Vehicle solar panel

Abstract

To provide an on-vehicle solar panel that can reduce the influence on the air resistance coefficient of a vehicle and also reduce the influence on the overall appearance of the vehicle. [Solution] The vehicle-mounted solar panel of the present invention includes a first solar panel and a second solar panel. The first solar panel includes a first positive electrode current collector and a first negative electrode current collector. A first protective layer is formed on the first positive electrode current collector and the first negative electrode current collector, respectively. The second solar panel includes a second positive electrode current collector and a second negative electrode current collector. A second protective layer is formed on the second positive electrode current collector and the second negative electrode current collector, respectively. The first solar panel is joined to the second solar panel, and at least one metal piece and solder are used to electrically connect the first positive electrode current collector and the second negative electrode current collector, or to electrically connect the second positive electrode current collector and the first negative electrode current collector.

Description

[Technical Field]

[0001] The present invention relates to a solar panel, and more particularly to an in-vehicle solar panel that is mounted on a vehicle. [Background technology]

[0002] Solar panels, also known as photovoltaic panels, are devices that convert sunlight into electricity, and their core technology is based on the photoelectric effect. Solar technology has advanced significantly since the development of the first commercial solar cell at Bell Labs in the mid-20th century. Early solar panels were inefficient and expensive, so they were only used in aerospace and specialized installations. However, as semiconductor manufacturing technology matures, and global interest and policy promotion in renewable energy drives, the conversion efficiency of solar panels has improved from the single digits in the early days to over 20% that current commercial panels reach, and even reaching over 40% in laboratories. As manufacturing costs decrease year by year with large-scale production and material innovations, solar energy is becoming an increasingly competitive clean energy option. In recent years, new types of products such as soft solar panels and transparent solar energy glass have appeared, and their application scenarios have expanded to include architectural integration, portable equipment, and transportation.

[0003] With the development of electric vehicle technology, the concept of energy independence by combining solar energy is gaining importance. Mounting solar panels on the surface of a car, such as the roof or hood, is an innovative way to increase range and reduce dependence on external power. Such designs can already be seen in some commercial and concept electric vehicles, such as the Toyota Prius Prime, South Korea's Hyundai Sonata Hybrid and Europe's Lightyear One. These cars continue to charge via solar panels while stationary or in motion, powering auxiliary systems (e.g. ventilation or lighting) or powering the battery system, thus increasing their range by several kilometers per day. Furthermore, with the rise of campervans, solar panels have become a much-needed energy source for camping, providing campers with basic electricity in remote areas or during power outages. These applications mentioned above not only enhance vehicle autonomy, but also align with the future of transportation and the development trend of low carbon emissions. Summary of the Invention [Problem to be solved by the invention]

[0004] Although solar panels can be installed on cars to provide an auxiliary energy source, there are still many limitations in practical applications. First, the usable area of ​​the vehicle body is limited and the surface has a large curvature, making it difficult to install solar panels, so the most common installation method currently is to install the solar panels on the roof. However, because cars travel at very high speeds, when installing solar panels on the roof, in addition to considering the issue of fixing the panels, it is also necessary to consider fitting the solar panels to the roof shape as closely as possible to reduce the impact on the car's air resistance coefficient and minimize the impact on the overall appearance of the car.

[0005] For these reasons, it is an important task to provide an on-vehicle solar panel that can reduce the impact on the vehicle's air resistance coefficient and also reduce the impact on the overall appearance of the vehicle.

[0006] The purpose of the present invention is to provide an on-vehicle solar panel that can reduce the impact on the air resistance coefficient of the vehicle and also reduce the impact on the overall appearance of the vehicle.

[0007] To achieve the above object, the present invention provides a solar panel for a vehicle, which includes a first solar panel and a second solar panel. The first solar panel includes a first positive electrode current collecting conductive material and a first negative electrode current collecting conductive material formed on a first substrate. A first protective layer is formed on the first positive electrode current collecting conductive material and the first negative electrode current collecting conductive material, respectively, so that the first positive electrode current collecting conductive material and the first negative electrode current collecting conductive material are enclosed between the first substrate and the first protective layer. The second solar panel includes a second positive electrode current collecting conductive material and a second negative electrode current collecting conductive material formed on a second substrate. A second protective layer is formed on the second positive electrode current collecting conductive material and the second negative electrode current collecting conductive material, respectively, so that the second positive electrode current collecting conductive material and the second negative electrode current collecting conductive material are enclosed between the second substrate and the second protective layer. The first solar panel is joined to the second solar panel, and at least one metal piece and solder are used to electrically connect the first positive electrode current collector conductive material and the second negative electrode current collector conductive material, or to electrically connect the second positive electrode current collector conductive material and the first negative electrode current collector conductive material.

