Deviation correction detection device and oven apparatus

Abstract

The application relates to a deviation correction detection device and an oven equipment. The device comprises a detection unit arranged on at least one side of a substrate running path, which is used for detecting the deviation of the substrate edge. The detection unit comprises a photoelectric detection assembly and a reflection assembly, and a detection light path is formed between the photoelectric detection assembly and the reflection assembly. An execution unit comprises a position adjustment mechanism, which is in contact with the substrate and is used for driving the lateral movement of the substrate. A control unit is used for controlling the lateral movement of the position adjustment mechanism to correct the deviation of the substrate according to the deviation signal detected by the detection unit. The reflection assembly and the position adjustment mechanism are arranged in a first temperature region, the photoelectric detection assembly and the control unit are arranged in a second temperature region, and the temperature of the first temperature region is higher than that of the second temperature region. The scheme provided by the application can improve the deviation correction control precision of the substrate in a high-temperature environment, thereby improving the tension uniformity of the substrate in the coating and baking process.

Description

Technical Field

[0001] This application relates to the field of new energy equipment technology, and in particular to a correction detection device and an oven equipment. Background Technology

[0002] In the continuous coating process of lithium battery electrodes, the substrate is prone to lateral displacement due to uneven tension when dried at high temperature in an oven. Although some ovens are equipped with correction mechanisms, the built-in correction detection components are prone to signal drift or damage in high-temperature environments, leading to detection failure. Moreover, when the electronic control components are built-in, the machine needs to be shut down for cooling and maintenance, reducing equipment uptime.

[0003] Therefore, the correction mechanism of the relevant technology is unable to meet the real-time correction requirements inside the oven under high temperature conditions, resulting in poor tension uniformity of the substrate during coating and baking, thus affecting the coating quality. Utility Model Content

[0004] To address or partially address the problems existing in the related technologies, this application provides a web-correction detection device and an oven equipment. The web-correction detection device can improve the web-correction control accuracy of the substrate under high-temperature conditions, thereby improving the tension uniformity of the substrate during coating and baking processes.

[0005] The first aspect of this application provides a correction detection device, comprising:

[0006] A detection unit, located on at least one side of the substrate running path, is used to detect the offset of the substrate edge. The detection unit includes a photoelectric detection component and a reflection component, and a detection optical path is formed between the photoelectric detection component and the reflection component. An execution unit includes a position adjustment mechanism, which contacts the substrate and is used to drive the substrate to move laterally.

[0007] The control unit is used to control the position adjustment mechanism to move laterally to correct the offset of the substrate based on the offset signal detected by the detection unit.

[0008] The reflective component and the position adjustment mechanism are located in the first temperature region, while the photoelectric detection component and the control unit are located in the second temperature region. The temperature of the first temperature region is higher than that of the second temperature region.

[0009] In one embodiment, a light-transmitting portion is further included, disposed between the photoelectric detection component and the reflective component, and separating the first temperature region from the second temperature region; wherein the detection optical path passes through the light-transmitting portion.

[0010] In one embodiment, the reflective component includes a planar reflector, which is coaxially aligned with the optical path transmitter / receiver of the photoelectric detection component.

[0011] In one embodiment, the detection unit is provided in two sets, which are respectively located on both sides of the substrate running path;

[0012] The detection optical paths of the two sets of detection units are parallel and the spacing is adjustable.

[0013] In one embodiment, a width adjustment mechanism is further included, comprising a guide rail assembly and a width adjustment drive. The light source transceiver modules of the two sets of detection units are mounted on the guide rail assembly, and the width adjustment drive is used to drive the two sets of light source transceiver modules to move towards or away from each other. The reflective surface coverage of the planar reflector is greater than the maximum adjustable spacing between the two sets of detection units.

[0014] In one embodiment, the device further includes a tension adjustment unit, comprising a tension sensor and a tension actuator;

[0015] The control unit is used to acquire the tension signal from the tension sensor and control the tension actuator to adjust the substrate tension.

