Photovoltaic module temperature monitoring system
By combining the power supply comparison module and the temperature sensing component, combined with the wireless data transmission of the combiner and antenna, the problems of high cost and low resolution of photovoltaic module temperature measurement are solved, high-precision temperature detection and timely processing are achieved, and the service life of the photovoltaic module is extended.
Patent Information
- Application Number
- CN202422493036.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-15
- Publication Date
- 2025-10-03
- Estimated Expiration
- 2034-10-15
AI Technical Summary
The photovoltaic module temperature measurement devices in the prior art are expensive and have low resolution, and cannot achieve high-precision detection.
The system uses a power supply comparison module and multiple temperature sensing components to receive radiation energy through wireless connection for temperature measurement, uses a combiner and antenna to transmit data, and combines with the ambient temperature detection component to perform calculus calculations to achieve high-precision temperature detection.
It achieves high-precision detection of photovoltaic module temperature, handles high temperatures in a timely manner to avoid damage, reduces costs and improves temperature measurement accuracy.
Smart Images
Figure CN223414853U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of temperature measurement technology, and in particular to a photovoltaic module temperature monitoring system. Background Art
[0002] Currently, photovoltaic cells utilize the photovoltaic effect to directly convert solar radiation into electricity, a process used for solar power generation. Typically, due to the low energy density of the radiation, more photovoltaic panels are required to capture a larger area of solar radiation. Furthermore, to capture more solar radiation, additional components are needed to ensure stable and efficient solar radiation across the four seasons, day and night, and the changing weather. However, when photovoltaic panels are exposed to solar radiation for extended periods, their surface temperatures can reach 200-300°C or even higher. These elevated temperatures can damage the panels, so timely and accurate monitoring of their surface temperature can not only prevent damage but also extend their service life.
[0003] In the existing technology, thermal imaging temperature measuring instruments are set up in front of photovoltaic arrays to perform comprehensive temperature measurement on photovoltaic modules. This requires a large number of thermal imaging temperature measuring instruments, which is relatively expensive. In addition, the low-resolution thermal imaging temperature measuring instruments take blurry pictures, making it impossible to perform high-precision detection of photovoltaic modules.
[0004] Therefore, how to provide a device that can accurately measure the temperature of photovoltaic modules has become an urgent problem to be solved. Utility Model Content
[0005] A technical problem to be solved by this application is: how to provide a device that can accurately measure the temperature of a photovoltaic module.
[0006] To solve the above technical problems, the present invention provides a photovoltaic module temperature monitoring system, comprising:
[0007] A power supply comparison module is provided close to the photovoltaic module and is used to radiate energy into the space according to temperature measurement instructions;
[0008] Multiple temperature sensing components are distributed at multiple test points on the photovoltaic module and are wirelessly connected to the power supply comparison module to receive radiation energy and generate electrical energy based on the radiation energy. Each temperature sensing component is used to sense the temperature at the test point to obtain temperature measurement data, and transmit the sensed temperature data to the power supply comparison module.
[0009] In this embodiment, the power supply comparison module includes:
[0010] The power supply comparison module includes:
[0011] A combiner, which is used to send out electromagnetic wave signals according to temperature measurement instructions;
[0012] The antenna is set close to the photovoltaic component and connected to the combiner. It is used to radiate energy into space according to the electromagnetic wave signal. The antenna is also wirelessly connected to the temperature sensor component to receive temperature data sent by the temperature sensor component.
[0013] In this embodiment, the power supply comparison module further includes:
[0014] The indicating device is connected to the combiner through a coaxial line to send a temperature measurement instruction to the combiner.
[0015] In this embodiment, the antenna includes a first antenna and a second antenna, and the combiner is connected to the first antenna and the second antenna respectively. The first antenna and the second antenna respectively receive electromagnetic wave signals to radiate energy into space according to the electromagnetic wave signals respectively, and are used to receive temperature data sent by the temperature sensing component.
