Enclosed bus detection device

Abstract

The invention discloses a closed bus detection device. Relates to the field of bus detection. An existing bus detection device is often seriously influenced by an external environment in practical application, and then adverse effects are generated on the detection reliability. The closed bus detection device comprises a box body, and further comprises a bus fixing mechanism, an illumination mechanism, a temperature control mechanism and a humidity control mechanism, and the illumination mechanism, the temperature control mechanism and the humidity control mechanism are installed in the box body and connected with the inner wall of the box body; a wiring port is formed in the side wall of the box body, a plurality of fan-shaped elastic sealing blocks are arranged on the inner wall of the wiring port, and the elastic sealing blocks form a circular sealing disc in a non-stress state; the side wall of the box body is provided with two operation openings for hands to pass through, operation gloves are arranged at the operation openings, the inlets of the operation gloves seal the operation openings, the outer walls of the operation gloves are sequentially coated with heat insulation coatings and wear-resistant coatings, and the wear-resistant coatings are in direct contact with a bus. The method is applied to the field of closed bus detection.

Description

Technical Field

[0001] This invention relates to the field of busbar testing, and more specifically to a closed busbar testing device. Background Technology

[0002] As a crucial component of the power system, the busbar undertakes the critical task of power transmission and distribution. Its operational stability and reliability directly affect the safe and efficient operation of the entire power system. In practical applications, busbars may experience potential faults such as overheating, insulation aging, and loose connections due to long-term operation, environmental factors, load changes, and other reasons. If these potential faults are not detected and addressed in a timely manner, they could potentially lead to serious power accidents, causing significant losses such as equipment damage, power outages, and even casualties. Therefore, regular and accurate inspection of busbars to promptly understand their operational status and detect potential faults in advance is of paramount importance for ensuring the safe and stable operation of the power system. Busbar inspection encompasses multiple aspects, including electrical performance testing, mechanical performance testing, and environmental adaptability testing, aiming to comprehensively assess the health status of the busbar.

[0003] To achieve efficient and accurate busbar detection, various busbar detection devices have emerged. These devices integrate advanced sensor technology, signal processing technology, and data analysis technology, enabling real-time monitoring and acquisition of multiple busbar parameters. For example, there is an existing busbar detection device with application number CN202120586053.1.

[0004] However, existing busbar testing devices are often severely affected by the external environment in practical applications, which adversely affects the reliability of the testing. Taking the testing of the high temperature and high humidity resistance of busbars as an example, the high temperature and high humidity testing environment is easily affected by the external environment, thus requiring more energy to maintain the testing environment. Summary of the Invention

[0005] In order to address the problem that existing busbar detection devices are often severely affected by the external environment in practical applications, which adversely affects the reliability of detection, this invention provides a closed busbar detection device.

[0006] The technical solution of this invention is:

[0007] A closed busbar detection device comprises a housing, and the closed busbar detection device further comprises a busbar fixing mechanism, a lighting mechanism, a temperature control mechanism, and a humidity control mechanism. The lighting mechanism, temperature control mechanism, and humidity control mechanism are respectively installed inside the housing and connected to the inner wall of the housing.

[0008] The side wall of the box is provided with a wiring port, and the inner wall of the wiring port is provided with multiple fan-shaped elastic sealing blocks. When the elastic sealing blocks are not under force, they form a circular sealing disc.

[0009] The side wall of the enclosure is provided with two operating ports for human hand passage. Operating gloves are provided at the operating ports, and the entrance of the operating gloves closes the operating ports. The outer wall of the operating gloves is coated with a heat insulation coating and a wear-resistant coating in sequence. The wear-resistant coating is in direct contact with the busbar, and an observation window is provided above the operating port on the lower side wall of the enclosure.

[0010] Furthermore, the busbar fixing mechanism includes multiple vertical lifting components, a corresponding number of clamping components, and a control unit;

[0011] The top movable part of the lifting component is provided with a clamping component for clamping the busbar. The lifting component is a lifting electric cylinder, and the clamping component is a robot gripper. The lifting component drives the clamping component to lift and lower. The lifting component adjusts the clamping component to a suitable position by setting the lifting parameters through the control unit.