[0016] In one embodiment, the position adjustment mechanism includes a correction roller with a diameter greater than 200 mm.

[0017] In one embodiment, the first temperature region and the second temperature region are separated by a heat insulation wall, and the light-transmitting part is a light-transmitting plate, which is fixed to the heat insulation wall and sealed with the heat insulation wall.

[0018] In one embodiment, a cooling component is provided at a position adjacent to the heat dissipation part of the photoelectric detection component. The cooling component is located in the second temperature region and is used to cool the photoelectric detection component.

[0019] A second aspect of this application provides an oven apparatus, comprising:

[0020] The oven body is equipped with the correction and detection device as described in the first aspect above; wherein, the internal chamber of the oven body constitutes a first temperature zone, and the outside of the oven body constitutes a second temperature zone.

[0021] The technical solution provided in this application may include the following beneficial effects:

[0022] The web-correction detection device of this application has the photoelectric detection component and the control unit located in the second temperature zone, which can isolate the high temperature inside the oven, thereby avoiding thermal failure of the electronic components of the photoelectric detection component and the control unit, reducing the failure rate of the photoelectric detection component and the control unit, improving the web-correction control accuracy of the substrate in a high-temperature environment, and thus improving the tension uniformity of the substrate during coating and baking.

[0023] Furthermore, since the correction drive component of this application is located in the second temperature zone outside the housing, it can not only avoid the thermal expansion of the control components caused by the high temperature in the first temperature zone, ensuring stable operation, but also allow operators to carry out maintenance in the second temperature zone without having to come into contact with the high temperature environment in the first temperature zone inside the housing, reducing the risk of burns to operators and making the use safer.

[0024] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0025] The above and other objects, features and advantages of this application will become more apparent from the more detailed description of exemplary embodiments thereof in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments thereof.

[0026] Figure 1 This is a schematic diagram of the structure of a correction detection device shown in one embodiment of this application;

[0027] Figure 2 This is a schematic diagram showing the cooperation between the correction detection device and the housing in an embodiment of this application.

[0028] Reference numerals: 100, correction detection device; 110, detection unit; 111, photoelectric detection component; 112, reflection component; 113, light-transmitting part; 1101, detection optical path; 120, execution unit; 121, correction roller; 122, correction drive component; 130, width adjustment mechanism; 131, guide rail assembly; 132, width adjustment drive component; 140, frame; 141, connecting arm; 150, tension adjustment roller; 160, housing; 161, heat insulation wall. Detailed Implementation

[0029] Preferred embodiments of the present application will now be described in more detail with reference to the accompanying drawings. While preferred embodiments of the present application are shown in the drawings, it should be understood that the present application may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to make the present application more thorough and complete, and to fully convey the scope of the present application to those skilled in the art.

[0030] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The singular forms “a,” “the,” and “the” used in this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0031] It should be understood that although the terms "first," "second," "third," etc., may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this application, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0032] In the description of this application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and 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.

[0033] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," 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. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0034] The correction mechanism of the relevant technology is difficult to solve the real-time correction needs inside the oven under high temperature and ring conditions, resulting in poor tension uniformity of the substrate during coating and baking, thus affecting the coating quality.

[0035] To address the aforementioned issues, this application provides a deviation detection device that can improve the deviation control accuracy of the substrate under high-temperature conditions, thereby enhancing the tension uniformity of the substrate during coating and baking processes.

[0036] The technical solutions of the embodiments of this application are described in detail below with reference to the accompanying drawings.

[0037] Figure 1 This is a schematic diagram of the structure of a correction detection device shown in one embodiment of this application; Figure 2 This is a schematic diagram showing the cooperation between the correction detection device and the housing in an embodiment of this application.

