Agricultural planting device coupling fluorescence and energy storage

Abstract

The application belongs to the field of agricultural ecological planting technology, and particularly relates to a fluorescence and energy storage coupled agricultural planting device, which comprises a planting pot, a support, a light condensing unit, a photovoltaic power generation unit and a heat collecting unit. The heat storage bin and the planting area are formed in the planting pot. The support is arranged on the planting pot. The light condensing unit comprises a Fresnel lens, and a fluorescent material is compounded on the Fresnel lens. The fluorescent material emits fluorescent light after being excited, and the fluorescent light can supplement the light for the growth of plants. The heat collecting unit absorbs the heat energy of sunlight through a phase change material. When sunlight irradiates on the light condensing unit, the light condensing unit can focus the light on the phase change material or the solar cell panel according to the change of the incident angle. The fluorescence and energy storage coupled agricultural planting device can reduce the energy consumption of agricultural production, optimize the plant growth environment, promote the growth of plants and improve the planting benefits.

Description

TECHNICAL FIELD

[0001] The application belongs to the field of agricultural ecological planting technology, and particularly relates to a fluorescence and energy storage coupled agricultural planting device. BACKGROUND

[0002] At present, with the vigorous development of modern agricultural planting technology, many modern agricultural planting technologies, taking agricultural greenhouse as the first, have been widely applied. Modern agricultural planting technology generally has the advantages of high yield and good economic benefit, but at the same time, modern agricultural planting technology also has the problems of large occupied area, low efficiency, large environmental temperature difference due to seasonality and diurnal nature, and the need for energy consumption to use growth lamps to stimulate plant growth at night in order to increase plant growth speed.

[0003] The sun has rich resources of light and heat, and solar energy is an important renewable energy utilization method. Photovoltaic power generation is the most important utilization method of solar power generation at present, which utilizes the photovoltaic effect of semiconductor materials to generate electricity, and this method fully utilizes the light energy resources of the sun. In addition, the heat resources of the sun also have various utilization methods, such as photothermal power generation, solar water heater, solar collector, etc. Based on the richness and wide range of solar energy resources, in order to improve the energy utilization efficiency, many attempts have been made to utilize both sunlight and heat resources, such as some photovoltaic / thermal (PV / T) composite systems and photovoltaic / thermal composite power generation system technologies.

[0004] Especially noteworthy is that in the existing field of solar photovoltaics, the application of Fresnel lenses is quite popular. Fresnel lens, also known as screw thread lens, is a microstructure optical element, whose principle is mainly based on the curvature and refraction principle of the lens surface. Light is refracted on the lens surface, and the angle of refraction is determined by the curvature of the lens surface. The curvature of the lens surface can be accurately calculated and manufactured to achieve the focusing or diffusing effect of light. The surface of the Fresnel lens is smooth on one side, and the other side is engraved with concentric circular ring lines from small to large, i.e. the screw thread surface. Each ring can be regarded as a small convex or concave lens. When light passes through the Fresnel lens, each ring will focus or diffuse the light. When the light is perpendicular to the screw thread surface of the Fresnel lens, parallel light will be focused into a point through the lens. The design of the Fresnel lens makes it effective to converge light, and compared with traditional lenses, it can reduce the loss of light and improve the efficiency of light concentration.

[0005] At present, the Fresnel lens is mainly applied in the field of solar photovoltaic. In the field of solar photovoltaic, the Fresnel lens is mainly used as a light collecting component in a concentrating photovoltaic system to convert light from a relatively large area into a relatively small area. Among them, the cheap Fresnel lens is generally made of transparent plastic by pressure casting or molding, and its size can be made larger than glass while being lighter and more economical, so large Fresnel lenses are also widely used in solar stoves to concentrate sunlight or solar water heaters.

[0006] In the context of actually applying the Fresnel lens, in order to achieve better light collecting effect, the parallel light is usually made to be perpendicular to the thread surface of the lens when using the Fresnel lens to collect light, at this time, the light intensity of the focal spot is the strongest and the light collecting effect is the best. However, when the light is not perpendicular to the thread surface of the Fresnel lens, the focal point of the light collecting will shift with the shift of the incident angle, so that the Fresnel lens will deviate from the original design scene in actual application. In order to achieve better light collecting effect and fit the application scene, a light tracking module is often added, such as in the Chinese patent with publication (announcement) number CN104663266B, in order to make the light collecting system composed of the Fresnel lens achieve better utilization of sunlight, a linkage control system is added, which is used to adjust the angle of the light splitting system according to the incident angle of the sunlight, so that at different times, the solar cell panel in the light splitting module can be at the light collecting focal plane of the Fresnel lens at a better angle. However, the light tracking module often has the defects of complex structure, large volume and high preparation cost, which greatly limits the application of the Fresnel lens.