[0016] In this embodiment, the first antenna and the second antenna are both connected to the combiner via a low-loss radio frequency line.
[0017] In this embodiment, the first antenna and the second antenna are both adsorbed on the photovoltaic component.
[0018] In this embodiment, the temperature sensing component further transmits the temperature measurement data to the combiner via the first antenna and / or the second antenna.
[0019] In this embodiment, it also includes:
[0020] The ambient temperature detection component is used to detect the ambient temperature and obtain ambient temperature data. The ambient temperature detection component is connected to the combiner to transmit the ambient temperature to the combiner.
[0021] In this embodiment, the ambient temperature detection component is disposed close to the combiner.
[0022] In this embodiment, the temperature sensing component is a temperature sensor.
[0023] The photovoltaic module temperature monitoring system provided by the present application includes a power supply comparison module and multiple temperature sensor components. The power supply comparison module receives a temperature measurement instruction and radiates energy into space according to the temperature measurement instruction. The power supply comparison module is arranged near the photovoltaic module so that the energy can be radiated around the photovoltaic module, so that the multiple temperature sensor components distributed on the photovoltaic module can receive the radiated energy and convert the radiated energy into electrical energy, thereby powering itself, so that the temperature sensor components can sense the temperature of the test point of the photovoltaic module. By setting multiple temperature sensor components on the photovoltaic module, temperature tests can be performed on multiple temperature measurement points on the photovoltaic module to obtain temperature data of multiple different temperature measurement points. The multiple temperature sensor components also transmit the temperature data of the multiple different temperature measurement points to the power supply comparison module. The power supply comparison module calculates the temperature measurement data of the multiple temperature points to obtain more accurate temperature data of the photovoltaic module, thereby obtaining more accurate temperature data of the photovoltaic module, realizing high-precision detection of the temperature of the photovoltaic module, thereby allowing users to take timely measures when the temperature of the photovoltaic module is too high, avoiding damage to the photovoltaic module and extending the life of the photovoltaic module. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.
[0025] Figure 1 This is a block diagram of a photovoltaic module temperature monitoring system disclosed in an embodiment of the present application;
[0026] Figure 2 This is a block diagram of another photovoltaic module temperature monitoring system disclosed in an embodiment of the present application.
[0027] Description of reference numerals:
[0028] 1. Photovoltaic module temperature monitoring system; 11. Power supply comparison module; 111. Combiner; 112. Antenna; 1121. First antenna; 1122. Second antenna; 113. Indicator; 12. Temperature sensor assembly; 13. Ambient temperature detection assembly. DETAILED DESCRIPTION
[0029] The following detailed description of the embodiments of the present application is provided in conjunction with the accompanying drawings and examples. The detailed description of the following examples and the accompanying drawings are intended to illustrate the principles of the present application, but are not intended to limit the scope of the present application. The present application may be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but rather includes all technical solutions within the scope of the claims.
[0030] The present application provides these embodiments to make this application thorough and complete, and to fully express the scope of this application to those skilled in the art. It should be noted that: unless otherwise specifically stated, the relative arrangement of parts and steps, the composition of materials, numerical expressions and numerical values set forth in these embodiments should be interpreted as merely exemplary, and not as limiting.
[0031] It should be noted that, in the description of this application, unless otherwise specified, "plurality" means greater than or equal to two; the terms "upper," "lower," "left," "right," "inner," "outer," and the like, indicating directions or positional relationships, are intended solely to facilitate the description of this application and simplify the description, and do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.
[0032] In addition, the terms "first," "second," and similar terms used in this application do not denote any order, quantity, or importance, but are simply used to distinguish different parts. "Perpendicular" does not mean perpendicular in the strict sense, but rather means within the tolerance range. "Parallel" does not mean parallel in the strict sense, but rather means within the tolerance range. "Include" or "comprising" and similar terms mean that the elements preceding the word include the elements listed after the word, and do not exclude the possibility of other elements being included.
