Control device and photovoltaic module preparation system
By real-time monitoring and automatic adjustment of the temperature and parameters of the exhaust system, the problem of unstable exhaust system in photovoltaic module manufacturing has been solved, improving equipment temperature stability and product quality, and extending equipment life.
Patent Information
- Application Number
- CN202520527673.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-25
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-03-25
AI Technical Summary
In the current photovoltaic module manufacturing process, fluctuations in the capacity of the exhaust system lead to unstable equipment temperature, affecting the process effect and product quality, and there is a lack of automated adjustment methods.
A temperature detection module and an exhaust detection module are used to monitor the ambient temperature and exhaust parameters in real time. The valve opening is automatically adjusted by the control module to ensure that the temperature and exhaust parameters are within the preset range, thereby achieving real-time control of the valve.
It improves the temperature stability of the preparation equipment, ensures the preparation quality and process effect of photovoltaic modules, extends the service life of equipment, and reduces the diffusion of heat to the external environment.
Smart Images
Figure CN223842354U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of photovoltaic module manufacturing technology, and in particular to control devices and photovoltaic module manufacturing systems. Background Technology
[0002] In the manufacturing process of photovoltaic cells and photovoltaic modules, there are many high-temperature process equipment with process temperatures ranging from 100 degrees to over 1000 degrees. These equipment require external ventilation systems during normal production, including organic exhaust, hot exhaust, acid and alkali exhaust, silane exhaust, etc. The functions of different exhaust types are not the same. Among them, hot exhaust and organic exhaust mainly exhaust the heat generated by the preparation equipment to the outside of the factory through the exhaust system, which plays a role in cooling the equipment and the environment, especially in cooling and controlling the temperature of the equipment.
[0003] The exhaust systems of some photovoltaic module manufacturing equipment indirectly affect the process efficiency during production, impacting the final cell efficiency, module power, and product quality. Specifically, the exhaust system affects the dissipation of heat generated inside the equipment, thus affecting the internal temperature. Process equipment has very high requirements for temperature stability; temperature instability will affect the process efficiency and product stability. Therefore, the size of the exhaust, specifically the negative pressure and wind speed (assuming a fixed exhaust duct size), is a key factor affecting the operational stability of the equipment.
[0004] Currently, the actual impact of the external ventilation system on the capacity of each device is not constant but fluctuates. The current secondary connection method for the exhaust pipes at the device end generally involves connecting a manual valve and a pointer-type pressure gauge to set and monitor the negative pressure. Once set, since the valve opening is manually adjusted, the negative pressure and air velocity of the exhaust connected to the device will also change with the fluctuation of the external ventilation system's capacity, thus affecting the device. Utility Model Content
[0005] Therefore, it is necessary to provide a control device and a photovoltaic module manufacturing system to address the aforementioned technical problems.
[0006] In a first aspect, this application provides a control device, comprising:
[0007] Temperature detection module, used to detect the ambient temperature of the preparation equipment;
[0008] An exhaust detection module is installed inside the exhaust duct and is used to detect the exhaust parameters of the exhaust duct.
[0009] The control module is connected to the temperature detection module and the exhaust detection module respectively, and is used to output an adjustment signal to the valve to adjust the opening degree of the valve when the difference between the ambient temperature and the preset temperature is greater than the preset temperature difference and / or the difference between the exhaust parameter and the target parameter is greater than the preset exhaust difference.
[0010] In one embodiment, the control module includes:
[0011] The first comparison module is connected to the temperature detection module and is used to output a first comparison signal when the difference between the ambient temperature and the preset temperature is greater than the preset temperature difference.
[0012] The second comparison module is connected to the exhaust detection module and is used to output a second comparison signal when the difference between the exhaust parameter and the target parameter is greater than a preset exhaust difference.
[0013] The main control module is connected to the first comparison module and the second comparison module respectively, and is used to output the adjustment signal when the first comparison signal and / or the second comparison signal are received.
