CN217935476U - Alternating current-direct current conversion device and photovoltaic power supply system - Google Patents
Alternating current-direct current conversion device and photovoltaic power supply system Download PDFInfo
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Abstract
The utility model discloses an alternating current-direct current conversion equipment and photovoltaic power supply system. The AC/DC conversion device includes: the photovoltaic power generation system comprises a mains supply input end, a photovoltaic input end, an alternating current output end, a direct current output end and a first input control module, wherein the first input control module is connected with the mains supply input end; the second input control module is connected with the photovoltaic input end; the first output control module is connected with the alternating current output end; the second output control module is connected with the direct current output end; the first input control module is connected with the first output control module and the second output control module respectively, and the second input control module is connected with the first output control module and the second output control module respectively. The utility model provides an alternating current-direct current conversion equipment is provided with direct current output end, can export alternating current and direct current and make its application scope more extensive, and it is also more convenient to use. Moreover, direct current can be directly output, external conversion is not needed, energy loss can be avoided, and the electric energy efficiency is improved.
Description
Technical Field
The utility model relates to a current conversion technical field, more particularly, the utility model relates to an alternating current-direct current conversion equipment and photovoltaic power supply system.
Background
With the progress and development of society, the demand of people on electricity is continuously increased, the new energy industry is rapidly developed in recent years, new energy such as photovoltaic and the like is more and more utilized, but the photovoltaic energy is greatly influenced by illumination time and intensity and is often required to be combined with commercial power for use. Inverters are becoming more and more important in the field of new energy resources as core devices for converting direct current provided by Solar modules into alternating current for civil or industrial use. However, the existing inverter only has alternating current output and can directly supply power to alternating current. If a direct current LOAD (DC LOAD) needs to be supplied with power, the conversion of AC (alternating current) -DC (direct current) needs to be added, so that the conversion of the module AC-DC is additionally added, the user cost is increased, the electric energy use efficiency is reduced, and the application of photovoltaic energy is limited.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the direct current output power supply is provided with the direct current conversion device, and the direct current output power supply is provided with the photovoltaic power supply system, and the direct current output power supply is provided with the direct current output power supply.
In order to achieve the above technical object, the first aspect of the present invention discloses an ac/dc converter, including: a mains input, a photovoltaic input, an ac output and a dc output, and,
the first input control module is connected with the commercial power input end;
the second input control module is connected with the photovoltaic input end;
the first output control module is connected with the alternating current output end;
the second output control module is connected with the direct current output end; wherein,
the first input control module is respectively connected with the first output control module and the second output control module,
the second input control module is respectively connected with the first output control module and the second output control module.
Furthermore, the commercial power input end is also connected with a bypass switch, the bypass switch is connected with the first input control module in parallel, the bypass switch is connected with the alternating current output end,
the bypass switch is further connected with a third output control module, and the third output control module is connected with the direct current output end.
Furthermore, the AC/DC conversion device also comprises a charging module, the charging module comprises two charging input ends and a charging output end,
the first input control module and the second input control module are respectively connected with one charging input end.
Further, the ac-dc conversion device further includes a battery input port, and the battery input port is connected to the first output control module and the second output control module.
Further, the alternating current-direct current conversion device further comprises a controller, and the controller is connected with the first input control module, the second input control module and the charging module.
Further, the controller comprises an input module, and the input module is used for inputting a control instruction to the controller.
The utility model discloses the second aspect discloses a photovoltaic power supply system, including photovoltaic module, commercial power supply end and AC-DC conversion equipment, AC-DC conversion equipment includes:
a mains input, a photovoltaic input, an ac output and a dc output, and,
the first input control module is connected with the commercial power input end;
the second input control module is connected with the photovoltaic input end;
the first output control module is connected with the alternating current output end;
the second output control module is connected with the direct current output end; wherein,
the first input control module is respectively connected with the first output control module and the second output control module,
the second input control module is respectively connected with the first output control module and the second output control module;
the utility power supply end is connected with the utility power input end, and the photovoltaic module is connected with the photovoltaic input end.
Furthermore, the ac-dc converter further comprises a charging module, the charging module comprises two charging input ends and a charging output end, and the first input control module and the second input control module are respectively connected with one charging input end;
the alternating current-direct current conversion device further comprises a battery input port, and the battery input port is connected with the first output control module and the second output control module;
the photovoltaic power supply system further comprises a battery pack, a charging end of the battery pack is connected with the charging module, and a power supply end of the battery pack is connected with the battery input port.
