CN111395931A - Photovoltaic sun shading device and control method thereof - Google Patents
Photovoltaic sun shading device and control method thereof Download PDFInfo
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- CN111395931A CN111395931A CN202010296106.6A CN202010296106A CN111395931A CN 111395931 A CN111395931 A CN 111395931A CN 202010296106 A CN202010296106 A CN 202010296106A CN 111395931 A CN111395931 A CN 111395931A
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- 238000000034 method Methods 0.000 title claims abstract description 19
- 230000005540 biological transmission Effects 0.000 claims abstract description 22
- 230000007246 mechanism Effects 0.000 claims abstract description 19
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- 238000004378 air conditioning Methods 0.000 claims description 41
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- 238000009434 installation Methods 0.000 claims 1
- 238000010248 power generation Methods 0.000 abstract description 8
- 230000005855 radiation Effects 0.000 description 8
- 238000009423 ventilation Methods 0.000 description 8
- 230000001965 increasing effect Effects 0.000 description 6
- 230000014509 gene expression Effects 0.000 description 5
- 230000017525 heat dissipation Effects 0.000 description 5
- 238000004321 preservation Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
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- 239000011521 glass Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 230000004313 glare Effects 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
- E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
- E06B9/26—Lamellar or like blinds, e.g. venetian blinds
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
- E04D13/03—Sky-lights; Domes; Ventilating sky-lights
- E04D13/0325—Sky-lights; Domes; Ventilating sky-lights provided with ventilating means
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
- E04D13/03—Sky-lights; Domes; Ventilating sky-lights
- E04D13/033—Sky-lights; Domes; Ventilating sky-lights provided with means for controlling the light-transmission or the heat-reflection, (e.g. shields, reflectors, cleaning devices)
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- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B7/00—Special arrangements or measures in connection with doors or windows
- E06B7/02—Special arrangements or measures in connection with doors or windows for providing ventilation, e.g. through double windows; Arrangement of ventilation roses
- E06B7/08—Louvre doors, windows or grilles
- E06B7/084—Louvre doors, windows or grilles with rotatable lamellae
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- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B7/00—Special arrangements or measures in connection with doors or windows
- E06B7/28—Other arrangements on doors or windows, e.g. door-plates, windows adapted to carry plants, hooks for window cleaners
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
- E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
- E06B9/26—Lamellar or like blinds, e.g. venetian blinds
- E06B9/38—Other details
- E06B9/386—Details of lamellae
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S20/00—Supporting structures for PV modules
- H02S20/30—Supporting structures being movable or adjustable, e.g. for angle adjustment
- H02S20/32—Supporting structures being movable or adjustable, e.g. for angle adjustment specially adapted for solar tracking
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Architecture (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Photovoltaic Devices (AREA)
Abstract
The invention provides a photovoltaic sunshade device and a control method thereof, wherein the device comprises an equipment frame, a photovoltaic sunshade integrated panel, a driving motor, a worm transmission mechanism and a controller; the equipment frame is formed by enclosing sectional materials, and the middle of the equipment frame is of a hollow structure; the photovoltaic sunshade integrated panel is arranged in the hollow structure; the driving motor is arranged on the equipment frame; the worm transmission mechanism is arranged in the equipment frame and is connected with the photovoltaic sunshade integrated panel and the driving motor; the controller is connected with the driving motor. The controller can automatically optimize and adjust in real time according to real-time conditions such as sun shading, lighting, fire alarming and the like and maximization of the power generation efficiency of the photovoltaic module, so that the performance of a product and the comfort of a user are improved; the product does not need a photosensitive sensor or a temperature sensor, so that the performance of the product is more stable; the worm drive is mounted inside the equipment frame so that the equipment frame protects the worm drive.
Description
Technical Field
The invention relates to the field of buildings, in particular to a photovoltaic sun-shading device and a control method thereof.
Background
The architectural lighting skylight is widely applied to exhibition halls and roof layers of various public buildings such as commercial buildings, exhibition buildings, traffic buildings, multi-layer office buildings and the like, and has the advantages of improving the natural lighting in the buildings, saving the lighting energy consumption, increasing the hot-pressing ventilation potential of the buildings and the like. However, due to the arrangement of the skylight, the solar radiation entering the room can be increased to obtain heat in summer, so that the energy consumption of the air conditioner is increased; in winter, the heating energy consumption is increased due to the invasion of cold air and the increase of indoor heat dissipation; in addition, when outdoor direct light is strong, glare is easily caused, and indoor comfort is affected.
