Measuring device and photovoltaic system

Abstract

The utility model provides a measuring device and a photovoltaic system, and relates to the field of photovoltaic technology, the measuring device comprises a base, an upper cover and a photosensitive member, the base is used for being connected with a photovoltaic panel or a photovoltaic support, the photosensitive member is connected to the base, scales are arranged on the base at the circumferential position of the photosensitive member, and the upper cover is connected with the photosensitive member. The upper cover is detachably connected with the base and covers the base, and a light hole is formed in one end face, opposite to the photosensitive part, of the upper cover. Through the structural arrangement, the measuring device is simple in structure and convenient to assemble, the installation deviation angle of a photovoltaic panel or a photovoltaic support in a photovoltaic system can be accurately and effectively measured through the simple structure, and cost is saved.

Description

Technical Field

[0001] The present application relates to the technical field of photovoltaic technology, and more particularly, to a measuring device and a photovoltaic system. Background Art

[0002] In a photovoltaic system, during the installation, adjustment, and maintenance of a photovoltaic panel, the perpendicularity of the photovoltaic panel to the light rays at noon, that is, the incident rays of the light with the strongest local light intensity, will directly affect the power generation efficiency of the photovoltaic power generation, and the accuracy of the installation, adjustment, and maintenance of the bracket for carrying and installing the photovoltaic panel, such as a tracking bracket or a photovoltaic bracket, for example, whether it is installed due south and due north, also directly affects the power generation efficiency of the photovoltaic power generation. Therefore, during the installation and maintenance of the photovoltaic system, it is necessary to measure the perpendicularity of the photovoltaic panel to the incident rays of the noon light and the deviation angle of the photovoltaic bracket from due south and due north.

[0003] In the prior art, the measuring device for achieving the above purpose generally measures through electrical components, such as sensors, etc. Such a measuring device generally has a relatively complex structure, a high cost, and is not convenient to operate. For some relatively simple measuring devices, their measurement accuracy is generally not precise enough, and they are often affected by environmental factors such as wind and rain, resulting in measurement failure. Summary of the Invention

[0004] One or more embodiments of the present application aim to solve, to a certain extent, the problem of how to ensure accurate and effective measurement of the installation deviation of components in a photovoltaic system through a simple measuring device.

[0005] One or more embodiments of the present application provide a measuring device, including a base, an upper cover, and a photosensitive member. The base is used to connect to a photovoltaic panel or a photovoltaic bracket. The photosensitive member is connected to the base. A scale is provided at the circumferential position of the base where the photosensitive member is located. The upper cover is detachably connected and covers the base. A light-transmitting hole is opened at one end face of the upper cover opposite to the photosensitive member.

[0006] Optionally, the base is provided with a boss, and the boss is provided with a groove. The upper cover covers the groove, and the photosensitive member is connected to the groove. The scale is provided on the surface of the boss where the notch of the groove is located.

[0007] Optionally, the upper cover is a cylindrical structure adapted to the boss. The boss is provided with an external thread, and the inner circumferential wall of the upper cover is provided with an internal thread. The upper cover is threadedly connected to the boss.

[0008] Optionally, the base and the upper cover are respectively provided with a marking structure for identifying directions.

[0009] Optionally, a first stopper is provided at one end of the upper cover away from the light-transmitting hole, and a second stopper is provided on the base. When the first stopper and the second stopper are in mutual abutment, the marking structures on the upper cover and the base are in corresponding positions.

[0010] Optionally, the height of the second stopper is greater than or equal to the pitch of the upper cover and less than or equal to the product of half the number of threads of the upper cover and the pitch.

[0011] Optionally, the measuring device further includes a first magnetic member magnetically connected to the base, the photosensitive member is a circular photosensitive paper, and a plurality of the first magnetic members are arranged along the circumferential edge of the photosensitive member.

[0012] Optionally, the measuring device further includes a second magnetic member, the second magnetic member is connected to the end face of the base on the side opposite to the photosensitive member, and the second magnetic member is used for magnetic connection with the photovoltaic panel or the photovoltaic support.

[0013] Optionally, the measuring device further includes a light-shielding structure, the light-shielding structure is connected to the upper cover and is used for shielding the light-transmitting hole.

