Battery piece color detection device and photovoltaic module production system

Abstract

The utility model provides a battery piece color detection device and a photovoltaic module production system.The device comprises a case, a first mounting part and a second mounting part, the case is hollow, an opening is formed in the bottom wall of the case, the first mounting part is fixed to the top wall of the case and used for mounting a first shooting device, and the second mounting part is fixed to the top wall of the case and used for mounting a second shooting device; and the second mounting part is positioned in the case, is fixed on the side wall of the case and is used for mounting a second shooting device. The first shooting device and the second shooting device shoot the battery piece below the opening from different angles, and the shot battery piece images are used for battery piece color detection. According to the method, the image of the battery piece is shot, the color of the battery piece is detected according to the shot image, the shooting devices at different angles can provide a plurality of shot images, and therefore the detection precision of the color of the battery piece is improved. The colors of the battery pieces are accurately identified, so that the battery pieces within a certain color difference range are made into the photovoltaic module, the color consistency of the photovoltaic module is improved, and the competitiveness in the market is improved.

Description

Technical Field

[0001] This application belongs to the technical field of photovoltaic cells, and particularly relates to a device for detecting the color of battery wafers and a photovoltaic module production system. Background Art

[0002] Multiple photovoltaic cells can be made into a photovoltaic module to generate higher voltage and current. The preparation steps may include processes such as texturing, diffusion, cleaning, coating, printing, and encapsulation. Each process may have a certain impact on the color of the photovoltaic cells.

[0003] Due to the minute differences in the preparation processes, color differences may occur between photovoltaic cells, resulting in inconsistent overall colors of the photovoltaic modules made from multiple photovoltaic cells and reducing the competitiveness of the products in the market. Summary of the Utility Model

[0004] Embodiments of this application provide a device for detecting the color of battery wafers and a photovoltaic module production system to solve or alleviate one or more technical problems in the prior art.

[0005] As an aspect of the embodiments of this application, embodiments of this application provide a device for detecting the color of battery wafers, including:

[0006] A chassis, which is hollow inside, and an opening is provided on the bottom wall of the chassis;

[0007] A first mounting part, fixed to the top wall of the chassis, for mounting a first photographing device;

[0008] A second mounting part, located inside the chassis and fixed to the side wall of the chassis, for mounting a second photographing device;

[0009] Among them, the first photographing device is used to photograph the battery wafer located below the opening from a first angle, and the second photographing device is used to photograph the battery wafer from a second angle. The images of the battery wafer taken at different angles are used for detecting the color of the battery wafer.

[0010] Optionally, the first mounting part is used to adjust the photographing angle of the first photographing device, and the second mounting part is used to adjust the photographing angle of the second photographing device; among them:

[0011] The first photographing device mounted on the first mounting part is directly opposite to the opening;

[0012] The included angle between the second photographing device mounted on the second mounting part and the opening is 30° - 50°.

[0013] Optionally, the side wall includes opposite first side wall and second side wall;

[0014] The cell color detection device further includes a third mounting portion;

[0015] Wherein, the second mounting portion is located on the first side wall, and the third mounting portion is located on the second side wall;

[0016] The second mounting portion is used to fix the second photographing device;

[0017] The third mounting portion is used to fix the third photographing device.

[0018] Optionally, the second mounting portion includes a first adjustment shaft, and the second photographing device is mounted on the first adjustment shaft and can rotate around the first adjustment shaft;

[0019] The third mounting portion includes a second adjustment shaft, and the third photographing device is mounted on the second adjustment shaft and can rotate around the second adjustment shaft.

[0020] Optionally, a door panel structure is provided on the side wall of the chassis.

[0021] Optionally, a conveying mechanism is further included;

[0022] The conveying mechanism is located below the outside of the chassis and a part of the area is opposite to the opening, and is used to transfer the cells.

[0023] Optionally, a solid color bottom plate is further included;

[0024] The solid color bottom plate is located on the side of the conveying mechanism away from the opening.