[0007] In addition, it is found through exploration that the fluorescence emitted by the fluorescent material after excitation can supplement the light for the growth of plants, so as to improve the growth environment of crops and improve the planting benefit.

[0008] Therefore, if an agricultural planting device capable of efficiently utilizing solar light and heat resources and promoting plant growth by using fluorescent materials can be provided to reduce the energy consumption of agricultural production, optimize the plant growth environment, promote plant growth and improve the planting benefit, it will have great significance for the development of modern agricultural planting technology. SUMMARY

[0009] The purpose of the present application is to provide a fluorescent and energy storage coupled agricultural planting device to achieve the purpose of reducing the energy consumption of agricultural production, optimizing the plant growth environment, promoting plant growth and improving the planting benefit.

[0010] Therefore, the present application provides a fluorescent and energy storage coupled agricultural planting device, which comprises:

[0011] a planting pot, a heat storage compartment and a planting area are formed in the planting pot;

[0012] a support arranged on the planting pot;

[0013] a light collecting unit comprising a Fresnel lens, on which a composite fluorescent material is arranged, the fluorescent material emits fluorescent light after being excited, which can supplement the light for the growth of plants;

[0014] a photovoltaic power generation unit comprising a solar panel and an energy storage battery, under the irradiation of sunlight, the solar panel can generate electric energy and store it in the energy storage battery;

[0015] a heat collecting unit arranged in the heat storage bin, which absorbs the heat energy of sunlight through a phase change material, and releases heat to the plants in the planting area when needed;

[0016] When sunlight irradiates on the light collecting unit, the light collecting unit can focus light on the phase change material or solar panel according to the change of the incident angle, so that the agricultural planting device can store and utilize the heat energy of sunlight through the phase change material, or store and utilize the light energy of sunlight through the photovoltaic power generation unit.

[0017] Further, the heat storage bin is arranged in the central area of the planting pot, and the planting area is arranged around the periphery of the heat storage bin.

[0018] Further, a partition wall is arranged in the planting pot, which divides the space in the planting pot into the heat storage bin and the planting area.

[0019] Further, the support is in the form of an inclined annular cylindrical structure, the light collecting unit is arranged at the upper end of the support, and the planting pot is located at the lower end of the support.

[0020] Further, the support comprises:

[0021] a hollow part formed on the side wall of the support;

[0022] a curved arm in the form of an arc-shaped support plate arranged at the hollow part, a plurality of solar panels are arranged radially on the curved arm, and when the sun moves to an appropriate angle, the light collecting unit can converge sunlight on the solar panels.

[0023] Further, the support further comprises:

[0024] a mounting groove formed at the upper end of the support, and the light collecting unit is arranged in the mounting groove.

[0025] Further, the upper end of the support is provided with a stop block, the stop block is located at the periphery of the light collecting unit, and the stop block can stop the light collecting unit.

[0026] Further, the photovoltaic power generation unit further comprises a charge and discharge management module and an electrical device, the charge and discharge management module is connected with the solar cell panel and the electrical device respectively, the charge and discharge management module can control the solar cell panel to convert the light energy of sunlight into electric energy during the day and store the electric energy in the energy storage battery, and when the electrical device needs to consume electricity, the charge and discharge management module can control the energy storage battery to supply power to the electrical device.

[0027] Further, the included angle between the support and the horizontal plane is denoted as a support inclination angle α, and the support inclination angle α is equal to the noon sun elevation angle on the spring equinox day.

[0028] Further, the width or diameter of the heat storage bin is the distance between the focusing point of sunlight of the Fresnel lens on the winter solstice day and the focusing point of sunlight of the Fresnel lens on the summer solstice day.

[0029] In the agricultural planting device, the main body structure of the agricultural planting device is formed by the support and the planting pot, the energy utilization system of the agricultural planting device is formed by the light collecting unit, the photovoltaic power generation unit and the heat collecting unit, the coupling of light collecting and heat storage materials is realized through the geometric optical structure, heat storage and heat preservation are performed in the agricultural planting process, and the temperature difference of plant growth is reduced; meanwhile, the fluorescent solar collector (LSCs) prepared by the combination of the fluorescent material and the Fresnel lens is coupled with the solar cell panel to generate electricity, the energy consumption of agricultural production is reduced, certain economic benefits are generated by using the abundant electricity, the fluorescence emitted after the excitation of the fluorescent material is used to supplement the illumination of plant growth, and the purpose of improving the crop growth environment and generating higher plant planting benefits is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is a perspective structural schematic view of the agricultural planting device in the first visual angle according to the present application;

[0031] Figure 2 is a perspective structural schematic view of the agricultural planting device in the second visual angle according to the present application;

[0032] Figure 3 is a side structural schematic view of the agricultural planting device according to the present application;

[0033] Figure 4 is a perspective structural schematic view of the planting pot in the agricultural planting device according to the present application;

