Solar power tracking device and solar power generation system

Abstract

This invention relates to the field of photovoltaic power generation. The invention provides a photovoltaic power generation tracking device and a photovoltaic invention system comprising a first temperature sensor, a second temperature sensor, a solar radiation intensity sensor, a timer, and an evaluation device. The evaluation device calculates the actual temperature state value for the current evaluation period based on the detection values ​​of the first temperature sensor, the second temperature sensor, and the timer during the current evaluation period. If the actual temperature state value is greater than or equal to a predetermined temperature state value, it issues an early alarm. If the actual temperature state value is less than the predetermined temperature state value, it predicts the allowable solar radiation intensity for the next evaluation period based on the actual temperature state value. The control device controls the operation of the position adjustment mechanism so that the detection value of the solar radiation intensity sensor for the next evaluation period is less than or equal to the allowable solar radiation intensity for the next evaluation period. This prevents the solar radiation intensity on the surface of the solar cell panel from becoming excessive during the next evaluation period, which would affect the lifespan of the solar cell panel.

Description

Technical Field

[0001] The present invention relates to the field of solar power generation technology, and more specifically to a solar power generation tracking device and a solar power generation system.

Background Art

[0002] Solar energy power generation devices play an extremely important role in photovoltaic power generation, especially in the field of new energy. A solar power generation device can maximize the output of converting light energy into electrical energy when it is installed at an appropriate height and the light irradiation intensity is maximized within an appropriate range, thereby enabling more energy to be obtained.

[0003] In the prior art, in order to obtain more energy, a tracking-type solar power generation device is generally adopted. For example, Patent Document CN119483458A discloses a tracking-type solar power generation device, but the following problems exist in this device. (1) It does not have a temperature monitoring means for the solar cell panel and cannot detect the temperature abnormality of the solar cell panel in a timely manner. (2) Based on the temperature monitoring results during the previous evaluation period in front of the solar cell panel, the predicted allowable solar radiation intensity for the next evaluation period is not adjusted. Therefore, the solar radiation intensity on the surface of the solar cell panel may become excessive in the next evaluation period, which may affect the service life of the solar cell panel.

Summary of the Invention

Problems to be Solved by the Invention

[0004] In order to solve the technical problems presented in the above background art, the present invention provides a solar power generation tracking device and a solar power generation system.

Means for Solving the Problems

[0005] To solve the above problems, the present invention provides a solar power generation tracking device comprising a position adjustment mechanism, wherein a mounting plate is attached to the operating end of the position adjustment mechanism, and a solar panel is attached to the mounting plate, Multiple first temperature sensors are provided on the contact surface of the mounting plate with the solar panel, and each first temperature sensor detects the surface temperature of the solar panel where it is located. A second temperature sensor detects the ambient temperature, A solar radiation intensity sensor that detects the solar radiation intensity on the surface of a solar panel, An evaluation device electrically connected to a first temperature sensor, a second temperature sensor, a control device, and a solar radiation intensity sensor, respectively. A timer that detects the usage time of the solar panel, Furthermore, The evaluation device calculates the actual temperature state value for the current evaluation period based on the detection values ​​of the first temperature sensor, the second temperature sensor, and the timer during the current evaluation period. If the actual temperature state value is greater than or equal to a predetermined temperature state value, it issues an early alarm. If the actual temperature state value is less than the predetermined temperature state value, it predicts the allowable solar radiation intensity for the next evaluation period based on the actual temperature state value. The control device discloses a photovoltaic power generation tracking device that controls the operation of the position adjustment mechanism so that the detected value of the solar radiation intensity sensor for the next evaluation period is less than or equal to the predicted allowable solar radiation intensity for the next evaluation period.

[0006] Preferably, the position adjustment mechanism comprises a tilt angle adjustment assembly and a rotation assembly, wherein the tilt angle adjustment assembly is attached to the rotation end of the rotation assembly, the mounting plate is attached to the angle adjustment end of the tilt angle adjustment assembly, and the rotation assembly is attached to a support mechanism.

[0007] Preferably, the support mechanism includes a base to which a plurality of support brackets are fixedly connected at the upper end. The rotary assembly is Fixed box and Support disc and, Multiple vertical telescopic rods, Equipped with, The fixed box is fixedly connected to the upper ends of multiple support brackets, a vertical support shaft rotatably passes through the upper end of the fixed box, and a first drive mechanism is provided inside the fixed box to rotate the vertical support shaft. The support disc is fixedly connected to the upper end of the vertical support shaft. Multiple vertical telescopic rods are arranged at horizontal intervals, with the lower ends of the vertical telescopic rods fixedly connected to the upper ends of the support discs, and the upper ends of the vertical telescopic rods fixedly connected to the tilt angle adjustment assembly.

[0008] Preferably, the tilt angle adjustment assembly is The first frame and Mounting plate and The second drive mechanism, Equipped with, The lower end of the first frame is fixedly connected to the rotating end of the rotating assembly, and the second frame is fixedly installed on the upper end of the first frame, spaced apart to the left and right. At the lower end of the mounting plate, connecting plates are fixedly connected with a gap between them on the left and right, and the two connecting plates are rotatably connected to the outside of the two second frames via left-right rotation axes. The second drive mechanism supplies power to the connecting plate, which rotates around the second frame via a pivot axis.

