Solar cell panel and wearable intelligent device

Abstract

The utility model provides a solar cell panel and a wearable intelligent device, the solar cell comprises a plurality of power generation areas and a connecting part which are arranged above a substrate, and the connecting part is used for enabling the plurality of power generation areas to be electrically connected with each other; the power generation area comprises a solar cell epitaxial structure and a grid line structure arranged on the surface of the solar cell epitaxial structure, and the grid line structure is in contact with the connecting part; furthermore, the solar cell panel is provided with a plurality of power generation areas, and all the power generation areas are connected through the corresponding connecting parts to form a ring shape. On the basis, the annular solar cell panel can be obtained in a splicing mode, the interior does not need to be emptied, waste of raw materials can be reduced, the utilization rate of the materials is improved, and therefore the cost is reduced. Meanwhile, the grid line structure is arranged to be in contact with the connecting part, and the connecting part can achieve diversification of output voltage / current according to the requirement of an application environment for voltage and / or current.

Description

Technical Field

[0001] The utility model relates to the technical field of solar cells, and in particular to a solar cell panel and a wearable intelligent device. Background Art

[0002] Wearable smart devices have gradually entered the field of vision of mass consumers due to their advantages such as small size, portability and multiple functions, and their market size is further expanding; but due to their small size, the battery capacity they can carry will inevitably not be too large, which also brings the defect of short battery life, especially in the outdoor environment without sufficient charging, replenishing energy at any time becomes a major limitation of wearable smart devices.

[0003] Solar cells can directly convert solar energy into electrical energy and are the most efficient form of clean energy. Applying solar cells to outdoor wearable smart devices is an excellent energy supplement measure and can improve the battery life of the device. Currently, a mature solution is the solar cell watch of Garmin, a high-end outdoor watch manufacturer, which has a relatively broad market in outdoor smart devices.

[0004] In view of this, the inventor specially designed a solar panel and a wearable smart device, and this case was thus generated. Utility Model Content

[0005] The purpose of the utility model is to provide a solar panel and a wearable smart device to solve the energy replenishment problem of the wearable smart device.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0007] A solar cell panel comprises a solar cell, wherein the solar cell comprises a plurality of power generation areas and a connecting portion arranged above a substrate, wherein the connecting portion is used to electrically connect the plurality of power generation areas to each other; the power generation area comprises a solar cell epitaxial structure and a grid line structure arranged on the surface of the solar cell epitaxial structure, wherein the grid line structure forms contact with the connecting portion.

[0008] Preferably, the solar cell panel has a plurality of the power generation areas, and all the power generation areas are connected to form a ring shape through the corresponding connection parts.

[0009] Preferably, the grid line structure includes a main grid line of a connection portion connecting two ends of the power generation area, and a secondary grid line arranged to cross the main grid line.

[0010] Preferably, along the direction from the center of the ring to the edge of the solar cell panel, the width of the main grid line gradually increases, or the distance between two adjacent main grid lines gradually decreases.

[0011] Preferably, the gate line structure includes a transparent electrode or a metal electrode; wherein the transparent electrode includes one or more stacks of ITO electrodes, IZO electrodes, IGZO electrodes, AZO electrodes and graphene electrodes; and the metal electrode includes one or more stacks of Ag electrodes, Au electrodes, Cu electrodes and Au / Ag alloy electrodes.

[0012] Preferably, the width of the metal electrode is no greater than 15 μm.

[0013] Preferably, the solar cell comprises a flexible multi-junction gallium arsenide solar cell or a flexible single-junction gallium arsenide solar cell, and specifically may comprise a flexible double-junction solar cell or a flexible triple-junction solar cell or a flexible single-junction gallium arsenide solar cell.

[0014] Preferably, the base plate comprises a flexible substrate.

[0015] Preferably, the flexible substrate includes a polyimide substrate or a Cu substrate.

[0016] Preferably, the connection portion comprises a metal connection layer.