[0008] In one embodiment, a first protective layer and a second protective layer located above the first positive electrode current collecting conductive material and the second negative electrode current collecting conductive material are provided with notches, respectively, and the two notches form receiving spaces for receiving metal pieces and solder. The metal piece and the solder electrically connect the corresponding ends of the first positive electrode current collecting conductive material and the second negative electrode current collecting conductive material.

[0009] In one embodiment, the first protective layer and the second protective layer located above the second positive electrode current collecting conductive material and the first negative electrode current collecting conductive material are respectively provided with notches, and the two notches form receiving spaces for receiving metal pieces and solder. Furthermore, the metal piece and the solder electrically connect the ends of the second positive electrode current collector and the first negative electrode current collector corresponding to each other.

[0010] In one embodiment, the thickness of the metal piece is between 0.3 mm and 1.5 mm.

[0011] In one embodiment, an electrode extending conductive material for circuit extension is formed on the first substrate of the first solar panel.

[0012] In one embodiment, the vehicle-mounted solar panel of the present invention further includes a third solar panel. The third solar panel includes a third substrate, and a third positive electrode current collecting conductive material and a third negative electrode current collecting conductive material formed on the third substrate. A third protective layer is formed on the third positive electrode current collecting conductive material and the third negative electrode current collecting conductive material, respectively, so that the third positive electrode current collecting conductive material and the third negative electrode current collecting conductive material are enclosed between the third substrate and the third protective layer.

[0013] In one embodiment, the first solar panel is joined to a third solar panel, and the electrode extension conductive material is electrically connected to the third positive electrode current collector conductive material or the third negative electrode current collector conductive material by at least another metal piece and another solder.

[0014] In one embodiment, a separate notch is provided in the first protective layer located on the electrode extension conductive material, and a separate notch is provided in the third protective layer located above the third positive electrode current collector conductive material or the third negative electrode current collector conductive material, and the two separate notches form separate receiving spaces for receiving separate metal pieces and separate solders. The electrode extension conductive material and the end corresponding to the third positive electrode current collecting conductive material or the third negative electrode current collecting conductive material are electrically connected by the other metal piece and the other solder.

[0015] In one embodiment, the thickness of the separate metal piece is between 0.3 mm and 1.5 mm.

[0016] As described above, the solar panel for vehicles of this invention is joined to the roof using metal pieces and solder, and after joining, the solar panel can be mounted flat on the roof, which not only reduces the impact on the vehicle's air resistance coefficient but also reduces the impact on the overall appearance of the vehicle. [Brief explanation of the drawings]

[0017] [Figure 1] FIG. 10 is a diagram showing the joining of multiple solar panels. [Figure 2] 2 is a cross-sectional view taken along the line A1-A1 in FIG. 1 when the first solar panel and the second solar panel are not yet joined together. [Figure 2A] 1. FIG. 4 is a diagram showing another cross section along the A1-A1 direction of FIG. 1 when the first solar panel and the second solar panel are not yet joined together. [Figure 2B] 2 is a cross-sectional view taken along the line A2-A2 in FIG. 1 when the first solar panel and the second solar panel are not yet joined together. [Figure 3A] 2 is a cross-sectional view taken along the A1-A1 direction in FIG. 1 after the first solar panel and the second solar panel have been joined together. [Figure 3B] 1. FIG. 4 is a diagram showing another cross section taken along the A1-A1 direction in FIG. 1 after the first solar panel and the second solar panel have been joined together. [Figure 4] 2 is a cross-sectional view taken along the line BB in FIG. 1 after the first solar panel and the third solar panel have been joined together. [Figure 5] FIG. 10 shows multiple solar panels joined together and then attached to a roof. DETAILED DESCRIPTION OF THE INVENTION

[0018] Specific embodiments of the present invention will be described below with reference to the drawings.

[0019] As shown in FIG. 1, the vehicle-mounted solar panel of the present invention includes at least a first solar panel 1 and a second solar panel 2. The first solar panel 1 comprises a first substrate 10, a plurality of first power conversion units 11 formed on the first substrate 10, at least a first positive electrode current collecting conductive material 12, and at least a first negative electrode current collecting conductive material 13. These first power conversion units 11 are electrically connected in series, and the positive poles of these first power conversion units 11 are connected to the first positive electrode current collecting conductive material 12, and the negative poles are connected to the first negative electrode current collecting conductive material 13. It is particularly important to note that in this embodiment, the first positive electrode current collector conductor 12 includes a first positive electrode current collector conductor 12' that is elongated to facilitate soldering, and the first negative electrode current collector conductor 13 includes a first negative electrode current collector conductor 13' that is elongated to facilitate soldering.