[0014] In one embodiment, the main control module includes:
[0015] The first touch unit is connected to the first comparison module and the exhaust detection module, and is used to connect to the valve. The first touch unit outputs a touch signal when triggered by the first comparison signal.
[0016] The second touch unit is connected to the second comparison module and the exhaust detection module, and is used to connect to the valve. The second touch unit outputs the adjustment signal when triggered by the second comparison signal. The adjustment signal is used to perform secondary adjustment of the opening degree of the valve.
[0017] The touch signal is used to initially adjust the opening degree of the valve;
[0018] The exhaust detection module is powered on by the touch signal and detects the exhaust parameters of the exhaust duct.
[0019] In one embodiment, the control module further includes:
[0020] The signal conversion module is connected to the temperature detection module, the exhaust detection module, the first comparison module, the second comparison module, and the main control module, respectively, and is used to connect the valve. The signal conversion module is used to convert the ambient temperature and the exhaust parameters into a first target signal form and then transmit them to the first comparison module and the second comparison module accordingly.
[0021] The signal conversion module is also used to convert the adjustment signal output by the main control module into a second target signal form and then transmit it to the valve.
[0022] In one embodiment, the signal conversion module includes a digital signal conversion unit and / or an analog signal conversion unit.
[0023] In one embodiment, the main control module includes a PID control chip.
[0024] In one embodiment, the number of exhaust ducts and valves is the same, and there are multiple such ducts; the number of exhaust detection modules is the same as the number of exhaust ducts and valves, and they are used to detect the exhaust parameters in each of the exhaust ducts respectively.
[0025] In one embodiment, the exhaust detection module includes at least one of a negative pressure gauge and an anemometer.
[0026] Secondly, this application also provides a photovoltaic module manufacturing system, including an exhaust duct, valves, a manufacturing machine, and a control device as described above; wherein the manufacturing machine is connected to the exhaust duct.
[0027] In one embodiment, the preparation apparatus includes any one of a boron diffusion apparatus, a sintering furnace apparatus, and a photoinjection apparatus.
[0028] The aforementioned control device and photovoltaic module fabrication system use a temperature detection module to monitor the ambient temperature of the fabrication machine in real time, an exhaust detection module to monitor the exhaust parameters of the exhaust duct, and a control module connected to valves to achieve automatic valve control. The control module also verifies the ambient temperature and / or exhaust parameters. If the difference between the ambient temperature and the preset temperature is greater than the preset temperature difference and / or the difference between the exhaust parameters and the target parameters is greater than the preset exhaust difference, an adjustment signal is output to achieve real-time valve control. This ensures that the ambient temperature of the fabrication machine remains within the preset range, improves the temperature stability of the fabrication machine, and thus guarantees the quality of the photovoltaic modules fabricated by the fabrication machine. Attached Figure Description
[0029] To more clearly illustrate the technical solutions in the embodiments of this application or related technologies, the drawings used in the description of the embodiments of this application or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0030] Figure 1 This is one of the schematic block diagrams of the control device in one embodiment of this application;
[0031] Figure 2 This is a schematic block diagram of the control module in one embodiment of this application;
[0032] Figure 3 This is a schematic block diagram of the main control module in one embodiment of this application;
[0033] Figure 4 This is a second schematic block diagram of the control device in one embodiment of this application.
[0034] Explanation of icon numbers:
[0035] 110: Temperature detection module; 120: Exhaust detection module; 130: Control module; 131: First comparison module; 132: Second comparison module; 133: Main control module; 1331: First touch unit; 1332: Second touch unit; 200: Preparation machine; 300: Exhaust duct; 400: Valve. Detailed Implementation
[0036] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.
[0037] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.
[0038] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0039] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0040] The control device in this embodiment can be applied to a photovoltaic module fabrication system to regulate the temperature within the system and ensure the quality of the photovoltaic modules. Exemplarily, the photovoltaic module fabrication system may include a fabrication machine, an exhaust duct connected to the machine, and valves for controlling the exhaust duct. The fabrication machine can be replaced depending on the type of photovoltaic module being fabricated or the specific structure within the module. Exemplarily, the fabrication machine may be a boron diffusion device, a sintering furnace, or a light injection device, etc., but is not limited thereto. It is understood that different fabrication machines have different temperature requirements; therefore, when using the control device in this embodiment, the preset temperature, preset temperature difference, target parameter, and preset exhaust difference can be adaptively adjusted.