[0017] Preferably, the connection portion includes an Ag connection layer and / or a Cu connection layer.

[0018] Preferably, the solar panel has four power generation areas.

[0019] Preferably, taking the intersection center point of two adjacent power generation areas as the starting point, 60 bisectors along the first direction are formed on the surface of the solar cell panel; wherein, the first direction points from the annular center to the edge of the solar cell panel, and the bisectors on the surface of the power generation area constitute the secondary grid lines.

[0020] Preferably, among all the bisecting lines, the widths of the 5th, 10th, 15th, 20th, 25th, 30th, 35th, 40th, 45th, 50th, 55th and 60th bisecting lines, which start from the center point of the boundary between two adjacent power generation areas, are thicker than those of the other bisecting lines.

[0021] The utility model also provides a wearable intelligent device, comprising a dial and a control circuit board arranged below the surface, wherein the edge of the dial is a solar cell panel as described in any one of the above items, and at least one of the connecting parts is connected to the control circuit board.

[0022] Preferably, the bisectors serve as second / minute hand indicator lines; and among all the bisectors, the widths of the 5th, 10th, 15th, 20th, 25th, 30th, 35th, 40th, 45th, 50th, 55th, and 60th bisectors, which start from the center point of the intersection of two adjacent power generation areas, are thicker than those of the other bisectors, and serve as hour hand indicator lines.

[0023] Preferably, the bisector extends from a side of the solar panel close to the dial to an edge of the solar panel.

[0024] Through the above technical solutions, it can be known that the solar cell panel provided by the utility model, the solar cell includes a plurality of power generation areas and a connecting portion arranged above the substrate, the connecting portion is used to electrically connect the plurality of power generation areas to each other; the power generation area includes a solar cell epitaxial structure and a grid line structure arranged on the surface of the solar cell epitaxial structure, the grid line structure forms contact with the connecting portion; further, the solar cell panel has a plurality of the power generation areas, and all the power generation areas are connected to form a ring shape by corresponding to the connecting portion. Based on this, a ring-shaped solar cell panel can be obtained by splicing, without hollowing out the interior, which can reduce the waste of raw materials, improve the utilization rate of materials, and thus reduce costs. At the same time, by setting the grid line structure to form contact with the connecting portion, based on this, the connecting portion can select two adjacent power generation areas in series / parallel according to the requirements of the application environment for voltage and / or current, so as to achieve diversification of output voltage / current.

[0025] Secondly, along the direction from the center of the ring to the edge of the solar panel, the width of the main grid line gradually increases, or the distance between two adjacent main grid lines gradually decreases. Based on this setting, the current collection effect at the edge of the solar panel can be increased, thereby effectively improving the photoelectric conversion efficiency of the solar panel.

[0026] Furthermore, by using flexible multi-junction gallium arsenide solar cells with high mass-to-power ratio, the weight of solar panels can be greatly reduced while increasing the output power of solar panels, which helps to use them as energy replenishment components for smart devices, especially portable devices.

[0027] The utility model also provides a wearable smart device, comprising a dial and a control circuit board arranged below the surface, wherein the edge of the dial is any one of the solar panels described above, and at least one of the connecting parts is connected to the control circuit board. While realizing energy replenishment through the solar panel, the beneficial effects of the solar cell can also be achieved.