[0033] It should also be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections or indirect connections through an intermediary. A person of ordinary skill in the art will understand the specific meanings of the above terms in this application depending on the specific circumstances. When a specific device is described as being located between a first device and a second device, there may or may not be an intervening device between the specific device and the first or second device.
[0034] All terms used in this application have the same meaning as understood by one of ordinary skill in the art to which this application belongs, unless otherwise specifically defined. It should also be understood that terms defined in, for example, common dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology and should not be interpreted in an idealized or highly formal sense, unless explicitly defined as such herein.
[0035] In related technologies, when photovoltaic modules receive solar radiation for a long time, their surface temperature will reach 200-300°C, or even higher. High temperatures can damage photovoltaic panels. If the temperature of photovoltaic modules cannot be accurately determined and promptly treated, high temperatures can cause damage to the modules. Therefore, this application provides a photovoltaic module temperature monitoring system that can accurately measure the temperature of photovoltaic modules. This allows timely treatment when the modules are at high temperatures, thus preventing damage.
[0036] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, they should be considered part of the specification.
[0037] like Figure 1 As shown, the present application provides a photovoltaic module temperature monitoring system 1, comprising:
[0038] The power supply comparison module 11 is arranged close to the photovoltaic module and is used to radiate energy into the space according to the temperature measurement instruction;
[0039] Multiple temperature sensing components 12 are distributed at multiple test points on the photovoltaic component and are wirelessly connected to the power supply comparison module 11 for receiving radiation energy and generating electrical energy based on the radiation energy. Each temperature sensing component 12 is used to sense the temperature at the test point to obtain temperature measurement data, and transmit the sensed temperature data to the power supply comparison module 11.
[0040] In this embodiment, the power supply comparison module 11 can be used to connect to the temperature sensing component 12 to wirelessly transmit the radiation energy to the temperature sensing component 12. The temperature sensing component 12 is a temperature sensor that can convert the radiation energy into electrical energy to power itself. There are multiple temperature sensors, and the multiple temperature sensors are distributed at multiple temperature measuring points of the photovoltaic component, so that the temperature sensor can perform temperature testing on the temperature measuring point when it is powered.
[0041] The present application provides a photovoltaic module temperature monitoring system 1, comprising a power supply comparison module 11 and multiple temperature sensor components 12. The power supply comparison module 11 receives a temperature measurement instruction and radiates energy into space according to the temperature measurement instruction. The power supply comparison module 11 is arranged close to the photovoltaic module so that the energy can be radiated around the photovoltaic module, so that the multiple temperature sensor components 12 distributed on the photovoltaic module can receive the radiated energy and convert the radiated energy into electrical energy, thereby powering themselves, so that the temperature sensor components 12 can sense the temperature of the photovoltaic module to be measured. By setting multiple temperature sensor components 12 on the photovoltaic module, temperature tests can be performed on multiple temperature measurement points on the photovoltaic module to obtain temperature data of multiple different temperature measurement points. The multiple temperature sensor components 12 will also transmit the temperature data of multiple different temperature measurement points to the power supply comparison module 11. The power supply comparison module 11 calculates the temperature measurement data of the multiple temperature points to obtain more accurate temperature data of the photovoltaic module, thereby achieving high-precision detection of the temperature of the photovoltaic module, thereby allowing users to take timely measures when the temperature of the photovoltaic module is too high, avoiding damage to the photovoltaic module and extending the life of the photovoltaic module. The temperature sensing assembly 12 is less expensive than a thermal imager, thereby reducing costs. Furthermore, multiple temperature sensing assemblies are distributed on the photovoltaic module, each powered by a wireless connection, eliminating the need for wiring. They can be distributed indefinitely on the photovoltaic module, for example, 100 or 150 temperature sensing assemblies can be distributed on the photovoltaic module, achieving multi-point temperature measurement and thus achieving higher accuracy.