[0041] The control device in this embodiment can automatically regulate the valve, thereby automatically adjusting the exhaust capacity of the exhaust duct. The exhaust capacity of the exhaust duct affects the heat dissipation capacity of the entire photovoltaic module fabrication. Therefore, the ambient temperature in the fabrication machine can be stabilized by automatically adjusting the exhaust capacity of the exhaust duct.
[0042] In one embodiment, see Appendix Figure 1 , attached Figure 1 This is a schematic block diagram of a control device according to one embodiment of the present application. The control device in this embodiment includes a temperature detection module 110, an exhaust detection module 120, and a control module 130.
[0043] Temperature detection module 110 is used to detect the ambient temperature of the preparation machine 200. Exhaust detection module 120 is located inside exhaust duct 300 and is used to detect the exhaust parameters of exhaust duct 300. Control module 130 is connected to temperature detection module 110 and exhaust detection module 120 respectively, and is used to output a control signal to valve 400 to adjust the opening degree of valve 400 when the difference between ambient temperature and preset temperature is greater than the preset temperature difference and / or the difference between exhaust parameters and target parameters is greater than the preset exhaust difference.
[0044] The temperature detection module 110 can be any structure capable of temperature detection. For example, it can be a temperature sensor, such as a thermocouple, a thermistor, or a digital temperature sensor. Another example is an integrated temperature sensor module, which may integrate a temperature sensor, signal processing circuitry, and a communication interface. It is not limited to these.
[0045] The exhaust parameters detected by the exhaust detection module 120 reflect the exhaust capacity of the exhaust duct 300. The exhaust parameters correspond to the type of the exhaust detection module 120. For example, the exhaust detection module 120 may include an anemometer, and the exhaust parameter may be the wind speed in the exhaust duct 300. Another example is that the exhaust detection module 120 may be a negative pressure meter, and the exhaust parameter may be the negative pressure value in the exhaust duct 300. These are not the only examples.
[0046] The control module 130 may include a digital trigger circuit and / or a chip capable of outputting a control signal to the valve 400 to adjust the opening degree of the valve 400 when the difference between the ambient temperature and the preset temperature is greater than the preset temperature difference and / or the difference between the exhaust parameter and the target parameter is greater than the preset exhaust difference in the embodiments of this application.
[0047] For example, the control module 130 may include a first comparator and a first trigger. The first comparator may be connected to the temperature detection module 110 and is used to output a first comparison signal when the difference between the ambient temperature and the preset temperature is greater than the preset temperature difference. The first trigger is connected to the first comparator and is used to output an adjustment signal under the trigger of the first comparison signal, thereby adjusting the opening degree of the valve 400.
[0048] In another example, the control module 130 may include a second comparator and a second trigger. The second comparator may be connected to the exhaust detection module 120 and is used to output a second comparison signal when the difference between the exhaust parameter and the target parameter is greater than a preset exhaust difference. The second trigger is connected to the second comparator and is used to output an adjustment signal under the trigger of the second comparison signal, thereby adjusting the opening degree of the valve 400.
[0049] In addition, the control module 130 can also output an opposite level state adjustment signal to the valve 400 to adjust the opening degree of the valve 400 when the difference between the ambient temperature and the preset temperature is less than the preset temperature difference and / or the difference between the exhaust parameter and the target parameter is less than the preset exhaust difference.