The existing patents about the photovoltaic sun-shading device applied to the building skylight basically adopt a fixed structure, and the photovoltaic sun-shading device cannot be optimally adjusted according to the change of solar radiation parameters. For example, patent application publication No. CN103669740A entitled "sunroof shade device using solar photovoltaic glass" realizes the functions of both shading and photovoltaic power generation by directly placing the photovoltaic glass in the sunroof frame, but it does not have the function of automatic adjustment according to the change of outdoor radiation parameters.
Disclosure of Invention
The invention provides a photovoltaic sun-shading device and a control method thereof, and aims to solve the technical problem that the conventional photovoltaic sun-shading device does not have the function of automatic adjustment according to outdoor radiation parameter change.
In order to solve the technical problem, the invention provides a photovoltaic sunshade device, which comprises an equipment frame, a photovoltaic sunshade integrated panel, a driving motor, a worm transmission mechanism and a controller, wherein the equipment frame is provided with a photovoltaic sunshade integrated panel;
the equipment frame is formed by enclosing sectional materials, and the middle of the equipment frame is of a hollow structure; (ii) a
The photovoltaic sunshade integrated panel is installed in the hollow structure;
the driving motor is arranged on the equipment frame;
the worm transmission mechanism is arranged in the hollow structure and is connected with the photovoltaic sunshade integrated panel and the driving motor;
the controller is connected with the driving motor.
Optionally, the photovoltaic sunshade integrated panel comprises a solar cell panel and rotating shafts fixed at two ends of the solar cell panel; the worm transmission mechanism comprises a worm, a worm wheel and a coupler; a bearing is arranged on the inner side of the equipment frame;
the driving motor is connected with the coupler; the coupler is connected with the worm; the worm is meshed with the worm wheel; the rotating shaft passes through the bearing and is connected with the turbine.
Optionally, the device frame is shaped as a hollow cube structure.
Optionally, the hollow cube structure includes a first frame, a second frame, a third frame and a fourth frame, where the first frame is parallel to the second frame, and the third frame is parallel to the fourth frame; (ii) a The first frame, the second frame, the third frame and the fourth frame are all hollow sections; the worm transmission structure is arranged in the hollow first frame; the first frame, the third frame, the second frame and the fourth frame are sequentially connected to form the hollow structure in an enclosing manner;
the worm, the worm wheel and the coupler are all arranged on the inner side of the first frame; the bearings are symmetrically arranged on the inner side of the first frame and the inner side of the second frame; the controller is arranged on the inner side of the fourth frame; the driving motor is installed at the position where the first frame and the fourth frame intersect.
Optionally, the number of the photovoltaic sunshade integrated panels is multiple, and the multiple photovoltaic sunshade integrated panels are uniformly distributed in the hollow structure.
Optionally, the driving motor is a stepping motor.
The invention also provides a method for controlling the photovoltaic sun-shading device, which comprises the following steps:
s1: initializing initialization parameters of any one of the photovoltaic sun shading devices;
s2: acquiring local time information, judging whether the current mode is a daytime mode or a nighttime mode according to a preset first calculation formula, the initialization parameter and the local time information, and executing S3 if the current mode is the daytime mode;
s3: according to a preset time interval, calculating a real-time optimal inclination angle value according to a preset second calculation formula, the initialization parameter and the local time information, and adjusting the photovoltaic sunshade integrated panel to the optimal inclination angle value, wherein the optimal inclination angle is an inclination angle corresponding to the photovoltaic sunshade integrated panel when the lighting efficiency is the highest.
Optionally, the step S2 further includes: acquiring an operation mode of an air conditioning system and opening and closing information of the air conditioning system, and if the air conditioning system is in a heating mode and is in a night mode, adjusting the photovoltaic and sunshade integrated panel to a plane parallel to a plane where the equipment frame is located; if the air conditioning system is in a non-heating mode, the air conditioning system is in an open state and is in a night mode, the photovoltaic sunshade integrated panel is adjusted to a surface parallel to the plane where the equipment frame is located; and if the air conditioning system is in a non-heating mode, the air conditioning system is in a closed state and is in a night mode, the photovoltaic sunshade integrated panel is adjusted to a plane perpendicular to the plane where the equipment frame is located.