[0009] Preferably, the rotating shaft is rotatably connected to the corresponding second frame. A second drive mechanism is provided on one second frame, the second drive mechanism includes a motor fixedly connected to the inside of the corresponding second frame, the output shaft of the motor is coaxially connected to the drive shaft, the drive shaft rotates through the corresponding second frame and is fixedly connected to a drive gear, a driven gear that meshes with the drive gear is fixedly connected to the rotating shaft of the second frame corresponding to the motor, and a gear housing is provided on the outside of the second frame corresponding to the motor where the drive gear and driven gear are arranged.

[0010] Preferably, the evaluation device is A first acquisition module that acquires the detected values ​​of the first temperature sensor, the second temperature sensor, and the timer, A first calculation module calculates the actual temperature state value for the current evaluation period based on the detection values ​​of the first temperature sensor, the second temperature sensor, and the timer during the current evaluation period. An early warning module that issues an early warning when the actual temperature state value is above a predetermined temperature state value, A prediction module that predicts the allowable solar radiation intensity for the next evaluation period when the actual temperature state is lower than a predetermined temperature state, It is equipped with.

[0011] For each evaluation period, M temperature measurements are taken, and each time a temperature is measured, the first and second temperature sensors detect temperature simultaneously. The actual temperature state value is calculated based on the following formula: JPEG0007847915000002.jpg22147JPEG0007847915000003.jpg31147JPEG0007847915000004.jpg2220 are the temperature evaluation values ​​for the i-th temperature measurement during the j-th evaluation period. JPEG0007847915000005.jpg1323 is the temperature evaluation value of the (i-1)th temperature measurement during the j-th evaluation period. JPEG0007847915000006.jpg1420 is the average detected value of all first temperature sensors at the i-th temperature measurement during the j-th evaluation period. JPEG0007847915000007.jpg1720 is the average detected value of all second temperature sensors at the i-th temperature measurement during the j-th evaluation period. JPEG0007847915000008.jpg1413 represents the maximum allowable surface temperature of the solar panel (2). JPEG0007847915000009.jpg1320 is the standard deviation of all detection values ​​from the first temperature sensor at the i-th temperature measurement during the j-th evaluation period. JPEG0007847915000010.jpg1413 represents the operating time of the solar panel (2) at the end of the j-th evaluation period. t is the rated operating time of the solar panel (2), JPEG0007847915000011.jpg2120 is the actual temperature state value during the j-th evaluation period, JPEG0007847915000012.jpg41147 is JPEG0007847915000013.jpg1820, JPEG0007847915000014.jpg41102 is the first temperature correction coefficient obtained by combining them, JPEG0007847915000015.jpg27102 is JPEG0007847915000016.jpg1820, JPEG0007847915000017.jpg41102 is the second temperature correction coefficient obtained by combining them, JPEG0007847915000018.jpg1820 is the maximum value of the temperature evaluation values of all temperature measurements during the j-th evaluation period, JPEG0007847915000019.jpg2220, JPEG0007847915000020.jpg1720 are the temperature average evaluation weight and the temperature distribution evaluation weight respectively, JPEG0007847915000021.jpg2120, JPEG0D07847915000022.jpg1720 are the first evaluation weight and the second evaluation weight respectively, JPEG0007847915000023.jpg1620 is the maximum allowable value of the standard deviation of the detection values of all first temperature sensors.

[0012] Preferably, the prediction module A photovoltaic power generation efficiency determination unit that determines the photovoltaic power generation efficiency of the solar cell panel, A storage unit that associates and stores the operating time of the solar cell panel and the photovoltaic power generation efficiency, A first calculation unit that calculates the total allowable heat generation parameter of the solar cell panel during the (j + 1)-th evaluation period, A second calculation unit calculates the predicted allowable solar radiation intensity for the j-th evaluation period based on the overall allowable heat generation parameters of the solar panel during the j+1 evaluation period and the photovoltaic power generation efficiency of the solar panel during the j-th evaluation period. It is equipped with.