[0012] Furthermore, the lighting mechanism includes multiple LED light strips, which form a rectangular lighting ring, and the lighting ring is fixedly installed on the outer edge of the inner wall of the observation window.

[0013] Furthermore, the temperature control mechanism includes a heating plate fixed to the inner wall of the chamber, a temperature sensor, and a control unit. The temperature sensor controls the opening and closing of the heating plate through the control unit and according to a preset temperature range.

[0014] Furthermore, when the temperature inside the chamber is lower than the lower limit of the preset range, the control unit activates the heating plate, which heats up the chamber and raises the temperature inside; when the temperature reaches the upper limit of the preset range, the control unit shuts off the heating plate and stops heating.

[0015] Furthermore, the humidity control mechanism includes a humidifier, a humidity sensor, and a control unit;

[0016] The humidity sensor controls the humidifier's on / off state via the control unit and according to a preset humidity range.

[0017] Furthermore, the humidity sensor detects the humidity inside the chamber in real time and transmits the humidity signal to the control unit;

[0018] The control unit controls the humidifier according to a preset humidity range. When the humidity inside the chamber is lower than the lower limit of the preset range, the control unit turns on the humidifier and the humidifier releases water vapor into the chamber.

[0019] Furthermore, the housing also includes a mounting bracket and an air blower;

[0020] The mounting bracket and the air blower are installed inside the enclosure and are fixedly connected. The air blower faces the busbar fixing mechanism, which promotes the air circulation inside the enclosure.

[0021] Furthermore, when the heating plate of the temperature control mechanism heats the air inside the box, if the air does not circulate, the heated air will concentrate near the heating plate, resulting in temperature differences in different parts of the box. The airflow generated by the blower will quickly carry the heat generated by the heating plate to other areas of the box.

[0022] Furthermore, the elastic sealing block automatically assembles into a circular sealing disc based on its own elasticity, completely sealing the wiring port.

[0023] Compared with the prior art, the present invention has the following advantages:

[0024] This invention creates a well-sealed environment through various design features, effectively reducing interference from the external environment for busbar testing. The enclosure itself constitutes a closed space, and multiple fan-shaped elastic sealing blocks on the inner wall of the side connection ports form a circular sealing disc when not under stress, preventing external dust, moisture, and other contaminants from entering the enclosure through the connection ports. Operating gloves are provided at the operating port, with the glove inlet sealed to further ensure the enclosure's airtightness and prevent the introduction of external impurities by hand. These designs work together to provide a relatively independent and stable internal environment for busbar testing, reducing the impact of external environmental factors on test results and busbar performance.

[0025] The busbar fixing mechanism of this invention employs multiple vertical lifting cylinders, with robotic grippers mounted on the movable parts of these cylinders for holding the busbar. This design allows for precise adjustment of the busbar's position and height, facilitating comprehensive and detailed inspection. Simultaneously, the robotic gripper's gripping method is stable and reliable, ensuring the busbar does not move arbitrarily during inspection, thus improving accuracy. The outer wall of the operator's glove is sequentially coated with a heat-insulating coating and a wear-resistant coating, with the wear-resistant coating directly contacting the busbar. The heat-insulating coating prevents the operator's hand temperature from affecting the busbar, while the wear-resistant coating reduces wear on the busbar during operation, ensuring safety during inspection and protecting the busbar.

[0026] The lighting mechanism of this invention includes a rectangular lighting ring composed of multiple LED light strips, which is fixedly installed on the outer edge of the inner wall of the observation window. This lighting design provides sufficient and uniform light to the observation window, allowing operators to clearly observe the status and testing conditions of the busbars inside the enclosure, facilitating timely problem detection and operational adjustments.

[0027] The temperature control mechanism of this invention consists of a heating plate fixed to the inner wall of the chamber and a temperature sensor. The temperature sensor controls the opening and closing of the heating plate according to a preset temperature range via a control unit. The humidity control mechanism includes a humidifier and a humidity sensor. The humidity sensor controls the opening and closing of the humidifier according to a preset humidity range via a control unit. These two mechanisms can precisely control the temperature and humidity inside the chamber. An air blower, fixedly connected to the busbar fixing mechanism via a mounting bracket inside the chamber, primarily promotes air circulation. In the relatively enclosed space of the chamber, uneven temperature and humidity distribution may occur after heating by the heating plate or humidifying by the humidifier. The air blower agitates the air inside the chamber, allowing heat and moisture to diffuse more evenly throughout the chamber, resulting in a more consistent temperature and humidity environment for the busbar. This further improves the stability and accuracy of the testing environment, ensuring the reliability of the test results and the precision of the busbar performance evaluation.

