Solar cell based on carbon nanostructure

Abstract

The invention discloses a solar cell based on a carbon nanostructure, and relates to the technical field of solar cells, the solar cell comprises a cell main body, a solar cell sheet and a connection assembly, the left and right sides of the cell main body are fixedly provided with heat conduction blocks, and the cell main body comprises the solar cell sheet, a lower EVA adhesive layer, a backboard, an upper EVA adhesive layer and a glass cover plate. A lower EVA adhesive layer is connected to the lower side of the solar cell in an adhesive mode, and a back plate is fixed to the lower portion of the lower EVA adhesive layer. According to the solar cell based on the carbon nanostructure, the back electrode layer and the upper electrode layer of the solar cell piece are flexible transparent conductive electrodes and have good photoelectric performance, high adhesive force and excellent stability, and the graphene layer is a carbon nanomaterial and has excellent optical, electrical and mechanical properties. The graphene layer fills the gaps of the network with the nanosheets and connects the nanowires with the graphene, so that more conductive channels can be provided, and the solar cell has stable electrical performance.

Description

Technical Field

[0001] The invention relates to the technical field of solar cells, in particular to a solar cell based on a carbon nanostructure. Background Art

[0002] Solar cells are thin sheets of optoelectronic semiconductors that use sunlight to generate electricity directly. They are devices that directly convert light energy into electrical energy through the photoelectric effect or photochemical effect. They are also called "solar chips" or "photovoltaics". As long as they are illuminated under certain illumination conditions, they can instantly output voltage and generate current in the presence of a circuit. In physics, this is called solar photovoltaics (abbreviated as PV), or photovoltaics for short.

[0003] In solar cells, conventional solar cells use glass electrodes, but the resistivity of glass electrodes is relatively high, which will affect the efficiency of solar cells, and the use of ordinary solar cells results in insufficient electrical performance. In addition, multiple battery bodies are not easy to connect and assemble with each other.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and a solar cell based on carbon nanostructure is proposed. Summary of the invention

[0005] In view of the deficiencies of the prior art, the present invention provides a solar cell based on a carbon nanostructure, which solves the problems raised in the above background technology.

[0006] To achieve the above purpose, the present invention is implemented through the following technical scheme: a solar cell based on carbon nanostructure, comprising a battery body, a solar cell sheet and a connection component, the left and right sides of the battery body are fixed with heat conductive blocks, and the battery body comprises a solar cell sheet, a lower EVA glue layer, a back plate, an upper EVA glue layer and a glass cover plate, the lower side of the solar cell sheet is glued with the lower EVA glue layer, and the lower side of the lower EVA glue layer is fixed with the back plate, the upper side of the solar cell sheet is glued with the upper EVA glue layer, and the upper side of the upper EVA glue layer is fixed with the glass cover plate, the solar cell sheet comprises a semiconductor substrate, a back electrode layer, a graphene layer, a polysilicon layer and an upper electrode layer, the lower side of the semiconductor substrate is fixed with the back electrode layer, and the upper side of the semiconductor substrate is fixed with the graphene layer, the inside of the graphene layer is equidistantly filled with polysilicon layers, and the upper side of the graphene layer is provided with an upper electrode layer, and a connection component is installed between adjacent battery bodies.

[0007] Furthermore, the semiconductor substrate is a flexible substrate, and the back electrode layer and the upper electrode layer are flexible transparent conductive electrodes, and the back electrode layer and the upper electrode layer are specifically ITO films that have been cesium-treated.

[0008] Furthermore, the graphene layer is formed by inserting transition metal carbides and carbonitrides between silver nanowires and graphene grown by chemical vapor deposition.

[0009] Furthermore, the joints between the lower EVA adhesive layer and the back plate, and between the upper EVA adhesive layer and the glass cover plate are both in tooth-like structures that mesh with each other.

[0010] Furthermore, the connection component includes an assembly plate and a protective baffle, the assembly plate is in an "I"-shaped structure, and the protective baffles are fixed to the front and rear sides of the assembly plate.

[0011] Furthermore, the connection component also includes a connection groove, and the connection groove is provided on both the left and right sides of the assembly plate, and the size of the connection groove matches that of the heat conduction block.

[0012] Furthermore, the connection assembly also includes a support plate and a telescopic frame. Support plates are fixed on both sides of the bottom of the assembly plate, and a telescopic frame is installed on one side of the support plate.