[0034] Figure 5It is the stereoscopic structure schematic view of the support in the agricultural planting device of the present application;

[0035] Figure 6 It is the side view structure schematic view of the support in the agricultural planting device of the present application;

[0036] Figure 7 It is the top view structure schematic view of the support in the agricultural planting device of the present application;

[0037] Figure 8 It is the schematic view for the inclination and elevation of the object;

[0038] Figure 9 It is the schematic view for the inclination α of the support in the agricultural planting device of the present application;

[0039] Figure 10 It is the sunlight ray diagram at the noon time of the equinox day and the summer solstice day;

[0040] Figure 11 It is the ray schematic view when the sunlight is vertically incident to the Fresnel lens;

[0041] Figure 12 It is the ray schematic view when the sunlight is not vertically incident to the Fresnel lens;

[0042] Figure 13 It is the effect diagram of the sunlight irradiating to the solar cell panel in the movement process;

[0043] Figure 14 It is the real photo of the test device used in the test example 1;

[0044] Figure 15 It is the photo of the focusing spot shape of the Fresnel lens when the light source is incident at 90° in the test example 1;

[0045] Figure 16 It is the photo of the focusing spot shape of the Fresnel lens when the light source is incident at 70° in the test example 1;

[0046] Figure 17 It is the photo of the focusing spot shape of the Fresnel lens when the light source is incident at 50° in the test example 1;

[0047] The marks in the figure represent:

[0048] 1, support; 101, curved arm; 102, hollow part; 103, mounting groove; 104, stop block; 2, planting pot; 201, heat storage bin; 202, planting area; 203, partition wall; 204, wiring hole; 3, light collecting unit; 301, Fresnel lens; 4, photovoltaic power generation unit; 401, solar cell panel; 5, heat collecting unit. DETAILED DESCRIPTION

[0049] The technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by a person of ordinary skill in the art belong to the scope of protection of the present application.

[0050] In the description of the present application, it should be noted that the terms used herein are only intended to describe specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For ease of description, the sizes of the various parts shown in the drawings are not drawn in proportion to the actual proportions. The techniques, methods and devices known to those of ordinary skill in the relevant art can not be discussed in detail, but should be considered as part of the authorized description. In all examples shown and discussed herein, any specific value should be interpreted as merely exemplary, and not as a limitation. Therefore, other examples of exemplary embodiments can have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so further discussion is not needed in subsequent drawings once an item is defined in one drawing.

[0051] It should be noted that the terms "first", "second", and the like in the specification and claims of the present application are used to distinguish similar objects, and are not intended to describe a specific order or sequence. It should be understood that the data used in this way can be exchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than that illustrated or described herein, and the objects distinguished by "first", "second", etc. are usually a class, not limited to the number of objects, for example, the first object can be one or more. In addition, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / ", generally indicates that the front and rear associated objects are in an "or" relationship.

[0052] It should be noted that in the description of the present application, the orientation terms such as "front, rear, upper, lower, left, right", "transverse, vertical, perpendicular, horizontal" and "top, bottom" and the like indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and in the absence of contrary indications, these orientation terms do not indicate and imply that the indicated device or element must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the scope of protection of the present application; the orientation terms "inner, outer" refer to the inner and outer relative to the contour of each component.

[0053] It should be noted that in the present application, the terms "comprising", "containing" or any other variant thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements not only includes those elements, but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a" does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element. In addition, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing functions in the order shown or discussed, but can also include performing functions in a substantially simultaneous manner or in reverse order, for example, the described methods can be performed in an order different from that described, and various steps can be added, omitted, or combined. In addition, features described with reference to certain examples can be combined in other examples.

[0054] A fluorescent light and energy storage coupled agricultural planting device, as shown in the accompanying drawings, comprises: Figures 1-7

[0055] A planting pot 2, in which a heat storage compartment 201 and a planting area 202 are formed;

[0056] A support 1, which is arranged on the planting pot 2;

[0057] A light collecting unit 3, which comprises a Fresnel lens 301, and a fluorescent material is compounded on the Fresnel lens 301, and the fluorescent light emitted by the fluorescent material after excitation can supplement the light for the growth of plants;

[0058] A photovoltaic power generation unit 4, which comprises a solar panel 401 and an energy storage battery, and the solar panel 401 can generate electric energy and store it in the energy storage battery under the irradiation of sunlight;

[0059] A heat collecting unit 5, which is arranged in the heat storage compartment 201, and the heat collecting unit 5 absorbs the heat energy of sunlight through a phase change material and releases heat to the plants in the planting area 202 when needed;

[0060] When sunlight irradiates on the light collecting unit 3, the light collecting unit 3 can focus light on the phase change material or the solar panel 401 according to the change of the incident angle, so that the agricultural planting device can store and utilize the heat energy of sunlight through the phase change material, or store and utilize the light energy of sunlight through the photovoltaic power generation unit 4.