Optionally, between S1 and S2, further comprising: acquiring fire alarm information of a building where the photovoltaic sun-shading device is located, judging whether fire risks exist or not, and executing S2 if the fire risks do not exist; and if the photovoltaic sunshade integrated panel exists, adjusting the photovoltaic sunshade integrated panel to a surface vertical to the plane of the equipment frame, and cutting off a photovoltaic circuit corresponding to the photovoltaic sunshade integrated panel.
Optionally, the firstThe initialization parameters include local longitude λ and latitude
And the azimuth angle theta of the normal direction of the photovoltaic sunshade integrated panel, and the second calculation formula comprises
Wherein, βmThe optimal inclination angle value of the photovoltaic sunshade integrated panel at any moment in the daytime mode is represented in degrees; representing the solar declination angle unit obtained by calculation according to the first calculation formula, the initialization parameter and the local time information as degree; and omega represents the solar time angle calculated according to the first calculation formula, the initialization parameter and the local time information, and the unit is degree.
According to the photovoltaic sunshade device and the control method thereof, the controller can automatically optimize and adjust in real time according to real-time conditions such as sunshade, lighting, ventilation, heat preservation, fire alarm and the like and maximization of the power generation efficiency of the photovoltaic module, so that the performance of a product and the comfort of a user are improved; the product does not need a photosensitive sensor or a temperature sensor, so that the performance of the product is more stable, and the initial investment cost of equipment and the subsequent operation and maintenance cost are correspondingly reduced; and the worm drive mechanism is installed in the inboard of equipment frame, and equipment frame can protect worm drive mechanism like this to improve the life of product.
Drawings
Fig. 1 is a schematic top view of a photovoltaic sunshade device according to an embodiment of the present invention;
FIG. 2 is a schematic view of the inside of the frame of the apparatus at the point A in FIG. 1;
FIG. 3 is a schematic view of the inside of the frame of the apparatus at the point B in FIG. 1;
FIG. 4 is a flow chart of a method for controlling a photovoltaic solar protection device according to an embodiment of the present invention;
fig. 5 is a flowchart of a method for controlling a photovoltaic sunshade device according to another embodiment of the present invention.
[ reference numerals are described below ]:
1-equipment frame; 2-photovoltaic sunshade integrated panel; 3-driving a motor; 4-a rotating shaft; 5. 6-a bearing; 7-a worm; 8-a worm gear; 9-a controller; 10-coupling.
Detailed Description
To make the objects, advantages and features of the present invention more clear, a photovoltaic sunshade device and a control method thereof according to the present invention will be described in detail with reference to the accompanying drawings. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention.
As shown in fig. 1-3, the photovoltaic sunshade device provided by the present invention comprises an apparatus frame 1, a photovoltaic sunshade integrated panel 2, a driving motor 3, a worm transmission mechanism, and a controller 9; the equipment frame 1 is formed by enclosing sectional materials, and the middle of the equipment frame 1 is of a hollow structure; the photovoltaic sunshade integrated panel 2 is installed in the hollow structure; the driving motor 3 is mounted on the equipment frame 1; the worm transmission mechanism is arranged in the hollow structure and is connected with the photovoltaic sunshade integrated panel 2 and the driving motor 3; the controller 9 is connected with the driving motor 3.
According to the photovoltaic sunshade device provided by the invention, the controller 9 can automatically optimize and adjust in real time according to real-time conditions such as sunshade, lighting, ventilation, heat preservation, fire alarm and the like and the maximization of the power generation efficiency of a photovoltaic module, so that the performance of a product and the comfort of a user are improved; the product does not need a photosensitive sensor or a temperature sensor, so that the performance of the product is more stable, and the initial investment cost of equipment and the subsequent operation and maintenance cost are correspondingly reduced; and the worm drive mechanism is installed at the inside of the equipment frame 1, so that the equipment frame 1 can protect the worm drive mechanism, thereby prolonging the service life of the product. Alternatively, as shown in fig. 1, the device frame 1 is in the shape of a hollow cube structure. Specifically, the apparatus frame 1 may be a hollow rectangular parallelepiped, which facilitates processing.