[0013] Furthermore, a heat dissipation component is embedded inside the assembly plate, and the heat dissipation component includes a water cooling block and heat dissipation fins. The water cooling block is embedded inside the assembly plate at equal distances, and heat dissipation fins are fixed to the bottom and left and right sides of the water cooling block.

[0014] Furthermore, the heat dissipation assembly also includes ventilation slots, the ventilation slots are arranged between the water cooling blocks, and the ventilation slots penetrate through the interior of the assembly plate.

[0015] The present invention provides a solar cell based on carbon nanostructure, which has the following beneficial effects:

[0016] 1. The solar cell based on carbon nanostructure is provided with solar cell sheets. The components of the solar cell sheets are flexible materials, so that the solar cell sheets have a flexible structure and are widely used. The back electrode layer and the upper electrode layer are flexible transparent conductive electrodes with good photoelectric properties, strong adhesion and excellent stability. The graphene layer is a carbon nanomaterial with excellent optical, electrical and mechanical properties. The graphene layer fills the gaps in the network with nanosheets and connects the nanowires with the graphene to provide more conductive channels. Due to the solvent evaporation effect and thermal effect in the preparation process, the nanowire nodes are welded together, which has the effects of low sheet resistance and high transmittance. In addition, the graphene layer composite polycrystalline silicon layer has excellent electronic conductivity and mechanical stability, so the solar cell sheet has stable electrical properties.

[0017] 2. The solar cell based on the carbon nanostructure is provided with a battery body, and the glass cover plate is easy to transmit light so that the sunlight can irradiate the solar cell, so as to convert the light energy into heat energy. The upper EVA adhesive layer and the lower EVA adhesive layer on the upper and lower sides of the solar cell have high light transmittance, bonding strength, thermal stability, air tightness and aging resistance. Since the joints between the lower EVA adhesive layer and the back plate, and between the upper EVA adhesive layer and the glass cover plate are all in a tooth-like structure that bites each other, the lower EVA adhesive layer and the back plate, and the upper EVA adhesive layer and the glass cover plate can be tightly fixed.

[0018] 3. The solar cell based on carbon nanostructure is provided with a connection component. The connection grooves on both sides of the assembly plate with an "I"-shaped structure can be embedded with the heat-conducting blocks on both sides of the battery body, so as to facilitate the connection and assembly between multiple battery bodies. The protective baffle can limit the heat-conducting blocks to prevent them from falling out. The support plates at the bottom of adjacent assembly plates are connected by telescopic frames, so as to facilitate the spacing between the assembly plates on the upper side of the support plates to be stretched by the telescopic frames. It is suitable for battery bodies of different sizes, and multiple assembly plates can be shrunk when not in use to reduce the footprint.

[0019] 4. The solar cell based on carbon nanostructure is provided with a heat dissipation component. The heat conductive blocks on both sides of the battery body can fit with the heat dissipation fins on the side of the water-cooling block inside the assembly plate, and then transfer the heat to the water-cooling block, so that the battery body can be assembled and the joints can dissipate heat conveniently. The ventilation grooves between the water-cooling blocks facilitate ventilation to take away the heat of the water-cooling blocks. At the same time, the heat dissipation fins at the bottom of the water-cooling blocks can further dissipate the heat, so that the water-cooling block maintains a low temperature state to facilitate continuous heat dissipation and cooling of the battery body. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of a top view of a solar cell based on a carbon nanostructure according to the present invention;

[0021] Figure 2 This is a schematic diagram of a bottom-up structure of a solar cell based on a carbon nanostructure according to the present invention;

[0022] Figure 3 This is a schematic diagram of the cross-sectional structure of a solar cell based on a carbon nanostructure according to the present invention;

[0023] Figure 4 A schematic diagram of a cross-sectional structure of a solar cell based on a carbon nanostructure of the present invention;

[0024] Figure 5 This is a schematic diagram of the three-dimensional structure of an assembled panel of a solar cell based on a carbon nanostructure according to the present invention.