[0038] Please see also Figure 1 and Figure 2This application provides a deviation correction detection device 100, including a detection unit 110, an execution unit 120, and a control unit. The detection unit 110 is disposed on at least one side of the running path of a substrate (not shown) and is used to detect the offset of the substrate edge. In this application, the substrate may be a strip of electrode material. The detection unit 110 includes a photoelectric detection component 111 and a reflection component 112, and a detection optical path 1101 is formed between the photoelectric detection component 111 and the reflection component 112. The execution unit includes a position adjustment mechanism, which contacts the substrate and is used to drive the substrate to move laterally. The control unit is used to control the position adjustment mechanism to move laterally to correct the offset of the substrate according to the offset signal detected by the detection unit. The reflection component and the position adjustment mechanism are disposed in a first temperature region, and the photoelectric detection component and the control unit are disposed in a second temperature region, wherein the temperature of the first temperature region is higher than that of the second temperature region.

[0039] In this application, the correction detection device is used to be installed on the chamber of the oven equipment, the internal cavity of the chamber constitutes the first temperature zone, and the outside of the oven constitutes the second temperature zone.

[0040] The web-correction detection device of this application has the photoelectric detection component and the control unit located in the second temperature zone, which can isolate the high temperature inside the oven, thereby avoiding thermal failure of the electronic components of the photoelectric detection component and the control unit, reducing the failure rate of the photoelectric detection component and the control unit, improving the web-correction control accuracy of the substrate in a high-temperature environment, and thus improving the tension uniformity of the substrate during coating and baking.

[0041] In this embodiment, the position adjustment mechanism includes a correction roller 121, the roller surface of which is used to contact the substrate, and the axis of the correction roller 121 is perpendicular to the running direction of the substrate. The control unit acquires the offset signal of the substrate edge and controls the correction roller 121 to move in a direction parallel to the roller axis based on the offset signal, so as to adjust the offset of the substrate.

[0042] The photoelectric detection component 111 can specifically be an infrared photoelectric sensor, which is an electronic device that performs non-contact detection based on infrared light. It consists of an infrared emitter and an infrared receiver and is used to detect the position, distance, edge, or motion state of an object.

[0043] It is worth noting that the photoelectric detection component of this application is not limited to infrared emitting photoelectric eyes, but can also be a component of various light source types such as laser and visible light, and this application does not limit it.

[0044] In some embodiments, the photoelectric detection component 111 is fixed to a structural member on the outside of the oven body 160 and is fixed relative to the oven body 160. The emitting end of the photoelectric detection component 111 can project an infrared beam into the oven body 160.

[0045] In some embodiments, the reflective component 112 may include a planar reflector, which is vertically mounted and its dimension (width) along the width direction of the substrate is greater than the maximum distance that the two sets of photoelectric detection components 111 can achieve on the guide rail. The reflective surface of the planar reflector corresponds to the emitting end and / or receiving end of the optical path 1101 of the photoelectric detection component 111, ensuring that the reflected optical path 1101 is free of deflection. In some embodiments, the reflective component 112 may also be a prism, a mirror, or other reflective element, which is not limited in this application.

[0046] In some embodiments, the planar reflector can be a metal mirror-polished plate, fixed inside the housing by a bracket. The solution in this application uses a photoelectric detection component 111 and a reflection component 112 to form a closed-loop detection optical path 1101, used to detect positional deviations at the edge of the substrate and generate corresponding offset signals, thereby enabling real-time monitoring and precise adjustment of the substrate position.

[0047] In some embodiments, the alignment roller 121 of the position adjustment mechanism is horizontally disposed inside the housing 160, with its roller shaft perpendicular to the substrate running direction and its roller surface in full contact with the substrate. The control unit includes an alignment drive 122 and an alignment controller, both located outside the housing 160. The alignment controller receives an offset signal sent by the photoelectric detection component 111 via a cable and controls the alignment drive 122 based on this offset signal, thereby driving the alignment roller 121 to move or swing in a direction parallel to the axis of the alignment roller 121 (i.e., laterally) to correct the lateral position of the substrate in real time. The alignment drive 122 can be a servo motor, suitable for rapid response and driving the alignment roller to move to correct the lateral offset of the substrate. The output shaft of the servo motor is connected to the alignment roller 121 inside the housing 160 via a mechanical linkage mechanism (e.g., a reducer, a coupling), controlling the oscillation of the alignment roller 121 to achieve lateral offset of the substrate, thereby ensuring the stability of the lateral position of the substrate in the running path.