Optionally, as shown in fig. 1 to fig. 3, the hollow cube structure includes a first frame, a second frame, a third frame and a fourth frame, where the first frame is parallel to the second frame, and the third frame is parallel to the fourth frame; the first frame, the second frame, the third frame and the fourth frame are all hollow sections; the worm transmission structure is arranged in the hollow first frame; the first frame, the third frame, the second frame and the fourth frame are sequentially connected to form the hollow structure in an enclosing manner; the worm 7, the worm wheel 8 and the coupler 10 are all arranged on the inner side of the first frame; the bearings are symmetrically arranged on the inner side of the first frame and the inner side of the second frame; the controller 9 is arranged on the inner side of the fourth frame; the driving motor 3 is installed at the position where the first frame and the fourth frame intersect. In fig. 1, the upper and lower sides are respectively a second frame and a first frame, and the left and right frames are respectively a third frame and a fourth frame. The inner side refers to one side of the hollow structure.
Alternatively, as shown in fig. 1 to 3, the photovoltaic sunshade integrated panel 2 includes a solar cell panel and a rotating shaft 4 fixed at both ends of the solar cell panel; the worm transmission mechanism comprises a worm 7, a worm wheel 8 and a coupler 10; bearings 5 and 6 are arranged on the inner side of the equipment frame; the driving motor 3 is connected with the coupler 10; the coupling 10 is connected with the worm 7; the worm 7 is meshed with the worm wheel; the rotating shaft 4 passes through the bearing and is connected with the turbine.
The worm 7, the worm wheel 8, the coupling 10, the bearing and the controller 9 in the embodiment of the invention are all arranged on the inner side of the equipment frame 1, so that the devices can be protected, and the service life of the product is prolonged.
The transmission mechanism adopts a worm transmission mode, and the worm transmission has the characteristics of compact structure, small impact load, stable transmission, low noise and self-locking property, so that the impact load caused by intermittent operation can be effectively reduced, the operation noise is reduced, and the stability of the photovoltaic sunshade integrated panel 2 in a static state is greatly improved. In addition, the compact structure makes the whole transmission mechanism hidden inside the frame 1 of the equipment, thus improving the aesthetic property.
Optionally, the bearing is a rolling bearing. The use of rolling bearings can reduce friction.
Optionally, as shown in fig. 1 to fig. 3, the number of the integrated pv panels 2 is multiple, and the multiple integrated pv panels 2 are uniformly distributed in the hollow structure. A plurality of photovoltaic sunshade integrated panels 2 are arranged in an equipment frame 1 in an array distribution mode, so that the lighting efficiency can be improved, and the adjustment flexibility of each photovoltaic sunshade integrated panel 2 is improved.
Optionally, the driving motor 3 is a stepping motor. The mode that step motor and worm transmission combined together is adopted, can reach 5 ~ 80 based on worm drive ratio in the power transmission, and step motor can be according to the rotatory characteristics of fixed step angle, can reduce the inclination adjustment error of photovoltaic sunshade integration panel 2 by a wide margin, compares and can reduce more than 80% regulation deviation in gear drive mode etc..
Based on the same technical concept as the photovoltaic sunshade device, the invention also provides a method for controlling the photovoltaic sunshade device, which comprises the following steps:
s1: initializing initialization parameters of the photovoltaic sun-shading device;
s2: acquiring local time information, judging whether the current mode is a daytime mode or a nighttime mode according to a preset first calculation formula, the initialization parameter and the local time information, and executing S3 if the current mode is the daytime mode; the first calculation formula may be the following formulas 1 to 4, and in specific implementation, parameters in each formula may be appropriately adjusted according to a deviation between an actual value and a theoretical value;
s3: according to a preset time interval, calculating a real-time optimal inclination angle value according to a preset second calculation formula, the initialization parameter and the local time information, and adjusting the photovoltaic sunshade integrated panel to the optimal inclination angle value, wherein the optimal inclination angle is an inclination angle corresponding to the photovoltaic sunshade integrated panel when the lighting efficiency is highest; the second calculation formula may be formula 5 below.