[0014] Compared with the prior art, a measuring device provided by the present application has, but is not limited to, the following technical effects:

[0015] The measuring device provided by this application is applied in a photovoltaic system and can be used to measure, for example, the perpendicularity between a photovoltaic panel and the incident light ray, and can also be used to measure the deviation angle between a photovoltaic support and the north-south direction. By setting a base, the base can be connected to the photovoltaic panel or the photovoltaic support. And by installing a photosensitive component on the base, and the upper cover is detachably connected to the base. When the upper cover is connected to the base, the photosensitive component can be covered, effectively preventing the influence of environmental factors such as wind and rain on the photosensitive change of the photosensitive component, ensuring the measurement accuracy. And after the upper cover and the base are disassembled, it is convenient to view or take out the photosensitive component. At the same time, by opening a light-transmitting hole at one end of the upper cover opposite to the photosensitive component, that is, when in use, after the upper cover and the base are connected, light can pass through the light-transmitting hole and irradiate on the photosensitive component, and a photosensitive change such as an imprint is formed on the photosensitive component. Then, the position of the photosensitive change on the photosensitive component can be compared with the position of the orthographic projection of the light-transmitting hole on the photosensitive component. If they coincide, the photovoltaic panel is perpendicular to the light ray at this time, or the photovoltaic support is in the due south and due north directions; if the above two positions do not coincide, for example, when this device is installed on a photovoltaic panel, the deviation angle between the photovoltaic panel and the incident light ray can be obtained by calculating the trigonometric function with the distance between the above two positions and the distance between the light-transmitting hole and its orthographic projection. If this device is installed on a photovoltaic support, by setting scales at the circumferential position of the photosensitive component on the base, the angle between the two extension lines can be obtained by connecting the position of the orthographic projection of the light-transmitting hole and the center of the photosensitive component and extending it to the scale, and by connecting the position of the photosensitive change such as the above imprint and the center of the photosensitive component and extending it to the scale. The included angle between the two extension lines is the deviation angle of the photovoltaic support relative to the north-south direction, and the deviation angle value can be read through the scale. Then, the photovoltaic system can be adjusted in time according to the above deviation angle. Through the above structural settings, the measuring device has a simple structure and is easy to assemble, and can accurately and effectively measure the installation deviation angle of components such as photovoltaic panels or photovoltaic supports 01 in the photovoltaic system through a relatively simple structure, saving costs.

[0016] In addition, one or more embodiments of this application provide a photovoltaic system, including the measuring device described above.

[0017] The photovoltaic system described in this application has the same advantages as the inclined beam device relative to the prior art, which will not be elaborated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of this application, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings described below only relate to some embodiments of this application and do not limit this application.

[0019] Figure 1 It is a schematic structural diagram of the measuring device according to the embodiment of this application;

[0020] Figure 2 Schematic diagram of the principle for the measuring device in the embodiment of the present application to measure the perpendicularity deviation of the photovoltaic panel Figure 1 ;

[0021] Figure 3 Schematic structural diagram of the measuring device in the embodiment of the present application installed on the photovoltaic support;

[0022] Figure 4 Schematic diagram of the principle for the measuring device in the embodiment of the present application to measure the north-south deviation of the photovoltaic support Figure 2 ;

[0023] Figure 5 Schematic structural diagram of the base in the embodiment of the present application;

[0024] Figure 6 Schematic structural diagram of another perspective of the measuring device in the embodiment of the present application.

[0025] Explanation of reference numerals:

[0026] 10 - Base, 11 - Boss, 12 - Groove, 13 - Second stop block, 14 - Connecting hole, 20 - Upper cover, 21 - Light-transmitting hole, 22 - First stop block, 30 - Photosensitive element, 40 - Second magnetic attraction member, 50 - Cover plate, 01 - Photovoltaic support, A - Sun, B - Actual incident light, C - Theoretical perpendicular incident light, L1 - First distance, L2 - Second distance, X - Photosensitive change position. Detailed implementation manners

[0027] To make the objectives, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings showing multiple embodiments according to the present application. It should be understood that the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments recorded in the present application without creative efforts shall fall within the scope of protection of the present application.