[0013] Preferably, the overall allowable heat generation parameter of the solar panel during the j+1 evaluation period is calculated based on the following formula: JPEG0007847915000024.jpg19147JPEG0007847915000025.jpg14147JPEG0007847915000026.jpg1620 are the overall allowable heat generation parameters of the solar panel during the j+1 evaluation period. JPEG0007847915000027.jpg1613 represents the specific heat capacity of the solar panel, and m represents the weight of the solar panel. JPEG0007847915000028.jpg1120 is the estimated environmental heat dissipation parameter of the solar panel during the j+1 evaluation period. JPEG0007847915000029.jpg1413 is the convection heat transfer coefficient between the air and the solar panel, and S is the heat exchange area between the air and the solar panel. JPEG0007847915000030.jpg1820 represents the operating time of the solar panel from the end of the j-th evaluation period to the end of the j+1-th evaluation period. JPEG0007847915000031.jpg1320 is the predicted ambient temperature for the j+1 evaluation period. JPEG0007847915000032.jpg1620 is the average detected value of all first temperature sensors for all temperature measurements during the j-th evaluation period. JPEG0007847915000033.jpg2020 is the average detected value of all second temperature sensors for all temperature measurements during the j-th evaluation period. JPEG0007847915000034.jpg53170 is, This is the first temperature correction coefficient obtained by combining JPEG0007847915000035.jpg55127. JPEG0007847915000036.jpg2013 is the adjustment coefficient corresponding to the actual temperature state value for the j-th evaluation period, and the range of the value is greater than 0 and less than 1. The predicted allowable solar radiation intensity for the j+1 evaluation period is calculated based on the following formula: JPEG0007847915000037.jpg35147S0 represents the irradiation area of ​​the solar panel. JPEG0007847915000038.jpg1313 is the reflectivity of a solar panel. JPEG0007847915000039.jpg1526 represents the minimum solar power generation efficiency of the solar panel during the j-th evaluation period. JPEG0007847915000040.jpg1526 represents the maximum solar power generation efficiency of the solar panel during the j-th evaluation period. JPEG0007847915000041.jpg1620 represents the predicted allowable solar radiation intensity for the j+1 evaluation period.

[0014] The present invention further discloses a solar power generation system equipped with the aforementioned solar power generation tracking device. Inventive Effects

[0015] Compared to conventional technology, the present invention has the following beneficial effects.

[0016] 1. Based on the values ​​detected by the first temperature sensor, second temperature sensor, and timer during the current evaluation period, calculate the actual temperature state value for the current evaluation period. The early warning module issues an early warning when the actual temperature value exceeds a predetermined temperature value, prompting maintenance personnel for the solar power tracking system to inspect or replace the solar panels, thereby ensuring the effective operation of the solar power tracking system.

[0017] 2. When the actual temperature is lower than the predetermined temperature (indicating that the solar panel is operating normally), the system predicts the allowable solar radiation intensity for the next evaluation period. Based on the temperature monitoring results for the previous evaluation period, the system adjusts the allowable solar radiation intensity for the next evaluation period. The control device controls the operation of the position adjustment mechanism so that the detected value of the solar radiation intensity sensor for the next evaluation period is less than or equal to the allowable solar radiation intensity for the next evaluation period, thereby preventing excessive solar radiation on the surface of the solar panel during the next evaluation period and thus avoiding affecting the lifespan of the solar panel.

[0018] The technical proposal of the present invention will be described in more detail below with reference to the drawings and embodiments. [Brief explanation of the drawing]

[0019] The accompanying drawings provide further understanding of the present invention, constitute part of the specification, and are used in conjunction with the embodiments of the present invention to illustrate the invention, and do not limit the present invention.

[0020] [Figure 1] This is a schematic block diagram of the present invention.

[0021] [Figure 2] This is a schematic diagram of the structure of the present invention.

[0022] [Figure 3] This is a schematic diagram of the local structure of the second drive mechanism of the present invention. [Modes for carrying out the invention]

[0023] Preferred embodiments of the present invention will be described below with reference to the attached drawings. It should be understood that the preferred embodiments described herein are used to explain and interpret the present invention and are not intended to limit it.

[0024] Furthermore, in this invention, terms such as "first," "second," etc., are for descriptive purposes only and do not imply a specific order or rank, nor do they limit the invention. These terms are used merely to distinguish components or operations described by the same technical terminology and should not be understood as suggesting the relative importance of such components or operations, or as implying the quantity of such technical features. Accordingly, features limited by "first," "second," etc., explicitly or implicitly include at least one such feature. In addition, the technical proposals and technical features in each embodiment can be combined with each other, provided that they are implementable by a person skilled in the art. However, if such combination of technical proposals results in a contradiction or makes implementation impossible, such combination shall be deemed not to exist and shall not be included in the scope of protection required by this invention.

[0025] The technical proposal of the present invention will be described in more detail below with reference to the drawings and embodiments.

[0026] The present invention provides the following embodiments.

[0027] In Example 1, as shown in Figures 1, 2, and 3, the embodiment of the present invention comprises a mounting plate 1 and a position adjustment mechanism, the mounting plate 1 being attached to the operating end of the position adjustment mechanism, a solar cell panel 2 being attached to the mounting plate 1, and a control device being electrically connected to the position adjustment mechanism, in a solar power generation tracking device. Multiple first temperature sensors are provided on the contact surface of the mounting plate 1 with the solar panel 2, and each first temperature sensor detects the surface temperature of the solar panel 2 where it is located. A second temperature sensor detects the ambient temperature, A solar radiation intensity sensor detects the solar radiation intensity on the surface of the solar panel 2, An evaluation device electrically connected to a first temperature sensor, a second temperature sensor, a control device, and a solar radiation intensity sensor, respectively. A timer for detecting the usage time of solar panel 2, Equipped with, The evaluation device calculates the actual temperature state value for the current evaluation period based on the detection values ​​of the first temperature sensor, the second temperature sensor, and the timer during the current evaluation period. If the actual temperature state value is greater than or equal to a predetermined temperature state value, it issues an early alarm. If the actual temperature state value is less than the predetermined temperature state value, it predicts the allowable solar radiation intensity for the next evaluation period based on the actual temperature state value. The control device provides a photovoltaic power generation tracking device that controls the operation of the position adjustment mechanism so that the detected value of the solar radiation intensity sensor for the next evaluation period is less than or equal to the predicted allowable solar radiation intensity for the next evaluation period.