In the daytime, the angle of the photovoltaic sunshade integrated panel is changed in real time according to the position of the sun, so that the power generation efficiency can be improved, and indoor direct light rays can be shielded.
Optionally, the step S2 further includes: acquiring an operation mode of an air conditioning system and opening and closing information of the air conditioning system, and if the air conditioning system is in a heating mode and is in a night mode, adjusting the photovoltaic and sunshade integrated panel to a plane parallel to a plane where the equipment frame is located; if the air conditioning system is in a non-heating mode, the air conditioning system is in an open state and is in a night mode, the photovoltaic sunshade integrated panel is adjusted to a surface parallel to the plane where the equipment frame is located; and if the air conditioning system is in a non-heating mode, the air conditioning system is in a closed state and is in a night mode, the photovoltaic sunshade integrated panel is adjusted to a plane perpendicular to the plane where the equipment frame is located.
The photovoltaic sun-shading device provided by the invention can be applied to the outer side of the skylight, and a certain ventilation gap exists between the photovoltaic sun-shading integrated panel and the skylight glass, so that the ventilation and heat dissipation effects of the photovoltaic module are better; compared with the technical scheme that the photovoltaic light-transmitting assembly is directly used as skylight glass, the photovoltaic light-transmitting assembly can be used for improving the power generation efficiency of the photovoltaic assembly by more than 20 percent and effectively avoiding the influence of the heat dissipation of the photovoltaic assembly on the load of an indoor air conditioner. At night in winter, the air conditioning system is in a heating mode, but no people are in the room, so that the air conditioning equipment does not operate, but the photovoltaic sun-shading panel needs to keep a 0-degree inclination angle at the moment so as to achieve the purpose of enhancing indoor heat preservation, and therefore the initial heating energy consumption of the second sky adjusting equipment during operation is reduced. If the air conditioning system is in a non-heating mode, the air conditioning system equipment is in an open state and is in a night mode, the photovoltaic sunshade integrated panel is adjusted to a plane parallel to the plane where the equipment frame is located, and therefore the purpose of increasing the skylight radiation thermal resistance and further reducing the air conditioning cold loss is achieved; if the air conditioning system is in a non-heating mode, the air conditioning system equipment is in a closed state and is in a night mode, the photovoltaic sunshade integrated panel is adjusted to a plane perpendicular to a plane where the equipment frame is located, and therefore the effects of indoor radiation heat dissipation and natural ventilation are enhanced. Optionally, between S1 and S2, further comprising: acquiring fire alarm information of a building where the photovoltaic sun-shading device is located, judging whether fire risks exist or not, and executing S2 if the fire risks do not exist; if the photovoltaic sunshade integrated panel 2 exists, the photovoltaic sunshade integrated panel 2 is adjusted to a plane perpendicular to the plane of the equipment frame 1, and a photovoltaic circuit corresponding to the photovoltaic sunshade integrated panel 2 is cut off.
Photovoltaic solar protection devices can establish data connection through wired or wireless mode and architectural equipment management system, and architectural equipment management system can give photovoltaic solar protection devices with the novel transmission of this building fire alarm, if the conflagration condition takes place, photovoltaic solar protection devices can adjust photovoltaic sunshade integration panel 2 to open state completely to cut off photovoltaic circuit, accelerate indoor flue gas circulation like this, prevent that photovoltaic solar protection devices from catching fire.
Optionally, the initialization parameter includes a local longitude λ and a latitude
And the azimuth angle theta of the normal direction of the photovoltaic sunshade integrated panel 2, and the second calculation formula comprises
Wherein, βmThe optimal inclination angle value of the photovoltaic sunshade integrated panel 2 at any time in the daytime mode is represented in degrees; representing the solar declination angle unit obtained by calculation according to a first calculation formula, the initialization parameter and the local time information as degree; and omega represents the solar time angle calculated according to the first calculation formula, the initialization parameter and the local time information, and the unit is degree.