[0050] For example, taking the preparation machine 200 as a tubular diffusion furnace, the exhaust parameter is the negative pressure of the exhaust duct 300. The tubular diffusion furnace includes a furnace body cabinet and a cleanroom cabinet. The target parameter in the exhaust duct 300 connected to the furnace body cabinet is 200 Pa, and the target parameter in the exhaust duct 300 connected to the cleanroom cabinet is 100 Pa. If the exhaust detection module 120 detects a negative pressure of 260 Pa in the exhaust duct 300 connected to the furnace body cabinet and a negative pressure of 50 Pa in the exhaust duct 300 connected to the cleanroom cabinet, it can output a negative voltage adjustment signal to the valve 400 in the exhaust duct 300 connected to the furnace body cabinet to reduce the opening of the valve 400. Conversely, it can output a positive voltage adjustment signal to the valve 400 in the exhaust duct 300 connected to the cleanroom cabinet to increase the opening of the valve 400. As can be seen, the control device based on the embodiments of this application can effectively monitor and stabilize the negative pressure of the equipment, reduce the heat accumulation of the equipment below the heat exchanger, extend the service life of the equipment, and reduce the heat diffusion of the equipment to the external environment, thus stabilizing the ambient temperature.
[0051] For example, taking the fabrication machine 200 as a light injection device, the light injection device is typically connected to multiple exhaust ducts 300 to quickly remove excess heat and maintain temperature stability within the furnace chamber. However, in related technologies, limited exhaust capacity of the external power system's fans or aging of manual valves can cause instability in the external exhaust system, indirectly affecting the temperature uniformity within the furnace chamber and potentially leading to alarms and shutdowns. The light injection device needs to maintain a stable negative pressure in the connected exhaust ducts between 100 Pa and 130 Pa, for example, around 115 Pa. The alarm threshold for the light injection device is below 100 Pa and above 130 Pa; exceeding this range will disconnect heating, causing process experiment failure. If the negative pressure in the exhaust duct 300 is too low, the exhaust within the furnace chamber will be excessive. If the temperature within the furnace chamber becomes too high, it will also cause poor temperature uniformity, resulting in an uneven furnace temperature curve and ultimately affecting the process experiment results. Therefore, by using the control device in this application to stabilize the negative pressure of the exhaust duct 300 between 100pa and 130pa, the final process preparation effect of the light injection device can be ensured.
[0052] In this embodiment, the ambient temperature of the fabrication machine 200 is monitored in real time by the temperature detection module 110, and the exhaust parameters of the exhaust duct 300 are monitored by the exhaust detection module 120. The control module 130 is connected to the valve 400 to achieve automatic control of the valve 400. The control module 130 verifies the ambient temperature and / or exhaust parameters. If the difference between the ambient temperature and the preset temperature is greater than the preset temperature difference and / or the difference between the exhaust parameters and the target parameters is greater than the preset exhaust difference, an adjustment signal is output to achieve real-time control of the valve 400. This ensures that the ambient temperature of the fabrication machine 200 is maintained within the preset range, improves the temperature stability of the fabrication machine 200, and thus guarantees the quality of the photovoltaic modules fabricated by the fabrication machine 200.
[0053] In one embodiment, see Appendix Figure 2 , attached Figure 2 A schematic block diagram of the control module 130 in one embodiment of this application is shown. The control module 130 in this embodiment includes a first comparison module 131, a second comparison module 132, and a main control module 133.
[0054] The first comparison module 131 is connected to the temperature detection module 110 and outputs a first comparison signal when the difference between the ambient temperature and the preset temperature is greater than the preset temperature difference. The second comparison module 132 is connected to the exhaust detection module 120 and outputs a second comparison signal when the difference between the exhaust parameter and the target parameter is greater than the preset exhaust difference. The main control module 133 is connected to both the first comparison module 131 and the second comparison module 132 and outputs an adjustment signal upon receiving the first comparison signal and / or the second comparison signal.
[0055] The first comparison module 131 and the second comparison module 132 can be multi-level comparison modules. The first comparison module 131 can compare the ambient temperature with multiple values to determine whether the difference between the ambient temperature and the preset temperature is greater than the preset temperature difference. The second comparison module 132 compares the exhaust parameters with multiple values to determine whether the difference between the exhaust parameters and the target parameters is greater than the preset exhaust difference.