[0061] Preferably, the heat storage compartment 201 is arranged in the central region of the planting pot 2, and the planting area 202 is arranged around the periphery of the heat storage compartment 201. ​

[0062] As some examples of the present application, a partition wall 203 is arranged in the planting pot 2, and the space in the planting pot 2 is divided into the heat storage compartment 201 and the planting area 202 by the partition wall 203.

[0063] Preferably, the partition wall 203 is a circular cylindrical structure, and the partition wall 203 is arranged coaxially with the planting pot 2, so that the heat storage compartment 201 is located in the central region of the planting pot 2, and the annular planting area 202 is formed around the heat storage compartment 201.

[0064] Further, the support 1 is an annular cylindrical structure arranged in an inclined manner as a whole, the light collecting unit 3 is arranged at the upper end of the support 1, and the planting pot 2 is arranged at the lower end of the support 1.

[0065] Further, the support 1 comprises:

[0066] a hollow part 102 formed on the side wall of the support 1;

[0067] a curved arm 101 which is an arc-shaped support plate arranged at the hollow part 102, and a plurality of solar cell panels 401 are arranged radially on the curved arm 101, so that the light collecting unit 3 can converge sunlight onto the solar cell panels 401 when the sun moves to an appropriate angle.

[0068] Specifically, the curved arm 101 is arranged at the hollow part 102 at a specific angle, and the two ends of the curved arm 101 are connected to the support 1 and suspended at the hollow part 102.

[0069] Preferably, a round corner and rib structure is arranged at the connection between the curved arm 101 and the support 1 to reduce local stress concentration.

[0070] Further, the support 1 further comprises:

[0071] a mounting groove 103 formed at the upper end of the support 1, and the light collecting unit 3 is arranged in the mounting groove 103.

[0072] Preferably, the mounting groove 103 is an annular and stepped groove formed on the inner side of the support 1, and the light collecting unit 3 is clamped in the mounting groove 103.

[0073] Further, a stop block 104 is arranged at the upper end of the support 1, and the stop block 104 is located at the periphery of the light collecting unit 3, which can stop the light collecting unit 3 from falling accidentally.

[0074] As some examples of the present application, one or more stop blocks 104 can be provided at the upper end of the bracket 1, when the stop blocks 104 are multiple, they can be circumferentially spaced apart on the periphery of the mounting groove 103; when the stop block 104 is one, it can be provided at the lowest periphery of the light collecting unit 3 to effectively stop the light collecting unit 3; preferably, the stop block 104 is one, which is provided at the lowest periphery of the light collecting unit 3.

[0075] As some examples of the present application, the bracket 1 can be a one-piece structure; it can also be a split structure; preferably, the bracket 1 is a one-piece structure.

[0076] As some examples of the present application, the bracket 1 can be installed on the planting pot 2 by clamping, inserting, riveting, welding and the like.

[0077] Preferably, in the light collecting unit 3, the fluorescent material is compounded with the fluorescent Fresnel lens 301 by doping to form a fluorescent solar concentrator, hereinafter referred to as "LSCs".

[0078] Further, the photovoltaic power generation unit 4 further comprises a charge and discharge management module and an electrical device, the charge and discharge management module is connected with the solar cell panel 401 and the electrical device respectively, the charge and discharge management module can control the solar cell panel 401 to convert the light energy of sunlight into electrical energy during the day and store it in the energy storage battery, when the electrical device needs to be powered, the charge and discharge management module can control the energy storage battery to supply power to the electrical device.

[0079] As some examples of the present application, the electrical device can be selected from one or more electrical devices in the planting site, such as plant growth lamps, site lighting lamps, environmental monitoring devices, heating devices, etc.

[0080] Preferably, the electrical device is a plant growth lamp, the charge and discharge management module 403 can be connected with the plant growth lamp, the charge and discharge management module can control the photovoltaic power generation unit 4 to convert the light energy of sunlight into electrical energy during the day and store it in the energy storage battery, at the same time, the charge and discharge management module can control the energy storage battery to supply power to the electrical device at night.

[0081] As some examples of the present application, the energy storage battery is selected from gallium arsenide battery, back contact silicon battery, lithium battery, multi-junction III-V compound battery, etc.

[0082] Preferably, the energy storage battery is a lithium battery, such as one or more of lithium cobaltate, lithium manganate, lithium nickel cobalt manganate, lithium nickel cobalt aluminate, lithium iron phosphate, lithium titanate battery, etc.

[0083] Further, a plurality of wiring holes 204 are arranged on the planting pot 2 and / or the support 1, and the wiring holes 204 are used for electrical connection of components in the photovoltaic power generation unit 4.

[0084] Further, the heat collecting unit 5 is formed by a phase change material filled in the heat storage bin 201, and preferably, the phase change material is a solid-liquid phase change material.