[0020] Also, as shown in FIG. 1, the second solar panel 2 includes a second substrate 20, a plurality of second power conversion units 21 formed on the second substrate 20, at least a second positive electrode current collecting conductive material 22, and at least a second negative electrode current collecting conductive material 23. These second power conversion units 21 are electrically connected in series, and the positive poles of these second power conversion units 21 are connected to the second positive electrode current collecting conductive material 22, and the negative poles are connected to the second negative electrode current collecting conductive material 23. It is particularly important to note that in this embodiment, the second positive electrode current collecting conductor 22 includes a second positive electrode current collecting conductor 22' that is elongated to facilitate soldering, and the second negative electrode current collecting conductor 23 includes a second negative electrode current collecting conductor 23' that is elongated to facilitate soldering.

[0021] FIG. 2 is a cross-sectional view taken along the line A1-A1 in FIG. 1 when the first solar panel 1 and the second solar panel 2 are not yet joined together. As shown in FIG. 2, the first protective layer 15 and the second protective layer 25 located above the first positive electrode current collecting conductive material 12′ (12) and the second negative electrode current collecting conductive material 23′ (23) are provided with notches 151 and 251, respectively, and the two notches 151 and 251 form storage spaces for accommodating the metal piece 41 and the solders 16 and 26.

[0022] See also Figures 2A and 2B. 2A and 2B are cross-sectional views taken along the lines A1-A1 and A2-A2 when the first solar panel 1 and the second solar panel 2 are not yet joined together. As shown in FIGS. 2A and 2B, the first positive electrode current-collecting conductive material 12, 12' and the first negative electrode current-collecting conductive material 13, 13' are provided with a first protective layer 15, respectively. The second positive electrode current-collecting conductive material 22, 22' and the second negative electrode current-collecting conductive material 23, 23' are provided with a second protective layer 25, respectively. As shown in Figures 2A and 2B, when the two solar panels are not yet soldered together, the first positive electrode current collecting conductor 12' or the first negative electrode current collecting conductor 13' of the first solar panel 1 is provided with solder 16, respectively. The second positive electrode current collecting conductor 22' or the second negative electrode current collecting conductor 23' of the second solar panel 2 is also provided with solder 26, respectively.

[0023] FIG. 3A is a diagram showing a cross section taken along the cross section line A1-A1 after the first solar panel 1 and the second solar panel 2 have been joined together. As shown in FIG. 3A, the first positive electrode current collecting conductive material 12′ of the first solar panel 1 is electrically connected to the second negative electrode current collecting conductive material 23′ of the second solar panel 2 by the metal piece 41 and the solder 612 formed after the solder 16 and the solder 26 are melted. Of course, the method of connecting the cross-sectional line A2-A2 is similar, so it will not be explained again. It is particularly important to note here that, in order to make the soldered portion flatter, if the thickness h2 of each of the protective layers 15 and 25 is increased slightly (i.e., h2>h1), as shown in FIG. 3B, the soldered solder 612 will become flatter. Furthermore, in this embodiment, the thickness of the metal piece 41 is preferably between 0.3 mm and 1.5 mm.

[0024] As further shown in FIG. 1, the vehicle-mounted solar panel of the present invention further includes a third solar panel 3. The third solar panel 3 comprises a third substrate 30, a plurality of third power conversion units 31 each formed on the third substrate 30, at least a third positive electrode current collecting conductive material 32, and at least a third negative electrode current collecting conductive material 33. These third power conversion units 31 are electrically connected in series, and the positive poles of these third power conversion units 31 are connected to the third positive electrode current collecting conductive material 32, and the negative poles are connected to the third negative electrode current collecting conductive material 33. At this time, an electrode extension conductive material 14 for circuit extension is formed on the first substrate 10 of the first solar panel 1.

[0025] Furthermore, as shown in FIG. 4 , a third protective layer 35 is formed on the third positive electrode current collecting conductive material 32 and the third negative electrode current collecting conductive material 33, respectively, so that the third positive electrode current collecting conductive material 32 and the third negative electrode current collecting conductive material 33 are enclosed between the third substrate 30 and the third protective layer 35. FIG. 4 is a diagram showing a cross section of the first solar panel 1 and the second solar panel 2 after they have been joined together along the cross section line BB. As shown in FIG. 4, the electrode extension conductive material 14 of the first solar panel 1 is electrically connected to the third positive electrode current collecting conductive material 32 of the third solar panel 3 by another metal piece 42 and the solder 16 and solder 613 formed by melting the solder (not shown in the figure).

[0026] FIG. 5 shows how multiple solar panels are joined together and then attached to a roof.

[0027] To sum up, the solar panel for vehicle use of the present invention is joined to the metal pieces 41, 42 and the solder 612, 613, and after joining, the solar panel can be mounted flat on the roof. This not only reduces the impact on the car's air resistance coefficient, but also reduces the impact on the car's overall appearance.