[0042] like Figure 2 As shown, in the embodiment of the present application, the power supply comparison module 11 includes:
[0043] Combiner 111, the combiner 111 is used to send an electromagnetic wave signal according to the temperature measurement instruction;
[0044] Antenna 112 is arranged close to the photovoltaic component. Antenna 112 is connected to combiner 111 and is used to radiate energy into space according to the electromagnetic wave signal. Antenna 112 is also wirelessly connected to temperature sensor component 12 and is used to receive temperature data sent by temperature sensor component 12.
[0045] In this embodiment, the power supply comparison module 11 includes a combiner 111 and an antenna 112. The combiner 111 is connected to the antenna 112. The combiner 111 is generally used at the transmitting end. Its function is to combine two or more radio frequency signals emitted from different transmitters into one radio frequency device sent to the antenna 112 for transmission, while avoiding mutual influence between the signals of each port. That is, it can be connected to the transmitter of multiple radio frequency signals, so as to receive the temperature measurement instruction emitted by the transmitter, and transmit the electromagnetic wave signal to the antenna 112 according to the temperature measurement instruction, so that the antenna 112 radiates energy into the space according to the electromagnetic wave signal, and the antenna 112 is wirelessly connected to the temperature sensing component 12. The operating frequency of the temperature sensing component 12 and the antenna 112 are the same, so that the temperature sensing component 12 can receive the radiation energy transmitted by the antenna 112 and convert the radiation energy into electrical energy to power itself. The temperature sensing component 12 can be used to sense the temperature of the test point to obtain temperature data, and transmit the sensed temperature data to the combiner 111. The combiner 111 is used to calculate multiple temperature data to obtain more accurate temperature data of the photovoltaic component.
[0046] like Figure 2 As shown, in the embodiment of the present application, the power supply comparison module 11 further includes:
[0047] The indicating device 113 is connected to the combiner 111 via a coaxial line to send a temperature measurement instruction to the combiner 111 .
[0048] In this embodiment, the power supply comparison module 11 includes a combiner 111, an antenna 112 and an indication device 113. The indication device 113 is one of the multiple channels connected to the combiner 111 and is used to be connected to the combiner 111 through an RG136 feeder. The RG136 feeder is a coaxial line, so it can be bent multiple times and at large angles without being damaged, which is conducive to the transmission of the indication signal between the indication device 113 and the combiner 111, avoiding signal transmission failures caused by damage to the transmission line, and ensuring that the combiner 111 can receive the temperature measurement indication signal.
[0049] like Figure 2 As shown, in an embodiment of the present application, the antenna 112 includes a first antenna 1121 and a second antenna 1122, and the combiner 111 is connected to the first antenna 1121 and the second antenna 1122 respectively. The first antenna 1121 and the second antenna 1122 respectively receive electromagnetic wave signals to radiate energy into space according to the electromagnetic wave signals, and are used to receive temperature data sent by the temperature sensing component 12.
[0050] In this embodiment, the power supply comparison module 11 includes a combiner 111 and an antenna 112. The combiner 111 is connected to the antenna 112. The antenna 112 includes a first antenna 1121 and a second antenna 1122. The first antenna 1121 and the second antenna 1122 are both connected to the combiner 111, so that the first antenna 1121 and the second antenna 1122 can both receive the electromagnetic wave signal sent by the combiner 111. Therefore, the first antenna 1121 and the second antenna 1122 can radiate energy into space based on the electromagnetic wave signal, thereby increasing the area of radiated energy, thereby increasing the probability that more temperature sensing components 12 on the photovoltaic module will receive the radiated energy, thereby improving the accuracy of the temperature monitoring of the photovoltaic module by multiple temperature sensing components 12. After receiving the radiated energy, the temperature sensing component 12 will convert it into electrical energy to power itself, so as to sense the temperature data of the temperature measurement point, and transmit the temperature data to the combiner 111 via the wireless connection of the first antenna 1121 and the second antenna 1122 for calculation to obtain more accurate temperature data of the photovoltaic module.