[0056] For example, the main control module 133 may include an OR gate or an AND gate. Taking the main control module 133 including an OR gate as an example, the main control module 133 outputs a target level adjustment signal when it receives either the first comparison signal or the second comparison signal. Taking the main control module 133 including an AND gate as an example, the main control module 133 outputs a target level adjustment signal when it simultaneously receives the first comparison signal and the second comparison signal.
[0057] In this embodiment, the main control module 133 adjusts the valve 400 when the difference between the ambient temperature and the preset temperature is greater than the preset temperature difference and / or when the difference between the exhaust parameters and the target parameters is greater than the preset exhaust difference. This ensures that the ambient temperature in the equipment is stabilized within the target range, guaranteeing the quality of photovoltaic module fabrication in the equipment.
[0058] In one embodiment, see Appendix Figure 3 , attached Figure 3 A schematic block diagram of the main control module 133 in one embodiment of this application is shown. The main control module 133 in this embodiment includes a first touch unit 1331 and a second touch unit 1332.
[0059] The first touch unit 1331 is connected to the first comparison module 131 and the exhaust detection module 120, and is used to connect to the valve 400. The first touch unit 1331 outputs a touch signal when triggered by the first comparison signal. The second touch unit 1332 is connected to the second comparison module 132 and the exhaust detection module 120, and is used to connect to the valve 400. The second touch unit 1332 outputs an adjustment signal when triggered by the second comparison signal. The adjustment signal is used to perform a secondary adjustment of the opening degree of the valve 400. The touch signal is used for the initial adjustment of the valve 400's opening degree. The exhaust detection module 120 is powered on and operates under the action of the touch signal to detect the exhaust parameters of the exhaust duct.
[0060] The voltage of the adjustment signal can be greater than the voltage of the touch signal.
[0061] Valve 400 remains open at a certain degree to ensure that the heat generated by the equipment can be dissipated. When the difference between the ambient temperature and the preset temperature exceeds the preset temperature difference, the first comparison signal triggers the first touch unit 1331, causing it to output a touch signal. This touch signal acts on the exhaust detection module 120 and valve 400, causing the exhaust detection module 120 to begin detecting the exhaust parameters of the exhaust duct, and the opening of valve 400 is adjusted for the first time. If the exhaust parameters of the exhaust duct still do not meet the requirements, the second touch unit 1332 is triggered by the second comparison signal to output an adjustment signal, thereby achieving a secondary adjustment of valve 400. The exhaust detection module 120 does not need to be constantly in operation, reducing energy consumption and ensuring that the ambient temperature of the equipment remains stable.
[0062] In one embodiment, the control module further includes a signal conversion module. The signal conversion module is connected to the temperature detection module, the exhaust detection module, the first comparison module, the second comparison module, and the main control module, respectively, and is used to connect to the valve. The signal conversion module is used to convert the ambient temperature and exhaust parameters into a first target signal form and then transmit them to the first comparison module and the second comparison module accordingly. The signal conversion module is also used to convert the adjustment signal output by the main control module into a second target signal form and then transmit it to the valve.
[0063] The first target signal form and the second target signal form can be the same or different. For example, the first target signal form and the second target signal form can be analog signals or digital signals.
[0064] For example, the signal conversion module may include an input conversion circuit and an output conversion circuit. The input conversion circuit is connected to the temperature detection module, the exhaust detection module, the first comparison module, and the second comparison module, respectively, so as to convert the ambient temperature and exhaust parameters into the form of a first target signal and transmit them to the first comparison module and the second comparison module respectively, so as to ensure that the first comparison module and the second comparison module can accurately compare the ambient temperature and exhaust parameters.
[0065] The output conversion circuit is connected to the main control module and the valve respectively. It is used to convert the regulation signal output by the main control module into a second target signal form and then transmit it to the valve so that the valve can recognize the regulation signal.
[0066] In one embodiment, the first target signal has the same form as the second target signal. The signal conversion module includes a digital signal conversion unit.
[0067] In this embodiment, the signal conversion module can be a digital signal conversion unit, enabling the temperature detection module and the exhaust detection module to be compatible with a main control module of the digital signal processor type.