[0028] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by those skilled in the technical field to which this application belongs; the terms used in the description of this application in the specification are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including", "comprising", "having", "possessing", "containing", "including" and the like in the description and claims of this application and the above description of the drawings are open-ended terms. Therefore, a method or device "including", "comprising", "having" one or more steps or elements has one or more steps or elements, but is not limited to only having these one or more elements. The terms "first", "second", etc. in the description and claims of this application or the above drawings are used to distinguish different objects and are not used to describe a specific order or primary-secondary relationship. In addition, the terms "first", "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first", "second" may explicitly or implicitly include one or more of such features. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0029] In the description of this application, it should be understood that the orientation or positional relationship indicated by the terms "center", "transverse", "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing this 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 thus cannot be understood as a limitation to this application.

[0030] In the description of this application, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "connected", "attached" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be directly connected, or indirectly connected through an intermediate medium, and may be the communication inside two elements. 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.

[0031] Referring to "embodiments" in this application means that specific features, structures or characteristics described in connection with the embodiments may be included in at least one embodiment of this application. The appearance of this phrase in various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described in this application can be combined with other embodiments.

[0032] As described above, it should be emphasized that when the term "comprising / including" is used in this specification, it is used to clearly indicate the presence of the described features, integers, steps or components, but does not exclude the presence or addition of one or more other features, integers, steps, parts or groups of features, integers, steps, parts. As used in this application, the singular forms "a", "an" and "the" also include the plural forms unless the context clearly indicates otherwise.

[0033] The term "a" or "an" in this specification may mean one, but may also be consistent with the meaning of "at least one" or "one or more". The term "about" generally means plus or minus 10% of the recited value, or more specifically plus or minus 5%. The term "or" used in the claims means "and / or" unless clearly indicated otherwise to refer only to alternative options.

[0034] The term "and / or" in this application is merely a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this application generally indicates that the objects before and after are in an "or" relationship.

[0035] One or more embodiments of this application provide a measuring device. Figure 1 This is an embodiment of the measuring device provided for this application.

[0036] As Figure 1 shown, the measuring device includes a base 10, an upper cover 20 and a photosensitive member 30. The base 10 is used to connect to a photovoltaic panel or a photovoltaic support 01. A scale is provided at the circumferential position of the base 10 where the photosensitive member 30 is located. The photosensitive member 30 is connected to the base 10. The upper cover 20 is detachably connected and covers the base 10. A light-transmitting hole 21 is formed in one end face of the upper cover 20 opposite to the photosensitive member 30.

[0037] In some embodiments, as Figure 2As shown, when it is necessary to measure the perpendicularity deviation of the photovoltaic panel by means of this measuring device. Of course, it should be noted here that the perpendicularity of the photovoltaic panel refers to whether the photovoltaic panel is perpendicular to the incident light. When the light is perpendicular to the photovoltaic panel, the working efficiency is the highest. For the deviation angle of the photovoltaic panel from the theoretical perpendicular incident light C caused by installation, service time, adjustment, etc., it can be measured by this measuring device. The base 10 can be installed on the photovoltaic panel, and the measurement can be carried out, for example, at noon, that is, at the moment of the strongest light. At the same time, a light-transmitting hole 21 can be opened on the upper cover 20. Preferably, the light-transmitting hole 21 is opened at the center of the end face of the upper cover 20 away from the base 10, that is, the end face opposite to the photosensitive member 30. For example, if this end face of the upper cover 20 is circular, the light-transmitting hole 21 is opened at the center of the circle. The photosensitive member 30 can be, for example, photosensitive discoloring paper, ultraviolet test card or photosensitive discoloring board, etc., which is not specifically limited here as long as it can produce changes such as marks after being irradiated by light. In an ideal state, that is, when the photovoltaic panel is perpendicular to the actual incident light B emitted by the sun A, the light passes through the light-transmitting hole 21 and then irradiates on the photosensitive member 30 at the orthographic projection of the light-transmitting hole 21, that is, the mark is located at the orthographic projection of the light-transmitting hole 21 on the photosensitive member 30. For example, if the photosensitive member 30 is circular and matches the shape of the end face of the upper cover 20 where the light-transmitting hole 21 is opened, the position of the photosensitive change (mark position) generated on the photosensitive member 30 should be at its center of the circle. In actual situations, due to installation, service time, adjustment, etc., there may be deviations, and the photovoltaic panel may not be perpendicular to the actual incident light B emitted by the sun A. At this time, the deviation angle formed by the actual incident light B and the theoretical perpendicular incident light C can be known through the position of the photosensitive change (mark position) formed by the actual incident light B passing through the light-transmitting hole 21 and irradiating on the photosensitive member 30. For example, by measuring the distance between the position of the mark and the orthographic projection position of the light-transmitting hole 21 on the photosensitive member 30, that is, the first distance L1 shown in Figure 2 and the distance between the light-transmitting hole 21 and its orthographic projection, such as the second distance L2 shown in Figure 2 . After measuring the first distance L1 and the second distance L2 and according to trigonometric functions, the included angle formed by the actual incident light B and the theoretical perpendicular incident light C can be obtained, that is, the deviation angle of the perpendicularity of the photovoltaic panel. After knowing this angle, the photovoltaic panel can be appropriately adjusted according to this angle to make the photovoltaic panel perpendicular to the incident light, thereby improving its power generation efficiency.