[0025] Optionally, a light source is further included;

[0026] The light source is located inside the chassis and is arranged around the periphery of the opening.

[0027] Optionally, a light source controller is included;

[0028] The light source controller is electrically coupled to the light source and is used to control the turning on, turning off, and / or brightness of the light source.

[0029] Optionally, white rough substances are distributed on the inner wall of the chassis.

[0030] As another aspect of the embodiments of the present application, the embodiments of the present application further provide a photovoltaic module production system, including the cell color detection device according to any one of the above.

[0031] In the embodiments of the present application, an image of a battery cell is captured to detect the color of the battery cell according to the captured image. Imaging devices at multiple different angles can provide multiple captured images, thereby improving the detection accuracy of the color of the battery cell. Accurately identifying the color of the battery cell can fabricate battery cells with the same color or within a certain color difference range into a photovoltaic module, so as to improve the color consistency of the photovoltaic module and thus enhance the competitiveness of the photovoltaic module in the market.

[0032] The above summary is only for the purpose of the specification and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present application will be readily apparent by reference to the drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In the drawings, unless otherwise specified, the same reference numerals throughout the several views denote the same or similar components or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings only depict some embodiments disclosed in the present application and should not be regarded as limiting the scope of the present application.

[0034] Figure 1 is a schematic structural diagram of a device for detecting the color of a battery cell according to an embodiment of the present application;

[0035] Figure 2 is another schematic structural diagram of a device for detecting the color of a battery cell according to an embodiment of the present application.

[0036] DESCRIPTION OF THE REFERENCE NUMERALS

[0037] Chassis 10; First side wall 11; Second side wall 12; Bottom wall 13; Top wall 14; Opening 131; First mounting portion 141; Second mounting portion 111; Third mounting portion 121; First imaging device 145; Second imaging device 115; Third imaging device 125; Door panel structure 15; Conveyor mechanism 20; Solid color bottom plate 30; Light bar 41; Light source controller 45; Battery cell 90. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0038] The embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the drawings. In the drawings, for clarity, the dimensions of layers, regions, and elements, as well as their relative dimensions, may be exaggerated. Wherever the same or similar reference numerals are used throughout, they denote the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present application and should not be construed as limiting the present application.

[0039] It should be understood that when an element or layer is referred to as "on", "adjacent to", "connected to", or "coupled to" another element or layer, it can be directly on, adjacent to, connected, or coupled to the other element or layer, or there can be intervening elements or layers. In contrast, when an element is referred to as "directly on", "directly adjacent to", "directly connected to", or "directly coupled to" another element or layer, there are no intervening elements or layers. It should be understood that although the terms first, second, third, etc. may be used to describe various elements, components, regions, layers, and / or portions, these elements, components, regions, layers, and / or portions should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer, or portion from another element, component, region, layer, or portion. Thus, without departing from the teachings of the present disclosure, the first element, component, region, layer, or portion discussed below may be referred to as the second element, component, region, layer, or portion. And when discussing the second element, component, region, layer, or portion, it does not indicate that the present disclosure necessarily has a first element, component, region, layer, or portion.

[0040] In this application, unless otherwise clearly defined and limited, the terms "mounted", "connected", "connected to", "fixed", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0041] It should be noted that the terms "first", "second", etc. in the specification, claims, and above-mentioned drawings of this application are used to distinguish similar objects and do not necessarily have to be used to describe a specific order or sequence. It should be understood that these terms can be interchanged under appropriate circumstances so that the embodiments of the present application described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units does not have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products, or devices.

[0042] In this application, when it comes to numerical intervals (i.e., numerical ranges), unless otherwise specified, the distribution of the selectable numerical values within the numerical interval is considered continuous, and includes the two numerical endpoints of the numerical interval (i.e., the minimum value and the maximum value), as well as each numerical value between these two numerical endpoints. Unless otherwise specified, when the numerical interval only refers to the integers within the numerical interval, it includes the two endpoint integers of the numerical range, as well as each integer between the two endpoints, which is equivalent to directly listing each integer. When multiple numerical ranges are provided to describe features or characteristics, these numerical ranges can be combined. In other words, unless otherwise specified, the numerical ranges disclosed in this application should be understood to include any and all sub-ranges subsumed therein. The "numerical value" in the numerical interval can be any quantitative value, such as a number, a percentage, a ratio, etc. The "numerical interval" is allowed to broadly include quantitative intervals such as percentage intervals, ratio intervals, and ratio value intervals.