[0068] In one embodiment, the first target signal has the same form as the second target signal. The signal conversion module includes an analog signal conversion unit.
[0069] In this embodiment, the signal conversion module can be an analog signal conversion unit, enabling the temperature detection module and the exhaust detection module to be compatible with the main control module of the analog signal processor type.
[0070] In one embodiment, the first target signal form and the second target signal form may be different, and the signal conversion module includes a digital signal conversion unit and an analog signal conversion unit.
[0071] For example, the digital signal conversion unit can be connected to the temperature detection module, the exhaust detection module, the first comparison module and the second comparison module respectively, so as to convert the ambient temperature and exhaust parameters into digital signal form and transmit them to the first comparison module and the second comparison module respectively, so as to ensure that the first comparison module and the second comparison module can accurately compare the ambient temperature and exhaust parameters.
[0072] The analog signal conversion unit can be connected to the main control module and the valve respectively. It is used to convert the regulation signal output by the main control module into an analog signal and then transmit it to the valve so that the valve can recognize the regulation signal.
[0073] In another example, the analog signal conversion unit can be connected to the temperature detection module, the exhaust detection module, the first comparison module, and the second comparison module respectively, so as to convert the ambient temperature and exhaust parameters into analog signal forms and transmit them to the first comparison module and the second comparison module respectively, so as to ensure that the first comparison module and the second comparison module can accurately compare the ambient temperature and exhaust parameters.
[0074] The digital signal conversion unit can be connected to the main control module and the valve respectively. It is used to convert the regulation signal output by the main control module into a digital signal and then transmit it to the valve so that the valve can recognize the regulation signal.
[0075] In one embodiment, the main control module includes a PID (Proportional-Integral-Derivative) control chip.
[0076] For example, the control logic of a PID (Proportional-Integral-Derivative) control chip can be... Where u(k) is the output of the PID control chip, e(k) is the system deviation (the difference between the ambient temperature and the preset temperature, and the difference between the exhaust parameters and the target parameters), and Kp, Ki, and Kd are the proportional, integral, and derivative coefficients. For example, Kp can be 6, Ki can be 0.12, and Kd can be 2, but it is not limited to these.
[0077] In this embodiment, the PID control chip can be used to quickly adjust the exhaust parameters and ambient temperature, thereby improving the stability of the ambient temperature of the preparation equipment.
[0078] In one embodiment, see Appendix Figure 4 , attached Figure 4The second schematic block diagram of the control device in one embodiment of this application is shown. The number of exhaust ducts 300 and valves 400 is the same, and there are multiple of them; the number of exhaust detection modules 120 is the same as the number of exhaust ducts 300 and valves 400, and they are used to detect the exhaust parameters in each exhaust duct 300 respectively.
[0079] In this embodiment, the number of exhaust detection modules 120 is the same as the number of exhaust ducts 300 and valves 400, which enables independent synchronous control of multiple valves 400 and improves control efficiency.
[0080] In one embodiment, the exhaust detection module includes at least one of a negative pressure gauge and an anemometer.
[0081] For example, the exhaust detection module may include a negative pressure gauge and an anemometer, and the exhaust parameters may include the wind speed and negative pressure value of the exhaust duct. The second comparison module may include a first comparison unit, a second comparison unit, and a logic gate unit. The first comparison unit and the second comparison unit are used to judge the wind speed and negative pressure value respectively. If the difference between the wind speed and the target wind speed is greater than a preset wind speed difference and / or the difference between the negative pressure value and the target negative pressure value is greater than a preset negative pressure difference, the logic gate unit outputs a second comparison signal to ensure accurate detection of the exhaust parameters in the exhaust duct.
[0082] In one embodiment, this application also provides a photovoltaic module fabrication system. The photovoltaic module fabrication system in this embodiment includes an exhaust duct, valves, a fabrication machine, and a control device as described in any of the above embodiments; wherein the fabrication machine is connected to the exhaust duct.