[0038] In some embodiments, such as Figure 3 and Figure 4As shown, the photovoltaic support 01, such as a tracking support, if its installation angle is due south and due north, the photovoltaic panels on it can receive the strongest light intensity, thus achieving the highest power generation efficiency. Whether it is installed due south and due north can be measured by this measuring device. Generally, by installing this measuring device, that is, the base 10, on the top surface of the photovoltaic support 01, that is, the sunny side, and the center line of this measuring device can be installed to coincide with or be parallel to the center line of the photovoltaic support 01, which is more convenient for judging and measuring whether the photovoltaic support 01 deviates from the due south and due north direction and the deviation angle. The center line of the photovoltaic support 01 is the center line that coincides with the north-south direction in the ideal state. The center line of this measuring device can be the center lines corresponding to the base 10, the upper cover 20, and the photosensitive member 30. Preferably, the upper cover 20 is provided with a light-transmitting hole 21 on the center line. During measurement, a photosensitive change position X can be formed on the photosensitive member 30, such as Figure 4 the photosensitive change position X shown in. At this time, by connecting and extending the center line of the photosensitive change position X and the center of the photosensitive member 30, and corresponding to a scale line, the included angle between the center line corresponding to the center line of the photosensitive member 30 and the center line of the photovoltaic support 01 is the deviation angle of the photovoltaic support 01 relative to due south and due north. It should be noted here that when the light-transmitting hole 21 is opened on the center line of the upper cover 20, the orthographic projection of the light-sensitive hole 21 is also on the center line of the photosensitive member 30, that is, the center line corresponding to the north-south direction. If the light-transmitting hole 21 is opened at other positions on the upper cover 20, then the orthographic projection of the light-sensitive hole 21 on the photosensitive member 30 needs to be connected and extended with the center of the photosensitive member 30 as the standard line for comparing the variation angle, and then the orientation of the photovoltaic support 01 is adjusted according to the deviation angle to maximize the operating efficiency of the photovoltaic system. In addition, the shape of the light-transmitting hole 21 can be a small-diameter round hole, as long as it can transmit light, and preferably, its size should be designed to be small to prevent the entry of dust, wind, rain, etc. as much as possible.