[0043] The embodiments of the present application provide a technical solution for a device for detecting the color of solar cells and a photovoltaic module production system. Based on this, the overall color consistency of photovoltaic modules made of multiple photovoltaic cells is improved. See the following for details.

[0044] Next, exemplary embodiments according to the present application will be described in more detail with reference to the accompanying drawings. It should be noted that these exemplary embodiments can be implemented in many different forms and should not be construed as being limited only to the embodiments set forth herein.

[0045] Please refer to Figure 1 and Figure 2 , the embodiments of the present application provide a device for detecting the color of solar cells, and the device includes a chassis 10, a first mounting portion 141, and a second mounting portion 111. The following is a detailed description:

[0046] The chassis 10 is provided with a hollow interior, and an opening 131 is formed in the bottom wall 13. The size of the opening 131 can be larger than the size of the solar cell, so as to be able to obtain a complete image of the solar cell 90 through the opening 131.

[0047] The first mounting portion 141 is fixed to the top wall 14 of the chassis 10 and is used for mounting the first photographing device 145.

[0048] The second mounting portion 111 is located inside the chassis 10 and is fixed to the side wall of the chassis 10, and is used for mounting the second photographing device 115.

[0049] The first photographing device 145 is used to photograph the solar cell 90 located below the opening 131 from a first angle, and the second photographing device 115 is used to photograph the solar cell 90 from a second angle. The images of the solar cell taken at different angles are used for detecting the color of the solar cell. The first photographing device 145 and the second photographing device 115 can be devices such as cameras and webcams.

[0050] Due to factors such as the shooting angle, reflection, or the surface structure of the battery cell, the colors of the images captured at different angles may be different. By integrating the image information from different angles, the color deviation can be corrected more accurately, and the accuracy of the battery cell color detection can be improved.

[0051] Exemplarily, the image of the battery cell 90 captured by the first shooting device 145 is the first color, and the color of the battery cell 90 captured by the second shooting device 115 is the second color. The second color may be the same as or different from the first color. When the second color is different from the first color, the color values of the first color and the second color can be calculated according to specific weights to obtain a third color, which can better conform to the true color of the battery cell.

[0052] In the embodiment of the present application, the images of the battery cell are captured to detect the color of the battery cell according to the captured images. Multiple shooting devices at different angles can provide multiple captured images, thereby improving the detection accuracy of the battery cell color. Accurately identifying the color of the battery cell can make battery cells with the same or within a certain color difference range into photovoltaic modules, so as to improve the color consistency of the photovoltaic modules, and thus enhance the competitiveness of the photovoltaic modules in the market.

[0053] In one embodiment, the first mounting portion 141 is used to adjust the shooting angle of the first shooting device 145, and the second mounting portion 111 is used to adjust the shooting angle of the second shooting device 115.

[0054] The first shooting device 145 mounted on the first mounting portion 141 is directly opposite to the opening 131, that is, the first shooting device 145 is located on the normal line of the opening 131, and the included angle between the second shooting device 115 mounted on the second mounting portion 111 and the opening 131 is 30° - 50°.

[0055] The first shooting device 145 shooting vertically can capture the front image of the battery cell and reduce the interference of direct reflected light. The second shooting device 115 shooting at an included angle of 30° - 50° can capture the reflected light and surface details at different angles, and supplement the information that the first shooting device 145 may miss. For example, there may be tiny defects or uneven parts on the surface of the battery cell. The light and shadow performances of such defects or uneven parts are different at different angles. Therefore, the second shooting device 115 shooting obliquely can better identify and capture the defects or uneven parts.

