Sun tracking device

Abstract

The utility model relates to the technical field of solar power generation, in particular to a sun tracking device, and aims to solve the problem of how to ensure that a solar panel is perpendicular to light to the greatest extent in a low-cost manner while stray light interference is avoided. In order to achieve the purpose, according to the sun-tracking device, the light-sensitive elements in each row of one of the first matrix and the second matrix are connected in series, and the light-sensitive elements in each column of the other matrix of the first matrix and the second matrix are connected in series, so that when light rays penetrate through the light-transmitting holes and irradiate the second side, the light-sensitive elements in the first matrix and the second matrix are irradiated; according to the method, the row and the column with the minimum resistance value in the first matrix and the second matrix or the column and the row with the minimum resistance value in the first matrix and the second matrix can be obtained, the position of the light is determined through the intersection point of the rows and the columns, then the light incidence angle is determined, the angle of the solar panel is adjusted accordingly, the solar panel is perpendicular to the light, and the method is low in cost and easy to implement. The method has remarkable economic advantages.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of solar power generation, and specifically provides a sun tracking device. BACKGROUND

[0002] Solar energy as a clean, renewable energy is increasingly concerned and valued by countries around the world. The use of solar energy has been more and more widely, among which solar photovoltaic power generation is one of its important application modes, and its efficiency is affected by the incident angle of solar panels receiving sunlight. Therefore, the sun tracking device emerges as the times require, aiming to adjust the angle of the solar panel to maximize the reception of sunlight.

[0003] At present, the three commonly used sun tracking methods include astronomical algorithm tracking method, image tracking method and photosensitive resistance tracking method. Among them, the astronomical algorithm is greatly affected by the terrain undulation and installation error; the hardware cost and maintenance cost of the image tracking method are relatively high; although the photosensitive tracking element can set photosensitive resistors on the front and back of the solar panel respectively, and detect the deflection of the sun direction by the deviation signal generated by the different light conditions received by the resistors, but this method is easily disturbed by ambient stray light.

[0004] Therefore, there is a need in the art for a new technical solution to solve the above problems. CONTENT OF THE UTILITY MODEL

[0005] The utility model aims at solving the above technical problems, that is, solving the problem of how to avoid stray light interference while adopting a low-cost method to ensure that the solar panel is perpendicular to the light as much as possible. To this end, the present application provides a sun tracking device, which comprises:

[0006] A housing, the housing comprises a first side and a second side opposite to each other, the first side is provided with a light transmission hole, and the light can irradiate on the second side through the light transmission hole;

[0007] A plurality of first photosensitive elements, a plurality of first photosensitive elements are arranged at intervals in the second side of the housing, and the distribution of a plurality of first photosensitive elements constitutes a first matrix;

[0008] A plurality of second photosensitive elements are arranged at intervals on the second side and correspond one by one to the first photosensitive elements, and the distribution of a plurality of second photosensitive elements constitutes a second matrix; the second photosensitive element and the corresponding first photosensitive element are arranged to be able to receive light through the light transmission hole at the same time;

[0009] The first photosensitive elements in each row of the first matrix are connected in series, and the second photosensitive elements in each column of the second matrix are connected in series; or the first photosensitive elements in each column of the first matrix are connected in series, and the second photosensitive elements in each row of the second matrix are connected in series.

[0010] In the preferred technical solutions of the above sun-tracking device, the first photosensitive element and the second photosensitive element corresponding thereto form a photosensitive assembly, the photosensitive assembly comprises a first photosensitive assembly and a plurality of second photosensitive assemblies, and the first photosensitive assembly is covered by the orthographic projection of the light-transmitting hole on the second side.

[0011] In the preferred technical solutions of the above sun-tracking device, the orthographic projection of the light-transmitting hole on the second side does not cover any of the second photosensitive assemblies.

[0012] In the preferred technical solutions of the above sun-tracking device, the sun-tracking device further comprises:

[0013] a first baffle, which is arranged on the second side and surrounds the first photosensitive assembly.

[0014] In the preferred technical solutions of the above sun-tracking device, the orthographic projection of the light-transmitting hole on the second side covers the area surrounded by the first baffle.

[0015] In the preferred technical solutions of the above sun-tracking device, the sun-tracking device further comprises:

[0016] a plurality of second baffles corresponding to the second photosensitive assemblies one by one, which are arranged on the second side and surround the second photosensitive assemblies corresponding thereto.

[0017] In the preferred technical solutions of the above sun-tracking device, the plurality of photosensitive assemblies are distributed in a third matrix, the number of columns and the number of rows in the third matrix are both odd numbers, and the first photosensitive assembly is located at the center of the third matrix.