[0085] As some examples of the present application, the phase change material can be one or more of paraffin, fatty acid / ester, hydrated inorganic salt, etc.

[0086] Further, as shown in Figures 8-9 In the present application, an angle between the support 1 and a horizontal plane is denoted as a support inclination angle a. In order to set a proper support inclination angle a, in the present application, it is considered that plant growth and development is generally carried out in spring and summer, and the diurnal temperature difference is large in spring, and the plant has a large demand for heat storage. At the same time, in order to achieve maximum heat storage, it is required that the sunlight is perpendicular to the Fresnel lens 301 at the time of the strongest irradiation intensity at noon. Therefore, the present application uses the solar altitude angle at noon on the equinox day as the size of the support inclination angle a, wherein the solar altitude angle is an angle between the sunlight and the horizontal plane.

[0087] In addition, it is known that the sun's direct point gradually changes over time within a year. For the northern hemisphere where China is located, the sun's direct point can be as far north as the Tropic of Cancer, which is the summer solstice day and the time of the largest solar altitude angle at noon in the whole year. The sun's direct point can be as far south as the Tropic of Capricorn, which is the winter solstice day and the time of the smallest solar altitude angle at noon in the whole year. The support inclination angle a designed in the present application is the solar altitude angle at noon on the equinox day. Therefore, with the change of the solar altitude angle at noon within a year, the focusing point of the Fresnel lens 301 on the sunlight at noon will gradually move, and the maximum deviation of the focusing point is on the summer solstice day and the winter solstice day. On this basis, in order to make the light be focused in the heat storage bin 201 at the time of the strongest irradiation intensity at noon within a year, and to achieve the maximum heat storage, the width or diameter of the heat storage bin 201 can be designed and calculated, i.e. the distance between the focusing point of the Fresnel lens 301 on the sunlight at noon on the winter solstice day and the focusing point of the Fresnel lens 301 on the sunlight at noon on the summer solstice day.

[0088] As shown in Figures 8-10 The calculation process of the distance between the focusing point of the Fresnel lens 301 on the sunlight at noon on the winter solstice day and the focusing point of the Fresnel lens 301 on the sunlight at noon on the summer solstice day is described as follows: Figure 10The sun light ray diagram of the spring equinox and the summer solstice is shown, wherein the angle theta is the winter solstice noon sun elevation angle, the angle gamma is the summer solstice noon sun elevation angle, and the angle beta is the difference between the angle gamma and the angle theta. In addition, x is the horizontal distance between the vertexes of the angle theta and the angle gamma, and then x is the distance between the focusing point of the Fresnel lens 301 on the sun light at the winter solstice noon and the focusing point of the Fresnel lens 301 on the sun light at the summer solstice noon. According to the trigonometric function, the length of the hypotenuse of the two right-angled triangles corresponding to the angle theta and the angle gamma can be easily obtained, and then the offset distance x can be obtained according to the cosine law. In addition, it can be known that Figure 10 The vertical height y is affected by the size of the support 1, and the size of the support 1 will cause the size of x to change.

[0089] Further, as shown in the figure, Figures 11-13 The support of the Fresnel lens 301 doped with fluorescent material is designed to have an inclination angle alpha, so that the sun light is vertically incident on the Fresnel lens 301 at the time period when the irradiation intensity is the largest during the day, and then focused in the heat storage bin 201 below the Fresnel lens 301. The focused solar energy causes the phase change heat storage material in the heat storage bin 201 to melt, thereby storing the heat to the maximum extent. When the sun light is not vertically incident on the Fresnel lens 301 doped with fluorescent material, it is focused on the solar cell panel 401 by offset. At this time, the photovoltaic power generation unit 4 can generate electric energy through the photovoltaic effect.

[0090] The application innovatively utilizes the light which is vertically incident and not vertically incident on the Fresnel lens 301, without the need for a light ray tracking module. Through ingenious design, the Fresnel lens 301 is combined with different application scenarios corresponding to different incident angles, so that the application range is wider, and the investment cost is reduced.

[0091] In the application, the heat storage and heat preservation system includes paraffin phase change heat storage material, a heat storage bin and a basin support structure. The support of the Fresnel light collecting lens doped with fluorescent material is designed to have an inclination angle, so that the sun light is vertically incident on the lens at the time period when the light irradiation is the largest during the day, and then focused in the heat storage bin below the lens. The focused solar energy causes the paraffin phase change heat storage material in the heat storage bin to melt, thereby storing the heat. At night, when the air temperature decreases, the heat storage material re-solidifies, releases heat, delays the temperature drop time, and plays a certain heat preservation role for the growth of plants.