[0028] Furthermore, the solar panel is provided with four power generation areas; 60 bisectors along the first direction are formed on the surface of the solar panel with the center point of the intersection of two adjacent power generation areas as the starting point; wherein the bisectors on the surface of the power generation area constitute the secondary grid lines; among all the bisectors, the widths of the 5th, 10th, 15th, 20th, 25th, 30th, 35th, 40th, 45th, 50th, 55th, and 60th bisectors starting from the center point of the intersection of two adjacent power generation areas are thicker than the widths of other bisectors. When the solar panel is applied to a wearable smart device, the bisectors can be used as second / minute hand indication lines; and among all the bisectors, the widths of the 5th, 10th, 15th, 20th, 25th, 30th, 35th, 40th, 45th, 50th, 55th, and 60th bisectors starting from the center point of the intersection of two adjacent power generation areas are thicker than the widths of other bisectors, and can be used as hour hand indication lines. Thus, while the current density of the grid line structure battery is used to improve the battery efficiency, the bisecting lines can also be used as indicator lines for the hour hand / minute hand / second hand. Based on this setting, there is no need to make additional indicator lines on the dial, which reduces the production process of the wearable smart device and can effectively reduce the production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0030] Figure 1 A schematic top view of a solar cell panel provided by an embodiment of the utility model;

[0031] Figure 2 A schematic diagram of the structure of a solar cell provided by an embodiment of the utility model;

[0032] Figure 3 , Figure 4 A schematic structural diagram corresponding to the method for manufacturing a solar cell panel provided in an embodiment of the utility model;

[0033] Figure 5 A schematic diagram of the structure of a wearable smart device applied to a solar panel provided in an embodiment of the utility model;

[0034] Explanation of symbols in the figure:

[0035] S0, growth substrate;

[0036] S1, solar cell epitaxial structure;

[0037] S2, substrate;

[0038] S3, secondary grid line;

[0039] S4, main grid line;

[0040] S5, power generation area;

[0041] S6 / S7: connection part;

[0042] S8, circuit board;

[0043] S9, protective layer;

[0044] S10, first indicator line;

[0045] S11, second indicator line;

[0046] 10. Dial;

[0047] 11. InGaAs bottom cell;

[0048] 12. GaAs intermediate cell;

[0049] 13.GaInP top cell;

[0050] 14. Tunnel junction;

[0051] 15. Ohmic contact layer;

[0052] 16. Erosion cut-off layer. DETAILED DESCRIPTION

[0053] To make the content of the utility model clearer, the content of the utility model is further described below in conjunction with the accompanying drawings. The utility model is not limited to this specific embodiment. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0054] like Figure 1 , Figure 2 As shown, a solar cell panel comprises a solar cell, wherein the solar cell comprises a plurality of power generation areas S5 and connecting parts (S6 / S7) arranged above a substrate, wherein the connecting parts (S6 / S7) are used to electrically connect the plurality of power generation areas S5 to each other; the power generation area S5 comprises a solar cell epitaxial structure S1 and a grid line structure arranged on the surface of the solar cell epitaxial structure S1, wherein the grid line structure forms contact with the connecting parts (S6 / S7).

[0055] Based on the above, in one embodiment of the present application, the solar cell panel has a plurality of power generation areas S5, and all power generation areas S5 are connected to form a ring shape by corresponding connection parts (S6 / S7). Specifically, the ring shape may include a circle, an ellipse, a horseshoe, etc., which is not limited in the present application.

[0056] Based on the above, in one embodiment of the present application, the grid line structure includes a main grid line S4 connecting the connection parts (S6 / S7) at both ends of the power generation area S5, and a secondary grid line S3 arranged to cross the main grid line S4.

[0057] Based on the above, in one embodiment of the present application, along the direction from the center of the ring to the edge of the solar cell panel, the width of the main grid line S4 gradually increases, or the distance between two adjacent main grid lines S4 gradually decreases.

[0058] Based on the above, in one embodiment of the present application, the gate line structure includes a transparent electrode or a metal electrode; wherein the transparent electrode includes one or more of an ITO electrode, an IZO electrode, an IGZO electrode, an AZO electrode and a graphene electrode; and the metal electrode includes one or more of an Ag electrode, an Au electrode, a Cu electrode and an Au / Ag alloy electrode.

[0059] Based on the above, in one embodiment of the present application, in order to achieve aesthetics for human eyes and avoid shading of the metal electrode, the width of the metal electrode is no more than 15 μm.