[0056] Further, the side wall includes opposite first side wall 11 and second side wall 12, and the battery cell color detection device further includes a third mounting portion 121.

[0057] The second mounting portion 111 is located on the first side wall 11, and the third mounting portion 121 is located on the second side wall 12. The second mounting portion 111 is used to fix the second photographing device 115, and the third mounting portion 121 is used to fix the third photographing device 125.

[0058] The third photographing device 125 can also be a camera or a camera head. The included angle between the third photographing device 125 mounted on the third mounting portion 121 and the opening 131 can also be 30° - 50°. That is, the third photographing device 125 and the second photographing device 115 respectively photograph images from both sides of the battery cell, further improving the color recognition accuracy of the battery cell.

[0059] In one embodiment, the first mounting portion 141, the second mounting portion 111, and the third mounting portion 121 can be angle adjustment devices, such as a universal joint structure, a slide rail structure, an adjustment shaft, etc., to adjust the orientation or angle of the corresponding photographing device through such structures. It can be understood that the first photographing device 145 mounted on the first mounting portion 141 is directly opposite to the opening 131, and the angle adjustment device can also be omitted.

[0060] Exemplarily, the second mounting portion 111 can include a first adjustment shaft, and the second photographing device 115 is mounted on the first adjustment shaft and can rotate around the first adjustment shaft. The third mounting portion 121 can include a second adjustment shaft, and the third photographing device 125 is mounted on the second adjustment shaft and can rotate around the second adjustment shaft.

[0061] The angle of the second photographing device 115 can be adjusted through the first adjustment shaft, and the angle of the third photographing device 125 can be adjusted through the second adjustment shaft, reducing the influence of light and reflected light on the photographed image, thereby improving the quality of the photographed image and the accuracy of color detection.

[0062] Moreover, the first adjustment shaft / second adjustment shaft mounts the corresponding photographing device. For different types of battery cell detection requirements, angle adjustment can be used to achieve it, improving the application range and flexibility of the device.

[0063] The first adjustment shaft and the second adjustment shaft can also be controlled by a driving motor. When photographing, the driving motor drives the first adjustment shaft and the second adjustment shaft to rotate slightly, so that the second photographing device 115 and the third photographing device 125 photograph images of multiple angles of the battery cell during rotation for color detection use, further improving the accuracy of battery cell color detection.

[0064] In one embodiment, a door panel structure 15 is further provided on the side wall of the chassis 10. In this embodiment, the door panel structure 15 is opened on the first side wall 11. When maintaining or repairing the chassis 10, the door panel structure 15 can be opened to operate on the interior of the chassis 10. When taking images of the battery cells, the door panel structure 15 is closed to prevent dust and impurities from possibly entering the interior of the chassis 10, and the closing of the door panel can prevent the entry of ambient light, thereby avoiding interference of the ambient light on the captured images.

[0065] In one embodiment, the battery cell color detection device further includes a conveying mechanism 20. The conveying mechanism 20 is located below the chassis 10 outside and a part of the area is directly opposite to the opening 131 for transferring the battery cells.

[0066] Multiple battery cells to be detected for color can be sequentially placed on the conveying mechanism 20. After the battery cells are moved to below the opening 131 of the box body by the conveying mechanism 20, the movement is paused. After multiple imaging devices take sufficient images of the battery cell, the movement continues to move the next battery cell to be detected for color to below the opening 131 of the box body.

[0067] Furthermore, in this embodiment, a solid color bottom plate 30 is further provided on the side of the conveying mechanism 20 far away from the opening 131. The width of the conveying mechanism 20 can be smaller than the width of the battery cell to reduce the area where the conveying mechanism 20 blocks the bottom plate.

