cut off. Emergency power supply for small loads. The system allows urban residents to reduce electricity costs while providing uninterrupted lighting and other power supplies for users, reducing the impact of temporary power outages on residents' lives and improving residents' happiness index.

The energy storage module 2 in this embodiment includes a battery management system (also called a BMS) 21 and an energy storage battery pack 22. The energy storage battery pack 22 is composed of a plurality of lithium batteries or colloidal battery cells, preferably lithium batteries, and residential photovoltaic power generation. Since only a single photovoltaic module is installed, it is composed of a DC 24V system energy storage battery; the battery management system 21 is used to intelligently manage and maintain each battery unit in the energy storage battery pack 22 to prevent overcharging and overdischarging of the battery, Extend battery life and monitor battery status.

Because the living conditions of urban residents are high-rise or multi-storey houses, it is necessary to fully consider the sunlight reaching the photovoltaic modules without affecting the home lighting, and the equipment should not occupy the indoor floor area, so the installation of this system is different from the application in other scenarios. As shown in FIG. 3 , the photovoltaic power generation module 1 in this embodiment includes a photovoltaic panel 11 for converting light energy into electrical energy, and a bracket 12 for installing the photovoltaic panel 11 , and the bracket 12 is installed on the outside of the building balcony wall. , the energy storage module 2 and the converter module 3 are fixedly installed on the load-bearing wall inside the balcony.

Specifically, the bracket 12 is an adjustable-angle structure, and the installation staff can select the optimal illumination angle according to the specific orientation of the balcony of each household, so that the photovoltaic panel 11 can fully convert the light energy into electrical energy; the photovoltaic panel 11 Monocrystalline photovoltaic modules are used. The main types of monocrystalline photovoltaic modules are type 60, type 72 and type 66. According to the modules processed by the 166/182/120 large-sized cells currently used in the market, the size of the modules is at least 1.75*1m , the larger size is 2.2*1.1m, which is more suitable for the width of the balcony. If the angle of installation of modules is designed according to the optimal annual power generation, the voltage of the aforementioned 60-type and 72-type photovoltaic modules meets the voltage requirements of the DC-side DC24V system. At present, the power of single-crystal high-efficiency photovoltaic modules is 380-600W , the maximum output DC current is less than 15A, use 2*4 square anti-radiation wire to lead into the indoor balcony after passing through the pipe, the inverter and energy storage battery pack are installed and fixed on the load-bearing wall inside the balcony, and the inverter equipment and household power distribution The box has wire connection and adjustment.

The bracket 12 is made of Q235 hot-dip galvanized steel as a whole, which ensures the strength of the bracket 12 and prevents the bracket 12 from rusting during use. The bracket 12 is fixedly connected with a lightning rod (not shown in the figure) to prevent the photovoltaic panel 11 directly damaged by lightning strikes. The bracket 12 includes a rear column 121 that is vertically fixed on the wall of the balcony of the building. The bottom of the rear column 121 is laterally fixed with a cross bar 122 with a guide rail (not shown in the figure), and a front column 123 is slidably arranged on the cross bar 122. , the front column 123 is a telescopic sleeve structure, the bottom of which is provided with a sliding block (not shown in the figure), the sliding block is matched with the guide rail of the cross bar 122; The two ends of the photovoltaic panel 11 are respectively hinged with the top of the front column 123 and the rear column 122 , and the photovoltaic panel 11 is fixedly arranged on the surface of the inclined plate 124 .

Specifically, the telescopic sleeve structure includes an outer tube 1231 and an inner sleeve 1232 sleeved in the inner cavity of the outer tube 1231; the outer wall of the outer tube 1231 is axially spaced with a number of through holes 12311, and the inner sleeve 1232 is fixed on An elastic top post 12321 is provided, and the height of the front upright post 123 is adjusted through the cooperation of the elastic top post 12321 and the through holes 12311 of different heights, thereby adjusting the irradiation angle of the photovoltaic panel 11 .

The above are only specific embodiments of the present invention, so that those skilled in the art can understand or realize 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 implemented in other embodiments without departing from the spirit or scope of the invention.

It should be understood that the present invention is not limited to what has been described above, and various modifications and changes can be made without departing from its scope. The scope of the present invention is limited only by the appended claims.