[0028] In addition to promoting air circulation to optimize the temperature and humidity environment, the airflow generated by the blower during operation can also blow away dust and impurities attached to the surface of the busbar to a certain extent, keeping the surface of the busbar clean and avoiding interference from dust and other factors with the test results, thereby further improving the accuracy of the test. Attached Figure Description

[0029] Figure 1 This is a perspective sectional view of the first embodiment of the present invention.

[0030] Figure 2 This is a three-dimensional structural diagram of the first embodiment of the present invention.

[0031] Figure 3 This is a perspective sectional view of the second embodiment of the present invention.

[0032] Figure 4 This is a schematic diagram of the structure of the housing of the present invention;

[0033] Figure 5 This is a schematic diagram of the structure of the operating gloves of the present invention;

[0034] Figure 6 This is a schematic diagram of the busbar fixing mechanism of the present invention;

[0035] In the diagram: 1. Box body; 2. Elastic sealing block; 3. Operating gloves; 401. Lifting assembly; 402. Clamping assembly; 5. Light strip; 601. Heating plate; 602. Temperature sensor; 603. Control unit; 701. Humidifier; 702. Humidity sensor; 801. Mounting bracket; 802. Air blower. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Specific implementation method one:

[0038] Combination Figure 1 and Figure 2 This embodiment describes a closed busbar detection device, which includes a housing (1). The closed busbar detection device also includes a busbar fixing mechanism, a lighting mechanism, a temperature control mechanism, and a humidity control mechanism. The lighting mechanism, temperature control mechanism, and humidity control mechanism are respectively installed inside the housing (1) and connected to the inner wall of the housing (1).

[0039] The box (1) has a wiring port on its side wall, and the inner wall of the wiring port is provided with a number of fan-shaped elastic sealing blocks (2). When the elastic sealing blocks (2) are not under force, they form a circular sealing disc.

[0040] The side wall of the box (1) is provided with two operation ports for human hands to pass through. An operation glove (3) is provided at the operation port. The entrance of the operation glove (3) closes the operation port. The outer wall of the operation glove (3) is coated with a heat insulation coating and a wear-resistant coating in sequence. The wear-resistant coating is in direct contact with the busbar. An observation window is provided above the operation port on the lower side wall of the box (1).

[0041] When the elastic sealing blocks 2 are not under force, they form a circular sealing disc; the side wall of the box body 1 is provided with two operating ports for human hands to pass through, and operating gloves 3 are provided at the operating ports. The entrance of the operating gloves 3 seals the operating ports. The outer wall of the operating gloves 3 is coated with a heat insulation coating and a wear-resistant coating in sequence. The wear-resistant coating is in direct contact with the busbar. An observation window is provided above the operating port on the lower side wall of the box body 1.

[0042] like Figures 1 to 2 As shown, multiple fan-shaped elastic sealing blocks 2 are installed on the inner wall of the wiring port on the side wall of the enclosure 1, utilizing the properties of elastic materials. When not under stress, these elastic sealing blocks 2 automatically combine to form a circular sealing disc, completely sealing the wiring port and effectively preventing dust, moisture, and other impurities from the outside air from entering the enclosure 1, maintaining a relatively clean and independent internal environment. When a busbar needs to be connected, the busbar insertion process compresses the elastic sealing blocks 2, causing them to separate and form a channel. After the busbar is connected, the elastic sealing blocks 2 spring back and re-close, ensuring that the enclosure 1's airtightness is not affected. An operating glove 3 is installed at the operating port, its inlet tightly sealing the operating port.