[0068] Since the opening 131 of the box body is larger than the battery cell 90, in the captured images of the battery cell, the color of the solid color bottom plate 30 can fill the gap between the battery cell and the opening 131 of the box body, thereby effectively filtering out the cluttered background, eliminating background miscellaneous colors or patterns, reducing the interference to color detection, and enabling the imaging device to more accurately capture and identify the color of the battery cell. Moreover, the solid color bottom plate 30 can be used as a unified reference color. Battery cells of different colors are captured against the same background, which can facilitate color difference analysis and detection more easily.

[0069] Preferably, the color of the solid color bottom plate 30 can be white. Since the color of the battery cell is usually bluish or purplish, white can provide good contrast, making the boundary and color features of the battery cell more obvious, making the captured images of the battery cell clearer and facilitating detection.

[0070] The solid color bottom plate 30 can also be other colors, such as yellow, red, etc. Specifically, it can be selected according to the type or the color bias of the battery cell, and preferably a color with an obvious color difference from the color of the battery cell.

[0071] In this embodiment, the battery cell color detection device further includes a light source. The light source is located inside the chassis 10 and is arranged around the periphery of the opening 131.

[0072] The light source can be used to illuminate the battery cells to ensure sufficient brightness when photographing the battery cells, and the illumination inside the chassis 10 can make the light-receiving conditions of multiple battery cells relatively close when being photographed, thereby reducing the problem of inconsistent colors of the photographed images caused by the influence of ambient light.

[0073] Specifically, the light source can be four LED light strips 41, and the four LED light strips 41 respectively surround the four sides of the opening 131. In other embodiments, the light source can also be one LED light strip 41, and one LED light strip 41 is bent into a circle or an ellipse to surround the opening 131 of the chassis 10.

[0074] Furthermore, in this embodiment, the battery cell color detection device further includes a light source controller 45, and the light source controller 45 is electrically coupled to the light source for controlling the turning on, turning off, and / or brightness of the light source.

[0075] By adjusting the brightness of the light source, the light source controller 45 can optimize the lighting conditions to adapt to different types and colors of battery cells. Moreover, the light source controller 45 can provide a stable lighting environment by adjusting the light source, optimize the lighting conditions, reduce reflection and glare, improve the quality of the photographed images, and achieve dynamic adjustment of the shooting environment. When it is not necessary to photograph the images of the battery cells, the light source can be controlled to turn off to save energy.

[0076] In the case where the light source includes multiple light strips 41, the light source controller 45 can also achieve the required illumination intensity or lighting conditions by turning on or off some of the light strips 41.

[0077] In order to further improve the quality of the photographed images of the battery cells, in this embodiment, white rough substances are distributed on the inner wall of the chassis 10.

[0078] White has a high reflectivity, which can better utilize the light emitted by the light source and improve the overall brightness inside the chassis 10. And because the surface of the white rough substances is uneven, it can enhance the diffuse reflection of light and improve the uniformity of the illumination intensity, thereby improving the quality and consistency of the photographed images.

[0079] After photographing the images of the battery cells, the terminal of the battery cell color detection device will perform color recognition on the photographed images. A separating gripper arm (not shown in the figure) is provided at the end of the conveying mechanism 20, and the separating gripper arm is used to classify and store the battery cells within a certain color difference range.

[0080] Exemplarily, the colors of the images captured by the first imaging device 145 and the second imaging device 115 for the cell numbered A1 are B100 and B100 respectively. After processing, the system terminal marks the color of the cell numbered A1 as B100. After the cell moves to the end of the transfer mechanism 20, it is grabbed by the picking manipulator and placed in the storage area corresponding to B100. The storage area can contain only a single color, or it can contain colors within a certain range. For example, cells with colors from B100 to B120 are stored in the same area.

[0081] The present application also provides a photovoltaic module production system, including any one of the above cell color detection devices.

[0082] The photovoltaic module production system may further include an assembly component. After the cell color detection device performs color detection and classification storage on multiple cells, the assembly component can assemble cells with the same color or within a certain color difference range into a photovoltaic module, so that the color difference between multiple cells in the assembled photovoltaic module is small, improving the color consistency of the photovoltaic module, and thus enhancing the competitiveness of the photovoltaic module in the market.