[0051] In this embodiment, the antenna 112 may also include a first antenna 1121, a second antenna 1122 and a third antenna 112, or may also include a fourth antenna 112. The number of antennas 112 can be set according to the size of the photovoltaic module, so that the antenna 112 can be wirelessly connected to multiple temperature sensing components 12 provided on the photovoltaic module, thereby realizing power supply for multiple temperature sensing components 12, and multiple temperature sensing components 12 can transmit the sensed temperature data through multiple antennas 112 to the combiner 111 to calculate the accurate temperature of the photovoltaic module.
[0052] In the embodiment of the present application, the first antenna 1121 and the second antenna 1122 are both connected to the combiner 111 via a low-loss radio frequency line.
[0053] In this embodiment, one end of the combiner 111 is connected to the indication device 113 through the RG136 feeder to receive the temperature measurement indication signal, and the other end of the combiner 111 is connected to the first antenna 1121 and the second antenna 1122 through the RG136 low-loss RF line. After receiving the electromagnetic wave signal, the first antenna 1121 and the second antenna 1122 will radiate energy into space under the excitation of the electromagnetic wave signal. The temperature sensing component 12 is wirelessly connected to the first antenna 1121 and the second antenna 1122, and the temperature sensing component 12 has the same operating frequency as the first antenna 1121 and the second antenna 1122, so that the temperature sensing component 12 can receive the radiation energy transmitted by the first antenna 1121 and the second antenna 1122, and convert the radiation energy into electrical energy to power itself, so that the temperature sensing component 12 can sense the temperature of the corresponding temperature measurement point.
[0054] In the embodiment of the present application, the first antenna 1121 and the second antenna 1122 are both adsorbed on the photovoltaic module.
[0055] In this embodiment, the first antenna 1121 and the second antenna 1122 can be adsorbed on the photovoltaic component by a strong magnet, thereby facilitating the arrangement of the first antenna 1121 and the second antenna 1122 close to the photovoltaic component, so that the temperature sensing component 12 on the photovoltaic component can sense the energy radiated into space by the first antenna 1121 and / or the second antenna 1122, thereby enabling the temperature sensing component 12 to be self-powered, so that the temperature sensing component 12 can measure the temperature at the temperature measurement point where it is located.
[0056] like Figure 2 As shown, in the embodiment of the present application, it also includes:
[0057] The ambient temperature detection component 13 is used to detect the ambient temperature and obtain ambient temperature data. The ambient temperature detection component 13 is connected to the combiner 111 to transmit the ambient temperature to the combiner 111 .
[0058] In the embodiment of the present application, the ambient temperature detection component 13 is disposed close to the combiner 111 .
[0059] In this embodiment, a photovoltaic module temperature monitoring system 1 includes multiple temperature sensing assemblies 12, a combiner 111, an antenna 112, an indicator device 113, and an ambient temperature monitoring assembly. The combiner 111 is connected to the antenna 112, the indicator device 113, and the ambient temperature sensing assembly, respectively. The antenna 112 is also wirelessly connected to the temperature sensing assembly 12 mounted on the photovoltaic module. The temperature sensing assembly 12 is used to sense the temperature at the temperature measurement point of the photovoltaic module. The multiple temperature sensing assemblies 12 also transmit multiple temperature data to the combiner 111 via the antenna 112. The combiner 111 uses calculus methods to calculate the multiple temperature data to more accurately obtain the temperature of the photovoltaic module, thereby obtaining accurate temperature data of the photovoltaic module. The ambient temperature monitoring assembly is located near the combiner 111 and is used to sense the ambient temperature and transmit the sensed ambient temperature to the combiner 111. There is a certain relationship between the temperature of the photovoltaic module and the ambient temperature. That is, when the photovoltaic module is not operating, its temperature is consistent with the ambient temperature; when the photovoltaic module is operating, its temperature is higher than the ambient temperature. Over a 24-hour period, the PV module temperature curve first aligns with the ambient temperature curve, then gradually diverges, and finally converges until they align again. The two curves form a closed region. Using calculus, combiner 111 calculates the area between the module temperature curve and the ambient temperature curve during and after the PV module is operating. The area between the two curves during operation can be used to determine whether the PV module is faulty, while the area between the curves after the module is stopped represents the temperature characteristics of the PV module.