[0018] In the preferred technical solutions of the above sun-tracking device, the minimum distance between the first photosensitive element and the second photosensitive element corresponding thereto is greater than or equal to 0 and less than or equal to the size of the light-transmitting hole in the direction of the line where the minimum distance is located.

[0019] In the preferred technical solutions of the above sun-tracking device, the first side and the second side are parallel to each other.

[0020] In the preferred technical solutions of the above sun-tracking device, the first photosensitive element is a first photosensitive resistor, a first photosensitive diode, or a first photosensitive triode; and / or

[0021] the second photosensitive element is a second photosensitive resistor, a second photosensitive diode, or a second photosensitive triode.

[0022] The skilled in the art can understand that the sun tracking device of the utility model can avoid the influence of stray light by setting the light transmission hole on the first side of the shell and setting the plurality of first photosensitive elements and the plurality of second photosensitive elements on the second side in the shell, so that the sunlight can be transmitted through the light transmission hole and irradiate on the photosensitive elements in the shell. In addition, the application can also connect the photosensitive elements of each row in the first matrix and the photosensitive elements of each column in the second matrix in series respectively, or connect the photosensitive elements of each column in the first matrix and the photosensitive elements of each row in the second matrix in series respectively, so that when the light is transmitted through the light transmission hole and irradiates on the first photosensitive element and the corresponding second photosensitive element, the row with the minimum resistance in the first matrix and the column with the minimum resistance in the second matrix or the column with the minimum resistance in the first matrix and the row with the minimum resistance in the second matrix can be obtained, and the position of the light can be determined through the intersection of the row and the column, so as to determine the angle of the light incidence, and the angle of the solar panel is adjusted accordingly, so that the solar panel is kept perpendicular to the light, thereby improving the power generation efficiency of the solar panel, and the cost is low, which has significant economic advantages.

[0023] Further, the orthographic projection formed on the second side through the light transmission hole covers the first photosensitive element and the second photosensitive element of the first photosensitive assembly, so that the angle of the solar panel can be adjusted according to the principle that the resistance of the two photosensitive elements in the first photosensitive assembly is the smallest, so that the light is perpendicular to the solar panel.

[0024] Further, the orthographic projection on the second side through the light transmission hole does not cover any second photosensitive assembly at all, so that the interference of the second photosensitive assembly can be avoided, and the sun tracking device can adjust the angle of the solar panel based on the first photosensitive assembly to ensure that the light is perpendicular to the solar panel.

[0025] Further, by setting the first baffle, the light originally irradiating on the second photosensitive assembly can be prevented from irradiating on the first photosensitive assembly, and the light originally irradiating on the first photosensitive assembly can be prevented from irradiating on the second photosensitive assembly, so that the sun tracking device can more stably and accurately track the position of the sun, and the power generation efficiency of the solar panel is improved.

[0026] Further, by setting the second baffle, when the light is transmitted through the light transmission hole and irradiates on the first photosensitive assembly, the interference on the adjustment of the solar panel caused by the partial light irradiating on the second photosensitive assembly can be prevented, so that the operation stability of the sun tracking device is improved. In addition, the setting of the second baffle can also prevent the light originally irradiating on a certain second photosensitive assembly from partially irradiating on the first photosensitive assembly or other second photosensitive assemblies, thereby adversely affecting the adjustment of the solar panel.

[0027] Further, by setting the minimum distance between the first light-sensitive element and the second light-sensitive element corresponding thereto to be greater than or equal to 0 and less than or equal to the size of the light-transmitting hole in the direction of the line where the minimum distance is located, the light can be ensured to transmit through the light-transmitting hole and simultaneously irradiate on the first light-sensitive element and the second light-sensitive element corresponding thereto, thereby facilitating the determination of the position of the light, and further determining the angle of incidence of the light, and adjusting the angle of the solar panel according to the same, so that the solar panel is kept perpendicular to the light. BRIEF DESCRIPTION OF DRAWINGS

[0028] The preferred embodiments of the present application will be described below with reference to the accompanying drawings, in which:

[0029] Figure 1 is a structural diagram of the sun tracking device of the present application;

[0030] Figure 2 is a sectional view of the sun tracking device of the present application;

[0031] Figure 3 is an arrangement schematic diagram of the light-sensitive resistor in the present application;

[0032] Figure 4 is Figure 3 is an enlarged view of A in the present application;

[0033] Figure 5 is a connection schematic diagram of the light-sensitive resistor in the present application.