[0083] It should be noted that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application. The orientation terms "inner" and "outer" refer to the inside and outside relative to the contour of each component itself. For example, if the device in the drawing is inverted, the device described as "above other devices or structures" or "on top of other devices or structures" will be positioned as "below other devices or structures" or "beneath other devices or structures" afterwards. Thus, the exemplary term "above..." can include both "above..." and "below...". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding explanations are made for the relative spatial descriptions used here.

[0084] It should also be noted that the "one embodiment", "another embodiment", "embodiment", etc. mentioned in this application refer to the specific features, structures or characteristics described in connection with that embodiment being included in at least one embodiment generally described in this application. The same expression appearing in multiple places in the specification does not necessarily refer to the same embodiment. Further, when describing a specific feature, structure or characteristic in connection with any one embodiment, it is intended that the implementation of such feature, structure or characteristic in connection with other embodiments also falls within the scope of this application.

[0085] In the above embodiments, the descriptions of the respective embodiments have their own focuses. For the parts not described in detail in a certain embodiment, reference may be made to the relevant descriptions of other embodiments.

[0086] It should also be noted that the above are only the preferred embodiments of this application, and do not limit the scope of patent protection of this application. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of this application, or directly or indirectly applied in other related technical fields, shall similarly be included in the scope of patent protection of this application.

Claims

1. A device for detecting the color of a battery cell, characterized in that, Comprising: A chassis, which is hollow inside, and an opening is provided on the bottom wall of the chassis; A first mounting part, fixed on the top wall of the chassis, for mounting a first photographing device; A second mounting part, located inside the chassis and fixed on the side wall of the chassis, for mounting a second photographing device; Wherein, the first photographing device is used to photograph a solar cell located below the opening from a first angle, and the second photographing device is used to photograph the solar cell from a second angle, and the solar cell images photographed at different angles are used for solar cell color detection.

2. The solar cell color detection device according to claim 1, wherein The first mounting part is used to adjust the photographing angle of the first photographing device, and the second mounting part is used to adjust the photographing angle of the second photographing device; wherein: The first photographing device mounted on the first mounting part is directly opposite to the opening; The included angle between the second photographing device mounted on the second mounting part and the opening is 30° - 50°.

3. The solar cell color detection device according to claim 2, wherein The side wall includes opposite first side wall and second side wall; The solar cell color detection device further includes a third mounting part; Wherein, the second mounting part is located on the first side wall, and the third mounting part is located on the second side wall; The second mounting part is used to fix the second photographing device; The third mounting part is used to fix a third photographing device.

4. The solar cell color detection device according to claim 3, wherein The second mounting part includes a first adjusting shaft, and the second photographing device is mounted on the first adjusting shaft and can rotate around the first adjusting shaft; The third mounting part includes a second adjusting shaft, and the third photographing device is mounted on the second adjusting shaft and can rotate around the second adjusting shaft.

5. The solar cell color detection device according to claim 1, characterized in that, A door panel structure is provided on the side wall of the chassis.

6. The solar cell color detection device according to claim 1, characterized in that It further includes a conveying mechanism; The conveying mechanism is located below the outside of the chassis and a part of the area is directly opposite to the opening, for transferring solar cells.

7. The solar cell color detection device according to claim 6, wherein It further includes a solid color bottom plate; The solid color bottom plate is located on the side of the conveying mechanism away from the opening.

8. The solar cell color detection device according to any one of claims 1 to 7, characterized in that It further includes a light source; The light source is located inside the chassis and is arranged around the periphery of the opening.

9. The solar cell color detection device according to claim 8, characterized in that, It further includes a light source controller; The light source controller is electrically coupled to the light source, for controlling the turning on, turning off, and / or brightness of the light source.

10. The solar cell color detection device according to any one of claims 1 to 7, characterized in that White rough substances are distributed on the inner wall of the chassis.

11. A photovoltaic module production system, characterized in that, Comprising the solar cell color detection device according to any one of claims 1 - 10.

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