[0028] Specifically, the evaluation device is: A first acquisition module that acquires the detected values ​​of the first temperature sensor, the second temperature sensor, and the timer, A first calculation module calculates the actual temperature state value for the current evaluation period based on the detection values ​​of the first temperature sensor, the second temperature sensor, and the timer during the current evaluation period. An early warning module that issues an early warning when the actual temperature state value is above a predetermined temperature state value, A prediction module that predicts the allowable solar radiation intensity for the next evaluation period when the actual temperature state value is lower than a predetermined temperature state value, It is equipped with.

[0029] Specifically, the position adjustment mechanism comprises a tilt angle adjustment assembly 3 and a rotation assembly 4. The tilt angle adjustment assembly 3 is attached to the rotation end of the rotation assembly 4, the mounting plate 1 is attached to the angle adjustment end of the tilt angle adjustment assembly 3, and the rotation assembly 4 is attached to the support mechanism 5.

[0030] Specifically, the present invention may further include a second early alarm device that provides an early alarm when the test value of any of the temperature sensors is greater than a predetermined temperature threshold.

[0031] The control device adjusts the orientation of the solar panel 2 by controlling the rotation assembly 4 and the tilt angle adjustment assembly 3 according to the azimuth of the sun to adjust the position of the solar panel 2. This is a prior art, such as CN118939013B.

[0032] The present invention allows for the determination of the target orientation / optimal light-gathering position of the solar cell panel 2 according to the solar orientation using prior art (the target orientation includes the target horizontal orientation and the target vertical tilt angle). Subsequently, the rotation assembly 4 is first adjusted to move the solar cell panel 2 to the target horizontal orientation, and then the tilt angle adjustment assembly 3 is adjusted within a predetermined range of the target vertical tilt angle, thereby maximizing the solar radiation intensity on the surface of the solar cell panel 2 at the final vertical tilt angle position, while not exceeding the predicted allowable solar radiation intensity for the next evaluation period.

[0033] The length of each evaluation period is a predetermined value, for example, 10 minutes.

[0034] The beneficial effects of the above technical proposal are as follows:

[0035] 1. Based on the values ​​detected by the first temperature sensor, second temperature sensor, and timer during the current evaluation period, calculate the actual temperature state value for the current evaluation period. The early warning module issues an early warning when the actual temperature state value exceeds a predetermined temperature state value, prompting the maintenance personnel of the solar power tracking device to inspect or replace the solar panel 2, thereby ensuring the effective operation of the solar power tracking device.

[0036] 2. When the actual temperature state value is lower than a predetermined temperature state value (indicating that the operating state of the solar panel 2 is normal), the control device predicts the predicted allowable solar radiation intensity for the next evaluation period, adjusts the predicted allowable solar radiation intensity for the next evaluation period based on the temperature monitoring results for the previous evaluation period of the solar panel 2, and controls the operation of the position adjustment mechanism so that the detected value of the solar radiation intensity sensor for the next evaluation period is less than or equal to the predicted allowable solar radiation intensity for the next evaluation period, thereby preventing the solar radiation intensity on the surface of the solar panel 2 from becoming excessive during the next evaluation period and affecting the lifespan of the solar panel 2.

[0037] In Example 2, based on Example 1, as shown in Figure 2, the support mechanism 5 includes a base 51 to which a plurality of support brackets 52 are fixedly connected at the upper end, The aforementioned rotating assembly 4 is Fixed box 41 and Support disk 42 and Multiple vertical telescopic rods 43, Equipped with, The fixed box 41 is fixedly connected to the upper ends of multiple support brackets 52, and a vertical support shaft 44 rotates through the upper end of the fixed box 41. A first drive mechanism for rotationally driving the vertical support shaft 44 is provided inside the fixed box 41. The support disk 42 is fixedly connected to the upper end of the vertical support shaft 44. Multiple vertical telescopic rods 43 are arranged horizontally at intervals, the lower ends of the vertical telescopic rods 43 are fixedly connected to the upper ends of the support discs 42, and the upper ends of the vertical telescopic rods 43 are fixedly connected to the tilt angle adjustment assembly 3.

[0038] The tilt angle adjustment assembly 3 is First frame 31, Mounting plate 1 and The second drive mechanism 33, Equipped with, The lower end of the first frame 31 is fixedly connected to the rotating end of the rotating assembly 4, and the second frame 32 is fixedly installed on the upper end of the first frame 31 with a gap between them to the left and right. Two connecting plates 37 are fixedly connected to the lower end of the mounting plate 1, spaced apart on the left and right. The two connecting plates 37 are rotatably connected to the outside of the two second frames 32 via left-right rotation axes 34. The second drive mechanism 33 supplies power to the connecting plate 37 to rotate around the second frame 32 via the rotating shaft 34.