[0034] LIST OF REFERENCE NUMERALS

[0035] 1, housing; 11, first side; 12, second side; 13, light-transmitting hole; 2, first light-sensitive resistor; 3, second light-sensitive resistor; 4, first light-sensitive assembly; 5, second light-sensitive assembly; 6, first baffle; 7, second baffle. DETAILED DESCRIPTION

[0036] The preferred embodiments of the present application will be described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present application, and are not intended to limit the protection scope of the present application.

[0037] It should be noted that in the description of the present application, the terms "upper", "lower", "inner", "bottom" and the like indicate the direction or positional relationship of the terms based on the direction or positional relationship shown in the drawings, which is only for the convenience of description, and does not indicate or imply that the device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0038] In addition, it needs to be explained that in the description of the present application, unless otherwise explicitly specified and limited, the terms "arrangement", "connection" should be understood broadly, for example, it can be fixedly connected, or detachably connected, or integrally connected; it can be mechanically connected, it can be directly connected, or indirectly connected through an intermediate medium, it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0039] Referring to Figures 1-5 The sun tracking device of the present application is described.

[0040] As Figures 1-5 shown, in order to solve the problem of how to ensure that the solar panel is perpendicular to the light at the maximum extent while avoiding the interference of stray light, the sun tracking device of the present application includes a housing 1, a plurality of first photosensitive elements and a plurality of second photosensitive elements. The housing 1 includes a first side 11 and a second side 12 opposite to each other, the first side 11 is provided with a light-transmitting hole 13, and the light can irradiate on the second side 12 through the light-transmitting hole 13. The plurality of first photosensitive elements and the plurality of second photosensitive elements are both arranged at the second side 12 in the housing 1, and the distribution of the plurality of first photosensitive elements constitutes a first matrix. The plurality of second photosensitive elements correspond to the plurality of first photosensitive elements one by one, and the distribution of the plurality of second photosensitive elements constitutes a second matrix. The second photosensitive element and the corresponding first photosensitive element are arranged to be able to simultaneously receive the light transmitted through the light-transmitting hole 13; the first matrix is connected in series, and each column of second photosensitive elements in the second matrix is connected in series; or each column of first photosensitive elements in the first matrix is connected in series, and each row of second photosensitive elements in the second matrix is connected in series.

[0041] The present application is arranged by providing the light-transmitting hole 13 on the first side 11 of the housing 1, and arranging the plurality of first photosensitive elements and the plurality of second photosensitive elements on the second side 12 in the housing 1, so that the sunlight can irradiate on the photosensitive elements in the housing 1 through the light-transmitting hole 13, thereby avoiding the influence of stray light. In addition, the present application also connects the photosensitive elements in each row of the first matrix and the photosensitive elements in each column of the second matrix in series respectively, or connects the photosensitive elements in each column of the first matrix and the photosensitive elements in each row of the second matrix in series, so that when the light irradiates on the first photosensitive element and the corresponding second photosensitive element through the light-transmitting hole 13, the row with the smallest resistance in the first matrix and the column with the smallest resistance in the second matrix or the column with the smallest resistance in the first matrix and the row with the smallest resistance in the second matrix can be obtained, and the position of the light can be determined through the intersection of the row and the column, so as to determine the angle of incidence of the light, and adjust the angle of the solar panel accordingly, so that the solar panel is perpendicular to the light, thereby improving the power generation efficiency of the solar panel, and the cost is low, which has significant economic advantages.

[0042] Further reference will be made belowFigures 1-5 A preferred embodiment of the sun tracking device of the present application is introduced. It is understood by those skilled in the art that the following embodiment is only used to illustrate the principle of the present application, and is not intended to limit the scope of protection of the present application. Those skilled in the art can adjust the following arrangement under the premise that the sun tracking device at least includes the housing 1, the plurality of first light sensitive elements and the plurality of second light sensitive elements, so that the present application can be applied to more specific application scenarios.

[0043] Referring to Figures 1-5 , the sun tracking device includes the housing 1, 49 first light sensitive elements and 49 second light sensitive elements. The housing 1 has a receiving cavity, which includes a first side 11 and a second side 12, the first side 11 is provided with a light transmission hole 13 at the center position, and the second side 12 of the housing 1 is provided with 49 first light sensitive elements and 49 second light sensitive elements. The first light sensitive element is a first light sensitive resistor 2, and the second light sensitive element is a second light sensitive resistor 3, both of which are arranged in the receiving cavity. The first side 11 and the second side 12 are opposite sides of each other and are parallel to each other, which is beneficial for the light to pass through the light transmission hole 13 and irradiate on the first light sensitive resistor 2 and the second light sensitive resistor 3 arranged on the second side 12.