Claims (10)

1. An energy storage type photovoltaic power generation system suitable for town communities is characterized by comprising a photovoltaic power generation module (1), an energy storage module (2), a converter module (3), an intelligent distribution box module (4) and a load module (5);

the intelligent household appliance power supply system comprises a converter module (3), a load module (5), an intelligent distribution box module (4), a controller, a power supply module (4), a power supply module (3) and a power supply module (4), wherein the input end of the converter module (3) is connected with the photovoltaic power generation module (1), the output end of the converter module (3) is connected with the load module (5) through the intelligent distribution box module (4), the photovoltaic power generation module (1) is used for converting light energy into electric energy, the converter module (3) is used for converting direct current/Direct Current (DC) power generated by the photovoltaic power generation module (1) into alternating current/Alternating Current (AC) power used by the household appliance load module (5), and the intelligent distribution box module (4) comprises an intelligent power meter and a controller and is used for counting the power consumption condition used by the load module (5) and setting a feeding priority sequence;

the input end of the energy storage module (2) is electrically connected with the photovoltaic power generation module (1) and is connected with the intelligent distribution box module (4), the power utilization priority order is controlled through the intelligent distribution box module (4), the intelligent distribution box module (4) preferentially supplies the electric energy generated by the photovoltaic power generation module (1) to the load module (5) for use, and redundant direct current/Direct Current (DC) electricity is stored in the energy storage module (2) after the load module (5) is used;

the output end of the energy storage module (2) is electrically connected with the converter module (3) and is used for converting the stored direct current/DC power into alternating current/AC power for the load module (5) to use through the converter module (3) when the photovoltaic power generation module (1) cannot generate electric energy or the generated electric energy is insufficient.

2. The energy-storage photovoltaic power generation system applicable to town communities according to claim 1, characterized in that the photovoltaic power generation system further comprises a utility grid module (6), the utility grid module (6) is in bidirectional electrical connection with the intelligent distribution box module (4), and the intelligent distribution box module (4) is used for counting and controlling the power condition of the photovoltaic power generation system feeding the utility grid module (6) or the utility grid module (6) to the load module (5).

3. The energy-storage photovoltaic power generation system applicable to town communities according to claim 2, wherein the priority order of power distribution of the intelligent distribution box module (4) is as follows: the system comprises a first priority load module (5), a second priority energy storage module (2) and a third priority municipal power grid module (6).

4. An energy-storing photovoltaic power generation system suitable for town communities according to claim 1, characterized in that the converter module (3) is a DC-AC energy-storing inverter;

the load module (5) comprises an emergency load (51) and other loads (52), the emergency load (51) is directly connected to an emergency power supply output port arranged on the DC-AC energy storage inverter, and the other loads (52) are electrically connected with the intelligent distribution box module (4).

5. An energy-storage photovoltaic power generation system suitable for town communities as defined in claim 1 wherein the energy-storage module (2) comprises a battery management system (21) and an energy-storage battery pack (22), the battery management system (21) is used for intelligently managing and maintaining each battery unit in the energy-storage battery pack (22) to prevent overcharging and overdischarging of the battery.

6. An energy-storing photovoltaic power generation system suitable for town communities as defined in claim 1 wherein the photovoltaic power generation module (1) comprises a photovoltaic panel (11) for converting light energy into electric energy and a bracket (12) for mounting the photovoltaic panel (11), the bracket (12) being mounted on the outside of the balcony wall of the building.

7. An energy-storing photovoltaic power generation system suitable for town communities as defined in claim 6 wherein the energy-storing module (2) and the converter module (3) are fixedly mounted on the inner bearing wall of the balcony.

8. The energy storage type photovoltaic power generation system suitable for the town community as claimed in claim 6, wherein the support (12) comprises a rear upright (121) vertically fixed on the balcony wall of the building, a cross bar (122) with a guide rail is transversely fixed at the bottom of the rear upright (121), a front upright (123) is slidably arranged on the cross bar (122), the front upright (123) is of a telescopic sleeve structure, and a sliding block is arranged at the bottom of the front upright (123) and is matched with the guide rail of the cross bar (122);

the support (12) further comprises an inclined plate (124), two ends of the inclined plate (124) are hinged to the tops of the front upright post (123) and the rear upright post (121) respectively, and the photovoltaic panel (11) is fixedly arranged on the surface of the inclined plate (124).

9. The energy storage type photovoltaic power generation system suitable for the town community as claimed in claim 8, wherein the telescopic sleeve structure comprises an outer tube (1231) and an inner sleeve (1232) sleeved in the inner cavity of the outer tube (1231);

a plurality of through holes (12311) are formed in the outer wall of the outer tube (1231) at intervals in the axial direction, elastic top pillars (12321) are fixedly arranged on the inner tube (1232), and the height of the front upright post (123) is adjusted through cooperation of the elastic top pillars (12321) and different through holes (12311), so that the irradiation angle of the photovoltaic panel (11) is adjusted.

10. An energy-storing photovoltaic power generation system suitable for town communities as defined in claim 6 wherein the photovoltaic panel (11) is a single crystal photovoltaic module.

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