[0039] The rotating shaft 34 is rotatably connected to the corresponding second frame 32. A second drive mechanism 33 is provided on one second frame 32, and the second drive mechanism 33 includes a motor 331 fixedly connected to the inside of the corresponding second frame 32, the output shaft of the motor 331 is coaxially connected to a drive shaft 36, the drive shaft 36 rotates through the corresponding second frame 32 and is fixedly connected to a drive gear 332, a driven gear 333 that meshes with the drive gear 332 is fixedly connected to the rotating shaft 34 of the second frame 32 corresponding to the motor 331, and a gear housing 35 is provided on the outside of the second frame 32 corresponding to the motor 331, in which the drive gear 332 and the driven gear 333 are arranged.

[0040] The second drive mechanism 33 of the present invention may be any other device capable of supplying power to rotate the connecting plate 37 around the frame 32 via the rotating shaft 34.

[0041] The first drive mechanism of the present invention is not shown, and the structure of the first drive mechanism can be seen by referring to the structure of the second drive mechanism 33.

[0042] The vertical telescopic rod 43 may be a conventional electric or manual vertical telescopic rod.

[0043] The operating principle and beneficial effects of the above proposed technology are as follows:

[0044] The vertical telescopic rod 43 of the present invention may adjust the height of the tilt angle adjustment assembly 3, the mounting plate 1, and the solar panel 2. In the rotational assembly 4 of the present invention, the vertical support shaft 44 is rotationally driven by the first drive mechanism, which drives the support disk 42, the vertical telescopic rod 43, the tilt adjustment assembly 3, the mounting plate 1, and the solar panel 2 to adjust their horizontal orientation. The tilt adjustment assembly 3 of the present invention allows the tilt angles of the mounting plate 1, the connecting plate 37, and the solar panel 2 to be adjusted by the second drive mechanism 33 supplying power to the connecting plate 37 to rotate around the second frame 32 via the rotation shaft 34.

[0045] The present invention can satisfy different positional requirements for the solar cell 2 by adjusting its height, horizontal orientation, and tilt angle using a position adjustment mechanism.

[0046] In Example 3, based on Example 1 or 2, M temperature measurements were taken for each evaluation period, and each time a temperature measurement was taken, the first temperature sensor and the second temperature sensor detected simultaneously. The actual temperature state value is calculated based on the following formula. JPEG0007847915000042.jpg22147JPEG0007847915000043.jpg31147JPEG0007847915000044.jpg2220 are the temperature evaluation values ​​for the i-th temperature measurement during the j-th evaluation period. JPEG0007847915000045.jpg1323 is the temperature evaluation value of the (i-1)th temperature measurement during the j-th evaluation period. JPEG0007847915000046.jpg1420 is the average detected value of all first temperature sensors at the i-th temperature measurement during the j-th evaluation period. JPEG0007847915000047.jpg1720 is the average detected value of all second temperature sensors at the i-th temperature measurement during the j-th evaluation period. JPEG0007847915000048.jpg1413 represents the maximum allowable surface temperature of the surface of solar panel 2. JPEG0007847915000049.jpg1320 is the standard deviation of all first temperature sensor readings at the i-th temperature measurement during the j-th evaluation period. JPEG0007847915000050.jpg1413 represents the operating time of solar panel 2 at the end of evaluation period j, where t is the rated operating time of solar panel 2. JPEG0007847915000051.jpg2120 is the actual temperature state value for the j-th evaluation period. JPEG0007847915000052.jpg41147 is, JPEG0007847915000053.jpg1820, The first temperature correction coefficient obtained by combining JPEG0007847915000054.jpg41102 (the value is greater than 0 and less than 1. JPEG0007847915000055.jpg1820-Temperature parameter( JPEG0007847915000056.jpg41102 is the temperature parameter of the i-th temperature measurement in the j-th evaluation period) - obtained from the first temperature correction coefficient mapping table, The smaller the value of JPEG0007847915000057.jpg1820, the larger the temperature parameter and the smaller the value of the first temperature correction coefficient. (The mapping table is obtainable based on the test.) JPEG0007847915000058.jpg27102 is, JPEG0007847915000059.jpg1820, The second temperature correction coefficient obtained by combining JPEG0007847915000060.jpg41102 (the value is greater than 0 and less than 1) is predetermined. JPEG0007847915000061.jpg1820-Temperature parameter( JPEG0007847915000062.jpg41102 is the temperature parameter of the i-th temperature measurement in the j-th evaluation period) - obtained from the second temperature correction coefficient mapping table, The smaller the value of JPEG0007847915000063.jpg1820, the larger the temperature parameter and the smaller the value of the second temperature correction coefficient. (The mapping table is obtainable based on the test.) JPEG0007847915000064.jpg1820 is the maximum value of all temperature evaluation values ​​measured during the j-th evaluation period. JPEG0007847915000065.jpg2220, JPEG0007847915000066.jpg1720 contains the average temperature evaluation weight and the temperature distribution evaluation weight, respectively (the values ​​are greater than 0 and less than 1, and may be 0.73 and 0.27 respectively. The sum of the average temperature evaluation weight and the temperature distribution evaluation weight is 1). JPEG0007847915000067.jpg2120, JPEG0007847915000068.jpg1720 has a first evaluation weight and a second evaluation weight (each value is greater than 0 and less than 1. They may be 0.59 and 0.41, respectively. The sum of the first and second evaluation weights is 1). JPEG0007847915000069.jpg1620 represents the maximum allowable standard deviation of the detected values ​​from all first temperature sensors. The unit 10 in JPEG0007847915000070.jpg2264 is, The units are the same as JPEG0007847915000071.jpg2464.