[0060] Based on the above, in one embodiment of the present application, the solar cell includes a flexible multi-junction gallium arsenide solar cell or a flexible single-junction gallium arsenide solar cell, and specifically may include a flexible double-junction solar cell or a flexible triple-junction solar cell or a flexible single-junction gallium arsenide solar cell.

[0061] Based on the above, in one embodiment of the present application, the substrate includes a flexible substrate.

[0062] Based on the above content, in one embodiment of the present application, the flexible substrate includes a polyimide substrate or a Cu substrate.

[0063] Based on the above, in one embodiment of the present application, the connection portion (S6 / S7) includes a metal connection layer.

[0064] Based on the above, in one embodiment of the present application, the connection portion (S6 / S7) includes an Ag connection layer and / or a Cu connection layer.

[0065] Based on the above content, in one embodiment of the present application, the solar panel has four power generation areas S5.

[0066] Based on the above, in one embodiment of the present application, 60 bisectors along a first direction are formed on the surface of the solar cell panel with the center point of the intersection of two adjacent power generation areas S5 as the starting point; wherein the first direction is from the center of the ring to the edge of the solar cell panel, and the bisectors on the surface of the power generation area S5 constitute the secondary grid line S3.

[0067] Based on the above, in one embodiment of the present application, among all the bisecting lines, the widths of the 5th, 10th, 15th, 20th, 25th, 30th, 35th, 40th, 45th, 50th, 55th, and 60th bisecting lines, which are calculated from the center point of the boundary between two adjacent power generation areas S5 as the starting point, are relatively thicker than the widths of the other bisecting lines.

[0068] The utility model also provides a method for manufacturing a solar cell panel, which is used to manufacture any of the above-mentioned solar cell panels, and the manufacturing method comprises the following steps:

[0069] S01, providing a solar cell epitaxial structure S1 stacked on a surface of a growth substrate S0;

[0070] Specifically, the solar cell epitaxial structure S1 may include a flexible multi-junction gallium arsenide solar cell or a flexible single-junction gallium arsenide solar cell, such as a flexible double-junction solar cell or a flexible triple-junction solar cell or a flexible single-junction gallium arsenide solar cell, etc. Based on this, in one embodiment of the present application, in order to obtain the flexible cell, the growth substrate S0 is a GaAs substrate.

[0071] Based on the above, in a preferred embodiment of the present application, in order to obtain a flexible triple-junction solar cell, such as Figure 3 As shown, the solar cell epitaxial structure S1 includes an etching stop layer 16, an ohmic contact layer 15, a GaInP top cell 13, a tunnel junction 14, a GaAs middle cell 12, a tunnel junction 14, an InGaAs bottom cell 11 and an ohmic contact layer 15 which are sequentially stacked on the surface of a GaAs substrate S0; the present application does not impose any limitation on this.

[0072] S02, transferring the solar cell epitaxial structure S1 to a substrate S2, and peeling off the growth substrate S0, so that the bottom surface of the solar cell epitaxial structure S1 (i.e., the ohmic contact layer 15 close to the GaInP top cell 13) is exposed; thereby obtaining Figure 4 The structure shown.

[0073] Based on the above, in one embodiment of the present application, the substrate S2 includes a flexible substrate.

[0074] Specifically, the flexible substrate may be a polyimide substrate or Cu, and the thickness of the polyimide substrate or Cu is 20-50 μm.

[0075] Based on the above content, in one embodiment of the present application, the transfer of the solar cell epitaxial structure S1 is achieved through bonding or electroplating process.

[0076] S03, forming a transparent electrode or a metal electrode on the exposed surface of the solar cell epitaxial structure S1, wherein the transparent electrode or the metal electrode is a grid line structure;

[0077] Wherein, the transparent electrode includes one or more of an ITO electrode, an IZO electrode, an IGZO electrode, an AZO electrode and a graphene electrode; the metal electrode includes one or more of an Ag electrode, an Au electrode, a Cu electrode and an Au / Ag alloy electrode;

[0078] Furthermore, in order to achieve aesthetics for human eyes and avoid light shielding by the metal electrode, the width of the metal electrode is no more than 15 μm.