Furthermore, the commercial power input end is also connected with a bypass switch, the bypass switch is connected with the first input control module in parallel, the bypass switch is connected with the alternating current output end,
the bypass switch is further connected with a third output control module, and the third output control module is connected with the direct current output end.
Further, the ac-dc converter further includes a controller, and the controller is connected to the first input control module, the second input control module, the bypass switch, and the charging module.
The beneficial effects of the utility model are that:
the utility model provides an alternating current-direct current conversion device is provided with direct current output end, can export alternating current and direct current and make its application scope more extensive, and it is also more convenient to use. Moreover, direct current can be directly output, external conversion is not needed, energy loss can be avoided, and the electric energy efficiency is improved.
Drawings
Fig. 1 is a schematic structural diagram of an ac-dc converter according to an embodiment of the present invention;
fig. 2 shows the utility model discloses photovoltaic power supply system's schematic structure diagram.
In the figure, the position of the upper end of the main shaft,
1. a mains supply input end; 2. a photovoltaic input; 3. an alternating current output end; 4. a DC output terminal; 5. a first input control module; 6. a second input control module; 7. a first output control module; 8. a second output control module; 9. a bypass switch; 10. a third output control module; 11. a charging module; 12. a battery pack is provided.
Detailed Description
The ac/dc conversion device and the photovoltaic power supply system provided by the present invention are explained and illustrated in detail below with reference to the accompanying drawings.
The utility model provides an alternating current-direct current conversion equipment is provided with direct current output end, can export alternating current and direct current and make its application scope more extensive, and it is also more convenient to use. Moreover, direct current can be directly output, external conversion is not needed, energy loss can be avoided, and the electric energy efficiency is improved. The following detailed description of the present invention is provided in connection with the following embodiments:
as shown in fig. 1, the utility model provides an ac-dc converter, include: commercial power input 1, photovoltaic input 2, alternating current output 3 and direct current output 4, commercial power input 1 is used for connecting the commercial power supply network, and photovoltaic input 2 is used for connecting photovoltaic power generation device, and alternating current output 3 and direct current output 4 are used for supplying power to alternating load and direct current load respectively, and preferably, the alternating load includes: washing machines, desktop computers, air conditioners, and other electrical appliances; the direct current load comprises a direct current lighting system, a notebook computer, a direct current air conditioner and other electrical equipment.
The ac-dc conversion device further includes: the first input control module 5 is connected with the commercial power input end 1, optionally, the first input control module 5 is an AC-DC module and converts an alternating current power supply; the second input control module 6 is connected with the photovoltaic input end 2, optionally, the second input control module 6 is a DC-DC module and controls the photovoltaic input power supply; the first output control module 7 is connected with the alternating current output end 3 and controls alternating current output, and optionally, the first output control module 7 is a DC-AC module and outputs direct current converted alternating current to an alternating current load through the alternating current output end 3; and the second output control module 8 is connected with the direct current output end 4, and optionally, the second output control module 8 can be a direct current switch, a direct current contactor, a DC-DC module and the like, and is used for directly outputting the direct current power supply of the photovoltaic input and the direct current power supply converted by the first input control module 5 in the market to a direct current load.
The first input control module 5 is respectively connected with the first output control module 7 and the second output control module 8, and the second input control module 6 is respectively connected with the first output control module 7 and the second output control module 8, so that alternating current input by commercial power and direct current input by photovoltaic can be respectively processed by the first output control module 7 and the second output control module 8 and then output.
Optionally, the utility power input end 1 is further connected with a bypass switch 9, the bypass switch 9 is connected in parallel with the first input control module 5, the bypass switch 9 is connected with the ac output end 3, when the ac-dc conversion device is abnormal in operation, such as overload, over-temperature fault or power on/off, the bypass switch 9 is turned on, the utility power can be directly output through the ac output end 3 through the bypass switch 9, and it is ensured that a stable and reliable ac output power supply can be provided through utility power input. The bypass switch 9 is further connected with a third output control module 10, and the third output control module 10 is connected with the direct current output terminal 4. In one embodiment, the third output control module 10 is an AC-DC module, when the AC-DC converter is abnormal, such as overload, over-temperature fault or power on/off, the bypass switch 9 is turned on, and the third output control module 10 can convert the AC power output by the utility power into DC power and output the DC power directly through the DC output terminal 4, so as to ensure that a stable and reliable DC output power can be provided through the utility power input.