[0047] The beneficial effects of the above technical proposal are as follows: JPEG0007847915000072.jpg57170 shows the average temperature state of the i-th temperature measurement during the j-th evaluation period. JPEG0007847915000073.jpg56170 shows the temperature distribution state of the i-th temperature measurement during the j-th evaluation period. JPEG0007847915000074.jpg58170 shows the change in temperature evaluation value during the j-th evaluation period. By combining the average temperature state and temperature distribution state measured at each measurement during the j-th evaluation period, the temperature evaluation value for each measurement during the j-th evaluation period can be obtained. Furthermore, by combining the state of change in the temperature evaluation value during the j-th evaluation period, the actual temperature state value for the j-th evaluation period can be obtained. This calculation is highly reliable and can provide timely warnings if there are anomalies in the average temperature, temperature distribution, or temperature evaluation value.

[0048] In Example 4, the prediction module is based on any one of Examples 1 to 3. A solar power generation efficiency determination unit that determines the solar power generation efficiency of solar panel 2, A memory unit that stores the operating time of the solar panel 2 in association with the solar power generation efficiency, A first calculation unit calculates the overall allowable heat generation parameter of solar panel 2 during the j+1 evaluation period, A second calculation unit calculates the predicted allowable solar radiation intensity for the j-th evaluation period based on the overall allowable heat generation parameters of the solar panel 2 during the j+1 evaluation period and the photovoltaic power generation efficiency of the solar panel 2 during the j-th evaluation period. It is equipped with.

[0049] Specifically, the overall allowable heat generation parameter of solar panel 2 during the j+1 evaluation period is calculated based on the following formula: JPEG0007847915000075.jpg19147JPEG0007847915000076.jpg14147JPEG0007847915000077.jpg1620 are the overall allowable heat generation parameters of solar panel 2 during the j+1 evaluation period. JPEG0007847915000078.jpg1613 represents the specific heat capacity of solar panel 2, and m is the weight of solar panel 2. JPEG0007847915000079.jpg1120 is the estimated environmental heat dissipation parameter of solar panel 2 during the j+1 evaluation period. JPEG0007847915000080.jpg1413 is the convection heat transfer coefficient between the air and the solar panel 2, and S is the heat exchange area between the air and the solar panel 2. JPEG0007847915000081.jpg1820 represents the operating time of solar panel 2 from the end of evaluation period j to the end of evaluation period j+1. JPEG0007847915000082.jpg1320 is the predicted ambient temperature for the j+1 evaluation period. JPEG0007847915000083.jpg1620 is the average detected value of all first temperature sensors for all temperature measurements during the j-th evaluation period. JPEG0007847915000084.jpg2020 is the average detected value of all second temperature sensors for all temperature measurements during the j-th evaluation period. JPEG0007847915000085.jpg53170 is, The first temperature correction coefficient obtained by combining JPEG0007847915000086.jpg55127 (the value is greater than 0 and less than 1. JPEG0007847915000087.jpg1820-Temperature parameter( JPEG0007847915000088.jpg3164 is the temperature parameter for the jth evaluation period) - obtained from the first temperature correction coefficient mapping table, The smaller the value of JPEG0007847915000089.jpg1820, the larger the temperature parameter and the smaller the value of the first temperature correction coefficient. JPEG0007847915000090.jpg2013 is an adjustment coefficient corresponding to the actual temperature state value for the j-th evaluation period, and its range is greater than 0 and less than 1, with the larger the actual temperature state value for the j-th evaluation period, JPEG0007847915000091.jpg2013 is small, The predicted allowable solar radiation intensity for the j+1 evaluation period is calculated based on the following formula: JPEG0007847915000092.jpg35147S0 represents the irradiation area of ​​solar panel 2. JPEG0007847915000093.jpg1313 is the reflectivity of solar panel 2. JPEG0007847915000094.jpg1526 represents the minimum solar power generation efficiency of solar panel 2 during the j-th evaluation period. JPEG0007847915000095.jpg1526 represents the maximum solar power generation efficiency of solar panel 2 during the j-th evaluation period. JPEG0007847915000096.jpg1620 represents the predicted allowable solar radiation intensity for the j+1 evaluation period.