[0048] In some embodiments, a light-transmitting portion 113 is further included. The light-transmitting portion 113 is disposed between the photoelectric detection component 111 and the reflective component 112, and separates the first temperature region from the second temperature region. The detection beam emitted from the emitting end of the photoelectric detection component 111 passes through the light-transmitting portion 113 and is aligned with the reflective component 112. The beam reflected by the reflective component 112 then passes back through the light-transmitting portion 113 to reach the receiving end of the photoelectric detection component 111. The light-transmitting portion 113 of this application can separate the photoelectric detection component 111 from the high-temperature environment inside the housing 160, while maintaining the unobstructed transmission of the infrared light path 1101.

[0049] In this application, the first temperature zone inside the chamber and the second temperature zone outside the chamber are separated by the heat insulation wall 161 of the chamber 160. The heat insulation wall 161 can be the chamber wall itself, and the light-transmitting part 113 can be a light-transmitting plate embedded in the heat insulation wall 161. Through holes can be made in the heat insulation wall 161 of the chamber 160, and the light-transmitting plate can be embedded in the through holes. The edge of the light-transmitting plate is sealed and fixed to the heat insulation wall 161 with high-temperature resistant sealant, forming an airtight isolation layer with the heat insulation wall 161. The sealing design allows infrared signals to penetrate while blocking heat, moisture, and dust from entering the photoelectric sensor area inside the oven, thus preventing the temperature rise of the infrared photoelectric sensor area. This not only ensures that the detection accuracy is not affected by temperature, but also facilitates maintenance, reduces maintenance costs, and extends the equipment life.

[0050] In some embodiments, the light-transmitting plate can be infrared high-transmittance glass, which can ensure lossless transmission of infrared signals and improve detection accuracy.

[0051] In some embodiments, a cooling component (not shown) is provided adjacent to the heat dissipation portion of the photoelectric detection component 111. The cooling component is located in the second temperature region and is used to cool the infrared transceiver module. For example, an axial fan (cooling component) and a temperature control module are added to the housing of the infrared photoelectric sensor, with the air duct aligned with the heat dissipation fins. The temperature control module automatically starts and stops the fan when the photoelectric sensor reaches the set temperature.

[0052] In this application, two sets of detection units 110 are provided, located on both sides of the substrate running path. The detection optical paths 1101 of the two sets of detection units 110 are parallel and the spacing is adjustable, which can be adjusted according to the width of different substrates. The spacing between the detection optical paths 1101 of the two sets of detection units 110 is equal to the nominal width of the substrate. Each set includes an independent photoelectric detection component 111 and a reflection component 112. The control mechanism synchronously processes the offset signals from both sides and calculates the overall offset vector of the substrate. Simultaneous detection on both sides can avoid single-point errors, thereby improving the position control accuracy. Moreover, the comparison of the two detection signals can identify substrate torsion and prevent deviation.

[0053] See also Figure 1In some embodiments, the correction detection device 100 of this application further includes a width adjustment mechanism 130, which is used to adjust the spacing between the detection optical paths 1101 of the two sets of detection units 110. Specifically, the width adjustment mechanism 130 includes a guide rail assembly 131 and a width adjustment drive 132. The photoelectric detection components 111 of the two sets of detection units 110 are mounted on the guide rail assembly 131, and the width adjustment drive 132 is used to drive the two sets of photoelectric detection components 111 to move towards or away from each other; wherein, the reflective surface coverage of the planar reflector is greater than the maximum spacing between the two sets of detection units 110.