Optionally, the ac-dc converter further includes a charging module 11, the charging module 11 includes two charging input terminals and a charging output terminal, and the first input control module 5 and the second input control module 6 are respectively connected to one charging input terminal. The function that commercial power or photovoltaic power generation charge for the storage battery can be realized through the charging module 11, the utilization scene of electric energy is further enriched, and the commercial power charging or the photovoltaic charging can be selected.
Further, the ac-dc conversion device further includes a battery input port, and the battery input port is connected with the first output control module 7 and the second output control module 8. The battery input port can be connected with a storage battery, and the storage battery provides direct current output or alternating current output to supply power for corresponding loads, so that normal power supply can be guaranteed when commercial power and photovoltaic faults occur, and power guarantee is provided.
The alternating current-direct current conversion device further comprises a controller, the controller is connected with the first input control module 5, the second input control module 6 and the charging module 11, the controller comprises an input module, the input module is used for inputting control instructions to the controller, and the input module can be a touch screen or a key panel and the like. Optionally, the user may input a control command through the input module to switch the commercial power input and the photovoltaic input, change the power supply type, or switch the charging source through the input module, control the charging time, and the like.
The utility model provides a AC-DC conversion device increases second output control module 8 and DC output end 4, can the direct current of direct output supply DC load use. Therefore, a user can supply power for the direct current load without additionally adding an AC-DC module when using the system, the electric energy efficiency is improved, direct current is directly provided by the system without conversion, and the electric energy lost by conversion is saved.
As shown in fig. 2, the utility model also provides a photovoltaic power supply system, including photovoltaic module, commercial power supply end and above-mentioned ac-dc converter, ac-dc converter includes: the photovoltaic power generation system comprises a mains supply input end 1, a photovoltaic input end 2, an alternating current output end 3, a direct current output end 4 and a first input control module 5, wherein the first input control module 5 is connected with the mains supply input end 1; the second input control module 6 is connected with the photovoltaic input end 2; the first output control module 7 is connected with the alternating current output end 3; the second output control module 8 is connected with the direct current output end 4; the first input control module 5 is respectively connected with the first output control module 7 and the second output control module 8, and the second input control module 6 is respectively connected with the first output control module 7 and the second output control module 8; the commercial power supply end is connected with commercial power input end 1, and photovoltaic module is connected with photovoltaic input end 2. The utility power input end 1 is further connected with a bypass switch 9, the bypass switch 9 is connected with the first input control module 5 in parallel, the bypass switch 9 is connected with the alternating current output end 3, the bypass switch 9 is further connected with a third output control module 10, and the third output control module 10 is connected with the direct current output end 4. When the ac-dc converter is out of order, such as overload, over-temperature fault or power on/off, the bypass switch 9 is turned on, so that the ac output terminal 3 or the dc output terminal 4 can be supplied with power through the utility power, and normal power supply can be ensured through the utility power input.
The alternating current-direct current conversion device also comprises a charging module 11 which can charge a storage battery, the charging module 11 comprises two charging input ends and a charging output end, and the first input control module 5 and the second input control module 6 are respectively connected with one charging input end; the alternating current-direct current conversion device also comprises a battery input port, and the battery input port is connected with the first output control module 7 and the second output control module 8; the photovoltaic power supply system further comprises a battery assembly 12, a charging end of the battery assembly 12 is connected with the charging module 11, and a power supply end of the battery assembly 12 is connected with the battery input port. The battery pack 12 can be charged by commercial power and photovoltaic power supply, and can provide direct current output or alternating current output for supplying power to corresponding loads through the storage battery, so that normal power supply can be ensured when the commercial power and the photovoltaic are in failure, and power guarantee is provided.
The utility model discloses photovoltaic power supply system has multiple mode according to operational environment's change, specifically includes:
1. sunlight is sufficient in daytime, and under the normal condition of commercial power: PV (Photovoltaic) solar electric energy (namely Photovoltaic input) passes through the second input control module 6 to the maximum power supply state, and the solar energy charges the battery assembly 12 and can supply the AC load and the DC load for use through the first output control module 7 and the second output control module 8 according to requirements. In this mode, the mains is in standby mode and no power input is provided.
2. When insufficient light is present (at night or in rainy weather): when the battery assembly 12 is in a sufficient energy state, the controller enables the battery assembly 12 to be powered, and the alternating current load and the direct current load are supplied for use through the first output control module 7 and the second output control module 8 according to requirements. The mains supply is in a standby state and does not provide a power input. When the energy of the battery pack 12 is insufficient and the commercial power is normal: the system is powered by the battery assembly 12 firstly, when the battery assembly 12 discharges to a set value, optionally, the set value is 10% -15% of the electric quantity of the battery assembly 12, the controller controls automatic switching to the commercial power, and power is supplied through the first input control module 5 in the market. Optionally, at this time, the user can select whether to charge the battery assembly 12 immediately through the input module of the controller, and on the other hand, the battery assembly is supplied to the ac load and the dc load through the first output control module 7 and the second output control module 8 according to the requirement.