[0044] Of course, the present application is not fixed to the arrangement position of the light transmission hole 13, and those skilled in the art can adjust it according to the specific situation. For example, the light transmission hole 13 can also be arranged at any position of the first side 11, as long as the light can pass through the light transmission hole 13 and irradiate on the first light sensitive resistor 2 and the second light sensitive resistor 3 arranged on the second side 12.

[0045] In addition, the specific arrangement of the first light sensitive element and the second light sensitive element is not fixed, as long as it can produce different responses according to the light intensity. For example, the first light sensitive element can also be a first light sensitive diode or a first light sensitive triode. And / or, the second light sensitive element can also be a second light sensitive diode or a second light sensitive triode.

[0046] Next, referring to Figure 1 and 4 -5, 49 first light sensitive resistors 2 are arranged at intervals and constitute a 7x7 first matrix (such as Figure 3 a matrix composed of a plurality of solid circles), and the first light sensitive resistors 2 in each column of the first matrix are arranged in series. 49 second light sensitive resistors 3 are arranged at intervals and constitute a 7x7 second matrix (such as Figure 3The first light-sensitive resistor 2 and the second light-sensitive resistor 3 corresponding thereto are close to each other and constitute a light-sensitive assembly. A plurality of light-sensitive assemblies are arranged at intervals and distributed to form a third matrix. When the light passes through the light transmission hole 13 and irradiates to the second side 12, there is a column with the minimum resistance in the first matrix and a row with the minimum resistance in the second matrix, and the column with the minimum resistance in the first matrix and the row with the minimum resistance in the second matrix correspond to the column and row of the third matrix. At this time, the position of the light irradiation can be determined, the light angle can be determined according to the light-sensitive assembly at the position, and the angle of the solar panel is adjusted to ensure that the solar panel is perpendicular to the light.

[0047] The first matrix includes L1 columns, L2 columns, L3 columns, L4 columns, L5 columns, L6 columns and L7 columns. The 7 first light-sensitive resistors 2 in the L1 column are connected in series to obtain a resistance R L1 , the 7 first light-sensitive resistors 2 in the L2 column are connected in series to obtain a resistance R L2 , the 7 first light-sensitive resistors 2 in the L3 column are connected in series to obtain a resistance R L3 , the 7 first light-sensitive resistors 2 in the L4 column are connected in series to obtain a resistance R L4 , the 7 first light-sensitive resistors 2 in the L5 column are connected in series to obtain a resistance R L5 , the 7 first light-sensitive resistors 2 in the L6 column are connected in series to obtain a resistance R L6 , and the 7 first light-sensitive resistors 2 in the L7 column are connected in series to obtain a resistance R L7 . The second matrix includes H1 rows, H2 rows, H3 rows, H4 rows, H5 rows, H6 rows and H7 rows. The 7 second light-sensitive resistors 3 in the H1 row are connected in series to obtain a resistance R H1 , the 7 second light-sensitive resistors 3 in the H2 row are connected in series to obtain a resistance R H2 , the 7 second light-sensitive resistors 3 in the H3 row are connected in series to obtain a resistance R H3 , the 7 second light-sensitive resistors 3 in the H4 row are connected in series to obtain a resistance R H4 , the 7 second light-sensitive resistors 3 in the H5 row are connected in series to obtain a resistance R H5 , the 7 second light-sensitive resistors 3 in the H6 row are connected in series to obtain a resistance R H6 , and the 7 second light-sensitive resistors 3 in the H7 row are connected in series to obtain a resistance R H7 When the light passes through the light transmission hole 13 and irradiates to the second side, the resistance R L3 of the L3 column is the smallest, the resistance R H6 of the H6 row is the smallest, and the L3 column of the first matrix and the H6 row of the second matrix correspond to the column and row of the third matrix. At this time, the position of the light irradiation can be determined in the L3 column H6 row.

[0048] Of course, the connection mode of the first light-sensitive resistor 2 in the first matrix and the connection mode of the second light-sensitive resistor 3 in the second matrix are not fixed in the present application, and those skilled in the art can adjust them according to needs. For example, the first light-sensitive resistor 2 in each row of the first matrix is arranged in series, and the second light-sensitive resistor 3 in each column of the second matrix is arranged in series. At this time, when the light passes through the light transmission hole 13 and irradiates to the second side 12, there is a row with the minimum resistance value in the first matrix and a column with the minimum resistance value in the second matrix, and the row with the minimum resistance value in the first matrix and the column with the minimum resistance value in the second matrix correspond to the row and column of the third matrix, thereby determining the position of the light irradiation.