[0043] When the operator places their hand inside the operating glove 3, the glove 3 physically isolates itself from the interior of the chamber 1, preventing external air and impurities from entering the chamber 1 through the operating opening. This further ensures the airtightness of the chamber 1 and prevents external factors from interfering with the internal testing environment and the busbar. The outer wall of the operating glove 3 is coated with a heat-insulating coating and a wear-resistant coating, with the wear-resistant coating directly contacting the busbar. The heat-insulating coating has excellent heat insulation properties, effectively blocking the transfer of temperature between the operator's hand and the internal environment. During testing, this prevents hand temperature from affecting the busbar temperature, thus ensuring the stability of the busbar's temperature environment during testing and guaranteeing the accuracy of the test results. The wear-resistant coating enhances the wear resistance of the operating glove 3, reducing friction and wear between the glove and the busbar when the operator operates the busbar through the glove 3. This protects the busbar surface from damage, extends the service life of the operating glove 3, and reduces testing costs.

[0044] The observation window located above the operating port on the lower side wall of enclosure 1 provides operators with a direct view of the interior of the enclosure. The observation window is typically made of transparent materials, such as glass or plexiglass, offering excellent light transmission and clarity. Operators can directly observe the appearance of the busbars, their connection status, and the operation of the testing equipment through the observation window without opening enclosure 1. This avoids disrupting the enclosed environment and introducing external interference, thus improving testing efficiency and safety.

[0045] like Figure 1 As shown, the busbar fixing mechanism includes multiple vertical lifting components 401, and a clamping component 402 for gripping the busbar is provided on the movable part of the lifting cylinder. The lifting component 401 is a lifting cylinder, and the clamping component 402 is a robotic gripper. The busbar fixing mechanism consists of multiple vertical lifting cylinders and a robotic gripper provided on the movable part of the lifting cylinder. The lifting cylinder can precisely control the lifting height of its movable part. By setting appropriate lifting parameters through the control unit 603, the robotic gripper can be adjusted to a suitable position to accurately grasp and fix the busbar. The robotic gripper has a flexible opening and closing function, which can adaptively adjust according to the shape and size of the busbar, firmly gripping the busbar and preventing the busbar from shaking, shifting, or loosening during the inspection process, ensuring that the busbar is always in a stable state, and providing a guarantee for the accurate detection of various parameters of the busbar.

[0046] like Figure 1As shown, the lighting mechanism consists of a rectangular lighting ring composed of multiple LED light strips 5, which is fixedly installed on the outer edge of the inner wall of the observation window. When powered on, the LED light strips 5 emit light, uniformly illuminating the interior of the enclosure 1, particularly the area where the busbars are located and the visible area through the observation window. The lighting ring composed of multiple LED light strips 5 provides ample, bright, and shadow-free light, allowing operators to clearly observe the appearance changes of the busbars, their connection status, and the operating status of the testing equipment through the observation window, facilitating timely detection of abnormalities and the implementation of appropriate measures.

[0047] like Figure 1 As shown, the temperature control mechanism includes a heating plate 601 fixed to the inner wall of the enclosure 1 and a temperature sensor 602. The temperature sensor 602 monitors the temperature inside the enclosure 1 in real time and transmits the temperature signal to the control unit 603. The control unit 603 precisely controls the heating plate 601 according to a preset temperature range. When the temperature inside the enclosure 1 is lower than the lower limit of the preset range, the control unit 603 activates the heating plate 601, which heats up the enclosure and raises the temperature. When the temperature reaches the upper limit of the preset range, the control unit 603 deactivates the heating plate 601 and stops heating. This automatic adjustment method ensures that the temperature inside the enclosure 1 is always maintained within a suitable range for busbar testing, avoiding adverse effects on busbar performance and test results from excessively high or low temperatures.

[0048] like Figure 1 As shown, the humidity control mechanism consists of a humidifier 701 and a humidity sensor 702. The humidity sensor 702 detects the humidity inside the chamber 1 in real time and transmits the humidity signal to the control unit 603. The control unit 603 controls the humidifier 701 according to a preset humidity range. When the humidity inside the chamber is lower than the lower limit of the preset range, the control unit 603 turns on the humidifier 701, which releases water vapor into the chamber to increase the humidity; when the humidity reaches the upper limit of the preset range, the control unit 603 turns off the humidifier 701 and stops humidification. This ensures that the humidity inside the chamber 1 meets the requirements for busbar detection, preventing problems such as busbar rusting and short circuits due to excessive humidity, or static electricity caused by insufficient humidity. Specific Implementation Method Two:

[0050] Combination Figure 3This embodiment describes a closed busbar detection device. An air blower 802 is fixedly connected to a housing 1 via a mounting bracket 801, with the air blower 802 facing the busbar fixing mechanism. Within the housing 1, due to the presence of various components and the relatively enclosed structure of the housing 1, air tends to remain relatively still, forming localized areas of poor air circulation. When the air blower 802 is activated, it generates an airflow with a certain velocity and direction. This airflow breaks the original static state of the air inside the housing 1, where the air blower 802 is fixed to the housing 1 via the mounting bracket 801 and faces the busbar fixing mechanism, promoting air circulation within the housing 1. This air circulation allows for thorough mixing of air in different areas within the housing, preventing uneven temperature and humidity caused by localized air stagnation, and providing a relatively uniform detection environment for the busbar.

[0051] When the temperature control mechanism (such as heating plate 601) heats the air inside the chamber, if the air is not circulated, the heated air will concentrate near the heating plate 601, resulting in significant temperature differences at different locations inside the chamber. The airflow generated by the blower 802 can quickly carry the heat generated by the heating plate 601 to other areas of the chamber 1, making the heat evenly distributed, accelerating the temperature equalization process inside the chamber, improving the efficiency and accuracy of the temperature control mechanism in controlling the temperature inside the chamber, and ensuring that the temperature of the environment where the busbar is located meets the testing requirements.

[0052] Similarly, when the humidity control mechanism (such as humidifier 701) is working, the blower 802 can make the water vapor generated by humidifier 701 diffuse more quickly to all corners of the chamber 1, avoiding local accumulation of water vapor and ensuring the uniformity of humidity inside the chamber. This allows the busbar to be in a relatively consistent humidity environment throughout the entire testing process, improving the accuracy and reliability of the test results.

[0053] During the transportation, storage, and installation of busbars, dust, impurities, and other minute particles may adhere to their surface. If these impurities remain on the busbar surface, they may affect the busbar's conductivity, thereby interfering with the test results. The air blower 802 blows air towards the busbar fixing mechanism, generating a high-speed airflow that sweeps away dust and impurities adhering to the busbar surface, keeping the busbar surface clean, reducing interference from impurities in the test, and ensuring that the test accurately reflects the busbar's performance parameters. Specific implementation method three:

[0055] Combination Figure 1 — Figure 6This embodiment illustrates a closed busbar inspection device. The busbar fixing mechanism employs multiple vertical lifting cylinders, with robotic grippers mounted on the moving parts of these cylinders to hold the busbar. This design allows for precise adjustment of the busbar's position and height, facilitating comprehensive and detailed inspection. The robotic gripper's holding method is stable and reliable, ensuring the busbar does not move during inspection and improving accuracy. The outer wall of the operator's glove is coated with a heat-insulating coating and a wear-resistant coating, with the wear-resistant coating directly contacting the busbar. The heat-insulating coating prevents the operator's hand temperature from affecting the busbar, while the wear-resistant coating reduces wear on the busbar during operation, ensuring safety during inspection and protecting the busbar.

[0056] The lighting mechanism consists of a rectangular lighting ring composed of multiple LED light strips, which is fixedly installed on the outer edge of the inner wall of the observation window. This lighting design provides sufficient and uniform light to the observation window, allowing operators to clearly observe the status and testing conditions of the busbars inside the enclosure, facilitating timely problem detection and operational adjustments.

[0057] The temperature control mechanism consists of a heating plate fixed to the inner wall of the enclosure and a temperature sensor. The temperature sensor controls the heating plate's opening and closing according to a preset temperature range via a control unit. The humidity control mechanism includes a humidifier and a humidity sensor. The humidity sensor controls the humidifier's opening and closing according to a preset humidity range via a control unit. These two mechanisms can precisely control the temperature and humidity inside the enclosure. An air blower, fixedly connected to the busbar fixing mechanism via a mounting bracket, primarily promotes air circulation. In the relatively enclosed space of the enclosure, uneven temperature and humidity distribution may occur after heating by the heating plate or humidifying by the humidifier. The air blower agitates the air inside the enclosure, allowing heat and moisture to spread more evenly throughout the enclosure, resulting in a more consistent temperature and humidity environment for the busbar. This further improves the stability and accuracy of the testing environment, ensuring the reliability of the test results and the precision of the busbar performance evaluation.