[0092] The working process of the agricultural planting device is described as follows: Figures 11-13As shown, when the light is vertically incident on the Fresnel lens 301, the light is focused in the heat storage bin 3, and heat storage is realized by the phase change material; when the light is obliquely incident on the Fresnel lens 301, the light is focused on the solar cell panel 401, and the utilization of light energy is realized by photovoltaic power generation. Meanwhile, the Fresnel lens 301 is doped with fluorescent material, and the light of the wave band which has less effect on plant growth can be absorbed by the fluorescent material, and the fluorescent light of the wave band which is more needed for plant growth is emitted to the planting area 202 of the plant, so as to supplement the light for the plant. Further, in the photovoltaic power generation unit 4, when the solar cell panel 401 is irradiated by sunlight, electric energy is generated and transmitted to the charge and discharge management module, and then transmitted to the energy storage battery for storage; when the electric energy stored in the energy storage battery needs to be used, the electric energy of the battery can be output through the USB interface on the charge and discharge management module, and can be used for connecting the plant growth lamp to supplement the light for the plant at night.

[0093] In addition, in the present application, it is found through experiments that when the light is vertically incident on the Fresnel lens 301, the focused light spot is circular, and with the deviation of the light incidence angle, the focused light spot is gradually deviated from the point focus, becomes an ellipse, and even becomes unilateral divergence. Therefore, according to the experimental results, a plurality of solar cell panels 401 are reasonably arranged. During the day, when the sunlight is not vertically incident on the Fresnel lens 301 doped with fluorescent material, the sunlight is deviated and focused on the solar cell panel 401, the solar cell panel 401 generates current through the photovoltaic effect, the current flows through the controller, and then is stored in the energy storage battery through the connection loop; at night, when there is no sunlight, the energy storage battery supplies power to the plant growth lamp through the charge and discharge management module, so as to supplement the light for the growth of the plant. Meanwhile, the fluorescent material is excited by sunlight, and the light of the wave band which has less effect on plant growth can be absorbed, and the fluorescent light of the wave band which is more needed for plant growth is emitted.

[0094] In summary, the present application is mainly inspired by the front-end use of fluorescent material and high-performance heat storage material, and an agricultural planting device coupled with fluorescent material and energy storage is constructed, the purpose of which is to reduce the production energy consumption of agriculture, respectively utilize the characteristics of heat storage material, photovoltaic power generation technology and fluorescent material, realize the full utilization of light energy and heat energy brought by sunlight, make the production plant have a better growth environment, and achieve higher planting income.

[0095] Specifically, in the agricultural planting device, the main structure of the agricultural planting device is formed by the support 1 and the planting pot 2, the energy utilization system of the agricultural planting device is formed by the light condensing unit 3, the photovoltaic power generation unit 4 and the heat collecting unit 5, the coupling of light condensation and heat storage materials is realized through the geometric optical structure, heat storage and heat preservation are carried out in the agricultural planting process, and the temperature difference of plant growth is reduced; meanwhile, the fluorescent solar collector (LSCs) prepared by the combination of the fluorescent material and the Fresnel lens is coupled with the solar cell panel to generate electricity, the energy consumption of agricultural production is reduced, a certain economic benefit is generated by using the abundant electricity, the fluorescence emitted after the excitation of the fluorescent material is used to supplement the light for the growth of plants, and the purpose of improving the growth environment of crops and generating higher plant planting benefits is achieved.

[0096] In actual use, different scales and types of agricultural planting devices can be designed for agricultural greenhouse and garden planting, so that better growth environment is provided for plants while reducing energy consumption, and plant production is promoted.

[0097] Compared with the existing solar energy utilization device, the agricultural planting device has the following advantages:

[0098] Firstly, the agricultural planting device does not need to track the sun module, and the inclination of the support 1 and the use of the fluorescent solar collector (LSCs) are ingeniously designed, so that the agricultural planting device has two working states, can fully utilize the sunlight vertically incident and non-vertically incident to the Fresnel lens 301, realizes the comprehensive utilization of the light energy and heat energy generated by the sunlight, and improves the efficiency and economic benefit.

[0099] Secondly, the agricultural planting device innovatively combines the fluorescent material and the energy storage device together, light and temperature are two very important aspects for plant growth, the fluorescent material in the present application can absorb light of a wavelength that has little effect on plant growth, and emit fluorescent light of a wavelength that is more beneficial to plant growth, so as to supplement the light conditions of plants; meanwhile, the heat collecting unit 5 can save a certain amount of heat to provide better temperature conditions for the growth of plants, the photovoltaic power generation unit 4 can generate electricity by using sunlight and supply power to electric devices such as plant growth lamps, and each unit cooperates with each other to ultimately realize the purpose of improving the growth environment of crops, promoting crop production and improving economic benefit.