[0025] In the figure: 1. Battery body; 2. Solar cell; 201. Semiconductor substrate; 202. Back electrode layer; 203. Graphene layer; 204. Polysilicon layer; 205. Upper electrode layer; 3. Lower EVA adhesive layer; 4. Back plate; 5. Upper EVA adhesive layer; 6. Glass cover; 7. Heat conducting block; 8. Connection assembly; 801. Assembly board; 802. Protective baffle; 803. Connection groove; 804. Support plate; 805. Telescopic frame; 9. Heat dissipation assembly; 901. Water cooling block; 902. Ventilation groove; 903. Heat dissipation fins. DETAILED DESCRIPTION

[0026] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0027] See also Figures 1 to 3 The present invention provides a technical solution: a solar cell based on a carbon nanostructure, comprising a battery body 1, a solar cell sheet 2 and a connection assembly 8, a heat conducting block 7 is fixed on both sides of the left and right sides of the battery body 1, and the battery body 1 comprises a solar cell sheet 2, a lower EVA adhesive layer 3, a back plate 4, an upper EVA adhesive layer 5 and a glass cover plate 6, the lower side of the solar cell sheet 2 is glued with the lower EVA adhesive layer 3, and the lower side of the lower EVA adhesive layer 3 is fixed with the back plate 4, the upper side of the solar cell sheet 2 is glued with the upper EVA adhesive layer 5, and the upper side of the upper EVA adhesive layer 5 is fixed with the glass cover plate 6, and the connection between the lower EVA adhesive layer 3 and the back plate 4, and between the upper EVA adhesive layer 5 and the glass cover plate 6 are all tooth-shaped structures that bite each other;

[0028] The specific operation is as follows: the glass cover plate 6 is light-transmitting so that sunlight can irradiate the solar cell 2, so as to convert light energy into heat energy; the upper EVA adhesive layer 5 and the lower EVA adhesive layer 3 on the upper and lower sides of the solar cell 2 have high light transmittance, bonding strength, thermal stability, air tightness and aging resistance; since the joints between the lower EVA adhesive layer 3 and the back plate 4, and between the upper EVA adhesive layer 5 and the glass cover plate 6 are in a tooth-like structure that interlocks with each other, the lower EVA adhesive layer 3 and the back plate 4, and the upper EVA adhesive layer 5 and the glass cover plate 6 can be tightly fixed.

[0029] See also Figure 4The solar cell 2 includes a semiconductor substrate 201, a back electrode layer 202, a graphene layer 203, a polysilicon layer 204 and an upper electrode layer 205. The back electrode layer 202 is fixed on the lower side of the semiconductor substrate 201, and the graphene layer 203 is fixed on the upper side of the semiconductor substrate 201. The inside of the graphene layer 203 is filled with polysilicon layers 204 at equal distances, and the upper side of the graphene layer 203 is provided with an upper electrode layer 205. The semiconductor substrate 201 is a flexible substrate, and the back electrode layer 202 and the upper electrode layer 205 are flexible transparent conductive electrodes, and the back electrode layer 202 and the upper electrode layer 205 are specifically cesium-treated ITO films; the graphene layer 203 is composed of transition metal carbides and carbonitrides inserted between silver nanowires and graphene grown by chemical vapor deposition;

[0030] The specific operation is as follows: the solar cell 2 is composed of flexible materials, so that the solar cell 2 has a flexible structure and is widely used. The back electrode layer 202 and the upper electrode layer 205 are flexible transparent conductive electrodes with good photoelectric properties, strong adhesion and excellent stability. The graphene layer 203 is a carbon nanomaterial with excellent optical, electrical and mechanical properties. The graphene layer 203 fills the gaps in the network with nanosheets and connects the nanowires with the graphene to provide more conductive channels. Due to the solvent evaporation effect and thermal effect in the preparation process, the nanowire nodes are welded together, which has the effects of low sheet resistance and high transmittance. In addition, the graphene layer 203 and the composite polysilicon layer 204 have excellent electronic conductivity and mechanical stability, so the solar cell 2 has stable electrical properties.