[0060] In the embodiment of the present application, the temperature sensing component 12 is a temperature sensor. The ambient temperature detection component 13 can also be a temperature sensor.
[0061] So far, the various embodiments of the present application have been described in detail. To avoid obscuring the concept of the present application, some details well known in the art have not been described. Based on the above description, those skilled in the art can fully understand how to implement the technical solutions disclosed herein.
[0062] Although some specific embodiments of the present application have been described in detail through examples, those skilled in the art will understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the present application. Those skilled in the art will understand that the above embodiments may be modified or some technical features may be replaced by equivalents without departing from the scope and spirit of the present application. In particular, as long as there are no structural conflicts, the various technical features mentioned in the various embodiments may be combined in any manner.
Claims
1. A photovoltaic module temperature monitoring system, characterized in that: include: A power supply comparison module (11), the power supply comparison module (11) being arranged close to the photovoltaic assembly, and the power supply comparison module (11) being used to radiate energy into space according to a temperature measurement instruction; A plurality of temperature sensing components (12) are distributed at a plurality of points to be measured on a photovoltaic component and are wirelessly connected to the power supply comparison module (11) for receiving radiation energy and generating electrical energy based on the radiation energy. Each temperature sensing component (12) is used to sense the temperature of the point to be measured to obtain temperature measurement data, and transmit the sensed temperature data to the power supply comparison module (11).
2. The photovoltaic module temperature monitoring system according to claim 1, characterized in that: The power supply comparison module (11) comprises: A combiner (111), the combiner (111) being used to send an electromagnetic wave signal according to a temperature measurement instruction; An antenna (112) is provided near the photovoltaic assembly, the antenna (112) is connected to the combiner (111), and is used to radiate energy into space according to the electromagnetic wave signal. The antenna (112) is also wirelessly connected to the temperature sensing assembly (12), and is used to receive temperature data sent by the temperature sensing assembly (12).
3. The photovoltaic module temperature monitoring system according to claim 2, characterized in that: The power supply comparison module (11) further includes: An indicating device (113) is connected to the combiner (111) via a coaxial line to send a temperature measurement instruction to the combiner (111).
4. The photovoltaic module temperature monitoring system according to claim 2, characterized in that The antenna (112) comprises a first antenna (1121) and a second antenna (1122); the combiner (111) is connected to the first antenna (1121) and the second antenna (1122), respectively; the first antenna (1121) and the second antenna (1122) respectively receive electromagnetic wave signals to radiate energy into space according to the electromagnetic wave signals, and are used to receive temperature data sent by the temperature sensing component (12).
5. The photovoltaic module temperature monitoring system according to claim 4, characterized in that: The first antenna (1121) and the second antenna (1122) are both connected to the combiner (111) via a low-loss radio frequency line.
6. The photovoltaic module temperature monitoring system according to claim 4, characterized in that: The first antenna (1121) and the second antenna (1122) are both adsorbed on the photovoltaic component.
7. The photovoltaic module temperature monitoring system according to claim 4, characterized in that: The temperature sensing component (12) also transmits the temperature measurement data to the combiner (111) via the first antenna (1121) and / or the second antenna (1122).
8. The photovoltaic module temperature monitoring system according to claim 2, characterized in that: Also includes: An ambient temperature detection component (13) is used to detect the ambient temperature and obtain ambient temperature data, and the ambient temperature detection component (13) is connected to the combiner (111) to transmit the ambient temperature to the combiner (111).
9. The photovoltaic module temperature monitoring system according to claim 8, characterized in that: The ambient temperature detection component (13) is arranged close to the combiner (111).
10. The photovoltaic module temperature monitoring system according to claim 1, characterized in that: The temperature sensing component (12) is a temperature sensor.