[0083] In this embodiment, a temperature detection module monitors the ambient temperature of the fabrication machine in real time, an exhaust detection module monitors the exhaust parameters of the exhaust duct, and a control module is connected to a valve to achieve automatic valve control. The control module verifies the ambient temperature and / or exhaust parameters. If the difference between the ambient temperature and the preset temperature is greater than the preset temperature difference and / or the difference between the exhaust parameters and the target parameters is greater than the preset exhaust difference, an adjustment signal is output to achieve real-time valve control. This ensures that the ambient temperature of the fabrication machine remains within the preset range, improves the temperature stability of the fabrication machine, and thus guarantees the quality of the photovoltaic modules fabricated by the fabrication machine.
[0084] In one embodiment, the preparation apparatus includes any one of a boron diffusion apparatus, a sintering furnace apparatus, and a photoinjection apparatus.
[0085] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0086] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. Therefore, the scope of protection of this patent application should be determined by the appended claims.
Claims
1. A control device, characterized in that, include: Temperature detection module, used to detect the ambient temperature of the preparation equipment; An exhaust detection module is installed inside the exhaust duct and is used to detect the exhaust parameters of the exhaust duct. The control module is connected to the temperature detection module and the exhaust detection module respectively, and is used to output an adjustment signal to the valve to adjust the opening degree of the valve when the difference between the ambient temperature and the preset temperature is greater than the preset temperature difference and / or the difference between the exhaust parameter and the target parameter is greater than the preset exhaust difference.
2. The control device according to claim 1, characterized in that, The control module includes: The first comparison module is connected to the temperature detection module and is used to output a first comparison signal when the difference between the ambient temperature and the preset temperature is greater than the preset temperature difference. The second comparison module is connected to the exhaust detection module and is used to output a second comparison signal when the difference between the exhaust parameter and the target parameter is greater than a preset exhaust difference. The main control module is connected to the first comparison module and the second comparison module respectively, and is used to output the adjustment signal when the first comparison signal and / or the second comparison signal are received.
3. The control device according to claim 2, characterized in that, The main control module includes: The first touch unit is connected to the first comparison module and the exhaust detection module, and is used to connect to the valve. The first touch unit outputs a touch signal when triggered by the first comparison signal. The second touch unit is connected to the second comparison module and the exhaust detection module, and is used to connect to the valve. The second touch unit outputs the adjustment signal when triggered by the second comparison signal. The adjustment signal is used to perform secondary adjustment of the opening degree of the valve. The touch signal is used to initially adjust the opening degree of the valve; The exhaust detection module is powered on by the touch signal and detects the exhaust parameters of the exhaust duct.
4. The control device according to claim 2, characterized in that, The control module also includes: The signal conversion module is connected to the temperature detection module, the exhaust detection module, the first comparison module, the second comparison module, and the main control module, respectively, and is used to connect the valve. The signal conversion module is used to convert the ambient temperature and the exhaust parameters into a first target signal form and then transmit them to the first comparison module and the second comparison module accordingly. The signal conversion module is also used to convert the adjustment signal output by the main control module into a second target signal form and then transmit it to the valve.
5. The control device according to claim 4, characterized in that, The signal conversion module includes a digital signal conversion unit and / or an analog signal conversion unit.
6. The control device according to claim 2, characterized in that, The main control module includes a PID control chip.
7. The control device according to claim 1, characterized in that, The number of exhaust ducts and valves is the same, and there are multiple such ducts; the number of exhaust detection modules is the same as the number of exhaust ducts and valves, and they are used to detect the exhaust parameters in each exhaust duct.
8. The control device according to claim 1 or 7, characterized in that, The exhaust detection module includes at least one of a negative pressure gauge and an anemometer.
9. A photovoltaic module manufacturing system, characterized in that, It includes an exhaust duct, valves, a preparation machine, and a control device as described in any one of claims 1 to 8; wherein the preparation machine is connected to the exhaust duct.
10. The photovoltaic module manufacturing system according to claim 9, characterized in that, The preparation equipment includes any one of boron diffusion equipment, sintering furnace equipment, and photoinjection equipment.