In particular, another embodiment of the present invention provides a flow chart of a method for controlling a photovoltaic solar protection device, as shown in fig. 2 and 5,the controller 9 can synchronously acquire local time information, fire alarm information and operation condition information of the air conditioning system fed back by the building equipment management system; and according to the received local time information and the local longitude lambda and latitude inputted at the time of initial setting
And the azimuth angle theta of the normal direction of the integrated photovoltaic sunshade panel 2 can be calculated to obtain the sunrise time Tr of the day, the sunset time Ts of the day and the optimal inclination angle β of the integrated photovoltaic sunshade panel 2 at any moment in the daytime mode of the daymThe controller 9 can preferentially judge whether a fire exists or not, if the fire exists, the controller enters a fire protection mode, namely the inclination angle β of the integrated photovoltaic sunshade panel is adjusted to be in a 90-degree state and the photovoltaic circuit is cut off, if no fire exists, the controller compares the local standard time t with the sunrise time Tr and the sunset time Ts of the day to judge whether the current mode is a daytime mode or a nighttime mode, if Tr is less than or equal to t and less than Ts, the controller is in the daytime mode, and the inclination angle β of the integrated photovoltaic sunshade panel 2 needs to be adjusted to be β according to the optimal value fed back by the controller 9 in the daytime modemThe method comprises the steps of carrying out real-time automatic adjustment, judging whether an air-conditioning system is in a heating mode or not in a night mode, adjusting the inclination angle β of the photovoltaic sunshade integrated panel 2 to be in a 0-degree state if the air-conditioning system is in the heating mode, judging the running state of the air-conditioning system if the air-conditioning system is not in the heating mode, adjusting the inclination angle β of the photovoltaic sunshade integrated panel 2 to be in a 0-degree state if the air-conditioning system is in the running state, and adjusting the inclination angle β of the photovoltaic sunshade integrated panel 2 to be in a 90-degree state if the air-conditioning system is in a closed state, wherein Tr, Ts and βmAnd other relevant parameters can be found from the following relationships:
(1) solar declination angle expression:
wherein-solar declination angle, in °; n is the number of days in a year of the day of the feedback from the construction equipment management system, for example, 1 month and 1 day is 1;
(2) the expression of the solar time angle omega (the expressions 2-5 are only applicable to China areas adopting Beijing time at standard time):
ω 15 × t + λ -300 (formula 2)
Wherein, omega-solar time angle, unit is degree; t is the local standard fed back by the construction equipment management system, and the unit is h; λ — local longitude, in degrees, entered at initialization setting;
(3) sunrise time Tr expression:
wherein Tr is sunrise time and the unit is h; -solar declination angle calculated from (formula 1) in °;
-local latitude entered at initial setup in °; λ — local longitude, in degrees, entered at initialization setting;
(4) the sunset time Ts expression:
wherein Ts is sunset time, and the unit is h; -solar declination angle calculated from (formula 1) in °;
-local latitude entered at initial setup in °; λ — local longitude, in degrees, entered at initialization setting;
(5) optimum inclination angle β of photovoltaic sunshade integrated panel 2 at any time in daytime modemExpression:
wherein, βmThe optimal inclination angle of the photovoltaic sunshade integrated panel 2 at any moment in the daytime mode is in degrees; -solar declination angle calculated from (formula 1) in °;
-local latitude entered at initial setup in °; omega-solar hour angle calculated from (formula 2) in degrees; theta is the azimuth angle of the normal direction of the photovoltaic sunshade integrated panel 2 input during initial setting, and the unit is.
The formula 5 provided by the embodiment can accurately calculate the optimal inclination angle of the photovoltaic sunshade integrated panel 2 at any time in the daytime mode, so that the power generation efficiency is improved. For the areas not adopting Beijing time, the formulas 2 to 5 need to be adjusted correspondingly.
The different operation modes and operation switching conditions of the embodiment of the invention are specifically as follows:
1. daytime mode:
when the controller 9 does not receive the fire alarm signal fed back by the building equipment management system and the local standard t is between the sunrise time Tr and the sunset time Ts, the embodiment of the invention switches to the daytime mode operation, and the controller 9 feeds back the optimal inclination angle β of the integrated photovoltaic sunshade panel 2 at the moment every half hour (or other time intervals)mAnd controlling the driving motor 3 to adjust the inclination angle β of the photovoltaic sunshade integrated panel 2 to β through the worm 7, the worm wheel 8 and the rotating shaft 4mIn daylight mode, the above process is repeated to achieve a real-time optimal adjustment of the inclination β of the integrated photovoltaic sunshade panel 2.