[0054] In some embodiments, the width adjustment drive 132 can be a forward and reverse motor, and the guide rail assembly 131 includes a parallel bidirectional lead screw guide rail assembly 131. The photoelectric detection components 111 of the two sets of detection units 110 are respectively mounted on the threaded sections on both sides of the bidirectional lead screw. The forward and reverse motor is connected to the input end of the bidirectional lead screw. The forward and reverse drive realizes the movement of the two sets of photoelectric detection components 111 towards or away from each other, and the reverse threads on both sides of the lead screw realize the synchronous and symmetrical movement of the two sets of photoelectric detection components 111, ensuring the accuracy and synchronization of the optical path 1101 spacing adjustment. The guide rail assembly 131 can integrate a displacement sensor to provide real-time feedback on the position information of the photoelectric detection components 111. This application can automatically adjust the optical path 1101 spacing according to the width of the strip, thereby adapting to different width substrates.

[0055] See Figure 2 In some embodiments, the deviation correction detection device 100 further includes a tension adjustment unit, which includes a tension sensor and a tension actuator. The control unit is used to acquire the tension signal from the tension sensor and control the tension actuator to adjust the tension of the substrate. Specifically, the tension actuator can be a tension adjustment roller 150. The tension sensor and the tension adjustment roller 150 are electrically connected to the control unit. The control unit is used to acquire the tension signal from the tension sensor and control the roller speed of the tension adjustment roller 150 based on the tension signal to adjust the tension of the material strip.

[0056] In this application, the tension adjusting roller 150 and the correction roller 121 can be installed side-by-side longitudinally inside the drying oven, with the roller surfaces contacting the substrate surface. A tension detection element can be embedded in the bearing housing of the tension adjusting roller 150 to collect substrate tension data in real time. The belt drive unit receives the tension detection information and dynamically adjusts the roller speed of the tension adjusting roller 150 through an algorithm to maintain a constant tension at a set value. This solution features a closed-loop linkage between correction and tension, which can prevent secondary displacement of the substrate due to uneven tension.

[0057] In some embodiments, the surface of the correction roller 121 is coated with a high-friction coefficient silicone layer, and the tension adjusting roller 150 is made of mirror-finished stainless steel. The two rollers are installed in parallel on the same frame 140, and the substrate passes around the correction roller 121 and the tension adjusting roller 150 in sequence, so that the roller surfaces of both rollers are in contact with the substrate and form a corner contact with the substrate at a set angle. In this embodiment, the diameter of the correction roller 121 is larger than the diameter of the tension adjusting roller 150, for example, the diameter of the correction roller is greater than 200mm, specifically 200-300mm, and the diameter of the tension adjusting roller 150 is 150-200mm.

[0058] The application uses a large-diameter and high-friction-surface correction roller 121, which can increase the contact area between the substrate and the correction roller, making the friction between the two greater, thereby preventing the substrate from slipping during the process and making the correction more accurate.

[0059] In some embodiments, a frame 140 is also included, which is fixed to the housing 160. The frame 140 can be fixed to the top outer wall of the housing 160. The top of the frame can be used to install electronic control components. The housing wall at the top of the frame isolates the electronic control components from the high-temperature environment inside the housing, preventing the components from overheating and causing performance degradation, shortened lifespan, or failure. Two connecting arms 141 extend downward from the top sides of the frame 140, respectively. The correction roller 121 is installed between the two connecting arms 141, and its end is rotatably connected to the corresponding connecting arm 141, thereby improving the installation stability of the correction roller.

[0060] Because the correction drive 122 of this application is located in the second temperature zone outside the housing 160, it avoids thermal expansion of the control components caused by the high temperature in the first temperature zone, ensuring stable operation. Furthermore, during maintenance, operators can perform maintenance in the second temperature zone without contacting the high-temperature environment inside the housing, reducing the risk of burns and improving safety. The detection unit 110, execution unit 120, and control mechanism of this application are detachably mounted on the frame 140 or housing 160. Each component is modularly assembled, allowing for independent disassembly and replacement, facilitating upgrades and maintenance. Moreover, the modular design reduces space occupancy.