[0049] It should be noted that when the light-sensitive element is a light-sensitive diode or a light-sensitive triode, the matrix formed by the two light-sensitive elements determines the position of the light irradiation according to the column with the maximum current in the first matrix and the row with the maximum current in the second matrix.

[0050] Next, referring to Figure 1 and Figures 4-5 , the 49 light-sensitive components in the third matrix are divided into a first light-sensitive component 4 and 48 second light-sensitive components 5. Among them, the light-sensitive component covered by the orthographic projection of the light transmission hole 13 on the second side 12 is the first light-sensitive component 4, and the other light-sensitive components not covered by the orthographic projection of the light transmission hole 13 on the second side 12 are the second light-sensitive components 5. Taking the first light-sensitive component 4 as the center point, when the light passes through the light transmission hole 13 and irradiates to the first light-sensitive component 4, it means that the solar panel is perpendicular to the light. When the light passes through the light transmission hole 13 and irradiates to any second light-sensitive component 5, it means that the solar panel is not perpendicular to the light. At this time, the irradiation angle of the sunlight can be determined according to the position of the third matrix where the second light-sensitive component 5 is located, and then the angle of the solar panel is adjusted so that the light irradiates to the first light-sensitive component 4. Among them, the position of the third matrix where the second light-sensitive component 5 is located can be determined according to the resistance value of each column in the first matrix and the resistance value of each row in the second matrix, and the column and row of the third matrix corresponding to the column with the minimum resistance value in the first matrix and the row with the minimum resistance value in the second matrix, thereby determining the position of the third matrix where the second light-sensitive component 5 is located.

[0051] The light-sensitive component in the third matrix at the center, i.e., the light-sensitive component in the third matrix at L4 column H4 row, is the first light-sensitive component 4, and the other 48 light-sensitive components are second light-sensitive components 5. The first light-sensitive component 4 at L4 column H4 row in the third matrix is the center point. When the light transmits through the light-transmitting hole 13 to illuminate the first light-sensitive component 4 at L4 column H4 row, it indicates that the solar panel is perpendicular to the light. When the light transmits through the light-transmitting hole 13 to illuminate other positions, such as the second light-sensitive component 5 at L3 column H6 row, it indicates that the solar panel is not perpendicular to the light. At this time, the angle of the sunlight can be determined according to the position of the third matrix where the second light-sensitive component 5 is located, and the angle of the solar panel can be adjusted so that the light illuminates the first light-sensitive component 4 at L4 column H4 row, thereby making the light perpendicular to the solar panel. The cost of the sun-tracking device in the application is mainly on the light-sensitive resistor, so the manufacturing cost is low.

[0052] It should be noted that the first light-sensitive component 4 covered by the orthographic projection of the light-transmitting hole 13 on the second side 12 means that the orthographic projection of the light-transmitting hole 13 on the second side 12 covers the first light-sensitive element and the second light-sensitive element in the first light-sensitive component 4. If the orthographic projection of the light-transmitting hole 13 on the second side 12 only covers the first light-sensitive element or the second light-sensitive element in the first light-sensitive component 4, it indicates that when the light transmits through the light-transmitting hole 13, it does not illuminate the first light-sensitive element and the second light-sensitive element in the first light-sensitive component 4 at the same time. At this time, the solar panel is not perpendicular to the light, which affects the power generation efficiency of the solar panel.

[0053] Of course, the number of columns and rows of the first matrix and the second matrix in the application is not fixed, and those skilled in the art can adjust it according to the specific application scenario. For example, the number of columns and rows of the first matrix and the second matrix can be 3, 4, 5, 6 or other values. Alternatively, the number of columns and rows of the first matrix and the second matrix can be different, such as the number of columns of the first matrix and the second matrix is 7 and the number of rows is 8. When the number of columns and rows of the first matrix and the second matrix are both even numbers and are described as 4 columns and 4 rows, the orthographic projection of the light-transmitting hole 13 on the second side 12 can cover the light-sensitive component at the second column and the third row at this time. The light-sensitive component is taken as the first light-sensitive component 4, and the other light-sensitive components are taken as the second light-sensitive component 5. When the number of columns and rows of the third matrix are different and are described as 7 columns and 8 rows, the orthographic projection of the light-transmitting hole 13 on the second side 12 can cover the light-sensitive component at L4 column H5 row at this time. The light-sensitive component is taken as the first light-sensitive component 4, and the other light-sensitive components are taken as the second light-sensitive component 5.