[0028] The solar panel for vehicle use in this invention is joined by metal pieces and solder, and after joining, the solar panel can be mounted flat on the roof, which not only reduces the impact on the vehicle's air resistance coefficient but also reduces the impact on the overall appearance of the vehicle. [Explanation of symbols]

[0029] 1. First solar panel 10 First board 11 First power conversion unit 12, 12' First positive electrode current collector conductive material 13, 13' First negative electrode current collecting conductive material 14 Electrode stretched conductive material 15 1st protective layer 151, 251 Missing edge 16, 26 solder 2 Second solar panel 20 Second board 21 Second power conversion unit 22, 22' Second positive electrode current collecting conductive material 23, 23' Second negative electrode current collecting conductive material 25 Second protective layer 3. Third solar panel 30 Third board 31 Third power conversion unit 32 Third positive electrode current collector conductive material 3 33 Third negative electrode current collector conductive material 35 Third protective layer 41, 42 Metal piece 612, 613 Solder h1, h2 thickness

Claims

1. a first solar panel including a first substrate; and a first positive electrode current collecting conductive material and a first negative electrode current collecting conductive material formed on the first substrate, wherein first protective layers are formed on the first positive electrode current collecting conductive material and the first negative electrode current collecting conductive material, respectively, such that the first positive electrode current collecting conductive material and the first negative electrode current collecting conductive material are enclosed between the first substrate and the first protective layers; a second solar panel including a second substrate; and a second positive electrode current collecting conductive material and a second negative electrode current collecting conductive material formed on the second substrate, wherein second protective layers are formed on the second positive electrode current collecting conductive material and the second negative electrode current collecting conductive material, respectively, such that the second positive electrode current collecting conductive material and the second negative electrode current collecting conductive material are enclosed between the second substrate and the second protective layers, The first solar panel is joined to the second solar panel, and the first positive electrode current collector and the second negative electrode current collector are electrically connected by at least one metal piece and solder, or the second positive electrode current collector and the first negative electrode current collector are electrically connected by at least one metal piece and solder. Solar panels for cars.

2. The first protective layer and the second protective layer, which are located above the first positive electrode current collecting conductive material and the second negative electrode current collecting conductive material, respectively, have openings formed therein, and the openings form receiving spaces for receiving the metal pieces and the solder, and the corresponding ends of the first positive electrode current collecting conductive material and the second negative electrode current collecting conductive material are electrically connected by the metal pieces and the solder. The solar panel for vehicle use according to claim 1 .

3. The first protective layer and the second protective layer, which are located above the second positive electrode current collecting conductive material and the first negative electrode current collecting conductive material, respectively, have openings formed therein, and the openings form receiving spaces for receiving the metal pieces and the solder, and the second positive electrode current collecting conductive material and the first negative electrode current collecting conductive material are electrically connected to corresponding ends of the second positive electrode current collecting conductive material and the first negative electrode current collecting conductive material by the metal pieces and the solder. The solar panel for vehicle use according to claim 1 .

4. The thickness of the metal piece is between 0.3 mm and 1.5 mm. The solar panel for vehicle use according to claim 1 .

5. The first solar panel is characterized in that an electrode extension conductive material for circuit extension is formed on the first substrate of the first solar panel. The solar panel for vehicle use according to claim 1 .

6. The vehicle-mounted solar panel further includes a third substrate, a third positive electrode current collector conductive material and a third negative electrode current collector conductive material formed on the third substrate, and a third protective layer is formed on the third positive electrode current collector conductive material and the third negative electrode current collector conductive material, respectively, so that the third positive electrode current collector conductive material and the third negative electrode current collector conductive material are enclosed between the third substrate and the third protective layer. The solar panel for vehicle use according to claim 5.

7. The first solar panel is joined to the third solar panel, and the electrode extension conductive material is electrically connected to the third positive electrode current collecting conductive material or the third negative electrode current collecting conductive material by at least another metal piece and another solder. The solar panel for vehicle use according to claim 6.

8. The first protective layer located on the electrode extension conductive material and the third protective layer located above the third positive electrode current collecting conductive material or the third negative electrode current collecting conductive material are each provided with a separate notch, and the two separate notches form separate accommodation spaces for accommodating the separate metal pieces and the separate solder, and the electrode extension conductive material and an end corresponding to the third positive electrode current collecting conductive material or the third negative electrode current collecting conductive material are electrically connected by the separate metal pieces and the separate solder. The solar panel for vehicle use according to claim 7.

9. Another feature of the metal piece is that its thickness is between 0.3 mm and 1.5 mm. The solar panel for vehicle use according to claim 7.

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