2. Night mode:
when the controller 9 does not receive the fire alarm signal fed back by the construction equipment management system and the local standard t is smaller than the sunrise time Tr of the day or larger than the sunset time Ts, the embodiment of the present invention switches to the night mode operation. And the specific operating conditions of the night mode are as follows:
1) when the building equipment management system feeds back that the air conditioning system is in a heating mode, the controller 9 controls the driving motor 3 to adjust the inclination angle β of the photovoltaic sunshade integrated panel 2 to 0 degree through the worm 7, the worm wheel 8 and the rotating shaft 4 so as to achieve the purpose of strengthening the heat preservation performance of the skylight;
2) when the building equipment management system feeds back that the air conditioning system is not in a heating mode and the air conditioning tail end equipment is in an opening state, the controller 9 controls the driving motor 3 to adjust the inclination angle β of the photovoltaic sunshade integrated panel 2 to 0 degree through the worm 7, the worm wheel 8 and the rotating shaft 4 so as to achieve the purpose of increasing the thermal radiation resistance and further reducing the loss of the air conditioning cold quantity;
3) when the building equipment management system feeds back that the air conditioning system is not in a heating mode and the air conditioning terminal equipment is in a closed state at the moment, the controller 9 controls the driving motor 3 to adjust the inclination angle β of the photovoltaic sunshade integrated panel 2 to 90 degrees through the worm 7, the worm wheel 8 and the rotating shaft 4 so as to achieve the effects of strengthening indoor radiation heat dissipation and natural ventilation.3, a fire fighting mode:
when receiving a fire alarm signal fed back by a building equipment management system, the controller 9 switches to a fire-fighting mode for operation, sends a control signal for disconnecting the photovoltaic module circuit to the building equipment management system and controls the driving motor 3 to adjust the inclination angle β of the photovoltaic sunshade integrated panel 2 to 90 degrees through the worm 7, the worm wheel 8 and the rotating shaft 4, so that the effects of not influencing smoke discharge of a skylight and preventing the photovoltaic module circuit from firing are achieved.
In summary, according to the photovoltaic sunshade device and the control method thereof provided by the invention, the controller can automatically optimize and adjust in real time according to real-time conditions such as sunshade, lighting, ventilation, heat preservation, fire alarm and the like and maximization of the power generation efficiency of the photovoltaic module, so that the performance of a product and the comfort level of a user are improved; the product does not need a photosensitive sensor or a temperature sensor, so that the performance of the product is more stable, and the initial investment cost of equipment and the subsequent operation and maintenance cost are correspondingly reduced; and the worm drive mechanism is installed at the inside of the equipment frame 1, so that the equipment frame 1 can protect the worm drive mechanism, thereby prolonging the service life of the product.
The photovoltaic solar protection devices that this scheme provided is particularly useful for building skylight, and to spacious position and building side window, this scheme is also suitable for, but some detail structure and computational formula probably need do adjustment on an adaptability ground.
The above description is only for the purpose of describing the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention, and any variations and modifications made by those skilled in the art based on the above disclosure are within the scope of the claims of the present invention.
Claims (10)
1. A photovoltaic sunshade device is characterized by comprising an equipment frame, a photovoltaic sunshade integrated panel, a driving motor, a worm transmission mechanism and a controller;
the equipment frame is formed by enclosing sectional materials, and the middle of the equipment frame is of a hollow structure; the photovoltaic sunshade integrated panel is installed in the hollow structure;
the driving motor is arranged on the equipment frame;
the worm transmission mechanism is arranged in the hollow structure and is connected with the photovoltaic sunshade integrated panel and the driving motor;
the controller is connected with the driving motor.
2. The photovoltaic solar protection device as claimed in claim 1, wherein the photovoltaic solar protection integrated panel comprises a solar cell panel and a rotating shaft fixed at both ends of the solar cell panel; the worm transmission mechanism comprises a worm, a worm wheel and a coupler; a bearing is arranged on the inner side of the equipment frame;
the driving motor is connected with the coupler; the coupler is connected with the worm; the worm is meshed with the worm wheel; the rotating shaft passes through the bearing and is connected with the turbine.