[0050] The beneficial effects of the above technical proposal are as follows: JPEG0007847915000097.jpg24170 is the allowable heat generation parameter of the solar cell panel 2 during the j+1 evaluation period, determined considering the allowable temperature rise state of the solar cell panel 2. JPEG0007847915000098.jpg3764 is the estimated environmental heat dissipation parameter of solar panel 2 during the j+1 evaluation period. Based on both, the overall allowable heat generation parameter of solar panel 2 during the j+1 evaluation period is obtained, as well as the overall allowable heat generation parameter of solar panel 2 and the photovoltaic power generation efficiency parameter of solar panel 2 during the j+1 evaluation period. Based on JPEG0007847915000099.jpg35147, the predicted allowable solar radiation intensity for the j+1 evaluation period is calculated. This calculation is highly reliable.

[0051] Clearly, those skilled in the art can implement various modifications and variations of the present invention without departing from the spirit and scope of the invention. Therefore, if these modifications and variations of the present invention fall within the scope of the claims and equivalents of the present invention, the present invention is intended to encompass these modifications and variations as well. [Explanation of symbols]

[0052] 1: Mounting plate 2: Solar panels 3: Tilt angle adjustment assembly 31: First Frame 32: Second Frame 33: Second drive mechanism 331: Motor 332: Drive gear 333: Driven gear 34: Rotation axis 35: Gear Housing 36: Drive shaft 37: Connecting plate 4: Rotary Assembly 41: Fixed Box 42: Fixed disk 43: Vertical telescopic rod 44: Vertical support shaft 5: Support mechanism 51: Bass 52: Support bracket

Claims

1. A solar power generation tracking device comprising a position adjustment mechanism, wherein a mounting plate (1) is attached to the operating end of the position adjustment mechanism, and a solar cell panel (2) is attached to the mounting plate (1), Multiple first temperature sensors are provided on the contact surface of the mounting plate (1) with the solar cell panel (2), and each first temperature sensor detects the surface temperature of the solar cell panel (2) where it is located. A second temperature sensor detects the ambient temperature, A solar radiation intensity sensor for detecting the solar radiation intensity on the surface of the solar cell panel (2), An evaluation device electrically connected to the first temperature sensor, the second temperature sensor, the control device, and the solar radiation intensity sensor, A timer for detecting the usage time of the solar panel (2), Furthermore, The evaluation device calculates the actual temperature state value for the current evaluation period based on the detection values ​​of the first temperature sensor, the second temperature sensor, and the timer during the current evaluation period, issues an early alarm if the actual temperature state value is equal to or greater than a predetermined temperature state value, and predicts the allowable solar radiation intensity for the next evaluation period based on the actual temperature state value if the actual temperature state value is less than the predetermined temperature state value. The photovoltaic power generation tracking device is characterized in that the control device controls the operation of the position adjustment mechanism so that the detected value of the solar radiation intensity sensor for the next evaluation period is less than or equal to the predicted allowable solar radiation intensity for the next evaluation period.

2. The position adjustment mechanism comprises a tilt angle adjustment assembly (3) and a rotation assembly (4), wherein the tilt angle adjustment assembly (3) is attached to the rotation end of the rotation assembly (4), the mounting plate (1) is attached to the angle adjustment end of the tilt angle adjustment assembly (3), and the rotation assembly (4) is attached to a support mechanism (5), as described in claim 1.

3. The support mechanism (5) includes a base (51) to which a plurality of support brackets (52) are fixedly connected at the upper end. The rotating assembly (4) is Fixed box (41), Support disc (42) and Multiple vertical telescopic rods (43), Equipped with, The fixing box (41) is fixedly connected to the upper ends of the plurality of support brackets (52), a vertical support shaft (44) rotates through the upper end of the fixing box (41), and a first drive mechanism for rotationally driving the vertical support shaft (44) is provided inside the fixing box (41). The support disk (42) is fixedly connected to the upper end of the vertical support shaft (44), The photovoltaic tracking device according to claim 2, characterized in that the plurality of vertical telescopic rods (43) are arranged horizontally at intervals, the lower ends of the vertical telescopic rods (43) are fixedly connected to the upper ends of the support disc (42), and the upper ends of the vertical telescopic rods (43) are fixedly connected to the tilt angle adjustment assembly (3).

4. The tilt angle adjustment assembly (3) is First frame (31), The aforementioned mounting plate (1) and, The second drive mechanism (33) and Equipped with, The lower end of the first frame (31) is fixedly connected to the rotating end of the rotating assembly (4), and the second frame (32) is fixedly installed on the upper end of the first frame (31) with a gap between them to the left and right. Two connecting plates (37) are fixedly connected to the lower end of the mounting plate (1) with a gap between them to the left and right, and the two connecting plates (37) are rotatably connected to the outside of the two second frames (32) via left-right rotation axes (34). The solar power tracking device according to claim 2, characterized in that the second drive mechanism (33) supplies power to the connecting plate (37) to rotate around the second frame (32) via the rotating shaft (34).