[0079] S04, forming an isolation groove by etching, wherein the isolation groove extends from the surface of the solar cell epitaxial structure S1 to the surface of the substrate S2, so that the solar cell epitaxial structure S1 forms a plurality of mutually independent sub-units;

[0080] Specifically, the isolation road is manufactured by ICP dry etching or solution wet etching or a dry-wet etching combined with etching process.

[0081] S05, dividing the subunits into a plurality of independent power generation areas S5 by laser cutting;

[0082] S06, such as Figure 1 As shown, the power generation area S5 is connected by connecting parts (S6 / S7) to form a ring shape.

[0083] Based on the above, in one embodiment of the present application, the grid line structure includes a main grid line S4 connecting the connection parts (S6 / S7) at both ends of the power generation area S5, and a secondary grid line S3 arranged to cross the main grid line S4.

[0084] Specifically, the line width of the main grid line S4 is 4-15 μm, the grid line spacing is 120-140 μm, and the line width of the auxiliary grid line S3 is 8-12 μm.

[0085] Based on the above, in one embodiment of the present application, along the direction from the center of the ring to the edge of the solar cell panel, the width of the main grid line gradually increases, or the distance between two adjacent main grid lines gradually decreases.

[0086] Based on the above content, in one embodiment of the present application, the solar panel has four power generation areas S5; with the intersection center point of two adjacent power generation areas S5 as the starting point, 60 bisectors along the first direction are formed on the surface of the solar panel; wherein, the first direction is from the annular center to the edge of the solar panel, and the bisectors on the surface of the power generation area S5 constitute the secondary grid line S3.

[0087] Based on the above, in one embodiment of the present application, among all the bisecting lines, the widths of the 5th, 10th, 15th, 20th, 25th, 30th, 35th, 40th, 45th, 50th, 55th, and 60th bisecting lines, which are calculated from the center point of the boundary between two adjacent power generation areas S5 as the starting point, are relatively thicker than the widths of the other bisecting lines.

[0088] The utility model also provides a wearable smart device, including a dial and a control circuit board S8 arranged below the surface, the edge of the dial is a solar cell panel as described in any one of the above items, and at least one of the connecting parts (S6 / S7) is connected to the control circuit board S8.

[0089] It should be noted that in order to make full use of the space of the wearable smart device and reduce its volume, in one embodiment of the present application, the shape of the solar panel matches the dial, that is, when the dial is round, oval, horseshoe-shaped or square, the solar panel is correspondingly in the shape of a circular ring, an oval ring, a horseshoe-shaped ring or a square ring.

[0090] The bisector S13 located above the connecting portion ( S6 / S7 ) can be realized through an additional processing technique, while the bisector located on the surface of the power generation area S5 is directly formed by the secondary grid line S3 .

[0091] As an embodiment of the present application, Figure 5 As shown, the dial is circular, and the solar panel is correspondingly circular, and the solar panel has four arc-shaped power generation areas S5. Assuming that the circumference of the circular ring is L, the bisector falls at the arc position of every L / 60, and the width of the bisector at the arc position of every L / 12 is thicker.

[0092] Based on the above, in one embodiment of the present application, the bisectors are used as second / minute hand indicator lines (first indicator lines S10); and among all the bisectors, the widths of the 5th, 10th, 15th, 20th, 25th, 30th, 35th, 40th, 45th, 50th, 55th, and 60th bisectors, which are calculated from the center point of the intersection of two adjacent power generation areas S5 as the starting point, are thicker than the widths of other bisectors, and serve as hour hand indicator lines (second indicator lines S11). In addition, the surface of each of the connecting parts (S6 / S7) is covered with a protective layer S9 of the same color as the power generation area S5.