[0031] See also Figure 1 to Figure 2 , a connection assembly 8 is installed between adjacent battery bodies 1, and the connection assembly 8 includes an assembly plate 801 and a protective baffle 802, the assembly plate 801 is in an "I"-shaped structure, and the protective baffle 802 is fixed on both the front and rear sides of the assembly plate 801; the connection assembly 8 also includes a connection groove 803, and the left and right sides of the assembly plate 801 are provided with a connection groove 803, and the size of the connection groove 803 is consistent with the size of the heat conductive block 7; the connection assembly 8 also includes a support plate 804 and a telescopic frame 805, and the support plates 804 are fixed on both sides of the bottom of the assembly plate 801, and the telescopic frame 805 is installed on one side of the support plate 804;

[0032] The specific operation is as follows: the connecting grooves 803 on both sides of the assembly plate 801 in an "I"-shaped structure can be embedded in the heat-conducting blocks 7 on both sides of the battery body 1, thereby facilitating the connection and assembly between multiple battery bodies 1; the protective baffle 802 can limit the heat-conducting blocks 7 to prevent them from falling out; the support plates 804 at the bottom of adjacent assembly plates 801 are connected by telescopic frames 805, thereby facilitating the spacing between the assembly plates 801 on the upper side of the support plates 804 through the telescopic frames 805; this is suitable for battery bodies 1 of different sizes; and multiple assembly plates 801 can be retracted when not in use to reduce the footprint.

[0033] See also Figure 1 and Figure 5 , a heat dissipation component 9 is embedded in the assembly plate 801, and the heat dissipation component 9 includes a water-cooling block 901 and heat dissipation fins 903, the water-cooling block 901 is embedded in the assembly plate 801 at an equal distance, and the heat dissipation fins 903 are fixed to the bottom and left and right sides of the water-cooling block 901; the heat dissipation component 9 also includes ventilation slots 902, the ventilation slots 902 are arranged between the water-cooling blocks 901, and the ventilation slots 902 are opened through the assembly plate 801;

[0034] The specific operation is as follows: the heat-conducting blocks 7 on both sides of the battery body 1 can fit with the heat dissipation fins 903 on the sides of the water-cooling block 901 inside the assembly plate 801, and then conduct the heat to the water-cooling block 901, so that the battery body 1 can be assembled and the joints can dissipate heat conveniently. The ventilation grooves 902 between the water-cooling blocks 901 facilitate ventilation to take away the heat of the water-cooling block 901. At the same time, the heat dissipation fins 903 at the bottom of the water-cooling block 901 can further dissipate the heat, so that the water-cooling block 901 maintains a low temperature state to facilitate continuous heat dissipation and cooling of the battery body 1.

[0035] In summary, when the solar cell based on carbon nanostructure is used, the solar cell sheet 2, the lower EVA adhesive layer 3, the back plate 4, the upper EVA adhesive layer 5 and the glass cover plate 6 can be first combined, wherein the joints between the lower EVA adhesive layer 3 and the back plate 4, and between the upper EVA adhesive layer 5 and the glass cover plate 6 are all in a tooth-like structure that interlocks with each other, so that the lower EVA adhesive layer 3 and the back plate 4, and the upper EVA adhesive layer 5 and the glass cover plate 6 can be tightly fixed. When in use, the back electrode layer 202 and the upper electrode layer 205 of the solar cell sheet 2 are flexible transparent conductive electrodes with good photoelectric performance, strong adhesion and excellent stability, wherein the graphene layer 2 03 is a carbon nanomaterial with excellent optical, electrical and mechanical properties. The graphene layer 203 fills the gaps in the network with nanosheets and connects the nanowires with the graphene, so as to provide more conductive channels. Due to the solvent evaporation effect and thermal effect in the preparation process, the nanowire nodes are welded together, which has the effects of low sheet resistance and high light transmittance. In addition, the graphene layer 203 and the composite polysilicon layer 204 have excellent electronic conductivity and mechanical stability, so the solar cell 2 has stable electrical properties. Then the glass cover 6 can transmit light so that sunlight can irradiate the solar cell 2, converting light energy into heat energy.