[0100] Compared with the existing agricultural planting technology, the agricultural planting device has the following advantages:

[0101] (1) In the plant growth environment level: the agricultural planting device uses the characteristic that the fluorescent material can absorb the light of a small band of action on plant growth and emit the fluorescent light of a band more needed by plant growth, to provide a better environment for plant growth. In addition, the heat storage and preservation device is used to adjust the temperature of plant growth through the latent heat storage and release of the phase change heat storage material, to play a certain heat preservation role. At the same time, the agricultural planting device also uses photovoltaic power generation and stores the power during the day, and supplies power for the grow light at night to make up for the light for plant growth, to promote plant growth and improve planting efficiency.

[0102] (2) In terms of energy saving and emission reduction: the agricultural planting device uses the light and heat resources of the sun, fully utilizes the sunlight which is not vertically incident to the LSCs, and makes it irradiate on the solar cell panel 401 to generate electric energy. Through the selection of reasonable solar cell panel 401 and plant grow light, the photovoltaic power generation can be used to supply power for the plant grow light, to realize self-production and self-sale and save energy.

[0103] Test Example 1: Test support for non-vertical incidence Fresnel lens light path

[0104] Because the Fresnel lens is fixed in the design of the device, the movement of the sun will inevitably cause the movement of the focused light spot and the change of its shape. In order to reasonably utilize the light focusing of the non-vertical incidence Fresnel lens and determine the arrangement of the solar cell panel, the non-vertical incidence Fresnel lens light path test is carried out in this project.

[0105] Specifically, the test device as shown in Figure 14 is built according to the agricultural planting device of the present application, and the light focusing result of the non-vertical incidence Fresnel lens is studied by using the test device, and the experimental result is shown in Figures 15-17 It is found in the test that when the light source is incident at 90°, 70° and 50° respectively, the focused light spot shape of the Fresnel lens gradually deviates from the point focusing, becomes an ellipse and then diverges on one side.

[0106] The above test result provides a basis for the design of the present application. Without the light tracing module, the solar cell panel is designed to form a battery group in a radial shape for reasonably utilizing the light of the non-vertical incidence Fresnel lens.

[0107] At the same time, it is found through the test that within a day, as shown in Figure 13 , the sun rises in the east and sets in the west, and except at noon, the sunlight at different times will be deflected and focused on the solar cell panel by the Fresnel lens, so as to realize photovoltaic power generation. Thus, the purpose of maximizing the utilization of the light focusing of the non-vertical incidence Fresnel lens is achieved without the light tracing device.

[0108] Test Example 2: Feasibility verification of the present application

[0109] To ensure the feasibility of this invention, a method as follows has been established. Figure 14 The actual model shown serves as the experimental setup, in which the type of solar cell array, the model of the grow lamp, the model of the fluorescent material, the paraffin phase change heat storage material, and the size of the planting pot were selected. A control plant planting experiment was then conducted based on these specifications. The results and indicators obtained through various calculations and experiments performed on this device demonstrate the feasibility of implementing this invention, as detailed below:

[0110] 1. Photovoltaic power generation unit

[0111] In this system, the verification process uses a daily average temperature correction model to estimate the annual power generation of the solar cell array. At the same time, the power consumption of the growth lamp used in this invention is calculated. The solar cell array indicators used in the calculation are shown in Table 1, and the calculation results are shown in Tables 2 and 3.

[0112] The specific details of the model simplification are as follows:

[0113] (1) At 1000W / m 2 Using irradiation as a baseline and assuming a constant temperature throughout the day, the efficiency of the solar cell array is adjusted.

[0114] (2) The solar cell power variation for the entire month is roughly represented by the 15th of each month.

[0115] Table 1 Solar Cell Parameters

[0116] Solar cell group index Data Single cell area 68mm*37mm Single cell voltage 5V Single cell current 60mA

[0117] Table 2 Comparison of Power Generation from Solar Panels and Daily Power Consumption of Grove Lights in Beijing, January-June

[0118]

[0119] Table 3 Comparison of Power Generation from Solar Panels and Daily Power Consumption of Grove Lights in Beijing from July to December

[0120]

[0121]

[0122] The data in the table shows that the daily power generation of the solar cell arrays used in this invention is far greater than the daily power consumption of the grow lights. The annual power generation of this device can reach 41477.347Wh. This calculation shows that this device can meet the daily power requirements of the grow lights, and at the same time, the surplus power can be used to generate certain economic benefits.

[0123] 2. Heat collection unit

[0124] The thermal storage material selected for this device has a latent heat of 220 J / g, a phase change temperature of 32℃, a thermal conductivity of 1.6 W / (m℃), an equivalent outer diameter of 0.16 cm, and an equivalent inner diameter of 0.045 cm.

[0125] Based on the model formula of single-layer cylindrical wall in the book "Heat Transfer" by Tao Wenquan, and using the soil heat transfer coefficient studied by Xiong Kun et al., the heat loss of the device, the heat storage capacity of different masses of heat storage materials, and the heat storage time were calculated. The results are shown in Table 4.

[0126] Theoretical calculations show that the thermal storage material has certain heat preservation properties, which can completely compensate for the heat loss caused by the basin.