[0039] In at least one embodiment, the measuring device is applied to a photovoltaic system and can be used, for example, to measure the perpendicularity between a photovoltaic panel and the incident light ray, and to measure the deviation angle between the photovoltaic support 01 and the north-south direction. By providing a base 10, the base 10 can be connected to the photovoltaic panel or the photovoltaic support 01. And by installing a photosensitive element 30 on the base 10 and detachably connecting the upper cover 20 to the base 10, when the upper cover 20 is connected to the base 10, the photosensitive element 30 can be covered, effectively preventing environmental factors such as wind and rain from affecting the photosensitivity change of the photosensitive element 30, ensuring the measurement accuracy. And after detaching the upper cover 20 from the base 10, it is convenient to view or take out the photosensitive element 30. At the same time, by opening a light-transmitting hole 21 at one end of the upper cover 20 opposite to the photosensitive element 30, that is, when in use, after the upper cover 20 is connected to the base 10, light can pass through the light-transmitting hole 21 and irradiate on the photosensitive element 30, and a photosensitivity change such as an imprint is formed on the photosensitive element 30. Then, the position of the photosensitivity change on the photosensitive element 30 can be compared with the orthographic projection position of the light-transmitting hole 21 on the photosensitive element 30. If they coincide, the photovoltaic panel is perpendicular to the light at this time, or the photovoltaic support 01 is in the due south and due north directions; if the above two positions do not coincide, for example, when this device is installed on a photovoltaic panel, the deviation angle between the photovoltaic panel and the incident light can be obtained by calculating the trigonometric function with the connection distance between the above two positions and the distance between the light-transmitting hole 21 and its orthographic projection. If this device is installed on the photovoltaic support 01, by providing scales at the circumferential position of the photosensitive element 30 on the base 10, the deviation angle of the photovoltaic support 01 relative to the north-south direction can be obtained by connecting the center of the orthographic projection position of the light-transmitting hole 21 and the center of the photosensitive element 30 and extending it to the scale, and connecting the center of the above photosensitivity change position such as an imprint and the center of the photosensitive element 30 and extending it to the scale. The included angle between the above two extension lines is the deviation angle of the photovoltaic support 01 relative to the north-south direction, and the deviation angle value can be read through the scale. Then, the photovoltaic system can be adjusted in time according to the above deviation angle. Through the above structural arrangement, the structure of this measuring device is simple and easy to assemble, and the installation deviation angle of, for example, a photovoltaic panel or a photovoltaic support 01 in a photovoltaic system can be accurately and effectively measured through a relatively simple structure, saving costs.

[0040] Optionally, as Figure 4 and Figure 5 shown, the base 10 is provided with a boss 11, the boss 11 is provided with a groove 12, the upper cover 20 covers the groove 12, the photosensitive element 30 is connected in the groove 12, and the scale is provided on the surface of the boss 11 where the notch of the groove 12 is located.

[0041] In some embodiments, the boss 11 is a cylindrical boss 11, and the groove 12 is a circular groove 12, which is more convenient for connection and for setting the circumferential scale. The photosensitive member 30 has a structure adapted to the bottom of the circular groove 12, such as a circular piece of paper or a plate-like structure, which is convenient for positioning and installation. At the same time, the scale may include, for example, the 0° to 360° long and short scale lines evenly divided on a dial or a protractor, which is more convenient for quickly measuring the deviation angle.

[0042] In at least one embodiment, by providing a boss 11 on the base 10 and opening a groove 12 on the boss 11, it is convenient to connect and fix the photosensitive member 30 in the groove 12, which is convenient for the limited installation of the photosensitive member 30. At the same time, it is convenient to form a relatively sealed structure for the photosensitive member 30 after connecting the upper cover 20 and the base 10, preventing it from being affected by external adverse factors, further improving the measurement accuracy. At the same time, by setting the scale on the surface where the notch of the groove 12 on the boss 11 is located, it is convenient to quickly know the installation deviation angle of components in the photovoltaic system, such as a photovoltaic bracket, which is more convenient for use.

[0043] Optionally, as Figure 1 and Figure 5 shown, the upper cover 20 is a cylindrical structure adapted to the boss 11. The boss 11 is provided with an external thread, and the circumferential inner wall of the upper cover 20 is provided with an internal thread. The upper cover 20 is threadedly connected to the boss 11.

[0044] In some embodiments, the upper cover 20 is a cylindrical structure adapted to the cylindrical boss 11, and the light-transmitting hole 21 is opened at the bottom of the cylindrical structure. And the bottom of the cylinder is arranged parallel to the paper-like or plate-like photosensitive member 30, which is more convenient for installation and accurate measurement.

[0045] In at least one embodiment, by setting the upper cover 20 as a cylindrical structure adapted to the boss 12, and by opening an external thread on the boss 11 and an internal thread on the circumferential inner wall of the upper cover 20, the upper cover 20 can be threadedly connected to the boss 11, which is convenient for quick assembly and disassembly and more convenient for use.

[0046] Optionally, as Figure 1 、 Figure 4 and Figure 5 shown, the base 10 and the upper cover 20 are respectively provided with a marking structure for identifying directions.