[0058] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent substitutions, and improvements made to the above embodiments without departing from the scope of the present invention, based on the technical essence of the present invention and within the spirit and principles of the present invention, shall still fall within the protection scope of the present invention.

Claims

1. A closed busbar detection device, comprising a housing (1), characterized in that: The enclosed busbar detection device also includes a busbar fixing mechanism, a lighting mechanism, a temperature control mechanism, and a humidity control mechanism. The lighting mechanism, temperature control mechanism, and humidity control mechanism are respectively installed inside the enclosure (1) and connected to the inner wall of the enclosure (1). The box (1) has a wiring port on its side wall, and the inner wall of the wiring port is provided with a number of fan-shaped elastic sealing blocks (2). When the elastic sealing blocks (2) are not under force, they form a circular sealing disc. The side wall of the box (1) is provided with two operation ports for human hands to pass through. An operation glove (3) is provided at the operation port. The entrance of the operation glove (3) closes the operation port. The outer wall of the operation glove (3) is coated with a heat insulation coating and a wear-resistant coating in sequence. The wear-resistant coating is in direct contact with the busbar. An observation window is provided above the operation port on the lower side wall of the box (1).

2. The enclosed busbar detection device according to claim 1, characterized in that: The busbar fixing mechanism includes multiple vertical lifting components (401), a corresponding number of clamping components (402), and a control unit (603). The top movable part of the lifting component (401) is provided with a clamping component (402) for clamping the busbar. The lifting component (401) is a lifting electric cylinder, and the clamping component (402) is a robot gripper. The lifting component (401) drives the clamping component (402) to lift. The lifting component (401) sets the lifting parameters through the control unit (603) and adjusts the clamping component (402) to a suitable position.

3. The enclosed busbar detection device according to claim 1, characterized in that: The lighting mechanism includes multiple LED light strips (5), which form a rectangular lighting ring, and the lighting ring is fixedly installed on the outer edge of the inner wall of the observation window.

4. The enclosed busbar detection device according to claim 1, characterized in that: The temperature control mechanism includes a heating plate (601) fixed to the inner wall of the box (1), a temperature sensor (602) and a control unit (603). The temperature sensor (602) controls the opening and closing of the heating plate (601) through the control unit (603) and according to the preset temperature range.

5. The enclosed busbar detection device according to claim 4, characterized in that: When the temperature inside the chamber (1) is lower than the lower limit of the preset range, the control unit (603) starts the heating plate (601), and the heating plate (601) heats up to raise the temperature inside the chamber (1); when the temperature reaches the upper limit of the preset range, the control unit (603) turns off the heating plate (601) and stops heating.

6. The enclosed busbar detection device according to claim 1, characterized in that: The humidity control mechanism includes a humidifier (701), a humidity sensor (702), and a control unit (603). The humidity sensor (702) controls the humidifier (701) to turn on and off through the control unit (603) and according to the preset humidity range.

7. The enclosed busbar detection device according to claim 6, characterized in that: The humidity sensor (702) detects the humidity inside the cabinet (1) in real time and transmits the humidity signal to the control unit (603). The control unit (603) controls the humidifier (701) according to the preset humidity range. When the humidity inside the box (1) is lower than the lower limit of the preset range, the control unit (603) turns on the humidifier (701) and the humidifier (701) releases water vapor into the box.

8. The enclosed busbar detection device according to claim 7, characterized in that: The housing (1) also includes a mounting bracket (801) and an air blower (802); The mounting bracket (801) and the air blower (802) are installed inside the housing (1). The mounting bracket (801) and the air blower (802) are fixedly connected. The air blower (802) faces the busbar fixing mechanism, which causes the air inside the housing (1) to circulate.

9. A closed busbar detection device according to claim 8, characterized in that: When the heating plate (601) of the temperature control mechanism heats the air inside the box (1), if the air does not flow, the heated air will concentrate near the heating plate (601), resulting in temperature differences in different locations of the box (1). The airflow generated by the blower (802) will quickly carry the heat generated by the heating plate (601) to other areas of the box (1).

10. A closed busbar detection device according to claim 1, characterized in that: The elastic sealing block (2) automatically assembles into a circular sealing disc based on its own elasticity, completely sealing the wiring port.

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