3. When the light is insufficient (at night or in rainy days), no commercial power is available and the battery pack 12 is discharged, and power cannot be supplied at this time. After the commercial power is recovered: the system can supply alternating current load and direct current load for use through a first input control module 5 in the city and a first output control module 7 and a second output control module 8 according to the requirement by commercial power, and meanwhile, a charging module 11 can be started to timely supplement and charge a battery assembly 12.
The utility model provides a photovoltaic power supply system has integrateed photovoltaic power supply, mains supply and the power supply of battery pack 12, makes it can furthest guarantee normal power supply. And can realize switching between various power supply modes through controller automatic control or user manual operation to can accomplish make full use of photovoltaic power supply, make clean energy utilization ratio higher.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
In the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the description of the present specification, reference to the description of the terms "this embodiment," "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any at least one embodiment or example. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
The above is only a preferred embodiment of the present invention, and should not be limited to the present invention, and any modifications, equivalent replacements, simple improvements and the like made in the spirit of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An ac-dc converter, comprising: a mains input, a photovoltaic input, an ac output and a dc output, and,
the first input control module is connected with the commercial power input end;
the second input control module is connected with the photovoltaic input end;
the first output control module is connected with the alternating current output end;
the second output control module is connected with the direct current output end; wherein,
the first input control module is respectively connected with the first output control module and the second output control module,
the second input control module is respectively connected with the first output control module and the second output control module.
2. The apparatus according to claim 1, wherein a bypass switch is connected to said commercial power input end, said bypass switch is connected to said first input control module in parallel, said bypass switch is connected to said AC output end,
the bypass switch is further connected with a third output control module, and the third output control module is connected with the direct current output end.
3. The AC-DC converter according to claim 2, wherein said AC-DC converter further comprises a charging module, said charging module comprises two charging input terminals and a charging output terminal,
the first input control module and the second input control module are respectively connected with one charging input end.
4. The ac-dc conversion device according to claim 3, further comprising a battery input port connected to the first output control module and the second output control module.
5. The AC-DC conversion device according to claim 3, further comprising a controller connected to the first input control module, the second input control module and the charging module.
6. The AC-DC conversion device according to claim 5, wherein said controller comprises an input module for inputting control commands to said controller.
7. The utility model provides a photovoltaic power supply system which characterized in that, includes photovoltaic module, commercial power supply end and AC-DC conversion equipment, AC-DC conversion equipment includes:
a mains input, a photovoltaic input, an ac output and a dc output, and,
the first input control module is connected with the commercial power input end;
the second input control module is connected with the photovoltaic input end;
the first output control module is connected with the alternating current output end;
the second output control module is connected with the direct current output end; wherein,
the first input control module is respectively connected with the first output control module and the second output control module,
the second input control module is respectively connected with the first output control module and the second output control module;
the utility power supply end is connected with the utility power input end, and the photovoltaic module is connected with the photovoltaic input end.
8. The photovoltaic power supply system according to claim 7, wherein the ac-dc converter further comprises a charging module, the charging module comprises two charging input terminals and a charging output terminal, and the first input control module and the second input control module are respectively connected to one of the charging input terminals;
the alternating current-direct current conversion device also comprises a battery input port, and the battery input port is connected with the first output control module and the second output control module;
the photovoltaic power supply system further comprises a battery assembly, a charging end of the battery assembly is connected with the charging module, and a power supply end of the battery assembly is connected with the battery input port.
9. The photovoltaic power supply system according to claim 8, wherein a bypass switch is further connected to the utility power input end, the bypass switch is connected in parallel with the first input control module, the bypass switch is connected to the AC output end,
the bypass switch is further connected with a third output control module, and the third output control module is connected with the direct current output end.
10. The pv power supply system of claim 9 wherein the ac-dc converter further comprises a controller, the controller being coupled to the first input control module, the second input control module, the bypass switch, and the charging module.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221879020.7U CN217935476U (en) | 2022-07-19 | 2022-07-19 | Alternating current-direct current conversion device and photovoltaic power supply system |
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| CN202221879020.7U CN217935476U (en) | 2022-07-19 | 2022-07-19 | Alternating current-direct current conversion device and photovoltaic power supply system |
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