[0061] The above describes the web alignment detection device 100 of this application. Correspondingly, this application also provides an oven device. The oven device includes an oven body, wherein the internal chamber of the oven body constitutes the first temperature zone, and the exterior of the oven body constitutes the second temperature zone; the oven body includes a double-layer oven, with the same end of the double-layer oven connected by a folding section, the folding section being equipped with the web alignment detection device 100 as described in any of the above embodiments. Specifically, the folding section of the oven body has an installation port, and the housing 160 of the web alignment detection device 100 is entirely embedded in the installation port, thereby achieving a cooperative connection with the oven body.

[0062] The oven equipment of this application, on the one hand, can more accurately adjust the tension on both sides of the substrate to be consistent through the web-correction detection device 100, preventing wrinkling of the electrode sheet due to inaccurate offset, and ensuring the tension uniformity of the substrate during coating and baking, thereby improving the overall coating quality of the electrode sheet. On the other hand, the photoelectric detection component and the control unit of the web-correction detection device are located in the second temperature zone, which can isolate the high temperature inside the oven, thereby avoiding thermal failure of the electronic components of the photoelectric detection component and the control unit, reducing the failure rate of the photoelectric detection component and the control unit, and improving the web-correction control accuracy of the substrate under high temperature environment, thereby improving the tension uniformity of the substrate during coating and baking.

[0063] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A deviation correction detection device, characterized in that, include: A detection unit is disposed on at least one side of the substrate running path and is used to detect the offset of the substrate edge. The detection unit includes a photoelectric detection component and a reflection component, and a detection optical path is formed between the photoelectric detection component and the reflection component. The execution unit includes a position adjustment mechanism that contacts the substrate and is used to drive the substrate to move laterally. The control unit is used to control the position adjustment mechanism to move laterally to correct the offset of the substrate based on the offset signal detected by the detection unit. The reflective component and the position adjustment mechanism are located in the first temperature region, while the photoelectric detection component and the control unit are located in the second temperature region. The temperature of the first temperature region is higher than that of the second temperature region.

2. The correction detection device according to claim 1, characterized in that: It also includes a light-transmitting portion disposed between the photoelectric detection component and the reflective component, and separating the first temperature region from the second temperature region; wherein the detection optical path passes through the light-transmitting portion.

3. The correction detection device according to claim 1, characterized in that: The reflective component includes a planar reflector, which is coaxially aligned with the optical path transmitter / receiver of the photoelectric detection component.

4. The correction detection device according to claim 3, characterized in that: The detection unit is provided in two sets, which are respectively located on both sides of the running path of the substrate; The detection optical paths of the two sets of detection units are parallel and the spacing is adjustable.

5. The correction detection device according to claim 4, characterized in that: It also includes a width adjustment mechanism, comprising a guide rail assembly and a width adjustment drive. The light source transceiver modules of the two sets of detection units are mounted on the guide rail assembly. The width adjustment drive is used to drive the two sets of light source transceiver modules to move towards or away from each other. The reflective surface coverage of the planar reflector is greater than the maximum adjustable distance between the two sets of detection units.

6. The correction detection device according to claim 1, characterized in that: It also includes a tension adjustment unit, comprising a tension sensor and a tension actuator; The control unit is used to acquire the tension signal from the tension sensor and control the tension actuator to adjust the substrate tension.

7. The correction detection device according to claim 6, characterized in that: The position adjustment mechanism includes a correction roller with a diameter greater than 20 mm.

8. The correction detection device according to claim 2, characterized in that: The first temperature zone and the second temperature zone are separated by a heat insulation wall. The light-transmitting part is a light-transmitting plate, which is fixed to the heat insulation wall and is sealed to the heat insulation wall.

9. The correction detection device according to claim 1, characterized in that: A cooling component is provided at a position adjacent to the heat dissipation part of the photoelectric detection component. The cooling component is located in the second temperature region and is used to cool the photoelectric detection component.

10. A drying oven, characterized in that, include: An oven body, wherein the oven body is provided with a correction detection device as described in any one of claims 1-9; wherein the internal chamber of the oven body constitutes a first temperature zone, and the external part of the oven body constitutes a second temperature zone.

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