[0054] Next, referring to Figures 1-5, the first light-sensitive resistor 2 and the second light-sensitive resistor 3 in the light-sensitive assembly are both circular, the radius of the first light-sensitive resistor 2 is R1, the radius of the second light-sensitive resistor 3 is R2, the distance between the two light-sensitive resistors is R1+R2+L, and the minimum distance is L. The light transmission hole 13 is circular, and the radius thereof is r. Among them, in order to ensure that the light can pass through the light transmission hole 13 and simultaneously irradiate on the first light-sensitive resistor 2 and the second light-sensitive resistor 3 in the light-sensitive assembly, and avoid being able to only irradiate on the first light-sensitive resistor 2 or the second light-sensitive resistor 3, so as to be unable to simultaneously obtain the row with the minimum resistance value and the column with the minimum resistance value, and further unable to determine the irradiation position of the light, thereby affecting the determination of the angle of the light, therefore the minimum distance L is greater than or equal to 0 and less than or equal to the diameter 2r of the light transmission hole 13.

[0055] It should be noted that the minimum distance refers to the minimum distance between any two points on the boundary of two shapes. Therefore, the minimum distance L between the two circular light-sensitive resistors is determined by subtracting the radius of each light-sensitive resistor from the distance between the two centers. When the minimum distance L is equal to 0, the first light-sensitive resistor 2 and the second light-sensitive resistor 3 are externally tangent, at this time, it can not only ensure that the light can pass through the light transmission hole 13 and simultaneously irradiate on the first light-sensitive resistor 2 and the second light-sensitive resistor 3 in the light-sensitive assembly, but also avoid the light-sensitive resistors being unable to sense the light due to the overlap of the first light-sensitive resistor 2 and the second light-sensitive resistor 3 in the light-sensitive assembly, and further unable to determine the position of the light. When the minimum distance L is equal to 2r, according to the principle of pinhole imaging, when the light passes through the light transmission hole 13 and irradiates on the light-sensitive resistor, the radius of the light spot is greater than the radius r of the light transmission hole 13, but in order to ensure that the two light-sensitive resistors can receive enough light to cause a change in resistance value, therefore the minimum distance L between the two light-sensitive resistors in the light-sensitive assembly is set to 2r.

[0056] Among them, taking the first light-sensitive assembly in the L4th column and the H4th row of the third matrix irradiated by the light as an example. When the light only irradiates on the first light-sensitive resistor 2 of the first light-sensitive assembly 4 and does not irradiate on the second light-sensitive resistor 3, the resistance value R L4 min of the L4th column in the first matrix is obtained, indicating that the light irradiates on the L4th column. Since the light does not irradiate on the second light-sensitive resistor 3 of the first light-sensitive assembly 4, the row with the minimum resistance value in the second matrix cannot be determined, and further the H4th row irradiated by the light cannot be determined. Therefore, the minimum distance between the first light-sensitive resistor 2 and the second light-sensitive resistor 3 needs to be set based on the light passing through the light transmission hole 13 and being able to simultaneously irradiate on the first light-sensitive resistor 2 and the second light-sensitive resistor 3 in the light-sensitive assembly.

[0057] Of course, the shape of the light transmission hole 13 and the photoresistor is not fixed in the present application, and those skilled in the art can adjust it according to the needs. For example, the light transmission hole 13 is rectangular, elliptical or other regular or irregular shape. And / or, the first photoresistor and / or the second photoresistor can also be rectangular, elliptical or other regular or irregular shape. Among them, the light transmission hole 13, the first photoresistor 2 and the second photoresistor 3 are all irregular shapes. At this time, the minimum distance between the first photoresistor and the second photoresistor corresponding to it is greater than or equal to 0 and less than or equal to the size of the light transmission hole 13 in the direction of the line where the minimum distance is located.

[0058] Next, referring to Figure 2 , the sun tracking device further comprises a first baffle 6 and a plurality of second baffles 7, both of which are arranged on the second side 12. Among them, the first baffle 6 is arranged around the first photoresistor assembly 4, which can prevent part of the light originally irradiated on the second photoresistor assembly 5 from irradiating on the first photoresistor assembly 4 and prevent part of the light originally irradiated on the first photoresistor assembly 4 from irradiating on the second photoresistor assembly 5, thereby interfering with the adjustment of the solar panel angle, so that the sun tracking device can more stably and accurately track the sun position, and improve the power generation efficiency of the solar panel. A plurality of second baffles 7 correspond to the second photoresistor assembly 5 one by one, and the second baffle 7 is arranged around the second photoresistor assembly 5 corresponding to it, so that when the light irradiated through the light transmission hole 13 irradiates on the first photoresistor assembly 4, it prevents part of the light from irradiating on the second photoresistor assembly 5, thereby interfering with the adjustment of the solar panel angle. In addition, the arrangement of the second baffle 7 can also prevent part of the light originally irradiated on a certain second photoresistor assembly 5 from irradiating on the first photoresistor assembly 4 or other second photoresistor assemblies 5, thereby adversely affecting the adjustment of the solar panel. The projection of the light transmission hole 13 on the second side 12 completely covers the area surrounded by the first baffle 6, so as to ensure that the light irradiated through the light transmission hole 13 can irradiate on the first photoresistor 2 and the second photoresistor 3 in the area.