[0047] In some embodiments, the base 10 is provided with scale lines as a marking structure, such as four scale lines marking the directions of southeast, northwest, etc. Among them, as Figure 1 and Figure 2As shown, at the scale line indicating the south direction on the base 10, there is also an "S" marked. At the same time, an arrow structure as a marking structure is provided on the upper cover 20, and an "S" is also marked at the arrow structure. During use, the two "S" markings can be made to coincide to indicate the south direction. At the same time, after the two "S" markings coincide, they can be made to coincide with the center line of, for example, the photovoltaic support 01 to quickly measure the deviation angle of the photovoltaic support 01 relative to the true south and true north.

[0048] In at least one embodiment, by respectively providing marking structures for indicating directions on the base 10 and the upper cover 20, on the one hand, it is convenient to quickly align and install the base 10 and the upper cover 20. On the other hand, it is also convenient to quickly install the base 10 with components of the photovoltaic system, such as the photovoltaic support 01, and at the same time, it is convenient to quickly measure the deviation angle of the photovoltaic support 01 relative to the true south and true north, making it more convenient to use.

[0049] Optionally, as Figure 1 , Figure 4 and Figure 5 shown, a first stop block 22 is provided at one end of the upper cover 20 away from the light-transmitting hole 21, and a second stop block 13 is provided on the base 10. When the first stop block 22 and the second stop block 13 are in mutual contact, the marking structures on the upper cover 20 and the base 10 are in corresponding positions.

[0050] In some embodiments, the first stop block 22 is provided at a position corresponding to the marking structure indicating the south direction on the upper cover 20. At the same time, the second stop block 13 is provided at a position corresponding to the marking structure indicating the south direction on the base 10, which is more convenient for the alignment and installation of the upper cover 20 and the base 10. At the same time, a plurality of marking structures can be correspondingly provided along the circumferential direction on the upper cover 20 and the base 10, such as the corresponding marking structures indicating the four directions of east, south, west, and north, which is convenient for enhancing the marking of directions and angles, and is also more convenient for operators to read and align for installation and other operations.

[0051] In at least one embodiment, by providing a first stop block 22 at one end of the upper cover 20 away from the light-transmitting hole 21, and a second stop block 13 on the base 10, and at the same time, by correspondingly arranging the first stop block 22 and the second stop block 13 at positions corresponding to the marking structures in the same marking direction on the upper cover 20 and the base 10 respectively, when the upper cover 20 and the base 10 are threadedly connected, after the upper cover 20 is screwed in a certain number of turns with the base 10, the first stop block 22 abuts against the second stop block 13 to stop and limit the upper cover 20 so that it cannot be further screwed in. At this time, the two marking structures on the upper cover 20 and the base 10 in the same marking direction just coincide, which is more convenient for their quick alignment and installation, and the operation is more convenient.

[0052] Optionally, as Figure 1 , Figure 4 andFigure 5 As shown, the height of the second stopper 13 is greater than or equal to the pitch of the upper cover 20 and less than or equal to the product of half the number of threads of the upper cover 20 and the pitch.

[0053] In some embodiments, the heights of the first stopper 22 and the second stopper 13 should not be too high. At the same time, the overlapping value after the first stopper 22 and the second stopper 13 are in contact should not be too small. At this time, a corresponding relationship needs to be designed with the pitch of the threads on the upper cover 20 and the boss 11. That is to say, it should be ensured that the threaded connection between the upper cover 20 and the base 10 is stable enough before stopping and limiting, and at the same time, there should be a certain stability when stopping and limiting, so that the structure is more stable and reliable.

[0054] In at least one embodiment, by setting the height of the second stopper 13 to be greater than or equal to the pitch of the upper cover 20, which is also the pitch of the threads of the boss 11, when the second stopper 13 and the first stopper 22 are in contact and limited, there is at least a certain overlapping value of the contact to achieve stable limiting. At the same time, by setting the height of the second stopper 13 to be less than or equal to the product of half the number of threads of the upper cover 20 and the pitch, that is, to prevent the second stopper 13 from being too high and affecting the stability of the threaded connection between the upper cover 20 and the boss 11. That is to say, at least half of the total number of thread turns between the upper cover 20 and the boss 11 should form a threaded connection, ensuring the structural stability of the threaded connection.