[0127] Table 4 Comparison of heat storage capacity and heat storage time for thermal storage materials with different weights

[0128] Heat storage material mass 100 200 300 400 500 Heat storage amount 22000 44000 66000 88000 110000 Heat storage time / s 1230.823 2461.646 3692.469 4923.292 6154.116 Heat storage time / min 20.51372 41.02744 61.54116 82.05487 102.5686

[0129] Simultaneously, a control experiment was conducted using soil of the same volume, similar pot structure, and seeds of the same weight, purity, germination rate, and vigor. To investigate the actual effect of the heat collection unit, soil temperature was simultaneously measured in both the experimental and control groups using a temperature recorder. Soil temperature changes were recorded over 24 hours at 15-minute intervals. Table 5 shows the specific temperature values ​​recorded for the control and experimental groups. The average and maximum temperatures of the experimental group were higher than those of the control group, indicating that the heat collection unit has a certain heat preservation performance and can provide a better growing environment for plants.

[0130] Table 5 Comparison of specific temperature values ​​between the experimental group and the control group

[0131] Soil temperature special value Experimental group Control group Temperature maximum value / ℃ 27.5 20.6 Temperature minimum value / ℃ 14.5 15.1 Temperature average value / ℃ 18.5 16.9 Data point temperature higher than 17℃ proportion 59.2％ 33.3％

[0132] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. An agricultural planting device coupling fluorescence and energy storage, characterized in that, include: Planting pot (2), which forms a heat storage chamber (201) and a planting area (202); A support (1) is mounted on the planting pot (2); A light-concentrating unit (3) includes a Fresnel lens (301) on which a fluorescent material is composited. The fluorescence emitted by the fluorescent material after being excited can supplement the light for the growth of plants. A photovoltaic power generation unit (4) includes a solar panel (401) and an energy storage battery. Under the irradiation of sunlight, the solar panel (401) can generate electrical energy and store it in the energy storage battery. A heat collection unit (5) is installed inside the heat storage chamber (201). The heat collection unit (5) absorbs the heat energy of sunlight through a phase change material and releases heat to the plants in the planting area (202) when needed. When sunlight shines on the concentrating unit (3), the concentrating unit (3) can focus the light onto the phase change material or solar panel (401) according to the change of the incident angle, so that the agricultural planting device can store and utilize the thermal energy of sunlight through the phase change material, or store and utilize the light energy of sunlight through the photovoltaic power generation unit (4).

2. The agricultural planting device according to claim 1, characterized in that, The heat storage chamber (201) is located in the central area of ​​the planting pot (2), and the planting area (202) is arranged around the periphery of the heat storage chamber (201).

3. The agricultural planting device according to claim 1 or 2, characterized in that, A partition wall (203) is provided inside the planting pot (2) to divide the space inside the planting pot (2) into the heat storage chamber (201) and the planting area (202).

4. The agricultural planting device according to claim 1, characterized in that, The support (1) is an inclined annular cylindrical structure, the light-concentrating unit (3) is located at the upper end of the support (1), and the planting pot (2) is located at the lower end of the support (1).

5. The agricultural planting device according to claim 1 or 4, characterized in that, The support (1) includes: A hollow portion (102) is formed on the side wall of the bracket (1); The curved arm (101) is an arc-shaped support plate set at the hollow part (102). Multiple solar panels (401) are radially arranged on the curved arm (101). When the sun moves to a suitable angle, the light-concentrating unit (3) can concentrate sunlight onto the solar panels (401).

6. The agricultural planting device according to claim 1 or 4, characterized in that, The support (1) further includes: A mounting groove (103) is formed at the upper end of the bracket (1), and the focusing unit (3) is disposed in the mounting groove (103).

7. The agricultural planting device according to claim 6, characterized in that, A stop block (104) is provided at the upper end of the bracket (1). The stop block (104) is located on the periphery of the light-concentrating unit (3). The stop block (104) can stop the light-concentrating unit (3).

8. The agricultural planting device according to claim 1, characterized in that, The photovoltaic power generation unit (4) further includes a charge and discharge management module and an electrical device. The charge and discharge management module is connected to the solar panel (401) and the electrical device respectively. The charge and discharge management module can control the solar panel (401) to convert sunlight into electrical energy during the day and store it in the energy storage battery. When the electrical device needs electricity, the charge and discharge management module can control the energy storage battery to supply power to the electrical device.

9. The agricultural planting device according to claim 1, characterized in that, The angle between the support (1) and the horizontal plane is denoted as the support tilt angle α, which is equal to the solar altitude angle at noon on the vernal equinox.

10. The agricultural planting device according to claim 1, characterized in that, The width or diameter of the heat storage chamber (201) is the distance between the focal point of the Fresnel lens (301) on the winter solstice and the focal point of the Fresnel lens (301) on the summer solstice.

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