[0059] Among them, it is illustrated that the light irradiated through the light transmission hole 13 on the first photoresistor assembly 4 in the L4 column and the H4 row indicates that the solar panel is perpendicular to the light. In the case where the first baffle 6 and the second baffle 7 are not arranged, when the light irradiated on the first photoresistor assembly 4 in the L4 column and the H4 row, part of the light irradiates on the second photoresistor assembly 5 in the L5 column and the H4 row, at this time, the resistance R L4 of the L4 column in the first matrix and the resistance R L5The resistance R of the H4 row and the resistance R of the H5 row in the second matrix can be the same minimum value, and the two second photosensitive components 5 are located in the same column, i.e., the H6 column. Therefore, two photosensitive components with the same resistance value appear in the third matrix, i.e., the second photosensitive component 5 in the L6 column and the H5 row and the second photosensitive component 5 in the L6 column and the H4 row. In this case, the sun tracking device can consider that the light has been irradiated on the H4 row, and no longer adjust the angle of the solar panel in the direction of the row, but only adjust the angle of the solar panel in the direction of the column, which finally causes the solar panel to be unable to be perpendicular to the light. Alternatively, in the case where the first baffle 6 and the second baffle 7 are not arranged, when the light irradiating the second photosensitive component 5 arranged in the L3 column and the H4 row partially irradiates the first photosensitive component 4 in the L4 column and the H4 row, the resistance R of the L3 column and the resistance R of the L4 column can be the same minimum value, and the two second photosensitive components 5 are located in the same row, i.e., the H4 row. Therefore, two photosensitive components with the same resistance value appear in the third matrix, i.e., the second photosensitive component 5 in the L3 column and the H4 row and the first photosensitive component 4 in the L4 column and the H4 row. In this case, the sun tracking device can consider that the light has been irradiated on the first photosensitive component 4 in the L4 column and the H4 row, and no longer adjust the angle of the solar panel, which further causes the solar panel to be unable to be perpendicular to the light.

[0060] The light irradiating the first photosensitive component 4 in the L4 column and the H4 row through the light transmission hole 13 indicates that the solar panel is perpendicular to the light. In the case where the first baffle 6 and the second baffle 7 are not arranged, when the light irradiating the second photosensitive component 5 arranged in the L6 column and the H5 row partially irradiates the second photosensitive component 5 in the L6 column and the H4 row, the resistance R of the H5 row and the resistance R of the H4 row can be the same minimum value, and the two second photosensitive components 5 are located in the same column, i.e., the H6 column. Therefore, two photosensitive components with the same resistance value appear in the third matrix, i.e., the second photosensitive component 5 in the L6 column and the H5 row and the second photosensitive component 5 in the L6 column and the H4 row. In this case, the sun tracking device can consider that the light has been irradiated on the H4 row, and no longer adjust the angle of the solar panel in the direction of the row, but only adjust the angle of the solar panel in the direction of the column, which finally causes the solar panel to be unable to be perpendicular to the light. H5 and the resistance R of the H4 row H4 may be the same minimum value, and the two second photosensitive components 5 are located in the same column, i.e., the H6 column. Therefore, two photosensitive components with the same resistance value appear in the third matrix, i.e., the second photosensitive component 5 in the L6 column and the H5 row and the second photosensitive component 5 in the L6 column and the H4 row. In this case, the sun tracking device can consider that the light has been irradiated on the H4 row, and no longer adjust the angle of the solar panel in the direction of the row, but only adjust the angle of the solar panel in the direction of the column, which finally causes the solar panel to be unable to be perpendicular to the light. L3 and the resistance R of the L4 column L4 may be the same minimum value, and the two second photosensitive components 5 are located in the same row, i.e., the H4 row. Therefore, two photosensitive components with the same resistance value appear in the third matrix, i.e., the second photosensitive component 5 in the L3 column and the H4 row and the first photosensitive component 4 in the L4 column and the H4 row. In this case, the sun tracking device can consider that the light has been irradiated on the first photosensitive component 4 in the L4 column and the H4 row, and no longer adjust the angle of the solar panel, which further causes the solar panel to be unable to be perpendicular to the light.