[0093] Based on the above, in one embodiment of the present application, the bisector extends from a side of the solar panel close to the dial to an edge of the solar panel.

[0094] Through the above technical solution, it can be known that the solar cell panel provided by the utility model comprises a plurality of power generation areas S5 and a connection part (S6 / S7) arranged above the substrate, and the connection part (S6 / S7) is used to electrically connect the plurality of power generation areas S5 to each other; the power generation area S5 comprises a solar cell epitaxial structure S1 and a grid line structure arranged on the surface of the solar cell epitaxial structure S1, and the grid line structure forms contact with the connection part (S6 / S7); further, the solar cell panel has a plurality of power generation areas S5, and all power generation areas S5 are connected to form a ring through the corresponding connection parts (S6 / S7). Based on this, a ring-shaped solar cell panel can be obtained by splicing, without hollowing out the interior, which can reduce the waste of raw materials, improve the utilization rate of materials, and thus reduce costs. At the same time, by setting the gate line structure to form contact with the connecting part (S6 / S7), based on this, the connecting part (S6 / S7) can select two adjacent power generation areas S5 in series / parallel according to the requirements of the application environment for voltage and / or current, thereby realizing the diversification of output voltage / current.

[0095] Secondly, along the direction from the center of the ring to the edge of the solar panel, the width of the main grid line gradually increases, or the distance between two adjacent main grid lines gradually decreases. Based on this setting, the current collection effect at the edge of the solar panel can be increased, thereby effectively improving the photoelectric conversion efficiency of the solar panel.

[0096] Furthermore, by using flexible multi-junction gallium arsenide solar cells with high mass-to-power ratio, the weight of solar panels can be greatly reduced while increasing the output power of solar panels, which helps to use them as energy replenishment components for smart devices, especially portable devices.

[0097] The utility model also provides a method for manufacturing a solar cell panel, which, while achieving the above-mentioned beneficial effects, has a simple manufacturing process and is conducive to productization.

[0098] The utility model also provides a wearable smart device, comprising a dial and a control circuit board S8 arranged below the surface, the edge of the dial is any one of the solar panels described above, and at least one of the connecting parts (S6 / S7) is connected to the control circuit board S8. While the solar panel is used to replenish energy, the beneficial effects of the solar cell can also be achieved.

[0099] Furthermore, the solar panel is provided with four power generation areas S5; 60 bisectors along the first direction are formed on the surface of the solar panel with the center point of the intersection of two adjacent power generation areas S5 as the starting point; wherein the bisectors on the surface of the power generation area S5 constitute the secondary grid lines S3; among all the bisectors, the widths of the 5th, 10th, 15th, 20th, 25th, 30th, 35th, 40th, 45th, 50th, 55th, and 60th bisectors starting from the center point of the intersection of two adjacent power generation areas S5 are thicker than the widths of other bisectors. When the solar panel is applied to a wearable smart device, the bisectors can be used as second / minute hand indication lines; and among all the bisectors, the widths of the 5th, 10th, 15th, 20th, 25th, 30th, 35th, 40th, 45th, 50th, 55th, and 60th bisectors starting from the center point of the intersection of two adjacent power generation areas S5 are thicker than the widths of other bisectors, and can be used as hour hand indication lines. Thus, while the current density of the grid-line structure battery is used to improve the battery efficiency, the bisector can also be used as the indicator line of the hour hand / minute hand / second hand. Based on this setting, there is no need to make additional indicator lines on the dial, which reduces the production process of the wearable smart device and can effectively reduce the production cost. The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the various embodiments can be referred to each other.

[0100] It should also be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprises", "comprising" or any other variants thereof are intended to cover non-exclusive inclusion, so that an article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such article or device. In the absence of further restrictions, the elements defined by the sentence "comprising a ..." do not exclude the existence of other identical elements in the article or device including the above elements.