[0055] Optionally, as Figure 4 shown, the measuring device further includes a first magnetic attraction member magnetically connected to the base 10. The photosensitive member 30 is a circular photosensitive paper, and a plurality of the first magnetic attraction members are arranged along the circular edge of the photosensitive member 30.

[0056] In some embodiments, the photosensitive member 30 is a circular photosensitive paper adapted to the size of the bottom of the circular groove 12, which is more convenient for precise installation. And in order to prevent the photosensitive paper from having wrinkles, curling, etc. that affect the measurement accuracy, a circular light-transmitting glass with a suitable shape can also be provided and pressed on the photosensitive paper, and then magnetically connected to the base 10 through the first magnetic attraction member, making the structure more stable and further improving the measurement accuracy.

[0057] In at least one embodiment, by providing a plurality of first magnetic members, such as magnets, and setting the photosensitive member 30 as a circular photosensitive paper, on the one hand, the circular photosensitive paper is more convenient to be installed on the bottom of the circular groove 12, and has a lower cost and is convenient for repeated use. On the other hand, by arranging the plurality of first magnetic members along the circumferential edge of the photosensitive member 30, preferably, the plurality of first magnetic members are arranged at equal intervals, which is convenient to fix the photosensitive member 30, that is, by pressing the plurality of first magnetic members on the circumferential edge of the photosensitive member 30, and at the same time having a magnetic connection with the base 10, the photosensitive member 30 can be clamped between the first magnetic members and the base 10, that is, between the bottom of the groove 12, so as to press and fix the photosensitive member 30. At the same time, when disassembling and replacing, only by releasing the magnetic connection between the first magnetic member and the base 10, the photosensitive member 30 can be released, which is convenient to disassemble and take out the photosensitive member 30 and convenient to use.

[0058] Optionally, as Figure 6 shown, the measuring device further includes a second magnetic member 40, and the second magnetic member 40 is connected to the end face of the base 10 opposite to the photosensitive member 30, and the second magnetic member 40 is used for magnetic connection with the photovoltaic panel or the photovoltaic support.

[0059] In some embodiments, the measuring device further includes a cover plate 50. An installation groove is formed on the end face of the base 10 opposite to the photosensitive member 30, and the second magnetic member 40 is connected in the installation groove. The cover plate 50 covers the installation groove. By providing the installation groove, it is convenient to quickly and stably limit and install the second magnetic member, such as a magnet. At the same time, by providing the cover plate 50 to cover the installation groove, the second magnetic member can be further limited in the installation groove, and the structure is more stable and reliable.

[0060] In at least one embodiment, by connecting a second magnetic member 40, such as a magnet, to the end face of the base 10 opposite to the photosensitive member 30, it is convenient to magnetically connect the base 10 to the photovoltaic panel or the photovoltaic support 01. Of course, it should be understood that the photovoltaic panel and the photovoltaic support 01 generally have a metal material and can be magnetically connected to the second magnetic member 40 such as a magnet, which further facilitates the overall installation, and the installation and disassembly are more convenient and fast, and the use is more convenient.

[0061] Optionally, as Figure 1 and Figures 4 to 6 shown, the base 10 is provided with a connection hole 14, and the connection hole 14 is used for connecting with the photovoltaic panel or the photovoltaic support 01.

[0062] In some embodiments, a plurality of connection holes 14 are evenly spaced along the edge of the base 10, as Figure 1 and Figures 4 to 6As shown, four connecting holes 14 are respectively arranged at the four corners of the base 10, and the connection is more stable and reliable.

[0063] In at least one embodiment, by providing the connecting holes 14 on the base 10, when the photovoltaic panel or the photovoltaic support 01 is made of a non-metallic material, that is, when magnetic attraction connection is not possible, the base 01 can be installed on the photovoltaic panel or the photovoltaic support 01 by, for example, bolts cooperating with the connecting holes 14, making the overall structure more stable and reliable and facilitating connection and fixation.

[0064] Optionally, as Figure 1 shown, the measuring device further includes a light-shielding structure, which is connected to the upper cover 20 and is used to block the light-transmitting hole 21.