[0061] It should be noted that in other preferred embodiments, the first baffle 6 and / or the second baffle 7 are not necessarily provided, and a person skilled in the art can select as needed. In the case where the first baffle 6 is not provided, the second baffle 7 can also prevent the light originally irradiated on the second photosensitive assembly 5 from being partially irradiated on the first photosensitive assembly 4 and prevent the light originally irradiated on the first photosensitive assembly 4 from being partially irradiated on the second photosensitive assembly 5. In the case where the second baffle 7 is not provided, the first baffle 6 can also prevent the light originally irradiated on the second photosensitive assembly 5 from being partially irradiated on the first photosensitive assembly 4 and prevent the light originally irradiated on the first photosensitive assembly 4 from being partially irradiated on the second photosensitive assembly 5. In the case where the first baffle 6 and the second baffle 7 are not provided at the same time, by adjusting the distance between the light-transmitting hole 13 and / or the adjacent photosensitive assembly, the light originally irradiated on the first photosensitive assembly 4 can be prevented from being partially irradiated on the second photosensitive assembly 5.

[0062] A person skilled in the art can understand that although some embodiments described herein include certain features included in other embodiments but not others, the combination of features of different embodiments means to be within the scope of the present application and form different embodiments. For example, in the claims of the present application, any one of the claimed embodiments can be used in any combination.

[0063] So far, the technical solution of the present application has been described in combination with the preferred embodiments shown in the drawings, but a person skilled in the art can easily understand that the protection scope of the present application is obviously not limited to these specific embodiments. A person skilled in the art can make equivalent changes or replacements to the related technical features without departing from the principles of the present application, and the technical solutions after the changes or replacements will all fall within the protection scope of the present application.

Claims

1. A sun-tracking device, characterized in that, The sun-tracking device includes: The housing includes a first side and a second side that are opposite to each other. The first side is provided with a light-transmitting hole, and light can shine on the second side through the light-transmitting hole. A plurality of first photosensitive elements are disposed at intervals on the second side inside the housing, and the distribution of the plurality of first photosensitive elements forms a first matrix; Multiple second photosensitive elements are spaced apart on the second side and correspond one-to-one with the first photosensitive element. The distribution of the multiple second photosensitive elements forms a second matrix. The second photosensitive elements and their corresponding first photosensitive elements are configured to simultaneously receive light passing through the light-transmitting hole. In the first matrix, the first photosensitive elements in each row are connected in series, and in the second matrix, the second photosensitive elements in each column are connected in series; or in the first matrix, the first photosensitive elements in each column are connected in series, and in the second matrix, the second photosensitive elements in each row are connected in series.

2. The sun-tracking device according to claim 1, characterized in that, The first photosensitive element and its corresponding second photosensitive element form a photosensitive assembly. The photosensitive assembly includes a first photosensitive assembly and a plurality of second photosensitive assemblies. The first photosensitive assembly is covered by the orthographic projection of the light-transmitting hole on the second side.

3. The sun-tracking device according to claim 2, characterized in that, The orthographic projection of the light-transmitting hole on the second side does not cover any of the second photosensitive components.

4. The sun-tracking device according to claim 2, characterized in that, The sun-tracking device also includes: A first baffle is disposed on the second side and surrounds the first photosensitive component.

5. The sun-tracking device according to claim 4, characterized in that, The orthographic projection of the light-transmitting hole on the second side completely covers the area enclosed by the first baffle.

6. The sun-tracking device according to claim 2, characterized in that, The sun-tracking device also includes: Multiple second baffles, each corresponding to a second photosensitive component, are disposed on the second side and surround the corresponding second photosensitive component.

7. The sun-tracking device according to claim 2, characterized in that, The distribution of multiple photosensitive components forms a third matrix, wherein the number of columns and rows of the third matrix is ​​odd, and the first photosensitive component is located at the center of the third matrix.

8. The sun-tracking device according to claim 1, characterized in that, The minimum distance between the first photosensitive element and its corresponding second photosensitive element is greater than or equal to 0 and less than or equal to the size of the light-transmitting aperture in the direction of the line connecting the minimum distance.

9. The sun-tracking device according to claim 1, characterized in that, The first side and the second side are parallel to each other.

10. The sun-tracking device according to claim 1, characterized in that, The first photosensitive element is a first photoresistor, a first photodiode, or a first phototransistor; and / or The second photosensitive element is a second photoresistor, a second photodiode, or a second phototransistor.

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