[0101] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A solar cell panel, comprising a solar cell, characterized in that: The solar cell includes a plurality of power generation areas and a connecting portion arranged above a substrate, wherein the connecting portion is used to electrically connect the plurality of power generation areas to each other; the power generation area includes a solar cell epitaxial structure and a grid line structure arranged on the surface of the solar cell epitaxial structure, wherein the grid line structure forms contact with the connecting portion.

2. The solar cell panel according to claim 1, characterized in that: The solar cell panel has a plurality of power generation areas, and all the power generation areas are connected to form a ring shape through the corresponding connection parts.

3. The solar cell panel according to claim 2, characterized in that: The grid line structure includes a main grid line of a connection portion connecting two ends of the power generation area, and a secondary grid line arranged to cross the main grid line.

4. The solar cell panel according to claim 3, characterized in that: Along the direction from the center of the ring to the edge of the solar cell panel, the width of the main grid line gradually increases, or the distance between two adjacent main grid lines gradually decreases.

5. The solar cell panel according to claim 3, characterized in that: The gate line structure includes a transparent electrode or a metal electrode; wherein the transparent electrode includes one or more stacks of ITO electrodes, IZO electrodes, IGZO electrodes, AZO electrodes and graphene electrodes; and the metal electrode includes one or more stacks of Ag electrodes, Au electrodes, Cu electrodes and Au / Ag alloy electrodes.

6. The solar cell panel according to claim 5, characterized in that: The width of the metal electrode is no greater than 15 μm.

7. The solar cell panel according to claim 1, characterized in that: The solar cell comprises a flexible multi-junction gallium arsenide solar cell or a flexible single-junction gallium arsenide solar cell.

8. The solar cell panel according to claim 1, characterized in that: The base plate includes a flexible substrate.

9. The solar cell panel according to claim 8, characterized in that: The flexible substrate includes a polyimide substrate or a Cu substrate.

10. The solar cell panel according to claim 1, characterized in that: The connection portion includes a metal connection layer.

11. The solar cell panel according to claim 1, characterized in that: The connection portion includes an Ag connection layer and / or a Cu connection layer.

12. The solar cell panel according to claim 3, characterized in that: The solar cell panel has four power generation areas.

13. The solar cell panel according to claim 12, characterized in that: Taking the intersection center point of two adjacent power generation areas as the starting point, 60 bisectors along the first direction are formed on the surface of the solar cell panel; wherein the first direction points from the annular center to the edge of the solar cell panel, and the bisectors on the surface of the power generation area constitute the secondary grid lines.

14. The solar cell panel according to claim 13, characterized in that: Among all the bisecting lines, the widths of the 5th, 10th, 15th, 20th, 25th, 30th, 35th, 40th, 45th, 50th, 55th and 60th bisecting lines, which are calculated from the center point of the boundary between two adjacent power generation areas, are thicker than those of the other bisecting lines.

15. A wearable smart device, comprising a dial and a control circuit board arranged below the surface, characterized in that: The dial edge is a solar cell panel as described in any one of claims 1 to 14, and at least one of the connecting parts is connected to the control circuit board.

16. The wearable intelligent device according to claim 15, characterized in that: The edge of the dial is the solar panel as claimed in claim 13, and the solar panel has four power generation areas; 60 bisectors along the first direction are formed on the surface of the solar panel with the center point of the intersection of two adjacent power generation areas as the starting point; wherein the first direction points from the center of the ring to the edge of the solar panel, and the bisectors on the surface of the power generation area constitute the secondary grid lines; Then, the bisectors serve as second / minute hand indicator lines; and among all the bisectors, the widths of the 5th, 10th, 15th, 20th, 25th, 30th, 35th, 40th, 45th, 50th, 55th, and 60th bisectors, which start from the center point of the intersection of two adjacent power generation areas, are thicker than those of the other bisectors, and serve as hour hand indicator lines.

17. The wearable smart device according to claim 16, characterized in that: The bisector extends from a side of the solar panel close to the dial to an edge of the solar panel.

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