[0065] In some embodiments, the light-shielding structure can be an opaque film. When the device is not in use, the film can be pasted on the upper cover 20 and cover the light-transmitting hole 21. When it is necessary to use, the film can be torn off. Additionally, the light-shielding structure can also be a plate structure rotatably connected or snap-fitted on the upper cover 20. When the device is not in use, the plate structure can be covered on the upper cover 20 and cover the light-transmitting hole 21. When it is necessary to use, the light-transmitting hole 21 can be exposed by rotating the plate structure or opening the plate structure to perform light-transmitting measurement, which is convenient to use and facilitates the effective measurement of the device. Exemplarily, the plate structure is a cover plate and is hinged to the upper cover 20 through a pin shaft. When the device is not in use, the cover plate is closely attached to the upper end surface of the upper cover 20. When measurement is required, the cover plate rotates relative to the upper cover 20 through the pin shaft, that is, opens to expose the light-transmitting hole 21, which is convenient for operation and use.

[0066] In at least one embodiment, by providing the light-shielding structure on the upper cover 20, when the device is not in use, the light-transmitting hole 21 can be blocked by the light-shielding structure to prevent light from passing through the light-transmitting hole 21 and irradiating on the photosensitive member 30, forming an ineffective photosensitive change, wasting the photosensitive member 30 and causing interference during measurement. When it is necessary to use, the light-shielding structure can be removed or opened, that is, the light-transmitting hole 21 is not blocked, to achieve normal measurement, which is convenient for the effective measurement of the device.

[0067] In addition, one or more embodiments of the present application provide a photovoltaic system including the measuring device as described above.

[0068] In some embodiments, the photovoltaic system further includes a photovoltaic panel and a photovoltaic support 01.

[0069] In at least one embodiment, the advantages of the photovoltaic system and the measuring device of the present application relative to the prior art are the same, and assembling the measuring device into the corresponding photovoltaic system should be understood as a common technical means for those of ordinary skill in the art, and will not be elaborated herein.

[0070] The basic principles, main features and advantages of the present application have been described above. Those skilled in the art should understand that the present application is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present application. Without departing from the spirit and scope of the present application, various changes and improvements will occur to the present application, and these changes and improvements all fall within the scope of the present application claimed. The scope of protection required by the present application is defined by the appended claims and their equivalents.

Claims

1. A measuring device, characterized in that: It includes a base, an upper cover and a photosensitive member, the base is used to connect to a photovoltaic panel or a photovoltaic bracket, the photosensitive member is connected to the base, a scale is provided on the base at the circumferential position of the photosensitive member, the upper cover is detachably connected and covers the base, and a light-transmitting hole is provided on the end face of the upper cover opposite to the photosensitive member.

2. The measuring device according to claim 1, characterized in that The base is provided with a boss, the boss is provided with a groove, the upper cover is arranged in the groove, the photosensitive member is connected in the groove, and the scale is arranged on the surface of the boss where the notch of the groove is located.

3. The measuring device according to claim 2, characterized in that The upper cover is a cylindrical structure matched with the boss, the boss is provided with an external thread, the circumferential inner wall of the upper cover is provided with an internal thread, and the upper cover is threadedly connected with the boss.

4. The measuring device according to claim 3, characterized in that The base and the upper cover are respectively provided with marking structures for marking directions.

5. The measuring device according to claim 4, characterized in that A first stopper is disposed at one end of the upper cover away from the light-transmitting hole, and a second stopper is disposed on the base. When the first stopper and the second stopper abut against each other, the identification structures on the upper cover and the base are located in corresponding positions.

6. The measuring device according to claim 5, characterized in that The height of the second stopper is greater than or equal to the pitch of the upper cover, and less than or equal to the product of half the number of threads of the upper cover and the pitch.

7. The measuring device according to claim 2, characterized in that The measuring device also includes a first magnetic member magnetically connected to the base, the photosensitive member is a circular photosensitive paper, and a plurality of the first magnetic members are arranged on the circumferential edge of the photosensitive member.

8. The measuring device according to claim 1, characterized in that The measuring device also includes a second magnetic component, which is connected to an end surface of the base opposite to the photosensitive component, and is used for magnetically connecting to the photovoltaic panel or the photovoltaic bracket.

9. The measuring device according to claim 1, characterized in that The measuring device further comprises a light shielding structure, which is connected to the upper cover and is used for shielding the light-transmitting hole.

10. A photovoltaic system, characterized in that: Comprising a measuring device as claimed in any one of claims 1 to 9.

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