5. The rotating shaft (34) is rotatably connected to the corresponding second frame (32), A second drive mechanism (33) is provided in one of the second frames (32), The second drive mechanism (33) comprises a motor (331) fixedly connected to the inside of the corresponding second frame (32), the output shaft of the motor (331) being coaxially connected to a drive shaft (36), the drive shaft (36) rotatably passing through the corresponding second frame (32) and fixedly connected to a drive gear (332), and a driven gear (333) that meshes with the drive gear (332) being fixedly connected to the rotating shaft (34) of the second frame (32) corresponding to the motor (331). The solar power tracking device according to claim 4, characterized in that a gear housing (35) is provided on the outside of the second frame (32) corresponding to the motor (331), in which the drive gear (332) and the driven gear (333) are arranged.

6. The evaluation device is A first acquisition module that acquires the detected values ​​of the first temperature sensor, the second temperature sensor, and the timer, A first calculation module calculates the actual temperature state value for the current evaluation period based on the detected values ​​of the first temperature sensor, the second temperature sensor, and the timer during the current evaluation period. An early warning module that issues an early warning when the actual temperature state value is equal to or greater than a predetermined temperature state value, A prediction module that predicts the allowable solar radiation intensity for the next evaluation period when the actual temperature state value is smaller than the predetermined temperature state value, The solar power generation tracking device according to claim 1, comprising:

7. For each of the aforementioned evaluation periods, M temperature measurements are taken, and each time a temperature is measured, the first temperature sensor and the second temperature sensor detect temperature simultaneously. The actual temperature state value mentioned above is calculated based on the following formula: This is the temperature evaluation value of the i-th temperature measurement in the j-th evaluation period. This is the temperature evaluation value of the i-1 temperature measurement during the aforementioned evaluation period j, This is the average detected value of all the first temperature sensors during the i-th temperature measurement in the j evaluation period. This is the average detected value of all the second temperature sensors during the i-th temperature measurement in the j evaluation period. This is the maximum allowable surface temperature of the surface of the solar cell panel (2), This is the standard deviation of all the detected values ​​of the first temperature sensor during the i-th temperature measurement in the j evaluation period. This is the operating time of the solar cell panel (2) at the end of the j evaluation period, t is the rated operating time of the solar cell panel (2), This is the actual temperature state value during the j evaluation period, teeth, 、 This is the first temperature correction coefficient obtained by combining the following: teeth, 、 This is the second temperature correction coefficient obtained by combining the following: This is the maximum value of all temperature evaluation values ​​measured during the aforementioned evaluation period j. 、 These are the temperature average evaluation weight and the temperature distribution evaluation weight, respectively. 、 These are the first evaluation weight and the second evaluation weight, respectively. This is the maximum allowable standard deviation of all the detected values ​​from the first temperature sensor. The solar power generation tracking device according to feature 6.

8. The aforementioned prediction module is A solar power generation efficiency determination unit for determining the solar power generation efficiency of the solar panel (2), A storage unit that stores the operating time of the solar cell panel (2) and the solar power generation efficiency in relation to each other, A first calculation unit for calculating the overall allowable heat generation parameter of the solar cell panel (2) during the j+1 evaluation period, A second calculation unit calculates the predicted allowable solar radiation intensity for the j evaluation period based on the overall allowable heat generation parameter of the solar panel (2) during the j+1 evaluation period and the photovoltaic power generation efficiency of the solar panel (2) during the j evaluation period, The solar power generation tracking device according to claim 7, comprising:

9. The overall allowable heat generation parameter of the solar cell panel (2) during the j+1 evaluation period is calculated based on the following formula: This is the overall allowable heat generation parameter of the solar cell panel (2) during the j+1 evaluation period, m is the specific heat capacity of the solar cell panel (2), and m is the weight of the solar cell panel (2). This is the estimated environmental heat dissipation parameter of the solar cell panel (2) during the j+1 evaluation period, is the convective heat transfer coefficient between the air and the solar cell panel (2), and S is the heat exchange area between the air and the solar cell panel (2). This is the operating time of the solar cell panel (2) from the end of the j evaluation period to the end of the j+1 evaluation period. This is the predicted ambient temperature for the j+1 evaluation period, This is the average detected value of all the first temperature sensors for all the temperature measurements during the j evaluation period. This is the average detected value of all the second temperature sensors for all the temperature measurements during the j evaluation period. teeth, This is the first temperature correction coefficient obtained by combining the following: This is an adjustment coefficient corresponding to the actual temperature state value during the j evaluation period, and its range is greater than 0 and less than 1. The predicted allowable solar radiation intensity for the j+1 evaluation period is calculated based on the following formula: S 0 This is the irradiation area of ​​the solar cell panel (2), This is the reflectance of the solar cell panel (2), This is the minimum value of the photovoltaic power generation efficiency of the solar cell panel (2) during the j evaluation period, This is the maximum value of the solar power generation efficiency of the solar panel (2) during the evaluation period j, This is the predicted allowable solar radiation intensity for the j+1 evaluation period. The solar power generation tracking device according to claim 8.

10. It is a solar power generation system, A solar power generation system characterized by comprising a solar power generation tracking device according to any one of claims 1 to 9.

Images