3. The photovoltaic solar protection device as claimed in claim 2, wherein the equipment frame is shaped as a hollow cube.
4. The photovoltaic solar protection device according to claim 3, wherein the hollow cube structure comprises a first frame, a second frame, a third frame and a fourth frame, the first frame and the second frame are parallel, and the third frame and the fourth frame are parallel; the first frame, the second frame, the third frame and the fourth frame are all hollow sections; the worm transmission structure is arranged in the hollow first frame; the first frame, the third frame, the second frame and the fourth frame are sequentially connected to form the hollow structure in an enclosing manner;
the worm, the worm wheel and the coupler are all arranged on the inner side of the first frame; the bearings are symmetrically arranged on the inner side of the first frame and the inner side of the second frame; the controller is arranged on the inner side of the fourth frame; the driving motor is installed at the position where the first frame and the fourth frame intersect.
5. The photovoltaic solar protection device as claimed in claim 1, wherein the number of the photovoltaic solar protection integrated panels is plural, and the plural photovoltaic solar protection integrated panels are uniformly distributed in the hollow structure.
6. The photovoltaic solar protection device as claimed in claim 1, wherein the drive motor is a stepper motor.
7. A method of controlling a photovoltaic solar protection device, characterized in that it comprises the steps of:
s1: initializing initialization parameters of the photovoltaic solar protection device of any one of claims 1 to 6;
s2: acquiring local time information, judging whether the current mode is a daytime mode or a nighttime mode according to a preset first calculation formula, the initialization parameter and the local time information, and executing S3 if the current mode is the daytime mode;
s3: according to a preset time interval, calculating a real-time optimal inclination angle value according to a preset second calculation formula, the initialization parameter and the local time information, and adjusting the photovoltaic sunshade integrated panel to the optimal inclination angle value, wherein the optimal inclination angle is an inclination angle corresponding to the photovoltaic sunshade integrated panel when the lighting efficiency is the highest.
8. The method for controlling a photovoltaic solar protection device, as claimed in claim 7, wherein said step S2 further comprises: acquiring an operation mode of an air conditioning system and opening and closing information of the air conditioning system, and if the air conditioning system is in a heating mode and is in a night mode, adjusting the photovoltaic and sunshade integrated panel to a plane parallel to a plane where the equipment frame is located; if the air conditioning system is in a non-heating mode, the air conditioning system is in an open state and is in a night mode, the photovoltaic sunshade integrated panel is adjusted to a surface parallel to the plane where the equipment frame is located; and if the air conditioning system is in a non-heating mode, the air conditioning system is in a closed state and is in a night mode, the photovoltaic sunshade integrated panel is adjusted to a plane perpendicular to the plane where the equipment frame is located.
9. The method for controlling a photovoltaic solar protection device according to claim 7, further comprising between S1 and S2: acquiring fire alarm information of a building where the photovoltaic sun-shading device is located, judging whether fire risks exist or not, and executing S2 if the fire risks do not exist; and if the photovoltaic sunshade integrated panel exists, adjusting the photovoltaic sunshade integrated panel to a surface vertical to the plane of the equipment frame, and cutting off a photovoltaic circuit corresponding to the photovoltaic sunshade integrated panel.
10. Method for controlling a photovoltaic solar protection installation according to claim 7, characterized in that said initialization parameters comprise the local longitude λ and latitude
And the azimuth angle theta of the normal direction of the photovoltaic sunshade integrated panel,the second calculation formula comprises
Wherein, βmThe optimal inclination angle value of the photovoltaic sunshade integrated panel at any moment in the daytime mode is represented in degrees; representing the solar declination angle calculated according to the first calculation formula, the initialization parameter and the local time information, wherein the unit is degree; and omega represents the solar time angle calculated according to the first calculation formula, the initialization parameter and the local time information, and the unit is degree.
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| CN114006575A (en) * | 2021-11-18 | 2022-02-01 | 广东工业大学 | Solar power generation device and control method thereof |
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