[0036] During use, multiple battery bodies 1 can also be assembled together. During the assembly process, the heat-conducting blocks 7 on both sides of the battery body 1 are embedded in the connecting grooves 803 on both sides of the assembly plate 801 of the "I"-shaped structure, so that the protective baffle 802 limits the heat-conducting blocks 7 to prevent them from falling out, and then the spacing between the assembly plates 801 on the upper side of the support plate 804 is stretched by the telescopic frame 805, thereby fixing and tightening the battery body 1 between them. At this time, the heat-conducting blocks 7 on both sides of the battery body 1 can fit with the heat dissipation fins 903 on the side of the water-cooling block 901 inside the assembly plate 801, and then conduct heat to the water-cooling block 901, so that the battery body 1 can be assembled and the connection can dissipate heat conveniently, and the ventilation grooves 902 between the water-cooling blocks 901 can ventilate and take away the heat of the water-cooling block 901. At the same time, the heat dissipation fins 903 at the bottom of the water-cooling block 901 can further dissipate heat for it, so that the water-cooling block 901 maintains a low temperature state to continuously dissipate heat and cool the battery body 1, thus completing the entire use process of the solar cell based on the carbon nanostructure.

[0037] The embodiments of the present invention are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A solar cell based on carbon nanostructure, characterized in that: The invention comprises a battery body (1), a solar cell sheet (2) and a connection assembly (8), wherein a heat conducting block (7) is fixed on both the left and right sides of the battery body (1), and the battery body (1) comprises a solar cell sheet (2), a lower EVA adhesive layer (3), a back plate (4), an upper EVA adhesive layer (5) and a glass cover plate (6), wherein the lower side of the solar cell sheet (2) is glued to the lower EVA adhesive layer (3), and the back plate (4) is fixed below the lower EVA adhesive layer (3), and the upper side of the solar cell sheet (2) is glued to the upper EVA adhesive layer (5), and the glass cover plate is fixed above the upper EVA adhesive layer (5). (6), the solar cell (2) comprises a semiconductor substrate (201), a back electrode layer (202), a graphene layer (203), a polysilicon layer (204) and an upper electrode layer (205), the back electrode layer (202) being fixed on the lower side of the semiconductor substrate (201), and the graphene layer (203) being fixed on the upper side of the semiconductor substrate (201), the inside of the graphene layer (203) being filled with polysilicon layers (204) at equal distances, and the upper side of the graphene layer (203) being provided with an upper electrode layer (205), and a connection assembly (8) being installed between adjacent battery bodies (1).

2. A solar cell based on carbon nanostructure according to claim 1, characterized in that: The semiconductor substrate (201) is a flexible substrate, and the back electrode layer (202) and the upper electrode layer (205) are flexible transparent conductive electrodes, and the back electrode layer (202) and the upper electrode layer (205) are specifically ITO films that have been cesium-treated.

3. The carbon nanostructure-based solar cell according to claim 1, characterized in that: The graphene layer (203) is composed of transition metal carbides and carbonitrides inserted between silver nanowires and graphene grown by chemical vapor deposition.

4. The carbon nanostructure-based solar cell according to claim 1, characterized in that: The joints between the lower EVA adhesive layer (3) and the back plate (4), and between the upper EVA adhesive layer (5) and the glass cover plate (6) are both in the form of tooth-like structures that mesh with each other.

5. The carbon nanostructure-based solar cell according to claim 1, characterized in that: The connection assembly (8) comprises an assembly plate (801) and a protective baffle (802); the assembly plate (801) is in an "I"-shaped structure, and the protective baffles (802) are fixed to both the front and rear sides of the assembly plate (801).

6. The carbon nanostructure-based solar cell according to claim 5, characterized in that: The connection assembly (8) further comprises a connection groove (803), and the connection groove (803) is provided on both the left and right sides of the assembly plate (801), and the size of the connection groove (803) matches that of the heat conducting block (7).

7. The carbon nanostructure-based solar cell according to claim 5, characterized in that: The connection assembly (8) further comprises a support plate (804) and a telescopic frame (805); support plates (804) are fixed to both sides of the bottom of the assembly plate (801), and a telescopic frame (805) is installed on one side of the support plate (804).

8. The carbon nanostructure-based solar cell according to claim 5, characterized in that: A heat dissipation component (9) is embedded inside the assembly plate (801), and the heat dissipation component (9) comprises a water cooling block (901) and heat dissipation fins (903). The water cooling block (901) is embedded inside the assembly plate (801) at an equal distance, and heat dissipation fins (903) are fixed to the bottom and left and right sides of the water cooling block (901).

9. The solar cell based on carbon nanostructure according to claim 8, characterized in that: The heat dissipation assembly (9) further comprises ventilation slots (902), the ventilation slots (902) being arranged between the water cooling blocks (901), and the ventilation slots (902) being arranged through the interior of the assembly plate (801).

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